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authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2016-09-11 04:34:46 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2016-09-11 04:34:46 -0300
commit863981e96738983919de841ec669e157e6bdaeb0 (patch)
treed6d89a12e7eb8017837c057935a2271290907f76 /drivers/mmc
parent8dec7c70575785729a6a9e6719a955e9c545bcab (diff)
Linux-libre 4.7.1-gnupck-4.7.1-gnu
Diffstat (limited to 'drivers/mmc')
-rw-r--r--drivers/mmc/card/block.c82
-rw-r--r--drivers/mmc/card/sdio_uart.c2
-rw-r--r--drivers/mmc/core/Kconfig21
-rw-r--r--drivers/mmc/core/Makefile4
-rw-r--r--drivers/mmc/core/core.c12
-rw-r--r--drivers/mmc/core/host.c46
-rw-r--r--drivers/mmc/core/mmc.c61
-rw-r--r--drivers/mmc/core/pwrseq.c108
-rw-r--r--drivers/mmc/core/pwrseq.h19
-rw-r--r--drivers/mmc/core/pwrseq_emmc.c81
-rw-r--r--drivers/mmc/core/pwrseq_simple.c91
-rw-r--r--drivers/mmc/core/sdio_cis.c7
-rw-r--r--drivers/mmc/host/Kconfig4
-rw-r--r--drivers/mmc/host/atmel-mci.c9
-rw-r--r--drivers/mmc/host/davinci_mmc.c151
-rw-r--r--drivers/mmc/host/dw_mmc-exynos.c23
-rw-r--r--drivers/mmc/host/dw_mmc-rockchip.c107
-rw-r--r--drivers/mmc/host/dw_mmc.c23
-rw-r--r--drivers/mmc/host/dw_mmc.h2
-rw-r--r--drivers/mmc/host/mmci.c20
-rw-r--r--drivers/mmc/host/mtk-sd.c19
-rw-r--r--drivers/mmc/host/omap.c48
-rw-r--r--drivers/mmc/host/omap_hsmmc.c90
-rw-r--r--drivers/mmc/host/pxamci.c16
-rw-r--r--drivers/mmc/host/sdhci-acpi.c9
-rw-r--r--drivers/mmc/host/sdhci-esdhc-imx.c2
-rw-r--r--drivers/mmc/host/sdhci-of-arasan.c26
-rw-r--r--drivers/mmc/host/sdhci-of-at91.c76
-rw-r--r--drivers/mmc/host/sdhci-pci-core.c9
-rw-r--r--drivers/mmc/host/sdhci-pic32.c1
-rw-r--r--drivers/mmc/host/sdhci-pltfm.c42
-rw-r--r--drivers/mmc/host/sdhci.c324
-rw-r--r--drivers/mmc/host/sdhci.h10
-rw-r--r--drivers/mmc/host/sh_mmcif.c74
-rw-r--r--drivers/mmc/host/sh_mobile_sdhi.c194
-rw-r--r--drivers/mmc/host/sunxi-mmc.c9
-rw-r--r--drivers/mmc/host/tmio_mmc.h75
-rw-r--r--drivers/mmc/host/tmio_mmc_dma.c1
-rw-r--r--drivers/mmc/host/tmio_mmc_pio.c196
-rw-r--r--drivers/mmc/host/toshsd.c1
-rw-r--r--drivers/mmc/host/usdhi6rol0.c60
41 files changed, 1166 insertions, 989 deletions
diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c
index b0a27413c..c5472e3c9 100644
--- a/drivers/mmc/card/block.c
+++ b/drivers/mmc/card/block.c
@@ -35,6 +35,7 @@
#include <linux/capability.h>
#include <linux/compat.h>
#include <linux/pm_runtime.h>
+#include <linux/idr.h>
#include <linux/mmc/ioctl.h>
#include <linux/mmc/card.h>
@@ -78,14 +79,14 @@ static int perdev_minors = CONFIG_MMC_BLOCK_MINORS;
/*
* We've only got one major, so number of mmcblk devices is
* limited to (1 << 20) / number of minors per device. It is also
- * currently limited by the size of the static bitmaps below.
+ * limited by the MAX_DEVICES below.
*/
static int max_devices;
#define MAX_DEVICES 256
-/* TODO: Replace these with struct ida */
-static DECLARE_BITMAP(dev_use, MAX_DEVICES);
+static DEFINE_IDA(mmc_blk_ida);
+static DEFINE_SPINLOCK(mmc_blk_lock);
/*
* There is one mmc_blk_data per slot.
@@ -178,7 +179,9 @@ static void mmc_blk_put(struct mmc_blk_data *md)
int devidx = mmc_get_devidx(md->disk);
blk_cleanup_queue(md->queue.queue);
- __clear_bit(devidx, dev_use);
+ spin_lock(&mmc_blk_lock);
+ ida_remove(&mmc_blk_ida, devidx);
+ spin_unlock(&mmc_blk_lock);
put_disk(md->disk);
kfree(md);
@@ -352,8 +355,10 @@ static struct mmc_blk_ioc_data *mmc_blk_ioctl_copy_from_user(
goto idata_err;
}
- if (!idata->buf_bytes)
+ if (!idata->buf_bytes) {
+ idata->buf = NULL;
return idata;
+ }
idata->buf = kmalloc(idata->buf_bytes, GFP_KERNEL);
if (!idata->buf) {
@@ -615,6 +620,10 @@ static int mmc_blk_ioctl_cmd(struct block_device *bdev,
ioc_err = __mmc_blk_ioctl_cmd(card, md, idata);
+ /* Always switch back to main area after RPMB access */
+ if (md->area_type & MMC_BLK_DATA_AREA_RPMB)
+ mmc_blk_part_switch(card, dev_get_drvdata(&card->dev));
+
mmc_put_card(card);
err = mmc_blk_ioctl_copy_to_user(ic_ptr, idata);
@@ -682,6 +691,10 @@ static int mmc_blk_ioctl_multi_cmd(struct block_device *bdev,
for (i = 0; i < num_of_cmds && !ioc_err; i++)
ioc_err = __mmc_blk_ioctl_cmd(card, md, idata[i]);
+ /* Always switch back to main area after RPMB access */
+ if (md->area_type & MMC_BLK_DATA_AREA_RPMB)
+ mmc_blk_part_switch(card, dev_get_drvdata(&card->dev));
+
mmc_put_card(card);
/* copy to user if data and response */
@@ -745,16 +758,25 @@ static inline int mmc_blk_part_switch(struct mmc_card *card,
if (mmc_card_mmc(card)) {
u8 part_config = card->ext_csd.part_config;
+ if (md->part_type == EXT_CSD_PART_CONFIG_ACC_RPMB)
+ mmc_retune_pause(card->host);
+
part_config &= ~EXT_CSD_PART_CONFIG_ACC_MASK;
part_config |= md->part_type;
ret = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
EXT_CSD_PART_CONFIG, part_config,
card->ext_csd.part_time);
- if (ret)
+ if (ret) {
+ if (md->part_type == EXT_CSD_PART_CONFIG_ACC_RPMB)
+ mmc_retune_unpause(card->host);
return ret;
+ }
card->ext_csd.part_config = part_config;
+
+ if (main_md->part_curr == EXT_CSD_PART_CONFIG_ACC_RPMB)
+ mmc_retune_unpause(card->host);
}
main_md->part_curr = md->part_type;
@@ -945,16 +967,22 @@ static int mmc_blk_cmd_error(struct request *req, const char *name, int error,
req->rq_disk->disk_name, "timed out", name, status);
/* If the status cmd initially failed, retry the r/w cmd */
- if (!status_valid)
+ if (!status_valid) {
+ pr_err("%s: status not valid, retrying timeout\n",
+ req->rq_disk->disk_name);
return ERR_RETRY;
+ }
/*
* If it was a r/w cmd crc error, or illegal command
* (eg, issued in wrong state) then retry - we should
* have corrected the state problem above.
*/
- if (status & (R1_COM_CRC_ERROR | R1_ILLEGAL_COMMAND))
+ if (status & (R1_COM_CRC_ERROR | R1_ILLEGAL_COMMAND)) {
+ pr_err("%s: command error, retrying timeout\n",
+ req->rq_disk->disk_name);
return ERR_RETRY;
+ }
/* Otherwise abort the command */
return ERR_ABORT;
@@ -1760,8 +1788,8 @@ static void mmc_blk_packed_hdr_wrq_prep(struct mmc_queue_req *mqrq,
packed_cmd_hdr = packed->cmd_hdr;
memset(packed_cmd_hdr, 0, sizeof(packed->cmd_hdr));
- packed_cmd_hdr[0] = (packed->nr_entries << 16) |
- (PACKED_CMD_WR << 8) | PACKED_CMD_VER;
+ packed_cmd_hdr[0] = cpu_to_le32((packed->nr_entries << 16) |
+ (PACKED_CMD_WR << 8) | PACKED_CMD_VER);
hdr_blocks = mmc_large_sector(card) ? 8 : 1;
/*
@@ -1775,14 +1803,14 @@ static void mmc_blk_packed_hdr_wrq_prep(struct mmc_queue_req *mqrq,
((brq->data.blocks * brq->data.blksz) >=
card->ext_csd.data_tag_unit_size);
/* Argument of CMD23 */
- packed_cmd_hdr[(i * 2)] =
+ packed_cmd_hdr[(i * 2)] = cpu_to_le32(
(do_rel_wr ? MMC_CMD23_ARG_REL_WR : 0) |
(do_data_tag ? MMC_CMD23_ARG_TAG_REQ : 0) |
- blk_rq_sectors(prq);
+ blk_rq_sectors(prq));
/* Argument of CMD18 or CMD25 */
- packed_cmd_hdr[((i * 2)) + 1] =
+ packed_cmd_hdr[((i * 2)) + 1] = cpu_to_le32(
mmc_card_blockaddr(card) ?
- blk_rq_pos(prq) : blk_rq_pos(prq) << 9;
+ blk_rq_pos(prq) : blk_rq_pos(prq) << 9);
packed->blocks += blk_rq_sectors(prq);
i++;
}
@@ -2189,10 +2217,23 @@ static struct mmc_blk_data *mmc_blk_alloc_req(struct mmc_card *card,
struct mmc_blk_data *md;
int devidx, ret;
- devidx = find_first_zero_bit(dev_use, max_devices);
- if (devidx >= max_devices)
- return ERR_PTR(-ENOSPC);
- __set_bit(devidx, dev_use);
+again:
+ if (!ida_pre_get(&mmc_blk_ida, GFP_KERNEL))
+ return ERR_PTR(-ENOMEM);
+
+ spin_lock(&mmc_blk_lock);
+ ret = ida_get_new(&mmc_blk_ida, &devidx);
+ spin_unlock(&mmc_blk_lock);
+
+ if (ret == -EAGAIN)
+ goto again;
+ else if (ret)
+ return ERR_PTR(ret);
+
+ if (devidx >= max_devices) {
+ ret = -ENOSPC;
+ goto out;
+ }
md = kzalloc(sizeof(struct mmc_blk_data), GFP_KERNEL);
if (!md) {
@@ -2271,7 +2312,7 @@ static struct mmc_blk_data *mmc_blk_alloc_req(struct mmc_card *card,
((card->ext_csd.rel_param & EXT_CSD_WR_REL_PARAM_EN) ||
card->ext_csd.rel_sectors)) {
md->flags |= MMC_BLK_REL_WR;
- blk_queue_flush(md->queue.queue, REQ_FLUSH | REQ_FUA);
+ blk_queue_write_cache(md->queue.queue, true, true);
}
if (mmc_card_mmc(card) &&
@@ -2289,6 +2330,9 @@ static struct mmc_blk_data *mmc_blk_alloc_req(struct mmc_card *card,
err_kfree:
kfree(md);
out:
+ spin_lock(&mmc_blk_lock);
+ ida_remove(&mmc_blk_ida, devidx);
+ spin_unlock(&mmc_blk_lock);
return ERR_PTR(ret);
}
diff --git a/drivers/mmc/card/sdio_uart.c b/drivers/mmc/card/sdio_uart.c
index 5415056f9..5af6fb9a9 100644
--- a/drivers/mmc/card/sdio_uart.c
+++ b/drivers/mmc/card/sdio_uart.c
@@ -895,7 +895,7 @@ static void sdio_uart_set_termios(struct tty_struct *tty,
/* Handle transition away from B0 status */
if (!(old_termios->c_cflag & CBAUD) && (cflag & CBAUD)) {
unsigned int mask = TIOCM_DTR;
- if (!(cflag & CRTSCTS) || !test_bit(TTY_THROTTLED, &tty->flags))
+ if (!(cflag & CRTSCTS) || !tty_throttled(tty))
mask |= TIOCM_RTS;
sdio_uart_set_mctrl(port, mask);
}
diff --git a/drivers/mmc/core/Kconfig b/drivers/mmc/core/Kconfig
index 4c33d7690..250f223aa 100644
--- a/drivers/mmc/core/Kconfig
+++ b/drivers/mmc/core/Kconfig
@@ -1,3 +1,24 @@
#
# MMC core configuration
#
+config PWRSEQ_EMMC
+ tristate "HW reset support for eMMC"
+ default y
+ depends on OF
+ help
+ This selects Hardware reset support aka pwrseq-emmc for eMMC
+ devices. By default this option is set to y.
+
+ This driver can also be built as a module. If so, the module
+ will be called pwrseq_emmc.
+
+config PWRSEQ_SIMPLE
+ tristate "Simple HW reset support for MMC"
+ default y
+ depends on OF
+ help
+ This selects simple hardware reset support aka pwrseq-simple for MMC
+ devices. By default this option is set to y.
+
+ This driver can also be built as a module. If so, the module
+ will be called pwrseq_simple.
diff --git a/drivers/mmc/core/Makefile b/drivers/mmc/core/Makefile
index 2c25138f2..f007151df 100644
--- a/drivers/mmc/core/Makefile
+++ b/drivers/mmc/core/Makefile
@@ -8,5 +8,7 @@ mmc_core-y := core.o bus.o host.o \
sdio.o sdio_ops.o sdio_bus.o \
sdio_cis.o sdio_io.o sdio_irq.o \
quirks.o slot-gpio.o
-mmc_core-$(CONFIG_OF) += pwrseq.o pwrseq_simple.o pwrseq_emmc.o
+mmc_core-$(CONFIG_OF) += pwrseq.o
+obj-$(CONFIG_PWRSEQ_SIMPLE) += pwrseq_simple.o
+obj-$(CONFIG_PWRSEQ_EMMC) += pwrseq_emmc.o
mmc_core-$(CONFIG_DEBUG_FS) += debugfs.o
diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
index 9eba56c68..8b4dfd454 100644
--- a/drivers/mmc/core/core.c
+++ b/drivers/mmc/core/core.c
@@ -36,6 +36,9 @@
#include <linux/mmc/sd.h>
#include <linux/mmc/slot-gpio.h>
+#define CREATE_TRACE_POINTS
+#include <trace/events/mmc.h>
+
#include "core.h"
#include "bus.h"
#include "host.h"
@@ -140,6 +143,8 @@ void mmc_request_done(struct mmc_host *host, struct mmc_request *mrq)
cmd->retries = 0;
}
+ trace_mmc_request_done(host, mrq);
+
if (err && cmd->retries && !mmc_card_removed(host->card)) {
/*
* Request starter must handle retries - see
@@ -215,6 +220,8 @@ static void __mmc_start_request(struct mmc_host *host, struct mmc_request *mrq)
}
}
+ trace_mmc_request_start(host, mrq);
+
host->ops->request(host, mrq);
}
@@ -2449,8 +2456,9 @@ int mmc_hw_reset(struct mmc_host *host)
ret = host->bus_ops->reset(host);
mmc_bus_put(host);
- if (ret != -EOPNOTSUPP)
- pr_warn("%s: tried to reset card\n", mmc_hostname(host));
+ if (ret)
+ pr_warn("%s: tried to reset card, got error %d\n",
+ mmc_hostname(host), ret);
return ret;
}
diff --git a/drivers/mmc/core/host.c b/drivers/mmc/core/host.c
index 6e4c55a4a..1be42fab1 100644
--- a/drivers/mmc/core/host.c
+++ b/drivers/mmc/core/host.c
@@ -33,14 +33,14 @@
#define cls_dev_to_mmc_host(d) container_of(d, struct mmc_host, class_dev)
-static DEFINE_IDR(mmc_host_idr);
+static DEFINE_IDA(mmc_host_ida);
static DEFINE_SPINLOCK(mmc_host_lock);
static void mmc_host_classdev_release(struct device *dev)
{
struct mmc_host *host = cls_dev_to_mmc_host(dev);
spin_lock(&mmc_host_lock);
- idr_remove(&mmc_host_idr, host->index);
+ ida_remove(&mmc_host_ida, host->index);
spin_unlock(&mmc_host_lock);
kfree(host);
}
@@ -68,8 +68,32 @@ void mmc_retune_enable(struct mmc_host *host)
jiffies + host->retune_period * HZ);
}
+/*
+ * Pause re-tuning for a small set of operations. The pause begins after the
+ * next command and after first doing re-tuning.
+ */
+void mmc_retune_pause(struct mmc_host *host)
+{
+ if (!host->retune_paused) {
+ host->retune_paused = 1;
+ mmc_retune_needed(host);
+ mmc_retune_hold(host);
+ }
+}
+EXPORT_SYMBOL(mmc_retune_pause);
+
+void mmc_retune_unpause(struct mmc_host *host)
+{
+ if (host->retune_paused) {
+ host->retune_paused = 0;
+ mmc_retune_release(host);
+ }
+}
+EXPORT_SYMBOL(mmc_retune_unpause);
+
void mmc_retune_disable(struct mmc_host *host)
{
+ mmc_retune_unpause(host);
host->can_retune = 0;
del_timer_sync(&host->retune_timer);
host->retune_now = 0;
@@ -321,14 +345,20 @@ struct mmc_host *mmc_alloc_host(int extra, struct device *dev)
/* scanning will be enabled when we're ready */
host->rescan_disable = 1;
- idr_preload(GFP_KERNEL);
+
+again:
+ if (!ida_pre_get(&mmc_host_ida, GFP_KERNEL)) {
+ kfree(host);
+ return NULL;
+ }
+
spin_lock(&mmc_host_lock);
- err = idr_alloc(&mmc_host_idr, host, 0, 0, GFP_NOWAIT);
- if (err >= 0)
- host->index = err;
+ err = ida_get_new(&mmc_host_ida, &host->index);
spin_unlock(&mmc_host_lock);
- idr_preload_end();
- if (err < 0) {
+
+ if (err == -EAGAIN) {
+ goto again;
+ } else if (err) {
kfree(host);
return NULL;
}
diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c
index 80169643d..5d438ad3e 100644
--- a/drivers/mmc/core/mmc.c
+++ b/drivers/mmc/core/mmc.c
@@ -1251,10 +1251,11 @@ static int mmc_select_hs200(struct mmc_card *card)
{
struct mmc_host *host = card->host;
bool send_status = true;
- unsigned int old_timing;
+ unsigned int old_timing, old_signal_voltage;
int err = -EINVAL;
u8 val;
+ old_signal_voltage = host->ios.signal_voltage;
if (card->mmc_avail_type & EXT_CSD_CARD_TYPE_HS200_1_2V)
err = __mmc_set_signal_voltage(host, MMC_SIGNAL_VOLTAGE_120);
@@ -1263,7 +1264,7 @@ static int mmc_select_hs200(struct mmc_card *card)
/* If fails try again during next card power cycle */
if (err)
- goto err;
+ return err;
mmc_select_driver_type(card);
@@ -1275,7 +1276,7 @@ static int mmc_select_hs200(struct mmc_card *card)
* switch to HS200 mode if bus width is set successfully.
*/
err = mmc_select_bus_width(card);
- if (!IS_ERR_VALUE(err)) {
+ if (err >= 0) {
val = EXT_CSD_TIMING_HS200 |
card->drive_strength << EXT_CSD_DRV_STR_SHIFT;
err = __mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
@@ -1297,9 +1298,14 @@ static int mmc_select_hs200(struct mmc_card *card)
}
}
err:
- if (err)
+ if (err) {
+ /* fall back to the old signal voltage, if fails report error */
+ if (__mmc_set_signal_voltage(host, old_signal_voltage))
+ err = -EIO;
+
pr_err("%s: %s failed, error %d\n", mmc_hostname(card->host),
__func__, err);
+ }
return err;
}
@@ -1321,21 +1327,13 @@ static int mmc_select_timing(struct mmc_card *card)
if (err && err != -EBADMSG)
return err;
- if (err) {
- pr_warn("%s: switch to %s failed\n",
- mmc_card_hs(card) ? "high-speed" :
- (mmc_card_hs200(card) ? "hs200" : ""),
- mmc_hostname(card->host));
- err = 0;
- }
-
bus_speed:
/*
* Set the bus speed to the selected bus timing.
* If timing is not selected, backward compatible is the default.
*/
mmc_set_bus_speed(card);
- return err;
+ return 0;
}
/*
@@ -1490,12 +1488,13 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
if (err)
goto free_card;
- /* If doing byte addressing, check if required to do sector
+ /*
+ * If doing byte addressing, check if required to do sector
* addressing. Handle the case of <2GB cards needing sector
* addressing. See section 8.1 JEDEC Standard JED84-A441;
* ocr register has bit 30 set for sector addressing.
*/
- if (!(mmc_card_blockaddr(card)) && (rocr & (1<<30)))
+ if (rocr & BIT(30))
mmc_card_set_blockaddr(card);
/* Erase size depends on CSD and Extended CSD */
@@ -1584,7 +1583,7 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
} else if (mmc_card_hs(card)) {
/* Select the desired bus width optionally */
err = mmc_select_bus_width(card);
- if (!IS_ERR_VALUE(err)) {
+ if (err >= 0) {
err = mmc_select_hs_ddr(card);
if (err)
goto free_card;
@@ -1964,19 +1963,23 @@ static int mmc_reset(struct mmc_host *host)
{
struct mmc_card *card = host->card;
- if (!(host->caps & MMC_CAP_HW_RESET) || !host->ops->hw_reset)
- return -EOPNOTSUPP;
-
- if (!mmc_can_reset(card))
- return -EOPNOTSUPP;
-
- mmc_set_clock(host, host->f_init);
-
- host->ops->hw_reset(host);
-
- /* Set initial state and call mmc_set_ios */
- mmc_set_initial_state(host);
-
+ /*
+ * In the case of recovery, we can't expect flushing the cache to work
+ * always, but we have a go and ignore errors.
+ */
+ mmc_flush_cache(host->card);
+
+ if ((host->caps & MMC_CAP_HW_RESET) && host->ops->hw_reset &&
+ mmc_can_reset(card)) {
+ /* If the card accept RST_n signal, send it. */
+ mmc_set_clock(host, host->f_init);
+ host->ops->hw_reset(host);
+ /* Set initial state and call mmc_set_ios */
+ mmc_set_initial_state(host);
+ } else {
+ /* Do a brute force power cycle */
+ mmc_power_cycle(host, card->ocr);
+ }
return mmc_init_card(host, card->ocr, card);
}
diff --git a/drivers/mmc/core/pwrseq.c b/drivers/mmc/core/pwrseq.c
index 4c1d1757d..9386c4771 100644
--- a/drivers/mmc/core/pwrseq.c
+++ b/drivers/mmc/core/pwrseq.c
@@ -8,88 +8,55 @@
* MMC power sequence management
*/
#include <linux/kernel.h>
-#include <linux/platform_device.h>
#include <linux/err.h>
+#include <linux/module.h>
#include <linux/of.h>
-#include <linux/of_platform.h>
#include <linux/mmc/host.h>
#include "pwrseq.h"
-struct mmc_pwrseq_match {
- const char *compatible;
- struct mmc_pwrseq *(*alloc)(struct mmc_host *host, struct device *dev);
-};
-
-static struct mmc_pwrseq_match pwrseq_match[] = {
- {
- .compatible = "mmc-pwrseq-simple",
- .alloc = mmc_pwrseq_simple_alloc,
- }, {
- .compatible = "mmc-pwrseq-emmc",
- .alloc = mmc_pwrseq_emmc_alloc,
- },
-};
-
-static struct mmc_pwrseq_match *mmc_pwrseq_find(struct device_node *np)
-{
- struct mmc_pwrseq_match *match = ERR_PTR(-ENODEV);
- int i;
-
- for (i = 0; i < ARRAY_SIZE(pwrseq_match); i++) {
- if (of_device_is_compatible(np, pwrseq_match[i].compatible)) {
- match = &pwrseq_match[i];
- break;
- }
- }
-
- return match;
-}
+static DEFINE_MUTEX(pwrseq_list_mutex);
+static LIST_HEAD(pwrseq_list);
int mmc_pwrseq_alloc(struct mmc_host *host)
{
- struct platform_device *pdev;
struct device_node *np;
- struct mmc_pwrseq_match *match;
- struct mmc_pwrseq *pwrseq;
- int ret = 0;
+ struct mmc_pwrseq *p;
np = of_parse_phandle(host->parent->of_node, "mmc-pwrseq", 0);
if (!np)
return 0;
- pdev = of_find_device_by_node(np);
- if (!pdev) {
- ret = -ENODEV;
- goto err;
- }
+ mutex_lock(&pwrseq_list_mutex);
+ list_for_each_entry(p, &pwrseq_list, pwrseq_node) {
+ if (p->dev->of_node == np) {
+ if (!try_module_get(p->owner))
+ dev_err(host->parent,
+ "increasing module refcount failed\n");
+ else
+ host->pwrseq = p;
- match = mmc_pwrseq_find(np);
- if (IS_ERR(match)) {
- ret = PTR_ERR(match);
- goto err;
+ break;
+ }
}
- pwrseq = match->alloc(host, &pdev->dev);
- if (IS_ERR(pwrseq)) {
- ret = PTR_ERR(pwrseq);
- goto err;
- }
+ of_node_put(np);
+ mutex_unlock(&pwrseq_list_mutex);
+
+ if (!host->pwrseq)
+ return -EPROBE_DEFER;
- host->pwrseq = pwrseq;
dev_info(host->parent, "allocated mmc-pwrseq\n");
-err:
- of_node_put(np);
- return ret;
+ return 0;
}
void mmc_pwrseq_pre_power_on(struct mmc_host *host)
{
struct mmc_pwrseq *pwrseq = host->pwrseq;
- if (pwrseq && pwrseq->ops && pwrseq->ops->pre_power_on)
+ if (pwrseq && pwrseq->ops->pre_power_on)
pwrseq->ops->pre_power_on(host);
}
@@ -97,7 +64,7 @@ void mmc_pwrseq_post_power_on(struct mmc_host *host)
{
struct mmc_pwrseq *pwrseq = host->pwrseq;
- if (pwrseq && pwrseq->ops && pwrseq->ops->post_power_on)
+ if (pwrseq && pwrseq->ops->post_power_on)
pwrseq->ops->post_power_on(host);
}
@@ -105,7 +72,7 @@ void mmc_pwrseq_power_off(struct mmc_host *host)
{
struct mmc_pwrseq *pwrseq = host->pwrseq;
- if (pwrseq && pwrseq->ops && pwrseq->ops->power_off)
+ if (pwrseq && pwrseq->ops->power_off)
pwrseq->ops->power_off(host);
}
@@ -113,8 +80,31 @@ void mmc_pwrseq_free(struct mmc_host *host)
{
struct mmc_pwrseq *pwrseq = host->pwrseq;
- if (pwrseq && pwrseq->ops && pwrseq->ops->free)
- pwrseq->ops->free(host);
+ if (pwrseq) {
+ module_put(pwrseq->owner);
+ host->pwrseq = NULL;
+ }
+}
+
+int mmc_pwrseq_register(struct mmc_pwrseq *pwrseq)
+{
+ if (!pwrseq || !pwrseq->ops || !pwrseq->dev)
+ return -EINVAL;
- host->pwrseq = NULL;
+ mutex_lock(&pwrseq_list_mutex);
+ list_add(&pwrseq->pwrseq_node, &pwrseq_list);
+ mutex_unlock(&pwrseq_list_mutex);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(mmc_pwrseq_register);
+
+void mmc_pwrseq_unregister(struct mmc_pwrseq *pwrseq)
+{
+ if (pwrseq) {
+ mutex_lock(&pwrseq_list_mutex);
+ list_del(&pwrseq->pwrseq_node);
+ mutex_unlock(&pwrseq_list_mutex);
+ }
}
+EXPORT_SYMBOL_GPL(mmc_pwrseq_unregister);
diff --git a/drivers/mmc/core/pwrseq.h b/drivers/mmc/core/pwrseq.h
index 133de0426..d69e751f1 100644
--- a/drivers/mmc/core/pwrseq.h
+++ b/drivers/mmc/core/pwrseq.h
@@ -8,32 +8,39 @@
#ifndef _MMC_CORE_PWRSEQ_H
#define _MMC_CORE_PWRSEQ_H
+#include <linux/mmc/host.h>
+
struct mmc_pwrseq_ops {
void (*pre_power_on)(struct mmc_host *host);
void (*post_power_on)(struct mmc_host *host);
void (*power_off)(struct mmc_host *host);
- void (*free)(struct mmc_host *host);
};
struct mmc_pwrseq {
const struct mmc_pwrseq_ops *ops;
+ struct device *dev;
+ struct list_head pwrseq_node;
+ struct module *owner;
};
#ifdef CONFIG_OF
+int mmc_pwrseq_register(struct mmc_pwrseq *pwrseq);
+void mmc_pwrseq_unregister(struct mmc_pwrseq *pwrseq);
+
int mmc_pwrseq_alloc(struct mmc_host *host);
void mmc_pwrseq_pre_power_on(struct mmc_host *host);
void mmc_pwrseq_post_power_on(struct mmc_host *host);
void mmc_pwrseq_power_off(struct mmc_host *host);
void mmc_pwrseq_free(struct mmc_host *host);
-struct mmc_pwrseq *mmc_pwrseq_simple_alloc(struct mmc_host *host,
- struct device *dev);
-struct mmc_pwrseq *mmc_pwrseq_emmc_alloc(struct mmc_host *host,
- struct device *dev);
-
#else
+static inline int mmc_pwrseq_register(struct mmc_pwrseq *pwrseq)
+{
+ return -ENOSYS;
+}
+static inline void mmc_pwrseq_unregister(struct mmc_pwrseq *pwrseq) {}
static inline int mmc_pwrseq_alloc(struct mmc_host *host) { return 0; }
static inline void mmc_pwrseq_pre_power_on(struct mmc_host *host) {}
static inline void mmc_pwrseq_post_power_on(struct mmc_host *host) {}
diff --git a/drivers/mmc/core/pwrseq_emmc.c b/drivers/mmc/core/pwrseq_emmc.c
index 4a82bc77f..adc9c0c61 100644
--- a/drivers/mmc/core/pwrseq_emmc.c
+++ b/drivers/mmc/core/pwrseq_emmc.c
@@ -9,6 +9,9 @@
*/
#include <linux/delay.h>
#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/module.h>
#include <linux/slab.h>
#include <linux/device.h>
#include <linux/err.h>
@@ -25,6 +28,8 @@ struct mmc_pwrseq_emmc {
struct gpio_desc *reset_gpio;
};
+#define to_pwrseq_emmc(p) container_of(p, struct mmc_pwrseq_emmc, pwrseq)
+
static void __mmc_pwrseq_emmc_reset(struct mmc_pwrseq_emmc *pwrseq)
{
gpiod_set_value(pwrseq->reset_gpio, 1);
@@ -35,27 +40,11 @@ static void __mmc_pwrseq_emmc_reset(struct mmc_pwrseq_emmc *pwrseq)
static void mmc_pwrseq_emmc_reset(struct mmc_host *host)
{
- struct mmc_pwrseq_emmc *pwrseq = container_of(host->pwrseq,
- struct mmc_pwrseq_emmc, pwrseq);
+ struct mmc_pwrseq_emmc *pwrseq = to_pwrseq_emmc(host->pwrseq);
__mmc_pwrseq_emmc_reset(pwrseq);
}
-static void mmc_pwrseq_emmc_free(struct mmc_host *host)
-{
- struct mmc_pwrseq_emmc *pwrseq = container_of(host->pwrseq,
- struct mmc_pwrseq_emmc, pwrseq);
-
- unregister_restart_handler(&pwrseq->reset_nb);
- gpiod_put(pwrseq->reset_gpio);
- kfree(pwrseq);
-}
-
-static const struct mmc_pwrseq_ops mmc_pwrseq_emmc_ops = {
- .post_power_on = mmc_pwrseq_emmc_reset,
- .free = mmc_pwrseq_emmc_free,
-};
-
static int mmc_pwrseq_emmc_reset_nb(struct notifier_block *this,
unsigned long mode, void *cmd)
{
@@ -66,21 +55,22 @@ static int mmc_pwrseq_emmc_reset_nb(struct notifier_block *this,
return NOTIFY_DONE;
}
-struct mmc_pwrseq *mmc_pwrseq_emmc_alloc(struct mmc_host *host,
- struct device *dev)
+static const struct mmc_pwrseq_ops mmc_pwrseq_emmc_ops = {
+ .post_power_on = mmc_pwrseq_emmc_reset,
+};
+
+static int mmc_pwrseq_emmc_probe(struct platform_device *pdev)
{
struct mmc_pwrseq_emmc *pwrseq;
- int ret = 0;
+ struct device *dev = &pdev->dev;
- pwrseq = kzalloc(sizeof(struct mmc_pwrseq_emmc), GFP_KERNEL);
+ pwrseq = devm_kzalloc(dev, sizeof(*pwrseq), GFP_KERNEL);
if (!pwrseq)
- return ERR_PTR(-ENOMEM);
+ return -ENOMEM;
- pwrseq->reset_gpio = gpiod_get(dev, "reset", GPIOD_OUT_LOW);
- if (IS_ERR(pwrseq->reset_gpio)) {
- ret = PTR_ERR(pwrseq->reset_gpio);
- goto free;
- }
+ pwrseq->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);
+ if (IS_ERR(pwrseq->reset_gpio))
+ return PTR_ERR(pwrseq->reset_gpio);
/*
* register reset handler to ensure emmc reset also from
@@ -92,9 +82,38 @@ struct mmc_pwrseq *mmc_pwrseq_emmc_alloc(struct mmc_host *host,
register_restart_handler(&pwrseq->reset_nb);
pwrseq->pwrseq.ops = &mmc_pwrseq_emmc_ops;
+ pwrseq->pwrseq.dev = dev;
+ pwrseq->pwrseq.owner = THIS_MODULE;
+ platform_set_drvdata(pdev, pwrseq);
+
+ return mmc_pwrseq_register(&pwrseq->pwrseq);
+}
+
+static int mmc_pwrseq_emmc_remove(struct platform_device *pdev)
+{
+ struct mmc_pwrseq_emmc *pwrseq = platform_get_drvdata(pdev);
+
+ unregister_restart_handler(&pwrseq->reset_nb);
+ mmc_pwrseq_unregister(&pwrseq->pwrseq);
- return &pwrseq->pwrseq;
-free:
- kfree(pwrseq);
- return ERR_PTR(ret);
+ return 0;
}
+
+static const struct of_device_id mmc_pwrseq_emmc_of_match[] = {
+ { .compatible = "mmc-pwrseq-emmc",},
+ {/* sentinel */},
+};
+
+MODULE_DEVICE_TABLE(of, mmc_pwrseq_emmc_of_match);
+
+static struct platform_driver mmc_pwrseq_emmc_driver = {
+ .probe = mmc_pwrseq_emmc_probe,
+ .remove = mmc_pwrseq_emmc_remove,
+ .driver = {
+ .name = "pwrseq_emmc",
+ .of_match_table = mmc_pwrseq_emmc_of_match,
+ },
+};
+
+module_platform_driver(mmc_pwrseq_emmc_driver);
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/mmc/core/pwrseq_simple.c b/drivers/mmc/core/pwrseq_simple.c
index bc173e18b..450d907c6 100644
--- a/drivers/mmc/core/pwrseq_simple.c
+++ b/drivers/mmc/core/pwrseq_simple.c
@@ -8,7 +8,10 @@
* Simple MMC power sequence management
*/
#include <linux/clk.h>
+#include <linux/init.h>
#include <linux/kernel.h>
+#include <linux/platform_device.h>
+#include <linux/module.h>
#include <linux/slab.h>
#include <linux/device.h>
#include <linux/err.h>
@@ -25,6 +28,8 @@ struct mmc_pwrseq_simple {
struct gpio_descs *reset_gpios;
};
+#define to_pwrseq_simple(p) container_of(p, struct mmc_pwrseq_simple, pwrseq)
+
static void mmc_pwrseq_simple_set_gpios_value(struct mmc_pwrseq_simple *pwrseq,
int value)
{
@@ -44,8 +49,7 @@ static void mmc_pwrseq_simple_set_gpios_value(struct mmc_pwrseq_simple *pwrseq,
static void mmc_pwrseq_simple_pre_power_on(struct mmc_host *host)
{
- struct mmc_pwrseq_simple *pwrseq = container_of(host->pwrseq,
- struct mmc_pwrseq_simple, pwrseq);
+ struct mmc_pwrseq_simple *pwrseq = to_pwrseq_simple(host->pwrseq);
if (!IS_ERR(pwrseq->ext_clk) && !pwrseq->clk_enabled) {
clk_prepare_enable(pwrseq->ext_clk);
@@ -57,16 +61,14 @@ static void mmc_pwrseq_simple_pre_power_on(struct mmc_host *host)
static void mmc_pwrseq_simple_post_power_on(struct mmc_host *host)
{
- struct mmc_pwrseq_simple *pwrseq = container_of(host->pwrseq,
- struct mmc_pwrseq_simple, pwrseq);
+ struct mmc_pwrseq_simple *pwrseq = to_pwrseq_simple(host->pwrseq);
mmc_pwrseq_simple_set_gpios_value(pwrseq, 0);
}
static void mmc_pwrseq_simple_power_off(struct mmc_host *host)
{
- struct mmc_pwrseq_simple *pwrseq = container_of(host->pwrseq,
- struct mmc_pwrseq_simple, pwrseq);
+ struct mmc_pwrseq_simple *pwrseq = to_pwrseq_simple(host->pwrseq);
mmc_pwrseq_simple_set_gpios_value(pwrseq, 1);
@@ -76,59 +78,64 @@ static void mmc_pwrseq_simple_power_off(struct mmc_host *host)
}
}
-static void mmc_pwrseq_simple_free(struct mmc_host *host)
-{
- struct mmc_pwrseq_simple *pwrseq = container_of(host->pwrseq,
- struct mmc_pwrseq_simple, pwrseq);
-
- if (!IS_ERR(pwrseq->reset_gpios))
- gpiod_put_array(pwrseq->reset_gpios);
-
- if (!IS_ERR(pwrseq->ext_clk))
- clk_put(pwrseq->ext_clk);
-
- kfree(pwrseq);
-}
-
static const struct mmc_pwrseq_ops mmc_pwrseq_simple_ops = {
.pre_power_on = mmc_pwrseq_simple_pre_power_on,
.post_power_on = mmc_pwrseq_simple_post_power_on,
.power_off = mmc_pwrseq_simple_power_off,
- .free = mmc_pwrseq_simple_free,
};
-struct mmc_pwrseq *mmc_pwrseq_simple_alloc(struct mmc_host *host,
- struct device *dev)
+static const struct of_device_id mmc_pwrseq_simple_of_match[] = {
+ { .compatible = "mmc-pwrseq-simple",},
+ {/* sentinel */},
+};
+MODULE_DEVICE_TABLE(of, mmc_pwrseq_simple_of_match);
+
+static int mmc_pwrseq_simple_probe(struct platform_device *pdev)
{
struct mmc_pwrseq_simple *pwrseq;
- int ret = 0;
+ struct device *dev = &pdev->dev;
- pwrseq = kzalloc(sizeof(*pwrseq), GFP_KERNEL);
+ pwrseq = devm_kzalloc(dev, sizeof(*pwrseq), GFP_KERNEL);
if (!pwrseq)
- return ERR_PTR(-ENOMEM);
+ return -ENOMEM;
- pwrseq->ext_clk = clk_get(dev, "ext_clock");
- if (IS_ERR(pwrseq->ext_clk) &&
- PTR_ERR(pwrseq->ext_clk) != -ENOENT) {
- ret = PTR_ERR(pwrseq->ext_clk);
- goto free;
- }
+ pwrseq->ext_clk = devm_clk_get(dev, "ext_clock");
+ if (IS_ERR(pwrseq->ext_clk) && PTR_ERR(pwrseq->ext_clk) != -ENOENT)
+ return PTR_ERR(pwrseq->ext_clk);
- pwrseq->reset_gpios = gpiod_get_array(dev, "reset", GPIOD_OUT_HIGH);
+ pwrseq->reset_gpios = devm_gpiod_get_array(dev, "reset",
+ GPIOD_OUT_HIGH);
if (IS_ERR(pwrseq->reset_gpios) &&
PTR_ERR(pwrseq->reset_gpios) != -ENOENT &&
PTR_ERR(pwrseq->reset_gpios) != -ENOSYS) {
- ret = PTR_ERR(pwrseq->reset_gpios);
- goto clk_put;
+ return PTR_ERR(pwrseq->reset_gpios);
}
+ pwrseq->pwrseq.dev = dev;
pwrseq->pwrseq.ops = &mmc_pwrseq_simple_ops;
+ pwrseq->pwrseq.owner = THIS_MODULE;
+ platform_set_drvdata(pdev, pwrseq);
- return &pwrseq->pwrseq;
-clk_put:
- if (!IS_ERR(pwrseq->ext_clk))
- clk_put(pwrseq->ext_clk);
-free:
- kfree(pwrseq);
- return ERR_PTR(ret);
+ return mmc_pwrseq_register(&pwrseq->pwrseq);
}
+
+static int mmc_pwrseq_simple_remove(struct platform_device *pdev)
+{
+ struct mmc_pwrseq_simple *pwrseq = platform_get_drvdata(pdev);
+
+ mmc_pwrseq_unregister(&pwrseq->pwrseq);
+
+ return 0;
+}
+
+static struct platform_driver mmc_pwrseq_simple_driver = {
+ .probe = mmc_pwrseq_simple_probe,
+ .remove = mmc_pwrseq_simple_remove,
+ .driver = {
+ .name = "pwrseq_simple",
+ .of_match_table = mmc_pwrseq_simple_of_match,
+ },
+};
+
+module_platform_driver(mmc_pwrseq_simple_driver);
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/mmc/core/sdio_cis.c b/drivers/mmc/core/sdio_cis.c
index 6f6fc527a..dcb3dee59 100644
--- a/drivers/mmc/core/sdio_cis.c
+++ b/drivers/mmc/core/sdio_cis.c
@@ -177,8 +177,13 @@ static int cistpl_funce_func(struct mmc_card *card, struct sdio_func *func,
vsn = func->card->cccr.sdio_vsn;
min_size = (vsn == SDIO_SDIO_REV_1_00) ? 28 : 42;
- if (size < min_size)
+ if (size == 28 && vsn == SDIO_SDIO_REV_1_10) {
+ pr_warn("%s: card has broken SDIO 1.1 CIS, forcing SDIO 1.0\n",
+ mmc_hostname(card->host));
+ vsn = SDIO_SDIO_REV_1_00;
+ } else if (size < min_size) {
return -EINVAL;
+ }
/* TPLFE_MAX_BLK_SIZE */
func->max_blksize = buf[12] | (buf[13] << 8);
diff --git a/drivers/mmc/host/Kconfig b/drivers/mmc/host/Kconfig
index be3518f29..d5ae22fbb 100644
--- a/drivers/mmc/host/Kconfig
+++ b/drivers/mmc/host/Kconfig
@@ -677,9 +677,9 @@ config MMC_SH_MMCIF
depends on HAS_DMA
depends on SUPERH || ARCH_RENESAS || COMPILE_TEST
help
- This selects the MMC Host Interface controller (MMCIF).
+ This selects the MMC Host Interface controller (MMCIF) found in various
+ Renesas SoCs for SH and ARM architectures.
- This driver supports MMCIF in sh7724/sh7757/sh7372.
config MMC_JZ4740
tristate "JZ4740 SD/Multimedia Card Interface support"
diff --git a/drivers/mmc/host/atmel-mci.c b/drivers/mmc/host/atmel-mci.c
index 9268c41a8..0ad8ef565 100644
--- a/drivers/mmc/host/atmel-mci.c
+++ b/drivers/mmc/host/atmel-mci.c
@@ -1410,8 +1410,6 @@ static void atmci_request(struct mmc_host *mmc, struct mmc_request *mrq)
WARN_ON(slot->mrq);
dev_dbg(&host->pdev->dev, "MRQ: cmd %u\n", mrq->cmd->opcode);
- pm_runtime_get_sync(&host->pdev->dev);
-
/*
* We may "know" the card is gone even though there's still an
* electrical connection. If so, we really need to communicate
@@ -1442,8 +1440,6 @@ static void atmci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
struct atmel_mci *host = slot->host;
unsigned int i;
- pm_runtime_get_sync(&host->pdev->dev);
-
slot->sdc_reg &= ~ATMCI_SDCBUS_MASK;
switch (ios->bus_width) {
case MMC_BUS_WIDTH_1:
@@ -1576,8 +1572,6 @@ static void atmci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
break;
}
- pm_runtime_mark_last_busy(&host->pdev->dev);
- pm_runtime_put_autosuspend(&host->pdev->dev);
}
static int atmci_get_ro(struct mmc_host *mmc)
@@ -1669,9 +1663,6 @@ static void atmci_request_end(struct atmel_mci *host, struct mmc_request *mrq)
spin_unlock(&host->lock);
mmc_request_done(prev_mmc, mrq);
spin_lock(&host->lock);
-
- pm_runtime_mark_last_busy(&host->pdev->dev);
- pm_runtime_put_autosuspend(&host->pdev->dev);
}
static void atmci_command_complete(struct atmel_mci *host,
diff --git a/drivers/mmc/host/davinci_mmc.c b/drivers/mmc/host/davinci_mmc.c
index 693144e74..a56373c75 100644
--- a/drivers/mmc/host/davinci_mmc.c
+++ b/drivers/mmc/host/davinci_mmc.c
@@ -32,12 +32,10 @@
#include <linux/delay.h>
#include <linux/dmaengine.h>
#include <linux/dma-mapping.h>
-#include <linux/edma.h>
#include <linux/mmc/mmc.h>
#include <linux/of.h>
#include <linux/of_device.h>
-#include <linux/platform_data/edma.h>
#include <linux/platform_data/mmc-davinci.h>
/*
@@ -202,7 +200,6 @@ struct mmc_davinci_host {
u32 buffer_bytes_left;
u32 bytes_left;
- u32 rxdma, txdma;
struct dma_chan *dma_tx;
struct dma_chan *dma_rx;
bool use_dma;
@@ -513,35 +510,20 @@ davinci_release_dma_channels(struct mmc_davinci_host *host)
static int __init davinci_acquire_dma_channels(struct mmc_davinci_host *host)
{
- int r;
- dma_cap_mask_t mask;
-
- dma_cap_zero(mask);
- dma_cap_set(DMA_SLAVE, mask);
-
- host->dma_tx =
- dma_request_slave_channel_compat(mask, edma_filter_fn,
- &host->txdma, mmc_dev(host->mmc), "tx");
- if (!host->dma_tx) {
+ host->dma_tx = dma_request_chan(mmc_dev(host->mmc), "tx");
+ if (IS_ERR(host->dma_tx)) {
dev_err(mmc_dev(host->mmc), "Can't get dma_tx channel\n");
- return -ENODEV;
+ return PTR_ERR(host->dma_tx);
}
- host->dma_rx =
- dma_request_slave_channel_compat(mask, edma_filter_fn,
- &host->rxdma, mmc_dev(host->mmc), "rx");
- if (!host->dma_rx) {
+ host->dma_rx = dma_request_chan(mmc_dev(host->mmc), "rx");
+ if (IS_ERR(host->dma_rx)) {
dev_err(mmc_dev(host->mmc), "Can't get dma_rx channel\n");
- r = -ENODEV;
- goto free_master_write;
+ dma_release_channel(host->dma_tx);
+ return PTR_ERR(host->dma_rx);
}
return 0;
-
-free_master_write:
- dma_release_channel(host->dma_tx);
-
- return r;
}
/*----------------------------------------------------------------------*/
@@ -1223,7 +1205,7 @@ static int __init davinci_mmcsd_probe(struct platform_device *pdev)
struct mmc_davinci_host *host = NULL;
struct mmc_host *mmc = NULL;
struct resource *r, *mem = NULL;
- int ret = 0, irq = 0;
+ int ret, irq;
size_t mem_size;
const struct platform_device_id *id_entry;
@@ -1233,50 +1215,40 @@ static int __init davinci_mmcsd_probe(struct platform_device *pdev)
return -ENOENT;
}
- ret = -ENODEV;
r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
irq = platform_get_irq(pdev, 0);
if (!r || irq == NO_IRQ)
- goto out;
+ return -ENODEV;
- ret = -EBUSY;
mem_size = resource_size(r);
- mem = request_mem_region(r->start, mem_size, pdev->name);
+ mem = devm_request_mem_region(&pdev->dev, r->start, mem_size,
+ pdev->name);
if (!mem)
- goto out;
+ return -EBUSY;
- ret = -ENOMEM;
mmc = mmc_alloc_host(sizeof(struct mmc_davinci_host), &pdev->dev);
if (!mmc)
- goto out;
+ return -ENOMEM;
host = mmc_priv(mmc);
host->mmc = mmc; /* Important */
- r = platform_get_resource(pdev, IORESOURCE_DMA, 0);
- if (!r)
- dev_warn(&pdev->dev, "RX DMA resource not specified\n");
- else
- host->rxdma = r->start;
-
- r = platform_get_resource(pdev, IORESOURCE_DMA, 1);
- if (!r)
- dev_warn(&pdev->dev, "TX DMA resource not specified\n");
- else
- host->txdma = r->start;
-
host->mem_res = mem;
- host->base = ioremap(mem->start, mem_size);
- if (!host->base)
- goto out;
+ host->base = devm_ioremap(&pdev->dev, mem->start, mem_size);
+ if (!host->base) {
+ ret = -ENOMEM;
+ goto ioremap_fail;
+ }
- ret = -ENXIO;
- host->clk = clk_get(&pdev->dev, "MMCSDCLK");
+ host->clk = devm_clk_get(&pdev->dev, NULL);
if (IS_ERR(host->clk)) {
ret = PTR_ERR(host->clk);
- goto out;
+ goto clk_get_fail;
}
- clk_enable(host->clk);
+ ret = clk_prepare_enable(host->clk);
+ if (ret)
+ goto clk_prepare_enable_fail;
+
host->mmc_input_clk = clk_get_rate(host->clk);
init_mmcsd_host(host);
@@ -1291,8 +1263,13 @@ static int __init davinci_mmcsd_probe(struct platform_device *pdev)
host->mmc_irq = irq;
host->sdio_irq = platform_get_irq(pdev, 1);
- if (host->use_dma && davinci_acquire_dma_channels(host) != 0)
- host->use_dma = 0;
+ if (host->use_dma) {
+ ret = davinci_acquire_dma_channels(host);
+ if (ret == -EPROBE_DEFER)
+ goto dma_probe_defer;
+ else if (ret)
+ host->use_dma = 0;
+ }
/* REVISIT: someday, support IRQ-driven card detection. */
mmc->caps |= MMC_CAP_NEEDS_POLL;
@@ -1346,15 +1323,17 @@ static int __init davinci_mmcsd_probe(struct platform_device *pdev)
ret = mmc_add_host(mmc);
if (ret < 0)
- goto out;
+ goto mmc_add_host_fail;
- ret = request_irq(irq, mmc_davinci_irq, 0, mmc_hostname(mmc), host);
+ ret = devm_request_irq(&pdev->dev, irq, mmc_davinci_irq, 0,
+ mmc_hostname(mmc), host);
if (ret)
- goto out;
+ goto request_irq_fail;
if (host->sdio_irq >= 0) {
- ret = request_irq(host->sdio_irq, mmc_davinci_sdio_irq, 0,
- mmc_hostname(mmc), host);
+ ret = devm_request_irq(&pdev->dev, host->sdio_irq,
+ mmc_davinci_sdio_irq, 0,
+ mmc_hostname(mmc), host);
if (!ret)
mmc->caps |= MMC_CAP_SDIO_IRQ;
}
@@ -1367,28 +1346,18 @@ static int __init davinci_mmcsd_probe(struct platform_device *pdev)
return 0;
-out:
+request_irq_fail:
+ mmc_remove_host(mmc);
+mmc_add_host_fail:
mmc_davinci_cpufreq_deregister(host);
cpu_freq_fail:
- if (host) {
- davinci_release_dma_channels(host);
-
- if (host->clk) {
- clk_disable(host->clk);
- clk_put(host->clk);
- }
-
- if (host->base)
- iounmap(host->base);
- }
-
- if (mmc)
- mmc_free_host(mmc);
-
- if (mem)
- release_resource(mem);
-
- dev_dbg(&pdev->dev, "probe err %d\n", ret);
+ davinci_release_dma_channels(host);
+dma_probe_defer:
+ clk_disable_unprepare(host->clk);
+clk_prepare_enable_fail:
+clk_get_fail:
+ioremap_fail:
+ mmc_free_host(mmc);
return ret;
}
@@ -1397,25 +1366,11 @@ static int __exit davinci_mmcsd_remove(struct platform_device *pdev)
{
struct mmc_davinci_host *host = platform_get_drvdata(pdev);
- if (host) {
- mmc_davinci_cpufreq_deregister(host);
-
- mmc_remove_host(host->mmc);
- free_irq(host->mmc_irq, host);
- if (host->mmc->caps & MMC_CAP_SDIO_IRQ)
- free_irq(host->sdio_irq, host);
-
- davinci_release_dma_channels(host);
-
- clk_disable(host->clk);
- clk_put(host->clk);
-
- iounmap(host->base);
-
- release_resource(host->mem_res);
-
- mmc_free_host(host->mmc);
- }
+ mmc_remove_host(host->mmc);
+ mmc_davinci_cpufreq_deregister(host);
+ davinci_release_dma_channels(host);
+ clk_disable_unprepare(host->clk);
+ mmc_free_host(host->mmc);
return 0;
}
diff --git a/drivers/mmc/host/dw_mmc-exynos.c b/drivers/mmc/host/dw_mmc-exynos.c
index 8790f2afc..7e3a3247b 100644
--- a/drivers/mmc/host/dw_mmc-exynos.c
+++ b/drivers/mmc/host/dw_mmc-exynos.c
@@ -91,10 +91,14 @@ static inline u8 dw_mci_exynos_get_ciu_div(struct dw_mci *host)
return SDMMC_CLKSEL_GET_DIV(mci_readl(host, CLKSEL)) + 1;
}
-static int dw_mci_exynos_priv_init(struct dw_mci *host)
+static void dw_mci_exynos_config_smu(struct dw_mci *host)
{
struct dw_mci_exynos_priv_data *priv = host->priv;
+ /*
+ * If Exynos is provided the Security management,
+ * set for non-ecryption mode at this time.
+ */
if (priv->ctrl_type == DW_MCI_TYPE_EXYNOS5420_SMU ||
priv->ctrl_type == DW_MCI_TYPE_EXYNOS7_SMU) {
mci_writel(host, MPSBEGIN0, 0);
@@ -104,6 +108,13 @@ static int dw_mci_exynos_priv_init(struct dw_mci *host)
SDMMC_MPSCTRL_VALID |
SDMMC_MPSCTRL_NON_SECURE_WRITE_BIT);
}
+}
+
+static int dw_mci_exynos_priv_init(struct dw_mci *host)
+{
+ struct dw_mci_exynos_priv_data *priv = host->priv;
+
+ dw_mci_exynos_config_smu(host);
if (priv->ctrl_type >= DW_MCI_TYPE_EXYNOS5420) {
priv->saved_strobe_ctrl = mci_readl(host, HS400_DLINE_CTRL);
@@ -115,13 +126,6 @@ static int dw_mci_exynos_priv_init(struct dw_mci *host)
DQS_CTRL_GET_RD_DELAY(priv->saved_strobe_ctrl);
}
- return 0;
-}
-
-static int dw_mci_exynos_setup_clock(struct dw_mci *host)
-{
- struct dw_mci_exynos_priv_data *priv = host->priv;
-
host->bus_hz /= (priv->ciu_div + 1);
return 0;
@@ -169,7 +173,7 @@ static int dw_mci_exynos_resume(struct device *dev)
{
struct dw_mci *host = dev_get_drvdata(dev);
- dw_mci_exynos_priv_init(host);
+ dw_mci_exynos_config_smu(host);
return dw_mci_resume(host);
}
@@ -489,7 +493,6 @@ static unsigned long exynos_dwmmc_caps[4] = {
static const struct dw_mci_drv_data exynos_drv_data = {
.caps = exynos_dwmmc_caps,
.init = dw_mci_exynos_priv_init,
- .setup_clock = dw_mci_exynos_setup_clock,
.set_ios = dw_mci_exynos_set_ios,
.parse_dt = dw_mci_exynos_parse_dt,
.execute_tuning = dw_mci_exynos_execute_tuning,
diff --git a/drivers/mmc/host/dw_mmc-rockchip.c b/drivers/mmc/host/dw_mmc-rockchip.c
index 84e50f3a6..358b0dc85 100644
--- a/drivers/mmc/host/dw_mmc-rockchip.c
+++ b/drivers/mmc/host/dw_mmc-rockchip.c
@@ -26,13 +26,6 @@ struct dw_mci_rockchip_priv_data {
int default_sample_phase;
};
-static int dw_mci_rk3288_setup_clock(struct dw_mci *host)
-{
- host->bus_hz /= RK3288_CLKGEN_DIV;
-
- return 0;
-}
-
static void dw_mci_rk3288_set_ios(struct dw_mci *host, struct mmc_ios *ios)
{
struct dw_mci_rockchip_priv_data *priv = host->priv;
@@ -73,6 +66,70 @@ static void dw_mci_rk3288_set_ios(struct dw_mci *host, struct mmc_ios *ios)
/* Make sure we use phases which we can enumerate with */
if (!IS_ERR(priv->sample_clk))
clk_set_phase(priv->sample_clk, priv->default_sample_phase);
+
+ /*
+ * Set the drive phase offset based on speed mode to achieve hold times.
+ *
+ * NOTE: this is _not_ a value that is dynamically tuned and is also
+ * _not_ a value that will vary from board to board. It is a value
+ * that could vary between different SoC models if they had massively
+ * different output clock delays inside their dw_mmc IP block (delay_o),
+ * but since it's OK to overshoot a little we don't need to do complex
+ * calculations and can pick values that will just work for everyone.
+ *
+ * When picking values we'll stick with picking 0/90/180/270 since
+ * those can be made very accurately on all known Rockchip SoCs.
+ *
+ * Note that these values match values from the DesignWare Databook
+ * tables for the most part except for SDR12 and "ID mode". For those
+ * two modes the databook calculations assume a clock in of 50MHz. As
+ * seen above, we always use a clock in rate that is exactly the
+ * card's input clock (times RK3288_CLKGEN_DIV, but that gets divided
+ * back out before the controller sees it).
+ *
+ * From measurement of a single device, it appears that delay_o is
+ * about .5 ns. Since we try to leave a bit of margin, it's expected
+ * that numbers here will be fine even with much larger delay_o
+ * (the 1.4 ns assumed by the DesignWare Databook would result in the
+ * same results, for instance).
+ */
+ if (!IS_ERR(priv->drv_clk)) {
+ int phase;
+
+ /*
+ * In almost all cases a 90 degree phase offset will provide
+ * sufficient hold times across all valid input clock rates
+ * assuming delay_o is not absurd for a given SoC. We'll use
+ * that as a default.
+ */
+ phase = 90;
+
+ switch (ios->timing) {
+ case MMC_TIMING_MMC_DDR52:
+ /*
+ * Since clock in rate with MMC_DDR52 is doubled when
+ * bus width is 8 we need to double the phase offset
+ * to get the same timings.
+ */
+ if (ios->bus_width == MMC_BUS_WIDTH_8)
+ phase = 180;
+ break;
+ case MMC_TIMING_UHS_SDR104:
+ case MMC_TIMING_MMC_HS200:
+ /*
+ * In the case of 150 MHz clock (typical max for
+ * Rockchip SoCs), 90 degree offset will add a delay
+ * of 1.67 ns. That will meet min hold time of .8 ns
+ * as long as clock output delay is < .87 ns. On
+ * SoCs measured this seems to be OK, but it doesn't
+ * hurt to give margin here, so we use 180.
+ */
+ phase = 180;
+ break;
+ }
+
+ clk_set_phase(priv->drv_clk, phase);
+ }
}
#define NUM_PHASES 360
@@ -231,18 +288,30 @@ static int dw_mci_rockchip_init(struct dw_mci *host)
/* It needs this quirk on all Rockchip SoCs */
host->pdata->quirks |= DW_MCI_QUIRK_BROKEN_DTO;
+ if (of_device_is_compatible(host->dev->of_node,
+ "rockchip,rk3288-dw-mshc"))
+ host->bus_hz /= RK3288_CLKGEN_DIV;
+
return 0;
}
+/* Common capabilities of RK3288 SoC */
+static unsigned long dw_mci_rk3288_dwmmc_caps[4] = {
+ MMC_CAP_ERASE | MMC_CAP_CMD23,
+ MMC_CAP_ERASE | MMC_CAP_CMD23,
+ MMC_CAP_ERASE | MMC_CAP_CMD23,
+ MMC_CAP_ERASE | MMC_CAP_CMD23,
+};
+
static const struct dw_mci_drv_data rk2928_drv_data = {
.init = dw_mci_rockchip_init,
};
static const struct dw_mci_drv_data rk3288_drv_data = {
+ .caps = dw_mci_rk3288_dwmmc_caps,
.set_ios = dw_mci_rk3288_set_ios,
.execute_tuning = dw_mci_rk3288_execute_tuning,
.parse_dt = dw_mci_rk3288_parse_dt,
- .setup_clock = dw_mci_rk3288_setup_clock,
.init = dw_mci_rockchip_init,
};
@@ -269,33 +338,13 @@ static int dw_mci_rockchip_probe(struct platform_device *pdev)
return dw_mci_pltfm_register(pdev, drv_data);
}
-#ifdef CONFIG_PM_SLEEP
-static int dw_mci_rockchip_suspend(struct device *dev)
-{
- struct dw_mci *host = dev_get_drvdata(dev);
-
- return dw_mci_suspend(host);
-}
-
-static int dw_mci_rockchip_resume(struct device *dev)
-{
- struct dw_mci *host = dev_get_drvdata(dev);
-
- return dw_mci_resume(host);
-}
-#endif /* CONFIG_PM_SLEEP */
-
-static SIMPLE_DEV_PM_OPS(dw_mci_rockchip_pmops,
- dw_mci_rockchip_suspend,
- dw_mci_rockchip_resume);
-
static struct platform_driver dw_mci_rockchip_pltfm_driver = {
.probe = dw_mci_rockchip_probe,
.remove = dw_mci_pltfm_remove,
.driver = {
.name = "dwmmc_rockchip",
.of_match_table = dw_mci_rockchip_match,
- .pm = &dw_mci_rockchip_pmops,
+ .pm = &dw_mci_pltfm_pmops,
},
};
diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c
index 242f9a076..2cc6123b1 100644
--- a/drivers/mmc/host/dw_mmc.c
+++ b/drivers/mmc/host/dw_mmc.c
@@ -680,7 +680,7 @@ static const struct dw_mci_dma_ops dw_mci_idmac_ops = {
static void dw_mci_edmac_stop_dma(struct dw_mci *host)
{
- dmaengine_terminate_all(host->dms->ch);
+ dmaengine_terminate_async(host->dms->ch);
}
static int dw_mci_edmac_start_dma(struct dw_mci *host,
@@ -1431,7 +1431,7 @@ static int dw_mci_get_ro(struct mmc_host *mmc)
int gpio_ro = mmc_gpio_get_ro(mmc);
/* Use platform get_ro function, else try on board write protect */
- if (!IS_ERR_VALUE(gpio_ro))
+ if (gpio_ro >= 0)
read_only = gpio_ro;
else
read_only =
@@ -1454,7 +1454,7 @@ static int dw_mci_get_cd(struct mmc_host *mmc)
if ((mmc->caps & MMC_CAP_NEEDS_POLL) ||
(mmc->caps & MMC_CAP_NONREMOVABLE))
present = 1;
- else if (!IS_ERR_VALUE(gpio_cd))
+ else if (gpio_cd >= 0)
present = gpio_cd;
else
present = (mci_readl(slot->host, CDETECT) & (1 << slot->id))
@@ -2595,13 +2595,13 @@ static int dw_mci_init_slot(struct dw_mci *host, unsigned int id)
/* Useful defaults if platform data is unset. */
if (host->use_dma == TRANS_MODE_IDMAC) {
mmc->max_segs = host->ring_size;
- mmc->max_blk_size = 65536;
+ mmc->max_blk_size = 65535;
mmc->max_seg_size = 0x1000;
mmc->max_req_size = mmc->max_seg_size * host->ring_size;
mmc->max_blk_count = mmc->max_req_size / 512;
} else if (host->use_dma == TRANS_MODE_EDMAC) {
mmc->max_segs = 64;
- mmc->max_blk_size = 65536;
+ mmc->max_blk_size = 65535;
mmc->max_blk_count = 65535;
mmc->max_req_size =
mmc->max_blk_size * mmc->max_blk_count;
@@ -2609,7 +2609,7 @@ static int dw_mci_init_slot(struct dw_mci *host, unsigned int id)
} else {
/* TRANS_MODE_PIO */
mmc->max_segs = 64;
- mmc->max_blk_size = 65536; /* BLKSIZ is 16 bits */
+ mmc->max_blk_size = 65535; /* BLKSIZ is 16 bits */
mmc->max_blk_count = 512;
mmc->max_req_size = mmc->max_blk_size *
mmc->max_blk_count;
@@ -2927,7 +2927,7 @@ static void dw_mci_enable_cd(struct dw_mci *host)
if (slot->mmc->caps & MMC_CAP_NEEDS_POLL)
return;
- if (IS_ERR_VALUE(mmc_gpio_get_cd(slot->mmc)))
+ if (mmc_gpio_get_cd(slot->mmc) < 0)
break;
}
if (i == host->num_slots)
@@ -3003,15 +3003,6 @@ int dw_mci_probe(struct dw_mci *host)
}
}
- if (drv_data && drv_data->setup_clock) {
- ret = drv_data->setup_clock(host);
- if (ret) {
- dev_err(host->dev,
- "implementation specific clock setup failed\n");
- goto err_clk_ciu;
- }
- }
-
setup_timer(&host->cmd11_timer,
dw_mci_cmd11_timer, (unsigned long)host);
diff --git a/drivers/mmc/host/dw_mmc.h b/drivers/mmc/host/dw_mmc.h
index 68d5da2df..1e8d8380f 100644
--- a/drivers/mmc/host/dw_mmc.h
+++ b/drivers/mmc/host/dw_mmc.h
@@ -277,7 +277,6 @@ struct dw_mci_slot {
* dw_mci driver data - dw-mshc implementation specific driver data.
* @caps: mmc subsystem specified capabilities of the controller(s).
* @init: early implementation specific initialization.
- * @setup_clock: implementation specific clock configuration.
* @set_ios: handle bus specific extensions.
* @parse_dt: parse implementation specific device tree properties.
* @execute_tuning: implementation specific tuning procedure.
@@ -289,7 +288,6 @@ struct dw_mci_slot {
struct dw_mci_drv_data {
unsigned long *caps;
int (*init)(struct dw_mci *host);
- int (*setup_clock)(struct dw_mci *host);
void (*set_ios)(struct dw_mci *host, struct mmc_ios *ios);
int (*parse_dt)(struct dw_mci *host);
int (*execute_tuning)(struct dw_mci_slot *slot, u32 opcode);
diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c
index 2e6c96845..df990bb8c 100644
--- a/drivers/mmc/host/mmci.c
+++ b/drivers/mmc/host/mmci.c
@@ -226,16 +226,11 @@ static int mmci_card_busy(struct mmc_host *mmc)
unsigned long flags;
int busy = 0;
- pm_runtime_get_sync(mmc_dev(mmc));
-
spin_lock_irqsave(&host->lock, flags);
if (readl(host->base + MMCISTATUS) & MCI_ST_CARDBUSY)
busy = 1;
spin_unlock_irqrestore(&host->lock, flags);
- pm_runtime_mark_last_busy(mmc_dev(mmc));
- pm_runtime_put_autosuspend(mmc_dev(mmc));
-
return busy;
}
@@ -381,9 +376,6 @@ mmci_request_end(struct mmci_host *host, struct mmc_request *mrq)
host->cmd = NULL;
mmc_request_done(host->mmc, mrq);
-
- pm_runtime_mark_last_busy(mmc_dev(host->mmc));
- pm_runtime_put_autosuspend(mmc_dev(host->mmc));
}
static void mmci_set_mask1(struct mmci_host *host, unsigned int mask)
@@ -1290,8 +1282,6 @@ static void mmci_request(struct mmc_host *mmc, struct mmc_request *mrq)
return;
}
- pm_runtime_get_sync(mmc_dev(mmc));
-
spin_lock_irqsave(&host->lock, flags);
host->mrq = mrq;
@@ -1318,8 +1308,6 @@ static void mmci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
unsigned long flags;
int ret;
- pm_runtime_get_sync(mmc_dev(mmc));
-
if (host->plat->ios_handler &&
host->plat->ios_handler(mmc_dev(mmc), ios))
dev_err(mmc_dev(mmc), "platform ios_handler failed\n");
@@ -1414,9 +1402,6 @@ static void mmci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
mmci_reg_delay(host);
spin_unlock_irqrestore(&host->lock, flags);
-
- pm_runtime_mark_last_busy(mmc_dev(mmc));
- pm_runtime_put_autosuspend(mmc_dev(mmc));
}
static int mmci_get_cd(struct mmc_host *mmc)
@@ -1440,8 +1425,6 @@ static int mmci_sig_volt_switch(struct mmc_host *mmc, struct mmc_ios *ios)
if (!IS_ERR(mmc->supply.vqmmc)) {
- pm_runtime_get_sync(mmc_dev(mmc));
-
switch (ios->signal_voltage) {
case MMC_SIGNAL_VOLTAGE_330:
ret = regulator_set_voltage(mmc->supply.vqmmc,
@@ -1459,9 +1442,6 @@ static int mmci_sig_volt_switch(struct mmc_host *mmc, struct mmc_ios *ios)
if (ret)
dev_warn(mmc_dev(mmc), "Voltage switch failed\n");
-
- pm_runtime_mark_last_busy(mmc_dev(mmc));
- pm_runtime_put_autosuspend(mmc_dev(mmc));
}
return ret;
diff --git a/drivers/mmc/host/mtk-sd.c b/drivers/mmc/host/mtk-sd.c
index b17f30da9..5642f71f8 100644
--- a/drivers/mmc/host/mtk-sd.c
+++ b/drivers/mmc/host/mtk-sd.c
@@ -736,9 +736,6 @@ static void msdc_request_done(struct msdc_host *host, struct mmc_request *mrq)
if (mrq->data)
msdc_unprepare_data(host, mrq);
mmc_request_done(host->mmc, mrq);
-
- pm_runtime_mark_last_busy(host->dev);
- pm_runtime_put_autosuspend(host->dev);
}
/* returns true if command is fully handled; returns false otherwise */
@@ -886,8 +883,6 @@ static void msdc_ops_request(struct mmc_host *mmc, struct mmc_request *mrq)
WARN_ON(host->mrq);
host->mrq = mrq;
- pm_runtime_get_sync(host->dev);
-
if (mrq->data)
msdc_prepare_data(host, mrq);
@@ -1201,8 +1196,6 @@ static void msdc_ops_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
struct msdc_host *host = mmc_priv(mmc);
int ret;
- pm_runtime_get_sync(host->dev);
-
msdc_set_buswidth(host, ios->bus_width);
/* Suspend/Resume will do power off/on */
@@ -1214,7 +1207,7 @@ static void msdc_ops_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
ios->vdd);
if (ret) {
dev_err(host->dev, "Failed to set vmmc power!\n");
- goto end;
+ return;
}
}
break;
@@ -1242,10 +1235,6 @@ static void msdc_ops_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
if (host->mclk != ios->clock || host->timing != ios->timing)
msdc_set_mclk(host, ios->timing, ios->clock);
-
-end:
- pm_runtime_mark_last_busy(host->dev);
- pm_runtime_put_autosuspend(host->dev);
}
static u32 test_delay_bit(u32 delay, u32 bit)
@@ -1408,19 +1397,15 @@ static int msdc_execute_tuning(struct mmc_host *mmc, u32 opcode)
struct msdc_host *host = mmc_priv(mmc);
int ret;
- pm_runtime_get_sync(host->dev);
ret = msdc_tune_response(mmc, opcode);
if (ret == -EIO) {
dev_err(host->dev, "Tune response fail!\n");
- goto out;
+ return ret;
}
ret = msdc_tune_data(mmc, opcode);
if (ret == -EIO)
dev_err(host->dev, "Tune data fail!\n");
-out:
- pm_runtime_mark_last_busy(host->dev);
- pm_runtime_put_autosuspend(host->dev);
return ret;
}
diff --git a/drivers/mmc/host/omap.c b/drivers/mmc/host/omap.c
index b9958a123..f23d65eb0 100644
--- a/drivers/mmc/host/omap.c
+++ b/drivers/mmc/host/omap.c
@@ -23,7 +23,6 @@
#include <linux/spinlock.h>
#include <linux/timer.h>
#include <linux/of.h>
-#include <linux/omap-dma.h>
#include <linux/mmc/host.h>
#include <linux/mmc/card.h>
#include <linux/mmc/mmc.h>
@@ -1321,8 +1320,6 @@ static int mmc_omap_probe(struct platform_device *pdev)
struct omap_mmc_platform_data *pdata = pdev->dev.platform_data;
struct mmc_omap_host *host = NULL;
struct resource *res;
- dma_cap_mask_t mask;
- unsigned sig = 0;
int i, ret = 0;
int irq;
@@ -1382,29 +1379,34 @@ static int mmc_omap_probe(struct platform_device *pdev)
goto err_free_iclk;
}
- dma_cap_zero(mask);
- dma_cap_set(DMA_SLAVE, mask);
-
host->dma_tx_burst = -1;
host->dma_rx_burst = -1;
- res = platform_get_resource_byname(pdev, IORESOURCE_DMA, "tx");
- if (res)
- sig = res->start;
- host->dma_tx = dma_request_slave_channel_compat(mask,
- omap_dma_filter_fn, &sig, &pdev->dev, "tx");
- if (!host->dma_tx)
- dev_warn(host->dev, "unable to obtain TX DMA engine channel %u\n",
- sig);
-
- res = platform_get_resource_byname(pdev, IORESOURCE_DMA, "rx");
- if (res)
- sig = res->start;
- host->dma_rx = dma_request_slave_channel_compat(mask,
- omap_dma_filter_fn, &sig, &pdev->dev, "rx");
- if (!host->dma_rx)
- dev_warn(host->dev, "unable to obtain RX DMA engine channel %u\n",
- sig);
+ host->dma_tx = dma_request_chan(&pdev->dev, "tx");
+ if (IS_ERR(host->dma_tx)) {
+ ret = PTR_ERR(host->dma_tx);
+ if (ret == -EPROBE_DEFER) {
+ clk_put(host->fclk);
+ goto err_free_iclk;
+ }
+
+ host->dma_tx = NULL;
+ dev_warn(host->dev, "TX DMA channel request failed\n");
+ }
+
+ host->dma_rx = dma_request_chan(&pdev->dev, "rx");
+ if (IS_ERR(host->dma_rx)) {
+ ret = PTR_ERR(host->dma_rx);
+ if (ret == -EPROBE_DEFER) {
+ if (host->dma_tx)
+ dma_release_channel(host->dma_tx);
+ clk_put(host->fclk);
+ goto err_free_iclk;
+ }
+
+ host->dma_rx = NULL;
+ dev_warn(host->dev, "RX DMA channel request failed\n");
+ }
ret = request_irq(host->irq, mmc_omap_irq, 0, DRIVER_NAME, host);
if (ret)
diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c
index f9ac3bb5d..24ebc9a8d 100644
--- a/drivers/mmc/host/omap_hsmmc.c
+++ b/drivers/mmc/host/omap_hsmmc.c
@@ -32,7 +32,6 @@
#include <linux/of_irq.h>
#include <linux/of_gpio.h>
#include <linux/of_device.h>
-#include <linux/omap-dmaengine.h>
#include <linux/mmc/host.h>
#include <linux/mmc/core.h>
#include <linux/mmc/mmc.h>
@@ -351,15 +350,14 @@ static int omap_hsmmc_set_pbias(struct omap_hsmmc_host *host, bool power_on,
return 0;
}
-static int omap_hsmmc_set_power(struct device *dev, int power_on, int vdd)
+static int omap_hsmmc_set_power(struct omap_hsmmc_host *host, int power_on,
+ int vdd)
{
- struct omap_hsmmc_host *host =
- platform_get_drvdata(to_platform_device(dev));
struct mmc_host *mmc = host->mmc;
int ret = 0;
if (mmc_pdata(host)->set_power)
- return mmc_pdata(host)->set_power(dev, power_on, vdd);
+ return mmc_pdata(host)->set_power(host->dev, power_on, vdd);
/*
* If we don't see a Vcc regulator, assume it's a fixed
@@ -369,7 +367,7 @@ static int omap_hsmmc_set_power(struct device *dev, int power_on, int vdd)
return 0;
if (mmc_pdata(host)->before_set_reg)
- mmc_pdata(host)->before_set_reg(dev, power_on, vdd);
+ mmc_pdata(host)->before_set_reg(host->dev, power_on, vdd);
ret = omap_hsmmc_set_pbias(host, false, 0);
if (ret)
@@ -403,7 +401,7 @@ static int omap_hsmmc_set_power(struct device *dev, int power_on, int vdd)
}
if (mmc_pdata(host)->after_set_reg)
- mmc_pdata(host)->after_set_reg(dev, power_on, vdd);
+ mmc_pdata(host)->after_set_reg(host->dev, power_on, vdd);
return 0;
@@ -968,8 +966,6 @@ static void omap_hsmmc_request_done(struct omap_hsmmc_host *host, struct mmc_req
return;
host->mrq = NULL;
mmc_request_done(host->mmc, mrq);
- pm_runtime_mark_last_busy(host->dev);
- pm_runtime_put_autosuspend(host->dev);
}
/*
@@ -1250,17 +1246,15 @@ static int omap_hsmmc_switch_opcond(struct omap_hsmmc_host *host, int vdd)
int ret;
/* Disable the clocks */
- pm_runtime_put_sync(host->dev);
if (host->dbclk)
clk_disable_unprepare(host->dbclk);
/* Turn the power off */
- ret = omap_hsmmc_set_power(host->dev, 0, 0);
+ ret = omap_hsmmc_set_power(host, 0, 0);
/* Turn the power ON with given VDD 1.8 or 3.0v */
if (!ret)
- ret = omap_hsmmc_set_power(host->dev, 1, vdd);
- pm_runtime_get_sync(host->dev);
+ ret = omap_hsmmc_set_power(host, 1, vdd);
if (host->dbclk)
clk_prepare_enable(host->dbclk);
@@ -1368,8 +1362,6 @@ static void omap_hsmmc_dma_callback(void *param)
host->mrq = NULL;
mmc_request_done(host->mmc, mrq);
- pm_runtime_mark_last_busy(host->dev);
- pm_runtime_put_autosuspend(host->dev);
}
}
@@ -1602,7 +1594,6 @@ static void omap_hsmmc_request(struct mmc_host *mmc, struct mmc_request *req)
BUG_ON(host->req_in_progress);
BUG_ON(host->dma_ch != -1);
- pm_runtime_get_sync(host->dev);
if (host->protect_card) {
if (host->reqs_blocked < 3) {
/*
@@ -1619,8 +1610,6 @@ static void omap_hsmmc_request(struct mmc_host *mmc, struct mmc_request *req)
req->data->error = -EBADF;
req->cmd->retries = 0;
mmc_request_done(mmc, req);
- pm_runtime_mark_last_busy(host->dev);
- pm_runtime_put_autosuspend(host->dev);
return;
} else if (host->reqs_blocked)
host->reqs_blocked = 0;
@@ -1634,8 +1623,6 @@ static void omap_hsmmc_request(struct mmc_host *mmc, struct mmc_request *req)
req->data->error = err;
host->mrq = NULL;
mmc_request_done(mmc, req);
- pm_runtime_mark_last_busy(host->dev);
- pm_runtime_put_autosuspend(host->dev);
return;
}
if (req->sbc && !(host->flags & AUTO_CMD23)) {
@@ -1653,15 +1640,13 @@ static void omap_hsmmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
struct omap_hsmmc_host *host = mmc_priv(mmc);
int do_send_init_stream = 0;
- pm_runtime_get_sync(host->dev);
-
if (ios->power_mode != host->power_mode) {
switch (ios->power_mode) {
case MMC_POWER_OFF:
- omap_hsmmc_set_power(host->dev, 0, 0);
+ omap_hsmmc_set_power(host, 0, 0);
break;
case MMC_POWER_UP:
- omap_hsmmc_set_power(host->dev, 1, ios->vdd);
+ omap_hsmmc_set_power(host, 1, ios->vdd);
break;
case MMC_POWER_ON:
do_send_init_stream = 1;
@@ -1698,8 +1683,6 @@ static void omap_hsmmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
send_init_stream(host);
omap_hsmmc_set_bus_mode(host);
-
- pm_runtime_put_autosuspend(host->dev);
}
static int omap_hsmmc_get_cd(struct mmc_host *mmc)
@@ -1962,13 +1945,17 @@ MODULE_DEVICE_TABLE(of, omap_mmc_of_match);
static struct omap_hsmmc_platform_data *of_get_hsmmc_pdata(struct device *dev)
{
- struct omap_hsmmc_platform_data *pdata;
+ struct omap_hsmmc_platform_data *pdata, *legacy;
struct device_node *np = dev->of_node;
pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
if (!pdata)
return ERR_PTR(-ENOMEM); /* out of memory */
+ legacy = dev_get_platdata(dev);
+ if (legacy && legacy->name)
+ pdata->name = legacy->name;
+
if (of_find_property(np, "ti,dual-volt", NULL))
pdata->controller_flags |= OMAP_HSMMC_SUPPORTS_DUAL_VOLT;
@@ -2005,8 +1992,6 @@ static int omap_hsmmc_probe(struct platform_device *pdev)
struct resource *res;
int ret, irq;
const struct of_device_id *match;
- dma_cap_mask_t mask;
- unsigned tx_req, rx_req;
const struct omap_mmc_of_data *data;
void __iomem *base;
@@ -2136,44 +2121,17 @@ static int omap_hsmmc_probe(struct platform_device *pdev)
omap_hsmmc_conf_bus_power(host);
- if (!pdev->dev.of_node) {
- res = platform_get_resource_byname(pdev, IORESOURCE_DMA, "tx");
- if (!res) {
- dev_err(mmc_dev(host->mmc), "cannot get DMA TX channel\n");
- ret = -ENXIO;
- goto err_irq;
- }
- tx_req = res->start;
-
- res = platform_get_resource_byname(pdev, IORESOURCE_DMA, "rx");
- if (!res) {
- dev_err(mmc_dev(host->mmc), "cannot get DMA RX channel\n");
- ret = -ENXIO;
- goto err_irq;
- }
- rx_req = res->start;
- }
-
- dma_cap_zero(mask);
- dma_cap_set(DMA_SLAVE, mask);
-
- host->rx_chan =
- dma_request_slave_channel_compat(mask, omap_dma_filter_fn,
- &rx_req, &pdev->dev, "rx");
-
- if (!host->rx_chan) {
- dev_err(mmc_dev(host->mmc), "unable to obtain RX DMA engine channel\n");
- ret = -ENXIO;
+ host->rx_chan = dma_request_chan(&pdev->dev, "rx");
+ if (IS_ERR(host->rx_chan)) {
+ dev_err(mmc_dev(host->mmc), "RX DMA channel request failed\n");
+ ret = PTR_ERR(host->rx_chan);
goto err_irq;
}
- host->tx_chan =
- dma_request_slave_channel_compat(mask, omap_dma_filter_fn,
- &tx_req, &pdev->dev, "tx");
-
- if (!host->tx_chan) {
- dev_err(mmc_dev(host->mmc), "unable to obtain TX DMA engine channel\n");
- ret = -ENXIO;
+ host->tx_chan = dma_request_chan(&pdev->dev, "tx");
+ if (IS_ERR(host->tx_chan)) {
+ dev_err(mmc_dev(host->mmc), "TX DMA channel request failed\n");
+ ret = PTR_ERR(host->tx_chan);
goto err_irq;
}
@@ -2231,9 +2189,9 @@ err_slot_name:
mmc_remove_host(mmc);
err_irq:
device_init_wakeup(&pdev->dev, false);
- if (host->tx_chan)
+ if (!IS_ERR_OR_NULL(host->tx_chan))
dma_release_channel(host->tx_chan);
- if (host->rx_chan)
+ if (!IS_ERR_OR_NULL(host->rx_chan))
dma_release_channel(host->rx_chan);
pm_runtime_dont_use_autosuspend(host->dev);
pm_runtime_put_sync(host->dev);
diff --git a/drivers/mmc/host/pxamci.c b/drivers/mmc/host/pxamci.c
index 86fac3e86..c763b4045 100644
--- a/drivers/mmc/host/pxamci.c
+++ b/drivers/mmc/host/pxamci.c
@@ -789,14 +789,16 @@ static int pxamci_probe(struct platform_device *pdev)
gpio_direction_output(gpio_power,
host->pdata->gpio_power_invert);
}
- if (gpio_is_valid(gpio_ro))
+ if (gpio_is_valid(gpio_ro)) {
ret = mmc_gpio_request_ro(mmc, gpio_ro);
- if (ret) {
- dev_err(&pdev->dev, "Failed requesting gpio_ro %d\n", gpio_ro);
- goto out;
- } else {
- mmc->caps2 |= host->pdata->gpio_card_ro_invert ?
- 0 : MMC_CAP2_RO_ACTIVE_HIGH;
+ if (ret) {
+ dev_err(&pdev->dev, "Failed requesting gpio_ro %d\n",
+ gpio_ro);
+ goto out;
+ } else {
+ mmc->caps2 |= host->pdata->gpio_card_ro_invert ?
+ 0 : MMC_CAP2_RO_ACTIVE_HIGH;
+ }
}
if (gpio_is_valid(gpio_cd))
diff --git a/drivers/mmc/host/sdhci-acpi.c b/drivers/mmc/host/sdhci-acpi.c
index c0e206d72..458ffb763 100644
--- a/drivers/mmc/host/sdhci-acpi.c
+++ b/drivers/mmc/host/sdhci-acpi.c
@@ -200,8 +200,6 @@ static int bxt_get_cd(struct mmc_host *mmc)
if (!gpio_cd)
return 0;
- pm_runtime_get_sync(mmc->parent);
-
spin_lock_irqsave(&host->lock, flags);
if (host->flags & SDHCI_DEVICE_DEAD)
@@ -211,9 +209,6 @@ static int bxt_get_cd(struct mmc_host *mmc)
out:
spin_unlock_irqrestore(&host->lock, flags);
- pm_runtime_mark_last_busy(mmc->parent);
- pm_runtime_put_autosuspend(mmc->parent);
-
return ret;
}
@@ -267,8 +262,10 @@ static int sdhci_acpi_sd_probe_slot(struct platform_device *pdev,
/* Platform specific code during sd probe slot goes here */
- if (hid && !strcmp(hid, "80865ACA"))
+ if (hid && !strcmp(hid, "80865ACA")) {
host->mmc_host_ops.get_cd = bxt_get_cd;
+ host->mmc->caps |= MMC_CAP_AGGRESSIVE_PM;
+ }
return 0;
}
diff --git a/drivers/mmc/host/sdhci-esdhc-imx.c b/drivers/mmc/host/sdhci-esdhc-imx.c
index 2d300d87c..9d3ae1f4b 100644
--- a/drivers/mmc/host/sdhci-esdhc-imx.c
+++ b/drivers/mmc/host/sdhci-esdhc-imx.c
@@ -1011,7 +1011,7 @@ sdhci_esdhc_imx_probe_dt(struct platform_device *pdev,
if (ret)
return ret;
- if (!IS_ERR_VALUE(mmc_gpio_get_cd(host->mmc)))
+ if (mmc_gpio_get_cd(host->mmc) >= 0)
host->quirks &= ~SDHCI_QUIRK_BROKEN_CARD_DETECTION;
return 0;
diff --git a/drivers/mmc/host/sdhci-of-arasan.c b/drivers/mmc/host/sdhci-of-arasan.c
index 2e482b13d..b6f4c1d41 100644
--- a/drivers/mmc/host/sdhci-of-arasan.c
+++ b/drivers/mmc/host/sdhci-of-arasan.c
@@ -55,8 +55,32 @@ static unsigned int sdhci_arasan_get_timeout_clock(struct sdhci_host *host)
return freq;
}
+static void sdhci_arasan_set_clock(struct sdhci_host *host, unsigned int clock)
+{
+ struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
+ struct sdhci_arasan_data *sdhci_arasan = sdhci_pltfm_priv(pltfm_host);
+ bool ctrl_phy = false;
+
+ if (clock > MMC_HIGH_52_MAX_DTR && (!IS_ERR(sdhci_arasan->phy)))
+ ctrl_phy = true;
+
+ if (ctrl_phy) {
+ spin_unlock_irq(&host->lock);
+ phy_power_off(sdhci_arasan->phy);
+ spin_lock_irq(&host->lock);
+ }
+
+ sdhci_set_clock(host, clock);
+
+ if (ctrl_phy) {
+ spin_unlock_irq(&host->lock);
+ phy_power_on(sdhci_arasan->phy);
+ spin_lock_irq(&host->lock);
+ }
+}
+
static struct sdhci_ops sdhci_arasan_ops = {
- .set_clock = sdhci_set_clock,
+ .set_clock = sdhci_arasan_set_clock,
.get_max_clock = sdhci_pltfm_clk_get_max_clock,
.get_timeout_clock = sdhci_arasan_get_timeout_clock,
.set_bus_width = sdhci_set_bus_width,
diff --git a/drivers/mmc/host/sdhci-of-at91.c b/drivers/mmc/host/sdhci-of-at91.c
index 2703aa90d..d4cef713d 100644
--- a/drivers/mmc/host/sdhci-of-at91.c
+++ b/drivers/mmc/host/sdhci-of-at91.c
@@ -15,8 +15,10 @@
*/
#include <linux/clk.h>
+#include <linux/delay.h>
#include <linux/err.h>
#include <linux/io.h>
+#include <linux/kernel.h>
#include <linux/mmc/host.h>
#include <linux/mmc/slot-gpio.h>
#include <linux/module.h>
@@ -31,14 +33,60 @@
#define SDMMC_CACR_CAPWREN BIT(0)
#define SDMMC_CACR_KEY (0x46 << 8)
+#define SDHCI_AT91_PRESET_COMMON_CONF 0x400 /* drv type B, programmable clock mode */
+
struct sdhci_at91_priv {
struct clk *hclock;
struct clk *gck;
struct clk *mainck;
};
+static void sdhci_at91_set_clock(struct sdhci_host *host, unsigned int clock)
+{
+ u16 clk;
+ unsigned long timeout;
+
+ host->mmc->actual_clock = 0;
+
+ /*
+ * There is no requirement to disable the internal clock before
+ * changing the SD clock configuration. Moreover, disabling the
+ * internal clock, changing the configuration and re-enabling the
+ * internal clock causes some bugs. It can prevent to get the internal
+ * clock stable flag ready and an unexpected switch to the base clock
+ * when using presets.
+ */
+ clk = sdhci_readw(host, SDHCI_CLOCK_CONTROL);
+ clk &= SDHCI_CLOCK_INT_EN;
+ sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL);
+
+ if (clock == 0)
+ return;
+
+ clk = sdhci_calc_clk(host, clock, &host->mmc->actual_clock);
+
+ clk |= SDHCI_CLOCK_INT_EN;
+ sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL);
+
+ /* Wait max 20 ms */
+ timeout = 20;
+ while (!((clk = sdhci_readw(host, SDHCI_CLOCK_CONTROL))
+ & SDHCI_CLOCK_INT_STABLE)) {
+ if (timeout == 0) {
+ pr_err("%s: Internal clock never stabilised.\n",
+ mmc_hostname(host->mmc));
+ return;
+ }
+ timeout--;
+ mdelay(1);
+ }
+
+ clk |= SDHCI_CLOCK_CARD_EN;
+ sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL);
+}
+
static const struct sdhci_ops sdhci_at91_sama5d2_ops = {
- .set_clock = sdhci_set_clock,
+ .set_clock = sdhci_at91_set_clock,
.set_bus_width = sdhci_set_bus_width,
.reset = sdhci_reset,
.set_uhs_signaling = sdhci_set_uhs_signaling,
@@ -46,7 +94,6 @@ static const struct sdhci_ops sdhci_at91_sama5d2_ops = {
static const struct sdhci_pltfm_data soc_data_sama5d2 = {
.ops = &sdhci_at91_sama5d2_ops,
- .quirks2 = SDHCI_QUIRK2_NEED_DELAY_AFTER_INT_CLK_RST,
};
static const struct of_device_id sdhci_at91_dt_match[] = {
@@ -119,6 +166,7 @@ static int sdhci_at91_probe(struct platform_device *pdev)
unsigned int clk_base, clk_mul;
unsigned int gck_rate, real_gck_rate;
int ret;
+ unsigned int preset_div;
match = of_match_device(sdhci_at91_dt_match, &pdev->dev);
if (!match)
@@ -186,6 +234,28 @@ static int sdhci_at91_probe(struct platform_device *pdev)
clk_mul, real_gck_rate);
}
+ /*
+ * We have to set preset values because it depends on the clk_mul
+ * value. Moreover, SDR104 is supported in a degraded mode since the
+ * maximum sd clock value is 120 MHz instead of 208 MHz. For that
+ * reason, we need to use presets to support SDR104.
+ */
+ preset_div = DIV_ROUND_UP(real_gck_rate, 24000000) - 1;
+ writew(SDHCI_AT91_PRESET_COMMON_CONF | preset_div,
+ host->ioaddr + SDHCI_PRESET_FOR_SDR12);
+ preset_div = DIV_ROUND_UP(real_gck_rate, 50000000) - 1;
+ writew(SDHCI_AT91_PRESET_COMMON_CONF | preset_div,
+ host->ioaddr + SDHCI_PRESET_FOR_SDR25);
+ preset_div = DIV_ROUND_UP(real_gck_rate, 100000000) - 1;
+ writew(SDHCI_AT91_PRESET_COMMON_CONF | preset_div,
+ host->ioaddr + SDHCI_PRESET_FOR_SDR50);
+ preset_div = DIV_ROUND_UP(real_gck_rate, 120000000) - 1;
+ writew(SDHCI_AT91_PRESET_COMMON_CONF | preset_div,
+ host->ioaddr + SDHCI_PRESET_FOR_SDR104);
+ preset_div = DIV_ROUND_UP(real_gck_rate, 50000000) - 1;
+ writew(SDHCI_AT91_PRESET_COMMON_CONF | preset_div,
+ host->ioaddr + SDHCI_PRESET_FOR_DDR50);
+
clk_prepare_enable(priv->mainck);
clk_prepare_enable(priv->gck);
@@ -219,7 +289,7 @@ static int sdhci_at91_probe(struct platform_device *pdev)
* to enable polling via device tree with broken-cd property.
*/
if (!(host->mmc->caps & MMC_CAP_NONREMOVABLE) &&
- IS_ERR_VALUE(mmc_gpio_get_cd(host->mmc))) {
+ mmc_gpio_get_cd(host->mmc) < 0) {
host->mmc->caps |= MMC_CAP_NEEDS_POLL;
host->quirks &= ~SDHCI_QUIRK_BROKEN_CARD_DETECTION;
}
diff --git a/drivers/mmc/host/sdhci-pci-core.c b/drivers/mmc/host/sdhci-pci-core.c
index b42dd6a1b..a4dbf7421 100644
--- a/drivers/mmc/host/sdhci-pci-core.c
+++ b/drivers/mmc/host/sdhci-pci-core.c
@@ -340,8 +340,6 @@ static int bxt_get_cd(struct mmc_host *mmc)
if (!gpio_cd)
return 0;
- pm_runtime_get_sync(mmc->parent);
-
spin_lock_irqsave(&host->lock, flags);
if (host->flags & SDHCI_DEVICE_DEAD)
@@ -351,9 +349,6 @@ static int bxt_get_cd(struct mmc_host *mmc)
out:
spin_unlock_irqrestore(&host->lock, flags);
- pm_runtime_mark_last_busy(mmc->parent);
- pm_runtime_put_autosuspend(mmc->parent);
-
return ret;
}
@@ -388,8 +383,10 @@ static int byt_sd_probe_slot(struct sdhci_pci_slot *slot)
slot->cd_override_level = true;
if (slot->chip->pdev->device == PCI_DEVICE_ID_INTEL_BXT_SD ||
slot->chip->pdev->device == PCI_DEVICE_ID_INTEL_BXTM_SD ||
- slot->chip->pdev->device == PCI_DEVICE_ID_INTEL_APL_SD)
+ slot->chip->pdev->device == PCI_DEVICE_ID_INTEL_APL_SD) {
slot->host->mmc_host_ops.get_cd = bxt_get_cd;
+ slot->host->mmc->caps |= MMC_CAP_AGGRESSIVE_PM;
+ }
return 0;
}
diff --git a/drivers/mmc/host/sdhci-pic32.c b/drivers/mmc/host/sdhci-pic32.c
index 059df707a..72c13b6f0 100644
--- a/drivers/mmc/host/sdhci-pic32.c
+++ b/drivers/mmc/host/sdhci-pic32.c
@@ -243,7 +243,6 @@ MODULE_DEVICE_TABLE(of, pic32_sdhci_id_table);
static struct platform_driver pic32_sdhci_driver = {
.driver = {
.name = "pic32-sdhci",
- .owner = THIS_MODULE,
.of_match_table = of_match_ptr(pic32_sdhci_id_table),
},
.probe = pic32_sdhci_probe,
diff --git a/drivers/mmc/host/sdhci-pltfm.c b/drivers/mmc/host/sdhci-pltfm.c
index 072bb27a6..64f287a03 100644
--- a/drivers/mmc/host/sdhci-pltfm.c
+++ b/drivers/mmc/host/sdhci-pltfm.c
@@ -119,16 +119,22 @@ struct sdhci_host *sdhci_pltfm_init(struct platform_device *pdev,
{
struct sdhci_host *host;
struct resource *iomem;
- int ret;
+ void __iomem *ioaddr;
+ int irq, ret;
iomem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!iomem) {
- ret = -ENOMEM;
+ ioaddr = devm_ioremap_resource(&pdev->dev, iomem);
+ if (IS_ERR(ioaddr)) {
+ ret = PTR_ERR(ioaddr);
goto err;
}
- if (resource_size(iomem) < 0x100)
- dev_err(&pdev->dev, "Invalid iomem size!\n");
+ irq = platform_get_irq(pdev, 0);
+ if (irq < 0) {
+ dev_err(&pdev->dev, "failed to get IRQ number\n");
+ ret = irq;
+ goto err;
+ }
host = sdhci_alloc_host(&pdev->dev,
sizeof(struct sdhci_pltfm_host) + priv_size);
@@ -138,6 +144,8 @@ struct sdhci_host *sdhci_pltfm_init(struct platform_device *pdev,
goto err;
}
+ host->ioaddr = ioaddr;
+ host->irq = irq;
host->hw_name = dev_name(&pdev->dev);
if (pdata && pdata->ops)
host->ops = pdata->ops;
@@ -148,22 +156,6 @@ struct sdhci_host *sdhci_pltfm_init(struct platform_device *pdev,
host->quirks2 = pdata->quirks2;
}
- host->irq = platform_get_irq(pdev, 0);
-
- if (!request_mem_region(iomem->start, resource_size(iomem),
- mmc_hostname(host->mmc))) {
- dev_err(&pdev->dev, "cannot request region\n");
- ret = -EBUSY;
- goto err_request;
- }
-
- host->ioaddr = ioremap(iomem->start, resource_size(iomem));
- if (!host->ioaddr) {
- dev_err(&pdev->dev, "failed to remap registers\n");
- ret = -ENOMEM;
- goto err_remap;
- }
-
/*
* Some platforms need to probe the controller to be able to
* determine which caps should be used.
@@ -174,11 +166,6 @@ struct sdhci_host *sdhci_pltfm_init(struct platform_device *pdev,
platform_set_drvdata(pdev, host);
return host;
-
-err_remap:
- release_mem_region(iomem->start, resource_size(iomem));
-err_request:
- sdhci_free_host(host);
err:
dev_err(&pdev->dev, "%s failed %d\n", __func__, ret);
return ERR_PTR(ret);
@@ -188,10 +175,7 @@ EXPORT_SYMBOL_GPL(sdhci_pltfm_init);
void sdhci_pltfm_free(struct platform_device *pdev)
{
struct sdhci_host *host = platform_get_drvdata(pdev);
- struct resource *iomem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- iounmap(host->ioaddr);
- release_mem_region(iomem->start, resource_size(iomem));
sdhci_free_host(host);
}
EXPORT_SYMBOL_GPL(sdhci_pltfm_free);
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index 6bd3d1794..0e3d7c056 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -38,11 +38,6 @@
#define DBG(f, x...) \
pr_debug(DRIVER_NAME " [%s()]: " f, __func__,## x)
-#if defined(CONFIG_LEDS_CLASS) || (defined(CONFIG_LEDS_CLASS_MODULE) && \
- defined(CONFIG_MMC_SDHCI_MODULE))
-#define SDHCI_USE_LEDS_CLASS
-#endif
-
#define MAX_TUNING_LOOP 40
static unsigned int debug_quirks = 0;
@@ -53,29 +48,7 @@ static void sdhci_finish_data(struct sdhci_host *);
static void sdhci_finish_command(struct sdhci_host *);
static int sdhci_execute_tuning(struct mmc_host *mmc, u32 opcode);
static void sdhci_enable_preset_value(struct sdhci_host *host, bool enable);
-static int sdhci_do_get_cd(struct sdhci_host *host);
-
-#ifdef CONFIG_PM
-static int sdhci_runtime_pm_get(struct sdhci_host *host);
-static int sdhci_runtime_pm_put(struct sdhci_host *host);
-static void sdhci_runtime_pm_bus_on(struct sdhci_host *host);
-static void sdhci_runtime_pm_bus_off(struct sdhci_host *host);
-#else
-static inline int sdhci_runtime_pm_get(struct sdhci_host *host)
-{
- return 0;
-}
-static inline int sdhci_runtime_pm_put(struct sdhci_host *host)
-{
- return 0;
-}
-static void sdhci_runtime_pm_bus_on(struct sdhci_host *host)
-{
-}
-static void sdhci_runtime_pm_bus_off(struct sdhci_host *host)
-{
-}
-#endif
+static int sdhci_get_cd(struct mmc_host *mmc);
static void sdhci_dumpregs(struct sdhci_host *host)
{
@@ -171,6 +144,22 @@ static void sdhci_disable_card_detection(struct sdhci_host *host)
sdhci_set_card_detection(host, false);
}
+static void sdhci_runtime_pm_bus_on(struct sdhci_host *host)
+{
+ if (host->bus_on)
+ return;
+ host->bus_on = true;
+ pm_runtime_get_noresume(host->mmc->parent);
+}
+
+static void sdhci_runtime_pm_bus_off(struct sdhci_host *host)
+{
+ if (!host->bus_on)
+ return;
+ host->bus_on = false;
+ pm_runtime_put_noidle(host->mmc->parent);
+}
+
void sdhci_reset(struct sdhci_host *host, u8 mask)
{
unsigned long timeout;
@@ -204,7 +193,7 @@ EXPORT_SYMBOL_GPL(sdhci_reset);
static void sdhci_do_reset(struct sdhci_host *host, u8 mask)
{
if (host->quirks & SDHCI_QUIRK_NO_CARD_NO_RESET) {
- if (!sdhci_do_get_cd(host))
+ if (!sdhci_get_cd(host->mmc))
return;
}
@@ -252,7 +241,7 @@ static void sdhci_reinit(struct sdhci_host *host)
sdhci_enable_card_detection(host);
}
-static void sdhci_activate_led(struct sdhci_host *host)
+static void __sdhci_led_activate(struct sdhci_host *host)
{
u8 ctrl;
@@ -261,7 +250,7 @@ static void sdhci_activate_led(struct sdhci_host *host)
sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL);
}
-static void sdhci_deactivate_led(struct sdhci_host *host)
+static void __sdhci_led_deactivate(struct sdhci_host *host)
{
u8 ctrl;
@@ -270,9 +259,9 @@ static void sdhci_deactivate_led(struct sdhci_host *host)
sdhci_writeb(host, ctrl, SDHCI_HOST_CONTROL);
}
-#ifdef SDHCI_USE_LEDS_CLASS
+#if IS_REACHABLE(CONFIG_LEDS_CLASS)
static void sdhci_led_control(struct led_classdev *led,
- enum led_brightness brightness)
+ enum led_brightness brightness)
{
struct sdhci_host *host = container_of(led, struct sdhci_host, led);
unsigned long flags;
@@ -283,12 +272,62 @@ static void sdhci_led_control(struct led_classdev *led,
goto out;
if (brightness == LED_OFF)
- sdhci_deactivate_led(host);
+ __sdhci_led_deactivate(host);
else
- sdhci_activate_led(host);
+ __sdhci_led_activate(host);
out:
spin_unlock_irqrestore(&host->lock, flags);
}
+
+static int sdhci_led_register(struct sdhci_host *host)
+{
+ struct mmc_host *mmc = host->mmc;
+
+ snprintf(host->led_name, sizeof(host->led_name),
+ "%s::", mmc_hostname(mmc));
+
+ host->led.name = host->led_name;
+ host->led.brightness = LED_OFF;
+ host->led.default_trigger = mmc_hostname(mmc);
+ host->led.brightness_set = sdhci_led_control;
+
+ return led_classdev_register(mmc_dev(mmc), &host->led);
+}
+
+static void sdhci_led_unregister(struct sdhci_host *host)
+{
+ led_classdev_unregister(&host->led);
+}
+
+static inline void sdhci_led_activate(struct sdhci_host *host)
+{
+}
+
+static inline void sdhci_led_deactivate(struct sdhci_host *host)
+{
+}
+
+#else
+
+static inline int sdhci_led_register(struct sdhci_host *host)
+{
+ return 0;
+}
+
+static inline void sdhci_led_unregister(struct sdhci_host *host)
+{
+}
+
+static inline void sdhci_led_activate(struct sdhci_host *host)
+{
+ __sdhci_led_activate(host);
+}
+
+static inline void sdhci_led_deactivate(struct sdhci_host *host)
+{
+ __sdhci_led_deactivate(host);
+}
+
#endif
/*****************************************************************************\
@@ -1091,23 +1130,14 @@ static u16 sdhci_get_preset_value(struct sdhci_host *host)
return preset;
}
-void sdhci_set_clock(struct sdhci_host *host, unsigned int clock)
+u16 sdhci_calc_clk(struct sdhci_host *host, unsigned int clock,
+ unsigned int *actual_clock)
{
int div = 0; /* Initialized for compiler warning */
int real_div = div, clk_mul = 1;
u16 clk = 0;
- unsigned long timeout;
bool switch_base_clk = false;
- host->mmc->actual_clock = 0;
-
- sdhci_writew(host, 0, SDHCI_CLOCK_CONTROL);
- if (host->quirks2 & SDHCI_QUIRK2_NEED_DELAY_AFTER_INT_CLK_RST)
- mdelay(1);
-
- if (clock == 0)
- return;
-
if (host->version >= SDHCI_SPEC_300) {
if (host->preset_enabled) {
u16 pre_val;
@@ -1184,10 +1214,29 @@ void sdhci_set_clock(struct sdhci_host *host, unsigned int clock)
clock_set:
if (real_div)
- host->mmc->actual_clock = (host->max_clk * clk_mul) / real_div;
+ *actual_clock = (host->max_clk * clk_mul) / real_div;
clk |= (div & SDHCI_DIV_MASK) << SDHCI_DIVIDER_SHIFT;
clk |= ((div & SDHCI_DIV_HI_MASK) >> SDHCI_DIV_MASK_LEN)
<< SDHCI_DIVIDER_HI_SHIFT;
+
+ return clk;
+}
+EXPORT_SYMBOL_GPL(sdhci_calc_clk);
+
+void sdhci_set_clock(struct sdhci_host *host, unsigned int clock)
+{
+ u16 clk;
+ unsigned long timeout;
+
+ host->mmc->actual_clock = 0;
+
+ sdhci_writew(host, 0, SDHCI_CLOCK_CONTROL);
+
+ if (clock == 0)
+ return;
+
+ clk = sdhci_calc_clk(host, clock, &host->mmc->actual_clock);
+
clk |= SDHCI_CLOCK_INT_EN;
sdhci_writew(host, clk, SDHCI_CLOCK_CONTROL);
@@ -1319,8 +1368,6 @@ static void sdhci_request(struct mmc_host *mmc, struct mmc_request *mrq)
host = mmc_priv(mmc);
- sdhci_runtime_pm_get(host);
-
/* Firstly check card presence */
present = mmc->ops->get_cd(mmc);
@@ -1328,9 +1375,7 @@ static void sdhci_request(struct mmc_host *mmc, struct mmc_request *mrq)
WARN_ON(host->mrq != NULL);
-#ifndef SDHCI_USE_LEDS_CLASS
- sdhci_activate_led(host);
-#endif
+ sdhci_led_activate(host);
/*
* Ensure we don't send the STOP for non-SET_BLOCK_COUNTED
@@ -1405,11 +1450,11 @@ void sdhci_set_uhs_signaling(struct sdhci_host *host, unsigned timing)
}
EXPORT_SYMBOL_GPL(sdhci_set_uhs_signaling);
-static void sdhci_do_set_ios(struct sdhci_host *host, struct mmc_ios *ios)
+static void sdhci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
{
+ struct sdhci_host *host = mmc_priv(mmc);
unsigned long flags;
u8 ctrl;
- struct mmc_host *mmc = host->mmc;
spin_lock_irqsave(&host->lock, flags);
@@ -1563,18 +1608,10 @@ static void sdhci_do_set_ios(struct sdhci_host *host, struct mmc_ios *ios)
spin_unlock_irqrestore(&host->lock, flags);
}
-static void sdhci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
+static int sdhci_get_cd(struct mmc_host *mmc)
{
struct sdhci_host *host = mmc_priv(mmc);
-
- sdhci_runtime_pm_get(host);
- sdhci_do_set_ios(host, ios);
- sdhci_runtime_pm_put(host);
-}
-
-static int sdhci_do_get_cd(struct sdhci_host *host)
-{
- int gpio_cd = mmc_gpio_get_cd(host->mmc);
+ int gpio_cd = mmc_gpio_get_cd(mmc);
if (host->flags & SDHCI_DEVICE_DEAD)
return 0;
@@ -1587,7 +1624,7 @@ static int sdhci_do_get_cd(struct sdhci_host *host)
* Try slot gpio detect, if defined it take precedence
* over build in controller functionality
*/
- if (!IS_ERR_VALUE(gpio_cd))
+ if (gpio_cd >= 0)
return !!gpio_cd;
/* If polling, assume that the card is always present. */
@@ -1598,17 +1635,6 @@ static int sdhci_do_get_cd(struct sdhci_host *host)
return !!(sdhci_readl(host, SDHCI_PRESENT_STATE) & SDHCI_CARD_PRESENT);
}
-static int sdhci_get_cd(struct mmc_host *mmc)
-{
- struct sdhci_host *host = mmc_priv(mmc);
- int ret;
-
- sdhci_runtime_pm_get(host);
- ret = sdhci_do_get_cd(host);
- sdhci_runtime_pm_put(host);
- return ret;
-}
-
static int sdhci_check_ro(struct sdhci_host *host)
{
unsigned long flags;
@@ -1633,8 +1659,9 @@ static int sdhci_check_ro(struct sdhci_host *host)
#define SAMPLE_COUNT 5
-static int sdhci_do_get_ro(struct sdhci_host *host)
+static int sdhci_get_ro(struct mmc_host *mmc)
{
+ struct sdhci_host *host = mmc_priv(mmc);
int i, ro_count;
if (!(host->quirks & SDHCI_QUIRK_UNSTABLE_RO_DETECT))
@@ -1659,17 +1686,6 @@ static void sdhci_hw_reset(struct mmc_host *mmc)
host->ops->hw_reset(host);
}
-static int sdhci_get_ro(struct mmc_host *mmc)
-{
- struct sdhci_host *host = mmc_priv(mmc);
- int ret;
-
- sdhci_runtime_pm_get(host);
- ret = sdhci_do_get_ro(host);
- sdhci_runtime_pm_put(host);
- return ret;
-}
-
static void sdhci_enable_sdio_irq_nolock(struct sdhci_host *host, int enable)
{
if (!(host->flags & SDHCI_DEVICE_DEAD)) {
@@ -1689,8 +1705,6 @@ static void sdhci_enable_sdio_irq(struct mmc_host *mmc, int enable)
struct sdhci_host *host = mmc_priv(mmc);
unsigned long flags;
- sdhci_runtime_pm_get(host);
-
spin_lock_irqsave(&host->lock, flags);
if (enable)
host->flags |= SDHCI_SDIO_IRQ_ENABLED;
@@ -1699,14 +1713,12 @@ static void sdhci_enable_sdio_irq(struct mmc_host *mmc, int enable)
sdhci_enable_sdio_irq_nolock(host, enable);
spin_unlock_irqrestore(&host->lock, flags);
-
- sdhci_runtime_pm_put(host);
}
-static int sdhci_do_start_signal_voltage_switch(struct sdhci_host *host,
- struct mmc_ios *ios)
+static int sdhci_start_signal_voltage_switch(struct mmc_host *mmc,
+ struct mmc_ios *ios)
{
- struct mmc_host *mmc = host->mmc;
+ struct sdhci_host *host = mmc_priv(mmc);
u16 ctrl;
int ret;
@@ -1794,29 +1806,13 @@ static int sdhci_do_start_signal_voltage_switch(struct sdhci_host *host,
}
}
-static int sdhci_start_signal_voltage_switch(struct mmc_host *mmc,
- struct mmc_ios *ios)
-{
- struct sdhci_host *host = mmc_priv(mmc);
- int err;
-
- if (host->version < SDHCI_SPEC_300)
- return 0;
- sdhci_runtime_pm_get(host);
- err = sdhci_do_start_signal_voltage_switch(host, ios);
- sdhci_runtime_pm_put(host);
- return err;
-}
-
static int sdhci_card_busy(struct mmc_host *mmc)
{
struct sdhci_host *host = mmc_priv(mmc);
u32 present_state;
- sdhci_runtime_pm_get(host);
/* Check whether DAT[3:0] is 0000 */
present_state = sdhci_readl(host, SDHCI_PRESENT_STATE);
- sdhci_runtime_pm_put(host);
return !(present_state & SDHCI_DATA_LVL_MASK);
}
@@ -1843,7 +1839,6 @@ static int sdhci_execute_tuning(struct mmc_host *mmc, u32 opcode)
unsigned int tuning_count = 0;
bool hs400_tuning;
- sdhci_runtime_pm_get(host);
spin_lock_irqsave(&host->lock, flags);
hs400_tuning = host->flags & SDHCI_HS400_TUNING;
@@ -1879,8 +1874,7 @@ static int sdhci_execute_tuning(struct mmc_host *mmc, u32 opcode)
break;
case MMC_TIMING_UHS_SDR50:
- if (host->flags & SDHCI_SDR50_NEEDS_TUNING ||
- host->flags & SDHCI_SDR104_NEEDS_TUNING)
+ if (host->flags & SDHCI_SDR50_NEEDS_TUNING)
break;
/* FALLTHROUGH */
@@ -1891,7 +1885,6 @@ static int sdhci_execute_tuning(struct mmc_host *mmc, u32 opcode)
if (host->ops->platform_execute_tuning) {
spin_unlock_irqrestore(&host->lock, flags);
err = host->ops->platform_execute_tuning(host, opcode);
- sdhci_runtime_pm_put(host);
return err;
}
@@ -2023,8 +2016,6 @@ out:
sdhci_writel(host, host->ier, SDHCI_SIGNAL_ENABLE);
out_unlock:
spin_unlock_irqrestore(&host->lock, flags);
- sdhci_runtime_pm_put(host);
-
return err;
}
@@ -2105,7 +2096,7 @@ static void sdhci_card_event(struct mmc_host *mmc)
if (host->ops->card_event)
host->ops->card_event(host);
- present = sdhci_do_get_cd(host);
+ present = sdhci_get_cd(host->mmc);
spin_lock_irqsave(&host->lock, flags);
@@ -2214,15 +2205,12 @@ static void sdhci_tasklet_finish(unsigned long param)
host->cmd = NULL;
host->data = NULL;
-#ifndef SDHCI_USE_LEDS_CLASS
- sdhci_deactivate_led(host);
-#endif
+ sdhci_led_deactivate(host);
mmiowb();
spin_unlock_irqrestore(&host->lock, flags);
mmc_request_done(host->mmc, mrq);
- sdhci_runtime_pm_put(host);
}
static void sdhci_timeout_timer(unsigned long data)
@@ -2679,7 +2667,7 @@ int sdhci_resume_host(struct sdhci_host *host)
sdhci_init(host, 0);
host->pwr = 0;
host->clock = 0;
- sdhci_do_set_ios(host, &host->mmc->ios);
+ sdhci_set_ios(host->mmc, &host->mmc->ios);
} else {
sdhci_init(host, (host->mmc->pm_flags & MMC_PM_KEEP_POWER));
mmiowb();
@@ -2703,33 +2691,6 @@ int sdhci_resume_host(struct sdhci_host *host)
EXPORT_SYMBOL_GPL(sdhci_resume_host);
-static int sdhci_runtime_pm_get(struct sdhci_host *host)
-{
- return pm_runtime_get_sync(host->mmc->parent);
-}
-
-static int sdhci_runtime_pm_put(struct sdhci_host *host)
-{
- pm_runtime_mark_last_busy(host->mmc->parent);
- return pm_runtime_put_autosuspend(host->mmc->parent);
-}
-
-static void sdhci_runtime_pm_bus_on(struct sdhci_host *host)
-{
- if (host->bus_on)
- return;
- host->bus_on = true;
- pm_runtime_get_noresume(host->mmc->parent);
-}
-
-static void sdhci_runtime_pm_bus_off(struct sdhci_host *host)
-{
- if (!host->bus_on)
- return;
- host->bus_on = false;
- pm_runtime_put_noidle(host->mmc->parent);
-}
-
int sdhci_runtime_suspend_host(struct sdhci_host *host)
{
unsigned long flags;
@@ -2768,8 +2729,8 @@ int sdhci_runtime_resume_host(struct sdhci_host *host)
/* Force clock and power re-program */
host->pwr = 0;
host->clock = 0;
- sdhci_do_start_signal_voltage_switch(host, &host->mmc->ios);
- sdhci_do_set_ios(host, &host->mmc->ios);
+ sdhci_start_signal_voltage_switch(host->mmc, &host->mmc->ios);
+ sdhci_set_ios(host->mmc, &host->mmc->ios);
if ((host_flags & SDHCI_PV_ENABLED) &&
!(host->quirks2 & SDHCI_QUIRK2_PRESET_VALUE_BROKEN)) {
@@ -3014,7 +2975,8 @@ int sdhci_add_host(struct sdhci_host *host)
if (!host->ops->get_max_clock) {
pr_err("%s: Hardware doesn't specify base clock frequency.\n",
mmc_hostname(mmc));
- return -ENODEV;
+ ret = -ENODEV;
+ goto undma;
}
host->max_clk = host->ops->get_max_clock(host);
}
@@ -3051,7 +3013,7 @@ int sdhci_add_host(struct sdhci_host *host)
} else
mmc->f_min = host->max_clk / SDHCI_MAX_DIV_SPEC_200;
- if (!mmc->f_max || (mmc->f_max && (mmc->f_max > max_clk)))
+ if (!mmc->f_max || mmc->f_max > max_clk)
mmc->f_max = max_clk;
if (!(host->quirks & SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK)) {
@@ -3064,7 +3026,8 @@ int sdhci_add_host(struct sdhci_host *host)
} else {
pr_err("%s: Hardware doesn't specify timeout clock frequency.\n",
mmc_hostname(mmc));
- return -ENODEV;
+ ret = -ENODEV;
+ goto undma;
}
}
@@ -3114,12 +3077,13 @@ int sdhci_add_host(struct sdhci_host *host)
if ((host->quirks & SDHCI_QUIRK_BROKEN_CARD_DETECTION) &&
!(mmc->caps & MMC_CAP_NONREMOVABLE) &&
- IS_ERR_VALUE(mmc_gpio_get_cd(host->mmc)))
+ mmc_gpio_get_cd(host->mmc) < 0)
mmc->caps |= MMC_CAP_NEEDS_POLL;
/* If there are external regulators, get them */
- if (mmc_regulator_get_supply(mmc) == -EPROBE_DEFER)
- return -EPROBE_DEFER;
+ ret = mmc_regulator_get_supply(mmc);
+ if (ret == -EPROBE_DEFER)
+ goto undma;
/* If vqmmc regulator and no 1.8V signalling, then there's no UHS */
if (!IS_ERR(mmc->supply.vqmmc)) {
@@ -3174,10 +3138,6 @@ int sdhci_add_host(struct sdhci_host *host)
if (caps[1] & SDHCI_USE_SDR50_TUNING)
host->flags |= SDHCI_SDR50_NEEDS_TUNING;
- /* Does the host need tuning for SDR104 / HS200? */
- if (mmc->caps2 & MMC_CAP2_HS200)
- host->flags |= SDHCI_SDR104_NEEDS_TUNING;
-
/* Driver Type(s) (A, C, D) supported by the host */
if (caps[1] & SDHCI_DRIVER_TYPE_A)
mmc->caps |= MMC_CAP_DRIVER_TYPE_A;
@@ -3276,7 +3236,8 @@ int sdhci_add_host(struct sdhci_host *host)
if (mmc->ocr_avail == 0) {
pr_err("%s: Hardware doesn't report any support voltages.\n",
mmc_hostname(mmc));
- return -ENODEV;
+ ret = -ENODEV;
+ goto unreg;
}
spin_lock_init(&host->lock);
@@ -3360,25 +3321,18 @@ int sdhci_add_host(struct sdhci_host *host)
sdhci_dumpregs(host);
#endif
-#ifdef SDHCI_USE_LEDS_CLASS
- snprintf(host->led_name, sizeof(host->led_name),
- "%s::", mmc_hostname(mmc));
- host->led.name = host->led_name;
- host->led.brightness = LED_OFF;
- host->led.default_trigger = mmc_hostname(mmc);
- host->led.brightness_set = sdhci_led_control;
-
- ret = led_classdev_register(mmc_dev(mmc), &host->led);
+ ret = sdhci_led_register(host);
if (ret) {
pr_err("%s: Failed to register LED device: %d\n",
mmc_hostname(mmc), ret);
- goto reset;
+ goto unirq;
}
-#endif
mmiowb();
- mmc_add_host(mmc);
+ ret = mmc_add_host(mmc);
+ if (ret)
+ goto unled;
pr_info("%s: SDHCI controller on %s [%s] using %s\n",
mmc_hostname(mmc), host->hw_name, dev_name(mmc_dev(mmc)),
@@ -3390,15 +3344,25 @@ int sdhci_add_host(struct sdhci_host *host)
return 0;
-#ifdef SDHCI_USE_LEDS_CLASS
-reset:
+unled:
+ sdhci_led_unregister(host);
+unirq:
sdhci_do_reset(host, SDHCI_RESET_ALL);
sdhci_writel(host, 0, SDHCI_INT_ENABLE);
sdhci_writel(host, 0, SDHCI_SIGNAL_ENABLE);
free_irq(host->irq, host);
-#endif
untasklet:
tasklet_kill(&host->finish_tasklet);
+unreg:
+ if (!IS_ERR(mmc->supply.vqmmc))
+ regulator_disable(mmc->supply.vqmmc);
+undma:
+ if (host->align_buffer)
+ dma_free_coherent(mmc_dev(mmc), host->align_buffer_sz +
+ host->adma_table_sz, host->align_buffer,
+ host->align_addr);
+ host->adma_table = NULL;
+ host->align_buffer = NULL;
return ret;
}
@@ -3430,9 +3394,7 @@ void sdhci_remove_host(struct sdhci_host *host, int dead)
mmc_remove_host(mmc);
-#ifdef SDHCI_USE_LEDS_CLASS
- led_classdev_unregister(&host->led);
-#endif
+ sdhci_led_unregister(host);
if (!dead)
sdhci_do_reset(host, SDHCI_RESET_ALL);
diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h
index 0f39f4f84..609f87ca5 100644
--- a/drivers/mmc/host/sdhci.h
+++ b/drivers/mmc/host/sdhci.h
@@ -417,11 +417,6 @@ struct sdhci_host {
#define SDHCI_QUIRK2_ACMD23_BROKEN (1<<14)
/* Broken Clock divider zero in controller */
#define SDHCI_QUIRK2_CLOCK_DIV_ZERO_BROKEN (1<<15)
-/*
- * When internal clock is disabled, a delay is needed before modifying the
- * SD clock frequency or enabling back the internal clock.
- */
-#define SDHCI_QUIRK2_NEED_DELAY_AFTER_INT_CLK_RST (1<<16)
int irq; /* Device IRQ */
void __iomem *ioaddr; /* Mapped address */
@@ -433,7 +428,7 @@ struct sdhci_host {
struct mmc_host_ops mmc_host_ops; /* MMC host ops */
u64 dma_mask; /* custom DMA mask */
-#if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE)
+#if IS_ENABLED(CONFIG_LEDS_CLASS)
struct led_classdev led; /* LED control */
char led_name[32];
#endif
@@ -450,7 +445,6 @@ struct sdhci_host {
#define SDHCI_AUTO_CMD23 (1<<7) /* Auto CMD23 support */
#define SDHCI_PV_ENABLED (1<<8) /* Preset value enabled */
#define SDHCI_SDIO_IRQ_ENABLED (1<<9) /* SDIO irq enabled */
-#define SDHCI_SDR104_NEEDS_TUNING (1<<10) /* SDR104/HS200 needs tuning */
#define SDHCI_USE_64_BIT_DMA (1<<12) /* Use 64-bit DMA */
#define SDHCI_HS400_TUNING (1<<13) /* Tuning for HS400 */
@@ -661,6 +655,8 @@ static inline bool sdhci_sdio_irq_enabled(struct sdhci_host *host)
return !!(host->flags & SDHCI_SDIO_IRQ_ENABLED);
}
+u16 sdhci_calc_clk(struct sdhci_host *host, unsigned int clock,
+ unsigned int *actual_clock);
void sdhci_set_clock(struct sdhci_host *host, unsigned int clock);
void sdhci_set_power(struct sdhci_host *host, unsigned char mode,
unsigned short vdd);
diff --git a/drivers/mmc/host/sh_mmcif.c b/drivers/mmc/host/sh_mmcif.c
index d9a655f47..dd64b8663 100644
--- a/drivers/mmc/host/sh_mmcif.c
+++ b/drivers/mmc/host/sh_mmcif.c
@@ -248,7 +248,6 @@ struct sh_mmcif_host {
int sg_idx;
int sg_blkidx;
bool power;
- bool card_present;
bool ccs_enable; /* Command Completion Signal support */
bool clk_ctrl2_enable;
struct mutex thread_lock;
@@ -1064,16 +1063,6 @@ static void sh_mmcif_clk_setup(struct sh_mmcif_host *host)
host->mmc->f_max, host->mmc->f_min);
}
-static void sh_mmcif_set_power(struct sh_mmcif_host *host, struct mmc_ios *ios)
-{
- struct mmc_host *mmc = host->mmc;
-
- if (!IS_ERR(mmc->supply.vmmc))
- /* Errors ignored... */
- mmc_regulator_set_ocr(mmc, mmc->supply.vmmc,
- ios->power_mode ? ios->vdd : 0);
-}
-
static void sh_mmcif_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
{
struct sh_mmcif_host *host = mmc_priv(mmc);
@@ -1091,42 +1080,32 @@ static void sh_mmcif_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
host->state = STATE_IOS;
spin_unlock_irqrestore(&host->lock, flags);
- if (ios->power_mode == MMC_POWER_UP) {
- if (!host->card_present) {
- /* See if we also get DMA */
+ switch (ios->power_mode) {
+ case MMC_POWER_UP:
+ if (!IS_ERR(mmc->supply.vmmc))
+ mmc_regulator_set_ocr(mmc, mmc->supply.vmmc, ios->vdd);
+ if (!host->power) {
+ clk_prepare_enable(host->clk);
+ pm_runtime_get_sync(dev);
+ sh_mmcif_sync_reset(host);
sh_mmcif_request_dma(host);
- host->card_present = true;
- }
- sh_mmcif_set_power(host, ios);
- } else if (ios->power_mode == MMC_POWER_OFF || !ios->clock) {
- /* clock stop */
- sh_mmcif_clock_control(host, 0);
- if (ios->power_mode == MMC_POWER_OFF) {
- if (host->card_present) {
- sh_mmcif_release_dma(host);
- host->card_present = false;
- }
+ host->power = true;
}
+ break;
+ case MMC_POWER_OFF:
+ if (!IS_ERR(mmc->supply.vmmc))
+ mmc_regulator_set_ocr(mmc, mmc->supply.vmmc, 0);
if (host->power) {
- pm_runtime_put_sync(dev);
+ sh_mmcif_clock_control(host, 0);
+ sh_mmcif_release_dma(host);
+ pm_runtime_put(dev);
clk_disable_unprepare(host->clk);
host->power = false;
- if (ios->power_mode == MMC_POWER_OFF)
- sh_mmcif_set_power(host, ios);
- }
- host->state = STATE_IDLE;
- return;
- }
-
- if (ios->clock) {
- if (!host->power) {
- clk_prepare_enable(host->clk);
-
- pm_runtime_get_sync(dev);
- host->power = true;
- sh_mmcif_sync_reset(host);
}
+ break;
+ case MMC_POWER_ON:
sh_mmcif_clock_control(host, ios->clock);
+ break;
}
host->timing = ios->timing;
@@ -1519,23 +1498,23 @@ static int sh_mmcif_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, host);
- pm_runtime_enable(dev);
- host->power = false;
-
host->clk = devm_clk_get(dev, NULL);
if (IS_ERR(host->clk)) {
ret = PTR_ERR(host->clk);
dev_err(dev, "cannot get clock: %d\n", ret);
- goto err_pm;
+ goto err_host;
}
ret = clk_prepare_enable(host->clk);
if (ret < 0)
- goto err_pm;
+ goto err_host;
sh_mmcif_clk_setup(host);
- ret = pm_runtime_resume(dev);
+ pm_runtime_enable(dev);
+ host->power = false;
+
+ ret = pm_runtime_get_sync(dev);
if (ret < 0)
goto err_clk;
@@ -1579,12 +1558,13 @@ static int sh_mmcif_probe(struct platform_device *pdev)
sh_mmcif_readl(host->addr, MMCIF_CE_VERSION) & 0xffff,
clk_get_rate(host->clk) / 1000000UL);
+ pm_runtime_put(dev);
clk_disable_unprepare(host->clk);
return ret;
err_clk:
clk_disable_unprepare(host->clk);
-err_pm:
+ pm_runtime_put_sync(dev);
pm_runtime_disable(dev);
err_host:
mmc_free_host(mmc);
diff --git a/drivers/mmc/host/sh_mobile_sdhi.c b/drivers/mmc/host/sh_mobile_sdhi.c
index 9aa147959..f750f9494 100644
--- a/drivers/mmc/host/sh_mobile_sdhi.c
+++ b/drivers/mmc/host/sh_mobile_sdhi.c
@@ -28,10 +28,12 @@
#include <linux/of_device.h>
#include <linux/platform_device.h>
#include <linux/mmc/host.h>
-#include <linux/mmc/sh_mobile_sdhi.h>
#include <linux/mfd/tmio.h>
#include <linux/sh_dma.h>
#include <linux/delay.h>
+#include <linux/pinctrl/consumer.h>
+#include <linux/pinctrl/pinctrl-state.h>
+#include <linux/regulator/consumer.h>
#include "tmio_mmc.h"
@@ -48,10 +50,8 @@ struct sh_mobile_sdhi_of_data {
unsigned bus_shift;
};
-static const struct sh_mobile_sdhi_of_data sh_mobile_sdhi_of_cfg[] = {
- {
- .tmio_flags = TMIO_MMC_HAS_IDLE_WAIT,
- },
+static const struct sh_mobile_sdhi_of_data of_default_cfg = {
+ .tmio_flags = TMIO_MMC_HAS_IDLE_WAIT,
};
static const struct sh_mobile_sdhi_of_data of_rcar_gen1_compatible = {
@@ -62,7 +62,7 @@ static const struct sh_mobile_sdhi_of_data of_rcar_gen1_compatible = {
static const struct sh_mobile_sdhi_of_data of_rcar_gen2_compatible = {
.tmio_flags = TMIO_MMC_HAS_IDLE_WAIT | TMIO_MMC_WRPROTECT_DISABLE |
- TMIO_MMC_CLK_ACTUAL | TMIO_MMC_FAST_CLK_CHG,
+ TMIO_MMC_CLK_ACTUAL | TMIO_MMC_MIN_RCAR2,
.capabilities = MMC_CAP_SD_HIGHSPEED | MMC_CAP_SDIO_IRQ,
.dma_buswidth = DMA_SLAVE_BUSWIDTH_4_BYTES,
.dma_rx_offset = 0x2000,
@@ -70,17 +70,16 @@ static const struct sh_mobile_sdhi_of_data of_rcar_gen2_compatible = {
static const struct sh_mobile_sdhi_of_data of_rcar_gen3_compatible = {
.tmio_flags = TMIO_MMC_HAS_IDLE_WAIT | TMIO_MMC_WRPROTECT_DISABLE |
- TMIO_MMC_CLK_ACTUAL | TMIO_MMC_FAST_CLK_CHG,
- .capabilities = MMC_CAP_SD_HIGHSPEED,
+ TMIO_MMC_CLK_ACTUAL | TMIO_MMC_MIN_RCAR2,
+ .capabilities = MMC_CAP_SD_HIGHSPEED | MMC_CAP_SDIO_IRQ,
.bus_shift = 2,
};
static const struct of_device_id sh_mobile_sdhi_of_match[] = {
{ .compatible = "renesas,sdhi-shmobile" },
- { .compatible = "renesas,sdhi-sh7372" },
- { .compatible = "renesas,sdhi-sh73a0", .data = &sh_mobile_sdhi_of_cfg[0], },
- { .compatible = "renesas,sdhi-r8a73a4", .data = &sh_mobile_sdhi_of_cfg[0], },
- { .compatible = "renesas,sdhi-r8a7740", .data = &sh_mobile_sdhi_of_cfg[0], },
+ { .compatible = "renesas,sdhi-sh73a0", .data = &of_default_cfg, },
+ { .compatible = "renesas,sdhi-r8a73a4", .data = &of_default_cfg, },
+ { .compatible = "renesas,sdhi-r8a7740", .data = &of_default_cfg, },
{ .compatible = "renesas,sdhi-r8a7778", .data = &of_rcar_gen1_compatible, },
{ .compatible = "renesas,sdhi-r8a7779", .data = &of_rcar_gen1_compatible, },
{ .compatible = "renesas,sdhi-r8a7790", .data = &of_rcar_gen2_compatible, },
@@ -97,6 +96,8 @@ struct sh_mobile_sdhi {
struct clk *clk;
struct tmio_mmc_data mmc_data;
struct tmio_mmc_dma dma_priv;
+ struct pinctrl *pinctrl;
+ struct pinctrl_state *pins_default, *pins_uhs;
};
static void sh_mobile_sdhi_sdbuf_width(struct tmio_mmc_host *host, int width)
@@ -131,16 +132,28 @@ static void sh_mobile_sdhi_sdbuf_width(struct tmio_mmc_host *host, int width)
sd_ctrl_write16(host, EXT_ACC, val);
}
-static int sh_mobile_sdhi_clk_enable(struct platform_device *pdev, unsigned int *f)
+static int sh_mobile_sdhi_clk_enable(struct tmio_mmc_host *host)
{
- struct mmc_host *mmc = platform_get_drvdata(pdev);
- struct tmio_mmc_host *host = mmc_priv(mmc);
+ struct mmc_host *mmc = host->mmc;
struct sh_mobile_sdhi *priv = host_to_priv(host);
int ret = clk_prepare_enable(priv->clk);
if (ret < 0)
return ret;
- *f = clk_get_rate(priv->clk);
+ /*
+ * The clock driver may not know what maximum frequency
+ * actually works, so it should be set with the max-frequency
+ * property which will already have been read to f_max. If it
+ * was missing, assume the current frequency is the maximum.
+ */
+ if (!mmc->f_max)
+ mmc->f_max = clk_get_rate(priv->clk);
+
+ /*
+ * Minimum frequency is the minimum input clock frequency
+ * divided by our maximum divider.
+ */
+ mmc->f_min = max(clk_round_rate(priv->clk, 1) / 512, 1L);
/* enable 16bit data access on SDBUF as default */
sh_mobile_sdhi_sdbuf_width(host, 16);
@@ -148,19 +161,92 @@ static int sh_mobile_sdhi_clk_enable(struct platform_device *pdev, unsigned int
return 0;
}
-static void sh_mobile_sdhi_clk_disable(struct platform_device *pdev)
+static unsigned int sh_mobile_sdhi_clk_update(struct tmio_mmc_host *host,
+ unsigned int new_clock)
+{
+ struct sh_mobile_sdhi *priv = host_to_priv(host);
+ unsigned int freq, diff, best_freq = 0, diff_min = ~0;
+ int i, ret;
+
+ /* tested only on RCar Gen2+ currently; may work for others */
+ if (!(host->pdata->flags & TMIO_MMC_MIN_RCAR2))
+ return clk_get_rate(priv->clk);
+
+ /*
+ * We want the bus clock to be as close as possible to, but no
+ * greater than, new_clock. As we can divide by 1 << i for
+ * any i in [0, 9] we want the input clock to be as close as
+ * possible, but no greater than, new_clock << i.
+ */
+ for (i = min(9, ilog2(UINT_MAX / new_clock)); i >= 0; i--) {
+ freq = clk_round_rate(priv->clk, new_clock << i);
+ if (freq > (new_clock << i)) {
+ /* Too fast; look for a slightly slower option */
+ freq = clk_round_rate(priv->clk,
+ (new_clock << i) / 4 * 3);
+ if (freq > (new_clock << i))
+ continue;
+ }
+
+ diff = new_clock - (freq >> i);
+ if (diff <= diff_min) {
+ best_freq = freq;
+ diff_min = diff;
+ }
+ }
+
+ ret = clk_set_rate(priv->clk, best_freq);
+
+ return ret == 0 ? best_freq : clk_get_rate(priv->clk);
+}
+
+static void sh_mobile_sdhi_clk_disable(struct tmio_mmc_host *host)
{
- struct mmc_host *mmc = platform_get_drvdata(pdev);
- struct tmio_mmc_host *host = mmc_priv(mmc);
struct sh_mobile_sdhi *priv = host_to_priv(host);
+
clk_disable_unprepare(priv->clk);
}
+static int sh_mobile_sdhi_start_signal_voltage_switch(struct mmc_host *mmc,
+ struct mmc_ios *ios)
+{
+ struct tmio_mmc_host *host = mmc_priv(mmc);
+ struct sh_mobile_sdhi *priv = host_to_priv(host);
+ struct pinctrl_state *pin_state;
+ int ret;
+
+ switch (ios->signal_voltage) {
+ case MMC_SIGNAL_VOLTAGE_330:
+ pin_state = priv->pins_default;
+ break;
+ case MMC_SIGNAL_VOLTAGE_180:
+ pin_state = priv->pins_uhs;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ /*
+ * If anything is missing, assume signal voltage is fixed at
+ * 3.3V and succeed/fail accordingly.
+ */
+ if (IS_ERR(priv->pinctrl) || IS_ERR(pin_state))
+ return ios->signal_voltage ==
+ MMC_SIGNAL_VOLTAGE_330 ? 0 : -EINVAL;
+
+ ret = mmc_regulator_set_vqmmc(host->mmc, ios);
+ if (ret)
+ return ret;
+
+ return pinctrl_select_state(priv->pinctrl, pin_state);
+}
+
static int sh_mobile_sdhi_wait_idle(struct tmio_mmc_host *host)
{
int timeout = 1000;
- while (--timeout && !(sd_ctrl_read16(host, CTL_STATUS2) & (1 << 13)))
+ while (--timeout && !(sd_ctrl_read16_and_16_as_32(host, CTL_STATUS)
+ & TMIO_STAT_SCLKDIVEN))
udelay(1);
if (!timeout) {
@@ -226,7 +312,6 @@ static int sh_mobile_sdhi_probe(struct platform_device *pdev)
struct tmio_mmc_host *host;
struct resource *res;
int irq, ret, i = 0;
- bool multiplexed_isr = true;
struct tmio_mmc_dma *dma_priv;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
@@ -247,6 +332,14 @@ static int sh_mobile_sdhi_probe(struct platform_device *pdev)
goto eprobe;
}
+ priv->pinctrl = devm_pinctrl_get(&pdev->dev);
+ if (!IS_ERR(priv->pinctrl)) {
+ priv->pins_default = pinctrl_lookup_state(priv->pinctrl,
+ PINCTRL_STATE_DEFAULT);
+ priv->pins_uhs = pinctrl_lookup_state(priv->pinctrl,
+ "state_uhs");
+ }
+
host = tmio_mmc_host_alloc(pdev);
if (!host) {
ret = -ENOMEM;
@@ -267,8 +360,10 @@ static int sh_mobile_sdhi_probe(struct platform_device *pdev)
host->dma = dma_priv;
host->write16_hook = sh_mobile_sdhi_write16_hook;
host->clk_enable = sh_mobile_sdhi_clk_enable;
+ host->clk_update = sh_mobile_sdhi_clk_update;
host->clk_disable = sh_mobile_sdhi_clk_disable;
host->multi_io_quirk = sh_mobile_sdhi_multi_io_quirk;
+ host->start_signal_voltage_switch = sh_mobile_sdhi_start_signal_voltage_switch;
/* Orginally registers were 16 bit apart, could be 32 or 64 nowadays */
if (!host->bus_shift && resource_size(res) > 0x100) /* old way to determine the shift */
@@ -308,63 +403,24 @@ static int sh_mobile_sdhi_probe(struct platform_device *pdev)
if (ret < 0)
goto efree;
- /*
- * Allow one or more specific (named) ISRs or
- * one or more multiplexed (un-named) ISRs.
- */
-
- irq = platform_get_irq_byname(pdev, SH_MOBILE_SDHI_IRQ_CARD_DETECT);
- if (irq >= 0) {
- multiplexed_isr = false;
- ret = devm_request_irq(&pdev->dev, irq, tmio_mmc_card_detect_irq, 0,
- dev_name(&pdev->dev), host);
- if (ret)
- goto eirq;
- }
-
- irq = platform_get_irq_byname(pdev, SH_MOBILE_SDHI_IRQ_SDIO);
- if (irq >= 0) {
- multiplexed_isr = false;
- ret = devm_request_irq(&pdev->dev, irq, tmio_mmc_sdio_irq, 0,
+ while (1) {
+ irq = platform_get_irq(pdev, i);
+ if (irq < 0)
+ break;
+ i++;
+ ret = devm_request_irq(&pdev->dev, irq, tmio_mmc_irq, 0,
dev_name(&pdev->dev), host);
if (ret)
goto eirq;
}
- irq = platform_get_irq_byname(pdev, SH_MOBILE_SDHI_IRQ_SDCARD);
- if (irq >= 0) {
- multiplexed_isr = false;
- ret = devm_request_irq(&pdev->dev, irq, tmio_mmc_sdcard_irq, 0,
- dev_name(&pdev->dev), host);
- if (ret)
- goto eirq;
- } else if (!multiplexed_isr) {
- dev_err(&pdev->dev,
- "Principal SD-card IRQ is missing among named interrupts\n");
+ /* There must be at least one IRQ source */
+ if (!i) {
ret = irq;
goto eirq;
}
- if (multiplexed_isr) {
- while (1) {
- irq = platform_get_irq(pdev, i);
- if (irq < 0)
- break;
- i++;
- ret = devm_request_irq(&pdev->dev, irq, tmio_mmc_irq, 0,
- dev_name(&pdev->dev), host);
- if (ret)
- goto eirq;
- }
-
- /* There must be at least one IRQ source */
- if (!i) {
- ret = irq;
- goto eirq;
- }
- }
-
- dev_info(&pdev->dev, "%s base at 0x%08lx clock rate %u MHz\n",
+ dev_info(&pdev->dev, "%s base at 0x%08lx max clock rate %u MHz\n",
mmc_hostname(host->mmc), (unsigned long)
(platform_get_resource(pdev, IORESOURCE_MEM, 0)->start),
host->mmc->f_max / 1000000);
diff --git a/drivers/mmc/host/sunxi-mmc.c b/drivers/mmc/host/sunxi-mmc.c
index 7fc8b7aa8..2ee4c21ec 100644
--- a/drivers/mmc/host/sunxi-mmc.c
+++ b/drivers/mmc/host/sunxi-mmc.c
@@ -970,8 +970,8 @@ static const struct sunxi_mmc_clk_delay sun9i_mmc_clk_delays[] = {
[SDXC_CLK_400K] = { .output = 180, .sample = 180 },
[SDXC_CLK_25M] = { .output = 180, .sample = 75 },
[SDXC_CLK_50M] = { .output = 150, .sample = 120 },
- [SDXC_CLK_50M_DDR] = { .output = 90, .sample = 120 },
- [SDXC_CLK_50M_DDR_8BIT] = { .output = 90, .sample = 120 },
+ [SDXC_CLK_50M_DDR] = { .output = 54, .sample = 36 },
+ [SDXC_CLK_50M_DDR_8BIT] = { .output = 72, .sample = 72 },
};
static int sunxi_mmc_resource_request(struct sunxi_mmc_host *host,
@@ -1129,11 +1129,6 @@ static int sunxi_mmc_probe(struct platform_device *pdev)
MMC_CAP_1_8V_DDR |
MMC_CAP_ERASE | MMC_CAP_SDIO_IRQ;
- /* TODO MMC DDR is not working on A80 */
- if (of_device_is_compatible(pdev->dev.of_node,
- "allwinner,sun9i-a80-mmc"))
- mmc->caps &= ~MMC_CAP_1_8V_DDR;
-
ret = mmc_of_parse(mmc);
if (ret)
goto error_free_dma;
diff --git a/drivers/mmc/host/tmio_mmc.h b/drivers/mmc/host/tmio_mmc.h
index 4a597f5a5..1aac2ad8e 100644
--- a/drivers/mmc/host/tmio_mmc.h
+++ b/drivers/mmc/host/tmio_mmc.h
@@ -1,6 +1,8 @@
/*
* linux/drivers/mmc/host/tmio_mmc.h
*
+ * Copyright (C) 2016 Sang Engineering, Wolfram Sang
+ * Copyright (C) 2015-16 Renesas Electronics Corporation
* Copyright (C) 2007 Ian Molton
* Copyright (C) 2004 Ian Molton
*
@@ -18,12 +20,67 @@
#include <linux/dmaengine.h>
#include <linux/highmem.h>
-#include <linux/mmc/tmio.h>
#include <linux/mutex.h>
#include <linux/pagemap.h>
#include <linux/scatterlist.h>
#include <linux/spinlock.h>
+#define CTL_SD_CMD 0x00
+#define CTL_ARG_REG 0x04
+#define CTL_STOP_INTERNAL_ACTION 0x08
+#define CTL_XFER_BLK_COUNT 0xa
+#define CTL_RESPONSE 0x0c
+/* driver merges STATUS and following STATUS2 */
+#define CTL_STATUS 0x1c
+/* driver merges IRQ_MASK and following IRQ_MASK2 */
+#define CTL_IRQ_MASK 0x20
+#define CTL_SD_CARD_CLK_CTL 0x24
+#define CTL_SD_XFER_LEN 0x26
+#define CTL_SD_MEM_CARD_OPT 0x28
+#define CTL_SD_ERROR_DETAIL_STATUS 0x2c
+#define CTL_SD_DATA_PORT 0x30
+#define CTL_TRANSACTION_CTL 0x34
+#define CTL_SDIO_STATUS 0x36
+#define CTL_SDIO_IRQ_MASK 0x38
+#define CTL_DMA_ENABLE 0xd8
+#define CTL_RESET_SD 0xe0
+#define CTL_VERSION 0xe2
+#define CTL_SDIO_REGS 0x100
+#define CTL_CLK_AND_WAIT_CTL 0x138
+#define CTL_RESET_SDIO 0x1e0
+
+/* Definitions for values the CTRL_STATUS register can take. */
+#define TMIO_STAT_CMDRESPEND BIT(0)
+#define TMIO_STAT_DATAEND BIT(2)
+#define TMIO_STAT_CARD_REMOVE BIT(3)
+#define TMIO_STAT_CARD_INSERT BIT(4)
+#define TMIO_STAT_SIGSTATE BIT(5)
+#define TMIO_STAT_WRPROTECT BIT(7)
+#define TMIO_STAT_CARD_REMOVE_A BIT(8)
+#define TMIO_STAT_CARD_INSERT_A BIT(9)
+#define TMIO_STAT_SIGSTATE_A BIT(10)
+
+/* These belong technically to CTRL_STATUS2, but the driver merges them */
+#define TMIO_STAT_CMD_IDX_ERR BIT(16)
+#define TMIO_STAT_CRCFAIL BIT(17)
+#define TMIO_STAT_STOPBIT_ERR BIT(18)
+#define TMIO_STAT_DATATIMEOUT BIT(19)
+#define TMIO_STAT_RXOVERFLOW BIT(20)
+#define TMIO_STAT_TXUNDERRUN BIT(21)
+#define TMIO_STAT_CMDTIMEOUT BIT(22)
+#define TMIO_STAT_DAT0 BIT(23) /* only known on R-Car so far */
+#define TMIO_STAT_RXRDY BIT(24)
+#define TMIO_STAT_TXRQ BIT(25)
+#define TMIO_STAT_ILL_FUNC BIT(29) /* only when !TMIO_MMC_HAS_IDLE_WAIT */
+#define TMIO_STAT_SCLKDIVEN BIT(29) /* only when TMIO_MMC_HAS_IDLE_WAIT */
+#define TMIO_STAT_CMD_BUSY BIT(30)
+#define TMIO_STAT_ILL_ACCESS BIT(31)
+
+#define CLK_CTL_DIV_MASK 0xff
+#define CLK_CTL_SCLKEN BIT(8)
+
+#define TMIO_BBS 512 /* Boot block size */
+
/* Definitions for values the CTRL_SDIO_STATUS register can take. */
#define TMIO_SDIO_STAT_IOIRQ 0x0001
#define TMIO_SDIO_STAT_EXPUB52 0x4000
@@ -95,10 +152,14 @@ struct tmio_mmc_host {
bool sdio_irq_enabled;
int (*write16_hook)(struct tmio_mmc_host *host, int addr);
- int (*clk_enable)(struct platform_device *pdev, unsigned int *f);
- void (*clk_disable)(struct platform_device *pdev);
+ int (*clk_enable)(struct tmio_mmc_host *host);
+ unsigned int (*clk_update)(struct tmio_mmc_host *host,
+ unsigned int new_clock);
+ void (*clk_disable)(struct tmio_mmc_host *host);
int (*multi_io_quirk)(struct mmc_card *card,
unsigned int direction, int blk_size);
+ int (*start_signal_voltage_switch)(struct mmc_host *mmc,
+ struct mmc_ios *ios);
};
struct tmio_mmc_host *tmio_mmc_host_alloc(struct platform_device *pdev);
@@ -111,9 +172,6 @@ void tmio_mmc_do_data_irq(struct tmio_mmc_host *host);
void tmio_mmc_enable_mmc_irqs(struct tmio_mmc_host *host, u32 i);
void tmio_mmc_disable_mmc_irqs(struct tmio_mmc_host *host, u32 i);
irqreturn_t tmio_mmc_irq(int irq, void *devid);
-irqreturn_t tmio_mmc_sdcard_irq(int irq, void *devid);
-irqreturn_t tmio_mmc_card_detect_irq(int irq, void *devid);
-irqreturn_t tmio_mmc_sdio_irq(int irq, void *devid);
static inline char *tmio_mmc_kmap_atomic(struct scatterlist *sg,
unsigned long *flags)
@@ -177,7 +235,7 @@ static inline void sd_ctrl_read16_rep(struct tmio_mmc_host *host, int addr,
readsw(host->ctl + (addr << host->bus_shift), buf, count);
}
-static inline u32 sd_ctrl_read32(struct tmio_mmc_host *host, int addr)
+static inline u32 sd_ctrl_read16_and_16_as_32(struct tmio_mmc_host *host, int addr)
{
return readw(host->ctl + (addr << host->bus_shift)) |
readw(host->ctl + ((addr + 2) << host->bus_shift)) << 16;
@@ -199,11 +257,10 @@ static inline void sd_ctrl_write16_rep(struct tmio_mmc_host *host, int addr,
writesw(host->ctl + (addr << host->bus_shift), buf, count);
}
-static inline void sd_ctrl_write32(struct tmio_mmc_host *host, int addr, u32 val)
+static inline void sd_ctrl_write32_as_16_and_16(struct tmio_mmc_host *host, int addr, u32 val)
{
writew(val, host->ctl + (addr << host->bus_shift));
writew(val >> 16, host->ctl + ((addr + 2) << host->bus_shift));
}
-
#endif
diff --git a/drivers/mmc/host/tmio_mmc_dma.c b/drivers/mmc/host/tmio_mmc_dma.c
index 7fb0c034d..fa8a936a3 100644
--- a/drivers/mmc/host/tmio_mmc_dma.c
+++ b/drivers/mmc/host/tmio_mmc_dma.c
@@ -15,7 +15,6 @@
#include <linux/dmaengine.h>
#include <linux/mfd/tmio.h>
#include <linux/mmc/host.h>
-#include <linux/mmc/tmio.h>
#include <linux/pagemap.h>
#include <linux/scatterlist.h>
diff --git a/drivers/mmc/host/tmio_mmc_pio.c b/drivers/mmc/host/tmio_mmc_pio.c
index 0521b4662..f44e2ab7a 100644
--- a/drivers/mmc/host/tmio_mmc_pio.c
+++ b/drivers/mmc/host/tmio_mmc_pio.c
@@ -39,7 +39,6 @@
#include <linux/mmc/host.h>
#include <linux/mmc/mmc.h>
#include <linux/mmc/slot-gpio.h>
-#include <linux/mmc/tmio.h>
#include <linux/module.h>
#include <linux/pagemap.h>
#include <linux/platform_device.h>
@@ -56,18 +55,18 @@
void tmio_mmc_enable_mmc_irqs(struct tmio_mmc_host *host, u32 i)
{
host->sdcard_irq_mask &= ~(i & TMIO_MASK_IRQ);
- sd_ctrl_write32(host, CTL_IRQ_MASK, host->sdcard_irq_mask);
+ sd_ctrl_write32_as_16_and_16(host, CTL_IRQ_MASK, host->sdcard_irq_mask);
}
void tmio_mmc_disable_mmc_irqs(struct tmio_mmc_host *host, u32 i)
{
host->sdcard_irq_mask |= (i & TMIO_MASK_IRQ);
- sd_ctrl_write32(host, CTL_IRQ_MASK, host->sdcard_irq_mask);
+ sd_ctrl_write32_as_16_and_16(host, CTL_IRQ_MASK, host->sdcard_irq_mask);
}
static void tmio_mmc_ack_mmc_irqs(struct tmio_mmc_host *host, u32 i)
{
- sd_ctrl_write32(host, CTL_STATUS, ~i);
+ sd_ctrl_write32_as_16_and_16(host, CTL_STATUS, ~i);
}
static void tmio_mmc_init_sg(struct tmio_mmc_host *host, struct mmc_data *data)
@@ -154,31 +153,16 @@ static void tmio_mmc_enable_sdio_irq(struct mmc_host *mmc, int enable)
}
}
-static void tmio_mmc_set_clock(struct tmio_mmc_host *host,
- unsigned int new_clock)
+static void tmio_mmc_clk_start(struct tmio_mmc_host *host)
{
- u32 clk = 0, clock;
-
- if (new_clock) {
- for (clock = host->mmc->f_min, clk = 0x80000080;
- new_clock >= (clock << 1);
- clk >>= 1)
- clock <<= 1;
-
- /* 1/1 clock is option */
- if ((host->pdata->flags & TMIO_MMC_CLK_ACTUAL) &&
- ((clk >> 22) & 0x1))
- clk |= 0xff;
- }
-
- if (host->set_clk_div)
- host->set_clk_div(host->pdev, (clk >> 22) & 1);
+ sd_ctrl_write16(host, CTL_SD_CARD_CLK_CTL, CLK_CTL_SCLKEN |
+ sd_ctrl_read16(host, CTL_SD_CARD_CLK_CTL));
+ msleep(host->pdata->flags & TMIO_MMC_MIN_RCAR2 ? 1 : 10);
- sd_ctrl_write16(host, CTL_SD_CARD_CLK_CTL, ~CLK_CTL_SCLKEN &
- sd_ctrl_read16(host, CTL_SD_CARD_CLK_CTL));
- sd_ctrl_write16(host, CTL_SD_CARD_CLK_CTL, clk & CLK_CTL_DIV_MASK);
- if (!(host->pdata->flags & TMIO_MMC_FAST_CLK_CHG))
+ if (host->pdata->flags & TMIO_MMC_HAVE_HIGH_REG) {
+ sd_ctrl_write16(host, CTL_CLK_AND_WAIT_CTL, 0x0100);
msleep(10);
+ }
}
static void tmio_mmc_clk_stop(struct tmio_mmc_host *host)
@@ -190,19 +174,41 @@ static void tmio_mmc_clk_stop(struct tmio_mmc_host *host)
sd_ctrl_write16(host, CTL_SD_CARD_CLK_CTL, ~CLK_CTL_SCLKEN &
sd_ctrl_read16(host, CTL_SD_CARD_CLK_CTL));
- msleep(host->pdata->flags & TMIO_MMC_FAST_CLK_CHG ? 5 : 10);
+ msleep(host->pdata->flags & TMIO_MMC_MIN_RCAR2 ? 5 : 10);
}
-static void tmio_mmc_clk_start(struct tmio_mmc_host *host)
+static void tmio_mmc_set_clock(struct tmio_mmc_host *host,
+ unsigned int new_clock)
{
- sd_ctrl_write16(host, CTL_SD_CARD_CLK_CTL, CLK_CTL_SCLKEN |
- sd_ctrl_read16(host, CTL_SD_CARD_CLK_CTL));
- msleep(host->pdata->flags & TMIO_MMC_FAST_CLK_CHG ? 1 : 10);
+ u32 clk = 0, clock;
- if (host->pdata->flags & TMIO_MMC_HAVE_HIGH_REG) {
- sd_ctrl_write16(host, CTL_CLK_AND_WAIT_CTL, 0x0100);
- msleep(10);
+ if (new_clock == 0) {
+ tmio_mmc_clk_stop(host);
+ return;
}
+
+ if (host->clk_update)
+ clock = host->clk_update(host, new_clock) / 512;
+ else
+ clock = host->mmc->f_min;
+
+ for (clk = 0x80000080; new_clock >= (clock << 1); clk >>= 1)
+ clock <<= 1;
+
+ /* 1/1 clock is option */
+ if ((host->pdata->flags & TMIO_MMC_CLK_ACTUAL) && ((clk >> 22) & 0x1))
+ clk |= 0xff;
+
+ if (host->set_clk_div)
+ host->set_clk_div(host->pdev, (clk >> 22) & 1);
+
+ sd_ctrl_write16(host, CTL_SD_CARD_CLK_CTL, ~CLK_CTL_SCLKEN &
+ sd_ctrl_read16(host, CTL_SD_CARD_CLK_CTL));
+ sd_ctrl_write16(host, CTL_SD_CARD_CLK_CTL, clk & CLK_CTL_DIV_MASK);
+ if (!(host->pdata->flags & TMIO_MMC_MIN_RCAR2))
+ msleep(10);
+
+ tmio_mmc_clk_start(host);
}
static void tmio_mmc_reset(struct tmio_mmc_host *host)
@@ -264,9 +270,6 @@ static void tmio_mmc_reset_work(struct work_struct *work)
tmio_mmc_abort_dma(host);
mmc_request_done(host->mmc, mrq);
-
- pm_runtime_mark_last_busy(mmc_dev(host->mmc));
- pm_runtime_put_autosuspend(mmc_dev(host->mmc));
}
/* called with host->lock held, interrupts disabled */
@@ -296,9 +299,6 @@ static void tmio_mmc_finish_request(struct tmio_mmc_host *host)
tmio_mmc_abort_dma(host);
mmc_request_done(host->mmc, mrq);
-
- pm_runtime_mark_last_busy(mmc_dev(host->mmc));
- pm_runtime_put_autosuspend(mmc_dev(host->mmc));
}
static void tmio_mmc_done_work(struct work_struct *work)
@@ -375,7 +375,7 @@ static int tmio_mmc_start_command(struct tmio_mmc_host *host, struct mmc_command
tmio_mmc_enable_mmc_irqs(host, irq_mask);
/* Fire off the command */
- sd_ctrl_write32(host, CTL_ARG_REG, cmd->arg);
+ sd_ctrl_write32_as_16_and_16(host, CTL_ARG_REG, cmd->arg);
sd_ctrl_write16(host, CTL_SD_CMD, c);
return 0;
@@ -530,7 +530,7 @@ static void tmio_mmc_data_irq(struct tmio_mmc_host *host)
goto out;
if (host->chan_tx && (data->flags & MMC_DATA_WRITE) && !host->force_pio) {
- u32 status = sd_ctrl_read32(host, CTL_STATUS);
+ u32 status = sd_ctrl_read16_and_16_as_32(host, CTL_STATUS);
bool done = false;
/*
@@ -542,7 +542,7 @@ static void tmio_mmc_data_irq(struct tmio_mmc_host *host)
* waiting for one more interrupt fixes the problem.
*/
if (host->pdata->flags & TMIO_MMC_HAS_IDLE_WAIT) {
- if (status & TMIO_STAT_ILL_FUNC)
+ if (status & TMIO_STAT_SCLKDIVEN)
done = true;
} else {
if (!(status & TMIO_STAT_CMD_BUSY))
@@ -585,7 +585,7 @@ static void tmio_mmc_cmd_irq(struct tmio_mmc_host *host,
*/
for (i = 3, addr = CTL_RESPONSE ; i >= 0 ; i--, addr += 4)
- cmd->resp[i] = sd_ctrl_read32(host, addr);
+ cmd->resp[i] = sd_ctrl_read16_and_16_as_32(host, addr);
if (cmd->flags & MMC_RSP_136) {
cmd->resp[0] = (cmd->resp[0] << 8) | (cmd->resp[1] >> 24);
@@ -625,19 +625,6 @@ out:
spin_unlock(&host->lock);
}
-static void tmio_mmc_card_irq_status(struct tmio_mmc_host *host,
- int *ireg, int *status)
-{
- *status = sd_ctrl_read32(host, CTL_STATUS);
- *ireg = *status & TMIO_MASK_IRQ & ~host->sdcard_irq_mask;
-
- pr_debug_status(*status);
- pr_debug_status(*ireg);
-
- /* Clear the status except the interrupt status */
- sd_ctrl_write32(host, CTL_STATUS, TMIO_MASK_IRQ);
-}
-
static bool __tmio_mmc_card_detect_irq(struct tmio_mmc_host *host,
int ireg, int status)
{
@@ -657,18 +644,6 @@ static bool __tmio_mmc_card_detect_irq(struct tmio_mmc_host *host,
return false;
}
-irqreturn_t tmio_mmc_card_detect_irq(int irq, void *devid)
-{
- unsigned int ireg, status;
- struct tmio_mmc_host *host = devid;
-
- tmio_mmc_card_irq_status(host, &ireg, &status);
- __tmio_mmc_card_detect_irq(host, ireg, status);
-
- return IRQ_HANDLED;
-}
-EXPORT_SYMBOL(tmio_mmc_card_detect_irq);
-
static bool __tmio_mmc_sdcard_irq(struct tmio_mmc_host *host,
int ireg, int status)
{
@@ -698,19 +673,7 @@ static bool __tmio_mmc_sdcard_irq(struct tmio_mmc_host *host,
return false;
}
-irqreturn_t tmio_mmc_sdcard_irq(int irq, void *devid)
-{
- unsigned int ireg, status;
- struct tmio_mmc_host *host = devid;
-
- tmio_mmc_card_irq_status(host, &ireg, &status);
- __tmio_mmc_sdcard_irq(host, ireg, status);
-
- return IRQ_HANDLED;
-}
-EXPORT_SYMBOL(tmio_mmc_sdcard_irq);
-
-irqreturn_t tmio_mmc_sdio_irq(int irq, void *devid)
+static void tmio_mmc_sdio_irq(int irq, void *devid)
{
struct tmio_mmc_host *host = devid;
struct mmc_host *mmc = host->mmc;
@@ -719,7 +682,7 @@ irqreturn_t tmio_mmc_sdio_irq(int irq, void *devid)
unsigned int sdio_status;
if (!(pdata->flags & TMIO_MMC_SDIO_IRQ))
- return IRQ_HANDLED;
+ return;
status = sd_ctrl_read16(host, CTL_SDIO_STATUS);
ireg = status & TMIO_SDIO_MASK_ALL & ~host->sdcard_irq_mask;
@@ -732,19 +695,22 @@ irqreturn_t tmio_mmc_sdio_irq(int irq, void *devid)
if (mmc->caps & MMC_CAP_SDIO_IRQ && ireg & TMIO_SDIO_STAT_IOIRQ)
mmc_signal_sdio_irq(mmc);
-
- return IRQ_HANDLED;
}
-EXPORT_SYMBOL(tmio_mmc_sdio_irq);
irqreturn_t tmio_mmc_irq(int irq, void *devid)
{
struct tmio_mmc_host *host = devid;
unsigned int ireg, status;
- pr_debug("MMC IRQ begin\n");
+ status = sd_ctrl_read16_and_16_as_32(host, CTL_STATUS);
+ ireg = status & TMIO_MASK_IRQ & ~host->sdcard_irq_mask;
+
+ pr_debug_status(status);
+ pr_debug_status(ireg);
+
+ /* Clear the status except the interrupt status */
+ sd_ctrl_write32_as_16_and_16(host, CTL_STATUS, TMIO_MASK_IRQ);
- tmio_mmc_card_irq_status(host, &ireg, &status);
if (__tmio_mmc_card_detect_irq(host, ireg, status))
return IRQ_HANDLED;
if (__tmio_mmc_sdcard_irq(host, ireg, status))
@@ -812,8 +778,6 @@ static void tmio_mmc_request(struct mmc_host *mmc, struct mmc_request *mrq)
spin_unlock_irqrestore(&host->lock, flags);
- pm_runtime_get_sync(mmc_dev(mmc));
-
if (mrq->data) {
ret = tmio_mmc_start_data(host, mrq->data);
if (ret)
@@ -832,24 +796,14 @@ fail:
host->mrq = NULL;
mrq->cmd->error = ret;
mmc_request_done(mmc, mrq);
-
- pm_runtime_mark_last_busy(mmc_dev(mmc));
- pm_runtime_put_autosuspend(mmc_dev(mmc));
}
-static int tmio_mmc_clk_update(struct tmio_mmc_host *host)
+static int tmio_mmc_clk_enable(struct tmio_mmc_host *host)
{
- struct mmc_host *mmc = host->mmc;
- int ret;
-
if (!host->clk_enable)
return -ENOTSUPP;
- ret = host->clk_enable(host->pdev, &mmc->f_max);
- if (!ret)
- mmc->f_min = mmc->f_max / 512;
-
- return ret;
+ return host->clk_enable(host);
}
static void tmio_mmc_power_on(struct tmio_mmc_host *host, unsigned short vdd)
@@ -925,8 +879,6 @@ static void tmio_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
struct device *dev = &host->pdev->dev;
unsigned long flags;
- pm_runtime_get_sync(mmc_dev(mmc));
-
mutex_lock(&host->ios_lock);
spin_lock_irqsave(&host->lock, flags);
@@ -959,14 +911,12 @@ static void tmio_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
tmio_mmc_clk_stop(host);
break;
case MMC_POWER_UP:
- tmio_mmc_set_clock(host, ios->clock);
tmio_mmc_power_on(host, ios->vdd);
- tmio_mmc_clk_start(host);
+ tmio_mmc_set_clock(host, ios->clock);
tmio_mmc_set_bus_width(host, ios->bus_width);
break;
case MMC_POWER_ON:
tmio_mmc_set_clock(host, ios->clock);
- tmio_mmc_clk_start(host);
tmio_mmc_set_bus_width(host, ios->bus_width);
break;
}
@@ -983,9 +933,6 @@ static void tmio_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
host->clk_cache = ios->clock;
mutex_unlock(&host->ios_lock);
-
- pm_runtime_mark_last_busy(mmc_dev(mmc));
- pm_runtime_put_autosuspend(mmc_dev(mmc));
}
static int tmio_mmc_get_ro(struct mmc_host *mmc)
@@ -996,11 +943,8 @@ static int tmio_mmc_get_ro(struct mmc_host *mmc)
if (ret >= 0)
return ret;
- pm_runtime_get_sync(mmc_dev(mmc));
ret = !((pdata->flags & TMIO_MMC_WRPROTECT_DISABLE) ||
- (sd_ctrl_read32(host, CTL_STATUS) & TMIO_STAT_WRPROTECT));
- pm_runtime_mark_last_busy(mmc_dev(mmc));
- pm_runtime_put_autosuspend(mmc_dev(mmc));
+ (sd_ctrl_read16_and_16_as_32(host, CTL_STATUS) & TMIO_STAT_WRPROTECT));
return ret;
}
@@ -1016,12 +960,20 @@ static int tmio_multi_io_quirk(struct mmc_card *card,
return blk_size;
}
-static const struct mmc_host_ops tmio_mmc_ops = {
+static int tmio_mmc_card_busy(struct mmc_host *mmc)
+{
+ struct tmio_mmc_host *host = mmc_priv(mmc);
+
+ return !(sd_ctrl_read16_and_16_as_32(host, CTL_STATUS) & TMIO_STAT_DAT0);
+}
+
+static struct mmc_host_ops tmio_mmc_ops = {
.request = tmio_mmc_request,
.set_ios = tmio_mmc_set_ios,
.get_ro = tmio_mmc_get_ro,
.get_cd = mmc_gpio_get_cd,
.enable_sdio_irq = tmio_mmc_enable_sdio_irq,
+ .card_busy = tmio_mmc_card_busy,
.multi_io_quirk = tmio_multi_io_quirk,
};
@@ -1120,7 +1072,9 @@ int tmio_mmc_host_probe(struct tmio_mmc_host *_host,
goto host_free;
}
+ tmio_mmc_ops.start_signal_voltage_switch = _host->start_signal_voltage_switch;
mmc->ops = &tmio_mmc_ops;
+
mmc->caps |= MMC_CAP_4_BIT_DATA | pdata->capabilities;
mmc->caps2 |= pdata->capabilities2;
mmc->max_segs = 32;
@@ -1135,7 +1089,7 @@ int tmio_mmc_host_probe(struct tmio_mmc_host *_host,
mmc->caps & MMC_CAP_NONREMOVABLE ||
mmc->slot.cd_irq >= 0);
- if (tmio_mmc_clk_update(_host) < 0) {
+ if (tmio_mmc_clk_enable(_host) < 0) {
mmc->f_max = pdata->hclk;
mmc->f_min = mmc->f_max / 512;
}
@@ -1159,7 +1113,7 @@ int tmio_mmc_host_probe(struct tmio_mmc_host *_host,
tmio_mmc_clk_stop(_host);
tmio_mmc_reset(_host);
- _host->sdcard_irq_mask = sd_ctrl_read32(_host, CTL_IRQ_MASK);
+ _host->sdcard_irq_mask = sd_ctrl_read16_and_16_as_32(_host, CTL_IRQ_MASK);
tmio_mmc_disable_mmc_irqs(_host, TMIO_MASK_ALL);
/* Unmask the IRQs we want to know about */
@@ -1251,7 +1205,7 @@ int tmio_mmc_host_runtime_suspend(struct device *dev)
tmio_mmc_clk_stop(host);
if (host->clk_disable)
- host->clk_disable(host->pdev);
+ host->clk_disable(host);
return 0;
}
@@ -1263,12 +1217,10 @@ int tmio_mmc_host_runtime_resume(struct device *dev)
struct tmio_mmc_host *host = mmc_priv(mmc);
tmio_mmc_reset(host);
- tmio_mmc_clk_update(host);
+ tmio_mmc_clk_enable(host);
- if (host->clk_cache) {
+ if (host->clk_cache)
tmio_mmc_set_clock(host, host->clk_cache);
- tmio_mmc_clk_start(host);
- }
tmio_mmc_enable_dma(host, true);
diff --git a/drivers/mmc/host/toshsd.c b/drivers/mmc/host/toshsd.c
index e2cdd5fb1..553ef41bb 100644
--- a/drivers/mmc/host/toshsd.c
+++ b/drivers/mmc/host/toshsd.c
@@ -21,6 +21,7 @@
#include <linux/interrupt.h>
#include <linux/io.h>
#include <linux/pm.h>
+#include <linux/pm_runtime.h>
#include <linux/mmc/host.h>
#include <linux/mmc/mmc.h>
diff --git a/drivers/mmc/host/usdhi6rol0.c b/drivers/mmc/host/usdhi6rol0.c
index 807c06e20..1bd5f1a18 100644
--- a/drivers/mmc/host/usdhi6rol0.c
+++ b/drivers/mmc/host/usdhi6rol0.c
@@ -22,6 +22,7 @@
#include <linux/mmc/sdio.h>
#include <linux/module.h>
#include <linux/pagemap.h>
+#include <linux/pinctrl/consumer.h>
#include <linux/platform_device.h>
#include <linux/scatterlist.h>
#include <linux/string.h>
@@ -198,6 +199,11 @@ struct usdhi6_host {
struct dma_chan *chan_rx;
struct dma_chan *chan_tx;
bool dma_active;
+
+ /* Pin control */
+ struct pinctrl *pinctrl;
+ struct pinctrl_state *pins_default;
+ struct pinctrl_state *pins_uhs;
};
/* I/O primitives */
@@ -1147,12 +1153,45 @@ static void usdhi6_enable_sdio_irq(struct mmc_host *mmc, int enable)
}
}
+static int usdhi6_set_pinstates(struct usdhi6_host *host, int voltage)
+{
+ if (IS_ERR(host->pins_uhs))
+ return 0;
+
+ switch (voltage) {
+ case MMC_SIGNAL_VOLTAGE_180:
+ case MMC_SIGNAL_VOLTAGE_120:
+ return pinctrl_select_state(host->pinctrl,
+ host->pins_uhs);
+
+ default:
+ return pinctrl_select_state(host->pinctrl,
+ host->pins_default);
+ }
+}
+
+static int usdhi6_sig_volt_switch(struct mmc_host *mmc, struct mmc_ios *ios)
+{
+ int ret;
+
+ ret = mmc_regulator_set_vqmmc(mmc, ios);
+ if (ret < 0)
+ return ret;
+
+ ret = usdhi6_set_pinstates(mmc_priv(mmc), ios->signal_voltage);
+ if (ret)
+ dev_warn_once(mmc_dev(mmc),
+ "Failed to set pinstate err=%d\n", ret);
+ return ret;
+}
+
static struct mmc_host_ops usdhi6_ops = {
.request = usdhi6_request,
.set_ios = usdhi6_set_ios,
.get_cd = usdhi6_get_cd,
.get_ro = usdhi6_get_ro,
.enable_sdio_irq = usdhi6_enable_sdio_irq,
+ .start_signal_voltage_switch = usdhi6_sig_volt_switch,
};
/* State machine handlers */
@@ -1730,6 +1769,25 @@ static int usdhi6_probe(struct platform_device *pdev)
host->wait = USDHI6_WAIT_FOR_REQUEST;
host->timeout = msecs_to_jiffies(4000);
+ host->pinctrl = devm_pinctrl_get(&pdev->dev);
+ if (IS_ERR(host->pinctrl)) {
+ ret = PTR_ERR(host->pinctrl);
+ goto e_free_mmc;
+ }
+
+ host->pins_uhs = pinctrl_lookup_state(host->pinctrl, "state_uhs");
+ if (!IS_ERR(host->pins_uhs)) {
+ host->pins_default = pinctrl_lookup_state(host->pinctrl,
+ PINCTRL_STATE_DEFAULT);
+
+ if (IS_ERR(host->pins_default)) {
+ dev_err(dev,
+ "UHS pinctrl requires a default pin state.\n");
+ ret = PTR_ERR(host->pins_default);
+ goto e_free_mmc;
+ }
+ }
+
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
host->base = devm_ioremap_resource(dev, res);
if (IS_ERR(host->base)) {
@@ -1785,7 +1843,7 @@ static int usdhi6_probe(struct platform_device *pdev)
mmc->ops = &usdhi6_ops;
mmc->caps |= MMC_CAP_SD_HIGHSPEED | MMC_CAP_MMC_HIGHSPEED |
- MMC_CAP_UHS_SDR50 | MMC_CAP_UHS_DDR50 | MMC_CAP_SDIO_IRQ;
+ MMC_CAP_SDIO_IRQ;
/* Set .max_segs to some random number. Feel free to adjust. */
mmc->max_segs = 32;
mmc->max_blk_size = 512;