diff options
Diffstat (limited to 'drivers/mmc')
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; |