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-rw-r--r--drivers/mmc/host/sdhci-of-esdhc.c6
-rw-r--r--drivers/mmc/host/sdhci-pci.c1
-rw-r--r--drivers/mmc/host/sdhci.c71
-rw-r--r--drivers/mmc/host/sdhci.h8
4 files changed, 39 insertions, 47 deletions
diff --git a/drivers/mmc/host/sdhci-of-esdhc.c b/drivers/mmc/host/sdhci-of-esdhc.c
index 797be7549..653f335be 100644
--- a/drivers/mmc/host/sdhci-of-esdhc.c
+++ b/drivers/mmc/host/sdhci-of-esdhc.c
@@ -208,6 +208,12 @@ static void esdhc_of_set_clock(struct sdhci_host *host, unsigned int clock)
if (clock == 0)
return;
+ /* Workaround to start pre_div at 2 for VNN < VENDOR_V_23 */
+ temp = esdhc_readw(host, SDHCI_HOST_VERSION);
+ temp = (temp & SDHCI_VENDOR_VER_MASK) >> SDHCI_VENDOR_VER_SHIFT;
+ if (temp < VENDOR_V_23)
+ pre_div = 2;
+
/* Workaround to reduce the clock frequency for p1010 esdhc */
if (of_find_compatible_node(NULL, NULL, "fsl,p1010-esdhc")) {
if (clock > 20000000)
diff --git a/drivers/mmc/host/sdhci-pci.c b/drivers/mmc/host/sdhci-pci.c
index 94f54d277..b3b0a3e4f 100644
--- a/drivers/mmc/host/sdhci-pci.c
+++ b/drivers/mmc/host/sdhci-pci.c
@@ -618,6 +618,7 @@ static int jmicron_resume(struct sdhci_pci_chip *chip)
static const struct sdhci_pci_fixes sdhci_o2 = {
.probe = sdhci_pci_o2_probe,
.quirks = SDHCI_QUIRK_NO_ENDATTR_IN_NOPDESC,
+ .quirks2 = SDHCI_QUIRK2_CLEAR_TRANSFERMODE_REG_BEFORE_CMD,
.probe_slot = sdhci_pci_o2_probe_slot,
.resume = sdhci_pci_o2_resume,
};
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index 1dbe93232..b0c915a35 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -54,8 +54,7 @@ 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_pre_dma_transfer(struct sdhci_host *host,
- struct mmc_data *data,
- struct sdhci_host_next *next);
+ struct mmc_data *data);
static int sdhci_do_get_cd(struct sdhci_host *host);
#ifdef CONFIG_PM
@@ -496,7 +495,7 @@ static int sdhci_adma_table_pre(struct sdhci_host *host,
goto fail;
BUG_ON(host->align_addr & host->align_mask);
- host->sg_count = sdhci_pre_dma_transfer(host, data, NULL);
+ host->sg_count = sdhci_pre_dma_transfer(host, data);
if (host->sg_count < 0)
goto unmap_align;
@@ -635,9 +634,11 @@ static void sdhci_adma_table_post(struct sdhci_host *host,
}
}
- if (!data->host_cookie)
+ if (data->host_cookie == COOKIE_MAPPED) {
dma_unmap_sg(mmc_dev(host->mmc), data->sg,
data->sg_len, direction);
+ data->host_cookie = COOKIE_UNMAPPED;
+ }
}
static u8 sdhci_calc_timeout(struct sdhci_host *host, struct mmc_command *cmd)
@@ -833,7 +834,7 @@ static void sdhci_prepare_data(struct sdhci_host *host, struct mmc_command *cmd)
} else {
int sg_cnt;
- sg_cnt = sdhci_pre_dma_transfer(host, data, NULL);
+ sg_cnt = sdhci_pre_dma_transfer(host, data);
if (sg_cnt <= 0) {
/*
* This only happens when someone fed
@@ -949,11 +950,13 @@ static void sdhci_finish_data(struct sdhci_host *host)
if (host->flags & SDHCI_USE_ADMA)
sdhci_adma_table_post(host, data);
else {
- if (!data->host_cookie)
+ if (data->host_cookie == COOKIE_MAPPED) {
dma_unmap_sg(mmc_dev(host->mmc),
data->sg, data->sg_len,
(data->flags & MMC_DATA_READ) ?
DMA_FROM_DEVICE : DMA_TO_DEVICE);
+ data->host_cookie = COOKIE_UNMAPPED;
+ }
}
}
@@ -1132,6 +1135,7 @@ static u16 sdhci_get_preset_value(struct sdhci_host *host)
preset = sdhci_readw(host, SDHCI_PRESET_FOR_SDR104);
break;
case MMC_TIMING_UHS_DDR50:
+ case MMC_TIMING_MMC_DDR52:
preset = sdhci_readw(host, SDHCI_PRESET_FOR_DDR50);
break;
case MMC_TIMING_MMC_HS400:
@@ -1559,7 +1563,8 @@ static void sdhci_do_set_ios(struct sdhci_host *host, struct mmc_ios *ios)
(ios->timing == MMC_TIMING_UHS_SDR25) ||
(ios->timing == MMC_TIMING_UHS_SDR50) ||
(ios->timing == MMC_TIMING_UHS_SDR104) ||
- (ios->timing == MMC_TIMING_UHS_DDR50))) {
+ (ios->timing == MMC_TIMING_UHS_DDR50) ||
+ (ios->timing == MMC_TIMING_MMC_DDR52))) {
u16 preset;
sdhci_enable_preset_value(host, true);
@@ -2097,49 +2102,36 @@ static void sdhci_post_req(struct mmc_host *mmc, struct mmc_request *mrq,
struct mmc_data *data = mrq->data;
if (host->flags & SDHCI_REQ_USE_DMA) {
- if (data->host_cookie)
+ if (data->host_cookie == COOKIE_GIVEN ||
+ data->host_cookie == COOKIE_MAPPED)
dma_unmap_sg(mmc_dev(host->mmc), data->sg, data->sg_len,
data->flags & MMC_DATA_WRITE ?
DMA_TO_DEVICE : DMA_FROM_DEVICE);
- mrq->data->host_cookie = 0;
+ data->host_cookie = COOKIE_UNMAPPED;
}
}
static int sdhci_pre_dma_transfer(struct sdhci_host *host,
- struct mmc_data *data,
- struct sdhci_host_next *next)
+ struct mmc_data *data)
{
int sg_count;
- if (!next && data->host_cookie &&
- data->host_cookie != host->next_data.cookie) {
- pr_debug(DRIVER_NAME "[%s] invalid cookie: %d, next-cookie %d\n",
- __func__, data->host_cookie, host->next_data.cookie);
- data->host_cookie = 0;
+ if (data->host_cookie == COOKIE_MAPPED) {
+ data->host_cookie = COOKIE_GIVEN;
+ return data->sg_count;
}
- /* Check if next job is already prepared */
- if (next ||
- (!next && data->host_cookie != host->next_data.cookie)) {
- sg_count = dma_map_sg(mmc_dev(host->mmc), data->sg,
- data->sg_len,
- data->flags & MMC_DATA_WRITE ?
- DMA_TO_DEVICE : DMA_FROM_DEVICE);
-
- } else {
- sg_count = host->next_data.sg_count;
- host->next_data.sg_count = 0;
- }
+ WARN_ON(data->host_cookie == COOKIE_GIVEN);
+ sg_count = dma_map_sg(mmc_dev(host->mmc), data->sg, data->sg_len,
+ data->flags & MMC_DATA_WRITE ?
+ DMA_TO_DEVICE : DMA_FROM_DEVICE);
if (sg_count == 0)
- return -EINVAL;
+ return -ENOSPC;
- if (next) {
- next->sg_count = sg_count;
- data->host_cookie = ++next->cookie < 0 ? 1 : next->cookie;
- } else
- host->sg_count = sg_count;
+ data->sg_count = sg_count;
+ data->host_cookie = COOKIE_MAPPED;
return sg_count;
}
@@ -2149,16 +2141,10 @@ static void sdhci_pre_req(struct mmc_host *mmc, struct mmc_request *mrq,
{
struct sdhci_host *host = mmc_priv(mmc);
- if (mrq->data->host_cookie) {
- mrq->data->host_cookie = 0;
- return;
- }
+ mrq->data->host_cookie = COOKIE_UNMAPPED;
if (host->flags & SDHCI_REQ_USE_DMA)
- if (sdhci_pre_dma_transfer(host,
- mrq->data,
- &host->next_data) < 0)
- mrq->data->host_cookie = 0;
+ sdhci_pre_dma_transfer(host, mrq->data);
}
static void sdhci_card_event(struct mmc_host *mmc)
@@ -3030,7 +3016,6 @@ int sdhci_add_host(struct sdhci_host *host)
host->max_clk = host->ops->get_max_clock(host);
}
- host->next_data.cookie = 1;
/*
* In case of Host Controller v3.00, find out whether clock
* multiplier is supported.
diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h
index 5521d2936..a9512a421 100644
--- a/drivers/mmc/host/sdhci.h
+++ b/drivers/mmc/host/sdhci.h
@@ -309,9 +309,10 @@ struct sdhci_adma2_64_desc {
*/
#define SDHCI_MAX_SEGS 128
-struct sdhci_host_next {
- unsigned int sg_count;
- s32 cookie;
+enum sdhci_cookie {
+ COOKIE_UNMAPPED,
+ COOKIE_MAPPED,
+ COOKIE_GIVEN,
};
struct sdhci_host {
@@ -503,7 +504,6 @@ struct sdhci_host {
unsigned int tuning_mode; /* Re-tuning mode supported by host */
#define SDHCI_TUNING_MODE_1 0
- struct sdhci_host_next next_data;
unsigned long private[0] ____cacheline_aligned;
};
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-23 03:20:15 +0000