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path: root/drivers/mmc/host/sdhci.c
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Diffstat (limited to 'drivers/mmc/host/sdhci.c')
-rw-r--r--drivers/mmc/host/sdhci.c53
1 files changed, 46 insertions, 7 deletions
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index c6d1bd8d4ac..785512133b5 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -19,6 +19,7 @@
#include <linux/dma-mapping.h>
#include <linux/slab.h>
#include <linux/scatterlist.h>
+#include <linux/regulator/consumer.h>
#include <linux/leds.h>
@@ -817,8 +818,12 @@ static void sdhci_set_transfer_mode(struct sdhci_host *host,
WARN_ON(!host->data);
mode = SDHCI_TRNS_BLK_CNT_EN;
- if (data->blocks > 1)
- mode |= SDHCI_TRNS_MULTI;
+ if (data->blocks > 1) {
+ if (host->quirks & SDHCI_QUIRK_MULTIBLOCK_READ_ACMD12)
+ mode |= SDHCI_TRNS_MULTI | SDHCI_TRNS_ACMD12;
+ else
+ mode |= SDHCI_TRNS_MULTI;
+ }
if (data->flags & MMC_DATA_READ)
mode |= SDHCI_TRNS_READ;
if (host->flags & SDHCI_REQ_USE_DMA)
@@ -1108,6 +1113,12 @@ static void sdhci_request(struct mmc_host *mmc, struct mmc_request *mrq)
#ifndef SDHCI_USE_LEDS_CLASS
sdhci_activate_led(host);
#endif
+ if (host->quirks & SDHCI_QUIRK_MULTIBLOCK_READ_ACMD12) {
+ if (mrq->stop) {
+ mrq->data->stop = NULL;
+ mrq->stop = NULL;
+ }
+ }
host->mrq = mrq;
@@ -1159,6 +1170,11 @@ static void sdhci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
ctrl = sdhci_readb(host, SDHCI_HOST_CONTROL);
+ if (ios->bus_width == MMC_BUS_WIDTH_8)
+ ctrl |= SDHCI_CTRL_8BITBUS;
+ else
+ ctrl &= ~SDHCI_CTRL_8BITBUS;
+
if (ios->bus_width == MMC_BUS_WIDTH_4)
ctrl |= SDHCI_CTRL_4BITBUS;
else
@@ -1603,7 +1619,10 @@ int sdhci_suspend_host(struct sdhci_host *host, pm_message_t state)
free_irq(host->irq, host);
- return 0;
+ if (host->vmmc)
+ ret = regulator_disable(host->vmmc);
+
+ return ret;
}
EXPORT_SYMBOL_GPL(sdhci_suspend_host);
@@ -1612,6 +1631,13 @@ int sdhci_resume_host(struct sdhci_host *host)
{
int ret;
+ if (host->vmmc) {
+ int ret = regulator_enable(host->vmmc);
+ if (ret)
+ return ret;
+ }
+
+
if (host->flags & (SDHCI_USE_SDMA | SDHCI_USE_ADMA)) {
if (host->ops->enable_dma)
host->ops->enable_dma(host);
@@ -1687,7 +1713,8 @@ int sdhci_add_host(struct sdhci_host *host)
host->version);
}
- caps = sdhci_readl(host, SDHCI_CAPABILITIES);
+ caps = (host->quirks & SDHCI_QUIRK_MISSING_CAPS) ? host->caps :
+ sdhci_readl(host, SDHCI_CAPABILITIES);
if (host->quirks & SDHCI_QUIRK_FORCE_DMA)
host->flags |= SDHCI_USE_SDMA;
@@ -1785,13 +1812,12 @@ int sdhci_add_host(struct sdhci_host *host)
* Set host parameters.
*/
mmc->ops = &sdhci_ops;
- if (host->quirks & SDHCI_QUIRK_NONSTANDARD_CLOCK &&
- host->ops->set_clock && host->ops->get_min_clock)
+ if (host->ops->get_min_clock)
mmc->f_min = host->ops->get_min_clock(host);
else
mmc->f_min = host->max_clk / 256;
mmc->f_max = host->max_clk;
- mmc->caps = MMC_CAP_SDIO_IRQ;
+ mmc->caps |= MMC_CAP_SDIO_IRQ;
if (!(host->quirks & SDHCI_QUIRK_FORCE_1_BIT_DATA))
mmc->caps |= MMC_CAP_4_BIT_DATA;
@@ -1884,6 +1910,14 @@ int sdhci_add_host(struct sdhci_host *host)
if (ret)
goto untasklet;
+ host->vmmc = regulator_get(mmc_dev(mmc), "vmmc");
+ if (IS_ERR(host->vmmc)) {
+ printk(KERN_INFO "%s: no vmmc regulator found\n", mmc_hostname(mmc));
+ host->vmmc = NULL;
+ } else {
+ regulator_enable(host->vmmc);
+ }
+
sdhci_init(host, 0);
#ifdef CONFIG_MMC_DEBUG
@@ -1968,6 +2002,11 @@ void sdhci_remove_host(struct sdhci_host *host, int dead)
tasklet_kill(&host->card_tasklet);
tasklet_kill(&host->finish_tasklet);
+ if (host->vmmc) {
+ regulator_disable(host->vmmc);
+ regulator_put(host->vmmc);
+ }
+
kfree(host->adma_desc);
kfree(host->align_buffer);