sdhci: add no hi-speed bit quirk support

[net-next-2.6.git] / drivers / mmc / host / sdhci.c

diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index c6d1bd8d4ac43d917e2772f2242dcdea03aa6040..401527d273b5811e7a1981af12751ba099b490a8 100644 (file)
--- 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;
 
@@ -1159,12 +1170,18 @@ 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
                ctrl &= ~SDHCI_CTRL_4BITBUS;
 
-       if (ios->timing == MMC_TIMING_SD_HS)
+       if (ios->timing == MMC_TIMING_SD_HS &&
+           !(host->quirks & SDHCI_QUIRK_NO_HISPD_BIT))
                ctrl |= SDHCI_CTRL_HISPD;
        else
                ctrl &= ~SDHCI_CTRL_HISPD;
@@ -1603,7 +1620,10 @@ 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 +1632,13 @@ 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 +1714,8 @@ 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 +1813,12 @@ 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 +1911,14 @@ 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 +2003,11 @@ 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);