mmc: dw_mmc: add support for the other bit of sdio interrupt

The bit of sdio interrupt is 16 in designware implementation,
but it is 24 on Rockchip SoCs.This patch add sdio_id0 for the
number of slot0 in the SDIO interrupt registers.

Signed-off-by: Addy Ke <addy.ke@rock-chips.com>
Reviewed-by: Doug Anderson <dianders@chromium.org>
Acked-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

diff --git a/drivers/mmc/host/dw_mmc-rockchip.c b/drivers/mmc/host/dw_mmc-rockchip.c
index bbb4ec3..5650ac4 100644 (file)
--- a/drivers/mmc/host/dw_mmc-rockchip.c
+++ b/drivers/mmc/host/dw_mmc-rockchip.c
@@ -68,14 +68,24 @@ static void dw_mci_rk3288_set_ios(struct dw_mci *host, struct mmc_ios *ios)
        }
 }
 
+static int dw_mci_rockchip_init(struct dw_mci *host)
+{
+       /* It is slot 8 on Rockchip SoCs */
+       host->sdio_id0 = 8;
+
+       return 0;
+}
+
 static const struct dw_mci_drv_data rk2928_drv_data = {
        .prepare_command        = dw_mci_rockchip_prepare_command,
+       .init                   = dw_mci_rockchip_init,
 };
 
 static const struct dw_mci_drv_data rk3288_drv_data = {
        .prepare_command        = dw_mci_rockchip_prepare_command,
        .set_ios                = dw_mci_rk3288_set_ios,
        .setup_clock    = dw_mci_rk3288_setup_clock,
+       .init                   = dw_mci_rockchip_init,
 };
 
 static const struct of_device_id dw_mci_rockchip_match[] = {

diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c
index 5a37c33..b4c3044 100644 (file)
--- a/drivers/mmc/host/dw_mmc.c
+++ b/drivers/mmc/host/dw_mmc.c
@@ -919,7 +919,7 @@ static void dw_mci_setup_bus(struct dw_mci_slot *slot, bool force_clkinit)
 
                /* enable clock; only low power if no SDIO */
                clk_en_a = SDMMC_CLKEN_ENABLE << slot->id;
-               if (!(mci_readl(host, INTMASK) & SDMMC_INT_SDIO(slot->id)))
+               if (!(mci_readl(host, INTMASK) & SDMMC_INT_SDIO(slot->sdio_id)))
                        clk_en_a |= SDMMC_CLKEN_LOW_PWR << slot->id;
                mci_writel(host, CLKENA, clk_en_a);
 
@@ -1280,10 +1280,10 @@ static void dw_mci_enable_sdio_irq(struct mmc_host *mmc, int enb)
                dw_mci_disable_low_power(slot);
 
                mci_writel(host, INTMASK,
-                          (int_mask | SDMMC_INT_SDIO(slot->id)));
+                          (int_mask | SDMMC_INT_SDIO(slot->sdio_id)));
        } else {
                mci_writel(host, INTMASK,
-                          (int_mask & ~SDMMC_INT_SDIO(slot->id)));
+                          (int_mask & ~SDMMC_INT_SDIO(slot->sdio_id)));
        }
 }
 
@@ -2152,8 +2152,9 @@ static irqreturn_t dw_mci_interrupt(int irq, void *dev_id)
                /* Handle SDIO Interrupts */
                for (i = 0; i < host->num_slots; i++) {
                        struct dw_mci_slot *slot = host->slot[i];
-                       if (pending & SDMMC_INT_SDIO(i)) {
-                               mci_writel(host, RINTSTS, SDMMC_INT_SDIO(i));
+                       if (pending & SDMMC_INT_SDIO(slot->sdio_id)) {
+                               mci_writel(host, RINTSTS,
+                                          SDMMC_INT_SDIO(slot->sdio_id));
                                mmc_signal_sdio_irq(slot->mmc);
                        }
                }
@@ -2252,6 +2253,7 @@ static int dw_mci_init_slot(struct dw_mci *host, unsigned int id)
 
        slot = mmc_priv(mmc);
        slot->id = id;
+       slot->sdio_id = host->sdio_id0 + id;
        slot->mmc = mmc;
        slot->host = host;
        host->slot[id] = slot;

diff --git a/drivers/mmc/host/dw_mmc.h b/drivers/mmc/host/dw_mmc.h
index 58d8a54..0d0f7a2 100644 (file)
--- a/drivers/mmc/host/dw_mmc.h
+++ b/drivers/mmc/host/dw_mmc.h
@@ -225,6 +225,7 @@ extern int dw_mci_resume(struct dw_mci *host);
  *     with CONFIG_MMC_CLKGATE.
  * @flags: Random state bits associated with the slot.
  * @id: Number of this slot.
+ * @sdio_id: Number of this slot in the SDIO interrupt registers.
  */
 struct dw_mci_slot {
        struct mmc_host         *mmc;
@@ -244,6 +245,7 @@ struct dw_mci_slot {
 #define DW_MMC_CARD_PRESENT    0
 #define DW_MMC_CARD_NEED_INIT  1
        int                     id;
+       int                     sdio_id;
 };
 
 struct dw_mci_tuning_data {

diff --git a/include/linux/mmc/dw_mmc.h b/include/linux/mmc/dw_mmc.h
index 0a55115..42b724e 100644 (file)
--- a/include/linux/mmc/dw_mmc.h
+++ b/include/linux/mmc/dw_mmc.h
@@ -97,6 +97,7 @@ struct mmc_data;
  * @quirks: Set of quirks that apply to specific versions of the IP.
  * @irq_flags: The flags to be passed to request_irq.
  * @irq: The irq value to be passed to request_irq.
+ * @sdio_id0: Number of slot0 in the SDIO interrupt registers.
  *
  * Locking
  * =======
@@ -193,6 +194,8 @@ struct dw_mci {
        bool                    vqmmc_enabled;
        unsigned long           irq_flags; /* IRQ flags */
        int                     irq;
+
+       int                     sdio_id0;
 };
 
 /* DMA ops for Internal/External DMAC interface */