[PATCH v4] mmc: dw_mmc: add support for the other bit of sdio interrupt

[Ulf Hansson]

On 4 November 2014 15:03, Addy Ke <addy.ke at rock-chips.com> wrote:
> 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 at rock-chips.com>

Thanks! Applied for next.

Kind regards
Uffe


> ---
> Changes in v2:
> - rebase on http://git.linaro.org/git/people/ulf.hansson/mmc.git, next branch
> Changes in v3:
> - Remove dts for sdio_id0, just replace this with 8, suggested by Doug
> - Change to support all Rockchip Socs, suggested by Heiko
> Changes in v4:
> - use init-hook to set sdio_id0, suggested by Jaehoon
>
>  drivers/mmc/host/dw_mmc-rockchip.c | 10 ++++++++++
>  drivers/mmc/host/dw_mmc.c          | 12 +++++++-----
>  drivers/mmc/host/dw_mmc.h          |  2 ++
>  include/linux/mmc/dw_mmc.h         |  3 +++
>  4 files changed, 22 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/mmc/host/dw_mmc-rockchip.c b/drivers/mmc/host/dw_mmc-rockchip.c
> index bbb4ec3..5650ac4 100644
> --- 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 bb46b1b..a633b58 100644
> --- a/drivers/mmc/host/dw_mmc.c
> +++ b/drivers/mmc/host/dw_mmc.c
> @@ -823,7 +823,7 @@ 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);
>
> @@ -1184,10 +1184,10 @@ 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)));
>         }
>  }
>
> @@ -2056,8 +2056,9 @@ 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);
>                         }
>                 }
> @@ -2145,6 +2146,7 @@ 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 71d4995..0562f10 100644
> --- a/drivers/mmc/host/dw_mmc.h
> +++ b/drivers/mmc/host/dw_mmc.h
> @@ -214,6 +214,7 @@ 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;
> @@ -233,6 +234,7 @@ 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 69d0814..72c319f 100644
> --- a/include/linux/mmc/dw_mmc.h
> +++ b/include/linux/mmc/dw_mmc.h
> @@ -96,6 +96,7 @@ 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
>   * =======
> @@ -191,6 +192,8 @@ struct dw_mci {
>         bool                    vqmmc_enabled;
>         unsigned long           irq_flags; /* IRQ flags */
>         int                     irq;
> +
> +       int                     sdio_id0;
>  };
>
>  /* DMA ops for Internal/External DMAC interface */
> --
> 1.8.3.2
>
>