[PATCH v2] mmc: dw_mmc: add support for the other bit of sdio interrupt
addy ke
addy.ke at rock-chips.com
Sun Nov 2 16:54:46 PST 2014
On 2014/10/31 18:43, Heiko Stübner wrote:
> Am Freitag, 31. Oktober 2014, 11:50:09 schrieb Addy Ke:
>> The bit of sdio interrupt is 16 in designware implementation,
>> but it is 24 in RK3288. This patch add sdio_id0 for the number
>> of slot0 in the SDIO interrupt registers, which can be set in
>> platform DT table, such as:
>> - rockchip,sdio-interrupt-slot0 = <8>;
>
> I just checked the manuals of rk3066 and rk3188 - and it seems the sdio
> interrupt is in bit 24 on all of them.
>
> Addy, could you check this and maybe enable this for all two variants we
> currently support?
OK, I will do so in my next patch. thank you!
>
>
> Thanks
> Heiko
>
>
>>
>> Signed-off-by: Addy Ke <addy.ke at rock-chips.com>
>> ---
>> Changes in v2:
>> - rebase on http://git.linaro.org/git/people/ulf.hansson/mmc.git, next
>> branch
>>
>> drivers/mmc/host/dw_mmc-rockchip.c | 13 +++++++++++++
>> drivers/mmc/host/dw_mmc.c | 12 +++++++-----
>> drivers/mmc/host/dw_mmc.h | 2 ++
>> include/linux/mmc/dw_mmc.h | 3 +++
>> 4 files changed, 25 insertions(+), 5 deletions(-)
>>
>> diff --git a/drivers/mmc/host/dw_mmc-rockchip.c
>> b/drivers/mmc/host/dw_mmc-rockchip.c index bbb4ec3..1cb3bc6 100644
>> --- a/drivers/mmc/host/dw_mmc-rockchip.c
>> +++ b/drivers/mmc/host/dw_mmc-rockchip.c
>> @@ -68,6 +68,18 @@ static void dw_mci_rk3288_set_ios(struct dw_mci *host,
>> struct mmc_ios *ios) }
>> }
>>
>> +static int dw_mci_rk3288_parse_dt(struct dw_mci *host)
>> +{
>> + struct device_node *np = host->dev->of_node;
>> + int sdio_id0;
>> +
>> + if (!of_property_read_u32(np, "rockchip,sdio-interrupt-slot0",
>> + &sdio_id0))
>> + host->sdio_id0 = sdio_id0;
>> +
>> + return 0;
>> +}
>> +
>> static const struct dw_mci_drv_data rk2928_drv_data = {
>> .prepare_command = dw_mci_rockchip_prepare_command,
>> };
>> @@ -76,6 +88,7 @@ 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,
>> + .parse_dt = dw_mci_rk3288_parse_dt,
>> };
>>
>> 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 */
>
>
>
>
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