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mmc: mediatek: Add MMC_CAP_SDIO_IRQ support 

This patch enables support SDIO IRQs. It enables
MMC_CAP_SDIO_IRQ & MMC_CAP2_SDIO_IRQ_NOTHREAD
and implement the ->ack_sdio_irq callback.

Signed-off-by: Jjian Zhou <jjian.zhou@mediatek.com>
Signed-off-by: Chaotian Jing <chaotian.jing@mediatek.com>
Signed-off-by: Yong Mao <yong.mao@mediatek.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
jjian zhou 2018-12-18 20:33:18 +08:00 committed by Ulf Hansson
parent ca804a5615
commit 5215b2e952
1 changed files with 50 additions and 3 deletions
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53
drivers/mmc/host/mtk-sd.c
View File

@ -1114,6 +1114,7 @@ static void msdc_start_command(struct msdc_host *host,
struct mmc_request *mrq, struct mmc_command *cmd)
{
u32 rawcmd;
unsigned long flags;
WARN_ON(host->cmd);
host->cmd = cmd;
@ -1131,7 +1132,10 @@ static void msdc_start_command(struct msdc_host *host,
cmd->error = 0;
rawcmd = msdc_cmd_prepare_raw_cmd(host, mrq, cmd);
spin_lock_irqsave(&host->lock, flags);
sdr_set_bits(host->base + MSDC_INTEN, cmd_ints_mask);
spin_unlock_irqrestore(&host->lock, flags);
writel(cmd->arg, host->base + SDC_ARG);
writel(rawcmd, host->base + SDC_CMD);
}
@ -1351,6 +1355,31 @@ static void msdc_request_timeout(struct work_struct *work)
}
}
static void __msdc_enable_sdio_irq(struct mmc_host *mmc, int enb)
{
unsigned long flags;
struct msdc_host *host = mmc_priv(mmc);
spin_lock_irqsave(&host->lock, flags);
if (enb)
sdr_set_bits(host->base + MSDC_INTEN, MSDC_INTEN_SDIOIRQ);
else
sdr_clr_bits(host->base + MSDC_INTEN, MSDC_INTEN_SDIOIRQ);
spin_unlock_irqrestore(&host->lock, flags);
}
static void msdc_enable_sdio_irq(struct mmc_host *mmc, int enb)
{
struct msdc_host *host = mmc_priv(mmc);
__msdc_enable_sdio_irq(mmc, enb);
if (enb)
pm_runtime_get_noresume(host->dev);
else
pm_runtime_put_noidle(host->dev);
}
static irqreturn_t msdc_irq(int irq, void *dev_id)
{
struct msdc_host *host = (struct msdc_host *) dev_id;
@ -1373,7 +1402,12 @@ static irqreturn_t msdc_irq(int irq, void *dev_id)
data = host->data;
spin_unlock_irqrestore(&host->lock, flags);
if (!(events & event_mask))
if ((events & event_mask) & MSDC_INT_SDIOIRQ) {
__msdc_enable_sdio_irq(host->mmc, 0);
sdio_signal_irq(host->mmc);
}
if (!(events & (event_mask & ~MSDC_INT_SDIOIRQ)))
break;
if (!mrq) {
@ -1493,8 +1527,11 @@ static void msdc_init_hw(struct msdc_host *host)
*/
sdr_set_bits(host->base + SDC_CFG, SDC_CFG_SDIO);
/* disable detect SDIO device interrupt function */
sdr_clr_bits(host->base + SDC_CFG, SDC_CFG_SDIOIDE);
/* Config SDIO device detect interrupt function */
if (host->mmc->caps & MMC_CAP_SDIO_IRQ)
sdr_set_bits(host->base + SDC_CFG, SDC_CFG_SDIOIDE);
else
sdr_clr_bits(host->base + SDC_CFG, SDC_CFG_SDIOIDE);
/* Configure to default data timeout */
sdr_set_field(host->base + SDC_CFG, SDC_CFG_DTOC, 3);
@ -2013,6 +2050,11 @@ static void msdc_hw_reset(struct mmc_host *mmc)
sdr_clr_bits(host->base + EMMC_IOCON, 1);
}
static void msdc_ack_sdio_irq(struct mmc_host *mmc)
{
__msdc_enable_sdio_irq(mmc, 1);
}
static const struct mmc_host_ops mt_msdc_ops = {
.post_req = msdc_post_req,
.pre_req = msdc_pre_req,
@ -2020,6 +2062,8 @@ static const struct mmc_host_ops mt_msdc_ops = {
.set_ios = msdc_ops_set_ios,
.get_ro = mmc_gpio_get_ro,
.get_cd = mmc_gpio_get_cd,
.enable_sdio_irq = msdc_enable_sdio_irq,
.ack_sdio_irq = msdc_ack_sdio_irq,
.start_signal_voltage_switch = msdc_ops_switch_volt,
.card_busy = msdc_card_busy,
.execute_tuning = msdc_execute_tuning,
@ -2147,6 +2191,9 @@ static int msdc_drv_probe(struct platform_device *pdev)
else
mmc->f_min = DIV_ROUND_UP(host->src_clk_freq, 4 * 4095);
if (mmc->caps & MMC_CAP_SDIO_IRQ)
mmc->caps2 |= MMC_CAP2_SDIO_IRQ_NOTHREAD;
mmc->caps |= MMC_CAP_ERASE | MMC_CAP_CMD23;
/* MMC core transfer sizes tunable parameters */
mmc->max_segs = MAX_BD_NUM;