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Date: Tue, 18 Dec 2018 20:33:18 +0800
From: Jjian Zhou <jjian.zhou@...iatek.com>
To: Ulf Hansson <ulf.hansson@...aro.org>
CC: Matthias Brugger <matthias.bgg@...il.com>,
Chaotian Jing <chaotian.jing@...iatek.com>,
Ryder Lee <ryder.lee@...iatek.com>,
jjian zhou <jjian.zhou@...iatek.com>,
Sean Wang <sean.wang@...iatek.com>,
<linux-mmc@...r.kernel.org>,
<linux-arm-kernel@...ts.infradead.org>,
<linux-mediatek@...ts.infradead.org>,
<srv_heupstream@...iatek.com>, <linux-kernel@...r.kernel.org>,
Yong Mao <yong.mao@...iatek.com>
Subject: [v4] mmc: mediatek: Add MMC_CAP_SDIO_IRQ support
From: jjian zhou <jjian.zhou@...iatek.com>
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@...iatek.com>
Signed-off-by: Chaotian Jing <chaotian.jing@...iatek.com>
Signed-off-by: Yong Mao <yong.mao@...iatek.com>
---
drivers/mmc/host/mtk-sd.c | 53 ++++++++++++++++++++++++++++++++++++++++++++---
1 file changed, 50 insertions(+), 3 deletions(-)
diff --git a/drivers/mmc/host/mtk-sd.c b/drivers/mmc/host/mtk-sd.c
index 6334cc7..8afeaf8 100644
--- a/drivers/mmc/host/mtk-sd.c
+++ b/drivers/mmc/host/mtk-sd.c
@@ -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 void msdc_hw_reset(struct mmc_host *mmc)
.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;
--
1.9.1
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