[PATCH v3 3/3] mmc: sdhci-of-dwcmshc: Add host software queue support

[Shawn Lin]

Signed-off-by: Shawn Lin <shawn.lin at rock-chips.com>

---

Changes in v2:
- fix Kconfig error

 drivers/mmc/host/Kconfig            |  1 +
 drivers/mmc/host/sdhci-of-dwcmshc.c | 29 ++++++++++++++++++++++++++++-
 2 files changed, 29 insertions(+), 1 deletion(-)

diff --git a/drivers/mmc/host/Kconfig b/drivers/mmc/host/Kconfig
index e96b302..e060bab 100644
--- a/drivers/mmc/host/Kconfig
+++ b/drivers/mmc/host/Kconfig
@@ -233,6 +233,7 @@ config MMC_SDHCI_OF_DWCMSHC
 	depends on MMC_SDHCI_PLTFM
 	depends on OF
 	depends on COMMON_CLK
+	select MMC_HSQ
 	help
 	  This selects Synopsys DesignWare Cores Mobile Storage Controller
 	  support.
diff --git a/drivers/mmc/host/sdhci-of-dwcmshc.c b/drivers/mmc/host/sdhci-of-dwcmshc.c
index fc917ed..e90fa69 100644
--- a/drivers/mmc/host/sdhci-of-dwcmshc.c
+++ b/drivers/mmc/host/sdhci-of-dwcmshc.c
@@ -20,6 +20,7 @@
 #include <linux/sizes.h>
 
 #include "sdhci-pltfm.h"
+#include "mmc_hsq.h"
 
 #define SDHCI_DWCMSHC_ARG2_STUFF	GENMASK(31, 16)
 
@@ -331,6 +332,14 @@ static void rk35xx_sdhci_reset(struct sdhci_host *host, u8 mask)
 	sdhci_reset(host, mask);
 }
 
+static void sdhci_dwcmshc_request_done(struct sdhci_host *host, struct mmc_request *mrq)
+{
+	if (mmc_hsq_finalize_request(host->mmc, mrq))
+		return;
+
+	mmc_request_done(host->mmc, mrq);
+}
+
 static const struct sdhci_ops sdhci_dwcmshc_ops = {
 	.set_clock		= sdhci_set_clock,
 	.set_bus_width		= sdhci_set_bus_width,
@@ -347,6 +356,7 @@ static const struct sdhci_ops sdhci_dwcmshc_rk35xx_ops = {
 	.get_max_clock		= sdhci_pltfm_clk_get_max_clock,
 	.reset			= rk35xx_sdhci_reset,
 	.adma_write_desc	= dwcmshc_adma_write_desc,
+	.request_done		= sdhci_dwcmshc_request_done,
 };
 
 static const struct sdhci_pltfm_data sdhci_dwcmshc_pdata = {
@@ -462,6 +472,7 @@ static int dwcmshc_probe(struct platform_device *pdev)
 	struct dwcmshc_priv *priv;
 	struct rk35xx_priv *rk_priv = NULL;
 	const struct sdhci_pltfm_data *pltfm_data;
+	struct mmc_hsq *hsq;
 	int err;
 	u32 extra;
 
@@ -515,6 +526,16 @@ static int dwcmshc_probe(struct platform_device *pdev)
 	host->mmc_host_ops.request = dwcmshc_request;
 	host->mmc_host_ops.hs400_enhanced_strobe = dwcmshc_hs400_enhanced_strobe;
 
+	hsq = devm_kzalloc(&pdev->dev, sizeof(*hsq), GFP_KERNEL);
+	if (!hsq) {
+		err = -ENOMEM;
+		goto err_clk;
+	}
+
+	err = mmc_hsq_init(hsq, host->mmc);
+	if (err)
+		goto err_clk;
+
 	if (pltfm_data == &sdhci_dwcmshc_rk35xx_pdata) {
 		rk_priv = devm_kzalloc(&pdev->dev, sizeof(struct rk35xx_priv), GFP_KERNEL);
 		if (!rk_priv) {
@@ -607,6 +628,8 @@ static int dwcmshc_suspend(struct device *dev)
 	struct rk35xx_priv *rk_priv = priv->priv;
 	int ret;
 
+	mmc_hsq_suspend(host->mmc);
+
 	ret = sdhci_suspend_host(host);
 	if (ret)
 		return ret;
@@ -647,7 +670,11 @@ static int dwcmshc_resume(struct device *dev)
 			return ret;
 	}
 
-	return sdhci_resume_host(host);
+	ret = sdhci_resume_host(host);
+	if (ret)
+		return ret;
+
+	return mmc_hsq_resume(host->mmc);
 }
 #endif
 
-- 
2.7.4