linux-kernel - [PATCH] mmc: dw_mmc: Use pre_request & post_request

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Message-ID: <20251210023008.1198860-1-ping.gao@samsung.com>
Date: Wed, 10 Dec 2025 10:30:08 +0800
From: "ping.gao" <ping.gao@...sung.com>
To: jh80.chung@...sung.com, ulf.hansson@...aro.org,
	linux-mmc@...r.kernel.org, linux-kernel@...r.kernel.org
Cc: "ping.gao" <ping.gao@...sung.com>
Subject: [PATCH] mmc: dw_mmc: Use pre_request & post_request_end helper

Use vendor drv function to let other vendor can add some vendor function
before and after request

Signed-off-by: ping.gao <ping.gao@...sung.com>
---
 drivers/mmc/host/dw_mmc.c | 7 ++++++-
 drivers/mmc/host/dw_mmc.h | 2 ++
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c
index c5db92bbb094..04fb92579509 100644
--- a/drivers/mmc/host/dw_mmc.c
+++ b/drivers/mmc/host/dw_mmc.c
@@ -1416,6 +1416,7 @@ static void dw_mci_request(struct mmc_host *mmc, struct mmc_request *mrq)
 {
 	struct dw_mci_slot *slot = mmc_priv(mmc);
 	struct dw_mci *host = slot->host;
+	const struct dw_mci_drv_data *drv_data = host->drv_data;
 
 	WARN_ON(slot->mrq);
 
@@ -1430,7 +1431,8 @@ static void dw_mci_request(struct mmc_host *mmc, struct mmc_request *mrq)
 		mmc_request_done(mmc, mrq);
 		return;
 	}
-
+	if (drv_data && drv_data->pre_request)
+		drv_data->pre_request(host);
 	spin_lock_bh(&host->lock);
 
 	dw_mci_queue_request(host, slot, mrq);
@@ -1897,6 +1899,7 @@ static void dw_mci_request_end(struct dw_mci *host, struct mmc_request *mrq)
 {
 	struct dw_mci_slot *slot;
 	struct mmc_host	*prev_mmc = host->slot->mmc;
+	const struct dw_mci_drv_data *drv_data = host->drv_data;
 
 	WARN_ON(host->cmd || host->data);
 
@@ -1921,6 +1924,8 @@ static void dw_mci_request_end(struct dw_mci *host, struct mmc_request *mrq)
 
 	spin_unlock(&host->lock);
 	mmc_request_done(prev_mmc, mrq);
+	if (drv_data && drv_data->post_request_end)
+		drv_data->post_request_end(host);
 	spin_lock(&host->lock);
 }
 
diff --git a/drivers/mmc/host/dw_mmc.h b/drivers/mmc/host/dw_mmc.h
index 648b4a5641bf..6c258e0865e7 100644
--- a/drivers/mmc/host/dw_mmc.h
+++ b/drivers/mmc/host/dw_mmc.h
@@ -618,5 +618,7 @@ struct dw_mci_drv_data {
 					  unsigned int timeout_ns);
 	u32		(*get_drto_clks)(struct dw_mci *host);
 	void		(*hw_reset)(struct dw_mci *host);
+	void		(*pre_request)(struct dw_mci *host);
+	void		(*post_request_end)(struct dw_mci *host);
 };
 #endif /* _DW_MMC_H_ */
-- 
2.50.1