linux-kernel - [PATCH V2 15/27] mmc: mmci: add set

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Message-ID: <1537268144-21152-16-git-send-email-ludovic.Barre@st.com>
Date:   Tue, 18 Sep 2018 12:55:32 +0200
From:   Ludovic Barre <ludovic.Barre@...com>
To:     Ulf Hansson <ulf.hansson@...aro.org>,
        Rob Herring <robh+dt@...nel.org>
CC:     Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Alexandre Torgue <alexandre.torgue@...com>,
        <benjamin.gaignard@...aro.org>, Gerald Baeza <gerald.baeza@...com>,
        Loic Pallardy <loic.pallardy@...com>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-mmc@...r.kernel.org>,
        <linux-stm32@...md-mailman.stormreply.com>,
        Ludovic Barre <ludovic.barre@...com>
Subject: [PATCH V2 15/27] mmc: mmci: add set_clk/pwrreg callbacks

From: Ludovic Barre <ludovic.barre@...com>

This patch adds set_clkreg and set_pwrreg callbacks
at mmci_host_ops to allow to call specific variant.
extends visibility of mmci_write_clk/pwrreg functions
to be used into specific file variant.

Signed-off-by: Ludovic Barre <ludovic.barre@...com>
---
 drivers/mmc/host/mmci.c | 16 ++++++++++++----
 drivers/mmc/host/mmci.h |  5 +++++
 2 files changed, 17 insertions(+), 4 deletions(-)

diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c
index 1593942..9d93fe7 100644
--- a/drivers/mmc/host/mmci.c
+++ b/drivers/mmc/host/mmci.c
@@ -252,7 +252,7 @@ static void mmci_reg_delay(struct mmci_host *host)
 /*
  * This must be called with host->lock held
  */
-static void mmci_write_clkreg(struct mmci_host *host, u32 clk)
+void mmci_write_clkreg(struct mmci_host *host, u32 clk)
 {
 	if (host->clk_reg != clk) {
 		host->clk_reg = clk;
@@ -263,7 +263,7 @@ static void mmci_write_clkreg(struct mmci_host *host, u32 clk)
 /*
  * This must be called with host->lock held
  */
-static void mmci_write_pwrreg(struct mmci_host *host, u32 pwr)
+void mmci_write_pwrreg(struct mmci_host *host, u32 pwr)
 {
 	if (host->pwr_reg != pwr) {
 		host->pwr_reg = pwr;
@@ -1543,8 +1543,16 @@ static void mmci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
 
 	spin_lock_irqsave(&host->lock, flags);
 
-	mmci_set_clkreg(host, ios->clock);
-	mmci_write_pwrreg(host, pwr);
+	if (host->ops && host->ops->set_clkreg)
+		host->ops->set_clkreg(host, ios->clock);
+	else
+		mmci_set_clkreg(host, ios->clock);
+
+	if (host->ops && host->ops->set_pwrreg)
+		host->ops->set_pwrreg(host, pwr);
+	else
+		mmci_write_pwrreg(host, pwr);
+
 	mmci_reg_delay(host);
 
 	spin_unlock_irqrestore(&host->lock, flags);
diff --git a/drivers/mmc/host/mmci.h b/drivers/mmc/host/mmci.h
index d14010e..2d0e00d 100644
--- a/drivers/mmc/host/mmci.h
+++ b/drivers/mmc/host/mmci.h
@@ -284,6 +284,8 @@ struct mmci_host_ops {
 	int (*dma_start)(struct mmci_host *host, unsigned int *datactrl);
 	void (*dma_finalize)(struct mmci_host *host, struct mmc_data *data);
 	void (*dma_error)(struct mmci_host *host);
+	void (*set_clkreg)(struct mmci_host *host, unsigned int desired);
+	void (*set_pwrreg)(struct mmci_host *host, unsigned int pwr);
 };
 
 struct mmci_host {
@@ -332,6 +334,9 @@ struct mmci_host {
 	s32			next_cookie;
 };
 
+void mmci_write_clkreg(struct mmci_host *host, u32 clk);
+void mmci_write_pwrreg(struct mmci_host *host, u32 pwr);
+
 void qcom_variant_init(struct mmci_host *host);
 void mmci_variant_init(struct mmci_host *host);
 
-- 
2.7.4