linux-kernel - [RFC 1/3] mmc: sdhci: pass signal_voltage as an argument to voltage

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Date:	Wed,  2 Sep 2015 01:02:16 +0530
From:	Vaibhav Hiremath <vaibhav.hiremath@...aro.org>
To:	linux-mmc@...r.kernel.org
Cc:	ulf.hansson@...aro.org, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	Vaibhav Hiremath <vaibhav.hiremath@...aro.org>,
	Kevin Liu <kliu5@...vell.com>
Subject: [RFC 1/3] mmc: sdhci: pass signal_voltage as an argument to voltage_switch callback

In order to do particular voltage specific configuration in
sdhci_ops->voltage_switch() callback function, we need to
pass respective voltage value as well.
So this patch adds an extra argument for signal voltage to the
callback function.

Signed-off-by: Vaibhav Hiremath <vaibhav.hiremath@...aro.org>
Signed-off-by: Kevin Liu <kliu5@...vell.com>
---
 drivers/mmc/host/sdhci.c         | 2 +-
 drivers/mmc/host/sdhci.h         | 2 +-
 drivers/mmc/host/sdhci_f_sdh30.c | 3 ++-
 3 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index 1dbe932..3dd295f 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -1782,7 +1782,7 @@ static int sdhci_do_start_signal_voltage_switch(struct sdhci_host *host,
 
 		/* Some controller need to do more when switching */
 		if (host->ops->voltage_switch)
-			host->ops->voltage_switch(host);
+			host->ops->voltage_switch(host, MMC_SIGNAL_VOLTAGE_180);
 
 		/* 1.8V regulator output should be stable within 5 ms */
 		ctrl = sdhci_readw(host, SDHCI_HOST_CONTROL2);
diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h
index 5521d29..9b0e2a8 100644
--- a/drivers/mmc/host/sdhci.h
+++ b/drivers/mmc/host/sdhci.h
@@ -537,7 +537,7 @@ struct sdhci_ops {
 	void    (*adma_workaround)(struct sdhci_host *host, u32 intmask);
 	void	(*platform_init)(struct sdhci_host *host);
 	void    (*card_event)(struct sdhci_host *host);
-	void	(*voltage_switch)(struct sdhci_host *host);
+	void	(*voltage_switch)(struct sdhci_host *host, u8 signal_voltage);
 	int	(*select_drive_strength)(struct sdhci_host *host,
 					 struct mmc_card *card,
 					 unsigned int max_dtr, int host_drv,
diff --git a/drivers/mmc/host/sdhci_f_sdh30.c b/drivers/mmc/host/sdhci_f_sdh30.c
index 983b8b3..7ab1c20 100644
--- a/drivers/mmc/host/sdhci_f_sdh30.c
+++ b/drivers/mmc/host/sdhci_f_sdh30.c
@@ -49,7 +49,8 @@ struct f_sdhost_priv {
 	struct device *dev;
 };
 
-static void sdhci_f_sdh30_soft_voltage_switch(struct sdhci_host *host)
+static void sdhci_f_sdh30_soft_voltage_switch(struct sdhci_host *host,
+						u8 signal_voltage)
 {
 	struct f_sdhost_priv *priv = sdhci_priv(host);
 	u32 ctrl = 0;
-- 
1.9.1

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