From 9d1fd9e7b19d66a35ee4e760b30a3b9a168c20a2 Mon Sep 17 00:00:00 2001
From: Balaji Rao <balajirrao@openmoko.org>
Date: Wed, 28 Jan 2009 19:30:42 +0000
Subject: Subject: pcf50606_rebase_changes,patch X-Git-Url:
 http://git.openmoko.org/?p=kernel.git;a=commitdiff_plain;h=938eddf17625cce0307f7612a3ea2560384e2384

pcf50606_rebase_changes,patch

This patch brings into andy-tracking all changes related to pcf50606 from old
balaji-tracking.
---
 drivers/mmc/host/s3cmci.c | 53 +++++++++++++++++++++++++++++++++++++++++------
 drivers/mmc/host/s3cmci.h |  3 +++
 2 files changed, 50 insertions(+), 6 deletions(-)

(limited to 'drivers/mmc')

diff --git a/drivers/mmc/host/s3cmci.c b/drivers/mmc/host/s3cmci.c
index 45c5192869b..a014b669fe4 100644
--- a/drivers/mmc/host/s3cmci.c
+++ b/drivers/mmc/host/s3cmci.c
@@ -1109,18 +1109,42 @@ static void s3cmci_set_clk(struct s3cmci_host *host, struct mmc_ios *ios)
 		host->real_rate = 0;
 }
 
+static int s3cmci_get_mv(int vdd)
+{
+	int mv = 1700; /* 1.7V for MMC_VDD_165_195 */
+	int bit;
+
+	for (bit = 0; bit != 24; bit++)
+		if (vdd == (1 << bit))
+			mv += 100 * (bit - 4);
+
+	return mv;
+}	
+
 static void s3cmci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
 {
 	struct s3cmci_host *host = mmc_priv(mmc);
 	u32 mci_con;
+	struct regulator *regulator;
+	int mv;
 
 	/* Set the power state */
 
 	mci_con = readl(host->base + S3C2410_SDICON);
 
+	regulator = host->regulator;
+
 	switch (ios->power_mode) {
-	case MMC_POWER_ON:
 	case MMC_POWER_UP:
+		if (regulator) {
+			mv = s3cmci_get_mv(ios->vdd);
+			regulator_set_voltage(regulator, mv * 1000, mv * 1000);
+			regulator_enable(regulator);
+		} else if (host->pdata->set_power) {
+			host->pdata->set_power(ios->power_mode, ios->vdd);
+		}  else
+			dev_err(&host->pdev->dev, "Can't MMC_POWERUP\n");
+	case MMC_POWER_ON:
 		s3c2410_gpio_cfgpin(S3C2410_GPE5, S3C2410_GPE5_SDCLK);
 		s3c2410_gpio_cfgpin(S3C2410_GPE6, S3C2410_GPE6_SDCMD);
 		s3c2410_gpio_cfgpin(S3C2410_GPE7, S3C2410_GPE7_SDDAT0);
@@ -1128,26 +1152,37 @@ static void s3cmci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
 		s3c2410_gpio_cfgpin(S3C2410_GPE9, S3C2410_GPE9_SDDAT2);
 		s3c2410_gpio_cfgpin(S3C2410_GPE10, S3C2410_GPE10_SDDAT3);
 
-		if (host->pdata->set_power)
+		if (regulator) {
+			mv = s3cmci_get_mv(ios->vdd);
+			regulator_set_voltage(regulator, mv * 1000, mv * 1000);
+		} else if (host->pdata->set_power) {
 			host->pdata->set_power(ios->power_mode, ios->vdd);
-
+		}  else
+			dev_err(&host->pdev->dev, "Can't MMC_POWERON\n");
+	
 		if (!host->is2440)
 			mci_con |= S3C2410_SDICON_FIFORESET;
 
 		break;
 
 	case MMC_POWER_OFF:
-	default:
 		s3c2410_gpio_setpin(S3C2410_GPE5, 0);
 		s3c2410_gpio_cfgpin(S3C2410_GPE5, S3C2410_GPE5_OUTP);
 
 		if (host->is2440)
 			mci_con |= S3C2440_SDICON_SDRESET;
 
-		if (host->pdata->set_power)
+		if (regulator) {
+			if (regulator_is_enabled(regulator))
+				regulator_disable(regulator);
+		} else if (host->pdata->set_power) {
 			host->pdata->set_power(ios->power_mode, ios->vdd);
-
+		}  else
+			dev_err(&host->pdev->dev, "Can't MMC_POWEROFF\n");
+	
 		break;
+	default:
+		printk(KERN_ERR "No such power mode %d\n", ios->power_mode);
 	}
 
 	s3cmci_set_clk(host, ios);
@@ -1429,6 +1464,12 @@ static int __devinit s3cmci_probe(struct platform_device *pdev, int is2440)
 		goto free_dmabuf;
 	}
 
+	host->regulator = regulator_get(&pdev->dev, "SD_3V3");
+	if (IS_ERR(host->regulator)) {
+		dev_err(&pdev->dev, "Regulator for SD_3V3 unavilable \n");
+		host->regulator = NULL;
+	}
+
 	ret = mmc_add_host(mmc);
 	if (ret) {
 		dev_err(&pdev->dev, "failed to add mmc host.\n");
diff --git a/drivers/mmc/host/s3cmci.h b/drivers/mmc/host/s3cmci.h
index c2b65b3488b..7f80047ee8c 100644
--- a/drivers/mmc/host/s3cmci.h
+++ b/drivers/mmc/host/s3cmci.h
@@ -10,6 +10,7 @@
 
 
 #include <mach/regs-sdi.h>
+#include <linux/regulator/consumer.h>
 
 /* FIXME: DMA Resource management ?! */
 #define S3CMCI_DMA 0
@@ -81,4 +82,6 @@ struct s3cmci_host {
 #ifdef CONFIG_CPU_FREQ
 	struct notifier_block	freq_transition;
 #endif
+
+	struct regulator *regulator;
 };
-- 
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