commit a85362fb3e1fc7833723accddbbae431091d06b8
author Paul Kocialkowski <contact@paulk.fr> Sat Feb 27 19:18:51 2016 +0100
committer Tom Rini <trini@konsulko.com> Tue Mar 15 15:10:51 2016 -0400
tree 60790c8114587af290b4ab1ff71347a7195ed2a3
parent d7b6a75497ea2a33a1d2e4b8fa4d98dc8c7e876b

power: twl6030: Device-index-specific MMC power initialization

Not every device has multiple MMC slots available, so it makes sense to enable
only the required LDOs for the available slots. Generic code in omap_hsmmc will
enable both VMMC and VAUX1, in doubt.

Signed-off-by: Paul Kocialkowski <contact@paulk.fr>

drivers/mmc/omap_hsmmc.c

diff --git a/drivers/mmc/omap_hsmmc.c b/drivers/mmc/omap_hsmmc.c
index 5f2db3b..7ee8283 100644
--- a/drivers/mmc/omap_hsmmc.c
+++ b/drivers/mmc/omap_hsmmc.c
@@ -104,8 +104,8 @@
 	value = readl((*ctrl)->control_pbiaslite);
 	value &= ~(MMC1_PBIASLITE_PWRDNZ | MMC1_PWRDNZ);
 	writel(value, (*ctrl)->control_pbiaslite);
-	/* set VMMC to 3V */
-	twl6030_power_mmc_init();
+	twl6030_power_mmc_init(0);
+	twl6030_power_mmc_init(1);
 	value = readl((*ctrl)->control_pbiaslite);
 	value |= MMC1_PBIASLITE_VMODE | MMC1_PBIASLITE_PWRDNZ | MMC1_PWRDNZ;
 	writel(value, (*ctrl)->control_pbiaslite);

drivers/power/twl6030.c

diff --git a/drivers/power/twl6030.c b/drivers/power/twl6030.c
index 2fb3967..7ed9129 100644
--- a/drivers/power/twl6030.c
+++ b/drivers/power/twl6030.c
@@ -212,34 +212,36 @@
 	return;
 }
 
-void twl6030_power_mmc_init()
+void twl6030_power_mmc_init(int dev_index)
 {
 	u8 value = 0;
 
-	/* 3.0V voltage output for VMMC */
-	twl6030_i2c_write_u8(TWL6030_CHIP_PM, TWL6030_VMMC_CFG_VOLTAGE,
-		TWL6030_CFG_VOLTAGE_30);
+	if (dev_index == 0) {
+		/* 3.0V voltage output for VMMC */
+		twl6030_i2c_write_u8(TWL6030_CHIP_PM, TWL6030_VMMC_CFG_VOLTAGE,
+			TWL6030_CFG_VOLTAGE_30);
 
-	/* Enable P1 output for VMMC */
-	twl6030_i2c_write_u8(TWL6030_CHIP_PM, TWL6030_VMMC_CFG_STATE,
-		TWL6030_CFG_STATE_P1 | TWL6030_CFG_STATE_ON);
+		/* Enable P1 output for VMMC */
+		twl6030_i2c_write_u8(TWL6030_CHIP_PM, TWL6030_VMMC_CFG_STATE,
+			TWL6030_CFG_STATE_P1 | TWL6030_CFG_STATE_ON);
 
-	twl6030_i2c_read_u8(TWL6030_CHIP_PM, TWL6030_PH_STS_BOOT, &value);
+		twl6030_i2c_read_u8(TWL6030_CHIP_PM, TWL6030_PH_STS_BOOT, &value);
+	} else if (dev_index == 1) {
+		/* BOOT2 indicates 1.8V/2.8V VAUX1 for eMMC */
+		if (value & TWL6030_PH_STS_BOOT2) {
+			/* 1.8V voltage output for VAUX1 */
+			twl6030_i2c_write_u8(TWL6030_CHIP_PM, TWL6030_VAUX1_CFG_VOLTAGE,
+				TWL6030_CFG_VOLTAGE_18);
+		} else {
+			/* 2.8V voltage output for VAUX1 */
+			twl6030_i2c_write_u8(TWL6030_CHIP_PM, TWL6030_VAUX1_CFG_VOLTAGE,
+				TWL6030_CFG_VOLTAGE_28);
+		}
 
-	/* BOOT2 indicates 1.8V/2.8V VAUX1 for eMMC */
-	if (value & TWL6030_PH_STS_BOOT2) {
-		/* 1.8V voltage output for VAUX1 */
-		twl6030_i2c_write_u8(TWL6030_CHIP_PM, TWL6030_VAUX1_CFG_VOLTAGE,
-			TWL6030_CFG_VOLTAGE_18);
-	} else {
-		/* 2.8V voltage output for VAUX1 */
-		twl6030_i2c_write_u8(TWL6030_CHIP_PM, TWL6030_VAUX1_CFG_VOLTAGE,
-			TWL6030_CFG_VOLTAGE_28);
+		/* Enable P1 output for VAUX */
+		twl6030_i2c_write_u8(TWL6030_CHIP_PM, TWL6030_VAUX1_CFG_STATE,
+			TWL6030_CFG_STATE_P1 | TWL6030_CFG_STATE_ON);
 	}
-
-	/* Enable P1 output for VAUX */
-	twl6030_i2c_write_u8(TWL6030_CHIP_PM, TWL6030_VAUX1_CFG_STATE,
-		TWL6030_CFG_STATE_P1 | TWL6030_CFG_STATE_ON);
 }
 
 void twl6030_usb_device_settings()

include/twl6030.h

diff --git a/include/twl6030.h b/include/twl6030.h
index a17a9b5..04295c9 100644
--- a/include/twl6030.h
+++ b/include/twl6030.h
@@ -185,6 +185,6 @@
 void twl6030_stop_usb_charging(void);
 int twl6030_get_battery_voltage(void);
 int twl6030_get_battery_current(void);
-void twl6030_power_mmc_init(void);
+void twl6030_power_mmc_init(int dev_index);
 
 #endif /* TWL6030_H */