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

@@ -104,8 +104,8 @@ static void omap4_vmmc_pbias_config(struct mmc *mmc)
 	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

@@ -212,10 +212,11 @@ void twl6030_init_battery_charging(void)
 	return;
 }
 
-void twl6030_power_mmc_init()
+void twl6030_power_mmc_init(int dev_index)
 {
 	u8 value = 0;
 
+	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);
@@ -225,7 +226,7 @@ void twl6030_power_mmc_init()
 			TWL6030_CFG_STATE_P1 | TWL6030_CFG_STATE_ON);
 
 		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 */
@@ -240,6 +241,7 @@ void twl6030_power_mmc_init()
 		/* 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

@@ -185,6 +185,6 @@ void twl6030_start_usb_charging(void);
 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 */