palmas: Add support for powering different ldos

It is not necessary that ldo1 is used to power on mmc.
So, add support for passing ldo registers for powering on mmc.
Reviewed-by: NTom Rini <trini@konsulko.com>
Signed-off-by: NLokesh Vutla <lokeshvutla@ti.com>

arch/arm/mach-omap2/omap5/hwinit.c

@@ -457,7 +457,7 @@ void v7_arch_cp15_set_acr(u32 acr, u32 cpu_midr, u32 cpu_rev_comb,
 #if defined(CONFIG_PALMAS_POWER)
 __weak void board_mmc_poweron_ldo(uint voltage)
 {
-	palmas_mmc1_poweron_ldo(voltage);
+	palmas_mmc1_poweron_ldo(LDO1_VOLTAGE, LDO1_CTRL, voltage);
 }
 
 void vmmc_pbias_config(uint voltage)

board/ti/dra7xx/evm.c

@@ -720,7 +720,7 @@ void board_mmc_poweron_ldo(uint voltage)
 			voltage = 0xa;
 		lp873x_mmc1_poweron_ldo(voltage);
 	} else {
-		palmas_mmc1_poweron_ldo(voltage);
+		palmas_mmc1_poweron_ldo(LDO1_VOLTAGE, LDO1_CTRL, voltage);
 	}
 }
 #endif

drivers/power/palmas.c

@@ -42,24 +42,21 @@ int lp873x_mmc1_poweron_ldo(uint voltage)
 }
 #endif
 
-int palmas_mmc1_poweron_ldo(uint voltage)
+int palmas_mmc1_poweron_ldo(uint ldo_volt, uint ldo_ctrl, uint voltage)
 {
 	u8 val = 0;
 
 #if defined(CONFIG_DRA7XX)
 	int ret;
-	/*
-	 * Currently valid for the dra7xx_evm board:
-	 * Set TPS659038 LDO1 to 3.0 V or 1.8V
-	 */
-	ret = palmas_i2c_write_u8(TPS65903X_CHIP_P1, LDO1_VOLTAGE, voltage);
+
+	ret = palmas_i2c_write_u8(TPS65903X_CHIP_P1, ldo_volt, voltage);
 	if (ret) {
 		printf("tps65903x: could not set LDO1 voltage.\n");
 		return ret;
 	}
 	/* TURN ON LDO1 */
 	val = RSC_MODE_SLEEP | RSC_MODE_ACTIVE;
-	ret = palmas_i2c_write_u8(TPS65903X_CHIP_P1, LDO1_CTRL, val);
+	ret = palmas_i2c_write_u8(TPS65903X_CHIP_P1, ldo_ctrl, val);
 	if (ret) {
 		printf("tps65903x: could not turn on LDO1.\n");
 		return ret;

include/palmas.h

@@ -129,7 +129,7 @@ static inline int palmas_i2c_read_u8(u8 chip_no, u8 reg, u8 *val)
 }
 
 void palmas_init_settings(void);
-int palmas_mmc1_poweron_ldo(uint voltage);
+int palmas_mmc1_poweron_ldo(uint ldo_volt, uint ldo_ctrl, uint voltage);
 int lp873x_mmc1_poweron_ldo(uint voltage);
 int twl603x_mmc1_set_ldo9(u8 vsel);
 int twl603x_audio_power(u8 on);