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ARMV7: OMAP: add convenience function to set TWL4030 regulator voltages

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This patch adds a function to allow one to easily set the target
voltage for the TWL4030 regulators.  It also modifies the existing
code to use this new function.  Applicable definitions are moved
out of the driver file and into the header file so that they are
generally accessible

Signed-off-by: Steve Sakoman <steve@sakoman.com>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
master
Steve Sakoman 15 years ago committed by Sandeep Paulraj
parent 0e7b62179f
commit 5a0a82f42b
2 changed files with 44 additions and 39 deletions
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
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  1. 69
      drivers/power/twl4030.c
  2. 14
      include/twl4030.h

69
drivers/power/twl4030.c
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@ -59,57 +59,48 @@ void twl4030_power_reset_init(void)
}
}
/*
* Power Init
* Set Device Group and Voltage
*/
#define DEV_GRP_P1 0x20
#define VAUX3_VSEL_28 0x03
#define DEV_GRP_ALL 0xE0
#define VPLL2_VSEL_18 0x05
#define VDAC_VSEL_18 0x03
void twl4030_pmrecv_vsel_cfg(u8 vsel_reg, u8 vsel_val,
u8 dev_grp, u8 dev_grp_sel)
{
/* Select the Device Group */
twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER, dev_grp_sel,
dev_grp);
/* Select the Voltage */
twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER, vsel_val,
vsel_reg);
}
void twl4030_power_init(void)
{
unsigned char byte;
/* set VAUX3 to 2.8V */
byte = DEV_GRP_P1;
twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER, byte,
TWL4030_PM_RECEIVER_VAUX3_DEV_GRP);
byte = VAUX3_VSEL_28;
twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER, byte,
TWL4030_PM_RECEIVER_VAUX3_DEDICATED);
twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VAUX3_DEDICATED,
TWL4030_PM_RECEIVER_VAUX3_VSEL_28,
TWL4030_PM_RECEIVER_VAUX3_DEV_GRP,
TWL4030_PM_RECEIVER_DEV_GRP_P1);
/* set VPLL2 to 1.8V */
byte = DEV_GRP_ALL;
twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER, byte,
TWL4030_PM_RECEIVER_VPLL2_DEV_GRP);
byte = VPLL2_VSEL_18;
twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER, byte,
TWL4030_PM_RECEIVER_VPLL2_DEDICATED);
twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VPLL2_DEDICATED,
TWL4030_PM_RECEIVER_VPLL2_VSEL_18,
TWL4030_PM_RECEIVER_VPLL2_DEV_GRP,
TWL4030_PM_RECEIVER_DEV_GRP_ALL);
/* set VDAC to 1.8V */
byte = DEV_GRP_P1;
twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER, byte,
TWL4030_PM_RECEIVER_VDAC_DEV_GRP);
byte = VDAC_VSEL_18;
twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER, byte,
TWL4030_PM_RECEIVER_VDAC_DEDICATED);
twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VDAC_DEDICATED,
TWL4030_PM_RECEIVER_VDAC_VSEL_18,
TWL4030_PM_RECEIVER_VDAC_DEV_GRP,
TWL4030_PM_RECEIVER_DEV_GRP_P1);
}
#define VMMC1_VSEL_30 0x02
void twl4030_power_mmc_init(void)
{
unsigned char byte;
byte = DEV_GRP_P1;
twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER, byte,
TWL4030_PM_RECEIVER_VMMC1_DEV_GRP);
/* 3 Volts */
byte = VMMC1_VSEL_30;
twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER, byte,
TWL4030_PM_RECEIVER_VMMC1_DEDICATED);
/* Set VMMC1 to 3 Volts */
twl4030_pmrecv_vsel_cfg(TWL4030_PM_RECEIVER_VMMC1_DEDICATED,
TWL4030_PM_RECEIVER_VMMC1_VSEL_30,
TWL4030_PM_RECEIVER_VMMC1_DEV_GRP,
TWL4030_PM_RECEIVER_DEV_GRP_P1);
}

14
include/twl4030.h
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@ -304,6 +304,17 @@
#define TWL4030_PM_RECEIVER_MAINREF_TYPE 0xF0
#define TWL4030_PM_RECEIVER_MAINREF_REMAP 0xF1
/* Voltage Selection in PM Receiver Module */
#define TWL4030_PM_RECEIVER_VAUX2_VSEL_18 0x05
#define TWL4030_PM_RECEIVER_VAUX3_VSEL_28 0x03
#define TWL4030_PM_RECEIVER_VPLL2_VSEL_18 0x05
#define TWL4030_PM_RECEIVER_VDAC_VSEL_18 0x03
#define TWL4030_PM_RECEIVER_VMMC1_VSEL_30 0x02
/* Device Selection in PM Receiver Module */
#define TWL4030_PM_RECEIVER_DEV_GRP_P1 0x20
#define TWL4030_PM_RECEIVER_DEV_GRP_ALL 0xE0
/* LED */
#define TWL4030_LED_LEDEN 0xEE
#define TWL4030_LED_LEDEN_LEDAON (1 << 0)
@ -500,6 +511,9 @@ static inline int twl4030_i2c_read_u8(u8 chip_no, u8 *val, u8 reg)
/* For hardware resetting */
void twl4030_power_reset_init(void);
/* For setting device group and voltage */
void twl4030_pmrecv_vsel_cfg(u8 vsel_reg, u8 vsel_val,
u8 dev_grp, u8 dev_grp_sel);
/* For initializing power device */
void twl4030_power_init(void);
/* For initializing mmc power */

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