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power: twl6035: complain on LDO9 error

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We handle i2c_write return code and complain in case of error. We propagate the
error, too, to allow better handling at the upper level in the future.

Signed-off-by: Vincent Stehlé <v-stehle@ti.com>
This commit is contained in:
Vincent Stehlé 2012-12-03 05:23:17 +00:00 • committed by Tom Rini
parent febc4cd48a
commit ce851c8b3c
2 changed files with 14 additions and 5 deletions
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17
drivers/power/twl6035.c
View file

@ -50,16 +50,25 @@ void twl6035_init_settings(void)
return; return;
} }
void twl6035_mmc1_poweron_ldo(void) int twl6035_mmc1_poweron_ldo(void)
{ {
u8 val = 0; u8 val = 0;
/* set LDO9 TWL6035 to 3V */ /* set LDO9 TWL6035 to 3V */
val = 0x2b; /* (3 -.9)*28 +1 */ val = 0x2b; /* (3 -.9)*28 +1 */
palmas_write_u8(0x48, LDO9_VOLTAGE, val);
if (palmas_write_u8(0x48, LDO9_VOLTAGE, val)) {
printf("twl6035: could not set LDO9 voltage.\n");
return 1;
}
/* TURN ON LDO9 */ /* TURN ON LDO9 */
val = LDO_ON | LDO_MODE_SLEEP | LDO_MODE_ACTIVE; val = LDO_ON | LDO_MODE_SLEEP | LDO_MODE_ACTIVE;
palmas_write_u8(0x48, LDO9_CTRL, val);
return; if (palmas_write_u8(0x48, LDO9_CTRL, val)) {
printf("twl6035: could not turn on LDO9.\n");
return 1;
}
return 0;
} }

2
include/twl6035.h
View file

@ -39,4 +39,4 @@
int twl6035_i2c_write_u8(u8 chip_no, u8 val, u8 reg); int twl6035_i2c_write_u8(u8 chip_no, u8 val, u8 reg);
int twl6035_i2c_read_u8(u8 chip_no, u8 *val, u8 reg); int twl6035_i2c_read_u8(u8 chip_no, u8 *val, u8 reg);
void twl6035_init_settings(void); void twl6035_init_settings(void);
void twl6035_mmc1_poweron_ldo(void); int twl6035_mmc1_poweron_ldo(void);