power: twl6035: complain on LDO9 error

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>

diff --git a/drivers/power/twl6035.c b/drivers/power/twl6035.c
index 624c09e85dc122fc8be04b00674d1ba985b4a6b9..d3de698cde776e342bdf7b4270ebe4e37abee42a 100644 (file)
--- a/drivers/power/twl6035.c
+++ b/drivers/power/twl6035.c
@@ -50,16 +50,25 @@ void twl6035_init_settings(void)
        return;
 }
 
-void twl6035_mmc1_poweron_ldo(void)
+int twl6035_mmc1_poweron_ldo(void)
 {
        u8 val = 0;
 
        /* set LDO9 TWL6035 to 3V */
        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 */
        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;
 }

diff --git a/include/twl6035.h b/include/twl6035.h
index e21ddbaf22fcbd6a5e220f7eb28353a60b4af5de..ce74348d443727159d81617d59d7a1b3f994e3e6 100644 (file)
--- a/include/twl6035.h
+++ b/include/twl6035.h
@@ -39,4 +39,4 @@
 int twl6035_i2c_write_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_mmc1_poweron_ldo(void);
+int twl6035_mmc1_poweron_ldo(void);