From: Joonyoung Shim Date: Thu, 23 Jul 2009 08:33:17 +0000 (+0900) Subject: ASoC: MAX9877: fix write operation for register X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=a7569afa8b79ca9272b0d7544335bc05b5b721d6;p=GitHub%2FLineageOS%2Fandroid_kernel_samsung_universal7580.git ASoC: MAX9877: fix write operation for register The MAX9877 needs an address of start register when we write values to registers through i2c_master_send(), but the code for this was missed in max9877_write_regs(). If the value of control is 0 in the max9877_set_out_mode(), the value is not increased to 1, but actually the value to write to the register should be 1. And the register bits for out_mode and osc_mode should be cleared before writing. Signed-off-by: Joonyoung Shim Signed-off-by: Mark Brown --- diff --git a/sound/soc/codecs/max9877.c b/sound/soc/codecs/max9877.c index a1f1119e1b7..9e7e964a5fa 100644 --- a/sound/soc/codecs/max9877.c +++ b/sound/soc/codecs/max9877.c @@ -25,7 +25,14 @@ static u8 max9877_regs[5] = { 0x40, 0x00, 0x00, 0x00, 0x49 }; static void max9877_write_regs(void) { - if (i2c_master_send(i2c, max9877_regs, 5) != 5) + unsigned int i; + u8 data[6]; + + data[0] = MAX9877_INPUT_MODE; + for (i = 0; i < ARRAY_SIZE(max9877_regs); i++) + data[i + 1] = max9877_regs[i]; + + if (i2c_master_send(i2c, data, 6) != 6) dev_err(&i2c->dev, "i2c write failed\n"); } @@ -135,12 +142,12 @@ static int max9877_set_out_mode(struct snd_kcontrol *kcontrol, { u8 value = ucontrol->value.integer.value[0]; - if (value) - value += 1; + value += 1; if ((max9877_regs[MAX9877_OUTPUT_MODE] & MAX9877_OUTMODE_MASK) == value) return 0; + max9877_regs[MAX9877_OUTPUT_MODE] &= ~MAX9877_OUTMODE_MASK; max9877_regs[MAX9877_OUTPUT_MODE] |= value; max9877_write_regs(); return 1; @@ -166,6 +173,7 @@ static int max9877_set_osc_mode(struct snd_kcontrol *kcontrol, if ((max9877_regs[MAX9877_OUTPUT_MODE] & MAX9877_OSC_MASK) == value) return 0; + max9877_regs[MAX9877_OUTPUT_MODE] &= ~MAX9877_OSC_MASK; max9877_regs[MAX9877_OUTPUT_MODE] |= value; max9877_write_regs(); return 1;