xiaomi-sm8450/android_kernel_xiaomi_sm8450
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[ALSA] oxygen: save register writes

瀏覽代碼 
Save the written values of all CMI8788 and AC97 registers and of some of
the DAC/ADC registers so that it is possible to restore the register
state later.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
This commit is contained in:
Clemens Ladisch
2008-05-13 09:20:51 +02:00
committed by Jaroslav Kysela
父節點 c13650079b
當前提交 e58aee9580
共有 4 個文件被更改，包括 67 次插入 和 32 次删除
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17
sound/pci/oxygen/oxygen.c
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@@ -80,6 +80,7 @@ MODULE_DEVICE_TABLE(pci, oxygen_ids);
struct generic_data {
u8 ak4396_ctl2;
u16 saved_wm8785_registers[2];
};
static void ak4396_write(struct oxygen *chip, unsigned int codec,
@@ -99,12 +100,16 @@ static void ak4396_write(struct oxygen *chip, unsigned int codec,
static void wm8785_write(struct oxygen *chip, u8 reg, unsigned int value)
{
struct generic_data *data = chip->model_data;
oxygen_write_spi(chip, OXYGEN_SPI_TRIGGER |
OXYGEN_SPI_DATA_LENGTH_2 |
OXYGEN_SPI_CLOCK_160 |
(3 << OXYGEN_SPI_CODEC_SHIFT) |
OXYGEN_SPI_CEN_LATCH_CLOCK_LO,
(reg << 9) | value);
if (reg < ARRAY_SIZE(data->saved_wm8785_registers))
data->saved_wm8785_registers[reg] = value;
}
static void ak4396_init(struct oxygen *chip)
@@ -135,10 +140,16 @@ static void ak5385_init(struct oxygen *chip)
static void wm8785_init(struct oxygen *chip)
{
struct generic_data *data = chip->model_data;
data->saved_wm8785_registers[0] = WM8785_MCR_SLAVE |
WM8785_OSR_SINGLE | WM8785_FORMAT_LJUST;
data->saved_wm8785_registers[1] = WM8785_WL_24;
wm8785_write(chip, WM8785_R7, 0);
wm8785_write(chip, WM8785_R0, WM8785_MCR_SLAVE |
WM8785_OSR_SINGLE | WM8785_FORMAT_LJUST);
wm8785_write(chip, WM8785_R1, WM8785_WL_24);
wm8785_write(chip, WM8785_R0, data->saved_wm8785_registers[0]);
wm8785_write(chip, WM8785_R1, data->saved_wm8785_registers[1]);
snd_component_add(chip->card, "WM8785");
}