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sound: oxygen: cache codec registers

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Keep a cache of codec registers to avoid unnecessary writes.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Clemens Ladisch
2009-09-28 11:18:45 +02:00
committed by Takashi Iwai
parent dc0adf48da
commit 6f0de3ce06
4 changed files with 258 additions and 160 deletions
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107
sound/pci/oxygen/oxygen.c
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@@ -97,8 +97,8 @@ MODULE_DEVICE_TABLE(pci, oxygen_ids);
#define GPIO_CLARO_HP 0x0100
struct generic_data {
u8 ak4396_ctl2;
u16 saved_wm8785_registers[2];
u8 ak4396_regs[4][5];
u16 wm8785_regs[1];
};
static void ak4396_write(struct oxygen *chip, unsigned int codec,
@@ -108,12 +108,24 @@ static void ak4396_write(struct oxygen *chip, unsigned int codec,
static const u8 codec_spi_map[4] = {
0, 1, 2, 4
};
struct generic_data *data = chip->model_data;
oxygen_write_spi(chip, OXYGEN_SPI_TRIGGER |
OXYGEN_SPI_DATA_LENGTH_2 |
OXYGEN_SPI_CLOCK_160 |
(codec_spi_map[codec] << OXYGEN_SPI_CODEC_SHIFT) |
OXYGEN_SPI_CEN_LATCH_CLOCK_HI,
AK4396_WRITE | (reg << 8) | value);
data->ak4396_regs[codec][reg] = value;
}
static void ak4396_write_cached(struct oxygen *chip, unsigned int codec,
u8 reg, u8 value)
{
struct generic_data *data = chip->model_data;
if (value != data->ak4396_regs[codec][reg])
ak4396_write(chip, codec, reg, value);
}
static void wm8785_write(struct oxygen *chip, u8 reg, unsigned int value)
@@ -126,20 +138,8 @@ static void wm8785_write(struct oxygen *chip, u8 reg, unsigned int value)
(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 update_ak4396_volume(struct oxygen *chip)
{
unsigned int i;
for (i = 0; i < 4; ++i) {
ak4396_write(chip, i,
AK4396_LCH_ATT, chip->dac_volume[i * 2]);
ak4396_write(chip, i,
AK4396_RCH_ATT, chip->dac_volume[i * 2 + 1]);
}
if (reg < ARRAY_SIZE(data->wm8785_regs))
data->wm8785_regs[reg] = value;
}
static void ak4396_registers_init(struct oxygen *chip)
@@ -148,21 +148,25 @@ static void ak4396_registers_init(struct oxygen *chip)
unsigned int i;
for (i = 0; i < 4; ++i) {
ak4396_write(chip, i,
AK4396_CONTROL_1, AK4396_DIF_24_MSB | AK4396_RSTN);
ak4396_write(chip, i,
AK4396_CONTROL_2, data->ak4396_ctl2);
ak4396_write(chip, i,
AK4396_CONTROL_3, AK4396_PCM);
ak4396_write(chip, i, AK4396_CONTROL_1,
AK4396_DIF_24_MSB | AK4396_RSTN);
ak4396_write(chip, i, AK4396_CONTROL_2,
data->ak4396_regs[0][AK4396_CONTROL_2]);
ak4396_write(chip, i, AK4396_CONTROL_3,
AK4396_PCM);
ak4396_write(chip, i, AK4396_LCH_ATT,
chip->dac_volume[i * 2]);
ak4396_write(chip, i, AK4396_RCH_ATT,
chip->dac_volume[i * 2 + 1]);
}
update_ak4396_volume(chip);
}
static void ak4396_init(struct oxygen *chip)
{
struct generic_data *data = chip->model_data;
data->ak4396_ctl2 = AK4396_SMUTE | AK4396_DEM_OFF | AK4396_DFS_NORMAL;
data->ak4396_regs[0][AK4396_CONTROL_2] =
AK4396_SMUTE | AK4396_DEM_OFF | AK4396_DFS_NORMAL;
ak4396_registers_init(chip);
snd_component_add(chip->card, "AK4396");
}
@@ -179,17 +183,15 @@ static void wm8785_registers_init(struct oxygen *chip)
struct generic_data *data = chip->model_data;
wm8785_write(chip, WM8785_R7, 0);
wm8785_write(chip, WM8785_R0, data->saved_wm8785_registers[0]);
wm8785_write(chip, WM8785_R1, data->saved_wm8785_registers[1]);
wm8785_write(chip, WM8785_R0, data->wm8785_regs[0]);
}
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;
data->wm8785_regs[0] =
WM8785_MCR_SLAVE | WM8785_OSR_SINGLE | WM8785_FORMAT_LJUST;
wm8785_registers_init(chip);
snd_component_add(chip->card, "WM8785");
}
@@ -270,24 +272,36 @@ static void set_ak4396_params(struct oxygen *chip,
unsigned int i;
u8 value;
value = data->ak4396_ctl2 & ~AK4396_DFS_MASK;
value = data->ak4396_regs[0][AK4396_CONTROL_2] & ~AK4396_DFS_MASK;
if (params_rate(params) <= 54000)
value |= AK4396_DFS_NORMAL;
else if (params_rate(params) <= 108000)
value |= AK4396_DFS_DOUBLE;
else
value |= AK4396_DFS_QUAD;
data->ak4396_ctl2 = value;
msleep(1); /* wait for the new MCLK to become stable */
if (value != data->ak4396_regs[0][AK4396_CONTROL_2]) {
for (i = 0; i < 4; ++i) {
ak4396_write(chip, i, AK4396_CONTROL_1,
AK4396_DIF_24_MSB);
ak4396_write(chip, i, AK4396_CONTROL_2, value);
ak4396_write(chip, i, AK4396_CONTROL_1,
AK4396_DIF_24_MSB | AK4396_RSTN);
}
}
}
static void update_ak4396_volume(struct oxygen *chip)
{
unsigned int i;
for (i = 0; i < 4; ++i) {
ak4396_write(chip, i,
AK4396_CONTROL_1, AK4396_DIF_24_MSB);
ak4396_write(chip, i,
AK4396_CONTROL_2, value);
ak4396_write(chip, i,
AK4396_CONTROL_1, AK4396_DIF_24_MSB | AK4396_RSTN);
ak4396_write_cached(chip, i, AK4396_LCH_ATT,
chip->dac_volume[i * 2]);
ak4396_write_cached(chip, i, AK4396_RCH_ATT,
chip->dac_volume[i * 2 + 1]);
}
}
@@ -297,21 +311,19 @@ static void update_ak4396_mute(struct oxygen *chip)
unsigned int i;
u8 value;
value = data->ak4396_ctl2 & ~AK4396_SMUTE;
value = data->ak4396_regs[0][AK4396_CONTROL_2] & ~AK4396_SMUTE;
if (chip->dac_mute)
value |= AK4396_SMUTE;
data->ak4396_ctl2 = value;
for (i = 0; i < 4; ++i)
ak4396_write(chip, i, AK4396_CONTROL_2, value);
ak4396_write_cached(chip, i, AK4396_CONTROL_2, value);
}
static void set_wm8785_params(struct oxygen *chip,
struct snd_pcm_hw_params *params)
{
struct generic_data *data = chip->model_data;
unsigned int value;
wm8785_write(chip, WM8785_R7, 0);
value = WM8785_MCR_SLAVE | WM8785_FORMAT_LJUST;
if (params_rate(params) <= 48000)
value |= WM8785_OSR_SINGLE;
@@ -319,13 +331,10 @@ static void set_wm8785_params(struct oxygen *chip,
value |= WM8785_OSR_DOUBLE;
else
value |= WM8785_OSR_QUAD;
wm8785_write(chip, WM8785_R0, value);
if (snd_pcm_format_width(params_format(params)) <= 16)
value = WM8785_WL_16;
else
value = WM8785_WL_24;
wm8785_write(chip, WM8785_R1, value);
if (value != data->wm8785_regs[0]) {
wm8785_write(chip, WM8785_R7, 0);
wm8785_write(chip, WM8785_R0, value);
}
}
static void set_ak5385_params(struct oxygen *chip,