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Diffstat (limited to 'sound/pci/oxygen/hifier.c')
-rw-r--r--sound/pci/oxygen/hifier.c61
1 files changed, 38 insertions, 23 deletions
diff --git a/sound/pci/oxygen/hifier.c b/sound/pci/oxygen/hifier.c
index 84ef13183419..e3c229b63311 100644
--- a/sound/pci/oxygen/hifier.c
+++ b/sound/pci/oxygen/hifier.c
@@ -17,6 +17,12 @@
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
+/*
+ * CMI8788:
+ *
+ * SPI 0 -> AK4396
+ */
+
#include <linux/delay.h>
#include <linux/pci.h>
#include <sound/control.h>
@@ -51,23 +57,28 @@ static struct pci_device_id hifier_ids[] __devinitdata = {
MODULE_DEVICE_TABLE(pci, hifier_ids);
struct hifier_data {
- u8 ak4396_ctl2;
+ u8 ak4396_regs[5];
};
static void ak4396_write(struct oxygen *chip, u8 reg, u8 value)
{
+ struct hifier_data *data = chip->model_data;
+
oxygen_write_spi(chip, OXYGEN_SPI_TRIGGER |
OXYGEN_SPI_DATA_LENGTH_2 |
OXYGEN_SPI_CLOCK_160 |
(0 << OXYGEN_SPI_CODEC_SHIFT) |
OXYGEN_SPI_CEN_LATCH_CLOCK_HI,
AK4396_WRITE | (reg << 8) | value);
+ data->ak4396_regs[reg] = value;
}
-static void update_ak4396_volume(struct oxygen *chip)
+static void ak4396_write_cached(struct oxygen *chip, u8 reg, u8 value)
{
- ak4396_write(chip, AK4396_LCH_ATT, chip->dac_volume[0]);
- ak4396_write(chip, AK4396_RCH_ATT, chip->dac_volume[1]);
+ struct hifier_data *data = chip->model_data;
+
+ if (value != data->ak4396_regs[reg])
+ ak4396_write(chip, reg, value);
}
static void hifier_registers_init(struct oxygen *chip)
@@ -75,16 +86,19 @@ static void hifier_registers_init(struct oxygen *chip)
struct hifier_data *data = chip->model_data;
ak4396_write(chip, AK4396_CONTROL_1, AK4396_DIF_24_MSB | AK4396_RSTN);
- ak4396_write(chip, AK4396_CONTROL_2, data->ak4396_ctl2);
+ ak4396_write(chip, AK4396_CONTROL_2,
+ data->ak4396_regs[AK4396_CONTROL_2]);
ak4396_write(chip, AK4396_CONTROL_3, AK4396_PCM);
- update_ak4396_volume(chip);
+ ak4396_write(chip, AK4396_LCH_ATT, chip->dac_volume[0]);
+ ak4396_write(chip, AK4396_RCH_ATT, chip->dac_volume[1]);
}
static void hifier_init(struct oxygen *chip)
{
struct hifier_data *data = chip->model_data;
- data->ak4396_ctl2 = AK4396_SMUTE | AK4396_DEM_OFF | AK4396_DFS_NORMAL;
+ data->ak4396_regs[AK4396_CONTROL_2] =
+ AK4396_SMUTE | AK4396_DEM_OFF | AK4396_DFS_NORMAL;
hifier_registers_init(chip);
snd_component_add(chip->card, "AK4396");
@@ -106,20 +120,29 @@ static void set_ak4396_params(struct oxygen *chip,
struct hifier_data *data = chip->model_data;
u8 value;
- value = data->ak4396_ctl2 & ~AK4396_DFS_MASK;
+ value = data->ak4396_regs[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 */
- ak4396_write(chip, AK4396_CONTROL_1, AK4396_DIF_24_MSB);
- ak4396_write(chip, AK4396_CONTROL_2, value);
- ak4396_write(chip, AK4396_CONTROL_1, AK4396_DIF_24_MSB | AK4396_RSTN);
+ if (value != data->ak4396_regs[AK4396_CONTROL_2]) {
+ ak4396_write(chip, AK4396_CONTROL_1,
+ AK4396_DIF_24_MSB);
+ ak4396_write(chip, AK4396_CONTROL_2, value);
+ ak4396_write(chip, AK4396_CONTROL_1,
+ AK4396_DIF_24_MSB | AK4396_RSTN);
+ }
+}
+
+static void update_ak4396_volume(struct oxygen *chip)
+{
+ ak4396_write_cached(chip, AK4396_LCH_ATT, chip->dac_volume[0]);
+ ak4396_write_cached(chip, AK4396_RCH_ATT, chip->dac_volume[1]);
}
static void update_ak4396_mute(struct oxygen *chip)
@@ -127,11 +150,10 @@ static void update_ak4396_mute(struct oxygen *chip)
struct hifier_data *data = chip->model_data;
u8 value;
- value = data->ak4396_ctl2 & ~AK4396_SMUTE;
+ value = data->ak4396_regs[AK4396_CONTROL_2] & ~AK4396_SMUTE;
if (chip->dac_mute)
value |= AK4396_SMUTE;
- data->ak4396_ctl2 = value;
- ak4396_write(chip, AK4396_CONTROL_2, value);
+ ak4396_write_cached(chip, AK4396_CONTROL_2, value);
}
static void set_cs5340_params(struct oxygen *chip,
@@ -141,21 +163,14 @@ static void set_cs5340_params(struct oxygen *chip,
static const DECLARE_TLV_DB_LINEAR(ak4396_db_scale, TLV_DB_GAIN_MUTE, 0);
-static int hifier_control_filter(struct snd_kcontrol_new *template)
-{
- if (!strcmp(template->name, "Stereo Upmixing"))
- return 1; /* stereo only - we don't need upmixing */
- return 0;
-}
-
static const struct oxygen_model model_hifier = {
.shortname = "C-Media CMI8787",
.longname = "C-Media Oxygen HD Audio",
.chip = "CMI8788",
.init = hifier_init,
- .control_filter = hifier_control_filter,
.cleanup = hifier_cleanup,
.resume = hifier_resume,
+ .get_i2s_mclk = oxygen_default_i2s_mclk,
.set_dac_params = set_ak4396_params,
.set_adc_params = set_cs5340_params,
.update_dac_volume = update_ak4396_volume,