From: Shuming Fan <shumingf@xxxxxxxxxxx>
It will be safe when getting the calibration params after power-on.
All powers are ready to read the calibration params from EFUSE.
Signed-off-by: Shuming Fan <shumingf@xxxxxxxxxxx>
---
sound/soc/codecs/rt1308-sdw.c | 73 +++++++++++++++++++----------------
1 file changed, 40 insertions(+), 33 deletions(-)
diff --git a/sound/soc/codecs/rt1308-sdw.c b/sound/soc/codecs/rt1308-sdw.c
index 149a76075c76..1ef836a68a56 100644
--- a/sound/soc/codecs/rt1308-sdw.c
+++ b/sound/soc/codecs/rt1308-sdw.c
@@ -50,6 +50,8 @@ static bool rt1308_volatile_register(struct device *dev, unsigned int reg)
case 0x3008:
case 0x300a:
case 0xc000:
+ case 0xc860 ... 0xc863:
+ case 0xc870 ... 0xc873:
return true;
default:
return false;
@@ -159,12 +161,45 @@ static int rt1308_read_prop(struct sdw_slave *slave)
return 0;
}
+static void rt1308_apply_calib_params(struct rt1308_sdw_priv *rt1308)
+{
+ unsigned int efuse_m_btl_l, efuse_m_btl_r, tmp;
+ unsigned int efuse_c_btl_l, efuse_c_btl_r;
+
+ /* read efuse to apply calibration parameters */
+ regmap_write(rt1308->regmap, 0xc7f0, 0x04);
+ regmap_write(rt1308->regmap, 0xc7f1, 0xfe);
+ msleep(100);
+ regmap_write(rt1308->regmap, 0xc7f0, 0x44);
+ msleep(20);
+ regmap_write(rt1308->regmap, 0xc240, 0x10);
+
+ regmap_read(rt1308->regmap, 0xc861, &tmp);
+ efuse_m_btl_l = tmp;
+ regmap_read(rt1308->regmap, 0xc860, &tmp);
+ efuse_m_btl_l = efuse_m_btl_l | (tmp << 8);
+ regmap_read(rt1308->regmap, 0xc863, &tmp);
+ efuse_c_btl_l = tmp;
+ regmap_read(rt1308->regmap, 0xc862, &tmp);
+ efuse_c_btl_l = efuse_c_btl_l | (tmp << 8);
+ regmap_read(rt1308->regmap, 0xc871, &tmp);
+ efuse_m_btl_r = tmp;
+ regmap_read(rt1308->regmap, 0xc870, &tmp);
+ efuse_m_btl_r = efuse_m_btl_r | (tmp << 8);
+ regmap_read(rt1308->regmap, 0xc873, &tmp);
+ efuse_c_btl_r = tmp;
+ regmap_read(rt1308->regmap, 0xc872, &tmp);
+ efuse_c_btl_r = efuse_c_btl_r | (tmp << 8);
+ dev_dbg(&rt1308->sdw_slave->dev, "%s m_btl_l=0x%x, m_btl_r=0x%x\n", __func__,
+ efuse_m_btl_l, efuse_m_btl_r);
+ dev_dbg(&rt1308->sdw_slave->dev, "%s c_btl_l=0x%x, c_btl_r=0x%x\n", __func__,
+ efuse_c_btl_l, efuse_c_btl_r);
+}
+
static int rt1308_io_init(struct device *dev, struct sdw_slave *slave)
{
struct rt1308_sdw_priv *rt1308 = dev_get_drvdata(dev);
int ret = 0;
- unsigned int efuse_m_btl_l, efuse_m_btl_r, tmp;
- unsigned int efuse_c_btl_l, efuse_c_btl_r;
if (rt1308->hw_init)
return 0;
@@ -196,37 +231,6 @@ static int rt1308_io_init(struct device *dev, struct sdw_slave *slave)
/* sw reset */
regmap_write(rt1308->regmap, RT1308_SDW_RESET, 0);
- /* read efuse */
- regmap_write(rt1308->regmap, 0xc360, 0x01);
- regmap_write(rt1308->regmap, 0xc361, 0x80);
- regmap_write(rt1308->regmap, 0xc7f0, 0x04);
- regmap_write(rt1308->regmap, 0xc7f1, 0xfe);
- msleep(100);
- regmap_write(rt1308->regmap, 0xc7f0, 0x44);
- msleep(20);
- regmap_write(rt1308->regmap, 0xc240, 0x10);
-
- regmap_read(rt1308->regmap, 0xc861, &tmp);
- efuse_m_btl_l = tmp;
- regmap_read(rt1308->regmap, 0xc860, &tmp);
- efuse_m_btl_l = efuse_m_btl_l | (tmp << 8);
- regmap_read(rt1308->regmap, 0xc863, &tmp);
- efuse_c_btl_l = tmp;
- regmap_read(rt1308->regmap, 0xc862, &tmp);
- efuse_c_btl_l = efuse_c_btl_l | (tmp << 8);
- regmap_read(rt1308->regmap, 0xc871, &tmp);
- efuse_m_btl_r = tmp;
- regmap_read(rt1308->regmap, 0xc870, &tmp);
- efuse_m_btl_r = efuse_m_btl_r | (tmp << 8);
- regmap_read(rt1308->regmap, 0xc873, &tmp);
- efuse_c_btl_r = tmp;
- regmap_read(rt1308->regmap, 0xc872, &tmp);
- efuse_c_btl_r = efuse_c_btl_r | (tmp << 8);
- dev_dbg(&slave->dev, "%s m_btl_l=0x%x, m_btl_r=0x%x\n", __func__,
- efuse_m_btl_l, efuse_m_btl_r);
- dev_dbg(&slave->dev, "%s c_btl_l=0x%x, c_btl_r=0x%x\n", __func__,
- efuse_c_btl_l, efuse_c_btl_r);
-
/* initial settings */
regmap_write(rt1308->regmap, 0xc103, 0xc0);
regmap_write(rt1308->regmap, 0xc030, 0x17);
@@ -323,6 +327,8 @@ static int rt1308_classd_event(struct snd_soc_dapm_widget *w,
{
struct snd_soc_component *component =
snd_soc_dapm_to_component(w->dapm);
+ struct rt1308_sdw_priv *rt1308 =
+ snd_soc_component_get_drvdata(component);
switch (event) {
case SND_SOC_DAPM_POST_PMU:
@@ -331,6 +337,7 @@ static int rt1308_classd_event(struct snd_soc_dapm_widget *w,
RT1308_SDW_OFFSET | (RT1308_POWER_STATUS << 4),
0x3, 0x3);
msleep(40);
+ rt1308_apply_calib_params(rt1308);
break;
case SND_SOC_DAPM_PRE_PMD:
snd_soc_component_update_bits(component,
--
2.35.1
