* [PATCH 2/2] ASoC: sta350: add support for bits in miscellaneous registers
2014-05-05 9:49 [PATCH 1/2] ASoC: sta350: fix DT bindings document Daniel Mack
@ 2014-05-05 9:49 ` Daniel Mack
2014-05-05 19:55 ` Mark Brown
2014-05-05 19:52 ` [PATCH 1/2] ASoC: sta350: fix DT bindings document Mark Brown
1 sibling, 1 reply; 4+ messages in thread
From: Daniel Mack @ 2014-05-05 9:49 UTC (permalink / raw)
To: broonie, alsa-devel; +Cc: Daniel Mack
Add support for RPDNEN, NSHHPEN, BRIDGOFF, CPWMEN and PNDLSL, and add DT
bindings to access them.
Signed-off-by: Daniel Mack <zonque@gmail.com>
---
.../devicetree/bindings/sound/st,sta350.txt | 24 +++++++++++-
include/sound/sta350.h | 5 +++
sound/soc/codecs/sta350.c | 45 ++++++++++++++++++++++
sound/soc/codecs/sta350.h | 10 +++++
4 files changed, 83 insertions(+), 1 deletion(-)
diff --git a/Documentation/devicetree/bindings/sound/st,sta350.txt b/Documentation/devicetree/bindings/sound/st,sta350.txt
index ecd7a62..b7e71bf 100644
--- a/Documentation/devicetree/bindings/sound/st,sta350.txt
+++ b/Documentation/devicetree/bindings/sound/st,sta350.txt
@@ -86,7 +86,29 @@ Optional properties:
- st,invalid-input-detect-mute:
If present, automatic invalid input detect mute is enabled.
-
+ - st,activate-mute-output:
+ If present, a mute output will be activated in ase the volume will
+ reach a value lower than -76 dBFS.
+
+ - st,bridge-immediate-off:
+ If present, the bridge will be switched off immediately after the
+ power-down-gpio goes low. Otherwise, the bridge will wait for 13
+ million clock cycles to pass before shutting down.
+
+ - st,noise-shape-dc-cut:
+ If present, the noise-shaping technique on the DC cutoff filter are
+ enabled.
+
+ - st,powerdown-master-volume:
+ If present, the power-down pin and I2C power-down functions will
+ act on the master volume. Otherwise, the functions will act on the
+ mute commands.
+
+ - st,powerdown-delay-divider:
+ If present, the bridge power-down time will be divided by the provided
+ value. If not specified, a divider of 1 will be used. Allowed values
+ are 1, 2, 4, 8, 16, 32, 64 and 128.
+ This property has to be specified as '/bits/ 8' value.
Example:
diff --git a/include/sound/sta350.h b/include/sound/sta350.h
index 3a329810..42edceb 100644
--- a/include/sound/sta350.h
+++ b/include/sound/sta350.h
@@ -37,6 +37,7 @@ struct sta350_platform_data {
u8 ch3_output_mapping;
u8 ffx_power_output_mode;
u8 drop_compensation_ns;
+ u8 powerdown_delay_divider;
unsigned int thermal_warning_recovery:1;
unsigned int thermal_warning_adjustment:1;
unsigned int fault_detect_recovery:1;
@@ -47,6 +48,10 @@ struct sta350_platform_data {
unsigned int odd_pwm_speed_mode:1;
unsigned int distortion_compensation:1;
unsigned int invalid_input_detect_mute:1;
+ unsigned int activate_mute_output:1;
+ unsigned int bridge_immediate_off:1;
+ unsigned int noise_shape_dc_cut:1;
+ unsigned int powerdown_master_vol:1;
};
#endif /* __LINUX_SND__STA350_H */
diff --git a/sound/soc/codecs/sta350.c b/sound/soc/codecs/sta350.c
index 552e92a..2353a54 100644
--- a/sound/soc/codecs/sta350.c
+++ b/sound/soc/codecs/sta350.c
@@ -1020,6 +1020,29 @@ static int sta350_probe(struct snd_soc_codec *codec)
pdata->ch3_output_mapping
<< STA350_CxCFG_OM_SHIFT);
+ /* miscellaneous registers */
+ regmap_update_bits(sta350->regmap, STA350_MISC1,
+ STA350_MISC1_CPWMEN,
+ pdata->activate_mute_output ?
+ STA350_MISC1_CPWMEN : 0);
+ regmap_update_bits(sta350->regmap, STA350_MISC1,
+ STA350_MISC1_BRIDGOFF,
+ pdata->bridge_immediate_off ?
+ STA350_MISC1_BRIDGOFF : 0);
+ regmap_update_bits(sta350->regmap, STA350_MISC1,
+ STA350_MISC1_NSHHPEN,
+ pdata->noise_shape_dc_cut ?
+ STA350_MISC1_NSHHPEN : 0);
+ regmap_update_bits(sta350->regmap, STA350_MISC1,
+ STA350_MISC1_RPDNEN,
+ pdata->powerdown_master_vol ?
+ STA350_MISC1_RPDNEN: 0);
+
+ regmap_update_bits(sta350->regmap, STA350_MISC2,
+ STA350_MISC2_PNDLSL_MASK,
+ pdata->powerdown_delay_divider
+ << STA350_MISC2_PNDLSL_SHIFT);
+
/* initialize coefficient shadow RAM with reset values */
for (i = 4; i <= 49; i += 5)
sta350->coef_shadow[i] = 0x400000;
@@ -1094,6 +1117,7 @@ static int sta350_probe_dt(struct device *dev, struct sta350_priv *sta350)
struct sta350_platform_data *pdata;
const char *ffx_power_mode;
u16 tmp;
+ u8 tmp8;
pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
if (!pdata)
@@ -1158,6 +1182,27 @@ static int sta350_probe_dt(struct device *dev, struct sta350_priv *sta350)
if (of_get_property(np, "st,invalid-input-detect-mute", NULL))
pdata->invalid_input_detect_mute = 1;
+ /* MISC */
+ if (of_get_property(np, "st,activate-mute-output", NULL))
+ pdata->activate_mute_output = 1;
+
+ if (of_get_property(np, "st,bridge-immediate-off", NULL))
+ pdata->bridge_immediate_off = 1;
+
+ if (of_get_property(np, "st,noise-shape-dc-cut", NULL))
+ pdata->noise_shape_dc_cut = 1;
+
+ if (of_get_property(np, "st,powerdown-master-volume", NULL))
+ pdata->powerdown_master_vol = 1;
+
+ if (!of_property_read_u8(np, "st,powerdown-delay-divider", &tmp8)) {
+ if (is_power_of_2(tmp8) && tmp8 >= 1 && tmp8 <= 128)
+ pdata->powerdown_delay_divider = ilog2(tmp8);
+ else
+ dev_warn(dev, "Unsupported powerdown delay divider %d\n",
+ tmp8);
+ }
+
sta350->pdata = pdata;
return 0;
diff --git a/sound/soc/codecs/sta350.h b/sound/soc/codecs/sta350.h
index c3248f0..fb72852 100644
--- a/sound/soc/codecs/sta350.h
+++ b/sound/soc/codecs/sta350.h
@@ -225,4 +225,14 @@
#define STA350_C3_MIX1 60
#define STA350_C3_MIX2 61
+/* miscellaneous register 1 */
+#define STA350_MISC1_CPWMEN BIT(2)
+#define STA350_MISC1_BRIDGOFF BIT(5)
+#define STA350_MISC1_NSHHPEN BIT(6)
+#define STA350_MISC1_RPDNEN BIT(7)
+
+/* miscellaneous register 2 */
+#define STA350_MISC2_PNDLSL_MASK 0x1c
+#define STA350_MISC2_PNDLSL_SHIFT 2
+
#endif /* _ASOC_STA_350_H */
--
1.9.0
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