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 */