Mark On 07/21/2014 06:54 AM, Mark Brown wrote:
On Fri, Jul 18, 2014 at 12:31:08PM -0500, Dan Murphy wrote:
+static int tas2552_class_d_en(struct snd_soc_dapm_widget *w, + struct snd_kcontrol *kcontrol, int event) +{ + switch (event) { + case SND_SOC_DAPM_PRE_PMU: + snd_soc_update_bits(w->codec, TAS2552_CFG_2, + TAS2552_CLASSD_EN_MASK, TAS2552_CLASSD_EN_MASK); + break; + case SND_SOC_DAPM_POST_PMD: + snd_soc_update_bits(w->codec, TAS2552_CFG_2, + TAS2552_CLASSD_EN_MASK, 0); + break; + } + + return 0; +} + +static const struct snd_soc_dapm_widget tas2552_dapm_widgets[] = +{ +SND_SOC_DAPM_PRE("Class D Enable", tas2552_class_d_en), +SND_SOC_DAPM_POST("Class D Disable", tas2552_class_d_en), +SND_SOC_DAPM_POST("PLL Disable", tas2552_pll_disable), +};
This seems broken, having to use _PRE or _POST widgets for simple register writes (or almost anything really) should never be required and error prone - what is this actually trying to do? I'd expect the class D to be a PGA or OUTPUT widget and the PLL to be a SUPPLY widget.
I need a little help here. I am not seeing the PLL being disabled or Class D being disabled when I am using the DAPM calls
My implementation is like this. And I use set these widgets and audio map in the call back functions in the struct snd_soc_codec_driver.
When I look at the registers after stream playback I see that the TAS2552_CFG_2 register is untouched
static const struct snd_soc_dapm_widget tas2552_dapm_widgets[] = { SND_SOC_DAPM_AIF_IN("DAC IN", NULL, 0, SND_SOC_NOPM, 0, 0), SND_SOC_DAPM_DAC("DAC", NULL, SND_SOC_NOPM, 0, 0), SND_SOC_DAPM_OUT_DRV("ClassD Enable", TAS2552_CFG_2, 7, 0, NULL, 0), SND_SOC_DAPM_OUT_DRV("ClassD Disable", TAS2552_CFG_2, 7, 1, NULL, 0), SND_SOC_DAPM_SUPPLY("PLL Disable", TAS2552_CFG_2, 3, 1, NULL, 0), SND_SOC_DAPM_OUTPUT("OUT") };
static const struct snd_soc_dapm_route tas2552_audio_map[] = { {"DAC", NULL, "DAC IN"}, {"ClassD Enable", NULL, "DAC"}, {"OUT", NULL, "ClassD Enable"}, {"ClassD Disable", NULL, "OUT"}, {"PLL Disable", NULL, "ClassD Disable"} };
Any information would help here
Thanks in advance
-- ------------------ Dan Murphy