This adds default clock/PLL configuration to the driver for usage with generic drivers like simple-card for usage with a fixed rate clock.
Signed-off-by: Sebastian Reichel sebastian.reichel@collabora.com --- Changes since PATCHv3: * rebase to v5.8-rc1 * add SRM support for usage in slave mode with simple-card. I only tested with master mode, though. --- sound/soc/codecs/da7213.c | 83 ++++++++++++++++++++++++++++++++++++--- sound/soc/codecs/da7213.h | 2 + 2 files changed, 80 insertions(+), 5 deletions(-)
diff --git a/sound/soc/codecs/da7213.c b/sound/soc/codecs/da7213.c index 3e6ad996741b..1a4fece20bcd 100644 --- a/sound/soc/codecs/da7213.c +++ b/sound/soc/codecs/da7213.c @@ -1156,6 +1156,7 @@ static int da7213_hw_params(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) { struct snd_soc_component *component = dai->component; + struct da7213_priv *da7213 = snd_soc_component_get_drvdata(component); u8 dai_ctrl = 0; u8 fs;
@@ -1181,33 +1182,43 @@ static int da7213_hw_params(struct snd_pcm_substream *substream, switch (params_rate(params)) { case 8000: fs = DA7213_SR_8000; + da7213->out_rate = DA7213_PLL_FREQ_OUT_98304000; break; case 11025: fs = DA7213_SR_11025; + da7213->out_rate = DA7213_PLL_FREQ_OUT_90316800; break; case 12000: fs = DA7213_SR_12000; + da7213->out_rate = DA7213_PLL_FREQ_OUT_98304000; break; case 16000: fs = DA7213_SR_16000; + da7213->out_rate = DA7213_PLL_FREQ_OUT_98304000; break; case 22050: fs = DA7213_SR_22050; + da7213->out_rate = DA7213_PLL_FREQ_OUT_90316800; break; case 32000: fs = DA7213_SR_32000; + da7213->out_rate = DA7213_PLL_FREQ_OUT_98304000; break; case 44100: fs = DA7213_SR_44100; + da7213->out_rate = DA7213_PLL_FREQ_OUT_90316800; break; case 48000: fs = DA7213_SR_48000; + da7213->out_rate = DA7213_PLL_FREQ_OUT_98304000; break; case 88200: fs = DA7213_SR_88200; + da7213->out_rate = DA7213_PLL_FREQ_OUT_90316800; break; case 96000: fs = DA7213_SR_96000; + da7213->out_rate = DA7213_PLL_FREQ_OUT_98304000; break; default: return -EINVAL; @@ -1392,9 +1403,9 @@ static int da7213_set_component_sysclk(struct snd_soc_component *component, }
/* Supported PLL input frequencies are 32KHz, 5MHz - 54MHz. */ -static int da7213_set_component_pll(struct snd_soc_component *component, - int pll_id, int source, - unsigned int fref, unsigned int fout) +static int _da7213_set_component_pll(struct snd_soc_component *component, + int pll_id, int source, + unsigned int fref, unsigned int fout) { struct da7213_priv *da7213 = snd_soc_component_get_drvdata(component);
@@ -1503,6 +1514,16 @@ static int da7213_set_component_pll(struct snd_soc_component *component, return 0; }
+static int da7213_set_component_pll(struct snd_soc_component *component, + int pll_id, int source, + unsigned int fref, unsigned int fout) +{ + struct da7213_priv *da7213 = snd_soc_component_get_drvdata(component); + da7213->fixed_clk_auto_pll = false; + + return _da7213_set_component_pll(component, pll_id, source, fref, fout); +} + /* DAI operations */ static const struct snd_soc_dai_ops da7213_dai_ops = { .hw_params = da7213_hw_params, @@ -1532,6 +1553,50 @@ static struct snd_soc_dai_driver da7213_dai = { .symmetric_rates = 1, };
+static int da7213_set_auto_pll(struct snd_soc_component *component, bool enable) +{ + struct da7213_priv *da7213 = snd_soc_component_get_drvdata(component); + int mode; + + if (!da7213->fixed_clk_auto_pll) + return 0; + + da7213->mclk_rate = clk_get_rate(da7213->mclk); + + if (enable) { + /* Slave mode needs SRM for non-harmonic frequencies */ + if (da7213->master) + mode = DA7213_SYSCLK_PLL; + else + mode = DA7213_SYSCLK_PLL_SRM; + + /* PLL is not required for harmonic frequencies */ + switch (da7213->out_rate) { + case DA7213_PLL_FREQ_OUT_90316800: + if (da7213->mclk_rate == 11289600 || + da7213->mclk_rate == 22579200 || + da7213->mclk_rate == 45158400) + mode = DA7213_SYSCLK_MCLK; + break; + case DA7213_PLL_FREQ_OUT_98304000: + if (da7213->mclk_rate == 12288000 || + da7213->mclk_rate == 24576000 || + da7213->mclk_rate == 49152000) + mode = DA7213_SYSCLK_MCLK; + + break; + default: + return -1; + } + } else { + /* Disable PLL in standby */ + mode = DA7213_SYSCLK_MCLK; + } + + return _da7213_set_component_pll(component, 0, mode, + da7213->mclk_rate, da7213->out_rate); +} + static int da7213_set_bias_level(struct snd_soc_component *component, enum snd_soc_bias_level level) { @@ -1551,6 +1616,8 @@ static int da7213_set_bias_level(struct snd_soc_component *component, "Failed to enable mclk\n"); return ret; } + + da7213_set_auto_pll(component, true); } } break; @@ -1562,8 +1629,10 @@ static int da7213_set_bias_level(struct snd_soc_component *component, DA7213_VMID_EN | DA7213_BIAS_EN); } else { /* Remove MCLK */ - if (da7213->mclk) + if (da7213->mclk) { + da7213_set_auto_pll(component, false); clk_disable_unprepare(da7213->mclk); + } } break; case SND_SOC_BIAS_OFF: @@ -1693,7 +1762,6 @@ static struct da7213_platform_data return pdata; }
- static int da7213_probe(struct snd_soc_component *component) { struct da7213_priv *da7213 = snd_soc_component_get_drvdata(component); @@ -1829,6 +1897,11 @@ static int da7213_probe(struct snd_soc_component *component) return PTR_ERR(da7213->mclk); else da7213->mclk = NULL; + } else { + /* Do automatic PLL handling assuming fixed clock until + * set_pll() has been called. This makes the codec usable + * with the simple-audio-card driver. */ + da7213->fixed_clk_auto_pll = true; }
return 0; diff --git a/sound/soc/codecs/da7213.h b/sound/soc/codecs/da7213.h index 3890829dfb6e..97ccf0ddd2be 100644 --- a/sound/soc/codecs/da7213.h +++ b/sound/soc/codecs/da7213.h @@ -535,10 +535,12 @@ struct da7213_priv { struct regulator_bulk_data supplies[DA7213_NUM_SUPPLIES]; struct clk *mclk; unsigned int mclk_rate; + unsigned int out_rate; int clk_src; bool master; bool alc_calib_auto; bool alc_en; + bool fixed_clk_auto_pll; struct da7213_platform_data *pdata; };