This adds support for most regulators of da7212 for improved power management. The only thing skipped was the speaker supply, which has some undocumented dependencies. It's supposed to be either always-enabled or always-disabled.

Reviewed-by: Adam Thomson Adam.Thomson.Opensource@diasemi.com Signed-off-by: Sebastian Reichel sebastian.reichel@collabora.com --- .../devicetree/bindings/sound/da7213.txt | 4 + sound/soc/codecs/da7213.c | 79 ++++++++++++++++++- sound/soc/codecs/da7213.h | 9 +++ 3 files changed, 91 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/sound/da7213.txt b/Documentation/devicetree/bindings/sound/da7213.txt index 69ed23b25e25..94584c96c4ae 100644 --- a/Documentation/devicetree/bindings/sound/da7213.txt +++ b/Documentation/devicetree/bindings/sound/da7213.txt @@ -21,6 +21,10 @@ Optional properties: - dlg,dmic-clkrate : DMIC clock frequency (Hz). [<1500000>, <3000000>]

+ - VDDA-supply : Regulator phandle for Analogue power supply + - VDDMIC-supply : Regulator phandle for Mic Bias + - VDDIO-supply : Regulator phandle for I/O power supply + ======

Example: diff --git a/sound/soc/codecs/da7213.c b/sound/soc/codecs/da7213.c index aff306bb58df..0359249118d0 100644 --- a/sound/soc/codecs/da7213.c +++ b/sound/soc/codecs/da7213.c @@ -19,6 +19,7 @@ #include <linux/module.h> #include <sound/pcm.h> #include <sound/pcm_params.h> +#include <linux/pm_runtime.h> #include <sound/soc.h> #include <sound/initval.h> #include <sound/tlv.h> @@ -806,6 +807,11 @@ static int da7213_dai_event(struct snd_soc_dapm_widget *w, */

static const struct snd_soc_dapm_widget da7213_dapm_widgets[] = { + /* + * Power Supply + */ + SND_SOC_DAPM_REGULATOR_SUPPLY("VDDMIC", 0, 0), + /* * Input & Output */ @@ -932,6 +938,9 @@ static const struct snd_soc_dapm_route da7213_audio_map[] = { /* Dest Connecting Widget source */

/* Input path */ + {"Mic Bias 1", NULL, "VDDMIC"}, + {"Mic Bias 2", NULL, "VDDMIC"}, + {"MIC1", NULL, "Mic Bias 1"}, {"MIC2", NULL, "Mic Bias 2"},

@@ -1691,6 +1700,8 @@ static int da7213_probe(struct snd_soc_component *component) { struct da7213_priv *da7213 = snd_soc_component_get_drvdata(component);

+ pm_runtime_get_sync(component->dev); + /* Default to using ALC auto offset calibration mode. */ snd_soc_component_update_bits(component, DA7213_ALC_CTRL1, DA7213_ALC_CALIB_MODE_MAN, 0); @@ -1811,6 +1822,8 @@ static int da7213_probe(struct snd_soc_component *component) DA7213_DMIC_CLK_RATE_MASK, dmic_cfg); }

+ pm_runtime_put_sync(component->dev); + /* Check if MCLK provided */ da7213->mclk = devm_clk_get(component->dev, "mclk"); if (IS_ERR(da7213->mclk)) { @@ -1848,11 +1861,22 @@ static const struct regmap_config da7213_regmap_config = { .cache_type = REGCACHE_RBTREE, };

+static void da7213_power_off(void *data) +{ + struct da7213_priv *da7213 = data; + regulator_bulk_disable(DA7213_NUM_SUPPLIES, da7213->supplies); +} + +static const char *da7213_supply_names[DA7213_NUM_SUPPLIES] = { + [DA7213_SUPPLY_VDDA] = "VDDA", + [DA7213_SUPPLY_VDDIO] = "VDDIO", +}; + static int da7213_i2c_probe(struct i2c_client *i2c, const struct i2c_device_id *id) { struct da7213_priv *da7213; - int ret; + int i, ret;

da7213 = devm_kzalloc(&i2c->dev, sizeof(*da7213), GFP_KERNEL); if (!da7213) @@ -1860,6 +1884,25 @@ static int da7213_i2c_probe(struct i2c_client *i2c,

i2c_set_clientdata(i2c, da7213);

+ /* Get required supplies */ + for (i = 0; i < DA7213_NUM_SUPPLIES; ++i) + da7213->supplies[i].supply = da7213_supply_names[i]; + + ret = devm_regulator_bulk_get(&i2c->dev, DA7213_NUM_SUPPLIES, + da7213->supplies); + if (ret) { + dev_err(&i2c->dev, "Failed to get supplies: %d\n", ret); + return ret; + } + + ret = regulator_bulk_enable(DA7213_NUM_SUPPLIES, da7213->supplies); + if (ret < 0) + return ret; + + ret = devm_add_action_or_reset(&i2c->dev, da7213_power_off, da7213); + if (ret < 0) + return ret; + da7213->regmap = devm_regmap_init_i2c(i2c, &da7213_regmap_config); if (IS_ERR(da7213->regmap)) { ret = PTR_ERR(da7213->regmap); @@ -1867,6 +1910,11 @@ static int da7213_i2c_probe(struct i2c_client *i2c, return ret; }

+ pm_runtime_set_autosuspend_delay(&i2c->dev, 100); + pm_runtime_use_autosuspend(&i2c->dev); + pm_runtime_set_active(&i2c->dev); + pm_runtime_enable(&i2c->dev); + ret = devm_snd_soc_register_component(&i2c->dev, &soc_component_dev_da7213, &da7213_dai, 1); if (ret < 0) { @@ -1876,6 +1924,34 @@ static int da7213_i2c_probe(struct i2c_client *i2c, return ret; }

+static int __maybe_unused da7213_runtime_suspend(struct device *dev) +{ + struct da7213_priv *da7213 = dev_get_drvdata(dev); + + regcache_cache_only(da7213->regmap, true); + regcache_mark_dirty(da7213->regmap); + regulator_bulk_disable(DA7213_NUM_SUPPLIES, da7213->supplies); + + return 0; +} + +static int __maybe_unused da7213_runtime_resume(struct device *dev) +{ + struct da7213_priv *da7213 = dev_get_drvdata(dev); + int ret; + + ret = regulator_bulk_enable(DA7213_NUM_SUPPLIES, da7213->supplies); + if (ret < 0) + return ret; + regcache_cache_only(da7213->regmap, false); + regcache_sync(da7213->regmap); + return 0; +} + +static const struct dev_pm_ops da7213_pm = { + SET_RUNTIME_PM_OPS(da7213_runtime_suspend, da7213_runtime_resume, NULL) +}; + static const struct i2c_device_id da7213_i2c_id[] = { { "da7213", 0 }, { } @@ -1888,6 +1964,7 @@ static struct i2c_driver da7213_i2c_driver = { .name = "da7213", .of_match_table = of_match_ptr(da7213_of_match), .acpi_match_table = ACPI_PTR(da7213_acpi_match), + .pm = &da7213_pm, }, .probe = da7213_i2c_probe, .id_table = da7213_i2c_id, diff --git a/sound/soc/codecs/da7213.h b/sound/soc/codecs/da7213.h index 3250a3821fcc..3890829dfb6e 100644 --- a/sound/soc/codecs/da7213.h +++ b/sound/soc/codecs/da7213.h @@ -12,6 +12,7 @@

#include <linux/clk.h> #include <linux/regmap.h> +#include <linux/regulator/consumer.h> #include <sound/da7213.h>

/* @@ -521,9 +522,17 @@ enum da7213_sys_clk { DA7213_SYSCLK_PLL_32KHZ };

+/* Regulators */ +enum da7213_supplies { + DA7213_SUPPLY_VDDA = 0, + DA7213_SUPPLY_VDDIO, + DA7213_NUM_SUPPLIES, +}; + /* Codec private data */ struct da7213_priv { struct regmap *regmap; + struct regulator_bulk_data supplies[DA7213_NUM_SUPPLIES]; struct clk *mclk; unsigned int mclk_rate; int clk_src;

Move set_pll function to component level, so that it can be used at both component and DAI level.

Reviewed-by: Adam Thomson Adam.Thomson.Opensource@diasemi.com Signed-off-by: Sebastian Reichel sebastian.reichel@collabora.com --- sound/soc/codecs/da7213.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/sound/soc/codecs/da7213.c b/sound/soc/codecs/da7213.c index 9686948b16ea..3e6ad996741b 100644 --- a/sound/soc/codecs/da7213.c +++ b/sound/soc/codecs/da7213.c @@ -1392,10 +1392,10 @@ static int da7213_set_component_sysclk(struct snd_soc_component *component, }

/* Supported PLL input frequencies are 32KHz, 5MHz - 54MHz. */ -static int da7213_set_dai_pll(struct snd_soc_dai *codec_dai, 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 snd_soc_component *component = codec_dai->component; struct da7213_priv *da7213 = snd_soc_component_get_drvdata(component);

u8 pll_ctrl, indiv_bits, indiv; @@ -1507,7 +1507,6 @@ static int da7213_set_dai_pll(struct snd_soc_dai *codec_dai, int pll_id, static const struct snd_soc_dai_ops da7213_dai_ops = { .hw_params = da7213_hw_params, .set_fmt = da7213_set_dai_fmt, - .set_pll = da7213_set_dai_pll, .digital_mute = da7213_mute, };

@@ -1845,6 +1844,7 @@ static const struct snd_soc_component_driver soc_component_dev_da7213 = { .dapm_routes = da7213_audio_map, .num_dapm_routes = ARRAY_SIZE(da7213_audio_map), .set_sysclk = da7213_set_component_sysclk, + .set_pll = da7213_set_component_pll, .idle_bias_on = 1, .use_pmdown_time = 1, .endianness = 1,

On 11 May 2020 14:26, Sebastian Reichel wrote:

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

sound/soc/codecs/da7213.c | 76 ++++++++++++++++++++++++++++++++++++--- sound/soc/codecs/da7213.h | 2 ++ 2 files changed, 73 insertions(+), 5 deletions(-)

diff --git a/sound/soc/codecs/da7213.c b/sound/soc/codecs/da7213.c index 3e6ad996741b..4a0edd3b7f83 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 +1553,43 @@ 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)

• mode = DA7213_SYSCLK_PLL;
  

• else

• mode = DA7213_SYSCLK_MCLK;
  

We still need to address the handling of the PLL when the codec is slave, and the MCLK rate is not harmonic. In that scenario we need to use the SRM feature of the PLL to synchronise the PLL with the incoming WCLK signal on the DAI. Right now your code will allow for slave mode where the PLL is enabled without SRM, regardless of whether we're acting as slave or not. Either we just don't allow for slave mode with non-harmonic frequencies or we add a bit more in this function to determine if SRM is required which shouldn't be much more code.

• 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;
  

• }
• 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 +1609,8 @@ 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 +1622,10 @@ 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 +1755,6 @@ 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 +1890,11 @@ 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;

};

-- 2.26.2

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; };