diff options
Diffstat (limited to 'sound/soc/codecs/nau8822.c')
| -rw-r--r-- | sound/soc/codecs/nau8822.c | 78 |
1 files changed, 60 insertions, 18 deletions
diff --git a/sound/soc/codecs/nau8822.c b/sound/soc/codecs/nau8822.c index e6909e64dfa3..fd4a96a12060 100644 --- a/sound/soc/codecs/nau8822.c +++ b/sound/soc/codecs/nau8822.c @@ -14,6 +14,7 @@ #include <linux/moduleparam.h> #include <linux/kernel.h> #include <linux/init.h> +#include <linux/clk.h> #include <linux/delay.h> #include <linux/pm.h> #include <linux/i2c.h> @@ -612,20 +613,6 @@ static const struct snd_soc_dapm_route nau8822_dapm_routes[] = { {"Right DAC", NULL, "Digital Loopback"}, }; -static int nau8822_set_dai_sysclk(struct snd_soc_dai *dai, int clk_id, - unsigned int freq, int dir) -{ - struct snd_soc_component *component = dai->component; - struct nau8822 *nau8822 = snd_soc_component_get_drvdata(component); - - nau8822->div_id = clk_id; - nau8822->sysclk = freq; - dev_dbg(component->dev, "master sysclk %dHz, source %s\n", freq, - clk_id == NAU8822_CLK_PLL ? "PLL" : "MCLK"); - - return 0; -} - static int nau8822_calc_pll(unsigned int pll_in, unsigned int fs, struct nau8822_pll *pll_param) { @@ -749,7 +736,7 @@ static int nau8822_set_pll(struct snd_soc_dai *dai, int pll_id, int source, return ret; } - dev_info(component->dev, + dev_dbg(component->dev, "pll_int=%x pll_frac=%x mclk_scaler=%x pre_factor=%x\n", pll_param->pll_int, pll_param->pll_frac, pll_param->mclk_scaler, pll_param->pre_factor); @@ -782,6 +769,35 @@ static int nau8822_set_pll(struct snd_soc_dai *dai, int pll_id, int source, return 0; } +static int nau8822_set_dai_sysclk(struct snd_soc_dai *dai, int clk_id, + unsigned int freq, int dir) +{ + struct snd_soc_component *component = dai->component; + struct nau8822 *nau8822 = snd_soc_component_get_drvdata(component); + unsigned long mclk_freq; + + nau8822->div_id = clk_id; + nau8822->sysclk = freq; + + if (nau8822->mclk) { + mclk_freq = clk_get_rate(nau8822->mclk); + if (mclk_freq != freq) { + int ret = nau8822_set_pll(dai, NAU8822_CLK_MCLK, + NAU8822_CLK_MCLK, mclk_freq, freq); + if (ret) { + dev_err(component->dev, "Failed to set PLL\n"); + return ret; + } + nau8822->div_id = NAU8822_CLK_PLL; + } + } + + dev_dbg(component->dev, "master sysclk %dHz, source %s\n", freq, + nau8822->div_id == NAU8822_CLK_PLL ? "PLL" : "MCLK"); + + return 0; +} + static int nau8822_set_dai_fmt(struct snd_soc_dai *dai, unsigned int fmt) { struct snd_soc_component *component = dai->component; @@ -848,7 +864,7 @@ static int nau8822_hw_params(struct snd_pcm_substream *substream, { struct snd_soc_component *component = dai->component; struct nau8822 *nau8822 = snd_soc_component_get_drvdata(component); - int val_len = 0, val_rate = 0; + int div = 0, val_len = 0, val_rate = 0; unsigned int ctrl_val, bclk_fs, bclk_div; /* make BCLK and LRC divide configuration if the codec as master. */ @@ -915,8 +931,10 @@ static int nau8822_hw_params(struct snd_pcm_substream *substream, /* If the master clock is from MCLK, provide the runtime FS for driver * to get the master clock prescaler configuration. */ - if (nau8822->div_id == NAU8822_CLK_MCLK) - nau8822_config_clkdiv(dai, 0, params_rate(params)); + if (nau8822->div_id != NAU8822_CLK_MCLK) + div = nau8822->pll.mclk_scaler; + + nau8822_config_clkdiv(dai, div, params_rate(params)); return 0; } @@ -940,15 +958,34 @@ static int nau8822_mute(struct snd_soc_dai *dai, int mute, int direction) static int nau8822_set_bias_level(struct snd_soc_component *component, enum snd_soc_bias_level level) { + struct nau8822 *nau8822 = snd_soc_component_get_drvdata(component); + switch (level) { case SND_SOC_BIAS_ON: + break; + case SND_SOC_BIAS_PREPARE: + if (nau8822->mclk && + snd_soc_component_get_bias_level(component) != SND_SOC_BIAS_ON) { + int ret = clk_prepare_enable(nau8822->mclk); + + if (ret) { + dev_err(component->dev, + "Failed to enable MCLK: %d\n", ret); + return ret; + } + } + snd_soc_component_update_bits(component, NAU8822_REG_POWER_MANAGEMENT_1, NAU8822_REFIMP_MASK, NAU8822_REFIMP_80K); break; case SND_SOC_BIAS_STANDBY: + if (nau8822->mclk && + snd_soc_component_get_bias_level(component) != SND_SOC_BIAS_OFF) + clk_disable_unprepare(nau8822->mclk); + snd_soc_component_update_bits(component, NAU8822_REG_POWER_MANAGEMENT_1, NAU8822_IOBUF_EN | NAU8822_ABIAS_EN, @@ -1125,6 +1162,11 @@ static int nau8822_i2c_probe(struct i2c_client *i2c) } i2c_set_clientdata(i2c, nau8822); + nau8822->mclk = devm_clk_get_optional(&i2c->dev, "mclk"); + if (IS_ERR(nau8822->mclk)) + return dev_err_probe(&i2c->dev, PTR_ERR(nau8822->mclk), + "Error getting mclk\n"); + nau8822->regmap = devm_regmap_init_i2c(i2c, &nau8822_regmap_config); if (IS_ERR(nau8822->regmap)) { ret = PTR_ERR(nau8822->regmap); |