diff options
Diffstat (limited to 'sound/soc')
| -rw-r--r-- | sound/soc/codecs/da7219.c | 523 | ||||
| -rw-r--r-- | sound/soc/codecs/da7219.h | 6 |
2 files changed, 400 insertions, 129 deletions
diff --git a/sound/soc/codecs/da7219.c b/sound/soc/codecs/da7219.c index 121a8190f93e..5f5fa3416af3 100644 --- a/sound/soc/codecs/da7219.c +++ b/sound/soc/codecs/da7219.c @@ -797,6 +797,7 @@ static int da7219_dai_event(struct snd_soc_dapm_widget *w, { struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm); struct da7219_priv *da7219 = snd_soc_component_get_drvdata(component); + struct clk *bclk = da7219->dai_clks[DA7219_DAI_BCLK_IDX]; u8 pll_ctrl, pll_status; int i = 0, ret; bool srm_lock = false; @@ -805,11 +806,11 @@ static int da7219_dai_event(struct snd_soc_dapm_widget *w, case SND_SOC_DAPM_PRE_PMU: if (da7219->master) { /* Enable DAI clks for master mode */ - if (da7219->dai_clks) { - ret = clk_prepare_enable(da7219->dai_clks); + if (bclk) { + ret = clk_prepare_enable(bclk); if (ret) { dev_err(component->dev, - "Failed to enable dai_clks\n"); + "Failed to enable DAI clks\n"); return ret; } } else { @@ -852,8 +853,8 @@ static int da7219_dai_event(struct snd_soc_dapm_widget *w, /* Disable DAI clks if in master mode */ if (da7219->master) { - if (da7219->dai_clks) - clk_disable_unprepare(da7219->dai_clks); + if (bclk) + clk_disable_unprepare(bclk); else snd_soc_component_update_bits(component, DA7219_DAI_CLK_MODE, @@ -1385,17 +1386,50 @@ static int da7219_set_dai_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt) return 0; } +static int da7219_set_bclks_per_wclk(struct snd_soc_component *component, + unsigned long factor) +{ + u8 bclks_per_wclk; + + switch (factor) { + case 32: + bclks_per_wclk = DA7219_DAI_BCLKS_PER_WCLK_32; + break; + case 64: + bclks_per_wclk = DA7219_DAI_BCLKS_PER_WCLK_64; + break; + case 128: + bclks_per_wclk = DA7219_DAI_BCLKS_PER_WCLK_128; + break; + case 256: + bclks_per_wclk = DA7219_DAI_BCLKS_PER_WCLK_256; + break; + default: + return -EINVAL; + } + + snd_soc_component_update_bits(component, DA7219_DAI_CLK_MODE, + DA7219_DAI_BCLKS_PER_WCLK_MASK, + bclks_per_wclk); + + return 0; +} + static int da7219_set_dai_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask, unsigned int rx_mask, int slots, int slot_width) { struct snd_soc_component *component = dai->component; struct da7219_priv *da7219 = snd_soc_component_get_drvdata(component); + struct clk *wclk = da7219->dai_clks[DA7219_DAI_WCLK_IDX]; + struct clk *bclk = da7219->dai_clks[DA7219_DAI_BCLK_IDX]; unsigned int ch_mask; - u8 dai_bclks_per_wclk, slot_offset; + unsigned long sr, bclk_rate; + u8 slot_offset; u16 offset; __le16 dai_offset; u32 frame_size; + int ret; /* No channels enabled so disable TDM */ if (!tx_mask) { @@ -1432,28 +1466,26 @@ static int da7219_set_dai_tdm_slot(struct snd_soc_dai *dai, */ if (da7219->master) { frame_size = slots * slot_width; - switch (frame_size) { - case 32: - dai_bclks_per_wclk = DA7219_DAI_BCLKS_PER_WCLK_32; - break; - case 64: - dai_bclks_per_wclk = DA7219_DAI_BCLKS_PER_WCLK_64; - break; - case 128: - dai_bclks_per_wclk = DA7219_DAI_BCLKS_PER_WCLK_128; - break; - case 256: - dai_bclks_per_wclk = DA7219_DAI_BCLKS_PER_WCLK_256; - break; - default: - dev_err(component->dev, "Invalid frame size %d\n", - frame_size); - return -EINVAL; - } - snd_soc_component_update_bits(component, DA7219_DAI_CLK_MODE, - DA7219_DAI_BCLKS_PER_WCLK_MASK, - dai_bclks_per_wclk); + if (bclk) { + sr = clk_get_rate(wclk); + bclk_rate = sr * frame_size; + ret = clk_set_rate(bclk, bclk_rate); + if (ret) { + dev_err(component->dev, + "Failed to set TDM BCLK rate %lu: %d\n", + bclk_rate, ret); + return ret; + } + } else { + ret = da7219_set_bclks_per_wclk(component, frame_size); + if (ret) { + dev_err(component->dev, + "Failed to set TDM BCLKs per WCLK %d: %d\n", + frame_size, ret); + return ret; + } + } } dai_offset = cpu_to_le16(offset); @@ -1471,44 +1503,12 @@ static int da7219_set_dai_tdm_slot(struct snd_soc_dai *dai, return 0; } -static int da7219_hw_params(struct snd_pcm_substream *substream, - struct snd_pcm_hw_params *params, - struct snd_soc_dai *dai) +static int da7219_set_sr(struct snd_soc_component *component, + unsigned long rate) { - struct snd_soc_component *component = dai->component; - struct da7219_priv *da7219 = snd_soc_component_get_drvdata(component); - u8 dai_ctrl = 0, dai_bclks_per_wclk = 0, fs; - unsigned int channels; - int word_len = params_width(params); - int frame_size; - - switch (word_len) { - case 16: - dai_ctrl |= DA7219_DAI_WORD_LENGTH_S16_LE; - break; - case 20: - dai_ctrl |= DA7219_DAI_WORD_LENGTH_S20_LE; - break; - case 24: - dai_ctrl |= DA7219_DAI_WORD_LENGTH_S24_LE; - break; - case 32: - dai_ctrl |= DA7219_DAI_WORD_LENGTH_S32_LE; - break; - default: - return -EINVAL; - } - - channels = params_channels(params); - if ((channels < 1) || (channels > DA7219_DAI_CH_NUM_MAX)) { - dev_err(component->dev, - "Invalid number of channels, only 1 to %d supported\n", - DA7219_DAI_CH_NUM_MAX); - return -EINVAL; - } - dai_ctrl |= channels << DA7219_DAI_CH_NUM_SHIFT; + u8 fs; - switch (params_rate(params)) { + switch (rate) { case 8000: fs = DA7219_SR_8000; break; @@ -1546,28 +1546,103 @@ static int da7219_hw_params(struct snd_pcm_substream *substream, return -EINVAL; } + snd_soc_component_write(component, DA7219_SR, fs); + + return 0; +} + +static int da7219_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *params, + struct snd_soc_dai *dai) +{ + struct snd_soc_component *component = dai->component; + struct da7219_priv *da7219 = snd_soc_component_get_drvdata(component); + struct clk *wclk = da7219->dai_clks[DA7219_DAI_WCLK_IDX]; + struct clk *bclk = da7219->dai_clks[DA7219_DAI_BCLK_IDX]; + u8 dai_ctrl = 0; + unsigned int channels; + unsigned long sr, bclk_rate; + int word_len = params_width(params); + int frame_size, ret; + + switch (word_len) { + case 16: + dai_ctrl |= DA7219_DAI_WORD_LENGTH_S16_LE; + break; + case 20: + dai_ctrl |= DA7219_DAI_WORD_LENGTH_S20_LE; + break; + case 24: + dai_ctrl |= DA7219_DAI_WORD_LENGTH_S24_LE; + break; + case 32: + dai_ctrl |= DA7219_DAI_WORD_LENGTH_S32_LE; + break; + default: + return -EINVAL; + } + + channels = params_channels(params); + if ((channels < 1) || (channels > DA7219_DAI_CH_NUM_MAX)) { + dev_err(component->dev, + "Invalid number of channels, only 1 to %d supported\n", + DA7219_DAI_CH_NUM_MAX); + return -EINVAL; + } + dai_ctrl |= channels << DA7219_DAI_CH_NUM_SHIFT; + + sr = params_rate(params); + if (da7219->master && wclk) { + ret = clk_set_rate(wclk, sr); + if (ret) { + dev_err(component->dev, + "Failed to set WCLK SR %lu: %d\n", sr, ret); + return ret; + } + } else { + ret = da7219_set_sr(component, sr); + if (ret) { + dev_err(component->dev, + "Failed to set SR %lu: %d\n", sr, ret); + return ret; + } + } + /* * If we're master, then we have a limited set of BCLK rates we * support. For slave mode this isn't the case and the codec can detect * the BCLK rate automatically. */ if (da7219->master && !da7219->tdm_en) { - frame_size = word_len * 2; - if (frame_size <= 32) - dai_bclks_per_wclk = DA7219_DAI_BCLKS_PER_WCLK_32; + if ((word_len * DA7219_DAI_CH_NUM_MAX) <= 32) + frame_size = 32; else - dai_bclks_per_wclk = DA7219_DAI_BCLKS_PER_WCLK_64; - - snd_soc_component_update_bits(component, DA7219_DAI_CLK_MODE, - DA7219_DAI_BCLKS_PER_WCLK_MASK, - dai_bclks_per_wclk); + frame_size = 64; + + if (bclk) { + bclk_rate = frame_size * sr; + ret = clk_set_rate(bclk, bclk_rate); + if (ret) { + dev_err(component->dev, + "Failed to set BCLK rate %lu: %d\n", + bclk_rate, ret); + return ret; + } + } else { + ret = da7219_set_bclks_per_wclk(component, frame_size); + if (ret) { + dev_err(component->dev, + "Failed to set BCLKs per WCLK %d: %d\n", + frame_size, ret); + return ret; + } + } } snd_soc_component_update_bits(component, DA7219_DAI_CTRL, DA7219_DAI_WORD_LENGTH_MASK | DA7219_DAI_CH_NUM_MASK, dai_ctrl); - snd_soc_component_write(component, DA7219_SR, fs); return 0; } @@ -1672,11 +1747,14 @@ static struct da7219_pdata *da7219_fw_to_pdata(struct snd_soc_component *compone pdata->wakeup_source = device_property_read_bool(dev, "wakeup-source"); - pdata->dai_clks_name = "da7219-dai-clks"; - if (device_property_read_string(dev, "clock-output-names", - &pdata->dai_clks_name)) - dev_warn(dev, "Using default clk name: %s\n", - pdata->dai_clks_name); + pdata->dai_clk_names[DA7219_DAI_WCLK_IDX] = "da7219-dai-wclk"; + pdata->dai_clk_names[DA7219_DAI_BCLK_IDX] = "da7219-dai-bclk"; + if (device_property_read_string_array(dev, "clock-output-names", + pdata->dai_clk_names, + DA7219_DAI_NUM_CLKS) < 0) + dev_warn(dev, "Using default DAI clk names: %s, %s\n", + pdata->dai_clk_names[DA7219_DAI_WCLK_IDX], + pdata->dai_clk_names[DA7219_DAI_BCLK_IDX]); if (device_property_read_u32(dev, "dlg,micbias-lvl", &of_val32) >= 0) pdata->micbias_lvl = da7219_fw_micbias_lvl(dev, of_val32); @@ -1793,12 +1871,16 @@ static int da7219_handle_supplies(struct snd_soc_component *component) } #ifdef CONFIG_COMMON_CLK -static int da7219_dai_clks_prepare(struct clk_hw *hw) +static int da7219_wclk_prepare(struct clk_hw *hw) { struct da7219_priv *da7219 = - container_of(hw, struct da7219_priv, dai_clks_hw); + container_of(hw, struct da7219_priv, + dai_clks_hw[DA7219_DAI_WCLK_IDX]); struct snd_soc_component *component = da7219->component; + if (!da7219->master) + return -EINVAL; + snd_soc_component_update_bits(component, DA7219_DAI_CLK_MODE, DA7219_DAI_CLK_EN_MASK, DA7219_DAI_CLK_EN_MASK); @@ -1806,36 +1888,48 @@ static int da7219_dai_clks_prepare(struct clk_hw *hw) return 0; } -static void da7219_dai_clks_unprepare(struct clk_hw *hw) +static void da7219_wclk_unprepare(struct clk_hw *hw) { struct da7219_priv *da7219 = - container_of(hw, struct da7219_priv, dai_clks_hw); + container_of(hw, struct da7219_priv, + dai_clks_hw[DA7219_DAI_WCLK_IDX]); struct snd_soc_component *component = da7219->component; + if (!da7219->master) + return; + snd_soc_component_update_bits(component, DA7219_DAI_CLK_MODE, DA7219_DAI_CLK_EN_MASK, 0); } -static int da7219_dai_clks_is_prepared(struct clk_hw *hw) +static int da7219_wclk_is_prepared(struct clk_hw *hw) { struct da7219_priv *da7219 = - container_of(hw, struct da7219_priv, dai_clks_hw); + container_of(hw, struct da7219_priv, + dai_clks_hw[DA7219_DAI_WCLK_IDX]); struct snd_soc_component *component = da7219->component; u8 clk_reg; + if (!da7219->master) + return -EINVAL; + clk_reg = snd_soc_component_read32(component, DA7219_DAI_CLK_MODE); return !!(clk_reg & DA7219_DAI_CLK_EN_MASK); } -static unsigned long da7219_dai_clks_recalc_rate(struct clk_hw *hw, - unsigned long parent_rate) +static unsigned long da7219_wclk_recalc_rate(struct clk_hw *hw, + unsigned long parent_rate) { struct da7219_priv *da7219 = - container_of(hw, struct da7219_priv, dai_clks_hw); + container_of(hw, struct da7219_priv, + dai_clks_hw[DA7219_DAI_WCLK_IDX]); struct snd_soc_component *component = da7219->component; u8 fs = snd_soc_component_read32(component, DA7219_SR); + if (!da7219->master) + return 0; + switch (fs & DA7219_SR_MASK) { case DA7219_SR_8000: return 8000; @@ -1864,11 +1958,151 @@ static unsigned long da7219_dai_clks_recalc_rate(struct clk_hw *hw, } } -static const struct clk_ops da7219_dai_clks_ops = { - .prepare = da7219_dai_clks_prepare, - .unprepare = da7219_dai_clks_unprepare, - .is_prepared = da7219_dai_clks_is_prepared, - .recalc_rate = da7219_dai_clks_recalc_rate, +static long da7219_wclk_round_rate(struct clk_hw *hw, unsigned long rate, + unsigned long *parent_rate) +{ + struct da7219_priv *da7219 = + container_of(hw, struct da7219_priv, + dai_clks_hw[DA7219_DAI_WCLK_IDX]); + + if (!da7219->master) + return -EINVAL; + + if (rate < 11025) + return 8000; + else if (rate < 12000) + return 11025; + else if (rate < 16000) + return 12000; + else if (rate < 22050) + return 16000; + else if (rate < 24000) + return 22050; + else if (rate < 32000) + return 24000; + else if (rate < 44100) + return 32000; + else if (rate < 48000) + return 44100; + else if (rate < 88200) + return 48000; + else if (rate < 96000) + return 88200; + else + return 96000; +} + +static int da7219_wclk_set_rate(struct clk_hw *hw, unsigned long rate, + unsigned long parent_rate) +{ + struct da7219_priv *da7219 = + container_of(hw, struct da7219_priv, + dai_clks_hw[DA7219_DAI_WCLK_IDX]); + struct snd_soc_component *component = da7219->component; + + if (!da7219->master) + return -EINVAL; + + return da7219_set_sr(component, rate); +} + +static unsigned long da7219_bclk_recalc_rate(struct clk_hw *hw, + unsigned long parent_rate) +{ + struct da7219_priv *da7219 = + container_of(hw, struct da7219_priv, + dai_clks_hw[DA7219_DAI_BCLK_IDX]); + struct snd_soc_component *component = da7219->component; + u8 bclks_per_wclk = snd_soc_component_read32(component, + DA7219_DAI_CLK_MODE); + + if (!da7219->master) + return 0; + + switch (bclks_per_wclk & DA7219_DAI_BCLKS_PER_WCLK_MASK) { + case DA7219_DAI_BCLKS_PER_WCLK_32: + return parent_rate * 32; + case DA7219_DAI_BCLKS_PER_WCLK_64: + return parent_rate * 64; + case DA7219_DAI_BCLKS_PER_WCLK_128: + return parent_rate * 128; + case DA7219_DAI_BCLKS_PER_WCLK_256: + return parent_rate * 256; + default: + return 0; + } +} + +static unsigned long da7219_bclk_get_factor(unsigned long rate, + unsigned long parent_rate) +{ + unsigned long factor; + + factor = rate / parent_rate; + if (factor < 64) + return 32; + else if (factor < 128) + return 64; + else if (factor < 256) + return 128; + else + return 256; +} + +static long da7219_bclk_round_rate(struct clk_hw *hw, unsigned long rate, + unsigned long *parent_rate) +{ + struct da7219_priv *da7219 = + container_of(hw, struct da7219_priv, + dai_clks_hw[DA7219_DAI_BCLK_IDX]); + unsigned long factor; + + if (!*parent_rate || !da7219->master) + return -EINVAL; + + /* + * We don't allow changing the parent rate as some BCLK rates can be + * derived from multiple parent WCLK rates (BCLK rates are set as a + * multiplier of WCLK in HW). We just do some rounding down based on the + * parent WCLK rate set and find the appropriate multiplier of BCLK to + * get the rounded down BCLK value. + */ + factor = da7219_bclk_get_factor(rate, *parent_rate); + + return *parent_rate * factor; +} + +static int da7219_bclk_set_rate(struct clk_hw *hw, unsigned long rate, + unsigned long parent_rate) +{ + struct da7219_priv *da7219 = + container_of(hw, struct da7219_priv, + dai_clks_hw[DA7219_DAI_BCLK_IDX]); + struct snd_soc_component *component = da7219->component; + unsigned long factor; + + if (!da7219->master) + return -EINVAL; + + factor = da7219_bclk_get_factor(rate, parent_rate); + + return da7219_set_bclks_per_wclk(component, factor); +} + +static const struct clk_ops da7219_dai_clk_ops[DA7219_DAI_NUM_CLKS] = { + [DA7219_DAI_WCLK_IDX] = { + .prepare = da7219_wclk_prepare, + .unprepare = da7219_wclk_unprepare, + .is_prepared = da7219_wclk_is_prepared, + .recalc_rate = da7219_wclk_recalc_rate, + .round_rate = da7219_wclk_round_rate, + .set_rate = da7219_wclk_set_rate, + }, + [DA7219_DAI_BCLK_IDX] = { + .recalc_rate = da7219_bclk_recalc_rate, + .round_rate = da7219_bclk_round_rate, + .set_rate = da7219_bclk_set_rate, + }, }; static int da7219_register_dai_clks(struct snd_soc_component *component) @@ -1876,47 +2110,81 @@ static int da7219_register_dai_clks(struct snd_soc_component *component) struct device *dev = component->dev; struct da7219_priv *da7219 = snd_soc_component_get_drvdata(component); struct da7219_pdata *pdata = da7219->pdata; - struct clk_init_data init = {}; - struct clk *dai_clks; - struct clk_lookup *dai_clks_lookup; const char *parent_name; + int i, ret; - if (da7219->mclk) { - parent_name = __clk_get_name(da7219->mclk); - init.parent_names = &parent_name; - init.num_parents = 1; - } else { - init.parent_names = NULL; - init.num_parents = 0; - } + for (i = 0; i < DA7219_DAI_NUM_CLKS; ++i) { + struct clk_init_data init = {}; + struct clk *dai_clk; + struct clk_lookup *dai_clk_lookup; + struct clk_hw *dai_clk_hw = &da7219->dai_clks_hw[i]; - init.name = pdata->dai_clks_name; - init.ops = &da7219_dai_clks_ops; - init.flags = CLK_GET_RATE_NOCACHE; - da7219->dai_clks_hw.init = &init; + switch (i) { + case DA7219_DAI_WCLK_IDX: + /* + * If we can, make MCLK the parent of WCLK to ensure + * it's enabled as required. + */ + if (da7219->mclk) { + parent_name = __clk_get_name(da7219->mclk); + init.parent_names = &parent_name; + init.num_parents = 1; + } else { + init.parent_names = NULL; + init.num_parents = 0; + } + break; + case DA7219_DAI_BCLK_IDX: + /* Make WCLK the parent of BCLK */ + parent_name = __clk_get_name(da7219->dai_clks[DA7219_DAI_WCLK_IDX]); + init.parent_names = &parent_name; + init.num_parents = 1; + break; + default: + dev_err(dev, "Invalid clock index\n"); + ret = -EINVAL; + goto err; + } - dai_clks = devm_clk_register(dev, &da7219->dai_clks_hw); - if (IS_ERR(dai_clks)) { - dev_warn(dev, "Failed to register DAI clocks: %ld\n", - PTR_ERR(dai_clks)); - return PTR_ERR(dai_clks); - } - da7219->dai_clks = dai_clks; + init.name = pdata->dai_clk_names[i]; + init.ops = &da7219_dai_clk_ops[i]; + init.flags = CLK_GET_RATE_NOCACHE | CLK_SET_RATE_GATE; + dai_clk_hw->init = &init; + + dai_clk = devm_clk_register(dev, dai_clk_hw); + if (IS_ERR(dai_clk)) { + dev_warn(dev, "Failed to register %s: %ld\n", + init.name, PTR_ERR(dai_clk)); + ret = PTR_ERR(dai_clk); + goto err; + } + da7219->dai_clks[i] = dai_clk; - /* If we're using DT, then register as provider accordingly */ - if (dev->of_node) { - devm_of_clk_add_hw_provider(dev, of_clk_hw_simple_get, - &da7219->dai_clks_hw); - } else { - dai_clks_lookup = clkdev_create(dai_clks, pdata->dai_clks_name, - "%s", dev_name(dev)); - if (!dai_clks_lookup) - return -ENOMEM; - else - da7219->dai_clks_lookup = dai_clks_lookup; + /* If we're using DT, then register as provider accordingly */ + if (dev->of_node) { + devm_of_clk_add_hw_provider(dev, of_clk_hw_simple_get, + dai_clk_hw); + } else { + dai_clk_lookup = clkdev_create(dai_clk, init.name, + "%s", dev_name(dev)); + if (!dai_clk_lookup) { + ret = -ENOMEM; + goto err; + } else { + da7219->dai_clks_lookup[i] = dai_clk_lookup; + } + } } return 0; + +err: + do { + if (da7219->dai_clks_lookup[i]) + clkdev_drop(da7219->dai_clks_lookup[i]); + } while (i-- > 0); + + return ret; } #else static inline int da7219_register_dai_clks(struct snd_soc_component *component) @@ -2080,12 +2348,15 @@ err_disable_reg: static void da7219_remove(struct snd_soc_component *component) { struct da7219_priv *da7219 = snd_soc_component_get_drvdata(component); + int i; da7219_aad_exit(component); #ifdef CONFIG_COMMON_CLK - if (da7219->dai_clks_lookup) - clkdev_drop(da7219->dai_clks_lookup); + for (i = DA7219_DAI_NUM_CLKS - 1; i >= 0; --i) { + if (da7219->dai_clks_lookup[i]) + clkdev_drop(da7219->dai_clks_lookup[i]); + } #endif /* Supplies */ diff --git a/sound/soc/codecs/da7219.h b/sound/soc/codecs/da7219.h index 018819c631fb..f3b180bc986f 100644 --- a/sound/soc/codecs/da7219.h +++ b/sound/soc/codecs/da7219.h @@ -820,10 +820,10 @@ struct da7219_priv { struct mutex pll_lock; #ifdef CONFIG_COMMON_CLK - struct clk_hw dai_clks_hw; + struct clk_hw dai_clks_hw[DA7219_DAI_NUM_CLKS]; #endif - struct clk_lookup *dai_clks_lookup; - struct clk *dai_clks; + struct clk_lookup *dai_clks_lookup[DA7219_DAI_NUM_CLKS]; + struct clk *dai_clks[DA7219_DAI_NUM_CLKS]; struct clk *mclk; unsigned int mclk_rate; |