[alsa-devel] [PATCH RESEND 0/2] Arizona Clocking Improvements
Add support for requesting the input clocks for the CODEC through the clock framework. This is some what of an intermediate step until all the clocking itself in the CODEC can be brought under the clock framework but as there are machine drivers that want to be merged now with source clocks that require gating and difficult to resolve issues between the SPI and clock framework an intermediate solution seems warranted.
The first patch in the original sending of this series is now in mainline through the MFD tree so these just need to go through ASoC now.
Thanks, Charles
Charles Keepax (2): ASoC: arizona: Add gating for clock when used for direct MCLK ASoC: arizona: Add gating for source clocks of the FLLs
sound/soc/codecs/arizona.c | 100 ++++++++++++++++++++++++++++++++++++++++++--- sound/soc/codecs/arizona.h | 2 + sound/soc/codecs/cs47l24.c | 6 ++- sound/soc/codecs/wm5102.c | 9 +++- sound/soc/codecs/wm5110.c | 10 +++-- sound/soc/codecs/wm8997.c | 9 +++- sound/soc/codecs/wm8998.c | 6 ++- 7 files changed, 125 insertions(+), 17 deletions(-)
Whilst ultimately we would like to move all the clocking over to the clock framework, as an intermediate step to get people going for now gating the source clocks for SYSCLK/ASYNCCLK when they are configured to come directly from an MCLK pin.
Signed-off-by: Charles Keepax ckeepax@opensource.wolfsonmicro.com Tested-by: Sylwester Nawrocki s.nawrocki@samsung.com --- sound/soc/codecs/arizona.c | 40 ++++++++++++++++++++++++++++++++++++++++ sound/soc/codecs/arizona.h | 2 ++ sound/soc/codecs/cs47l24.c | 6 ++++-- sound/soc/codecs/wm5102.c | 9 +++++++-- sound/soc/codecs/wm5110.c | 10 +++++++--- sound/soc/codecs/wm8997.c | 9 +++++++-- sound/soc/codecs/wm8998.c | 6 ++++-- 7 files changed, 71 insertions(+), 11 deletions(-)
diff --git a/sound/soc/codecs/arizona.c b/sound/soc/codecs/arizona.c index 846ca07..10be50a 100644 --- a/sound/soc/codecs/arizona.c +++ b/sound/soc/codecs/arizona.c @@ -1233,6 +1233,46 @@ static int arizona_set_opclk(struct snd_soc_codec *codec, unsigned int clk, return -EINVAL; }
+int arizona_clk_ev(struct snd_soc_dapm_widget *w, + struct snd_kcontrol *kcontrol, int event) +{ + struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm); + struct arizona *arizona = dev_get_drvdata(codec->dev->parent); + unsigned int val; + int clk_idx; + int ret; + + ret = regmap_read(arizona->regmap, w->reg, &val); + if (ret) { + dev_err(codec->dev, "Failed to check clock source: %d\n", ret); + return ret; + } + + val = (val & ARIZONA_SYSCLK_SRC_MASK) >> ARIZONA_SYSCLK_SRC_SHIFT; + + switch (val) { + case ARIZONA_CLK_SRC_MCLK1: + clk_idx = ARIZONA_MCLK1; + break; + case ARIZONA_CLK_SRC_MCLK2: + clk_idx = ARIZONA_MCLK2; + break; + default: + return 0; + } + + switch (event) { + case SND_SOC_DAPM_PRE_PMU: + return clk_prepare_enable(arizona->mclk[clk_idx]); + case SND_SOC_DAPM_POST_PMD: + clk_disable_unprepare(arizona->mclk[clk_idx]); + return 0; + default: + return 0; + } +} +EXPORT_SYMBOL_GPL(arizona_clk_ev); + int arizona_set_sysclk(struct snd_soc_codec *codec, int clk_id, int source, unsigned int freq, int dir) { diff --git a/sound/soc/codecs/arizona.h b/sound/soc/codecs/arizona.h index 850aa33..9d0997b 100644 --- a/sound/soc/codecs/arizona.h +++ b/sound/soc/codecs/arizona.h @@ -273,6 +273,8 @@ extern int arizona_eq_coeff_put(struct snd_kcontrol *kcontrol, extern int arizona_lhpf_coeff_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol);
+extern int arizona_clk_ev(struct snd_soc_dapm_widget *w, + struct snd_kcontrol *kcontrol, int event); extern int arizona_set_sysclk(struct snd_soc_codec *codec, int clk_id, int source, unsigned int freq, int dir);
diff --git a/sound/soc/codecs/cs47l24.c b/sound/soc/codecs/cs47l24.c index 5b22564..7df6a67 100644 --- a/sound/soc/codecs/cs47l24.c +++ b/sound/soc/codecs/cs47l24.c @@ -335,9 +335,11 @@ static const struct snd_kcontrol_new cs47l24_aec_loopback_mux =
static const struct snd_soc_dapm_widget cs47l24_dapm_widgets[] = { SND_SOC_DAPM_SUPPLY("SYSCLK", ARIZONA_SYSTEM_CLOCK_1, - ARIZONA_SYSCLK_ENA_SHIFT, 0, NULL, 0), + ARIZONA_SYSCLK_ENA_SHIFT, 0, arizona_clk_ev, + SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD), SND_SOC_DAPM_SUPPLY("ASYNCCLK", ARIZONA_ASYNC_CLOCK_1, - ARIZONA_ASYNC_CLK_ENA_SHIFT, 0, NULL, 0), + ARIZONA_ASYNC_CLK_ENA_SHIFT, 0, arizona_clk_ev, + SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD), SND_SOC_DAPM_SUPPLY("OPCLK", ARIZONA_OUTPUT_SYSTEM_CLOCK, ARIZONA_OPCLK_ENA_SHIFT, 0, NULL, 0), SND_SOC_DAPM_SUPPLY("ASYNCOPCLK", ARIZONA_OUTPUT_ASYNC_CLOCK, diff --git a/sound/soc/codecs/wm5102.c b/sound/soc/codecs/wm5102.c index 93876c6..bb3de5b 100644 --- a/sound/soc/codecs/wm5102.c +++ b/sound/soc/codecs/wm5102.c @@ -607,6 +607,9 @@ static int wm5102_sysclk_ev(struct snd_soc_dapm_widget *w, break; case SND_SOC_DAPM_PRE_PMD: break; + case SND_SOC_DAPM_PRE_PMU: + case SND_SOC_DAPM_POST_PMD: + return arizona_clk_ev(w, kcontrol, event); default: return 0; } @@ -1077,9 +1080,11 @@ static const struct snd_kcontrol_new wm5102_aec_loopback_mux = static const struct snd_soc_dapm_widget wm5102_dapm_widgets[] = { SND_SOC_DAPM_SUPPLY("SYSCLK", ARIZONA_SYSTEM_CLOCK_1, ARIZONA_SYSCLK_ENA_SHIFT, 0, wm5102_sysclk_ev, - SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD), + SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD | + SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD), SND_SOC_DAPM_SUPPLY("ASYNCCLK", ARIZONA_ASYNC_CLOCK_1, - ARIZONA_ASYNC_CLK_ENA_SHIFT, 0, NULL, 0), + ARIZONA_ASYNC_CLK_ENA_SHIFT, 0, arizona_clk_ev, + SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD), SND_SOC_DAPM_SUPPLY("OPCLK", ARIZONA_OUTPUT_SYSTEM_CLOCK, ARIZONA_OPCLK_ENA_SHIFT, 0, NULL, 0), SND_SOC_DAPM_SUPPLY("ASYNCOPCLK", ARIZONA_OUTPUT_ASYNC_CLOCK, diff --git a/sound/soc/codecs/wm5110.c b/sound/soc/codecs/wm5110.c index 06bae3b..407dc4a 100644 --- a/sound/soc/codecs/wm5110.c +++ b/sound/soc/codecs/wm5110.c @@ -183,7 +183,9 @@ static int wm5110_sysclk_ev(struct snd_soc_dapm_widget *w, regmap_write_async(regmap, patch[i].reg, patch[i].def); break; - + case SND_SOC_DAPM_PRE_PMU: + case SND_SOC_DAPM_POST_PMD: + return arizona_clk_ev(w, kcontrol, event); default: break; } @@ -1073,9 +1075,11 @@ static const struct snd_kcontrol_new wm5110_output_anc_src[] = {
static const struct snd_soc_dapm_widget wm5110_dapm_widgets[] = { SND_SOC_DAPM_SUPPLY("SYSCLK", ARIZONA_SYSTEM_CLOCK_1, ARIZONA_SYSCLK_ENA_SHIFT, - 0, wm5110_sysclk_ev, SND_SOC_DAPM_POST_PMU), + 0, wm5110_sysclk_ev, SND_SOC_DAPM_POST_PMU | + SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD), SND_SOC_DAPM_SUPPLY("ASYNCCLK", ARIZONA_ASYNC_CLOCK_1, - ARIZONA_ASYNC_CLK_ENA_SHIFT, 0, NULL, 0), + ARIZONA_ASYNC_CLK_ENA_SHIFT, 0, arizona_clk_ev, + SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD), SND_SOC_DAPM_SUPPLY("OPCLK", ARIZONA_OUTPUT_SYSTEM_CLOCK, ARIZONA_OPCLK_ENA_SHIFT, 0, NULL, 0), SND_SOC_DAPM_SUPPLY("ASYNCOPCLK", ARIZONA_OUTPUT_ASYNC_CLOCK, diff --git a/sound/soc/codecs/wm8997.c b/sound/soc/codecs/wm8997.c index 2f2821b..f5f5d43 100644 --- a/sound/soc/codecs/wm8997.c +++ b/sound/soc/codecs/wm8997.c @@ -108,6 +108,9 @@ static int wm8997_sysclk_ev(struct snd_soc_dapm_widget *w, break; case SND_SOC_DAPM_PRE_PMD: break; + case SND_SOC_DAPM_PRE_PMU: + case SND_SOC_DAPM_POST_PMD: + return arizona_clk_ev(w, kcontrol, event); default: return 0; } @@ -408,9 +411,11 @@ static const struct snd_kcontrol_new wm8997_aec_loopback_mux = static const struct snd_soc_dapm_widget wm8997_dapm_widgets[] = { SND_SOC_DAPM_SUPPLY("SYSCLK", ARIZONA_SYSTEM_CLOCK_1, ARIZONA_SYSCLK_ENA_SHIFT, 0, wm8997_sysclk_ev, - SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD), + SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD | + SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD), SND_SOC_DAPM_SUPPLY("ASYNCCLK", ARIZONA_ASYNC_CLOCK_1, - ARIZONA_ASYNC_CLK_ENA_SHIFT, 0, NULL, 0), + ARIZONA_ASYNC_CLK_ENA_SHIFT, 0, arizona_clk_ev, + SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD), SND_SOC_DAPM_SUPPLY("OPCLK", ARIZONA_OUTPUT_SYSTEM_CLOCK, ARIZONA_OPCLK_ENA_SHIFT, 0, NULL, 0), SND_SOC_DAPM_SUPPLY("ASYNCOPCLK", ARIZONA_OUTPUT_ASYNC_CLOCK, diff --git a/sound/soc/codecs/wm8998.c b/sound/soc/codecs/wm8998.c index bcc2e10..3eaa361 100644 --- a/sound/soc/codecs/wm8998.c +++ b/sound/soc/codecs/wm8998.c @@ -541,9 +541,11 @@ static const struct snd_kcontrol_new wm8998_aec_loopback_mux[] = {
static const struct snd_soc_dapm_widget wm8998_dapm_widgets[] = { SND_SOC_DAPM_SUPPLY("SYSCLK", ARIZONA_SYSTEM_CLOCK_1, - ARIZONA_SYSCLK_ENA_SHIFT, 0, NULL, 0), + ARIZONA_SYSCLK_ENA_SHIFT, 0, arizona_clk_ev, + SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD), SND_SOC_DAPM_SUPPLY("ASYNCCLK", ARIZONA_ASYNC_CLOCK_1, - ARIZONA_ASYNC_CLK_ENA_SHIFT, 0, NULL, 0), + ARIZONA_ASYNC_CLK_ENA_SHIFT, 0, arizona_clk_ev, + SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD), SND_SOC_DAPM_SUPPLY("OPCLK", ARIZONA_OUTPUT_SYSTEM_CLOCK, ARIZONA_OPCLK_ENA_SHIFT, 0, NULL, 0), SND_SOC_DAPM_SUPPLY("ASYNCOPCLK", ARIZONA_OUTPUT_ASYNC_CLOCK,
Whilst ultimately we would like to move all the clocking over to the clock framework, as an intermediate step to get people going for now enable the source clocks for FLLs as they are powered up.
Signed-off-by: Charles Keepax ckeepax@opensource.wolfsonmicro.com Tested-by: Sylwester Nawrocki s.nawrocki@samsung.com --- sound/soc/codecs/arizona.c | 60 +++++++++++++++++++++++++++++++++++++++++----- 1 file changed, 54 insertions(+), 6 deletions(-)
diff --git a/sound/soc/codecs/arizona.c b/sound/soc/codecs/arizona.c index 10be50a..7f7d4b3 100644 --- a/sound/soc/codecs/arizona.c +++ b/sound/soc/codecs/arizona.c @@ -2282,6 +2282,42 @@ static int arizona_is_enabled_fll(struct arizona_fll *fll, int base) return reg & ARIZONA_FLL1_ENA; }
+static int arizona_set_fll_clks(struct arizona_fll *fll, int base, bool ena) +{ + struct arizona *arizona = fll->arizona; + unsigned int val; + struct clk *clk; + int ret; + + ret = regmap_read(arizona->regmap, base + 6, &val); + if (ret != 0) { + arizona_fll_err(fll, "Failed to read current source: %d\n", + ret); + return ret; + } + + val &= ARIZONA_FLL1_CLK_REF_SRC_MASK; + val >>= ARIZONA_FLL1_CLK_REF_SRC_SHIFT; + + switch (val) { + case ARIZONA_FLL_SRC_MCLK1: + clk = arizona->mclk[ARIZONA_MCLK1]; + break; + case ARIZONA_FLL_SRC_MCLK2: + clk = arizona->mclk[ARIZONA_MCLK2]; + break; + default: + return 0; + } + + if (ena) { + return clk_prepare_enable(clk); + } else { + clk_disable_unprepare(clk); + return 0; + } +} + static int arizona_enable_fll(struct arizona_fll *fll) { struct arizona *arizona = fll->arizona; @@ -2304,6 +2340,10 @@ static int arizona_enable_fll(struct arizona_fll *fll) udelay(32); regmap_update_bits_async(fll->arizona->regmap, fll->base + 0x9, ARIZONA_FLL1_GAIN_MASK, 0); + + if (arizona_is_enabled_fll(fll, fll->base + 0x10) > 0) + arizona_set_fll_clks(fll, fll->base + 0x10, false); + arizona_set_fll_clks(fll, fll->base, false); }
/* @@ -2358,10 +2398,13 @@ static int arizona_enable_fll(struct arizona_fll *fll) if (!already_enabled) pm_runtime_get_sync(arizona->dev);
- if (use_sync) + if (use_sync) { + arizona_set_fll_clks(fll, fll->base + 0x10, true); regmap_update_bits_async(arizona->regmap, fll->base + 0x11, ARIZONA_FLL1_SYNC_ENA, ARIZONA_FLL1_SYNC_ENA); + } + arizona_set_fll_clks(fll, fll->base, true); regmap_update_bits_async(arizona->regmap, fll->base + 1, ARIZONA_FLL1_ENA, ARIZONA_FLL1_ENA);
@@ -2394,19 +2437,24 @@ static int arizona_enable_fll(struct arizona_fll *fll) static void arizona_disable_fll(struct arizona_fll *fll) { struct arizona *arizona = fll->arizona; - bool change; + bool ref_change, sync_change;
regmap_update_bits_async(arizona->regmap, fll->base + 1, ARIZONA_FLL1_FREERUN, ARIZONA_FLL1_FREERUN); regmap_update_bits_check(arizona->regmap, fll->base + 1, - ARIZONA_FLL1_ENA, 0, &change); - regmap_update_bits(arizona->regmap, fll->base + 0x11, - ARIZONA_FLL1_SYNC_ENA, 0); + ARIZONA_FLL1_ENA, 0, &ref_change); + regmap_update_bits_check(arizona->regmap, fll->base + 0x11, + ARIZONA_FLL1_SYNC_ENA, 0, &sync_change); regmap_update_bits_async(arizona->regmap, fll->base + 1, ARIZONA_FLL1_FREERUN, 0);
- if (change) + if (sync_change) + arizona_set_fll_clks(fll, fll->base + 0x10, false); + + if (ref_change) { + arizona_set_fll_clks(fll, fll->base, false); pm_runtime_put_autosuspend(arizona->dev); + } }
int arizona_set_fll_refclk(struct arizona_fll *fll, int source,
participants (1)
-
Charles Keepax