Extend the set_sysclk() handler so we also set frequency of the MCLK1, MCLK2 clocks through clk API when those clocks are specified in DT.
Reviewed-by: Charles Keepax ckeepax@opensource.cirrus.com Acked-by: Krzysztof Kozlowski krzk@kernel.org Signed-off-by: Sylwester Nawrocki s.nawrocki@samsung.com --- Changes since v1: - getting of clocks moved from MFD to the CODEC's driver probe() --- sound/soc/codecs/wm8994.c | 48 +++++++++++++++++++++++++++++++++++---- sound/soc/codecs/wm8994.h | 10 +++++++- 2 files changed, 52 insertions(+), 6 deletions(-)
diff --git a/sound/soc/codecs/wm8994.c b/sound/soc/codecs/wm8994.c index d5fb7f5dd551..f69545dced25 100644 --- a/sound/soc/codecs/wm8994.c +++ b/sound/soc/codecs/wm8994.c @@ -167,12 +167,12 @@ static int configure_aif_clock(struct snd_soc_component *component, int aif)
switch (wm8994->sysclk[aif]) { case WM8994_SYSCLK_MCLK1: - rate = wm8994->mclk[0]; + rate = wm8994->mclk_rate[0]; break;
case WM8994_SYSCLK_MCLK2: reg1 |= 0x8; - rate = wm8994->mclk[1]; + rate = wm8994->mclk_rate[1]; break;
case WM8994_SYSCLK_FLL1: @@ -2372,12 +2372,29 @@ static int wm8994_set_fll(struct snd_soc_dai *dai, int id, int src, return _wm8994_set_fll(dai->component, id, src, freq_in, freq_out); }
+static int wm8994_set_mclk_rate(struct wm8994_priv *wm8994, unsigned int id, + unsigned int *freq) +{ + int ret; + + if (!wm8994->mclk[id].clk || *freq == wm8994->mclk_rate[id]) + return 0; + + ret = clk_set_rate(wm8994->mclk[id].clk, *freq); + if (ret < 0) + return ret; + + *freq = clk_get_rate(wm8994->mclk[id].clk); + + return 0; +} + static int wm8994_set_dai_sysclk(struct snd_soc_dai *dai, int clk_id, unsigned int freq, int dir) { struct snd_soc_component *component = dai->component; struct wm8994_priv *wm8994 = snd_soc_component_get_drvdata(component); - int i; + int ret, i;
switch (dai->id) { case 1: @@ -2392,7 +2409,12 @@ static int wm8994_set_dai_sysclk(struct snd_soc_dai *dai, switch (clk_id) { case WM8994_SYSCLK_MCLK1: wm8994->sysclk[dai->id - 1] = WM8994_SYSCLK_MCLK1; - wm8994->mclk[0] = freq; + + ret = wm8994_set_mclk_rate(wm8994, dai->id - 1, &freq); + if (ret < 0) + return ret; + + wm8994->mclk_rate[0] = freq; dev_dbg(dai->dev, "AIF%d using MCLK1 at %uHz\n", dai->id, freq); break; @@ -2400,7 +2422,12 @@ static int wm8994_set_dai_sysclk(struct snd_soc_dai *dai, case WM8994_SYSCLK_MCLK2: /* TODO: Set GPIO AF */ wm8994->sysclk[dai->id - 1] = WM8994_SYSCLK_MCLK2; - wm8994->mclk[1] = freq; + + ret = wm8994_set_mclk_rate(wm8994, dai->id - 1, &freq); + if (ret < 0) + return ret; + + wm8994->mclk_rate[1] = freq; dev_dbg(dai->dev, "AIF%d using MCLK2 at %uHz\n", dai->id, freq); break; @@ -4456,6 +4483,7 @@ static const struct snd_soc_component_driver soc_component_dev_wm8994 = { static int wm8994_probe(struct platform_device *pdev) { struct wm8994_priv *wm8994; + int ret;
wm8994 = devm_kzalloc(&pdev->dev, sizeof(struct wm8994_priv), GFP_KERNEL); @@ -4467,6 +4495,16 @@ static int wm8994_probe(struct platform_device *pdev)
wm8994->wm8994 = dev_get_drvdata(pdev->dev.parent);
+ wm8994->mclk[WM8994_MCLK1].id = "MCLK1"; + wm8994->mclk[WM8994_MCLK2].id = "MCLK2"; + + ret = devm_clk_bulk_get_optional(pdev->dev.parent, ARRAY_SIZE(wm8994->mclk), + wm8994->mclk); + if (ret < 0) { + dev_err(&pdev->dev, "Failed to get clocks: %d\n", ret); + return ret; + } + pm_runtime_enable(&pdev->dev); pm_runtime_idle(&pdev->dev);
diff --git a/sound/soc/codecs/wm8994.h b/sound/soc/codecs/wm8994.h index 1d6f2abe1c11..41c4b126114d 100644 --- a/sound/soc/codecs/wm8994.h +++ b/sound/soc/codecs/wm8994.h @@ -6,6 +6,7 @@ #ifndef _WM8994_H #define _WM8994_H
+#include <linux/clk.h> #include <sound/soc.h> #include <linux/firmware.h> #include <linux/completion.h> @@ -14,6 +15,12 @@
#include "wm_hubs.h"
+enum { + WM8994_MCLK1, + WM8994_MCLK2, + WM8994_NUM_MCLK +}; + /* Sources for AIF1/2 SYSCLK - use with set_dai_sysclk() */ #define WM8994_SYSCLK_MCLK1 1 #define WM8994_SYSCLK_MCLK2 2 @@ -73,9 +80,10 @@ struct wm8994; struct wm8994_priv { struct wm_hubs_data hubs; struct wm8994 *wm8994; + struct clk_bulk_data mclk[WM8994_NUM_MCLK]; int sysclk[2]; int sysclk_rate[2]; - int mclk[2]; + int mclk_rate[2]; int aifclk[2]; int aifdiv[2]; int channels[2];