From: Kuninori Morimoto Date: Fri, 7 Feb 2014 08:53:06 +0000 (-0800) Subject: ASoC: rsnd: use device dependency clock X-Git-Tag: next-20140306~53^2~4^6~27 X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=8691d0748e566f8708f7a9139e760134f5dc3130;p=karo-tx-linux.git ASoC: rsnd: use device dependency clock Current R-Car sound driver is using device independent audio clock, but it is not good design for DT support. This patch adds device dependent clock support. But, there are some platform which is using independent audio clock. It is still supported at this point, but it will be removed soon. Signed-off-by: Kuninori Morimoto Signed-off-by: Mark Brown --- diff --git a/sound/soc/sh/rcar/adg.c b/sound/soc/sh/rcar/adg.c index 821791e15d04..8d3a82ef2db5 100644 --- a/sound/soc/sh/rcar/adg.c +++ b/sound/soc/sh/rcar/adg.c @@ -385,8 +385,9 @@ int rsnd_adg_probe(struct platform_device *pdev, { struct rsnd_adg *adg; struct device *dev = rsnd_priv_to_dev(priv); - struct clk *clk; + struct clk *clk, *clk_orig; int i; + bool use_old_style = false; adg = devm_kzalloc(dev, sizeof(*adg), GFP_KERNEL); if (!adg) { @@ -394,10 +395,39 @@ int rsnd_adg_probe(struct platform_device *pdev, return -ENOMEM; } - adg->clk[CLKA] = clk_get(NULL, "audio_clk_a"); - adg->clk[CLKB] = clk_get(NULL, "audio_clk_b"); - adg->clk[CLKC] = clk_get(NULL, "audio_clk_c"); - adg->clk[CLKI] = clk_get(NULL, "audio_clk_internal"); + clk_orig = clk_get(dev, NULL); + adg->clk[CLKA] = clk_get(dev, "clk_a"); + adg->clk[CLKB] = clk_get(dev, "clk_b"); + adg->clk[CLKC] = clk_get(dev, "clk_c"); + adg->clk[CLKI] = clk_get(dev, "clk_i"); + + /* + * It request device dependent audio clock. + * But above all clks will indicate rsnd module clock + * if platform doesn't it + */ + for_each_rsnd_clk(clk, adg, i) { + if (clk_orig == clk) { + dev_warn(dev, + "doesn't have device dependent clock, use independent clock\n"); + use_old_style = true; + break; + } + } + + /* + * note: + * these exist in order to keep compatible with + * platform which has device independent audio clock, + * but will be removed soon + */ + if (use_old_style) { + adg->clk[CLKA] = clk_get(NULL, "audio_clk_a"); + adg->clk[CLKB] = clk_get(NULL, "audio_clk_b"); + adg->clk[CLKC] = clk_get(NULL, "audio_clk_c"); + adg->clk[CLKI] = clk_get(NULL, "audio_clk_internal"); + } + for_each_rsnd_clk(clk, adg, i) { if (IS_ERR(clk)) { dev_err(dev, "Audio clock failed\n");