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author | Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> | 2017-10-13 06:03:06 +0000 |
---|---|---|
committer | Mark Brown <broonie@kernel.org> | 2017-10-13 11:19:01 +0100 |
commit | 6cba3fa98cdd045e020f096bb8888225d3906895 (patch) | |
tree | 348b9a019fa1be57af73674c7b057aedab730015 /sound/soc/sh/rcar/adg.c | |
parent | 3a9fa27be507b19107a8b3fe03a67e8145aea88c (diff) | |
download | linux-stable-6cba3fa98cdd045e020f096bb8888225d3906895.tar.gz linux-stable-6cba3fa98cdd045e020f096bb8888225d3906895.tar.bz2 linux-stable-6cba3fa98cdd045e020f096bb8888225d3906895.zip |
ASoC: rsnd: more clear ADG clock debug info
ADG inputs clock from CLK{A,B,C,I} and outputs clock from
CLKOUT{0,1,2,3} which is selected by BRG{A,B}.
Now, ADG is assuming BRGA is for 44100Hz related clocks,
BRGB is for 48000Hz related clocks.
Clock related debug is very difficult/confusable.
This patch cleanups clock related debug info.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc/sh/rcar/adg.c')
-rw-r--r-- | sound/soc/sh/rcar/adg.c | 59 |
1 files changed, 41 insertions, 18 deletions
diff --git a/sound/soc/sh/rcar/adg.c b/sound/soc/sh/rcar/adg.c index 1921307780de..8ddb08714faa 100644 --- a/sound/soc/sh/rcar/adg.c +++ b/sound/soc/sh/rcar/adg.c @@ -57,6 +57,13 @@ struct rsnd_adg { i++) #define rsnd_priv_to_adg(priv) ((struct rsnd_adg *)(priv)->adg) +static const char * const clk_name[] = { + [CLKA] = "clk_a", + [CLKB] = "clk_b", + [CLKC] = "clk_c", + [CLKI] = "clk_i", +}; + static u32 rsnd_adg_calculate_rbgx(unsigned long div) { int i, ratio; @@ -279,6 +286,7 @@ static void rsnd_adg_set_ssi_clk(struct rsnd_mod *ssi_mod, u32 val) struct rsnd_priv *priv = rsnd_mod_to_priv(ssi_mod); struct rsnd_adg *adg = rsnd_priv_to_adg(priv); struct rsnd_mod *adg_mod = rsnd_mod_get(adg); + struct device *dev = rsnd_priv_to_dev(priv); int id = rsnd_mod_id(ssi_mod); int shift = (id % 4) * 8; u32 mask = 0xFF << shift; @@ -305,12 +313,13 @@ static void rsnd_adg_set_ssi_clk(struct rsnd_mod *ssi_mod, u32 val) rsnd_mod_bset(adg_mod, AUDIO_CLK_SEL2, mask, val); break; } + + dev_dbg(dev, "AUDIO_CLK_SEL is 0x%x\n", val); } int rsnd_adg_clk_query(struct rsnd_priv *priv, unsigned int rate) { struct rsnd_adg *adg = rsnd_priv_to_adg(priv); - struct device *dev = rsnd_priv_to_dev(priv); struct clk *clk; int i; int sel_table[] = { @@ -320,8 +329,6 @@ int rsnd_adg_clk_query(struct rsnd_priv *priv, unsigned int rate) [CLKI] = 0x0, }; - dev_dbg(dev, "request clock = %d\n", rate); - /* * find suitable clock from * AUDIO_CLKA/AUDIO_CLKB/AUDIO_CLKC/AUDIO_CLKI. @@ -377,9 +384,10 @@ int rsnd_adg_ssi_clk_try_start(struct rsnd_mod *ssi_mod, unsigned int rate) rsnd_mod_write(adg_mod, BRRA, adg->rbga); rsnd_mod_write(adg_mod, BRRB, adg->rbgb); - dev_dbg(dev, "ADG: %s[%d] selects 0x%x for %d\n", - rsnd_mod_name(ssi_mod), rsnd_mod_id(ssi_mod), - data, rate); + dev_dbg(dev, "CLKOUT is based on BRG%c (= %dHz)\n", + (ckr) ? 'B' : 'A', + (ckr) ? adg->rbgb_rate_for_48khz : + adg->rbga_rate_for_441khz); return 0; } @@ -408,21 +416,12 @@ static void rsnd_adg_get_clkin(struct rsnd_priv *priv, { struct device *dev = rsnd_priv_to_dev(priv); struct clk *clk; - static const char * const clk_name[] = { - [CLKA] = "clk_a", - [CLKB] = "clk_b", - [CLKC] = "clk_c", - [CLKI] = "clk_i", - }; int i; for (i = 0; i < CLKMAX; i++) { clk = devm_clk_get(dev, clk_name[i]); adg->clk[i] = IS_ERR(clk) ? NULL : clk; } - - for_each_rsnd_clk(clk, adg, i) - dev_dbg(dev, "clk %d : %p : %ld\n", i, clk, clk_get_rate(clk)); } static void rsnd_adg_get_clkout(struct rsnd_priv *priv, @@ -571,12 +570,35 @@ rsnd_adg_get_clkout_end: adg->ckr = ckr; adg->rbga = rbga; adg->rbgb = rbgb; +} + +#ifdef DEBUG +static void rsnd_adg_clk_dbg_info(struct rsnd_priv *priv, struct rsnd_adg *adg) +{ + struct device *dev = rsnd_priv_to_dev(priv); + struct clk *clk; + int i; + + for_each_rsnd_clk(clk, adg, i) + dev_dbg(dev, "%s : %p : %ld\n", + clk_name[i], clk, clk_get_rate(clk)); - for_each_rsnd_clkout(clk, adg, i) - dev_dbg(dev, "clkout %d : %p : %ld\n", i, clk, clk_get_rate(clk)); dev_dbg(dev, "BRGCKR = 0x%08x, BRRA/BRRB = 0x%x/0x%x\n", - ckr, rbga, rbgb); + adg->ckr, adg->rbga, adg->rbgb); + dev_dbg(dev, "BRGA (for 44100 base) = %d\n", adg->rbga_rate_for_441khz); + dev_dbg(dev, "BRGB (for 48000 base) = %d\n", adg->rbgb_rate_for_48khz); + + /* + * Actual CLKOUT will be exchanged in rsnd_adg_ssi_clk_try_start() + * by BRGCKR::BRGCKR_31 + */ + for_each_rsnd_clkout(clk, adg, i) + dev_dbg(dev, "clkout %d : %p : %ld\n", i, + clk, clk_get_rate(clk)); } +#else +#define rsnd_adg_clk_dbg_info(priv, adg) +#endif int rsnd_adg_probe(struct rsnd_priv *priv) { @@ -595,6 +617,7 @@ int rsnd_adg_probe(struct rsnd_priv *priv) rsnd_adg_get_clkin(priv, adg); rsnd_adg_get_clkout(priv, adg); + rsnd_adg_clk_dbg_info(priv, adg); priv->adg = adg; |