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author | Mark Brown <broonie@kernel.org> | 2021-06-03 19:36:04 +0100 |
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committer | Mark Brown <broonie@kernel.org> | 2021-06-03 19:36:04 +0100 |
commit | f3b3bceb859c76a91ddd43c602428e4451598b3d (patch) | |
tree | dd3fbba294a4585b0959eaf9b32f75ef7f0c7ff0 | |
parent | 81aad47278539f02de808bcc8251fed0ad3d6f55 (diff) | |
parent | 3f4593fb4a9ddb53edefcbf7d4c5fd1f04717422 (diff) | |
download | linux-stable-f3b3bceb859c76a91ddd43c602428e4451598b3d.tar.gz linux-stable-f3b3bceb859c76a91ddd43c602428e4451598b3d.tar.bz2 linux-stable-f3b3bceb859c76a91ddd43c602428e4451598b3d.zip |
Merge series "ASoC: rsnd: tidyup adg and header" from Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>:
Hi Mark
I noticed that adg can be more clean code.
And rsnd.h header comment was not so good
because patch has been randomly added.
This patch tidyup these.
Kuninori Morimoto (5):
ASoC: rsnd: adg: supply __printf(x, y) formatting for dbg_msg()
ASoC: rsnd: adg: tidyup rsnd_adg_get_clkin/out() parameter
ASoC: rsnd: adg: use more simple method for null_clk
ASoC: rsnd: adg: check return value for rsnd_adg_get_clkin/out()
ASoC: rsnd: tidyup __rsnd_mod_xxx macro comments
sound/soc/sh/rcar/adg.c | 139 +++++++++++++++++++++++++--------------
sound/soc/sh/rcar/rsnd.h | 21 ++----
2 files changed, 97 insertions(+), 63 deletions(-)
--
2.25.1
-rw-r--r-- | sound/soc/sh/rcar/adg.c | 139 | ||||
-rw-r--r-- | sound/soc/sh/rcar/rsnd.h | 21 |
2 files changed, 97 insertions, 63 deletions
diff --git a/sound/soc/sh/rcar/adg.c b/sound/soc/sh/rcar/adg.c index 78916332c22f..0ebee1ed06a9 100644 --- a/sound/soc/sh/rcar/adg.c +++ b/sound/soc/sh/rcar/adg.c @@ -28,6 +28,7 @@ static struct rsnd_mod_ops adg_ops = { struct rsnd_adg { struct clk *clk[CLKMAX]; struct clk *clkout[CLKOUTMAX]; + struct clk *null_clk; struct clk_onecell_data onecell; struct rsnd_mod mod; int clk_rate[CLKMAX]; @@ -363,76 +364,103 @@ int rsnd_adg_ssi_clk_try_start(struct rsnd_mod *ssi_mod, unsigned int rate) void rsnd_adg_clk_control(struct rsnd_priv *priv, int enable) { struct rsnd_adg *adg = rsnd_priv_to_adg(priv); - struct device *dev = rsnd_priv_to_dev(priv); struct clk *clk; int i; for_each_rsnd_clk(clk, adg, i) { if (enable) { - int ret = clk_prepare_enable(clk); + clk_prepare_enable(clk); /* * We shouldn't use clk_get_rate() under * atomic context. Let's keep it when * rsnd_adg_clk_enable() was called */ - adg->clk_rate[i] = 0; - if (ret < 0) - dev_warn(dev, "can't use clk %d\n", i); - else - adg->clk_rate[i] = clk_get_rate(clk); + adg->clk_rate[i] = clk_get_rate(clk); } else { - if (adg->clk_rate[i]) - clk_disable_unprepare(clk); - adg->clk_rate[i] = 0; + clk_disable_unprepare(clk); } } } -#define NULL_CLK "rsnd_adg_null" -static struct clk *rsnd_adg_null_clk_get(struct rsnd_priv *priv) +static struct clk *rsnd_adg_create_null_clk(struct rsnd_priv *priv, + const char * const name, + const char *parent) { struct device *dev = rsnd_priv_to_dev(priv); + struct clk *clk; - if (!priv->null_hw) { - struct clk_hw *_hw; - int ret; + clk = clk_register_fixed_rate(dev, name, parent, 0, 0); + if (IS_ERR(clk)) { + dev_err(dev, "create null clk error\n"); + return NULL; + } - _hw = clk_hw_register_fixed_rate_with_accuracy(dev, NULL_CLK, NULL, 0, 0, 0); - if (IS_ERR(_hw)) - return NULL; + return clk; +} + +static struct clk *rsnd_adg_null_clk_get(struct rsnd_priv *priv) +{ + struct rsnd_adg *adg = priv->adg; - ret = of_clk_add_hw_provider(dev->of_node, of_clk_hw_simple_get, _hw); - if (ret < 0) - clk_hw_unregister_fixed_rate(_hw); + if (!adg->null_clk) { + static const char * const name = "rsnd_adg_null"; - priv->null_hw = _hw; + adg->null_clk = rsnd_adg_create_null_clk(priv, name, NULL); } - return clk_hw_get_clk(priv->null_hw, NULL_CLK); + return adg->null_clk; +} + +static void rsnd_adg_null_clk_clean(struct rsnd_priv *priv) +{ + struct rsnd_adg *adg = priv->adg; + + if (adg->null_clk) + clk_unregister_fixed_rate(adg->null_clk); } -static void rsnd_adg_get_clkin(struct rsnd_priv *priv, - struct rsnd_adg *adg) +static int rsnd_adg_get_clkin(struct rsnd_priv *priv) { + struct rsnd_adg *adg = priv->adg; struct device *dev = rsnd_priv_to_dev(priv); + struct clk *clk; int i; for (i = 0; i < CLKMAX; i++) { - struct clk *clk = devm_clk_get(dev, clk_name[i]); + clk = devm_clk_get(dev, clk_name[i]); if (IS_ERR(clk)) clk = rsnd_adg_null_clk_get(priv); if (IS_ERR(clk)) - dev_err(dev, "no adg clock (%s)\n", clk_name[i]); + goto err; adg->clk[i] = clk; } + + return 0; + +err: + dev_err(dev, "adg clock IN get failed\n"); + + rsnd_adg_null_clk_clean(priv); + + return -EIO; } -static void rsnd_adg_get_clkout(struct rsnd_priv *priv, - struct rsnd_adg *adg) +static void rsnd_adg_unregister_clkout(struct rsnd_priv *priv) { + struct rsnd_adg *adg = priv->adg; + struct clk *clk; + int i; + + for_each_rsnd_clkout(clk, adg, i) + clk_unregister_fixed_rate(clk); +} + +static int rsnd_adg_get_clkout(struct rsnd_priv *priv) +{ + struct rsnd_adg *adg = priv->adg; struct clk *clk; struct device *dev = rsnd_priv_to_dev(priv); struct device_node *np = dev->of_node; @@ -472,9 +500,8 @@ static void rsnd_adg_get_clkout(struct rsnd_priv *priv, req_size = prop->length / sizeof(u32); if (req_size > REQ_SIZE) { - dev_err(dev, - "too many clock-frequency, use top %d\n", REQ_SIZE); - req_size = REQ_SIZE; + dev_err(dev, "too many clock-frequency\n"); + return -EINVAL; } of_property_read_u32_array(np, "clock-frequency", req_rate, req_size); @@ -555,10 +582,11 @@ static void rsnd_adg_get_clkout(struct rsnd_priv *priv, if (!count) { clk = clk_register_fixed_rate(dev, clkout_name[CLKOUT], parent_clk_name, 0, req_rate[0]); - if (!IS_ERR(clk)) { - adg->clkout[CLKOUT] = clk; - of_clk_add_provider(np, of_clk_src_simple_get, clk); - } + if (IS_ERR(clk)) + goto err; + + adg->clkout[CLKOUT] = clk; + of_clk_add_provider(np, of_clk_src_simple_get, clk); } /* * for clkout0/1/2/3 @@ -568,8 +596,10 @@ static void rsnd_adg_get_clkout(struct rsnd_priv *priv, clk = clk_register_fixed_rate(dev, clkout_name[i], parent_clk_name, 0, req_rate[0]); - if (!IS_ERR(clk)) - adg->clkout[i] = clk; + if (IS_ERR(clk)) + goto err; + + adg->clkout[i] = clk; } adg->onecell.clks = adg->clkout; adg->onecell.clk_num = CLKOUTMAX; @@ -581,9 +611,19 @@ rsnd_adg_get_clkout_end: adg->ckr = ckr; adg->rbga = rbga; adg->rbgb = rbgb; + + return 0; + +err: + dev_err(dev, "adg clock OUT get failed\n"); + + rsnd_adg_unregister_clkout(priv); + + return -EIO; } #if defined(DEBUG) || defined(CONFIG_DEBUG_FS) +__printf(3, 4) static void dbg_msg(struct device *dev, struct seq_file *m, const char *fmt, ...) { @@ -643,11 +683,16 @@ int rsnd_adg_probe(struct rsnd_priv *priv) if (ret) return ret; - rsnd_adg_get_clkin(priv, adg); - rsnd_adg_get_clkout(priv, adg); - priv->adg = adg; + ret = rsnd_adg_get_clkin(priv); + if (ret) + return ret; + + ret = rsnd_adg_get_clkout(priv); + if (ret) + return ret; + rsnd_adg_clk_enable(priv); rsnd_adg_clk_dbg_info(priv, NULL); @@ -658,17 +703,13 @@ void rsnd_adg_remove(struct rsnd_priv *priv) { struct device *dev = rsnd_priv_to_dev(priv); struct device_node *np = dev->of_node; - struct rsnd_adg *adg = priv->adg; - struct clk *clk; - int i; - for_each_rsnd_clkout(clk, adg, i) - if (adg->clkout[i]) - clk_unregister_fixed_rate(adg->clkout[i]); - if (priv->null_hw) - clk_hw_unregister_fixed_rate(priv->null_hw); + rsnd_adg_unregister_clkout(priv); of_clk_del_provider(np); rsnd_adg_clk_disable(priv); + + /* It should be called after rsnd_adg_clk_disable() */ + rsnd_adg_null_clk_clean(priv); } diff --git a/sound/soc/sh/rcar/rsnd.h b/sound/soc/sh/rcar/rsnd.h index b2fbe3bbaabd..6580bab0e229 100644 --- a/sound/soc/sh/rcar/rsnd.h +++ b/sound/soc/sh/rcar/rsnd.h @@ -364,19 +364,13 @@ struct rsnd_mod { /* * status * - * 0xH0000CB0 + * 0xH000DCB0 * * B 0: init 1: quit * C 0: start 1: stop * D 0: hw_params 1: hw_free * * H is always called (see __rsnd_mod_call) - * H 0: probe 1: remove - * H 0: pcm_new - * H 0: fallback - * H 0: pointer - * H 0: prepare - * H 0: cleanup */ #define __rsnd_mod_shift_init 4 #define __rsnd_mod_shift_quit 4 @@ -412,16 +406,16 @@ struct rsnd_mod { #define __rsnd_mod_call_remove 0 #define __rsnd_mod_call_prepare 0 #define __rsnd_mod_call_cleanup 0 -#define __rsnd_mod_call_init 0 -#define __rsnd_mod_call_quit 1 -#define __rsnd_mod_call_start 0 -#define __rsnd_mod_call_stop 1 +#define __rsnd_mod_call_init 0 /* needs protect */ +#define __rsnd_mod_call_quit 1 /* needs protect */ +#define __rsnd_mod_call_start 0 /* needs protect */ +#define __rsnd_mod_call_stop 1 /* needs protect */ +#define __rsnd_mod_call_hw_params 0 /* needs protect */ +#define __rsnd_mod_call_hw_free 1 /* needs protect */ #define __rsnd_mod_call_irq 0 #define __rsnd_mod_call_pcm_new 0 #define __rsnd_mod_call_fallback 0 -#define __rsnd_mod_call_hw_params 0 #define __rsnd_mod_call_pointer 0 -#define __rsnd_mod_call_hw_free 1 #define rsnd_mod_to_priv(mod) ((mod)->priv) #define rsnd_mod_power_on(mod) clk_enable((mod)->clk) @@ -646,7 +640,6 @@ struct rsnd_priv { * below value will be filled on rsnd_adg_probe() */ void *adg; - struct clk_hw *null_hw; /* * below value will be filled on rsnd_dma_probe() |