Having the clocks provider data in struct samsung_i2s_priv, i.e. per the I2S controller instance, rather than per CPU DAI better models the hardware and simplifies the code a little. The clock provider is common for both DAIs.
Signed-off-by: Sylwester Nawrocki s.nawrocki@samsung.com Acked-by: Krzysztof Kozlowski krzk@kernel.org --- sound/soc/samsung/i2s.c | 68 ++++++++++++++++++++--------------------- 1 file changed, 33 insertions(+), 35 deletions(-)
diff --git a/sound/soc/samsung/i2s.c b/sound/soc/samsung/i2s.c index 273620914471..fffc76ab60da 100644 --- a/sound/soc/samsung/i2s.c +++ b/sound/soc/samsung/i2s.c @@ -99,9 +99,7 @@ struct i2s_dai {
spinlock_t *lock;
- /* Below fields are only valid if this is the primary FIFO */ - struct clk *clk_table[3]; - struct clk_onecell_data clk_data; + struct samsung_i2s_priv *priv; };
/* Lock for cross i/f checks */ @@ -118,6 +116,10 @@ struct samsung_i2s_priv { struct i2s_dai *dai; struct snd_soc_dai_driver *dai_drv; int num_dais; + + /* The clock provider's data */ + struct clk *clk_table[3]; + struct clk_onecell_data clk_data; };
struct i2s_dai *samsung_i2s_get_pri_dai(struct device *dev) @@ -625,11 +627,10 @@ static int i2s_set_sysclk(struct snd_soc_dai *dai, return ret; }
-static int i2s_set_fmt(struct snd_soc_dai *dai, - unsigned int fmt) +static int i2s_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) { + struct samsung_i2s_priv *priv = snd_soc_dai_get_drvdata(dai); struct i2s_dai *i2s = to_info(dai); - struct i2s_dai *other = get_other_dai(i2s); int lrp_shift, sdf_shift, sdf_mask, lrp_rlow, mod_slave; u32 mod, tmp = 0; unsigned long flags; @@ -687,8 +688,7 @@ static int i2s_set_fmt(struct snd_soc_dai *dai, * CLK_I2S_RCLK_SRC clock is not exposed so we ensure any * clock configuration assigned in DT is not overwritten. */ - if (i2s->rclk_srcrate == 0 && i2s->clk_data.clks == NULL && - other->clk_data.clks == NULL) + if (i2s->rclk_srcrate == 0 && priv->clk_data.clks == NULL) i2s_set_sysclk(dai, SAMSUNG_I2S_RCLKSRC_0, 0, SND_SOC_CLOCK_IN); break; @@ -725,8 +725,8 @@ static int i2s_set_fmt(struct snd_soc_dai *dai, static int i2s_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params, struct snd_soc_dai *dai) { + struct samsung_i2s_priv *priv = snd_soc_dai_get_drvdata(dai); struct i2s_dai *i2s = to_info(dai); - struct i2s_dai *other = get_other_dai(i2s); u32 mod, mask = 0, val = 0; struct clk *rclksrc; unsigned long flags; @@ -811,10 +811,7 @@ static int i2s_hw_params(struct snd_pcm_substream *substream,
i2s->frmclk = params_rate(params);
- rclksrc = i2s->clk_table[CLK_I2S_RCLK_SRC]; - if (!rclksrc || IS_ERR(rclksrc)) - rclksrc = other->clk_table[CLK_I2S_RCLK_SRC]; - + rclksrc = priv->clk_table[CLK_I2S_RCLK_SRC]; if (rclksrc && !IS_ERR(rclksrc)) i2s->rclk_srcrate = clk_get_rate(rclksrc);
@@ -1221,31 +1218,30 @@ static int i2s_runtime_resume(struct device *dev) } #endif /* CONFIG_PM */
-static void i2s_unregister_clocks(struct i2s_dai *i2s) +static void i2s_unregister_clocks(struct samsung_i2s_priv *priv) { int i;
- for (i = 0; i < i2s->clk_data.clk_num; i++) { - if (!IS_ERR(i2s->clk_table[i])) - clk_unregister(i2s->clk_table[i]); + for (i = 0; i < priv->clk_data.clk_num; i++) { + if (!IS_ERR(priv->clk_table[i])) + clk_unregister(priv->clk_table[i]); } }
-static void i2s_unregister_clock_provider(struct platform_device *pdev) +static void i2s_unregister_clock_provider(struct samsung_i2s_priv *priv) { - struct i2s_dai *i2s = samsung_i2s_get_pri_dai(&pdev->dev); - - of_clk_del_provider(pdev->dev.of_node); - i2s_unregister_clocks(i2s); + of_clk_del_provider(priv->pdev->dev.of_node); + i2s_unregister_clocks(priv); }
-static int i2s_register_clock_provider(struct platform_device *pdev) + +static int i2s_register_clock_provider(struct samsung_i2s_priv *priv) {
const char * const i2s_clk_desc[] = { "cdclk", "rclk_src", "prescaler" }; const char *clk_name[2] = { "i2s_opclk0", "i2s_opclk1" }; const char *p_names[2] = { NULL }; - struct device *dev = &pdev->dev; + struct device *dev = &priv->pdev->dev; struct i2s_dai *i2s = samsung_i2s_get_pri_dai(dev); const struct samsung_i2s_variant_regs *reg_info = i2s->variant_regs; const char *i2s_clk_name[ARRAY_SIZE(i2s_clk_desc)]; @@ -1277,37 +1273,37 @@ static int i2s_register_clock_provider(struct platform_device *pdev) u32 val = readl(i2s->addr + I2SPSR); writel(val | PSR_PSREN, i2s->addr + I2SPSR);
- i2s->clk_table[CLK_I2S_RCLK_SRC] = clk_register_mux(dev, + priv->clk_table[CLK_I2S_RCLK_SRC] = clk_register_mux(dev, i2s_clk_name[CLK_I2S_RCLK_SRC], p_names, ARRAY_SIZE(p_names), CLK_SET_RATE_NO_REPARENT | CLK_SET_RATE_PARENT, i2s->addr + I2SMOD, reg_info->rclksrc_off, 1, 0, i2s->lock);
- i2s->clk_table[CLK_I2S_RCLK_PSR] = clk_register_divider(dev, + priv->clk_table[CLK_I2S_RCLK_PSR] = clk_register_divider(dev, i2s_clk_name[CLK_I2S_RCLK_PSR], i2s_clk_name[CLK_I2S_RCLK_SRC], CLK_SET_RATE_PARENT, i2s->addr + I2SPSR, 8, 6, 0, i2s->lock);
p_names[0] = i2s_clk_name[CLK_I2S_RCLK_PSR]; - i2s->clk_data.clk_num = 2; + priv->clk_data.clk_num = 2; }
- i2s->clk_table[CLK_I2S_CDCLK] = clk_register_gate(dev, + priv->clk_table[CLK_I2S_CDCLK] = clk_register_gate(dev, i2s_clk_name[CLK_I2S_CDCLK], p_names[0], CLK_SET_RATE_PARENT, i2s->addr + I2SMOD, reg_info->cdclkcon_off, CLK_GATE_SET_TO_DISABLE, i2s->lock);
- i2s->clk_data.clk_num += 1; - i2s->clk_data.clks = i2s->clk_table; + priv->clk_data.clk_num += 1; + priv->clk_data.clks = priv->clk_table;
ret = of_clk_add_provider(dev->of_node, of_clk_src_onecell_get, - &i2s->clk_data); + &priv->clk_data); if (ret < 0) { dev_err(dev, "failed to add clock provider: %d\n", ret); - i2s_unregister_clocks(i2s); + i2s_unregister_clocks(priv); }
return ret; @@ -1426,6 +1422,7 @@ static int samsung_i2s_probe(struct platform_device *pdev) pri_dai->dma_capture.addr_width = 4; pri_dai->quirks = quirks; pri_dai->variant_regs = i2s_dai_data->i2s_variant_regs; + pri_dai->priv = priv;
if (quirks & QUIRK_PRI_6CHAN) pri_dai->drv->playback.channels_max = 6; @@ -1454,6 +1451,7 @@ static int samsung_i2s_probe(struct platform_device *pdev) sec_dai->quirks = quirks; sec_dai->idma_playback.addr = idma_addr; sec_dai->pri_dai = pri_dai; + sec_dai->priv = priv; pri_dai->sec_dai = sec_dai;
ret = i2s_create_secondary_device(priv); @@ -1485,11 +1483,11 @@ static int samsung_i2s_probe(struct platform_device *pdev) pm_runtime_set_active(&pdev->dev); pm_runtime_enable(&pdev->dev);
- ret = i2s_register_clock_provider(pdev); + ret = i2s_register_clock_provider(priv); if (ret < 0) goto err_disable_pm;
- pri_dai->op_clk = clk_get_parent(pri_dai->clk_table[CLK_I2S_RCLK_SRC]); + pri_dai->op_clk = clk_get_parent(priv->clk_table[CLK_I2S_RCLK_SRC]);
return 0;
@@ -1513,7 +1511,7 @@ static int samsung_i2s_remove(struct platform_device *pdev) pm_runtime_get_sync(&pdev->dev); pm_runtime_disable(&pdev->dev);
- i2s_unregister_clock_provider(pdev); + i2s_unregister_clock_provider(priv); clk_disable_unprepare(pri_dai->clk); pm_runtime_put_noidle(&pdev->dev); i2s_delete_secondary_device(priv);