This patch adds zx296718 SoC support for ZTE's i2s controller driver.
Signed-off-by: Baoyou Xie baoyou.xie@linaro.org --- sound/soc/zte/zx-i2s.c | 45 +++++++++++++++++++++++++++++++++++---------- 1 file changed, 35 insertions(+), 10 deletions(-)
diff --git a/sound/soc/zte/zx-i2s.c b/sound/soc/zte/zx-i2s.c index ed7a56d..2afac69 100644 --- a/sound/soc/zte/zx-i2s.c +++ b/sound/soc/zte/zx-i2s.c @@ -95,12 +95,13 @@ struct zx_i2s_info { struct snd_dmaengine_dai_dma_data dma_playback; struct snd_dmaengine_dai_dma_data dma_capture; - struct clk *dai_clk; + struct clk *dai_wclk, *dai_pclk; void __iomem *reg_base; int master; resource_size_t mapbase; };
+ static void zx_i2s_tx_en(void __iomem *base, bool on) { unsigned long val; @@ -274,9 +275,14 @@ static int zx_i2s_hw_params(struct snd_pcm_substream *substream, val |= ZX_I2S_TIMING_CHN(ch_num); writel_relaxed(val, i2s->reg_base + ZX_I2S_TIMING_CTRL);
- if (i2s->master) - ret = clk_set_rate(i2s->dai_clk, - params_rate(params) * ch_num * CLK_RAT); + if (i2s->master) { + unsigned long rate = params_rate(params) * ch_num * CLK_RAT; + + ret = clk_set_rate(i2s->dai_wclk, rate); + if (!ret && i2s->dai_pclk) + ret = clk_set_rate(i2s->dai_pclk, rate); + } + return ret; }
@@ -328,8 +334,19 @@ static int zx_i2s_startup(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) { struct zx_i2s_info *zx_i2s = dev_get_drvdata(dai->dev); + int ret; + + ret = clk_prepare_enable(zx_i2s->dai_wclk); + if (ret) + return ret;
- return clk_prepare_enable(zx_i2s->dai_clk); + ret = clk_prepare_enable(zx_i2s->dai_pclk); + if (ret) { + clk_disable_unprepare(zx_i2s->dai_wclk); + return ret; + } + + return ret; }
static void zx_i2s_shutdown(struct snd_pcm_substream *substream, @@ -337,7 +354,8 @@ static void zx_i2s_shutdown(struct snd_pcm_substream *substream, { struct zx_i2s_info *zx_i2s = dev_get_drvdata(dai->dev);
- clk_disable_unprepare(zx_i2s->dai_clk); + clk_disable_unprepare(zx_i2s->dai_wclk); + clk_disable_unprepare(zx_i2s->dai_pclk); }
static struct snd_soc_dai_ops zx_i2s_dai_ops = { @@ -381,10 +399,16 @@ static int zx_i2s_probe(struct platform_device *pdev) if (!zx_i2s) return -ENOMEM;
- zx_i2s->dai_clk = devm_clk_get(&pdev->dev, "tx"); - if (IS_ERR(zx_i2s->dai_clk)) { - dev_err(&pdev->dev, "Fail to get clk\n"); - return PTR_ERR(zx_i2s->dai_clk); + zx_i2s->dai_wclk = devm_clk_get(&pdev->dev, "tx"); + if (IS_ERR(zx_i2s->dai_wclk)) { + dev_err(&pdev->dev, "Fail to get wclk\n"); + return PTR_ERR(zx_i2s->dai_wclk); + } + + zx_i2s->dai_pclk = devm_clk_get(&pdev->dev, "pclk"); + if (IS_ERR(zx_i2s->dai_pclk)) { + dev_info(&pdev->dev, "have no pclk\n"); + zx_i2s->dai_pclk = NULL; }
res = platform_get_resource(pdev, IORESOURCE_MEM, 0); @@ -414,6 +438,7 @@ static int zx_i2s_probe(struct platform_device *pdev)
static const struct of_device_id zx_i2s_dt_ids[] = { { .compatible = "zte,zx296702-i2s", }, + { .compatible = "zte,zx296718-i2s", }, {} }; MODULE_DEVICE_TABLE(of, zx_i2s_dt_ids);