static int s3c24xx_i2s_probe(struct platform_device *pdev, struct snd_soc_dai *dai) { pr_debug("Entered %s\n", __func__); s3c24xx_i2s.regs = ioremap(S3C2410_PA_IIS, 0x100); if (s3c24xx_i2s.regs == NULL) return -ENXIO; s3c24xx_i2s.iis_clk = clk_get(&pdev->dev, "iis"); if (s3c24xx_i2s.iis_clk == NULL) { pr_err("failed to get iis_clock\n"); iounmap(s3c24xx_i2s.regs); return -ENODEV; } clk_enable(s3c24xx_i2s.iis_clk); /* Configure the I2S pins in correct mode */ s3c2410_gpio_cfgpin(S3C2410_GPE0, S3C2410_GPE0_I2SLRCK); s3c2410_gpio_cfgpin(S3C2410_GPE1, S3C2410_GPE1_I2SSCLK); s3c2410_gpio_cfgpin(S3C2410_GPE2, S3C2410_GPE2_CDCLK); s3c2410_gpio_cfgpin(S3C2410_GPE3, S3C2410_GPE3_I2SSDI); s3c2410_gpio_cfgpin(S3C2410_GPE4, S3C2410_GPE4_I2SSDO); writel(S3C2410_IISCON_IISEN, s3c24xx_i2s.regs + S3C2410_IISCON); s3c24xx_snd_txctrl(0); s3c24xx_snd_rxctrl(0); return 0; }
static int s3c24xx_i2s_probe(struct snd_soc_dai *dai) { pr_debug("Entered %s\n", __func__); samsung_asoc_init_dma_data(dai, &s3c24xx_i2s_pcm_stereo_out, &s3c24xx_i2s_pcm_stereo_in); s3c24xx_i2s.iis_clk = devm_clk_get(dai->dev, "iis"); if (IS_ERR(s3c24xx_i2s.iis_clk)) { pr_err("failed to get iis_clock\n"); return PTR_ERR(s3c24xx_i2s.iis_clk); } clk_prepare_enable(s3c24xx_i2s.iis_clk); /* Configure the I2S pins (GPE0...GPE4) in correct mode */ s3c_gpio_cfgall_range(S3C2410_GPE(0), 5, S3C_GPIO_SFN(2), S3C_GPIO_PULL_NONE); writel(S3C2410_IISCON_IISEN, s3c24xx_i2s.regs + S3C2410_IISCON); s3c24xx_snd_txctrl(0); s3c24xx_snd_rxctrl(0); return 0; }
static int s3c24xx_i2s_trigger(struct snd_pcm_substream *substream, int cmd, struct snd_soc_dai *dai) { int ret = 0; struct snd_soc_pcm_runtime *rtd = substream->private_data; struct s3c_dma_params *dma_data = snd_soc_dai_get_dma_data(rtd->dai->cpu_dai, substream); pr_debug("Entered %s\n", __func__); switch (cmd) { case SNDRV_PCM_TRIGGER_START: case SNDRV_PCM_TRIGGER_RESUME: case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: if (!s3c24xx_snd_is_clkmaster()) { ret = s3c24xx_snd_lrsync(); if (ret) goto exit_err; } if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) s3c24xx_snd_rxctrl(1); else s3c24xx_snd_txctrl(1); s3c2410_dma_ctrl(dma_data->channel, S3C2410_DMAOP_STARTED); break; case SNDRV_PCM_TRIGGER_STOP: case SNDRV_PCM_TRIGGER_SUSPEND: case SNDRV_PCM_TRIGGER_PAUSE_PUSH: if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) s3c24xx_snd_rxctrl(0); else s3c24xx_snd_txctrl(0); break; default: ret = -EINVAL; break; } exit_err: return ret; }
static int s3c24xx_i2s_trigger(struct snd_pcm_substream *substream, int cmd, struct snd_soc_dai *dai) { int ret = 0; pr_debug("Entered %s\n", __func__); switch (cmd) { case SNDRV_PCM_TRIGGER_START: case SNDRV_PCM_TRIGGER_RESUME: case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: if (!s3c24xx_snd_is_clkmaster()) { ret = s3c24xx_snd_lrsync(); if (ret) goto exit_err; } if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) s3c24xx_snd_rxctrl(1); else s3c24xx_snd_txctrl(1); break; case SNDRV_PCM_TRIGGER_STOP: case SNDRV_PCM_TRIGGER_SUSPEND: case SNDRV_PCM_TRIGGER_PAUSE_PUSH: if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) s3c24xx_snd_rxctrl(0); else s3c24xx_snd_txctrl(0); break; default: ret = -EINVAL; break; } exit_err: return ret; }