diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-6.1/950-0892-ASoC-dwc-Support-set_bclk_ratio.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-6.1/950-0892-ASoC-dwc-Support-set_bclk_ratio.patch | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-6.1/950-0892-ASoC-dwc-Support-set_bclk_ratio.patch b/target/linux/bcm27xx/patches-6.1/950-0892-ASoC-dwc-Support-set_bclk_ratio.patch new file mode 100644 index 0000000000..b18e5f888f --- /dev/null +++ b/target/linux/bcm27xx/patches-6.1/950-0892-ASoC-dwc-Support-set_bclk_ratio.patch @@ -0,0 +1,59 @@ +From 06f794e8cb227249e03893e4b4923ff58556eb60 Mon Sep 17 00:00:00 2001 +From: Phil Elwell <phil@raspberrypi.com> +Date: Thu, 4 Mar 2021 14:49:23 +0000 +Subject: [PATCH] ASoC: dwc: Support set_bclk_ratio + +Signed-off-by: Phil Elwell <phil@raspberrypi.com> +--- + sound/soc/dwc/dwc-i2s.c | 35 +++++++++++++++++++++++++++++++++++ + 1 file changed, 35 insertions(+) + +--- a/sound/soc/dwc/dwc-i2s.c ++++ b/sound/soc/dwc/dwc-i2s.c +@@ -351,11 +351,46 @@ static int dw_i2s_set_fmt(struct snd_soc + return ret; + } + ++static int dw_i2s_set_bclk_ratio(struct snd_soc_dai *cpu_dai, ++ unsigned int ratio) ++{ ++ struct dw_i2s_dev *dev = snd_soc_dai_get_drvdata(cpu_dai); ++ struct i2s_clk_config_data *config = &dev->config; ++ ++ dev_err(dev->dev, "%s(%d)\n", __func__, ratio); ++ switch (ratio) { ++ case 32: ++ config->data_width = 16; ++ dev->ccr = 0x00; ++ dev->xfer_resolution = 0x02; ++ break; ++ ++ case 48: ++ config->data_width = 24; ++ dev->ccr = 0x08; ++ dev->xfer_resolution = 0x04; ++ break; ++ ++ case 64: ++ config->data_width = 32; ++ dev->ccr = 0x10; ++ dev->xfer_resolution = 0x05; ++ break; ++ default: ++ return -EINVAL; ++ } ++ ++ i2s_write_reg(dev->i2s_base, CCR, dev->ccr); ++ ++ return 0; ++} ++ + static const struct snd_soc_dai_ops dw_i2s_dai_ops = { + .hw_params = dw_i2s_hw_params, + .prepare = dw_i2s_prepare, + .trigger = dw_i2s_trigger, + .set_fmt = dw_i2s_set_fmt, ++ .set_bclk_ratio = dw_i2s_set_bclk_ratio, + }; + + #ifdef CONFIG_PM |