@@ -90,8 +90,9 @@ static int lpass_cpu_daiops_hw_params(struct snd_pcm_substream *substream,
return bitwidth;
}
- regval = LPAIF_I2SCTL(v, LOOPBACK_DISABLE);
- regval |= LPAIF_I2SCTL(v, WSSRC_INTERNAL);
+ /* default to Loopback disable & wssrc internal */
+ regval = dai_data->loopback << (LPAIF_I2SCTL(v, LOOPBACK_SHIFT));
+ regval |= dai_data->wssrc << (LPAIF_I2SCTL(v, WSSRC_SHIFT));
switch (bitwidth) {
case 16:
@@ -172,6 +173,28 @@ static int lpass_cpu_daiops_hw_params(struct snd_pcm_substream *substream,
return ret;
}
+ /* Overwrite spk & mic mode bits with device tree value if specified */
+ if (dai_data->spkmode != 0) {
+ regval = dai_data->spkmode << (LPAIF_I2SCTL(v, SPKMODE_SHIFT));
+ ret = regmap_update_bits(drvdata->lpaif_map,
+ LPAIF_I2SCTL_REG(drvdata->variant, dai->driver->id),
+ LPAIF_I2SCTL(v, SPKMODE_MASK), regval);
+ if (ret)
+ dev_err(dai->dev, "error writing to i2sctl reg: %d\n",
+ ret);
+ }
+
+
+ if (dai_data->micmode != 0) {
+ regval = dai_data->micmode << (LPAIF_I2SCTL(v, MICMODE_SHIFT));
+ ret = regmap_update_bits(drvdata->lpaif_map,
+ LPAIF_I2SCTL_REG(drvdata->variant, dai->driver->id),
+ LPAIF_I2SCTL(v, MICMODE_MASK), regval);
+ if (ret)
+ dev_err(dai->dev, "error writing to i2sctl reg: %d\n",
+ ret);
+ }
+
ret = clk_set_rate(dai_data->bit_clk, rate * bitwidth * 2);
if (ret) {
dev_err(dai->dev, "error setting mi2s bitclk to %u: %d\n",
@@ -423,6 +446,46 @@ static bool lpass_cpu_regmap_volatile(struct device *dev, unsigned int reg)
.cache_type = REGCACHE_FLAT,
};
+static void of_qcom_parse_dai_data(struct device *dev,
+ struct lpass_data *drvdata)
+{
+ struct device_node *node;
+ struct lpass_dai *dai;
+ int ret;
+
+ for_each_child_of_node(dev->of_node, node) {
+ int id;
+
+ ret = of_property_read_u32(node, "id", &id);
+ if (ret || id < 0 || id >= LPASS_MAX_MI2S_PORTS) {
+ dev_err(dev, "valid dai id not found:%d\n", ret);
+ continue;
+ }
+
+ dai = drvdata->dai_priv[id];
+ switch (id) {
+ case MI2S_PRIMARY... MI2S_QUATERNARY:
+ /* MI2S specific properties */
+ ret = of_property_read_u32(node, "qcom,spkmode-mask",
+ &dai->spkmode);
+
+ ret = of_property_read_u32(node, "qcom,micmode-mask",
+ &dai->micmode);
+
+ ret = of_property_read_u32(node, "qcom,wssrc-mask",
+ &dai->wssrc);
+
+ ret = of_property_read_u32(node, "qcom,loopback-mask",
+ &dai->loopback);
+
+ break;
+ default:
+ dev_err(dev, "valid dai not found:%d\n", id);
+ break;
+ }
+ }
+}
+
static int lpass_init_dai_clocks(struct device *dev,
struct lpass_data *drvdata)
{
@@ -501,6 +564,9 @@ int asoc_qcom_lpass_cpu_platform_probe(struct platform_device *pdev)
GFP_KERNEL);
}
+ /* parse dai data from dts */
+ of_qcom_parse_dai_data(dev, drvdata);
+
ret = lpass_init_dai_clocks(dev, drvdata);
if (ret) {
dev_err(&pdev->dev, "error intializing dai clock: %d\n", ret);
@@ -12,6 +12,7 @@
#include <linux/compiler.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>
+#include <dt-bindings/sound/qcom,lpass.h>
#define LPASS_AHBIX_CLOCK_FREQUENCY 131072000
#define LPASS_MAX_MI2S_PORTS (8)
@@ -23,6 +24,11 @@
struct lpass_dai {
struct clk *osr_clk;
struct clk *bit_clk;
+
+ uint32_t spkmode;
+ uint32_t micmode;
+ uint32_t wssrc;
+ uint32_t loopback;
};
/* Both the CPU DAI and platform drivers will access this data */
Few dai configuration depends on board layout and use cases. Add new variables in dai_data to configure dai modes based on values defined in device tree configuration of board. Signed-off-by: Ajit Pandey <ajitp@codeaurora.org> --- sound/soc/qcom/lpass-cpu.c | 70 ++++++++++++++++++++++++++++++++++++++++++++-- sound/soc/qcom/lpass.h | 6 ++++ 2 files changed, 74 insertions(+), 2 deletions(-)