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Subject[PATCH v8 04/10] ASoC: qcom: Add helper function to get dma control and lpaif handle
Date
From: Srinivasa Rao Mandadapu <srivasam@codeaurora.org>

Add support function to get dma control and lpaif handle to avoid
repeated code in platform driver

Signed-off-by: Srinivasa Rao Mandadapu <srivasam@codeaurora.org>
Co-developed-by: Venkata Prasad Potturu <potturu@codeaurora.org>
Signed-off-by: Venkata Prasad Potturu <potturu@codeaurora.org>
Reviewed-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
---
sound/soc/qcom/lpass-platform.c | 113 +++++++++++++++++++++++-----------------
1 file changed, 66 insertions(+), 47 deletions(-)

diff --git a/sound/soc/qcom/lpass-platform.c b/sound/soc/qcom/lpass-platform.c
index a44162c..5d77240 100644
--- a/sound/soc/qcom/lpass-platform.c
+++ b/sound/soc/qcom/lpass-platform.c
@@ -177,6 +177,49 @@ static int lpass_platform_pcmops_close(struct snd_soc_component *component,
return 0;
}

+static void __lpass_get_lpaif_handle(struct snd_pcm_substream *substream,
+ struct snd_soc_component *component,
+ struct lpaif_dmactl **dmactl, int *id, struct regmap **map)
+{
+ struct snd_soc_pcm_runtime *soc_runtime = asoc_substream_to_rtd(substream);
+ struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(soc_runtime, 0);
+ struct lpass_data *drvdata = snd_soc_component_get_drvdata(component);
+ struct snd_pcm_runtime *rt = substream->runtime;
+ struct lpass_pcm_data *pcm_data = rt->private_data;
+ struct lpass_variant *v = drvdata->variant;
+ int dir = substream->stream;
+ unsigned int dai_id = cpu_dai->driver->id;
+ struct lpaif_dmactl *l_dmactl = NULL;
+ struct regmap *l_map = NULL;
+ int l_id = 0;
+
+ switch (dai_id) {
+ case MI2S_PRIMARY ... MI2S_QUINARY:
+ if (dir == SNDRV_PCM_STREAM_PLAYBACK) {
+ l_id = pcm_data->dma_ch;
+ l_dmactl = drvdata->rd_dmactl;
+ } else {
+ l_dmactl = drvdata->wr_dmactl;
+ l_id = pcm_data->dma_ch - v->wrdma_channel_start;
+ }
+ l_map = drvdata->lpaif_map;
+ break;
+ case LPASS_DP_RX:
+ l_id = pcm_data->dma_ch;
+ l_dmactl = drvdata->hdmi_rd_dmactl;
+ l_map = drvdata->hdmiif_map;
+ break;
+ default:
+ break;
+ }
+ if (dmactl)
+ *dmactl = l_dmactl;
+ if (id)
+ *id = l_id;
+ if (map)
+ *map = l_map;
+}
+
static int lpass_platform_pcmops_hw_params(struct snd_soc_component *component,
struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params)
@@ -191,21 +234,15 @@ static int lpass_platform_pcmops_hw_params(struct snd_soc_component *component,
unsigned int channels = params_channels(params);
unsigned int regval;
struct lpaif_dmactl *dmactl;
- int id, dir = substream->stream;
+ int id;
int bitwidth;
int ret, dma_port = pcm_data->i2s_port + v->dmactl_audif_start;
unsigned int dai_id = cpu_dai->driver->id;

- if (dir == SNDRV_PCM_STREAM_PLAYBACK) {
- id = pcm_data->dma_ch;
- if (dai_id == LPASS_DP_RX)
- dmactl = drvdata->hdmi_rd_dmactl;
- else
- dmactl = drvdata->rd_dmactl;
-
- } else {
- dmactl = drvdata->wr_dmactl;
- id = pcm_data->dma_ch - v->wrdma_channel_start;
+ __lpass_get_lpaif_handle(substream, component, &dmactl, &id, NULL);
+ if (!dmactl) {
+ dev_err(soc_runtime->dev, "failed to get dmactl handle\n");
+ return -EINVAL;
}

bitwidth = snd_pcm_format_width(format);
@@ -350,10 +387,11 @@ static int lpass_platform_pcmops_hw_free(struct snd_soc_component *component,
struct regmap *map;
unsigned int dai_id = cpu_dai->driver->id;

- if (dai_id == LPASS_DP_RX)
- map = drvdata->hdmiif_map;
- else
- map = drvdata->lpaif_map;
+ __lpass_get_lpaif_handle(substream, component, NULL, NULL, &map);
+ if (!map) {
+ dev_err(soc_runtime->dev, "failed to get dmactl handle\n");
+ return -EINVAL;
+ }

reg = LPAIF_DMACTL_REG(v, pcm_data->dma_ch, substream->stream, dai_id);
ret = regmap_write(map, reg, 0);
@@ -379,22 +417,12 @@ static int lpass_platform_pcmops_prepare(struct snd_soc_component *component,
int ret, id, ch, dir = substream->stream;
unsigned int dai_id = cpu_dai->driver->id;

-
ch = pcm_data->dma_ch;
- if (dir == SNDRV_PCM_STREAM_PLAYBACK) {
- if (dai_id == LPASS_DP_RX) {
- dmactl = drvdata->hdmi_rd_dmactl;
- map = drvdata->hdmiif_map;
- } else {
- dmactl = drvdata->rd_dmactl;
- map = drvdata->lpaif_map;
- }

- id = pcm_data->dma_ch;
- } else {
- dmactl = drvdata->wr_dmactl;
- id = pcm_data->dma_ch - v->wrdma_channel_start;
- map = drvdata->lpaif_map;
+ __lpass_get_lpaif_handle(substream, component, &dmactl, &id, &map);
+ if (!dmactl) {
+ dev_err(soc_runtime->dev, "failed to get dmactl handle\n");
+ return -EINVAL;
}

ret = regmap_write(map, LPAIF_DMABASE_REG(v, ch, dir, dai_id),
@@ -444,25 +472,15 @@ static int lpass_platform_pcmops_trigger(struct snd_soc_component *component,
struct lpaif_dmactl *dmactl;
struct regmap *map;
int ret, ch, id;
- int dir = substream->stream;
unsigned int reg_irqclr = 0, val_irqclr = 0;
unsigned int reg_irqen = 0, val_irqen = 0, val_mask = 0;
unsigned int dai_id = cpu_dai->driver->id;

ch = pcm_data->dma_ch;
- if (dir == SNDRV_PCM_STREAM_PLAYBACK) {
- id = pcm_data->dma_ch;
- if (dai_id == LPASS_DP_RX) {
- dmactl = drvdata->hdmi_rd_dmactl;
- map = drvdata->hdmiif_map;
- } else {
- dmactl = drvdata->rd_dmactl;
- map = drvdata->lpaif_map;
- }
- } else {
- dmactl = drvdata->wr_dmactl;
- id = pcm_data->dma_ch - v->wrdma_channel_start;
- map = drvdata->lpaif_map;
+ __lpass_get_lpaif_handle(substream, component, &dmactl, &id, &map);
+ if (!dmactl) {
+ dev_err(soc_runtime->dev, "failed to get dmactl handle\n");
+ return -EINVAL;
}

switch (cmd) {
@@ -597,10 +615,11 @@ static snd_pcm_uframes_t lpass_platform_pcmops_pointer(
struct regmap *map;
unsigned int dai_id = cpu_dai->driver->id;

- if (dai_id == LPASS_DP_RX)
- map = drvdata->hdmiif_map;
- else
- map = drvdata->lpaif_map;
+ __lpass_get_lpaif_handle(substream, component, NULL, NULL, &map);
+ if (!map) {
+ dev_err(soc_runtime->dev, "failed to get dmactl handle\n");
+ return -EINVAL;
+ }

ch = pcm_data->dma_ch;

--
Qualcomm India Private Limited, on behalf of Qualcomm Innovation Center, Inc.,
is a member of Code Aurora Forum, a Linux Foundation Collaborative Project.
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