[PATCH v6 5/5] ASoC: qcom: sc7180: Add support for audio over DP

Srinivasa Rao Mandadapu
2020-09-18T06:06:00Z

From: V Sujith Kumar Reddy <vsujithk@codeaurora.org>

Add support for audio playback over DP in lpass sc7180 platform driver.
Update lpass_variant structure for hdmi data configuaration.

Signed-off-by: Srinivasa Rao <srivasam@codeaurora.org>
Signed-off-by: V Sujith Kumar Reddy <vsujithk@codeaurora.org>
---
sound/soc/qcom/lpass-sc7180.c | 116 +++++++++++++++++++++++++++++++++++++-----
1 file changed, 102 insertions(+), 14 deletions(-)

diff --git a/sound/soc/qcom/lpass-sc7180.c b/sound/soc/qcom/lpass-sc7180.c
index 167bf2c..59f115e 100644
--- a/sound/soc/qcom/lpass-sc7180.c
+++ b/sound/soc/qcom/lpass-sc7180.c
@@ -60,38 +60,65 @@ static struct snd_soc_dai_driver sc7180_lpass_cpu_dai_driver[] = {
.probe = &asoc_qcom_lpass_cpu_dai_probe,
.ops = &asoc_qcom_lpass_cpu_dai_ops,
},
+ [LPASS_DP_RX] = {
+ .id = LPASS_DP_RX,
+ .name = "Hdmi",
+ .playback = {
+ .stream_name = "Hdmi Playback",
+ .formats = SNDRV_PCM_FMTBIT_S24,
+ .rates = SNDRV_PCM_RATE_48000,
+ .rate_min = 48000,
+ .rate_max = 48000,
+ .channels_min = 2,
+ .channels_max = 2,
+ },
+ .ops = &asoc_qcom_lpass_hdmi_dai_ops,
+ },
};

static int sc7180_lpass_alloc_dma_channel(struct lpass_data *drvdata,
- int direction)
+ int direction, unsigned int dai_id)
{
struct lpass_variant *v = drvdata->variant;
int chan = 0;

- if (direction == SNDRV_PCM_STREAM_PLAYBACK) {
- chan = find_first_zero_bit(&drvdata->dma_ch_bit_map,
- v->rdma_channels);
+ if (dai_id == LPASS_DP_RX) {
+ if (direction == SNDRV_PCM_STREAM_PLAYBACK) {
+ chan = find_first_zero_bit(&drvdata->hdmi_dma_ch_bit_map,
+ v->hdmi_rdma_channels);
+
+ if (chan >= v->hdmi_rdma_channels)
+ return -EBUSY;
+ }
+ set_bit(chan, &drvdata->hdmi_dma_ch_bit_map);
+ } else {
+ if (direction == SNDRV_PCM_STREAM_PLAYBACK) {
+ chan = find_first_zero_bit(&drvdata->dma_ch_bit_map,
+ v->rdma_channels);

if (chan >= v->rdma_channels)
return -EBUSY;
- } else {
- chan = find_next_zero_bit(&drvdata->dma_ch_bit_map,
+ } else {
+ chan = find_next_zero_bit(&drvdata->dma_ch_bit_map,
v->wrdma_channel_start +
v->wrdma_channels,
v->wrdma_channel_start);

- if (chan >= v->wrdma_channel_start + v->wrdma_channels)
- return -EBUSY;
- }
-
- set_bit(chan, &drvdata->dma_ch_bit_map);
+ if (chan >= v->wrdma_channel_start + v->wrdma_channels)
+ return -EBUSY;
+ }

+ set_bit(chan, &drvdata->dma_ch_bit_map);
+ }
return chan;
}

-static int sc7180_lpass_free_dma_channel(struct lpass_data *drvdata, int chan)
+static int sc7180_lpass_free_dma_channel(struct lpass_data *drvdata, int chan, unsigned int dai_id)
{
- clear_bit(chan, &drvdata->dma_ch_bit_map);
+ if (dai_id == LPASS_DP_RX)
+ clear_bit(chan, &drvdata->hdmi_dma_ch_bit_map);
+ else
+ clear_bit(chan, &drvdata->dma_ch_bit_map);

return 0;
}
@@ -144,6 +171,9 @@ static struct lpass_variant sc7180_data = {
.rdma_reg_base = 0xC000,
.rdma_reg_stride = 0x1000,
.rdma_channels = 5,
+ .hdmi_rdma_reg_base = 0x64000,
+ .hdmi_rdma_reg_stride = 0x1000,
+ .hdmi_rdma_channels = 4,
.dmactl_audif_start = 1,
.wrdma_reg_base = 0x18000,
.wrdma_reg_stride = 0x1000,
@@ -163,7 +193,7 @@ static struct lpass_variant sc7180_data = {
.rdma_dyncclk = REG_FIELD_ID(0xC000, 21, 21, 5, 0x1000),
.rdma_bursten = REG_FIELD_ID(0xC000, 20, 20, 5, 0x1000),
.rdma_wpscnt = REG_FIELD_ID(0xC000, 16, 19, 5, 0x1000),
- .rdma_intf = REG_FIELD_ID(0xC000, 12, 15, 5, 0x1000),
+ .rdma_intf = REG_FIELD_ID(0xC000, 12, 15, 5, 0x1000),
.rdma_fifowm = REG_FIELD_ID(0xC000, 1, 5, 5, 0x1000),
.rdma_enable = REG_FIELD_ID(0xC000, 0, 0, 5, 0x1000),

@@ -174,6 +204,64 @@ static struct lpass_variant sc7180_data = {
.wrdma_fifowm = REG_FIELD_ID(0x18000, 1, 5, 4, 0x1000),
.wrdma_enable = REG_FIELD_ID(0x18000, 0, 0, 4, 0x1000),

+ .hdmi_tx_ctl_addr = 0x1000,
+ .hdmi_legacy_addr = 0x1008,
+ .hdmi_vbit_addr = 0x610c0,
+ .hdmi_ch_lsb_addr = 0x61048,
+ .hdmi_ch_msb_addr = 0x6104c,
+ .ch_stride = 0x8,
+ .hdmi_parity_addr = 0x61034,
+ .hdmi_dmactl_addr = 0x61038,
+ .hdmi_dma_stride = 0x4,
+ .hdmi_DP_addr = 0x610c8,
+ .hdmi_sstream_addr = 0x6101c,
+ .hdmi_irq_reg_base = 0x63000,
+ .hdmi_irq_ports = 1,
+
+ .hdmi_rdma_dyncclk = REG_FIELD_ID(0x64000, 14, 14, 4, 0x1000),
+ .hdmi_rdma_bursten = REG_FIELD_ID(0x64000, 13, 13, 4, 0x1000),
+ .hdmi_rdma_burst8 = REG_FIELD_ID(0x64000, 15, 15, 4, 0x1000),
+ .hdmi_rdma_burst16 = REG_FIELD_ID(0x64000, 16, 16, 4, 0x1000),
+ .hdmi_rdma_dynburst = REG_FIELD_ID(0x64000, 18, 18, 4, 0x1000),
+ .hdmi_rdma_wpscnt = REG_FIELD_ID(0x64000, 10, 12, 4, 0x1000),
+ .hdmi_rdma_fifowm = REG_FIELD_ID(0x64000, 1, 5, 4, 0x1000),
+ .hdmi_rdma_enable = REG_FIELD_ID(0x64000, 0, 0, 4, 0x1000),
+
+ .sstream_en = REG_FIELD(0x6101c, 0, 0),
+ .dma_sel = REG_FIELD(0x6101c, 1, 2),
+ .auto_bbit_en = REG_FIELD(0x6101c, 3, 3),
+ .layout = REG_FIELD(0x6101c, 4, 4),
+ .layout_sp = REG_FIELD(0x6101c, 5, 8),
+ .set_sp_on_en = REG_FIELD(0x6101c, 10, 10),
+ .dp_audio = REG_FIELD(0x6101c, 11, 11),
+ .dp_staffing_en = REG_FIELD(0x6101c, 12, 12),
+ .dp_sp_b_hw_en = REG_FIELD(0x6101c, 13, 13),
+
+ .mute = REG_FIELD(0x610c8, 0, 0),
+ .as_sdp_cc = REG_FIELD(0x610c8, 1, 3),
+ .as_sdp_ct = REG_FIELD(0x610c8, 4, 7),
+ .aif_db4 = REG_FIELD(0x610c8, 8, 15),
+ .frequency = REG_FIELD(0x610c8, 16, 21),
+ .mst_index = REG_FIELD(0x610c8, 28, 29),
+ .dptx_index = REG_FIELD(0x610c8, 30, 31),
+
+ .soft_reset = REG_FIELD(0x1000, 31, 31),
+ .force_reset = REG_FIELD(0x1000, 30, 30),
+
+ .use_hw_chs = REG_FIELD(0x61038, 0, 0),
+ .use_hw_usr = REG_FIELD(0x61038, 1, 1),
+ .hw_chs_sel = REG_FIELD(0x61038, 2, 4),
+ .hw_usr_sel = REG_FIELD(0x61038, 5, 6),
+
+ .replace_vbit = REG_FIELD(0x610c0, 0, 0),
+ .vbit_stream = REG_FIELD(0x610c0, 1, 1),
+
+ .legacy_en = REG_FIELD(0x1008, 0, 0),
+ .calc_en = REG_FIELD(0x61034, 0, 0),
+ .lsb_bits = REG_FIELD(0x61048, 0, 31),
+ .msb_bits = REG_FIELD(0x6104c, 0, 31),
+
+
.clk_name = (const char*[]) {
"pcnoc-sway-clk",
"audio-core",
--
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