ASoC: qcom: sc7180: Add support for audio over DP

Add support for audio playback over DP in lpass
sc7180 platform driver. Update lpass_variant
structure for hdmi data configuaration.
Signed-off-by: V Sujith Kumar Reddy <vsujithk@codeaurora.org>
Signed-off-by: Srinivasa Rao <srivasam@codeaurora.org>
Tested-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Reviewed-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/1602134223-2562-8-git-send-email-srivasam@codeaurora.orgSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/qcom/lpass-sc7180.c

@@ -60,14 +60,38 @@ 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 (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);
@@ -85,12 +109,15 @@ static int sc7180_lpass_alloc_dma_channel(struct lpass_data *drvdata,
 		}
 
 		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)
 {
+	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,
@@ -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",