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From:   Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
To:     broonie@kernel.org
Cc:     perex@perex.cz, tiwai@suse.com, lgirdwood@gmail.com,
        ckeepax@opensource.cirrus.com, kuninori.morimoto.gx@renesas.com,
        linux-kernel@vger.kernel.org, pierre-louis.bossart@linux.intel.com,
        alsa-devel@alsa-project.org,
        Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Subject: [PATCH 2/4] ASoC: qcom: audioreach: add support for DISPLAY PORT SINK module
Date:   Tue,  9 May 2023 12:22:00 +0100
Message-Id: <20230509112202.21471-3-srinivas.kandagatla@linaro.org>
In-Reply-To: <20230509112202.21471-1-srinivas.kandagatla@linaro.org>
References: <20230509112202.21471-1-srinivas.kandagatla@linaro.org>
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Add support for DISPLAY PORT SINK module and associated configuration.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
---
 sound/soc/qcom/qdsp6/audioreach.c | 75 +++++++++++++++++++++++++++++++
 sound/soc/qcom/qdsp6/audioreach.h | 12 +++++
 2 files changed, 87 insertions(+)

diff --git a/sound/soc/qcom/qdsp6/audioreach.c b/sound/soc/qcom/qdsp6/audioreach.c
index 1e0c918eb576..8d9410dcbd45 100644
--- a/sound/soc/qcom/qdsp6/audioreach.c
+++ b/sound/soc/qcom/qdsp6/audioreach.c
@@ -196,6 +196,12 @@ struct apm_codec_dma_module_intf_cfg {
 
 #define APM_CDMA_INTF_CFG_PSIZE ALIGN(sizeof(struct apm_codec_dma_module_intf_cfg), 8)
 
+struct apm_display_port_module_intf_cfg {
+	struct apm_module_param_data param_data;
+	struct param_id_display_port_intf_cfg cfg;
+} __packed;
+#define APM_DP_INTF_CFG_PSIZE ALIGN(sizeof(struct apm_display_port_module_intf_cfg), 8)
+
 static void *__audioreach_alloc_pkt(int payload_size, uint32_t opcode, uint32_t token,
 				    uint32_t src_port, uint32_t dest_port, bool has_cmd_hdr)
 {
@@ -582,6 +588,72 @@ int audioreach_graph_send_cmd_sync(struct q6apm_graph *graph, struct gpr_pkt *pk
 }
 EXPORT_SYMBOL_GPL(audioreach_graph_send_cmd_sync);
 
+static int audioreach_display_port_set_media_format(struct q6apm_graph *graph,
+						    struct audioreach_module *module,
+						    struct audioreach_module_config *cfg)
+{
+	struct apm_display_port_module_intf_cfg *intf_cfg;
+	struct apm_module_frame_size_factor_cfg *fs_cfg;
+	struct apm_module_param_data *param_data;
+	struct apm_module_hw_ep_mf_cfg *hw_cfg;
+	int ic_sz, ep_sz, fs_sz, dl_sz;
+	int rc, payload_size;
+	struct gpr_pkt *pkt;
+	void *p;
+
+	ic_sz = APM_DP_INTF_CFG_PSIZE;
+	ep_sz = APM_HW_EP_CFG_PSIZE;
+	fs_sz = APM_FS_CFG_PSIZE;
+	dl_sz = 0;
+
+	payload_size = ic_sz + ep_sz + fs_sz + dl_sz;
+
+	pkt = audioreach_alloc_apm_cmd_pkt(payload_size, APM_CMD_SET_CFG, 0);
+	if (IS_ERR(pkt))
+		return PTR_ERR(pkt);
+
+	p = (void *)pkt + GPR_HDR_SIZE + APM_CMD_HDR_SIZE;
+
+	hw_cfg = p;
+	param_data = &hw_cfg->param_data;
+	param_data->module_instance_id = module->instance_id;
+	param_data->error_code = 0;
+	param_data->param_id = PARAM_ID_HW_EP_MF_CFG;
+	param_data->param_size = ep_sz - APM_MODULE_PARAM_DATA_SIZE;
+
+	hw_cfg->mf.sample_rate = cfg->sample_rate;
+	hw_cfg->mf.bit_width = cfg->bit_width;
+	hw_cfg->mf.num_channels = cfg->num_channels;
+	hw_cfg->mf.data_format = module->data_format;
+	p += ep_sz;
+
+	fs_cfg = p;
+	param_data = &fs_cfg->param_data;
+	param_data->module_instance_id = module->instance_id;
+	param_data->error_code = 0;
+	param_data->param_id = PARAM_ID_HW_EP_FRAME_SIZE_FACTOR;
+	param_data->param_size = fs_sz - APM_MODULE_PARAM_DATA_SIZE;
+	fs_cfg->frame_size_factor = 1;
+	p += fs_sz;
+
+	intf_cfg = p;
+	param_data = &intf_cfg->param_data;
+	param_data->module_instance_id = module->instance_id;
+	param_data->error_code = 0;
+	param_data->param_id = PARAM_ID_DISPLAY_PORT_INTF_CFG;
+	param_data->param_size = ic_sz - APM_MODULE_PARAM_DATA_SIZE;
+
+	intf_cfg->cfg.channel_allocation = cfg->channel_allocation;
+	intf_cfg->cfg.mst_idx = 0;
+	intf_cfg->cfg.dptx_idx = cfg->dp_idx;
+
+	rc = q6apm_send_cmd_sync(graph->apm, pkt, 0);
+
+	kfree(pkt);
+
+	return rc;
+}
+
 /* LPASS Codec DMA port Module Media Format Setup */
 static int audioreach_codec_dma_set_media_format(struct q6apm_graph *graph,
 						 struct audioreach_module *module,
@@ -1122,6 +1194,9 @@ int audioreach_set_media_format(struct q6apm_graph *graph, struct audioreach_mod
 	case MODULE_ID_PCM_CNV:
 		rc = audioreach_pcm_set_media_format(graph, module, cfg);
 		break;
+	case MODULE_ID_DISPLAY_PORT_SINK:
+		rc = audioreach_display_port_set_media_format(graph, module, cfg);
+		break;
 	case MODULE_ID_I2S_SOURCE:
 	case MODULE_ID_I2S_SINK:
 		rc = audioreach_i2s_set_media_format(graph, module, cfg);
diff --git a/sound/soc/qcom/qdsp6/audioreach.h b/sound/soc/qcom/qdsp6/audioreach.h
index 1d1d47d47d40..3ebb81cd7cb0 100644
--- a/sound/soc/qcom/qdsp6/audioreach.h
+++ b/sound/soc/qcom/qdsp6/audioreach.h
@@ -22,6 +22,7 @@ struct q6apm_graph;
 #define MODULE_ID_I2S_SINK		0x0700100A
 #define MODULE_ID_I2S_SOURCE		0x0700100B
 #define MODULE_ID_DATA_LOGGING		0x0700101A
+#define MODULE_ID_DISPLAY_PORT_SINK	0x07001069
 
 #define APM_CMD_GET_SPF_STATE		0x01001021
 #define APM_CMD_RSP_GET_SPF_STATE	0x02001007
@@ -444,6 +445,15 @@ struct param_id_i2s_intf_cfg {
 #define PORT_ID_I2S_OUPUT		1
 #define I2S_STACK_SIZE			2048
 
+#define PARAM_ID_DISPLAY_PORT_INTF_CFG		0x08001154
+
+struct param_id_display_port_intf_cfg {
+	uint32_t channel_allocation;
+	/* Multi-Steam Transport index */
+	uint32_t mst_idx;
+	uint32_t dptx_idx;
+} __packed;
+
 #define PARAM_ID_HW_EP_MF_CFG			0x08001017
 struct param_id_hw_ep_mf {
 	uint32_t sample_rate;
@@ -702,6 +712,8 @@ struct audioreach_module_config {
 	u16	data_format;
 	u16	num_channels;
 	u16	active_channels_mask;
+	u16	dp_idx;
+	u32	channel_allocation;
 	u32	sd_line_mask;
 	int	fmt;
 	u8 channel_map[AR_PCM_MAX_NUM_CHANNEL];
-- 
2.21.0