media: amphion: add helper function to get id name

convert numbers into meaningful names,
then it can improve the log readability

Fixes: 9f599f35 ("media: amphion: add vpu core driver")
Signed-off-by: Ming Qian <ming.qian@nxp.com>
Reviewed-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>

drivers/media/platform/amphion/vdec.c

@@ -299,7 +299,8 @@ static int vdec_update_state(struct vpu_inst *inst, enum vpu_codec_state state,
 		vdec->state = VPU_CODEC_STATE_DYAMIC_RESOLUTION_CHANGE;
 
 	if (inst->state != pre_state)
-		vpu_trace(inst->dev, "[%d] %d -> %d\n", inst->id, pre_state, inst->state);
+		vpu_trace(inst->dev, "[%d] %s -> %s\n", inst->id,
+			  vpu_codec_state_name(pre_state), vpu_codec_state_name(inst->state));
 
 	if (inst->state == VPU_CODEC_STATE_DYAMIC_RESOLUTION_CHANGE)
 		vdec_handle_resolution_change(inst);
@@ -1037,8 +1038,8 @@ static int vdec_response_frame(struct vpu_inst *inst, struct vb2_v4l2_buffer *vb
 		return -EINVAL;
 	}
 
-	dev_dbg(inst->dev, "[%d] state = %d, alloc fs %d, tag = 0x%x\n",
-		inst->id, inst->state, vbuf->vb2_buf.index, vdec->seq_tag);
+	dev_dbg(inst->dev, "[%d] state = %s, alloc fs %d, tag = 0x%x\n",
+		inst->id, vpu_codec_state_name(inst->state), vbuf->vb2_buf.index, vdec->seq_tag);
 	vpu_buf = to_vpu_vb2_buffer(vbuf);
 
 	memset(&info, 0, sizeof(info));
@@ -1400,7 +1401,7 @@ static void vdec_abort(struct vpu_inst *inst)
 	struct vpu_rpc_buffer_desc desc;
 	int ret;
 
-	vpu_trace(inst->dev, "[%d] state = %d\n", inst->id, inst->state);
+	vpu_trace(inst->dev, "[%d] state = %s\n", inst->id, vpu_codec_state_name(inst->state));
 
 	vdec->aborting = true;
 	vpu_iface_add_scode(inst, SCODE_PADDING_ABORT);

drivers/media/platform/amphion/vpu.h

@@ -355,6 +355,9 @@ void vpu_inst_record_flow(struct vpu_inst *inst, u32 flow);
 int vpu_core_driver_init(void);
 void vpu_core_driver_exit(void);
 
+const char *vpu_id_name(u32 id);
+const char *vpu_codec_state_name(enum vpu_codec_state state);
+
 extern bool debug;
 #define vpu_trace(dev, fmt, arg...)					\
 	do {								\

drivers/media/platform/amphion/vpu_cmds.c

@@ -96,7 +96,7 @@ static struct vpu_cmd_t *vpu_alloc_cmd(struct vpu_inst *inst, u32 id, void *data
 	cmd->id = id;
 	ret = vpu_iface_pack_cmd(inst->core, cmd->pkt, inst->id, id, data);
 	if (ret) {
-		dev_err(inst->dev, "iface pack cmd(%d) fail\n", id);
+		dev_err(inst->dev, "iface pack cmd %s fail\n", vpu_id_name(id));
 		vfree(cmd->pkt);
 		vfree(cmd);
 		return NULL;
@@ -123,14 +123,14 @@ static int vpu_session_process_cmd(struct vpu_inst *inst, struct vpu_cmd_t *cmd)
 {
 	int ret;
 
-	dev_dbg(inst->dev, "[%d]send cmd(0x%x)\n", inst->id, cmd->id);
+	dev_dbg(inst->dev, "[%d]send cmd %s\n", inst->id, vpu_id_name(cmd->id));
 	vpu_iface_pre_send_cmd(inst);
 	ret = vpu_cmd_send(inst->core, cmd->pkt);
 	if (!ret) {
 		vpu_iface_post_send_cmd(inst);
 		vpu_inst_record_flow(inst, cmd->id);
 	} else {
-		dev_err(inst->dev, "[%d] iface send cmd(0x%x) fail\n", inst->id, cmd->id);
+		dev_err(inst->dev, "[%d] iface send cmd %s fail\n", inst->id, vpu_id_name(cmd->id));
 	}
 
 	return ret;
@@ -147,7 +147,8 @@ static void vpu_process_cmd_request(struct vpu_inst *inst)
 	list_for_each_entry_safe(cmd, tmp, &inst->cmd_q, list) {
 		list_del_init(&cmd->list);
 		if (vpu_session_process_cmd(inst, cmd))
-			dev_err(inst->dev, "[%d] process cmd(%d) fail\n", inst->id, cmd->id);
+			dev_err(inst->dev, "[%d] process cmd %s fail\n",
+				inst->id, vpu_id_name(cmd->id));
 		if (cmd->request) {
 			inst->pending = (void *)cmd;
 			break;
@@ -337,7 +338,7 @@ static int vpu_session_send_cmd(struct vpu_inst *inst, u32 id, void *data)
 
 exit:
 	if (ret)
-		dev_err(inst->dev, "[%d] send cmd(0x%x) fail\n", inst->id, id);
+		dev_err(inst->dev, "[%d] send cmd %s fail\n", inst->id, vpu_id_name(id));
 
 	return ret;
 }

drivers/media/platform/amphion/vpu_dbg.c

@@ -67,7 +67,7 @@ static int vpu_dbg_instance(struct seq_file *s, void *data)
 	num = scnprintf(str, sizeof(str), "tgig = %d,pid = %d\n", inst->tgid, inst->pid);
 	if (seq_write(s, str, num))
 		return 0;
-	num = scnprintf(str, sizeof(str), "state = %d\n", inst->state);
+	num = scnprintf(str, sizeof(str), "state = %s\n", vpu_codec_state_name(inst->state));
 	if (seq_write(s, str, num))
 		return 0;
 	num = scnprintf(str, sizeof(str),
@@ -188,9 +188,9 @@ static int vpu_dbg_instance(struct seq_file *s, void *data)
 
 		if (!inst->flows[idx])
 			continue;
-		num = scnprintf(str, sizeof(str), "\t[%s]0x%x\n",
+		num = scnprintf(str, sizeof(str), "\t[%s] %s\n",
 				inst->flows[idx] >= VPU_MSG_ID_NOOP ? "M" : "C",
-				inst->flows[idx]);
+				vpu_id_name(inst->flows[idx]));
 		if (seq_write(s, str, num)) {
 			mutex_unlock(&inst->core->cmd_lock);
 			return 0;

drivers/media/platform/amphion/vpu_helpers.c

@@ -11,6 +11,7 @@
 #include <linux/module.h>
 #include <linux/platform_device.h>
 #include "vpu.h"
+#include "vpu_defs.h"
 #include "vpu_core.h"
 #include "vpu_rpc.h"
 #include "vpu_helpers.h"
@@ -447,3 +448,63 @@ int vpu_find_src_by_dst(struct vpu_pair *pairs, u32 cnt, u32 dst)
 
 	return -EINVAL;
 }
+
+const char *vpu_id_name(u32 id)
+{
+	switch (id) {
+	case VPU_CMD_ID_NOOP: return "noop";
+	case VPU_CMD_ID_CONFIGURE_CODEC: return "configure codec";
+	case VPU_CMD_ID_START: return "start";
+	case VPU_CMD_ID_STOP: return "stop";
+	case VPU_CMD_ID_ABORT: return "abort";
+	case VPU_CMD_ID_RST_BUF: return "reset buf";
+	case VPU_CMD_ID_SNAPSHOT: return "snapshot";
+	case VPU_CMD_ID_FIRM_RESET: return "reset firmware";
+	case VPU_CMD_ID_UPDATE_PARAMETER: return "update parameter";
+	case VPU_CMD_ID_FRAME_ENCODE: return "encode frame";
+	case VPU_CMD_ID_SKIP: return "skip";
+	case VPU_CMD_ID_FS_ALLOC: return "alloc fb";
+	case VPU_CMD_ID_FS_RELEASE: return "release fb";
+	case VPU_CMD_ID_TIMESTAMP: return "timestamp";
+	case VPU_CMD_ID_DEBUG: return "debug";
+	case VPU_MSG_ID_RESET_DONE: return "reset done";
+	case VPU_MSG_ID_START_DONE: return "start done";
+	case VPU_MSG_ID_STOP_DONE: return "stop done";
+	case VPU_MSG_ID_ABORT_DONE: return "abort done";
+	case VPU_MSG_ID_BUF_RST: return "buf reset done";
+	case VPU_MSG_ID_MEM_REQUEST: return "mem request";
+	case VPU_MSG_ID_PARAM_UPD_DONE: return "param upd done";
+	case VPU_MSG_ID_FRAME_INPUT_DONE: return "frame input done";
+	case VPU_MSG_ID_ENC_DONE: return "encode done";
+	case VPU_MSG_ID_DEC_DONE: return "frame display";
+	case VPU_MSG_ID_FRAME_REQ: return "fb request";
+	case VPU_MSG_ID_FRAME_RELEASE: return "fb release";
+	case VPU_MSG_ID_SEQ_HDR_FOUND: return "seq hdr found";
+	case VPU_MSG_ID_RES_CHANGE: return "resolution change";
+	case VPU_MSG_ID_PIC_HDR_FOUND: return "pic hdr found";
+	case VPU_MSG_ID_PIC_DECODED: return "picture decoded";
+	case VPU_MSG_ID_PIC_EOS: return "eos";
+	case VPU_MSG_ID_FIFO_LOW: return "fifo low";
+	case VPU_MSG_ID_BS_ERROR: return "bs error";
+	case VPU_MSG_ID_UNSUPPORTED: return "unsupported";
+	case VPU_MSG_ID_FIRMWARE_XCPT: return "exception";
+	case VPU_MSG_ID_PIC_SKIPPED: return "skipped";
+	}
+	return "<unknown>";
+}
+
+const char *vpu_codec_state_name(enum vpu_codec_state state)
+{
+	switch (state) {
+	case VPU_CODEC_STATE_DEINIT: return "initialization";
+	case VPU_CODEC_STATE_CONFIGURED: return "configured";
+	case VPU_CODEC_STATE_START: return "start";
+	case VPU_CODEC_STATE_STARTED: return "started";
+	case VPU_CODEC_STATE_ACTIVE: return "active";
+	case VPU_CODEC_STATE_SEEK: return "seek";
+	case VPU_CODEC_STATE_STOP: return "stop";
+	case VPU_CODEC_STATE_DRAIN: return "drain";
+	case VPU_CODEC_STATE_DYAMIC_RESOLUTION_CHANGE: return "resolution change";
+	}
+	return "<unknown>";
+}

drivers/media/platform/amphion/vpu_msgs.c

@@ -210,7 +210,7 @@ static int vpu_session_handle_msg(struct vpu_inst *inst, struct vpu_rpc_event *m
 		return -EINVAL;
 
 	msg_id = ret;
-	dev_dbg(inst->dev, "[%d] receive event(0x%x)\n", inst->id, msg_id);
+	dev_dbg(inst->dev, "[%d] receive event(%s)\n", inst->id, vpu_id_name(msg_id));
 
 	for (i = 0; i < ARRAY_SIZE(handlers); i++) {
 		if (handlers[i].id == msg_id) {