video: driver: refine core state machine

introduced core error state and added changes
to refine core state machine.

Change-Id: Ib3b94fd3798e902b7a6cfc5de45820558c89806e
Signed-off-by: Govindaraj Rajagopal <quic_grajagop@quicinc.com>

driver/vidc/inc/msm_vidc_state.h

@@ -0,0 +1,59 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (c) 2020-2021, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved.
+ */
+
+#ifndef _MSM_VIDC_STATE_H_
+#define _MSM_VIDC_STATE_H_
+
+#include "msm_vidc_internal.h"
+
+struct msm_vidc_core;
+
+#define FOREACH_CORE_STATE(CORE_STATE) {               \
+	CORE_STATE(CORE_DEINIT)                        \
+	CORE_STATE(CORE_INIT_WAIT)                     \
+	CORE_STATE(CORE_INIT)                          \
+	CORE_STATE(CORE_ERROR)                         \
+}
+
+enum msm_vidc_core_state FOREACH_CORE_STATE(GENERATE_MSM_VIDC_ENUM);
+
+enum msm_vidc_core_sub_state {
+	CORE_SUBSTATE_NONE                   = 0x0,
+	CORE_SUBSTATE_POWER_ENABLE           = BIT(0),
+	CORE_SUBSTATE_GDSC_HANDOFF           = BIT(1),
+	CORE_SUBSTATE_PM_SUSPEND             = BIT(2),
+	CORE_SUBSTATE_FW_PWR_CTRL            = BIT(3),
+	CORE_SUBSTATE_PAGE_FAULT             = BIT(4),
+	CORE_SUBSTATE_CPU_WATCHDOG           = BIT(5),
+	CORE_SUBSTATE_VIDEO_UNRESPONSIVE     = BIT(6),
+	CORE_SUBSTATE_MAX                    = BIT(7),
+};
+
+enum msm_vidc_core_event_type {
+	CORE_EVENT_NONE                      = BIT(0),
+	CORE_EVENT_UPDATE_SUB_STATE          = BIT(1),
+};
+
+struct msm_vidc_core_state_handle {
+	enum msm_vidc_core_state   state;
+	int                      (*handle)(struct msm_vidc_core *core,
+				   enum msm_vidc_core_event_type type,
+				   struct msm_vidc_event_data *data);
+};
+
+enum msm_vidc_allow msm_vidc_allow_core_state_change(
+	struct msm_vidc_core *core,
+	enum msm_vidc_core_state req_state);
+int msm_vidc_update_core_state(struct msm_vidc_core *core,
+	enum msm_vidc_core_state request_state, const char *func);
+bool core_in_valid_state(struct msm_vidc_core *core);
+bool is_core_state(struct msm_vidc_core *core, enum msm_vidc_core_state state);
+bool is_core_sub_state(struct msm_vidc_core *core,
+	enum msm_vidc_core_sub_state sub_state);
+const char *core_state_name(enum msm_vidc_core_state state);
+const char *core_sub_state_name(enum msm_vidc_core_sub_state sub_state);
+
+#endif // _MSM_VIDC_STATE_H_