From bee149c530bfeffe9f7f8f0e8deba79a97d63f6e Mon Sep 17 00:00:00 2001
From: Liangbin Lian <jjm2473@gmail.com>
Date: Fri, 21 Mar 2025 19:06:12 +0800
Subject: [PATCH] target/rockchip: kernel add rockchip_dmc.h

---
 .../files/include/soc/rockchip/rockchip_dmc.h | 131 ++++++++++++++++++
 1 file changed, 131 insertions(+)
 create mode 100644 target/linux/rockchip/files/include/soc/rockchip/rockchip_dmc.h

diff --git a/target/linux/rockchip/files/include/soc/rockchip/rockchip_dmc.h b/target/linux/rockchip/files/include/soc/rockchip/rockchip_dmc.h
new file mode 100644
index 0000000000..f115cdcec2
--- /dev/null
+++ b/target/linux/rockchip/files/include/soc/rockchip/rockchip_dmc.h
@@ -0,0 +1,131 @@
+/*
+ * Copyright (c) 2017, Fuzhou Rockchip Electronics Co., Ltd
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ */
+#ifndef __SOC_ROCKCHIP_DMC_H
+#define __SOC_ROCKCHIP_DMC_H
+
+#include <linux/devfreq.h>
+
+/* for lcdc_type */
+#define SCREEN_NULL		0
+#define SCREEN_RGB		1
+#define SCREEN_LVDS		2
+#define SCREEN_DUAL_LVDS	3
+#define SCREEN_MCU		4
+#define SCREEN_TVOUT		5
+#define SCREEN_HDMI		6
+#define SCREEN_MIPI		7
+#define SCREEN_DUAL_MIPI	8
+#define SCREEN_EDP		9
+#define SCREEN_TVOUT_TEST	10
+#define SCREEN_LVDS_10BIT	11
+#define SCREEN_DUAL_LVDS_10BIT	12
+#define SCREEN_DP		13
+
+#define DMCFREQ_TABLE_END	~1u
+
+struct freq_map_table {
+	unsigned int min;
+	unsigned int max;
+	unsigned long freq;
+};
+
+struct rl_map_table {
+	unsigned int pn; /* panel number */
+	unsigned int rl; /* readlatency */
+};
+
+struct dmcfreq_common_info {
+	struct device *dev;
+	struct devfreq *devfreq;
+	struct freq_map_table *vop_bw_tbl;
+	struct freq_map_table *vop_frame_bw_tbl;
+	struct rl_map_table *vop_pn_rl_tbl;
+	struct delayed_work msch_rl_work;
+	unsigned long vop_4k_rate;
+	unsigned long vop_req_rate;
+	unsigned int read_latency;
+	unsigned int auto_freq_en;
+	unsigned int stall_time_ns;
+	bool is_msch_rl_work_started;
+	int (*set_msch_readlatency)(unsigned int rl);
+};
+
+struct dmcfreq_vop_info {
+	unsigned int line_bw_mbyte;
+	unsigned int frame_bw_mbyte;
+	unsigned int plane_num;
+	unsigned int plane_num_4k;
+};
+
+#if IS_REACHABLE(CONFIG_ARM_ROCKCHIP_DMC_DEVFREQ)
+void rockchip_dmcfreq_lock(void);
+void rockchip_dmcfreq_lock_nested(void);
+void rockchip_dmcfreq_unlock(void);
+int rockchip_dmcfreq_write_trylock(void);
+void rockchip_dmcfreq_write_unlock(void);
+int rockchip_dmcfreq_wait_complete(void);
+int rockchip_dmcfreq_vop_bandwidth_init(struct dmcfreq_common_info *info);
+int rockchip_dmcfreq_vop_bandwidth_request(struct dmcfreq_vop_info *vop_info);
+void rockchip_dmcfreq_vop_bandwidth_update(struct dmcfreq_vop_info *vop_info);
+unsigned int rockchip_dmcfreq_get_stall_time_ns(void);
+#else
+static inline void rockchip_dmcfreq_lock(void)
+{
+}
+
+static inline void rockchip_dmcfreq_lock_nested(void)
+{
+}
+
+static inline void rockchip_dmcfreq_unlock(void)
+{
+}
+
+static inline int rockchip_dmcfreq_write_trylock(void)
+{
+	return 0;
+}
+
+static inline void rockchip_dmcfreq_write_unlock(void)
+{
+}
+
+static inline int rockchip_dmcfreq_wait_complete(void)
+{
+	return 0;
+}
+
+static inline int
+rockchip_dmcfreq_vop_bandwidth_request(struct dmcfreq_vop_info *vop_info)
+{
+	return 0;
+}
+
+static inline void
+rockchip_dmcfreq_vop_bandwidth_update(struct dmcfreq_vop_info *vop_info)
+{
+}
+
+static inline void
+rockchip_dmcfreq_vop_bandwidth_init(struct dmcfreq_common_info *info)
+{
+}
+
+static inline unsigned int
+rockchip_dmcfreq_get_stall_time_ns(void)
+{
+	return 0;
+}
+#endif
+
+#endif