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