1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3  * Copyright (c) 2015, The Linux Foundation. All rights reserved.
4  */
5 
6 #ifndef __DSI_CONNECTOR_H__
7 #define __DSI_CONNECTOR_H__
8 
9 #include <linux/of_platform.h>
10 #include <linux/platform_device.h>
11 
12 #include <drm/drm_bridge.h>
13 #include <drm/drm_crtc.h>
14 #include <drm/drm_mipi_dsi.h>
15 
16 #include "msm_drv.h"
17 #include "disp/msm_disp_snapshot.h"
18 
19 #define DSI_0	0
20 #define DSI_1	1
21 #define DSI_MAX	2
22 
23 struct msm_dsi_phy_shared_timings;
24 struct msm_dsi_phy_clk_request;
25 
26 enum msm_dsi_phy_usecase {
27 	MSM_DSI_PHY_STANDALONE,
28 	MSM_DSI_PHY_MASTER,
29 	MSM_DSI_PHY_SLAVE,
30 };
31 
32 #define DSI_BUS_CLK_MAX		4
33 
34 struct msm_dsi {
35 	struct drm_device *dev;
36 	struct platform_device *pdev;
37 
38 	struct mipi_dsi_host *host;
39 	struct msm_dsi_phy *phy;
40 	const char *te_source;
41 
42 	struct drm_bridge *next_bridge;
43 
44 	struct device *phy_dev;
45 	bool phy_enabled;
46 
47 	int id;
48 };
49 
50 /* dsi manager */
51 int msm_dsi_manager_connector_init(struct msm_dsi *msm_dsi,
52 				   struct drm_encoder *encoder);
53 int msm_dsi_manager_cmd_xfer(int id, const struct mipi_dsi_msg *msg);
54 bool msm_dsi_manager_cmd_xfer_trigger(int id, u32 dma_base, u32 len);
55 int msm_dsi_manager_register(struct msm_dsi *msm_dsi);
56 void msm_dsi_manager_unregister(struct msm_dsi *msm_dsi);
57 void msm_dsi_manager_tpg_enable(void);
58 
59 /* dsi host */
60 struct msm_dsi_host;
61 int msm_dsi_host_xfer_prepare(struct mipi_dsi_host *host,
62 					const struct mipi_dsi_msg *msg);
63 void msm_dsi_host_xfer_restore(struct mipi_dsi_host *host,
64 					const struct mipi_dsi_msg *msg);
65 int msm_dsi_host_cmd_tx(struct mipi_dsi_host *host,
66 					const struct mipi_dsi_msg *msg);
67 int msm_dsi_host_cmd_rx(struct mipi_dsi_host *host,
68 					const struct mipi_dsi_msg *msg);
69 void msm_dsi_host_cmd_xfer_commit(struct mipi_dsi_host *host,
70 					u32 dma_base, u32 len);
71 int msm_dsi_host_enable(struct mipi_dsi_host *host);
72 int msm_dsi_host_disable(struct mipi_dsi_host *host);
73 void msm_dsi_host_enable_irq(struct mipi_dsi_host *host);
74 void msm_dsi_host_disable_irq(struct mipi_dsi_host *host);
75 int msm_dsi_host_power_on(struct mipi_dsi_host *host,
76 			struct msm_dsi_phy_shared_timings *phy_shared_timings,
77 			bool is_bonded_dsi, struct msm_dsi_phy *phy);
78 int msm_dsi_host_power_off(struct mipi_dsi_host *host);
79 int msm_dsi_host_set_display_mode(struct mipi_dsi_host *host,
80 				  const struct drm_display_mode *mode);
81 enum drm_mode_status msm_dsi_host_check_dsc(struct mipi_dsi_host *host,
82 					    const struct drm_display_mode *mode);
83 unsigned long msm_dsi_host_get_mode_flags(struct mipi_dsi_host *host);
84 int msm_dsi_host_register(struct mipi_dsi_host *host);
85 void msm_dsi_host_unregister(struct mipi_dsi_host *host);
86 void msm_dsi_host_set_phy_mode(struct mipi_dsi_host *host,
87 			struct msm_dsi_phy *src_phy);
88 int msm_dsi_host_set_src_pll(struct mipi_dsi_host *host,
89 			struct msm_dsi_phy *src_phy);
90 void msm_dsi_host_reset_phy(struct mipi_dsi_host *host);
91 void msm_dsi_host_get_phy_clk_req(struct mipi_dsi_host *host,
92 	struct msm_dsi_phy_clk_request *clk_req,
93 	bool is_bonded_dsi);
94 void msm_dsi_host_destroy(struct mipi_dsi_host *host);
95 int msm_dsi_host_modeset_init(struct mipi_dsi_host *host,
96 					struct drm_device *dev);
97 int msm_dsi_host_init(struct msm_dsi *msm_dsi);
98 int msm_dsi_runtime_suspend(struct device *dev);
99 int msm_dsi_runtime_resume(struct device *dev);
100 int dsi_link_clk_set_rate_6g(struct msm_dsi_host *msm_host);
101 int dsi_link_clk_set_rate_v2(struct msm_dsi_host *msm_host);
102 int dsi_link_clk_enable_6g(struct msm_dsi_host *msm_host);
103 int dsi_link_clk_enable_v2(struct msm_dsi_host *msm_host);
104 void dsi_link_clk_disable_6g(struct msm_dsi_host *msm_host);
105 void dsi_link_clk_disable_v2(struct msm_dsi_host *msm_host);
106 unsigned long dsi_byte_clk_get_rate(struct mipi_dsi_host *host, bool is_bonded_dsi,
107 				    const struct drm_display_mode *mode);
108 int dsi_tx_buf_alloc_6g(struct msm_dsi_host *msm_host, int size);
109 int dsi_tx_buf_alloc_v2(struct msm_dsi_host *msm_host, int size);
110 void *dsi_tx_buf_get_6g(struct msm_dsi_host *msm_host);
111 void *dsi_tx_buf_get_v2(struct msm_dsi_host *msm_host);
112 void dsi_tx_buf_put_6g(struct msm_dsi_host *msm_host);
113 void msm_dsi_tx_buf_free(struct mipi_dsi_host *mipi_host);
114 int dsi_dma_base_get_6g(struct msm_dsi_host *msm_host, uint64_t *iova);
115 int dsi_dma_base_get_v2(struct msm_dsi_host *msm_host, uint64_t *iova);
116 int dsi_clk_init_v2(struct msm_dsi_host *msm_host);
117 int dsi_clk_init_6g_v2(struct msm_dsi_host *msm_host);
118 int dsi_calc_clk_rate_v2(struct msm_dsi_host *msm_host, bool is_bonded_dsi);
119 int dsi_calc_clk_rate_6g(struct msm_dsi_host *msm_host, bool is_bonded_dsi);
120 void msm_dsi_host_snapshot(struct msm_disp_state *disp_state, struct mipi_dsi_host *host);
121 void msm_dsi_host_test_pattern_en(struct mipi_dsi_host *host);
122 struct drm_dsc_config *msm_dsi_host_get_dsc_config(struct mipi_dsi_host *host);
123 bool msm_dsi_host_is_wide_bus_enabled(struct mipi_dsi_host *host);
124 
125 /* dsi phy */
126 struct msm_dsi_phy;
127 struct msm_dsi_phy_shared_timings {
128 	u32 clk_post;
129 	u32 clk_pre;
130 	bool clk_pre_inc_by_2;
131 	bool byte_intf_clk_div_2;
132 };
133 
134 struct msm_dsi_phy_clk_request {
135 	unsigned long bitclk_rate;
136 	unsigned long escclk_rate;
137 };
138 
139 void msm_dsi_phy_driver_register(void);
140 void msm_dsi_phy_driver_unregister(void);
141 int msm_dsi_phy_enable(struct msm_dsi_phy *phy,
142 			struct msm_dsi_phy_clk_request *clk_req,
143 			struct msm_dsi_phy_shared_timings *shared_timings);
144 void msm_dsi_phy_disable(struct msm_dsi_phy *phy);
145 void msm_dsi_phy_set_usecase(struct msm_dsi_phy *phy,
146 			     enum msm_dsi_phy_usecase uc);
147 void msm_dsi_phy_pll_save_state(struct msm_dsi_phy *phy);
148 int msm_dsi_phy_pll_restore_state(struct msm_dsi_phy *phy);
149 void msm_dsi_phy_snapshot(struct msm_disp_state *disp_state, struct msm_dsi_phy *phy);
150 bool msm_dsi_phy_set_continuous_clock(struct msm_dsi_phy *phy, bool enable);
151 
152 #endif /* __DSI_CONNECTOR_H__ */
153 
154