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  	/* internal dsi bridge attached to MDP interface */
39  	struct drm_bridge *bridge;
40  
41  	struct mipi_dsi_host *host;
42  	struct msm_dsi_phy *phy;
43  
44  	/*
45  	 * external_bridge connected to dsi bridge output
46  	 */
47  	struct drm_bridge *external_bridge;
48  
49  	struct device *phy_dev;
50  	bool phy_enabled;
51  
52  	/* the encoder we are hooked to (outside of dsi block) */
53  	struct drm_encoder *encoder;
54  
55  	int id;
56  };
57  
58  /* dsi manager */
59  struct drm_bridge *msm_dsi_manager_bridge_init(u8 id);
60  void msm_dsi_manager_bridge_destroy(struct drm_bridge *bridge);
61  int msm_dsi_manager_ext_bridge_init(u8 id);
62  int msm_dsi_manager_cmd_xfer(int id, const struct mipi_dsi_msg *msg);
63  bool msm_dsi_manager_cmd_xfer_trigger(int id, u32 dma_base, u32 len);
64  int msm_dsi_manager_register(struct msm_dsi *msm_dsi);
65  void msm_dsi_manager_unregister(struct msm_dsi *msm_dsi);
66  void msm_dsi_manager_tpg_enable(void);
67  
68  /* msm dsi */
msm_dsi_device_connected(struct msm_dsi * msm_dsi)69  static inline bool msm_dsi_device_connected(struct msm_dsi *msm_dsi)
70  {
71  	return msm_dsi->external_bridge;
72  }
73  
74  /* dsi host */
75  struct msm_dsi_host;
76  int msm_dsi_host_xfer_prepare(struct mipi_dsi_host *host,
77  					const struct mipi_dsi_msg *msg);
78  void msm_dsi_host_xfer_restore(struct mipi_dsi_host *host,
79  					const struct mipi_dsi_msg *msg);
80  int msm_dsi_host_cmd_tx(struct mipi_dsi_host *host,
81  					const struct mipi_dsi_msg *msg);
82  int msm_dsi_host_cmd_rx(struct mipi_dsi_host *host,
83  					const struct mipi_dsi_msg *msg);
84  void msm_dsi_host_cmd_xfer_commit(struct mipi_dsi_host *host,
85  					u32 dma_base, u32 len);
86  int msm_dsi_host_enable(struct mipi_dsi_host *host);
87  int msm_dsi_host_disable(struct mipi_dsi_host *host);
88  void msm_dsi_host_enable_irq(struct mipi_dsi_host *host);
89  void msm_dsi_host_disable_irq(struct mipi_dsi_host *host);
90  int msm_dsi_host_power_on(struct mipi_dsi_host *host,
91  			struct msm_dsi_phy_shared_timings *phy_shared_timings,
92  			bool is_bonded_dsi, struct msm_dsi_phy *phy);
93  int msm_dsi_host_power_off(struct mipi_dsi_host *host);
94  int msm_dsi_host_set_display_mode(struct mipi_dsi_host *host,
95  				  const struct drm_display_mode *mode);
96  enum drm_mode_status msm_dsi_host_check_dsc(struct mipi_dsi_host *host,
97  					    const struct drm_display_mode *mode);
98  unsigned long msm_dsi_host_get_mode_flags(struct mipi_dsi_host *host);
99  int msm_dsi_host_register(struct mipi_dsi_host *host);
100  void msm_dsi_host_unregister(struct mipi_dsi_host *host);
101  void msm_dsi_host_set_phy_mode(struct mipi_dsi_host *host,
102  			struct msm_dsi_phy *src_phy);
103  int msm_dsi_host_set_src_pll(struct mipi_dsi_host *host,
104  			struct msm_dsi_phy *src_phy);
105  void msm_dsi_host_reset_phy(struct mipi_dsi_host *host);
106  void msm_dsi_host_get_phy_clk_req(struct mipi_dsi_host *host,
107  	struct msm_dsi_phy_clk_request *clk_req,
108  	bool is_bonded_dsi);
109  void msm_dsi_host_destroy(struct mipi_dsi_host *host);
110  int msm_dsi_host_modeset_init(struct mipi_dsi_host *host,
111  					struct drm_device *dev);
112  int msm_dsi_host_init(struct msm_dsi *msm_dsi);
113  int msm_dsi_runtime_suspend(struct device *dev);
114  int msm_dsi_runtime_resume(struct device *dev);
115  int dsi_link_clk_set_rate_6g(struct msm_dsi_host *msm_host);
116  int dsi_link_clk_set_rate_v2(struct msm_dsi_host *msm_host);
117  int dsi_link_clk_enable_6g(struct msm_dsi_host *msm_host);
118  int dsi_link_clk_enable_v2(struct msm_dsi_host *msm_host);
119  void dsi_link_clk_disable_6g(struct msm_dsi_host *msm_host);
120  void dsi_link_clk_disable_v2(struct msm_dsi_host *msm_host);
121  unsigned long dsi_byte_clk_get_rate(struct mipi_dsi_host *host, bool is_bonded_dsi,
122  				    const struct drm_display_mode *mode);
123  int dsi_tx_buf_alloc_6g(struct msm_dsi_host *msm_host, int size);
124  int dsi_tx_buf_alloc_v2(struct msm_dsi_host *msm_host, int size);
125  void *dsi_tx_buf_get_6g(struct msm_dsi_host *msm_host);
126  void *dsi_tx_buf_get_v2(struct msm_dsi_host *msm_host);
127  void dsi_tx_buf_put_6g(struct msm_dsi_host *msm_host);
128  int dsi_dma_base_get_6g(struct msm_dsi_host *msm_host, uint64_t *iova);
129  int dsi_dma_base_get_v2(struct msm_dsi_host *msm_host, uint64_t *iova);
130  int dsi_clk_init_v2(struct msm_dsi_host *msm_host);
131  int dsi_clk_init_6g_v2(struct msm_dsi_host *msm_host);
132  int dsi_calc_clk_rate_v2(struct msm_dsi_host *msm_host, bool is_bonded_dsi);
133  int dsi_calc_clk_rate_6g(struct msm_dsi_host *msm_host, bool is_bonded_dsi);
134  void msm_dsi_host_snapshot(struct msm_disp_state *disp_state, struct mipi_dsi_host *host);
135  void msm_dsi_host_test_pattern_en(struct mipi_dsi_host *host);
136  struct drm_dsc_config *msm_dsi_host_get_dsc_config(struct mipi_dsi_host *host);
137  
138  /* dsi phy */
139  struct msm_dsi_phy;
140  struct msm_dsi_phy_shared_timings {
141  	u32 clk_post;
142  	u32 clk_pre;
143  	bool clk_pre_inc_by_2;
144  	bool byte_intf_clk_div_2;
145  };
146  
147  struct msm_dsi_phy_clk_request {
148  	unsigned long bitclk_rate;
149  	unsigned long escclk_rate;
150  };
151  
152  void msm_dsi_phy_driver_register(void);
153  void msm_dsi_phy_driver_unregister(void);
154  int msm_dsi_phy_enable(struct msm_dsi_phy *phy,
155  			struct msm_dsi_phy_clk_request *clk_req,
156  			struct msm_dsi_phy_shared_timings *shared_timings);
157  void msm_dsi_phy_disable(struct msm_dsi_phy *phy);
158  void msm_dsi_phy_set_usecase(struct msm_dsi_phy *phy,
159  			     enum msm_dsi_phy_usecase uc);
160  void msm_dsi_phy_pll_save_state(struct msm_dsi_phy *phy);
161  int msm_dsi_phy_pll_restore_state(struct msm_dsi_phy *phy);
162  void msm_dsi_phy_snapshot(struct msm_disp_state *disp_state, struct msm_dsi_phy *phy);
163  bool msm_dsi_phy_set_continuous_clock(struct msm_dsi_phy *phy, bool enable);
164  
165  #endif /* __DSI_CONNECTOR_H__ */
166  
167