1 /* 2 * Copyright (c) 2015, The Linux Foundation. All rights reserved. 3 * 4 * This program is free software; you can redistribute it and/or modify 5 * it under the terms of the GNU General Public License version 2 and 6 * only version 2 as published by the Free Software Foundation. 7 * 8 * This program is distributed in the hope that it will be useful, 9 * but WITHOUT ANY WARRANTY; without even the implied warranty of 10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11 * GNU General Public License for more details. 12 */ 13 14 #ifndef __DSI_CONNECTOR_H__ 15 #define __DSI_CONNECTOR_H__ 16 17 #include <linux/of_platform.h> 18 #include <linux/platform_device.h> 19 20 #include <drm/drm_crtc.h> 21 #include <drm/drm_mipi_dsi.h> 22 #include <drm/drm_panel.h> 23 24 #include "msm_drv.h" 25 26 #define DSI_0 0 27 #define DSI_1 1 28 #define DSI_MAX 2 29 30 struct msm_dsi_phy_shared_timings; 31 struct msm_dsi_phy_clk_request; 32 33 enum msm_dsi_phy_type { 34 MSM_DSI_PHY_28NM_HPM, 35 MSM_DSI_PHY_28NM_LP, 36 MSM_DSI_PHY_20NM, 37 MSM_DSI_PHY_28NM_8960, 38 MSM_DSI_PHY_14NM, 39 MSM_DSI_PHY_10NM, 40 MSM_DSI_PHY_MAX 41 }; 42 43 enum msm_dsi_phy_usecase { 44 MSM_DSI_PHY_STANDALONE, 45 MSM_DSI_PHY_MASTER, 46 MSM_DSI_PHY_SLAVE, 47 }; 48 49 #define DSI_DEV_REGULATOR_MAX 8 50 #define DSI_BUS_CLK_MAX 4 51 52 /* Regulators for DSI devices */ 53 struct dsi_reg_entry { 54 char name[32]; 55 int enable_load; 56 int disable_load; 57 }; 58 59 struct dsi_reg_config { 60 int num; 61 struct dsi_reg_entry regs[DSI_DEV_REGULATOR_MAX]; 62 }; 63 64 struct msm_dsi { 65 struct drm_device *dev; 66 struct platform_device *pdev; 67 68 /* connector managed by us when we're connected to a drm_panel */ 69 struct drm_connector *connector; 70 /* internal dsi bridge attached to MDP interface */ 71 struct drm_bridge *bridge; 72 73 struct mipi_dsi_host *host; 74 struct msm_dsi_phy *phy; 75 76 /* 77 * panel/external_bridge connected to dsi bridge output, only one of the 78 * two can be valid at a time 79 */ 80 struct drm_panel *panel; 81 struct drm_bridge *external_bridge; 82 unsigned long device_flags; 83 84 struct device *phy_dev; 85 bool phy_enabled; 86 87 /* the encoder we are hooked to (outside of dsi block) */ 88 struct drm_encoder *encoder; 89 90 int id; 91 }; 92 93 /* dsi manager */ 94 struct drm_bridge *msm_dsi_manager_bridge_init(u8 id); 95 void msm_dsi_manager_bridge_destroy(struct drm_bridge *bridge); 96 struct drm_connector *msm_dsi_manager_connector_init(u8 id); 97 struct drm_connector *msm_dsi_manager_ext_bridge_init(u8 id); 98 int msm_dsi_manager_cmd_xfer(int id, const struct mipi_dsi_msg *msg); 99 bool msm_dsi_manager_cmd_xfer_trigger(int id, u32 dma_base, u32 len); 100 void msm_dsi_manager_attach_dsi_device(int id, u32 device_flags); 101 int msm_dsi_manager_register(struct msm_dsi *msm_dsi); 102 void msm_dsi_manager_unregister(struct msm_dsi *msm_dsi); 103 104 /* msm dsi */ 105 static inline bool msm_dsi_device_connected(struct msm_dsi *msm_dsi) 106 { 107 return msm_dsi->panel || msm_dsi->external_bridge; 108 } 109 110 struct drm_encoder *msm_dsi_get_encoder(struct msm_dsi *msm_dsi); 111 112 /* dsi pll */ 113 struct msm_dsi_pll; 114 #ifdef CONFIG_DRM_MSM_DSI_PLL 115 struct msm_dsi_pll *msm_dsi_pll_init(struct platform_device *pdev, 116 enum msm_dsi_phy_type type, int dsi_id); 117 void msm_dsi_pll_destroy(struct msm_dsi_pll *pll); 118 int msm_dsi_pll_get_clk_provider(struct msm_dsi_pll *pll, 119 struct clk **byte_clk_provider, struct clk **pixel_clk_provider); 120 void msm_dsi_pll_save_state(struct msm_dsi_pll *pll); 121 int msm_dsi_pll_restore_state(struct msm_dsi_pll *pll); 122 int msm_dsi_pll_set_usecase(struct msm_dsi_pll *pll, 123 enum msm_dsi_phy_usecase uc); 124 #else 125 static inline struct msm_dsi_pll *msm_dsi_pll_init(struct platform_device *pdev, 126 enum msm_dsi_phy_type type, int id) { 127 return ERR_PTR(-ENODEV); 128 } 129 static inline void msm_dsi_pll_destroy(struct msm_dsi_pll *pll) 130 { 131 } 132 static inline int msm_dsi_pll_get_clk_provider(struct msm_dsi_pll *pll, 133 struct clk **byte_clk_provider, struct clk **pixel_clk_provider) 134 { 135 return -ENODEV; 136 } 137 static inline void msm_dsi_pll_save_state(struct msm_dsi_pll *pll) 138 { 139 } 140 static inline int msm_dsi_pll_restore_state(struct msm_dsi_pll *pll) 141 { 142 return 0; 143 } 144 static inline int msm_dsi_pll_set_usecase(struct msm_dsi_pll *pll, 145 enum msm_dsi_phy_usecase uc) 146 { 147 return -ENODEV; 148 } 149 #endif 150 151 /* dsi host */ 152 int msm_dsi_host_xfer_prepare(struct mipi_dsi_host *host, 153 const struct mipi_dsi_msg *msg); 154 void msm_dsi_host_xfer_restore(struct mipi_dsi_host *host, 155 const struct mipi_dsi_msg *msg); 156 int msm_dsi_host_cmd_tx(struct mipi_dsi_host *host, 157 const struct mipi_dsi_msg *msg); 158 int msm_dsi_host_cmd_rx(struct mipi_dsi_host *host, 159 const struct mipi_dsi_msg *msg); 160 void msm_dsi_host_cmd_xfer_commit(struct mipi_dsi_host *host, 161 u32 dma_base, u32 len); 162 int msm_dsi_host_enable(struct mipi_dsi_host *host); 163 int msm_dsi_host_disable(struct mipi_dsi_host *host); 164 int msm_dsi_host_power_on(struct mipi_dsi_host *host, 165 struct msm_dsi_phy_shared_timings *phy_shared_timings); 166 int msm_dsi_host_power_off(struct mipi_dsi_host *host); 167 int msm_dsi_host_set_display_mode(struct mipi_dsi_host *host, 168 struct drm_display_mode *mode); 169 struct drm_panel *msm_dsi_host_get_panel(struct mipi_dsi_host *host, 170 unsigned long *panel_flags); 171 struct drm_bridge *msm_dsi_host_get_bridge(struct mipi_dsi_host *host); 172 int msm_dsi_host_register(struct mipi_dsi_host *host, bool check_defer); 173 void msm_dsi_host_unregister(struct mipi_dsi_host *host); 174 int msm_dsi_host_set_src_pll(struct mipi_dsi_host *host, 175 struct msm_dsi_pll *src_pll); 176 void msm_dsi_host_reset_phy(struct mipi_dsi_host *host); 177 void msm_dsi_host_get_phy_clk_req(struct mipi_dsi_host *host, 178 struct msm_dsi_phy_clk_request *clk_req); 179 void msm_dsi_host_destroy(struct mipi_dsi_host *host); 180 int msm_dsi_host_modeset_init(struct mipi_dsi_host *host, 181 struct drm_device *dev); 182 int msm_dsi_host_init(struct msm_dsi *msm_dsi); 183 int msm_dsi_runtime_suspend(struct device *dev); 184 int msm_dsi_runtime_resume(struct device *dev); 185 186 /* dsi phy */ 187 struct msm_dsi_phy; 188 struct msm_dsi_phy_shared_timings { 189 u32 clk_post; 190 u32 clk_pre; 191 bool clk_pre_inc_by_2; 192 }; 193 194 struct msm_dsi_phy_clk_request { 195 unsigned long bitclk_rate; 196 unsigned long escclk_rate; 197 }; 198 199 void msm_dsi_phy_driver_register(void); 200 void msm_dsi_phy_driver_unregister(void); 201 int msm_dsi_phy_enable(struct msm_dsi_phy *phy, int src_pll_id, 202 struct msm_dsi_phy_clk_request *clk_req); 203 void msm_dsi_phy_disable(struct msm_dsi_phy *phy); 204 void msm_dsi_phy_get_shared_timings(struct msm_dsi_phy *phy, 205 struct msm_dsi_phy_shared_timings *shared_timing); 206 struct msm_dsi_pll *msm_dsi_phy_get_pll(struct msm_dsi_phy *phy); 207 void msm_dsi_phy_set_usecase(struct msm_dsi_phy *phy, 208 enum msm_dsi_phy_usecase uc); 209 210 #endif /* __DSI_CONNECTOR_H__ */ 211 212