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 #include <drm/drm_panel.h> 16 17 #include "msm_drv.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_type { 27 MSM_DSI_PHY_28NM_HPM, 28 MSM_DSI_PHY_28NM_LP, 29 MSM_DSI_PHY_20NM, 30 MSM_DSI_PHY_28NM_8960, 31 MSM_DSI_PHY_14NM, 32 MSM_DSI_PHY_10NM, 33 MSM_DSI_PHY_MAX 34 }; 35 36 enum msm_dsi_phy_usecase { 37 MSM_DSI_PHY_STANDALONE, 38 MSM_DSI_PHY_MASTER, 39 MSM_DSI_PHY_SLAVE, 40 }; 41 42 #define DSI_DEV_REGULATOR_MAX 8 43 #define DSI_BUS_CLK_MAX 4 44 45 /* Regulators for DSI devices */ 46 struct dsi_reg_entry { 47 char name[32]; 48 int enable_load; 49 int disable_load; 50 }; 51 52 struct dsi_reg_config { 53 int num; 54 struct dsi_reg_entry regs[DSI_DEV_REGULATOR_MAX]; 55 }; 56 57 struct msm_dsi { 58 struct drm_device *dev; 59 struct platform_device *pdev; 60 61 /* connector managed by us when we're connected to a drm_panel */ 62 struct drm_connector *connector; 63 /* internal dsi bridge attached to MDP interface */ 64 struct drm_bridge *bridge; 65 66 struct mipi_dsi_host *host; 67 struct msm_dsi_phy *phy; 68 69 /* 70 * panel/external_bridge connected to dsi bridge output, only one of the 71 * two can be valid at a time 72 */ 73 struct drm_panel *panel; 74 struct drm_bridge *external_bridge; 75 76 struct device *phy_dev; 77 bool phy_enabled; 78 79 /* the encoder we are hooked to (outside of dsi block) */ 80 struct drm_encoder *encoder; 81 82 int id; 83 }; 84 85 /* dsi manager */ 86 struct drm_bridge *msm_dsi_manager_bridge_init(u8 id); 87 void msm_dsi_manager_bridge_destroy(struct drm_bridge *bridge); 88 struct drm_connector *msm_dsi_manager_connector_init(u8 id); 89 struct drm_connector *msm_dsi_manager_ext_bridge_init(u8 id); 90 int msm_dsi_manager_cmd_xfer(int id, const struct mipi_dsi_msg *msg); 91 bool msm_dsi_manager_cmd_xfer_trigger(int id, u32 dma_base, u32 len); 92 void msm_dsi_manager_setup_encoder(int id); 93 int msm_dsi_manager_register(struct msm_dsi *msm_dsi); 94 void msm_dsi_manager_unregister(struct msm_dsi *msm_dsi); 95 bool msm_dsi_manager_validate_current_config(u8 id); 96 97 /* msm dsi */ 98 static inline bool msm_dsi_device_connected(struct msm_dsi *msm_dsi) 99 { 100 return msm_dsi->panel || msm_dsi->external_bridge; 101 } 102 103 struct drm_encoder *msm_dsi_get_encoder(struct msm_dsi *msm_dsi); 104 105 /* dsi pll */ 106 struct msm_dsi_pll; 107 #ifdef CONFIG_DRM_MSM_DSI_PLL 108 struct msm_dsi_pll *msm_dsi_pll_init(struct platform_device *pdev, 109 enum msm_dsi_phy_type type, int dsi_id); 110 void msm_dsi_pll_destroy(struct msm_dsi_pll *pll); 111 int msm_dsi_pll_get_clk_provider(struct msm_dsi_pll *pll, 112 struct clk **byte_clk_provider, struct clk **pixel_clk_provider); 113 void msm_dsi_pll_save_state(struct msm_dsi_pll *pll); 114 int msm_dsi_pll_restore_state(struct msm_dsi_pll *pll); 115 int msm_dsi_pll_set_usecase(struct msm_dsi_pll *pll, 116 enum msm_dsi_phy_usecase uc); 117 #else 118 static inline struct msm_dsi_pll *msm_dsi_pll_init(struct platform_device *pdev, 119 enum msm_dsi_phy_type type, int id) { 120 return ERR_PTR(-ENODEV); 121 } 122 static inline void msm_dsi_pll_destroy(struct msm_dsi_pll *pll) 123 { 124 } 125 static inline int msm_dsi_pll_get_clk_provider(struct msm_dsi_pll *pll, 126 struct clk **byte_clk_provider, struct clk **pixel_clk_provider) 127 { 128 return -ENODEV; 129 } 130 static inline void msm_dsi_pll_save_state(struct msm_dsi_pll *pll) 131 { 132 } 133 static inline int msm_dsi_pll_restore_state(struct msm_dsi_pll *pll) 134 { 135 return 0; 136 } 137 static inline int msm_dsi_pll_set_usecase(struct msm_dsi_pll *pll, 138 enum msm_dsi_phy_usecase uc) 139 { 140 return -ENODEV; 141 } 142 #endif 143 144 /* dsi host */ 145 struct msm_dsi_host; 146 int msm_dsi_host_xfer_prepare(struct mipi_dsi_host *host, 147 const struct mipi_dsi_msg *msg); 148 void msm_dsi_host_xfer_restore(struct mipi_dsi_host *host, 149 const struct mipi_dsi_msg *msg); 150 int msm_dsi_host_cmd_tx(struct mipi_dsi_host *host, 151 const struct mipi_dsi_msg *msg); 152 int msm_dsi_host_cmd_rx(struct mipi_dsi_host *host, 153 const struct mipi_dsi_msg *msg); 154 void msm_dsi_host_cmd_xfer_commit(struct mipi_dsi_host *host, 155 u32 dma_base, u32 len); 156 int msm_dsi_host_enable(struct mipi_dsi_host *host); 157 int msm_dsi_host_disable(struct mipi_dsi_host *host); 158 int msm_dsi_host_power_on(struct mipi_dsi_host *host, 159 struct msm_dsi_phy_shared_timings *phy_shared_timings, 160 bool is_dual_dsi); 161 int msm_dsi_host_power_off(struct mipi_dsi_host *host); 162 int msm_dsi_host_set_display_mode(struct mipi_dsi_host *host, 163 const struct drm_display_mode *mode); 164 struct drm_panel *msm_dsi_host_get_panel(struct mipi_dsi_host *host); 165 unsigned long msm_dsi_host_get_mode_flags(struct mipi_dsi_host *host); 166 struct drm_bridge *msm_dsi_host_get_bridge(struct mipi_dsi_host *host); 167 int msm_dsi_host_register(struct mipi_dsi_host *host, bool check_defer); 168 void msm_dsi_host_unregister(struct mipi_dsi_host *host); 169 int msm_dsi_host_set_src_pll(struct mipi_dsi_host *host, 170 struct msm_dsi_pll *src_pll); 171 void msm_dsi_host_reset_phy(struct mipi_dsi_host *host); 172 void msm_dsi_host_get_phy_clk_req(struct mipi_dsi_host *host, 173 struct msm_dsi_phy_clk_request *clk_req, 174 bool is_dual_dsi); 175 void msm_dsi_host_destroy(struct mipi_dsi_host *host); 176 int msm_dsi_host_modeset_init(struct mipi_dsi_host *host, 177 struct drm_device *dev); 178 int msm_dsi_host_init(struct msm_dsi *msm_dsi); 179 int msm_dsi_runtime_suspend(struct device *dev); 180 int msm_dsi_runtime_resume(struct device *dev); 181 int dsi_link_clk_set_rate_6g(struct msm_dsi_host *msm_host); 182 int dsi_link_clk_set_rate_v2(struct msm_dsi_host *msm_host); 183 int dsi_link_clk_enable_6g(struct msm_dsi_host *msm_host); 184 int dsi_link_clk_enable_v2(struct msm_dsi_host *msm_host); 185 void dsi_link_clk_disable_6g(struct msm_dsi_host *msm_host); 186 void dsi_link_clk_disable_v2(struct msm_dsi_host *msm_host); 187 int dsi_tx_buf_alloc_6g(struct msm_dsi_host *msm_host, int size); 188 int dsi_tx_buf_alloc_v2(struct msm_dsi_host *msm_host, int size); 189 void *dsi_tx_buf_get_6g(struct msm_dsi_host *msm_host); 190 void *dsi_tx_buf_get_v2(struct msm_dsi_host *msm_host); 191 void dsi_tx_buf_put_6g(struct msm_dsi_host *msm_host); 192 int dsi_dma_base_get_6g(struct msm_dsi_host *msm_host, uint64_t *iova); 193 int dsi_dma_base_get_v2(struct msm_dsi_host *msm_host, uint64_t *iova); 194 int dsi_clk_init_v2(struct msm_dsi_host *msm_host); 195 int dsi_clk_init_6g_v2(struct msm_dsi_host *msm_host); 196 int dsi_calc_clk_rate_v2(struct msm_dsi_host *msm_host, bool is_dual_dsi); 197 int dsi_calc_clk_rate_6g(struct msm_dsi_host *msm_host, bool is_dual_dsi); 198 199 /* dsi phy */ 200 struct msm_dsi_phy; 201 struct msm_dsi_phy_shared_timings { 202 u32 clk_post; 203 u32 clk_pre; 204 bool clk_pre_inc_by_2; 205 }; 206 207 struct msm_dsi_phy_clk_request { 208 unsigned long bitclk_rate; 209 unsigned long escclk_rate; 210 }; 211 212 void msm_dsi_phy_driver_register(void); 213 void msm_dsi_phy_driver_unregister(void); 214 int msm_dsi_phy_enable(struct msm_dsi_phy *phy, int src_pll_id, 215 struct msm_dsi_phy_clk_request *clk_req); 216 void msm_dsi_phy_disable(struct msm_dsi_phy *phy); 217 void msm_dsi_phy_get_shared_timings(struct msm_dsi_phy *phy, 218 struct msm_dsi_phy_shared_timings *shared_timing); 219 struct msm_dsi_pll *msm_dsi_phy_get_pll(struct msm_dsi_phy *phy); 220 void msm_dsi_phy_set_usecase(struct msm_dsi_phy *phy, 221 enum msm_dsi_phy_usecase uc); 222 223 #endif /* __DSI_CONNECTOR_H__ */ 224 225