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_usecase { 27 MSM_DSI_PHY_STANDALONE, 28 MSM_DSI_PHY_MASTER, 29 MSM_DSI_PHY_SLAVE, 30 }; 31 32 #define DSI_DEV_REGULATOR_MAX 8 33 #define DSI_BUS_CLK_MAX 4 34 35 /* Regulators for DSI devices */ 36 struct dsi_reg_entry { 37 char name[32]; 38 int enable_load; 39 int disable_load; 40 }; 41 42 struct dsi_reg_config { 43 int num; 44 struct dsi_reg_entry regs[DSI_DEV_REGULATOR_MAX]; 45 }; 46 47 struct msm_dsi { 48 struct drm_device *dev; 49 struct platform_device *pdev; 50 51 /* connector managed by us when we're connected to a drm_panel */ 52 struct drm_connector *connector; 53 /* internal dsi bridge attached to MDP interface */ 54 struct drm_bridge *bridge; 55 56 struct mipi_dsi_host *host; 57 struct msm_dsi_phy *phy; 58 59 /* 60 * panel/external_bridge connected to dsi bridge output, only one of the 61 * two can be valid at a time 62 */ 63 struct drm_panel *panel; 64 struct drm_bridge *external_bridge; 65 66 struct device *phy_dev; 67 bool phy_enabled; 68 69 /* the encoder we are hooked to (outside of dsi block) */ 70 struct drm_encoder *encoder; 71 72 int id; 73 }; 74 75 /* dsi manager */ 76 struct drm_bridge *msm_dsi_manager_bridge_init(u8 id); 77 void msm_dsi_manager_bridge_destroy(struct drm_bridge *bridge); 78 struct drm_connector *msm_dsi_manager_connector_init(u8 id); 79 struct drm_connector *msm_dsi_manager_ext_bridge_init(u8 id); 80 int msm_dsi_manager_cmd_xfer(int id, const struct mipi_dsi_msg *msg); 81 bool msm_dsi_manager_cmd_xfer_trigger(int id, u32 dma_base, u32 len); 82 void msm_dsi_manager_setup_encoder(int id); 83 int msm_dsi_manager_register(struct msm_dsi *msm_dsi); 84 void msm_dsi_manager_unregister(struct msm_dsi *msm_dsi); 85 bool msm_dsi_manager_validate_current_config(u8 id); 86 87 /* msm dsi */ 88 static inline bool msm_dsi_device_connected(struct msm_dsi *msm_dsi) 89 { 90 return msm_dsi->panel || msm_dsi->external_bridge; 91 } 92 93 struct drm_encoder *msm_dsi_get_encoder(struct msm_dsi *msm_dsi); 94 95 /* dsi host */ 96 struct msm_dsi_host; 97 int msm_dsi_host_xfer_prepare(struct mipi_dsi_host *host, 98 const struct mipi_dsi_msg *msg); 99 void msm_dsi_host_xfer_restore(struct mipi_dsi_host *host, 100 const struct mipi_dsi_msg *msg); 101 int msm_dsi_host_cmd_tx(struct mipi_dsi_host *host, 102 const struct mipi_dsi_msg *msg); 103 int msm_dsi_host_cmd_rx(struct mipi_dsi_host *host, 104 const struct mipi_dsi_msg *msg); 105 void msm_dsi_host_cmd_xfer_commit(struct mipi_dsi_host *host, 106 u32 dma_base, u32 len); 107 int msm_dsi_host_enable(struct mipi_dsi_host *host); 108 int msm_dsi_host_disable(struct mipi_dsi_host *host); 109 int msm_dsi_host_power_on(struct mipi_dsi_host *host, 110 struct msm_dsi_phy_shared_timings *phy_shared_timings, 111 bool is_dual_dsi); 112 int msm_dsi_host_power_off(struct mipi_dsi_host *host); 113 int msm_dsi_host_set_display_mode(struct mipi_dsi_host *host, 114 const struct drm_display_mode *mode); 115 struct drm_panel *msm_dsi_host_get_panel(struct mipi_dsi_host *host); 116 unsigned long msm_dsi_host_get_mode_flags(struct mipi_dsi_host *host); 117 struct drm_bridge *msm_dsi_host_get_bridge(struct mipi_dsi_host *host); 118 int msm_dsi_host_register(struct mipi_dsi_host *host, bool check_defer); 119 void msm_dsi_host_unregister(struct mipi_dsi_host *host); 120 int msm_dsi_host_set_src_pll(struct mipi_dsi_host *host, 121 struct msm_dsi_phy *src_phy); 122 void msm_dsi_host_reset_phy(struct mipi_dsi_host *host); 123 void msm_dsi_host_get_phy_clk_req(struct mipi_dsi_host *host, 124 struct msm_dsi_phy_clk_request *clk_req, 125 bool is_dual_dsi); 126 void msm_dsi_host_destroy(struct mipi_dsi_host *host); 127 int msm_dsi_host_modeset_init(struct mipi_dsi_host *host, 128 struct drm_device *dev); 129 int msm_dsi_host_init(struct msm_dsi *msm_dsi); 130 int msm_dsi_runtime_suspend(struct device *dev); 131 int msm_dsi_runtime_resume(struct device *dev); 132 int dsi_link_clk_set_rate_6g(struct msm_dsi_host *msm_host); 133 int dsi_link_clk_set_rate_v2(struct msm_dsi_host *msm_host); 134 int dsi_link_clk_enable_6g(struct msm_dsi_host *msm_host); 135 int dsi_link_clk_enable_v2(struct msm_dsi_host *msm_host); 136 void dsi_link_clk_disable_6g(struct msm_dsi_host *msm_host); 137 void dsi_link_clk_disable_v2(struct msm_dsi_host *msm_host); 138 int dsi_tx_buf_alloc_6g(struct msm_dsi_host *msm_host, int size); 139 int dsi_tx_buf_alloc_v2(struct msm_dsi_host *msm_host, int size); 140 void *dsi_tx_buf_get_6g(struct msm_dsi_host *msm_host); 141 void *dsi_tx_buf_get_v2(struct msm_dsi_host *msm_host); 142 void dsi_tx_buf_put_6g(struct msm_dsi_host *msm_host); 143 int dsi_dma_base_get_6g(struct msm_dsi_host *msm_host, uint64_t *iova); 144 int dsi_dma_base_get_v2(struct msm_dsi_host *msm_host, uint64_t *iova); 145 int dsi_clk_init_v2(struct msm_dsi_host *msm_host); 146 int dsi_clk_init_6g_v2(struct msm_dsi_host *msm_host); 147 int dsi_calc_clk_rate_v2(struct msm_dsi_host *msm_host, bool is_dual_dsi); 148 int dsi_calc_clk_rate_6g(struct msm_dsi_host *msm_host, bool is_dual_dsi); 149 150 /* dsi phy */ 151 struct msm_dsi_phy; 152 struct msm_dsi_phy_shared_timings { 153 u32 clk_post; 154 u32 clk_pre; 155 bool clk_pre_inc_by_2; 156 }; 157 158 struct msm_dsi_phy_clk_request { 159 unsigned long bitclk_rate; 160 unsigned long escclk_rate; 161 }; 162 163 void msm_dsi_phy_driver_register(void); 164 void msm_dsi_phy_driver_unregister(void); 165 int msm_dsi_phy_enable(struct msm_dsi_phy *phy, 166 struct msm_dsi_phy_clk_request *clk_req); 167 void msm_dsi_phy_disable(struct msm_dsi_phy *phy); 168 void msm_dsi_phy_get_shared_timings(struct msm_dsi_phy *phy, 169 struct msm_dsi_phy_shared_timings *shared_timing); 170 void msm_dsi_phy_set_usecase(struct msm_dsi_phy *phy, 171 enum msm_dsi_phy_usecase uc); 172 int msm_dsi_phy_get_clk_provider(struct msm_dsi_phy *phy, 173 struct clk **byte_clk_provider, struct clk **pixel_clk_provider); 174 void msm_dsi_phy_pll_save_state(struct msm_dsi_phy *phy); 175 int msm_dsi_phy_pll_restore_state(struct msm_dsi_phy *phy); 176 177 #endif /* __DSI_CONNECTOR_H__ */ 178 179