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_crtc.h" 21 #include "drm_mipi_dsi.h" 22 #include "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 #define DSI_CLOCK_MASTER DSI_0 31 #define DSI_CLOCK_SLAVE DSI_1 32 33 #define DSI_LEFT DSI_0 34 #define DSI_RIGHT DSI_1 35 36 /* According to the current drm framework sequence, take the encoder of 37 * DSI_1 as master encoder 38 */ 39 #define DSI_ENCODER_MASTER DSI_1 40 #define DSI_ENCODER_SLAVE DSI_0 41 42 enum msm_dsi_phy_type { 43 MSM_DSI_PHY_28NM_HPM, 44 MSM_DSI_PHY_28NM_LP, 45 MSM_DSI_PHY_MAX 46 }; 47 48 #define DSI_DEV_REGULATOR_MAX 8 49 50 /* Regulators for DSI devices */ 51 struct dsi_reg_entry { 52 char name[32]; 53 int min_voltage; 54 int max_voltage; 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 struct drm_connector *connector; 69 struct drm_bridge *bridge; 70 71 struct mipi_dsi_host *host; 72 struct msm_dsi_phy *phy; 73 struct drm_panel *panel; 74 unsigned long panel_flags; 75 76 struct device *phy_dev; 77 bool phy_enabled; 78 79 /* the encoders we are hooked to (outside of dsi block) */ 80 struct drm_encoder *encoders[MSM_DSI_ENCODER_NUM]; 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 int msm_dsi_manager_phy_enable(int id, 90 const unsigned long bit_rate, const unsigned long esc_rate, 91 u32 *clk_pre, u32 *clk_post); 92 void msm_dsi_manager_phy_disable(int id); 93 int msm_dsi_manager_cmd_xfer(int id, const struct mipi_dsi_msg *msg); 94 bool msm_dsi_manager_cmd_xfer_trigger(int id, u32 iova, u32 len); 95 int msm_dsi_manager_register(struct msm_dsi *msm_dsi); 96 void msm_dsi_manager_unregister(struct msm_dsi *msm_dsi); 97 98 /* msm dsi */ 99 struct drm_encoder *msm_dsi_get_encoder(struct msm_dsi *msm_dsi); 100 101 /* dsi pll */ 102 struct msm_dsi_pll; 103 #ifdef CONFIG_DRM_MSM_DSI_PLL 104 struct msm_dsi_pll *msm_dsi_pll_init(struct platform_device *pdev, 105 enum msm_dsi_phy_type type, int dsi_id); 106 void msm_dsi_pll_destroy(struct msm_dsi_pll *pll); 107 int msm_dsi_pll_get_clk_provider(struct msm_dsi_pll *pll, 108 struct clk **byte_clk_provider, struct clk **pixel_clk_provider); 109 #else 110 static inline struct msm_dsi_pll *msm_dsi_pll_init(struct platform_device *pdev, 111 enum msm_dsi_phy_type type, int id) { 112 return ERR_PTR(-ENODEV); 113 } 114 static inline void msm_dsi_pll_destroy(struct msm_dsi_pll *pll) 115 { 116 } 117 static inline int msm_dsi_pll_get_clk_provider(struct msm_dsi_pll *pll, 118 struct clk **byte_clk_provider, struct clk **pixel_clk_provider) 119 { 120 return -ENODEV; 121 } 122 #endif 123 124 /* dsi host */ 125 int msm_dsi_host_xfer_prepare(struct mipi_dsi_host *host, 126 const struct mipi_dsi_msg *msg); 127 void msm_dsi_host_xfer_restore(struct mipi_dsi_host *host, 128 const struct mipi_dsi_msg *msg); 129 int msm_dsi_host_cmd_tx(struct mipi_dsi_host *host, 130 const struct mipi_dsi_msg *msg); 131 int msm_dsi_host_cmd_rx(struct mipi_dsi_host *host, 132 const struct mipi_dsi_msg *msg); 133 void msm_dsi_host_cmd_xfer_commit(struct mipi_dsi_host *host, 134 u32 iova, u32 len); 135 int msm_dsi_host_enable(struct mipi_dsi_host *host); 136 int msm_dsi_host_disable(struct mipi_dsi_host *host); 137 int msm_dsi_host_power_on(struct mipi_dsi_host *host); 138 int msm_dsi_host_power_off(struct mipi_dsi_host *host); 139 int msm_dsi_host_set_display_mode(struct mipi_dsi_host *host, 140 struct drm_display_mode *mode); 141 struct drm_panel *msm_dsi_host_get_panel(struct mipi_dsi_host *host, 142 unsigned long *panel_flags); 143 int msm_dsi_host_register(struct mipi_dsi_host *host, bool check_defer); 144 void msm_dsi_host_unregister(struct mipi_dsi_host *host); 145 int msm_dsi_host_set_src_pll(struct mipi_dsi_host *host, 146 struct msm_dsi_pll *src_pll); 147 void msm_dsi_host_destroy(struct mipi_dsi_host *host); 148 int msm_dsi_host_modeset_init(struct mipi_dsi_host *host, 149 struct drm_device *dev); 150 int msm_dsi_host_init(struct msm_dsi *msm_dsi); 151 152 /* dsi phy */ 153 struct msm_dsi_phy; 154 void msm_dsi_phy_driver_register(void); 155 void msm_dsi_phy_driver_unregister(void); 156 int msm_dsi_phy_enable(struct msm_dsi_phy *phy, bool is_dual_panel, 157 const unsigned long bit_rate, const unsigned long esc_rate); 158 int msm_dsi_phy_disable(struct msm_dsi_phy *phy); 159 void msm_dsi_phy_get_clk_pre_post(struct msm_dsi_phy *phy, 160 u32 *clk_pre, u32 *clk_post); 161 struct msm_dsi_pll *msm_dsi_phy_get_pll(struct msm_dsi_phy *phy); 162 163 #endif /* __DSI_CONNECTOR_H__ */ 164 165