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 enum msm_dsi_phy_type { 31 MSM_DSI_PHY_28NM_HPM, 32 MSM_DSI_PHY_28NM_LP, 33 MSM_DSI_PHY_20NM, 34 MSM_DSI_PHY_MAX 35 }; 36 37 #define DSI_DEV_REGULATOR_MAX 8 38 39 /* Regulators for DSI devices */ 40 struct dsi_reg_entry { 41 char name[32]; 42 int min_voltage; 43 int max_voltage; 44 int enable_load; 45 int disable_load; 46 }; 47 48 struct dsi_reg_config { 49 int num; 50 struct dsi_reg_entry regs[DSI_DEV_REGULATOR_MAX]; 51 }; 52 53 struct msm_dsi { 54 struct drm_device *dev; 55 struct platform_device *pdev; 56 57 struct drm_connector *connector; 58 struct drm_bridge *bridge; 59 60 struct mipi_dsi_host *host; 61 struct msm_dsi_phy *phy; 62 struct drm_panel *panel; 63 unsigned long panel_flags; 64 65 struct device *phy_dev; 66 bool phy_enabled; 67 68 /* the encoders we are hooked to (outside of dsi block) */ 69 struct drm_encoder *encoders[MSM_DSI_ENCODER_NUM]; 70 71 int id; 72 }; 73 74 /* dsi manager */ 75 struct drm_bridge *msm_dsi_manager_bridge_init(u8 id); 76 void msm_dsi_manager_bridge_destroy(struct drm_bridge *bridge); 77 struct drm_connector *msm_dsi_manager_connector_init(u8 id); 78 int msm_dsi_manager_phy_enable(int id, 79 const unsigned long bit_rate, const unsigned long esc_rate, 80 u32 *clk_pre, u32 *clk_post); 81 void msm_dsi_manager_phy_disable(int id); 82 int msm_dsi_manager_cmd_xfer(int id, const struct mipi_dsi_msg *msg); 83 bool msm_dsi_manager_cmd_xfer_trigger(int id, u32 iova, u32 len); 84 int msm_dsi_manager_register(struct msm_dsi *msm_dsi); 85 void msm_dsi_manager_unregister(struct msm_dsi *msm_dsi); 86 87 /* msm dsi */ 88 struct drm_encoder *msm_dsi_get_encoder(struct msm_dsi *msm_dsi); 89 90 /* dsi pll */ 91 struct msm_dsi_pll; 92 #ifdef CONFIG_DRM_MSM_DSI_PLL 93 struct msm_dsi_pll *msm_dsi_pll_init(struct platform_device *pdev, 94 enum msm_dsi_phy_type type, int dsi_id); 95 void msm_dsi_pll_destroy(struct msm_dsi_pll *pll); 96 int msm_dsi_pll_get_clk_provider(struct msm_dsi_pll *pll, 97 struct clk **byte_clk_provider, struct clk **pixel_clk_provider); 98 void msm_dsi_pll_save_state(struct msm_dsi_pll *pll); 99 int msm_dsi_pll_restore_state(struct msm_dsi_pll *pll); 100 #else 101 static inline struct msm_dsi_pll *msm_dsi_pll_init(struct platform_device *pdev, 102 enum msm_dsi_phy_type type, int id) { 103 return ERR_PTR(-ENODEV); 104 } 105 static inline void msm_dsi_pll_destroy(struct msm_dsi_pll *pll) 106 { 107 } 108 static inline int msm_dsi_pll_get_clk_provider(struct msm_dsi_pll *pll, 109 struct clk **byte_clk_provider, struct clk **pixel_clk_provider) 110 { 111 return -ENODEV; 112 } 113 static inline void msm_dsi_pll_save_state(struct msm_dsi_pll *pll) 114 { 115 } 116 static inline int msm_dsi_pll_restore_state(struct msm_dsi_pll *pll) 117 { 118 return 0; 119 } 120 #endif 121 122 /* dsi host */ 123 int msm_dsi_host_xfer_prepare(struct mipi_dsi_host *host, 124 const struct mipi_dsi_msg *msg); 125 void msm_dsi_host_xfer_restore(struct mipi_dsi_host *host, 126 const struct mipi_dsi_msg *msg); 127 int msm_dsi_host_cmd_tx(struct mipi_dsi_host *host, 128 const struct mipi_dsi_msg *msg); 129 int msm_dsi_host_cmd_rx(struct mipi_dsi_host *host, 130 const struct mipi_dsi_msg *msg); 131 void msm_dsi_host_cmd_xfer_commit(struct mipi_dsi_host *host, 132 u32 iova, u32 len); 133 int msm_dsi_host_enable(struct mipi_dsi_host *host); 134 int msm_dsi_host_disable(struct mipi_dsi_host *host); 135 int msm_dsi_host_power_on(struct mipi_dsi_host *host); 136 int msm_dsi_host_power_off(struct mipi_dsi_host *host); 137 int msm_dsi_host_set_display_mode(struct mipi_dsi_host *host, 138 struct drm_display_mode *mode); 139 struct drm_panel *msm_dsi_host_get_panel(struct mipi_dsi_host *host, 140 unsigned long *panel_flags); 141 int msm_dsi_host_register(struct mipi_dsi_host *host, bool check_defer); 142 void msm_dsi_host_unregister(struct mipi_dsi_host *host); 143 int msm_dsi_host_set_src_pll(struct mipi_dsi_host *host, 144 struct msm_dsi_pll *src_pll); 145 void msm_dsi_host_destroy(struct mipi_dsi_host *host); 146 int msm_dsi_host_modeset_init(struct mipi_dsi_host *host, 147 struct drm_device *dev); 148 int msm_dsi_host_init(struct msm_dsi *msm_dsi); 149 150 /* dsi phy */ 151 struct msm_dsi_phy; 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, int src_pll_id, 155 const unsigned long bit_rate, const unsigned long esc_rate); 156 int msm_dsi_phy_disable(struct msm_dsi_phy *phy); 157 void msm_dsi_phy_get_clk_pre_post(struct msm_dsi_phy *phy, 158 u32 *clk_pre, u32 *clk_post); 159 struct msm_dsi_pll *msm_dsi_phy_get_pll(struct msm_dsi_phy *phy); 160 161 #endif /* __DSI_CONNECTOR_H__ */ 162 163