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_28NM_8960, 35 MSM_DSI_PHY_MAX 36 }; 37 38 #define DSI_DEV_REGULATOR_MAX 8 39 #define DSI_BUS_CLK_MAX 4 40 41 /* Regulators for DSI devices */ 42 struct dsi_reg_entry { 43 char name[32]; 44 int min_voltage; 45 int max_voltage; 46 int enable_load; 47 int disable_load; 48 }; 49 50 struct dsi_reg_config { 51 int num; 52 struct dsi_reg_entry regs[DSI_DEV_REGULATOR_MAX]; 53 }; 54 55 struct msm_dsi { 56 struct drm_device *dev; 57 struct platform_device *pdev; 58 59 /* connector managed by us when we're connected to a drm_panel */ 60 struct drm_connector *connector; 61 /* internal dsi bridge attached to MDP interface */ 62 struct drm_bridge *bridge; 63 64 struct mipi_dsi_host *host; 65 struct msm_dsi_phy *phy; 66 67 /* 68 * panel/external_bridge connected to dsi bridge output, only one of the 69 * two can be valid at a time 70 */ 71 struct drm_panel *panel; 72 struct drm_bridge *external_bridge; 73 unsigned long device_flags; 74 75 struct device *phy_dev; 76 bool phy_enabled; 77 78 /* the encoders we are hooked to (outside of dsi block) */ 79 struct drm_encoder *encoders[MSM_DSI_ENCODER_NUM]; 80 81 int id; 82 }; 83 84 /* dsi manager */ 85 struct drm_bridge *msm_dsi_manager_bridge_init(u8 id); 86 void msm_dsi_manager_bridge_destroy(struct drm_bridge *bridge); 87 struct drm_connector *msm_dsi_manager_connector_init(u8 id); 88 struct drm_connector *msm_dsi_manager_ext_bridge_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 dma_base, 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 static inline bool msm_dsi_device_connected(struct msm_dsi *msm_dsi) 100 { 101 return msm_dsi->panel || msm_dsi->external_bridge; 102 } 103 104 struct drm_encoder *msm_dsi_get_encoder(struct msm_dsi *msm_dsi); 105 106 /* dsi pll */ 107 struct msm_dsi_pll; 108 #ifdef CONFIG_DRM_MSM_DSI_PLL 109 struct msm_dsi_pll *msm_dsi_pll_init(struct platform_device *pdev, 110 enum msm_dsi_phy_type type, int dsi_id); 111 void msm_dsi_pll_destroy(struct msm_dsi_pll *pll); 112 int msm_dsi_pll_get_clk_provider(struct msm_dsi_pll *pll, 113 struct clk **byte_clk_provider, struct clk **pixel_clk_provider); 114 void msm_dsi_pll_save_state(struct msm_dsi_pll *pll); 115 int msm_dsi_pll_restore_state(struct msm_dsi_pll *pll); 116 #else 117 static inline struct msm_dsi_pll *msm_dsi_pll_init(struct platform_device *pdev, 118 enum msm_dsi_phy_type type, int id) { 119 return ERR_PTR(-ENODEV); 120 } 121 static inline void msm_dsi_pll_destroy(struct msm_dsi_pll *pll) 122 { 123 } 124 static inline int msm_dsi_pll_get_clk_provider(struct msm_dsi_pll *pll, 125 struct clk **byte_clk_provider, struct clk **pixel_clk_provider) 126 { 127 return -ENODEV; 128 } 129 static inline void msm_dsi_pll_save_state(struct msm_dsi_pll *pll) 130 { 131 } 132 static inline int msm_dsi_pll_restore_state(struct msm_dsi_pll *pll) 133 { 134 return 0; 135 } 136 #endif 137 138 /* dsi host */ 139 int msm_dsi_host_xfer_prepare(struct mipi_dsi_host *host, 140 const struct mipi_dsi_msg *msg); 141 void msm_dsi_host_xfer_restore(struct mipi_dsi_host *host, 142 const struct mipi_dsi_msg *msg); 143 int msm_dsi_host_cmd_tx(struct mipi_dsi_host *host, 144 const struct mipi_dsi_msg *msg); 145 int msm_dsi_host_cmd_rx(struct mipi_dsi_host *host, 146 const struct mipi_dsi_msg *msg); 147 void msm_dsi_host_cmd_xfer_commit(struct mipi_dsi_host *host, 148 u32 dma_base, u32 len); 149 int msm_dsi_host_enable(struct mipi_dsi_host *host); 150 int msm_dsi_host_disable(struct mipi_dsi_host *host); 151 int msm_dsi_host_power_on(struct mipi_dsi_host *host); 152 int msm_dsi_host_power_off(struct mipi_dsi_host *host); 153 int msm_dsi_host_set_display_mode(struct mipi_dsi_host *host, 154 struct drm_display_mode *mode); 155 struct drm_panel *msm_dsi_host_get_panel(struct mipi_dsi_host *host, 156 unsigned long *panel_flags); 157 struct drm_bridge *msm_dsi_host_get_bridge(struct mipi_dsi_host *host); 158 int msm_dsi_host_register(struct mipi_dsi_host *host, bool check_defer); 159 void msm_dsi_host_unregister(struct mipi_dsi_host *host); 160 int msm_dsi_host_set_src_pll(struct mipi_dsi_host *host, 161 struct msm_dsi_pll *src_pll); 162 void msm_dsi_host_destroy(struct mipi_dsi_host *host); 163 int msm_dsi_host_modeset_init(struct mipi_dsi_host *host, 164 struct drm_device *dev); 165 int msm_dsi_host_init(struct msm_dsi *msm_dsi); 166 167 /* dsi phy */ 168 struct msm_dsi_phy; 169 void msm_dsi_phy_driver_register(void); 170 void msm_dsi_phy_driver_unregister(void); 171 int msm_dsi_phy_enable(struct msm_dsi_phy *phy, int src_pll_id, 172 const unsigned long bit_rate, const unsigned long esc_rate); 173 void msm_dsi_phy_disable(struct msm_dsi_phy *phy); 174 void msm_dsi_phy_get_clk_pre_post(struct msm_dsi_phy *phy, 175 u32 *clk_pre, u32 *clk_post); 176 struct msm_dsi_pll *msm_dsi_phy_get_pll(struct msm_dsi_phy *phy); 177 178 #endif /* __DSI_CONNECTOR_H__ */ 179 180