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 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 /* connector managed by us when we're connected to a drm_panel */ 58 struct drm_connector *connector; 59 /* internal dsi bridge attached to MDP interface */ 60 struct drm_bridge *bridge; 61 62 struct mipi_dsi_host *host; 63 struct msm_dsi_phy *phy; 64 65 /* 66 * panel/external_bridge connected to dsi bridge output, only one of the 67 * two can be valid at a time 68 */ 69 struct drm_panel *panel; 70 struct drm_bridge *external_bridge; 71 unsigned long device_flags; 72 73 struct device *phy_dev; 74 bool phy_enabled; 75 76 /* the encoders we are hooked to (outside of dsi block) */ 77 struct drm_encoder *encoders[MSM_DSI_ENCODER_NUM]; 78 79 int id; 80 }; 81 82 /* dsi manager */ 83 struct drm_bridge *msm_dsi_manager_bridge_init(u8 id); 84 void msm_dsi_manager_bridge_destroy(struct drm_bridge *bridge); 85 struct drm_connector *msm_dsi_manager_connector_init(u8 id); 86 struct drm_connector *msm_dsi_manager_ext_bridge_init(u8 id); 87 int msm_dsi_manager_phy_enable(int id, 88 const unsigned long bit_rate, const unsigned long esc_rate, 89 u32 *clk_pre, u32 *clk_post); 90 void msm_dsi_manager_phy_disable(int id); 91 int msm_dsi_manager_cmd_xfer(int id, const struct mipi_dsi_msg *msg); 92 bool msm_dsi_manager_cmd_xfer_trigger(int id, u32 dma_base, u32 len); 93 int msm_dsi_manager_register(struct msm_dsi *msm_dsi); 94 void msm_dsi_manager_unregister(struct msm_dsi *msm_dsi); 95 96 /* msm dsi */ 97 static inline bool msm_dsi_device_connected(struct msm_dsi *msm_dsi) 98 { 99 return msm_dsi->panel || msm_dsi->external_bridge; 100 } 101 102 struct drm_encoder *msm_dsi_get_encoder(struct msm_dsi *msm_dsi); 103 104 /* dsi pll */ 105 struct msm_dsi_pll; 106 #ifdef CONFIG_DRM_MSM_DSI_PLL 107 struct msm_dsi_pll *msm_dsi_pll_init(struct platform_device *pdev, 108 enum msm_dsi_phy_type type, int dsi_id); 109 void msm_dsi_pll_destroy(struct msm_dsi_pll *pll); 110 int msm_dsi_pll_get_clk_provider(struct msm_dsi_pll *pll, 111 struct clk **byte_clk_provider, struct clk **pixel_clk_provider); 112 void msm_dsi_pll_save_state(struct msm_dsi_pll *pll); 113 int msm_dsi_pll_restore_state(struct msm_dsi_pll *pll); 114 #else 115 static inline struct msm_dsi_pll *msm_dsi_pll_init(struct platform_device *pdev, 116 enum msm_dsi_phy_type type, int id) { 117 return ERR_PTR(-ENODEV); 118 } 119 static inline void msm_dsi_pll_destroy(struct msm_dsi_pll *pll) 120 { 121 } 122 static inline int msm_dsi_pll_get_clk_provider(struct msm_dsi_pll *pll, 123 struct clk **byte_clk_provider, struct clk **pixel_clk_provider) 124 { 125 return -ENODEV; 126 } 127 static inline void msm_dsi_pll_save_state(struct msm_dsi_pll *pll) 128 { 129 } 130 static inline int msm_dsi_pll_restore_state(struct msm_dsi_pll *pll) 131 { 132 return 0; 133 } 134 #endif 135 136 /* dsi host */ 137 int msm_dsi_host_xfer_prepare(struct mipi_dsi_host *host, 138 const struct mipi_dsi_msg *msg); 139 void msm_dsi_host_xfer_restore(struct mipi_dsi_host *host, 140 const struct mipi_dsi_msg *msg); 141 int msm_dsi_host_cmd_tx(struct mipi_dsi_host *host, 142 const struct mipi_dsi_msg *msg); 143 int msm_dsi_host_cmd_rx(struct mipi_dsi_host *host, 144 const struct mipi_dsi_msg *msg); 145 void msm_dsi_host_cmd_xfer_commit(struct mipi_dsi_host *host, 146 u32 dma_base, u32 len); 147 int msm_dsi_host_enable(struct mipi_dsi_host *host); 148 int msm_dsi_host_disable(struct mipi_dsi_host *host); 149 int msm_dsi_host_power_on(struct mipi_dsi_host *host); 150 int msm_dsi_host_power_off(struct mipi_dsi_host *host); 151 int msm_dsi_host_set_display_mode(struct mipi_dsi_host *host, 152 struct drm_display_mode *mode); 153 struct drm_panel *msm_dsi_host_get_panel(struct mipi_dsi_host *host, 154 unsigned long *panel_flags); 155 struct drm_bridge *msm_dsi_host_get_bridge(struct mipi_dsi_host *host); 156 int msm_dsi_host_register(struct mipi_dsi_host *host, bool check_defer); 157 void msm_dsi_host_unregister(struct mipi_dsi_host *host); 158 int msm_dsi_host_set_src_pll(struct mipi_dsi_host *host, 159 struct msm_dsi_pll *src_pll); 160 void msm_dsi_host_destroy(struct mipi_dsi_host *host); 161 int msm_dsi_host_modeset_init(struct mipi_dsi_host *host, 162 struct drm_device *dev); 163 int msm_dsi_host_init(struct msm_dsi *msm_dsi); 164 165 /* dsi phy */ 166 struct msm_dsi_phy; 167 void msm_dsi_phy_driver_register(void); 168 void msm_dsi_phy_driver_unregister(void); 169 int msm_dsi_phy_enable(struct msm_dsi_phy *phy, int src_pll_id, 170 const unsigned long bit_rate, const unsigned long esc_rate); 171 void msm_dsi_phy_disable(struct msm_dsi_phy *phy); 172 void msm_dsi_phy_get_clk_pre_post(struct msm_dsi_phy *phy, 173 u32 *clk_pre, u32 *clk_post); 174 struct msm_dsi_pll *msm_dsi_phy_get_pll(struct msm_dsi_phy *phy); 175 176 #endif /* __DSI_CONNECTOR_H__ */ 177 178