drivers/gpu/drm/msm/dsi/dsi.h

   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