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 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