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/drm_crtc.h>
  21 #include <drm/drm_mipi_dsi.h>
  22 #include <drm/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 struct msm_dsi_phy_shared_timings;
  31 struct msm_dsi_phy_clk_request;
  32
  33 enum msm_dsi_phy_type {
  34         MSM_DSI_PHY_28NM_HPM,
  35         MSM_DSI_PHY_28NM_LP,
  36         MSM_DSI_PHY_20NM,
  37         MSM_DSI_PHY_28NM_8960,
  38         MSM_DSI_PHY_14NM,
  39         MSM_DSI_PHY_10NM,
  40         MSM_DSI_PHY_MAX
  41 };
  42
  43 enum msm_dsi_phy_usecase {
  44         MSM_DSI_PHY_STANDALONE,
  45         MSM_DSI_PHY_MASTER,
  46         MSM_DSI_PHY_SLAVE,
  47 };
  48
  49 #define DSI_DEV_REGULATOR_MAX   8
  50 #define DSI_BUS_CLK_MAX         4
  51
  52 /* Regulators for DSI devices */
  53 struct dsi_reg_entry {
  54         char name[32];
  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         /* connector managed by us when we're connected to a drm_panel */
  69         struct drm_connector *connector;
  70         /* internal dsi bridge attached to MDP interface */
  71         struct drm_bridge *bridge;
  72
  73         struct mipi_dsi_host *host;
  74         struct msm_dsi_phy *phy;
  75
  76         /*
  77          * panel/external_bridge connected to dsi bridge output, only one of the
  78          * two can be valid at a time
  79          */
  80         struct drm_panel *panel;
  81         struct drm_bridge *external_bridge;
  82         unsigned long device_flags;
  83
  84         struct device *phy_dev;
  85         bool phy_enabled;
  86
  87         /* the encoder we are hooked to (outside of dsi block) */
  88         struct drm_encoder *encoder;
  89
  90         int id;
  91 };
  92
  93 /* dsi manager */
  94 struct drm_bridge *msm_dsi_manager_bridge_init(u8 id);
  95 void msm_dsi_manager_bridge_destroy(struct drm_bridge *bridge);
  96 struct drm_connector *msm_dsi_manager_connector_init(u8 id);
  97 struct drm_connector *msm_dsi_manager_ext_bridge_init(u8 id);
  98 int msm_dsi_manager_cmd_xfer(int id, const struct mipi_dsi_msg *msg);
  99 bool msm_dsi_manager_cmd_xfer_trigger(int id, u32 dma_base, u32 len);
 100 void msm_dsi_manager_attach_dsi_device(int id, u32 device_flags);
 101 int msm_dsi_manager_register(struct msm_dsi *msm_dsi);
 102 void msm_dsi_manager_unregister(struct msm_dsi *msm_dsi);
 103 bool msm_dsi_manager_validate_current_config(u8 id);
 104
 105 /* msm dsi */
 106 static inline bool msm_dsi_device_connected(struct msm_dsi *msm_dsi)
 107 {
 108         return msm_dsi->panel || msm_dsi->external_bridge;
 109 }
 110
 111 struct drm_encoder *msm_dsi_get_encoder(struct msm_dsi *msm_dsi);
 112
 113 /* dsi pll */
 114 struct msm_dsi_pll;
 115 #ifdef CONFIG_DRM_MSM_DSI_PLL
 116 struct msm_dsi_pll *msm_dsi_pll_init(struct platform_device *pdev,
 117                         enum msm_dsi_phy_type type, int dsi_id);
 118 void msm_dsi_pll_destroy(struct msm_dsi_pll *pll);
 119 int msm_dsi_pll_get_clk_provider(struct msm_dsi_pll *pll,
 120         struct clk **byte_clk_provider, struct clk **pixel_clk_provider);
 121 void msm_dsi_pll_save_state(struct msm_dsi_pll *pll);
 122 int msm_dsi_pll_restore_state(struct msm_dsi_pll *pll);
 123 int msm_dsi_pll_set_usecase(struct msm_dsi_pll *pll,
 124                             enum msm_dsi_phy_usecase uc);
 125 #else
 126 static inline struct msm_dsi_pll *msm_dsi_pll_init(struct platform_device *pdev,
 127                          enum msm_dsi_phy_type type, int id) {
 128         return ERR_PTR(-ENODEV);
 129 }
 130 static inline void msm_dsi_pll_destroy(struct msm_dsi_pll *pll)
 131 {
 132 }
 133 static inline int msm_dsi_pll_get_clk_provider(struct msm_dsi_pll *pll,
 134         struct clk **byte_clk_provider, struct clk **pixel_clk_provider)
 135 {
 136         return -ENODEV;
 137 }
 138 static inline void msm_dsi_pll_save_state(struct msm_dsi_pll *pll)
 139 {
 140 }
 141 static inline int msm_dsi_pll_restore_state(struct msm_dsi_pll *pll)
 142 {
 143         return 0;
 144 }
 145 static inline int msm_dsi_pll_set_usecase(struct msm_dsi_pll *pll,
 146                                           enum msm_dsi_phy_usecase uc)
 147 {
 148         return -ENODEV;
 149 }
 150 #endif
 151
 152 /* dsi host */
 153 struct msm_dsi_host;
 154 int msm_dsi_host_xfer_prepare(struct mipi_dsi_host *host,
 155                                         const struct mipi_dsi_msg *msg);
 156 void msm_dsi_host_xfer_restore(struct mipi_dsi_host *host,
 157                                         const struct mipi_dsi_msg *msg);
 158 int msm_dsi_host_cmd_tx(struct mipi_dsi_host *host,
 159                                         const struct mipi_dsi_msg *msg);
 160 int msm_dsi_host_cmd_rx(struct mipi_dsi_host *host,
 161                                         const struct mipi_dsi_msg *msg);
 162 void msm_dsi_host_cmd_xfer_commit(struct mipi_dsi_host *host,
 163                                         u32 dma_base, u32 len);
 164 int msm_dsi_host_enable(struct mipi_dsi_host *host);
 165 int msm_dsi_host_disable(struct mipi_dsi_host *host);
 166 int msm_dsi_host_power_on(struct mipi_dsi_host *host,
 167                         struct msm_dsi_phy_shared_timings *phy_shared_timings,
 168                         bool is_dual_dsi);
 169 int msm_dsi_host_power_off(struct mipi_dsi_host *host);
 170 int msm_dsi_host_set_display_mode(struct mipi_dsi_host *host,
 171                                   const struct drm_display_mode *mode);
 172 struct drm_panel *msm_dsi_host_get_panel(struct mipi_dsi_host *host,
 173                                         unsigned long *panel_flags);
 174 struct drm_bridge *msm_dsi_host_get_bridge(struct mipi_dsi_host *host);
 175 int msm_dsi_host_register(struct mipi_dsi_host *host, bool check_defer);
 176 void msm_dsi_host_unregister(struct mipi_dsi_host *host);
 177 int msm_dsi_host_set_src_pll(struct mipi_dsi_host *host,
 178                         struct msm_dsi_pll *src_pll);
 179 void msm_dsi_host_reset_phy(struct mipi_dsi_host *host);
 180 void msm_dsi_host_get_phy_clk_req(struct mipi_dsi_host *host,
 181         struct msm_dsi_phy_clk_request *clk_req,
 182         bool is_dual_dsi);
 183 void msm_dsi_host_destroy(struct mipi_dsi_host *host);
 184 int msm_dsi_host_modeset_init(struct mipi_dsi_host *host,
 185                                         struct drm_device *dev);
 186 int msm_dsi_host_init(struct msm_dsi *msm_dsi);
 187 int msm_dsi_runtime_suspend(struct device *dev);
 188 int msm_dsi_runtime_resume(struct device *dev);
 189 int dsi_link_clk_enable_6g(struct msm_dsi_host *msm_host);
 190 int dsi_link_clk_enable_v2(struct msm_dsi_host *msm_host);
 191 void dsi_link_clk_disable_6g(struct msm_dsi_host *msm_host);
 192 void dsi_link_clk_disable_v2(struct msm_dsi_host *msm_host);
 193 int dsi_tx_buf_alloc_6g(struct msm_dsi_host *msm_host, int size);
 194 int dsi_tx_buf_alloc_v2(struct msm_dsi_host *msm_host, int size);
 195 void *dsi_tx_buf_get_6g(struct msm_dsi_host *msm_host);
 196 void *dsi_tx_buf_get_v2(struct msm_dsi_host *msm_host);
 197 void dsi_tx_buf_put_6g(struct msm_dsi_host *msm_host);
 198 int dsi_dma_base_get_6g(struct msm_dsi_host *msm_host, uint64_t *iova);
 199 int dsi_dma_base_get_v2(struct msm_dsi_host *msm_host, uint64_t *iova);
 200 int dsi_clk_init_v2(struct msm_dsi_host *msm_host);
 201 int dsi_clk_init_6g_v2(struct msm_dsi_host *msm_host);
 202 int dsi_calc_clk_rate_v2(struct msm_dsi_host *msm_host, bool is_dual_dsi);
 203 int dsi_calc_clk_rate_6g(struct msm_dsi_host *msm_host, bool is_dual_dsi);
 204
 205 /* dsi phy */
 206 struct msm_dsi_phy;
 207 struct msm_dsi_phy_shared_timings {
 208         u32 clk_post;
 209         u32 clk_pre;
 210         bool clk_pre_inc_by_2;
 211 };
 212
 213 struct msm_dsi_phy_clk_request {
 214         unsigned long bitclk_rate;
 215         unsigned long escclk_rate;
 216 };
 217
 218 void msm_dsi_phy_driver_register(void);
 219 void msm_dsi_phy_driver_unregister(void);
 220 int msm_dsi_phy_enable(struct msm_dsi_phy *phy, int src_pll_id,
 221                         struct msm_dsi_phy_clk_request *clk_req);
 222 void msm_dsi_phy_disable(struct msm_dsi_phy *phy);
 223 void msm_dsi_phy_get_shared_timings(struct msm_dsi_phy *phy,
 224                         struct msm_dsi_phy_shared_timings *shared_timing);
 225 struct msm_dsi_pll *msm_dsi_phy_get_pll(struct msm_dsi_phy *phy);
 226 void msm_dsi_phy_set_usecase(struct msm_dsi_phy *phy,
 227                              enum msm_dsi_phy_usecase uc);
 228
 229 #endif /* __DSI_CONNECTOR_H__ */
 230