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

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * Copyright (c) 2015, The Linux Foundation. All rights reserved.
   4  */
   5
   6 #ifndef __DSI_CONNECTOR_H__
   7 #define __DSI_CONNECTOR_H__
   8
   9 #include <linux/of_platform.h>
  10 #include <linux/platform_device.h>
  11
  12 #include <drm/drm_bridge.h>
  13 #include <drm/drm_crtc.h>
  14 #include <drm/drm_mipi_dsi.h>
  15 #include <drm/drm_panel.h>
  16
  17 #include "msm_drv.h"
  18
  19 #define DSI_0   0
  20 #define DSI_1   1
  21 #define DSI_MAX 2
  22
  23 struct msm_dsi_phy_shared_timings;
  24 struct msm_dsi_phy_clk_request;
  25
  26 enum msm_dsi_phy_type {
  27         MSM_DSI_PHY_28NM_HPM,
  28         MSM_DSI_PHY_28NM_LP,
  29         MSM_DSI_PHY_20NM,
  30         MSM_DSI_PHY_28NM_8960,
  31         MSM_DSI_PHY_14NM,
  32         MSM_DSI_PHY_10NM,
  33         MSM_DSI_PHY_MAX
  34 };
  35
  36 enum msm_dsi_phy_usecase {
  37         MSM_DSI_PHY_STANDALONE,
  38         MSM_DSI_PHY_MASTER,
  39         MSM_DSI_PHY_SLAVE,
  40 };
  41
  42 #define DSI_DEV_REGULATOR_MAX   8
  43 #define DSI_BUS_CLK_MAX         4
  44
  45 /* Regulators for DSI devices */
  46 struct dsi_reg_entry {
  47         char name[32];
  48         int enable_load;
  49         int disable_load;
  50 };
  51
  52 struct dsi_reg_config {
  53         int num;
  54         struct dsi_reg_entry regs[DSI_DEV_REGULATOR_MAX];
  55 };
  56
  57 struct msm_dsi {
  58         struct drm_device *dev;
  59         struct platform_device *pdev;
  60
  61         /* connector managed by us when we're connected to a drm_panel */
  62         struct drm_connector *connector;
  63         /* internal dsi bridge attached to MDP interface */
  64         struct drm_bridge *bridge;
  65
  66         struct mipi_dsi_host *host;
  67         struct msm_dsi_phy *phy;
  68
  69         /*
  70          * panel/external_bridge connected to dsi bridge output, only one of the
  71          * two can be valid at a time
  72          */
  73         struct drm_panel *panel;
  74         struct drm_bridge *external_bridge;
  75
  76         struct device *phy_dev;
  77         bool phy_enabled;
  78
  79         /* the encoder we are hooked to (outside of dsi block) */
  80         struct drm_encoder *encoder;
  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 struct drm_connector *msm_dsi_manager_ext_bridge_init(u8 id);
  90 int msm_dsi_manager_cmd_xfer(int id, const struct mipi_dsi_msg *msg);
  91 bool msm_dsi_manager_cmd_xfer_trigger(int id, u32 dma_base, u32 len);
  92 void msm_dsi_manager_setup_encoder(int id);
  93 int msm_dsi_manager_register(struct msm_dsi *msm_dsi);
  94 void msm_dsi_manager_unregister(struct msm_dsi *msm_dsi);
  95 bool msm_dsi_manager_validate_current_config(u8 id);
  96
  97 /* msm dsi */
  98 static inline bool msm_dsi_device_connected(struct msm_dsi *msm_dsi)
  99 {
 100         return msm_dsi->panel || msm_dsi->external_bridge;
 101 }
 102
 103 struct drm_encoder *msm_dsi_get_encoder(struct msm_dsi *msm_dsi);
 104
 105 /* dsi pll */
 106 struct msm_dsi_pll;
 107 #ifdef CONFIG_DRM_MSM_DSI_PLL
 108 struct msm_dsi_pll *msm_dsi_pll_init(struct platform_device *pdev,
 109                         enum msm_dsi_phy_type type, int dsi_id);
 110 void msm_dsi_pll_destroy(struct msm_dsi_pll *pll);
 111 int msm_dsi_pll_get_clk_provider(struct msm_dsi_pll *pll,
 112         struct clk **byte_clk_provider, struct clk **pixel_clk_provider);
 113 void msm_dsi_pll_save_state(struct msm_dsi_pll *pll);
 114 int msm_dsi_pll_restore_state(struct msm_dsi_pll *pll);
 115 int msm_dsi_pll_set_usecase(struct msm_dsi_pll *pll,
 116                             enum msm_dsi_phy_usecase uc);
 117 #else
 118 static inline struct msm_dsi_pll *msm_dsi_pll_init(struct platform_device *pdev,
 119                          enum msm_dsi_phy_type type, int id) {
 120         return ERR_PTR(-ENODEV);
 121 }
 122 static inline void msm_dsi_pll_destroy(struct msm_dsi_pll *pll)
 123 {
 124 }
 125 static inline int msm_dsi_pll_get_clk_provider(struct msm_dsi_pll *pll,
 126         struct clk **byte_clk_provider, struct clk **pixel_clk_provider)
 127 {
 128         return -ENODEV;
 129 }
 130 static inline void msm_dsi_pll_save_state(struct msm_dsi_pll *pll)
 131 {
 132 }
 133 static inline int msm_dsi_pll_restore_state(struct msm_dsi_pll *pll)
 134 {
 135         return 0;
 136 }
 137 static inline int msm_dsi_pll_set_usecase(struct msm_dsi_pll *pll,
 138                                           enum msm_dsi_phy_usecase uc)
 139 {
 140         return -ENODEV;
 141 }
 142 #endif
 143
 144 /* dsi host */
 145 struct msm_dsi_host;
 146 int msm_dsi_host_xfer_prepare(struct mipi_dsi_host *host,
 147                                         const struct mipi_dsi_msg *msg);
 148 void msm_dsi_host_xfer_restore(struct mipi_dsi_host *host,
 149                                         const struct mipi_dsi_msg *msg);
 150 int msm_dsi_host_cmd_tx(struct mipi_dsi_host *host,
 151                                         const struct mipi_dsi_msg *msg);
 152 int msm_dsi_host_cmd_rx(struct mipi_dsi_host *host,
 153                                         const struct mipi_dsi_msg *msg);
 154 void msm_dsi_host_cmd_xfer_commit(struct mipi_dsi_host *host,
 155                                         u32 dma_base, u32 len);
 156 int msm_dsi_host_enable(struct mipi_dsi_host *host);
 157 int msm_dsi_host_disable(struct mipi_dsi_host *host);
 158 int msm_dsi_host_power_on(struct mipi_dsi_host *host,
 159                         struct msm_dsi_phy_shared_timings *phy_shared_timings,
 160                         bool is_dual_dsi);
 161 int msm_dsi_host_power_off(struct mipi_dsi_host *host);
 162 int msm_dsi_host_set_display_mode(struct mipi_dsi_host *host,
 163                                   const struct drm_display_mode *mode);
 164 struct drm_panel *msm_dsi_host_get_panel(struct mipi_dsi_host *host);
 165 unsigned long msm_dsi_host_get_mode_flags(struct mipi_dsi_host *host);
 166 struct drm_bridge *msm_dsi_host_get_bridge(struct mipi_dsi_host *host);
 167 int msm_dsi_host_register(struct mipi_dsi_host *host, bool check_defer);
 168 void msm_dsi_host_unregister(struct mipi_dsi_host *host);
 169 int msm_dsi_host_set_src_pll(struct mipi_dsi_host *host,
 170                         struct msm_dsi_pll *src_pll);
 171 void msm_dsi_host_reset_phy(struct mipi_dsi_host *host);
 172 void msm_dsi_host_get_phy_clk_req(struct mipi_dsi_host *host,
 173         struct msm_dsi_phy_clk_request *clk_req,
 174         bool is_dual_dsi);
 175 void msm_dsi_host_destroy(struct mipi_dsi_host *host);
 176 int msm_dsi_host_modeset_init(struct mipi_dsi_host *host,
 177                                         struct drm_device *dev);
 178 int msm_dsi_host_init(struct msm_dsi *msm_dsi);
 179 int msm_dsi_runtime_suspend(struct device *dev);
 180 int msm_dsi_runtime_resume(struct device *dev);
 181 int dsi_link_clk_set_rate_6g(struct msm_dsi_host *msm_host);
 182 int dsi_link_clk_set_rate_v2(struct msm_dsi_host *msm_host);
 183 int dsi_link_clk_enable_6g(struct msm_dsi_host *msm_host);
 184 int dsi_link_clk_enable_v2(struct msm_dsi_host *msm_host);
 185 void dsi_link_clk_disable_6g(struct msm_dsi_host *msm_host);
 186 void dsi_link_clk_disable_v2(struct msm_dsi_host *msm_host);
 187 int dsi_tx_buf_alloc_6g(struct msm_dsi_host *msm_host, int size);
 188 int dsi_tx_buf_alloc_v2(struct msm_dsi_host *msm_host, int size);
 189 void *dsi_tx_buf_get_6g(struct msm_dsi_host *msm_host);
 190 void *dsi_tx_buf_get_v2(struct msm_dsi_host *msm_host);
 191 void dsi_tx_buf_put_6g(struct msm_dsi_host *msm_host);
 192 int dsi_dma_base_get_6g(struct msm_dsi_host *msm_host, uint64_t *iova);
 193 int dsi_dma_base_get_v2(struct msm_dsi_host *msm_host, uint64_t *iova);
 194 int dsi_clk_init_v2(struct msm_dsi_host *msm_host);
 195 int dsi_clk_init_6g_v2(struct msm_dsi_host *msm_host);
 196 int dsi_calc_clk_rate_v2(struct msm_dsi_host *msm_host, bool is_dual_dsi);
 197 int dsi_calc_clk_rate_6g(struct msm_dsi_host *msm_host, bool is_dual_dsi);
 198
 199 /* dsi phy */
 200 struct msm_dsi_phy;
 201 struct msm_dsi_phy_shared_timings {
 202         u32 clk_post;
 203         u32 clk_pre;
 204         bool clk_pre_inc_by_2;
 205 };
 206
 207 struct msm_dsi_phy_clk_request {
 208         unsigned long bitclk_rate;
 209         unsigned long escclk_rate;
 210 };
 211
 212 void msm_dsi_phy_driver_register(void);
 213 void msm_dsi_phy_driver_unregister(void);
 214 int msm_dsi_phy_enable(struct msm_dsi_phy *phy, int src_pll_id,
 215                         struct msm_dsi_phy_clk_request *clk_req);
 216 void msm_dsi_phy_disable(struct msm_dsi_phy *phy);
 217 void msm_dsi_phy_get_shared_timings(struct msm_dsi_phy *phy,
 218                         struct msm_dsi_phy_shared_timings *shared_timing);
 219 struct msm_dsi_pll *msm_dsi_phy_get_pll(struct msm_dsi_phy *phy);
 220 void msm_dsi_phy_set_usecase(struct msm_dsi_phy *phy,
 221                              enum msm_dsi_phy_usecase uc);
 222
 223 #endif /* __DSI_CONNECTOR_H__ */
 224