include/drm/bridge/dw_mipi_dsi.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * Copyright (C) STMicroelectronics SA 2017
   4  *
   5  * Authors: Philippe Cornu <philippe.cornu@st.com>
   6  *          Yannick Fertre <yannick.fertre@st.com>
   7  */
   8
   9 #ifndef __DW_MIPI_DSI__
  10 #define __DW_MIPI_DSI__
  11
  12 #include <linux/types.h>
  13
  14 #include <drm/drm_atomic.h>
  15 #include <drm/drm_bridge.h>
  16 #include <drm/drm_connector.h>
  17 #include <drm/drm_crtc.h>
  18 #include <drm/drm_modes.h>
  19
  20 struct drm_display_mode;
  21 struct drm_encoder;
  22 struct dw_mipi_dsi;
  23 struct mipi_dsi_device;
  24 struct platform_device;
  25
  26 struct dw_mipi_dsi_dphy_timing {
  27         u16 data_hs2lp;
  28         u16 data_lp2hs;
  29         u16 clk_hs2lp;
  30         u16 clk_lp2hs;
  31 };
  32
  33 struct dw_mipi_dsi_phy_ops {
  34         int (*init)(void *priv_data);
  35         void (*power_on)(void *priv_data);
  36         void (*power_off)(void *priv_data);
  37         int (*get_lane_mbps)(void *priv_data,
  38                              const struct drm_display_mode *mode,
  39                              unsigned long mode_flags, u32 lanes, u32 format,
  40                              unsigned int *lane_mbps);
  41         int (*get_timing)(void *priv_data, unsigned int lane_mbps,
  42                           struct dw_mipi_dsi_dphy_timing *timing);
  43         int (*get_esc_clk_rate)(void *priv_data, unsigned int *esc_clk_rate);
  44 };
  45
  46 struct dw_mipi_dsi_host_ops {
  47         int (*attach)(void *priv_data,
  48                       struct mipi_dsi_device *dsi);
  49         int (*detach)(void *priv_data,
  50                       struct mipi_dsi_device *dsi);
  51 };
  52
  53 struct dw_mipi_dsi_plat_data {
  54         void __iomem *base;
  55         unsigned int max_data_lanes;
  56
  57         enum drm_mode_status (*mode_valid)(void *priv_data,
  58                                            const struct drm_display_mode *mode,
  59                                            unsigned long mode_flags,
  60                                            u32 lanes, u32 format);
  61
  62         bool (*mode_fixup)(void *priv_data, const struct drm_display_mode *mode,
  63                            struct drm_display_mode *adjusted_mode);
  64
  65         u32 *(*get_input_bus_fmts)(void *priv_data,
  66                                    struct drm_bridge *bridge,
  67                                    struct drm_bridge_state *bridge_state,
  68                                    struct drm_crtc_state *crtc_state,
  69                                    struct drm_connector_state *conn_state,
  70                                    u32 output_fmt,
  71                                    unsigned int *num_input_fmts);
  72
  73         const struct dw_mipi_dsi_phy_ops *phy_ops;
  74         const struct dw_mipi_dsi_host_ops *host_ops;
  75
  76         void *priv_data;
  77 };
  78
  79 struct dw_mipi_dsi *dw_mipi_dsi_probe(struct platform_device *pdev,
  80                                       const struct dw_mipi_dsi_plat_data
  81                                       *plat_data);
  82 void dw_mipi_dsi_remove(struct dw_mipi_dsi *dsi);
  83 int dw_mipi_dsi_bind(struct dw_mipi_dsi *dsi, struct drm_encoder *encoder);
  84 void dw_mipi_dsi_unbind(struct dw_mipi_dsi *dsi);
  85 void dw_mipi_dsi_set_slave(struct dw_mipi_dsi *dsi, struct dw_mipi_dsi *slave);
  86 struct drm_bridge *dw_mipi_dsi_get_bridge(struct dw_mipi_dsi *dsi);
  87
  88 #endif /* __DW_MIPI_DSI__ */