drivers/gpu/drm/i915/display/intel_dsi.h

   1 /*
   2  * Copyright © 2013 Intel Corporation
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  21  * DEALINGS IN THE SOFTWARE.
  22  */
  23
  24 #ifndef _INTEL_DSI_H
  25 #define _INTEL_DSI_H
  26
  27 #include <drm/drm_crtc.h>
  28 #include <drm/drm_mipi_dsi.h>
  29
  30 #include "intel_display_types.h"
  31
  32 #define INTEL_DSI_VIDEO_MODE    0
  33 #define INTEL_DSI_COMMAND_MODE  1
  34
  35 /* Dual Link support */
  36 #define DSI_DUAL_LINK_NONE              0
  37 #define DSI_DUAL_LINK_FRONT_BACK        1
  38 #define DSI_DUAL_LINK_PIXEL_ALT         2
  39
  40 struct intel_dsi_host;
  41
  42 struct intel_dsi {
  43         struct intel_encoder base;
  44
  45         struct intel_dsi_host *dsi_hosts[I915_MAX_PORTS];
  46         intel_wakeref_t io_wakeref[I915_MAX_PORTS];
  47
  48         /* GPIO Desc for panel and backlight control */
  49         struct gpio_desc *gpio_panel;
  50         struct gpio_desc *gpio_backlight;
  51
  52         struct intel_connector *attached_connector;
  53
  54         /* bit mask of ports (vlv dsi) or phys (icl dsi) being driven */
  55         union {
  56                 u16 ports;      /* VLV DSI */
  57                 u16 phys;       /* ICL DSI */
  58         };
  59
  60         /* if true, use HS mode, otherwise LP */
  61         bool hs;
  62
  63         /* virtual channel */
  64         int channel;
  65
  66         /* Video mode or command mode */
  67         u16 operation_mode;
  68
  69         /* number of DSI lanes */
  70         unsigned int lane_count;
  71
  72         /* i2c bus associated with the slave device */
  73         int i2c_bus_num;
  74
  75         /*
  76          * video mode pixel format
  77          *
  78          * XXX: consolidate on .format in struct mipi_dsi_device.
  79          */
  80         enum mipi_dsi_pixel_format pixel_format;
  81
  82         /* video mode format for MIPI_VIDEO_MODE_FORMAT register */
  83         u32 video_mode_format;
  84
  85         /* eot for MIPI_EOT_DISABLE register */
  86         u8 eotp_pkt;
  87         u8 clock_stop;
  88
  89         u8 escape_clk_div;
  90         u8 dual_link;
  91
  92         u16 dcs_backlight_ports;
  93         u16 dcs_cabc_ports;
  94
  95         /* RGB or BGR */
  96         bool bgr_enabled;
  97
  98         u8 pixel_overlap;
  99         u32 port_bits;
 100         u32 bw_timer;
 101         u32 dphy_reg;
 102
 103         /* data lanes dphy timing */
 104         u32 dphy_data_lane_reg;
 105         u32 video_frmt_cfg_bits;
 106         u16 lp_byte_clk;
 107
 108         /* timeouts in byte clocks */
 109         u16 hs_tx_timeout;
 110         u16 lp_rx_timeout;
 111         u16 turn_arnd_val;
 112         u16 rst_timer_val;
 113         u16 hs_to_lp_count;
 114         u16 clk_lp_to_hs_count;
 115         u16 clk_hs_to_lp_count;
 116
 117         u16 init_count;
 118         u32 pclk;
 119         u16 burst_mode_ratio;
 120
 121         /* all delays in ms */
 122         u16 backlight_off_delay;
 123         u16 backlight_on_delay;
 124         u16 panel_on_delay;
 125         u16 panel_off_delay;
 126         u16 panel_pwr_cycle_delay;
 127 };
 128
 129 struct intel_dsi_host {
 130         struct mipi_dsi_host base;
 131         struct intel_dsi *intel_dsi;
 132         enum port port;
 133
 134         /* our little hack */
 135         struct mipi_dsi_device *device;
 136 };
 137
 138 static inline struct intel_dsi_host *to_intel_dsi_host(struct mipi_dsi_host *h)
 139 {
 140         return container_of(h, struct intel_dsi_host, base);
 141 }
 142
 143 #define for_each_dsi_port(__port, __ports_mask) \
 144         for_each_port_masked(__port, __ports_mask)
 145 #define for_each_dsi_phy(__phy, __phys_mask) \
 146         for_each_phy_masked(__phy, __phys_mask)
 147
 148 static inline struct intel_dsi *enc_to_intel_dsi(struct intel_encoder *encoder)
 149 {
 150         return container_of(&encoder->base, struct intel_dsi, base.base);
 151 }
 152
 153 static inline bool is_vid_mode(struct intel_dsi *intel_dsi)
 154 {
 155         return intel_dsi->operation_mode == INTEL_DSI_VIDEO_MODE;
 156 }
 157
 158 static inline bool is_cmd_mode(struct intel_dsi *intel_dsi)
 159 {
 160         return intel_dsi->operation_mode == INTEL_DSI_COMMAND_MODE;
 161 }
 162
 163 static inline u16 intel_dsi_encoder_ports(struct intel_encoder *encoder)
 164 {
 165         return enc_to_intel_dsi(encoder)->ports;
 166 }
 167
 168 /* icl_dsi.c */
 169 void icl_dsi_init(struct drm_i915_private *dev_priv);
 170 void icl_dsi_frame_update(struct intel_crtc_state *crtc_state);
 171
 172 /* intel_dsi.c */
 173 int intel_dsi_bitrate(const struct intel_dsi *intel_dsi);
 174 int intel_dsi_tlpx_ns(const struct intel_dsi *intel_dsi);
 175 enum drm_panel_orientation
 176 intel_dsi_get_panel_orientation(struct intel_connector *connector);
 177
 178 /* vlv_dsi.c */
 179 void vlv_dsi_wait_for_fifo_empty(struct intel_dsi *intel_dsi, enum port port);
 180 enum mipi_dsi_pixel_format pixel_format_from_register_bits(u32 fmt);
 181 int intel_dsi_get_modes(struct drm_connector *connector);
 182 enum drm_mode_status intel_dsi_mode_valid(struct drm_connector *connector,
 183                                           struct drm_display_mode *mode);
 184 struct intel_dsi_host *intel_dsi_host_init(struct intel_dsi *intel_dsi,
 185                                            const struct mipi_dsi_host_ops *funcs,
 186                                            enum port port);
 187 void vlv_dsi_init(struct drm_i915_private *dev_priv);
 188
 189 /* vlv_dsi_pll.c */
 190 int vlv_dsi_pll_compute(struct intel_encoder *encoder,
 191                         struct intel_crtc_state *config);
 192 void vlv_dsi_pll_enable(struct intel_encoder *encoder,
 193                         const struct intel_crtc_state *config);
 194 void vlv_dsi_pll_disable(struct intel_encoder *encoder);
 195 u32 vlv_dsi_get_pclk(struct intel_encoder *encoder,
 196                      struct intel_crtc_state *config);
 197 void vlv_dsi_reset_clocks(struct intel_encoder *encoder, enum port port);
 198
 199 bool bxt_dsi_pll_is_enabled(struct drm_i915_private *dev_priv);
 200 int bxt_dsi_pll_compute(struct intel_encoder *encoder,
 201                         struct intel_crtc_state *config);
 202 void bxt_dsi_pll_enable(struct intel_encoder *encoder,
 203                         const struct intel_crtc_state *config);
 204 void bxt_dsi_pll_disable(struct intel_encoder *encoder);
 205 u32 bxt_dsi_get_pclk(struct intel_encoder *encoder,
 206                      struct intel_crtc_state *config);
 207 void bxt_dsi_reset_clocks(struct intel_encoder *encoder, enum port port);
 208
 209 /* intel_dsi_vbt.c */
 210 bool intel_dsi_vbt_init(struct intel_dsi *intel_dsi, u16 panel_id);
 211 void intel_dsi_vbt_gpio_init(struct intel_dsi *intel_dsi, bool panel_is_on);
 212 void intel_dsi_vbt_gpio_cleanup(struct intel_dsi *intel_dsi);
 213 void intel_dsi_vbt_exec_sequence(struct intel_dsi *intel_dsi,
 214                                  enum mipi_seq seq_id);
 215 void intel_dsi_msleep(struct intel_dsi *intel_dsi, int msec);
 216 void intel_dsi_log_params(struct intel_dsi *intel_dsi);
 217
 218 #endif /* _INTEL_DSI_H */