drivers/gpu/drm/i915/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/drmP.h>
  28 #include <drm/drm_crtc.h>
  29 #include "intel_drv.h"
  30
  31 /* Dual Link support */
  32 #define DSI_DUAL_LINK_NONE              0
  33 #define DSI_DUAL_LINK_FRONT_BACK        1
  34 #define DSI_DUAL_LINK_PIXEL_ALT         2
  35
  36 struct intel_dsi_device {
  37         unsigned int panel_id;
  38         const char *name;
  39         const struct intel_dsi_dev_ops *dev_ops;
  40         void *dev_priv;
  41 };
  42
  43 struct intel_dsi_dev_ops {
  44         bool (*init)(struct intel_dsi_device *dsi);
  45
  46         void (*panel_reset)(struct intel_dsi_device *dsi);
  47
  48         void (*disable_panel_power)(struct intel_dsi_device *dsi);
  49
  50         /* one time programmable commands if needed */
  51         void (*send_otp_cmds)(struct intel_dsi_device *dsi);
  52
  53         /* This callback must be able to assume DSI commands can be sent */
  54         void (*enable)(struct intel_dsi_device *dsi);
  55
  56         /* This callback must be able to assume DSI commands can be sent */
  57         void (*disable)(struct intel_dsi_device *dsi);
  58
  59         int (*mode_valid)(struct intel_dsi_device *dsi,
  60                           struct drm_display_mode *mode);
  61
  62         bool (*mode_fixup)(struct intel_dsi_device *dsi,
  63                            const struct drm_display_mode *mode,
  64                            struct drm_display_mode *adjusted_mode);
  65
  66         void (*mode_set)(struct intel_dsi_device *dsi,
  67                          struct drm_display_mode *mode,
  68                          struct drm_display_mode *adjusted_mode);
  69
  70         enum drm_connector_status (*detect)(struct intel_dsi_device *dsi);
  71
  72         bool (*get_hw_state)(struct intel_dsi_device *dev);
  73
  74         struct drm_display_mode *(*get_modes)(struct intel_dsi_device *dsi);
  75
  76         void (*destroy) (struct intel_dsi_device *dsi);
  77 };
  78
  79 struct intel_dsi {
  80         struct intel_encoder base;
  81
  82         struct intel_dsi_device dev;
  83
  84         struct intel_connector *attached_connector;
  85
  86         /* bit mask of ports being driven */
  87         u16 ports;
  88
  89         /* if true, use HS mode, otherwise LP */
  90         bool hs;
  91
  92         /* virtual channel */
  93         int channel;
  94
  95         /* Video mode or command mode */
  96         u16 operation_mode;
  97
  98         /* number of DSI lanes */
  99         unsigned int lane_count;
 100
 101         /* video mode pixel format for MIPI_DSI_FUNC_PRG register */
 102         u32 pixel_format;
 103
 104         /* video mode format for MIPI_VIDEO_MODE_FORMAT register */
 105         u32 video_mode_format;
 106
 107         /* eot for MIPI_EOT_DISABLE register */
 108         u8 eotp_pkt;
 109         u8 clock_stop;
 110
 111         u8 escape_clk_div;
 112         u8 dual_link;
 113         u8 pixel_overlap;
 114         u32 port_bits;
 115         u32 bw_timer;
 116         u32 dphy_reg;
 117         u32 video_frmt_cfg_bits;
 118         u16 lp_byte_clk;
 119
 120         /* timeouts in byte clocks */
 121         u16 lp_rx_timeout;
 122         u16 turn_arnd_val;
 123         u16 rst_timer_val;
 124         u16 hs_to_lp_count;
 125         u16 clk_lp_to_hs_count;
 126         u16 clk_hs_to_lp_count;
 127
 128         u16 init_count;
 129         u32 pclk;
 130         u16 burst_mode_ratio;
 131
 132         /* all delays in ms */
 133         u16 backlight_off_delay;
 134         u16 backlight_on_delay;
 135         u16 panel_on_delay;
 136         u16 panel_off_delay;
 137         u16 panel_pwr_cycle_delay;
 138 };
 139
 140 /* XXX: Transitional before dual port configuration */
 141 static inline enum port intel_dsi_pipe_to_port(enum pipe pipe)
 142 {
 143         if (pipe == PIPE_A)
 144                 return PORT_A;
 145         else if (pipe == PIPE_B)
 146                 return PORT_C;
 147
 148         WARN(1, "DSI on pipe %c, assuming port C\n", pipe_name(pipe));
 149         return PORT_C;
 150 }
 151
 152 #define for_each_dsi_port(__port, __ports_mask) \
 153         for ((__port) = PORT_A; (__port) < I915_MAX_PORTS; (__port)++)  \
 154                 if ((__ports_mask) & (1 << (__port)))
 155
 156 static inline struct intel_dsi *enc_to_intel_dsi(struct drm_encoder *encoder)
 157 {
 158         return container_of(encoder, struct intel_dsi, base.base);
 159 }
 160
 161 extern void vlv_enable_dsi_pll(struct intel_encoder *encoder);
 162 extern void vlv_disable_dsi_pll(struct intel_encoder *encoder);
 163 extern u32 vlv_get_dsi_pclk(struct intel_encoder *encoder, int pipe_bpp);
 164
 165 extern struct intel_dsi_dev_ops vbt_generic_dsi_display_ops;
 166
 167 #endif /* _INTEL_DSI_H */