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  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 <drm/drm_mipi_dsi.h>
  30. #include "intel_drv.h"
  31.  
  32. /* Dual Link support */
  33. #define DSI_DUAL_LINK_NONE              0
  34. #define DSI_DUAL_LINK_FRONT_BACK        1
  35. #define DSI_DUAL_LINK_PIXEL_ALT         2
  36.  
  37. int dsi_pixel_format_bpp(int pixel_format);
  38.  
  39. struct intel_dsi_host;
  40.  
  41. struct intel_dsi {
  42.         struct intel_encoder base;
  43.  
  44.         struct drm_panel *panel;
  45.         struct intel_dsi_host *dsi_hosts[I915_MAX_PORTS];
  46.  
  47.         /* GPIO Desc for CRC based Panel control */
  48.         struct gpio_desc *gpio_panel;
  49.  
  50.         struct intel_connector *attached_connector;
  51.  
  52.         /* bit mask of ports being driven */
  53.         u16 ports;
  54.  
  55.         /* if true, use HS mode, otherwise LP */
  56.         bool hs;
  57.  
  58.         /* virtual channel */
  59.         int channel;
  60.  
  61.         /* Video mode or command mode */
  62.         u16 operation_mode;
  63.  
  64.         /* number of DSI lanes */
  65.         unsigned int lane_count;
  66.  
  67.         /* video mode pixel format for MIPI_DSI_FUNC_PRG register */
  68.         u32 pixel_format;
  69.  
  70.         /* video mode format for MIPI_VIDEO_MODE_FORMAT register */
  71.         u32 video_mode_format;
  72.  
  73.         /* eot for MIPI_EOT_DISABLE register */
  74.         u8 eotp_pkt;
  75.         u8 clock_stop;
  76.  
  77.         u8 escape_clk_div;
  78.         u8 dual_link;
  79.         u8 pixel_overlap;
  80.         u32 port_bits;
  81.         u32 bw_timer;
  82.         u32 dphy_reg;
  83.         u32 video_frmt_cfg_bits;
  84.         u16 lp_byte_clk;
  85.  
  86.         /* timeouts in byte clocks */
  87.         u16 lp_rx_timeout;
  88.         u16 turn_arnd_val;
  89.         u16 rst_timer_val;
  90.         u16 hs_to_lp_count;
  91.         u16 clk_lp_to_hs_count;
  92.         u16 clk_hs_to_lp_count;
  93.  
  94.         u16 init_count;
  95.         u32 pclk;
  96.         u16 burst_mode_ratio;
  97.  
  98.         /* all delays in ms */
  99.         u16 backlight_off_delay;
  100.         u16 backlight_on_delay;
  101.         u16 panel_on_delay;
  102.         u16 panel_off_delay;
  103.         u16 panel_pwr_cycle_delay;
  104. };
  105.  
  106. struct intel_dsi_host {
  107.         struct mipi_dsi_host base;
  108.         struct intel_dsi *intel_dsi;
  109.         enum port port;
  110.  
  111.         /* our little hack */
  112.         struct mipi_dsi_device *device;
  113. };
  114.  
  115. static inline struct intel_dsi_host *to_intel_dsi_host(struct mipi_dsi_host *h)
  116. {
  117.         return container_of(h, struct intel_dsi_host, base);
  118. }
  119.  
  120. #define for_each_dsi_port(__port, __ports_mask) \
  121.         for ((__port) = PORT_A; (__port) < I915_MAX_PORTS; (__port)++)  \
  122.                 for_each_if ((__ports_mask) & (1 << (__port)))
  123.  
  124. static inline struct intel_dsi *enc_to_intel_dsi(struct drm_encoder *encoder)
  125. {
  126.         return container_of(encoder, struct intel_dsi, base.base);
  127. }
  128.  
  129. extern void intel_enable_dsi_pll(struct intel_encoder *encoder);
  130. extern void intel_disable_dsi_pll(struct intel_encoder *encoder);
  131. extern u32 intel_dsi_get_pclk(struct intel_encoder *encoder, int pipe_bpp);
  132. extern void intel_dsi_reset_clocks(struct intel_encoder *encoder,
  133.                                                         enum port port);
  134.  
  135. struct drm_panel *vbt_panel_init(struct intel_dsi *intel_dsi, u16 panel_id);
  136.  
  137. #endif /* _INTEL_DSI_H */
  138.