LXR linux/drivers/gpu/drm/i915/intel

   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
  37struct intel_dsi_host;
  38
  39struct intel_dsi {
  40        struct intel_encoder base;
  41
  42        struct drm_panel *panel;
  43        struct intel_dsi_host *dsi_hosts[I915_MAX_PORTS];
  44
  45        /* GPIO Desc for CRC based Panel control */
  46        struct gpio_desc *gpio_panel;
  47
  48        struct intel_connector *attached_connector;
  49
  50        /* bit mask of ports being driven */
  51        u16 ports;
  52
  53        /* if true, use HS mode, otherwise LP */
  54        bool hs;
  55
  56        /* virtual channel */
  57        int channel;
  58
  59        /* Video mode or command mode */
  60        u16 operation_mode;
  61
  62        /* number of DSI lanes */
  63        unsigned int lane_count;
  64
  65        /*
  66         * video mode pixel format
  67         *
  68         * XXX: consolidate on .format in struct mipi_dsi_device.
  69         */
  70        enum mipi_dsi_pixel_format pixel_format;
  71
  72        /* video mode format for MIPI_VIDEO_MODE_FORMAT register */
  73        u32 video_mode_format;
  74
  75        /* eot for MIPI_EOT_DISABLE register */
  76        u8 eotp_pkt;
  77        u8 clock_stop;
  78
  79        u8 escape_clk_div;
  80        u8 dual_link;
  81
  82        u16 dcs_backlight_ports;
  83        u16 dcs_cabc_ports;
  84
  85        u8 pixel_overlap;
  86        u32 port_bits;
  87        u32 bw_timer;
  88        u32 dphy_reg;
  89        u32 video_frmt_cfg_bits;
  90        u16 lp_byte_clk;
  91
  92        /* timeouts in byte clocks */
  93        u16 lp_rx_timeout;
  94        u16 turn_arnd_val;
  95        u16 rst_timer_val;
  96        u16 hs_to_lp_count;
  97        u16 clk_lp_to_hs_count;
  98        u16 clk_hs_to_lp_count;
  99
 100        u16 init_count;
 101        u32 pclk;
 102        u16 burst_mode_ratio;
 103
 104        /* all delays in ms */
 105        u16 backlight_off_delay;
 106        u16 backlight_on_delay;
 107        u16 panel_on_delay;
 108        u16 panel_off_delay;
 109        u16 panel_pwr_cycle_delay;
 110};
 111
 112struct intel_dsi_host {
 113        struct mipi_dsi_host base;
 114        struct intel_dsi *intel_dsi;
 115        enum port port;
 116
 117        /* our little hack */
 118        struct mipi_dsi_device *device;
 119};
 120
 121static inline struct intel_dsi_host *to_intel_dsi_host(struct mipi_dsi_host *h)
 122{
 123        return container_of(h, struct intel_dsi_host, base);
 124}
 125
 126#define for_each_dsi_port(__port, __ports_mask) for_each_port_masked(__port, __ports_mask)
 127
 128static inline struct intel_dsi *enc_to_intel_dsi(struct drm_encoder *encoder)
 129{
 130        return container_of(encoder, struct intel_dsi, base.base);
 131}
 132
 133bool intel_dsi_pll_is_enabled(struct drm_i915_private *dev_priv);
 134int intel_compute_dsi_pll(struct intel_encoder *encoder,
 135                          struct intel_crtc_state *config);
 136void intel_enable_dsi_pll(struct intel_encoder *encoder,
 137                          const struct intel_crtc_state *config);
 138void intel_disable_dsi_pll(struct intel_encoder *encoder);
 139u32 intel_dsi_get_pclk(struct intel_encoder *encoder, int pipe_bpp,
 140                       struct intel_crtc_state *config);
 141void intel_dsi_reset_clocks(struct intel_encoder *encoder,
 142                            enum port port);
 143
 144struct drm_panel *vbt_panel_init(struct intel_dsi *intel_dsi, u16 panel_id);
 145enum mipi_dsi_pixel_format pixel_format_from_register_bits(u32 fmt);
 146
 147#endif /* _INTEL_DSI_H */
 148