root/drivers/gpu/drm/i915/display/intel_bios.h

INCLUDED FROM

   1 /*
   2  * Copyright © 2016 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 FROM,
  20  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  21  * SOFTWARE.
  22  */
  23 
  24 /*
  25  * Please use intel_vbt_defs.h for VBT private data, to hide and abstract away
  26  * the VBT from the rest of the driver. Add the parsed, clean data to struct
  27  * intel_vbt_data within struct drm_i915_private.
  28  */
  29 
  30 #ifndef _INTEL_BIOS_H_
  31 #define _INTEL_BIOS_H_
  32 
  33 #include <linux/types.h>
  34 
  35 #include <drm/i915_drm.h>
  36 
  37 struct drm_i915_private;
  38 
  39 enum intel_backlight_type {
  40         INTEL_BACKLIGHT_PMIC,
  41         INTEL_BACKLIGHT_LPSS,
  42         INTEL_BACKLIGHT_DISPLAY_DDI,
  43         INTEL_BACKLIGHT_DSI_DCS,
  44         INTEL_BACKLIGHT_PANEL_DRIVER_INTERFACE,
  45         INTEL_BACKLIGHT_VESA_EDP_AUX_INTERFACE,
  46 };
  47 
  48 struct edp_power_seq {
  49         u16 t1_t3;
  50         u16 t8;
  51         u16 t9;
  52         u16 t10;
  53         u16 t11_t12;
  54 } __packed;
  55 
  56 /*
  57  * MIPI Sequence Block definitions
  58  *
  59  * Note the VBT spec has AssertReset / DeassertReset swapped from their
  60  * usual naming, we use the proper names here to avoid confusion when
  61  * reading the code.
  62  */
  63 enum mipi_seq {
  64         MIPI_SEQ_END = 0,
  65         MIPI_SEQ_DEASSERT_RESET,        /* Spec says MipiAssertResetPin */
  66         MIPI_SEQ_INIT_OTP,
  67         MIPI_SEQ_DISPLAY_ON,
  68         MIPI_SEQ_DISPLAY_OFF,
  69         MIPI_SEQ_ASSERT_RESET,          /* Spec says MipiDeassertResetPin */
  70         MIPI_SEQ_BACKLIGHT_ON,          /* sequence block v2+ */
  71         MIPI_SEQ_BACKLIGHT_OFF,         /* sequence block v2+ */
  72         MIPI_SEQ_TEAR_ON,               /* sequence block v2+ */
  73         MIPI_SEQ_TEAR_OFF,              /* sequence block v3+ */
  74         MIPI_SEQ_POWER_ON,              /* sequence block v3+ */
  75         MIPI_SEQ_POWER_OFF,             /* sequence block v3+ */
  76         MIPI_SEQ_MAX
  77 };
  78 
  79 enum mipi_seq_element {
  80         MIPI_SEQ_ELEM_END = 0,
  81         MIPI_SEQ_ELEM_SEND_PKT,
  82         MIPI_SEQ_ELEM_DELAY,
  83         MIPI_SEQ_ELEM_GPIO,
  84         MIPI_SEQ_ELEM_I2C,              /* sequence block v2+ */
  85         MIPI_SEQ_ELEM_SPI,              /* sequence block v3+ */
  86         MIPI_SEQ_ELEM_PMIC,             /* sequence block v3+ */
  87         MIPI_SEQ_ELEM_MAX
  88 };
  89 
  90 #define MIPI_DSI_UNDEFINED_PANEL_ID     0
  91 #define MIPI_DSI_GENERIC_PANEL_ID       1
  92 
  93 struct mipi_config {
  94         u16 panel_id;
  95 
  96         /* General Params */
  97         u32 enable_dithering:1;
  98         u32 rsvd1:1;
  99         u32 is_bridge:1;
 100 
 101         u32 panel_arch_type:2;
 102         u32 is_cmd_mode:1;
 103 
 104 #define NON_BURST_SYNC_PULSE    0x1
 105 #define NON_BURST_SYNC_EVENTS   0x2
 106 #define BURST_MODE              0x3
 107         u32 video_transfer_mode:2;
 108 
 109         u32 cabc_supported:1;
 110 #define PPS_BLC_PMIC   0
 111 #define PPS_BLC_SOC    1
 112         u32 pwm_blc:1;
 113 
 114         /* Bit 13:10 */
 115 #define PIXEL_FORMAT_RGB565                     0x1
 116 #define PIXEL_FORMAT_RGB666                     0x2
 117 #define PIXEL_FORMAT_RGB666_LOOSELY_PACKED      0x3
 118 #define PIXEL_FORMAT_RGB888                     0x4
 119         u32 videomode_color_format:4;
 120 
 121         /* Bit 15:14 */
 122 #define ENABLE_ROTATION_0       0x0
 123 #define ENABLE_ROTATION_90      0x1
 124 #define ENABLE_ROTATION_180     0x2
 125 #define ENABLE_ROTATION_270     0x3
 126         u32 rotation:2;
 127         u32 bta_enabled:1;
 128         u32 rsvd2:15;
 129 
 130         /* 2 byte Port Description */
 131 #define DUAL_LINK_NOT_SUPPORTED 0
 132 #define DUAL_LINK_FRONT_BACK    1
 133 #define DUAL_LINK_PIXEL_ALT     2
 134         u16 dual_link:2;
 135         u16 lane_cnt:2;
 136         u16 pixel_overlap:3;
 137         u16 rgb_flip:1;
 138 #define DL_DCS_PORT_A                   0x00
 139 #define DL_DCS_PORT_C                   0x01
 140 #define DL_DCS_PORT_A_AND_C             0x02
 141         u16 dl_dcs_cabc_ports:2;
 142         u16 dl_dcs_backlight_ports:2;
 143         u16 rsvd3:4;
 144 
 145         u16 rsvd4;
 146 
 147         u8 rsvd5;
 148         u32 target_burst_mode_freq;
 149         u32 dsi_ddr_clk;
 150         u32 bridge_ref_clk;
 151 
 152 #define  BYTE_CLK_SEL_20MHZ             0
 153 #define  BYTE_CLK_SEL_10MHZ             1
 154 #define  BYTE_CLK_SEL_5MHZ              2
 155         u8 byte_clk_sel:2;
 156 
 157         u8 rsvd6:6;
 158 
 159         /* DPHY Flags */
 160         u16 dphy_param_valid:1;
 161         u16 eot_pkt_disabled:1;
 162         u16 enable_clk_stop:1;
 163         u16 rsvd7:13;
 164 
 165         u32 hs_tx_timeout;
 166         u32 lp_rx_timeout;
 167         u32 turn_around_timeout;
 168         u32 device_reset_timer;
 169         u32 master_init_timer;
 170         u32 dbi_bw_timer;
 171         u32 lp_byte_clk_val;
 172 
 173         /*  4 byte Dphy Params */
 174         u32 prepare_cnt:6;
 175         u32 rsvd8:2;
 176         u32 clk_zero_cnt:8;
 177         u32 trail_cnt:5;
 178         u32 rsvd9:3;
 179         u32 exit_zero_cnt:6;
 180         u32 rsvd10:2;
 181 
 182         u32 clk_lane_switch_cnt;
 183         u32 hl_switch_cnt;
 184 
 185         u32 rsvd11[6];
 186 
 187         /* timings based on dphy spec */
 188         u8 tclk_miss;
 189         u8 tclk_post;
 190         u8 rsvd12;
 191         u8 tclk_pre;
 192         u8 tclk_prepare;
 193         u8 tclk_settle;
 194         u8 tclk_term_enable;
 195         u8 tclk_trail;
 196         u16 tclk_prepare_clkzero;
 197         u8 rsvd13;
 198         u8 td_term_enable;
 199         u8 teot;
 200         u8 ths_exit;
 201         u8 ths_prepare;
 202         u16 ths_prepare_hszero;
 203         u8 rsvd14;
 204         u8 ths_settle;
 205         u8 ths_skip;
 206         u8 ths_trail;
 207         u8 tinit;
 208         u8 tlpx;
 209         u8 rsvd15[3];
 210 
 211         /* GPIOs */
 212         u8 panel_enable;
 213         u8 bl_enable;
 214         u8 pwm_enable;
 215         u8 reset_r_n;
 216         u8 pwr_down_r;
 217         u8 stdby_r_n;
 218 
 219 } __packed;
 220 
 221 /* all delays have a unit of 100us */
 222 struct mipi_pps_data {
 223         u16 panel_on_delay;
 224         u16 bl_enable_delay;
 225         u16 bl_disable_delay;
 226         u16 panel_off_delay;
 227         u16 panel_power_cycle_delay;
 228 } __packed;
 229 
 230 void intel_bios_init(struct drm_i915_private *dev_priv);
 231 void intel_bios_driver_remove(struct drm_i915_private *dev_priv);
 232 bool intel_bios_is_valid_vbt(const void *buf, size_t size);
 233 bool intel_bios_is_tv_present(struct drm_i915_private *dev_priv);
 234 bool intel_bios_is_lvds_present(struct drm_i915_private *dev_priv, u8 *i2c_pin);
 235 bool intel_bios_is_port_present(struct drm_i915_private *dev_priv, enum port port);
 236 bool intel_bios_is_port_edp(struct drm_i915_private *dev_priv, enum port port);
 237 bool intel_bios_is_port_dp_dual_mode(struct drm_i915_private *dev_priv, enum port port);
 238 bool intel_bios_is_dsi_present(struct drm_i915_private *dev_priv, enum port *port);
 239 bool intel_bios_is_port_hpd_inverted(const struct drm_i915_private *i915,
 240                                      enum port port);
 241 bool intel_bios_is_lspcon_present(const struct drm_i915_private *i915,
 242                                   enum port port);
 243 enum aux_ch intel_bios_port_aux_ch(struct drm_i915_private *dev_priv, enum port port);
 244 
 245 #endif /* _INTEL_BIOS_H_ */