src/drivers/i2c/ptn3460/ptn3460.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 #ifndef _I2C_PTN3460_H_
   4 #define _I2C_PTN3460_H_
   5
   6 #include <types.h>
   7
   8 #define PTN_EDID_OFF            0x00
   9 #define PTN_EDID_LEN            0x80
  10 #define PTN_CONFIG_OFF          0x80
  11 #define PTN_CONFIG_LEN          0x19
  12 #define PTN_FLASH_CFG_OFF       0xE8
  13 #define PTN_FLASH_CFG_LEN       0x04
  14 #define PTN_MAX_EDID_NUM        6
  15 #define PTN_ENABLE_EMULATION    (1 << 0)
  16
  17 /* Define some error codes that can be used */
  18 #define PTN_SUCCESS             0x00000000
  19 #define PTN_BUS_ERROR           0x10000000
  20 #define PTN_INVALID_EDID        0x20000000
  21 #define PTN_INVALID_EDID_BLOCK  0x30000000
  22 #define PTN_ERROR               0x40000000
  23
  24 struct ptn_3460_config {
  25         u8      dp_interface_ctrl;      /* DisplayPort interface control */
  26         u8      lvds_interface_ctrl1;   /* LVDS interface control register 1 */
  27         u8      lvds_interface_ctrl2;   /* LVDS interface control register 2 */
  28         u8      lvds_interface_ctrl3;   /* LVDS interface control register 3 */
  29         u8      edid_rom_emulation;     /* select which EDID-block is emulated */
  30         u8      edid_rom_access_ctrl;   /* select which EDID block to map to 0..0x7F */
  31         u8      pwm_min[3];             /* smallest PWM frequency for back light */
  32         u8      pwm_max[3];             /* biggest PWM frequency for back light */
  33         u8      fast_link_ctrl;         /* Fast link training control register */
  34         u8      pin_cfg_ctrl1;          /* Pin configuration control register 1 */
  35         u8      pin_cfg_ctrl2;          /* Pin configuration control register 2 */
  36         u8      pwm_default;            /* Default PWM bit count in DPCD register */
  37         u16     pwm_value;              /* Current PWM bit count in DPCD register */
  38         u8      pwm_default_freq;       /* Default PWM frequency in DPCD register */
  39         u8      t3_timing;              /* Panel T3 timing value */
  40         u8      t12_timing;             /* Panel T12 timing value */
  41         u8      backlight_ctrl;         /* Back light control register */
  42         u8      t2_delay;               /* Panel T2 delay */
  43         u8      t4_timing;              /* Panel T4 timing value */
  44         u8      t5_delay;               /* Panel T5 delay */
  45 } __packed;
  46
  47 struct ptn_3460_flash {
  48         u8      cmd;                    /* Flash command (erase or erase and flash) */
  49         u16     magic;                  /* Magic number needed by the flash algorithm */
  50         u8      trigger;                /* Trigger for starting flash operation */
  51 } __packed;
  52
  53 /* We need functions which we can call to get mainboard specific data */
  54 enum cb_err mainboard_ptn3460_get_edid(uint8_t edid_data[PTN_EDID_LEN]);
  55 uint8_t mainboard_ptn3460_select_edid_table(void);
  56 enum cb_err mainboard_ptn3460_config(struct ptn_3460_config *cfg_ptr);
  57
  58 #endif /* _I2C_PTN3460_H_ */