ptn3460.h

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/* SPDX-License-Identifier: GPL-2.0-only */
 
#ifndef _I2C_PTN3460_H_
#define _I2C_PTN3460_H_
 
#include <types.h>
 
#define PTN_EDID_OFF            0x00
#define PTN_EDID_LEN            0x80
#define PTN_CONFIG_OFF          0x80
#define PTN_CONFIG_LEN          0x19
#define PTN_FLASH_CFG_OFF       0xE8
#define PTN_FLASH_CFG_LEN       0x04
#define PTN_MAX_EDID_NUM        6
#define PTN_ENABLE_EMULATION    (1 << 0)
 
/* Define some error codes that can be used */
#define PTN_SUCCESS             0x00000000
#define PTN_CFG_MODIFIED        0x00000001
#define PTN_BUS_ERROR           0x10000000
#define PTN_INVALID_EDID        0x20000000
#define PTN_INVALID_EDID_BLOCK  0x30000000
#define PTN_ERROR               0x40000000
 
struct ptn_3460_config {
        u8      dp_interface_ctrl;      /* DisplayPort interface control */
        u8      lvds_interface_ctrl1;   /* LVDS interface control register 1 */
        u8      lvds_interface_ctrl2;   /* LVDS interface control register 2 */
        u8      lvds_interface_ctrl3;   /* LVDS interface control register 3 */
        u8      edid_rom_emulation;     /* select which EDID-block is emulated */
        u8      edid_rom_access_ctrl;   /* select which EDID block to map to 0..0x7F */
        u8      pwm_min[3];             /* smallest PWM frequency for back light */
        u8      pwm_max[3];             /* biggest PWM frequency for back light */
        u8      fast_link_ctrl;         /* Fast link training control register */
        u8      pin_cfg_ctrl1;          /* Pin configuration control register 1 */
        u8      pin_cfg_ctrl2;          /* Pin configuration control register 2 */
        u8      pwm_default;            /* Default PWM bit count in DPCD register */
        u16     pwm_value;              /* Current PWM bit count in DPCD register */
        u8      pwm_default_freq;       /* Default PWM frequency in DPCD register */
        u8      t3_timing;              /* Panel T3 timing value */
        u8      t12_timing;             /* Panel T12 timing value */
        u8      backlight_ctrl;         /* Back light control register */
        u8      t2_delay;               /* Panel T2 delay */
        u8      t4_timing;              /* Panel T4 timing value */
        u8      t5_delay;               /* Panel T5 delay */
} __packed;
 
struct ptn_3460_flash {
        u8      cmd;                    /* Flash command (erase or erase and flash) */
        u16     magic;                  /* Magic number needed by the flash algorithm */
        u8      trigger;                /* Trigger for starting flash operation */
} __packed;
 
/* We need functions which we can call to get mainboard specific data */
/* These functions can be implemented somewhere else but must exist. */
extern enum cb_err mb_get_edid(uint8_t edid_data[0x80]);
extern uint8_t mb_select_edid_table(void);
extern int mb_adjust_cfg(struct ptn_3460_config *cfg_ptr);
 
#endif /* _I2C_PTN3460_H_ */