drivers/gpu/drm/nouveau/include/nvkm/subdev/bios/gpio.h

   1 /* SPDX-License-Identifier: MIT */
   2 #ifndef __NVBIOS_GPIO_H__
   3 #define __NVBIOS_GPIO_H__
   4 enum dcb_gpio_func_name {
   5         DCB_GPIO_PANEL_POWER = 0x01,
   6         DCB_GPIO_FAN = 0x09,
   7         DCB_GPIO_TVDAC0 = 0x0c,
   8         DCB_GPIO_THERM_EXT_POWER_EVENT = 0x10,
   9         DCB_GPIO_TVDAC1 = 0x2d,
  10         DCB_GPIO_FAN_SENSE = 0x3d,
  11         DCB_GPIO_POWER_ALERT = 0x4c,
  12         DCB_GPIO_EXT_POWER_LOW = 0x79,
  13         DCB_GPIO_LOGO_LED_PWM = 0x84,
  14         DCB_GPIO_UNUSED = 0xff,
  15         DCB_GPIO_VID0 = 0x04,
  16         DCB_GPIO_VID1 = 0x05,
  17         DCB_GPIO_VID2 = 0x06,
  18         DCB_GPIO_VID3 = 0x1a,
  19         DCB_GPIO_VID4 = 0x73,
  20         DCB_GPIO_VID5 = 0x74,
  21         DCB_GPIO_VID6 = 0x75,
  22         DCB_GPIO_VID7 = 0x76,
  23         DCB_GPIO_VID_PWM = 0x81,
  24 };
  25
  26 #define DCB_GPIO_LOG_DIR     0x02
  27 #define DCB_GPIO_LOG_DIR_OUT 0x00
  28 #define DCB_GPIO_LOG_DIR_IN  0x02
  29 #define DCB_GPIO_LOG_VAL     0x01
  30 #define DCB_GPIO_LOG_VAL_LO  0x00
  31 #define DCB_GPIO_LOG_VAL_HI  0x01
  32
  33 struct dcb_gpio_func {
  34         u8 func;
  35         u8 line;
  36         u8 log[2];
  37
  38         /* so far, "param" seems to only have an influence on PWM-related
  39          * GPIOs such as FAN_CONTROL and PANEL_BACKLIGHT_LEVEL.
  40          * if param equals 1, hardware PWM is available
  41          * if param equals 0, the host should toggle the GPIO itself
  42          */
  43         u8 param;
  44 };
  45
  46 u16 dcb_gpio_table(struct nvkm_bios *, u8 *ver, u8 *hdr, u8 *cnt, u8 *len);
  47 u16 dcb_gpio_entry(struct nvkm_bios *, int idx, int ent, u8 *ver, u8 *len);
  48 u16 dcb_gpio_parse(struct nvkm_bios *, int idx, int ent, u8 *ver, u8 *len,
  49                    struct dcb_gpio_func *);
  50 u16 dcb_gpio_match(struct nvkm_bios *, int idx, u8 func, u8 line,
  51                    u8 *ver, u8 *len, struct dcb_gpio_func *);
  52 #endif