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

   1 /* SPDX-License-Identifier: GPL-2.0 */
   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_TVDAC0 = 0x0c,
   7         DCB_GPIO_TVDAC1 = 0x2d,
   8         DCB_GPIO_FAN = 0x09,
   9         DCB_GPIO_FAN_SENSE = 0x3d,
  10         DCB_GPIO_LOGO_LED_PWM = 0x84,
  11         DCB_GPIO_UNUSED = 0xff,
  12         DCB_GPIO_VID0 = 0x04,
  13         DCB_GPIO_VID1 = 0x05,
  14         DCB_GPIO_VID2 = 0x06,
  15         DCB_GPIO_VID3 = 0x1a,
  16         DCB_GPIO_VID4 = 0x73,
  17         DCB_GPIO_VID5 = 0x74,
  18         DCB_GPIO_VID6 = 0x75,
  19         DCB_GPIO_VID7 = 0x76,
  20         DCB_GPIO_VID_PWM = 0x81,
  21 };
  22
  23 #define DCB_GPIO_LOG_DIR     0x02
  24 #define DCB_GPIO_LOG_DIR_OUT 0x00
  25 #define DCB_GPIO_LOG_DIR_IN  0x02
  26 #define DCB_GPIO_LOG_VAL     0x01
  27 #define DCB_GPIO_LOG_VAL_LO  0x00
  28 #define DCB_GPIO_LOG_VAL_HI  0x01
  29
  30 struct dcb_gpio_func {
  31         u8 func;
  32         u8 line;
  33         u8 log[2];
  34
  35         /* so far, "param" seems to only have an influence on PWM-related
  36          * GPIOs such as FAN_CONTROL and PANEL_BACKLIGHT_LEVEL.
  37          * if param equals 1, hardware PWM is available
  38          * if param equals 0, the host should toggle the GPIO itself
  39          */
  40         u8 param;
  41 };
  42
  43 u16 dcb_gpio_table(struct nvkm_bios *, u8 *ver, u8 *hdr, u8 *cnt, u8 *len);
  44 u16 dcb_gpio_entry(struct nvkm_bios *, int idx, int ent, u8 *ver, u8 *len);
  45 u16 dcb_gpio_parse(struct nvkm_bios *, int idx, int ent, u8 *ver, u8 *len,
  46                    struct dcb_gpio_func *);
  47 u16 dcb_gpio_match(struct nvkm_bios *, int idx, u8 func, u8 line,
  48                    u8 *ver, u8 *len, struct dcb_gpio_func *);
  49 #endif