LXR linux/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__
   4enum 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
  30struct 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
  43u16 dcb_gpio_table(struct nvkm_bios *, u8 *ver, u8 *hdr, u8 *cnt, u8 *len);
  44u16 dcb_gpio_entry(struct nvkm_bios *, int idx, int ent, u8 *ver, u8 *len);
  45u16 dcb_gpio_parse(struct nvkm_bios *, int idx, int ent, u8 *ver, u8 *len,
  46                   struct dcb_gpio_func *);
  47u16 dcb_gpio_match(struct nvkm_bios *, int idx, u8 func, u8 line,
  48                   u8 *ver, u8 *len, struct dcb_gpio_func *);
  49#endif
  50