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drm/nouveau/gpio: expose the PWM/TOGGLE parameter found in the gpio vbios table

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Signed-off-by: Martin Peres <martin.peres@labri.fr>
Reviewed-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Martin Peres 2012-05-12 15:28:51 +02:00 committed by Ben Skeggs
parent d89c8ce071
commit e36199980b
2 changed files with 10 additions and 0 deletions
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7
drivers/gpu/drm/nouveau/core/include/subdev/bios/gpio.h
View File

@ -16,6 +16,13 @@ struct dcb_gpio_func {
u8 func;
u8 line;
u8 log[2];
/* so far, "param" seems to only have an influence on PWM-related
* GPIOs such as FAN_CONTROL and PANEL_BACKLIGHT_LEVEL.
* if param equals 1, hardware PWM is available
* if param equals 0, the host should toggle the GPIO itself
*/
u8 param;
};
u16 dcb_gpio_table(struct nouveau_bios *);

3
drivers/gpu/drm/nouveau/core/subdev/bios/gpio.c
View File

@ -71,6 +71,7 @@ dcb_gpio_parse(struct nouveau_bios *bios, int idx, u8 func, u8 line,
.func = (data & 0x07e0) >> 5,
.log[0] = (data & 0x1800) >> 11,
.log[1] = (data & 0x6000) >> 13,
.param = !!(data & 0x8000),
};
} else
if (ver < 0x41) {
@ -80,6 +81,7 @@ dcb_gpio_parse(struct nouveau_bios *bios, int idx, u8 func, u8 line,
.func = (data & 0x0000ff00) >> 8,
.log[0] = (data & 0x18000000) >> 27,
.log[1] = (data & 0x60000000) >> 29,
.param = !!(data & 0x80000000),
};
} else {
u32 data = nv_ro32(bios, entry + 0);
@ -89,6 +91,7 @@ dcb_gpio_parse(struct nouveau_bios *bios, int idx, u8 func, u8 line,
.func = (data & 0x0000ff00) >> 8,
.log[0] = (data1 & 0x30) >> 4,
.log[1] = (data1 & 0xc0) >> 6,
.param = !!(data & 0x80000000),
};
}