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drm/nvd0/gpio: initial implementation

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Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Ben Skeggs 2011-07-03 02:57:35 +10:00
parent eeb3ca12b4
commit d7f8172ca9
4 changed files with 48 additions and 4 deletions
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12
drivers/gpu/drm/nouveau/nouveau_bios.c
View File

@ -5884,9 +5884,15 @@ parse_dcb_gpio_table(struct nvbios *bios)
}
e->line = (e->entry & 0x0000001f) >> 0;
e->state_default = (e->entry & 0x01000000) >> 24;
e->state[0] = (e->entry & 0x18000000) >> 27;
e->state[1] = (e->entry & 0x60000000) >> 29;
if (gpio[0] == 0x40) {
e->state_default = (e->entry & 0x01000000) >> 24;
e->state[0] = (e->entry & 0x18000000) >> 27;
e->state[1] = (e->entry & 0x60000000) >> 29;
} else {
e->state_default = (e->entry & 0x00000080) >> 7;
e->state[0] = (entry[4] >> 4) & 3;
e->state[1] = (entry[4] >> 6) & 3;
}
}
}

2
drivers/gpu/drm/nouveau/nouveau_drv.h
View File

@ -1391,6 +1391,8 @@ int nv50_gpio_init(struct drm_device *dev);
void nv50_gpio_fini(struct drm_device *dev);
int nv50_gpio_get(struct drm_device *dev, enum dcb_gpio_tag tag);
int nv50_gpio_set(struct drm_device *dev, enum dcb_gpio_tag tag, int state);
int nvd0_gpio_get(struct drm_device *dev, enum dcb_gpio_tag tag);
int nvd0_gpio_set(struct drm_device *dev, enum dcb_gpio_tag tag, int state);
int nv50_gpio_irq_register(struct drm_device *, enum dcb_gpio_tag,
void (*)(void *, int), void *);
void nv50_gpio_irq_unregister(struct drm_device *, enum dcb_gpio_tag,

7
drivers/gpu/drm/nouveau/nouveau_state.c
View File

@ -459,8 +459,13 @@ static int nouveau_init_engine_ptrs(struct drm_device *dev)
engine->display.create = nouveau_stub_init;
engine->display.init = nouveau_stub_init;
engine->display.destroy = nouveau_stub_takedown;
engine->gpio.init = nouveau_stub_init;
engine->gpio.init = nv50_gpio_init;
engine->gpio.takedown = nouveau_stub_takedown;
engine->gpio.get = nvd0_gpio_get;
engine->gpio.set = nvd0_gpio_set;
engine->gpio.irq_register = nv50_gpio_irq_register;
engine->gpio.irq_unregister = nv50_gpio_irq_unregister;
engine->gpio.irq_enable = nv50_gpio_irq_enable;
engine->vram.init = nvc0_vram_init;
engine->vram.takedown = nv50_vram_fini;
engine->vram.get = nvc0_vram_new;

31
drivers/gpu/drm/nouveau/nv50_gpio.c
View File

@ -97,6 +97,37 @@ nv50_gpio_set(struct drm_device *dev, enum dcb_gpio_tag tag, int state)
return 0;
}
int
nvd0_gpio_get(struct drm_device *dev, enum dcb_gpio_tag tag)
{
struct dcb_gpio_entry *gpio;
u32 v;
gpio = nouveau_bios_gpio_entry(dev, tag);
if (!gpio)
return -ENOENT;
v = nv_rd32(dev, 0x00d610 + (gpio->line * 4));
v &= 0x00004000;
return (!!v == (gpio->state[1] & 1));
}
int
nvd0_gpio_set(struct drm_device *dev, enum dcb_gpio_tag tag, int state)
{
struct dcb_gpio_entry *gpio;
u32 v;
gpio = nouveau_bios_gpio_entry(dev, tag);
if (!gpio)
return -ENOENT;
v = gpio->state[state] ^ 2;
nv_mask(dev, 0x00d610 + (gpio->line * 4), 0x00003000, v << 12);
return 0;
}
int
nv50_gpio_irq_register(struct drm_device *dev, enum dcb_gpio_tag tag,
void (*handler)(void *, int), void *data)