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| author | Ben Skeggs <bskeggs@redhat.com> | 2011-07-02 20:57:35 +0400 |
|---|---|---|
| committer | Ben Skeggs <bskeggs@redhat.com> | 2011-09-20 10:05:36 +0400 |
| commit | d7f8172ca93b61135d6db293c6440b2e97fc87ee (patch) | |
| tree | a3124b1956a2cacdacb0d04035996415484f6357 /drivers/gpu/drm/nouveau/nv50_gpio.c | |
| parent | eeb3ca12b4658c569bd60fe60c4c45c627e842a6 (diff) | |
| download | linux-d7f8172ca93b61135d6db293c6440b2e97fc87ee.tar.xz | |
drm/nvd0/gpio: initial implementation
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/nouveau/nv50_gpio.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nv50_gpio.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nv50_gpio.c b/drivers/gpu/drm/nouveau/nv50_gpio.c index d4f4206dad7e..793a5ccca121 100644 --- a/drivers/gpu/drm/nouveau/nv50_gpio.c +++ b/drivers/gpu/drm/nouveau/nv50_gpio.c @@ -98,6 +98,37 @@ 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) +{ + 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) { |