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https://github.com/edk2-porting/linux-next.git
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drm/nvd0/gpio: initial implementation
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
parent
eeb3ca12b4
commit
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@ -5884,9 +5884,15 @@ parse_dcb_gpio_table(struct nvbios *bios)
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}
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e->line = (e->entry & 0x0000001f) >> 0;
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e->state_default = (e->entry & 0x01000000) >> 24;
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e->state[0] = (e->entry & 0x18000000) >> 27;
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e->state[1] = (e->entry & 0x60000000) >> 29;
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if (gpio[0] == 0x40) {
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e->state_default = (e->entry & 0x01000000) >> 24;
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e->state[0] = (e->entry & 0x18000000) >> 27;
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e->state[1] = (e->entry & 0x60000000) >> 29;
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} else {
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e->state_default = (e->entry & 0x00000080) >> 7;
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e->state[0] = (entry[4] >> 4) & 3;
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e->state[1] = (entry[4] >> 6) & 3;
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}
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}
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}
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@ -1391,6 +1391,8 @@ int nv50_gpio_init(struct drm_device *dev);
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void nv50_gpio_fini(struct drm_device *dev);
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int nv50_gpio_get(struct drm_device *dev, enum dcb_gpio_tag tag);
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int nv50_gpio_set(struct drm_device *dev, enum dcb_gpio_tag tag, int state);
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int nvd0_gpio_get(struct drm_device *dev, enum dcb_gpio_tag tag);
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int nvd0_gpio_set(struct drm_device *dev, enum dcb_gpio_tag tag, int state);
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int nv50_gpio_irq_register(struct drm_device *, enum dcb_gpio_tag,
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void (*)(void *, int), void *);
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void nv50_gpio_irq_unregister(struct drm_device *, enum dcb_gpio_tag,
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@ -459,8 +459,13 @@ static int nouveau_init_engine_ptrs(struct drm_device *dev)
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engine->display.create = nouveau_stub_init;
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engine->display.init = nouveau_stub_init;
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engine->display.destroy = nouveau_stub_takedown;
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engine->gpio.init = nouveau_stub_init;
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engine->gpio.init = nv50_gpio_init;
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engine->gpio.takedown = nouveau_stub_takedown;
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engine->gpio.get = nvd0_gpio_get;
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engine->gpio.set = nvd0_gpio_set;
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engine->gpio.irq_register = nv50_gpio_irq_register;
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engine->gpio.irq_unregister = nv50_gpio_irq_unregister;
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engine->gpio.irq_enable = nv50_gpio_irq_enable;
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engine->vram.init = nvc0_vram_init;
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engine->vram.takedown = nv50_vram_fini;
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engine->vram.get = nvc0_vram_new;
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@ -97,6 +97,37 @@ nv50_gpio_set(struct drm_device *dev, enum dcb_gpio_tag tag, int state)
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return 0;
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}
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int
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nvd0_gpio_get(struct drm_device *dev, enum dcb_gpio_tag tag)
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{
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struct dcb_gpio_entry *gpio;
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u32 v;
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gpio = nouveau_bios_gpio_entry(dev, tag);
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if (!gpio)
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return -ENOENT;
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v = nv_rd32(dev, 0x00d610 + (gpio->line * 4));
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v &= 0x00004000;
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return (!!v == (gpio->state[1] & 1));
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}
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int
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nvd0_gpio_set(struct drm_device *dev, enum dcb_gpio_tag tag, int state)
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{
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struct dcb_gpio_entry *gpio;
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u32 v;
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gpio = nouveau_bios_gpio_entry(dev, tag);
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if (!gpio)
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return -ENOENT;
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v = gpio->state[state] ^ 2;
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nv_mask(dev, 0x00d610 + (gpio->line * 4), 0x00003000, v << 12);
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return 0;
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}
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int
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nv50_gpio_irq_register(struct drm_device *dev, enum dcb_gpio_tag tag,
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void (*handler)(void *, int), void *data)
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