diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/core/subdev/gpio/base.c')
-rw-r--r-- | drivers/gpu/drm/nouveau/core/subdev/gpio/base.c | 140 |
1 files changed, 11 insertions, 129 deletions
diff --git a/drivers/gpu/drm/nouveau/core/subdev/gpio/base.c b/drivers/gpu/drm/nouveau/core/subdev/gpio/base.c index 9fb0f9b92d4..d422acc9af1 100644 --- a/drivers/gpu/drm/nouveau/core/subdev/gpio/base.c +++ b/drivers/gpu/drm/nouveau/core/subdev/gpio/base.c @@ -102,135 +102,19 @@ nouveau_gpio_get(struct nouveau_gpio *gpio, int idx, u8 tag, u8 line) return ret; } -static int -nouveau_gpio_irq(struct nouveau_gpio *gpio, int idx, u8 tag, u8 line, bool on) -{ - struct dcb_gpio_func func; - int ret; - - ret = nouveau_gpio_find(gpio, idx, tag, line, &func); - if (ret == 0) { - if (idx == 0 && gpio->irq_enable) - gpio->irq_enable(gpio, func.line, on); - else - ret = -ENODEV; - } - - return ret; -} - -struct gpio_isr { - struct nouveau_gpio *gpio; - struct list_head head; - struct work_struct work; - int idx; - struct dcb_gpio_func func; - void (*handler)(void *, int); - void *data; - bool inhibit; -}; - -static void -nouveau_gpio_isr_bh(struct work_struct *work) -{ - struct gpio_isr *isr = container_of(work, struct gpio_isr, work); - struct nouveau_gpio *gpio = isr->gpio; - unsigned long flags; - int state; - - state = nouveau_gpio_get(gpio, isr->idx, isr->func.func, - isr->func.line); - if (state >= 0) - isr->handler(isr->data, state); - - spin_lock_irqsave(&gpio->lock, flags); - isr->inhibit = false; - spin_unlock_irqrestore(&gpio->lock, flags); -} - -static void -nouveau_gpio_isr_run(struct nouveau_gpio *gpio, int idx, u32 line_mask) -{ - struct gpio_isr *isr; - - if (idx != 0) - return; - - spin_lock(&gpio->lock); - list_for_each_entry(isr, &gpio->isr, head) { - if (line_mask & (1 << isr->func.line)) { - if (isr->inhibit) - continue; - isr->inhibit = true; - schedule_work(&isr->work); - } - } - spin_unlock(&gpio->lock); -} - -static int -nouveau_gpio_isr_add(struct nouveau_gpio *gpio, int idx, u8 tag, u8 line, - void (*handler)(void *, int), void *data) -{ - struct gpio_isr *isr; - unsigned long flags; - int ret; - - isr = kzalloc(sizeof(*isr), GFP_KERNEL); - if (!isr) - return -ENOMEM; - - ret = nouveau_gpio_find(gpio, idx, tag, line, &isr->func); - if (ret) { - kfree(isr); - return ret; - } - - INIT_WORK(&isr->work, nouveau_gpio_isr_bh); - isr->gpio = gpio; - isr->handler = handler; - isr->data = data; - isr->idx = idx; - - spin_lock_irqsave(&gpio->lock, flags); - list_add(&isr->head, &gpio->isr); - spin_unlock_irqrestore(&gpio->lock, flags); - return 0; -} - -static void -nouveau_gpio_isr_del(struct nouveau_gpio *gpio, int idx, u8 tag, u8 line, - void (*handler)(void *, int), void *data) +void +_nouveau_gpio_dtor(struct nouveau_object *object) { - struct gpio_isr *isr, *tmp; - struct dcb_gpio_func func; - unsigned long flags; - LIST_HEAD(tofree); - int ret; - - ret = nouveau_gpio_find(gpio, idx, tag, line, &func); - if (ret == 0) { - spin_lock_irqsave(&gpio->lock, flags); - list_for_each_entry_safe(isr, tmp, &gpio->isr, head) { - if (memcmp(&isr->func, &func, sizeof(func)) || - isr->idx != idx || - isr->handler != handler || isr->data != data) - continue; - list_move_tail(&isr->head, &tofree); - } - spin_unlock_irqrestore(&gpio->lock, flags); - - list_for_each_entry_safe(isr, tmp, &tofree, head) { - flush_work(&isr->work); - kfree(isr); - } - } + struct nouveau_gpio *gpio = (void *)object; + nouveau_event_destroy(&gpio->events); + nouveau_subdev_destroy(&gpio->base); } int nouveau_gpio_create_(struct nouveau_object *parent, struct nouveau_object *engine, - struct nouveau_oclass *oclass, int length, void **pobject) + struct nouveau_oclass *oclass, int lines, + int length, void **pobject) { struct nouveau_gpio *gpio; int ret; @@ -241,15 +125,13 @@ nouveau_gpio_create_(struct nouveau_object *parent, if (ret) return ret; + ret = nouveau_event_create(lines, &gpio->events); + if (ret) + return ret; + gpio->find = nouveau_gpio_find; gpio->set = nouveau_gpio_set; gpio->get = nouveau_gpio_get; - gpio->irq = nouveau_gpio_irq; - gpio->isr_run = nouveau_gpio_isr_run; - gpio->isr_add = nouveau_gpio_isr_add; - gpio->isr_del = nouveau_gpio_isr_del; - INIT_LIST_HEAD(&gpio->isr); - spin_lock_init(&gpio->lock); return 0; } |