static int pl061_resume(struct device *dev) { struct pl061_gpio *chip = dev_get_drvdata(dev); int offset; for (offset = 0; offset < PL061_GPIO_NR; offset++) { if (chip->csave_regs.gpio_dir & (1 << offset)) pl061_direction_output(&chip->gc, offset, chip->csave_regs.gpio_data & (1 << offset)); else pl061_direction_input(&chip->gc, offset); } writeb(chip->csave_regs.gpio_is, chip->base + GPIOIS); writeb(chip->csave_regs.gpio_ibe, chip->base + GPIOIBE); writeb(chip->csave_regs.gpio_iev, chip->base + GPIOIEV); writeb(chip->csave_regs.gpio_ie, chip->base + GPIOIE); return 0; }
static int pl061_probe(struct amba_device *adev, const struct amba_id *id) { struct device *dev = &adev->dev; struct pl061_platform_data *pdata = dev_get_platdata(dev); struct pl061_gpio *chip; int ret, irq, i, irq_base; chip = devm_kzalloc(dev, sizeof(*chip), GFP_KERNEL); if (chip == NULL) return -ENOMEM; if (pdata) { chip->gc.base = pdata->gpio_base; irq_base = pdata->irq_base; if (irq_base <= 0) { dev_err(&adev->dev, "invalid IRQ base in pdata\n"); return -ENODEV; } } else { chip->gc.base = -1; irq_base = 0; } chip->base = devm_ioremap_resource(dev, &adev->res); if (IS_ERR(chip->base)) return PTR_ERR(chip->base); spin_lock_init(&chip->lock); chip->gc.request = pl061_gpio_request; chip->gc.free = pl061_gpio_free; chip->gc.direction_input = pl061_direction_input; chip->gc.direction_output = pl061_direction_output; chip->gc.get = pl061_get_value; chip->gc.set = pl061_set_value; chip->gc.to_irq = pl061_to_irq; chip->gc.ngpio = PL061_GPIO_NR; chip->gc.label = dev_name(dev); chip->gc.dev = dev; chip->gc.owner = THIS_MODULE; ret = gpiochip_add(&chip->gc); if (ret) return ret; /* * irq_chip support */ writeb(0, chip->base + GPIOIE); /* disable irqs */ irq = adev->irq[0]; if (irq < 0) { dev_err(&adev->dev, "invalid IRQ\n"); return -ENODEV; } irq_set_chained_handler(irq, pl061_irq_handler); irq_set_handler_data(irq, chip); chip->domain = irq_domain_add_simple(adev->dev.of_node, PL061_GPIO_NR, irq_base, &pl061_domain_ops, chip); if (!chip->domain) { dev_err(&adev->dev, "no irq domain\n"); return -ENODEV; } for (i = 0; i < PL061_GPIO_NR; i++) { if (pdata) { if (pdata->directions & (1 << i)) pl061_direction_output(&chip->gc, i, pdata->values & (1 << i)); else pl061_direction_input(&chip->gc, i); } } amba_set_drvdata(adev, chip); dev_info(&adev->dev, "PL061 GPIO chip @%pa registered\n", &adev->res.start); return 0; }
static int pl061_probe(struct amba_device *adev, const struct amba_id *id) { struct device *dev = &adev->dev; struct pl061_platform_data *pdata = dev->platform_data; struct pl061_gpio *chip; int ret, irq, i, irq_base; struct device_node *np = dev->of_node; chip = devm_kzalloc(dev, sizeof(*chip), GFP_KERNEL); if (chip == NULL) return -ENOMEM; if (pdata) { chip->gc.base = pdata->gpio_base; irq_base = pdata->irq_base; if (irq_base <= 0) return -ENODEV; } else { chip->gc.base = pl061_parse_gpio_base(dev); irq_base = 0; } if (!devm_request_mem_region(dev, adev->res.start, resource_size(&adev->res), "pl061")) return -EBUSY; chip->base = devm_ioremap(dev, adev->res.start, resource_size(&adev->res)); if (!chip->base) return -ENOMEM; spin_lock_init(&chip->lock); if (of_get_property(np, "gpio,hwspinlock", NULL)) { gpio_hwlock = hwspin_lock_request_specific(GPIO_HWLOCK_ID); if (gpio_hwlock == NULL) return -EBUSY; } /* Hook the request()/free() for pinctrl operation */ if (of_get_property(dev->of_node, "gpio-ranges", NULL)) { chip->gc.request = pl061_gpio_request; chip->gc.free = pl061_gpio_free; } chip->gc.direction_input = pl061_direction_input; chip->gc.direction_output = pl061_direction_output; chip->gc.get = pl061_get_value; chip->gc.set = pl061_set_value; chip->gc.to_irq = pl061_to_irq; chip->gc.ngpio = PL061_GPIO_NR; chip->gc.label = dev_name(dev); chip->gc.dev = dev; chip->gc.owner = THIS_MODULE; ret = gpiochip_add(&chip->gc); if (ret) return ret; /* * irq_chip support */ writeb(0, chip->base + GPIOIE); /* disable irqs */ irq = adev->irq[0]; if (irq < 0) return -ENODEV; irq_set_chained_handler(irq, pl061_irq_handler); irq_set_handler_data(irq, chip); chip->domain = irq_domain_add_simple(adev->dev.of_node, PL061_GPIO_NR, irq_base, &pl061_domain_ops, chip); if (!chip->domain) return -ENODEV; for (i = 0; i < PL061_GPIO_NR; i++) { if (pdata) { if (pdata->directions & (1 << i)) pl061_direction_output(&chip->gc, i, pdata->values & (1 << i)); else pl061_direction_input(&chip->gc, i); } } amba_set_drvdata(adev, chip); return 0; }