From 0173ce55e50800a1a59dddcb972fe459cff0fee4 Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Fri, 1 Apr 2022 13:35:59 +0300 Subject: pinctrl: npcm7xx: Switch to use for_each_gpiochip_node() helper Switch the code to use for_each_gpiochip_node() helper. While at it, in order to avoid additional churn in the future, do the following: - use a temporary variable for struct device pointer to shorten a few lines - get rid of a temporary variable for vIRQ number, assign it directly - switch to fwnode APIs where it makes sense Signed-off-by: Andy Shevchenko --- drivers/pinctrl/nuvoton/pinctrl-npcm7xx.c | 142 +++++++++++++----------------- 1 file changed, 62 insertions(+), 80 deletions(-) (limited to 'drivers/pinctrl/nuvoton') diff --git a/drivers/pinctrl/nuvoton/pinctrl-npcm7xx.c b/drivers/pinctrl/nuvoton/pinctrl-npcm7xx.c index 9557fac5d11c..3cf0f8a43c37 100644 --- a/drivers/pinctrl/nuvoton/pinctrl-npcm7xx.c +++ b/drivers/pinctrl/nuvoton/pinctrl-npcm7xx.c @@ -17,6 +17,7 @@ #include #include #include +#include #include /* GCR registers */ @@ -1862,88 +1863,69 @@ static int npcm7xx_gpio_of(struct npcm7xx_pinctrl *pctrl) { int ret = -ENXIO; struct resource res; - int id = 0, irq; - struct device_node *np; - struct of_phandle_args pinspec; - - for_each_available_child_of_node(pctrl->dev->of_node, np) - if (of_find_property(np, "gpio-controller", NULL)) { - ret = of_address_to_resource(np, 0, &res); - if (ret < 0) { - dev_err(pctrl->dev, - "Resource fail for GPIO bank %u\n", id); - return ret; - } - - pctrl->gpio_bank[id].base = - ioremap(res.start, resource_size(&res)); - - irq = irq_of_parse_and_map(np, 0); - if (irq < 0) { - dev_err(pctrl->dev, - "No IRQ for GPIO bank %u\n", id); - ret = irq; - return ret; - } - - ret = bgpio_init(&pctrl->gpio_bank[id].gc, - pctrl->dev, 4, - pctrl->gpio_bank[id].base + - NPCM7XX_GP_N_DIN, - pctrl->gpio_bank[id].base + - NPCM7XX_GP_N_DOUT, - NULL, - NULL, - pctrl->gpio_bank[id].base + - NPCM7XX_GP_N_IEM, - BGPIOF_READ_OUTPUT_REG_SET); - if (ret) { - dev_err(pctrl->dev, "bgpio_init() failed\n"); - return ret; - } - - ret = of_parse_phandle_with_fixed_args(np, - "gpio-ranges", 3, - 0, &pinspec); - if (ret < 0) { - dev_err(pctrl->dev, - "gpio-ranges fail for GPIO bank %u\n", - id); - return ret; - } - - pctrl->gpio_bank[id].irq = irq; - pctrl->gpio_bank[id].irq_chip = npcmgpio_irqchip; - pctrl->gpio_bank[id].gc.parent = pctrl->dev; - pctrl->gpio_bank[id].irqbase = - id * NPCM7XX_GPIO_PER_BANK; - pctrl->gpio_bank[id].pinctrl_id = pinspec.args[0]; - pctrl->gpio_bank[id].gc.base = pinspec.args[1]; - pctrl->gpio_bank[id].gc.ngpio = pinspec.args[2]; - pctrl->gpio_bank[id].gc.owner = THIS_MODULE; - pctrl->gpio_bank[id].gc.label = - devm_kasprintf(pctrl->dev, GFP_KERNEL, "%pOF", - np); - if (pctrl->gpio_bank[id].gc.label == NULL) - return -ENOMEM; - - pctrl->gpio_bank[id].gc.dbg_show = npcmgpio_dbg_show; - pctrl->gpio_bank[id].direction_input = - pctrl->gpio_bank[id].gc.direction_input; - pctrl->gpio_bank[id].gc.direction_input = - npcmgpio_direction_input; - pctrl->gpio_bank[id].direction_output = - pctrl->gpio_bank[id].gc.direction_output; - pctrl->gpio_bank[id].gc.direction_output = - npcmgpio_direction_output; - pctrl->gpio_bank[id].request = - pctrl->gpio_bank[id].gc.request; - pctrl->gpio_bank[id].gc.request = npcmgpio_gpio_request; - pctrl->gpio_bank[id].gc.free = npcmgpio_gpio_free; - pctrl->gpio_bank[id].gc.of_node = np; - id++; + struct device *dev = pctrl->dev; + struct fwnode_reference_args args; + struct fwnode_handle *child; + int id = 0; + + for_each_gpiochip_node(dev, child) { + struct device_node *np = to_of_node(child); + + ret = of_address_to_resource(np, 0, &res); + if (ret < 0) { + dev_err(dev, "Resource fail for GPIO bank %u\n", id); + return ret; + } + + pctrl->gpio_bank[id].base = ioremap(res.start, resource_size(&res)); + + ret = bgpio_init(&pctrl->gpio_bank[id].gc, dev, 4, + pctrl->gpio_bank[id].base + NPCM7XX_GP_N_DIN, + pctrl->gpio_bank[id].base + NPCM7XX_GP_N_DOUT, + NULL, + NULL, + pctrl->gpio_bank[id].base + NPCM7XX_GP_N_IEM, + BGPIOF_READ_OUTPUT_REG_SET); + if (ret) { + dev_err(dev, "bgpio_init() failed\n"); + return ret; } + ret = fwnode_property_get_reference_args(child, "gpio-ranges", NULL, 3, 0, &args); + if (ret < 0) { + dev_err(dev, "gpio-ranges fail for GPIO bank %u\n", id); + return ret; + } + + ret = irq_of_parse_and_map(np, 0); + if (ret < 0) { + dev_err(dev, "No IRQ for GPIO bank %u\n", id); + return ret; + } + pctrl->gpio_bank[id].irq = ret; + pctrl->gpio_bank[id].irq_chip = npcmgpio_irqchip; + pctrl->gpio_bank[id].irqbase = id * NPCM7XX_GPIO_PER_BANK; + pctrl->gpio_bank[id].pinctrl_id = args.args[0]; + pctrl->gpio_bank[id].gc.base = args.args[1]; + pctrl->gpio_bank[id].gc.ngpio = args.args[2]; + pctrl->gpio_bank[id].gc.owner = THIS_MODULE; + pctrl->gpio_bank[id].gc.parent = dev; + pctrl->gpio_bank[id].gc.fwnode = child; + pctrl->gpio_bank[id].gc.label = devm_kasprintf(dev, GFP_KERNEL, "%pfw", child); + if (pctrl->gpio_bank[id].gc.label == NULL) + return -ENOMEM; + + pctrl->gpio_bank[id].gc.dbg_show = npcmgpio_dbg_show; + pctrl->gpio_bank[id].direction_input = pctrl->gpio_bank[id].gc.direction_input; + pctrl->gpio_bank[id].gc.direction_input = npcmgpio_direction_input; + pctrl->gpio_bank[id].direction_output = pctrl->gpio_bank[id].gc.direction_output; + pctrl->gpio_bank[id].gc.direction_output = npcmgpio_direction_output; + pctrl->gpio_bank[id].request = pctrl->gpio_bank[id].gc.request; + pctrl->gpio_bank[id].gc.request = npcmgpio_gpio_request; + pctrl->gpio_bank[id].gc.free = npcmgpio_gpio_free; + id++; + } + pctrl->bank_num = id; return ret; } -- cgit v1.2.3