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 <andriy.shevchenko@xxxxxxxxxxxxxxx>
---
drivers/pinctrl/nuvoton/pinctrl-npcm7xx.c | 142 ++++++++++------------
1 file changed, 62 insertions(+), 80 deletions(-)
diff --git a/drivers/pinctrl/nuvoton/pinctrl-npcm7xx.c b/drivers/pinctrl/nuvoton/pinctrl-npcm7xx.c
index 9557fac5d11c..90a184a28ae7 100644
--- a/drivers/pinctrl/nuvoton/pinctrl-npcm7xx.c
+++ b/drivers/pinctrl/nuvoton/pinctrl-npcm7xx.c
@@ -17,6 +17,7 @@
#include <linux/pinctrl/pinctrl.h>
#include <linux/pinctrl/pinmux.h>
#include <linux/platform_device.h>
+#include <linux/property.h>
#include <linux/regmap.h>
/* 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.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;
+ pctrl->gpio_bank[id].gc.fwnode = child;
+ id++;
+ }
+
pctrl->bank_num = id;
return ret;
}
--
2.35.1
