[PATCH v3 0/7] gpio: rtd1625: minor cleanups and log improvements

[PATCH v3 0/7] gpio: rtd1625: minor cleanups and log improvements

[Yu-Chun Lin]

This series splits the previous cleanup patch into smaller, logical 
pieces and addresses the review comments from Andy Shevchenko.

Link: https://lore.kernel.org/lkml/anUcSPcJjJkLh0Z-@ashevche-desk.local/

Signed-off-by: Yu-Chun Lin <eleanor.lin@realtek.com>
---
Changes in v3:
Patch 1 & 2:
Split from patch 1 in v2.

Patch 3:
Add Reviewed-by tag from Andy.

Patch 4 & 5:
Split from patch 3 in v2.

Patch 6:
Add Reviewed-by tag from Andy.

Patch 7:
Add Reviewed-by tag from Andy.

Link to v2: https://lore.kernel.org/lkml/20260814025657.1400452-1-eleanor.lin@realtek.com/

---
Yu-Chun Lin (7):
      gpio: rtd1625: Remove unnecessary blank line
      gpio: rtd1625: Drop unneeded initializations
      gpio: rtd1625: Fix variable type for regmap_read()
      gpio: rtd1625: Narrow 'i' variable scope in loop
      gpio: rtd1625: Narrow 'hwirq' variable scope in loop
      gpio: rtd1625: Replace pr_err_ratelimited() with dev_err_ratelimited()
      gpio: rtd1625: Use IRQ_TYPE_DEFAULT macro

 drivers/gpio/gpio-rtd1625.c | 26 ++++++++++++++------------
 1 file changed, 14 insertions(+), 12 deletions(-)
---
base-commit: 408866669ce01b8f2111afdea2c13d15a8960bff
change-id: 20260815-gpio-cleanup-caf002873da1

Best regards,
--  
Yu-Chun Lin <eleanor.lin@realtek.com>

[PATCH v3 1/7] gpio: rtd1625: Remove unnecessary blank line

[Yu-Chun Lin]

Remove an unnecessary blank line in rtd1625_gpio_setup_irq() to clean up
the coding style.

Link: https://lore.kernel.org/lkml/anUcSPcJjJkLh0Z-@ashevche-desk.local/
Suggested-by: Andy Shevchenko <andriy.shevchenko@intel.com>
Signed-off-by: Yu-Chun Lin <eleanor.lin@realtek.com>
---
 drivers/gpio/gpio-rtd1625.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/gpio/gpio-rtd1625.c b/drivers/gpio/gpio-rtd1625.c
index 483e44cf5abc..469d4e94e4c7 100644
--- a/drivers/gpio/gpio-rtd1625.c
+++ b/drivers/gpio/gpio-rtd1625.c
@@ -486,7 +486,6 @@ static int rtd1625_gpio_setup_irq(struct platform_device *pdev, struct rtd1625_g
 		return irq;
 
 	num_irqs = (data->info->irq_type_support & IRQ_TYPE_LEVEL_MASK) ? 3 : 2;
-
 	for (unsigned int i = 0; i < num_irqs; i++) {
 		irq = platform_get_irq(pdev, i);
 		if (irq < 0)

-- 
2.50.1

[PATCH v3 2/7] gpio: rtd1625: Drop unneeded initializations

[Yu-Chun Lin]

Drop unneeded assignments. While at it, place correctly the comment to be
just above the referenced code.

Link: https://lore.kernel.org/lkml/anUcSPcJjJkLh0Z-@ashevche-desk.local/
Suggested-by: Andy Shevchenko <andriy.shevchenko@intel.com>
Signed-off-by: Yu-Chun Lin <eleanor.lin@realtek.com>
---
 drivers/gpio/gpio-rtd1625.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpio/gpio-rtd1625.c b/drivers/gpio/gpio-rtd1625.c
index 469d4e94e4c7..910004c423df 100644
--- a/drivers/gpio/gpio-rtd1625.c
+++ b/drivers/gpio/gpio-rtd1625.c
@@ -107,10 +107,10 @@ static int rtd1625_reg_mask_xlate(struct gpio_regmap *gpio, enum gpio_regmap_ope
 				  unsigned int base, unsigned int offset, unsigned int *reg,
 				  unsigned int *mask)
 {
-	/* Each GPIO has its own dedicated 32-bit register */
 	struct rtd1625_gpio *data = gpio_regmap_get_drvdata(gpio);
-	int val = 0, ret = 0;
+	/* Each GPIO has its own dedicated 32-bit register */
 	*reg = base + offset * 4;
+	int val, ret;
 
 	switch (op) {
 	case GPIO_REGMAP_SET_OP:

-- 
2.50.1

[PATCH v3 3/7] gpio: rtd1625: Fix variable type for regmap_read()

[Yu-Chun Lin]

Change the type of 'val' from int to unsigned int. This properly matches
the expected parameter type of regmap_read().

Reviewed-by: Andy Shevchenko <andriy.shevchenko@intel.com>
Signed-off-by: Yu-Chun Lin <eleanor.lin@realtek.com>
---
 drivers/gpio/gpio-rtd1625.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpio/gpio-rtd1625.c b/drivers/gpio/gpio-rtd1625.c
index 910004c423df..0308d7a052e7 100644
--- a/drivers/gpio/gpio-rtd1625.c
+++ b/drivers/gpio/gpio-rtd1625.c
@@ -110,7 +110,8 @@ static int rtd1625_reg_mask_xlate(struct gpio_regmap *gpio, enum gpio_regmap_ope
 	struct rtd1625_gpio *data = gpio_regmap_get_drvdata(gpio);
 	/* Each GPIO has its own dedicated 32-bit register */
 	*reg = base + offset * 4;
-	int val, ret;
+	unsigned int val;
+	int ret;
 
 	switch (op) {
 	case GPIO_REGMAP_SET_OP:

-- 
2.50.1

[PATCH v3 4/7] gpio: rtd1625: Narrow 'i' variable scope in loop

[Yu-Chun Lin]

Declare 'i' inside the for-loop header to reduce variable visibility.

Link: https://lore.kernel.org/lkml/anUcSPcJjJkLh0Z-@ashevche-desk.local/
Suggested-by: Andy Shevchenko <andriy.shevchenko@intel.com>
Signed-off-by: Yu-Chun Lin <eleanor.lin@realtek.com>
---
 drivers/gpio/gpio-rtd1625.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpio/gpio-rtd1625.c b/drivers/gpio/gpio-rtd1625.c
index 0308d7a052e7..2652bc6cb523 100644
--- a/drivers/gpio/gpio-rtd1625.c
+++ b/drivers/gpio/gpio-rtd1625.c
@@ -224,7 +224,7 @@ static void rtd1625_gpio_irq_handle(struct irq_desc *desc)
 	struct irq_chip *chip = irq_desc_get_chip(desc);
 	unsigned int irq = irq_desc_get_irq(desc);
 	struct irq_domain *domain = data->domain;
-	unsigned int reg_offset, i, j, val;
+	unsigned int reg_offset, j, val;
 	irq_hw_number_t hwirq;
 	unsigned long status;
 	u32 irq_type;
@@ -241,7 +241,7 @@ static void rtd1625_gpio_irq_handle(struct irq_desc *desc)
 
 	chained_irq_enter(chip, desc);
 
-	for (i = 0; i < data->info->num_gpios; i += 32) {
+	for (unsigned int i = 0; i < data->info->num_gpios; i += 32) {
 		reg_offset = get_reg_offset(data, i);
 		ret = regmap_read(data->regmap, reg_offset, &val);
 		if (ret) {

-- 
2.50.1

[PATCH v3 5/7] gpio: rtd1625: Narrow 'hwirq' variable scope in loop

[Yu-Chun Lin]

Declare 'hwirq' within the inner block where it's used to reduce variable
visibility.

Link: https://lore.kernel.org/lkml/anUcSPcJjJkLh0Z-@ashevche-desk.local/
Suggested-by: Andy Shevchenko <andriy.shevchenko@intel.com>
Signed-off-by: Yu-Chun Lin <eleanor.lin@realtek.com>
---
 drivers/gpio/gpio-rtd1625.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpio/gpio-rtd1625.c b/drivers/gpio/gpio-rtd1625.c
index 2652bc6cb523..8f584287c2e6 100644
--- a/drivers/gpio/gpio-rtd1625.c
+++ b/drivers/gpio/gpio-rtd1625.c
@@ -225,7 +225,6 @@ static void rtd1625_gpio_irq_handle(struct irq_desc *desc)
 	unsigned int irq = irq_desc_get_irq(desc);
 	struct irq_domain *domain = data->domain;
 	unsigned int reg_offset, j, val;
-	irq_hw_number_t hwirq;
 	unsigned long status;
 	u32 irq_type;
 	int ret;
@@ -267,7 +266,8 @@ static void rtd1625_gpio_irq_handle(struct irq_desc *desc)
 		}
 
 		for_each_set_bit(j, &status, 32) {
-			hwirq = i + j;
+			irq_hw_number_t hwirq = i + j;
+
 			irq_type = irq_get_trigger_type(irq_find_mapping(domain, hwirq));
 
 			/*

-- 
2.50.1

[PATCH v3 6/7] gpio: rtd1625: Replace pr_err_ratelimited() with dev_err_ratelimited()

[Yu-Chun Lin]

Using dev_* logging macros is preferred over pr_* in device drivers as it
provides proper device context in the kernel log output.

Link: https://lore.kernel.org/lkml/anUcSPcJjJkLh0Z-@ashevche-desk.local/
Suggested-by: Andy Shevchenko <andriy.shevchenko@intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@intel.com>
Signed-off-by: Yu-Chun Lin <eleanor.lin@realtek.com>
---
 drivers/gpio/gpio-rtd1625.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/drivers/gpio/gpio-rtd1625.c b/drivers/gpio/gpio-rtd1625.c
index 8f584287c2e6..613462614210 100644
--- a/drivers/gpio/gpio-rtd1625.c
+++ b/drivers/gpio/gpio-rtd1625.c
@@ -221,6 +221,7 @@ static void rtd1625_gpio_irq_handle(struct irq_desc *desc)
 {
 	unsigned int (*get_reg_offset)(struct rtd1625_gpio *gpio, unsigned int offset);
 	struct rtd1625_gpio *data = irq_desc_get_handler_data(desc);
+	struct device *dev = regmap_get_device(data->regmap);
 	struct irq_chip *chip = irq_desc_get_chip(desc);
 	unsigned int irq = irq_desc_get_irq(desc);
 	struct irq_domain *domain = data->domain;
@@ -244,7 +245,8 @@ static void rtd1625_gpio_irq_handle(struct irq_desc *desc)
 		reg_offset = get_reg_offset(data, i);
 		ret = regmap_read(data->regmap, reg_offset, &val);
 		if (ret) {
-			pr_err_ratelimited("Failed to read IRQ status for GPIO %u: %d\n", i, ret);
+			dev_err_ratelimited(dev, "Failed to read IRQ status for GPIO %u: %d\n",
+					    i, ret);
 			continue;
 		}
 
@@ -261,8 +263,9 @@ static void rtd1625_gpio_irq_handle(struct irq_desc *desc)
 		if (irq != data->irqs[RTD1625_IRQ_LEVEL]) {
 			ret = regmap_write(data->regmap, reg_offset, status);
 			if (ret)
-				pr_err_ratelimited("Failed to clear edge IRQ for GPIO %u: %d\n",
-						   i, ret);
+				dev_err_ratelimited(dev,
+						    "Failed to clear edge IRQ for GPIO %u: %d\n",
+						    i, ret);
 		}
 
 		for_each_set_bit(j, &status, 32) {

-- 
2.50.1

[PATCH v3 7/7] gpio: rtd1625: Use IRQ_TYPE_DEFAULT macro

[Yu-Chun Lin]

Use the standard IRQ_TYPE_DEFAULT macro instead of explicitly listing all
supported edge and level IRQ type flags.

Link: https://lore.kernel.org/lkml/anUcSPcJjJkLh0Z-@ashevche-desk.local/
Suggested-by: Andy Shevchenko <andriy.shevchenko@intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@intel.com>
Signed-off-by: Yu-Chun Lin <eleanor.lin@realtek.com>
---
 drivers/gpio/gpio-rtd1625.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/gpio/gpio-rtd1625.c b/drivers/gpio/gpio-rtd1625.c
index 613462614210..bebd1b8ede48 100644
--- a/drivers/gpio/gpio-rtd1625.c
+++ b/drivers/gpio/gpio-rtd1625.c
@@ -615,8 +615,7 @@ static const struct rtd1625_gpio_info rtd1625_iso_gpio_info = {
 
 static const struct rtd1625_gpio_info rtd1625_isom_gpio_info = {
 	.num_gpios        = 4,
-	.irq_type_support = IRQ_TYPE_EDGE_BOTH | IRQ_TYPE_LEVEL_LOW |
-			    IRQ_TYPE_LEVEL_HIGH,
+	.irq_type_support = IRQ_TYPE_DEFAULT,
 	.base_offset      = 0x20,
 	.gpa_offset       = 0x00,
 	.gpda_offset      = 0x04,

-- 
2.50.1

Re: [PATCH v3 1/7] gpio: rtd1625: Remove unnecessary blank line

[Andy Shevchenko]

On Sun, Aug 16, 2026 at 11:17:30PM +0800, Yu-Chun Lin wrote:
> Remove an unnecessary blank line in rtd1625_gpio_setup_irq() to clean up
> the coding style.

Reviewed-by: Andy Shevchenko <andriy.shevchenko@intel.com>

-- 
With Best Regards,
Andy Shevchenko

Re: [PATCH v3 2/7] gpio: rtd1625: Drop unneeded initializations

[Andy Shevchenko]

On Sun, Aug 16, 2026 at 11:17:31PM +0800, Yu-Chun Lin wrote:
> Drop unneeded assignments. While at it, place correctly the comment to be
> just above the referenced code.

Reviewed-by: Andy Shevchenko <andriy.shevchenko@intel.com>

-- 
With Best Regards,
Andy Shevchenko

Re: [PATCH v3 4/7] gpio: rtd1625: Narrow 'i' variable scope in loop

[Andy Shevchenko]

On Sun, Aug 16, 2026 at 11:17:33PM +0800, Yu-Chun Lin wrote:
> Declare 'i' inside the for-loop header to reduce variable visibility.

Reviewed-by: Andy Shevchenko <andriy.shevchenko@intel.com>

-- 
With Best Regards,
Andy Shevchenko

Re: [PATCH v3 5/7] gpio: rtd1625: Narrow 'hwirq' variable scope in loop

[Andy Shevchenko]

On Sun, Aug 16, 2026 at 11:17:34PM +0800, Yu-Chun Lin wrote:
> Declare 'hwirq' within the inner block where it's used to reduce variable
> visibility.

Reviewed-by: Andy Shevchenko <andriy.shevchenko@intel.com>

-- 
With Best Regards,
Andy Shevchenko