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-rw-r--r--drivers/gpio/gpio-dwapb.c48
1 files changed, 32 insertions, 16 deletions
diff --git a/drivers/gpio/gpio-dwapb.c b/drivers/gpio/gpio-dwapb.c
index faac594287b3..803e1d1f4b5a 100644
--- a/drivers/gpio/gpio-dwapb.c
+++ b/drivers/gpio/gpio-dwapb.c
@@ -647,6 +647,36 @@ static int dwapb_get_reset(struct dwapb_gpio *gpio)
return devm_add_action_or_reset(gpio->dev, dwapb_assert_reset, gpio);
}
+static void dwapb_disable_clks(void *data)
+{
+ struct dwapb_gpio *gpio = data;
+
+ clk_bulk_disable_unprepare(DWAPB_NR_CLOCKS, gpio->clks);
+}
+
+static int dwapb_get_clks(struct dwapb_gpio *gpio)
+{
+ int err;
+
+ /* Optional bus and debounce clocks */
+ gpio->clks[0].id = "bus";
+ gpio->clks[1].id = "db";
+ err = devm_clk_bulk_get_optional(gpio->dev, DWAPB_NR_CLOCKS,
+ gpio->clks);
+ if (err) {
+ dev_err(gpio->dev, "Cannot get APB/Debounce clocks\n");
+ return err;
+ }
+
+ err = clk_bulk_prepare_enable(DWAPB_NR_CLOCKS, gpio->clks);
+ if (err) {
+ dev_err(gpio->dev, "Cannot enable APB/Debounce clocks\n");
+ return err;
+ }
+
+ return devm_add_action_or_reset(gpio->dev, dwapb_disable_clks, gpio);
+}
+
static const struct of_device_id dwapb_of_match[] = {
{ .compatible = "snps,dw-apb-gpio", .data = (void *)0},
{ .compatible = "apm,xgene-gpio-v2", .data = (void *)GPIO_REG_OFFSET_V2},
@@ -699,21 +729,9 @@ static int dwapb_gpio_probe(struct platform_device *pdev)
if (IS_ERR(gpio->regs))
return PTR_ERR(gpio->regs);
- /* Optional bus and debounce clocks */
- gpio->clks[0].id = "bus";
- gpio->clks[1].id = "db";
- err = devm_clk_bulk_get_optional(&pdev->dev, DWAPB_NR_CLOCKS,
- gpio->clks);
- if (err) {
- dev_err(&pdev->dev, "Cannot get APB/Debounce clocks\n");
- return err;
- }
-
- err = clk_bulk_prepare_enable(DWAPB_NR_CLOCKS, gpio->clks);
- if (err) {
- dev_err(&pdev->dev, "Cannot enable APB/Debounce clocks\n");
+ err = dwapb_get_clks(gpio);
+ if (err)
return err;
- }
gpio->flags = (uintptr_t)device_get_match_data(dev);
@@ -728,7 +746,6 @@ static int dwapb_gpio_probe(struct platform_device *pdev)
out_unregister:
dwapb_gpio_unregister(gpio);
- clk_bulk_disable_unprepare(DWAPB_NR_CLOCKS, gpio->clks);
return err;
}
@@ -738,7 +755,6 @@ static int dwapb_gpio_remove(struct platform_device *pdev)
struct dwapb_gpio *gpio = platform_get_drvdata(pdev);
dwapb_gpio_unregister(gpio);
- clk_bulk_disable_unprepare(DWAPB_NR_CLOCKS, gpio->clks);
return 0;
}