Convert the driver to clk_bulk*() API.
Add check for the return value of clk_bulk_enable() to catch
the potential error.
Fixes: 05d8af449d93 ("pinctrl: stm32: Keep pinctrl block clock enabled when LEVEL IRQ requested")
Signed-off-by: Mingwei Zheng <zmw12306@xxxxxxxxx>
Signed-off-by: Jiasheng Jiang <jiashengjiangcool@xxxxxxxxx>
---
Changelog:
v3 -> v4:
1. Add initialization for pctl->clks.
2. Adjust alignment.
v2 -> v3:
1. Convert clk_disable_unprepare to clk_bulk_disable
and clk_bulk_unprepare.
v1 -> v2:
1. Move int ret declaration into if block.
---
drivers/pinctrl/stm32/pinctrl-stm32.c | 37 +++++++++++++++------------
1 file changed, 21 insertions(+), 16 deletions(-)
diff --git a/drivers/pinctrl/stm32/pinctrl-stm32.c b/drivers/pinctrl/stm32/pinctrl-stm32.c
index 5b7fa77c1184..427749d4f6a5 100644
--- a/drivers/pinctrl/stm32/pinctrl-stm32.c
+++ b/drivers/pinctrl/stm32/pinctrl-stm32.c
@@ -86,7 +86,6 @@ struct stm32_pinctrl_group {
struct stm32_gpio_bank {
void __iomem *base;
- struct clk *clk;
struct reset_control *rstc;
spinlock_t lock;
struct gpio_chip gpio_chip;
@@ -108,6 +107,7 @@ struct stm32_pinctrl {
unsigned ngroups;
const char **grp_names;
struct stm32_gpio_bank *banks;
+ struct clk_bulk_data *clks;
unsigned nbanks;
const struct stm32_pinctrl_match_data *match_data;
struct irq_domain *domain;
@@ -1308,7 +1308,7 @@ static int stm32_gpiolib_register_bank(struct stm32_pinctrl *pctl, struct fwnode
if (IS_ERR(bank->base))
return PTR_ERR(bank->base);
- err = clk_prepare_enable(bank->clk);
+ err = clk_prepare_enable(pctl->clks[pctl->nbanks].clk);
if (err) {
dev_err(dev, "failed to prepare_enable clk (%d)\n", err);
return err;
@@ -1397,7 +1397,7 @@ static int stm32_gpiolib_register_bank(struct stm32_pinctrl *pctl, struct fwnode
return 0;
err_clk:
- clk_disable_unprepare(bank->clk);
+ clk_disable_unprepare(pctl->clks[pctl->nbanks].clk);
return err;
}
@@ -1617,10 +1617,18 @@ int stm32_pctl_probe(struct platform_device *pdev)
return -EINVAL;
}
pctl->banks = devm_kcalloc(dev, banks, sizeof(*pctl->banks),
- GFP_KERNEL);
+ GFP_KERNEL);
if (!pctl->banks)
return -ENOMEM;
+ pctl->clks = devm_kcalloc(dev, banks, sizeof(*pctl->clks),
+ GFP_KERNEL);
+ if (!pctl->clks)
+ return -ENOMEM;
+
+ for (i = 0; i < banks; ++i)
+ pctl->clks[i].id = "";
+
i = 0;
for_each_gpiochip_node(dev, child) {
struct stm32_gpio_bank *bank = &pctl->banks[i];
@@ -1631,11 +1639,10 @@ int stm32_pctl_probe(struct platform_device *pdev)
fwnode_handle_put(child);
return -EPROBE_DEFER;
}
-
- bank->clk = of_clk_get_by_name(np, NULL);
- if (IS_ERR(bank->clk)) {
+ pctl->clks[i].clk = of_clk_get_by_name(np, NULL);
+ if (IS_ERR(pctl->clks[i].clk)) {
fwnode_handle_put(child);
- return dev_err_probe(dev, PTR_ERR(bank->clk),
+ return dev_err_probe(dev, PTR_ERR(pctl->clks[i].clk),
"failed to get clk\n");
}
i++;
@@ -1646,8 +1653,7 @@ int stm32_pctl_probe(struct platform_device *pdev)
if (ret) {
fwnode_handle_put(child);
- for (i = 0; i < pctl->nbanks; i++)
- clk_disable_unprepare(pctl->banks[i].clk);
+ clk_bulk_disable_unprepare(pctl->nbanks, pctl->clks);
return ret;
}
@@ -1726,10 +1732,8 @@ static int __maybe_unused stm32_pinctrl_restore_gpio_regs(
int __maybe_unused stm32_pinctrl_suspend(struct device *dev)
{
struct stm32_pinctrl *pctl = dev_get_drvdata(dev);
- int i;
- for (i = 0; i < pctl->nbanks; i++)
- clk_disable(pctl->banks[i].clk);
+ clk_bulk_disable(pctl->nbanks, pctl->clks);
return 0;
}
@@ -1738,10 +1742,11 @@ int __maybe_unused stm32_pinctrl_resume(struct device *dev)
{
struct stm32_pinctrl *pctl = dev_get_drvdata(dev);
struct stm32_pinctrl_group *g = pctl->groups;
- int i;
+ int i, ret;
- for (i = 0; i < pctl->nbanks; i++)
- clk_enable(pctl->banks[i].clk);
+ ret = clk_bulk_enable(pctl->nbanks, pctl->clks);
+ if (ret)
+ return ret;
for (i = 0; i < pctl->ngroups; i++, g++)
stm32_pinctrl_restore_gpio_regs(pctl, g->pin);
