@@ -438,9 +438,9 @@ static void nmk_prcm_altcx_set_mode(struct nmk_pinctrl *npct,
* - Any spurious wake up event during switch sequence to be ignored and
* cleared
*/
-static void nmk_gpio_glitch_slpm_init(unsigned int *slpm)
+static int nmk_gpio_glitch_slpm_init(unsigned int *slpm)
{
- int i;
+ int i, j, ret;
for (i = 0; i < NMK_MAX_BANKS; i++) {
struct nmk_gpio_chip *chip = nmk_gpio_chips[i];
@@ -449,11 +449,21 @@ static void nmk_gpio_glitch_slpm_init(unsigned int *slpm)
if (!chip)
break;
- clk_enable(chip->clk);
+ ret = clk_enable(chip->clk);
+ if (ret) {
+ for (j = 0; j < i; j++) {
+ chip = nmk_gpio_chips[j];
+ clk_disable(chip->clk);
+ }
+ return ret;
+ }
+
slpm[i] = readl(chip->addr + NMK_GPIO_SLPC);
writel(temp, chip->addr + NMK_GPIO_SLPC);
}
+
+ return 0;
}
static void nmk_gpio_glitch_slpm_restore(unsigned int *slpm)
@@ -923,7 +933,9 @@ static int nmk_pmx_set(struct pinctrl_dev *pctldev, unsigned int function,
slpm[nmk_chip->bank] &= ~BIT(bit);
}
- nmk_gpio_glitch_slpm_init(slpm);
+ ret = nmk_gpio_glitch_slpm_init(slpm);
+ if (ret)
+ goto out_pre_slpm_init;
}
for (i = 0; i < g->grp.npins; i++) {
@@ -940,7 +952,10 @@ static int nmk_pmx_set(struct pinctrl_dev *pctldev, unsigned int function,
dev_dbg(npct->dev, "setting pin %d to altsetting %d\n",
g->grp.pins[i], g->altsetting);
- clk_enable(nmk_chip->clk);
+ ret = clk_enable(nmk_chip->clk);
+ if (ret)
+ goto out_glitch;
+
/*
* If the pin is switching to altfunc, and there was an
* interrupt installed on it which has been lazy disabled,
@@ -988,6 +1003,7 @@ static int nmk_gpio_request_enable(struct pinctrl_dev *pctldev,
struct nmk_gpio_chip *nmk_chip;
struct gpio_chip *chip;
unsigned int bit;
+ int ret;
if (!range) {
dev_err(npct->dev, "invalid range\n");
@@ -1004,7 +1020,9 @@ static int nmk_gpio_request_enable(struct pinctrl_dev *pctldev,
find_nmk_gpio_from_pin(pin, &bit);
- clk_enable(nmk_chip->clk);
+ ret = clk_enable(nmk_chip->clk);
+ if (ret)
+ return ret;
/* There is no glitch when converting any pin to GPIO */
__nmk_gpio_set_mode(nmk_chip, bit, NMK_GPIO_ALT_GPIO);
clk_disable(nmk_chip->clk);
@@ -1058,6 +1076,7 @@ static int nmk_pin_config_set(struct pinctrl_dev *pctldev, unsigned int pin,
unsigned long cfg;
int pull, slpm, output, val, i;
bool lowemi, gpiomode, sleep;
+ int ret;
nmk_chip = find_nmk_gpio_from_pin(pin, &bit);
if (!nmk_chip) {
@@ -1116,7 +1135,9 @@ static int nmk_pin_config_set(struct pinctrl_dev *pctldev, unsigned int pin,
output ? (val ? "high" : "low") : "",
lowemi ? "on" : "off");
- clk_enable(nmk_chip->clk);
+ ret = clk_enable(nmk_chip->clk);
+ if (ret)
+ return ret;
if (gpiomode)
/* No glitch when going to GPIO mode */
__nmk_gpio_set_mode(nmk_chip, bit, NMK_GPIO_ALT_GPIO);