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path: root/drivers/pinctrl/pinctrl-nomadik.c
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Diffstat (limited to 'drivers/pinctrl/pinctrl-nomadik.c')
-rw-r--r--drivers/pinctrl/pinctrl-nomadik.c11
1 files changed, 10 insertions, 1 deletions
diff --git a/drivers/pinctrl/pinctrl-nomadik.c b/drivers/pinctrl/pinctrl-nomadik.c
index ef66f98e9202..015b093287a4 100644
--- a/drivers/pinctrl/pinctrl-nomadik.c
+++ b/drivers/pinctrl/pinctrl-nomadik.c
@@ -259,6 +259,9 @@ static void nmk_prcm_altcx_set_mode(struct nmk_pinctrl *npct,
const struct prcm_gpiocr_altcx_pin_desc *pin_desc;
const u16 *gpiocr_regs;
+ if (!npct->prcm_base)
+ return;
+
if (alt_num > PRCM_IDX_GPIOCR_ALTC_MAX) {
dev_err(npct->dev, "PRCM GPIOCR: alternate-C%i is invalid\n",
alt_num);
@@ -682,6 +685,9 @@ static int nmk_prcm_gpiocr_get_mode(struct pinctrl_dev *pctldev, int gpio)
const struct prcm_gpiocr_altcx_pin_desc *pin_desc;
const u16 *gpiocr_regs;
+ if (!npct->prcm_base)
+ return NMK_GPIO_ALT_C;
+
for (i = 0; i < npct->soc->npins_altcx; i++) {
if (npct->soc->altcx_pins[i].pin == gpio)
break;
@@ -1887,9 +1893,12 @@ static int __devinit nmk_pinctrl_probe(struct platform_device *pdev)
"failed to ioremap PRCM registers\n");
return -ENOMEM;
}
- } else {
+ } else if (version == PINCTRL_NMK_STN8815) {
dev_info(&pdev->dev,
"No PRCM base, assume no ALT-Cx control is available\n");
+ } else {
+ dev_err(&pdev->dev, "missing PRCM base address\n");
+ return -EINVAL;
}
/*