SCS3SEL and KBCCSEL use inverted logic: Whereas in other fields 0
selects the GPIO function and 1 selects the special function, in these
two fields, 0 selects the special function and 1 selects the GPIO
function.
Adjust the code to handle this quirk.
Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@xxxxxxx>
---
drivers/pinctrl/nuvoton/pinctrl-wpcm450.c | 14 +++++++++++---
1 file changed, 11 insertions(+), 3 deletions(-)
diff --git a/drivers/pinctrl/nuvoton/pinctrl-wpcm450.c b/drivers/pinctrl/nuvoton/pinctrl-wpcm450.c
index 49b2177af17b2..2d1c1652cfd9d 100644
--- a/drivers/pinctrl/nuvoton/pinctrl-wpcm450.c
+++ b/drivers/pinctrl/nuvoton/pinctrl-wpcm450.c
@@ -628,6 +628,9 @@ struct wpcm450_pincfg {
int fn1, reg1, bit1;
};
+/* Add this value to bit0 or bit1 to indicate that the MFSEL bit is inverted */
+#define INV BIT(5)
+
static const struct wpcm450_pincfg pincfg[] = {
/* PIN FUNCTION 1 FUNCTION 2 */
WPCM450_PINCFG(0, none, NONE, 0, none, NONE, 0),
@@ -665,7 +668,7 @@ static const struct wpcm450_pincfg pincfg[] = {
WPCM450_PINCFG(32, scs1, MFSEL1, 3, none, NONE, 0),
WPCM450_PINCFG(33, scs2, MFSEL1, 4, none, NONE, 0),
- WPCM450_PINCFG(34, scs3, MFSEL1, 5, none, NONE, 0),
+ WPCM450_PINCFG(34, scs3, MFSEL1, 5 | INV, none, NONE, 0),
WPCM450_PINCFG(35, xcs1, MFSEL1, 29, none, NONE, 0),
WPCM450_PINCFG(36, xcs2, MFSEL1, 28, none, NONE, 0),
WPCM450_PINCFG(37, none, NONE, 0, none, NONE, 0), /* DVO */
@@ -725,8 +728,8 @@ static const struct wpcm450_pincfg pincfg[] = {
WPCM450_PINCFG(90, r2err, MFSEL1, 15, none, NONE, 0),
WPCM450_PINCFG(91, r2md, MFSEL1, 16, none, NONE, 0),
WPCM450_PINCFG(92, r2md, MFSEL1, 16, none, NONE, 0),
- WPCM450_PINCFG(93, kbcc, MFSEL1, 17, none, NONE, 0),
- WPCM450_PINCFG(94, kbcc, MFSEL1, 17, none, NONE, 0),
+ WPCM450_PINCFG(93, kbcc, MFSEL1, 17 | INV, none, NONE, 0),
+ WPCM450_PINCFG(94, kbcc, MFSEL1, 17 | INV, none, NONE, 0),
WPCM450_PINCFG(95, none, NONE, 0, none, NONE, 0),
WPCM450_PINCFG(96, none, NONE, 0, none, NONE, 0),
@@ -805,6 +808,11 @@ static void wpcm450_update_mfsel(struct regmap *gcr_regmap, int reg, int bit, in
{
bool value = (fn == fn_selected);
+ if (bit & INV) {
+ value = !value;
+ bit &= ~INV;
+ }
+
regmap_update_bits(gcr_regmap, reg, BIT(bit), value ? BIT(bit) : 0);
}
--
2.35.1
