Merge tag 'renesas-pinctrl-for-v7.2-tag2' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-drivers into devel

pinctrl: renesas: Updates for v7.2 (take two)

  - Add GPIO config support on RZ/G2L,
  - Miscellaneous fixes and improvements.

Signed-off-by: Linus Walleij <linusw@kernel.org>

drivers/pinctrl/renesas/pinctrl-rzg2l.c

@@ -361,16 +361,16 @@ struct rzg2l_pinctrl_pin_settings {
  * @pmc: PMC registers cache
  * @pfc: PFC registers cache
  * @iolh: IOLH registers cache
- * @pupd: PUPD registers cache
  * @ien: IEN registers cache
+ * @pupd: PUPD registers cache
  * @smt: SMT registers cache
  * @sr: SR registers cache
  * @nod: NOD registers cache
  * @clone: Clone register cache
  * @sd_ch: SD_CH registers cache
  * @eth_poc: ET_POC registers cache
- * @other_poc: OTHER_POC register cache
  * @oen: Output Enable register cache
+ * @other_poc: OTHER_POC register cache
  * @qspi: QSPI registers cache
  */
 struct rzg2l_pinctrl_reg_cache {
@@ -388,7 +388,7 @@ struct rzg2l_pinctrl_reg_cache {
 	u8	sd_ch[2];
 	u8	eth_poc[2];
 	u8	oen;
-	u8      other_poc;
+	u8	other_poc;
 	u8	qspi;
 };
 
@@ -1281,7 +1281,7 @@ static int rzg2l_read_oen(struct rzg2l_pinctrl *pctrl, unsigned int _pin)
 	int bit;
 
 	if (!pctrl->data->pin_to_oen_bit)
-		return -EOPNOTSUPP;
+		return -ENOTSUPP;
 
 	bit = pctrl->data->pin_to_oen_bit(pctrl, _pin);
 	if (bit < 0)
@@ -1323,7 +1323,7 @@ static int rzg2l_write_oen(struct rzg2l_pinctrl *pctrl, unsigned int _pin, u8 oe
 	u8 val;
 
 	if (!pctrl->data->pin_to_oen_bit)
-		return -EOPNOTSUPP;
+		return -ENOTSUPP;
 
 	bit = pctrl->data->pin_to_oen_bit(pctrl, _pin);
 	if (bit < 0)
@@ -1754,7 +1754,7 @@ static int rzg2l_pinctrl_pinconf_set(struct pinctrl_dev *pctldev,
 			break;
 
 		default:
-			return -EOPNOTSUPP;
+			return -ENOTSUPP;
 		}
 	}
 
@@ -1837,7 +1837,7 @@ static int rzg2l_pinctrl_pinconf_group_get(struct pinctrl_dev *pctldev,
 
 		/* Check config matching between to pin  */
 		if (i && prev_config != *config)
-			return -EOPNOTSUPP;
+			return -ENOTSUPP;
 
 		prev_config = *config;
 	}
@@ -3212,6 +3212,7 @@ static int rzg2l_gpio_register(struct rzg2l_pinctrl *pctrl)
 	chip->direction_output = rzg2l_gpio_direction_output;
 	chip->get = rzg2l_gpio_get;
 	chip->set = rzg2l_gpio_set;
+	chip->set_config = gpiochip_generic_config;
 	chip->label = name;
 	chip->parent = pctrl->dev;
 	chip->owner = THIS_MODULE;

drivers/pinctrl/renesas/pinctrl-rzt2h.c

@@ -191,6 +191,12 @@ static void rzt2h_pinctrl_set_pfc_mode(struct rzt2h_pinctrl *pctrl,
 
 	guard(raw_spinlock_irqsave)(&pctrl->lock);
 
+	reg64 = rzt2h_pinctrl_readq(pctrl, port, PFC(port));
+	/* Check if pin is already configured to the desired function */
+	if ((rzt2h_pinctrl_readb(pctrl, port, PMC(port)) & BIT(pin)) &&
+	    field_get(PFC_PIN_MASK(pin), reg64) == func)
+		return;
+
 	/* Set pin to 'Non-use (Hi-Z input protection)'  */
 	reg16 = rzt2h_pinctrl_readw(pctrl, port, PM(port));
 	reg16 &= ~PM_PIN_MASK(pin);
@@ -200,7 +206,6 @@ static void rzt2h_pinctrl_set_pfc_mode(struct rzt2h_pinctrl *pctrl,
 	rzt2h_pinctrl_set_gpio_en(pctrl, port, pin, true);
 
 	/* Select Pin function mode with PFC register */
-	reg64 = rzt2h_pinctrl_readq(pctrl, port, PFC(port));
 	reg64 &= ~PFC_PIN_MASK(pin);
 	rzt2h_pinctrl_writeq(pctrl, port, reg64 | ((u64)func << (pin * 8)), PFC(port));
 
@@ -1140,7 +1145,7 @@ static int rzt2h_pinctrl_register(struct rzt2h_pinctrl *pctrl)
 	struct pinctrl_desc *desc = &pctrl->desc;
 	struct device *dev = pctrl->dev;
 	struct pinctrl_pin_desc *pins;
-	unsigned int i, j;
+	unsigned int i;
 	int ret;
 
 	desc->name = DRV_NAME;
@@ -1157,11 +1162,9 @@ static int rzt2h_pinctrl_register(struct rzt2h_pinctrl *pctrl)
 	pctrl->pins = pins;
 	desc->pins = pins;
 
-	for (i = 0, j = 0; i < pctrl->data->n_port_pins; i++) {
+	for (i = 0; i < pctrl->data->n_port_pins; i++) {
 		pins[i].number = i;
 		pins[i].name = rzt2h_gpio_names[i];
-		if (i && !(i % RZT2H_PINS_PER_PORT))
-			j++;
 	}
 
 	ret = devm_pinctrl_register_and_init(dev, desc, pctrl, &pctrl->pctl);

drivers/pinctrl/renesas/pinctrl-rzv2m.c

@@ -661,7 +661,7 @@ static int rzv2m_pinctrl_pinconf_set(struct pinctrl_dev *pctldev,
 		}
 
 		default:
-			return -EOPNOTSUPP;
+			return -ENOTSUPP;
 		}
 	}
 
@@ -711,7 +711,7 @@ static int rzv2m_pinctrl_pinconf_group_get(struct pinctrl_dev *pctldev,
 
 		/* Check config matches previous pins */
 		if (i && prev_config != *config)
-			return -EOPNOTSUPP;
+			return -ENOTSUPP;
 
 		prev_config = *config;
 	}