ARM: shmobile: stout: enable R-Car Gen2 regulator quirk

Regulator setup is suboptimal on H2 Stout too. The Stout newly has
two DA9210 regulators, so the quirk is extended to handle another
DA9210 at i2c address 0x70.
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

arch/arm/mach-shmobile/regulator-quirk-rcar-gen2.c

 /*
  * R-Car Generation 2 da9063/da9210 regulator quirk
  *
- * The r8a7790/lager and r8a7791/koelsch development boards have da9063 and
- * da9210 regulators.  Both regulators have their interrupt request lines tied
- * to the same interrupt pin (IRQ2) on the SoC.
+ * Certain Gen2 development boards have an da9063 and one or more da9210
+ * regulators. All of these regulators have their interrupt request lines
+ * tied to the same interrupt pin (IRQ2) on the SoC.
  *
  * After cold boot or da9063-induced restart, both the da9063 and da9210 seem
  * to assert their interrupt request lines.  Hence as soon as one driver
@@ -50,7 +50,7 @@ static void __iomem *irqc;
 static u8 da9063_irq_clr[] = { DA9063_REG_IRQ_MASK_A, 0xff, 0xff, 0xff, 0xff };
 static u8 da9210_irq_clr[] = { DA9210_REG_MASK_A, 0xff, 0xff };
 
-static struct i2c_msg da9xxx_msgs[2] = {
+static struct i2c_msg da9xxx_msgs[3] = {
 	{
 		.addr = 0x58,
 		.len = ARRAY_SIZE(da9063_irq_clr),
@@ -59,6 +59,10 @@ static struct i2c_msg da9xxx_msgs[2] = {
 		.addr = 0x68,
 		.len = ARRAY_SIZE(da9210_irq_clr),
 		.buf = da9210_irq_clr,
+	}, {
+		.addr = 0x70,
+		.len = ARRAY_SIZE(da9210_irq_clr),
+		.buf = da9210_irq_clr,
 	},
 };
 
@@ -85,11 +89,15 @@ static int regulator_quirk_notify(struct notifier_block *nb,
 	dev_dbg(dev, "Detected %s\n", client->name);
 
 	if ((client->addr == 0x58 && !strcmp(client->name, "da9063")) ||
-	    (client->addr == 0x68 && !strcmp(client->name, "da9210"))) {
-		int ret;
+	    (client->addr == 0x68 && !strcmp(client->name, "da9210")) ||
+	    (client->addr == 0x70 && !strcmp(client->name, "da9210"))) {
+		int ret, len;
+
+		/* There are two DA9210 on Stout, one on the other boards. */
+		len = of_machine_is_compatible("renesas,stout") ? 3 : 2;
 
 		dev_info(&client->dev, "clearing da9063/da9210 interrupts\n");
-		ret = i2c_transfer(client->adapter, da9xxx_msgs, ARRAY_SIZE(da9xxx_msgs));
+		ret = i2c_transfer(client->adapter, da9xxx_msgs, len);
 		if (ret != ARRAY_SIZE(da9xxx_msgs))
 			dev_err(&client->dev, "i2c error %d\n", ret);
 	}
@@ -118,6 +126,7 @@ static int __init rcar_gen2_regulator_quirk(void)
 
 	if (!of_machine_is_compatible("renesas,koelsch") &&
 	    !of_machine_is_compatible("renesas,lager") &&
+	    !of_machine_is_compatible("renesas,stout") &&
 	    !of_machine_is_compatible("renesas,gose"))
 		return -ENODEV;