[PATCH 2/8] mfd: axp20x: Add a cell for the usb power_supply part of the axp20x PMICs

Add a cell for the usb power_supply part of the axp20x PMICs.

Note that this cell is only for the usb power_supply part and not the
ac-power / battery-charger / rtc-backup-bat-charger bits.

Depending on the board each of those must be enabled / disabled separately
in devicetree as most boards do not use all 4. So in dt each one needs its
own child-node of the axp20x node. Another reason for using separate child
nodes for each is so that other devicetree nodes can have a power-supply
property with a phandle referencing a node representing a single
power-supply.

The decision to use a separate devicetree node for each is reflected on
the kernel side by each getting its own mfd-cell / platform_device and
platform-driver.

Cc: Bruno Pr?mont <bonbons@linux-vserver.org>
Signed-off-by: Hans de Goede <redacted>
---
 drivers/mfd/axp20x.c | 32 +++++++++++++++++++++++++++++++-
 1 file changed, 31 insertions(+), 1 deletion(-)

diff --git a/drivers/mfd/axp20x.c b/drivers/mfd/axp20x.c
index 6ffbc11..47ce233 100644
--- a/drivers/mfd/axp20x.c
+++ b/drivers/mfd/axp20x.c

@@ -113,6 +113,30 @@ static struct resource axp20x_pek_resources[] = {
 	},
 };
 
+static struct resource axp20x_usb_power_supply_resources[] = {
+	{
+		.name	= "VBUS_PLUGIN",
+		.start	= AXP20X_IRQ_VBUS_PLUGIN,
+		.end	= AXP20X_IRQ_VBUS_PLUGIN,
+		.flags	= IORESOURCE_IRQ,
+	}, {
+		.name	= "VBUS_REMOVAL",
+		.start	= AXP20X_IRQ_VBUS_REMOVAL,
+		.end	= AXP20X_IRQ_VBUS_REMOVAL,
+		.flags	= IORESOURCE_IRQ,
+	}, {
+		.name	= "VBUS_VALID",
+		.start	= AXP20X_IRQ_VBUS_VALID,
+		.end	= AXP20X_IRQ_VBUS_VALID,
+		.flags	= IORESOURCE_IRQ,
+	}, {
+		.name	= "VBUS_NOT_VALID",
+		.start	= AXP20X_IRQ_VBUS_NOT_VALID,
+		.end	= AXP20X_IRQ_VBUS_NOT_VALID,
+		.flags	= IORESOURCE_IRQ,
+	},
+};

 static struct resource axp22x_pek_resources[] = {
 	{
 		.name   = "PEK_DBR",

@@ -165,7 +189,7 @@ static const struct regmap_config axp20x_regmap_config = {
 	.val_bits	= 8,
 	.wr_table	= &axp20x_writeable_table,
 	.volatile_table	= &axp20x_volatile_table,
-	.max_register	= AXP20X_FG_RES,
+	.max_register	= AXP20X_OCV(15),
 	.cache_type	= REGCACHE_RBTREE,
 };
 

@@ -368,6 +392,12 @@ static struct mfd_cell axp20x_cells[] = {
 		.resources		= axp20x_pek_resources,
 	}, {
 		.name			= "axp20x-regulator",
+	}, {
+		.name			= "axp20x-usb-power-supply",
+		.of_compatible		= "x-powers,axp202-usb-power-supply",
+		.num_resources		=
+				ARRAY_SIZE(axp20x_usb_power_supply_resources),