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

[Hans de Goede]

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 Prémont <bonb...@linux-vserver.org>
Signed-off-by: Hans de Goede <hdego...@redhat.com>
---
 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),
+               .resources              = axp20x_usb_power_supply_resources,
        },
 };
 
-- 
2.3.6

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