On Tue, 09 Jun 2015, Hans de Goede wrote:
> 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 <[email protected]>
> Signed-off-by: Hans de Goede <[email protected]>
> ---
> 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),
Please define 15, as MAX_WHATEVER_REG or something.
> .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,
> },
> };
>
--
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
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