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Subject[PATCH v2 3/9] mfd: axp20x: Add support for AXP813 PMIC
Date
The X-Powers AXP813 PMIC is normally used with Allwinner's A83T SoC.
It has the same range of functions as other X-Powers PMICs, such as
DC-DC buck converter and linear regulator outputs, AC-IN and VBUS
power supplies, power button trigger, GPIOs, ADCs, and a battery
charger.

Note that the IRQ table given in the datasheet is incorrect: in IRQ
enable/status registers 1, there are separate IRQs for ACIN and VBUS,
instead of bits [7:5] being the same as bits [4:2]. So it shares the
same IRQs as the AXP803, rather than the AXP288.

This patch adds basic mfd support for it, with only the power button
enabled.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Acked-for-MFD-by: Lee Jones <lee.jones@linaro.org>
---
drivers/mfd/axp20x-rsb.c | 1 +
drivers/mfd/axp20x.c | 22 ++++++++++++++++++++++
include/linux/mfd/axp20x.h | 29 +++++++++++++++++++++++++++++
3 files changed, 52 insertions(+)

diff --git a/drivers/mfd/axp20x-rsb.c b/drivers/mfd/axp20x-rsb.c
index fd5c7267b136..7ddbd9e8dd03 100644
--- a/drivers/mfd/axp20x-rsb.c
+++ b/drivers/mfd/axp20x-rsb.c
@@ -64,6 +64,7 @@ static const struct of_device_id axp20x_rsb_of_match[] = {
{ .compatible = "x-powers,axp803", .data = (void *)AXP803_ID },
{ .compatible = "x-powers,axp806", .data = (void *)AXP806_ID },
{ .compatible = "x-powers,axp809", .data = (void *)AXP809_ID },
+ { .compatible = "x-powers,axp813", .data = (void *)AXP813_ID },
{ },
};
MODULE_DEVICE_TABLE(of, axp20x_rsb_of_match);
diff --git a/drivers/mfd/axp20x.c b/drivers/mfd/axp20x.c
index 917b6ddc4f15..ec4271ca065c 100644
--- a/drivers/mfd/axp20x.c
+++ b/drivers/mfd/axp20x.c
@@ -44,6 +44,7 @@ static const char * const axp20x_model_names[] = {
"AXP803",
"AXP806",
"AXP809",
+ "AXP813",
};

static const struct regmap_range axp152_writeable_ranges[] = {
@@ -870,6 +871,14 @@ static struct mfd_cell axp809_cells[] = {
},
};

+static struct mfd_cell axp813_cells[] = {
+ {
+ .name = "axp20x-pek",
+ .num_resources = ARRAY_SIZE(axp803_pek_resources),
+ .resources = axp803_pek_resources,
+ }
+};
+
static struct axp20x_dev *axp20x_pm_power_off;
static void axp20x_power_off(void)
{
@@ -956,6 +965,19 @@ int axp20x_match_device(struct axp20x_dev *axp20x)
axp20x->regmap_cfg = &axp22x_regmap_config;
axp20x->regmap_irq_chip = &axp809_regmap_irq_chip;
break;
+ case AXP813_ID:
+ axp20x->nr_cells = ARRAY_SIZE(axp813_cells);
+ axp20x->cells = axp813_cells;
+ axp20x->regmap_cfg = &axp288_regmap_config;
+ /*
+ * The IRQ table given in the datasheet is incorrect.
+ * In IRQ enable/status registers 1, there are separate
+ * IRQs for ACIN and VBUS, instead of bits [7:5] being
+ * the same as bits [4:2]. So it shares the same IRQs
+ * as the AXP803, rather than the AXP288.
+ */
+ axp20x->regmap_irq_chip = &axp803_regmap_irq_chip;
+ break;
default:
dev_err(dev, "unsupported AXP20X ID %lu\n", axp20x->variant);
return -EINVAL;
diff --git a/include/linux/mfd/axp20x.h b/include/linux/mfd/axp20x.h
index 965b027e31b3..e9c908c4fba8 100644
--- a/include/linux/mfd/axp20x.h
+++ b/include/linux/mfd/axp20x.h
@@ -23,6 +23,7 @@ enum axp20x_variants {
AXP803_ID,
AXP806_ID,
AXP809_ID,
+ AXP813_ID,
NR_AXP20X_VARIANTS,
};

@@ -387,6 +388,34 @@ enum {
AXP803_REG_ID_MAX,
};

+enum {
+ AXP813_DCDC1 = 0,
+ AXP813_DCDC2,
+ AXP813_DCDC3,
+ AXP813_DCDC4,
+ AXP813_DCDC5,
+ AXP813_DCDC6,
+ AXP813_DCDC7,
+ AXP813_ALDO1,
+ AXP813_ALDO2,
+ AXP813_ALDO3,
+ AXP813_DLDO1,
+ AXP813_DLDO2,
+ AXP813_DLDO3,
+ AXP813_DLDO4,
+ AXP813_ELDO1,
+ AXP813_ELDO2,
+ AXP813_ELDO3,
+ AXP813_FLDO1,
+ AXP813_FLDO2,
+ AXP813_FLDO3,
+ AXP813_RTC_LDO,
+ AXP813_LDO_IO0,
+ AXP813_LDO_IO1,
+ AXP813_SW,
+ AXP813_REG_ID_MAX,
+};
+
/* IRQs */
enum {
AXP152_IRQ_LDO0IN_CONNECT = 1,
--
2.13.3
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