Re: [PATCH 2/4] mfd/axp2xx: extend axp20x to support axp288 pmic

From: Maxime Ripard
Date: Tue Sep 09 2014 - 03:40:14 EST

Hi Jacob,

I think it would have been nice to have CC'd Carlo Caione, the
original writer of the driver on this.

On Mon, Sep 08, 2014 at 03:24:04PM -0700, Jacob Pan wrote:
> XPower AXP288 is a customized PMIC for Intel Baytrail-CR platforms. Similar
> to AXP202/209, AXP288 comes with USB charger, more LDO and BUCK channels, and
> AD converter. It also provides extended status and interrupt reporting
> capabilities than the devices supported in axp20x.c.
>
> In addition to feature extension, this patch also adds ACPI binding for
> enumeration and hooks for ACPI custom operational region handlers.
>
> Files and common data structures have been renamed from axp20x to axp2xx
> in order to suit the extended scope of devices.
>
> This consolidated driver should support more Xpower PMICs in both device
> tree and ACPI based platforms.
>
> Signed-off-by: Jacob Pan <jacob.jun.pan@xxxxxxxxxxxxxxx>
> ---
> drivers/mfd/axp2xx.c | 424 +++++++++++++++++++++++++++++++++++----------
> include/linux/mfd/axp2xx.h | 57 +++++-
> 2 files changed, 389 insertions(+), 92 deletions(-)
>
> diff --git a/drivers/mfd/axp2xx.c b/drivers/mfd/axp2xx.c
> index c534443..cf7ed16 100644
> --- a/drivers/mfd/axp2xx.c
> +++ b/drivers/mfd/axp2xx.c
> @@ -1,10 +1,14 @@
> /*
> - * axp20x.c - MFD core driver for the X-Powers AXP202 and AXP209
> + * axp2xx.c - MFD core driver for the X-Powers AXP202, AXP209, and AXP288

Could you do the s/axp20x/axp2xx/ in the first patch? It would make
more sense to have it there, and reduce the "noise" in this patch.

> *
> * AXP20x comprises an adaptive USB-Compatible PWM charger, 2 BUCK DC-DC
> * converters, 5 LDOs, multiple 12-bit ADCs of voltage, current and temperature
> * as well as 4 configurable GPIOs.
> *
> + * AXP288 is a customized PMIC for Intel Baytrail CR platform. Similar to AXP20x
> + * it comes with USB charger, more LDO, BUCK channels, and status reporting
> + * capabilities.
> + *

Also, I'm not very convinced that maintaining the list of the
supported AXP chips is very future proof. We have at least 3 other
variants that we know of to support (AXP221, AXP223 and
AXP806/809). This would end up in a huge list :)

> * Author: Carlo Caione <carlo@xxxxxxxxxx>
> *
> * This program is free software; you can redistribute it and/or modify
> @@ -25,9 +29,14 @@
> #include <linux/mfd/core.h>
> #include <linux/of_device.h>
> #include <linux/of_irq.h>
> +#include <linux/acpi.h>
>
> #define AXP20X_OFF 0x80
>
> +static struct mfd_cell *axp2xx_cells;
> +static int axp2xx_nr_cells;
> +static struct regmap_config *regmap_cfg;
> +
> static const struct regmap_range axp20x_writeable_ranges[] = {
> regmap_reg_range(AXP20X_DATACACHE(0), AXP20X_IRQ5_STATE),
> regmap_reg_range(AXP20X_DCDC_MODE, AXP20X_FG_RES),
> @@ -47,6 +56,25 @@ static const struct regmap_access_table axp20x_volatile_table = {
> .n_yes_ranges = ARRAY_SIZE(axp20x_volatile_ranges),
> };
>
> +static const struct regmap_range axp288_writeable_ranges[] = {
> + regmap_reg_range(AXP20X_DATACACHE(0), AXP20X_IRQ6_STATE),
> + regmap_reg_range(AXP20X_DCDC_MODE, AXP288_FG_TUNE5),
> +};
> +
> +static const struct regmap_range axp288_volatile_ranges[] = {
> + regmap_reg_range(AXP20X_IRQ1_EN, AXP20X_IPSOUT_V_HIGH_L),
> +};
> +
> +static const struct regmap_access_table axp288_writeable_table = {
> + .yes_ranges = axp288_writeable_ranges,
> + .n_yes_ranges = ARRAY_SIZE(axp288_writeable_ranges),
> +};
> +
> +static const struct regmap_access_table axp288_volatile_table = {
> + .yes_ranges = axp288_volatile_ranges,
> + .n_yes_ranges = ARRAY_SIZE(axp288_volatile_ranges),
> +};
> +
> static struct resource axp20x_pek_resources[] = {
> {
> .name = "PEK_DBR",
> @@ -61,7 +89,40 @@ static struct resource axp20x_pek_resources[] = {
> },
> };
>
> -static const struct regmap_config axp20x_regmap_config = {
> +static struct resource axp288_battery_resources[] = {
> + {
> + .start = AXP288_IRQ_QWBTU,
> + .end = AXP288_IRQ_QWBTU,
> + .flags = IORESOURCE_IRQ,
> + },
> + {
> + .start = AXP288_IRQ_WBTU,
> + .end = AXP288_IRQ_WBTU,
> + .flags = IORESOURCE_IRQ,
> + },
> + {
> + .start = AXP288_IRQ_QWBTO,
> + .end = AXP288_IRQ_QWBTO,
> + .flags = IORESOURCE_IRQ,
> + },
> + {
> + .start = AXP288_IRQ_WBTO,
> + .end = AXP288_IRQ_WBTO,
> + .flags = IORESOURCE_IRQ,
> + },
> + {
> + .start = AXP288_IRQ_WL2,
> + .end = AXP288_IRQ_WL2,
> + .flags = IORESOURCE_IRQ,
> + },
> + {
> + .start = AXP288_IRQ_WL1,
> + .end = AXP288_IRQ_WL1,
> + .flags = IORESOURCE_IRQ,
> + },
> +};
> +
> +static struct regmap_config axp20x_regmap_config = {
> .reg_bits = 8,
> .val_bits = 8,
> .wr_table = &axp20x_writeable_table,
> @@ -70,47 +131,96 @@ static const struct regmap_config axp20x_regmap_config = {
> .cache_type = REGCACHE_RBTREE,
> };
>
> -#define AXP20X_IRQ(_irq, _off, _mask) \
> - [AXP20X_IRQ_##_irq] = { .reg_offset = (_off), .mask = BIT(_mask) }
> +static struct regmap_config axp288_regmap_config = {
> + .reg_bits = 8,
> + .val_bits = 8,
> + .wr_table = &axp288_writeable_table,
> + .volatile_table = &axp288_volatile_table,
> + .max_register = AXP288_FG_TUNE5,
> + .cache_type = REGCACHE_RBTREE,
> +};
> +
> +#define INIT_REGMAP_IRQ(_variant, _irq, _off, _mask) \
> + [_variant##_IRQ_##_irq] = { .reg_offset = (_off), .mask = BIT(_mask) }
>
> static const struct regmap_irq axp20x_regmap_irqs[] = {
> - AXP20X_IRQ(ACIN_OVER_V, 0, 7),
> - AXP20X_IRQ(ACIN_PLUGIN, 0, 6),
> - AXP20X_IRQ(ACIN_REMOVAL, 0, 5),
> - AXP20X_IRQ(VBUS_OVER_V, 0, 4),
> - AXP20X_IRQ(VBUS_PLUGIN, 0, 3),
> - AXP20X_IRQ(VBUS_REMOVAL, 0, 2),
> - AXP20X_IRQ(VBUS_V_LOW, 0, 1),
> - AXP20X_IRQ(BATT_PLUGIN, 1, 7),
> - AXP20X_IRQ(BATT_REMOVAL, 1, 6),
> - AXP20X_IRQ(BATT_ENT_ACT_MODE, 1, 5),
> - AXP20X_IRQ(BATT_EXIT_ACT_MODE, 1, 4),
> - AXP20X_IRQ(CHARG, 1, 3),
> - AXP20X_IRQ(CHARG_DONE, 1, 2),
> - AXP20X_IRQ(BATT_TEMP_HIGH, 1, 1),
> - AXP20X_IRQ(BATT_TEMP_LOW, 1, 0),
> - AXP20X_IRQ(DIE_TEMP_HIGH, 2, 7),
> - AXP20X_IRQ(CHARG_I_LOW, 2, 6),
> - AXP20X_IRQ(DCDC1_V_LONG, 2, 5),
> - AXP20X_IRQ(DCDC2_V_LONG, 2, 4),
> - AXP20X_IRQ(DCDC3_V_LONG, 2, 3),
> - AXP20X_IRQ(PEK_SHORT, 2, 1),
> - AXP20X_IRQ(PEK_LONG, 2, 0),
> - AXP20X_IRQ(N_OE_PWR_ON, 3, 7),
> - AXP20X_IRQ(N_OE_PWR_OFF, 3, 6),
> - AXP20X_IRQ(VBUS_VALID, 3, 5),
> - AXP20X_IRQ(VBUS_NOT_VALID, 3, 4),
> - AXP20X_IRQ(VBUS_SESS_VALID, 3, 3),
> - AXP20X_IRQ(VBUS_SESS_END, 3, 2),
> - AXP20X_IRQ(LOW_PWR_LVL1, 3, 1),
> - AXP20X_IRQ(LOW_PWR_LVL2, 3, 0),
> - AXP20X_IRQ(TIMER, 4, 7),
> - AXP20X_IRQ(PEK_RIS_EDGE, 4, 6),
> - AXP20X_IRQ(PEK_FAL_EDGE, 4, 5),
> - AXP20X_IRQ(GPIO3_INPUT, 4, 3),
> - AXP20X_IRQ(GPIO2_INPUT, 4, 2),
> - AXP20X_IRQ(GPIO1_INPUT, 4, 1),
> - AXP20X_IRQ(GPIO0_INPUT, 4, 0),
> + INIT_REGMAP_IRQ(AXP20X, ACIN_OVER_V, 0, 7),
> + INIT_REGMAP_IRQ(AXP20X, ACIN_PLUGIN, 0, 6),
> + INIT_REGMAP_IRQ(AXP20X, ACIN_REMOVAL, 0, 5),
> + INIT_REGMAP_IRQ(AXP20X, VBUS_OVER_V, 0, 4),
> + INIT_REGMAP_IRQ(AXP20X, VBUS_PLUGIN, 0, 3),
> + INIT_REGMAP_IRQ(AXP20X, VBUS_REMOVAL, 0, 2),
> + INIT_REGMAP_IRQ(AXP20X, VBUS_V_LOW, 0, 1),
> + INIT_REGMAP_IRQ(AXP20X, BATT_PLUGIN, 1, 7),
> + INIT_REGMAP_IRQ(AXP20X, BATT_REMOVAL, 1, 6),
> + INIT_REGMAP_IRQ(AXP20X, BATT_ENT_ACT_MODE, 1, 5),
> + INIT_REGMAP_IRQ(AXP20X, BATT_EXIT_ACT_MODE, 1, 4),
> + INIT_REGMAP_IRQ(AXP20X, CHARG, 1, 3),
> + INIT_REGMAP_IRQ(AXP20X, CHARG_DONE, 1, 2),
> + INIT_REGMAP_IRQ(AXP20X, BATT_TEMP_HIGH, 1, 1),
> + INIT_REGMAP_IRQ(AXP20X, BATT_TEMP_LOW, 1, 0),
> + INIT_REGMAP_IRQ(AXP20X, DIE_TEMP_HIGH, 2, 7),
> + INIT_REGMAP_IRQ(AXP20X, CHARG_I_LOW, 2, 6),
> + INIT_REGMAP_IRQ(AXP20X, DCDC1_V_LONG, 2, 5),
> + INIT_REGMAP_IRQ(AXP20X, DCDC2_V_LONG, 2, 4),
> + INIT_REGMAP_IRQ(AXP20X, DCDC3_V_LONG, 2, 3),
> + INIT_REGMAP_IRQ(AXP20X, PEK_SHORT, 2, 1),
> + INIT_REGMAP_IRQ(AXP20X, PEK_LONG, 2, 0),
> + INIT_REGMAP_IRQ(AXP20X, N_OE_PWR_ON, 3, 7),
> + INIT_REGMAP_IRQ(AXP20X, N_OE_PWR_OFF, 3, 6),
> + INIT_REGMAP_IRQ(AXP20X, VBUS_VALID, 3, 5),
> + INIT_REGMAP_IRQ(AXP20X, VBUS_NOT_VALID, 3, 4),
> + INIT_REGMAP_IRQ(AXP20X, VBUS_SESS_VALID, 3, 3),
> + INIT_REGMAP_IRQ(AXP20X, VBUS_SESS_END, 3, 2),
> + INIT_REGMAP_IRQ(AXP20X, LOW_PWR_LVL1, 3, 1),
> + INIT_REGMAP_IRQ(AXP20X, LOW_PWR_LVL2, 3, 0),
> + INIT_REGMAP_IRQ(AXP20X, TIMER, 4, 7),
> + INIT_REGMAP_IRQ(AXP20X, PEK_RIS_EDGE, 4, 6),
> + INIT_REGMAP_IRQ(AXP20X, PEK_FAL_EDGE, 4, 5),
> + INIT_REGMAP_IRQ(AXP20X, GPIO3_INPUT, 4, 3),
> + INIT_REGMAP_IRQ(AXP20X, GPIO2_INPUT, 4, 2),
> + INIT_REGMAP_IRQ(AXP20X, GPIO1_INPUT, 4, 1),
> + INIT_REGMAP_IRQ(AXP20X, GPIO0_INPUT, 4, 0),
> +};
> +
> +/* some IRQs are compatible with axp20x models */
> +static const struct regmap_irq axp288_regmap_irqs[] = {
> + INIT_REGMAP_IRQ(AXP20X, VBUS_REMOVAL, 0, 2),
> + INIT_REGMAP_IRQ(AXP20X, VBUS_PLUGIN, 0, 3),
> + INIT_REGMAP_IRQ(AXP20X, VBUS_OVER_V, 0, 4),
> +
> + INIT_REGMAP_IRQ(AXP20X, CHARG_DONE, 1, 2),
> + INIT_REGMAP_IRQ(AXP20X, CHARG, 1, 3),
> + INIT_REGMAP_IRQ(AXP288, SAFE_QUIT, 1, 4),
> + INIT_REGMAP_IRQ(AXP288, SAFE_ENTER, 1, 5),
> + INIT_REGMAP_IRQ(AXP20X, BATT_REMOVAL, 1, 6),
> + INIT_REGMAP_IRQ(AXP20X, BATT_PLUGIN, 1, 7),
> +
> + INIT_REGMAP_IRQ(AXP288, QWBTU, 2, 0),
> + INIT_REGMAP_IRQ(AXP288, WBTU, 2, 1),
> + INIT_REGMAP_IRQ(AXP288, QWBTO, 2, 2),
> + INIT_REGMAP_IRQ(AXP288, WBTU, 2, 3),
> + INIT_REGMAP_IRQ(AXP288, QCBTU, 2, 4),
> + INIT_REGMAP_IRQ(AXP288, CBTU, 2, 5),
> + INIT_REGMAP_IRQ(AXP288, QCBTO, 2, 6),
> + INIT_REGMAP_IRQ(AXP288, CBTO, 2, 7),
> +
> + INIT_REGMAP_IRQ(AXP288, WL2, 3, 0),
> + INIT_REGMAP_IRQ(AXP288, WL1, 3, 1),
> + INIT_REGMAP_IRQ(AXP288, GPADC, 3, 2),
> + INIT_REGMAP_IRQ(AXP288, OT, 3, 7),
> +
> + INIT_REGMAP_IRQ(AXP288, GPIO0, 4, 0),
> + INIT_REGMAP_IRQ(AXP288, GPIO1, 4, 1),
> + INIT_REGMAP_IRQ(AXP288, POKO, 4, 2),
> + INIT_REGMAP_IRQ(AXP288, POKL, 4, 3),
> + INIT_REGMAP_IRQ(AXP288, POKS, 4, 4),
> + INIT_REGMAP_IRQ(AXP288, POKN, 4, 5),
> + INIT_REGMAP_IRQ(AXP288, POKP, 4, 6),
> + INIT_REGMAP_IRQ(AXP20X, TIMER, 4, 7),
> +
> + INIT_REGMAP_IRQ(AXP288, MV_CHNG, 5, 0),
> + INIT_REGMAP_IRQ(AXP288, BC_USB_CHNG, 5, 1),
> };
>
> static const struct of_device_id axp20x_of_match[] = {
> @@ -123,19 +233,26 @@ MODULE_DEVICE_TABLE(of, axp20x_of_match);
> /*
> * This is useless for OF-enabled devices, but it is needed by I2C subsystem
> */
> -static const struct i2c_device_id axp20x_i2c_id[] = {
> +static const struct i2c_device_id axp2xx_i2c_id[] = {
> { },
> };
> -MODULE_DEVICE_TABLE(i2c, axp20x_i2c_id);
> +MODULE_DEVICE_TABLE(i2c, axp2xx_i2c_id);
>
> -static const struct regmap_irq_chip axp20x_regmap_irq_chip = {
> - .name = "axp20x_irq_chip",
> +static struct acpi_device_id axp2xx_acpi_match[] = {
> + {
> + .id = "INT33F4",
> + .driver_data = (kernel_ulong_t)AXP288_ID,
> + },
> + { },
> +};
> +MODULE_DEVICE_TABLE(acpi, axp2xx_acpi_match);
> +
> +/* common irq chip attributes only */
> +static struct regmap_irq_chip axp2xx_regmap_irq_chip = {
> + .name = "axp2xx_irq_chip",
> .status_base = AXP20X_IRQ1_STATE,
> .ack_base = AXP20X_IRQ1_STATE,
> .mask_base = AXP20X_IRQ1_EN,
> - .num_regs = 5,
> - .irqs = axp20x_regmap_irqs,
> - .num_irqs = ARRAY_SIZE(axp20x_regmap_irqs),
> .mask_invert = true,
> .init_ack_masked = true,
> };
> @@ -161,98 +278,223 @@ static struct mfd_cell axp20x_cells[] = {
> },
> };
>
> -static struct axp20x_dev *axp20x_pm_power_off;
> -static void axp20x_power_off(void)
> +static struct resource axp288_adc_resources[] = {
> + {
> + .name = "GPADC",
> + .start = AXP288_IRQ_GPADC,
> + .end = AXP288_IRQ_GPADC,
> + .flags = IORESOURCE_IRQ,
> + },
> +};
> +
> +static struct resource axp288_charger_resources[] = {
> + {
> + .start = AXP288_IRQ_OV,
> + .end = AXP288_IRQ_OV,
> + .flags = IORESOURCE_IRQ,
> + },
> + {
> + .start = AXP288_IRQ_DONE,
> + .end = AXP288_IRQ_DONE,
> + .flags = IORESOURCE_IRQ,
> + },
> + {
> + .start = AXP288_IRQ_CHARGING,
> + .end = AXP288_IRQ_CHARGING,
> + .flags = IORESOURCE_IRQ,
> + },
> + {
> + .start = AXP288_IRQ_SAFE_QUIT,
> + .end = AXP288_IRQ_SAFE_QUIT,
> + .flags = IORESOURCE_IRQ,
> + },
> + {
> + .start = AXP288_IRQ_SAFE_ENTER,
> + .end = AXP288_IRQ_SAFE_ENTER,
> + .flags = IORESOURCE_IRQ,
> + },
> + {
> + .start = AXP288_IRQ_QCBTU,
> + .end = AXP288_IRQ_QCBTU,
> + .flags = IORESOURCE_IRQ,
> + },
> + {
> + .start = AXP288_IRQ_CBTU,
> + .end = AXP288_IRQ_CBTU,
> + .flags = IORESOURCE_IRQ,
> + },
> + {
> + .start = AXP288_IRQ_QCBTO,
> + .end = AXP288_IRQ_QCBTO,
> + .flags = IORESOURCE_IRQ,
> + },
> + {
> + .start = AXP288_IRQ_CBTO,
> + .end = AXP288_IRQ_CBTO,
> + .flags = IORESOURCE_IRQ,
> + },
> +};
> +
> +static struct mfd_cell axp288_cells[] = {
> + {
> + .name = "axp288_adc",
> + .num_resources = ARRAY_SIZE(axp288_adc_resources),
> + .resources = axp288_adc_resources,
> + },
> + {
> + .name = "axp288_charger",
> + .num_resources = ARRAY_SIZE(axp288_charger_resources),
> + .resources = axp288_charger_resources,
> + },
> + {
> + .name = "axp288_battery",
> + .num_resources = ARRAY_SIZE(axp288_battery_resources),
> + .resources = axp288_battery_resources,
> + },
> + {
> + .name = "axp288_acpi_opregion",
> + },
> +};
> +
> +static struct axp2xx_dev *axp2xx_pm_power_off;
> +static void axp2xx_power_off(void)
> {
> - regmap_write(axp20x_pm_power_off->regmap, AXP20X_OFF_CTRL,
> + if (axp2xx_pm_power_off->variant == AXP288_ID)
> + return;
> + regmap_write(axp2xx_pm_power_off->regmap, AXP20X_OFF_CTRL,
> AXP20X_OFF);
> }
>
> -static int axp20x_i2c_probe(struct i2c_client *i2c,
> - const struct i2c_device_id *id)
> +static int axp2xx_match_device(struct axp2xx_dev *axp2xx, struct device *dev)
> {
> - struct axp20x_dev *axp20x;
> + const struct acpi_device_id *acpi_id;
> const struct of_device_id *of_id;
> - int ret;
>
> - axp20x = devm_kzalloc(&i2c->dev, sizeof(*axp20x), GFP_KERNEL);
> - if (!axp20x)
> - return -ENOMEM;
> + of_id = of_match_device(axp2xx_of_match, dev);
> + if (of_id) {
> + axp2xx->variant = (long) of_id->data;
> + goto found_match;
> + }
>
> - of_id = of_match_device(axp20x_of_match, &i2c->dev);
> - if (!of_id) {
> - dev_err(&i2c->dev, "Unable to setup AXP20X data\n");
> + acpi_id = acpi_match_device(dev->driver->acpi_match_table, dev);
> + if (!acpi_id || !acpi_id->driver_data) {
> + dev_err(dev, "Unable to setup AXP2XX ACPI data\n");
> return -ENODEV;
> }
> - axp20x->variant = (long) of_id->data;
> + axp2xx->variant = (long) acpi_id->driver_data;

Shouldn't that be in the if statement above? I guess acpi_id will be
null on a DT-based system.

> +
> +found_match:
> + switch (axp2xx->variant) {
> + case AXP202_ID:
> + case AXP209_ID:
> + dev_dbg(dev, "AXP2xx variant AXP202/209 found\n");
> + axp2xx_nr_cells = ARRAY_SIZE(axp20x_cells);
> + axp2xx_cells = axp20x_cells;
> + regmap_cfg = &axp20x_regmap_config;
> + axp2xx_regmap_irq_chip.num_regs = 5;
> + axp2xx_regmap_irq_chip.irqs = axp20x_regmap_irqs;
> + axp2xx_regmap_irq_chip.num_irqs =
> + ARRAY_SIZE(axp20x_regmap_irqs);
> + break;
> + case AXP288_ID:
> + dev_dbg(dev, "AXP2xx variant AXP288 found\n");
> + axp2xx_cells = axp288_cells;
> + axp2xx_nr_cells = ARRAY_SIZE(axp288_cells);
> + axp2xx_regmap_irq_chip.irqs = axp288_regmap_irqs;
> + axp2xx_regmap_irq_chip.num_irqs =
> + ARRAY_SIZE(axp288_regmap_irqs);
> + axp2xx_regmap_irq_chip.num_regs = 6;
> + regmap_cfg = &axp288_regmap_config;
> + break;
> + default:
> + dev_err(dev, "unsupported AXP2XX ID %lu\n", axp2xx->variant);
> + return -ENODEV;
> + }
> +
> + return 0;
> +}
> +
> +static int axp2xx_i2c_probe(struct i2c_client *i2c,
> + const struct i2c_device_id *id)
> +{
> + struct axp2xx_dev *axp2xx;
> + int ret;
>
> - axp20x->i2c_client = i2c;
> - axp20x->dev = &i2c->dev;
> - dev_set_drvdata(axp20x->dev, axp20x);
> + axp2xx = devm_kzalloc(&i2c->dev, sizeof(*axp2xx), GFP_KERNEL);
> + if (!axp2xx)
> + return -ENOMEM;
> +
> + ret = axp2xx_match_device(axp2xx, &i2c->dev);
> + if (ret)
> + return ret;
> + axp2xx->i2c_client = i2c;
> + axp2xx->dev = &i2c->dev;
> + dev_set_drvdata(axp2xx->dev, axp2xx);
>
> - axp20x->regmap = devm_regmap_init_i2c(i2c, &axp20x_regmap_config);
> - if (IS_ERR(axp20x->regmap)) {
> - ret = PTR_ERR(axp20x->regmap);
> + axp2xx->regmap = devm_regmap_init_i2c(i2c, regmap_cfg);
> + if (IS_ERR(axp2xx->regmap)) {
> + ret = PTR_ERR(axp2xx->regmap);
> dev_err(&i2c->dev, "regmap init failed: %d\n", ret);
> return ret;
> }
>
> - ret = regmap_add_irq_chip(axp20x->regmap, i2c->irq,
> + ret = regmap_add_irq_chip(axp2xx->regmap, i2c->irq,
> IRQF_ONESHOT | IRQF_SHARED, -1,
> - &axp20x_regmap_irq_chip,
> - &axp20x->regmap_irqc);
> + &axp2xx_regmap_irq_chip,
> + &axp2xx->regmap_irqc);
> if (ret) {
> dev_err(&i2c->dev, "failed to add irq chip: %d\n", ret);
> return ret;
> }
>
> - ret = mfd_add_devices(axp20x->dev, -1, axp20x_cells,
> - ARRAY_SIZE(axp20x_cells), NULL, 0, NULL);
> + ret = mfd_add_devices(axp2xx->dev, -1, axp2xx_cells,
> + axp2xx_nr_cells, NULL, 0, NULL);
>
> if (ret) {
> dev_err(&i2c->dev, "failed to add MFD devices: %d\n", ret);
> - regmap_del_irq_chip(i2c->irq, axp20x->regmap_irqc);
> + regmap_del_irq_chip(i2c->irq, axp2xx->regmap_irqc);
> return ret;
> }
>
> if (!pm_power_off) {
> - axp20x_pm_power_off = axp20x;
> - pm_power_off = axp20x_power_off;
> + axp2xx_pm_power_off = axp2xx;
> + pm_power_off = axp2xx_power_off;
> }
>
> - dev_info(&i2c->dev, "AXP20X driver loaded\n");
> + dev_info(&i2c->dev, "AXP2XX driver loaded\n");
>
> return 0;
> }
>
> -static int axp20x_i2c_remove(struct i2c_client *i2c)
> +static int axp2xx_i2c_remove(struct i2c_client *i2c)
> {
> - struct axp20x_dev *axp20x = i2c_get_clientdata(i2c);
> + struct axp2xx_dev *axp2xx = i2c_get_clientdata(i2c);
>
> - if (axp20x == axp20x_pm_power_off) {
> - axp20x_pm_power_off = NULL;
> + if (axp2xx == axp2xx_pm_power_off) {
> + axp2xx_pm_power_off = NULL;
> pm_power_off = NULL;
> }
>
> - mfd_remove_devices(axp20x->dev);
> - regmap_del_irq_chip(axp20x->i2c_client->irq, axp20x->regmap_irqc);
> + mfd_remove_devices(axp2xx->dev);
> + regmap_del_irq_chip(axp2xx->i2c_client->irq, axp2xx->regmap_irqc);
>
> return 0;
> }
>
> -static struct i2c_driver axp20x_i2c_driver = {
> +static struct i2c_driver axp2xx_i2c_driver = {
> .driver = {
> - .name = "axp20x",
> + .name = "axp2xx",
> .owner = THIS_MODULE,
> - .of_match_table = of_match_ptr(axp20x_of_match),
> + .of_match_table = of_match_ptr(axp2xx_of_match),
> + .acpi_match_table = ACPI_PTR(axp2xx_acpi_match),
> },
> - .probe = axp20x_i2c_probe,
> - .remove = axp20x_i2c_remove,
> - .id_table = axp20x_i2c_id,
> + .probe = axp2xx_i2c_probe,
> + .remove = axp2xx_i2c_remove,
> + .id_table = axp2xx_i2c_id,
> };
>
> -module_i2c_driver(axp20x_i2c_driver);
> +module_i2c_driver(axp2xx_i2c_driver);
>
> -MODULE_DESCRIPTION("PMIC MFD core driver for AXP20X");
> +MODULE_DESCRIPTION("PMIC MFD core driver for AXP2XX");
> MODULE_AUTHOR("Carlo Caione <carlo@xxxxxxxxxx>");
> MODULE_LICENSE("GPL");
> diff --git a/include/linux/mfd/axp2xx.h b/include/linux/mfd/axp2xx.h
> index d0e31a2..672f048 100644
> --- a/include/linux/mfd/axp2xx.h
> +++ b/include/linux/mfd/axp2xx.h
> @@ -14,6 +14,8 @@
> enum {
> AXP202_ID = 0,
> AXP209_ID,
> + AXP288_ID,
> + NR_AXP288_VARIANTS,

Can't that be a more generic name? Something like NR_AXP2XX instead?

Also, could you put me in CC in the later iterations of the patches?

Thanks!
Maxime

--
Maxime Ripard, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com

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