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Date: Tue, 9 Sep 2014 05:45:17 -0700
From: Jacob Pan <jacob.jun.pan@...ux.intel.com>
To: Maxime Ripard <maxime.ripard@...e-electrons.com>
Cc: IIO <linux-iio@...r.kernel.org>,
LKML <linux-kernel@...r.kernel.org>,
DEVICE TREE <devicetree@...r.kernel.org>,
Lee Jones <lee.jones@...aro.org>,
Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>,
Aaron Lu <aaron.lu@...el.com>, Alan Cox <alan@...ux.intel.com>,
Jean Delvare <khali@...ux-fr.org>,
Samuel Ortiz <sameo@...ux.intel.com>,
Liam Girdwood <lgirdwood@...il.com>,
Mark Brown <broonie@...nel.org>,
Grant Likely <grant.likely@...aro.org>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Rob Herring <robh+dt@...nel.org>,
Lars-Peter Clausen <lars@...afoo.de>,
Hartmut Knaack <knaack.h@....de>,
Fugang Duan <B38611@...escale.com>,
Arnd Bergmann <arnd@...db.de>,
Zubair Lutfullah <zubair.lutfullah@...il.com>,
Sebastian Reichel <sre@...ian.org>,
Johannes Thumshirn <johannes.thumshirn@....de>,
Philippe Reynes <tremyfr@...oo.fr>,
Angelo Compagnucci <angelo.compagnucci@...il.com>,
Doug Anderson <dianders@...omium.org>
Subject: Re: [PATCH 2/4] mfd/axp2xx: extend axp20x to support axp288 pmic
On Tue, 9 Sep 2014 09:37:47 +0200
Maxime Ripard <maxime.ripard@...e-electrons.com> wrote:
> Hi Jacob,
>
> I think it would have been nice to have CC'd Carlo Caione, the
> original writer of the driver on this.
>
yes, i realized that after sending them out, so i sent him an email
instead. run get_maintainers.pl gave me a long list but missing carlo.
will be on the next rev.
> 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@...ux.intel.com>
> > ---
> > 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 :)
>
agreed. perhaps just a generic description of functionalities here.
> > * Author: Carlo Caione <carlo@...one.org>
> > *
> > * 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.
>
I am not sure what you mean. if acpi_id == NULL, then it will return
-ENODEV since of_match_device() already found no match. If acpi_id !=
NULL, then id must contain variant info.
> > +
> > +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@...one.org>");
> > 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?
>
Yes, agreed.
Thanks for the review.
> Thanks!
> Maxime
>
[Jacob Pan]
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