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linux/drivers/mfd/palmas.c
Uwe Kleine-König ed5c2f5fd1 i2c: Make remove callback return void 
The value returned by an i2c driver's remove function is mostly ignored.
(Only an error message is printed if the value is non-zero that the
error is ignored.)

So change the prototype of the remove function to return no value. This
way driver authors are not tempted to assume that passing an error to
the upper layer is a good idea. All drivers are adapted accordingly.
There is no intended change of behaviour, all callbacks were prepared to
return 0 before.

Reviewed-by: Peter Senna Tschudin <peter.senna@gmail.com>
Reviewed-by: Jeremy Kerr <jk@codeconstruct.com.au>
Reviewed-by: Benjamin Mugnier <benjamin.mugnier@foss.st.com>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Reviewed-by: Crt Mori <cmo@melexis.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Marek Behún <kabel@kernel.org> # for leds-turris-omnia
Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Petr Machata <petrm@nvidia.com> # for mlxsw
Reviewed-by: Maximilian Luz <luzmaximilian@gmail.com> # for surface3_power
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> # for bmc150-accel-i2c + kxcjk-1013
Reviewed-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> # for media/* + staging/media/*
Acked-by: Miguel Ojeda <ojeda@kernel.org> # for auxdisplay/ht16k33 + auxdisplay/lcd2s
Reviewed-by: Luca Ceresoli <luca.ceresoli@bootlin.com> # for versaclock5
Reviewed-by: Ajay Gupta <ajayg@nvidia.com> # for ucsi_ccg
Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> # for iio
Acked-by: Peter Rosin <peda@axentia.se> # for i2c-mux-*, max9860
Acked-by: Adrien Grassein <adrien.grassein@gmail.com> # for lontium-lt8912b
Reviewed-by: Jean Delvare <jdelvare@suse.de> # for hwmon, i2c-core and i2c/muxes
Acked-by: Corey Minyard <cminyard@mvista.com> # for IPMI
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Acked-by: Sebastian Reichel <sebastian.reichel@collabora.com> # for drivers/power
Acked-by: Krzysztof Hałasa <khalasa@piap.pl>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
2022-08-16 12:46:26 +02:00

756 lines
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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* TI Palmas MFD Driver
*
* Copyright 2011-2012 Texas Instruments Inc.
*
* Author: Graeme Gregory <gg@slimlogic.co.uk>
*/
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/i2c.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/regmap.h>
#include <linux/err.h>
#include <linux/mfd/core.h>
#include <linux/mfd/palmas.h>
#include <linux/of_device.h>
static const struct regmap_config palmas_regmap_config[PALMAS_NUM_CLIENTS] = {
{
.reg_bits = 8,
.val_bits = 8,
.max_register = PALMAS_BASE_TO_REG(PALMAS_PU_PD_OD_BASE,
PALMAS_PRIMARY_SECONDARY_PAD3),
},
{
.reg_bits = 8,
.val_bits = 8,
.max_register = PALMAS_BASE_TO_REG(PALMAS_GPADC_BASE,
PALMAS_GPADC_SMPS_VSEL_MONITORING),
},
{
.reg_bits = 8,
.val_bits = 8,
.max_register = PALMAS_BASE_TO_REG(PALMAS_TRIM_GPADC_BASE,
PALMAS_GPADC_TRIM16),
},
};
static const struct regmap_irq tps65917_irqs[] = {
/* INT1 IRQs */
[TPS65917_RESERVED1] = {
.mask = TPS65917_RESERVED,
},
[TPS65917_PWRON_IRQ] = {
.mask = TPS65917_INT1_STATUS_PWRON,
},
[TPS65917_LONG_PRESS_KEY_IRQ] = {
.mask = TPS65917_INT1_STATUS_LONG_PRESS_KEY,
},
[TPS65917_RESERVED2] = {
.mask = TPS65917_RESERVED,
},
[TPS65917_PWRDOWN_IRQ] = {
.mask = TPS65917_INT1_STATUS_PWRDOWN,
},
[TPS65917_HOTDIE_IRQ] = {
.mask = TPS65917_INT1_STATUS_HOTDIE,
},
[TPS65917_VSYS_MON_IRQ] = {
.mask = TPS65917_INT1_STATUS_VSYS_MON,
},
[TPS65917_RESERVED3] = {
.mask = TPS65917_RESERVED,
},
/* INT2 IRQs*/
[TPS65917_RESERVED4] = {
.mask = TPS65917_RESERVED,
.reg_offset = 1,
},
[TPS65917_OTP_ERROR_IRQ] = {
.mask = TPS65917_INT2_STATUS_OTP_ERROR,
.reg_offset = 1,
},
[TPS65917_WDT_IRQ] = {
.mask = TPS65917_INT2_STATUS_WDT,
.reg_offset = 1,
},
[TPS65917_RESERVED5] = {
.mask = TPS65917_RESERVED,
.reg_offset = 1,
},
[TPS65917_RESET_IN_IRQ] = {
.mask = TPS65917_INT2_STATUS_RESET_IN,
.reg_offset = 1,
},
[TPS65917_FSD_IRQ] = {
.mask = TPS65917_INT2_STATUS_FSD,
.reg_offset = 1,
},
[TPS65917_SHORT_IRQ] = {
.mask = TPS65917_INT2_STATUS_SHORT,
.reg_offset = 1,
},
[TPS65917_RESERVED6] = {
.mask = TPS65917_RESERVED,
.reg_offset = 1,
},
/* INT3 IRQs */
[TPS65917_GPADC_AUTO_0_IRQ] = {
.mask = TPS65917_INT3_STATUS_GPADC_AUTO_0,
.reg_offset = 2,
},
[TPS65917_GPADC_AUTO_1_IRQ] = {
.mask = TPS65917_INT3_STATUS_GPADC_AUTO_1,
.reg_offset = 2,
},
[TPS65917_GPADC_EOC_SW_IRQ] = {
.mask = TPS65917_INT3_STATUS_GPADC_EOC_SW,
.reg_offset = 2,
},
[TPS65917_RESREVED6] = {
.mask = TPS65917_RESERVED6,
.reg_offset = 2,
},
[TPS65917_RESERVED7] = {
.mask = TPS65917_RESERVED,
.reg_offset = 2,
},
[TPS65917_RESERVED8] = {
.mask = TPS65917_RESERVED,
.reg_offset = 2,
},
[TPS65917_RESERVED9] = {
.mask = TPS65917_RESERVED,
.reg_offset = 2,
},
[TPS65917_VBUS_IRQ] = {
.mask = TPS65917_INT3_STATUS_VBUS,
.reg_offset = 2,
},
/* INT4 IRQs */
[TPS65917_GPIO_0_IRQ] = {
.mask = TPS65917_INT4_STATUS_GPIO_0,
.reg_offset = 3,
},
[TPS65917_GPIO_1_IRQ] = {
.mask = TPS65917_INT4_STATUS_GPIO_1,
.reg_offset = 3,
},
[TPS65917_GPIO_2_IRQ] = {
.mask = TPS65917_INT4_STATUS_GPIO_2,
.reg_offset = 3,
},
[TPS65917_GPIO_3_IRQ] = {
.mask = TPS65917_INT4_STATUS_GPIO_3,
.reg_offset = 3,
},
[TPS65917_GPIO_4_IRQ] = {
.mask = TPS65917_INT4_STATUS_GPIO_4,
.reg_offset = 3,
},
[TPS65917_GPIO_5_IRQ] = {
.mask = TPS65917_INT4_STATUS_GPIO_5,
.reg_offset = 3,
},
[TPS65917_GPIO_6_IRQ] = {
.mask = TPS65917_INT4_STATUS_GPIO_6,
.reg_offset = 3,
},
[TPS65917_RESERVED10] = {
.mask = TPS65917_RESERVED10,
.reg_offset = 3,
},
};
static const struct regmap_irq palmas_irqs[] = {
/* INT1 IRQs */
[PALMAS_CHARG_DET_N_VBUS_OVV_IRQ] = {
.mask = PALMAS_INT1_STATUS_CHARG_DET_N_VBUS_OVV,
},
[PALMAS_PWRON_IRQ] = {
.mask = PALMAS_INT1_STATUS_PWRON,
},
[PALMAS_LONG_PRESS_KEY_IRQ] = {
.mask = PALMAS_INT1_STATUS_LONG_PRESS_KEY,
},
[PALMAS_RPWRON_IRQ] = {
.mask = PALMAS_INT1_STATUS_RPWRON,
},
[PALMAS_PWRDOWN_IRQ] = {
.mask = PALMAS_INT1_STATUS_PWRDOWN,
},
[PALMAS_HOTDIE_IRQ] = {
.mask = PALMAS_INT1_STATUS_HOTDIE,
},
[PALMAS_VSYS_MON_IRQ] = {
.mask = PALMAS_INT1_STATUS_VSYS_MON,
},
[PALMAS_VBAT_MON_IRQ] = {
.mask = PALMAS_INT1_STATUS_VBAT_MON,
},
/* INT2 IRQs*/
[PALMAS_RTC_ALARM_IRQ] = {
.mask = PALMAS_INT2_STATUS_RTC_ALARM,
.reg_offset = 1,
},
[PALMAS_RTC_TIMER_IRQ] = {
.mask = PALMAS_INT2_STATUS_RTC_TIMER,
.reg_offset = 1,
},
[PALMAS_WDT_IRQ] = {
.mask = PALMAS_INT2_STATUS_WDT,
.reg_offset = 1,
},
[PALMAS_BATREMOVAL_IRQ] = {
.mask = PALMAS_INT2_STATUS_BATREMOVAL,
.reg_offset = 1,
},
[PALMAS_RESET_IN_IRQ] = {
.mask = PALMAS_INT2_STATUS_RESET_IN,
.reg_offset = 1,
},
[PALMAS_FBI_BB_IRQ] = {
.mask = PALMAS_INT2_STATUS_FBI_BB,
.reg_offset = 1,
},
[PALMAS_SHORT_IRQ] = {
.mask = PALMAS_INT2_STATUS_SHORT,
.reg_offset = 1,
},
[PALMAS_VAC_ACOK_IRQ] = {
.mask = PALMAS_INT2_STATUS_VAC_ACOK,
.reg_offset = 1,
},
/* INT3 IRQs */
[PALMAS_GPADC_AUTO_0_IRQ] = {
.mask = PALMAS_INT3_STATUS_GPADC_AUTO_0,
.reg_offset = 2,
},
[PALMAS_GPADC_AUTO_1_IRQ] = {
.mask = PALMAS_INT3_STATUS_GPADC_AUTO_1,
.reg_offset = 2,
},
[PALMAS_GPADC_EOC_SW_IRQ] = {
.mask = PALMAS_INT3_STATUS_GPADC_EOC_SW,
.reg_offset = 2,
},
[PALMAS_GPADC_EOC_RT_IRQ] = {
.mask = PALMAS_INT3_STATUS_GPADC_EOC_RT,
.reg_offset = 2,
},
[PALMAS_ID_OTG_IRQ] = {
.mask = PALMAS_INT3_STATUS_ID_OTG,
.reg_offset = 2,
},
[PALMAS_ID_IRQ] = {
.mask = PALMAS_INT3_STATUS_ID,
.reg_offset = 2,
},
[PALMAS_VBUS_OTG_IRQ] = {
.mask = PALMAS_INT3_STATUS_VBUS_OTG,
.reg_offset = 2,
},
[PALMAS_VBUS_IRQ] = {
.mask = PALMAS_INT3_STATUS_VBUS,
.reg_offset = 2,
},
/* INT4 IRQs */
[PALMAS_GPIO_0_IRQ] = {
.mask = PALMAS_INT4_STATUS_GPIO_0,
.reg_offset = 3,
},
[PALMAS_GPIO_1_IRQ] = {
.mask = PALMAS_INT4_STATUS_GPIO_1,
.reg_offset = 3,
},
[PALMAS_GPIO_2_IRQ] = {
.mask = PALMAS_INT4_STATUS_GPIO_2,
.reg_offset = 3,
},
[PALMAS_GPIO_3_IRQ] = {
.mask = PALMAS_INT4_STATUS_GPIO_3,
.reg_offset = 3,
},
[PALMAS_GPIO_4_IRQ] = {
.mask = PALMAS_INT4_STATUS_GPIO_4,
.reg_offset = 3,
},
[PALMAS_GPIO_5_IRQ] = {
.mask = PALMAS_INT4_STATUS_GPIO_5,
.reg_offset = 3,
},
[PALMAS_GPIO_6_IRQ] = {
.mask = PALMAS_INT4_STATUS_GPIO_6,
.reg_offset = 3,
},
[PALMAS_GPIO_7_IRQ] = {
.mask = PALMAS_INT4_STATUS_GPIO_7,
.reg_offset = 3,
},
};
static struct regmap_irq_chip palmas_irq_chip = {
.name = "palmas",
.irqs = palmas_irqs,
.num_irqs = ARRAY_SIZE(palmas_irqs),
.num_regs = 4,
.irq_reg_stride = 5,
.status_base = PALMAS_BASE_TO_REG(PALMAS_INTERRUPT_BASE,
PALMAS_INT1_STATUS),
.mask_base = PALMAS_BASE_TO_REG(PALMAS_INTERRUPT_BASE,
PALMAS_INT1_MASK),
};
static struct regmap_irq_chip tps65917_irq_chip = {
.name = "tps65917",
.irqs = tps65917_irqs,
.num_irqs = ARRAY_SIZE(tps65917_irqs),
.num_regs = 4,
.irq_reg_stride = 5,
.status_base = PALMAS_BASE_TO_REG(PALMAS_INTERRUPT_BASE,
PALMAS_INT1_STATUS),
.mask_base = PALMAS_BASE_TO_REG(PALMAS_INTERRUPT_BASE,
PALMAS_INT1_MASK),
};
int palmas_ext_control_req_config(struct palmas *palmas,
enum palmas_external_requestor_id id, int ext_ctrl, bool enable)
{
struct palmas_pmic_driver_data *pmic_ddata = palmas->pmic_ddata;
int preq_mask_bit = 0;
int reg_add = 0;
int bit_pos, ret;
if (!(ext_ctrl & PALMAS_EXT_REQ))
return 0;
if (id >= PALMAS_EXTERNAL_REQSTR_ID_MAX)
return 0;
if (ext_ctrl & PALMAS_EXT_CONTROL_NSLEEP) {
reg_add = PALMAS_NSLEEP_RES_ASSIGN;
preq_mask_bit = 0;
} else if (ext_ctrl & PALMAS_EXT_CONTROL_ENABLE1) {
reg_add = PALMAS_ENABLE1_RES_ASSIGN;
preq_mask_bit = 1;
} else if (ext_ctrl & PALMAS_EXT_CONTROL_ENABLE2) {
reg_add = PALMAS_ENABLE2_RES_ASSIGN;
preq_mask_bit = 2;
}
bit_pos = pmic_ddata->sleep_req_info[id].bit_pos;
reg_add += pmic_ddata->sleep_req_info[id].reg_offset;
if (enable)
ret = palmas_update_bits(palmas, PALMAS_RESOURCE_BASE,
reg_add, BIT(bit_pos), BIT(bit_pos));
else
ret = palmas_update_bits(palmas, PALMAS_RESOURCE_BASE,
reg_add, BIT(bit_pos), 0);
if (ret < 0) {
dev_err(palmas->dev, "Resource reg 0x%02x update failed %d\n",
reg_add, ret);
return ret;
}
/* Unmask the PREQ */
ret = palmas_update_bits(palmas, PALMAS_PMU_CONTROL_BASE,
PALMAS_POWER_CTRL, BIT(preq_mask_bit), 0);
if (ret < 0) {
dev_err(palmas->dev, "POWER_CTRL register update failed %d\n",
ret);
return ret;
}
return ret;
}
EXPORT_SYMBOL_GPL(palmas_ext_control_req_config);
static int palmas_set_pdata_irq_flag(struct i2c_client *i2c,
struct palmas_platform_data *pdata)
{
struct irq_data *irq_data = irq_get_irq_data(i2c->irq);
if (!irq_data) {
dev_err(&i2c->dev, "Invalid IRQ: %d\n", i2c->irq);
return -EINVAL;
}
pdata->irq_flags = irqd_get_trigger_type(irq_data);
dev_info(&i2c->dev, "Irq flag is 0x%08x\n", pdata->irq_flags);
return 0;
}
static void palmas_dt_to_pdata(struct i2c_client *i2c,
struct palmas_platform_data *pdata)
{
struct device_node *node = i2c->dev.of_node;
int ret;
u32 prop;
ret = of_property_read_u32(node, "ti,mux-pad1", &prop);
if (!ret) {
pdata->mux_from_pdata = 1;
pdata->pad1 = prop;
}
ret = of_property_read_u32(node, "ti,mux-pad2", &prop);
if (!ret) {
pdata->mux_from_pdata = 1;
pdata->pad2 = prop;
}
/* The default for this register is all masked */
ret = of_property_read_u32(node, "ti,power-ctrl", &prop);
if (!ret)
pdata->power_ctrl = prop;
else
pdata->power_ctrl = PALMAS_POWER_CTRL_NSLEEP_MASK |
PALMAS_POWER_CTRL_ENABLE1_MASK |
PALMAS_POWER_CTRL_ENABLE2_MASK;
if (i2c->irq)
palmas_set_pdata_irq_flag(i2c, pdata);
pdata->pm_off = of_property_read_bool(node,
"ti,system-power-controller");
}
static struct palmas *palmas_dev;
static void palmas_power_off(void)
{
unsigned int addr;
int ret, slave;
u8 powerhold_mask;
struct device_node *np = palmas_dev->dev->of_node;
if (of_property_read_bool(np, "ti,palmas-override-powerhold")) {
addr = PALMAS_BASE_TO_REG(PALMAS_PU_PD_OD_BASE,
PALMAS_PRIMARY_SECONDARY_PAD2);
slave = PALMAS_BASE_TO_SLAVE(PALMAS_PU_PD_OD_BASE);
if (of_device_is_compatible(np, "ti,tps65917"))
powerhold_mask =
TPS65917_PRIMARY_SECONDARY_PAD2_GPIO_5_MASK;
else
powerhold_mask =
PALMAS_PRIMARY_SECONDARY_PAD2_GPIO_7_MASK;
ret = regmap_update_bits(palmas_dev->regmap[slave], addr,
powerhold_mask, 0);
if (ret)
dev_err(palmas_dev->dev,
"Unable to write PRIMARY_SECONDARY_PAD2 %d\n",
ret);
}
slave = PALMAS_BASE_TO_SLAVE(PALMAS_PMU_CONTROL_BASE);
addr = PALMAS_BASE_TO_REG(PALMAS_PMU_CONTROL_BASE, PALMAS_DEV_CTRL);
ret = regmap_update_bits(
palmas_dev->regmap[slave],
addr,
PALMAS_DEV_CTRL_DEV_ON,
0);
if (ret)
pr_err("%s: Unable to write to DEV_CTRL_DEV_ON: %d\n",
__func__, ret);
}
static unsigned int palmas_features = PALMAS_PMIC_FEATURE_SMPS10_BOOST;
static unsigned int tps659038_features;
struct palmas_driver_data {
unsigned int *features;
struct regmap_irq_chip *irq_chip;
};
static struct palmas_driver_data palmas_data = {
.features = &palmas_features,
.irq_chip = &palmas_irq_chip,
};
static struct palmas_driver_data tps659038_data = {
.features = &tps659038_features,
.irq_chip = &palmas_irq_chip,
};
static struct palmas_driver_data tps65917_data = {
.features = &tps659038_features,
.irq_chip = &tps65917_irq_chip,
};
static const struct of_device_id of_palmas_match_tbl[] = {
{
.compatible = "ti,palmas",
.data = &palmas_data,
},
{
.compatible = "ti,tps659038",
.data = &tps659038_data,
},
{
.compatible = "ti,tps65917",
.data = &tps65917_data,
},
{ },
};
MODULE_DEVICE_TABLE(of, of_palmas_match_tbl);
static int palmas_i2c_probe(struct i2c_client *i2c,
const struct i2c_device_id *id)
{
struct palmas *palmas;
struct palmas_platform_data *pdata;
struct palmas_driver_data *driver_data;
struct device_node *node = i2c->dev.of_node;
int ret = 0, i;
unsigned int reg, addr;
int slave;
const struct of_device_id *match;
pdata = dev_get_platdata(&i2c->dev);
if (node && !pdata) {
pdata = devm_kzalloc(&i2c->dev, sizeof(*pdata), GFP_KERNEL);
if (!pdata)
return -ENOMEM;
palmas_dt_to_pdata(i2c, pdata);
}
if (!pdata)
return -EINVAL;
palmas = devm_kzalloc(&i2c->dev, sizeof(struct palmas), GFP_KERNEL);
if (palmas == NULL)
return -ENOMEM;
i2c_set_clientdata(i2c, palmas);
palmas->dev = &i2c->dev;
palmas->irq = i2c->irq;
match = of_match_device(of_palmas_match_tbl, &i2c->dev);
if (!match)
return -ENODATA;
driver_data = (struct palmas_driver_data *)match->data;
palmas->features = *driver_data->features;
for (i = 0; i < PALMAS_NUM_CLIENTS; i++) {
if (i == 0)
palmas->i2c_clients[i] = i2c;
else {
palmas->i2c_clients[i] =
i2c_new_dummy_device(i2c->adapter,
i2c->addr + i);
if (IS_ERR(palmas->i2c_clients[i])) {
dev_err(palmas->dev,
"can't attach client %d\n", i);
ret = PTR_ERR(palmas->i2c_clients[i]);
goto err_i2c;
}
palmas->i2c_clients[i]->dev.of_node = of_node_get(node);
}
palmas->regmap[i] = devm_regmap_init_i2c(palmas->i2c_clients[i],
&palmas_regmap_config[i]);
if (IS_ERR(palmas->regmap[i])) {
ret = PTR_ERR(palmas->regmap[i]);
dev_err(palmas->dev,
"Failed to allocate regmap %d, err: %d\n",
i, ret);
goto err_i2c;
}
}
if (!palmas->irq) {
dev_warn(palmas->dev, "IRQ missing: skipping irq request\n");
goto no_irq;
}
/* Change interrupt line output polarity */
if (pdata->irq_flags & IRQ_TYPE_LEVEL_HIGH)
reg = PALMAS_POLARITY_CTRL_INT_POLARITY;
else
reg = 0;
ret = palmas_update_bits(palmas, PALMAS_PU_PD_OD_BASE,
PALMAS_POLARITY_CTRL, PALMAS_POLARITY_CTRL_INT_POLARITY,
reg);
if (ret < 0) {
dev_err(palmas->dev, "POLARITY_CTRL update failed: %d\n", ret);
goto err_i2c;
}
/* Change IRQ into clear on read mode for efficiency */
slave = PALMAS_BASE_TO_SLAVE(PALMAS_INTERRUPT_BASE);
addr = PALMAS_BASE_TO_REG(PALMAS_INTERRUPT_BASE, PALMAS_INT_CTRL);
reg = PALMAS_INT_CTRL_INT_CLEAR;
regmap_write(palmas->regmap[slave], addr, reg);
ret = regmap_add_irq_chip(palmas->regmap[slave], palmas->irq,
IRQF_ONESHOT | pdata->irq_flags, 0,
driver_data->irq_chip, &palmas->irq_data);
if (ret < 0)
goto err_i2c;
no_irq:
slave = PALMAS_BASE_TO_SLAVE(PALMAS_PU_PD_OD_BASE);
addr = PALMAS_BASE_TO_REG(PALMAS_PU_PD_OD_BASE,
PALMAS_PRIMARY_SECONDARY_PAD1);
if (pdata->mux_from_pdata) {
reg = pdata->pad1;
ret = regmap_write(palmas->regmap[slave], addr, reg);
if (ret)
goto err_irq;
} else {
ret = regmap_read(palmas->regmap[slave], addr, &reg);
if (ret)
goto err_irq;
}
if (!(reg & PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_0))
palmas->gpio_muxed |= PALMAS_GPIO_0_MUXED;
if (!(reg & PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_1_MASK))
palmas->gpio_muxed |= PALMAS_GPIO_1_MUXED;
else if ((reg & PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_1_MASK) ==
(2 << PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_1_SHIFT))
palmas->led_muxed |= PALMAS_LED1_MUXED;
else if ((reg & PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_1_MASK) ==
(3 << PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_1_SHIFT))
palmas->pwm_muxed |= PALMAS_PWM1_MUXED;
if (!(reg & PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_2_MASK))
palmas->gpio_muxed |= PALMAS_GPIO_2_MUXED;
else if ((reg & PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_2_MASK) ==
(2 << PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_2_SHIFT))
palmas->led_muxed |= PALMAS_LED2_MUXED;
else if ((reg & PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_2_MASK) ==
(3 << PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_2_SHIFT))
palmas->pwm_muxed |= PALMAS_PWM2_MUXED;
if (!(reg & PALMAS_PRIMARY_SECONDARY_PAD1_GPIO_3))
palmas->gpio_muxed |= PALMAS_GPIO_3_MUXED;
addr = PALMAS_BASE_TO_REG(PALMAS_PU_PD_OD_BASE,
PALMAS_PRIMARY_SECONDARY_PAD2);
if (pdata->mux_from_pdata) {
reg = pdata->pad2;
ret = regmap_write(palmas->regmap[slave], addr, reg);
if (ret)
goto err_irq;
} else {
ret = regmap_read(palmas->regmap[slave], addr, &reg);
if (ret)
goto err_irq;
}
if (!(reg & PALMAS_PRIMARY_SECONDARY_PAD2_GPIO_4))
palmas->gpio_muxed |= PALMAS_GPIO_4_MUXED;
if (!(reg & PALMAS_PRIMARY_SECONDARY_PAD2_GPIO_5_MASK))
palmas->gpio_muxed |= PALMAS_GPIO_5_MUXED;
if (!(reg & PALMAS_PRIMARY_SECONDARY_PAD2_GPIO_6))
palmas->gpio_muxed |= PALMAS_GPIO_6_MUXED;
if (!(reg & PALMAS_PRIMARY_SECONDARY_PAD2_GPIO_7_MASK))
palmas->gpio_muxed |= PALMAS_GPIO_7_MUXED;
dev_info(palmas->dev, "Muxing GPIO %x, PWM %x, LED %x\n",
palmas->gpio_muxed, palmas->pwm_muxed,
palmas->led_muxed);
reg = pdata->power_ctrl;
slave = PALMAS_BASE_TO_SLAVE(PALMAS_PMU_CONTROL_BASE);
addr = PALMAS_BASE_TO_REG(PALMAS_PMU_CONTROL_BASE, PALMAS_POWER_CTRL);
ret = regmap_write(palmas->regmap[slave], addr, reg);
if (ret)
goto err_irq;
/*
* If we are probing with DT do this the DT way and return here
* otherwise continue and add devices using mfd helpers.
*/
if (node) {
ret = devm_of_platform_populate(&i2c->dev);
if (ret < 0) {
goto err_irq;
} else if (pdata->pm_off && !pm_power_off) {
palmas_dev = palmas;
pm_power_off = palmas_power_off;
}
}
return ret;
err_irq:
regmap_del_irq_chip(palmas->irq, palmas->irq_data);
err_i2c:
for (i = 1; i < PALMAS_NUM_CLIENTS; i++) {
if (palmas->i2c_clients[i])
i2c_unregister_device(palmas->i2c_clients[i]);
}
return ret;
}
static void palmas_i2c_remove(struct i2c_client *i2c)
{
struct palmas *palmas = i2c_get_clientdata(i2c);
int i;
regmap_del_irq_chip(palmas->irq, palmas->irq_data);
for (i = 1; i < PALMAS_NUM_CLIENTS; i++) {
if (palmas->i2c_clients[i])
i2c_unregister_device(palmas->i2c_clients[i]);
}
if (palmas == palmas_dev) {
pm_power_off = NULL;
palmas_dev = NULL;
}
}
static const struct i2c_device_id palmas_i2c_id[] = {
{ "palmas", },
{ "twl6035", },
{ "twl6037", },
{ "tps65913", },
{ /* end */ }
};
MODULE_DEVICE_TABLE(i2c, palmas_i2c_id);
static struct i2c_driver palmas_i2c_driver = {
.driver = {
.name = "palmas",
.of_match_table = of_palmas_match_tbl,
},
.probe = palmas_i2c_probe,
.remove = palmas_i2c_remove,
.id_table = palmas_i2c_id,
};
static int __init palmas_i2c_init(void)
{
return i2c_add_driver(&palmas_i2c_driver);
}
/* init early so consumer devices can complete system boot */
subsys_initcall(palmas_i2c_init);
static void __exit palmas_i2c_exit(void)
{
i2c_del_driver(&palmas_i2c_driver);
}
module_exit(palmas_i2c_exit);
MODULE_AUTHOR("Graeme Gregory <gg@slimlogic.co.uk>");
MODULE_DESCRIPTION("Palmas chip family multi-function driver");
MODULE_LICENSE("GPL");
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