linux/drivers/mfd/tps65086.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

142 lines
3.8 KiB
C

// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (C) 2015 Texas Instruments Incorporated - https://www.ti.com/
* Andrew F. Davis <afd@ti.com>
*
* Based on the TPS65912 driver
*/
#include <linux/i2c.h>
#include <linux/interrupt.h>
#include <linux/mfd/core.h>
#include <linux/module.h>
#include <linux/mfd/tps65086.h>
static const struct mfd_cell tps65086_cells[] = {
{ .name = "tps65086-regulator", },
{ .name = "tps65086-gpio", },
{ .name = "tps65086-reset", },
};
static const struct regmap_range tps65086_yes_ranges[] = {
regmap_reg_range(TPS65086_IRQ, TPS65086_IRQ),
regmap_reg_range(TPS65086_PMICSTAT, TPS65086_SHUTDNSRC),
regmap_reg_range(TPS65086_GPOCTRL, TPS65086_GPOCTRL),
regmap_reg_range(TPS65086_PG_STATUS1, TPS65086_OC_STATUS),
};
static const struct regmap_access_table tps65086_volatile_table = {
.yes_ranges = tps65086_yes_ranges,
.n_yes_ranges = ARRAY_SIZE(tps65086_yes_ranges),
};
static const struct regmap_config tps65086_regmap_config = {
.reg_bits = 8,
.val_bits = 8,
.cache_type = REGCACHE_RBTREE,
.volatile_table = &tps65086_volatile_table,
};
static const struct regmap_irq tps65086_irqs[] = {
REGMAP_IRQ_REG(TPS65086_IRQ_DIETEMP, 0, TPS65086_IRQ_DIETEMP_MASK),
REGMAP_IRQ_REG(TPS65086_IRQ_SHUTDN, 0, TPS65086_IRQ_SHUTDN_MASK),
REGMAP_IRQ_REG(TPS65086_IRQ_FAULT, 0, TPS65086_IRQ_FAULT_MASK),
};
static struct regmap_irq_chip tps65086_irq_chip = {
.name = "tps65086",
.status_base = TPS65086_IRQ,
.mask_base = TPS65086_IRQ_MASK,
.ack_base = TPS65086_IRQ,
.init_ack_masked = true,
.num_regs = 1,
.irqs = tps65086_irqs,
.num_irqs = ARRAY_SIZE(tps65086_irqs),
};
static const struct of_device_id tps65086_of_match_table[] = {
{ .compatible = "ti,tps65086", },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, tps65086_of_match_table);
static int tps65086_probe(struct i2c_client *client,
const struct i2c_device_id *ids)
{
struct tps65086 *tps;
unsigned int version;
int ret;
tps = devm_kzalloc(&client->dev, sizeof(*tps), GFP_KERNEL);
if (!tps)
return -ENOMEM;
i2c_set_clientdata(client, tps);
tps->dev = &client->dev;
tps->irq = client->irq;
tps->regmap = devm_regmap_init_i2c(client, &tps65086_regmap_config);
if (IS_ERR(tps->regmap)) {
dev_err(tps->dev, "Failed to initialize register map\n");
return PTR_ERR(tps->regmap);
}
ret = regmap_read(tps->regmap, TPS65086_DEVICEID, &version);
if (ret) {
dev_err(tps->dev, "Failed to read revision register\n");
return ret;
}
dev_info(tps->dev, "Device: TPS65086%01lX, OTP: %c, Rev: %ld\n",
(version & TPS65086_DEVICEID_PART_MASK),
(char)((version & TPS65086_DEVICEID_OTP_MASK) >> 4) + 'A',
(version & TPS65086_DEVICEID_REV_MASK) >> 6);
if (tps->irq > 0) {
ret = regmap_add_irq_chip(tps->regmap, tps->irq, IRQF_ONESHOT, 0,
&tps65086_irq_chip, &tps->irq_data);
if (ret) {
dev_err(tps->dev, "Failed to register IRQ chip\n");
return ret;
}
}
ret = mfd_add_devices(tps->dev, PLATFORM_DEVID_AUTO, tps65086_cells,
ARRAY_SIZE(tps65086_cells), NULL, 0,
regmap_irq_get_domain(tps->irq_data));
if (ret && tps->irq > 0)
regmap_del_irq_chip(tps->irq, tps->irq_data);
return ret;
}
static void tps65086_remove(struct i2c_client *client)
{
struct tps65086 *tps = i2c_get_clientdata(client);
if (tps->irq > 0)
regmap_del_irq_chip(tps->irq, tps->irq_data);
}
static const struct i2c_device_id tps65086_id_table[] = {
{ "tps65086", 0 },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(i2c, tps65086_id_table);
static struct i2c_driver tps65086_driver = {
.driver = {
.name = "tps65086",
.of_match_table = tps65086_of_match_table,
},
.probe = tps65086_probe,
.remove = tps65086_remove,
.id_table = tps65086_id_table,
};
module_i2c_driver(tps65086_driver);
MODULE_AUTHOR("Andrew F. Davis <afd@ti.com>");
MODULE_DESCRIPTION("TPS65086 PMIC Driver");
MODULE_LICENSE("GPL v2");