WSL2-Linux-Kernel/drivers/mfd/88pm800.c

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C
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/*
* Base driver for Marvell 88PM800
*
* Copyright (C) 2012 Marvell International Ltd.
* Haojian Zhuang <haojian.zhuang@marvell.com>
* Joseph(Yossi) Hanin <yhanin@marvell.com>
* Qiao Zhou <zhouqiao@marvell.com>
*
* This file is subject to the terms and conditions of the GNU General
* Public License. See the file "COPYING" in the main directory of this
* archive for more details.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/err.h>
#include <linux/i2c.h>
#include <linux/mfd/core.h>
#include <linux/mfd/88pm80x.h>
#include <linux/slab.h>
/* Interrupt Registers */
#define PM800_INT_STATUS1 (0x05)
#define PM800_ONKEY_INT_STS1 (1 << 0)
#define PM800_EXTON_INT_STS1 (1 << 1)
#define PM800_CHG_INT_STS1 (1 << 2)
#define PM800_BAT_INT_STS1 (1 << 3)
#define PM800_RTC_INT_STS1 (1 << 4)
#define PM800_CLASSD_OC_INT_STS1 (1 << 5)
#define PM800_INT_STATUS2 (0x06)
#define PM800_VBAT_INT_STS2 (1 << 0)
#define PM800_VSYS_INT_STS2 (1 << 1)
#define PM800_VCHG_INT_STS2 (1 << 2)
#define PM800_TINT_INT_STS2 (1 << 3)
#define PM800_GPADC0_INT_STS2 (1 << 4)
#define PM800_TBAT_INT_STS2 (1 << 5)
#define PM800_GPADC2_INT_STS2 (1 << 6)
#define PM800_GPADC3_INT_STS2 (1 << 7)
#define PM800_INT_STATUS3 (0x07)
#define PM800_INT_STATUS4 (0x08)
#define PM800_GPIO0_INT_STS4 (1 << 0)
#define PM800_GPIO1_INT_STS4 (1 << 1)
#define PM800_GPIO2_INT_STS4 (1 << 2)
#define PM800_GPIO3_INT_STS4 (1 << 3)
#define PM800_GPIO4_INT_STS4 (1 << 4)
#define PM800_INT_ENA_1 (0x09)
#define PM800_ONKEY_INT_ENA1 (1 << 0)
#define PM800_EXTON_INT_ENA1 (1 << 1)
#define PM800_CHG_INT_ENA1 (1 << 2)
#define PM800_BAT_INT_ENA1 (1 << 3)
#define PM800_RTC_INT_ENA1 (1 << 4)
#define PM800_CLASSD_OC_INT_ENA1 (1 << 5)
#define PM800_INT_ENA_2 (0x0A)
#define PM800_VBAT_INT_ENA2 (1 << 0)
#define PM800_VSYS_INT_ENA2 (1 << 1)
#define PM800_VCHG_INT_ENA2 (1 << 2)
#define PM800_TINT_INT_ENA2 (1 << 3)
#define PM800_INT_ENA_3 (0x0B)
#define PM800_GPADC0_INT_ENA3 (1 << 0)
#define PM800_GPADC1_INT_ENA3 (1 << 1)
#define PM800_GPADC2_INT_ENA3 (1 << 2)
#define PM800_GPADC3_INT_ENA3 (1 << 3)
#define PM800_GPADC4_INT_ENA3 (1 << 4)
#define PM800_INT_ENA_4 (0x0C)
#define PM800_GPIO0_INT_ENA4 (1 << 0)
#define PM800_GPIO1_INT_ENA4 (1 << 1)
#define PM800_GPIO2_INT_ENA4 (1 << 2)
#define PM800_GPIO3_INT_ENA4 (1 << 3)
#define PM800_GPIO4_INT_ENA4 (1 << 4)
/* number of INT_ENA & INT_STATUS regs */
#define PM800_INT_REG_NUM (4)
/* Interrupt Number in 88PM800 */
enum {
PM800_IRQ_ONKEY, /*EN1b0 *//*0 */
PM800_IRQ_EXTON, /*EN1b1 */
PM800_IRQ_CHG, /*EN1b2 */
PM800_IRQ_BAT, /*EN1b3 */
PM800_IRQ_RTC, /*EN1b4 */
PM800_IRQ_CLASSD, /*EN1b5 *//*5 */
PM800_IRQ_VBAT, /*EN2b0 */
PM800_IRQ_VSYS, /*EN2b1 */
PM800_IRQ_VCHG, /*EN2b2 */
PM800_IRQ_TINT, /*EN2b3 */
PM800_IRQ_GPADC0, /*EN3b0 *//*10 */
PM800_IRQ_GPADC1, /*EN3b1 */
PM800_IRQ_GPADC2, /*EN3b2 */
PM800_IRQ_GPADC3, /*EN3b3 */
PM800_IRQ_GPADC4, /*EN3b4 */
PM800_IRQ_GPIO0, /*EN4b0 *//*15 */
PM800_IRQ_GPIO1, /*EN4b1 */
PM800_IRQ_GPIO2, /*EN4b2 */
PM800_IRQ_GPIO3, /*EN4b3 */
PM800_IRQ_GPIO4, /*EN4b4 *//*19 */
PM800_MAX_IRQ,
};
/* PM800: generation identification number */
#define PM800_CHIP_GEN_ID_NUM 0x3
static const struct i2c_device_id pm80x_id_table[] = {
{"88PM800", 0},
{} /* NULL terminated */
};
MODULE_DEVICE_TABLE(i2c, pm80x_id_table);
static const struct resource rtc_resources[] = {
DEFINE_RES_IRQ_NAMED(PM800_IRQ_RTC, "88pm80x-rtc"),
};
static struct mfd_cell rtc_devs[] = {
{
.name = "88pm80x-rtc",
.num_resources = ARRAY_SIZE(rtc_resources),
.resources = &rtc_resources[0],
.id = -1,
},
};
static struct resource onkey_resources[] = {
DEFINE_RES_IRQ_NAMED(PM800_IRQ_ONKEY, "88pm80x-onkey"),
};
static const struct mfd_cell onkey_devs[] = {
{
.name = "88pm80x-onkey",
.num_resources = 1,
.resources = &onkey_resources[0],
.id = -1,
},
};
static const struct mfd_cell regulator_devs[] = {
{
.name = "88pm80x-regulator",
.id = -1,
},
};
static const struct regmap_irq pm800_irqs[] = {
/* INT0 */
[PM800_IRQ_ONKEY] = {
.mask = PM800_ONKEY_INT_ENA1,
},
[PM800_IRQ_EXTON] = {
.mask = PM800_EXTON_INT_ENA1,
},
[PM800_IRQ_CHG] = {
.mask = PM800_CHG_INT_ENA1,
},
[PM800_IRQ_BAT] = {
.mask = PM800_BAT_INT_ENA1,
},
[PM800_IRQ_RTC] = {
.mask = PM800_RTC_INT_ENA1,
},
[PM800_IRQ_CLASSD] = {
.mask = PM800_CLASSD_OC_INT_ENA1,
},
/* INT1 */
[PM800_IRQ_VBAT] = {
.reg_offset = 1,
.mask = PM800_VBAT_INT_ENA2,
},
[PM800_IRQ_VSYS] = {
.reg_offset = 1,
.mask = PM800_VSYS_INT_ENA2,
},
[PM800_IRQ_VCHG] = {
.reg_offset = 1,
.mask = PM800_VCHG_INT_ENA2,
},
[PM800_IRQ_TINT] = {
.reg_offset = 1,
.mask = PM800_TINT_INT_ENA2,
},
/* INT2 */
[PM800_IRQ_GPADC0] = {
.reg_offset = 2,
.mask = PM800_GPADC0_INT_ENA3,
},
[PM800_IRQ_GPADC1] = {
.reg_offset = 2,
.mask = PM800_GPADC1_INT_ENA3,
},
[PM800_IRQ_GPADC2] = {
.reg_offset = 2,
.mask = PM800_GPADC2_INT_ENA3,
},
[PM800_IRQ_GPADC3] = {
.reg_offset = 2,
.mask = PM800_GPADC3_INT_ENA3,
},
[PM800_IRQ_GPADC4] = {
.reg_offset = 2,
.mask = PM800_GPADC4_INT_ENA3,
},
/* INT3 */
[PM800_IRQ_GPIO0] = {
.reg_offset = 3,
.mask = PM800_GPIO0_INT_ENA4,
},
[PM800_IRQ_GPIO1] = {
.reg_offset = 3,
.mask = PM800_GPIO1_INT_ENA4,
},
[PM800_IRQ_GPIO2] = {
.reg_offset = 3,
.mask = PM800_GPIO2_INT_ENA4,
},
[PM800_IRQ_GPIO3] = {
.reg_offset = 3,
.mask = PM800_GPIO3_INT_ENA4,
},
[PM800_IRQ_GPIO4] = {
.reg_offset = 3,
.mask = PM800_GPIO4_INT_ENA4,
},
};
static int device_gpadc_init(struct pm80x_chip *chip,
struct pm80x_platform_data *pdata)
{
struct pm80x_subchip *subchip = chip->subchip;
struct regmap *map = subchip->regmap_gpadc;
int data = 0, mask = 0, ret = 0;
if (!map) {
dev_warn(chip->dev,
"Warning: gpadc regmap is not available!\n");
return -EINVAL;
}
/*
* initialize GPADC without activating it turn on GPADC
* measurments
*/
ret = regmap_update_bits(map,
PM800_GPADC_MISC_CONFIG2,
PM800_GPADC_MISC_GPFSM_EN,
PM800_GPADC_MISC_GPFSM_EN);
if (ret < 0)
goto out;
/*
* This function configures the ADC as requires for
* CP implementation.CP does not "own" the ADC configuration
* registers and relies on AP.
* Reason: enable automatic ADC measurements needed
* for CP to get VBAT and RF temperature readings.
*/
ret = regmap_update_bits(map, PM800_GPADC_MEAS_EN1,
PM800_MEAS_EN1_VBAT, PM800_MEAS_EN1_VBAT);
if (ret < 0)
goto out;
ret = regmap_update_bits(map, PM800_GPADC_MEAS_EN2,
(PM800_MEAS_EN2_RFTMP | PM800_MEAS_GP0_EN),
(PM800_MEAS_EN2_RFTMP | PM800_MEAS_GP0_EN));
if (ret < 0)
goto out;
/*
* the defult of PM800 is GPADC operates at 100Ks/s rate
* and Number of GPADC slots with active current bias prior
* to GPADC sampling = 1 slot for all GPADCs set for
* Temprature mesurmants
*/
mask = (PM800_GPADC_GP_BIAS_EN0 | PM800_GPADC_GP_BIAS_EN1 |
PM800_GPADC_GP_BIAS_EN2 | PM800_GPADC_GP_BIAS_EN3);
if (pdata && (pdata->batt_det == 0))
data = (PM800_GPADC_GP_BIAS_EN0 | PM800_GPADC_GP_BIAS_EN1 |
PM800_GPADC_GP_BIAS_EN2 | PM800_GPADC_GP_BIAS_EN3);
else
data = (PM800_GPADC_GP_BIAS_EN0 | PM800_GPADC_GP_BIAS_EN2 |
PM800_GPADC_GP_BIAS_EN3);
ret = regmap_update_bits(map, PM800_GP_BIAS_ENA1, mask, data);
if (ret < 0)
goto out;
dev_info(chip->dev, "pm800 device_gpadc_init: Done\n");
return 0;
out:
dev_info(chip->dev, "pm800 device_gpadc_init: Failed!\n");
return ret;
}
static int device_onkey_init(struct pm80x_chip *chip,
struct pm80x_platform_data *pdata)
{
int ret;
ret = mfd_add_devices(chip->dev, 0, &onkey_devs[0],
ARRAY_SIZE(onkey_devs), &onkey_resources[0], 0,
NULL);
if (ret) {
dev_err(chip->dev, "Failed to add onkey subdev\n");
return ret;
}
return 0;
}
static int device_rtc_init(struct pm80x_chip *chip,
struct pm80x_platform_data *pdata)
{
int ret;
if (pdata) {
rtc_devs[0].platform_data = pdata->rtc;
rtc_devs[0].pdata_size =
pdata->rtc ? sizeof(struct pm80x_rtc_pdata) : 0;
}
ret = mfd_add_devices(chip->dev, 0, &rtc_devs[0],
ARRAY_SIZE(rtc_devs), NULL, 0, NULL);
if (ret) {
dev_err(chip->dev, "Failed to add rtc subdev\n");
return ret;
}
return 0;
}
static int device_regulator_init(struct pm80x_chip *chip,
struct pm80x_platform_data *pdata)
{
int ret;
ret = mfd_add_devices(chip->dev, 0, &regulator_devs[0],
ARRAY_SIZE(regulator_devs), NULL, 0, NULL);
if (ret) {
dev_err(chip->dev, "Failed to add regulator subdev\n");
return ret;
}
return 0;
}
static int device_irq_init_800(struct pm80x_chip *chip)
{
struct regmap *map = chip->regmap;
unsigned long flags = IRQF_ONESHOT;
int data, mask, ret = -EINVAL;
if (!map || !chip->irq) {
dev_err(chip->dev, "incorrect parameters\n");
return -EINVAL;
}
/*
* irq_mode defines the way of clearing interrupt. it's read-clear by
* default.
*/
mask =
PM800_WAKEUP2_INV_INT | PM800_WAKEUP2_INT_CLEAR |
PM800_WAKEUP2_INT_MASK;
data = PM800_WAKEUP2_INT_CLEAR;
ret = regmap_update_bits(map, PM800_WAKEUP2, mask, data);
if (ret < 0)
goto out;
ret =
regmap_add_irq_chip(chip->regmap, chip->irq, flags, -1,
chip->regmap_irq_chip, &chip->irq_data);
out:
return ret;
}
static void device_irq_exit_800(struct pm80x_chip *chip)
{
regmap_del_irq_chip(chip->irq, chip->irq_data);
}
static struct regmap_irq_chip pm800_irq_chip = {
.name = "88pm800",
.irqs = pm800_irqs,
.num_irqs = ARRAY_SIZE(pm800_irqs),
.num_regs = 4,
.status_base = PM800_INT_STATUS1,
.mask_base = PM800_INT_ENA_1,
.ack_base = PM800_INT_STATUS1,
.mask_invert = 1,
};
static int pm800_pages_init(struct pm80x_chip *chip)
{
struct pm80x_subchip *subchip;
struct i2c_client *client = chip->client;
int ret = 0;
subchip = chip->subchip;
if (!subchip || !subchip->power_page_addr || !subchip->gpadc_page_addr)
return -ENODEV;
/* PM800 block power page */
subchip->power_page = i2c_new_dummy_device(client->adapter,
subchip->power_page_addr);
if (IS_ERR(subchip->power_page)) {
ret = PTR_ERR(subchip->power_page);
goto out;
}
subchip->regmap_power = devm_regmap_init_i2c(subchip->power_page,
&pm80x_regmap_config);
if (IS_ERR(subchip->regmap_power)) {
ret = PTR_ERR(subchip->regmap_power);
dev_err(chip->dev,
"Failed to allocate regmap_power: %d\n", ret);
goto out;
}
i2c_set_clientdata(subchip->power_page, chip);
/* PM800 block GPADC */
subchip->gpadc_page = i2c_new_dummy_device(client->adapter,
subchip->gpadc_page_addr);
if (IS_ERR(subchip->gpadc_page)) {
ret = PTR_ERR(subchip->gpadc_page);
goto out;
}
subchip->regmap_gpadc = devm_regmap_init_i2c(subchip->gpadc_page,
&pm80x_regmap_config);
if (IS_ERR(subchip->regmap_gpadc)) {
ret = PTR_ERR(subchip->regmap_gpadc);
dev_err(chip->dev,
"Failed to allocate regmap_gpadc: %d\n", ret);
goto out;
}
i2c_set_clientdata(subchip->gpadc_page, chip);
out:
return ret;
}
static void pm800_pages_exit(struct pm80x_chip *chip)
{
struct pm80x_subchip *subchip;
subchip = chip->subchip;
if (subchip && subchip->power_page)
i2c_unregister_device(subchip->power_page);
if (subchip && subchip->gpadc_page)
i2c_unregister_device(subchip->gpadc_page);
}
static int device_800_init(struct pm80x_chip *chip,
struct pm80x_platform_data *pdata)
{
int ret;
unsigned int val;
/*
* alarm wake up bit will be clear in device_irq_init(),
* read before that
*/
ret = regmap_read(chip->regmap, PM800_RTC_CONTROL, &val);
if (ret < 0) {
dev_err(chip->dev, "Failed to read RTC register: %d\n", ret);
goto out;
}
if (val & PM800_ALARM_WAKEUP) {
if (pdata && pdata->rtc)
pdata->rtc->rtc_wakeup = 1;
}
ret = device_gpadc_init(chip, pdata);
if (ret < 0) {
dev_err(chip->dev, "[%s]Failed to init gpadc\n", __func__);
goto out;
}
chip->regmap_irq_chip = &pm800_irq_chip;
ret = device_irq_init_800(chip);
if (ret < 0) {
dev_err(chip->dev, "[%s]Failed to init pm800 irq\n", __func__);
goto out;
}
ret = device_onkey_init(chip, pdata);
if (ret) {
dev_err(chip->dev, "Failed to add onkey subdev\n");
goto out_dev;
}
ret = device_rtc_init(chip, pdata);
if (ret) {
dev_err(chip->dev, "Failed to add rtc subdev\n");
goto out;
}
ret = device_regulator_init(chip, pdata);
if (ret) {
dev_err(chip->dev, "Failed to add regulators subdev\n");
goto out;
}
return 0;
out_dev:
mfd_remove_devices(chip->dev);
device_irq_exit_800(chip);
out:
return ret;
}
static int pm800_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
int ret = 0;
struct pm80x_chip *chip;
struct pm80x_platform_data *pdata = dev_get_platdata(&client->dev);
struct pm80x_subchip *subchip;
ret = pm80x_init(client);
if (ret) {
dev_err(&client->dev, "pm800_init fail\n");
goto out_init;
}
chip = i2c_get_clientdata(client);
/* init subchip for PM800 */
subchip =
devm_kzalloc(&client->dev, sizeof(struct pm80x_subchip),
GFP_KERNEL);
if (!subchip) {
ret = -ENOMEM;
goto err_subchip_alloc;
}
/* pm800 has 2 addtional pages to support power and gpadc. */
subchip->power_page_addr = client->addr + 1;
subchip->gpadc_page_addr = client->addr + 2;
chip->subchip = subchip;
ret = pm800_pages_init(chip);
if (ret) {
dev_err(&client->dev, "pm800_pages_init failed!\n");
goto err_device_init;
}
ret = device_800_init(chip, pdata);
if (ret) {
dev_err(chip->dev, "Failed to initialize 88pm800 devices\n");
goto err_device_init;
}
if (pdata && pdata->plat_config)
pdata->plat_config(chip, pdata);
return 0;
err_device_init:
pm800_pages_exit(chip);
err_subchip_alloc:
pm80x_deinit();
out_init:
return ret;
}
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>
2022-08-15 11:02:30 +03:00
static void pm800_remove(struct i2c_client *client)
{
struct pm80x_chip *chip = i2c_get_clientdata(client);
mfd_remove_devices(chip->dev);
device_irq_exit_800(chip);
pm800_pages_exit(chip);
pm80x_deinit();
}
static struct i2c_driver pm800_driver = {
.driver = {
.name = "88PM800",
.pm = &pm80x_pm_ops,
},
.probe = pm800_probe,
.remove = pm800_remove,
.id_table = pm80x_id_table,
};
static int __init pm800_i2c_init(void)
{
return i2c_add_driver(&pm800_driver);
}
subsys_initcall(pm800_i2c_init);
static void __exit pm800_i2c_exit(void)
{
i2c_del_driver(&pm800_driver);
}
module_exit(pm800_i2c_exit);
MODULE_DESCRIPTION("PMIC Driver for Marvell 88PM800");
MODULE_AUTHOR("Qiao Zhou <zhouqiao@marvell.com>");
MODULE_LICENSE("GPL");