mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-11 17:56:49 +07:00
7f7f4ea15e
STMPE801 is a GPIO expander. Registers for 801 are much different from other variants. This patch adds support for STMPE801 in stmpe mfd driver. Signed-off-by: Bhupesh Sharma <bhupesh.sharma@st.com> Signed-off-by: Pratyush Anand <pratyush.anand@st.com> Signed-off-by: Viresh Kumar <viresh.kumar@st.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
110 lines
2.6 KiB
C
110 lines
2.6 KiB
C
/*
|
|
* ST Microelectronics MFD: stmpe's i2c client specific driver
|
|
*
|
|
* Copyright (C) ST-Ericsson SA 2010
|
|
* Copyright (C) ST Microelectronics SA 2011
|
|
*
|
|
* License Terms: GNU General Public License, version 2
|
|
* Author: Rabin Vincent <rabin.vincent@stericsson.com> for ST-Ericsson
|
|
* Author: Viresh Kumar <viresh.kumar@st.com> for ST Microelectronics
|
|
*/
|
|
|
|
#include <linux/i2c.h>
|
|
#include <linux/interrupt.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/module.h>
|
|
#include <linux/types.h>
|
|
#include "stmpe.h"
|
|
|
|
static int i2c_reg_read(struct stmpe *stmpe, u8 reg)
|
|
{
|
|
struct i2c_client *i2c = stmpe->client;
|
|
|
|
return i2c_smbus_read_byte_data(i2c, reg);
|
|
}
|
|
|
|
static int i2c_reg_write(struct stmpe *stmpe, u8 reg, u8 val)
|
|
{
|
|
struct i2c_client *i2c = stmpe->client;
|
|
|
|
return i2c_smbus_write_byte_data(i2c, reg, val);
|
|
}
|
|
|
|
static int i2c_block_read(struct stmpe *stmpe, u8 reg, u8 length, u8 *values)
|
|
{
|
|
struct i2c_client *i2c = stmpe->client;
|
|
|
|
return i2c_smbus_read_i2c_block_data(i2c, reg, length, values);
|
|
}
|
|
|
|
static int i2c_block_write(struct stmpe *stmpe, u8 reg, u8 length,
|
|
const u8 *values)
|
|
{
|
|
struct i2c_client *i2c = stmpe->client;
|
|
|
|
return i2c_smbus_write_i2c_block_data(i2c, reg, length, values);
|
|
}
|
|
|
|
static struct stmpe_client_info i2c_ci = {
|
|
.read_byte = i2c_reg_read,
|
|
.write_byte = i2c_reg_write,
|
|
.read_block = i2c_block_read,
|
|
.write_block = i2c_block_write,
|
|
};
|
|
|
|
static int __devinit
|
|
stmpe_i2c_probe(struct i2c_client *i2c, const struct i2c_device_id *id)
|
|
{
|
|
i2c_ci.data = (void *)id;
|
|
i2c_ci.irq = i2c->irq;
|
|
i2c_ci.client = i2c;
|
|
i2c_ci.dev = &i2c->dev;
|
|
|
|
return stmpe_probe(&i2c_ci, id->driver_data);
|
|
}
|
|
|
|
static int __devexit stmpe_i2c_remove(struct i2c_client *i2c)
|
|
{
|
|
struct stmpe *stmpe = dev_get_drvdata(&i2c->dev);
|
|
|
|
return stmpe_remove(stmpe);
|
|
}
|
|
|
|
static const struct i2c_device_id stmpe_i2c_id[] = {
|
|
{ "stmpe610", STMPE610 },
|
|
{ "stmpe801", STMPE801 },
|
|
{ "stmpe811", STMPE811 },
|
|
{ "stmpe1601", STMPE1601 },
|
|
{ "stmpe2401", STMPE2401 },
|
|
{ "stmpe2403", STMPE2403 },
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(i2c, stmpe_id);
|
|
|
|
static struct i2c_driver stmpe_i2c_driver = {
|
|
.driver.name = "stmpe-i2c",
|
|
.driver.owner = THIS_MODULE,
|
|
#ifdef CONFIG_PM
|
|
.driver.pm = &stmpe_dev_pm_ops,
|
|
#endif
|
|
.probe = stmpe_i2c_probe,
|
|
.remove = __devexit_p(stmpe_i2c_remove),
|
|
.id_table = stmpe_i2c_id,
|
|
};
|
|
|
|
static int __init stmpe_init(void)
|
|
{
|
|
return i2c_add_driver(&stmpe_i2c_driver);
|
|
}
|
|
subsys_initcall(stmpe_init);
|
|
|
|
static void __exit stmpe_exit(void)
|
|
{
|
|
i2c_del_driver(&stmpe_i2c_driver);
|
|
}
|
|
module_exit(stmpe_exit);
|
|
|
|
MODULE_LICENSE("GPL v2");
|
|
MODULE_DESCRIPTION("STMPE MFD I2C Interface Driver");
|
|
MODULE_AUTHOR("Rabin Vincent <rabin.vincent@stericsson.com>");
|