/* * 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 <vireshk@kernel.org> for ST Microelectronics */ #include <linux/i2c.h> #include <linux/interrupt.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/types.h> #include <linux/of_device.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 const struct of_device_id stmpe_of_match[] = { { .compatible = "st,stmpe610", .data = (void *)STMPE610, }, { .compatible = "st,stmpe801", .data = (void *)STMPE801, }, { .compatible = "st,stmpe811", .data = (void *)STMPE811, }, { .compatible = "st,stmpe1600", .data = (void *)STMPE1600, }, { .compatible = "st,stmpe1601", .data = (void *)STMPE1601, }, { .compatible = "st,stmpe1801", .data = (void *)STMPE1801, }, { .compatible = "st,stmpe2401", .data = (void *)STMPE2401, }, { .compatible = "st,stmpe2403", .data = (void *)STMPE2403, }, {}, }; MODULE_DEVICE_TABLE(of, stmpe_of_match); static int stmpe_i2c_probe(struct i2c_client *i2c, const struct i2c_device_id *id) { enum stmpe_partnum partnum; const struct of_device_id *of_id; i2c_ci.data = (void *)id; i2c_ci.irq = i2c->irq; i2c_ci.client = i2c; i2c_ci.dev = &i2c->dev; of_id = of_match_device(stmpe_of_match, &i2c->dev); if (!of_id) { /* * This happens when the I2C ID matches the node name * but no real compatible string has been given. */ dev_info(&i2c->dev, "matching on node name, compatible is preferred\n"); partnum = id->driver_data; } else partnum = (enum stmpe_partnum)of_id->data; return stmpe_probe(&i2c_ci, partnum); } static int 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 }, { "stmpe1600", STMPE1600 }, { "stmpe1601", STMPE1601 }, { "stmpe1801", STMPE1801 }, { "stmpe2401", STMPE2401 }, { "stmpe2403", STMPE2403 }, { } }; MODULE_DEVICE_TABLE(i2c, stmpe_id); static struct i2c_driver stmpe_i2c_driver = { .driver = { .name = "stmpe-i2c", #ifdef CONFIG_PM .pm = &stmpe_dev_pm_ops, #endif .of_match_table = stmpe_of_match, }, .probe = stmpe_i2c_probe, .remove = 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>");