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141 lines
3.6 KiB
141 lines
3.6 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* ST Microelectronics MFD: stmpe's i2c client specific driver |
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* |
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* Copyright (C) ST-Ericsson SA 2010 |
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* Copyright (C) ST Microelectronics SA 2011 |
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* |
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* Author: Rabin Vincent <[email protected]> for ST-Ericsson |
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* Author: Viresh Kumar <[email protected]> for ST Microelectronics |
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*/ |
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#include <linux/i2c.h> |
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#include <linux/interrupt.h> |
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#include <linux/kernel.h> |
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#include <linux/module.h> |
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#include <linux/types.h> |
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#include <linux/of_device.h> |
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#include "stmpe.h" |
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static int i2c_reg_read(struct stmpe *stmpe, u8 reg) |
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{ |
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struct i2c_client *i2c = stmpe->client; |
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return i2c_smbus_read_byte_data(i2c, reg); |
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} |
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static int i2c_reg_write(struct stmpe *stmpe, u8 reg, u8 val) |
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{ |
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struct i2c_client *i2c = stmpe->client; |
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return i2c_smbus_write_byte_data(i2c, reg, val); |
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} |
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static int i2c_block_read(struct stmpe *stmpe, u8 reg, u8 length, u8 *values) |
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{ |
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struct i2c_client *i2c = stmpe->client; |
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return i2c_smbus_read_i2c_block_data(i2c, reg, length, values); |
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} |
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static int i2c_block_write(struct stmpe *stmpe, u8 reg, u8 length, |
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const u8 *values) |
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{ |
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struct i2c_client *i2c = stmpe->client; |
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return i2c_smbus_write_i2c_block_data(i2c, reg, length, values); |
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} |
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static struct stmpe_client_info i2c_ci = { |
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.read_byte = i2c_reg_read, |
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.write_byte = i2c_reg_write, |
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.read_block = i2c_block_read, |
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.write_block = i2c_block_write, |
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}; |
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static const struct of_device_id stmpe_of_match[] = { |
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{ .compatible = "st,stmpe610", .data = (void *)STMPE610, }, |
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{ .compatible = "st,stmpe801", .data = (void *)STMPE801, }, |
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{ .compatible = "st,stmpe811", .data = (void *)STMPE811, }, |
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{ .compatible = "st,stmpe1600", .data = (void *)STMPE1600, }, |
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{ .compatible = "st,stmpe1601", .data = (void *)STMPE1601, }, |
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{ .compatible = "st,stmpe1801", .data = (void *)STMPE1801, }, |
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{ .compatible = "st,stmpe2401", .data = (void *)STMPE2401, }, |
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{ .compatible = "st,stmpe2403", .data = (void *)STMPE2403, }, |
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{}, |
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}; |
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MODULE_DEVICE_TABLE(of, stmpe_of_match); |
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static int |
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stmpe_i2c_probe(struct i2c_client *i2c, const struct i2c_device_id *id) |
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{ |
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enum stmpe_partnum partnum; |
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const struct of_device_id *of_id; |
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i2c_ci.data = (void *)id; |
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i2c_ci.irq = i2c->irq; |
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i2c_ci.client = i2c; |
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i2c_ci.dev = &i2c->dev; |
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of_id = of_match_device(stmpe_of_match, &i2c->dev); |
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if (!of_id) { |
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/* |
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* This happens when the I2C ID matches the node name |
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* but no real compatible string has been given. |
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*/ |
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dev_info(&i2c->dev, "matching on node name, compatible is preferred\n"); |
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partnum = id->driver_data; |
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} else |
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partnum = (enum stmpe_partnum)of_id->data; |
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return stmpe_probe(&i2c_ci, partnum); |
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} |
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static int stmpe_i2c_remove(struct i2c_client *i2c) |
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{ |
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struct stmpe *stmpe = dev_get_drvdata(&i2c->dev); |
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return stmpe_remove(stmpe); |
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} |
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static const struct i2c_device_id stmpe_i2c_id[] = { |
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{ "stmpe610", STMPE610 }, |
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{ "stmpe801", STMPE801 }, |
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{ "stmpe811", STMPE811 }, |
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{ "stmpe1600", STMPE1600 }, |
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{ "stmpe1601", STMPE1601 }, |
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{ "stmpe1801", STMPE1801 }, |
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{ "stmpe2401", STMPE2401 }, |
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{ "stmpe2403", STMPE2403 }, |
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{ } |
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}; |
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MODULE_DEVICE_TABLE(i2c, stmpe_i2c_id); |
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static struct i2c_driver stmpe_i2c_driver = { |
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.driver = { |
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.name = "stmpe-i2c", |
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#ifdef CONFIG_PM |
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.pm = &stmpe_dev_pm_ops, |
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#endif |
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.of_match_table = stmpe_of_match, |
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}, |
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.probe = stmpe_i2c_probe, |
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.remove = stmpe_i2c_remove, |
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.id_table = stmpe_i2c_id, |
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}; |
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static int __init stmpe_init(void) |
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{ |
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return i2c_add_driver(&stmpe_i2c_driver); |
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} |
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subsys_initcall(stmpe_init); |
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static void __exit stmpe_exit(void) |
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{ |
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i2c_del_driver(&stmpe_i2c_driver); |
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} |
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module_exit(stmpe_exit); |
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MODULE_LICENSE("GPL v2"); |
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MODULE_DESCRIPTION("STMPE MFD I2C Interface Driver"); |
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MODULE_AUTHOR("Rabin Vincent <[email protected]>");
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