| Viresh Kumar | 1a6e4b7 | 2011-11-17 11:02:20 +0530 | [diff] [blame] | 1 | /* |
| 2 | * ST Microelectronics MFD: stmpe's i2c client specific driver |
| 3 | * |
| 4 | * Copyright (C) ST-Ericsson SA 2010 |
| 5 | * Copyright (C) ST Microelectronics SA 2011 |
| 6 | * |
| 7 | * License Terms: GNU General Public License, version 2 |
| 8 | * Author: Rabin Vincent <rabin.vincent@stericsson.com> for ST-Ericsson |
| 9 | * Author: Viresh Kumar <viresh.kumar@st.com> for ST Microelectronics |
| 10 | */ |
| 11 | |
| 12 | #include <linux/i2c.h> |
| 13 | #include <linux/interrupt.h> |
| 14 | #include <linux/kernel.h> |
| 15 | #include <linux/module.h> |
| 16 | #include <linux/types.h> |
| 17 | #include "stmpe.h" |
| 18 | |
| 19 | static int i2c_reg_read(struct stmpe *stmpe, u8 reg) |
| 20 | { |
| 21 | struct i2c_client *i2c = stmpe->client; |
| 22 | |
| 23 | return i2c_smbus_read_byte_data(i2c, reg); |
| 24 | } |
| 25 | |
| 26 | static int i2c_reg_write(struct stmpe *stmpe, u8 reg, u8 val) |
| 27 | { |
| 28 | struct i2c_client *i2c = stmpe->client; |
| 29 | |
| 30 | return i2c_smbus_write_byte_data(i2c, reg, val); |
| 31 | } |
| 32 | |
| 33 | static int i2c_block_read(struct stmpe *stmpe, u8 reg, u8 length, u8 *values) |
| 34 | { |
| 35 | struct i2c_client *i2c = stmpe->client; |
| 36 | |
| 37 | return i2c_smbus_read_i2c_block_data(i2c, reg, length, values); |
| 38 | } |
| 39 | |
| 40 | static int i2c_block_write(struct stmpe *stmpe, u8 reg, u8 length, |
| 41 | const u8 *values) |
| 42 | { |
| 43 | struct i2c_client *i2c = stmpe->client; |
| 44 | |
| 45 | return i2c_smbus_write_i2c_block_data(i2c, reg, length, values); |
| 46 | } |
| 47 | |
| 48 | static struct stmpe_client_info i2c_ci = { |
| 49 | .read_byte = i2c_reg_read, |
| 50 | .write_byte = i2c_reg_write, |
| 51 | .read_block = i2c_block_read, |
| 52 | .write_block = i2c_block_write, |
| 53 | }; |
| 54 | |
| 55 | static int __devinit |
| 56 | stmpe_i2c_probe(struct i2c_client *i2c, const struct i2c_device_id *id) |
| 57 | { |
| 58 | i2c_ci.data = (void *)id; |
| 59 | i2c_ci.irq = i2c->irq; |
| 60 | i2c_ci.client = i2c; |
| 61 | i2c_ci.dev = &i2c->dev; |
| 62 | |
| 63 | return stmpe_probe(&i2c_ci, id->driver_data); |
| 64 | } |
| 65 | |
| 66 | static int __devexit stmpe_i2c_remove(struct i2c_client *i2c) |
| 67 | { |
| 68 | struct stmpe *stmpe = dev_get_drvdata(&i2c->dev); |
| 69 | |
| 70 | return stmpe_remove(stmpe); |
| 71 | } |
| 72 | |
| 73 | static const struct i2c_device_id stmpe_i2c_id[] = { |
| Viresh Kumar | 1cda239 | 2011-11-17 11:02:22 +0530 | [diff] [blame] | 74 | { "stmpe610", STMPE610 }, |
| Viresh Kumar | 7f7f4ea | 2011-11-17 11:02:23 +0530 | [diff] [blame] | 75 | { "stmpe801", STMPE801 }, |
| Viresh Kumar | 1a6e4b7 | 2011-11-17 11:02:20 +0530 | [diff] [blame] | 76 | { "stmpe811", STMPE811 }, |
| 77 | { "stmpe1601", STMPE1601 }, |
| 78 | { "stmpe2401", STMPE2401 }, |
| 79 | { "stmpe2403", STMPE2403 }, |
| 80 | { } |
| 81 | }; |
| 82 | MODULE_DEVICE_TABLE(i2c, stmpe_id); |
| 83 | |
| 84 | static struct i2c_driver stmpe_i2c_driver = { |
| 85 | .driver.name = "stmpe-i2c", |
| 86 | .driver.owner = THIS_MODULE, |
| 87 | #ifdef CONFIG_PM |
| 88 | .driver.pm = &stmpe_dev_pm_ops, |
| 89 | #endif |
| 90 | .probe = stmpe_i2c_probe, |
| 91 | .remove = __devexit_p(stmpe_i2c_remove), |
| 92 | .id_table = stmpe_i2c_id, |
| 93 | }; |
| 94 | |
| 95 | static int __init stmpe_init(void) |
| 96 | { |
| 97 | return i2c_add_driver(&stmpe_i2c_driver); |
| 98 | } |
| 99 | subsys_initcall(stmpe_init); |
| 100 | |
| 101 | static void __exit stmpe_exit(void) |
| 102 | { |
| 103 | i2c_del_driver(&stmpe_i2c_driver); |
| 104 | } |
| 105 | module_exit(stmpe_exit); |
| 106 | |
| 107 | MODULE_LICENSE("GPL v2"); |
| 108 | MODULE_DESCRIPTION("STMPE MFD I2C Interface Driver"); |
| 109 | MODULE_AUTHOR("Rabin Vincent <rabin.vincent@stericsson.com>"); |