tca6416-keypad.c (b74b953b998bcc2db91b694446f3a2619ec32de6) tca6416-keypad.c (b8a3d6bcbc85d7636d9f2adede8479ce2999c232)
1/*
2 * Driver for keys on TCA6416 I2C IO expander
3 *
4 * Copyright (C) 2010 Texas Instruments
5 *
6 * Author : Sriramakrishnan.A.G. <srk@ti.com>
7 *
8 * This program is free software; you can redistribute it and/or modify

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24
25#define TCA6416_INPUT 0
26#define TCA6416_OUTPUT 1
27#define TCA6416_INVERT 2
28#define TCA6416_DIRECTION 3
29
30static const struct i2c_device_id tca6416_id[] = {
31 { "tca6416-keys", 16, },
1/*
2 * Driver for keys on TCA6416 I2C IO expander
3 *
4 * Copyright (C) 2010 Texas Instruments
5 *
6 * Author : Sriramakrishnan.A.G. <srk@ti.com>
7 *
8 * This program is free software; you can redistribute it and/or modify

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24
25#define TCA6416_INPUT 0
26#define TCA6416_OUTPUT 1
27#define TCA6416_INVERT 2
28#define TCA6416_DIRECTION 3
29
30static const struct i2c_device_id tca6416_id[] = {
31 { "tca6416-keys", 16, },
32 { "tca6408-keys", 8, },
32 { }
33};
34MODULE_DEVICE_TABLE(i2c, tca6416_id);
35
36struct tca6416_drv_data {
37 struct input_dev *input;
38 struct tca6416_button data[0];
39};
40
41struct tca6416_keypad_chip {
42 uint16_t reg_output;
43 uint16_t reg_direction;
44 uint16_t reg_input;
45
46 struct i2c_client *client;
47 struct input_dev *input;
48 struct delayed_work dwork;
33 { }
34};
35MODULE_DEVICE_TABLE(i2c, tca6416_id);
36
37struct tca6416_drv_data {
38 struct input_dev *input;
39 struct tca6416_button data[0];
40};
41
42struct tca6416_keypad_chip {
43 uint16_t reg_output;
44 uint16_t reg_direction;
45 uint16_t reg_input;
46
47 struct i2c_client *client;
48 struct input_dev *input;
49 struct delayed_work dwork;
49 u16 pinmask;
50 int io_size;
50 int irqnum;
51 int irqnum;
52 u16 pinmask;
51 bool use_polling;
52 struct tca6416_button buttons[0];
53};
54
55static int tca6416_write_reg(struct tca6416_keypad_chip *chip, int reg, u16 val)
56{
57 int error;
58
53 bool use_polling;
54 struct tca6416_button buttons[0];
55};
56
57static int tca6416_write_reg(struct tca6416_keypad_chip *chip, int reg, u16 val)
58{
59 int error;
60
59 error = i2c_smbus_write_word_data(chip->client, reg << 1, val);
61 error = chip->io_size > 8 ?
62 i2c_smbus_write_word_data(chip->client, reg << 1, val) :
63 i2c_smbus_write_byte_data(chip->client, reg, val);
60 if (error < 0) {
61 dev_err(&chip->client->dev,
62 "%s failed, reg: %d, val: %d, error: %d\n",
63 __func__, reg, val, error);
64 return error;
65 }
66
67 return 0;
68}
69
70static int tca6416_read_reg(struct tca6416_keypad_chip *chip, int reg, u16 *val)
71{
72 int retval;
73
64 if (error < 0) {
65 dev_err(&chip->client->dev,
66 "%s failed, reg: %d, val: %d, error: %d\n",
67 __func__, reg, val, error);
68 return error;
69 }
70
71 return 0;
72}
73
74static int tca6416_read_reg(struct tca6416_keypad_chip *chip, int reg, u16 *val)
75{
76 int retval;
77
74 retval = i2c_smbus_read_word_data(chip->client, reg << 1);
78 retval = chip->io_size > 8 ?
79 i2c_smbus_read_word_data(chip->client, reg << 1) :
80 i2c_smbus_read_byte_data(chip->client, reg);
75 if (retval < 0) {
76 dev_err(&chip->client->dev, "%s failed, reg: %d, error: %d\n",
77 __func__, reg, retval);
78 return retval;
79 }
80
81 *val = (u16)retval;
82 return 0;

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219 input = input_allocate_device();
220 if (!chip || !input) {
221 error = -ENOMEM;
222 goto fail1;
223 }
224
225 chip->client = client;
226 chip->input = input;
81 if (retval < 0) {
82 dev_err(&chip->client->dev, "%s failed, reg: %d, error: %d\n",
83 __func__, reg, retval);
84 return retval;
85 }
86
87 *val = (u16)retval;
88 return 0;

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225 input = input_allocate_device();
226 if (!chip || !input) {
227 error = -ENOMEM;
228 goto fail1;
229 }
230
231 chip->client = client;
232 chip->input = input;
233 chip->io_size = id->driver_data;
227 chip->pinmask = pdata->pinmask;
228 chip->use_polling = pdata->use_polling;
229
230 INIT_DELAYED_WORK(&chip->dwork, tca6416_keys_work_func);
231
232 input->phys = "tca6416-keys/input0";
233 input->name = client->name;
234 input->dev.parent = &client->dev;

--- 113 unchanged lines hidden --- 		234 chip->pinmask = pdata->pinmask;
235 chip->use_polling = pdata->use_polling;
236
237 INIT_DELAYED_WORK(&chip->dwork, tca6416_keys_work_func);
238
239 input->phys = "tca6416-keys/input0";
240 input->name = client->name;
241 input->dev.parent = &client->dev;

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