diff options
Diffstat (limited to 'drivers/input/touchscreen/cyttsp4_i2c.c')
| -rw-r--r-- | drivers/input/touchscreen/cyttsp4_i2c.c | 278 |
1 files changed, 0 insertions, 278 deletions
diff --git a/drivers/input/touchscreen/cyttsp4_i2c.c b/drivers/input/touchscreen/cyttsp4_i2c.c deleted file mode 100644 index 8ed2073..0000000 --- a/drivers/input/touchscreen/cyttsp4_i2c.c +++ /dev/null @@ -1,278 +0,0 @@ -/* - * Source for: - * Cypress TrueTouch(TM) Standard Product (TTSP) I2C touchscreen driver. - * For use with Cypress Gen4 and Solo parts. - * Supported parts include: - * CY8CTMA884/616 - * CY8CTMA4XX - * - * Copyright (C) 2009-2012 Cypress Semiconductor, Inc. - * Copyright (C) 2011 Motorola Mobility, Inc. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * version 2, and only version 2, as published by the - * Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. - * - * Contact Cypress Semiconductor at www.cypress.com <kev@cypress.com> - * - */ - -#include "cyttsp4_core.h" - -#include <linux/i2c.h> -#include <linux/slab.h> -/* key led */ -#include <linux/regulator/consumer.h> -#define PRESS_KEY 1 /* Fixed value */ -#define RELEASE_KEY 0 /* Fixed value */ -static int led_status; -extern struct class *sec_class; - -#define CY_I2C_DATA_SIZE (3 * 256) - -struct cyttsp4_i2c { - struct cyttsp4_bus_ops ops; - struct i2c_client *client; - void *ttsp_client; - u8 wr_buf[CY_I2C_DATA_SIZE]; -}; - -/* key led */ -static ssize_t touchkey_led_control(struct device *dev, - struct device_attribute *attr, const char *buf, - size_t size) -{ - struct regulator *vreg_led = NULL; - int ret; - int data; - sscanf(buf, "%d\n", &data); - - pr_info("[TSP] %s : LED buf is %d\n", __func__, data); - - if (vreg_led == NULL) { - vreg_led = regulator_get(NULL, "KEYLED_3P3V"); - if (IS_ERR(vreg_led)) { - pr_err("tsp: Fail to register vreg_led(KEYLED_3P3V) in touch driver\n"); - return size; - } - } - if (data == 1 && led_status == 0) { - ret = regulator_enable(vreg_led); - if (ret) - pr_err("tsp: Fail to enable led\n"); - led_status = 1; - } else if (data == 2 && led_status == 1) { - ret = regulator_disable(vreg_led); - if (ret) - pr_err("tsp: Fail to disable led\n"); - led_status = 0; - } - - return size; -} -static DEVICE_ATTR(brightness, S_IRUGO | S_IWUSR | S_IWGRP, NULL, - touchkey_led_control); - -static s32 cyttsp4_i2c_read_block_data(void *handle, u16 subaddr, - size_t length, void *values, int i2c_addr, bool use_subaddr) -{ - struct cyttsp4_i2c *ts = container_of(handle, struct cyttsp4_i2c, ops); - int retval = 0; - u8 sub_addr[2]; - int subaddr_len; - - if (use_subaddr) { - subaddr_len = 1; - sub_addr[0] = subaddr; - } - - ts->client->addr = i2c_addr; - if (!use_subaddr) - goto read_packet; - - /* write subaddr */ - retval = i2c_master_send(ts->client, sub_addr, subaddr_len); - if (retval < 0) - return retval; - else if (retval != subaddr_len) - return -EIO; - -read_packet: - retval = i2c_master_recv(ts->client, values, length); - - return (retval < 0) ? retval : retval != length ? -EIO : 0; -} - -static s32 cyttsp4_i2c_write_block_data(void *handle, u16 subaddr, - size_t length, const void *values, int i2c_addr, bool use_subaddr) -{ - struct cyttsp4_i2c *ts = container_of(handle, struct cyttsp4_i2c, ops); - int retval; - - if (use_subaddr) { - ts->wr_buf[0] = subaddr; - memcpy(&ts->wr_buf[1], values, length); - length += 1; - } else { - memcpy(&ts->wr_buf[0], values, length); - } - ts->client->addr = i2c_addr; - retval = i2c_master_send(ts->client, ts->wr_buf, length); - - return (retval < 0) ? retval : retval != length ? -EIO : 0; -} - -static int __devinit cyttsp4_i2c_probe(struct i2c_client *client, - const struct i2c_device_id *id) -{ - struct regulator *vreg_led = NULL; - struct cyttsp4_i2c *ts; - int retval = 0; - /* key led */ - struct device *sec_touchkey; - - pr_info("%s: Starting %s probe...\n", __func__, CY_I2C_NAME); - - if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) { - pr_err("%s: fail check I2C functionality\n", __func__); - retval = -EIO; - goto cyttsp4_i2c_probe_exit; - } - - /* allocate and clear memory */ - ts = kzalloc(sizeof(struct cyttsp4_i2c), GFP_KERNEL); - if (ts == NULL) { - pr_err("%s: Error, kzalloc.\n", __func__); - retval = -ENOMEM; - goto cyttsp4_i2c_probe_exit; - } - - /* register driver_data */ - ts->client = client; - i2c_set_clientdata(client, ts); - ts->ops.write = cyttsp4_i2c_write_block_data; - ts->ops.read = cyttsp4_i2c_read_block_data; - ts->ops.dev = &client->dev; - ts->ops.dev->bus = &i2c_bus_type; - - ts->ttsp_client = cyttsp4_core_init(&ts->ops, &client->dev, - client->irq, client->name); - - if (ts->ttsp_client == NULL) { - kfree(ts); - ts = NULL; - retval = -ENODATA; - pr_err("%s: Registration fail ret=%d\n", __func__, retval); - goto cyttsp4_i2c_probe_exit; - } - - dev_info(ts->ops.dev, - "%s: Registration complete\n", __func__); - - /* key led */ - vreg_led = regulator_get(NULL, "KEYLED_3P3V"); - if (IS_ERR(vreg_led)) - goto err_vreg_led; - led_status = 0; - sec_touchkey = device_create(sec_class, NULL, 0, NULL, "sec_touchkey"); - if (device_create_file(sec_touchkey, - &dev_attr_brightness) < 0) { - pr_err("Failed to create device file(%s)!\n", - dev_attr_brightness.attr.name); - } - - return 0; - -cyttsp4_i2c_probe_exit: - return retval; - -err_vreg_led: - pr_err("tsp: Fail to register vreg_led(KEYLED_3P3V) in touch driver\n"); - regulator_put(vreg_led); - return retval; -} - -/* registered in driver struct */ -static int __devexit cyttsp4_i2c_remove(struct i2c_client *client) -{ - struct regulator *vreg_led = NULL; - struct cyttsp4_i2c *ts; - - ts = i2c_get_clientdata(client); - cyttsp4_core_release(ts->ttsp_client); - kfree(ts); - regulator_put(vreg_led); - return 0; -} - -#if !defined(CONFIG_HAS_EARLYSUSPEND) && !defined(CONFIG_PM_SLEEP) -#if defined(CONFIG_PM) -static int cyttsp4_i2c_suspend(struct i2c_client *client, pm_message_t message) -{ - struct cyttsp4_i2c *ts = i2c_get_clientdata(client); - - return cyttsp4_suspend(ts); -} - -static int cyttsp4_i2c_resume(struct i2c_client *client) -{ - struct cyttsp4_i2c *ts = i2c_get_clientdata(client); - - return cyttsp4_resume(ts); -} -#endif -#endif - -static const struct i2c_device_id cyttsp4_i2c_id[] = { - { CY_I2C_NAME, 0 }, { } -}; - -static struct i2c_driver cyttsp4_i2c_driver = { - .driver = { - .name = CY_I2C_NAME, - .owner = THIS_MODULE, -#if !defined(CONFIG_HAS_EARLYSUSPEND) -#if defined(CONFIG_PM_SLEEP) - .pm = &cyttsp4_pm_ops, -#endif -#endif - }, - .probe = cyttsp4_i2c_probe, - .remove = __devexit_p(cyttsp4_i2c_remove), - .id_table = cyttsp4_i2c_id, -#if !defined(CONFIG_HAS_EARLYSUSPEND) && !defined(CONFIG_PM_SLEEP) -#if defined(CONFIG_PM) - .suspend = cyttsp4_i2c_suspend, - .resume = cyttsp4_i2c_resume, -#endif -#endif -}; - -static int __init cyttsp4_i2c_init(void) -{ - return i2c_add_driver(&cyttsp4_i2c_driver); -} - -static void __exit cyttsp4_i2c_exit(void) -{ - return i2c_del_driver(&cyttsp4_i2c_driver); -} - -module_init(cyttsp4_i2c_init); -module_exit(cyttsp4_i2c_exit); - -MODULE_ALIAS(CY_I2C_NAME); -MODULE_LICENSE("GPL"); -MODULE_DESCRIPTION("Cypress TrueTouch(R) Standard Product (TTSP) I2C driver"); -MODULE_AUTHOR("Cypress"); -MODULE_DEVICE_TABLE(i2c, cyttsp4_i2c_id); |