static int cptk_resume(struct device *dev)
{
struct i2c_client *client = to_i2c_client(dev);
struct cptk_data *cptk = i2c_get_clientdata(client);
mutex_lock(&cptk->lock);
if (cptk && cptk->pdata->power)
cptk->pdata->power(1);
cptk->enable = true;
cptk_i2c_write(cptk, KEYCODE_REG, AUTO_CAL_MODE_CMD);
cptk_i2c_write(cptk, CMD_REG, AUTO_CAL_EN_CMD);
msleep(50);
if (cptk->led_status == LED_ON_CMD)
cptk_i2c_write(cptk, KEYCODE_REG, LED_ON_CMD);
msleep(20); /* To need a minimum 14ms. time at mode changing */
mutex_unlock(&cptk->lock);
enable_irq(cptk->client->irq);
dev_info(dev, "cptk resume\n");
return 0;
}
static ssize_t touch_led_control(struct device *dev,
struct device_attribute *attr,
const char *buf,
size_t size)
{
struct cptk_data *cptk = dev_get_drvdata(dev);
int data;
int ret;
mutex_lock(&cptk->lock);
ret = sscanf(buf, "%d\n", &data);
if (unlikely(ret != 1)) {
pr_err("cptk: %s err\n", __func__);
mutex_unlock(&cptk->lock);
return -EINVAL;
}
data = data<<4;
cptk_i2c_write(cptk, KEYCODE_REG, data);
cptk->led_status = data;
msleep(20); /* To need a minimum 14ms. time at mode changing */
mutex_unlock(&cptk->lock);
return size;
}
static ssize_t touch_sensitivity_control(struct device *dev,
struct device_attribute *attr, const char *buf,
size_t size)
{
struct cptk_data *cptk = dev_get_drvdata(dev);
mutex_lock(&cptk->lock);
cptk_i2c_write(cptk, KEYCODE_REG, SENS_EN_CMD);
mutex_unlock(&cptk->lock);
return size;
}
static int cptk_late_resume(struct early_suspend *h)
{
struct cptk_data *cptk = container_of(h,
struct cptk_data,
early_suspend);
mutex_lock(&cptk->lock);
if (cptk && cptk->pdata->power)
cptk->pdata->power(1);
cptk->enable = true;
enable_irq(cptk->client->irq);
cptk_i2c_write(cptk, KEYCODE_REG, AUTO_CAL_MODE_CMD);
cptk_i2c_write(cptk, CMD_REG, AUTO_CAL_EN_CMD);
msleep(50);
if (cptk->led_status == LED_ON_CMD)
cptk_i2c_write(cptk, KEYCODE_REG, LED_ON_CMD);
mutex_unlock(&cptk->lock);
return 0;
}
static ssize_t touch_sensitivity_control(struct device *dev,
struct device_attribute *attr,
const char *buf,
size_t size)
{
struct cptk_data *cptk = dev_get_drvdata(dev);
mutex_lock(&cptk->lock);
cptk_i2c_write(cptk, KEYCODE_REG, SENS_EN_CMD);
msleep(20); /* To need a minimum 14ms. time at mode changing */
mutex_unlock(&cptk->lock);
return size;
}
static int __init cptk_i2c_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct cptk_data *cptk;
struct cptk_platform_data *pdata = client->dev.platform_data;
struct device_node *np = client->dev.of_node;
int ret = -ENODEV;
int i;
if (IS_ENABLED(CONFIG_OF)) {
if (!pdata) {
pdata = devm_kzalloc(&client->dev, sizeof(*pdata), GFP_KERNEL);
if (unlikely(!pdata))
return -ENOMEM;
}
ret = cptk_probe_dt(np, &client->dev, pdata);
if (ret)
goto err_exit1;
}
else if (!pdata) {
dev_err(&client->dev, "%s: missing pdata\n", __func__);
return ret;
}
cptk = kzalloc(sizeof(struct cptk_data), GFP_KERNEL);
if (unlikely(!cptk)) {
dev_err(&client->dev, "failed to allocate driver data\n");
ret = -ENOMEM;
goto err_exit1;
}
cptk->pdata = pdata;
ret = gpio_request(pdata->gpio, "TOUCHKEY_INT");
if (ret < 0) {
pr_err("%s: gpio request touchkey interrupt failed!, ret = %d\n", __func__, ret);
goto err_exit2;
}
ret = gpio_request(pdata->en_pin, "TOUCHKEY_EN");
if (ret < 0) {
pr_err("%s: gpio request for touchkey ldo failed!, ret = %d\n", __func__, ret);
goto err_exit3;
}
gpio_direction_output(pdata->en_pin, GPIOF_INIT_LOW);
cptk->input_dev = input_allocate_device();
if (unlikely(!cptk->input_dev)) {
dev_err(&client->dev, "failed to allocate memory\n");
ret = -ENOMEM;
goto err_exit4;
}
cptk->client = client;
strlcpy(cptk->client->name, "cypress-touchkey", I2C_NAME_SIZE);
cptk->client->dev.init_name = DEVICE_NAME;
i2c_set_clientdata(client, cptk);
cptk->input_dev->name = DEVICE_NAME;
cptk->input_dev->phys = "cypress-touchkey/input0";
cptk->input_dev->id.bustype = BUS_HOST;
cptk->input_dev->dev.parent = &client->dev;
set_bit(EV_SYN, cptk->input_dev->evbit);
set_bit(EV_KEY, cptk->input_dev->evbit);
set_bit(EV_LED, cptk->input_dev->evbit);
set_bit(LED_MISC, cptk->input_dev->ledbit);
for (i = 1; i < cptk->pdata->keymap_size; i++)
set_bit(cptk->pdata->keymap[i], cptk->input_dev->keybit);
ret = input_register_device(cptk->input_dev);
if (ret) {
input_free_device(cptk->input_dev);
goto err_exit4;
}
mutex_init(&cptk->i2c_lock);
mutex_init(&cptk->lock);
if (cptk->pdata->power)
cptk->pdata->power(1);
cptk->enable = true;
/* Check Touch Key IC connect properly && read IC fw. version */
ret = cptk_i2c_read(cptk, KEYCODE_REG, cptk->cur_firm_ver,
sizeof(cptk->cur_firm_ver));
if (ret < 0) {
pr_err("cptk: %s: touch key IC is not connected.\n", __func__);
goto err_exit5;
}
pr_info("cptk: module ver = 0x%.2x, IC firm ver = 0x%.2x, binary firm ver = 0x%.2x\n",
cptk->cur_firm_ver[2],
cptk->cur_firm_ver[1],
cptk->pdata->firm_ver);
if (cptk->cur_firm_ver[2] == cptk->pdata->mod_ver) {
if (cptk->cur_firm_ver[1] < cptk->pdata->firm_ver) {
pr_info("cptk: force firmware update\n");
ret = cptk_update_firmware(cptk);
if (ret)
goto err_exit5;
}
}
#ifdef CONFIG_PM_RUNTIME
pm_runtime_enable(&client->dev);
#endif
cptk_i2c_write(cptk, KEYCODE_REG, AUTO_CAL_MODE_CMD);
cptk_i2c_write(cptk, CMD_REG, AUTO_CAL_EN_CMD);
ret = request_threaded_irq(client->irq,
NULL,
cptk_irq_thread,
IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
DEVICE_NAME,
cptk);
if (ret < 0) {
dev_err(&client->dev, "failed to register interrupt\n");
goto err_exit5;
}
#ifdef CONFIG_MACH_PXA_SAMSUNG
ret = cptk_create_sec_touchkey(cptk);
if (ret < 0)
goto err_exit6;
#endif
return 0;
err_exit6:
free_irq(client->irq, cptk);
err_exit5:
input_unregister_device(cptk->input_dev);
err_exit4:
gpio_free(pdata->en_pin);
err_exit3:
gpio_free(pdata->gpio);
err_exit2:
kfree(cptk);
err_exit1:
if(IS_ENABLED(CONFIG_OF) && pdata) {
if(pdata->keymap)
devm_kfree(&client->dev, (void *)pdata->keymap);
devm_kfree(&client->dev, (void *)pdata);
}
return ret;
}
static int __devinit cptk_i2c_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct cptk_data *cptk;
int ret;
int i;
cptk = kzalloc(sizeof(struct cptk_data), GFP_KERNEL);
if (!cptk) {
dev_err(&client->dev, "failed to allocate driver data\n");
return -ENOMEM;
}
cptk->input_dev = input_allocate_device();
if (!cptk->input_dev)
return -ENOMEM;
cptk->pdata = client->dev.platform_data;
if (!cptk->pdata) {
ret = -EINVAL;
goto err_exit1;
}
cptk->client = client;
strlcpy(cptk->client->name, "melfas-touchkey",
I2C_NAME_SIZE);
cptk->client->dev.init_name = DEVICE_NAME;
i2c_set_clientdata(client, cptk);
cptk->input_dev->name = DEVICE_NAME;
cptk->input_dev->phys = "melfas-touchkey/input0";
cptk->input_dev->id.bustype = BUS_HOST;
set_bit(EV_SYN, cptk->input_dev->evbit);
set_bit(EV_KEY, cptk->input_dev->evbit);
set_bit(EV_LED, cptk->input_dev->evbit);
set_bit(LED_MISC, cptk->input_dev->ledbit);
for (i = 1; i < cptk->pdata->keymap_size; i++)
set_bit(cptk->pdata->keymap[i], cptk->input_dev->keybit);
ret = input_register_device(cptk->input_dev);
if (ret) {
input_free_device(cptk->input_dev);
return ret;
}
mutex_init(&cptk->i2c_lock);
mutex_init(&cptk->lock);
if (cptk->pdata->power)
cptk->pdata->power(1);
cptk->enable = true;
cptk_i2c_read(cptk, KEYCODE_REG,
cptk->cur_firm_ver,
sizeof(cptk->cur_firm_ver));
pr_info("cptk :firm ver = 0x%x, mod ver = 0x%x\n",
cptk->cur_firm_ver[1], cptk->cur_firm_ver[2]);
if (cptk->cur_firm_ver[1] < cptk->pdata->firm_ver) {
pr_info("cptk: force firmware update\n");
cptk_update_firmware(cptk);
}
#ifdef CONFIG_HAS_EARLYSUSPEND
cptk->early_suspend.level =
EARLY_SUSPEND_LEVEL_BLANK_SCREEN + 2;
cptk->early_suspend.suspend = (void *) cptk_early_suspend;
cptk->early_suspend.resume = (void *) cptk_late_resume;
register_early_suspend(&cptk->early_suspend);
#endif
cptk_i2c_write(cptk, KEYCODE_REG, AUTO_CAL_MODE_CMD);
cptk_i2c_write(cptk, CMD_REG, AUTO_CAL_EN_CMD);
ret = request_threaded_irq(client->irq, NULL, cptk_irq_thread,
IRQF_TRIGGER_LOW | IRQF_ONESHOT,
DEVICE_NAME, cptk);
if (ret < 0)
goto err_exit2;
ret = cptk_create_sec_touchkey(cptk);
if (ret < 0)
goto err_exit2;
return 0;
err_exit2:
err_exit1:
kfree(cptk);
return ret;
}