static ssize_t touchkey_idac1_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct cptk_data *tkey_i2c = dev_get_drvdata(dev);
u8 data = -1;
cptk_i2c_read(tkey_i2c, IDAC_REG+1, &data, sizeof(data));
return sprintf(buf, "%d\n", data);
}
static ssize_t touchkey_threshold_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct cptk_data *tkey_i2c = dev_get_drvdata(dev);
u8 data;
int ret;
ret = cptk_i2c_read(tkey_i2c, THRESHOLD_REG, &data, sizeof(data));
return sprintf(buf, "%d\n", data);
}
static ssize_t touchkey_raw_data1_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct cptk_data *tkey_i2c = dev_get_drvdata(dev);
u8 data[2];
u16 raw_data1 = 0;
if (cptk_i2c_read(tkey_i2c, RAW_DATA_REG + 2, data, sizeof(data)) >= 0)
raw_data1 = ((0x00FF & data[0]) << 8) | data[1];
return sprintf(buf, "%d\n", raw_data1);
}
static ssize_t touchkey_autocal_status_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct cptk_data *tkey_i2c = dev_get_drvdata(dev);
u8 data;
int ret;
ret = cptk_i2c_read(tkey_i2c, AUTOCAL_REG, &data, sizeof(data));
if (data & TK_BIT_AUTOCAL)
return sprintf(buf, "Enabled\n");
return sprintf(buf, "Disabled\n");
}
static void cptk_update_firmware_cb(const struct firmware *fw, void *context)
{
int ret;
struct cptk_data *cptk = context;
struct device *dev = &cptk->input_dev->dev;
int retries = 3;
pr_info("cptk: firware download start\n");
if (fw->size != FW_SIZE) {
dev_err(dev, "%s: Firmware file size invalid size:%d\n",
__func__, fw->size);
return;
}
mutex_lock(&cptk->lock);
disable_irq(cptk->client->irq);
/* Lock the i2c bus since the firmware updater accesses it */
i2c_lock_adapter(cptk->client->adapter);
while (retries--) {
ret = touchkey_flash_firmware(cptk->pdata, fw->data);
if (!ret)
break;
}
if (ret) {
cptk->touchkey_update_status = -1;
dev_err(dev, "%s: Firmware update failed\n", __func__);
} else {
cptk->touchkey_update_status = 0;
pr_info("cptk: firware download finished\n");
}
i2c_unlock_adapter(cptk->client->adapter);
enable_irq(cptk->client->irq);
release_firmware(fw);
mutex_unlock(&cptk->lock);
cptk_i2c_read(cptk, KEYCODE_REG, cptk->cur_firm_ver,
sizeof(cptk->cur_firm_ver));
pr_info("cptk: current firm ver = 0x%.2x, latest firm ver = 0x%.2x\n",
cptk->cur_firm_ver[1], cptk->pdata->firm_ver);
return;
}
static ssize_t touchkey_menu_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct cptk_data *cptk = dev_get_drvdata(dev);
u8 data[2];
int menu_sensitivity = 0;
mutex_lock(&cptk->lock);
if (cptk_i2c_read(cptk, DIFF_DATA_REG, data, sizeof(data)) >= 0)
menu_sensitivity = ((0x00FF&data[0])<<8)|data[1];
pr_debug("cptk: menu_sensitivity = %d\n", menu_sensitivity);
mutex_unlock(&cptk->lock);
return sprintf(buf, "%d\n", menu_sensitivity);
}
static ssize_t touchkey_back_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
u8 data[2];
int ret;
int back_sensitivity;
struct cptk_data *cptk = dev_get_drvdata(dev);
mutex_lock(&cptk->lock);
ret = cptk_i2c_read(cptk, DIFF_DATA_REG + 2,
data, sizeof(data));
back_sensitivity = ((0x00FF&data[0])<<8)|data[1];
pr_debug("cptk : back_sensitivity = %d\n", back_sensitivity);
mutex_unlock(&cptk->lock);
return sprintf(buf, "%d\n", back_sensitivity);
}
static ssize_t set_touchkey_firm_version_read_show
(struct device *dev, struct device_attribute *attr, char *buf)
{
char data[3] = { 0, };
int count, ret;
struct cptk_data *cptk = dev_get_drvdata(dev);
mutex_lock(&cptk->lock);
ret = cptk_i2c_read(cptk, KEYCODE_REG, data, 3);
if (ret) {
pr_err("cptk : %s: error in cptk_i2c_read\n" , __func__);
mutex_unlock(&cptk->lock);
return ret;
}
mutex_unlock(&cptk->lock);
count = sprintf(buf, "0x%X\n", data[1]);
pr_debug("cptk :touch_version_read 0x%X\n", data[1]);
return count;
}
static irqreturn_t cptk_irq_thread(int irq, void *data)
{
struct cptk_data *cptk = data;
int ret;
u8 keycode;
mutex_lock(&cptk->lock);
if (!gpio_get_value(cptk->pdata->gpio)) {
ret = cptk_i2c_read(cptk, KEYCODE_REG, &keycode, 1);
if (keycode & UPDOWN_EVENT_BIT)
input_report_key(cptk->input_dev,
cptk->pdata->keymap[keycode &
KEYCODE_BIT], 0);
else
input_report_key(cptk->input_dev,
cptk->pdata->keymap[keycode &
KEYCODE_BIT], 1);
input_sync(cptk->input_dev);
}
mutex_unlock(&cptk->lock);
return IRQ_HANDLED;
}
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;
}