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-rw-r--r--drivers/input/touchscreen/ft5x06_ts.c188
1 files changed, 149 insertions, 39 deletions
diff --git a/drivers/input/touchscreen/ft5x06_ts.c b/drivers/input/touchscreen/ft5x06_ts.c
index 48ceadaafd81..e1de4663c0f2 100644
--- a/drivers/input/touchscreen/ft5x06_ts.c
+++ b/drivers/input/touchscreen/ft5x06_ts.c
@@ -405,6 +405,79 @@ static irqreturn_t ft5x06_ts_interrupt(int irq, void *dev_id)
return IRQ_HANDLED;
}
+static int ft5x06_gpio_configure(struct ft5x06_ts_data *data, bool on)
+{
+ int err = 0;
+
+ if (on) {
+ if (gpio_is_valid(data->pdata->irq_gpio)) {
+ err = gpio_request(data->pdata->irq_gpio,
+ "ft5x06_irq_gpio");
+ if (err) {
+ dev_err(&data->client->dev,
+ "irq gpio request failed");
+ goto err_irq_gpio_req;
+ }
+
+ err = gpio_direction_input(data->pdata->irq_gpio);
+ if (err) {
+ dev_err(&data->client->dev,
+ "set_direction for irq gpio failed\n");
+ goto err_irq_gpio_dir;
+ }
+ }
+
+ if (gpio_is_valid(data->pdata->reset_gpio)) {
+ err = gpio_request(data->pdata->reset_gpio,
+ "ft5x06_reset_gpio");
+ if (err) {
+ dev_err(&data->client->dev,
+ "reset gpio request failed");
+ goto err_irq_gpio_dir;
+ }
+
+ err = gpio_direction_output(data->pdata->reset_gpio, 0);
+ if (err) {
+ dev_err(&data->client->dev,
+ "set_direction for reset gpio failed\n");
+ goto err_reset_gpio_dir;
+ }
+ msleep(data->pdata->hard_rst_dly);
+ gpio_set_value_cansleep(data->pdata->reset_gpio, 1);
+ }
+
+ return 0;
+ }
+ if (gpio_is_valid(data->pdata->irq_gpio))
+ gpio_free(data->pdata->irq_gpio);
+ if (gpio_is_valid(data->pdata->reset_gpio)) {
+ /*
+ * This is intended to save leakage current
+ * only. Even if the call(gpio_direction_input)
+ * fails, only leakage current will be more but
+ * functionality will not be affected.
+ */
+ err = gpio_direction_input(data->pdata->reset_gpio);
+ if (err) {
+ dev_err(&data->client->dev,
+ "unable to set direction for gpio [%d]\n",
+ data->pdata->irq_gpio);
+ }
+ gpio_free(data->pdata->reset_gpio);
+ }
+
+ return 0;
+
+err_reset_gpio_dir:
+ if (gpio_is_valid(data->pdata->reset_gpio))
+ gpio_free(data->pdata->reset_gpio);
+err_irq_gpio_dir:
+ if (gpio_is_valid(data->pdata->irq_gpio))
+ gpio_free(data->pdata->irq_gpio);
+err_irq_gpio_req:
+ return err;
+}
+
static int ft5x06_power_on(struct ft5x06_ts_data *data, bool on)
{
int rc;
@@ -618,10 +691,40 @@ static int ft5x06_ts_suspend(struct device *dev)
}
}
+ if (data->ts_pinctrl) {
+ err = pinctrl_select_state(data->ts_pinctrl,
+ data->pinctrl_state_suspend);
+ if (err < 0)
+ dev_err(dev, "Cannot get suspend pinctrl state\n");
+ }
+
+ err = ft5x06_gpio_configure(data, false);
+ if (err < 0) {
+ dev_err(&data->client->dev,
+ "failed to put gpios in suspend state\n");
+ goto gpio_configure_fail;
+ }
+
data->suspended = true;
return 0;
+gpio_configure_fail:
+ if (data->ts_pinctrl) {
+ err = pinctrl_select_state(data->ts_pinctrl,
+ data->pinctrl_state_active);
+ if (err < 0)
+ dev_err(dev, "Cannot get active pinctrl state\n");
+ }
+ if (data->pdata->power_on) {
+ err = data->pdata->power_on(true);
+ if (err)
+ dev_err(dev, "power on failed");
+ } else {
+ err = ft5x06_power_on(data, true);
+ if (err)
+ dev_err(dev, "power on failed");
+ }
pwr_off_fail:
if (gpio_is_valid(data->pdata->reset_gpio)) {
gpio_set_value_cansleep(data->pdata->reset_gpio, 0);
@@ -656,6 +759,20 @@ static int ft5x06_ts_resume(struct device *dev)
}
}
+ if (data->ts_pinctrl) {
+ err = pinctrl_select_state(data->ts_pinctrl,
+ data->pinctrl_state_active);
+ if (err < 0)
+ dev_err(dev, "Cannot get active pinctrl state\n");
+ }
+
+ err = ft5x06_gpio_configure(data, true);
+ if (err < 0) {
+ dev_err(&data->client->dev,
+ "failed to put gpios in resue state\n");
+ goto err_gpio_configuration;
+ }
+
if (gpio_is_valid(data->pdata->reset_gpio)) {
gpio_set_value_cansleep(data->pdata->reset_gpio, 0);
msleep(data->pdata->hard_rst_dly);
@@ -669,6 +786,24 @@ static int ft5x06_ts_resume(struct device *dev)
data->suspended = false;
return 0;
+
+err_gpio_configuration:
+ if (data->ts_pinctrl) {
+ err = pinctrl_select_state(data->ts_pinctrl,
+ data->pinctrl_state_suspend);
+ if (err < 0)
+ dev_err(dev, "Cannot get suspend pinctrl state\n");
+ }
+ if (data->pdata->power_on) {
+ err = data->pdata->power_on(false);
+ if (err)
+ dev_err(dev, "power off failed");
+ } else {
+ err = ft5x06_power_on(data, false);
+ if (err)
+ dev_err(dev, "power off failed");
+ }
+ return err;
}
static const struct dev_pm_ops ft5x06_ts_pm_ops = {
@@ -1604,46 +1739,24 @@ static int ft5x06_ts_probe(struct i2c_client *client,
err = ft5x06_ts_pinctrl_init(data);
if (!err && data->ts_pinctrl) {
+ /*
+ * Pinctrl handle is optional. If pinctrl handle is found
+ * let pins to be configured in active state. If not
+ * found continue further without error.
+ */
err = pinctrl_select_state(data->ts_pinctrl,
data->pinctrl_state_active);
if (err < 0) {
dev_err(&client->dev,
"failed to select pin to active state");
- goto pinctrl_deinit;
- }
- } else {
- goto pwr_off;
- }
-
- if (gpio_is_valid(pdata->irq_gpio)) {
- err = gpio_request(pdata->irq_gpio, "ft5x06_irq_gpio");
- if (err) {
- dev_err(&client->dev, "irq gpio request failed");
- goto err_gpio_req;
- }
- err = gpio_direction_input(pdata->irq_gpio);
- if (err) {
- dev_err(&client->dev,
- "set_direction for irq gpio failed\n");
- goto free_irq_gpio;
}
}
- if (gpio_is_valid(pdata->reset_gpio)) {
- err = gpio_request(pdata->reset_gpio, "ft5x06_reset_gpio");
- if (err) {
- dev_err(&client->dev, "reset gpio request failed");
- goto free_irq_gpio;
- }
-
- err = gpio_direction_output(pdata->reset_gpio, 0);
- if (err) {
- dev_err(&client->dev,
- "set_direction for reset gpio failed\n");
- goto free_reset_gpio;
- }
- msleep(data->pdata->hard_rst_dly);
- gpio_set_value_cansleep(data->pdata->reset_gpio, 1);
+ err = ft5x06_gpio_configure(data, true);
+ if (err < 0) {
+ dev_err(&client->dev,
+ "Failed to configure the gpios\n");
+ goto err_gpio_req;
}
/* make sure CTP already finish startup process */
@@ -1654,14 +1767,14 @@ static int ft5x06_ts_probe(struct i2c_client *client,
err = ft5x06_i2c_read(client, &reg_addr, 1, &reg_value, 1);
if (err < 0) {
dev_err(&client->dev, "version read failed");
- goto free_reset_gpio;
+ goto free_gpio;
}
dev_info(&client->dev, "Device ID = 0x%x\n", reg_value);
if ((pdata->family_id != reg_value) && (!pdata->ignore_id_check)) {
dev_err(&client->dev, "%s:Unsupported controller\n", __func__);
- goto free_reset_gpio;
+ goto free_gpio;
}
data->family_id = pdata->family_id;
@@ -1672,7 +1785,7 @@ static int ft5x06_ts_probe(struct i2c_client *client,
client->dev.driver->name, data);
if (err) {
dev_err(&client->dev, "request irq failed\n");
- goto free_reset_gpio;
+ goto free_gpio;
}
err = device_create_file(&client->dev, &dev_attr_fw_name);
@@ -1789,14 +1902,12 @@ free_fw_name_sys:
device_remove_file(&client->dev, &dev_attr_fw_name);
irq_free:
free_irq(client->irq, data);
-free_reset_gpio:
+free_gpio:
if (gpio_is_valid(pdata->reset_gpio))
gpio_free(pdata->reset_gpio);
-free_irq_gpio:
if (gpio_is_valid(pdata->irq_gpio))
gpio_free(pdata->irq_gpio);
err_gpio_req:
-pinctrl_deinit:
if (data->ts_pinctrl) {
if (IS_ERR_OR_NULL(data->pinctrl_state_release)) {
devm_pinctrl_put(data->ts_pinctrl);
@@ -1808,7 +1919,6 @@ pinctrl_deinit:
pr_err("failed to select relase pinctrl state\n");
}
}
-pwr_off:
if (pdata->power_on)
pdata->power_on(false);
else
generated by cgit v1.2.3 (git 2.25.1) at 2026-08-11 00:04:51 +0000