diff options
Diffstat (limited to 'drivers/input/touchscreen/pixcir_i2c_ts.c')
| -rw-r--r-- | drivers/input/touchscreen/pixcir_i2c_ts.c | 53 |
1 files changed, 41 insertions, 12 deletions
diff --git a/drivers/input/touchscreen/pixcir_i2c_ts.c b/drivers/input/touchscreen/pixcir_i2c_ts.c index 91621725b..09523a3d3 100644 --- a/drivers/input/touchscreen/pixcir_i2c_ts.c +++ b/drivers/input/touchscreen/pixcir_i2c_ts.c @@ -38,6 +38,8 @@ struct pixcir_i2c_ts_data { struct input_dev *input; struct gpio_desc *gpio_attb; struct gpio_desc *gpio_reset; + struct gpio_desc *gpio_enable; + struct gpio_desc *gpio_wake; const struct pixcir_i2c_chip_data *chip; int max_fingers; /* Max fingers supported in this instance */ bool running; @@ -208,6 +210,11 @@ static int pixcir_set_power_mode(struct pixcir_i2c_ts_data *ts, struct device *dev = &ts->client->dev; int ret; + if (mode == PIXCIR_POWER_ACTIVE || mode == PIXCIR_POWER_IDLE) { + if (ts->gpio_wake) + gpiod_set_value_cansleep(ts->gpio_wake, 1); + } + ret = i2c_smbus_read_byte_data(ts->client, PIXCIR_REG_POWER_MODE); if (ret < 0) { dev_err(dev, "%s: can't read reg 0x%x : %d\n", @@ -228,6 +235,11 @@ static int pixcir_set_power_mode(struct pixcir_i2c_ts_data *ts, return ret; } + if (mode == PIXCIR_POWER_HALT) { + if (ts->gpio_wake) + gpiod_set_value_cansleep(ts->gpio_wake, 0); + } + return 0; } @@ -302,6 +314,11 @@ static int pixcir_start(struct pixcir_i2c_ts_data *ts) struct device *dev = &ts->client->dev; int error; + if (ts->gpio_enable) { + gpiod_set_value_cansleep(ts->gpio_enable, 1); + msleep(100); + } + /* LEVEL_TOUCH interrupt with active low polarity */ error = pixcir_set_int_mode(ts, PIXCIR_INT_LEVEL_TOUCH, 0); if (error) { @@ -343,6 +360,9 @@ static int pixcir_stop(struct pixcir_i2c_ts_data *ts) /* Wait till running ISR is complete */ synchronize_irq(ts->client->irq); + if (ts->gpio_enable) + gpiod_set_value_cansleep(ts->gpio_enable, 0); + return 0; } @@ -377,8 +397,6 @@ static int __maybe_unused pixcir_i2c_ts_suspend(struct device *dev) goto unlock; } } - - enable_irq_wake(client->irq); } else if (input->users) { ret = pixcir_stop(ts); } @@ -399,7 +417,6 @@ static int __maybe_unused pixcir_i2c_ts_resume(struct device *dev) mutex_lock(&input->mutex); if (device_may_wakeup(&client->dev)) { - disable_irq_wake(client->irq); if (!input->users) { ret = pixcir_stop(ts); @@ -537,6 +554,27 @@ static int pixcir_i2c_ts_probe(struct i2c_client *client, return error; } + tsdata->gpio_wake = devm_gpiod_get_optional(dev, "wake", + GPIOD_OUT_HIGH); + if (IS_ERR(tsdata->gpio_wake)) { + error = PTR_ERR(tsdata->gpio_wake); + if (error != -EPROBE_DEFER) + dev_err(dev, "Failed to get wake gpio: %d\n", error); + return error; + } + + tsdata->gpio_enable = devm_gpiod_get_optional(dev, "enable", + GPIOD_OUT_HIGH); + if (IS_ERR(tsdata->gpio_enable)) { + error = PTR_ERR(tsdata->gpio_enable); + if (error != -EPROBE_DEFER) + dev_err(dev, "Failed to get enable gpio: %d\n", error); + return error; + } + + if (tsdata->gpio_enable) + msleep(100); + error = devm_request_threaded_irq(dev, client->irq, NULL, pixcir_ts_isr, IRQF_TRIGGER_FALLING | IRQF_ONESHOT, client->name, tsdata); @@ -564,14 +602,6 @@ static int pixcir_i2c_ts_probe(struct i2c_client *client, return error; i2c_set_clientdata(client, tsdata); - device_init_wakeup(&client->dev, 1); - - return 0; -} - -static int pixcir_i2c_ts_remove(struct i2c_client *client) -{ - device_init_wakeup(&client->dev, 0); return 0; } @@ -609,7 +639,6 @@ static struct i2c_driver pixcir_i2c_ts_driver = { .of_match_table = of_match_ptr(pixcir_of_match), }, .probe = pixcir_i2c_ts_probe, - .remove = pixcir_i2c_ts_remove, .id_table = pixcir_i2c_ts_id, }; |