input: touchscreen: Add regulator to qtouch driver

Change-Id: Ic2461309a9c7b6a6162c4e5fb9b67b6828369938
Signed-off-by: Rebecca Schultz Zavin <rebecca@android.com>

diff --git a/drivers/input/touchscreen/qtouch_obp_ts.c b/drivers/input/touchscreen/qtouch_obp_ts.c
index d45a6e083c1741b69c122896eee6a7e3c8d849f0..915471b53c4f51843271f18c40cddf400c1519f9 100644 (file)
--- a/drivers/input/touchscreen/qtouch_obp_ts.c
+++ b/drivers/input/touchscreen/qtouch_obp_ts.c
@@ -29,6 +29,7 @@
 #include <linux/qtouch_obp_ts.h>
 #include <linux/slab.h>
 #include <linux/firmware.h>
+#include <linux/regulator/consumer.h>
 
 #define IGNORE_CHECKSUM_MISMATCH
 
@@ -101,6 +102,8 @@ struct qtouch_ts_data {
         * MUST enforce that there is no concurrent access to msg_buf. */
        uint8_t                         *msg_buf;
        int                             msg_size;
+
+       struct regulator                *regulator;
 };
 
 #ifdef CONFIG_HAS_EARLYSUSPEND
@@ -1819,6 +1822,10 @@ finish_touch_setup:
                goto err_create_fw_version_file_failed;
        }
 
+       ts->regulator = regulator_get(&ts->client->dev, "vio");
+       if (!IS_ERR_OR_NULL(ts->regulator))
+               regulator_enable(ts->regulator);
+
 #ifdef CONFIG_HAS_EARLYSUSPEND
        ts->early_suspend.level = EARLY_SUSPEND_LEVEL_DISABLE_FB - 1;
        ts->early_suspend.suspend = qtouch_ts_early_suspend;
@@ -1851,6 +1858,9 @@ static int qtouch_ts_remove(struct i2c_client *client)
 {
        struct qtouch_ts_data *ts = i2c_get_clientdata(client);
 
+       if (!IS_ERR_OR_NULL(ts->regulator))
+               regulator_put(ts->regulator);
+
        device_remove_file(&ts->client->dev, &dev_attr_irq_enable);
        device_remove_file(&ts->client->dev, &dev_attr_update_status);
        device_remove_file(&ts->client->dev, &dev_attr_fw_version);
@@ -1891,6 +1901,9 @@ static int qtouch_ts_suspend(struct i2c_client *client, pm_message_t mesg)
        if (ts->pdata->hw_suspend)
                ts->pdata->hw_suspend(1);
 
+       if (!IS_ERR_OR_NULL(ts->regulator))
+               regulator_disable(ts->regulator);
+
        return 0;
 }
 
@@ -1910,6 +1923,9 @@ static int qtouch_ts_resume(struct i2c_client *client)
        if (ts->mode == 1)
                return -EBUSY;
 
+       if (!IS_ERR_OR_NULL(ts->regulator))
+               regulator_enable(ts->regulator);
+
        if (ts->pdata->hw_suspend)
                ts->pdata->hw_suspend(0);