1 files changed, 40 insertions, 36 deletions

diff --git a/drivers/video/omap2/displays/panel-tfp410.c b/drivers/video/omap2/displays/panel-tfp410.c
index 52637fa..bff306e 100644
--- a/drivers/video/omap2/displays/panel-tfp410.c
+++ b/drivers/video/omap2/displays/panel-tfp410.c
@@ -47,13 +47,9 @@ struct panel_drv_data {
 	struct mutex lock;
 
 	int pd_gpio;
-};
 
-static inline struct tfp410_platform_data
-*get_pdata(const struct omap_dss_device *dssdev)
-{
-	return dssdev->data;
-}
+	struct i2c_adapter *i2c_adapter;
+};
 
 static int tfp410_power_on(struct omap_dss_device *dssdev)
 {
@@ -68,7 +64,7 @@ static int tfp410_power_on(struct omap_dss_device *dssdev)
 		goto err0;
 
 	if (gpio_is_valid(ddata->pd_gpio))
-		gpio_set_value(ddata->pd_gpio, 1);
+		gpio_set_value_cansleep(ddata->pd_gpio, 1);
 
 	return 0;
 err0:
@@ -83,18 +79,18 @@ static void tfp410_power_off(struct omap_dss_device *dssdev)
 		return;
 
 	if (gpio_is_valid(ddata->pd_gpio))
-		gpio_set_value(ddata->pd_gpio, 0);
+		gpio_set_value_cansleep(ddata->pd_gpio, 0);
 
 	omapdss_dpi_display_disable(dssdev);
 }
 
 static int tfp410_probe(struct omap_dss_device *dssdev)
 {
-	struct tfp410_platform_data *pdata = get_pdata(dssdev);
 	struct panel_drv_data *ddata;
 	int r;
+	int i2c_bus_num;
 
-	ddata = kzalloc(sizeof(*ddata), GFP_KERNEL);
+	ddata = devm_kzalloc(&dssdev->dev, sizeof(*ddata), GFP_KERNEL);
 	if (!ddata)
 		return -ENOMEM;
 
@@ -104,10 +100,15 @@ static int tfp410_probe(struct omap_dss_device *dssdev)
 	ddata->dssdev = dssdev;
 	mutex_init(&ddata->lock);
 
-	if (pdata)
+	if (dssdev->data) {
+		struct tfp410_platform_data *pdata = dssdev->data;
+
 		ddata->pd_gpio = pdata->power_down_gpio;
-	else
+		i2c_bus_num = pdata->i2c_bus_num;
+	} else {
 		ddata->pd_gpio = -1;
+		i2c_bus_num = -1;
+	}
 
 	if (gpio_is_valid(ddata->pd_gpio)) {
 		r = gpio_request_one(ddata->pd_gpio, GPIOF_OUT_INIT_LOW,
@@ -115,13 +116,31 @@ static int tfp410_probe(struct omap_dss_device *dssdev)
 		if (r) {
 			dev_err(&dssdev->dev, "Failed to request PD GPIO %d\n",
 					ddata->pd_gpio);
-			ddata->pd_gpio = -1;
+			return r;
 		}
 	}
 
+	if (i2c_bus_num != -1) {
+		struct i2c_adapter *adapter;
+
+		adapter = i2c_get_adapter(i2c_bus_num);
+		if (!adapter) {
+			dev_err(&dssdev->dev, "Failed to get I2C adapter, bus %d\n",
+					i2c_bus_num);
+			r = -EINVAL;
+			goto err_i2c;
+		}
+
+		ddata->i2c_adapter = adapter;
+	}
+
 	dev_set_drvdata(&dssdev->dev, ddata);
 
 	return 0;
+err_i2c:
+	if (gpio_is_valid(ddata->pd_gpio))
+		gpio_free(ddata->pd_gpio);
+	return r;
 }
 
 static void __exit tfp410_remove(struct omap_dss_device *dssdev)
@@ -130,14 +149,15 @@ static void __exit tfp410_remove(struct omap_dss_device *dssdev)
 
 	mutex_lock(&ddata->lock);
 
+	if (ddata->i2c_adapter)
+		i2c_put_adapter(ddata->i2c_adapter);
+
 	if (gpio_is_valid(ddata->pd_gpio))
 		gpio_free(ddata->pd_gpio);
 
 	dev_set_drvdata(&dssdev->dev, NULL);
 
 	mutex_unlock(&ddata->lock);
-
-	kfree(ddata);
 }
 
 static int tfp410_enable(struct omap_dss_device *dssdev)
@@ -269,27 +289,17 @@ static int tfp410_read_edid(struct omap_dss_device *dssdev,
 		u8 *edid, int len)
 {
 	struct panel_drv_data *ddata = dev_get_drvdata(&dssdev->dev);
-	struct tfp410_platform_data *pdata = get_pdata(dssdev);
-	struct i2c_adapter *adapter;
 	int r, l, bytes_read;
 
 	mutex_lock(&ddata->lock);
 
-	if (pdata->i2c_bus_num == 0) {
+	if (!ddata->i2c_adapter) {
 		r = -ENODEV;
 		goto err;
 	}
 
-	adapter = i2c_get_adapter(pdata->i2c_bus_num);
-	if (!adapter) {
-		dev_err(&dssdev->dev, "Failed to get I2C adapter, bus %d\n",
-				pdata->i2c_bus_num);
-		r = -EINVAL;
-		goto err;
-	}
-
 	l = min(EDID_LENGTH, len);
-	r = tfp410_ddc_read(adapter, edid, l, 0);
+	r = tfp410_ddc_read(ddata->i2c_adapter, edid, l, 0);
 	if (r)
 		goto err;
 
@@ -299,7 +309,7 @@ static int tfp410_read_edid(struct omap_dss_device *dssdev,
 	if (len > EDID_LENGTH && edid[0x7e] > 0) {
 		l = min(EDID_LENGTH, len - EDID_LENGTH);
 
-		r = tfp410_ddc_read(adapter, edid + EDID_LENGTH,
+		r = tfp410_ddc_read(ddata->i2c_adapter, edid + EDID_LENGTH,
 				l, EDID_LENGTH);
 		if (r)
 			goto err;
@@ -319,21 +329,15 @@ err:
 static bool tfp410_detect(struct omap_dss_device *dssdev)
 {
 	struct panel_drv_data *ddata = dev_get_drvdata(&dssdev->dev);
-	struct tfp410_platform_data *pdata = get_pdata(dssdev);
-	struct i2c_adapter *adapter;
 	unsigned char out;
 	int r;
 
 	mutex_lock(&ddata->lock);
 
-	if (pdata->i2c_bus_num == 0)
-		goto out;
-
-	adapter = i2c_get_adapter(pdata->i2c_bus_num);
-	if (!adapter)
+	if (!ddata->i2c_adapter)
 		goto out;
 
-	r = tfp410_ddc_read(adapter, &out, 1, 0);
+	r = tfp410_ddc_read(ddata->i2c_adapter, &out, 1, 0);
 
 	mutex_unlock(&ddata->lock);