OMAPDSS: Taal: remove rotate & mirror support

Taal panel driver has support to set rotation and mirroring. However,
these features cannot be used without causing tearing, and are never
used. The code is just extra bloat, so let's remove it.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: Archit Taneja <archit@ti.com>

drivers/video/omap2/displays/panel-taal.c

@@ -76,8 +76,6 @@ struct taal_data {
 
 	/* runtime variables */
 	bool enabled;
-	u8 rotate;
-	bool mirror;
 
 	bool te_enabled;
 
@@ -202,49 +200,6 @@ static int taal_get_id(struct taal_data *td, u8 *id1, u8 *id2, u8 *id3)
 	return 0;
 }
 
-static int taal_set_addr_mode(struct taal_data *td, u8 rotate, bool mirror)
-{
-	int r;
-	u8 mode;
-	int b5, b6, b7;
-
-	r = taal_dcs_read_1(td, MIPI_DCS_GET_ADDRESS_MODE, &mode);
-	if (r)
-		return r;
-
-	switch (rotate) {
-	default:
-	case 0:
-		b7 = 0;
-		b6 = 0;
-		b5 = 0;
-		break;
-	case 1:
-		b7 = 0;
-		b6 = 1;
-		b5 = 1;
-		break;
-	case 2:
-		b7 = 1;
-		b6 = 1;
-		b5 = 0;
-		break;
-	case 3:
-		b7 = 1;
-		b6 = 0;
-		b5 = 1;
-		break;
-	}
-
-	if (mirror)
-		b6 = !b6;
-
-	mode &= ~((1<<7) | (1<<6) | (1<<5));
-	mode |= (b7 << 7) | (b6 << 6) | (b5 << 5);
-
-	return taal_dcs_write_1(td, MIPI_DCS_SET_ADDRESS_MODE, mode);
-}
-
 static int taal_set_update_window(struct taal_data *td,
 		u16 x, u16 y, u16 w, u16 h)
 {
@@ -455,15 +410,8 @@ static const struct backlight_ops taal_bl_ops = {
 static void taal_get_resolution(struct omap_dss_device *dssdev,
 		u16 *xres, u16 *yres)
 {
-	struct taal_data *td = dev_get_drvdata(&dssdev->dev);
-
-	if (td->rotate == 0 || td->rotate == 2) {
-		*xres = dssdev->panel.timings.x_res;
-		*yres = dssdev->panel.timings.y_res;
-	} else {
-		*yres = dssdev->panel.timings.x_res;
-		*xres = dssdev->panel.timings.y_res;
-	}
+	*xres = dssdev->panel.timings.x_res;
+	*yres = dssdev->panel.timings.y_res;
 }
 
 static ssize_t taal_num_errors_show(struct device *dev,
@@ -1025,10 +973,6 @@ static int taal_power_on(struct omap_dss_device *dssdev)
 	if (r)
 		goto err;
 
-	r = taal_set_addr_mode(td, td->rotate, td->mirror);
-	if (r)
-		goto err;
-
 	if (!td->cabc_broken) {
 		r = taal_dcs_write_1(td, DCS_WRITE_CABC, td->cabc_mode);
 		if (r)
@@ -1340,112 +1284,6 @@ static int taal_get_te(struct omap_dss_device *dssdev)
 	return r;
 }
 
-static int taal_rotate(struct omap_dss_device *dssdev, u8 rotate)
-{
-	struct taal_data *td = dev_get_drvdata(&dssdev->dev);
-	u16 dw, dh;
-	int r;
-
-	dev_dbg(&dssdev->dev, "rotate %d\n", rotate);
-
-	mutex_lock(&td->lock);
-
-	if (td->rotate == rotate)
-		goto end;
-
-	dsi_bus_lock(dssdev);
-
-	if (td->enabled) {
-		r = taal_wake_up(dssdev);
-		if (r)
-			goto err;
-
-		r = taal_set_addr_mode(td, rotate, td->mirror);
-		if (r)
-			goto err;
-	}
-
-	if (rotate == 0 || rotate == 2) {
-		dw = dssdev->panel.timings.x_res;
-		dh = dssdev->panel.timings.y_res;
-	} else {
-		dw = dssdev->panel.timings.y_res;
-		dh = dssdev->panel.timings.x_res;
-	}
-
-	omapdss_dsi_set_size(dssdev, dw, dh);
-
-	td->rotate = rotate;
-
-	dsi_bus_unlock(dssdev);
-end:
-	mutex_unlock(&td->lock);
-	return 0;
-err:
-	dsi_bus_unlock(dssdev);
-	mutex_unlock(&td->lock);
-	return r;
-}
-
-static u8 taal_get_rotate(struct omap_dss_device *dssdev)
-{
-	struct taal_data *td = dev_get_drvdata(&dssdev->dev);
-	int r;
-
-	mutex_lock(&td->lock);
-	r = td->rotate;
-	mutex_unlock(&td->lock);
-
-	return r;
-}
-
-static int taal_mirror(struct omap_dss_device *dssdev, bool enable)
-{
-	struct taal_data *td = dev_get_drvdata(&dssdev->dev);
-	int r;
-
-	dev_dbg(&dssdev->dev, "mirror %d\n", enable);
-
-	mutex_lock(&td->lock);
-
-	if (td->mirror == enable)
-		goto end;
-
-	dsi_bus_lock(dssdev);
-	if (td->enabled) {
-		r = taal_wake_up(dssdev);
-		if (r)
-			goto err;
-
-		r = taal_set_addr_mode(td, td->rotate, enable);
-		if (r)
-			goto err;
-	}
-
-	td->mirror = enable;
-
-	dsi_bus_unlock(dssdev);
-end:
-	mutex_unlock(&td->lock);
-	return 0;
-err:
-	dsi_bus_unlock(dssdev);
-	mutex_unlock(&td->lock);
-	return r;
-}
-
-static bool taal_get_mirror(struct omap_dss_device *dssdev)
-{
-	struct taal_data *td = dev_get_drvdata(&dssdev->dev);
-	int r;
-
-	mutex_lock(&td->lock);
-	r = td->mirror;
-	mutex_unlock(&td->lock);
-
-	return r;
-}
-
 static int taal_run_test(struct omap_dss_device *dssdev, int test_num)
 {
 	struct taal_data *td = dev_get_drvdata(&dssdev->dev);
@@ -1679,10 +1517,6 @@ static struct omap_dss_driver taal_driver = {
 	.enable_te	= taal_enable_te,
 	.get_te		= taal_get_te,
 
-	.set_rotate	= taal_rotate,
-	.get_rotate	= taal_get_rotate,
-	.set_mirror	= taal_mirror,
-	.get_mirror	= taal_get_mirror,
 	.run_test	= taal_run_test,
 	.memory_read	= taal_memory_read,