drm/tinydrm/mi0283qt: Always set rotation value

The PiTFT (ili9340) has a hardware reset circuit that resets only
on power-on and not on each reboot through a gpio like the
rpi-display does. As a result, we need to always apply the
rotation value regardless of the display "on/off" state.
Moved the rotation setting code below out_enable:.

Signed-off-by: Tom Callaway <tcallawa@redhat.com>
Reviewed-by: Noralf Trønnes <noralf@tronnes.org>
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20180423161639.14420-1-tcallawa@redhat.com

diff --git a/drivers/gpu/drm/tinydrm/mi0283qt.c b/drivers/gpu/drm/tinydrm/mi0283qt.c
index d5ef651..015d03f 100644 (file)
--- a/drivers/gpu/drm/tinydrm/mi0283qt.c
+++ b/drivers/gpu/drm/tinydrm/mi0283qt.c
@@ -85,24 +85,6 @@ static void mi0283qt_enable(struct drm_simple_display_pipe *pipe,
        /* Memory Access Control */
        mipi_dbi_command(mipi, MIPI_DCS_SET_PIXEL_FORMAT, MIPI_DCS_PIXEL_FMT_16BIT);
 
-       switch (mipi->rotation) {
-       default:
-               addr_mode = ILI9341_MADCTL_MV | ILI9341_MADCTL_MY |
-                           ILI9341_MADCTL_MX;
-               break;
-       case 90:
-               addr_mode = ILI9341_MADCTL_MY;
-               break;
-       case 180:
-               addr_mode = ILI9341_MADCTL_MV;
-               break;
-       case 270:
-               addr_mode = ILI9341_MADCTL_MX;
-               break;
-       }
-       addr_mode |= ILI9341_MADCTL_BGR;
-       mipi_dbi_command(mipi, MIPI_DCS_SET_ADDRESS_MODE, addr_mode);
-
        /* Frame Rate */
        mipi_dbi_command(mipi, ILI9341_FRMCTR1, 0x00, 0x1b);
 
@@ -128,6 +110,29 @@ static void mi0283qt_enable(struct drm_simple_display_pipe *pipe,
        msleep(100);
 
 out_enable:
+       /* The PiTFT (ili9340) has a hardware reset circuit that
+        * resets only on power-on and not on each reboot through
+        * a gpio like the rpi-display does.
+        * As a result, we need to always apply the rotation value
+        * regardless of the display "on/off" state.
+        */
+       switch (mipi->rotation) {
+       default:
+               addr_mode = ILI9341_MADCTL_MV | ILI9341_MADCTL_MY |
+                           ILI9341_MADCTL_MX;
+               break;
+       case 90:
+               addr_mode = ILI9341_MADCTL_MY;
+               break;
+       case 180:
+               addr_mode = ILI9341_MADCTL_MV;
+               break;
+       case 270:
+               addr_mode = ILI9341_MADCTL_MX;
+               break;
+       }
+       addr_mode |= ILI9341_MADCTL_BGR;
+       mipi_dbi_command(mipi, MIPI_DCS_SET_ADDRESS_MODE, addr_mode);
        mipi_dbi_enable_flush(mipi, crtc_state, plane_state);
 }