Re: [PATCH] drm/tinydrm/mi0283qt: Always set rotation value

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Den 24.04.2018 21.16, skrev Daniel Vetter:
On Tue, Apr 24, 2018 at 6:52 PM, Noralf Trønnes <noralf@xxxxxxxxxxx> wrote:
Den 23.04.2018 18.16, skrev Tom Callaway:
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@xxxxxxxxxx>
---
   drivers/gpu/drm/tinydrm/mi0283qt.c | 41
+++++++++++++++++++++-----------------
   1 file changed, 23 insertions(+), 18 deletions(-)

diff --git a/drivers/gpu/drm/tinydrm/mi0283qt.c
b/drivers/gpu/drm/tinydrm/mi0283qt.c
index 4e6d2ee94e55..2bb9e3ce4823 100644
--- a/drivers/gpu/drm/tinydrm/mi0283qt.c
+++ b/drivers/gpu/drm/tinydrm/mi0283qt.c
@@ -84,24 +84,6 @@ 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);
   @@ -127,6 +109,29 @@ 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);
   }


Thanks for fixing this.

Reviewed-by: Noralf Trønnes <noralf@xxxxxxxxxxx>
Tom doesn't have commit rights, so would be on you to get this merged.
-Daniel

Sure, that was my intention, should have mentioned it.

Noralf.

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