diff options
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/tinydrm/mi0283qt.c | 41 |
1 files changed, 23 insertions, 18 deletions
diff --git a/drivers/gpu/drm/tinydrm/mi0283qt.c b/drivers/gpu/drm/tinydrm/mi0283qt.c index d5ef65179c16..015d03f2acba 100644 --- 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); } |