diff options
Diffstat (limited to 'drivers/gpu/drm/pl111/pl111_display.c')
| -rw-r--r-- | drivers/gpu/drm/pl111/pl111_display.c | 54 |
1 files changed, 45 insertions, 9 deletions
diff --git a/drivers/gpu/drm/pl111/pl111_display.c b/drivers/gpu/drm/pl111/pl111_display.c index 19b0d006a54a..a432eb7ad445 100644 --- a/drivers/gpu/drm/pl111/pl111_display.c +++ b/drivers/gpu/drm/pl111/pl111_display.c @@ -223,48 +223,84 @@ static void pl111_display_enable(struct drm_simple_display_pipe *pipe, /* Hard-code TFT panel */ cntl = CNTL_LCDEN | CNTL_LCDTFT | CNTL_LCDVCOMP(1); + /* On the ST Micro variant, assume all 24 bits are connected */ + if (priv->variant->st_bitmux_control) + cntl |= CNTL_ST_CDWID_24; - /* Note that the the hardware's format reader takes 'r' from + /* + * Note that the the ARM hardware's format reader takes 'r' from * the low bit, while DRM formats list channels from high bit - * to low bit as you read left to right. + * to low bit as you read left to right. The ST Micro version of + * the PL110 (LCDC) however uses the standard DRM format. */ switch (fb->format->format) { + case DRM_FORMAT_BGR888: + /* Only supported on the ST Micro variant */ + if (priv->variant->st_bitmux_control) + cntl |= CNTL_ST_LCDBPP24_PACKED | CNTL_BGR; + break; + case DRM_FORMAT_RGB888: + /* Only supported on the ST Micro variant */ + if (priv->variant->st_bitmux_control) + cntl |= CNTL_ST_LCDBPP24_PACKED; + break; case DRM_FORMAT_ABGR8888: case DRM_FORMAT_XBGR8888: - cntl |= CNTL_LCDBPP24; + if (priv->variant->st_bitmux_control) + cntl |= CNTL_LCDBPP24 | CNTL_BGR; + else + cntl |= CNTL_LCDBPP24; break; case DRM_FORMAT_ARGB8888: case DRM_FORMAT_XRGB8888: - cntl |= CNTL_LCDBPP24 | CNTL_BGR; + if (priv->variant->st_bitmux_control) + cntl |= CNTL_LCDBPP24; + else + cntl |= CNTL_LCDBPP24 | CNTL_BGR; break; case DRM_FORMAT_BGR565: if (priv->variant->is_pl110) cntl |= CNTL_LCDBPP16; + else if (priv->variant->st_bitmux_control) + cntl |= CNTL_LCDBPP16 | CNTL_ST_1XBPP_565 | CNTL_BGR; else cntl |= CNTL_LCDBPP16_565; break; case DRM_FORMAT_RGB565: if (priv->variant->is_pl110) - cntl |= CNTL_LCDBPP16; + cntl |= CNTL_LCDBPP16 | CNTL_BGR; + else if (priv->variant->st_bitmux_control) + cntl |= CNTL_LCDBPP16 | CNTL_ST_1XBPP_565; else - cntl |= CNTL_LCDBPP16_565; - cntl |= CNTL_BGR; + cntl |= CNTL_LCDBPP16_565 | CNTL_BGR; break; case DRM_FORMAT_ABGR1555: case DRM_FORMAT_XBGR1555: cntl |= CNTL_LCDBPP16; + if (priv->variant->st_bitmux_control) + cntl |= CNTL_ST_1XBPP_5551 | CNTL_BGR; break; case DRM_FORMAT_ARGB1555: case DRM_FORMAT_XRGB1555: - cntl |= CNTL_LCDBPP16 | CNTL_BGR; + cntl |= CNTL_LCDBPP16; + if (priv->variant->st_bitmux_control) + cntl |= CNTL_ST_1XBPP_5551; + else + cntl |= CNTL_BGR; break; case DRM_FORMAT_ABGR4444: case DRM_FORMAT_XBGR4444: cntl |= CNTL_LCDBPP16_444; + if (priv->variant->st_bitmux_control) + cntl |= CNTL_ST_1XBPP_444 | CNTL_BGR; break; case DRM_FORMAT_ARGB4444: case DRM_FORMAT_XRGB4444: - cntl |= CNTL_LCDBPP16_444 | CNTL_BGR; + cntl |= CNTL_LCDBPP16_444; + if (priv->variant->st_bitmux_control) + cntl |= CNTL_ST_1XBPP_444; + else + cntl |= CNTL_BGR; break; default: WARN_ONCE(true, "Unknown FB format 0x%08x\n", |