diff options
| author | Liu Ying <victor.liu@nxp.com> | 2019-11-26 11:15:11 +0800 |
|---|---|---|
| committer | Liu Ying <victor.liu@nxp.com> | 2019-12-17 14:23:53 +0800 |
| commit | ac3d28840f8d295d78f88c3e045e43225d5d4c44 (patch) | |
| tree | 6693eaafb75d5c8d9b115cda30d142c810935147 /drivers | |
| parent | 4fa5f175ed0ddb8c3b7e819fc639d9cdefbad370 (diff) | |
MLK-23116-7 gpu: imx: imx8_dprc: Don't touch SYSTEM_CTRL0 in dprc_disable() for disp chan
To hot-switch pixel format from a native prefetch engine format to
a non-native one for a display controller, we need to bypass PRG
on-the-fly. The SoC designer requires us not to touch SYSTEM_CTRL0
register during the procedure. Not particularly sure if this
requirement applies to blit engine or not. So, just off-line the
touch for display controller.
Reviewed-by: Sandor Yu <Sandor.yu@nxp.com>
Signed-off-by: Liu Ying <victor.liu@nxp.com>
(cherry picked from commit feb26807aabec0691790a81af8b3a6954deb50cd)
(cherry picked from commit 428e486b770f82964f2480cefa9d73df4fc8b718)
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/imx/imx8_dprc.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/gpu/imx/imx8_dprc.c b/drivers/gpu/imx/imx8_dprc.c index c88365ddb5dc..e25a0a01929d 100644 --- a/drivers/gpu/imx/imx8_dprc.c +++ b/drivers/gpu/imx/imx8_dprc.c @@ -281,7 +281,9 @@ void dprc_disable(struct dprc *dprc) if (WARN_ON(!dprc)) return; - dprc_write(dprc, SHADOW_LOAD_EN | SW_SHADOW_LOAD_SEL, SYSTEM_CTRL0); + if (dprc->is_blit_chan) + dprc_write(dprc, SHADOW_LOAD_EN | SW_SHADOW_LOAD_SEL, + SYSTEM_CTRL0); prg_disable(dprc->prgs[0]); if (dprc->has_aux_prg) |