| Message ID | 20230809181525.7561-4-jason-jh.lin@mediatek.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Add connector dynamic selection capability | expand |
On Thu, Aug 10, 2023 at 2:15 AM Jason-JH.Lin <jason-jh.lin@mediatek.com> wrote: > > According to mtk_drm_kms_init(), the all_drm_private array in each > drm private data stores all drm private data in display path order. > > In mtk_drm_get_all_drm_priv(), each element in all_drm_priv should have one > display path private data, such as: > all_drm_priv[CRTC_MAIN] should only have main_path data > all_drm_priv[CRTC_EXT] should only have ext_path data > all_drm_priv[CRTC_THIRD] should only have third_path data > > So we need to add the length checking for each display path before > assigning their drm private data into all_drm_priv array. > > Then the all_drm_private array in each drm private data needs to be > assigned in their display path order. > > Fixes: 1ef7ed48356c ("drm/mediatek: Modify mediatek-drm for mt8195 multi mmsys support") > Signed-off-by: Jason-JH.Lin <jason-jh.lin@mediatek.com> > Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> > Reviewed-by: CK Hu <ck.hu@mediatek.com> Tested-by: Fei Shao <fshao@chromium.org>
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.c b/drivers/gpu/drm/mediatek/mtk_drm_drv.c index 89a38561ba27..c12886f31e54 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_drv.c +++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.c @@ -351,6 +351,7 @@ static bool mtk_drm_get_all_drm_priv(struct device *dev) { struct mtk_drm_private *drm_priv = dev_get_drvdata(dev); struct mtk_drm_private *all_drm_priv[MAX_CRTC]; + struct mtk_drm_private *temp_drm_priv; struct device_node *phandle = dev->parent->of_node; const struct of_device_id *of_id; struct device_node *node; @@ -373,9 +374,18 @@ static bool mtk_drm_get_all_drm_priv(struct device *dev) if (!drm_dev || !dev_get_drvdata(drm_dev)) continue; - all_drm_priv[cnt] = dev_get_drvdata(drm_dev); - if (all_drm_priv[cnt] && all_drm_priv[cnt]->mtk_drm_bound) - cnt++; + temp_drm_priv = dev_get_drvdata(drm_dev); + if (temp_drm_priv) { + if (temp_drm_priv->mtk_drm_bound) + cnt++; + + if (temp_drm_priv->data->main_len) + all_drm_priv[CRTC_MAIN] = temp_drm_priv; + else if (temp_drm_priv->data->ext_len) + all_drm_priv[CRTC_EXT] = temp_drm_priv; + else if (temp_drm_priv->data->third_len) + all_drm_priv[CRTC_THIRD] = temp_drm_priv; + } } if (drm_priv->data->mmsys_dev_num == cnt) {
According to mtk_drm_kms_init(), the all_drm_private array in each drm private data stores all drm private data in display path order. In mtk_drm_get_all_drm_priv(), each element in all_drm_priv should have one display path private data, such as: all_drm_priv[CRTC_MAIN] should only have main_path data all_drm_priv[CRTC_EXT] should only have ext_path data all_drm_priv[CRTC_THIRD] should only have third_path data So we need to add the length checking for each display path before assigning their drm private data into all_drm_priv array. Then the all_drm_private array in each drm private data needs to be assigned in their display path order. Fixes: 1ef7ed48356c ("drm/mediatek: Modify mediatek-drm for mt8195 multi mmsys support") Signed-off-by: Jason-JH.Lin <jason-jh.lin@mediatek.com> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> Reviewed-by: CK Hu <ck.hu@mediatek.com> --- drivers/gpu/drm/mediatek/mtk_drm_drv.c | 16 +++++++++++++--- 1 file changed, 13 insertions(+), 3 deletions(-)