Hi, Jitao: On Thu, 2019-09-19 at 14:58 +0800, Jitao Shi wrote: > The writeb() is unavailable in mt8173. Because the mt8173 dsi module > doesn't support 8bit mode access. Reviewed-by: CK Hu <ck.hu@xxxxxxxxxxxx> > > Signed-off-by: Jitao Shi <jitao.shi@xxxxxxxxxxxx> > --- > drivers/gpu/drm/mediatek/mtk_dsi.c | 4 +++- > 1 file changed, 3 insertions(+), 1 deletion(-) > > diff --git a/drivers/gpu/drm/mediatek/mtk_dsi.c b/drivers/gpu/drm/mediatek/mtk_dsi.c > index 7e24d03cdccc..ac8e80e379f7 100644 > --- a/drivers/gpu/drm/mediatek/mtk_dsi.c > +++ b/drivers/gpu/drm/mediatek/mtk_dsi.c > @@ -960,7 +960,9 @@ static void mtk_dsi_cmdq(struct mtk_dsi *dsi, const struct mipi_dsi_msg *msg) > } > > for (i = 0; i < msg->tx_len; i++) > - writeb(tx_buf[i], dsi->regs + reg_cmdq_off + cmdq_off + i); > + mtk_dsi_mask(dsi, (reg_cmdq_off + cmdq_off + i) & (~0x3U), > + (0xffUL << (((i + cmdq_off) & 3U) * 8U)), > + tx_buf[i] << (((i + cmdq_off) & 3U) * 8U)); > > mtk_dsi_mask(dsi, reg_cmdq_off, cmdq_mask, reg_val); > mtk_dsi_mask(dsi, DSI_CMDQ_SIZE, CMDQ_SIZE, cmdq_size); _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
