korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-12-02 08:34:20 +08:00
Code Issues Packages Projects Releases Wiki Activity

drm/panel/panel-sitronix-st7701: Fix RTNI calculation

Browse Source 
The RTNI field is multiplied by 16 and incremented by 512 before being
used as the minimum number of pixel clock per horizontal line, hence
it is necessary to subtract those 512 bytes from htotal and then divide
the result by 16 before writing the value into the RTNI field. Fix the
calculation.

Fixes: de2b491784 ("drm/panel/panel-sitronix-st7701: Infer horizontal pixel count from TFT mode")
Signed-off-by: Marek Vasut <marex@denx.de>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20221012221159.88397-1-marex@denx.de
This commit is contained in:
Marek Vasut 2022-10-13 00:11:59 +02:00
parent 2215cb3be5
commit c1cdee9b68
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/gpu/drm/panel/panel-sitronix-st7701.c
View File

@ -244,7 +244,7 @@ static void st7701_init_sequence(struct st7701 *st7701)
DSI_CMD2_BK0_INVSEL_ONES_MASK |
FIELD_PREP(DSI_CMD2_BK0_INVSEL_NLINV_MASK, desc->nlinv),
FIELD_PREP(DSI_CMD2_BK0_INVSEL_RTNI_MASK,
DIV_ROUND_UP(mode->htotal, 16)));
(clamp((u32)mode->htotal, 512U, 1008U) - 512) / 16));
/* Command2, BK1 */
ST7701_DSI(st7701, DSI_CMD2BKX_SEL,