drm/panel: jh057n00900: Don't use magic constant

0xBF isn't in any ST7703 data sheet so mark it as unknown. This avoids
confusion on whether there is a missing command in that
dsi_generic_write_seq() call.

Signed-off-by: Guido Günther <agx@sigxcpu.org>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/7f50fa6de2ae029111f158f8ea7fd69a0903eb97.1561542477.git.agx@sigxcpu.org

diff --git a/drivers/gpu/drm/panel/panel-rocktech-jh057n00900.c b/drivers/gpu/drm/panel/panel-rocktech-jh057n00900.c
index 6dcb692..b8a0690 100644 (file)
--- a/drivers/gpu/drm/panel/panel-rocktech-jh057n00900.c
+++ b/drivers/gpu/drm/panel/panel-rocktech-jh057n00900.c
@@ -33,6 +33,7 @@
 #define ST7703_CMD_SETEXTC      0xB9
 #define ST7703_CMD_SETMIPI      0xBA
 #define ST7703_CMD_SETVDC       0xBC
+#define ST7703_CMD_UNKNOWN0     0xBF
 #define ST7703_CMD_SETSCR       0xC0
 #define ST7703_CMD_SETPOWER     0xC1
 #define ST7703_CMD_SETPANEL     0xCC
@@ -94,7 +95,7 @@ static int jh057n_init_sequence(struct jh057n *ctx)
        msleep(20);
 
        dsi_generic_write_seq(dsi, ST7703_CMD_SETVCOM, 0x3F, 0x3F);
-       dsi_generic_write_seq(dsi, 0xBF, 0x02, 0x11, 0x00);
+       dsi_generic_write_seq(dsi, ST7703_CMD_UNKNOWN0, 0x02, 0x11, 0x00);
        dsi_generic_write_seq(dsi, ST7703_CMD_SETGIP1,
                              0x82, 0x10, 0x06, 0x05, 0x9E, 0x0A, 0xA5, 0x12,
                              0x31, 0x23, 0x37, 0x83, 0x04, 0xBC, 0x27, 0x38,