drm: bridge: it66121: Write AVI infoframe with regmap_bulk_write()

Since all AVI infoframe registers are contiguous in the address space,
the AVI infoframe can be written in one go with regmap_bulk_write().

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Reviewed-by: Robert Foss <robert.foss@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20221214125821.12489-5-paul@crapouillou.net

diff --git a/drivers/gpu/drm/bridge/ite-it66121.c b/drivers/gpu/drm/bridge/ite-it66121.c
index 1222284..0a4fdfd 100644 (file)
--- a/drivers/gpu/drm/bridge/ite-it66121.c
+++ b/drivers/gpu/drm/bridge/ite-it66121.c
@@ -773,24 +773,9 @@ void it66121_bridge_mode_set(struct drm_bridge *bridge,
                             const struct drm_display_mode *mode,
                             const struct drm_display_mode *adjusted_mode)
 {
-       int ret, i;
        u8 buf[HDMI_INFOFRAME_SIZE(AVI)];
        struct it66121_ctx *ctx = container_of(bridge, struct it66121_ctx, bridge);
-       const u16 aviinfo_reg[HDMI_AVI_INFOFRAME_SIZE] = {
-               IT66121_AVIINFO_DB1_REG,
-               IT66121_AVIINFO_DB2_REG,
-               IT66121_AVIINFO_DB3_REG,
-               IT66121_AVIINFO_DB4_REG,
-               IT66121_AVIINFO_DB5_REG,
-               IT66121_AVIINFO_DB6_REG,
-               IT66121_AVIINFO_DB7_REG,
-               IT66121_AVIINFO_DB8_REG,
-               IT66121_AVIINFO_DB9_REG,
-               IT66121_AVIINFO_DB10_REG,
-               IT66121_AVIINFO_DB11_REG,
-               IT66121_AVIINFO_DB12_REG,
-               IT66121_AVIINFO_DB13_REG
-       };
+       int ret;
 
        mutex_lock(&ctx->lock);
 
@@ -810,10 +795,12 @@ void it66121_bridge_mode_set(struct drm_bridge *bridge,
        }
 
        /* Write new AVI infoframe packet */
-       for (i = 0; i < HDMI_AVI_INFOFRAME_SIZE; i++) {
-               if (regmap_write(ctx->regmap, aviinfo_reg[i], buf[i + HDMI_INFOFRAME_HEADER_SIZE]))
-                       goto unlock;
-       }
+       ret = regmap_bulk_write(ctx->regmap, IT66121_AVIINFO_DB1_REG,
+                               &buf[HDMI_INFOFRAME_HEADER_SIZE],
+                               HDMI_AVI_INFOFRAME_SIZE);
+       if (ret)
+               goto unlock;
+
        if (regmap_write(ctx->regmap, IT66121_AVIINFO_CSUM_REG, buf[3]))
                goto unlock;