From d5f169218899e975f018c497da85e91a20f17fcf Mon Sep 17 00:00:00 2001
From: Bjorn Andersson <bjorn.andersson@linaro.org>
Date: Mon, 25 Oct 2021 10:09:24 -0700
Subject: drm/bridge: ti-sn65dsi86: Use regmap_bulk_write API
Git-commit: 3c7a8600dec9858da9e76adb622d161f27652b00
Patch-mainline: v5.17-rc1
References: jsc#PED-1166 jsc#PED-1168 jsc#PED-1170 jsc#PED-1218 jsc#PED-1220 jsc#PED-1222 jsc#PED-1223 jsc#PED-1225
The multi-register u16 write operation can use regmap_bulk_write()
instead of two separate regmap_write() calls.
It's uncertain if this has any effect on the actual updates of the
underlying registers, but this at least gives the hardware the
opportunity and saves us one transation on the bus.
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Robert Foss <robert.foss@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20211025170925.3096444-2-bjorn.andersson@linaro.org
Acked-by: Patrik Jakobsson <pjakobsson@suse.de>
---
drivers/gpu/drm/bridge/ti-sn65dsi86.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/bridge/ti-sn65dsi86.c b/drivers/gpu/drm/bridge/ti-sn65dsi86.c
index 6154bed0af5b..5b59d8dd3acd 100644
--- a/drivers/gpu/drm/bridge/ti-sn65dsi86.c
+++ b/drivers/gpu/drm/bridge/ti-sn65dsi86.c
@@ -193,8 +193,9 @@ static const struct regmap_config ti_sn65dsi86_regmap_config = {
static void ti_sn65dsi86_write_u16(struct ti_sn65dsi86 *pdata,
unsigned int reg, u16 val)
{
- regmap_write(pdata->regmap, reg, val & 0xFF);
- regmap_write(pdata->regmap, reg + 1, val >> 8);
+ u8 buf[2] = { val & 0xff, val >> 8 };
+
+ regmap_bulk_write(pdata->regmap, reg, buf, ARRAY_SIZE(buf));
}
static u32 ti_sn_bridge_get_dsi_freq(struct ti_sn65dsi86 *pdata)
--
2.38.1