[PATCH v2 11/20] drm/rockchip: inno-hdmi: switch to FIELD_PREP_WM16 macro

[Nicolas Frattaroli]

The era of hand-rolled HIWORD_UPDATE macros is over, at least for those
drivers that use constant masks.

The inno-hdmi driver's own HIWORD_UPDATE macro is instantiated only
twice. Remove it, and replace its uses with FIELD_PREP_WM16. Since
FIELD_PREP_WM16 shifts the value for us, we replace using the mask as
the value by simply using 1 instead.

With the new FIELD_PREP_WM16 macro, we gain better error checking and a
central shared definition.

This has been compile-tested only as I lack hardware this old, but the
change is trivial enough that I am fairly certain it's equivalent.

Signed-off-by: Nicolas Frattaroli <nicolas.frattaroli@xxxxxxxxxxxxx>
---
 drivers/gpu/drm/rockchip/inno_hdmi.c | 11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/rockchip/inno_hdmi.c b/drivers/gpu/drm/rockchip/inno_hdmi.c
index db4b4038e51d5a963f9ddad568282485ed355040..5b0cb147d95cdd20672d55b93e21e18b32190f69 100644
--- a/drivers/gpu/drm/rockchip/inno_hdmi.c
+++ b/drivers/gpu/drm/rockchip/inno_hdmi.c
@@ -10,6 +10,7 @@
 #include <linux/delay.h>
 #include <linux/err.h>
 #include <linux/hdmi.h>
+#include <linux/hw_bitfield.h>
 #include <linux/mfd/syscon.h>
 #include <linux/mod_devicetable.h>
 #include <linux/module.h>
@@ -31,8 +32,6 @@
 
 #include "inno_hdmi.h"
 
-#define HIWORD_UPDATE(val, mask)	((val) | (mask) << 16)
-
 #define INNO_HDMI_MIN_TMDS_CLOCK  25000000U
 
 #define RK3036_GRF_SOC_CON2	0x148
@@ -392,10 +391,10 @@ static int inno_hdmi_config_video_timing(struct inno_hdmi *hdmi,
 	int value, psync;
 
 	if (hdmi->variant->dev_type == RK3036_HDMI) {
-		psync = mode->flags & DRM_MODE_FLAG_PHSYNC ? RK3036_HDMI_PHSYNC : 0;
-		value = HIWORD_UPDATE(psync, RK3036_HDMI_PHSYNC);
-		psync = mode->flags & DRM_MODE_FLAG_PVSYNC ? RK3036_HDMI_PVSYNC : 0;
-		value |= HIWORD_UPDATE(psync, RK3036_HDMI_PVSYNC);
+		psync = mode->flags & DRM_MODE_FLAG_PHSYNC ? 1 : 0;
+		value = FIELD_PREP_WM16(RK3036_HDMI_PHSYNC, psync);
+		psync = mode->flags & DRM_MODE_FLAG_PVSYNC ? 1 : 0;
+		value |= FIELD_PREP_WM16(RK3036_HDMI_PVSYNC, psync);
 		regmap_write(hdmi->grf, RK3036_GRF_SOC_CON2, value);
 	}
 

-- 
2.50.0