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drm/vc4: crtc: Turn static const variable into a define

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The hvs_latency_pix variable doesn't need to be a variable and can just be
defined.

Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/8535c679f79af8abaa1b7796261bfeda11f874fd.1590594512.git-series.maxime@cerno.tech
This commit is contained in:
Maxime Ripard 2020-05-27 17:47:57 +02:00
parent ae44a52779
commit e58a5e6f41
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GPG Key ID: E3EF0D6F671851C5
1 changed files with 4 additions and 3 deletions
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7
drivers/gpu/drm/vc4/vc4_crtc.c
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@ -44,6 +44,8 @@
#include "vc4_drv.h"
#include "vc4_regs.h"
#define HVS_FIFO_LATENCY_PIX 6
#define CRTC_WRITE(offset, val) writel(val, vc4_crtc->regs + (offset))
#define CRTC_READ(offset) readl(vc4_crtc->regs + (offset))
@ -231,18 +233,17 @@ vc4_crtc_update_gamma_lut(struct drm_crtc *crtc)
static u32 vc4_get_fifo_full_level(u32 format)
{
static const u32 fifo_len_bytes = 64;
static const u32 hvs_latency_pix = 6;
switch (format) {
case PV_CONTROL_FORMAT_DSIV_16:
case PV_CONTROL_FORMAT_DSIC_16:
return fifo_len_bytes - 2 * hvs_latency_pix;
return fifo_len_bytes - 2 * HVS_FIFO_LATENCY_PIX;
case PV_CONTROL_FORMAT_DSIV_18:
return fifo_len_bytes - 14;
case PV_CONTROL_FORMAT_24:
case PV_CONTROL_FORMAT_DSIV_24:
default:
return fifo_len_bytes - 3 * hvs_latency_pix;
return fifo_len_bytes - 3 * HVS_FIFO_LATENCY_PIX;
}
}