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Subject[PATCH v4 08/14] drm: gma500: remove dead code and pointless local lut storage
Date
The redundant fb helpers .gamma_set and .gamma_get are no longer
used. Remove the dead code and hook up the crtc .gamma_set
to use the crtc gamma_store directly instead of duplicating that
info locally.

Signed-off-by: Peter Rosin <peda@axentia.se>
---
drivers/gpu/drm/gma500/framebuffer.c | 22 --------------------
drivers/gpu/drm/gma500/gma_display.c | 32 ++++++++++--------------------
drivers/gpu/drm/gma500/psb_intel_display.c | 7 +------
drivers/gpu/drm/gma500/psb_intel_drv.h | 1 -
4 files changed, 12 insertions(+), 50 deletions(-)

diff --git a/drivers/gpu/drm/gma500/framebuffer.c b/drivers/gpu/drm/gma500/framebuffer.c
index 7da70b6..2570c7f 100644
--- a/drivers/gpu/drm/gma500/framebuffer.c
+++ b/drivers/gpu/drm/gma500/framebuffer.c
@@ -479,26 +479,6 @@ static struct drm_framebuffer *psb_user_framebuffer_create
return psb_framebuffer_create(dev, cmd, r);
}

-static void psbfb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,
- u16 blue, int regno)
-{
- struct gma_crtc *gma_crtc = to_gma_crtc(crtc);
-
- gma_crtc->lut_r[regno] = red >> 8;
- gma_crtc->lut_g[regno] = green >> 8;
- gma_crtc->lut_b[regno] = blue >> 8;
-}
-
-static void psbfb_gamma_get(struct drm_crtc *crtc, u16 *red,
- u16 *green, u16 *blue, int regno)
-{
- struct gma_crtc *gma_crtc = to_gma_crtc(crtc);
-
- *red = gma_crtc->lut_r[regno] << 8;
- *green = gma_crtc->lut_g[regno] << 8;
- *blue = gma_crtc->lut_b[regno] << 8;
-}
-
static int psbfb_probe(struct drm_fb_helper *helper,
struct drm_fb_helper_surface_size *sizes)
{
@@ -525,8 +505,6 @@ static int psbfb_probe(struct drm_fb_helper *helper,
}

static const struct drm_fb_helper_funcs psb_fb_helper_funcs = {
- .gamma_set = psbfb_gamma_set,
- .gamma_get = psbfb_gamma_get,
.fb_probe = psbfb_probe,
};

diff --git a/drivers/gpu/drm/gma500/gma_display.c b/drivers/gpu/drm/gma500/gma_display.c
index e7fd356..f3c48a2 100644
--- a/drivers/gpu/drm/gma500/gma_display.c
+++ b/drivers/gpu/drm/gma500/gma_display.c
@@ -144,33 +144,32 @@ void gma_crtc_load_lut(struct drm_crtc *crtc)
struct gma_crtc *gma_crtc = to_gma_crtc(crtc);
const struct psb_offset *map = &dev_priv->regmap[gma_crtc->pipe];
int palreg = map->palette;
+ u16 *r, *g, *b;
int i;

/* The clocks have to be on to load the palette. */
if (!crtc->enabled)
return;

+ r = crtc->gamma_store;
+ g = r + crtc->gamma_size;
+ b = g + crtc->gamma_size;
+
if (gma_power_begin(dev, false)) {
for (i = 0; i < 256; i++) {
REG_WRITE(palreg + 4 * i,
- ((gma_crtc->lut_r[i] +
- gma_crtc->lut_adj[i]) << 16) |
- ((gma_crtc->lut_g[i] +
- gma_crtc->lut_adj[i]) << 8) |
- (gma_crtc->lut_b[i] +
- gma_crtc->lut_adj[i]));
+ (((*r++ >> 8) + gma_crtc->lut_adj[i]) << 16) |
+ (((*g++ >> 8) + gma_crtc->lut_adj[i]) << 8) |
+ ((*b++ >> 8) + gma_crtc->lut_adj[i]));
}
gma_power_end(dev);
} else {
for (i = 0; i < 256; i++) {
/* FIXME: Why pipe[0] and not pipe[..._crtc->pipe]? */
dev_priv->regs.pipe[0].palette[i] =
- ((gma_crtc->lut_r[i] +
- gma_crtc->lut_adj[i]) << 16) |
- ((gma_crtc->lut_g[i] +
- gma_crtc->lut_adj[i]) << 8) |
- (gma_crtc->lut_b[i] +
- gma_crtc->lut_adj[i]);
+ (((*r++ >> 8) + gma_crtc->lut_adj[i]) << 16) |
+ (((*g++ >> 8) + gma_crtc->lut_adj[i]) << 8) |
+ ((*b++ >> 8) + gma_crtc->lut_adj[i]);
}

}
@@ -180,15 +179,6 @@ int gma_crtc_gamma_set(struct drm_crtc *crtc, u16 *red, u16 *green, u16 *blue,
u32 size,
struct drm_modeset_acquire_ctx *ctx)
{
- struct gma_crtc *gma_crtc = to_gma_crtc(crtc);
- int i;
-
- for (i = 0; i < size; i++) {
- gma_crtc->lut_r[i] = red[i] >> 8;
- gma_crtc->lut_g[i] = green[i] >> 8;
- gma_crtc->lut_b[i] = blue[i] >> 8;
- }
-
gma_crtc_load_lut(crtc);

return 0;
diff --git a/drivers/gpu/drm/gma500/psb_intel_display.c b/drivers/gpu/drm/gma500/psb_intel_display.c
index 7b6c849..8762efa 100644
--- a/drivers/gpu/drm/gma500/psb_intel_display.c
+++ b/drivers/gpu/drm/gma500/psb_intel_display.c
@@ -518,13 +518,8 @@ void psb_intel_crtc_init(struct drm_device *dev, int pipe,
gma_crtc->pipe = pipe;
gma_crtc->plane = pipe;

- for (i = 0; i < 256; i++) {
- gma_crtc->lut_r[i] = i;
- gma_crtc->lut_g[i] = i;
- gma_crtc->lut_b[i] = i;
-
+ for (i = 0; i < 256; i++)
gma_crtc->lut_adj[i] = 0;
- }

gma_crtc->mode_dev = mode_dev;
gma_crtc->cursor_addr = 0;
diff --git a/drivers/gpu/drm/gma500/psb_intel_drv.h b/drivers/gpu/drm/gma500/psb_intel_drv.h
index 6a10215..e8e4ea1 100644
--- a/drivers/gpu/drm/gma500/psb_intel_drv.h
+++ b/drivers/gpu/drm/gma500/psb_intel_drv.h
@@ -172,7 +172,6 @@ struct gma_crtc {
int plane;
uint32_t cursor_addr;
struct gtt_range *cursor_gt;
- u8 lut_r[256], lut_g[256], lut_b[256];
u8 lut_adj[256];
struct psb_intel_framebuffer *fbdev_fb;
/* a mode_set for fbdev users on this crtc */
--
2.1.4
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