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drm: mali-dp: Enable image enhancement when scaling 

Apply image enhacement when we are upscaling by a factor of 2
or more in either direction.

Signed-off-by: Mihail Atanassov <mihail.atanassov@arm.com>
Signed-off-by: Liviu Dudau <Liviu.Dudau@arm.com>
This commit is contained in:
Mihail Atanassov 2017-02-06 12:20:56 +00:00 committed by Liviu Dudau
parent 28ce675b74
commit 0274e6a0ba
4 changed files with 42 additions and 1 deletions
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7
drivers/gpu/drm/arm/malidp_crtc.c
View File

@ -288,6 +288,9 @@ static int malidp_crtc_atomic_check_scaling(struct drm_crtc *crtc,
if (!(h_upscale_factor >> 16) || !(v_upscale_factor >> 16))
return -EINVAL;
s->enhancer_enable = ((h_upscale_factor >> 16) >= 2 ||
(v_upscale_factor >> 16) >= 2);
s->input_w = pstate->src_w >> 16;
s->input_h = pstate->src_h >> 16;
s->output_w = pstate->crtc_w;
@ -530,9 +533,11 @@ int malidp_crtc_init(struct drm_device *drm)
drm_crtc_helper_add(&malidp->crtc, &malidp_crtc_helper_funcs);
drm_mode_crtc_set_gamma_size(&malidp->crtc, MALIDP_GAMMA_LUT_SIZE);
/* No inverse-gamma: it is per-plane */
/* No inverse-gamma: it is per-plane. */
drm_crtc_enable_color_mgmt(&malidp->crtc, 0, true, MALIDP_GAMMA_LUT_SIZE);
malidp_se_set_enh_coeffs(malidp->dev);
return 0;
crtc_cleanup_planes:

3
drivers/gpu/drm/arm/malidp_drv.c
View File

@ -138,6 +138,9 @@ static void malidp_atomic_commit_se_config(struct drm_crtc *crtc,
val = malidp_hw_read(hwdev, se_control);
val |= MALIDP_SE_SCALING_EN | MALIDP_SE_ALPHA_EN;
val &= ~MALIDP_SE_ENH(MALIDP_SE_ENH_MASK);
val |= s->enhancer_enable ? MALIDP_SE_ENH(3) : 0;
val |= MALIDP_SE_RGBO_IF_EN;
malidp_hw_write(hwdev, val, se_control);

20
drivers/gpu/drm/arm/malidp_hw.h
View File

@ -71,6 +71,7 @@ enum malidp_scaling_coeff_set {
struct malidp_se_config {
u8 scale_enable : 1;
u8 enhancer_enable : 1;
u8 hcoeff : 3;
u8 vcoeff : 3;
u8 plane_src_id;
@ -295,6 +296,25 @@ malidp_se_select_coeffs(u32 upscale_factor)
#undef FP_0_50000
#undef FP_0_66667
#undef FP_1_00000
static inline void malidp_se_set_enh_coeffs(struct malidp_hw_device *hwdev)
{
static const s32 enhancer_coeffs[] = {
-8, -8, -8, -8, 128, -8, -8, -8, -8
};
u32 val = MALIDP_SE_SET_ENH_LIMIT_LOW(MALIDP_SE_ENH_LOW_LEVEL) |
MALIDP_SE_SET_ENH_LIMIT_HIGH(MALIDP_SE_ENH_HIGH_LEVEL);
u32 image_enh = hwdev->map.se_base +
((hwdev->map.features & MALIDP_REGMAP_HAS_CLEARIRQ) ?
0x10 : 0xC) + MALIDP_SE_IMAGE_ENH;
u32 enh_coeffs = image_enh + MALIDP_SE_ENH_COEFF0;
int i;
malidp_hw_write(hwdev, val, image_enh);
for (i = 0; i < ARRAY_SIZE(enhancer_coeffs); ++i)
malidp_hw_write(hwdev, enhancer_coeffs[i], enh_coeffs + i * 4);
}
/*
* background color components are defined as 12bits values,
* they will be shifted right when stored on hardware that

13
drivers/gpu/drm/arm/malidp_regs.h
View File

@ -109,6 +109,8 @@
/* Scaling engine registers and masks. */
#define MALIDP_SE_SCALING_EN (1 << 0)
#define MALIDP_SE_ALPHA_EN (1 << 1)
#define MALIDP_SE_ENH_MASK 3
#define MALIDP_SE_ENH(x) (((x) & MALIDP_SE_ENH_MASK) << 2)
#define MALIDP_SE_RGBO_IF_EN (1 << 4)
#define MALIDP550_SE_CTL_SEL_MASK 7
#define MALIDP550_SE_CTL_VCSEL(x) \
@ -139,6 +141,17 @@
#define MALIDP_SE_COEFFTAB_DATA_MASK 0x3fff
#define MALIDP_SE_SET_COEFFTAB_DATA(x) \
((x) & MALIDP_SE_COEFFTAB_DATA_MASK)
/* Enhance coeffents reigster offset */
#define MALIDP_SE_IMAGE_ENH 0x3C
/* ENH_LIMITS offset 0x0 */
#define MALIDP_SE_ENH_LOW_LEVEL 24
#define MALIDP_SE_ENH_HIGH_LEVEL 63
#define MALIDP_SE_ENH_LIMIT_MASK 0xfff
#define MALIDP_SE_SET_ENH_LIMIT_LOW(x) \
((x) & MALIDP_SE_ENH_LIMIT_MASK)
#define MALIDP_SE_SET_ENH_LIMIT_HIGH(x) \
(((x) & MALIDP_SE_ENH_LIMIT_MASK) << 16)
#define MALIDP_SE_ENH_COEFF0 0x04
/* register offsets and bits specific to DP500 */
#define MALIDP500_ADDR_SPACE_SIZE 0x01000