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drm: atmel-hlcdc: Fix vertical scaling 

The code is applying the same scaling for the X and Y components,
thus making the scaling feature only functional when both components
have the same scaling factor.

Do the s/_w/_h/ replacement where appropriate to fix vertical scaling.

Signed-off-by: Jan Leupold <leupold@rsi-elektrotechnik.de>
Fixes: 1a396789f6 ("drm: add Atmel HLCDC Display Controller support")
Cc: <stable@vger.kernel.org>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
hifive-unleashed-5.1
Jan Leupold 2016-07-06 13:22:35 +02:00 committed by Boris Brezillon
parent 29b4817d40
commit d31ed3f057
1 changed files with 5 additions and 5 deletions
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10
drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c
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@ -320,19 +320,19 @@ atmel_hlcdc_plane_update_pos_and_size(struct atmel_hlcdc_plane *plane,
u32 *coeff_tab = heo_upscaling_ycoef;
u32 max_memsize;
if (state->crtc_w < state->src_w)
if (state->crtc_h < state->src_h)
coeff_tab = heo_downscaling_ycoef;
for (i = 0; i < ARRAY_SIZE(heo_upscaling_ycoef); i++)
atmel_hlcdc_layer_update_cfg(&plane->layer,
33 + i,
0xffffffff,
coeff_tab[i]);
factor = ((8 * 256 * state->src_w) - (256 * 4)) /
state->crtc_w;
factor = ((8 * 256 * state->src_h) - (256 * 4)) /
state->crtc_h;
factor++;
max_memsize = ((factor * state->crtc_w) + (256 * 4)) /
max_memsize = ((factor * state->crtc_h) + (256 * 4)) /
2048;
if (max_memsize > state->src_w)
if (max_memsize > state->src_h)
factor--;
factor_reg |= (factor << 16) | 0x80000000;
}