[Intel-gfx] [PATCH 1/2] drm: Adding rotation to drm_plane_helper_check_update
sonika
sonika.jindal at intel.com
Tue Jan 13 20:35:53 PST 2015
On Tuesday 13 January 2015 07:02 PM, Ville Syrjälä wrote:
> On Tue, Jan 13, 2015 at 06:03:39PM +0530, Sonika Jindal wrote:
>> Taking rotation into account while checking the plane
>> and adjusting the sizes accordingly.
>>
>> Signed-off-by: Sonika Jindal <sonika.jindal at intel.com>
>> ---
>> drivers/gpu/drm/drm_plane_helper.c | 79 ++++++++++++++++++++++++++++++++++--
>> include/drm/drm_plane_helper.h | 3 +-
>> 2 files changed, 77 insertions(+), 5 deletions(-)
>>
>> diff --git a/drivers/gpu/drm/drm_plane_helper.c b/drivers/gpu/drm/drm_plane_helper.c
>> index f24c4cf..4badd69 100644
>> --- a/drivers/gpu/drm/drm_plane_helper.c
>> +++ b/drivers/gpu/drm/drm_plane_helper.c
>> @@ -138,9 +138,13 @@ int drm_plane_helper_check_update(struct drm_plane *plane,
>> int max_scale,
>> bool can_position,
>> bool can_update_disabled,
>> - bool *visible)
>> + bool *visible,
>> + unsigned int rotation)
>> {
>> int hscale, vscale;
>> + int crtc_x, crtc_y;
>> + unsigned int crtc_w, crtc_h;
>> + uint32_t src_x, src_y, src_w, src_h;
>>
>> if (!fb) {
>> *visible = false;
>> @@ -158,9 +162,13 @@ int drm_plane_helper_check_update(struct drm_plane *plane,
>> return -EINVAL;
>> }
>>
>> + if (fb)
>> + drm_rect_rotate(src, fb->width << 16, fb->height << 16,
>> + rotation);
>> +
>> /* Check scaling */
>> - hscale = drm_rect_calc_hscale(src, dest, min_scale, max_scale);
>> - vscale = drm_rect_calc_vscale(src, dest, min_scale, max_scale);
>> + hscale = drm_rect_calc_hscale_relaxed(src, dest, min_scale, max_scale);
>> + vscale = drm_rect_calc_vscale_relaxed(src, dest, min_scale, max_scale);
> This is an unrelated change. Relaxed scaling allows the the src/dest
> rectangles to be reduced in size in order to keep the scaling ration
> within the min/max range. I suppose we should switch to using it to
> make the behaviour uniform across drivers, but definitely should be
> done with a separate patch.
Since, I added drm_rect_rotate before this, it changes the src sizes and
it was giving me
Invalid scaling if we don't let the sizes to be changed using _relaxed
functions. I am trying this
for 90/270 rotation. I can move it to a separate patch if required.
>> if (hscale < 0 || vscale < 0) {
>> DRM_DEBUG_KMS("Invalid scaling of plane\n");
>> return -ERANGE;
>> @@ -182,6 +190,68 @@ int drm_plane_helper_check_update(struct drm_plane *plane,
>> return -EINVAL;
>> }
>>
>> + crtc_x = dest->x1;
>> + crtc_y = dest->y1;
>> + crtc_w = drm_rect_width(dest);
>> + crtc_h = drm_rect_height(dest);
> You don't adjust these in any way so they are not needed.
>
>> +
>> + if (*visible) {
>> + /* check again in case clipping clamped the results */
>> + hscale = drm_rect_calc_hscale(src, dest,
>> + DRM_PLANE_HELPER_NO_SCALING,
>> + DRM_PLANE_HELPER_NO_SCALING);
> First you allowed scaling and now you don't. What's up with that?
Hmm, so I can simply use min_scale and max_scale here.
>> + if (hscale < 0) {
>> + DRM_DEBUG_KMS("Horizontal scaling factor out of limits\n");
>> + drm_rect_debug_print(src, true);
>> + drm_rect_debug_print(dest, false);
>> +
>> + return hscale;
>> + }
>> +
>> + vscale = drm_rect_calc_vscale(src, dest,
>> + DRM_PLANE_HELPER_NO_SCALING,
>> + DRM_PLANE_HELPER_NO_SCALING);
>> + if (vscale < 0) {
>> + DRM_DEBUG_KMS("Vertical scaling factor out of limits\n");
>> + drm_rect_debug_print(src, true);
>> + drm_rect_debug_print(dest, false);
>> +
>> + return vscale;
>> + }
>> +
>> + /* Make the source viewport size an exact multiple of the scaling factors. */
>> + drm_rect_adjust_size(src,
>> + drm_rect_width(dest) * hscale - drm_rect_width(src),
>> + drm_rect_height(dest) * vscale - drm_rect_height(src));
>> +
>> + drm_rect_rotate_inv(src, fb->width << 16, fb->height << 16,
>> + rotation);
>> +
>> + /*
>> + * Hardware doesn't handle subpixel coordinates.
> That's a purely hardware specific detail. It should not be part of the
> helpers. And in any case the returned src coordinates must remain in
> fixed point format.
>
I was just trying to make it same as what we do in intel_check_sprite_plane.
So, looks like I can remove this one and the other part which you
pointed above.
>> + * Adjust to (macro)pixel boundary, but be careful not to
>> + * increase the source viewport size, because that could
>> + * push the downscaling factor out of bounds.
>> + */
>> + src_x = src->x1 >> 16;
>> + src_w = drm_rect_width(src) >> 16;
>> + src_y = src->y1 >> 16;
>> + src_h = drm_rect_height(src) >> 16;
>> + }
>> +
>> + if (*visible) {
>> + src->x1 = src_x;
>> + src->x2 = src_x + src_w;
>> + src->y1 = src_y;
>> + src->y2 = src_y + src_h;
>> + }
>> +
>> + dest->x1 = crtc_x;
>> + dest->x2 = crtc_x + crtc_w;
>> + dest->y1 = crtc_y;
>> + dest->y2 = crtc_y + crtc_h;
>> +
>> +
>> return 0;
>> }
>> EXPORT_SYMBOL(drm_plane_helper_check_update);
>> @@ -258,7 +328,8 @@ int drm_primary_helper_update(struct drm_plane *plane, struct drm_crtc *crtc,
>> &src, &dest, &clip,
>> DRM_PLANE_HELPER_NO_SCALING,
>> DRM_PLANE_HELPER_NO_SCALING,
>> - false, false, &visible);
>> + false, false, &visible,
>> + DRM_ROTATE_0);
>> if (ret)
>> return ret;
>>
>> diff --git a/include/drm/drm_plane_helper.h b/include/drm/drm_plane_helper.h
>> index a185392..ef9eb04 100644
>> --- a/include/drm/drm_plane_helper.h
>> +++ b/include/drm/drm_plane_helper.h
>> @@ -84,7 +84,8 @@ extern int drm_plane_helper_check_update(struct drm_plane *plane,
>> int max_scale,
>> bool can_position,
>> bool can_update_disabled,
>> - bool *visible);
>> + bool *visible,
>> + unsigned int rotation);
>> extern int drm_primary_helper_update(struct drm_plane *plane,
>> struct drm_crtc *crtc,
>> struct drm_framebuffer *fb,
>> --
>> 1.7.10.4
>>
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