On 09/29/2016 11:37 AM, Daniel Vetter wrote:
> On Mon, Sep 26, 2016 at 03:01:04PM +0200, Marek Vasut wrote:
>> Remove the common code from the driver and use the drm_fb_cma_setup_fence()
>> helper instead. Moveover, call the helper from prepare_fb() plane hook .
>>
>> Signed-off-by: Marek Vasut <marex@xxxxxxx>
>> Cc: Daniel Vetter <daniel.vetter@xxxxxxxx>
>> Cc: Lucas Stach <l.stach@xxxxxxxxxxxxxx>
>> ---
>> drivers/gpu/drm/imx/imx-drm-core.c | 30 +-----------------------------
>> drivers/gpu/drm/imx/ipuv3-plane.c | 8 ++++++++
>> 2 files changed, 9 insertions(+), 29 deletions(-)
>>
>> diff --git a/drivers/gpu/drm/imx/imx-drm-core.c b/drivers/gpu/drm/imx/imx-drm-core.c
>> index 98df09c..c7faa1f 100644
>> --- a/drivers/gpu/drm/imx/imx-drm-core.c
>> +++ b/drivers/gpu/drm/imx/imx-drm-core.c
>> @@ -18,7 +18,6 @@
>> #include <linux/dma-buf.h>
>> #include <linux/module.h>
>> #include <linux/platform_device.h>
>> -#include <linux/reservation.h>
>> #include <drm/drmP.h>
>> #include <drm/drm_atomic.h>
>> #include <drm/drm_atomic_helper.h>
>> @@ -151,38 +150,11 @@ static int imx_drm_atomic_check(struct drm_device *dev,
>> return ret;
>> }
>>
>> -static int imx_drm_atomic_commit(struct drm_device *dev,
>> - struct drm_atomic_state *state,
>> - bool nonblock)
>> -{
>> - struct drm_plane_state *plane_state;
>> - struct drm_plane *plane;
>> - struct dma_buf *dma_buf;
>> - int i;
>> -
>> - /*
>> - * If the plane fb has an dma-buf attached, fish out the exclusive
>> - * fence for the atomic helper to wait on.
>> - */
>> - for_each_plane_in_state(state, plane, plane_state, i) {
>> - if ((plane->state->fb != plane_state->fb) && plane_state->fb) {
>> - dma_buf = drm_fb_cma_get_gem_obj(plane_state->fb,
>> - 0)->base.dma_buf;
>> - if (!dma_buf)
>> - continue;
>> - plane_state->fence =
>> - reservation_object_get_excl_rcu(dma_buf->resv);
>> - }
>> - }
>> -
>> - return drm_atomic_helper_commit(dev, state, nonblock);
>> -}
>> -
>> static const struct drm_mode_config_funcs imx_drm_mode_config_funcs = {
>> .fb_create = drm_fb_cma_create,
>> .output_poll_changed = imx_drm_output_poll_changed,
>> .atomic_check = imx_drm_atomic_check,
>> - .atomic_commit = imx_drm_atomic_commit,
>> + .atomic_commit = drm_atomic_helper_commit,
>> };
>>
>> static void imx_drm_atomic_commit_tail(struct drm_atomic_state *state)
>> diff --git a/drivers/gpu/drm/imx/ipuv3-plane.c b/drivers/gpu/drm/imx/ipuv3-plane.c
>> index ce22d0a..50615e3 100644
>> --- a/drivers/gpu/drm/imx/ipuv3-plane.c
>> +++ b/drivers/gpu/drm/imx/ipuv3-plane.c
>> @@ -250,6 +250,13 @@ static const struct drm_plane_funcs ipu_plane_funcs = {
>> .atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
>> };
>>
>> +static int ipu_plane_prepare_fb(struct drm_plane *plane,
>> + struct drm_plane_state *state)
>> +{
>> + drm_fb_cma_setup_fence(plane, state);
>> + return 0;
>> +}
>> +
>> static int ipu_plane_atomic_check(struct drm_plane *plane,
>> struct drm_plane_state *state)
>> {
>> @@ -442,6 +449,7 @@ static void ipu_plane_atomic_update(struct drm_plane *plane,
>> }
>>
>> static const struct drm_plane_helper_funcs ipu_plane_helper_funcs = {
>> + .prepare_fb = ipu_plane_prepare_fb,
>
> See my coment about the function naming, but imo drm_fb_cma_prepare_fb
You mean drm_fb_cma_setup_fence() , so it can be used directly in
.prepare_fb ?
> should have a function type matching prepare_fb. Otherwise every driver
> needs a dummy wrapper function like ipu_plane_prepare_fb, which imo would
> be pointless.
Indeed.
> -Daniel
>
>> .atomic_check = ipu_plane_atomic_check,
>> .atomic_disable = ipu_plane_atomic_disable,
>> .atomic_update = ipu_plane_atomic_update,
>> --
>> 2.9.3
>>
>
--
Best regards,
Marek Vasut
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