mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-28 11:18:45 +07:00
fba3baa8d2
The static structure tilcdc_plane_funcs, of type drm_plane_funcs, is used only when passed the fourth argument to drm_plane_init(); however, this fourth parameter is declared as const in the function definition. Hence make tilcdc_plane_funcs constant as well. Issue found with Coccinelle. Signed-off-by: Nishka Dasgupta <nishkadg.linux@gmail.com> Signed-off-by: Jyri Sarha <jsarha@ti.com> Link: https://patchwork.freedesktop.org/patch/msgid/20190813090503.9063-1-nishkadg.linux@gmail.com
117 lines
2.9 KiB
C
117 lines
2.9 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
|
|
/*
|
|
* Copyright (C) 2015 Texas Instruments
|
|
* Author: Jyri Sarha <jsarha@ti.com>
|
|
*/
|
|
|
|
#include <drm/drm_atomic.h>
|
|
#include <drm/drm_plane_helper.h>
|
|
#include <drm/drm_atomic_helper.h>
|
|
#include <drm/drm_fourcc.h>
|
|
|
|
#include "tilcdc_drv.h"
|
|
|
|
static const struct drm_plane_funcs tilcdc_plane_funcs = {
|
|
.update_plane = drm_atomic_helper_update_plane,
|
|
.disable_plane = drm_atomic_helper_disable_plane,
|
|
.destroy = drm_plane_cleanup,
|
|
.reset = drm_atomic_helper_plane_reset,
|
|
.atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
|
|
.atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
|
|
};
|
|
|
|
static int tilcdc_plane_atomic_check(struct drm_plane *plane,
|
|
struct drm_plane_state *state)
|
|
{
|
|
struct drm_crtc_state *crtc_state;
|
|
struct drm_plane_state *old_state = plane->state;
|
|
unsigned int pitch;
|
|
|
|
if (!state->crtc)
|
|
return 0;
|
|
|
|
if (WARN_ON(!state->fb))
|
|
return -EINVAL;
|
|
|
|
if (state->crtc_x || state->crtc_y) {
|
|
dev_err(plane->dev->dev, "%s: crtc position must be zero.",
|
|
__func__);
|
|
return -EINVAL;
|
|
}
|
|
|
|
crtc_state = drm_atomic_get_existing_crtc_state(state->state,
|
|
state->crtc);
|
|
/* we should have a crtc state if the plane is attached to a crtc */
|
|
if (WARN_ON(!crtc_state))
|
|
return 0;
|
|
|
|
if (crtc_state->mode.hdisplay != state->crtc_w ||
|
|
crtc_state->mode.vdisplay != state->crtc_h) {
|
|
dev_err(plane->dev->dev,
|
|
"%s: Size must match mode (%dx%d == %dx%d)", __func__,
|
|
crtc_state->mode.hdisplay, crtc_state->mode.vdisplay,
|
|
state->crtc_w, state->crtc_h);
|
|
return -EINVAL;
|
|
}
|
|
|
|
pitch = crtc_state->mode.hdisplay *
|
|
state->fb->format->cpp[0];
|
|
if (state->fb->pitches[0] != pitch) {
|
|
dev_err(plane->dev->dev,
|
|
"Invalid pitch: fb and crtc widths must be the same");
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (state->fb && old_state->fb &&
|
|
state->fb->format != old_state->fb->format) {
|
|
dev_dbg(plane->dev->dev,
|
|
"%s(): pixel format change requires mode_change\n",
|
|
__func__);
|
|
crtc_state->mode_changed = true;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void tilcdc_plane_atomic_update(struct drm_plane *plane,
|
|
struct drm_plane_state *old_state)
|
|
{
|
|
struct drm_plane_state *state = plane->state;
|
|
|
|
if (!state->crtc)
|
|
return;
|
|
|
|
if (WARN_ON(!state->fb || !state->crtc->state))
|
|
return;
|
|
|
|
tilcdc_crtc_update_fb(state->crtc,
|
|
state->fb,
|
|
state->crtc->state->event);
|
|
}
|
|
|
|
static const struct drm_plane_helper_funcs plane_helper_funcs = {
|
|
.atomic_check = tilcdc_plane_atomic_check,
|
|
.atomic_update = tilcdc_plane_atomic_update,
|
|
};
|
|
|
|
int tilcdc_plane_init(struct drm_device *dev,
|
|
struct drm_plane *plane)
|
|
{
|
|
struct tilcdc_drm_private *priv = dev->dev_private;
|
|
int ret;
|
|
|
|
ret = drm_plane_init(dev, plane, 1,
|
|
&tilcdc_plane_funcs,
|
|
priv->pixelformats,
|
|
priv->num_pixelformats,
|
|
true);
|
|
if (ret) {
|
|
dev_err(dev->dev, "Failed to initialize plane: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
drm_plane_helper_add(plane, &plane_helper_funcs);
|
|
|
|
return 0;
|
|
}
|