diff options
| -rw-r--r-- | drivers/gpu/drm/tilcdc/Makefile | 1 | ||||
| -rw-r--r-- | drivers/gpu/drm/tilcdc/tilcdc_drv.h | 2 | ||||
| -rw-r--r-- | drivers/gpu/drm/tilcdc/tilcdc_plane.c | 133 |
3 files changed, 136 insertions, 0 deletions
diff --git a/drivers/gpu/drm/tilcdc/Makefile b/drivers/gpu/drm/tilcdc/Makefile index deeca4869d94..6f675175a9e5 100644 --- a/drivers/gpu/drm/tilcdc/Makefile +++ b/drivers/gpu/drm/tilcdc/Makefile @@ -7,6 +7,7 @@ obj-$(CONFIG_DRM_TILCDC_SLAVE_COMPAT) += tilcdc_slave_compat.o \ tilcdc_slave_compat.dtb.o tilcdc-y := \ + tilcdc_plane.o \ tilcdc_crtc.o \ tilcdc_tfp410.o \ tilcdc_panel.o \ diff --git a/drivers/gpu/drm/tilcdc/tilcdc_drv.h b/drivers/gpu/drm/tilcdc/tilcdc_drv.h index cd78874cb34f..0619c3c88527 100644 --- a/drivers/gpu/drm/tilcdc/tilcdc_drv.h +++ b/drivers/gpu/drm/tilcdc/tilcdc_drv.h @@ -179,4 +179,6 @@ int tilcdc_crtc_page_flip(struct drm_crtc *crtc, struct drm_pending_vblank_event *event, uint32_t page_flip_flags); +int tilcdc_plane_init(struct drm_device *dev, struct drm_plane *plane); + #endif /* __TILCDC_DRV_H__ */ diff --git a/drivers/gpu/drm/tilcdc/tilcdc_plane.c b/drivers/gpu/drm/tilcdc/tilcdc_plane.c new file mode 100644 index 000000000000..d5635d6cbdff --- /dev/null +++ b/drivers/gpu/drm/tilcdc/tilcdc_plane.c @@ -0,0 +1,133 @@ +/* + * Copyright (C) 2015 Texas Instruments + * Author: Jyri Sarha <jsarha@ti.com> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published by + * the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <drm/drmP.h> + +#include <drm/drm_atomic.h> +#include <drm/drm_plane_helper.h> +#include <drm/drm_atomic_helper.h> +#include <uapi/drm/drm_fourcc.h> + +#include "tilcdc_drv.h" + +static const u32 tilcdc_formats[] = { DRM_FORMAT_RGB565, + DRM_FORMAT_RGB888, + DRM_FORMAT_XRGB8888 }; + +static 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, + .set_property = drm_atomic_helper_plane_set_property, + .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 depth, bpp; + + 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; + } + + drm_fb_get_bpp_depth(state->fb->pixel_format, &depth, &bpp); + if (state->fb->pitches[0] != crtc_state->mode.hdisplay * bpp / 8) { + 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->pixel_format != old_state->fb->pixel_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_page_flip(state->crtc, + state->fb, + state->crtc->state->event, + 0); +} + +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) +{ + int ret; + + ret = drm_plane_init(dev, plane, 1, + &tilcdc_plane_funcs, + tilcdc_formats, + ARRAY_SIZE(tilcdc_formats), + 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; +} |