diff options
Diffstat (limited to 'drivers/gpu/drm/exynos/exynos_drm_plane.c')
| -rw-r--r-- | drivers/gpu/drm/exynos/exynos_drm_plane.c | 163 |
1 files changed, 163 insertions, 0 deletions
diff --git a/drivers/gpu/drm/exynos/exynos_drm_plane.c b/drivers/gpu/drm/exynos/exynos_drm_plane.c new file mode 100644 index 0000000..bdcf770 --- /dev/null +++ b/drivers/gpu/drm/exynos/exynos_drm_plane.c @@ -0,0 +1,163 @@ +/* + * Copyright (C) 2011 Samsung Electronics Co.Ltd + * Authors: Joonyoung Shim <jy0922.shim@samsung.com> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + */ + +#include "drmP.h" + +#include "exynos_drm.h" +#include "exynos_drm_crtc.h" +#include "exynos_drm_drv.h" +#include "exynos_drm_encoder.h" + +struct exynos_plane { + struct drm_plane base; + struct exynos_drm_overlay overlay; + bool enabled; +}; + +static int +exynos_update_plane(struct drm_plane *plane, struct drm_crtc *crtc, + struct drm_framebuffer *fb, int crtc_x, int crtc_y, + unsigned int crtc_w, unsigned int crtc_h, + uint32_t src_x, uint32_t src_y, + uint32_t src_w, uint32_t src_h) +{ + struct exynos_plane *exynos_plane = + container_of(plane, struct exynos_plane, base); + struct exynos_drm_overlay *overlay = &exynos_plane->overlay; + struct exynos_drm_crtc_pos pos; + unsigned int x = src_x >> 16; + unsigned int y = src_y >> 16; + int ret; + + DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__); + + memset(&pos, 0, sizeof(struct exynos_drm_crtc_pos)); + pos.crtc_x = crtc_x; + pos.crtc_y = crtc_y; + pos.crtc_w = crtc_w; + pos.crtc_h = crtc_h; + + pos.fb_x = x; + pos.fb_y = y; + + /* TODO: scale feature */ + ret = exynos_drm_overlay_update(overlay, fb, &crtc->mode, &pos); + if (ret < 0) + return ret; + + exynos_drm_fn_encoder(crtc, overlay, + exynos_drm_encoder_crtc_mode_set); + exynos_drm_fn_encoder(crtc, &overlay->zpos, + exynos_drm_encoder_crtc_plane_commit); + + exynos_plane->enabled = true; + + return 0; +} + +static int exynos_disable_plane(struct drm_plane *plane) +{ + struct exynos_plane *exynos_plane = + container_of(plane, struct exynos_plane, base); + struct exynos_drm_overlay *overlay = &exynos_plane->overlay; + + DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__); + + if (!exynos_plane->enabled) + return 0; + + exynos_drm_fn_encoder(plane->crtc, &overlay->zpos, + exynos_drm_encoder_crtc_disable); + + exynos_plane->enabled = false; + exynos_plane->overlay.zpos = DEFAULT_ZPOS; + + return 0; +} + +static void exynos_plane_destroy(struct drm_plane *plane) +{ + struct exynos_plane *exynos_plane = + container_of(plane, struct exynos_plane, base); + + DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__); + + exynos_disable_plane(plane); + drm_plane_cleanup(plane); + kfree(exynos_plane); +} + +static struct drm_plane_funcs exynos_plane_funcs = { + .update_plane = exynos_update_plane, + .disable_plane = exynos_disable_plane, + .destroy = exynos_plane_destroy, +}; + +int exynos_plane_init(struct drm_device *dev, unsigned int nr) +{ + struct exynos_plane *exynos_plane; + uint32_t possible_crtcs; + + exynos_plane = kzalloc(sizeof(struct exynos_plane), GFP_KERNEL); + if (!exynos_plane) + return -ENOMEM; + + /* all CRTCs are available */ + possible_crtcs = (1 << MAX_CRTC) - 1; + + exynos_plane->overlay.zpos = DEFAULT_ZPOS; + + /* TODO: format */ + return drm_plane_init(dev, &exynos_plane->base, possible_crtcs, + &exynos_plane_funcs, NULL, 0, false); +} + +int exynos_plane_set_zpos_ioctl(struct drm_device *dev, void *data, + struct drm_file *file_priv) +{ + struct drm_exynos_plane_set_zpos *zpos_req = data; + struct drm_mode_object *obj; + struct drm_plane *plane; + struct exynos_plane *exynos_plane; + int ret = 0; + + DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__); + + if (!drm_core_check_feature(dev, DRIVER_MODESET)) + return -EINVAL; + + if (zpos_req->zpos < 0 || zpos_req->zpos >= MAX_PLANE) { + if (zpos_req->zpos != DEFAULT_ZPOS) { + DRM_ERROR("zpos not within limits\n"); + return -EINVAL; + } + } + + mutex_lock(&dev->mode_config.mutex); + + obj = drm_mode_object_find(dev, zpos_req->plane_id, + DRM_MODE_OBJECT_PLANE); + if (!obj) { + DRM_DEBUG_KMS("Unknown plane ID %d\n", + zpos_req->plane_id); + ret = -EINVAL; + goto out; + } + + plane = obj_to_plane(obj); + exynos_plane = container_of(plane, struct exynos_plane, base); + + exynos_plane->overlay.zpos = zpos_req->zpos; + +out: + mutex_unlock(&dev->mode_config.mutex); + return ret; +} |