| /* |
| * 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 <drm/drmP.h> |
| |
| #include <drm/exynos_drm.h> |
| #include "exynos_drm_drv.h" |
| #include "exynos_drm_encoder.h" |
| #include "exynos_drm_fb.h" |
| #include "exynos_drm_gem.h" |
| |
| #define to_exynos_plane(x) container_of(x, struct exynos_plane, base) |
| |
| struct exynos_plane { |
| struct drm_plane base; |
| struct exynos_drm_overlay overlay; |
| bool enabled; |
| }; |
| |
| static const uint32_t formats[] = { |
| DRM_FORMAT_XRGB8888, |
| DRM_FORMAT_ARGB8888, |
| DRM_FORMAT_NV12, |
| DRM_FORMAT_NV12MT, |
| }; |
| |
| /* |
| * This function is to get X or Y size shown via screen. This needs length and |
| * start position of CRTC. |
| * |
| * <--- length ---> |
| * CRTC ---------------- |
| * ^ start ^ end |
| * |
| * There are six cases from a to f. |
| * |
| * <----- SCREEN -----> |
| * 0 last |
| * ----------|------------------|---------- |
| * CRTCs |
| * a ------- |
| * b ------- |
| * c -------------------------- |
| * d -------- |
| * e ------- |
| * f ------- |
| */ |
| static int exynos_plane_get_size(int start, unsigned length, unsigned last) |
| { |
| int end = start + length; |
| int size = 0; |
| |
| if (start <= 0) { |
| if (end > 0) |
| size = min_t(unsigned, end, last); |
| } else if (start <= last) { |
| size = min_t(unsigned, last - start, length); |
| } |
| |
| return size; |
| } |
| |
| int exynos_plane_mode_set(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 = to_exynos_plane(plane); |
| struct exynos_drm_overlay *overlay = &exynos_plane->overlay; |
| unsigned int actual_w; |
| unsigned int actual_h; |
| int nr; |
| int i; |
| |
| DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__); |
| |
| nr = exynos_drm_fb_get_buf_cnt(fb); |
| for (i = 0; i < nr; i++) { |
| struct exynos_drm_gem_buf *buffer = exynos_drm_fb_buffer(fb, i); |
| |
| if (!buffer) { |
| DRM_LOG_KMS("buffer is null\n"); |
| return -EFAULT; |
| } |
| |
| overlay->dma_addr[i] = buffer->dma_addr; |
| |
| DRM_DEBUG_KMS("buffer: %d, dma_addr = 0x%lx\n", |
| i, (unsigned long)overlay->dma_addr[i]); |
| } |
| |
| actual_w = exynos_plane_get_size(crtc_x, crtc_w, crtc->mode.hdisplay); |
| actual_h = exynos_plane_get_size(crtc_y, crtc_h, crtc->mode.vdisplay); |
| |
| if (crtc_x < 0) { |
| if (actual_w) |
| src_x -= crtc_x; |
| crtc_x = 0; |
| } |
| |
| if (crtc_y < 0) { |
| if (actual_h) |
| src_y -= crtc_y; |
| crtc_y = 0; |
| } |
| |
| /* set drm framebuffer data. */ |
| overlay->fb_x = src_x; |
| overlay->fb_y = src_y; |
| overlay->fb_width = fb->width; |
| overlay->fb_height = fb->height; |
| overlay->src_width = src_w; |
| overlay->src_height = src_h; |
| overlay->bpp = fb->bits_per_pixel; |
| overlay->pitch = fb->pitches[0]; |
| overlay->pixel_format = fb->pixel_format; |
| |
| /* set overlay range to be displayed. */ |
| overlay->crtc_x = crtc_x; |
| overlay->crtc_y = crtc_y; |
| overlay->crtc_width = actual_w; |
| overlay->crtc_height = actual_h; |
| |
| /* set drm mode data. */ |
| overlay->mode_width = crtc->mode.hdisplay; |
| overlay->mode_height = crtc->mode.vdisplay; |
| overlay->refresh = crtc->mode.vrefresh; |
| overlay->scan_flag = crtc->mode.flags; |
| |
| DRM_DEBUG_KMS("overlay : offset_x/y(%d,%d), width/height(%d,%d)", |
| overlay->crtc_x, overlay->crtc_y, |
| overlay->crtc_width, overlay->crtc_height); |
| |
| exynos_drm_fn_encoder(crtc, overlay, exynos_drm_encoder_plane_mode_set); |
| |
| return 0; |
| } |
| |
| void exynos_plane_commit(struct drm_plane *plane) |
| { |
| struct exynos_plane *exynos_plane = to_exynos_plane(plane); |
| struct exynos_drm_overlay *overlay = &exynos_plane->overlay; |
| |
| exynos_drm_fn_encoder(plane->crtc, &overlay->zpos, |
| exynos_drm_encoder_plane_commit); |
| } |
| |
| void exynos_plane_dpms(struct drm_plane *plane, int mode) |
| { |
| struct exynos_plane *exynos_plane = to_exynos_plane(plane); |
| struct exynos_drm_overlay *overlay = &exynos_plane->overlay; |
| |
| DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__); |
| |
| if (mode == DRM_MODE_DPMS_ON) { |
| if (exynos_plane->enabled) |
| return; |
| |
| exynos_drm_fn_encoder(plane->crtc, &overlay->zpos, |
| exynos_drm_encoder_plane_enable); |
| |
| exynos_plane->enabled = true; |
| } else { |
| if (!exynos_plane->enabled) |
| return; |
| |
| exynos_drm_fn_encoder(plane->crtc, &overlay->zpos, |
| exynos_drm_encoder_plane_disable); |
| |
| exynos_plane->enabled = false; |
| } |
| } |
| |
| 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) |
| { |
| int ret; |
| |
| DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__); |
| |
| ret = exynos_plane_mode_set(plane, crtc, fb, crtc_x, crtc_y, |
| crtc_w, crtc_h, src_x >> 16, src_y >> 16, |
| src_w >> 16, src_h >> 16); |
| if (ret < 0) |
| return ret; |
| |
| plane->crtc = crtc; |
| |
| exynos_plane_commit(plane); |
| exynos_plane_dpms(plane, DRM_MODE_DPMS_ON); |
| |
| return 0; |
| } |
| |
| static int exynos_disable_plane(struct drm_plane *plane) |
| { |
| DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__); |
| |
| exynos_plane_dpms(plane, DRM_MODE_DPMS_OFF); |
| |
| return 0; |
| } |
| |
| static void exynos_plane_destroy(struct drm_plane *plane) |
| { |
| struct exynos_plane *exynos_plane = to_exynos_plane(plane); |
| |
| DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__); |
| |
| exynos_disable_plane(plane); |
| drm_plane_cleanup(plane); |
| kfree(exynos_plane); |
| } |
| |
| static int exynos_plane_set_property(struct drm_plane *plane, |
| struct drm_property *property, |
| uint64_t val) |
| { |
| struct drm_device *dev = plane->dev; |
| struct exynos_plane *exynos_plane = to_exynos_plane(plane); |
| struct exynos_drm_private *dev_priv = dev->dev_private; |
| |
| DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__); |
| |
| if (property == dev_priv->plane_zpos_property) { |
| exynos_plane->overlay.zpos = val; |
| return 0; |
| } |
| |
| return -EINVAL; |
| } |
| |
| static struct drm_plane_funcs exynos_plane_funcs = { |
| .update_plane = exynos_update_plane, |
| .disable_plane = exynos_disable_plane, |
| .destroy = exynos_plane_destroy, |
| .set_property = exynos_plane_set_property, |
| }; |
| |
| static void exynos_plane_attach_zpos_property(struct drm_plane *plane) |
| { |
| struct drm_device *dev = plane->dev; |
| struct exynos_drm_private *dev_priv = dev->dev_private; |
| struct drm_property *prop; |
| |
| DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__); |
| |
| prop = dev_priv->plane_zpos_property; |
| if (!prop) { |
| prop = drm_property_create_range(dev, 0, "zpos", 0, |
| MAX_PLANE - 1); |
| if (!prop) |
| return; |
| |
| dev_priv->plane_zpos_property = prop; |
| } |
| |
| drm_object_attach_property(&plane->base, prop, 0); |
| } |
| |
| struct drm_plane *exynos_plane_init(struct drm_device *dev, |
| unsigned int possible_crtcs, bool priv) |
| { |
| struct exynos_plane *exynos_plane; |
| int err; |
| |
| DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__); |
| |
| exynos_plane = kzalloc(sizeof(struct exynos_plane), GFP_KERNEL); |
| if (!exynos_plane) { |
| DRM_ERROR("failed to allocate plane\n"); |
| return NULL; |
| } |
| |
| err = drm_plane_init(dev, &exynos_plane->base, possible_crtcs, |
| &exynos_plane_funcs, formats, ARRAY_SIZE(formats), |
| priv); |
| if (err) { |
| DRM_ERROR("failed to initialize plane\n"); |
| kfree(exynos_plane); |
| return NULL; |
| } |
| |
| if (priv) |
| exynos_plane->overlay.zpos = DEFAULT_ZPOS; |
| else |
| exynos_plane_attach_zpos_property(&exynos_plane->base); |
| |
| return &exynos_plane->base; |
| } |
