diff options
Diffstat (limited to 'drivers/gpu/drm/exynos/exynos_drm_plane.c')
-rw-r--r-- | drivers/gpu/drm/exynos/exynos_drm_plane.c | 303 |
1 files changed, 303 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..83efc66 --- /dev/null +++ b/drivers/gpu/drm/exynos/exynos_drm_plane.c @@ -0,0 +1,303 @@ +/* + * 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; +} |