diff options
Diffstat (limited to 'kernel/drivers/gpu/drm/sti/sti_layer.c')
| -rw-r--r-- | kernel/drivers/gpu/drm/sti/sti_layer.c | 213 |
1 files changed, 213 insertions, 0 deletions
diff --git a/kernel/drivers/gpu/drm/sti/sti_layer.c b/kernel/drivers/gpu/drm/sti/sti_layer.c new file mode 100644 index 000000000..899104f9d --- /dev/null +++ b/kernel/drivers/gpu/drm/sti/sti_layer.c @@ -0,0 +1,213 @@ +/* + * Copyright (C) STMicroelectronics SA 2014 + * Authors: Benjamin Gaignard <benjamin.gaignard@st.com> + * Fabien Dessenne <fabien.dessenne@st.com> + * for STMicroelectronics. + * License terms: GNU General Public License (GPL), version 2 + */ + +#include <drm/drmP.h> +#include <drm/drm_gem_cma_helper.h> +#include <drm/drm_fb_cma_helper.h> + +#include "sti_compositor.h" +#include "sti_cursor.h" +#include "sti_gdp.h" +#include "sti_hqvdp.h" +#include "sti_layer.h" +#include "sti_vid.h" + +const char *sti_layer_to_str(struct sti_layer *layer) +{ + switch (layer->desc) { + case STI_GDP_0: + return "GDP0"; + case STI_GDP_1: + return "GDP1"; + case STI_GDP_2: + return "GDP2"; + case STI_GDP_3: + return "GDP3"; + case STI_VID_0: + return "VID0"; + case STI_VID_1: + return "VID1"; + case STI_CURSOR: + return "CURSOR"; + case STI_HQVDP_0: + return "HQVDP0"; + default: + return "<UNKNOWN LAYER>"; + } +} +EXPORT_SYMBOL(sti_layer_to_str); + +struct sti_layer *sti_layer_create(struct device *dev, int desc, + void __iomem *baseaddr) +{ + + struct sti_layer *layer = NULL; + + switch (desc & STI_LAYER_TYPE_MASK) { + case STI_GDP: + layer = sti_gdp_create(dev, desc); + break; + case STI_VID: + layer = sti_vid_create(dev); + break; + case STI_CUR: + layer = sti_cursor_create(dev); + break; + case STI_VDP: + layer = sti_hqvdp_create(dev); + break; + } + + if (!layer) { + DRM_ERROR("Failed to create layer\n"); + return NULL; + } + + layer->desc = desc; + layer->dev = dev; + layer->regs = baseaddr; + + layer->ops->init(layer); + + DRM_DEBUG_DRIVER("%s created\n", sti_layer_to_str(layer)); + + return layer; +} +EXPORT_SYMBOL(sti_layer_create); + +int sti_layer_prepare(struct sti_layer *layer, + struct drm_crtc *crtc, + struct drm_framebuffer *fb, + struct drm_display_mode *mode, int mixer_id, + int dest_x, int dest_y, int dest_w, int dest_h, + int src_x, int src_y, int src_w, int src_h) +{ + int ret; + unsigned int i; + struct drm_gem_cma_object *cma_obj; + + if (!layer || !fb || !mode) { + DRM_ERROR("Null fb, layer or mode\n"); + return 1; + } + + cma_obj = drm_fb_cma_get_gem_obj(fb, 0); + if (!cma_obj) { + DRM_ERROR("Can't get CMA GEM object for fb\n"); + return 1; + } + + layer->crtc = crtc; + layer->fb = fb; + layer->mode = mode; + layer->mixer_id = mixer_id; + layer->dst_x = dest_x; + layer->dst_y = dest_y; + layer->dst_w = clamp_val(dest_w, 0, mode->crtc_hdisplay - dest_x); + layer->dst_h = clamp_val(dest_h, 0, mode->crtc_vdisplay - dest_y); + layer->src_x = src_x; + layer->src_y = src_y; + layer->src_w = src_w; + layer->src_h = src_h; + layer->format = fb->pixel_format; + layer->vaddr = cma_obj->vaddr; + layer->paddr = cma_obj->paddr; + for (i = 0; i < 4; i++) { + layer->pitches[i] = fb->pitches[i]; + layer->offsets[i] = fb->offsets[i]; + } + + DRM_DEBUG_DRIVER("%s is associated with mixer_id %d\n", + sti_layer_to_str(layer), + layer->mixer_id); + DRM_DEBUG_DRIVER("%s dst=(%dx%d)@(%d,%d) - src=(%dx%d)@(%d,%d)\n", + sti_layer_to_str(layer), + layer->dst_w, layer->dst_h, layer->dst_x, layer->dst_y, + layer->src_w, layer->src_h, layer->src_x, + layer->src_y); + + DRM_DEBUG_DRIVER("drm FB:%d format:%.4s phys@:0x%lx\n", fb->base.id, + (char *)&layer->format, (unsigned long)layer->paddr); + + if (!layer->ops->prepare) + goto err_no_prepare; + + ret = layer->ops->prepare(layer, !layer->enabled); + if (!ret) + layer->enabled = true; + + return ret; + +err_no_prepare: + DRM_ERROR("Cannot prepare\n"); + return 1; +} + +int sti_layer_commit(struct sti_layer *layer) +{ + if (!layer) + return 1; + + if (!layer->ops->commit) + goto err_no_commit; + + return layer->ops->commit(layer); + +err_no_commit: + DRM_ERROR("Cannot commit\n"); + return 1; +} + +int sti_layer_disable(struct sti_layer *layer) +{ + int ret; + + DRM_DEBUG_DRIVER("%s\n", sti_layer_to_str(layer)); + if (!layer) + return 1; + + if (!layer->enabled) + return 0; + + if (!layer->ops->disable) + goto err_no_disable; + + ret = layer->ops->disable(layer); + if (!ret) + layer->enabled = false; + else + DRM_ERROR("Disable failed\n"); + + return ret; + +err_no_disable: + DRM_ERROR("Cannot disable\n"); + return 1; +} + +const uint32_t *sti_layer_get_formats(struct sti_layer *layer) +{ + if (!layer) + return NULL; + + if (!layer->ops->get_formats) + return NULL; + + return layer->ops->get_formats(layer); +} + +unsigned int sti_layer_get_nb_formats(struct sti_layer *layer) +{ + if (!layer) + return 0; + + if (!layer->ops->get_nb_formats) + return 0; + + return layer->ops->get_nb_formats(layer); +} |