diff options
Diffstat (limited to 'drivers/gpu/drm/tinydrm/core/tinydrm-pipe.c')
| -rw-r--r-- | drivers/gpu/drm/tinydrm/core/tinydrm-pipe.c | 234 |
1 files changed, 0 insertions, 234 deletions
diff --git a/drivers/gpu/drm/tinydrm/core/tinydrm-pipe.c b/drivers/gpu/drm/tinydrm/core/tinydrm-pipe.c deleted file mode 100644 index ec43fb7ad9e4..000000000000 --- a/drivers/gpu/drm/tinydrm/core/tinydrm-pipe.c +++ /dev/null @@ -1,234 +0,0 @@ -/* - * Copyright (C) 2016 Noralf Trønnes - * - * 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/drm_atomic_helper.h> -#include <drm/drm_crtc_helper.h> -#include <drm/drm_modes.h> -#include <drm/tinydrm/tinydrm.h> - -struct tinydrm_connector { - struct drm_connector base; - const struct drm_display_mode *mode; -}; - -static inline struct tinydrm_connector * -to_tinydrm_connector(struct drm_connector *connector) -{ - return container_of(connector, struct tinydrm_connector, base); -} - -static int tinydrm_connector_get_modes(struct drm_connector *connector) -{ - struct tinydrm_connector *tconn = to_tinydrm_connector(connector); - struct drm_display_mode *mode; - - mode = drm_mode_duplicate(connector->dev, tconn->mode); - if (!mode) { - DRM_ERROR("Failed to duplicate mode\n"); - return 0; - } - - if (mode->name[0] == '\0') - drm_mode_set_name(mode); - - mode->type |= DRM_MODE_TYPE_PREFERRED; - drm_mode_probed_add(connector, mode); - - if (mode->width_mm) { - connector->display_info.width_mm = mode->width_mm; - connector->display_info.height_mm = mode->height_mm; - } - - return 1; -} - -static const struct drm_connector_helper_funcs tinydrm_connector_hfuncs = { - .get_modes = tinydrm_connector_get_modes, - .best_encoder = drm_atomic_helper_best_encoder, -}; - -static enum drm_connector_status -tinydrm_connector_detect(struct drm_connector *connector, bool force) -{ - if (drm_device_is_unplugged(connector->dev)) - return connector_status_disconnected; - - return connector->status; -} - -static void tinydrm_connector_destroy(struct drm_connector *connector) -{ - struct tinydrm_connector *tconn = to_tinydrm_connector(connector); - - drm_connector_cleanup(connector); - kfree(tconn); -} - -static const struct drm_connector_funcs tinydrm_connector_funcs = { - .dpms = drm_atomic_helper_connector_dpms, - .reset = drm_atomic_helper_connector_reset, - .detect = tinydrm_connector_detect, - .fill_modes = drm_helper_probe_single_connector_modes, - .destroy = tinydrm_connector_destroy, - .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, - .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, -}; - -struct drm_connector * -tinydrm_connector_create(struct drm_device *drm, - const struct drm_display_mode *mode, - int connector_type) -{ - struct tinydrm_connector *tconn; - struct drm_connector *connector; - int ret; - - tconn = kzalloc(sizeof(*tconn), GFP_KERNEL); - if (!tconn) - return ERR_PTR(-ENOMEM); - - tconn->mode = mode; - connector = &tconn->base; - - drm_connector_helper_add(connector, &tinydrm_connector_hfuncs); - ret = drm_connector_init(drm, connector, &tinydrm_connector_funcs, - connector_type); - if (ret) { - kfree(tconn); - return ERR_PTR(ret); - } - - connector->status = connector_status_connected; - - return connector; -} - -/** - * tinydrm_display_pipe_update - Display pipe update helper - * @pipe: Simple display pipe - * @old_state: Old plane state - * - * This function does a full framebuffer flush if the plane framebuffer - * has changed. It also handles vblank events. Drivers can use this as their - * &drm_simple_display_pipe_funcs->update callback. - */ -void tinydrm_display_pipe_update(struct drm_simple_display_pipe *pipe, - struct drm_plane_state *old_state) -{ - struct tinydrm_device *tdev = pipe_to_tinydrm(pipe); - struct drm_framebuffer *fb = pipe->plane.state->fb; - struct drm_crtc *crtc = &tdev->pipe.crtc; - - if (fb && (fb != old_state->fb)) { - pipe->plane.fb = fb; - if (fb->funcs->dirty) - fb->funcs->dirty(fb, NULL, 0, 0, NULL, 0); - } - - if (crtc->state->event) { - spin_lock_irq(&crtc->dev->event_lock); - drm_crtc_send_vblank_event(crtc, crtc->state->event); - spin_unlock_irq(&crtc->dev->event_lock); - crtc->state->event = NULL; - } -} -EXPORT_SYMBOL(tinydrm_display_pipe_update); - -/** - * tinydrm_display_pipe_prepare_fb - Display pipe prepare_fb helper - * @pipe: Simple display pipe - * @plane_state: Plane state - * - * This function uses drm_fb_cma_prepare_fb() to check if the plane FB has an - * dma-buf attached, extracts the exclusive fence and attaches it to plane - * state for the atomic helper to wait on. Drivers can use this as their - * &drm_simple_display_pipe_funcs->prepare_fb callback. - */ -int tinydrm_display_pipe_prepare_fb(struct drm_simple_display_pipe *pipe, - struct drm_plane_state *plane_state) -{ - return drm_fb_cma_prepare_fb(&pipe->plane, plane_state); -} -EXPORT_SYMBOL(tinydrm_display_pipe_prepare_fb); - -static int tinydrm_rotate_mode(struct drm_display_mode *mode, - unsigned int rotation) -{ - if (rotation == 0 || rotation == 180) { - return 0; - } else if (rotation == 90 || rotation == 270) { - swap(mode->hdisplay, mode->vdisplay); - swap(mode->hsync_start, mode->vsync_start); - swap(mode->hsync_end, mode->vsync_end); - swap(mode->htotal, mode->vtotal); - swap(mode->width_mm, mode->height_mm); - return 0; - } else { - return -EINVAL; - } -} - -/** - * tinydrm_display_pipe_init - Initialize display pipe - * @tdev: tinydrm device - * @funcs: Display pipe functions - * @connector_type: Connector type - * @formats: Array of supported formats (DRM_FORMAT\_\*) - * @format_count: Number of elements in @formats - * @mode: Supported mode - * @rotation: Initial @mode rotation in degrees Counter Clock Wise - * - * This function sets up a &drm_simple_display_pipe with a &drm_connector that - * has one fixed &drm_display_mode which is rotated according to @rotation. - * - * Returns: - * Zero on success, negative error code on failure. - */ -int -tinydrm_display_pipe_init(struct tinydrm_device *tdev, - const struct drm_simple_display_pipe_funcs *funcs, - int connector_type, - const uint32_t *formats, - unsigned int format_count, - const struct drm_display_mode *mode, - unsigned int rotation) -{ - struct drm_device *drm = tdev->drm; - struct drm_display_mode *mode_copy; - struct drm_connector *connector; - int ret; - - mode_copy = devm_kmalloc(drm->dev, sizeof(*mode_copy), GFP_KERNEL); - if (!mode_copy) - return -ENOMEM; - - *mode_copy = *mode; - ret = tinydrm_rotate_mode(mode_copy, rotation); - if (ret) { - DRM_ERROR("Illegal rotation value %u\n", rotation); - return -EINVAL; - } - - drm->mode_config.min_width = mode_copy->hdisplay; - drm->mode_config.max_width = mode_copy->hdisplay; - drm->mode_config.min_height = mode_copy->vdisplay; - drm->mode_config.max_height = mode_copy->vdisplay; - - connector = tinydrm_connector_create(drm, mode_copy, connector_type); - if (IS_ERR(connector)) - return PTR_ERR(connector); - - ret = drm_simple_display_pipe_init(drm, &tdev->pipe, funcs, formats, - format_count, connector); - if (ret) - return ret; - - return 0; -} -EXPORT_SYMBOL(tinydrm_display_pipe_init); |