2 * Copyright (C) Fuzhou Rockchip Electronics Co.Ltd
3 * Author:Mark Yao <mark.yao@rock-chips.com>
5 * based on exynos_drm_drv.c
7 * This software is licensed under the terms of the GNU General Public
8 * License version 2, as published by the Free Software Foundation, and
9 * may be copied, distributed, and modified under those terms.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
18 #include <drm/drm_atomic.h>
19 #include <drm/drm_crtc_helper.h>
20 #include <drm/drm_fb_helper.h>
21 #include <drm/drm_sync_helper.h>
22 #include <drm/rockchip_drm.h>
23 #include <linux/dma-mapping.h>
24 #include <linux/dma-iommu.h>
25 #include <linux/pm_runtime.h>
26 #include <linux/memblock.h>
27 #include <linux/module.h>
28 #include <linux/of_address.h>
29 #include <linux/of_graph.h>
30 #include <linux/clk.h>
31 #include <linux/clk-provider.h>
32 #include <linux/component.h>
33 #include <linux/fence.h>
34 #include <linux/console.h>
35 #include <linux/iommu.h>
37 #include <drm/rockchip_drm.h>
39 #include "rockchip_drm_drv.h"
40 #include "rockchip_drm_fb.h"
41 #include "rockchip_drm_fbdev.h"
42 #include "rockchip_drm_gem.h"
43 #include "rockchip_drm_rga.h"
45 #define DRIVER_NAME "rockchip"
46 #define DRIVER_DESC "RockChip Soc DRM"
47 #define DRIVER_DATE "20140818"
48 #define DRIVER_MAJOR 1
49 #define DRIVER_MINOR 0
51 static bool is_support_iommu = true;
53 static LIST_HEAD(rockchip_drm_subdrv_list);
54 static DEFINE_MUTEX(subdrv_list_mutex);
55 static struct drm_driver rockchip_drm_driver;
57 struct rockchip_drm_mode_set {
58 struct list_head head;
59 struct drm_framebuffer *fb;
60 struct drm_connector *connector;
61 struct drm_crtc *crtc;
62 struct drm_display_mode *mode;
73 static struct drm_crtc *find_crtc_by_node(struct drm_device *drm_dev,
74 struct device_node *node)
76 struct device_node *np_crtc;
77 struct drm_crtc *crtc;
79 np_crtc = of_get_parent(node);
80 if (!np_crtc || !of_device_is_available(np_crtc))
83 drm_for_each_crtc(crtc, drm_dev) {
84 if (crtc->port == np_crtc)
91 static struct drm_connector *find_connector_by_node(struct drm_device *drm_dev,
92 struct device_node *node)
94 struct device_node *np_connector;
95 struct drm_connector *connector;
97 np_connector = of_graph_get_remote_port_parent(node);
98 if (!np_connector || !of_device_is_available(np_connector))
101 drm_for_each_connector(connector, drm_dev) {
102 if (connector->port == np_connector)
109 void rockchip_free_loader_memory(struct drm_device *drm)
111 struct rockchip_drm_private *private = drm->dev_private;
112 struct rockchip_logo *logo;
115 if (!private || !private->logo || --private->logo->count)
118 logo = private->logo;
119 start = phys_to_virt(logo->start);
120 end = phys_to_virt(logo->start + logo->size);
122 if (private->domain) {
123 iommu_unmap(private->domain, logo->dma_addr,
124 logo->iommu_map_size);
125 drm_mm_remove_node(&logo->mm);
127 dma_unmap_sg(drm->dev, logo->sgt->sgl,
128 logo->sgt->nents, DMA_TO_DEVICE);
130 sg_free_table(logo->sgt);
131 memblock_free(logo->start, logo->size);
132 free_reserved_area(start, end, -1, "drm_logo");
134 private->logo = NULL;
137 static int init_loader_memory(struct drm_device *drm_dev)
139 struct rockchip_drm_private *private = drm_dev->dev_private;
140 struct rockchip_logo *logo;
141 struct device_node *np = drm_dev->dev->of_node;
142 struct device_node *node;
143 unsigned long nr_pages;
145 struct sg_table *sgt;
146 phys_addr_t start, size;
150 node = of_parse_phandle(np, "memory-region", 0);
154 ret = of_address_to_resource(node, 0, &res);
158 size = resource_size(&res);
162 logo = kmalloc(sizeof(*logo), GFP_KERNEL);
166 nr_pages = PAGE_ALIGN(size) >> PAGE_SHIFT;
167 pages = kmalloc_array(nr_pages, sizeof(*pages), GFP_KERNEL);
171 while (i < nr_pages) {
172 pages[i] = phys_to_page(start);
176 sgt = drm_prime_pages_to_sg(pages, nr_pages);
182 if (private->domain) {
183 memset(&logo->mm, 0, sizeof(logo->mm));
184 ret = drm_mm_insert_node_generic(&private->mm, &logo->mm,
188 DRM_ERROR("out of I/O virtual memory: %d\n", ret);
192 logo->dma_addr = logo->mm.start;
194 logo->iommu_map_size = iommu_map_sg(private->domain,
195 logo->dma_addr, sgt->sgl,
196 sgt->nents, IOMMU_READ);
197 if (logo->iommu_map_size < size) {
198 DRM_ERROR("failed to map buffer");
200 goto err_remove_node;
203 dma_map_sg(drm_dev->dev, sgt->sgl, sgt->nents, DMA_TO_DEVICE);
204 logo->dma_addr = sg_dma_address(sgt->sgl);
208 logo->start = res.start;
211 private->logo = logo;
216 drm_mm_remove_node(&logo->mm);
225 static struct drm_framebuffer *
226 get_framebuffer_by_node(struct drm_device *drm_dev, struct device_node *node)
228 struct rockchip_drm_private *private = drm_dev->dev_private;
229 struct drm_mode_fb_cmd2 mode_cmd = { 0 };
233 if (WARN_ON(!private->logo))
236 if (of_property_read_u32(node, "logo,offset", &val)) {
237 pr_err("%s: failed to get logo,offset\n", __func__);
240 mode_cmd.offsets[0] = val;
242 if (of_property_read_u32(node, "logo,width", &val)) {
243 pr_err("%s: failed to get logo,width\n", __func__);
246 mode_cmd.width = val;
248 if (of_property_read_u32(node, "logo,height", &val)) {
249 pr_err("%s: failed to get logo,height\n", __func__);
252 mode_cmd.height = val;
254 if (of_property_read_u32(node, "logo,bpp", &val)) {
255 pr_err("%s: failed to get logo,bpp\n", __func__);
260 mode_cmd.pitches[0] = ALIGN(mode_cmd.width * bpp, 32) / 8;
264 mode_cmd.pixel_format = DRM_FORMAT_BGR565;
267 mode_cmd.pixel_format = DRM_FORMAT_BGR888;
270 mode_cmd.pixel_format = DRM_FORMAT_XRGB8888;
273 pr_err("%s: unsupport to logo bpp %d\n", __func__, bpp);
277 return rockchip_fb_alloc(drm_dev, &mode_cmd, NULL, private->logo, 1);
280 static struct rockchip_drm_mode_set *
281 of_parse_display_resource(struct drm_device *drm_dev, struct device_node *route)
283 struct rockchip_drm_mode_set *set;
284 struct device_node *connect;
285 struct drm_framebuffer *fb;
286 struct drm_connector *connector;
287 struct drm_crtc *crtc;
291 connect = of_parse_phandle(route, "connect", 0);
295 fb = get_framebuffer_by_node(drm_dev, route);
296 if (IS_ERR_OR_NULL(fb))
299 crtc = find_crtc_by_node(drm_dev, connect);
300 connector = find_connector_by_node(drm_dev, connect);
301 if (!crtc || !connector) {
302 dev_warn(drm_dev->dev,
303 "No available crtc or connector for display");
304 drm_framebuffer_unreference(fb);
308 set = kzalloc(sizeof(*set), GFP_KERNEL);
312 if (!of_property_read_u32(route, "video,hdisplay", &val))
315 if (!of_property_read_u32(route, "video,vdisplay", &val))
318 if (!of_property_read_u32(route, "video,vrefresh", &val))
321 if (!of_property_read_u32(route, "logo,ymirror", &val))
325 if (!of_property_read_string(route, "logo,mode", &string) &&
326 !strcmp(string, "fullscreen"))
331 set->connector = connector;
336 int setup_initial_state(struct drm_device *drm_dev,
337 struct drm_atomic_state *state,
338 struct rockchip_drm_mode_set *set)
340 struct drm_connector *connector = set->connector;
341 struct drm_crtc *crtc = set->crtc;
342 struct drm_crtc_state *crtc_state;
343 struct drm_connector_state *conn_state;
344 struct drm_plane_state *primary_state;
345 struct drm_display_mode *mode = NULL;
346 const struct drm_connector_helper_funcs *funcs;
347 bool is_crtc_enabled = true;
348 int hdisplay, vdisplay;
349 int fb_width, fb_height;
350 int found = 0, match = 0;
354 if (!set->hdisplay || !set->vdisplay || !set->vrefresh)
355 is_crtc_enabled = false;
357 conn_state = drm_atomic_get_connector_state(state, connector);
358 if (IS_ERR(conn_state))
359 return PTR_ERR(conn_state);
361 funcs = connector->helper_private;
362 conn_state->best_encoder = funcs->best_encoder(connector);
363 if (funcs->loader_protect)
364 funcs->loader_protect(connector, true);
365 connector->loader_protect = true;
366 num_modes = connector->funcs->fill_modes(connector, 4096, 4096);
368 dev_err(drm_dev->dev, "connector[%s] can't found any modes\n",
374 list_for_each_entry(mode, &connector->modes, head) {
375 if (mode->hdisplay == set->hdisplay &&
376 mode->vdisplay == set->vdisplay &&
377 drm_mode_vrefresh(mode) == set->vrefresh) {
385 list_for_each_entry(mode, &connector->modes, head) {
386 if (mode->type & DRM_MODE_TYPE_PREFERRED) {
393 mode = list_first_entry_or_null(&connector->modes,
394 struct drm_display_mode,
397 pr_err("failed to find available modes\n");
405 crtc_state = drm_atomic_get_crtc_state(state, crtc);
406 if (IS_ERR(crtc_state)) {
407 ret = PTR_ERR(crtc_state);
411 drm_mode_copy(&crtc_state->adjusted_mode, mode);
412 if (!match || !is_crtc_enabled) {
413 set->mode_changed = true;
415 ret = drm_atomic_set_crtc_for_connector(conn_state, crtc);
419 ret = drm_atomic_set_mode_for_crtc(crtc_state, mode);
423 crtc_state->active = true;
430 primary_state = drm_atomic_get_plane_state(state, crtc->primary);
431 if (IS_ERR(primary_state)) {
432 ret = PTR_ERR(primary_state);
436 hdisplay = mode->hdisplay;
437 vdisplay = mode->vdisplay;
438 fb_width = set->fb->width;
439 fb_height = set->fb->height;
441 primary_state->crtc = crtc;
442 primary_state->src_x = 0;
443 primary_state->src_y = 0;
444 primary_state->src_w = fb_width << 16;
445 primary_state->src_h = fb_height << 16;
447 if (set->fb->width >= hdisplay) {
448 primary_state->crtc_x = 0;
449 primary_state->crtc_w = hdisplay;
451 primary_state->crtc_x = (hdisplay - fb_width) / 2;
452 primary_state->crtc_w = set->fb->width;
455 if (set->fb->height >= vdisplay) {
456 primary_state->crtc_y = 0;
457 primary_state->crtc_h = vdisplay;
459 primary_state->crtc_y = (vdisplay - fb_height) / 2;
460 primary_state->crtc_h = fb_height;
463 primary_state->crtc_x = 0;
464 primary_state->crtc_y = 0;
465 primary_state->crtc_w = hdisplay;
466 primary_state->crtc_h = vdisplay;
472 if (funcs->loader_protect)
473 funcs->loader_protect(connector, false);
474 connector->loader_protect = false;
478 static int update_state(struct drm_device *drm_dev,
479 struct drm_atomic_state *state,
480 struct rockchip_drm_mode_set *set,
481 unsigned int *plane_mask)
483 struct rockchip_drm_private *priv = drm_dev->dev_private;
484 struct drm_crtc *crtc = set->crtc;
485 struct drm_connector *connector = set->connector;
486 struct drm_display_mode *mode = set->mode;
487 struct drm_plane_state *primary_state;
488 struct drm_crtc_state *crtc_state;
489 struct drm_connector_state *conn_state;
492 crtc_state = drm_atomic_get_crtc_state(state, crtc);
493 if (IS_ERR(crtc_state))
494 return PTR_ERR(crtc_state);
495 conn_state = drm_atomic_get_connector_state(state, connector);
496 if (IS_ERR(conn_state))
497 return PTR_ERR(conn_state);
499 if (set->mode_changed) {
500 ret = drm_atomic_set_crtc_for_connector(conn_state, crtc);
504 ret = drm_atomic_set_mode_for_crtc(crtc_state, mode);
508 crtc_state->active = true;
510 const struct drm_encoder_helper_funcs *encoder_helper_funcs;
511 const struct drm_connector_helper_funcs *connector_helper_funcs;
512 struct drm_encoder *encoder;
513 int pipe = drm_crtc_index(crtc);
515 connector_helper_funcs = connector->helper_private;
516 if (!priv->crtc_funcs[pipe] ||
517 !priv->crtc_funcs[pipe]->loader_protect ||
518 !connector_helper_funcs ||
519 !connector_helper_funcs->best_encoder)
521 encoder = connector_helper_funcs->best_encoder(connector);
524 encoder_helper_funcs = encoder->helper_private;
525 if (!encoder_helper_funcs->atomic_check)
527 ret = encoder_helper_funcs->atomic_check(encoder, crtc->state,
531 if (encoder_helper_funcs->mode_set)
532 encoder_helper_funcs->mode_set(encoder, mode, mode);
533 priv->crtc_funcs[pipe]->loader_protect(crtc, true);
536 primary_state = drm_atomic_get_plane_state(state, crtc->primary);
537 if (IS_ERR(primary_state))
538 return PTR_ERR(primary_state);
540 crtc_state->plane_mask = 1 << drm_plane_index(crtc->primary);
541 *plane_mask |= crtc_state->plane_mask;
543 drm_atomic_set_fb_for_plane(primary_state, set->fb);
544 drm_framebuffer_unreference(set->fb);
545 ret = drm_atomic_set_crtc_for_plane(primary_state, crtc);
550 * some vop maybe not support ymirror, but force use it now.
552 drm_atomic_plane_set_property(crtc->primary, primary_state,
553 priv->logo_ymirror_prop,
559 static void show_loader_logo(struct drm_device *drm_dev)
561 struct drm_atomic_state *state, *old_state;
562 struct device_node *np = drm_dev->dev->of_node;
563 struct drm_mode_config *mode_config = &drm_dev->mode_config;
564 struct device_node *root, *route;
565 struct rockchip_drm_mode_set *set, *tmp;
566 struct list_head mode_set_list;
567 unsigned plane_mask = 0;
570 root = of_get_child_by_name(np, "route");
572 dev_warn(drm_dev->dev, "failed to parse display resources\n");
576 if (init_loader_memory(drm_dev)) {
577 dev_warn(drm_dev->dev, "failed to parse loader memory\n");
581 INIT_LIST_HEAD(&mode_set_list);
582 drm_modeset_lock_all(drm_dev);
583 state = drm_atomic_state_alloc(drm_dev);
585 dev_err(drm_dev->dev, "failed to alloc atomic state\n");
590 state->acquire_ctx = mode_config->acquire_ctx;
592 for_each_child_of_node(root, route) {
593 if (!of_device_is_available(route))
596 set = of_parse_display_resource(drm_dev, route);
600 if (setup_initial_state(drm_dev, state, set)) {
601 drm_framebuffer_unreference(set->fb);
605 INIT_LIST_HEAD(&set->head);
606 list_add_tail(&set->head, &mode_set_list);
609 if (list_empty(&mode_set_list)) {
610 dev_warn(drm_dev->dev, "can't not find any loader display\n");
615 old_state = drm_atomic_helper_duplicate_state(drm_dev,
616 mode_config->acquire_ctx);
617 if (IS_ERR(old_state)) {
618 dev_err(drm_dev->dev, "failed to duplicate atomic state\n");
619 ret = PTR_ERR_OR_ZERO(old_state);
624 * The state save initial devices status, swap the state into
625 * drm deivces as old state, so if new state come, can compare
626 * with this state to judge which status need to update.
628 drm_atomic_helper_swap_state(drm_dev, state);
629 drm_atomic_state_free(state);
630 state = drm_atomic_helper_duplicate_state(drm_dev,
631 mode_config->acquire_ctx);
633 dev_err(drm_dev->dev, "failed to duplicate atomic state\n");
634 ret = PTR_ERR_OR_ZERO(state);
635 goto err_free_old_state;
637 state->acquire_ctx = mode_config->acquire_ctx;
638 list_for_each_entry(set, &mode_set_list, head)
640 * We don't want to see any fail on update_state.
642 WARN_ON(update_state(drm_dev, state, set, &plane_mask));
644 ret = drm_atomic_commit(state);
645 drm_atomic_clean_old_fb(drm_dev, plane_mask, ret);
647 list_for_each_entry_safe(set, tmp, &mode_set_list, head) {
648 list_del(&set->head);
653 * Is possible get deadlock here?
655 WARN_ON(ret == -EDEADLK);
659 * restore display status if atomic commit failed.
661 drm_atomic_helper_swap_state(drm_dev, old_state);
662 goto err_free_old_state;
665 rockchip_free_loader_memory(drm_dev);
666 drm_atomic_state_free(old_state);
668 drm_modeset_unlock_all(drm_dev);
672 drm_atomic_state_free(old_state);
674 drm_atomic_state_free(state);
676 drm_modeset_unlock_all(drm_dev);
678 dev_err(drm_dev->dev, "failed to show loader logo\n");
681 static const char *const loader_protect_clocks[] __initconst = {
687 static struct clk **loader_clocks __initdata;
688 static int __init rockchip_clocks_loader_protect(void)
690 int nclocks = ARRAY_SIZE(loader_protect_clocks);
694 loader_clocks = kcalloc(nclocks, sizeof(void *), GFP_KERNEL);
698 for (i = 0; i < nclocks; i++) {
699 clk = __clk_lookup(loader_protect_clocks[i]);
702 loader_clocks[i] = clk;
703 clk_prepare_enable(clk);
709 fs_initcall(rockchip_clocks_loader_protect);
711 static int __init rockchip_clocks_loader_unprotect(void)
718 for (i = 0; i < ARRAY_SIZE(loader_protect_clocks); i++) {
719 struct clk *clk = loader_clocks[i];
722 clk_disable_unprepare(clk);
724 kfree(loader_clocks);
728 late_initcall_sync(rockchip_clocks_loader_unprotect);
732 * Attach a (component) device to the shared drm dma mapping from master drm
733 * device. This is used by the VOPs to map GEM buffers to a common DMA
736 int rockchip_drm_dma_attach_device(struct drm_device *drm_dev,
739 struct rockchip_drm_private *private = drm_dev->dev_private;
742 if (!is_support_iommu)
745 ret = iommu_attach_device(private->domain, dev);
747 dev_err(dev, "Failed to attach iommu device\n");
754 void rockchip_drm_dma_detach_device(struct drm_device *drm_dev,
757 struct rockchip_drm_private *private = drm_dev->dev_private;
758 struct iommu_domain *domain = private->domain;
760 if (!is_support_iommu)
763 iommu_detach_device(domain, dev);
766 int rockchip_register_crtc_funcs(struct drm_crtc *crtc,
767 const struct rockchip_crtc_funcs *crtc_funcs)
769 int pipe = drm_crtc_index(crtc);
770 struct rockchip_drm_private *priv = crtc->dev->dev_private;
772 if (pipe >= ROCKCHIP_MAX_CRTC)
775 priv->crtc_funcs[pipe] = crtc_funcs;
780 void rockchip_unregister_crtc_funcs(struct drm_crtc *crtc)
782 int pipe = drm_crtc_index(crtc);
783 struct rockchip_drm_private *priv = crtc->dev->dev_private;
785 if (pipe >= ROCKCHIP_MAX_CRTC)
788 priv->crtc_funcs[pipe] = NULL;
791 static struct drm_crtc *rockchip_crtc_from_pipe(struct drm_device *drm,
794 struct drm_crtc *crtc;
797 list_for_each_entry(crtc, &drm->mode_config.crtc_list, head)
804 static int rockchip_drm_crtc_enable_vblank(struct drm_device *dev,
807 struct rockchip_drm_private *priv = dev->dev_private;
808 struct drm_crtc *crtc = rockchip_crtc_from_pipe(dev, pipe);
810 if (crtc && priv->crtc_funcs[pipe] &&
811 priv->crtc_funcs[pipe]->enable_vblank)
812 return priv->crtc_funcs[pipe]->enable_vblank(crtc);
817 static void rockchip_drm_crtc_disable_vblank(struct drm_device *dev,
820 struct rockchip_drm_private *priv = dev->dev_private;
821 struct drm_crtc *crtc = rockchip_crtc_from_pipe(dev, pipe);
823 if (crtc && priv->crtc_funcs[pipe] &&
824 priv->crtc_funcs[pipe]->enable_vblank)
825 priv->crtc_funcs[pipe]->disable_vblank(crtc);
828 static int rockchip_drm_fault_handler(struct iommu_domain *iommu,
830 unsigned long iova, int flags, void *arg)
832 struct drm_device *drm_dev = arg;
833 struct rockchip_drm_private *priv = drm_dev->dev_private;
834 struct drm_crtc *crtc;
836 drm_for_each_crtc(crtc, drm_dev) {
837 int pipe = drm_crtc_index(crtc);
839 if (priv->crtc_funcs[pipe] &&
840 priv->crtc_funcs[pipe]->regs_dump)
841 priv->crtc_funcs[pipe]->regs_dump(crtc, NULL);
843 if (priv->crtc_funcs[pipe] &&
844 priv->crtc_funcs[pipe]->debugfs_dump)
845 priv->crtc_funcs[pipe]->debugfs_dump(crtc, NULL);
851 static int rockchip_drm_init_iommu(struct drm_device *drm_dev)
853 struct rockchip_drm_private *private = drm_dev->dev_private;
854 struct iommu_domain_geometry *geometry;
857 if (!is_support_iommu)
860 private->domain = iommu_domain_alloc(&platform_bus_type);
861 if (!private->domain)
864 geometry = &private->domain->geometry;
865 start = geometry->aperture_start;
866 end = geometry->aperture_end;
868 DRM_DEBUG("IOMMU context initialized (aperture: %#llx-%#llx)\n",
870 drm_mm_init(&private->mm, start, end - start + 1);
871 mutex_init(&private->mm_lock);
873 iommu_set_fault_handler(private->domain, rockchip_drm_fault_handler,
879 static void rockchip_iommu_cleanup(struct drm_device *drm_dev)
881 struct rockchip_drm_private *private = drm_dev->dev_private;
883 if (!is_support_iommu)
886 drm_mm_takedown(&private->mm);
887 iommu_domain_free(private->domain);
890 #ifdef CONFIG_DEBUG_FS
891 static int rockchip_drm_mm_dump(struct seq_file *s, void *data)
893 struct drm_info_node *node = s->private;
894 struct drm_minor *minor = node->minor;
895 struct drm_device *drm_dev = minor->dev;
896 struct rockchip_drm_private *priv = drm_dev->dev_private;
899 mutex_lock(&priv->mm_lock);
901 ret = drm_mm_dump_table(s, &priv->mm);
903 mutex_unlock(&priv->mm_lock);
908 static int rockchip_drm_summary_show(struct seq_file *s, void *data)
910 struct drm_info_node *node = s->private;
911 struct drm_minor *minor = node->minor;
912 struct drm_device *drm_dev = minor->dev;
913 struct rockchip_drm_private *priv = drm_dev->dev_private;
914 struct drm_crtc *crtc;
916 drm_for_each_crtc(crtc, drm_dev) {
917 int pipe = drm_crtc_index(crtc);
919 if (priv->crtc_funcs[pipe] &&
920 priv->crtc_funcs[pipe]->debugfs_dump)
921 priv->crtc_funcs[pipe]->debugfs_dump(crtc, s);
927 static struct drm_info_list rockchip_debugfs_files[] = {
928 { "summary", rockchip_drm_summary_show, 0, NULL },
929 { "mm_dump", rockchip_drm_mm_dump, 0, NULL },
932 static int rockchip_drm_debugfs_init(struct drm_minor *minor)
934 struct drm_device *dev = minor->dev;
937 ret = drm_debugfs_create_files(rockchip_debugfs_files,
938 ARRAY_SIZE(rockchip_debugfs_files),
942 dev_err(dev->dev, "could not install rockchip_debugfs_list\n");
949 static void rockchip_drm_debugfs_cleanup(struct drm_minor *minor)
951 drm_debugfs_remove_files(rockchip_debugfs_files,
952 ARRAY_SIZE(rockchip_debugfs_files), minor);
956 static int rockchip_drm_create_properties(struct drm_device *dev)
958 struct drm_property *prop;
959 struct rockchip_drm_private *private = dev->dev_private;
960 const struct drm_prop_enum_list cabc_mode_enum_list[] = {
961 { ROCKCHIP_DRM_CABC_MODE_DISABLE, "Disable" },
962 { ROCKCHIP_DRM_CABC_MODE_NORMAL, "Normal" },
963 { ROCKCHIP_DRM_CABC_MODE_LOWPOWER, "LowPower" },
964 { ROCKCHIP_DRM_CABC_MODE_USERSPACE, "Userspace" },
967 prop = drm_property_create_enum(dev, 0, "CABC_MODE", cabc_mode_enum_list,
968 ARRAY_SIZE(cabc_mode_enum_list));
970 private->cabc_mode_property = prop;
972 prop = drm_property_create(dev, DRM_MODE_PROP_BLOB, "CABC_LUT", 0);
975 private->cabc_lut_property = prop;
977 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
978 "CABC_STAGE_UP", 0, 512);
981 private->cabc_stage_up_property = prop;
983 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
984 "CABC_STAGE_DOWN", 0, 255);
987 private->cabc_stage_down_property = prop;
989 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
990 "CABC_GLOBAL_DN", 0, 255);
993 private->cabc_global_dn_property = prop;
995 prop = drm_property_create_range(dev, DRM_MODE_PROP_ATOMIC,
996 "CABC_CALC_PIXEL_NUM", 0, 1000);
999 private->cabc_calc_pixel_num_property = prop;
1004 static int rockchip_drm_bind(struct device *dev)
1006 struct drm_device *drm_dev;
1007 struct rockchip_drm_private *private;
1010 drm_dev = drm_dev_alloc(&rockchip_drm_driver, dev);
1014 ret = drm_dev_set_unique(drm_dev, "%s", dev_name(dev));
1018 dev_set_drvdata(dev, drm_dev);
1020 private = devm_kzalloc(drm_dev->dev, sizeof(*private), GFP_KERNEL);
1026 mutex_init(&private->commit.lock);
1027 INIT_WORK(&private->commit.work, rockchip_drm_atomic_work);
1029 drm_dev->dev_private = private;
1031 private->hdmi_pll.pll = devm_clk_get(dev, "hdmi-tmds-pll");
1032 if (PTR_ERR(private->hdmi_pll.pll) == -ENOENT) {
1033 private->hdmi_pll.pll = NULL;
1034 } else if (PTR_ERR(private->hdmi_pll.pll) == -EPROBE_DEFER) {
1035 ret = -EPROBE_DEFER;
1037 } else if (IS_ERR(private->hdmi_pll.pll)) {
1038 dev_err(dev, "failed to get hdmi-tmds-pll\n");
1039 ret = PTR_ERR(private->hdmi_pll.pll);
1043 private->default_pll.pll = devm_clk_get(dev, "default-vop-pll");
1044 if (PTR_ERR(private->default_pll.pll) == -ENOENT) {
1045 private->default_pll.pll = NULL;
1046 } else if (PTR_ERR(private->default_pll.pll) == -EPROBE_DEFER) {
1047 ret = -EPROBE_DEFER;
1049 } else if (IS_ERR(private->default_pll.pll)) {
1050 dev_err(dev, "failed to get default vop pll\n");
1051 ret = PTR_ERR(private->default_pll.pll);
1055 #ifdef CONFIG_DRM_DMA_SYNC
1056 private->cpu_fence_context = fence_context_alloc(1);
1057 atomic_set(&private->cpu_fence_seqno, 0);
1060 drm_mode_config_init(drm_dev);
1062 rockchip_drm_mode_config_init(drm_dev);
1063 rockchip_drm_create_properties(drm_dev);
1065 ret = rockchip_drm_init_iommu(drm_dev);
1067 goto err_config_cleanup;
1069 /* Try to bind all sub drivers. */
1070 ret = component_bind_all(dev, drm_dev);
1072 goto err_iommu_cleanup;
1074 /* init kms poll for handling hpd */
1075 drm_kms_helper_poll_init(drm_dev);
1078 * enable drm irq mode.
1079 * - with irq_enabled = true, we can use the vblank feature.
1081 drm_dev->irq_enabled = true;
1083 ret = drm_vblank_init(drm_dev, ROCKCHIP_MAX_CRTC);
1085 goto err_kms_helper_poll_fini;
1088 * with vblank_disable_allowed = true, vblank interrupt will be disabled
1089 * by drm timer once a current process gives up ownership of
1090 * vblank event.(after drm_vblank_put function is called)
1092 drm_dev->vblank_disable_allowed = true;
1094 drm_mode_config_reset(drm_dev);
1097 show_loader_logo(drm_dev);
1100 ret = rockchip_drm_fbdev_init(drm_dev);
1102 goto err_vblank_cleanup;
1104 drm_dev->mode_config.allow_fb_modifiers = true;
1106 ret = drm_dev_register(drm_dev, 0);
1108 goto err_fbdev_fini;
1112 rockchip_drm_fbdev_fini(drm_dev);
1114 drm_vblank_cleanup(drm_dev);
1115 err_kms_helper_poll_fini:
1116 drm_kms_helper_poll_fini(drm_dev);
1117 component_unbind_all(dev, drm_dev);
1119 rockchip_iommu_cleanup(drm_dev);
1121 drm_mode_config_cleanup(drm_dev);
1122 drm_dev->dev_private = NULL;
1124 drm_dev_unref(drm_dev);
1128 static void rockchip_drm_unbind(struct device *dev)
1130 struct drm_device *drm_dev = dev_get_drvdata(dev);
1132 rockchip_drm_fbdev_fini(drm_dev);
1133 drm_vblank_cleanup(drm_dev);
1134 drm_kms_helper_poll_fini(drm_dev);
1135 component_unbind_all(dev, drm_dev);
1136 rockchip_iommu_cleanup(drm_dev);
1137 drm_mode_config_cleanup(drm_dev);
1138 drm_dev->dev_private = NULL;
1139 drm_dev_unregister(drm_dev);
1140 drm_dev_unref(drm_dev);
1141 dev_set_drvdata(dev, NULL);
1144 static void rockchip_drm_crtc_cancel_pending_vblank(struct drm_crtc *crtc,
1145 struct drm_file *file_priv)
1147 struct rockchip_drm_private *priv = crtc->dev->dev_private;
1148 int pipe = drm_crtc_index(crtc);
1150 if (pipe < ROCKCHIP_MAX_CRTC &&
1151 priv->crtc_funcs[pipe] &&
1152 priv->crtc_funcs[pipe]->cancel_pending_vblank)
1153 priv->crtc_funcs[pipe]->cancel_pending_vblank(crtc, file_priv);
1156 int rockchip_drm_register_subdrv(struct drm_rockchip_subdrv *subdrv)
1161 mutex_lock(&subdrv_list_mutex);
1162 list_add_tail(&subdrv->list, &rockchip_drm_subdrv_list);
1163 mutex_unlock(&subdrv_list_mutex);
1167 EXPORT_SYMBOL_GPL(rockchip_drm_register_subdrv);
1169 int rockchip_drm_unregister_subdrv(struct drm_rockchip_subdrv *subdrv)
1174 mutex_lock(&subdrv_list_mutex);
1175 list_del(&subdrv->list);
1176 mutex_unlock(&subdrv_list_mutex);
1180 EXPORT_SYMBOL_GPL(rockchip_drm_unregister_subdrv);
1182 static int rockchip_drm_open(struct drm_device *dev, struct drm_file *file)
1184 struct rockchip_drm_file_private *file_priv;
1185 struct drm_rockchip_subdrv *subdrv;
1188 file_priv = kzalloc(sizeof(*file_priv), GFP_KERNEL);
1191 INIT_LIST_HEAD(&file_priv->gem_cpu_acquire_list);
1193 file->driver_priv = file_priv;
1195 mutex_lock(&subdrv_list_mutex);
1196 list_for_each_entry(subdrv, &rockchip_drm_subdrv_list, list) {
1197 ret = subdrv->open(dev, subdrv->dev, file);
1199 mutex_unlock(&subdrv_list_mutex);
1200 goto err_free_file_priv;
1203 mutex_unlock(&subdrv_list_mutex);
1214 static void rockchip_drm_preclose(struct drm_device *dev,
1215 struct drm_file *file_priv)
1217 struct rockchip_drm_file_private *file_private = file_priv->driver_priv;
1218 struct rockchip_gem_object_node *cur, *d;
1219 struct drm_rockchip_subdrv *subdrv;
1220 struct drm_crtc *crtc;
1222 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head)
1223 rockchip_drm_crtc_cancel_pending_vblank(crtc, file_priv);
1225 mutex_lock(&dev->struct_mutex);
1226 list_for_each_entry_safe(cur, d,
1227 &file_private->gem_cpu_acquire_list, list) {
1228 #ifdef CONFIG_DRM_DMA_SYNC
1229 BUG_ON(!cur->rockchip_gem_obj->acquire_fence);
1230 drm_fence_signal_and_put(&cur->rockchip_gem_obj->acquire_fence);
1232 drm_gem_object_unreference(&cur->rockchip_gem_obj->base);
1235 /* since we are deleting the whole list, just initialize the header
1236 * instead of calling list_del for every element
1238 INIT_LIST_HEAD(&file_private->gem_cpu_acquire_list);
1239 mutex_unlock(&dev->struct_mutex);
1241 mutex_lock(&subdrv_list_mutex);
1242 list_for_each_entry(subdrv, &rockchip_drm_subdrv_list, list)
1243 subdrv->close(dev, subdrv->dev, file_priv);
1244 mutex_unlock(&subdrv_list_mutex);
1247 static void rockchip_drm_postclose(struct drm_device *dev, struct drm_file *file)
1249 kfree(file->driver_priv);
1250 file->driver_priv = NULL;
1253 void rockchip_drm_lastclose(struct drm_device *dev)
1255 struct rockchip_drm_private *priv = dev->dev_private;
1258 drm_fb_helper_restore_fbdev_mode_unlocked(priv->fbdev_helper);
1261 static const struct drm_ioctl_desc rockchip_ioctls[] = {
1262 DRM_IOCTL_DEF_DRV(ROCKCHIP_GEM_CREATE, rockchip_gem_create_ioctl,
1263 DRM_UNLOCKED | DRM_AUTH | DRM_RENDER_ALLOW),
1264 DRM_IOCTL_DEF_DRV(ROCKCHIP_GEM_MAP_OFFSET,
1265 rockchip_gem_map_offset_ioctl,
1266 DRM_UNLOCKED | DRM_AUTH | DRM_RENDER_ALLOW),
1267 DRM_IOCTL_DEF_DRV(ROCKCHIP_GEM_CPU_ACQUIRE,
1268 rockchip_gem_cpu_acquire_ioctl,
1269 DRM_UNLOCKED | DRM_AUTH | DRM_RENDER_ALLOW),
1270 DRM_IOCTL_DEF_DRV(ROCKCHIP_GEM_CPU_RELEASE,
1271 rockchip_gem_cpu_release_ioctl,
1272 DRM_UNLOCKED | DRM_AUTH | DRM_RENDER_ALLOW),
1273 DRM_IOCTL_DEF_DRV(ROCKCHIP_RGA_GET_VER, rockchip_rga_get_ver_ioctl,
1274 DRM_AUTH | DRM_RENDER_ALLOW),
1275 DRM_IOCTL_DEF_DRV(ROCKCHIP_RGA_SET_CMDLIST,
1276 rockchip_rga_set_cmdlist_ioctl,
1277 DRM_AUTH | DRM_RENDER_ALLOW),
1278 DRM_IOCTL_DEF_DRV(ROCKCHIP_RGA_EXEC, rockchip_rga_exec_ioctl,
1279 DRM_AUTH | DRM_RENDER_ALLOW),
1282 static const struct file_operations rockchip_drm_driver_fops = {
1283 .owner = THIS_MODULE,
1285 .mmap = rockchip_gem_mmap,
1288 .unlocked_ioctl = drm_ioctl,
1289 #ifdef CONFIG_COMPAT
1290 .compat_ioctl = drm_compat_ioctl,
1292 .release = drm_release,
1295 const struct vm_operations_struct rockchip_drm_vm_ops = {
1296 .open = drm_gem_vm_open,
1297 .close = drm_gem_vm_close,
1300 static struct drm_driver rockchip_drm_driver = {
1301 .driver_features = DRIVER_MODESET | DRIVER_GEM |
1302 DRIVER_PRIME | DRIVER_ATOMIC |
1304 .preclose = rockchip_drm_preclose,
1305 .lastclose = rockchip_drm_lastclose,
1306 .get_vblank_counter = drm_vblank_no_hw_counter,
1307 .open = rockchip_drm_open,
1308 .postclose = rockchip_drm_postclose,
1309 .enable_vblank = rockchip_drm_crtc_enable_vblank,
1310 .disable_vblank = rockchip_drm_crtc_disable_vblank,
1311 .gem_vm_ops = &rockchip_drm_vm_ops,
1312 .gem_free_object = rockchip_gem_free_object,
1313 .dumb_create = rockchip_gem_dumb_create,
1314 .dumb_map_offset = rockchip_gem_dumb_map_offset,
1315 .dumb_destroy = drm_gem_dumb_destroy,
1316 .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
1317 .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
1318 .gem_prime_import = drm_gem_prime_import,
1319 .gem_prime_export = drm_gem_prime_export,
1320 .gem_prime_get_sg_table = rockchip_gem_prime_get_sg_table,
1321 .gem_prime_import_sg_table = rockchip_gem_prime_import_sg_table,
1322 .gem_prime_vmap = rockchip_gem_prime_vmap,
1323 .gem_prime_vunmap = rockchip_gem_prime_vunmap,
1324 .gem_prime_mmap = rockchip_gem_mmap_buf,
1325 .gem_prime_begin_cpu_access = rockchip_gem_prime_begin_cpu_access,
1326 .gem_prime_end_cpu_access = rockchip_gem_prime_end_cpu_access,
1327 #ifdef CONFIG_DEBUG_FS
1328 .debugfs_init = rockchip_drm_debugfs_init,
1329 .debugfs_cleanup = rockchip_drm_debugfs_cleanup,
1331 .ioctls = rockchip_ioctls,
1332 .num_ioctls = ARRAY_SIZE(rockchip_ioctls),
1333 .fops = &rockchip_drm_driver_fops,
1334 .name = DRIVER_NAME,
1335 .desc = DRIVER_DESC,
1336 .date = DRIVER_DATE,
1337 .major = DRIVER_MAJOR,
1338 .minor = DRIVER_MINOR,
1341 #ifdef CONFIG_PM_SLEEP
1342 void rockchip_drm_fb_suspend(struct drm_device *drm)
1344 struct rockchip_drm_private *priv = drm->dev_private;
1347 drm_fb_helper_set_suspend(priv->fbdev_helper, 1);
1351 void rockchip_drm_fb_resume(struct drm_device *drm)
1353 struct rockchip_drm_private *priv = drm->dev_private;
1356 drm_fb_helper_set_suspend(priv->fbdev_helper, 0);
1360 static int rockchip_drm_sys_suspend(struct device *dev)
1362 struct drm_device *drm = dev_get_drvdata(dev);
1363 struct rockchip_drm_private *priv = drm->dev_private;
1365 drm_kms_helper_poll_disable(drm);
1366 rockchip_drm_fb_suspend(drm);
1368 priv->state = drm_atomic_helper_suspend(drm);
1369 if (IS_ERR(priv->state)) {
1370 rockchip_drm_fb_resume(drm);
1371 drm_kms_helper_poll_enable(drm);
1372 return PTR_ERR(priv->state);
1378 static int rockchip_drm_sys_resume(struct device *dev)
1380 struct drm_device *drm = dev_get_drvdata(dev);
1381 struct rockchip_drm_private *priv = drm->dev_private;
1383 drm_atomic_helper_resume(drm, priv->state);
1384 rockchip_drm_fb_resume(drm);
1385 drm_kms_helper_poll_enable(drm);
1391 static const struct dev_pm_ops rockchip_drm_pm_ops = {
1392 SET_SYSTEM_SLEEP_PM_OPS(rockchip_drm_sys_suspend,
1393 rockchip_drm_sys_resume)
1396 static int compare_of(struct device *dev, void *data)
1398 struct device_node *np = data;
1400 return dev->of_node == np;
1403 static void rockchip_add_endpoints(struct device *dev,
1404 struct component_match **match,
1405 struct device_node *port)
1407 struct device_node *ep, *remote;
1409 for_each_child_of_node(port, ep) {
1410 remote = of_graph_get_remote_port_parent(ep);
1411 if (!remote || !of_device_is_available(remote)) {
1412 of_node_put(remote);
1414 } else if (!of_device_is_available(remote->parent)) {
1415 dev_warn(dev, "parent device of %s is not available\n",
1417 of_node_put(remote);
1421 component_match_add(dev, match, compare_of, remote);
1422 of_node_put(remote);
1426 static const struct component_master_ops rockchip_drm_ops = {
1427 .bind = rockchip_drm_bind,
1428 .unbind = rockchip_drm_unbind,
1431 static int rockchip_drm_platform_probe(struct platform_device *pdev)
1433 struct device *dev = &pdev->dev;
1434 struct component_match *match = NULL;
1435 struct device_node *np = dev->of_node;
1436 struct device_node *port;
1442 * Bind the crtc ports first, so that
1443 * drm_of_find_possible_crtcs called from encoder .bind callbacks
1444 * works as expected.
1447 struct device_node *iommu;
1449 port = of_parse_phandle(np, "ports", i);
1453 if (!of_device_is_available(port->parent)) {
1458 iommu = of_parse_phandle(port->parent, "iommus", 0);
1459 if (!iommu || !of_device_is_available(iommu->parent)) {
1460 dev_dbg(dev, "no iommu attached for %s, using non-iommu buffers\n",
1461 port->parent->full_name);
1463 * if there is a crtc not support iommu, force set all
1464 * crtc use non-iommu buffer.
1466 is_support_iommu = false;
1469 component_match_add(dev, &match, compare_of, port->parent);
1474 dev_err(dev, "missing 'ports' property\n");
1479 dev_err(dev, "No available vop found for display-subsystem.\n");
1483 * For each bound crtc, bind the encoders attached to its
1487 port = of_parse_phandle(np, "ports", i);
1491 if (!of_device_is_available(port->parent)) {
1496 rockchip_add_endpoints(dev, &match, port);
1500 return component_master_add_with_match(dev, &rockchip_drm_ops, match);
1503 static int rockchip_drm_platform_remove(struct platform_device *pdev)
1505 component_master_del(&pdev->dev, &rockchip_drm_ops);
1510 static const struct of_device_id rockchip_drm_dt_ids[] = {
1511 { .compatible = "rockchip,display-subsystem", },
1514 MODULE_DEVICE_TABLE(of, rockchip_drm_dt_ids);
1516 static struct platform_driver rockchip_drm_platform_driver = {
1517 .probe = rockchip_drm_platform_probe,
1518 .remove = rockchip_drm_platform_remove,
1520 .name = "rockchip-drm",
1521 .of_match_table = rockchip_drm_dt_ids,
1522 .pm = &rockchip_drm_pm_ops,
1526 module_platform_driver(rockchip_drm_platform_driver);
1528 MODULE_AUTHOR("Mark Yao <mark.yao@rock-chips.com>");
1529 MODULE_DESCRIPTION("ROCKCHIP DRM Driver");
1530 MODULE_LICENSE("GPL v2");