2 * Copyright (C) STMicroelectronics SA 2014
3 * Authors: Benjamin Gaignard <benjamin.gaignard@st.com>
4 * Fabien Dessenne <fabien.dessenne@st.com>
5 * for STMicroelectronics.
6 * License terms: GNU General Public License (GPL), version 2
9 #include <drm/drm_atomic.h>
10 #include <drm/drm_fb_cma_helper.h>
11 #include <drm/drm_gem_cma_helper.h>
13 #include "sti_compositor.h"
15 #include "sti_plane.h"
18 #define ALPHASWITCH BIT(6)
19 #define ENA_COLOR_FILL BIT(8)
20 #define BIGNOTLITTLE BIT(23)
21 #define WAIT_NEXT_VSYNC BIT(31)
23 /* GDP color formats */
24 #define GDP_RGB565 0x00
25 #define GDP_RGB888 0x01
26 #define GDP_RGB888_32 0x02
27 #define GDP_XBGR8888 (GDP_RGB888_32 | BIGNOTLITTLE | ALPHASWITCH)
28 #define GDP_ARGB8565 0x04
29 #define GDP_ARGB8888 0x05
30 #define GDP_ABGR8888 (GDP_ARGB8888 | BIGNOTLITTLE | ALPHASWITCH)
31 #define GDP_ARGB1555 0x06
32 #define GDP_ARGB4444 0x07
34 #define GDP2STR(fmt) { GDP_ ## fmt, #fmt }
36 static struct gdp_format_to_str {
39 } gdp_format_to_str[] = {
51 #define GAM_GDP_CTL_OFFSET 0x00
52 #define GAM_GDP_AGC_OFFSET 0x04
53 #define GAM_GDP_VPO_OFFSET 0x0C
54 #define GAM_GDP_VPS_OFFSET 0x10
55 #define GAM_GDP_PML_OFFSET 0x14
56 #define GAM_GDP_PMP_OFFSET 0x18
57 #define GAM_GDP_SIZE_OFFSET 0x1C
58 #define GAM_GDP_NVN_OFFSET 0x24
59 #define GAM_GDP_KEY1_OFFSET 0x28
60 #define GAM_GDP_KEY2_OFFSET 0x2C
61 #define GAM_GDP_PPT_OFFSET 0x34
62 #define GAM_GDP_CML_OFFSET 0x3C
63 #define GAM_GDP_MST_OFFSET 0x68
65 #define GAM_GDP_ALPHARANGE_255 BIT(5)
66 #define GAM_GDP_AGC_FULL_RANGE 0x00808080
67 #define GAM_GDP_PPT_IGNORE (BIT(1) | BIT(0))
68 #define GAM_GDP_SIZE_MAX 0x7FF
70 #define GDP_NODE_NB_BANK 2
71 #define GDP_NODE_PER_FIELD 2
92 struct sti_gdp_node_list {
93 struct sti_gdp_node *top_field;
94 dma_addr_t top_field_paddr;
95 struct sti_gdp_node *btm_field;
96 dma_addr_t btm_field_paddr;
102 * @sti_plane: sti_plane structure
103 * @dev: driver device
104 * @regs: gdp registers
105 * @clk_pix: pixel clock for the current gdp
106 * @clk_main_parent: gdp parent clock if main path used
107 * @clk_aux_parent: gdp parent clock if aux path used
108 * @vtg_field_nb: callback for VTG FIELD (top or bottom) notification
109 * @is_curr_top: true if the current node processed is the top field
110 * @node_list: array of node list
111 * @vtg: registered vtg
114 struct sti_plane plane;
118 struct clk *clk_main_parent;
119 struct clk *clk_aux_parent;
120 struct notifier_block vtg_field_nb;
122 struct sti_gdp_node_list node_list[GDP_NODE_NB_BANK];
126 #define to_sti_gdp(x) container_of(x, struct sti_gdp, plane)
128 static const uint32_t gdp_supported_formats[] = {
139 #define DBGFS_DUMP(reg) seq_printf(s, "\n %-25s 0x%08X", #reg, \
140 readl(gdp->regs + reg ## _OFFSET))
142 static void gdp_dbg_ctl(struct seq_file *s, int val)
146 seq_puts(s, "\tColor:");
147 for (i = 0; i < ARRAY_SIZE(gdp_format_to_str); i++) {
148 if (gdp_format_to_str[i].format == (val & 0x1F)) {
149 seq_printf(s, gdp_format_to_str[i].name);
153 if (i == ARRAY_SIZE(gdp_format_to_str))
154 seq_puts(s, "<UNKNOWN>");
156 seq_printf(s, "\tWaitNextVsync:%d", val & WAIT_NEXT_VSYNC ? 1 : 0);
159 static void gdp_dbg_vpo(struct seq_file *s, int val)
161 seq_printf(s, "\txdo:%4d\tydo:%4d", val & 0xFFFF, (val >> 16) & 0xFFFF);
164 static void gdp_dbg_vps(struct seq_file *s, int val)
166 seq_printf(s, "\txds:%4d\tyds:%4d", val & 0xFFFF, (val >> 16) & 0xFFFF);
169 static void gdp_dbg_size(struct seq_file *s, int val)
171 seq_printf(s, "\t%d x %d", val & 0xFFFF, (val >> 16) & 0xFFFF);
174 static void gdp_dbg_nvn(struct seq_file *s, struct sti_gdp *gdp, int val)
179 for (i = 0; i < GDP_NODE_NB_BANK; i++) {
180 if (gdp->node_list[i].top_field_paddr == val) {
181 base = gdp->node_list[i].top_field;
184 if (gdp->node_list[i].btm_field_paddr == val) {
185 base = gdp->node_list[i].btm_field;
191 seq_printf(s, "\tVirt @: %p", base);
194 static void gdp_dbg_ppt(struct seq_file *s, int val)
196 if (val & GAM_GDP_PPT_IGNORE)
197 seq_puts(s, "\tNot displayed on mixer!");
200 static void gdp_dbg_mst(struct seq_file *s, int val)
203 seq_puts(s, "\tBUFFER UNDERFLOW!");
206 static int gdp_dbg_show(struct seq_file *s, void *data)
208 struct drm_info_node *node = s->private;
209 struct sti_gdp *gdp = (struct sti_gdp *)node->info_ent->data;
210 struct drm_device *dev = node->minor->dev;
211 struct drm_plane *drm_plane = &gdp->plane.drm_plane;
212 struct drm_crtc *crtc = drm_plane->crtc;
215 ret = mutex_lock_interruptible(&dev->struct_mutex);
219 seq_printf(s, "%s: (vaddr = 0x%p)",
220 sti_plane_to_str(&gdp->plane), gdp->regs);
222 DBGFS_DUMP(GAM_GDP_CTL);
223 gdp_dbg_ctl(s, readl(gdp->regs + GAM_GDP_CTL_OFFSET));
224 DBGFS_DUMP(GAM_GDP_AGC);
225 DBGFS_DUMP(GAM_GDP_VPO);
226 gdp_dbg_vpo(s, readl(gdp->regs + GAM_GDP_VPO_OFFSET));
227 DBGFS_DUMP(GAM_GDP_VPS);
228 gdp_dbg_vps(s, readl(gdp->regs + GAM_GDP_VPS_OFFSET));
229 DBGFS_DUMP(GAM_GDP_PML);
230 DBGFS_DUMP(GAM_GDP_PMP);
231 DBGFS_DUMP(GAM_GDP_SIZE);
232 gdp_dbg_size(s, readl(gdp->regs + GAM_GDP_SIZE_OFFSET));
233 DBGFS_DUMP(GAM_GDP_NVN);
234 gdp_dbg_nvn(s, gdp, readl(gdp->regs + GAM_GDP_NVN_OFFSET));
235 DBGFS_DUMP(GAM_GDP_KEY1);
236 DBGFS_DUMP(GAM_GDP_KEY2);
237 DBGFS_DUMP(GAM_GDP_PPT);
238 gdp_dbg_ppt(s, readl(gdp->regs + GAM_GDP_PPT_OFFSET));
239 DBGFS_DUMP(GAM_GDP_CML);
240 DBGFS_DUMP(GAM_GDP_MST);
241 gdp_dbg_mst(s, readl(gdp->regs + GAM_GDP_MST_OFFSET));
245 seq_puts(s, " Not connected to any DRM CRTC\n");
247 seq_printf(s, " Connected to DRM CRTC #%d (%s)\n",
248 crtc->base.id, sti_mixer_to_str(to_sti_mixer(crtc)));
250 mutex_unlock(&dev->struct_mutex);
254 static void gdp_node_dump_node(struct seq_file *s, struct sti_gdp_node *node)
256 seq_printf(s, "\t@:0x%p", node);
257 seq_printf(s, "\n\tCTL 0x%08X", node->gam_gdp_ctl);
258 gdp_dbg_ctl(s, node->gam_gdp_ctl);
259 seq_printf(s, "\n\tAGC 0x%08X", node->gam_gdp_agc);
260 seq_printf(s, "\n\tVPO 0x%08X", node->gam_gdp_vpo);
261 gdp_dbg_vpo(s, node->gam_gdp_vpo);
262 seq_printf(s, "\n\tVPS 0x%08X", node->gam_gdp_vps);
263 gdp_dbg_vps(s, node->gam_gdp_vps);
264 seq_printf(s, "\n\tPML 0x%08X", node->gam_gdp_pml);
265 seq_printf(s, "\n\tPMP 0x%08X", node->gam_gdp_pmp);
266 seq_printf(s, "\n\tSIZE 0x%08X", node->gam_gdp_size);
267 gdp_dbg_size(s, node->gam_gdp_size);
268 seq_printf(s, "\n\tNVN 0x%08X", node->gam_gdp_nvn);
269 seq_printf(s, "\n\tKEY1 0x%08X", node->gam_gdp_key1);
270 seq_printf(s, "\n\tKEY2 0x%08X", node->gam_gdp_key2);
271 seq_printf(s, "\n\tPPT 0x%08X", node->gam_gdp_ppt);
272 gdp_dbg_ppt(s, node->gam_gdp_ppt);
273 seq_printf(s, "\n\tCML 0x%08X", node->gam_gdp_cml);
277 static int gdp_node_dbg_show(struct seq_file *s, void *arg)
279 struct drm_info_node *node = s->private;
280 struct sti_gdp *gdp = (struct sti_gdp *)node->info_ent->data;
281 struct drm_device *dev = node->minor->dev;
285 ret = mutex_lock_interruptible(&dev->struct_mutex);
289 for (b = 0; b < GDP_NODE_NB_BANK; b++) {
290 seq_printf(s, "\n%s[%d].top", sti_plane_to_str(&gdp->plane), b);
291 gdp_node_dump_node(s, gdp->node_list[b].top_field);
292 seq_printf(s, "\n%s[%d].btm", sti_plane_to_str(&gdp->plane), b);
293 gdp_node_dump_node(s, gdp->node_list[b].btm_field);
296 mutex_unlock(&dev->struct_mutex);
300 static struct drm_info_list gdp0_debugfs_files[] = {
301 { "gdp0", gdp_dbg_show, 0, NULL },
302 { "gdp0_node", gdp_node_dbg_show, 0, NULL },
305 static struct drm_info_list gdp1_debugfs_files[] = {
306 { "gdp1", gdp_dbg_show, 0, NULL },
307 { "gdp1_node", gdp_node_dbg_show, 0, NULL },
310 static struct drm_info_list gdp2_debugfs_files[] = {
311 { "gdp2", gdp_dbg_show, 0, NULL },
312 { "gdp2_node", gdp_node_dbg_show, 0, NULL },
315 static struct drm_info_list gdp3_debugfs_files[] = {
316 { "gdp3", gdp_dbg_show, 0, NULL },
317 { "gdp3_node", gdp_node_dbg_show, 0, NULL },
320 static int gdp_debugfs_init(struct sti_gdp *gdp, struct drm_minor *minor)
323 struct drm_info_list *gdp_debugfs_files;
326 switch (gdp->plane.desc) {
328 gdp_debugfs_files = gdp0_debugfs_files;
329 nb_files = ARRAY_SIZE(gdp0_debugfs_files);
332 gdp_debugfs_files = gdp1_debugfs_files;
333 nb_files = ARRAY_SIZE(gdp1_debugfs_files);
336 gdp_debugfs_files = gdp2_debugfs_files;
337 nb_files = ARRAY_SIZE(gdp2_debugfs_files);
340 gdp_debugfs_files = gdp3_debugfs_files;
341 nb_files = ARRAY_SIZE(gdp3_debugfs_files);
347 for (i = 0; i < nb_files; i++)
348 gdp_debugfs_files[i].data = gdp;
350 return drm_debugfs_create_files(gdp_debugfs_files,
352 minor->debugfs_root, minor);
355 static int sti_gdp_fourcc2format(int fourcc)
358 case DRM_FORMAT_XRGB8888:
359 return GDP_RGB888_32;
360 case DRM_FORMAT_XBGR8888:
362 case DRM_FORMAT_ARGB8888:
364 case DRM_FORMAT_ABGR8888:
366 case DRM_FORMAT_ARGB4444:
368 case DRM_FORMAT_ARGB1555:
370 case DRM_FORMAT_RGB565:
372 case DRM_FORMAT_RGB888:
378 static int sti_gdp_get_alpharange(int format)
384 return GAM_GDP_ALPHARANGE_255;
390 * sti_gdp_get_free_nodes
393 * Look for a GDP node list that is not currently read by the HW.
396 * Pointer to the free GDP node list
398 static struct sti_gdp_node_list *sti_gdp_get_free_nodes(struct sti_gdp *gdp)
403 hw_nvn = readl(gdp->regs + GAM_GDP_NVN_OFFSET);
407 for (i = 0; i < GDP_NODE_NB_BANK; i++)
408 if ((hw_nvn != gdp->node_list[i].btm_field_paddr) &&
409 (hw_nvn != gdp->node_list[i].top_field_paddr))
410 return &gdp->node_list[i];
412 /* in hazardious cases restart with the first node */
413 DRM_ERROR("inconsistent NVN for %s: 0x%08X\n",
414 sti_plane_to_str(&gdp->plane), hw_nvn);
417 return &gdp->node_list[0];
421 * sti_gdp_get_current_nodes
424 * Look for GDP nodes that are currently read by the HW.
427 * Pointer to the current GDP node list
430 struct sti_gdp_node_list *sti_gdp_get_current_nodes(struct sti_gdp *gdp)
435 hw_nvn = readl(gdp->regs + GAM_GDP_NVN_OFFSET);
439 for (i = 0; i < GDP_NODE_NB_BANK; i++)
440 if ((hw_nvn == gdp->node_list[i].btm_field_paddr) ||
441 (hw_nvn == gdp->node_list[i].top_field_paddr))
442 return &gdp->node_list[i];
445 DRM_DEBUG_DRIVER("Warning, NVN 0x%08X for %s does not match any node\n",
446 hw_nvn, sti_plane_to_str(&gdp->plane));
457 static void sti_gdp_disable(struct sti_gdp *gdp)
461 DRM_DEBUG_DRIVER("%s\n", sti_plane_to_str(&gdp->plane));
463 /* Set the nodes as 'to be ignored on mixer' */
464 for (i = 0; i < GDP_NODE_NB_BANK; i++) {
465 gdp->node_list[i].top_field->gam_gdp_ppt |= GAM_GDP_PPT_IGNORE;
466 gdp->node_list[i].btm_field->gam_gdp_ppt |= GAM_GDP_PPT_IGNORE;
469 if (sti_vtg_unregister_client(gdp->vtg, &gdp->vtg_field_nb))
470 DRM_DEBUG_DRIVER("Warning: cannot unregister VTG notifier\n");
473 clk_disable_unprepare(gdp->clk_pix);
475 gdp->plane.status = STI_PLANE_DISABLED;
480 * @nb: notifier block
481 * @event: event message
482 * @data: private data
484 * Handle VTG top field and bottom field event.
489 int sti_gdp_field_cb(struct notifier_block *nb,
490 unsigned long event, void *data)
492 struct sti_gdp *gdp = container_of(nb, struct sti_gdp, vtg_field_nb);
494 if (gdp->plane.status == STI_PLANE_FLUSHING) {
495 /* disable need to be synchronize on vsync event */
496 DRM_DEBUG_DRIVER("Vsync event received => disable %s\n",
497 sti_plane_to_str(&gdp->plane));
499 sti_gdp_disable(gdp);
503 case VTG_TOP_FIELD_EVENT:
504 gdp->is_curr_top = true;
506 case VTG_BOTTOM_FIELD_EVENT:
507 gdp->is_curr_top = false;
510 DRM_ERROR("unsupported event: %lu\n", event);
517 static void sti_gdp_init(struct sti_gdp *gdp)
519 struct device_node *np = gdp->dev->of_node;
522 unsigned int i, size;
524 /* Allocate all the nodes within a single memory page */
525 size = sizeof(struct sti_gdp_node) *
526 GDP_NODE_PER_FIELD * GDP_NODE_NB_BANK;
527 base = dma_alloc_wc(gdp->dev, size, &dma_addr, GFP_KERNEL | GFP_DMA);
530 DRM_ERROR("Failed to allocate memory for GDP node\n");
533 memset(base, 0, size);
535 for (i = 0; i < GDP_NODE_NB_BANK; i++) {
536 if (dma_addr & 0xF) {
537 DRM_ERROR("Mem alignment failed\n");
540 gdp->node_list[i].top_field = base;
541 gdp->node_list[i].top_field_paddr = dma_addr;
543 DRM_DEBUG_DRIVER("node[%d].top_field=%p\n", i, base);
544 base += sizeof(struct sti_gdp_node);
545 dma_addr += sizeof(struct sti_gdp_node);
547 if (dma_addr & 0xF) {
548 DRM_ERROR("Mem alignment failed\n");
551 gdp->node_list[i].btm_field = base;
552 gdp->node_list[i].btm_field_paddr = dma_addr;
553 DRM_DEBUG_DRIVER("node[%d].btm_field=%p\n", i, base);
554 base += sizeof(struct sti_gdp_node);
555 dma_addr += sizeof(struct sti_gdp_node);
558 if (of_device_is_compatible(np, "st,stih407-compositor")) {
559 /* GDP of STiH407 chip have its own pixel clock */
562 switch (gdp->plane.desc) {
564 clk_name = "pix_gdp1";
567 clk_name = "pix_gdp2";
570 clk_name = "pix_gdp3";
573 clk_name = "pix_gdp4";
576 DRM_ERROR("GDP id not recognized\n");
580 gdp->clk_pix = devm_clk_get(gdp->dev, clk_name);
581 if (IS_ERR(gdp->clk_pix))
582 DRM_ERROR("Cannot get %s clock\n", clk_name);
584 gdp->clk_main_parent = devm_clk_get(gdp->dev, "main_parent");
585 if (IS_ERR(gdp->clk_main_parent))
586 DRM_ERROR("Cannot get main_parent clock\n");
588 gdp->clk_aux_parent = devm_clk_get(gdp->dev, "aux_parent");
589 if (IS_ERR(gdp->clk_aux_parent))
590 DRM_ERROR("Cannot get aux_parent clock\n");
597 * @dst: requested destination size
600 * Return the cropped / clamped destination size
603 * cropped / clamped destination size
605 static int sti_gdp_get_dst(struct device *dev, int dst, int src)
611 dev_dbg(dev, "WARNING: GDP scale not supported, will crop\n");
615 dev_dbg(dev, "WARNING: GDP scale not supported, will clamp\n");
619 static int sti_gdp_atomic_check(struct drm_plane *drm_plane,
620 struct drm_plane_state *state)
622 struct sti_plane *plane = to_sti_plane(drm_plane);
623 struct sti_gdp *gdp = to_sti_gdp(plane);
624 struct drm_crtc *crtc = state->crtc;
625 struct sti_compositor *compo = dev_get_drvdata(gdp->dev);
626 struct drm_framebuffer *fb = state->fb;
627 bool first_prepare = plane->status == STI_PLANE_DISABLED ? true : false;
628 struct drm_crtc_state *crtc_state;
629 struct sti_mixer *mixer;
630 struct drm_display_mode *mode;
631 int dst_x, dst_y, dst_w, dst_h;
632 int src_x, src_y, src_w, src_h;
635 /* no need for further checks if the plane is being disabled */
639 mixer = to_sti_mixer(crtc);
640 crtc_state = drm_atomic_get_crtc_state(state->state, crtc);
641 mode = &crtc_state->mode;
642 dst_x = state->crtc_x;
643 dst_y = state->crtc_y;
644 dst_w = clamp_val(state->crtc_w, 0, mode->crtc_hdisplay - dst_x);
645 dst_h = clamp_val(state->crtc_h, 0, mode->crtc_vdisplay - dst_y);
646 /* src_x are in 16.16 format */
647 src_x = state->src_x >> 16;
648 src_y = state->src_y >> 16;
649 src_w = clamp_val(state->src_w >> 16, 0, GAM_GDP_SIZE_MAX);
650 src_h = clamp_val(state->src_h >> 16, 0, GAM_GDP_SIZE_MAX);
652 format = sti_gdp_fourcc2format(fb->pixel_format);
654 DRM_ERROR("Format not supported by GDP %.4s\n",
655 (char *)&fb->pixel_format);
659 if (!drm_fb_cma_get_gem_obj(fb, 0)) {
660 DRM_ERROR("Can't get CMA GEM object for fb\n");
665 /* Register gdp callback */
666 gdp->vtg = mixer->id == STI_MIXER_MAIN ?
667 compo->vtg_main : compo->vtg_aux;
668 if (sti_vtg_register_client(gdp->vtg,
669 &gdp->vtg_field_nb, crtc)) {
670 DRM_ERROR("Cannot register VTG notifier\n");
674 /* Set and enable gdp clock */
677 int rate = mode->clock * 1000;
681 * According to the mixer used, the gdp pixel clock
682 * should have a different parent clock.
684 if (mixer->id == STI_MIXER_MAIN)
685 clkp = gdp->clk_main_parent;
687 clkp = gdp->clk_aux_parent;
690 clk_set_parent(gdp->clk_pix, clkp);
692 res = clk_set_rate(gdp->clk_pix, rate);
694 DRM_ERROR("Cannot set rate (%dHz) for gdp\n",
699 if (clk_prepare_enable(gdp->clk_pix)) {
700 DRM_ERROR("Failed to prepare/enable gdp\n");
706 DRM_DEBUG_KMS("CRTC:%d (%s) drm plane:%d (%s)\n",
707 crtc->base.id, sti_mixer_to_str(mixer),
708 drm_plane->base.id, sti_plane_to_str(plane));
709 DRM_DEBUG_KMS("%s dst=(%dx%d)@(%d,%d) - src=(%dx%d)@(%d,%d)\n",
710 sti_plane_to_str(plane),
711 dst_w, dst_h, dst_x, dst_y,
712 src_w, src_h, src_x, src_y);
717 static void sti_gdp_atomic_update(struct drm_plane *drm_plane,
718 struct drm_plane_state *oldstate)
720 struct drm_plane_state *state = drm_plane->state;
721 struct sti_plane *plane = to_sti_plane(drm_plane);
722 struct sti_gdp *gdp = to_sti_gdp(plane);
723 struct drm_crtc *crtc = state->crtc;
724 struct drm_framebuffer *fb = state->fb;
725 struct drm_display_mode *mode;
726 int dst_x, dst_y, dst_w, dst_h;
727 int src_x, src_y, src_w, src_h;
728 struct drm_gem_cma_object *cma_obj;
729 struct sti_gdp_node_list *list;
730 struct sti_gdp_node_list *curr_list;
731 struct sti_gdp_node *top_field, *btm_field;
735 unsigned int depth, bpp;
736 u32 ydo, xdo, yds, xds;
742 dst_x = state->crtc_x;
743 dst_y = state->crtc_y;
744 dst_w = clamp_val(state->crtc_w, 0, mode->crtc_hdisplay - dst_x);
745 dst_h = clamp_val(state->crtc_h, 0, mode->crtc_vdisplay - dst_y);
746 /* src_x are in 16.16 format */
747 src_x = state->src_x >> 16;
748 src_y = state->src_y >> 16;
749 src_w = clamp_val(state->src_w >> 16, 0, GAM_GDP_SIZE_MAX);
750 src_h = clamp_val(state->src_h >> 16, 0, GAM_GDP_SIZE_MAX);
752 list = sti_gdp_get_free_nodes(gdp);
753 top_field = list->top_field;
754 btm_field = list->btm_field;
756 dev_dbg(gdp->dev, "%s %s top_node:0x%p btm_node:0x%p\n", __func__,
757 sti_plane_to_str(plane), top_field, btm_field);
759 /* build the top field */
760 top_field->gam_gdp_agc = GAM_GDP_AGC_FULL_RANGE;
761 top_field->gam_gdp_ctl = WAIT_NEXT_VSYNC;
762 format = sti_gdp_fourcc2format(fb->pixel_format);
763 top_field->gam_gdp_ctl |= format;
764 top_field->gam_gdp_ctl |= sti_gdp_get_alpharange(format);
765 top_field->gam_gdp_ppt &= ~GAM_GDP_PPT_IGNORE;
767 cma_obj = drm_fb_cma_get_gem_obj(fb, 0);
769 DRM_DEBUG_DRIVER("drm FB:%d format:%.4s phys@:0x%lx\n", fb->base.id,
770 (char *)&fb->pixel_format,
771 (unsigned long)cma_obj->paddr);
773 /* pixel memory location */
774 drm_fb_get_bpp_depth(fb->pixel_format, &depth, &bpp);
775 top_field->gam_gdp_pml = (u32)cma_obj->paddr + fb->offsets[0];
776 top_field->gam_gdp_pml += src_x * (bpp >> 3);
777 top_field->gam_gdp_pml += src_y * fb->pitches[0];
779 /* output parameters (clamped / cropped) */
780 dst_w = sti_gdp_get_dst(gdp->dev, dst_w, src_w);
781 dst_h = sti_gdp_get_dst(gdp->dev, dst_h, src_h);
782 ydo = sti_vtg_get_line_number(*mode, dst_y);
783 yds = sti_vtg_get_line_number(*mode, dst_y + dst_h - 1);
784 xdo = sti_vtg_get_pixel_number(*mode, dst_x);
785 xds = sti_vtg_get_pixel_number(*mode, dst_x + dst_w - 1);
786 top_field->gam_gdp_vpo = (ydo << 16) | xdo;
787 top_field->gam_gdp_vps = (yds << 16) | xds;
789 /* input parameters */
791 top_field->gam_gdp_pmp = fb->pitches[0];
792 top_field->gam_gdp_size = src_h << 16 | src_w;
794 /* Same content and chained together */
795 memcpy(btm_field, top_field, sizeof(*btm_field));
796 top_field->gam_gdp_nvn = list->btm_field_paddr;
797 btm_field->gam_gdp_nvn = list->top_field_paddr;
799 /* Interlaced mode */
800 if (mode->flags & DRM_MODE_FLAG_INTERLACE)
801 btm_field->gam_gdp_pml = top_field->gam_gdp_pml +
804 /* Update the NVN field of the 'right' field of the current GDP node
805 * (being used by the HW) with the address of the updated ('free') top
807 * - In interlaced mode the 'right' field is the bottom field as we
808 * update frames starting from their top field
809 * - In progressive mode, we update both bottom and top fields which
811 * At the next VSYNC, the updated node list will be used by the HW.
813 curr_list = sti_gdp_get_current_nodes(gdp);
814 dma_updated_top = list->top_field_paddr;
815 dma_updated_btm = list->btm_field_paddr;
817 dev_dbg(gdp->dev, "Current NVN:0x%X\n",
818 readl(gdp->regs + GAM_GDP_NVN_OFFSET));
819 dev_dbg(gdp->dev, "Posted buff: %lx current buff: %x\n",
820 (unsigned long)cma_obj->paddr,
821 readl(gdp->regs + GAM_GDP_PML_OFFSET));
824 /* First update or invalid node should directly write in the
826 DRM_DEBUG_DRIVER("%s first update (or invalid node)",
827 sti_plane_to_str(plane));
829 writel(gdp->is_curr_top ?
830 dma_updated_btm : dma_updated_top,
831 gdp->regs + GAM_GDP_NVN_OFFSET);
835 if (mode->flags & DRM_MODE_FLAG_INTERLACE) {
836 if (gdp->is_curr_top) {
837 /* Do not update in the middle of the frame, but
838 * postpone the update after the bottom field has
840 curr_list->btm_field->gam_gdp_nvn = dma_updated_top;
842 /* Direct update to avoid one frame delay */
843 writel(dma_updated_top,
844 gdp->regs + GAM_GDP_NVN_OFFSET);
847 /* Direct update for progressive to avoid one frame delay */
848 writel(dma_updated_top, gdp->regs + GAM_GDP_NVN_OFFSET);
852 sti_plane_update_fps(plane, true, false);
854 plane->status = STI_PLANE_UPDATED;
857 static void sti_gdp_atomic_disable(struct drm_plane *drm_plane,
858 struct drm_plane_state *oldstate)
860 struct sti_plane *plane = to_sti_plane(drm_plane);
862 if (!drm_plane->crtc) {
863 DRM_DEBUG_DRIVER("drm plane:%d not enabled\n",
868 DRM_DEBUG_DRIVER("CRTC:%d (%s) drm plane:%d (%s)\n",
869 drm_plane->crtc->base.id,
870 sti_mixer_to_str(to_sti_mixer(drm_plane->crtc)),
871 drm_plane->base.id, sti_plane_to_str(plane));
873 plane->status = STI_PLANE_DISABLING;
876 static const struct drm_plane_helper_funcs sti_gdp_helpers_funcs = {
877 .atomic_check = sti_gdp_atomic_check,
878 .atomic_update = sti_gdp_atomic_update,
879 .atomic_disable = sti_gdp_atomic_disable,
882 struct drm_plane *sti_gdp_create(struct drm_device *drm_dev,
883 struct device *dev, int desc,
884 void __iomem *baseaddr,
885 unsigned int possible_crtcs,
886 enum drm_plane_type type)
891 gdp = devm_kzalloc(dev, sizeof(*gdp), GFP_KERNEL);
893 DRM_ERROR("Failed to allocate memory for GDP\n");
898 gdp->regs = baseaddr;
899 gdp->plane.desc = desc;
900 gdp->plane.status = STI_PLANE_DISABLED;
902 gdp->vtg_field_nb.notifier_call = sti_gdp_field_cb;
906 res = drm_universal_plane_init(drm_dev, &gdp->plane.drm_plane,
908 &sti_plane_helpers_funcs,
909 gdp_supported_formats,
910 ARRAY_SIZE(gdp_supported_formats),
913 DRM_ERROR("Failed to initialize universal plane\n");
917 drm_plane_helper_add(&gdp->plane.drm_plane, &sti_gdp_helpers_funcs);
919 sti_plane_init_property(&gdp->plane, type);
921 if (gdp_debugfs_init(gdp, drm_dev->primary))
922 DRM_ERROR("GDP debugfs setup failed\n");
924 return &gdp->plane.drm_plane;
927 devm_kfree(dev, gdp);