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
8 #include <linux/seq_file.h>
10 #include <drm/drm_atomic.h>
11 #include <drm/drm_fb_cma_helper.h>
12 #include <drm/drm_gem_cma_helper.h>
14 #include "sti_compositor.h"
16 #include "sti_plane.h"
19 #define ALPHASWITCH BIT(6)
20 #define ENA_COLOR_FILL BIT(8)
21 #define BIGNOTLITTLE BIT(23)
22 #define WAIT_NEXT_VSYNC BIT(31)
24 /* GDP color formats */
25 #define GDP_RGB565 0x00
26 #define GDP_RGB888 0x01
27 #define GDP_RGB888_32 0x02
28 #define GDP_XBGR8888 (GDP_RGB888_32 | BIGNOTLITTLE | ALPHASWITCH)
29 #define GDP_ARGB8565 0x04
30 #define GDP_ARGB8888 0x05
31 #define GDP_ABGR8888 (GDP_ARGB8888 | BIGNOTLITTLE | ALPHASWITCH)
32 #define GDP_ARGB1555 0x06
33 #define GDP_ARGB4444 0x07
35 #define GDP2STR(fmt) { GDP_ ## fmt, #fmt }
37 static struct gdp_format_to_str {
40 } gdp_format_to_str[] = {
52 #define GAM_GDP_CTL_OFFSET 0x00
53 #define GAM_GDP_AGC_OFFSET 0x04
54 #define GAM_GDP_VPO_OFFSET 0x0C
55 #define GAM_GDP_VPS_OFFSET 0x10
56 #define GAM_GDP_PML_OFFSET 0x14
57 #define GAM_GDP_PMP_OFFSET 0x18
58 #define GAM_GDP_SIZE_OFFSET 0x1C
59 #define GAM_GDP_NVN_OFFSET 0x24
60 #define GAM_GDP_KEY1_OFFSET 0x28
61 #define GAM_GDP_KEY2_OFFSET 0x2C
62 #define GAM_GDP_PPT_OFFSET 0x34
63 #define GAM_GDP_CML_OFFSET 0x3C
64 #define GAM_GDP_MST_OFFSET 0x68
66 #define GAM_GDP_ALPHARANGE_255 BIT(5)
67 #define GAM_GDP_AGC_FULL_RANGE 0x00808080
68 #define GAM_GDP_PPT_IGNORE (BIT(1) | BIT(0))
69 #define GAM_GDP_SIZE_MAX 0x7FF
71 #define GDP_NODE_NB_BANK 2
72 #define GDP_NODE_PER_FIELD 2
93 struct sti_gdp_node_list {
94 struct sti_gdp_node *top_field;
95 dma_addr_t top_field_paddr;
96 struct sti_gdp_node *btm_field;
97 dma_addr_t btm_field_paddr;
103 * @sti_plane: sti_plane structure
104 * @dev: driver device
105 * @regs: gdp registers
106 * @clk_pix: pixel clock for the current gdp
107 * @clk_main_parent: gdp parent clock if main path used
108 * @clk_aux_parent: gdp parent clock if aux path used
109 * @vtg_field_nb: callback for VTG FIELD (top or bottom) notification
110 * @is_curr_top: true if the current node processed is the top field
111 * @node_list: array of node list
112 * @vtg: registered vtg
115 struct sti_plane plane;
119 struct clk *clk_main_parent;
120 struct clk *clk_aux_parent;
121 struct notifier_block vtg_field_nb;
123 struct sti_gdp_node_list node_list[GDP_NODE_NB_BANK];
127 #define to_sti_gdp(x) container_of(x, struct sti_gdp, plane)
129 static const uint32_t gdp_supported_formats[] = {
140 #define DBGFS_DUMP(reg) seq_printf(s, "\n %-25s 0x%08X", #reg, \
141 readl(gdp->regs + reg ## _OFFSET))
143 static void gdp_dbg_ctl(struct seq_file *s, int val)
147 seq_puts(s, "\tColor:");
148 for (i = 0; i < ARRAY_SIZE(gdp_format_to_str); i++) {
149 if (gdp_format_to_str[i].format == (val & 0x1F)) {
150 seq_printf(s, gdp_format_to_str[i].name);
154 if (i == ARRAY_SIZE(gdp_format_to_str))
155 seq_puts(s, "<UNKNOWN>");
157 seq_printf(s, "\tWaitNextVsync:%d", val & WAIT_NEXT_VSYNC ? 1 : 0);
160 static void gdp_dbg_vpo(struct seq_file *s, int val)
162 seq_printf(s, "\txdo:%4d\tydo:%4d", val & 0xFFFF, (val >> 16) & 0xFFFF);
165 static void gdp_dbg_vps(struct seq_file *s, int val)
167 seq_printf(s, "\txds:%4d\tyds:%4d", val & 0xFFFF, (val >> 16) & 0xFFFF);
170 static void gdp_dbg_size(struct seq_file *s, int val)
172 seq_printf(s, "\t%d x %d", val & 0xFFFF, (val >> 16) & 0xFFFF);
175 static void gdp_dbg_nvn(struct seq_file *s, struct sti_gdp *gdp, int val)
180 for (i = 0; i < GDP_NODE_NB_BANK; i++) {
181 if (gdp->node_list[i].top_field_paddr == val) {
182 base = gdp->node_list[i].top_field;
185 if (gdp->node_list[i].btm_field_paddr == val) {
186 base = gdp->node_list[i].btm_field;
192 seq_printf(s, "\tVirt @: %p", base);
195 static void gdp_dbg_ppt(struct seq_file *s, int val)
197 if (val & GAM_GDP_PPT_IGNORE)
198 seq_puts(s, "\tNot displayed on mixer!");
201 static void gdp_dbg_mst(struct seq_file *s, int val)
204 seq_puts(s, "\tBUFFER UNDERFLOW!");
207 static int gdp_dbg_show(struct seq_file *s, void *data)
209 struct drm_info_node *node = s->private;
210 struct sti_gdp *gdp = (struct sti_gdp *)node->info_ent->data;
211 struct drm_plane *drm_plane = &gdp->plane.drm_plane;
212 struct drm_crtc *crtc = drm_plane->crtc;
214 seq_printf(s, "%s: (vaddr = 0x%p)",
215 sti_plane_to_str(&gdp->plane), gdp->regs);
217 DBGFS_DUMP(GAM_GDP_CTL);
218 gdp_dbg_ctl(s, readl(gdp->regs + GAM_GDP_CTL_OFFSET));
219 DBGFS_DUMP(GAM_GDP_AGC);
220 DBGFS_DUMP(GAM_GDP_VPO);
221 gdp_dbg_vpo(s, readl(gdp->regs + GAM_GDP_VPO_OFFSET));
222 DBGFS_DUMP(GAM_GDP_VPS);
223 gdp_dbg_vps(s, readl(gdp->regs + GAM_GDP_VPS_OFFSET));
224 DBGFS_DUMP(GAM_GDP_PML);
225 DBGFS_DUMP(GAM_GDP_PMP);
226 DBGFS_DUMP(GAM_GDP_SIZE);
227 gdp_dbg_size(s, readl(gdp->regs + GAM_GDP_SIZE_OFFSET));
228 DBGFS_DUMP(GAM_GDP_NVN);
229 gdp_dbg_nvn(s, gdp, readl(gdp->regs + GAM_GDP_NVN_OFFSET));
230 DBGFS_DUMP(GAM_GDP_KEY1);
231 DBGFS_DUMP(GAM_GDP_KEY2);
232 DBGFS_DUMP(GAM_GDP_PPT);
233 gdp_dbg_ppt(s, readl(gdp->regs + GAM_GDP_PPT_OFFSET));
234 DBGFS_DUMP(GAM_GDP_CML);
235 DBGFS_DUMP(GAM_GDP_MST);
236 gdp_dbg_mst(s, readl(gdp->regs + GAM_GDP_MST_OFFSET));
240 seq_puts(s, " Not connected to any DRM CRTC\n");
242 seq_printf(s, " Connected to DRM CRTC #%d (%s)\n",
243 crtc->base.id, sti_mixer_to_str(to_sti_mixer(crtc)));
248 static void gdp_node_dump_node(struct seq_file *s, struct sti_gdp_node *node)
250 seq_printf(s, "\t@:0x%p", node);
251 seq_printf(s, "\n\tCTL 0x%08X", node->gam_gdp_ctl);
252 gdp_dbg_ctl(s, node->gam_gdp_ctl);
253 seq_printf(s, "\n\tAGC 0x%08X", node->gam_gdp_agc);
254 seq_printf(s, "\n\tVPO 0x%08X", node->gam_gdp_vpo);
255 gdp_dbg_vpo(s, node->gam_gdp_vpo);
256 seq_printf(s, "\n\tVPS 0x%08X", node->gam_gdp_vps);
257 gdp_dbg_vps(s, node->gam_gdp_vps);
258 seq_printf(s, "\n\tPML 0x%08X", node->gam_gdp_pml);
259 seq_printf(s, "\n\tPMP 0x%08X", node->gam_gdp_pmp);
260 seq_printf(s, "\n\tSIZE 0x%08X", node->gam_gdp_size);
261 gdp_dbg_size(s, node->gam_gdp_size);
262 seq_printf(s, "\n\tNVN 0x%08X", node->gam_gdp_nvn);
263 seq_printf(s, "\n\tKEY1 0x%08X", node->gam_gdp_key1);
264 seq_printf(s, "\n\tKEY2 0x%08X", node->gam_gdp_key2);
265 seq_printf(s, "\n\tPPT 0x%08X", node->gam_gdp_ppt);
266 gdp_dbg_ppt(s, node->gam_gdp_ppt);
267 seq_printf(s, "\n\tCML 0x%08X", node->gam_gdp_cml);
271 static int gdp_node_dbg_show(struct seq_file *s, void *arg)
273 struct drm_info_node *node = s->private;
274 struct sti_gdp *gdp = (struct sti_gdp *)node->info_ent->data;
277 for (b = 0; b < GDP_NODE_NB_BANK; b++) {
278 seq_printf(s, "\n%s[%d].top", sti_plane_to_str(&gdp->plane), b);
279 gdp_node_dump_node(s, gdp->node_list[b].top_field);
280 seq_printf(s, "\n%s[%d].btm", sti_plane_to_str(&gdp->plane), b);
281 gdp_node_dump_node(s, gdp->node_list[b].btm_field);
287 static struct drm_info_list gdp0_debugfs_files[] = {
288 { "gdp0", gdp_dbg_show, 0, NULL },
289 { "gdp0_node", gdp_node_dbg_show, 0, NULL },
292 static struct drm_info_list gdp1_debugfs_files[] = {
293 { "gdp1", gdp_dbg_show, 0, NULL },
294 { "gdp1_node", gdp_node_dbg_show, 0, NULL },
297 static struct drm_info_list gdp2_debugfs_files[] = {
298 { "gdp2", gdp_dbg_show, 0, NULL },
299 { "gdp2_node", gdp_node_dbg_show, 0, NULL },
302 static struct drm_info_list gdp3_debugfs_files[] = {
303 { "gdp3", gdp_dbg_show, 0, NULL },
304 { "gdp3_node", gdp_node_dbg_show, 0, NULL },
307 static int gdp_debugfs_init(struct sti_gdp *gdp, struct drm_minor *minor)
310 struct drm_info_list *gdp_debugfs_files;
313 switch (gdp->plane.desc) {
315 gdp_debugfs_files = gdp0_debugfs_files;
316 nb_files = ARRAY_SIZE(gdp0_debugfs_files);
319 gdp_debugfs_files = gdp1_debugfs_files;
320 nb_files = ARRAY_SIZE(gdp1_debugfs_files);
323 gdp_debugfs_files = gdp2_debugfs_files;
324 nb_files = ARRAY_SIZE(gdp2_debugfs_files);
327 gdp_debugfs_files = gdp3_debugfs_files;
328 nb_files = ARRAY_SIZE(gdp3_debugfs_files);
334 for (i = 0; i < nb_files; i++)
335 gdp_debugfs_files[i].data = gdp;
337 return drm_debugfs_create_files(gdp_debugfs_files,
339 minor->debugfs_root, minor);
342 static int sti_gdp_fourcc2format(int fourcc)
345 case DRM_FORMAT_XRGB8888:
346 return GDP_RGB888_32;
347 case DRM_FORMAT_XBGR8888:
349 case DRM_FORMAT_ARGB8888:
351 case DRM_FORMAT_ABGR8888:
353 case DRM_FORMAT_ARGB4444:
355 case DRM_FORMAT_ARGB1555:
357 case DRM_FORMAT_RGB565:
359 case DRM_FORMAT_RGB888:
365 static int sti_gdp_get_alpharange(int format)
371 return GAM_GDP_ALPHARANGE_255;
377 * sti_gdp_get_free_nodes
380 * Look for a GDP node list that is not currently read by the HW.
383 * Pointer to the free GDP node list
385 static struct sti_gdp_node_list *sti_gdp_get_free_nodes(struct sti_gdp *gdp)
390 hw_nvn = readl(gdp->regs + GAM_GDP_NVN_OFFSET);
394 for (i = 0; i < GDP_NODE_NB_BANK; i++)
395 if ((hw_nvn != gdp->node_list[i].btm_field_paddr) &&
396 (hw_nvn != gdp->node_list[i].top_field_paddr))
397 return &gdp->node_list[i];
399 /* in hazardious cases restart with the first node */
400 DRM_ERROR("inconsistent NVN for %s: 0x%08X\n",
401 sti_plane_to_str(&gdp->plane), hw_nvn);
404 return &gdp->node_list[0];
408 * sti_gdp_get_current_nodes
411 * Look for GDP nodes that are currently read by the HW.
414 * Pointer to the current GDP node list
417 struct sti_gdp_node_list *sti_gdp_get_current_nodes(struct sti_gdp *gdp)
422 hw_nvn = readl(gdp->regs + GAM_GDP_NVN_OFFSET);
426 for (i = 0; i < GDP_NODE_NB_BANK; i++)
427 if ((hw_nvn == gdp->node_list[i].btm_field_paddr) ||
428 (hw_nvn == gdp->node_list[i].top_field_paddr))
429 return &gdp->node_list[i];
432 DRM_DEBUG_DRIVER("Warning, NVN 0x%08X for %s does not match any node\n",
433 hw_nvn, sti_plane_to_str(&gdp->plane));
444 static void sti_gdp_disable(struct sti_gdp *gdp)
448 DRM_DEBUG_DRIVER("%s\n", sti_plane_to_str(&gdp->plane));
450 /* Set the nodes as 'to be ignored on mixer' */
451 for (i = 0; i < GDP_NODE_NB_BANK; i++) {
452 gdp->node_list[i].top_field->gam_gdp_ppt |= GAM_GDP_PPT_IGNORE;
453 gdp->node_list[i].btm_field->gam_gdp_ppt |= GAM_GDP_PPT_IGNORE;
456 if (sti_vtg_unregister_client(gdp->vtg, &gdp->vtg_field_nb))
457 DRM_DEBUG_DRIVER("Warning: cannot unregister VTG notifier\n");
460 clk_disable_unprepare(gdp->clk_pix);
462 gdp->plane.status = STI_PLANE_DISABLED;
468 * @nb: notifier block
469 * @event: event message
470 * @data: private data
472 * Handle VTG top field and bottom field event.
477 static int sti_gdp_field_cb(struct notifier_block *nb,
478 unsigned long event, void *data)
480 struct sti_gdp *gdp = container_of(nb, struct sti_gdp, vtg_field_nb);
482 if (gdp->plane.status == STI_PLANE_FLUSHING) {
483 /* disable need to be synchronize on vsync event */
484 DRM_DEBUG_DRIVER("Vsync event received => disable %s\n",
485 sti_plane_to_str(&gdp->plane));
487 sti_gdp_disable(gdp);
491 case VTG_TOP_FIELD_EVENT:
492 gdp->is_curr_top = true;
494 case VTG_BOTTOM_FIELD_EVENT:
495 gdp->is_curr_top = false;
498 DRM_ERROR("unsupported event: %lu\n", event);
505 static void sti_gdp_init(struct sti_gdp *gdp)
507 struct device_node *np = gdp->dev->of_node;
510 unsigned int i, size;
512 /* Allocate all the nodes within a single memory page */
513 size = sizeof(struct sti_gdp_node) *
514 GDP_NODE_PER_FIELD * GDP_NODE_NB_BANK;
515 base = dma_alloc_wc(gdp->dev, size, &dma_addr, GFP_KERNEL | GFP_DMA);
518 DRM_ERROR("Failed to allocate memory for GDP node\n");
521 memset(base, 0, size);
523 for (i = 0; i < GDP_NODE_NB_BANK; i++) {
524 if (dma_addr & 0xF) {
525 DRM_ERROR("Mem alignment failed\n");
528 gdp->node_list[i].top_field = base;
529 gdp->node_list[i].top_field_paddr = dma_addr;
531 DRM_DEBUG_DRIVER("node[%d].top_field=%p\n", i, base);
532 base += sizeof(struct sti_gdp_node);
533 dma_addr += sizeof(struct sti_gdp_node);
535 if (dma_addr & 0xF) {
536 DRM_ERROR("Mem alignment failed\n");
539 gdp->node_list[i].btm_field = base;
540 gdp->node_list[i].btm_field_paddr = dma_addr;
541 DRM_DEBUG_DRIVER("node[%d].btm_field=%p\n", i, base);
542 base += sizeof(struct sti_gdp_node);
543 dma_addr += sizeof(struct sti_gdp_node);
546 if (of_device_is_compatible(np, "st,stih407-compositor")) {
547 /* GDP of STiH407 chip have its own pixel clock */
550 switch (gdp->plane.desc) {
552 clk_name = "pix_gdp1";
555 clk_name = "pix_gdp2";
558 clk_name = "pix_gdp3";
561 clk_name = "pix_gdp4";
564 DRM_ERROR("GDP id not recognized\n");
568 gdp->clk_pix = devm_clk_get(gdp->dev, clk_name);
569 if (IS_ERR(gdp->clk_pix))
570 DRM_ERROR("Cannot get %s clock\n", clk_name);
572 gdp->clk_main_parent = devm_clk_get(gdp->dev, "main_parent");
573 if (IS_ERR(gdp->clk_main_parent))
574 DRM_ERROR("Cannot get main_parent clock\n");
576 gdp->clk_aux_parent = devm_clk_get(gdp->dev, "aux_parent");
577 if (IS_ERR(gdp->clk_aux_parent))
578 DRM_ERROR("Cannot get aux_parent clock\n");
585 * @dst: requested destination size
588 * Return the cropped / clamped destination size
591 * cropped / clamped destination size
593 static int sti_gdp_get_dst(struct device *dev, int dst, int src)
599 dev_dbg(dev, "WARNING: GDP scale not supported, will crop\n");
603 dev_dbg(dev, "WARNING: GDP scale not supported, will clamp\n");
607 static int sti_gdp_atomic_check(struct drm_plane *drm_plane,
608 struct drm_plane_state *state)
610 struct sti_plane *plane = to_sti_plane(drm_plane);
611 struct sti_gdp *gdp = to_sti_gdp(plane);
612 struct drm_crtc *crtc = state->crtc;
613 struct sti_compositor *compo = dev_get_drvdata(gdp->dev);
614 struct drm_framebuffer *fb = state->fb;
615 struct drm_crtc_state *crtc_state;
616 struct sti_mixer *mixer;
617 struct drm_display_mode *mode;
618 int dst_x, dst_y, dst_w, dst_h;
619 int src_x, src_y, src_w, src_h;
622 /* no need for further checks if the plane is being disabled */
626 mixer = to_sti_mixer(crtc);
627 crtc_state = drm_atomic_get_crtc_state(state->state, crtc);
628 mode = &crtc_state->mode;
629 dst_x = state->crtc_x;
630 dst_y = state->crtc_y;
631 dst_w = clamp_val(state->crtc_w, 0, mode->hdisplay - dst_x);
632 dst_h = clamp_val(state->crtc_h, 0, mode->vdisplay - dst_y);
633 /* src_x are in 16.16 format */
634 src_x = state->src_x >> 16;
635 src_y = state->src_y >> 16;
636 src_w = clamp_val(state->src_w >> 16, 0, GAM_GDP_SIZE_MAX);
637 src_h = clamp_val(state->src_h >> 16, 0, GAM_GDP_SIZE_MAX);
639 format = sti_gdp_fourcc2format(fb->pixel_format);
641 DRM_ERROR("Format not supported by GDP %.4s\n",
642 (char *)&fb->pixel_format);
646 if (!drm_fb_cma_get_gem_obj(fb, 0)) {
647 DRM_ERROR("Can't get CMA GEM object for fb\n");
652 /* Register gdp callback */
653 gdp->vtg = compo->vtg[mixer->id];
654 if (sti_vtg_register_client(gdp->vtg,
655 &gdp->vtg_field_nb, crtc)) {
656 DRM_ERROR("Cannot register VTG notifier\n");
660 /* Set and enable gdp clock */
663 int rate = mode->clock * 1000;
667 * According to the mixer used, the gdp pixel clock
668 * should have a different parent clock.
670 if (mixer->id == STI_MIXER_MAIN)
671 clkp = gdp->clk_main_parent;
673 clkp = gdp->clk_aux_parent;
676 clk_set_parent(gdp->clk_pix, clkp);
678 res = clk_set_rate(gdp->clk_pix, rate);
680 DRM_ERROR("Cannot set rate (%dHz) for gdp\n",
685 if (clk_prepare_enable(gdp->clk_pix)) {
686 DRM_ERROR("Failed to prepare/enable gdp\n");
692 DRM_DEBUG_KMS("CRTC:%d (%s) drm plane:%d (%s)\n",
693 crtc->base.id, sti_mixer_to_str(mixer),
694 drm_plane->base.id, sti_plane_to_str(plane));
695 DRM_DEBUG_KMS("%s dst=(%dx%d)@(%d,%d) - src=(%dx%d)@(%d,%d)\n",
696 sti_plane_to_str(plane),
697 dst_w, dst_h, dst_x, dst_y,
698 src_w, src_h, src_x, src_y);
703 static void sti_gdp_atomic_update(struct drm_plane *drm_plane,
704 struct drm_plane_state *oldstate)
706 struct drm_plane_state *state = drm_plane->state;
707 struct sti_plane *plane = to_sti_plane(drm_plane);
708 struct sti_gdp *gdp = to_sti_gdp(plane);
709 struct drm_crtc *crtc = state->crtc;
710 struct drm_framebuffer *fb = state->fb;
711 struct drm_display_mode *mode;
712 int dst_x, dst_y, dst_w, dst_h;
713 int src_x, src_y, src_w, src_h;
714 struct drm_gem_cma_object *cma_obj;
715 struct sti_gdp_node_list *list;
716 struct sti_gdp_node_list *curr_list;
717 struct sti_gdp_node *top_field, *btm_field;
722 u32 ydo, xdo, yds, xds;
728 dst_x = state->crtc_x;
729 dst_y = state->crtc_y;
730 dst_w = clamp_val(state->crtc_w, 0, mode->hdisplay - dst_x);
731 dst_h = clamp_val(state->crtc_h, 0, mode->vdisplay - dst_y);
732 /* src_x are in 16.16 format */
733 src_x = state->src_x >> 16;
734 src_y = state->src_y >> 16;
735 src_w = clamp_val(state->src_w >> 16, 0, GAM_GDP_SIZE_MAX);
736 src_h = clamp_val(state->src_h >> 16, 0, GAM_GDP_SIZE_MAX);
738 list = sti_gdp_get_free_nodes(gdp);
739 top_field = list->top_field;
740 btm_field = list->btm_field;
742 dev_dbg(gdp->dev, "%s %s top_node:0x%p btm_node:0x%p\n", __func__,
743 sti_plane_to_str(plane), top_field, btm_field);
745 /* build the top field */
746 top_field->gam_gdp_agc = GAM_GDP_AGC_FULL_RANGE;
747 top_field->gam_gdp_ctl = WAIT_NEXT_VSYNC;
748 format = sti_gdp_fourcc2format(fb->pixel_format);
749 top_field->gam_gdp_ctl |= format;
750 top_field->gam_gdp_ctl |= sti_gdp_get_alpharange(format);
751 top_field->gam_gdp_ppt &= ~GAM_GDP_PPT_IGNORE;
753 cma_obj = drm_fb_cma_get_gem_obj(fb, 0);
755 DRM_DEBUG_DRIVER("drm FB:%d format:%.4s phys@:0x%lx\n", fb->base.id,
756 (char *)&fb->pixel_format,
757 (unsigned long)cma_obj->paddr);
759 /* pixel memory location */
760 bpp = drm_format_plane_cpp(fb->pixel_format, 0);
761 top_field->gam_gdp_pml = (u32)cma_obj->paddr + fb->offsets[0];
762 top_field->gam_gdp_pml += src_x * bpp;
763 top_field->gam_gdp_pml += src_y * fb->pitches[0];
765 /* output parameters (clamped / cropped) */
766 dst_w = sti_gdp_get_dst(gdp->dev, dst_w, src_w);
767 dst_h = sti_gdp_get_dst(gdp->dev, dst_h, src_h);
768 ydo = sti_vtg_get_line_number(*mode, dst_y);
769 yds = sti_vtg_get_line_number(*mode, dst_y + dst_h - 1);
770 xdo = sti_vtg_get_pixel_number(*mode, dst_x);
771 xds = sti_vtg_get_pixel_number(*mode, dst_x + dst_w - 1);
772 top_field->gam_gdp_vpo = (ydo << 16) | xdo;
773 top_field->gam_gdp_vps = (yds << 16) | xds;
775 /* input parameters */
777 top_field->gam_gdp_pmp = fb->pitches[0];
778 top_field->gam_gdp_size = src_h << 16 | src_w;
780 /* Same content and chained together */
781 memcpy(btm_field, top_field, sizeof(*btm_field));
782 top_field->gam_gdp_nvn = list->btm_field_paddr;
783 btm_field->gam_gdp_nvn = list->top_field_paddr;
785 /* Interlaced mode */
786 if (mode->flags & DRM_MODE_FLAG_INTERLACE)
787 btm_field->gam_gdp_pml = top_field->gam_gdp_pml +
790 /* Update the NVN field of the 'right' field of the current GDP node
791 * (being used by the HW) with the address of the updated ('free') top
793 * - In interlaced mode the 'right' field is the bottom field as we
794 * update frames starting from their top field
795 * - In progressive mode, we update both bottom and top fields which
797 * At the next VSYNC, the updated node list will be used by the HW.
799 curr_list = sti_gdp_get_current_nodes(gdp);
800 dma_updated_top = list->top_field_paddr;
801 dma_updated_btm = list->btm_field_paddr;
803 dev_dbg(gdp->dev, "Current NVN:0x%X\n",
804 readl(gdp->regs + GAM_GDP_NVN_OFFSET));
805 dev_dbg(gdp->dev, "Posted buff: %lx current buff: %x\n",
806 (unsigned long)cma_obj->paddr,
807 readl(gdp->regs + GAM_GDP_PML_OFFSET));
810 /* First update or invalid node should directly write in the
812 DRM_DEBUG_DRIVER("%s first update (or invalid node)\n",
813 sti_plane_to_str(plane));
815 writel(gdp->is_curr_top ?
816 dma_updated_btm : dma_updated_top,
817 gdp->regs + GAM_GDP_NVN_OFFSET);
821 if (mode->flags & DRM_MODE_FLAG_INTERLACE) {
822 if (gdp->is_curr_top) {
823 /* Do not update in the middle of the frame, but
824 * postpone the update after the bottom field has
826 curr_list->btm_field->gam_gdp_nvn = dma_updated_top;
828 /* Direct update to avoid one frame delay */
829 writel(dma_updated_top,
830 gdp->regs + GAM_GDP_NVN_OFFSET);
833 /* Direct update for progressive to avoid one frame delay */
834 writel(dma_updated_top, gdp->regs + GAM_GDP_NVN_OFFSET);
838 sti_plane_update_fps(plane, true, false);
840 plane->status = STI_PLANE_UPDATED;
843 static void sti_gdp_atomic_disable(struct drm_plane *drm_plane,
844 struct drm_plane_state *oldstate)
846 struct sti_plane *plane = to_sti_plane(drm_plane);
848 if (!oldstate->crtc) {
849 DRM_DEBUG_DRIVER("drm plane:%d not enabled\n",
854 DRM_DEBUG_DRIVER("CRTC:%d (%s) drm plane:%d (%s)\n",
855 oldstate->crtc->base.id,
856 sti_mixer_to_str(to_sti_mixer(oldstate->crtc)),
857 drm_plane->base.id, sti_plane_to_str(plane));
859 plane->status = STI_PLANE_DISABLING;
862 static const struct drm_plane_helper_funcs sti_gdp_helpers_funcs = {
863 .atomic_check = sti_gdp_atomic_check,
864 .atomic_update = sti_gdp_atomic_update,
865 .atomic_disable = sti_gdp_atomic_disable,
868 static void sti_gdp_destroy(struct drm_plane *drm_plane)
870 DRM_DEBUG_DRIVER("\n");
872 drm_plane_helper_disable(drm_plane);
873 drm_plane_cleanup(drm_plane);
876 static int sti_gdp_late_register(struct drm_plane *drm_plane)
878 struct sti_plane *plane = to_sti_plane(drm_plane);
879 struct sti_gdp *gdp = to_sti_gdp(plane);
881 return gdp_debugfs_init(gdp, drm_plane->dev->primary);
884 static const struct drm_plane_funcs sti_gdp_plane_helpers_funcs = {
885 .update_plane = drm_atomic_helper_update_plane,
886 .disable_plane = drm_atomic_helper_disable_plane,
887 .destroy = sti_gdp_destroy,
888 .set_property = drm_atomic_helper_plane_set_property,
889 .reset = sti_plane_reset,
890 .atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
891 .atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
892 .late_register = sti_gdp_late_register,
895 struct drm_plane *sti_gdp_create(struct drm_device *drm_dev,
896 struct device *dev, int desc,
897 void __iomem *baseaddr,
898 unsigned int possible_crtcs,
899 enum drm_plane_type type)
904 gdp = devm_kzalloc(dev, sizeof(*gdp), GFP_KERNEL);
906 DRM_ERROR("Failed to allocate memory for GDP\n");
911 gdp->regs = baseaddr;
912 gdp->plane.desc = desc;
913 gdp->plane.status = STI_PLANE_DISABLED;
915 gdp->vtg_field_nb.notifier_call = sti_gdp_field_cb;
919 res = drm_universal_plane_init(drm_dev, &gdp->plane.drm_plane,
921 &sti_gdp_plane_helpers_funcs,
922 gdp_supported_formats,
923 ARRAY_SIZE(gdp_supported_formats),
926 DRM_ERROR("Failed to initialize universal plane\n");
930 drm_plane_helper_add(&gdp->plane.drm_plane, &sti_gdp_helpers_funcs);
932 sti_plane_init_property(&gdp->plane, type);
934 return &gdp->plane.drm_plane;
937 devm_kfree(dev, gdp);