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-rw-r--r--drivers/gpu/drm/tegra/dc.c1264
1 files changed, 1264 insertions, 0 deletions
diff --git a/drivers/gpu/drm/tegra/dc.c b/drivers/gpu/drm/tegra/dc.c
new file mode 100644
index 000000000000..ae1cb31ead7e
--- /dev/null
+++ b/drivers/gpu/drm/tegra/dc.c
@@ -0,0 +1,1264 @@
1/*
2 * Copyright (C) 2012 Avionic Design GmbH
3 * Copyright (C) 2012 NVIDIA CORPORATION. All rights reserved.
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation.
8 */
9
10#include <linux/clk.h>
11#include <linux/clk/tegra.h>
12#include <linux/debugfs.h>
13
14#include "dc.h"
15#include "drm.h"
16#include "gem.h"
17
18struct tegra_plane {
19 struct drm_plane base;
20 unsigned int index;
21};
22
23static inline struct tegra_plane *to_tegra_plane(struct drm_plane *plane)
24{
25 return container_of(plane, struct tegra_plane, base);
26}
27
28static int tegra_plane_update(struct drm_plane *plane, struct drm_crtc *crtc,
29 struct drm_framebuffer *fb, int crtc_x,
30 int crtc_y, unsigned int crtc_w,
31 unsigned int crtc_h, uint32_t src_x,
32 uint32_t src_y, uint32_t src_w, uint32_t src_h)
33{
34 struct tegra_plane *p = to_tegra_plane(plane);
35 struct tegra_dc *dc = to_tegra_dc(crtc);
36 struct tegra_dc_window window;
37 unsigned int i;
38
39 memset(&window, 0, sizeof(window));
40 window.src.x = src_x >> 16;
41 window.src.y = src_y >> 16;
42 window.src.w = src_w >> 16;
43 window.src.h = src_h >> 16;
44 window.dst.x = crtc_x;
45 window.dst.y = crtc_y;
46 window.dst.w = crtc_w;
47 window.dst.h = crtc_h;
48 window.format = tegra_dc_format(fb->pixel_format);
49 window.bits_per_pixel = fb->bits_per_pixel;
50 window.bottom_up = tegra_fb_is_bottom_up(fb);
51 window.tiled = tegra_fb_is_tiled(fb);
52
53 for (i = 0; i < drm_format_num_planes(fb->pixel_format); i++) {
54 struct tegra_bo *bo = tegra_fb_get_plane(fb, i);
55
56 window.base[i] = bo->paddr + fb->offsets[i];
57
58 /*
59 * Tegra doesn't support different strides for U and V planes
60 * so we display a warning if the user tries to display a
61 * framebuffer with such a configuration.
62 */
63 if (i >= 2) {
64 if (fb->pitches[i] != window.stride[1])
65 DRM_ERROR("unsupported UV-plane configuration\n");
66 } else {
67 window.stride[i] = fb->pitches[i];
68 }
69 }
70
71 return tegra_dc_setup_window(dc, p->index, &window);
72}
73
74static int tegra_plane_disable(struct drm_plane *plane)
75{
76 struct tegra_dc *dc = to_tegra_dc(plane->crtc);
77 struct tegra_plane *p = to_tegra_plane(plane);
78 unsigned long value;
79
80 if (!plane->crtc)
81 return 0;
82
83 value = WINDOW_A_SELECT << p->index;
84 tegra_dc_writel(dc, value, DC_CMD_DISPLAY_WINDOW_HEADER);
85
86 value = tegra_dc_readl(dc, DC_WIN_WIN_OPTIONS);
87 value &= ~WIN_ENABLE;
88 tegra_dc_writel(dc, value, DC_WIN_WIN_OPTIONS);
89
90 tegra_dc_writel(dc, WIN_A_UPDATE << p->index, DC_CMD_STATE_CONTROL);
91 tegra_dc_writel(dc, WIN_A_ACT_REQ << p->index, DC_CMD_STATE_CONTROL);
92
93 return 0;
94}
95
96static void tegra_plane_destroy(struct drm_plane *plane)
97{
98 struct tegra_plane *p = to_tegra_plane(plane);
99
100 tegra_plane_disable(plane);
101 drm_plane_cleanup(plane);
102 kfree(p);
103}
104
105static const struct drm_plane_funcs tegra_plane_funcs = {
106 .update_plane = tegra_plane_update,
107 .disable_plane = tegra_plane_disable,
108 .destroy = tegra_plane_destroy,
109};
110
111static const uint32_t plane_formats[] = {
112 DRM_FORMAT_XBGR8888,
113 DRM_FORMAT_XRGB8888,
114 DRM_FORMAT_RGB565,
115 DRM_FORMAT_UYVY,
116 DRM_FORMAT_YUV420,
117 DRM_FORMAT_YUV422,
118};
119
120static int tegra_dc_add_planes(struct drm_device *drm, struct tegra_dc *dc)
121{
122 unsigned int i;
123 int err = 0;
124
125 for (i = 0; i < 2; i++) {
126 struct tegra_plane *plane;
127
128 plane = kzalloc(sizeof(*plane), GFP_KERNEL);
129 if (!plane)
130 return -ENOMEM;
131
132 plane->index = 1 + i;
133
134 err = drm_plane_init(drm, &plane->base, 1 << dc->pipe,
135 &tegra_plane_funcs, plane_formats,
136 ARRAY_SIZE(plane_formats), false);
137 if (err < 0) {
138 kfree(plane);
139 return err;
140 }
141 }
142
143 return 0;
144}
145
146static int tegra_dc_set_base(struct tegra_dc *dc, int x, int y,
147 struct drm_framebuffer *fb)
148{
149 unsigned int format = tegra_dc_format(fb->pixel_format);
150 struct tegra_bo *bo = tegra_fb_get_plane(fb, 0);
151 unsigned int h_offset = 0, v_offset = 0;
152 unsigned long value;
153
154 tegra_dc_writel(dc, WINDOW_A_SELECT, DC_CMD_DISPLAY_WINDOW_HEADER);
155
156 value = fb->offsets[0] + y * fb->pitches[0] +
157 x * fb->bits_per_pixel / 8;
158
159 tegra_dc_writel(dc, bo->paddr + value, DC_WINBUF_START_ADDR);
160 tegra_dc_writel(dc, fb->pitches[0], DC_WIN_LINE_STRIDE);
161 tegra_dc_writel(dc, format, DC_WIN_COLOR_DEPTH);
162
163 if (tegra_fb_is_tiled(fb)) {
164 value = DC_WIN_BUFFER_ADDR_MODE_TILE_UV |
165 DC_WIN_BUFFER_ADDR_MODE_TILE;
166 } else {
167 value = DC_WIN_BUFFER_ADDR_MODE_LINEAR_UV |
168 DC_WIN_BUFFER_ADDR_MODE_LINEAR;
169 }
170
171 tegra_dc_writel(dc, value, DC_WIN_BUFFER_ADDR_MODE);
172
173 /* make sure bottom-up buffers are properly displayed */
174 if (tegra_fb_is_bottom_up(fb)) {
175 value = tegra_dc_readl(dc, DC_WIN_WIN_OPTIONS);
176 value |= INVERT_V;
177 tegra_dc_writel(dc, value, DC_WIN_WIN_OPTIONS);
178
179 v_offset += fb->height - 1;
180 } else {
181 value = tegra_dc_readl(dc, DC_WIN_WIN_OPTIONS);
182 value &= ~INVERT_V;
183 tegra_dc_writel(dc, value, DC_WIN_WIN_OPTIONS);
184 }
185
186 tegra_dc_writel(dc, h_offset, DC_WINBUF_ADDR_H_OFFSET);
187 tegra_dc_writel(dc, v_offset, DC_WINBUF_ADDR_V_OFFSET);
188
189 value = GENERAL_UPDATE | WIN_A_UPDATE;
190 tegra_dc_writel(dc, value, DC_CMD_STATE_CONTROL);
191
192 value = GENERAL_ACT_REQ | WIN_A_ACT_REQ;
193 tegra_dc_writel(dc, value, DC_CMD_STATE_CONTROL);
194
195 return 0;
196}
197
198void tegra_dc_enable_vblank(struct tegra_dc *dc)
199{
200 unsigned long value, flags;
201
202 spin_lock_irqsave(&dc->lock, flags);
203
204 value = tegra_dc_readl(dc, DC_CMD_INT_MASK);
205 value |= VBLANK_INT;
206 tegra_dc_writel(dc, value, DC_CMD_INT_MASK);
207
208 spin_unlock_irqrestore(&dc->lock, flags);
209}
210
211void tegra_dc_disable_vblank(struct tegra_dc *dc)
212{
213 unsigned long value, flags;
214
215 spin_lock_irqsave(&dc->lock, flags);
216
217 value = tegra_dc_readl(dc, DC_CMD_INT_MASK);
218 value &= ~VBLANK_INT;
219 tegra_dc_writel(dc, value, DC_CMD_INT_MASK);
220
221 spin_unlock_irqrestore(&dc->lock, flags);
222}
223
224static void tegra_dc_finish_page_flip(struct tegra_dc *dc)
225{
226 struct drm_device *drm = dc->base.dev;
227 struct drm_crtc *crtc = &dc->base;
228 unsigned long flags, base;
229 struct tegra_bo *bo;
230
231 if (!dc->event)
232 return;
233
234 bo = tegra_fb_get_plane(crtc->fb, 0);
235
236 /* check if new start address has been latched */
237 tegra_dc_writel(dc, READ_MUX, DC_CMD_STATE_ACCESS);
238 base = tegra_dc_readl(dc, DC_WINBUF_START_ADDR);
239 tegra_dc_writel(dc, 0, DC_CMD_STATE_ACCESS);
240
241 if (base == bo->paddr + crtc->fb->offsets[0]) {
242 spin_lock_irqsave(&drm->event_lock, flags);
243 drm_send_vblank_event(drm, dc->pipe, dc->event);
244 drm_vblank_put(drm, dc->pipe);
245 dc->event = NULL;
246 spin_unlock_irqrestore(&drm->event_lock, flags);
247 }
248}
249
250void tegra_dc_cancel_page_flip(struct drm_crtc *crtc, struct drm_file *file)
251{
252 struct tegra_dc *dc = to_tegra_dc(crtc);
253 struct drm_device *drm = crtc->dev;
254 unsigned long flags;
255
256 spin_lock_irqsave(&drm->event_lock, flags);
257
258 if (dc->event && dc->event->base.file_priv == file) {
259 dc->event->base.destroy(&dc->event->base);
260 drm_vblank_put(drm, dc->pipe);
261 dc->event = NULL;
262 }
263
264 spin_unlock_irqrestore(&drm->event_lock, flags);
265}
266
267static int tegra_dc_page_flip(struct drm_crtc *crtc, struct drm_framebuffer *fb,
268 struct drm_pending_vblank_event *event, uint32_t page_flip_flags)
269{
270 struct tegra_dc *dc = to_tegra_dc(crtc);
271 struct drm_device *drm = crtc->dev;
272
273 if (dc->event)
274 return -EBUSY;
275
276 if (event) {
277 event->pipe = dc->pipe;
278 dc->event = event;
279 drm_vblank_get(drm, dc->pipe);
280 }
281
282 tegra_dc_set_base(dc, 0, 0, fb);
283 crtc->fb = fb;
284
285 return 0;
286}
287
288static void drm_crtc_clear(struct drm_crtc *crtc)
289{
290 memset(crtc, 0, sizeof(*crtc));
291}
292
293static void tegra_dc_destroy(struct drm_crtc *crtc)
294{
295 drm_crtc_cleanup(crtc);
296 drm_crtc_clear(crtc);
297}
298
299static const struct drm_crtc_funcs tegra_crtc_funcs = {
300 .page_flip = tegra_dc_page_flip,
301 .set_config = drm_crtc_helper_set_config,
302 .destroy = tegra_dc_destroy,
303};
304
305static void tegra_crtc_disable(struct drm_crtc *crtc)
306{
307 struct tegra_dc *dc = to_tegra_dc(crtc);
308 struct drm_device *drm = crtc->dev;
309 struct drm_plane *plane;
310
311 list_for_each_entry(plane, &drm->mode_config.plane_list, head) {
312 if (plane->crtc == crtc) {
313 tegra_plane_disable(plane);
314 plane->crtc = NULL;
315
316 if (plane->fb) {
317 drm_framebuffer_unreference(plane->fb);
318 plane->fb = NULL;
319 }
320 }
321 }
322
323 drm_vblank_off(drm, dc->pipe);
324}
325
326static bool tegra_crtc_mode_fixup(struct drm_crtc *crtc,
327 const struct drm_display_mode *mode,
328 struct drm_display_mode *adjusted)
329{
330 return true;
331}
332
333static inline u32 compute_dda_inc(unsigned int in, unsigned int out, bool v,
334 unsigned int bpp)
335{
336 fixed20_12 outf = dfixed_init(out);
337 fixed20_12 inf = dfixed_init(in);
338 u32 dda_inc;
339 int max;
340
341 if (v)
342 max = 15;
343 else {
344 switch (bpp) {
345 case 2:
346 max = 8;
347 break;
348
349 default:
350 WARN_ON_ONCE(1);
351 /* fallthrough */
352 case 4:
353 max = 4;
354 break;
355 }
356 }
357
358 outf.full = max_t(u32, outf.full - dfixed_const(1), dfixed_const(1));
359 inf.full -= dfixed_const(1);
360
361 dda_inc = dfixed_div(inf, outf);
362 dda_inc = min_t(u32, dda_inc, dfixed_const(max));
363
364 return dda_inc;
365}
366
367static inline u32 compute_initial_dda(unsigned int in)
368{
369 fixed20_12 inf = dfixed_init(in);
370 return dfixed_frac(inf);
371}
372
373static int tegra_dc_set_timings(struct tegra_dc *dc,
374 struct drm_display_mode *mode)
375{
376 /* TODO: For HDMI compliance, h & v ref_to_sync should be set to 1 */
377 unsigned int h_ref_to_sync = 0;
378 unsigned int v_ref_to_sync = 0;
379 unsigned long value;
380
381 tegra_dc_writel(dc, 0x0, DC_DISP_DISP_TIMING_OPTIONS);
382
383 value = (v_ref_to_sync << 16) | h_ref_to_sync;
384 tegra_dc_writel(dc, value, DC_DISP_REF_TO_SYNC);
385
386 value = ((mode->vsync_end - mode->vsync_start) << 16) |
387 ((mode->hsync_end - mode->hsync_start) << 0);
388 tegra_dc_writel(dc, value, DC_DISP_SYNC_WIDTH);
389
390 value = ((mode->vtotal - mode->vsync_end) << 16) |
391 ((mode->htotal - mode->hsync_end) << 0);
392 tegra_dc_writel(dc, value, DC_DISP_BACK_PORCH);
393
394 value = ((mode->vsync_start - mode->vdisplay) << 16) |
395 ((mode->hsync_start - mode->hdisplay) << 0);
396 tegra_dc_writel(dc, value, DC_DISP_FRONT_PORCH);
397
398 value = (mode->vdisplay << 16) | mode->hdisplay;
399 tegra_dc_writel(dc, value, DC_DISP_ACTIVE);
400
401 return 0;
402}
403
404static int tegra_crtc_setup_clk(struct drm_crtc *crtc,
405 struct drm_display_mode *mode,
406 unsigned long *div)
407{
408 unsigned long pclk = mode->clock * 1000, rate;
409 struct tegra_dc *dc = to_tegra_dc(crtc);
410 struct tegra_output *output = NULL;
411 struct drm_encoder *encoder;
412 long err;
413
414 list_for_each_entry(encoder, &crtc->dev->mode_config.encoder_list, head)
415 if (encoder->crtc == crtc) {
416 output = encoder_to_output(encoder);
417 break;
418 }
419
420 if (!output)
421 return -ENODEV;
422
423 /*
424 * This assumes that the display controller will divide its parent
425 * clock by 2 to generate the pixel clock.
426 */
427 err = tegra_output_setup_clock(output, dc->clk, pclk * 2);
428 if (err < 0) {
429 dev_err(dc->dev, "failed to setup clock: %ld\n", err);
430 return err;
431 }
432
433 rate = clk_get_rate(dc->clk);
434 *div = (rate * 2 / pclk) - 2;
435
436 DRM_DEBUG_KMS("rate: %lu, div: %lu\n", rate, *div);
437
438 return 0;
439}
440
441static bool tegra_dc_format_is_yuv(unsigned int format, bool *planar)
442{
443 switch (format) {
444 case WIN_COLOR_DEPTH_YCbCr422:
445 case WIN_COLOR_DEPTH_YUV422:
446 if (planar)
447 *planar = false;
448
449 return true;
450
451 case WIN_COLOR_DEPTH_YCbCr420P:
452 case WIN_COLOR_DEPTH_YUV420P:
453 case WIN_COLOR_DEPTH_YCbCr422P:
454 case WIN_COLOR_DEPTH_YUV422P:
455 case WIN_COLOR_DEPTH_YCbCr422R:
456 case WIN_COLOR_DEPTH_YUV422R:
457 case WIN_COLOR_DEPTH_YCbCr422RA:
458 case WIN_COLOR_DEPTH_YUV422RA:
459 if (planar)
460 *planar = true;
461
462 return true;
463 }
464
465 return false;
466}
467
468int tegra_dc_setup_window(struct tegra_dc *dc, unsigned int index,
469 const struct tegra_dc_window *window)
470{
471 unsigned h_offset, v_offset, h_size, v_size, h_dda, v_dda, bpp;
472 unsigned long value;
473 bool yuv, planar;
474
475 /*
476 * For YUV planar modes, the number of bytes per pixel takes into
477 * account only the luma component and therefore is 1.
478 */
479 yuv = tegra_dc_format_is_yuv(window->format, &planar);
480 if (!yuv)
481 bpp = window->bits_per_pixel / 8;
482 else
483 bpp = planar ? 1 : 2;
484
485 value = WINDOW_A_SELECT << index;
486 tegra_dc_writel(dc, value, DC_CMD_DISPLAY_WINDOW_HEADER);
487
488 tegra_dc_writel(dc, window->format, DC_WIN_COLOR_DEPTH);
489 tegra_dc_writel(dc, 0, DC_WIN_BYTE_SWAP);
490
491 value = V_POSITION(window->dst.y) | H_POSITION(window->dst.x);
492 tegra_dc_writel(dc, value, DC_WIN_POSITION);
493
494 value = V_SIZE(window->dst.h) | H_SIZE(window->dst.w);
495 tegra_dc_writel(dc, value, DC_WIN_SIZE);
496
497 h_offset = window->src.x * bpp;
498 v_offset = window->src.y;
499 h_size = window->src.w * bpp;
500 v_size = window->src.h;
501
502 value = V_PRESCALED_SIZE(v_size) | H_PRESCALED_SIZE(h_size);
503 tegra_dc_writel(dc, value, DC_WIN_PRESCALED_SIZE);
504
505 /*
506 * For DDA computations the number of bytes per pixel for YUV planar
507 * modes needs to take into account all Y, U and V components.
508 */
509 if (yuv && planar)
510 bpp = 2;
511
512 h_dda = compute_dda_inc(window->src.w, window->dst.w, false, bpp);
513 v_dda = compute_dda_inc(window->src.h, window->dst.h, true, bpp);
514
515 value = V_DDA_INC(v_dda) | H_DDA_INC(h_dda);
516 tegra_dc_writel(dc, value, DC_WIN_DDA_INC);
517
518 h_dda = compute_initial_dda(window->src.x);
519 v_dda = compute_initial_dda(window->src.y);
520
521 tegra_dc_writel(dc, h_dda, DC_WIN_H_INITIAL_DDA);
522 tegra_dc_writel(dc, v_dda, DC_WIN_V_INITIAL_DDA);
523
524 tegra_dc_writel(dc, 0, DC_WIN_UV_BUF_STRIDE);
525 tegra_dc_writel(dc, 0, DC_WIN_BUF_STRIDE);
526
527 tegra_dc_writel(dc, window->base[0], DC_WINBUF_START_ADDR);
528
529 if (yuv && planar) {
530 tegra_dc_writel(dc, window->base[1], DC_WINBUF_START_ADDR_U);
531 tegra_dc_writel(dc, window->base[2], DC_WINBUF_START_ADDR_V);
532 value = window->stride[1] << 16 | window->stride[0];
533 tegra_dc_writel(dc, value, DC_WIN_LINE_STRIDE);
534 } else {
535 tegra_dc_writel(dc, window->stride[0], DC_WIN_LINE_STRIDE);
536 }
537
538 if (window->bottom_up)
539 v_offset += window->src.h - 1;
540
541 tegra_dc_writel(dc, h_offset, DC_WINBUF_ADDR_H_OFFSET);
542 tegra_dc_writel(dc, v_offset, DC_WINBUF_ADDR_V_OFFSET);
543
544 if (window->tiled) {
545 value = DC_WIN_BUFFER_ADDR_MODE_TILE_UV |
546 DC_WIN_BUFFER_ADDR_MODE_TILE;
547 } else {
548 value = DC_WIN_BUFFER_ADDR_MODE_LINEAR_UV |
549 DC_WIN_BUFFER_ADDR_MODE_LINEAR;
550 }
551
552 tegra_dc_writel(dc, value, DC_WIN_BUFFER_ADDR_MODE);
553
554 value = WIN_ENABLE;
555
556 if (yuv) {
557 /* setup default colorspace conversion coefficients */
558 tegra_dc_writel(dc, 0x00f0, DC_WIN_CSC_YOF);
559 tegra_dc_writel(dc, 0x012a, DC_WIN_CSC_KYRGB);
560 tegra_dc_writel(dc, 0x0000, DC_WIN_CSC_KUR);
561 tegra_dc_writel(dc, 0x0198, DC_WIN_CSC_KVR);
562 tegra_dc_writel(dc, 0x039b, DC_WIN_CSC_KUG);
563 tegra_dc_writel(dc, 0x032f, DC_WIN_CSC_KVG);
564 tegra_dc_writel(dc, 0x0204, DC_WIN_CSC_KUB);
565 tegra_dc_writel(dc, 0x0000, DC_WIN_CSC_KVB);
566
567 value |= CSC_ENABLE;
568 } else if (window->bits_per_pixel < 24) {
569 value |= COLOR_EXPAND;
570 }
571
572 if (window->bottom_up)
573 value |= INVERT_V;
574
575 tegra_dc_writel(dc, value, DC_WIN_WIN_OPTIONS);
576
577 /*
578 * Disable blending and assume Window A is the bottom-most window,
579 * Window C is the top-most window and Window B is in the middle.
580 */
581 tegra_dc_writel(dc, 0xffff00, DC_WIN_BLEND_NOKEY);
582 tegra_dc_writel(dc, 0xffff00, DC_WIN_BLEND_1WIN);
583
584 switch (index) {
585 case 0:
586 tegra_dc_writel(dc, 0x000000, DC_WIN_BLEND_2WIN_X);
587 tegra_dc_writel(dc, 0x000000, DC_WIN_BLEND_2WIN_Y);
588 tegra_dc_writel(dc, 0x000000, DC_WIN_BLEND_3WIN_XY);
589 break;
590
591 case 1:
592 tegra_dc_writel(dc, 0xffff00, DC_WIN_BLEND_2WIN_X);
593 tegra_dc_writel(dc, 0x000000, DC_WIN_BLEND_2WIN_Y);
594 tegra_dc_writel(dc, 0x000000, DC_WIN_BLEND_3WIN_XY);
595 break;
596
597 case 2:
598 tegra_dc_writel(dc, 0xffff00, DC_WIN_BLEND_2WIN_X);
599 tegra_dc_writel(dc, 0xffff00, DC_WIN_BLEND_2WIN_Y);
600 tegra_dc_writel(dc, 0xffff00, DC_WIN_BLEND_3WIN_XY);
601 break;
602 }
603
604 tegra_dc_writel(dc, WIN_A_UPDATE << index, DC_CMD_STATE_CONTROL);
605 tegra_dc_writel(dc, WIN_A_ACT_REQ << index, DC_CMD_STATE_CONTROL);
606
607 return 0;
608}
609
610unsigned int tegra_dc_format(uint32_t format)
611{
612 switch (format) {
613 case DRM_FORMAT_XBGR8888:
614 return WIN_COLOR_DEPTH_R8G8B8A8;
615
616 case DRM_FORMAT_XRGB8888:
617 return WIN_COLOR_DEPTH_B8G8R8A8;
618
619 case DRM_FORMAT_RGB565:
620 return WIN_COLOR_DEPTH_B5G6R5;
621
622 case DRM_FORMAT_UYVY:
623 return WIN_COLOR_DEPTH_YCbCr422;
624
625 case DRM_FORMAT_YUV420:
626 return WIN_COLOR_DEPTH_YCbCr420P;
627
628 case DRM_FORMAT_YUV422:
629 return WIN_COLOR_DEPTH_YCbCr422P;
630
631 default:
632 break;
633 }
634
635 WARN(1, "unsupported pixel format %u, using default\n", format);
636 return WIN_COLOR_DEPTH_B8G8R8A8;
637}
638
639static int tegra_crtc_mode_set(struct drm_crtc *crtc,
640 struct drm_display_mode *mode,
641 struct drm_display_mode *adjusted,
642 int x, int y, struct drm_framebuffer *old_fb)
643{
644 struct tegra_bo *bo = tegra_fb_get_plane(crtc->fb, 0);
645 struct tegra_dc *dc = to_tegra_dc(crtc);
646 struct tegra_dc_window window;
647 unsigned long div, value;
648 int err;
649
650 drm_vblank_pre_modeset(crtc->dev, dc->pipe);
651
652 err = tegra_crtc_setup_clk(crtc, mode, &div);
653 if (err) {
654 dev_err(dc->dev, "failed to setup clock for CRTC: %d\n", err);
655 return err;
656 }
657
658 /* program display mode */
659 tegra_dc_set_timings(dc, mode);
660
661 value = DE_SELECT_ACTIVE | DE_CONTROL_NORMAL;
662 tegra_dc_writel(dc, value, DC_DISP_DATA_ENABLE_OPTIONS);
663
664 value = tegra_dc_readl(dc, DC_COM_PIN_OUTPUT_POLARITY(1));
665 value &= ~LVS_OUTPUT_POLARITY_LOW;
666 value &= ~LHS_OUTPUT_POLARITY_LOW;
667 tegra_dc_writel(dc, value, DC_COM_PIN_OUTPUT_POLARITY(1));
668
669 value = DISP_DATA_FORMAT_DF1P1C | DISP_ALIGNMENT_MSB |
670 DISP_ORDER_RED_BLUE;
671 tegra_dc_writel(dc, value, DC_DISP_DISP_INTERFACE_CONTROL);
672
673 tegra_dc_writel(dc, 0x00010001, DC_DISP_SHIFT_CLOCK_OPTIONS);
674
675 value = SHIFT_CLK_DIVIDER(div) | PIXEL_CLK_DIVIDER_PCD1;
676 tegra_dc_writel(dc, value, DC_DISP_DISP_CLOCK_CONTROL);
677
678 /* setup window parameters */
679 memset(&window, 0, sizeof(window));
680 window.src.x = 0;
681 window.src.y = 0;
682 window.src.w = mode->hdisplay;
683 window.src.h = mode->vdisplay;
684 window.dst.x = 0;
685 window.dst.y = 0;
686 window.dst.w = mode->hdisplay;
687 window.dst.h = mode->vdisplay;
688 window.format = tegra_dc_format(crtc->fb->pixel_format);
689 window.bits_per_pixel = crtc->fb->bits_per_pixel;
690 window.stride[0] = crtc->fb->pitches[0];
691 window.base[0] = bo->paddr;
692
693 err = tegra_dc_setup_window(dc, 0, &window);
694 if (err < 0)
695 dev_err(dc->dev, "failed to enable root plane\n");
696
697 return 0;
698}
699
700static int tegra_crtc_mode_set_base(struct drm_crtc *crtc, int x, int y,
701 struct drm_framebuffer *old_fb)
702{
703 struct tegra_dc *dc = to_tegra_dc(crtc);
704
705 return tegra_dc_set_base(dc, x, y, crtc->fb);
706}
707
708static void tegra_crtc_prepare(struct drm_crtc *crtc)
709{
710 struct tegra_dc *dc = to_tegra_dc(crtc);
711 unsigned int syncpt;
712 unsigned long value;
713
714 /* hardware initialization */
715 tegra_periph_reset_deassert(dc->clk);
716 usleep_range(10000, 20000);
717
718 if (dc->pipe)
719 syncpt = SYNCPT_VBLANK1;
720 else
721 syncpt = SYNCPT_VBLANK0;
722
723 /* initialize display controller */
724 tegra_dc_writel(dc, 0x00000100, DC_CMD_GENERAL_INCR_SYNCPT_CNTRL);
725 tegra_dc_writel(dc, 0x100 | syncpt, DC_CMD_CONT_SYNCPT_VSYNC);
726
727 value = WIN_A_UF_INT | WIN_B_UF_INT | WIN_C_UF_INT | WIN_A_OF_INT;
728 tegra_dc_writel(dc, value, DC_CMD_INT_TYPE);
729
730 value = WIN_A_UF_INT | WIN_B_UF_INT | WIN_C_UF_INT |
731 WIN_A_OF_INT | WIN_B_OF_INT | WIN_C_OF_INT;
732 tegra_dc_writel(dc, value, DC_CMD_INT_POLARITY);
733
734 value = PW0_ENABLE | PW1_ENABLE | PW2_ENABLE | PW3_ENABLE |
735 PW4_ENABLE | PM0_ENABLE | PM1_ENABLE;
736 tegra_dc_writel(dc, value, DC_CMD_DISPLAY_POWER_CONTROL);
737
738 value = tegra_dc_readl(dc, DC_CMD_DISPLAY_COMMAND);
739 value |= DISP_CTRL_MODE_C_DISPLAY;
740 tegra_dc_writel(dc, value, DC_CMD_DISPLAY_COMMAND);
741
742 /* initialize timer */
743 value = CURSOR_THRESHOLD(0) | WINDOW_A_THRESHOLD(0x20) |
744 WINDOW_B_THRESHOLD(0x20) | WINDOW_C_THRESHOLD(0x20);
745 tegra_dc_writel(dc, value, DC_DISP_DISP_MEM_HIGH_PRIORITY);
746
747 value = CURSOR_THRESHOLD(0) | WINDOW_A_THRESHOLD(1) |
748 WINDOW_B_THRESHOLD(1) | WINDOW_C_THRESHOLD(1);
749 tegra_dc_writel(dc, value, DC_DISP_DISP_MEM_HIGH_PRIORITY_TIMER);
750
751 value = VBLANK_INT | WIN_A_UF_INT | WIN_B_UF_INT | WIN_C_UF_INT;
752 tegra_dc_writel(dc, value, DC_CMD_INT_ENABLE);
753
754 value = WIN_A_UF_INT | WIN_B_UF_INT | WIN_C_UF_INT;
755 tegra_dc_writel(dc, value, DC_CMD_INT_MASK);
756}
757
758static void tegra_crtc_commit(struct drm_crtc *crtc)
759{
760 struct tegra_dc *dc = to_tegra_dc(crtc);
761 unsigned long value;
762
763 value = GENERAL_UPDATE | WIN_A_UPDATE;
764 tegra_dc_writel(dc, value, DC_CMD_STATE_CONTROL);
765
766 value = GENERAL_ACT_REQ | WIN_A_ACT_REQ;
767 tegra_dc_writel(dc, value, DC_CMD_STATE_CONTROL);
768
769 drm_vblank_post_modeset(crtc->dev, dc->pipe);
770}
771
772static void tegra_crtc_load_lut(struct drm_crtc *crtc)
773{
774}
775
776static const struct drm_crtc_helper_funcs tegra_crtc_helper_funcs = {
777 .disable = tegra_crtc_disable,
778 .mode_fixup = tegra_crtc_mode_fixup,
779 .mode_set = tegra_crtc_mode_set,
780 .mode_set_base = tegra_crtc_mode_set_base,
781 .prepare = tegra_crtc_prepare,
782 .commit = tegra_crtc_commit,
783 .load_lut = tegra_crtc_load_lut,
784};
785
786static irqreturn_t tegra_dc_irq(int irq, void *data)
787{
788 struct tegra_dc *dc = data;
789 unsigned long status;
790
791 status = tegra_dc_readl(dc, DC_CMD_INT_STATUS);
792 tegra_dc_writel(dc, status, DC_CMD_INT_STATUS);
793
794 if (status & FRAME_END_INT) {
795 /*
796 dev_dbg(dc->dev, "%s(): frame end\n", __func__);
797 */
798 }
799
800 if (status & VBLANK_INT) {
801 /*
802 dev_dbg(dc->dev, "%s(): vertical blank\n", __func__);
803 */
804 drm_handle_vblank(dc->base.dev, dc->pipe);
805 tegra_dc_finish_page_flip(dc);
806 }
807
808 if (status & (WIN_A_UF_INT | WIN_B_UF_INT | WIN_C_UF_INT)) {
809 /*
810 dev_dbg(dc->dev, "%s(): underflow\n", __func__);
811 */
812 }
813
814 return IRQ_HANDLED;
815}
816
817static int tegra_dc_show_regs(struct seq_file *s, void *data)
818{
819 struct drm_info_node *node = s->private;
820 struct tegra_dc *dc = node->info_ent->data;
821
822#define DUMP_REG(name) \
823 seq_printf(s, "%-40s %#05x %08lx\n", #name, name, \
824 tegra_dc_readl(dc, name))
825
826 DUMP_REG(DC_CMD_GENERAL_INCR_SYNCPT);
827 DUMP_REG(DC_CMD_GENERAL_INCR_SYNCPT_CNTRL);
828 DUMP_REG(DC_CMD_GENERAL_INCR_SYNCPT_ERROR);
829 DUMP_REG(DC_CMD_WIN_A_INCR_SYNCPT);
830 DUMP_REG(DC_CMD_WIN_A_INCR_SYNCPT_CNTRL);
831 DUMP_REG(DC_CMD_WIN_A_INCR_SYNCPT_ERROR);
832 DUMP_REG(DC_CMD_WIN_B_INCR_SYNCPT);
833 DUMP_REG(DC_CMD_WIN_B_INCR_SYNCPT_CNTRL);
834 DUMP_REG(DC_CMD_WIN_B_INCR_SYNCPT_ERROR);
835 DUMP_REG(DC_CMD_WIN_C_INCR_SYNCPT);
836 DUMP_REG(DC_CMD_WIN_C_INCR_SYNCPT_CNTRL);
837 DUMP_REG(DC_CMD_WIN_C_INCR_SYNCPT_ERROR);
838 DUMP_REG(DC_CMD_CONT_SYNCPT_VSYNC);
839 DUMP_REG(DC_CMD_DISPLAY_COMMAND_OPTION0);
840 DUMP_REG(DC_CMD_DISPLAY_COMMAND);
841 DUMP_REG(DC_CMD_SIGNAL_RAISE);
842 DUMP_REG(DC_CMD_DISPLAY_POWER_CONTROL);
843 DUMP_REG(DC_CMD_INT_STATUS);
844 DUMP_REG(DC_CMD_INT_MASK);
845 DUMP_REG(DC_CMD_INT_ENABLE);
846 DUMP_REG(DC_CMD_INT_TYPE);
847 DUMP_REG(DC_CMD_INT_POLARITY);
848 DUMP_REG(DC_CMD_SIGNAL_RAISE1);
849 DUMP_REG(DC_CMD_SIGNAL_RAISE2);
850 DUMP_REG(DC_CMD_SIGNAL_RAISE3);
851 DUMP_REG(DC_CMD_STATE_ACCESS);
852 DUMP_REG(DC_CMD_STATE_CONTROL);
853 DUMP_REG(DC_CMD_DISPLAY_WINDOW_HEADER);
854 DUMP_REG(DC_CMD_REG_ACT_CONTROL);
855 DUMP_REG(DC_COM_CRC_CONTROL);
856 DUMP_REG(DC_COM_CRC_CHECKSUM);
857 DUMP_REG(DC_COM_PIN_OUTPUT_ENABLE(0));
858 DUMP_REG(DC_COM_PIN_OUTPUT_ENABLE(1));
859 DUMP_REG(DC_COM_PIN_OUTPUT_ENABLE(2));
860 DUMP_REG(DC_COM_PIN_OUTPUT_ENABLE(3));
861 DUMP_REG(DC_COM_PIN_OUTPUT_POLARITY(0));
862 DUMP_REG(DC_COM_PIN_OUTPUT_POLARITY(1));
863 DUMP_REG(DC_COM_PIN_OUTPUT_POLARITY(2));
864 DUMP_REG(DC_COM_PIN_OUTPUT_POLARITY(3));
865 DUMP_REG(DC_COM_PIN_OUTPUT_DATA(0));
866 DUMP_REG(DC_COM_PIN_OUTPUT_DATA(1));
867 DUMP_REG(DC_COM_PIN_OUTPUT_DATA(2));
868 DUMP_REG(DC_COM_PIN_OUTPUT_DATA(3));
869 DUMP_REG(DC_COM_PIN_INPUT_ENABLE(0));
870 DUMP_REG(DC_COM_PIN_INPUT_ENABLE(1));
871 DUMP_REG(DC_COM_PIN_INPUT_ENABLE(2));
872 DUMP_REG(DC_COM_PIN_INPUT_ENABLE(3));
873 DUMP_REG(DC_COM_PIN_INPUT_DATA(0));
874 DUMP_REG(DC_COM_PIN_INPUT_DATA(1));
875 DUMP_REG(DC_COM_PIN_OUTPUT_SELECT(0));
876 DUMP_REG(DC_COM_PIN_OUTPUT_SELECT(1));
877 DUMP_REG(DC_COM_PIN_OUTPUT_SELECT(2));
878 DUMP_REG(DC_COM_PIN_OUTPUT_SELECT(3));
879 DUMP_REG(DC_COM_PIN_OUTPUT_SELECT(4));
880 DUMP_REG(DC_COM_PIN_OUTPUT_SELECT(5));
881 DUMP_REG(DC_COM_PIN_OUTPUT_SELECT(6));
882 DUMP_REG(DC_COM_PIN_MISC_CONTROL);
883 DUMP_REG(DC_COM_PIN_PM0_CONTROL);
884 DUMP_REG(DC_COM_PIN_PM0_DUTY_CYCLE);
885 DUMP_REG(DC_COM_PIN_PM1_CONTROL);
886 DUMP_REG(DC_COM_PIN_PM1_DUTY_CYCLE);
887 DUMP_REG(DC_COM_SPI_CONTROL);
888 DUMP_REG(DC_COM_SPI_START_BYTE);
889 DUMP_REG(DC_COM_HSPI_WRITE_DATA_AB);
890 DUMP_REG(DC_COM_HSPI_WRITE_DATA_CD);
891 DUMP_REG(DC_COM_HSPI_CS_DC);
892 DUMP_REG(DC_COM_SCRATCH_REGISTER_A);
893 DUMP_REG(DC_COM_SCRATCH_REGISTER_B);
894 DUMP_REG(DC_COM_GPIO_CTRL);
895 DUMP_REG(DC_COM_GPIO_DEBOUNCE_COUNTER);
896 DUMP_REG(DC_COM_CRC_CHECKSUM_LATCHED);
897 DUMP_REG(DC_DISP_DISP_SIGNAL_OPTIONS0);
898 DUMP_REG(DC_DISP_DISP_SIGNAL_OPTIONS1);
899 DUMP_REG(DC_DISP_DISP_WIN_OPTIONS);
900 DUMP_REG(DC_DISP_DISP_MEM_HIGH_PRIORITY);
901 DUMP_REG(DC_DISP_DISP_MEM_HIGH_PRIORITY_TIMER);
902 DUMP_REG(DC_DISP_DISP_TIMING_OPTIONS);
903 DUMP_REG(DC_DISP_REF_TO_SYNC);
904 DUMP_REG(DC_DISP_SYNC_WIDTH);
905 DUMP_REG(DC_DISP_BACK_PORCH);
906 DUMP_REG(DC_DISP_ACTIVE);
907 DUMP_REG(DC_DISP_FRONT_PORCH);
908 DUMP_REG(DC_DISP_H_PULSE0_CONTROL);
909 DUMP_REG(DC_DISP_H_PULSE0_POSITION_A);
910 DUMP_REG(DC_DISP_H_PULSE0_POSITION_B);
911 DUMP_REG(DC_DISP_H_PULSE0_POSITION_C);
912 DUMP_REG(DC_DISP_H_PULSE0_POSITION_D);
913 DUMP_REG(DC_DISP_H_PULSE1_CONTROL);
914 DUMP_REG(DC_DISP_H_PULSE1_POSITION_A);
915 DUMP_REG(DC_DISP_H_PULSE1_POSITION_B);
916 DUMP_REG(DC_DISP_H_PULSE1_POSITION_C);
917 DUMP_REG(DC_DISP_H_PULSE1_POSITION_D);
918 DUMP_REG(DC_DISP_H_PULSE2_CONTROL);
919 DUMP_REG(DC_DISP_H_PULSE2_POSITION_A);
920 DUMP_REG(DC_DISP_H_PULSE2_POSITION_B);
921 DUMP_REG(DC_DISP_H_PULSE2_POSITION_C);
922 DUMP_REG(DC_DISP_H_PULSE2_POSITION_D);
923 DUMP_REG(DC_DISP_V_PULSE0_CONTROL);
924 DUMP_REG(DC_DISP_V_PULSE0_POSITION_A);
925 DUMP_REG(DC_DISP_V_PULSE0_POSITION_B);
926 DUMP_REG(DC_DISP_V_PULSE0_POSITION_C);
927 DUMP_REG(DC_DISP_V_PULSE1_CONTROL);
928 DUMP_REG(DC_DISP_V_PULSE1_POSITION_A);
929 DUMP_REG(DC_DISP_V_PULSE1_POSITION_B);
930 DUMP_REG(DC_DISP_V_PULSE1_POSITION_C);
931 DUMP_REG(DC_DISP_V_PULSE2_CONTROL);
932 DUMP_REG(DC_DISP_V_PULSE2_POSITION_A);
933 DUMP_REG(DC_DISP_V_PULSE3_CONTROL);
934 DUMP_REG(DC_DISP_V_PULSE3_POSITION_A);
935 DUMP_REG(DC_DISP_M0_CONTROL);
936 DUMP_REG(DC_DISP_M1_CONTROL);
937 DUMP_REG(DC_DISP_DI_CONTROL);
938 DUMP_REG(DC_DISP_PP_CONTROL);
939 DUMP_REG(DC_DISP_PP_SELECT_A);
940 DUMP_REG(DC_DISP_PP_SELECT_B);
941 DUMP_REG(DC_DISP_PP_SELECT_C);
942 DUMP_REG(DC_DISP_PP_SELECT_D);
943 DUMP_REG(DC_DISP_DISP_CLOCK_CONTROL);
944 DUMP_REG(DC_DISP_DISP_INTERFACE_CONTROL);
945 DUMP_REG(DC_DISP_DISP_COLOR_CONTROL);
946 DUMP_REG(DC_DISP_SHIFT_CLOCK_OPTIONS);
947 DUMP_REG(DC_DISP_DATA_ENABLE_OPTIONS);
948 DUMP_REG(DC_DISP_SERIAL_INTERFACE_OPTIONS);
949 DUMP_REG(DC_DISP_LCD_SPI_OPTIONS);
950 DUMP_REG(DC_DISP_BORDER_COLOR);
951 DUMP_REG(DC_DISP_COLOR_KEY0_LOWER);
952 DUMP_REG(DC_DISP_COLOR_KEY0_UPPER);
953 DUMP_REG(DC_DISP_COLOR_KEY1_LOWER);
954 DUMP_REG(DC_DISP_COLOR_KEY1_UPPER);
955 DUMP_REG(DC_DISP_CURSOR_FOREGROUND);
956 DUMP_REG(DC_DISP_CURSOR_BACKGROUND);
957 DUMP_REG(DC_DISP_CURSOR_START_ADDR);
958 DUMP_REG(DC_DISP_CURSOR_START_ADDR_NS);
959 DUMP_REG(DC_DISP_CURSOR_POSITION);
960 DUMP_REG(DC_DISP_CURSOR_POSITION_NS);
961 DUMP_REG(DC_DISP_INIT_SEQ_CONTROL);
962 DUMP_REG(DC_DISP_SPI_INIT_SEQ_DATA_A);
963 DUMP_REG(DC_DISP_SPI_INIT_SEQ_DATA_B);
964 DUMP_REG(DC_DISP_SPI_INIT_SEQ_DATA_C);
965 DUMP_REG(DC_DISP_SPI_INIT_SEQ_DATA_D);
966 DUMP_REG(DC_DISP_DC_MCCIF_FIFOCTRL);
967 DUMP_REG(DC_DISP_MCCIF_DISPLAY0A_HYST);
968 DUMP_REG(DC_DISP_MCCIF_DISPLAY0B_HYST);
969 DUMP_REG(DC_DISP_MCCIF_DISPLAY1A_HYST);
970 DUMP_REG(DC_DISP_MCCIF_DISPLAY1B_HYST);
971 DUMP_REG(DC_DISP_DAC_CRT_CTRL);
972 DUMP_REG(DC_DISP_DISP_MISC_CONTROL);
973 DUMP_REG(DC_DISP_SD_CONTROL);
974 DUMP_REG(DC_DISP_SD_CSC_COEFF);
975 DUMP_REG(DC_DISP_SD_LUT(0));
976 DUMP_REG(DC_DISP_SD_LUT(1));
977 DUMP_REG(DC_DISP_SD_LUT(2));
978 DUMP_REG(DC_DISP_SD_LUT(3));
979 DUMP_REG(DC_DISP_SD_LUT(4));
980 DUMP_REG(DC_DISP_SD_LUT(5));
981 DUMP_REG(DC_DISP_SD_LUT(6));
982 DUMP_REG(DC_DISP_SD_LUT(7));
983 DUMP_REG(DC_DISP_SD_LUT(8));
984 DUMP_REG(DC_DISP_SD_FLICKER_CONTROL);
985 DUMP_REG(DC_DISP_DC_PIXEL_COUNT);
986 DUMP_REG(DC_DISP_SD_HISTOGRAM(0));
987 DUMP_REG(DC_DISP_SD_HISTOGRAM(1));
988 DUMP_REG(DC_DISP_SD_HISTOGRAM(2));
989 DUMP_REG(DC_DISP_SD_HISTOGRAM(3));
990 DUMP_REG(DC_DISP_SD_HISTOGRAM(4));
991 DUMP_REG(DC_DISP_SD_HISTOGRAM(5));
992 DUMP_REG(DC_DISP_SD_HISTOGRAM(6));
993 DUMP_REG(DC_DISP_SD_HISTOGRAM(7));
994 DUMP_REG(DC_DISP_SD_BL_TF(0));
995 DUMP_REG(DC_DISP_SD_BL_TF(1));
996 DUMP_REG(DC_DISP_SD_BL_TF(2));
997 DUMP_REG(DC_DISP_SD_BL_TF(3));
998 DUMP_REG(DC_DISP_SD_BL_CONTROL);
999 DUMP_REG(DC_DISP_SD_HW_K_VALUES);
1000 DUMP_REG(DC_DISP_SD_MAN_K_VALUES);
1001 DUMP_REG(DC_WIN_WIN_OPTIONS);
1002 DUMP_REG(DC_WIN_BYTE_SWAP);
1003 DUMP_REG(DC_WIN_BUFFER_CONTROL);
1004 DUMP_REG(DC_WIN_COLOR_DEPTH);
1005 DUMP_REG(DC_WIN_POSITION);
1006 DUMP_REG(DC_WIN_SIZE);
1007 DUMP_REG(DC_WIN_PRESCALED_SIZE);
1008 DUMP_REG(DC_WIN_H_INITIAL_DDA);
1009 DUMP_REG(DC_WIN_V_INITIAL_DDA);
1010 DUMP_REG(DC_WIN_DDA_INC);
1011 DUMP_REG(DC_WIN_LINE_STRIDE);
1012 DUMP_REG(DC_WIN_BUF_STRIDE);
1013 DUMP_REG(DC_WIN_UV_BUF_STRIDE);
1014 DUMP_REG(DC_WIN_BUFFER_ADDR_MODE);
1015 DUMP_REG(DC_WIN_DV_CONTROL);
1016 DUMP_REG(DC_WIN_BLEND_NOKEY);
1017 DUMP_REG(DC_WIN_BLEND_1WIN);
1018 DUMP_REG(DC_WIN_BLEND_2WIN_X);
1019 DUMP_REG(DC_WIN_BLEND_2WIN_Y);
1020 DUMP_REG(DC_WIN_BLEND_3WIN_XY);
1021 DUMP_REG(DC_WIN_HP_FETCH_CONTROL);
1022 DUMP_REG(DC_WINBUF_START_ADDR);
1023 DUMP_REG(DC_WINBUF_START_ADDR_NS);
1024 DUMP_REG(DC_WINBUF_START_ADDR_U);
1025 DUMP_REG(DC_WINBUF_START_ADDR_U_NS);
1026 DUMP_REG(DC_WINBUF_START_ADDR_V);
1027 DUMP_REG(DC_WINBUF_START_ADDR_V_NS);
1028 DUMP_REG(DC_WINBUF_ADDR_H_OFFSET);
1029 DUMP_REG(DC_WINBUF_ADDR_H_OFFSET_NS);
1030 DUMP_REG(DC_WINBUF_ADDR_V_OFFSET);
1031 DUMP_REG(DC_WINBUF_ADDR_V_OFFSET_NS);
1032 DUMP_REG(DC_WINBUF_UFLOW_STATUS);
1033 DUMP_REG(DC_WINBUF_AD_UFLOW_STATUS);
1034 DUMP_REG(DC_WINBUF_BD_UFLOW_STATUS);
1035 DUMP_REG(DC_WINBUF_CD_UFLOW_STATUS);
1036
1037#undef DUMP_REG
1038
1039 return 0;
1040}
1041
1042static struct drm_info_list debugfs_files[] = {
1043 { "regs", tegra_dc_show_regs, 0, NULL },
1044};
1045
1046static int tegra_dc_debugfs_init(struct tegra_dc *dc, struct drm_minor *minor)
1047{
1048 unsigned int i;
1049 char *name;
1050 int err;
1051
1052 name = kasprintf(GFP_KERNEL, "dc.%d", dc->pipe);
1053 dc->debugfs = debugfs_create_dir(name, minor->debugfs_root);
1054 kfree(name);
1055
1056 if (!dc->debugfs)
1057 return -ENOMEM;
1058
1059 dc->debugfs_files = kmemdup(debugfs_files, sizeof(debugfs_files),
1060 GFP_KERNEL);
1061 if (!dc->debugfs_files) {
1062 err = -ENOMEM;
1063 goto remove;
1064 }
1065
1066 for (i = 0; i < ARRAY_SIZE(debugfs_files); i++)
1067 dc->debugfs_files[i].data = dc;
1068
1069 err = drm_debugfs_create_files(dc->debugfs_files,
1070 ARRAY_SIZE(debugfs_files),
1071 dc->debugfs, minor);
1072 if (err < 0)
1073 goto free;
1074
1075 dc->minor = minor;
1076
1077 return 0;
1078
1079free:
1080 kfree(dc->debugfs_files);
1081 dc->debugfs_files = NULL;
1082remove:
1083 debugfs_remove(dc->debugfs);
1084 dc->debugfs = NULL;
1085
1086 return err;
1087}
1088
1089static int tegra_dc_debugfs_exit(struct tegra_dc *dc)
1090{
1091 drm_debugfs_remove_files(dc->debugfs_files, ARRAY_SIZE(debugfs_files),
1092 dc->minor);
1093 dc->minor = NULL;
1094
1095 kfree(dc->debugfs_files);
1096 dc->debugfs_files = NULL;
1097
1098 debugfs_remove(dc->debugfs);
1099 dc->debugfs = NULL;
1100
1101 return 0;
1102}
1103
1104static int tegra_dc_init(struct host1x_client *client)
1105{
1106 struct tegra_drm *tegra = dev_get_drvdata(client->parent);
1107 struct tegra_dc *dc = host1x_client_to_dc(client);
1108 int err;
1109
1110 dc->pipe = tegra->drm->mode_config.num_crtc;
1111
1112 drm_crtc_init(tegra->drm, &dc->base, &tegra_crtc_funcs);
1113 drm_mode_crtc_set_gamma_size(&dc->base, 256);
1114 drm_crtc_helper_add(&dc->base, &tegra_crtc_helper_funcs);
1115
1116 err = tegra_dc_rgb_init(tegra->drm, dc);
1117 if (err < 0 && err != -ENODEV) {
1118 dev_err(dc->dev, "failed to initialize RGB output: %d\n", err);
1119 return err;
1120 }
1121
1122 err = tegra_dc_add_planes(tegra->drm, dc);
1123 if (err < 0)
1124 return err;
1125
1126 if (IS_ENABLED(CONFIG_DEBUG_FS)) {
1127 err = tegra_dc_debugfs_init(dc, tegra->drm->primary);
1128 if (err < 0)
1129 dev_err(dc->dev, "debugfs setup failed: %d\n", err);
1130 }
1131
1132 err = devm_request_irq(dc->dev, dc->irq, tegra_dc_irq, 0,
1133 dev_name(dc->dev), dc);
1134 if (err < 0) {
1135 dev_err(dc->dev, "failed to request IRQ#%u: %d\n", dc->irq,
1136 err);
1137 return err;
1138 }
1139
1140 return 0;
1141}
1142
1143static int tegra_dc_exit(struct host1x_client *client)
1144{
1145 struct tegra_dc *dc = host1x_client_to_dc(client);
1146 int err;
1147
1148 devm_free_irq(dc->dev, dc->irq, dc);
1149
1150 if (IS_ENABLED(CONFIG_DEBUG_FS)) {
1151 err = tegra_dc_debugfs_exit(dc);
1152 if (err < 0)
1153 dev_err(dc->dev, "debugfs cleanup failed: %d\n", err);
1154 }
1155
1156 err = tegra_dc_rgb_exit(dc);
1157 if (err) {
1158 dev_err(dc->dev, "failed to shutdown RGB output: %d\n", err);
1159 return err;
1160 }
1161
1162 return 0;
1163}
1164
1165static const struct host1x_client_ops dc_client_ops = {
1166 .init = tegra_dc_init,
1167 .exit = tegra_dc_exit,
1168};
1169
1170static int tegra_dc_probe(struct platform_device *pdev)
1171{
1172 struct resource *regs;
1173 struct tegra_dc *dc;
1174 int err;
1175
1176 dc = devm_kzalloc(&pdev->dev, sizeof(*dc), GFP_KERNEL);
1177 if (!dc)
1178 return -ENOMEM;
1179
1180 spin_lock_init(&dc->lock);
1181 INIT_LIST_HEAD(&dc->list);
1182 dc->dev = &pdev->dev;
1183
1184 dc->clk = devm_clk_get(&pdev->dev, NULL);
1185 if (IS_ERR(dc->clk)) {
1186 dev_err(&pdev->dev, "failed to get clock\n");
1187 return PTR_ERR(dc->clk);
1188 }
1189
1190 err = clk_prepare_enable(dc->clk);
1191 if (err < 0)
1192 return err;
1193
1194 regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1195 dc->regs = devm_ioremap_resource(&pdev->dev, regs);
1196 if (IS_ERR(dc->regs))
1197 return PTR_ERR(dc->regs);
1198
1199 dc->irq = platform_get_irq(pdev, 0);
1200 if (dc->irq < 0) {
1201 dev_err(&pdev->dev, "failed to get IRQ\n");
1202 return -ENXIO;
1203 }
1204
1205 INIT_LIST_HEAD(&dc->client.list);
1206 dc->client.ops = &dc_client_ops;
1207 dc->client.dev = &pdev->dev;
1208
1209 err = tegra_dc_rgb_probe(dc);
1210 if (err < 0 && err != -ENODEV) {
1211 dev_err(&pdev->dev, "failed to probe RGB output: %d\n", err);
1212 return err;
1213 }
1214
1215 err = host1x_client_register(&dc->client);
1216 if (err < 0) {
1217 dev_err(&pdev->dev, "failed to register host1x client: %d\n",
1218 err);
1219 return err;
1220 }
1221
1222 platform_set_drvdata(pdev, dc);
1223
1224 return 0;
1225}
1226
1227static int tegra_dc_remove(struct platform_device *pdev)
1228{
1229 struct tegra_dc *dc = platform_get_drvdata(pdev);
1230 int err;
1231
1232 err = host1x_client_unregister(&dc->client);
1233 if (err < 0) {
1234 dev_err(&pdev->dev, "failed to unregister host1x client: %d\n",
1235 err);
1236 return err;
1237 }
1238
1239 err = tegra_dc_rgb_remove(dc);
1240 if (err < 0) {
1241 dev_err(&pdev->dev, "failed to remove RGB output: %d\n", err);
1242 return err;
1243 }
1244
1245 clk_disable_unprepare(dc->clk);
1246
1247 return 0;
1248}
1249
1250static struct of_device_id tegra_dc_of_match[] = {
1251 { .compatible = "nvidia,tegra30-dc", },
1252 { .compatible = "nvidia,tegra20-dc", },
1253 { },
1254};
1255
1256struct platform_driver tegra_dc_driver = {
1257 .driver = {
1258 .name = "tegra-dc",
1259 .owner = THIS_MODULE,
1260 .of_match_table = tegra_dc_of_match,
1261 },
1262 .probe = tegra_dc_probe,
1263 .remove = tegra_dc_remove,
1264};
generated by cgit v1.2.2 (git 2.25.0) at 2025-05-29 13:09:26 -0400