2 * Copyright (C) 2012 Avionic Design GmbH
3 * Copyright (C) 2012 NVIDIA CORPORATION. All rights reserved.
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.
10 #include <linux/clk.h>
11 #include <linux/debugfs.h>
12 #include <linux/iommu.h>
13 #include <linux/reset.h>
15 #include <soc/tegra/pmc.h>
21 #include <drm/drm_atomic.h>
22 #include <drm/drm_atomic_helper.h>
23 #include <drm/drm_plane_helper.h>
25 struct tegra_dc_soc_info
{
26 bool supports_border_color
;
27 bool supports_interlacing
;
29 bool supports_block_linear
;
30 unsigned int pitch_align
;
35 struct drm_plane base
;
39 static inline struct tegra_plane
*to_tegra_plane(struct drm_plane
*plane
)
41 return container_of(plane
, struct tegra_plane
, base
);
44 struct tegra_dc_state
{
45 struct drm_crtc_state base
;
54 static inline struct tegra_dc_state
*to_dc_state(struct drm_crtc_state
*state
)
57 return container_of(state
, struct tegra_dc_state
, base
);
62 struct tegra_plane_state
{
63 struct drm_plane_state base
;
65 struct tegra_bo_tiling tiling
;
70 static inline struct tegra_plane_state
*
71 to_tegra_plane_state(struct drm_plane_state
*state
)
74 return container_of(state
, struct tegra_plane_state
, base
);
79 static void tegra_dc_stats_reset(struct tegra_dc_stats
*stats
)
88 * Reads the active copy of a register. This takes the dc->lock spinlock to
89 * prevent races with the VBLANK processing which also needs access to the
90 * active copy of some registers.
92 static u32
tegra_dc_readl_active(struct tegra_dc
*dc
, unsigned long offset
)
97 spin_lock_irqsave(&dc
->lock
, flags
);
99 tegra_dc_writel(dc
, READ_MUX
, DC_CMD_STATE_ACCESS
);
100 value
= tegra_dc_readl(dc
, offset
);
101 tegra_dc_writel(dc
, 0, DC_CMD_STATE_ACCESS
);
103 spin_unlock_irqrestore(&dc
->lock
, flags
);
108 * Double-buffered registers have two copies: ASSEMBLY and ACTIVE. When the
109 * *_ACT_REQ bits are set the ASSEMBLY copy is latched into the ACTIVE copy.
110 * Latching happens mmediately if the display controller is in STOP mode or
111 * on the next frame boundary otherwise.
113 * Triple-buffered registers have three copies: ASSEMBLY, ARM and ACTIVE. The
114 * ASSEMBLY copy is latched into the ARM copy immediately after *_UPDATE bits
115 * are written. When the *_ACT_REQ bits are written, the ARM copy is latched
116 * into the ACTIVE copy, either immediately if the display controller is in
117 * STOP mode, or at the next frame boundary otherwise.
119 void tegra_dc_commit(struct tegra_dc
*dc
)
121 tegra_dc_writel(dc
, GENERAL_ACT_REQ
<< 8, DC_CMD_STATE_CONTROL
);
122 tegra_dc_writel(dc
, GENERAL_ACT_REQ
, DC_CMD_STATE_CONTROL
);
125 static int tegra_dc_format(u32 fourcc
, u32
*format
, u32
*swap
)
127 /* assume no swapping of fetched data */
129 *swap
= BYTE_SWAP_NOSWAP
;
132 case DRM_FORMAT_XBGR8888
:
133 *format
= WIN_COLOR_DEPTH_R8G8B8A8
;
136 case DRM_FORMAT_XRGB8888
:
137 *format
= WIN_COLOR_DEPTH_B8G8R8A8
;
140 case DRM_FORMAT_RGB565
:
141 *format
= WIN_COLOR_DEPTH_B5G6R5
;
144 case DRM_FORMAT_UYVY
:
145 *format
= WIN_COLOR_DEPTH_YCbCr422
;
148 case DRM_FORMAT_YUYV
:
150 *swap
= BYTE_SWAP_SWAP2
;
152 *format
= WIN_COLOR_DEPTH_YCbCr422
;
155 case DRM_FORMAT_YUV420
:
156 *format
= WIN_COLOR_DEPTH_YCbCr420P
;
159 case DRM_FORMAT_YUV422
:
160 *format
= WIN_COLOR_DEPTH_YCbCr422P
;
170 static bool tegra_dc_format_is_yuv(unsigned int format
, bool *planar
)
173 case WIN_COLOR_DEPTH_YCbCr422
:
174 case WIN_COLOR_DEPTH_YUV422
:
180 case WIN_COLOR_DEPTH_YCbCr420P
:
181 case WIN_COLOR_DEPTH_YUV420P
:
182 case WIN_COLOR_DEPTH_YCbCr422P
:
183 case WIN_COLOR_DEPTH_YUV422P
:
184 case WIN_COLOR_DEPTH_YCbCr422R
:
185 case WIN_COLOR_DEPTH_YUV422R
:
186 case WIN_COLOR_DEPTH_YCbCr422RA
:
187 case WIN_COLOR_DEPTH_YUV422RA
:
200 static inline u32
compute_dda_inc(unsigned int in
, unsigned int out
, bool v
,
203 fixed20_12 outf
= dfixed_init(out
);
204 fixed20_12 inf
= dfixed_init(in
);
225 outf
.full
= max_t(u32
, outf
.full
- dfixed_const(1), dfixed_const(1));
226 inf
.full
-= dfixed_const(1);
228 dda_inc
= dfixed_div(inf
, outf
);
229 dda_inc
= min_t(u32
, dda_inc
, dfixed_const(max
));
234 static inline u32
compute_initial_dda(unsigned int in
)
236 fixed20_12 inf
= dfixed_init(in
);
237 return dfixed_frac(inf
);
240 static void tegra_dc_setup_window(struct tegra_dc
*dc
, unsigned int index
,
241 const struct tegra_dc_window
*window
)
243 unsigned h_offset
, v_offset
, h_size
, v_size
, h_dda
, v_dda
, bpp
;
244 unsigned long value
, flags
;
248 * For YUV planar modes, the number of bytes per pixel takes into
249 * account only the luma component and therefore is 1.
251 yuv
= tegra_dc_format_is_yuv(window
->format
, &planar
);
253 bpp
= window
->bits_per_pixel
/ 8;
255 bpp
= planar
? 1 : 2;
257 spin_lock_irqsave(&dc
->lock
, flags
);
259 value
= WINDOW_A_SELECT
<< index
;
260 tegra_dc_writel(dc
, value
, DC_CMD_DISPLAY_WINDOW_HEADER
);
262 tegra_dc_writel(dc
, window
->format
, DC_WIN_COLOR_DEPTH
);
263 tegra_dc_writel(dc
, window
->swap
, DC_WIN_BYTE_SWAP
);
265 value
= V_POSITION(window
->dst
.y
) | H_POSITION(window
->dst
.x
);
266 tegra_dc_writel(dc
, value
, DC_WIN_POSITION
);
268 value
= V_SIZE(window
->dst
.h
) | H_SIZE(window
->dst
.w
);
269 tegra_dc_writel(dc
, value
, DC_WIN_SIZE
);
271 h_offset
= window
->src
.x
* bpp
;
272 v_offset
= window
->src
.y
;
273 h_size
= window
->src
.w
* bpp
;
274 v_size
= window
->src
.h
;
276 value
= V_PRESCALED_SIZE(v_size
) | H_PRESCALED_SIZE(h_size
);
277 tegra_dc_writel(dc
, value
, DC_WIN_PRESCALED_SIZE
);
280 * For DDA computations the number of bytes per pixel for YUV planar
281 * modes needs to take into account all Y, U and V components.
286 h_dda
= compute_dda_inc(window
->src
.w
, window
->dst
.w
, false, bpp
);
287 v_dda
= compute_dda_inc(window
->src
.h
, window
->dst
.h
, true, bpp
);
289 value
= V_DDA_INC(v_dda
) | H_DDA_INC(h_dda
);
290 tegra_dc_writel(dc
, value
, DC_WIN_DDA_INC
);
292 h_dda
= compute_initial_dda(window
->src
.x
);
293 v_dda
= compute_initial_dda(window
->src
.y
);
295 tegra_dc_writel(dc
, h_dda
, DC_WIN_H_INITIAL_DDA
);
296 tegra_dc_writel(dc
, v_dda
, DC_WIN_V_INITIAL_DDA
);
298 tegra_dc_writel(dc
, 0, DC_WIN_UV_BUF_STRIDE
);
299 tegra_dc_writel(dc
, 0, DC_WIN_BUF_STRIDE
);
301 tegra_dc_writel(dc
, window
->base
[0], DC_WINBUF_START_ADDR
);
304 tegra_dc_writel(dc
, window
->base
[1], DC_WINBUF_START_ADDR_U
);
305 tegra_dc_writel(dc
, window
->base
[2], DC_WINBUF_START_ADDR_V
);
306 value
= window
->stride
[1] << 16 | window
->stride
[0];
307 tegra_dc_writel(dc
, value
, DC_WIN_LINE_STRIDE
);
309 tegra_dc_writel(dc
, window
->stride
[0], DC_WIN_LINE_STRIDE
);
312 if (window
->bottom_up
)
313 v_offset
+= window
->src
.h
- 1;
315 tegra_dc_writel(dc
, h_offset
, DC_WINBUF_ADDR_H_OFFSET
);
316 tegra_dc_writel(dc
, v_offset
, DC_WINBUF_ADDR_V_OFFSET
);
318 if (dc
->soc
->supports_block_linear
) {
319 unsigned long height
= window
->tiling
.value
;
321 switch (window
->tiling
.mode
) {
322 case TEGRA_BO_TILING_MODE_PITCH
:
323 value
= DC_WINBUF_SURFACE_KIND_PITCH
;
326 case TEGRA_BO_TILING_MODE_TILED
:
327 value
= DC_WINBUF_SURFACE_KIND_TILED
;
330 case TEGRA_BO_TILING_MODE_BLOCK
:
331 value
= DC_WINBUF_SURFACE_KIND_BLOCK_HEIGHT(height
) |
332 DC_WINBUF_SURFACE_KIND_BLOCK
;
336 tegra_dc_writel(dc
, value
, DC_WINBUF_SURFACE_KIND
);
338 switch (window
->tiling
.mode
) {
339 case TEGRA_BO_TILING_MODE_PITCH
:
340 value
= DC_WIN_BUFFER_ADDR_MODE_LINEAR_UV
|
341 DC_WIN_BUFFER_ADDR_MODE_LINEAR
;
344 case TEGRA_BO_TILING_MODE_TILED
:
345 value
= DC_WIN_BUFFER_ADDR_MODE_TILE_UV
|
346 DC_WIN_BUFFER_ADDR_MODE_TILE
;
349 case TEGRA_BO_TILING_MODE_BLOCK
:
351 * No need to handle this here because ->atomic_check
352 * will already have filtered it out.
357 tegra_dc_writel(dc
, value
, DC_WIN_BUFFER_ADDR_MODE
);
363 /* setup default colorspace conversion coefficients */
364 tegra_dc_writel(dc
, 0x00f0, DC_WIN_CSC_YOF
);
365 tegra_dc_writel(dc
, 0x012a, DC_WIN_CSC_KYRGB
);
366 tegra_dc_writel(dc
, 0x0000, DC_WIN_CSC_KUR
);
367 tegra_dc_writel(dc
, 0x0198, DC_WIN_CSC_KVR
);
368 tegra_dc_writel(dc
, 0x039b, DC_WIN_CSC_KUG
);
369 tegra_dc_writel(dc
, 0x032f, DC_WIN_CSC_KVG
);
370 tegra_dc_writel(dc
, 0x0204, DC_WIN_CSC_KUB
);
371 tegra_dc_writel(dc
, 0x0000, DC_WIN_CSC_KVB
);
374 } else if (window
->bits_per_pixel
< 24) {
375 value
|= COLOR_EXPAND
;
378 if (window
->bottom_up
)
379 value
|= V_DIRECTION
;
381 tegra_dc_writel(dc
, value
, DC_WIN_WIN_OPTIONS
);
384 * Disable blending and assume Window A is the bottom-most window,
385 * Window C is the top-most window and Window B is in the middle.
387 tegra_dc_writel(dc
, 0xffff00, DC_WIN_BLEND_NOKEY
);
388 tegra_dc_writel(dc
, 0xffff00, DC_WIN_BLEND_1WIN
);
392 tegra_dc_writel(dc
, 0x000000, DC_WIN_BLEND_2WIN_X
);
393 tegra_dc_writel(dc
, 0x000000, DC_WIN_BLEND_2WIN_Y
);
394 tegra_dc_writel(dc
, 0x000000, DC_WIN_BLEND_3WIN_XY
);
398 tegra_dc_writel(dc
, 0xffff00, DC_WIN_BLEND_2WIN_X
);
399 tegra_dc_writel(dc
, 0x000000, DC_WIN_BLEND_2WIN_Y
);
400 tegra_dc_writel(dc
, 0x000000, DC_WIN_BLEND_3WIN_XY
);
404 tegra_dc_writel(dc
, 0xffff00, DC_WIN_BLEND_2WIN_X
);
405 tegra_dc_writel(dc
, 0xffff00, DC_WIN_BLEND_2WIN_Y
);
406 tegra_dc_writel(dc
, 0xffff00, DC_WIN_BLEND_3WIN_XY
);
410 spin_unlock_irqrestore(&dc
->lock
, flags
);
413 static void tegra_plane_destroy(struct drm_plane
*plane
)
415 struct tegra_plane
*p
= to_tegra_plane(plane
);
417 drm_plane_cleanup(plane
);
421 static const u32 tegra_primary_plane_formats
[] = {
427 static void tegra_primary_plane_destroy(struct drm_plane
*plane
)
429 tegra_plane_destroy(plane
);
432 static void tegra_plane_reset(struct drm_plane
*plane
)
434 struct tegra_plane_state
*state
;
437 __drm_atomic_helper_plane_destroy_state(plane
, plane
->state
);
442 state
= kzalloc(sizeof(*state
), GFP_KERNEL
);
444 plane
->state
= &state
->base
;
445 plane
->state
->plane
= plane
;
449 static struct drm_plane_state
*tegra_plane_atomic_duplicate_state(struct drm_plane
*plane
)
451 struct tegra_plane_state
*state
= to_tegra_plane_state(plane
->state
);
452 struct tegra_plane_state
*copy
;
454 copy
= kmalloc(sizeof(*copy
), GFP_KERNEL
);
458 __drm_atomic_helper_plane_duplicate_state(plane
, ©
->base
);
459 copy
->tiling
= state
->tiling
;
460 copy
->format
= state
->format
;
461 copy
->swap
= state
->swap
;
466 static void tegra_plane_atomic_destroy_state(struct drm_plane
*plane
,
467 struct drm_plane_state
*state
)
469 __drm_atomic_helper_plane_destroy_state(plane
, state
);
473 static const struct drm_plane_funcs tegra_primary_plane_funcs
= {
474 .update_plane
= drm_atomic_helper_update_plane
,
475 .disable_plane
= drm_atomic_helper_disable_plane
,
476 .destroy
= tegra_primary_plane_destroy
,
477 .reset
= tegra_plane_reset
,
478 .atomic_duplicate_state
= tegra_plane_atomic_duplicate_state
,
479 .atomic_destroy_state
= tegra_plane_atomic_destroy_state
,
482 static int tegra_plane_prepare_fb(struct drm_plane
*plane
,
483 const struct drm_plane_state
*new_state
)
488 static void tegra_plane_cleanup_fb(struct drm_plane
*plane
,
489 const struct drm_plane_state
*old_fb
)
493 static int tegra_plane_state_add(struct tegra_plane
*plane
,
494 struct drm_plane_state
*state
)
496 struct drm_crtc_state
*crtc_state
;
497 struct tegra_dc_state
*tegra
;
499 /* Propagate errors from allocation or locking failures. */
500 crtc_state
= drm_atomic_get_crtc_state(state
->state
, state
->crtc
);
501 if (IS_ERR(crtc_state
))
502 return PTR_ERR(crtc_state
);
504 tegra
= to_dc_state(crtc_state
);
506 tegra
->planes
|= WIN_A_ACT_REQ
<< plane
->index
;
511 static int tegra_plane_atomic_check(struct drm_plane
*plane
,
512 struct drm_plane_state
*state
)
514 struct tegra_plane_state
*plane_state
= to_tegra_plane_state(state
);
515 struct tegra_bo_tiling
*tiling
= &plane_state
->tiling
;
516 struct tegra_plane
*tegra
= to_tegra_plane(plane
);
517 struct tegra_dc
*dc
= to_tegra_dc(state
->crtc
);
520 /* no need for further checks if the plane is being disabled */
524 err
= tegra_dc_format(state
->fb
->pixel_format
, &plane_state
->format
,
529 err
= tegra_fb_get_tiling(state
->fb
, tiling
);
533 if (tiling
->mode
== TEGRA_BO_TILING_MODE_BLOCK
&&
534 !dc
->soc
->supports_block_linear
) {
535 DRM_ERROR("hardware doesn't support block linear mode\n");
540 * Tegra doesn't support different strides for U and V planes so we
541 * error out if the user tries to display a framebuffer with such a
544 if (drm_format_num_planes(state
->fb
->pixel_format
) > 2) {
545 if (state
->fb
->pitches
[2] != state
->fb
->pitches
[1]) {
546 DRM_ERROR("unsupported UV-plane configuration\n");
551 err
= tegra_plane_state_add(tegra
, state
);
558 static void tegra_plane_atomic_update(struct drm_plane
*plane
,
559 struct drm_plane_state
*old_state
)
561 struct tegra_plane_state
*state
= to_tegra_plane_state(plane
->state
);
562 struct tegra_dc
*dc
= to_tegra_dc(plane
->state
->crtc
);
563 struct drm_framebuffer
*fb
= plane
->state
->fb
;
564 struct tegra_plane
*p
= to_tegra_plane(plane
);
565 struct tegra_dc_window window
;
568 /* rien ne va plus */
569 if (!plane
->state
->crtc
|| !plane
->state
->fb
)
572 memset(&window
, 0, sizeof(window
));
573 window
.src
.x
= plane
->state
->src_x
>> 16;
574 window
.src
.y
= plane
->state
->src_y
>> 16;
575 window
.src
.w
= plane
->state
->src_w
>> 16;
576 window
.src
.h
= plane
->state
->src_h
>> 16;
577 window
.dst
.x
= plane
->state
->crtc_x
;
578 window
.dst
.y
= plane
->state
->crtc_y
;
579 window
.dst
.w
= plane
->state
->crtc_w
;
580 window
.dst
.h
= plane
->state
->crtc_h
;
581 window
.bits_per_pixel
= fb
->bits_per_pixel
;
582 window
.bottom_up
= tegra_fb_is_bottom_up(fb
);
584 /* copy from state */
585 window
.tiling
= state
->tiling
;
586 window
.format
= state
->format
;
587 window
.swap
= state
->swap
;
589 for (i
= 0; i
< drm_format_num_planes(fb
->pixel_format
); i
++) {
590 struct tegra_bo
*bo
= tegra_fb_get_plane(fb
, i
);
592 window
.base
[i
] = bo
->paddr
+ fb
->offsets
[i
];
593 window
.stride
[i
] = fb
->pitches
[i
];
596 tegra_dc_setup_window(dc
, p
->index
, &window
);
599 static void tegra_plane_atomic_disable(struct drm_plane
*plane
,
600 struct drm_plane_state
*old_state
)
602 struct tegra_plane
*p
= to_tegra_plane(plane
);
607 /* rien ne va plus */
608 if (!old_state
|| !old_state
->crtc
)
611 dc
= to_tegra_dc(old_state
->crtc
);
613 spin_lock_irqsave(&dc
->lock
, flags
);
615 value
= WINDOW_A_SELECT
<< p
->index
;
616 tegra_dc_writel(dc
, value
, DC_CMD_DISPLAY_WINDOW_HEADER
);
618 value
= tegra_dc_readl(dc
, DC_WIN_WIN_OPTIONS
);
619 value
&= ~WIN_ENABLE
;
620 tegra_dc_writel(dc
, value
, DC_WIN_WIN_OPTIONS
);
622 spin_unlock_irqrestore(&dc
->lock
, flags
);
625 static const struct drm_plane_helper_funcs tegra_primary_plane_helper_funcs
= {
626 .prepare_fb
= tegra_plane_prepare_fb
,
627 .cleanup_fb
= tegra_plane_cleanup_fb
,
628 .atomic_check
= tegra_plane_atomic_check
,
629 .atomic_update
= tegra_plane_atomic_update
,
630 .atomic_disable
= tegra_plane_atomic_disable
,
633 static struct drm_plane
*tegra_dc_primary_plane_create(struct drm_device
*drm
,
637 * Ideally this would use drm_crtc_mask(), but that would require the
638 * CRTC to already be in the mode_config's list of CRTCs. However, it
639 * will only be added to that list in the drm_crtc_init_with_planes()
640 * (in tegra_dc_init()), which in turn requires registration of these
641 * planes. So we have ourselves a nice little chicken and egg problem
644 * We work around this by manually creating the mask from the number
645 * of CRTCs that have been registered, and should therefore always be
646 * the same as drm_crtc_index() after registration.
648 unsigned long possible_crtcs
= 1 << drm
->mode_config
.num_crtc
;
649 struct tegra_plane
*plane
;
650 unsigned int num_formats
;
654 plane
= kzalloc(sizeof(*plane
), GFP_KERNEL
);
656 return ERR_PTR(-ENOMEM
);
658 num_formats
= ARRAY_SIZE(tegra_primary_plane_formats
);
659 formats
= tegra_primary_plane_formats
;
661 err
= drm_universal_plane_init(drm
, &plane
->base
, possible_crtcs
,
662 &tegra_primary_plane_funcs
, formats
,
663 num_formats
, DRM_PLANE_TYPE_PRIMARY
,
670 drm_plane_helper_add(&plane
->base
, &tegra_primary_plane_helper_funcs
);
675 static const u32 tegra_cursor_plane_formats
[] = {
679 static int tegra_cursor_atomic_check(struct drm_plane
*plane
,
680 struct drm_plane_state
*state
)
682 struct tegra_plane
*tegra
= to_tegra_plane(plane
);
685 /* no need for further checks if the plane is being disabled */
689 /* scaling not supported for cursor */
690 if ((state
->src_w
>> 16 != state
->crtc_w
) ||
691 (state
->src_h
>> 16 != state
->crtc_h
))
694 /* only square cursors supported */
695 if (state
->src_w
!= state
->src_h
)
698 if (state
->crtc_w
!= 32 && state
->crtc_w
!= 64 &&
699 state
->crtc_w
!= 128 && state
->crtc_w
!= 256)
702 err
= tegra_plane_state_add(tegra
, state
);
709 static void tegra_cursor_atomic_update(struct drm_plane
*plane
,
710 struct drm_plane_state
*old_state
)
712 struct tegra_bo
*bo
= tegra_fb_get_plane(plane
->state
->fb
, 0);
713 struct tegra_dc
*dc
= to_tegra_dc(plane
->state
->crtc
);
714 struct drm_plane_state
*state
= plane
->state
;
715 u32 value
= CURSOR_CLIP_DISPLAY
;
717 /* rien ne va plus */
718 if (!plane
->state
->crtc
|| !plane
->state
->fb
)
721 switch (state
->crtc_w
) {
723 value
|= CURSOR_SIZE_32x32
;
727 value
|= CURSOR_SIZE_64x64
;
731 value
|= CURSOR_SIZE_128x128
;
735 value
|= CURSOR_SIZE_256x256
;
739 WARN(1, "cursor size %ux%u not supported\n", state
->crtc_w
,
744 value
|= (bo
->paddr
>> 10) & 0x3fffff;
745 tegra_dc_writel(dc
, value
, DC_DISP_CURSOR_START_ADDR
);
747 #ifdef CONFIG_ARCH_DMA_ADDR_T_64BIT
748 value
= (bo
->paddr
>> 32) & 0x3;
749 tegra_dc_writel(dc
, value
, DC_DISP_CURSOR_START_ADDR_HI
);
752 /* enable cursor and set blend mode */
753 value
= tegra_dc_readl(dc
, DC_DISP_DISP_WIN_OPTIONS
);
754 value
|= CURSOR_ENABLE
;
755 tegra_dc_writel(dc
, value
, DC_DISP_DISP_WIN_OPTIONS
);
757 value
= tegra_dc_readl(dc
, DC_DISP_BLEND_CURSOR_CONTROL
);
758 value
&= ~CURSOR_DST_BLEND_MASK
;
759 value
&= ~CURSOR_SRC_BLEND_MASK
;
760 value
|= CURSOR_MODE_NORMAL
;
761 value
|= CURSOR_DST_BLEND_NEG_K1_TIMES_SRC
;
762 value
|= CURSOR_SRC_BLEND_K1_TIMES_SRC
;
763 value
|= CURSOR_ALPHA
;
764 tegra_dc_writel(dc
, value
, DC_DISP_BLEND_CURSOR_CONTROL
);
766 /* position the cursor */
767 value
= (state
->crtc_y
& 0x3fff) << 16 | (state
->crtc_x
& 0x3fff);
768 tegra_dc_writel(dc
, value
, DC_DISP_CURSOR_POSITION
);
771 static void tegra_cursor_atomic_disable(struct drm_plane
*plane
,
772 struct drm_plane_state
*old_state
)
777 /* rien ne va plus */
778 if (!old_state
|| !old_state
->crtc
)
781 dc
= to_tegra_dc(old_state
->crtc
);
783 value
= tegra_dc_readl(dc
, DC_DISP_DISP_WIN_OPTIONS
);
784 value
&= ~CURSOR_ENABLE
;
785 tegra_dc_writel(dc
, value
, DC_DISP_DISP_WIN_OPTIONS
);
788 static const struct drm_plane_funcs tegra_cursor_plane_funcs
= {
789 .update_plane
= drm_atomic_helper_update_plane
,
790 .disable_plane
= drm_atomic_helper_disable_plane
,
791 .destroy
= tegra_plane_destroy
,
792 .reset
= tegra_plane_reset
,
793 .atomic_duplicate_state
= tegra_plane_atomic_duplicate_state
,
794 .atomic_destroy_state
= tegra_plane_atomic_destroy_state
,
797 static const struct drm_plane_helper_funcs tegra_cursor_plane_helper_funcs
= {
798 .prepare_fb
= tegra_plane_prepare_fb
,
799 .cleanup_fb
= tegra_plane_cleanup_fb
,
800 .atomic_check
= tegra_cursor_atomic_check
,
801 .atomic_update
= tegra_cursor_atomic_update
,
802 .atomic_disable
= tegra_cursor_atomic_disable
,
805 static struct drm_plane
*tegra_dc_cursor_plane_create(struct drm_device
*drm
,
808 struct tegra_plane
*plane
;
809 unsigned int num_formats
;
813 plane
= kzalloc(sizeof(*plane
), GFP_KERNEL
);
815 return ERR_PTR(-ENOMEM
);
818 * This index is kind of fake. The cursor isn't a regular plane, but
819 * its update and activation request bits in DC_CMD_STATE_CONTROL do
820 * use the same programming. Setting this fake index here allows the
821 * code in tegra_add_plane_state() to do the right thing without the
822 * need to special-casing the cursor plane.
826 num_formats
= ARRAY_SIZE(tegra_cursor_plane_formats
);
827 formats
= tegra_cursor_plane_formats
;
829 err
= drm_universal_plane_init(drm
, &plane
->base
, 1 << dc
->pipe
,
830 &tegra_cursor_plane_funcs
, formats
,
831 num_formats
, DRM_PLANE_TYPE_CURSOR
,
838 drm_plane_helper_add(&plane
->base
, &tegra_cursor_plane_helper_funcs
);
843 static void tegra_overlay_plane_destroy(struct drm_plane
*plane
)
845 tegra_plane_destroy(plane
);
848 static const struct drm_plane_funcs tegra_overlay_plane_funcs
= {
849 .update_plane
= drm_atomic_helper_update_plane
,
850 .disable_plane
= drm_atomic_helper_disable_plane
,
851 .destroy
= tegra_overlay_plane_destroy
,
852 .reset
= tegra_plane_reset
,
853 .atomic_duplicate_state
= tegra_plane_atomic_duplicate_state
,
854 .atomic_destroy_state
= tegra_plane_atomic_destroy_state
,
857 static const uint32_t tegra_overlay_plane_formats
[] = {
867 static const struct drm_plane_helper_funcs tegra_overlay_plane_helper_funcs
= {
868 .prepare_fb
= tegra_plane_prepare_fb
,
869 .cleanup_fb
= tegra_plane_cleanup_fb
,
870 .atomic_check
= tegra_plane_atomic_check
,
871 .atomic_update
= tegra_plane_atomic_update
,
872 .atomic_disable
= tegra_plane_atomic_disable
,
875 static struct drm_plane
*tegra_dc_overlay_plane_create(struct drm_device
*drm
,
879 struct tegra_plane
*plane
;
880 unsigned int num_formats
;
884 plane
= kzalloc(sizeof(*plane
), GFP_KERNEL
);
886 return ERR_PTR(-ENOMEM
);
888 plane
->index
= index
;
890 num_formats
= ARRAY_SIZE(tegra_overlay_plane_formats
);
891 formats
= tegra_overlay_plane_formats
;
893 err
= drm_universal_plane_init(drm
, &plane
->base
, 1 << dc
->pipe
,
894 &tegra_overlay_plane_funcs
, formats
,
895 num_formats
, DRM_PLANE_TYPE_OVERLAY
,
902 drm_plane_helper_add(&plane
->base
, &tegra_overlay_plane_helper_funcs
);
907 static int tegra_dc_add_planes(struct drm_device
*drm
, struct tegra_dc
*dc
)
909 struct drm_plane
*plane
;
912 for (i
= 0; i
< 2; i
++) {
913 plane
= tegra_dc_overlay_plane_create(drm
, dc
, 1 + i
);
915 return PTR_ERR(plane
);
921 u32
tegra_dc_get_vblank_counter(struct tegra_dc
*dc
)
924 return host1x_syncpt_read(dc
->syncpt
);
926 /* fallback to software emulated VBLANK counter */
927 return drm_crtc_vblank_count(&dc
->base
);
930 void tegra_dc_enable_vblank(struct tegra_dc
*dc
)
932 unsigned long value
, flags
;
934 spin_lock_irqsave(&dc
->lock
, flags
);
936 value
= tegra_dc_readl(dc
, DC_CMD_INT_MASK
);
938 tegra_dc_writel(dc
, value
, DC_CMD_INT_MASK
);
940 spin_unlock_irqrestore(&dc
->lock
, flags
);
943 void tegra_dc_disable_vblank(struct tegra_dc
*dc
)
945 unsigned long value
, flags
;
947 spin_lock_irqsave(&dc
->lock
, flags
);
949 value
= tegra_dc_readl(dc
, DC_CMD_INT_MASK
);
950 value
&= ~VBLANK_INT
;
951 tegra_dc_writel(dc
, value
, DC_CMD_INT_MASK
);
953 spin_unlock_irqrestore(&dc
->lock
, flags
);
956 static void tegra_dc_finish_page_flip(struct tegra_dc
*dc
)
958 struct drm_device
*drm
= dc
->base
.dev
;
959 struct drm_crtc
*crtc
= &dc
->base
;
960 unsigned long flags
, base
;
963 spin_lock_irqsave(&drm
->event_lock
, flags
);
966 spin_unlock_irqrestore(&drm
->event_lock
, flags
);
970 bo
= tegra_fb_get_plane(crtc
->primary
->fb
, 0);
972 spin_lock(&dc
->lock
);
974 /* check if new start address has been latched */
975 tegra_dc_writel(dc
, WINDOW_A_SELECT
, DC_CMD_DISPLAY_WINDOW_HEADER
);
976 tegra_dc_writel(dc
, READ_MUX
, DC_CMD_STATE_ACCESS
);
977 base
= tegra_dc_readl(dc
, DC_WINBUF_START_ADDR
);
978 tegra_dc_writel(dc
, 0, DC_CMD_STATE_ACCESS
);
980 spin_unlock(&dc
->lock
);
982 if (base
== bo
->paddr
+ crtc
->primary
->fb
->offsets
[0]) {
983 drm_crtc_send_vblank_event(crtc
, dc
->event
);
984 drm_crtc_vblank_put(crtc
);
988 spin_unlock_irqrestore(&drm
->event_lock
, flags
);
991 static void tegra_dc_destroy(struct drm_crtc
*crtc
)
993 drm_crtc_cleanup(crtc
);
996 static void tegra_crtc_reset(struct drm_crtc
*crtc
)
998 struct tegra_dc_state
*state
;
1001 __drm_atomic_helper_crtc_destroy_state(crtc
, crtc
->state
);
1006 state
= kzalloc(sizeof(*state
), GFP_KERNEL
);
1008 crtc
->state
= &state
->base
;
1009 crtc
->state
->crtc
= crtc
;
1012 drm_crtc_vblank_reset(crtc
);
1015 static struct drm_crtc_state
*
1016 tegra_crtc_atomic_duplicate_state(struct drm_crtc
*crtc
)
1018 struct tegra_dc_state
*state
= to_dc_state(crtc
->state
);
1019 struct tegra_dc_state
*copy
;
1021 copy
= kmalloc(sizeof(*copy
), GFP_KERNEL
);
1025 __drm_atomic_helper_crtc_duplicate_state(crtc
, ©
->base
);
1026 copy
->clk
= state
->clk
;
1027 copy
->pclk
= state
->pclk
;
1028 copy
->div
= state
->div
;
1029 copy
->planes
= state
->planes
;
1034 static void tegra_crtc_atomic_destroy_state(struct drm_crtc
*crtc
,
1035 struct drm_crtc_state
*state
)
1037 __drm_atomic_helper_crtc_destroy_state(crtc
, state
);
1041 static const struct drm_crtc_funcs tegra_crtc_funcs
= {
1042 .page_flip
= drm_atomic_helper_page_flip
,
1043 .set_config
= drm_atomic_helper_set_config
,
1044 .destroy
= tegra_dc_destroy
,
1045 .reset
= tegra_crtc_reset
,
1046 .atomic_duplicate_state
= tegra_crtc_atomic_duplicate_state
,
1047 .atomic_destroy_state
= tegra_crtc_atomic_destroy_state
,
1050 static int tegra_dc_set_timings(struct tegra_dc
*dc
,
1051 struct drm_display_mode
*mode
)
1053 unsigned int h_ref_to_sync
= 1;
1054 unsigned int v_ref_to_sync
= 1;
1055 unsigned long value
;
1057 tegra_dc_writel(dc
, 0x0, DC_DISP_DISP_TIMING_OPTIONS
);
1059 value
= (v_ref_to_sync
<< 16) | h_ref_to_sync
;
1060 tegra_dc_writel(dc
, value
, DC_DISP_REF_TO_SYNC
);
1062 value
= ((mode
->vsync_end
- mode
->vsync_start
) << 16) |
1063 ((mode
->hsync_end
- mode
->hsync_start
) << 0);
1064 tegra_dc_writel(dc
, value
, DC_DISP_SYNC_WIDTH
);
1066 value
= ((mode
->vtotal
- mode
->vsync_end
) << 16) |
1067 ((mode
->htotal
- mode
->hsync_end
) << 0);
1068 tegra_dc_writel(dc
, value
, DC_DISP_BACK_PORCH
);
1070 value
= ((mode
->vsync_start
- mode
->vdisplay
) << 16) |
1071 ((mode
->hsync_start
- mode
->hdisplay
) << 0);
1072 tegra_dc_writel(dc
, value
, DC_DISP_FRONT_PORCH
);
1074 value
= (mode
->vdisplay
<< 16) | mode
->hdisplay
;
1075 tegra_dc_writel(dc
, value
, DC_DISP_ACTIVE
);
1081 * tegra_dc_state_setup_clock - check clock settings and store them in atomic
1083 * @dc: display controller
1084 * @crtc_state: CRTC atomic state
1085 * @clk: parent clock for display controller
1086 * @pclk: pixel clock
1087 * @div: shift clock divider
1090 * 0 on success or a negative error-code on failure.
1092 int tegra_dc_state_setup_clock(struct tegra_dc
*dc
,
1093 struct drm_crtc_state
*crtc_state
,
1094 struct clk
*clk
, unsigned long pclk
,
1097 struct tegra_dc_state
*state
= to_dc_state(crtc_state
);
1099 if (!clk_has_parent(dc
->clk
, clk
))
1109 static void tegra_dc_commit_state(struct tegra_dc
*dc
,
1110 struct tegra_dc_state
*state
)
1115 err
= clk_set_parent(dc
->clk
, state
->clk
);
1117 dev_err(dc
->dev
, "failed to set parent clock: %d\n", err
);
1120 * Outputs may not want to change the parent clock rate. This is only
1121 * relevant to Tegra20 where only a single display PLL is available.
1122 * Since that PLL would typically be used for HDMI, an internal LVDS
1123 * panel would need to be driven by some other clock such as PLL_P
1124 * which is shared with other peripherals. Changing the clock rate
1125 * should therefore be avoided.
1127 if (state
->pclk
> 0) {
1128 err
= clk_set_rate(state
->clk
, state
->pclk
);
1131 "failed to set clock rate to %lu Hz\n",
1135 DRM_DEBUG_KMS("rate: %lu, div: %u\n", clk_get_rate(dc
->clk
),
1137 DRM_DEBUG_KMS("pclk: %lu\n", state
->pclk
);
1139 value
= SHIFT_CLK_DIVIDER(state
->div
) | PIXEL_CLK_DIVIDER_PCD1
;
1140 tegra_dc_writel(dc
, value
, DC_DISP_DISP_CLOCK_CONTROL
);
1143 static void tegra_dc_stop(struct tegra_dc
*dc
)
1147 /* stop the display controller */
1148 value
= tegra_dc_readl(dc
, DC_CMD_DISPLAY_COMMAND
);
1149 value
&= ~DISP_CTRL_MODE_MASK
;
1150 tegra_dc_writel(dc
, value
, DC_CMD_DISPLAY_COMMAND
);
1152 tegra_dc_commit(dc
);
1155 static bool tegra_dc_idle(struct tegra_dc
*dc
)
1159 value
= tegra_dc_readl_active(dc
, DC_CMD_DISPLAY_COMMAND
);
1161 return (value
& DISP_CTRL_MODE_MASK
) == 0;
1164 static int tegra_dc_wait_idle(struct tegra_dc
*dc
, unsigned long timeout
)
1166 timeout
= jiffies
+ msecs_to_jiffies(timeout
);
1168 while (time_before(jiffies
, timeout
)) {
1169 if (tegra_dc_idle(dc
))
1172 usleep_range(1000, 2000);
1175 dev_dbg(dc
->dev
, "timeout waiting for DC to become idle\n");
1179 static void tegra_crtc_disable(struct drm_crtc
*crtc
)
1181 struct tegra_dc
*dc
= to_tegra_dc(crtc
);
1184 if (!tegra_dc_idle(dc
)) {
1188 * Ignore the return value, there isn't anything useful to do
1189 * in case this fails.
1191 tegra_dc_wait_idle(dc
, 100);
1195 * This should really be part of the RGB encoder driver, but clearing
1196 * these bits has the side-effect of stopping the display controller.
1197 * When that happens no VBLANK interrupts will be raised. At the same
1198 * time the encoder is disabled before the display controller, so the
1199 * above code is always going to timeout waiting for the controller
1202 * Given the close coupling between the RGB encoder and the display
1203 * controller doing it here is still kind of okay. None of the other
1204 * encoder drivers require these bits to be cleared.
1206 * XXX: Perhaps given that the display controller is switched off at
1207 * this point anyway maybe clearing these bits isn't even useful for
1211 value
= tegra_dc_readl(dc
, DC_CMD_DISPLAY_POWER_CONTROL
);
1212 value
&= ~(PW0_ENABLE
| PW1_ENABLE
| PW2_ENABLE
| PW3_ENABLE
|
1213 PW4_ENABLE
| PM0_ENABLE
| PM1_ENABLE
);
1214 tegra_dc_writel(dc
, value
, DC_CMD_DISPLAY_POWER_CONTROL
);
1217 tegra_dc_stats_reset(&dc
->stats
);
1218 drm_crtc_vblank_off(crtc
);
1221 static void tegra_crtc_enable(struct drm_crtc
*crtc
)
1223 struct drm_display_mode
*mode
= &crtc
->state
->adjusted_mode
;
1224 struct tegra_dc_state
*state
= to_dc_state(crtc
->state
);
1225 struct tegra_dc
*dc
= to_tegra_dc(crtc
);
1228 tegra_dc_commit_state(dc
, state
);
1230 /* program display mode */
1231 tegra_dc_set_timings(dc
, mode
);
1233 /* interlacing isn't supported yet, so disable it */
1234 if (dc
->soc
->supports_interlacing
) {
1235 value
= tegra_dc_readl(dc
, DC_DISP_INTERLACE_CONTROL
);
1236 value
&= ~INTERLACE_ENABLE
;
1237 tegra_dc_writel(dc
, value
, DC_DISP_INTERLACE_CONTROL
);
1240 value
= tegra_dc_readl(dc
, DC_CMD_DISPLAY_COMMAND
);
1241 value
&= ~DISP_CTRL_MODE_MASK
;
1242 value
|= DISP_CTRL_MODE_C_DISPLAY
;
1243 tegra_dc_writel(dc
, value
, DC_CMD_DISPLAY_COMMAND
);
1245 value
= tegra_dc_readl(dc
, DC_CMD_DISPLAY_POWER_CONTROL
);
1246 value
|= PW0_ENABLE
| PW1_ENABLE
| PW2_ENABLE
| PW3_ENABLE
|
1247 PW4_ENABLE
| PM0_ENABLE
| PM1_ENABLE
;
1248 tegra_dc_writel(dc
, value
, DC_CMD_DISPLAY_POWER_CONTROL
);
1250 tegra_dc_commit(dc
);
1252 drm_crtc_vblank_on(crtc
);
1255 static int tegra_crtc_atomic_check(struct drm_crtc
*crtc
,
1256 struct drm_crtc_state
*state
)
1261 static void tegra_crtc_atomic_begin(struct drm_crtc
*crtc
,
1262 struct drm_crtc_state
*old_crtc_state
)
1264 struct tegra_dc
*dc
= to_tegra_dc(crtc
);
1266 if (crtc
->state
->event
) {
1267 crtc
->state
->event
->pipe
= drm_crtc_index(crtc
);
1269 WARN_ON(drm_crtc_vblank_get(crtc
) != 0);
1271 dc
->event
= crtc
->state
->event
;
1272 crtc
->state
->event
= NULL
;
1276 static void tegra_crtc_atomic_flush(struct drm_crtc
*crtc
,
1277 struct drm_crtc_state
*old_crtc_state
)
1279 struct tegra_dc_state
*state
= to_dc_state(crtc
->state
);
1280 struct tegra_dc
*dc
= to_tegra_dc(crtc
);
1282 tegra_dc_writel(dc
, state
->planes
<< 8, DC_CMD_STATE_CONTROL
);
1283 tegra_dc_writel(dc
, state
->planes
, DC_CMD_STATE_CONTROL
);
1286 static const struct drm_crtc_helper_funcs tegra_crtc_helper_funcs
= {
1287 .disable
= tegra_crtc_disable
,
1288 .enable
= tegra_crtc_enable
,
1289 .atomic_check
= tegra_crtc_atomic_check
,
1290 .atomic_begin
= tegra_crtc_atomic_begin
,
1291 .atomic_flush
= tegra_crtc_atomic_flush
,
1294 static irqreturn_t
tegra_dc_irq(int irq
, void *data
)
1296 struct tegra_dc
*dc
= data
;
1297 unsigned long status
;
1299 status
= tegra_dc_readl(dc
, DC_CMD_INT_STATUS
);
1300 tegra_dc_writel(dc
, status
, DC_CMD_INT_STATUS
);
1302 if (status
& FRAME_END_INT
) {
1304 dev_dbg(dc->dev, "%s(): frame end\n", __func__);
1309 if (status
& VBLANK_INT
) {
1311 dev_dbg(dc->dev, "%s(): vertical blank\n", __func__);
1313 drm_crtc_handle_vblank(&dc
->base
);
1314 tegra_dc_finish_page_flip(dc
);
1318 if (status
& (WIN_A_UF_INT
| WIN_B_UF_INT
| WIN_C_UF_INT
)) {
1320 dev_dbg(dc->dev, "%s(): underflow\n", __func__);
1322 dc
->stats
.underflow
++;
1325 if (status
& (WIN_A_OF_INT
| WIN_B_OF_INT
| WIN_C_OF_INT
)) {
1327 dev_dbg(dc->dev, "%s(): overflow\n", __func__);
1329 dc
->stats
.overflow
++;
1335 static int tegra_dc_show_regs(struct seq_file
*s
, void *data
)
1337 struct drm_info_node
*node
= s
->private;
1338 struct tegra_dc
*dc
= node
->info_ent
->data
;
1341 drm_modeset_lock_crtc(&dc
->base
, NULL
);
1343 if (!dc
->base
.state
->active
) {
1348 #define DUMP_REG(name) \
1349 seq_printf(s, "%-40s %#05x %08x\n", #name, name, \
1350 tegra_dc_readl(dc, name))
1352 DUMP_REG(DC_CMD_GENERAL_INCR_SYNCPT
);
1353 DUMP_REG(DC_CMD_GENERAL_INCR_SYNCPT_CNTRL
);
1354 DUMP_REG(DC_CMD_GENERAL_INCR_SYNCPT_ERROR
);
1355 DUMP_REG(DC_CMD_WIN_A_INCR_SYNCPT
);
1356 DUMP_REG(DC_CMD_WIN_A_INCR_SYNCPT_CNTRL
);
1357 DUMP_REG(DC_CMD_WIN_A_INCR_SYNCPT_ERROR
);
1358 DUMP_REG(DC_CMD_WIN_B_INCR_SYNCPT
);
1359 DUMP_REG(DC_CMD_WIN_B_INCR_SYNCPT_CNTRL
);
1360 DUMP_REG(DC_CMD_WIN_B_INCR_SYNCPT_ERROR
);
1361 DUMP_REG(DC_CMD_WIN_C_INCR_SYNCPT
);
1362 DUMP_REG(DC_CMD_WIN_C_INCR_SYNCPT_CNTRL
);
1363 DUMP_REG(DC_CMD_WIN_C_INCR_SYNCPT_ERROR
);
1364 DUMP_REG(DC_CMD_CONT_SYNCPT_VSYNC
);
1365 DUMP_REG(DC_CMD_DISPLAY_COMMAND_OPTION0
);
1366 DUMP_REG(DC_CMD_DISPLAY_COMMAND
);
1367 DUMP_REG(DC_CMD_SIGNAL_RAISE
);
1368 DUMP_REG(DC_CMD_DISPLAY_POWER_CONTROL
);
1369 DUMP_REG(DC_CMD_INT_STATUS
);
1370 DUMP_REG(DC_CMD_INT_MASK
);
1371 DUMP_REG(DC_CMD_INT_ENABLE
);
1372 DUMP_REG(DC_CMD_INT_TYPE
);
1373 DUMP_REG(DC_CMD_INT_POLARITY
);
1374 DUMP_REG(DC_CMD_SIGNAL_RAISE1
);
1375 DUMP_REG(DC_CMD_SIGNAL_RAISE2
);
1376 DUMP_REG(DC_CMD_SIGNAL_RAISE3
);
1377 DUMP_REG(DC_CMD_STATE_ACCESS
);
1378 DUMP_REG(DC_CMD_STATE_CONTROL
);
1379 DUMP_REG(DC_CMD_DISPLAY_WINDOW_HEADER
);
1380 DUMP_REG(DC_CMD_REG_ACT_CONTROL
);
1381 DUMP_REG(DC_COM_CRC_CONTROL
);
1382 DUMP_REG(DC_COM_CRC_CHECKSUM
);
1383 DUMP_REG(DC_COM_PIN_OUTPUT_ENABLE(0));
1384 DUMP_REG(DC_COM_PIN_OUTPUT_ENABLE(1));
1385 DUMP_REG(DC_COM_PIN_OUTPUT_ENABLE(2));
1386 DUMP_REG(DC_COM_PIN_OUTPUT_ENABLE(3));
1387 DUMP_REG(DC_COM_PIN_OUTPUT_POLARITY(0));
1388 DUMP_REG(DC_COM_PIN_OUTPUT_POLARITY(1));
1389 DUMP_REG(DC_COM_PIN_OUTPUT_POLARITY(2));
1390 DUMP_REG(DC_COM_PIN_OUTPUT_POLARITY(3));
1391 DUMP_REG(DC_COM_PIN_OUTPUT_DATA(0));
1392 DUMP_REG(DC_COM_PIN_OUTPUT_DATA(1));
1393 DUMP_REG(DC_COM_PIN_OUTPUT_DATA(2));
1394 DUMP_REG(DC_COM_PIN_OUTPUT_DATA(3));
1395 DUMP_REG(DC_COM_PIN_INPUT_ENABLE(0));
1396 DUMP_REG(DC_COM_PIN_INPUT_ENABLE(1));
1397 DUMP_REG(DC_COM_PIN_INPUT_ENABLE(2));
1398 DUMP_REG(DC_COM_PIN_INPUT_ENABLE(3));
1399 DUMP_REG(DC_COM_PIN_INPUT_DATA(0));
1400 DUMP_REG(DC_COM_PIN_INPUT_DATA(1));
1401 DUMP_REG(DC_COM_PIN_OUTPUT_SELECT(0));
1402 DUMP_REG(DC_COM_PIN_OUTPUT_SELECT(1));
1403 DUMP_REG(DC_COM_PIN_OUTPUT_SELECT(2));
1404 DUMP_REG(DC_COM_PIN_OUTPUT_SELECT(3));
1405 DUMP_REG(DC_COM_PIN_OUTPUT_SELECT(4));
1406 DUMP_REG(DC_COM_PIN_OUTPUT_SELECT(5));
1407 DUMP_REG(DC_COM_PIN_OUTPUT_SELECT(6));
1408 DUMP_REG(DC_COM_PIN_MISC_CONTROL
);
1409 DUMP_REG(DC_COM_PIN_PM0_CONTROL
);
1410 DUMP_REG(DC_COM_PIN_PM0_DUTY_CYCLE
);
1411 DUMP_REG(DC_COM_PIN_PM1_CONTROL
);
1412 DUMP_REG(DC_COM_PIN_PM1_DUTY_CYCLE
);
1413 DUMP_REG(DC_COM_SPI_CONTROL
);
1414 DUMP_REG(DC_COM_SPI_START_BYTE
);
1415 DUMP_REG(DC_COM_HSPI_WRITE_DATA_AB
);
1416 DUMP_REG(DC_COM_HSPI_WRITE_DATA_CD
);
1417 DUMP_REG(DC_COM_HSPI_CS_DC
);
1418 DUMP_REG(DC_COM_SCRATCH_REGISTER_A
);
1419 DUMP_REG(DC_COM_SCRATCH_REGISTER_B
);
1420 DUMP_REG(DC_COM_GPIO_CTRL
);
1421 DUMP_REG(DC_COM_GPIO_DEBOUNCE_COUNTER
);
1422 DUMP_REG(DC_COM_CRC_CHECKSUM_LATCHED
);
1423 DUMP_REG(DC_DISP_DISP_SIGNAL_OPTIONS0
);
1424 DUMP_REG(DC_DISP_DISP_SIGNAL_OPTIONS1
);
1425 DUMP_REG(DC_DISP_DISP_WIN_OPTIONS
);
1426 DUMP_REG(DC_DISP_DISP_MEM_HIGH_PRIORITY
);
1427 DUMP_REG(DC_DISP_DISP_MEM_HIGH_PRIORITY_TIMER
);
1428 DUMP_REG(DC_DISP_DISP_TIMING_OPTIONS
);
1429 DUMP_REG(DC_DISP_REF_TO_SYNC
);
1430 DUMP_REG(DC_DISP_SYNC_WIDTH
);
1431 DUMP_REG(DC_DISP_BACK_PORCH
);
1432 DUMP_REG(DC_DISP_ACTIVE
);
1433 DUMP_REG(DC_DISP_FRONT_PORCH
);
1434 DUMP_REG(DC_DISP_H_PULSE0_CONTROL
);
1435 DUMP_REG(DC_DISP_H_PULSE0_POSITION_A
);
1436 DUMP_REG(DC_DISP_H_PULSE0_POSITION_B
);
1437 DUMP_REG(DC_DISP_H_PULSE0_POSITION_C
);
1438 DUMP_REG(DC_DISP_H_PULSE0_POSITION_D
);
1439 DUMP_REG(DC_DISP_H_PULSE1_CONTROL
);
1440 DUMP_REG(DC_DISP_H_PULSE1_POSITION_A
);
1441 DUMP_REG(DC_DISP_H_PULSE1_POSITION_B
);
1442 DUMP_REG(DC_DISP_H_PULSE1_POSITION_C
);
1443 DUMP_REG(DC_DISP_H_PULSE1_POSITION_D
);
1444 DUMP_REG(DC_DISP_H_PULSE2_CONTROL
);
1445 DUMP_REG(DC_DISP_H_PULSE2_POSITION_A
);
1446 DUMP_REG(DC_DISP_H_PULSE2_POSITION_B
);
1447 DUMP_REG(DC_DISP_H_PULSE2_POSITION_C
);
1448 DUMP_REG(DC_DISP_H_PULSE2_POSITION_D
);
1449 DUMP_REG(DC_DISP_V_PULSE0_CONTROL
);
1450 DUMP_REG(DC_DISP_V_PULSE0_POSITION_A
);
1451 DUMP_REG(DC_DISP_V_PULSE0_POSITION_B
);
1452 DUMP_REG(DC_DISP_V_PULSE0_POSITION_C
);
1453 DUMP_REG(DC_DISP_V_PULSE1_CONTROL
);
1454 DUMP_REG(DC_DISP_V_PULSE1_POSITION_A
);
1455 DUMP_REG(DC_DISP_V_PULSE1_POSITION_B
);
1456 DUMP_REG(DC_DISP_V_PULSE1_POSITION_C
);
1457 DUMP_REG(DC_DISP_V_PULSE2_CONTROL
);
1458 DUMP_REG(DC_DISP_V_PULSE2_POSITION_A
);
1459 DUMP_REG(DC_DISP_V_PULSE3_CONTROL
);
1460 DUMP_REG(DC_DISP_V_PULSE3_POSITION_A
);
1461 DUMP_REG(DC_DISP_M0_CONTROL
);
1462 DUMP_REG(DC_DISP_M1_CONTROL
);
1463 DUMP_REG(DC_DISP_DI_CONTROL
);
1464 DUMP_REG(DC_DISP_PP_CONTROL
);
1465 DUMP_REG(DC_DISP_PP_SELECT_A
);
1466 DUMP_REG(DC_DISP_PP_SELECT_B
);
1467 DUMP_REG(DC_DISP_PP_SELECT_C
);
1468 DUMP_REG(DC_DISP_PP_SELECT_D
);
1469 DUMP_REG(DC_DISP_DISP_CLOCK_CONTROL
);
1470 DUMP_REG(DC_DISP_DISP_INTERFACE_CONTROL
);
1471 DUMP_REG(DC_DISP_DISP_COLOR_CONTROL
);
1472 DUMP_REG(DC_DISP_SHIFT_CLOCK_OPTIONS
);
1473 DUMP_REG(DC_DISP_DATA_ENABLE_OPTIONS
);
1474 DUMP_REG(DC_DISP_SERIAL_INTERFACE_OPTIONS
);
1475 DUMP_REG(DC_DISP_LCD_SPI_OPTIONS
);
1476 DUMP_REG(DC_DISP_BORDER_COLOR
);
1477 DUMP_REG(DC_DISP_COLOR_KEY0_LOWER
);
1478 DUMP_REG(DC_DISP_COLOR_KEY0_UPPER
);
1479 DUMP_REG(DC_DISP_COLOR_KEY1_LOWER
);
1480 DUMP_REG(DC_DISP_COLOR_KEY1_UPPER
);
1481 DUMP_REG(DC_DISP_CURSOR_FOREGROUND
);
1482 DUMP_REG(DC_DISP_CURSOR_BACKGROUND
);
1483 DUMP_REG(DC_DISP_CURSOR_START_ADDR
);
1484 DUMP_REG(DC_DISP_CURSOR_START_ADDR_NS
);
1485 DUMP_REG(DC_DISP_CURSOR_POSITION
);
1486 DUMP_REG(DC_DISP_CURSOR_POSITION_NS
);
1487 DUMP_REG(DC_DISP_INIT_SEQ_CONTROL
);
1488 DUMP_REG(DC_DISP_SPI_INIT_SEQ_DATA_A
);
1489 DUMP_REG(DC_DISP_SPI_INIT_SEQ_DATA_B
);
1490 DUMP_REG(DC_DISP_SPI_INIT_SEQ_DATA_C
);
1491 DUMP_REG(DC_DISP_SPI_INIT_SEQ_DATA_D
);
1492 DUMP_REG(DC_DISP_DC_MCCIF_FIFOCTRL
);
1493 DUMP_REG(DC_DISP_MCCIF_DISPLAY0A_HYST
);
1494 DUMP_REG(DC_DISP_MCCIF_DISPLAY0B_HYST
);
1495 DUMP_REG(DC_DISP_MCCIF_DISPLAY1A_HYST
);
1496 DUMP_REG(DC_DISP_MCCIF_DISPLAY1B_HYST
);
1497 DUMP_REG(DC_DISP_DAC_CRT_CTRL
);
1498 DUMP_REG(DC_DISP_DISP_MISC_CONTROL
);
1499 DUMP_REG(DC_DISP_SD_CONTROL
);
1500 DUMP_REG(DC_DISP_SD_CSC_COEFF
);
1501 DUMP_REG(DC_DISP_SD_LUT(0));
1502 DUMP_REG(DC_DISP_SD_LUT(1));
1503 DUMP_REG(DC_DISP_SD_LUT(2));
1504 DUMP_REG(DC_DISP_SD_LUT(3));
1505 DUMP_REG(DC_DISP_SD_LUT(4));
1506 DUMP_REG(DC_DISP_SD_LUT(5));
1507 DUMP_REG(DC_DISP_SD_LUT(6));
1508 DUMP_REG(DC_DISP_SD_LUT(7));
1509 DUMP_REG(DC_DISP_SD_LUT(8));
1510 DUMP_REG(DC_DISP_SD_FLICKER_CONTROL
);
1511 DUMP_REG(DC_DISP_DC_PIXEL_COUNT
);
1512 DUMP_REG(DC_DISP_SD_HISTOGRAM(0));
1513 DUMP_REG(DC_DISP_SD_HISTOGRAM(1));
1514 DUMP_REG(DC_DISP_SD_HISTOGRAM(2));
1515 DUMP_REG(DC_DISP_SD_HISTOGRAM(3));
1516 DUMP_REG(DC_DISP_SD_HISTOGRAM(4));
1517 DUMP_REG(DC_DISP_SD_HISTOGRAM(5));
1518 DUMP_REG(DC_DISP_SD_HISTOGRAM(6));
1519 DUMP_REG(DC_DISP_SD_HISTOGRAM(7));
1520 DUMP_REG(DC_DISP_SD_BL_TF(0));
1521 DUMP_REG(DC_DISP_SD_BL_TF(1));
1522 DUMP_REG(DC_DISP_SD_BL_TF(2));
1523 DUMP_REG(DC_DISP_SD_BL_TF(3));
1524 DUMP_REG(DC_DISP_SD_BL_CONTROL
);
1525 DUMP_REG(DC_DISP_SD_HW_K_VALUES
);
1526 DUMP_REG(DC_DISP_SD_MAN_K_VALUES
);
1527 DUMP_REG(DC_DISP_CURSOR_START_ADDR_HI
);
1528 DUMP_REG(DC_DISP_BLEND_CURSOR_CONTROL
);
1529 DUMP_REG(DC_WIN_WIN_OPTIONS
);
1530 DUMP_REG(DC_WIN_BYTE_SWAP
);
1531 DUMP_REG(DC_WIN_BUFFER_CONTROL
);
1532 DUMP_REG(DC_WIN_COLOR_DEPTH
);
1533 DUMP_REG(DC_WIN_POSITION
);
1534 DUMP_REG(DC_WIN_SIZE
);
1535 DUMP_REG(DC_WIN_PRESCALED_SIZE
);
1536 DUMP_REG(DC_WIN_H_INITIAL_DDA
);
1537 DUMP_REG(DC_WIN_V_INITIAL_DDA
);
1538 DUMP_REG(DC_WIN_DDA_INC
);
1539 DUMP_REG(DC_WIN_LINE_STRIDE
);
1540 DUMP_REG(DC_WIN_BUF_STRIDE
);
1541 DUMP_REG(DC_WIN_UV_BUF_STRIDE
);
1542 DUMP_REG(DC_WIN_BUFFER_ADDR_MODE
);
1543 DUMP_REG(DC_WIN_DV_CONTROL
);
1544 DUMP_REG(DC_WIN_BLEND_NOKEY
);
1545 DUMP_REG(DC_WIN_BLEND_1WIN
);
1546 DUMP_REG(DC_WIN_BLEND_2WIN_X
);
1547 DUMP_REG(DC_WIN_BLEND_2WIN_Y
);
1548 DUMP_REG(DC_WIN_BLEND_3WIN_XY
);
1549 DUMP_REG(DC_WIN_HP_FETCH_CONTROL
);
1550 DUMP_REG(DC_WINBUF_START_ADDR
);
1551 DUMP_REG(DC_WINBUF_START_ADDR_NS
);
1552 DUMP_REG(DC_WINBUF_START_ADDR_U
);
1553 DUMP_REG(DC_WINBUF_START_ADDR_U_NS
);
1554 DUMP_REG(DC_WINBUF_START_ADDR_V
);
1555 DUMP_REG(DC_WINBUF_START_ADDR_V_NS
);
1556 DUMP_REG(DC_WINBUF_ADDR_H_OFFSET
);
1557 DUMP_REG(DC_WINBUF_ADDR_H_OFFSET_NS
);
1558 DUMP_REG(DC_WINBUF_ADDR_V_OFFSET
);
1559 DUMP_REG(DC_WINBUF_ADDR_V_OFFSET_NS
);
1560 DUMP_REG(DC_WINBUF_UFLOW_STATUS
);
1561 DUMP_REG(DC_WINBUF_AD_UFLOW_STATUS
);
1562 DUMP_REG(DC_WINBUF_BD_UFLOW_STATUS
);
1563 DUMP_REG(DC_WINBUF_CD_UFLOW_STATUS
);
1568 drm_modeset_unlock_crtc(&dc
->base
);
1572 static int tegra_dc_show_crc(struct seq_file
*s
, void *data
)
1574 struct drm_info_node
*node
= s
->private;
1575 struct tegra_dc
*dc
= node
->info_ent
->data
;
1579 drm_modeset_lock_crtc(&dc
->base
, NULL
);
1581 if (!dc
->base
.state
->active
) {
1586 value
= DC_COM_CRC_CONTROL_ACTIVE_DATA
| DC_COM_CRC_CONTROL_ENABLE
;
1587 tegra_dc_writel(dc
, value
, DC_COM_CRC_CONTROL
);
1588 tegra_dc_commit(dc
);
1590 drm_crtc_wait_one_vblank(&dc
->base
);
1591 drm_crtc_wait_one_vblank(&dc
->base
);
1593 value
= tegra_dc_readl(dc
, DC_COM_CRC_CHECKSUM
);
1594 seq_printf(s
, "%08x\n", value
);
1596 tegra_dc_writel(dc
, 0, DC_COM_CRC_CONTROL
);
1599 drm_modeset_unlock_crtc(&dc
->base
);
1603 static int tegra_dc_show_stats(struct seq_file
*s
, void *data
)
1605 struct drm_info_node
*node
= s
->private;
1606 struct tegra_dc
*dc
= node
->info_ent
->data
;
1608 seq_printf(s
, "frames: %lu\n", dc
->stats
.frames
);
1609 seq_printf(s
, "vblank: %lu\n", dc
->stats
.vblank
);
1610 seq_printf(s
, "underflow: %lu\n", dc
->stats
.underflow
);
1611 seq_printf(s
, "overflow: %lu\n", dc
->stats
.overflow
);
1616 static struct drm_info_list debugfs_files
[] = {
1617 { "regs", tegra_dc_show_regs
, 0, NULL
},
1618 { "crc", tegra_dc_show_crc
, 0, NULL
},
1619 { "stats", tegra_dc_show_stats
, 0, NULL
},
1622 static int tegra_dc_debugfs_init(struct tegra_dc
*dc
, struct drm_minor
*minor
)
1628 name
= kasprintf(GFP_KERNEL
, "dc.%d", dc
->pipe
);
1629 dc
->debugfs
= debugfs_create_dir(name
, minor
->debugfs_root
);
1635 dc
->debugfs_files
= kmemdup(debugfs_files
, sizeof(debugfs_files
),
1637 if (!dc
->debugfs_files
) {
1642 for (i
= 0; i
< ARRAY_SIZE(debugfs_files
); i
++)
1643 dc
->debugfs_files
[i
].data
= dc
;
1645 err
= drm_debugfs_create_files(dc
->debugfs_files
,
1646 ARRAY_SIZE(debugfs_files
),
1647 dc
->debugfs
, minor
);
1656 kfree(dc
->debugfs_files
);
1657 dc
->debugfs_files
= NULL
;
1659 debugfs_remove(dc
->debugfs
);
1665 static int tegra_dc_debugfs_exit(struct tegra_dc
*dc
)
1667 drm_debugfs_remove_files(dc
->debugfs_files
, ARRAY_SIZE(debugfs_files
),
1671 kfree(dc
->debugfs_files
);
1672 dc
->debugfs_files
= NULL
;
1674 debugfs_remove(dc
->debugfs
);
1680 static int tegra_dc_init(struct host1x_client
*client
)
1682 struct drm_device
*drm
= dev_get_drvdata(client
->parent
);
1683 unsigned long flags
= HOST1X_SYNCPT_CLIENT_MANAGED
;
1684 struct tegra_dc
*dc
= host1x_client_to_dc(client
);
1685 struct tegra_drm
*tegra
= drm
->dev_private
;
1686 struct drm_plane
*primary
= NULL
;
1687 struct drm_plane
*cursor
= NULL
;
1691 dc
->syncpt
= host1x_syncpt_request(dc
->dev
, flags
);
1693 dev_warn(dc
->dev
, "failed to allocate syncpoint\n");
1695 if (tegra
->domain
) {
1696 err
= iommu_attach_device(tegra
->domain
, dc
->dev
);
1698 dev_err(dc
->dev
, "failed to attach to domain: %d\n",
1703 dc
->domain
= tegra
->domain
;
1706 primary
= tegra_dc_primary_plane_create(drm
, dc
);
1707 if (IS_ERR(primary
)) {
1708 err
= PTR_ERR(primary
);
1712 if (dc
->soc
->supports_cursor
) {
1713 cursor
= tegra_dc_cursor_plane_create(drm
, dc
);
1714 if (IS_ERR(cursor
)) {
1715 err
= PTR_ERR(cursor
);
1720 err
= drm_crtc_init_with_planes(drm
, &dc
->base
, primary
, cursor
,
1721 &tegra_crtc_funcs
, NULL
);
1725 drm_mode_crtc_set_gamma_size(&dc
->base
, 256);
1726 drm_crtc_helper_add(&dc
->base
, &tegra_crtc_helper_funcs
);
1729 * Keep track of the minimum pitch alignment across all display
1732 if (dc
->soc
->pitch_align
> tegra
->pitch_align
)
1733 tegra
->pitch_align
= dc
->soc
->pitch_align
;
1735 err
= tegra_dc_rgb_init(drm
, dc
);
1736 if (err
< 0 && err
!= -ENODEV
) {
1737 dev_err(dc
->dev
, "failed to initialize RGB output: %d\n", err
);
1741 err
= tegra_dc_add_planes(drm
, dc
);
1745 if (IS_ENABLED(CONFIG_DEBUG_FS
)) {
1746 err
= tegra_dc_debugfs_init(dc
, drm
->primary
);
1748 dev_err(dc
->dev
, "debugfs setup failed: %d\n", err
);
1751 err
= devm_request_irq(dc
->dev
, dc
->irq
, tegra_dc_irq
, 0,
1752 dev_name(dc
->dev
), dc
);
1754 dev_err(dc
->dev
, "failed to request IRQ#%u: %d\n", dc
->irq
,
1759 /* initialize display controller */
1761 u32 syncpt
= host1x_syncpt_id(dc
->syncpt
);
1763 value
= SYNCPT_CNTRL_NO_STALL
;
1764 tegra_dc_writel(dc
, value
, DC_CMD_GENERAL_INCR_SYNCPT_CNTRL
);
1766 value
= SYNCPT_VSYNC_ENABLE
| syncpt
;
1767 tegra_dc_writel(dc
, value
, DC_CMD_CONT_SYNCPT_VSYNC
);
1770 value
= WIN_A_UF_INT
| WIN_B_UF_INT
| WIN_C_UF_INT
|
1771 WIN_A_OF_INT
| WIN_B_OF_INT
| WIN_C_OF_INT
;
1772 tegra_dc_writel(dc
, value
, DC_CMD_INT_TYPE
);
1774 value
= WIN_A_UF_INT
| WIN_B_UF_INT
| WIN_C_UF_INT
|
1775 WIN_A_OF_INT
| WIN_B_OF_INT
| WIN_C_OF_INT
;
1776 tegra_dc_writel(dc
, value
, DC_CMD_INT_POLARITY
);
1778 /* initialize timer */
1779 value
= CURSOR_THRESHOLD(0) | WINDOW_A_THRESHOLD(0x20) |
1780 WINDOW_B_THRESHOLD(0x20) | WINDOW_C_THRESHOLD(0x20);
1781 tegra_dc_writel(dc
, value
, DC_DISP_DISP_MEM_HIGH_PRIORITY
);
1783 value
= CURSOR_THRESHOLD(0) | WINDOW_A_THRESHOLD(1) |
1784 WINDOW_B_THRESHOLD(1) | WINDOW_C_THRESHOLD(1);
1785 tegra_dc_writel(dc
, value
, DC_DISP_DISP_MEM_HIGH_PRIORITY_TIMER
);
1787 value
= VBLANK_INT
| WIN_A_UF_INT
| WIN_B_UF_INT
| WIN_C_UF_INT
|
1788 WIN_A_OF_INT
| WIN_B_OF_INT
| WIN_C_OF_INT
;
1789 tegra_dc_writel(dc
, value
, DC_CMD_INT_ENABLE
);
1791 value
= WIN_A_UF_INT
| WIN_B_UF_INT
| WIN_C_UF_INT
|
1792 WIN_A_OF_INT
| WIN_B_OF_INT
| WIN_C_OF_INT
;
1793 tegra_dc_writel(dc
, value
, DC_CMD_INT_MASK
);
1795 if (dc
->soc
->supports_border_color
)
1796 tegra_dc_writel(dc
, 0, DC_DISP_BORDER_COLOR
);
1798 tegra_dc_stats_reset(&dc
->stats
);
1804 drm_plane_cleanup(cursor
);
1807 drm_plane_cleanup(primary
);
1809 if (tegra
->domain
) {
1810 iommu_detach_device(tegra
->domain
, dc
->dev
);
1817 static int tegra_dc_exit(struct host1x_client
*client
)
1819 struct tegra_dc
*dc
= host1x_client_to_dc(client
);
1822 devm_free_irq(dc
->dev
, dc
->irq
, dc
);
1824 if (IS_ENABLED(CONFIG_DEBUG_FS
)) {
1825 err
= tegra_dc_debugfs_exit(dc
);
1827 dev_err(dc
->dev
, "debugfs cleanup failed: %d\n", err
);
1830 err
= tegra_dc_rgb_exit(dc
);
1832 dev_err(dc
->dev
, "failed to shutdown RGB output: %d\n", err
);
1837 iommu_detach_device(dc
->domain
, dc
->dev
);
1841 host1x_syncpt_free(dc
->syncpt
);
1846 static const struct host1x_client_ops dc_client_ops
= {
1847 .init
= tegra_dc_init
,
1848 .exit
= tegra_dc_exit
,
1851 static const struct tegra_dc_soc_info tegra20_dc_soc_info
= {
1852 .supports_border_color
= true,
1853 .supports_interlacing
= false,
1854 .supports_cursor
= false,
1855 .supports_block_linear
= false,
1857 .has_powergate
= false,
1860 static const struct tegra_dc_soc_info tegra30_dc_soc_info
= {
1861 .supports_border_color
= true,
1862 .supports_interlacing
= false,
1863 .supports_cursor
= false,
1864 .supports_block_linear
= false,
1866 .has_powergate
= false,
1869 static const struct tegra_dc_soc_info tegra114_dc_soc_info
= {
1870 .supports_border_color
= true,
1871 .supports_interlacing
= false,
1872 .supports_cursor
= false,
1873 .supports_block_linear
= false,
1875 .has_powergate
= true,
1878 static const struct tegra_dc_soc_info tegra124_dc_soc_info
= {
1879 .supports_border_color
= false,
1880 .supports_interlacing
= true,
1881 .supports_cursor
= true,
1882 .supports_block_linear
= true,
1884 .has_powergate
= true,
1887 static const struct tegra_dc_soc_info tegra210_dc_soc_info
= {
1888 .supports_border_color
= false,
1889 .supports_interlacing
= true,
1890 .supports_cursor
= true,
1891 .supports_block_linear
= true,
1893 .has_powergate
= true,
1896 static const struct of_device_id tegra_dc_of_match
[] = {
1898 .compatible
= "nvidia,tegra210-dc",
1899 .data
= &tegra210_dc_soc_info
,
1901 .compatible
= "nvidia,tegra124-dc",
1902 .data
= &tegra124_dc_soc_info
,
1904 .compatible
= "nvidia,tegra114-dc",
1905 .data
= &tegra114_dc_soc_info
,
1907 .compatible
= "nvidia,tegra30-dc",
1908 .data
= &tegra30_dc_soc_info
,
1910 .compatible
= "nvidia,tegra20-dc",
1911 .data
= &tegra20_dc_soc_info
,
1916 MODULE_DEVICE_TABLE(of
, tegra_dc_of_match
);
1918 static int tegra_dc_parse_dt(struct tegra_dc
*dc
)
1920 struct device_node
*np
;
1924 err
= of_property_read_u32(dc
->dev
->of_node
, "nvidia,head", &value
);
1926 dev_err(dc
->dev
, "missing \"nvidia,head\" property\n");
1929 * If the nvidia,head property isn't present, try to find the
1930 * correct head number by looking up the position of this
1931 * display controller's node within the device tree. Assuming
1932 * that the nodes are ordered properly in the DTS file and
1933 * that the translation into a flattened device tree blob
1934 * preserves that ordering this will actually yield the right
1937 * If those assumptions don't hold, this will still work for
1938 * cases where only a single display controller is used.
1940 for_each_matching_node(np
, tegra_dc_of_match
) {
1941 if (np
== dc
->dev
->of_node
) {
1955 static int tegra_dc_probe(struct platform_device
*pdev
)
1957 const struct of_device_id
*id
;
1958 struct resource
*regs
;
1959 struct tegra_dc
*dc
;
1962 dc
= devm_kzalloc(&pdev
->dev
, sizeof(*dc
), GFP_KERNEL
);
1966 id
= of_match_node(tegra_dc_of_match
, pdev
->dev
.of_node
);
1970 spin_lock_init(&dc
->lock
);
1971 INIT_LIST_HEAD(&dc
->list
);
1972 dc
->dev
= &pdev
->dev
;
1975 err
= tegra_dc_parse_dt(dc
);
1979 dc
->clk
= devm_clk_get(&pdev
->dev
, NULL
);
1980 if (IS_ERR(dc
->clk
)) {
1981 dev_err(&pdev
->dev
, "failed to get clock\n");
1982 return PTR_ERR(dc
->clk
);
1985 dc
->rst
= devm_reset_control_get(&pdev
->dev
, "dc");
1986 if (IS_ERR(dc
->rst
)) {
1987 dev_err(&pdev
->dev
, "failed to get reset\n");
1988 return PTR_ERR(dc
->rst
);
1991 if (dc
->soc
->has_powergate
) {
1993 dc
->powergate
= TEGRA_POWERGATE_DIS
;
1995 dc
->powergate
= TEGRA_POWERGATE_DISB
;
1997 err
= tegra_powergate_sequence_power_up(dc
->powergate
, dc
->clk
,
2000 dev_err(&pdev
->dev
, "failed to power partition: %d\n",
2005 err
= clk_prepare_enable(dc
->clk
);
2007 dev_err(&pdev
->dev
, "failed to enable clock: %d\n",
2012 err
= reset_control_deassert(dc
->rst
);
2014 dev_err(&pdev
->dev
, "failed to deassert reset: %d\n",
2020 regs
= platform_get_resource(pdev
, IORESOURCE_MEM
, 0);
2021 dc
->regs
= devm_ioremap_resource(&pdev
->dev
, regs
);
2022 if (IS_ERR(dc
->regs
))
2023 return PTR_ERR(dc
->regs
);
2025 dc
->irq
= platform_get_irq(pdev
, 0);
2027 dev_err(&pdev
->dev
, "failed to get IRQ\n");
2031 INIT_LIST_HEAD(&dc
->client
.list
);
2032 dc
->client
.ops
= &dc_client_ops
;
2033 dc
->client
.dev
= &pdev
->dev
;
2035 err
= tegra_dc_rgb_probe(dc
);
2036 if (err
< 0 && err
!= -ENODEV
) {
2037 dev_err(&pdev
->dev
, "failed to probe RGB output: %d\n", err
);
2041 err
= host1x_client_register(&dc
->client
);
2043 dev_err(&pdev
->dev
, "failed to register host1x client: %d\n",
2048 platform_set_drvdata(pdev
, dc
);
2053 static int tegra_dc_remove(struct platform_device
*pdev
)
2055 struct tegra_dc
*dc
= platform_get_drvdata(pdev
);
2058 err
= host1x_client_unregister(&dc
->client
);
2060 dev_err(&pdev
->dev
, "failed to unregister host1x client: %d\n",
2065 err
= tegra_dc_rgb_remove(dc
);
2067 dev_err(&pdev
->dev
, "failed to remove RGB output: %d\n", err
);
2071 reset_control_assert(dc
->rst
);
2073 if (dc
->soc
->has_powergate
)
2074 tegra_powergate_power_off(dc
->powergate
);
2076 clk_disable_unprepare(dc
->clk
);
2081 struct platform_driver tegra_dc_driver
= {
2084 .of_match_table
= tegra_dc_of_match
,
2086 .probe
= tegra_dc_probe
,
2087 .remove
= tegra_dc_remove
,