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/module.h>
14 #include <linux/platform_device.h>
15 #include <linux/clk/tegra.h>
17 #include "host1x_client.h"
23 struct drm_plane base
;
27 static inline struct tegra_plane
*to_tegra_plane(struct drm_plane
*plane
)
29 return container_of(plane
, struct tegra_plane
, base
);
32 static int tegra_plane_update(struct drm_plane
*plane
, struct drm_crtc
*crtc
,
33 struct drm_framebuffer
*fb
, int crtc_x
,
34 int crtc_y
, unsigned int crtc_w
,
35 unsigned int crtc_h
, uint32_t src_x
,
36 uint32_t src_y
, uint32_t src_w
, uint32_t src_h
)
38 struct tegra_plane
*p
= to_tegra_plane(plane
);
39 struct tegra_dc
*dc
= to_tegra_dc(crtc
);
40 struct tegra_dc_window window
;
43 memset(&window
, 0, sizeof(window
));
44 window
.src
.x
= src_x
>> 16;
45 window
.src
.y
= src_y
>> 16;
46 window
.src
.w
= src_w
>> 16;
47 window
.src
.h
= src_h
>> 16;
48 window
.dst
.x
= crtc_x
;
49 window
.dst
.y
= crtc_y
;
50 window
.dst
.w
= crtc_w
;
51 window
.dst
.h
= crtc_h
;
52 window
.format
= tegra_dc_format(fb
->pixel_format
);
53 window
.bits_per_pixel
= fb
->bits_per_pixel
;
55 for (i
= 0; i
< drm_format_num_planes(fb
->pixel_format
); i
++) {
56 struct tegra_bo
*bo
= tegra_fb_get_plane(fb
, i
);
58 window
.base
[i
] = bo
->paddr
+ fb
->offsets
[i
];
61 * Tegra doesn't support different strides for U and V planes
62 * so we display a warning if the user tries to display a
63 * framebuffer with such a configuration.
66 if (fb
->pitches
[i
] != window
.stride
[1])
67 DRM_ERROR("unsupported UV-plane configuration\n");
69 window
.stride
[i
] = fb
->pitches
[i
];
73 return tegra_dc_setup_window(dc
, p
->index
, &window
);
76 static int tegra_plane_disable(struct drm_plane
*plane
)
78 struct tegra_dc
*dc
= to_tegra_dc(plane
->crtc
);
79 struct tegra_plane
*p
= to_tegra_plane(plane
);
85 value
= WINDOW_A_SELECT
<< p
->index
;
86 tegra_dc_writel(dc
, value
, DC_CMD_DISPLAY_WINDOW_HEADER
);
88 value
= tegra_dc_readl(dc
, DC_WIN_WIN_OPTIONS
);
90 tegra_dc_writel(dc
, value
, DC_WIN_WIN_OPTIONS
);
92 tegra_dc_writel(dc
, WIN_A_UPDATE
<< p
->index
, DC_CMD_STATE_CONTROL
);
93 tegra_dc_writel(dc
, WIN_A_ACT_REQ
<< p
->index
, DC_CMD_STATE_CONTROL
);
98 static void tegra_plane_destroy(struct drm_plane
*plane
)
100 tegra_plane_disable(plane
);
101 drm_plane_cleanup(plane
);
104 static const struct drm_plane_funcs tegra_plane_funcs
= {
105 .update_plane
= tegra_plane_update
,
106 .disable_plane
= tegra_plane_disable
,
107 .destroy
= tegra_plane_destroy
,
110 static const uint32_t plane_formats
[] = {
119 static int tegra_dc_add_planes(struct drm_device
*drm
, struct tegra_dc
*dc
)
124 for (i
= 0; i
< 2; i
++) {
125 struct tegra_plane
*plane
;
127 plane
= devm_kzalloc(drm
->dev
, sizeof(*plane
), GFP_KERNEL
);
131 plane
->index
= 1 + i
;
133 err
= drm_plane_init(drm
, &plane
->base
, 1 << dc
->pipe
,
134 &tegra_plane_funcs
, plane_formats
,
135 ARRAY_SIZE(plane_formats
), false);
143 static int tegra_dc_set_base(struct tegra_dc
*dc
, int x
, int y
,
144 struct drm_framebuffer
*fb
)
146 struct tegra_bo
*bo
= tegra_fb_get_plane(fb
, 0);
149 tegra_dc_writel(dc
, WINDOW_A_SELECT
, DC_CMD_DISPLAY_WINDOW_HEADER
);
151 value
= fb
->offsets
[0] + y
* fb
->pitches
[0] +
152 x
* fb
->bits_per_pixel
/ 8;
154 tegra_dc_writel(dc
, bo
->paddr
+ value
, DC_WINBUF_START_ADDR
);
155 tegra_dc_writel(dc
, fb
->pitches
[0], DC_WIN_LINE_STRIDE
);
157 value
= GENERAL_UPDATE
| WIN_A_UPDATE
;
158 tegra_dc_writel(dc
, value
, DC_CMD_STATE_CONTROL
);
160 value
= GENERAL_ACT_REQ
| WIN_A_ACT_REQ
;
161 tegra_dc_writel(dc
, value
, DC_CMD_STATE_CONTROL
);
166 void tegra_dc_enable_vblank(struct tegra_dc
*dc
)
168 unsigned long value
, flags
;
170 spin_lock_irqsave(&dc
->lock
, flags
);
172 value
= tegra_dc_readl(dc
, DC_CMD_INT_MASK
);
174 tegra_dc_writel(dc
, value
, DC_CMD_INT_MASK
);
176 spin_unlock_irqrestore(&dc
->lock
, flags
);
179 void tegra_dc_disable_vblank(struct tegra_dc
*dc
)
181 unsigned long value
, flags
;
183 spin_lock_irqsave(&dc
->lock
, flags
);
185 value
= tegra_dc_readl(dc
, DC_CMD_INT_MASK
);
186 value
&= ~VBLANK_INT
;
187 tegra_dc_writel(dc
, value
, DC_CMD_INT_MASK
);
189 spin_unlock_irqrestore(&dc
->lock
, flags
);
192 static void tegra_dc_finish_page_flip(struct tegra_dc
*dc
)
194 struct drm_device
*drm
= dc
->base
.dev
;
195 struct drm_crtc
*crtc
= &dc
->base
;
196 unsigned long flags
, base
;
202 bo
= tegra_fb_get_plane(crtc
->fb
, 0);
204 /* check if new start address has been latched */
205 tegra_dc_writel(dc
, READ_MUX
, DC_CMD_STATE_ACCESS
);
206 base
= tegra_dc_readl(dc
, DC_WINBUF_START_ADDR
);
207 tegra_dc_writel(dc
, 0, DC_CMD_STATE_ACCESS
);
209 if (base
== bo
->paddr
+ crtc
->fb
->offsets
[0]) {
210 spin_lock_irqsave(&drm
->event_lock
, flags
);
211 drm_send_vblank_event(drm
, dc
->pipe
, dc
->event
);
212 drm_vblank_put(drm
, dc
->pipe
);
214 spin_unlock_irqrestore(&drm
->event_lock
, flags
);
218 void tegra_dc_cancel_page_flip(struct drm_crtc
*crtc
, struct drm_file
*file
)
220 struct tegra_dc
*dc
= to_tegra_dc(crtc
);
221 struct drm_device
*drm
= crtc
->dev
;
224 spin_lock_irqsave(&drm
->event_lock
, flags
);
226 if (dc
->event
&& dc
->event
->base
.file_priv
== file
) {
227 dc
->event
->base
.destroy(&dc
->event
->base
);
228 drm_vblank_put(drm
, dc
->pipe
);
232 spin_unlock_irqrestore(&drm
->event_lock
, flags
);
235 static int tegra_dc_page_flip(struct drm_crtc
*crtc
, struct drm_framebuffer
*fb
,
236 struct drm_pending_vblank_event
*event
)
238 struct tegra_dc
*dc
= to_tegra_dc(crtc
);
239 struct drm_device
*drm
= crtc
->dev
;
245 event
->pipe
= dc
->pipe
;
247 drm_vblank_get(drm
, dc
->pipe
);
250 tegra_dc_set_base(dc
, 0, 0, fb
);
256 static const struct drm_crtc_funcs tegra_crtc_funcs
= {
257 .page_flip
= tegra_dc_page_flip
,
258 .set_config
= drm_crtc_helper_set_config
,
259 .destroy
= drm_crtc_cleanup
,
262 static void tegra_crtc_disable(struct drm_crtc
*crtc
)
264 struct drm_device
*drm
= crtc
->dev
;
265 struct drm_plane
*plane
;
267 list_for_each_entry(plane
, &drm
->mode_config
.plane_list
, head
) {
268 if (plane
->crtc
== crtc
) {
269 tegra_plane_disable(plane
);
273 drm_framebuffer_unreference(plane
->fb
);
280 static bool tegra_crtc_mode_fixup(struct drm_crtc
*crtc
,
281 const struct drm_display_mode
*mode
,
282 struct drm_display_mode
*adjusted
)
287 static inline u32
compute_dda_inc(unsigned int in
, unsigned int out
, bool v
,
290 fixed20_12 outf
= dfixed_init(out
);
291 fixed20_12 inf
= dfixed_init(in
);
312 outf
.full
= max_t(u32
, outf
.full
- dfixed_const(1), dfixed_const(1));
313 inf
.full
-= dfixed_const(1);
315 dda_inc
= dfixed_div(inf
, outf
);
316 dda_inc
= min_t(u32
, dda_inc
, dfixed_const(max
));
321 static inline u32
compute_initial_dda(unsigned int in
)
323 fixed20_12 inf
= dfixed_init(in
);
324 return dfixed_frac(inf
);
327 static int tegra_dc_set_timings(struct tegra_dc
*dc
,
328 struct drm_display_mode
*mode
)
330 /* TODO: For HDMI compliance, h & v ref_to_sync should be set to 1 */
331 unsigned int h_ref_to_sync
= 0;
332 unsigned int v_ref_to_sync
= 0;
335 tegra_dc_writel(dc
, 0x0, DC_DISP_DISP_TIMING_OPTIONS
);
337 value
= (v_ref_to_sync
<< 16) | h_ref_to_sync
;
338 tegra_dc_writel(dc
, value
, DC_DISP_REF_TO_SYNC
);
340 value
= ((mode
->vsync_end
- mode
->vsync_start
) << 16) |
341 ((mode
->hsync_end
- mode
->hsync_start
) << 0);
342 tegra_dc_writel(dc
, value
, DC_DISP_SYNC_WIDTH
);
344 value
= ((mode
->vtotal
- mode
->vsync_end
) << 16) |
345 ((mode
->htotal
- mode
->hsync_end
) << 0);
346 tegra_dc_writel(dc
, value
, DC_DISP_BACK_PORCH
);
348 value
= ((mode
->vsync_start
- mode
->vdisplay
) << 16) |
349 ((mode
->hsync_start
- mode
->hdisplay
) << 0);
350 tegra_dc_writel(dc
, value
, DC_DISP_FRONT_PORCH
);
352 value
= (mode
->vdisplay
<< 16) | mode
->hdisplay
;
353 tegra_dc_writel(dc
, value
, DC_DISP_ACTIVE
);
358 static int tegra_crtc_setup_clk(struct drm_crtc
*crtc
,
359 struct drm_display_mode
*mode
,
362 unsigned long pclk
= mode
->clock
* 1000, rate
;
363 struct tegra_dc
*dc
= to_tegra_dc(crtc
);
364 struct tegra_output
*output
= NULL
;
365 struct drm_encoder
*encoder
;
368 list_for_each_entry(encoder
, &crtc
->dev
->mode_config
.encoder_list
, head
)
369 if (encoder
->crtc
== crtc
) {
370 output
= encoder_to_output(encoder
);
378 * This assumes that the display controller will divide its parent
379 * clock by 2 to generate the pixel clock.
381 err
= tegra_output_setup_clock(output
, dc
->clk
, pclk
* 2);
383 dev_err(dc
->dev
, "failed to setup clock: %ld\n", err
);
387 rate
= clk_get_rate(dc
->clk
);
388 *div
= (rate
* 2 / pclk
) - 2;
390 DRM_DEBUG_KMS("rate: %lu, div: %lu\n", rate
, *div
);
395 static bool tegra_dc_format_is_yuv(unsigned int format
, bool *planar
)
398 case WIN_COLOR_DEPTH_YCbCr422
:
399 case WIN_COLOR_DEPTH_YUV422
:
405 case WIN_COLOR_DEPTH_YCbCr420P
:
406 case WIN_COLOR_DEPTH_YUV420P
:
407 case WIN_COLOR_DEPTH_YCbCr422P
:
408 case WIN_COLOR_DEPTH_YUV422P
:
409 case WIN_COLOR_DEPTH_YCbCr422R
:
410 case WIN_COLOR_DEPTH_YUV422R
:
411 case WIN_COLOR_DEPTH_YCbCr422RA
:
412 case WIN_COLOR_DEPTH_YUV422RA
:
422 int tegra_dc_setup_window(struct tegra_dc
*dc
, unsigned int index
,
423 const struct tegra_dc_window
*window
)
425 unsigned h_offset
, v_offset
, h_size
, v_size
, h_dda
, v_dda
, bpp
;
430 * For YUV planar modes, the number of bytes per pixel takes into
431 * account only the luma component and therefore is 1.
433 yuv
= tegra_dc_format_is_yuv(window
->format
, &planar
);
435 bpp
= window
->bits_per_pixel
/ 8;
437 bpp
= planar
? 1 : 2;
439 value
= WINDOW_A_SELECT
<< index
;
440 tegra_dc_writel(dc
, value
, DC_CMD_DISPLAY_WINDOW_HEADER
);
442 tegra_dc_writel(dc
, window
->format
, DC_WIN_COLOR_DEPTH
);
443 tegra_dc_writel(dc
, 0, DC_WIN_BYTE_SWAP
);
445 value
= V_POSITION(window
->dst
.y
) | H_POSITION(window
->dst
.x
);
446 tegra_dc_writel(dc
, value
, DC_WIN_POSITION
);
448 value
= V_SIZE(window
->dst
.h
) | H_SIZE(window
->dst
.w
);
449 tegra_dc_writel(dc
, value
, DC_WIN_SIZE
);
451 h_offset
= window
->src
.x
* bpp
;
452 v_offset
= window
->src
.y
;
453 h_size
= window
->src
.w
* bpp
;
454 v_size
= window
->src
.h
;
456 value
= V_PRESCALED_SIZE(v_size
) | H_PRESCALED_SIZE(h_size
);
457 tegra_dc_writel(dc
, value
, DC_WIN_PRESCALED_SIZE
);
460 * For DDA computations the number of bytes per pixel for YUV planar
461 * modes needs to take into account all Y, U and V components.
466 h_dda
= compute_dda_inc(window
->src
.w
, window
->dst
.w
, false, bpp
);
467 v_dda
= compute_dda_inc(window
->src
.h
, window
->dst
.h
, true, bpp
);
469 value
= V_DDA_INC(v_dda
) | H_DDA_INC(h_dda
);
470 tegra_dc_writel(dc
, value
, DC_WIN_DDA_INC
);
472 h_dda
= compute_initial_dda(window
->src
.x
);
473 v_dda
= compute_initial_dda(window
->src
.y
);
475 tegra_dc_writel(dc
, h_dda
, DC_WIN_H_INITIAL_DDA
);
476 tegra_dc_writel(dc
, v_dda
, DC_WIN_V_INITIAL_DDA
);
478 tegra_dc_writel(dc
, 0, DC_WIN_UV_BUF_STRIDE
);
479 tegra_dc_writel(dc
, 0, DC_WIN_BUF_STRIDE
);
481 tegra_dc_writel(dc
, window
->base
[0], DC_WINBUF_START_ADDR
);
484 tegra_dc_writel(dc
, window
->base
[1], DC_WINBUF_START_ADDR_U
);
485 tegra_dc_writel(dc
, window
->base
[2], DC_WINBUF_START_ADDR_V
);
486 value
= window
->stride
[1] << 16 | window
->stride
[0];
487 tegra_dc_writel(dc
, value
, DC_WIN_LINE_STRIDE
);
489 tegra_dc_writel(dc
, window
->stride
[0], DC_WIN_LINE_STRIDE
);
492 tegra_dc_writel(dc
, h_offset
, DC_WINBUF_ADDR_H_OFFSET
);
493 tegra_dc_writel(dc
, v_offset
, DC_WINBUF_ADDR_V_OFFSET
);
498 /* setup default colorspace conversion coefficients */
499 tegra_dc_writel(dc
, 0x00f0, DC_WIN_CSC_YOF
);
500 tegra_dc_writel(dc
, 0x012a, DC_WIN_CSC_KYRGB
);
501 tegra_dc_writel(dc
, 0x0000, DC_WIN_CSC_KUR
);
502 tegra_dc_writel(dc
, 0x0198, DC_WIN_CSC_KVR
);
503 tegra_dc_writel(dc
, 0x039b, DC_WIN_CSC_KUG
);
504 tegra_dc_writel(dc
, 0x032f, DC_WIN_CSC_KVG
);
505 tegra_dc_writel(dc
, 0x0204, DC_WIN_CSC_KUB
);
506 tegra_dc_writel(dc
, 0x0000, DC_WIN_CSC_KVB
);
509 } else if (window
->bits_per_pixel
< 24) {
510 value
|= COLOR_EXPAND
;
513 tegra_dc_writel(dc
, value
, DC_WIN_WIN_OPTIONS
);
516 * Disable blending and assume Window A is the bottom-most window,
517 * Window C is the top-most window and Window B is in the middle.
519 tegra_dc_writel(dc
, 0xffff00, DC_WIN_BLEND_NOKEY
);
520 tegra_dc_writel(dc
, 0xffff00, DC_WIN_BLEND_1WIN
);
524 tegra_dc_writel(dc
, 0x000000, DC_WIN_BLEND_2WIN_X
);
525 tegra_dc_writel(dc
, 0x000000, DC_WIN_BLEND_2WIN_Y
);
526 tegra_dc_writel(dc
, 0x000000, DC_WIN_BLEND_3WIN_XY
);
530 tegra_dc_writel(dc
, 0xffff00, DC_WIN_BLEND_2WIN_X
);
531 tegra_dc_writel(dc
, 0x000000, DC_WIN_BLEND_2WIN_Y
);
532 tegra_dc_writel(dc
, 0x000000, DC_WIN_BLEND_3WIN_XY
);
536 tegra_dc_writel(dc
, 0xffff00, DC_WIN_BLEND_2WIN_X
);
537 tegra_dc_writel(dc
, 0xffff00, DC_WIN_BLEND_2WIN_Y
);
538 tegra_dc_writel(dc
, 0xffff00, DC_WIN_BLEND_3WIN_XY
);
542 tegra_dc_writel(dc
, WIN_A_UPDATE
<< index
, DC_CMD_STATE_CONTROL
);
543 tegra_dc_writel(dc
, WIN_A_ACT_REQ
<< index
, DC_CMD_STATE_CONTROL
);
548 unsigned int tegra_dc_format(uint32_t format
)
551 case DRM_FORMAT_XBGR8888
:
552 return WIN_COLOR_DEPTH_R8G8B8A8
;
554 case DRM_FORMAT_XRGB8888
:
555 return WIN_COLOR_DEPTH_B8G8R8A8
;
557 case DRM_FORMAT_RGB565
:
558 return WIN_COLOR_DEPTH_B5G6R5
;
560 case DRM_FORMAT_UYVY
:
561 return WIN_COLOR_DEPTH_YCbCr422
;
563 case DRM_FORMAT_YUV420
:
564 return WIN_COLOR_DEPTH_YCbCr420P
;
566 case DRM_FORMAT_YUV422
:
567 return WIN_COLOR_DEPTH_YCbCr422P
;
573 WARN(1, "unsupported pixel format %u, using default\n", format
);
574 return WIN_COLOR_DEPTH_B8G8R8A8
;
577 static int tegra_crtc_mode_set(struct drm_crtc
*crtc
,
578 struct drm_display_mode
*mode
,
579 struct drm_display_mode
*adjusted
,
580 int x
, int y
, struct drm_framebuffer
*old_fb
)
582 struct tegra_bo
*bo
= tegra_fb_get_plane(crtc
->fb
, 0);
583 struct tegra_dc
*dc
= to_tegra_dc(crtc
);
584 struct tegra_dc_window window
;
585 unsigned long div
, value
;
588 drm_vblank_pre_modeset(crtc
->dev
, dc
->pipe
);
590 err
= tegra_crtc_setup_clk(crtc
, mode
, &div
);
592 dev_err(dc
->dev
, "failed to setup clock for CRTC: %d\n", err
);
596 /* program display mode */
597 tegra_dc_set_timings(dc
, mode
);
599 value
= DE_SELECT_ACTIVE
| DE_CONTROL_NORMAL
;
600 tegra_dc_writel(dc
, value
, DC_DISP_DATA_ENABLE_OPTIONS
);
602 value
= tegra_dc_readl(dc
, DC_COM_PIN_OUTPUT_POLARITY(1));
603 value
&= ~LVS_OUTPUT_POLARITY_LOW
;
604 value
&= ~LHS_OUTPUT_POLARITY_LOW
;
605 tegra_dc_writel(dc
, value
, DC_COM_PIN_OUTPUT_POLARITY(1));
607 value
= DISP_DATA_FORMAT_DF1P1C
| DISP_ALIGNMENT_MSB
|
609 tegra_dc_writel(dc
, value
, DC_DISP_DISP_INTERFACE_CONTROL
);
611 tegra_dc_writel(dc
, 0x00010001, DC_DISP_SHIFT_CLOCK_OPTIONS
);
613 value
= SHIFT_CLK_DIVIDER(div
) | PIXEL_CLK_DIVIDER_PCD1
;
614 tegra_dc_writel(dc
, value
, DC_DISP_DISP_CLOCK_CONTROL
);
616 /* setup window parameters */
617 memset(&window
, 0, sizeof(window
));
620 window
.src
.w
= mode
->hdisplay
;
621 window
.src
.h
= mode
->vdisplay
;
624 window
.dst
.w
= mode
->hdisplay
;
625 window
.dst
.h
= mode
->vdisplay
;
626 window
.format
= tegra_dc_format(crtc
->fb
->pixel_format
);
627 window
.bits_per_pixel
= crtc
->fb
->bits_per_pixel
;
628 window
.stride
[0] = crtc
->fb
->pitches
[0];
629 window
.base
[0] = bo
->paddr
;
631 err
= tegra_dc_setup_window(dc
, 0, &window
);
633 dev_err(dc
->dev
, "failed to enable root plane\n");
638 static int tegra_crtc_mode_set_base(struct drm_crtc
*crtc
, int x
, int y
,
639 struct drm_framebuffer
*old_fb
)
641 struct tegra_dc
*dc
= to_tegra_dc(crtc
);
643 return tegra_dc_set_base(dc
, x
, y
, crtc
->fb
);
646 static void tegra_crtc_prepare(struct drm_crtc
*crtc
)
648 struct tegra_dc
*dc
= to_tegra_dc(crtc
);
652 /* hardware initialization */
653 tegra_periph_reset_deassert(dc
->clk
);
654 usleep_range(10000, 20000);
657 syncpt
= SYNCPT_VBLANK1
;
659 syncpt
= SYNCPT_VBLANK0
;
661 /* initialize display controller */
662 tegra_dc_writel(dc
, 0x00000100, DC_CMD_GENERAL_INCR_SYNCPT_CNTRL
);
663 tegra_dc_writel(dc
, 0x100 | syncpt
, DC_CMD_CONT_SYNCPT_VSYNC
);
665 value
= WIN_A_UF_INT
| WIN_B_UF_INT
| WIN_C_UF_INT
| WIN_A_OF_INT
;
666 tegra_dc_writel(dc
, value
, DC_CMD_INT_TYPE
);
668 value
= WIN_A_UF_INT
| WIN_B_UF_INT
| WIN_C_UF_INT
|
669 WIN_A_OF_INT
| WIN_B_OF_INT
| WIN_C_OF_INT
;
670 tegra_dc_writel(dc
, value
, DC_CMD_INT_POLARITY
);
672 value
= PW0_ENABLE
| PW1_ENABLE
| PW2_ENABLE
| PW3_ENABLE
|
673 PW4_ENABLE
| PM0_ENABLE
| PM1_ENABLE
;
674 tegra_dc_writel(dc
, value
, DC_CMD_DISPLAY_POWER_CONTROL
);
676 value
= tegra_dc_readl(dc
, DC_CMD_DISPLAY_COMMAND
);
677 value
|= DISP_CTRL_MODE_C_DISPLAY
;
678 tegra_dc_writel(dc
, value
, DC_CMD_DISPLAY_COMMAND
);
680 /* initialize timer */
681 value
= CURSOR_THRESHOLD(0) | WINDOW_A_THRESHOLD(0x20) |
682 WINDOW_B_THRESHOLD(0x20) | WINDOW_C_THRESHOLD(0x20);
683 tegra_dc_writel(dc
, value
, DC_DISP_DISP_MEM_HIGH_PRIORITY
);
685 value
= CURSOR_THRESHOLD(0) | WINDOW_A_THRESHOLD(1) |
686 WINDOW_B_THRESHOLD(1) | WINDOW_C_THRESHOLD(1);
687 tegra_dc_writel(dc
, value
, DC_DISP_DISP_MEM_HIGH_PRIORITY_TIMER
);
689 value
= VBLANK_INT
| WIN_A_UF_INT
| WIN_B_UF_INT
| WIN_C_UF_INT
;
690 tegra_dc_writel(dc
, value
, DC_CMD_INT_ENABLE
);
692 value
= WIN_A_UF_INT
| WIN_B_UF_INT
| WIN_C_UF_INT
;
693 tegra_dc_writel(dc
, value
, DC_CMD_INT_MASK
);
696 static void tegra_crtc_commit(struct drm_crtc
*crtc
)
698 struct tegra_dc
*dc
= to_tegra_dc(crtc
);
701 value
= GENERAL_UPDATE
| WIN_A_UPDATE
;
702 tegra_dc_writel(dc
, value
, DC_CMD_STATE_CONTROL
);
704 value
= GENERAL_ACT_REQ
| WIN_A_ACT_REQ
;
705 tegra_dc_writel(dc
, value
, DC_CMD_STATE_CONTROL
);
707 drm_vblank_post_modeset(crtc
->dev
, dc
->pipe
);
710 static void tegra_crtc_load_lut(struct drm_crtc
*crtc
)
714 static const struct drm_crtc_helper_funcs tegra_crtc_helper_funcs
= {
715 .disable
= tegra_crtc_disable
,
716 .mode_fixup
= tegra_crtc_mode_fixup
,
717 .mode_set
= tegra_crtc_mode_set
,
718 .mode_set_base
= tegra_crtc_mode_set_base
,
719 .prepare
= tegra_crtc_prepare
,
720 .commit
= tegra_crtc_commit
,
721 .load_lut
= tegra_crtc_load_lut
,
724 static irqreturn_t
tegra_dc_irq(int irq
, void *data
)
726 struct tegra_dc
*dc
= data
;
727 unsigned long status
;
729 status
= tegra_dc_readl(dc
, DC_CMD_INT_STATUS
);
730 tegra_dc_writel(dc
, status
, DC_CMD_INT_STATUS
);
732 if (status
& FRAME_END_INT
) {
734 dev_dbg(dc->dev, "%s(): frame end\n", __func__);
738 if (status
& VBLANK_INT
) {
740 dev_dbg(dc->dev, "%s(): vertical blank\n", __func__);
742 drm_handle_vblank(dc
->base
.dev
, dc
->pipe
);
743 tegra_dc_finish_page_flip(dc
);
746 if (status
& (WIN_A_UF_INT
| WIN_B_UF_INT
| WIN_C_UF_INT
)) {
748 dev_dbg(dc->dev, "%s(): underflow\n", __func__);
755 static int tegra_dc_show_regs(struct seq_file
*s
, void *data
)
757 struct drm_info_node
*node
= s
->private;
758 struct tegra_dc
*dc
= node
->info_ent
->data
;
760 #define DUMP_REG(name) \
761 seq_printf(s, "%-40s %#05x %08lx\n", #name, name, \
762 tegra_dc_readl(dc, name))
764 DUMP_REG(DC_CMD_GENERAL_INCR_SYNCPT
);
765 DUMP_REG(DC_CMD_GENERAL_INCR_SYNCPT_CNTRL
);
766 DUMP_REG(DC_CMD_GENERAL_INCR_SYNCPT_ERROR
);
767 DUMP_REG(DC_CMD_WIN_A_INCR_SYNCPT
);
768 DUMP_REG(DC_CMD_WIN_A_INCR_SYNCPT_CNTRL
);
769 DUMP_REG(DC_CMD_WIN_A_INCR_SYNCPT_ERROR
);
770 DUMP_REG(DC_CMD_WIN_B_INCR_SYNCPT
);
771 DUMP_REG(DC_CMD_WIN_B_INCR_SYNCPT_CNTRL
);
772 DUMP_REG(DC_CMD_WIN_B_INCR_SYNCPT_ERROR
);
773 DUMP_REG(DC_CMD_WIN_C_INCR_SYNCPT
);
774 DUMP_REG(DC_CMD_WIN_C_INCR_SYNCPT_CNTRL
);
775 DUMP_REG(DC_CMD_WIN_C_INCR_SYNCPT_ERROR
);
776 DUMP_REG(DC_CMD_CONT_SYNCPT_VSYNC
);
777 DUMP_REG(DC_CMD_DISPLAY_COMMAND_OPTION0
);
778 DUMP_REG(DC_CMD_DISPLAY_COMMAND
);
779 DUMP_REG(DC_CMD_SIGNAL_RAISE
);
780 DUMP_REG(DC_CMD_DISPLAY_POWER_CONTROL
);
781 DUMP_REG(DC_CMD_INT_STATUS
);
782 DUMP_REG(DC_CMD_INT_MASK
);
783 DUMP_REG(DC_CMD_INT_ENABLE
);
784 DUMP_REG(DC_CMD_INT_TYPE
);
785 DUMP_REG(DC_CMD_INT_POLARITY
);
786 DUMP_REG(DC_CMD_SIGNAL_RAISE1
);
787 DUMP_REG(DC_CMD_SIGNAL_RAISE2
);
788 DUMP_REG(DC_CMD_SIGNAL_RAISE3
);
789 DUMP_REG(DC_CMD_STATE_ACCESS
);
790 DUMP_REG(DC_CMD_STATE_CONTROL
);
791 DUMP_REG(DC_CMD_DISPLAY_WINDOW_HEADER
);
792 DUMP_REG(DC_CMD_REG_ACT_CONTROL
);
793 DUMP_REG(DC_COM_CRC_CONTROL
);
794 DUMP_REG(DC_COM_CRC_CHECKSUM
);
795 DUMP_REG(DC_COM_PIN_OUTPUT_ENABLE(0));
796 DUMP_REG(DC_COM_PIN_OUTPUT_ENABLE(1));
797 DUMP_REG(DC_COM_PIN_OUTPUT_ENABLE(2));
798 DUMP_REG(DC_COM_PIN_OUTPUT_ENABLE(3));
799 DUMP_REG(DC_COM_PIN_OUTPUT_POLARITY(0));
800 DUMP_REG(DC_COM_PIN_OUTPUT_POLARITY(1));
801 DUMP_REG(DC_COM_PIN_OUTPUT_POLARITY(2));
802 DUMP_REG(DC_COM_PIN_OUTPUT_POLARITY(3));
803 DUMP_REG(DC_COM_PIN_OUTPUT_DATA(0));
804 DUMP_REG(DC_COM_PIN_OUTPUT_DATA(1));
805 DUMP_REG(DC_COM_PIN_OUTPUT_DATA(2));
806 DUMP_REG(DC_COM_PIN_OUTPUT_DATA(3));
807 DUMP_REG(DC_COM_PIN_INPUT_ENABLE(0));
808 DUMP_REG(DC_COM_PIN_INPUT_ENABLE(1));
809 DUMP_REG(DC_COM_PIN_INPUT_ENABLE(2));
810 DUMP_REG(DC_COM_PIN_INPUT_ENABLE(3));
811 DUMP_REG(DC_COM_PIN_INPUT_DATA(0));
812 DUMP_REG(DC_COM_PIN_INPUT_DATA(1));
813 DUMP_REG(DC_COM_PIN_OUTPUT_SELECT(0));
814 DUMP_REG(DC_COM_PIN_OUTPUT_SELECT(1));
815 DUMP_REG(DC_COM_PIN_OUTPUT_SELECT(2));
816 DUMP_REG(DC_COM_PIN_OUTPUT_SELECT(3));
817 DUMP_REG(DC_COM_PIN_OUTPUT_SELECT(4));
818 DUMP_REG(DC_COM_PIN_OUTPUT_SELECT(5));
819 DUMP_REG(DC_COM_PIN_OUTPUT_SELECT(6));
820 DUMP_REG(DC_COM_PIN_MISC_CONTROL
);
821 DUMP_REG(DC_COM_PIN_PM0_CONTROL
);
822 DUMP_REG(DC_COM_PIN_PM0_DUTY_CYCLE
);
823 DUMP_REG(DC_COM_PIN_PM1_CONTROL
);
824 DUMP_REG(DC_COM_PIN_PM1_DUTY_CYCLE
);
825 DUMP_REG(DC_COM_SPI_CONTROL
);
826 DUMP_REG(DC_COM_SPI_START_BYTE
);
827 DUMP_REG(DC_COM_HSPI_WRITE_DATA_AB
);
828 DUMP_REG(DC_COM_HSPI_WRITE_DATA_CD
);
829 DUMP_REG(DC_COM_HSPI_CS_DC
);
830 DUMP_REG(DC_COM_SCRATCH_REGISTER_A
);
831 DUMP_REG(DC_COM_SCRATCH_REGISTER_B
);
832 DUMP_REG(DC_COM_GPIO_CTRL
);
833 DUMP_REG(DC_COM_GPIO_DEBOUNCE_COUNTER
);
834 DUMP_REG(DC_COM_CRC_CHECKSUM_LATCHED
);
835 DUMP_REG(DC_DISP_DISP_SIGNAL_OPTIONS0
);
836 DUMP_REG(DC_DISP_DISP_SIGNAL_OPTIONS1
);
837 DUMP_REG(DC_DISP_DISP_WIN_OPTIONS
);
838 DUMP_REG(DC_DISP_DISP_MEM_HIGH_PRIORITY
);
839 DUMP_REG(DC_DISP_DISP_MEM_HIGH_PRIORITY_TIMER
);
840 DUMP_REG(DC_DISP_DISP_TIMING_OPTIONS
);
841 DUMP_REG(DC_DISP_REF_TO_SYNC
);
842 DUMP_REG(DC_DISP_SYNC_WIDTH
);
843 DUMP_REG(DC_DISP_BACK_PORCH
);
844 DUMP_REG(DC_DISP_ACTIVE
);
845 DUMP_REG(DC_DISP_FRONT_PORCH
);
846 DUMP_REG(DC_DISP_H_PULSE0_CONTROL
);
847 DUMP_REG(DC_DISP_H_PULSE0_POSITION_A
);
848 DUMP_REG(DC_DISP_H_PULSE0_POSITION_B
);
849 DUMP_REG(DC_DISP_H_PULSE0_POSITION_C
);
850 DUMP_REG(DC_DISP_H_PULSE0_POSITION_D
);
851 DUMP_REG(DC_DISP_H_PULSE1_CONTROL
);
852 DUMP_REG(DC_DISP_H_PULSE1_POSITION_A
);
853 DUMP_REG(DC_DISP_H_PULSE1_POSITION_B
);
854 DUMP_REG(DC_DISP_H_PULSE1_POSITION_C
);
855 DUMP_REG(DC_DISP_H_PULSE1_POSITION_D
);
856 DUMP_REG(DC_DISP_H_PULSE2_CONTROL
);
857 DUMP_REG(DC_DISP_H_PULSE2_POSITION_A
);
858 DUMP_REG(DC_DISP_H_PULSE2_POSITION_B
);
859 DUMP_REG(DC_DISP_H_PULSE2_POSITION_C
);
860 DUMP_REG(DC_DISP_H_PULSE2_POSITION_D
);
861 DUMP_REG(DC_DISP_V_PULSE0_CONTROL
);
862 DUMP_REG(DC_DISP_V_PULSE0_POSITION_A
);
863 DUMP_REG(DC_DISP_V_PULSE0_POSITION_B
);
864 DUMP_REG(DC_DISP_V_PULSE0_POSITION_C
);
865 DUMP_REG(DC_DISP_V_PULSE1_CONTROL
);
866 DUMP_REG(DC_DISP_V_PULSE1_POSITION_A
);
867 DUMP_REG(DC_DISP_V_PULSE1_POSITION_B
);
868 DUMP_REG(DC_DISP_V_PULSE1_POSITION_C
);
869 DUMP_REG(DC_DISP_V_PULSE2_CONTROL
);
870 DUMP_REG(DC_DISP_V_PULSE2_POSITION_A
);
871 DUMP_REG(DC_DISP_V_PULSE3_CONTROL
);
872 DUMP_REG(DC_DISP_V_PULSE3_POSITION_A
);
873 DUMP_REG(DC_DISP_M0_CONTROL
);
874 DUMP_REG(DC_DISP_M1_CONTROL
);
875 DUMP_REG(DC_DISP_DI_CONTROL
);
876 DUMP_REG(DC_DISP_PP_CONTROL
);
877 DUMP_REG(DC_DISP_PP_SELECT_A
);
878 DUMP_REG(DC_DISP_PP_SELECT_B
);
879 DUMP_REG(DC_DISP_PP_SELECT_C
);
880 DUMP_REG(DC_DISP_PP_SELECT_D
);
881 DUMP_REG(DC_DISP_DISP_CLOCK_CONTROL
);
882 DUMP_REG(DC_DISP_DISP_INTERFACE_CONTROL
);
883 DUMP_REG(DC_DISP_DISP_COLOR_CONTROL
);
884 DUMP_REG(DC_DISP_SHIFT_CLOCK_OPTIONS
);
885 DUMP_REG(DC_DISP_DATA_ENABLE_OPTIONS
);
886 DUMP_REG(DC_DISP_SERIAL_INTERFACE_OPTIONS
);
887 DUMP_REG(DC_DISP_LCD_SPI_OPTIONS
);
888 DUMP_REG(DC_DISP_BORDER_COLOR
);
889 DUMP_REG(DC_DISP_COLOR_KEY0_LOWER
);
890 DUMP_REG(DC_DISP_COLOR_KEY0_UPPER
);
891 DUMP_REG(DC_DISP_COLOR_KEY1_LOWER
);
892 DUMP_REG(DC_DISP_COLOR_KEY1_UPPER
);
893 DUMP_REG(DC_DISP_CURSOR_FOREGROUND
);
894 DUMP_REG(DC_DISP_CURSOR_BACKGROUND
);
895 DUMP_REG(DC_DISP_CURSOR_START_ADDR
);
896 DUMP_REG(DC_DISP_CURSOR_START_ADDR_NS
);
897 DUMP_REG(DC_DISP_CURSOR_POSITION
);
898 DUMP_REG(DC_DISP_CURSOR_POSITION_NS
);
899 DUMP_REG(DC_DISP_INIT_SEQ_CONTROL
);
900 DUMP_REG(DC_DISP_SPI_INIT_SEQ_DATA_A
);
901 DUMP_REG(DC_DISP_SPI_INIT_SEQ_DATA_B
);
902 DUMP_REG(DC_DISP_SPI_INIT_SEQ_DATA_C
);
903 DUMP_REG(DC_DISP_SPI_INIT_SEQ_DATA_D
);
904 DUMP_REG(DC_DISP_DC_MCCIF_FIFOCTRL
);
905 DUMP_REG(DC_DISP_MCCIF_DISPLAY0A_HYST
);
906 DUMP_REG(DC_DISP_MCCIF_DISPLAY0B_HYST
);
907 DUMP_REG(DC_DISP_MCCIF_DISPLAY1A_HYST
);
908 DUMP_REG(DC_DISP_MCCIF_DISPLAY1B_HYST
);
909 DUMP_REG(DC_DISP_DAC_CRT_CTRL
);
910 DUMP_REG(DC_DISP_DISP_MISC_CONTROL
);
911 DUMP_REG(DC_DISP_SD_CONTROL
);
912 DUMP_REG(DC_DISP_SD_CSC_COEFF
);
913 DUMP_REG(DC_DISP_SD_LUT(0));
914 DUMP_REG(DC_DISP_SD_LUT(1));
915 DUMP_REG(DC_DISP_SD_LUT(2));
916 DUMP_REG(DC_DISP_SD_LUT(3));
917 DUMP_REG(DC_DISP_SD_LUT(4));
918 DUMP_REG(DC_DISP_SD_LUT(5));
919 DUMP_REG(DC_DISP_SD_LUT(6));
920 DUMP_REG(DC_DISP_SD_LUT(7));
921 DUMP_REG(DC_DISP_SD_LUT(8));
922 DUMP_REG(DC_DISP_SD_FLICKER_CONTROL
);
923 DUMP_REG(DC_DISP_DC_PIXEL_COUNT
);
924 DUMP_REG(DC_DISP_SD_HISTOGRAM(0));
925 DUMP_REG(DC_DISP_SD_HISTOGRAM(1));
926 DUMP_REG(DC_DISP_SD_HISTOGRAM(2));
927 DUMP_REG(DC_DISP_SD_HISTOGRAM(3));
928 DUMP_REG(DC_DISP_SD_HISTOGRAM(4));
929 DUMP_REG(DC_DISP_SD_HISTOGRAM(5));
930 DUMP_REG(DC_DISP_SD_HISTOGRAM(6));
931 DUMP_REG(DC_DISP_SD_HISTOGRAM(7));
932 DUMP_REG(DC_DISP_SD_BL_TF(0));
933 DUMP_REG(DC_DISP_SD_BL_TF(1));
934 DUMP_REG(DC_DISP_SD_BL_TF(2));
935 DUMP_REG(DC_DISP_SD_BL_TF(3));
936 DUMP_REG(DC_DISP_SD_BL_CONTROL
);
937 DUMP_REG(DC_DISP_SD_HW_K_VALUES
);
938 DUMP_REG(DC_DISP_SD_MAN_K_VALUES
);
939 DUMP_REG(DC_WIN_WIN_OPTIONS
);
940 DUMP_REG(DC_WIN_BYTE_SWAP
);
941 DUMP_REG(DC_WIN_BUFFER_CONTROL
);
942 DUMP_REG(DC_WIN_COLOR_DEPTH
);
943 DUMP_REG(DC_WIN_POSITION
);
944 DUMP_REG(DC_WIN_SIZE
);
945 DUMP_REG(DC_WIN_PRESCALED_SIZE
);
946 DUMP_REG(DC_WIN_H_INITIAL_DDA
);
947 DUMP_REG(DC_WIN_V_INITIAL_DDA
);
948 DUMP_REG(DC_WIN_DDA_INC
);
949 DUMP_REG(DC_WIN_LINE_STRIDE
);
950 DUMP_REG(DC_WIN_BUF_STRIDE
);
951 DUMP_REG(DC_WIN_UV_BUF_STRIDE
);
952 DUMP_REG(DC_WIN_BUFFER_ADDR_MODE
);
953 DUMP_REG(DC_WIN_DV_CONTROL
);
954 DUMP_REG(DC_WIN_BLEND_NOKEY
);
955 DUMP_REG(DC_WIN_BLEND_1WIN
);
956 DUMP_REG(DC_WIN_BLEND_2WIN_X
);
957 DUMP_REG(DC_WIN_BLEND_2WIN_Y
);
958 DUMP_REG(DC_WIN_BLEND_3WIN_XY
);
959 DUMP_REG(DC_WIN_HP_FETCH_CONTROL
);
960 DUMP_REG(DC_WINBUF_START_ADDR
);
961 DUMP_REG(DC_WINBUF_START_ADDR_NS
);
962 DUMP_REG(DC_WINBUF_START_ADDR_U
);
963 DUMP_REG(DC_WINBUF_START_ADDR_U_NS
);
964 DUMP_REG(DC_WINBUF_START_ADDR_V
);
965 DUMP_REG(DC_WINBUF_START_ADDR_V_NS
);
966 DUMP_REG(DC_WINBUF_ADDR_H_OFFSET
);
967 DUMP_REG(DC_WINBUF_ADDR_H_OFFSET_NS
);
968 DUMP_REG(DC_WINBUF_ADDR_V_OFFSET
);
969 DUMP_REG(DC_WINBUF_ADDR_V_OFFSET_NS
);
970 DUMP_REG(DC_WINBUF_UFLOW_STATUS
);
971 DUMP_REG(DC_WINBUF_AD_UFLOW_STATUS
);
972 DUMP_REG(DC_WINBUF_BD_UFLOW_STATUS
);
973 DUMP_REG(DC_WINBUF_CD_UFLOW_STATUS
);
980 static struct drm_info_list debugfs_files
[] = {
981 { "regs", tegra_dc_show_regs
, 0, NULL
},
984 static int tegra_dc_debugfs_init(struct tegra_dc
*dc
, struct drm_minor
*minor
)
990 name
= kasprintf(GFP_KERNEL
, "dc.%d", dc
->pipe
);
991 dc
->debugfs
= debugfs_create_dir(name
, minor
->debugfs_root
);
997 dc
->debugfs_files
= kmemdup(debugfs_files
, sizeof(debugfs_files
),
999 if (!dc
->debugfs_files
) {
1004 for (i
= 0; i
< ARRAY_SIZE(debugfs_files
); i
++)
1005 dc
->debugfs_files
[i
].data
= dc
;
1007 err
= drm_debugfs_create_files(dc
->debugfs_files
,
1008 ARRAY_SIZE(debugfs_files
),
1009 dc
->debugfs
, minor
);
1018 kfree(dc
->debugfs_files
);
1019 dc
->debugfs_files
= NULL
;
1021 debugfs_remove(dc
->debugfs
);
1027 static int tegra_dc_debugfs_exit(struct tegra_dc
*dc
)
1029 drm_debugfs_remove_files(dc
->debugfs_files
, ARRAY_SIZE(debugfs_files
),
1033 kfree(dc
->debugfs_files
);
1034 dc
->debugfs_files
= NULL
;
1036 debugfs_remove(dc
->debugfs
);
1042 static int tegra_dc_drm_init(struct host1x_client
*client
,
1043 struct drm_device
*drm
)
1045 struct tegra_dc
*dc
= host1x_client_to_dc(client
);
1048 dc
->pipe
= drm
->mode_config
.num_crtc
;
1050 drm_crtc_init(drm
, &dc
->base
, &tegra_crtc_funcs
);
1051 drm_mode_crtc_set_gamma_size(&dc
->base
, 256);
1052 drm_crtc_helper_add(&dc
->base
, &tegra_crtc_helper_funcs
);
1054 err
= tegra_dc_rgb_init(drm
, dc
);
1055 if (err
< 0 && err
!= -ENODEV
) {
1056 dev_err(dc
->dev
, "failed to initialize RGB output: %d\n", err
);
1060 err
= tegra_dc_add_planes(drm
, dc
);
1064 if (IS_ENABLED(CONFIG_DEBUG_FS
)) {
1065 err
= tegra_dc_debugfs_init(dc
, drm
->primary
);
1067 dev_err(dc
->dev
, "debugfs setup failed: %d\n", err
);
1070 err
= devm_request_irq(dc
->dev
, dc
->irq
, tegra_dc_irq
, 0,
1071 dev_name(dc
->dev
), dc
);
1073 dev_err(dc
->dev
, "failed to request IRQ#%u: %d\n", dc
->irq
,
1081 static int tegra_dc_drm_exit(struct host1x_client
*client
)
1083 struct tegra_dc
*dc
= host1x_client_to_dc(client
);
1086 devm_free_irq(dc
->dev
, dc
->irq
, dc
);
1088 if (IS_ENABLED(CONFIG_DEBUG_FS
)) {
1089 err
= tegra_dc_debugfs_exit(dc
);
1091 dev_err(dc
->dev
, "debugfs cleanup failed: %d\n", err
);
1094 err
= tegra_dc_rgb_exit(dc
);
1096 dev_err(dc
->dev
, "failed to shutdown RGB output: %d\n", err
);
1103 static const struct host1x_client_ops dc_client_ops
= {
1104 .drm_init
= tegra_dc_drm_init
,
1105 .drm_exit
= tegra_dc_drm_exit
,
1108 static int tegra_dc_probe(struct platform_device
*pdev
)
1110 struct host1x_drm
*host1x
= host1x_get_drm_data(pdev
->dev
.parent
);
1111 struct resource
*regs
;
1112 struct tegra_dc
*dc
;
1115 dc
= devm_kzalloc(&pdev
->dev
, sizeof(*dc
), GFP_KERNEL
);
1119 spin_lock_init(&dc
->lock
);
1120 INIT_LIST_HEAD(&dc
->list
);
1121 dc
->dev
= &pdev
->dev
;
1123 dc
->clk
= devm_clk_get(&pdev
->dev
, NULL
);
1124 if (IS_ERR(dc
->clk
)) {
1125 dev_err(&pdev
->dev
, "failed to get clock\n");
1126 return PTR_ERR(dc
->clk
);
1129 err
= clk_prepare_enable(dc
->clk
);
1133 regs
= platform_get_resource(pdev
, IORESOURCE_MEM
, 0);
1134 dc
->regs
= devm_ioremap_resource(&pdev
->dev
, regs
);
1135 if (IS_ERR(dc
->regs
))
1136 return PTR_ERR(dc
->regs
);
1138 dc
->irq
= platform_get_irq(pdev
, 0);
1140 dev_err(&pdev
->dev
, "failed to get IRQ\n");
1144 INIT_LIST_HEAD(&dc
->client
.list
);
1145 dc
->client
.ops
= &dc_client_ops
;
1146 dc
->client
.dev
= &pdev
->dev
;
1148 err
= tegra_dc_rgb_probe(dc
);
1149 if (err
< 0 && err
!= -ENODEV
) {
1150 dev_err(&pdev
->dev
, "failed to probe RGB output: %d\n", err
);
1154 err
= host1x_register_client(host1x
, &dc
->client
);
1156 dev_err(&pdev
->dev
, "failed to register host1x client: %d\n",
1161 platform_set_drvdata(pdev
, dc
);
1166 static int tegra_dc_remove(struct platform_device
*pdev
)
1168 struct host1x_drm
*host1x
= host1x_get_drm_data(pdev
->dev
.parent
);
1169 struct tegra_dc
*dc
= platform_get_drvdata(pdev
);
1172 err
= host1x_unregister_client(host1x
, &dc
->client
);
1174 dev_err(&pdev
->dev
, "failed to unregister host1x client: %d\n",
1179 clk_disable_unprepare(dc
->clk
);
1184 static struct of_device_id tegra_dc_of_match
[] = {
1185 { .compatible
= "nvidia,tegra30-dc", },
1186 { .compatible
= "nvidia,tegra20-dc", },
1190 struct platform_driver tegra_dc_driver
= {
1193 .owner
= THIS_MODULE
,
1194 .of_match_table
= tegra_dc_of_match
,
1196 .probe
= tegra_dc_probe
,
1197 .remove
= tegra_dc_remove
,