1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Copyright (C) 2017 Icenowy Zheng <icenowy@aosc.io>
5 * Based on sun4i_backend.c, which is:
6 * Copyright (C) 2015 Free Electrons
7 * Copyright (C) 2015 NextThing Co
10 #include <linux/component.h>
11 #include <linux/dma-mapping.h>
12 #include <linux/module.h>
13 #include <linux/of_device.h>
14 #include <linux/of_graph.h>
15 #include <linux/reset.h>
17 #include <drm/drm_atomic_helper.h>
18 #include <drm/drm_crtc.h>
19 #include <drm/drm_fb_cma_helper.h>
20 #include <drm/drm_gem_cma_helper.h>
21 #include <drm/drm_plane_helper.h>
22 #include <drm/drm_probe_helper.h>
24 #include "sun4i_drv.h"
25 #include "sun8i_mixer.h"
26 #include "sun8i_ui_layer.h"
27 #include "sun8i_vi_layer.h"
28 #include "sunxi_engine.h"
30 static const struct de2_fmt_info de2_formats
[] = {
32 .drm_fmt
= DRM_FORMAT_ARGB8888
,
33 .de2_fmt
= SUN8I_MIXER_FBFMT_ARGB8888
,
35 .csc
= SUN8I_CSC_MODE_OFF
,
38 .drm_fmt
= DRM_FORMAT_ABGR8888
,
39 .de2_fmt
= SUN8I_MIXER_FBFMT_ABGR8888
,
41 .csc
= SUN8I_CSC_MODE_OFF
,
44 .drm_fmt
= DRM_FORMAT_RGBA8888
,
45 .de2_fmt
= SUN8I_MIXER_FBFMT_RGBA8888
,
47 .csc
= SUN8I_CSC_MODE_OFF
,
50 .drm_fmt
= DRM_FORMAT_BGRA8888
,
51 .de2_fmt
= SUN8I_MIXER_FBFMT_BGRA8888
,
53 .csc
= SUN8I_CSC_MODE_OFF
,
56 .drm_fmt
= DRM_FORMAT_XRGB8888
,
57 .de2_fmt
= SUN8I_MIXER_FBFMT_XRGB8888
,
59 .csc
= SUN8I_CSC_MODE_OFF
,
62 .drm_fmt
= DRM_FORMAT_XBGR8888
,
63 .de2_fmt
= SUN8I_MIXER_FBFMT_XBGR8888
,
65 .csc
= SUN8I_CSC_MODE_OFF
,
68 .drm_fmt
= DRM_FORMAT_RGBX8888
,
69 .de2_fmt
= SUN8I_MIXER_FBFMT_RGBX8888
,
71 .csc
= SUN8I_CSC_MODE_OFF
,
74 .drm_fmt
= DRM_FORMAT_BGRX8888
,
75 .de2_fmt
= SUN8I_MIXER_FBFMT_BGRX8888
,
77 .csc
= SUN8I_CSC_MODE_OFF
,
80 .drm_fmt
= DRM_FORMAT_RGB888
,
81 .de2_fmt
= SUN8I_MIXER_FBFMT_RGB888
,
83 .csc
= SUN8I_CSC_MODE_OFF
,
86 .drm_fmt
= DRM_FORMAT_BGR888
,
87 .de2_fmt
= SUN8I_MIXER_FBFMT_BGR888
,
89 .csc
= SUN8I_CSC_MODE_OFF
,
92 .drm_fmt
= DRM_FORMAT_RGB565
,
93 .de2_fmt
= SUN8I_MIXER_FBFMT_RGB565
,
95 .csc
= SUN8I_CSC_MODE_OFF
,
98 .drm_fmt
= DRM_FORMAT_BGR565
,
99 .de2_fmt
= SUN8I_MIXER_FBFMT_BGR565
,
101 .csc
= SUN8I_CSC_MODE_OFF
,
104 .drm_fmt
= DRM_FORMAT_ARGB4444
,
105 .de2_fmt
= SUN8I_MIXER_FBFMT_ARGB4444
,
107 .csc
= SUN8I_CSC_MODE_OFF
,
110 .drm_fmt
= DRM_FORMAT_ABGR4444
,
111 .de2_fmt
= SUN8I_MIXER_FBFMT_ABGR4444
,
113 .csc
= SUN8I_CSC_MODE_OFF
,
116 .drm_fmt
= DRM_FORMAT_RGBA4444
,
117 .de2_fmt
= SUN8I_MIXER_FBFMT_RGBA4444
,
119 .csc
= SUN8I_CSC_MODE_OFF
,
122 .drm_fmt
= DRM_FORMAT_BGRA4444
,
123 .de2_fmt
= SUN8I_MIXER_FBFMT_BGRA4444
,
125 .csc
= SUN8I_CSC_MODE_OFF
,
128 .drm_fmt
= DRM_FORMAT_ARGB1555
,
129 .de2_fmt
= SUN8I_MIXER_FBFMT_ARGB1555
,
131 .csc
= SUN8I_CSC_MODE_OFF
,
134 .drm_fmt
= DRM_FORMAT_ABGR1555
,
135 .de2_fmt
= SUN8I_MIXER_FBFMT_ABGR1555
,
137 .csc
= SUN8I_CSC_MODE_OFF
,
140 .drm_fmt
= DRM_FORMAT_RGBA5551
,
141 .de2_fmt
= SUN8I_MIXER_FBFMT_RGBA5551
,
143 .csc
= SUN8I_CSC_MODE_OFF
,
146 .drm_fmt
= DRM_FORMAT_BGRA5551
,
147 .de2_fmt
= SUN8I_MIXER_FBFMT_BGRA5551
,
149 .csc
= SUN8I_CSC_MODE_OFF
,
152 .drm_fmt
= DRM_FORMAT_UYVY
,
153 .de2_fmt
= SUN8I_MIXER_FBFMT_UYVY
,
155 .csc
= SUN8I_CSC_MODE_YUV2RGB
,
158 .drm_fmt
= DRM_FORMAT_VYUY
,
159 .de2_fmt
= SUN8I_MIXER_FBFMT_VYUY
,
161 .csc
= SUN8I_CSC_MODE_YUV2RGB
,
164 .drm_fmt
= DRM_FORMAT_YUYV
,
165 .de2_fmt
= SUN8I_MIXER_FBFMT_YUYV
,
167 .csc
= SUN8I_CSC_MODE_YUV2RGB
,
170 .drm_fmt
= DRM_FORMAT_YVYU
,
171 .de2_fmt
= SUN8I_MIXER_FBFMT_YVYU
,
173 .csc
= SUN8I_CSC_MODE_YUV2RGB
,
176 .drm_fmt
= DRM_FORMAT_NV16
,
177 .de2_fmt
= SUN8I_MIXER_FBFMT_NV16
,
179 .csc
= SUN8I_CSC_MODE_YUV2RGB
,
182 .drm_fmt
= DRM_FORMAT_NV61
,
183 .de2_fmt
= SUN8I_MIXER_FBFMT_NV61
,
185 .csc
= SUN8I_CSC_MODE_YUV2RGB
,
188 .drm_fmt
= DRM_FORMAT_NV12
,
189 .de2_fmt
= SUN8I_MIXER_FBFMT_NV12
,
191 .csc
= SUN8I_CSC_MODE_YUV2RGB
,
194 .drm_fmt
= DRM_FORMAT_NV21
,
195 .de2_fmt
= SUN8I_MIXER_FBFMT_NV21
,
197 .csc
= SUN8I_CSC_MODE_YUV2RGB
,
200 .drm_fmt
= DRM_FORMAT_YUV444
,
201 .de2_fmt
= SUN8I_MIXER_FBFMT_RGB888
,
203 .csc
= SUN8I_CSC_MODE_YUV2RGB
,
206 .drm_fmt
= DRM_FORMAT_YUV422
,
207 .de2_fmt
= SUN8I_MIXER_FBFMT_YUV422
,
209 .csc
= SUN8I_CSC_MODE_YUV2RGB
,
212 .drm_fmt
= DRM_FORMAT_YUV420
,
213 .de2_fmt
= SUN8I_MIXER_FBFMT_YUV420
,
215 .csc
= SUN8I_CSC_MODE_YUV2RGB
,
218 .drm_fmt
= DRM_FORMAT_YUV411
,
219 .de2_fmt
= SUN8I_MIXER_FBFMT_YUV411
,
221 .csc
= SUN8I_CSC_MODE_YUV2RGB
,
224 .drm_fmt
= DRM_FORMAT_YVU444
,
225 .de2_fmt
= SUN8I_MIXER_FBFMT_RGB888
,
227 .csc
= SUN8I_CSC_MODE_YVU2RGB
,
230 .drm_fmt
= DRM_FORMAT_YVU422
,
231 .de2_fmt
= SUN8I_MIXER_FBFMT_YUV422
,
233 .csc
= SUN8I_CSC_MODE_YVU2RGB
,
236 .drm_fmt
= DRM_FORMAT_YVU420
,
237 .de2_fmt
= SUN8I_MIXER_FBFMT_YUV420
,
239 .csc
= SUN8I_CSC_MODE_YVU2RGB
,
242 .drm_fmt
= DRM_FORMAT_YVU411
,
243 .de2_fmt
= SUN8I_MIXER_FBFMT_YUV411
,
245 .csc
= SUN8I_CSC_MODE_YVU2RGB
,
249 const struct de2_fmt_info
*sun8i_mixer_format_info(u32 format
)
253 for (i
= 0; i
< ARRAY_SIZE(de2_formats
); ++i
)
254 if (de2_formats
[i
].drm_fmt
== format
)
255 return &de2_formats
[i
];
260 static void sun8i_mixer_commit(struct sunxi_engine
*engine
)
262 DRM_DEBUG_DRIVER("Committing changes\n");
264 regmap_write(engine
->regs
, SUN8I_MIXER_GLOBAL_DBUFF
,
265 SUN8I_MIXER_GLOBAL_DBUFF_ENABLE
);
268 static struct drm_plane
**sun8i_layers_init(struct drm_device
*drm
,
269 struct sunxi_engine
*engine
)
271 struct drm_plane
**planes
;
272 struct sun8i_mixer
*mixer
= engine_to_sun8i_mixer(engine
);
275 planes
= devm_kcalloc(drm
->dev
,
276 mixer
->cfg
->vi_num
+ mixer
->cfg
->ui_num
+ 1,
277 sizeof(*planes
), GFP_KERNEL
);
279 return ERR_PTR(-ENOMEM
);
281 for (i
= 0; i
< mixer
->cfg
->vi_num
; i
++) {
282 struct sun8i_vi_layer
*layer
;
284 layer
= sun8i_vi_layer_init_one(drm
, mixer
, i
);
287 "Couldn't initialize overlay plane\n");
288 return ERR_CAST(layer
);
291 planes
[i
] = &layer
->plane
;
294 for (i
= 0; i
< mixer
->cfg
->ui_num
; i
++) {
295 struct sun8i_ui_layer
*layer
;
297 layer
= sun8i_ui_layer_init_one(drm
, mixer
, i
);
299 dev_err(drm
->dev
, "Couldn't initialize %s plane\n",
300 i
? "overlay" : "primary");
301 return ERR_CAST(layer
);
304 planes
[mixer
->cfg
->vi_num
+ i
] = &layer
->plane
;
310 static const struct sunxi_engine_ops sun8i_engine_ops
= {
311 .commit
= sun8i_mixer_commit
,
312 .layers_init
= sun8i_layers_init
,
315 static struct regmap_config sun8i_mixer_regmap_config
= {
319 .max_register
= 0xbfffc, /* guessed */
322 static int sun8i_mixer_of_get_id(struct device_node
*node
)
324 struct device_node
*ep
, *remote
;
325 struct of_endpoint of_ep
;
327 /* Output port is 1, and we want the first endpoint. */
328 ep
= of_graph_get_endpoint_by_regs(node
, 1, -1);
332 remote
= of_graph_get_remote_endpoint(ep
);
337 of_graph_parse_endpoint(remote
, &of_ep
);
342 static int sun8i_mixer_bind(struct device
*dev
, struct device
*master
,
345 struct platform_device
*pdev
= to_platform_device(dev
);
346 struct drm_device
*drm
= data
;
347 struct sun4i_drv
*drv
= drm
->dev_private
;
348 struct sun8i_mixer
*mixer
;
349 struct resource
*res
;
356 * The mixer uses single 32-bit register to store memory
357 * addresses, so that it cannot deal with 64-bit memory
359 * Restrict the DMA mask so that the mixer won't be
360 * allocated some memory that is too high.
362 ret
= dma_set_mask(dev
, DMA_BIT_MASK(32));
364 dev_err(dev
, "Cannot do 32-bit DMA.\n");
368 mixer
= devm_kzalloc(dev
, sizeof(*mixer
), GFP_KERNEL
);
371 dev_set_drvdata(dev
, mixer
);
372 mixer
->engine
.ops
= &sun8i_engine_ops
;
373 mixer
->engine
.node
= dev
->of_node
;
376 * While this function can fail, we shouldn't do anything
377 * if this happens. Some early DE2 DT entries don't provide
378 * mixer id but work nevertheless because matching between
379 * TCON and mixer is done by comparing node pointers (old
380 * way) instead comparing ids. If this function fails and
381 * id is needed, it will fail during id matching anyway.
383 mixer
->engine
.id
= sun8i_mixer_of_get_id(dev
->of_node
);
385 mixer
->cfg
= of_device_get_match_data(dev
);
389 res
= platform_get_resource(pdev
, IORESOURCE_MEM
, 0);
390 regs
= devm_ioremap_resource(dev
, res
);
392 return PTR_ERR(regs
);
394 mixer
->engine
.regs
= devm_regmap_init_mmio(dev
, regs
,
395 &sun8i_mixer_regmap_config
);
396 if (IS_ERR(mixer
->engine
.regs
)) {
397 dev_err(dev
, "Couldn't create the mixer regmap\n");
398 return PTR_ERR(mixer
->engine
.regs
);
401 mixer
->reset
= devm_reset_control_get(dev
, NULL
);
402 if (IS_ERR(mixer
->reset
)) {
403 dev_err(dev
, "Couldn't get our reset line\n");
404 return PTR_ERR(mixer
->reset
);
407 ret
= reset_control_deassert(mixer
->reset
);
409 dev_err(dev
, "Couldn't deassert our reset line\n");
413 mixer
->bus_clk
= devm_clk_get(dev
, "bus");
414 if (IS_ERR(mixer
->bus_clk
)) {
415 dev_err(dev
, "Couldn't get the mixer bus clock\n");
416 ret
= PTR_ERR(mixer
->bus_clk
);
417 goto err_assert_reset
;
419 clk_prepare_enable(mixer
->bus_clk
);
421 mixer
->mod_clk
= devm_clk_get(dev
, "mod");
422 if (IS_ERR(mixer
->mod_clk
)) {
423 dev_err(dev
, "Couldn't get the mixer module clock\n");
424 ret
= PTR_ERR(mixer
->mod_clk
);
425 goto err_disable_bus_clk
;
429 * It seems that we need to enforce that rate for whatever
430 * reason for the mixer to be functional. Make sure it's the
433 if (mixer
->cfg
->mod_rate
)
434 clk_set_rate(mixer
->mod_clk
, mixer
->cfg
->mod_rate
);
436 clk_prepare_enable(mixer
->mod_clk
);
438 list_add_tail(&mixer
->engine
.list
, &drv
->engine_list
);
440 base
= sun8i_blender_base(mixer
);
442 /* Reset registers and disable unused sub-engines */
443 if (mixer
->cfg
->is_de3
) {
444 for (i
= 0; i
< DE3_MIXER_UNIT_SIZE
; i
+= 4)
445 regmap_write(mixer
->engine
.regs
, i
, 0);
447 regmap_write(mixer
->engine
.regs
, SUN50I_MIXER_FCE_EN
, 0);
448 regmap_write(mixer
->engine
.regs
, SUN50I_MIXER_PEAK_EN
, 0);
449 regmap_write(mixer
->engine
.regs
, SUN50I_MIXER_LCTI_EN
, 0);
450 regmap_write(mixer
->engine
.regs
, SUN50I_MIXER_BLS_EN
, 0);
451 regmap_write(mixer
->engine
.regs
, SUN50I_MIXER_FCC_EN
, 0);
452 regmap_write(mixer
->engine
.regs
, SUN50I_MIXER_DNS_EN
, 0);
453 regmap_write(mixer
->engine
.regs
, SUN50I_MIXER_DRC_EN
, 0);
454 regmap_write(mixer
->engine
.regs
, SUN50I_MIXER_FMT_EN
, 0);
455 regmap_write(mixer
->engine
.regs
, SUN50I_MIXER_CDC0_EN
, 0);
456 regmap_write(mixer
->engine
.regs
, SUN50I_MIXER_CDC1_EN
, 0);
458 for (i
= 0; i
< DE2_MIXER_UNIT_SIZE
; i
+= 4)
459 regmap_write(mixer
->engine
.regs
, i
, 0);
461 regmap_write(mixer
->engine
.regs
, SUN8I_MIXER_FCE_EN
, 0);
462 regmap_write(mixer
->engine
.regs
, SUN8I_MIXER_BWS_EN
, 0);
463 regmap_write(mixer
->engine
.regs
, SUN8I_MIXER_LTI_EN
, 0);
464 regmap_write(mixer
->engine
.regs
, SUN8I_MIXER_PEAK_EN
, 0);
465 regmap_write(mixer
->engine
.regs
, SUN8I_MIXER_ASE_EN
, 0);
466 regmap_write(mixer
->engine
.regs
, SUN8I_MIXER_FCC_EN
, 0);
467 regmap_write(mixer
->engine
.regs
, SUN8I_MIXER_DCSC_EN
, 0);
470 /* Enable the mixer */
471 regmap_write(mixer
->engine
.regs
, SUN8I_MIXER_GLOBAL_CTL
,
472 SUN8I_MIXER_GLOBAL_CTL_RT_EN
);
474 /* Set background color to black */
475 regmap_write(mixer
->engine
.regs
, SUN8I_MIXER_BLEND_BKCOLOR(base
),
476 SUN8I_MIXER_BLEND_COLOR_BLACK
);
479 * Set fill color of bottom plane to black. Generally not needed
480 * except when VI plane is at bottom (zpos = 0) and enabled.
482 regmap_write(mixer
->engine
.regs
, SUN8I_MIXER_BLEND_PIPE_CTL(base
),
483 SUN8I_MIXER_BLEND_PIPE_CTL_FC_EN(0));
484 regmap_write(mixer
->engine
.regs
, SUN8I_MIXER_BLEND_ATTR_FCOLOR(base
, 0),
485 SUN8I_MIXER_BLEND_COLOR_BLACK
);
487 plane_cnt
= mixer
->cfg
->vi_num
+ mixer
->cfg
->ui_num
;
488 for (i
= 0; i
< plane_cnt
; i
++)
489 regmap_write(mixer
->engine
.regs
,
490 SUN8I_MIXER_BLEND_MODE(base
, i
),
491 SUN8I_MIXER_BLEND_MODE_DEF
);
493 regmap_update_bits(mixer
->engine
.regs
, SUN8I_MIXER_BLEND_PIPE_CTL(base
),
494 SUN8I_MIXER_BLEND_PIPE_CTL_EN_MSK
, 0);
499 clk_disable_unprepare(mixer
->bus_clk
);
501 reset_control_assert(mixer
->reset
);
505 static void sun8i_mixer_unbind(struct device
*dev
, struct device
*master
,
508 struct sun8i_mixer
*mixer
= dev_get_drvdata(dev
);
510 list_del(&mixer
->engine
.list
);
512 clk_disable_unprepare(mixer
->mod_clk
);
513 clk_disable_unprepare(mixer
->bus_clk
);
514 reset_control_assert(mixer
->reset
);
517 static const struct component_ops sun8i_mixer_ops
= {
518 .bind
= sun8i_mixer_bind
,
519 .unbind
= sun8i_mixer_unbind
,
522 static int sun8i_mixer_probe(struct platform_device
*pdev
)
524 return component_add(&pdev
->dev
, &sun8i_mixer_ops
);
527 static int sun8i_mixer_remove(struct platform_device
*pdev
)
529 component_del(&pdev
->dev
, &sun8i_mixer_ops
);
534 static const struct sun8i_mixer_cfg sun8i_a83t_mixer0_cfg
= {
537 .scanline_yuv
= 2048,
542 static const struct sun8i_mixer_cfg sun8i_a83t_mixer1_cfg
= {
545 .scanline_yuv
= 2048,
550 static const struct sun8i_mixer_cfg sun8i_h3_mixer0_cfg
= {
552 .mod_rate
= 432000000,
554 .scanline_yuv
= 2048,
559 static const struct sun8i_mixer_cfg sun8i_r40_mixer0_cfg
= {
561 .mod_rate
= 297000000,
563 .scanline_yuv
= 2048,
568 static const struct sun8i_mixer_cfg sun8i_r40_mixer1_cfg
= {
570 .mod_rate
= 297000000,
572 .scanline_yuv
= 2048,
577 static const struct sun8i_mixer_cfg sun8i_v3s_mixer_cfg
= {
581 .scanline_yuv
= 2048,
583 .mod_rate
= 150000000,
586 static const struct sun8i_mixer_cfg sun50i_a64_mixer0_cfg
= {
588 .mod_rate
= 297000000,
590 .scanline_yuv
= 4096,
595 static const struct sun8i_mixer_cfg sun50i_a64_mixer1_cfg
= {
597 .mod_rate
= 297000000,
599 .scanline_yuv
= 2048,
604 static const struct sun8i_mixer_cfg sun50i_h6_mixer0_cfg
= {
607 .mod_rate
= 600000000,
609 .scanline_yuv
= 4096,
614 static const struct of_device_id sun8i_mixer_of_table
[] = {
616 .compatible
= "allwinner,sun8i-a83t-de2-mixer-0",
617 .data
= &sun8i_a83t_mixer0_cfg
,
620 .compatible
= "allwinner,sun8i-a83t-de2-mixer-1",
621 .data
= &sun8i_a83t_mixer1_cfg
,
624 .compatible
= "allwinner,sun8i-h3-de2-mixer-0",
625 .data
= &sun8i_h3_mixer0_cfg
,
628 .compatible
= "allwinner,sun8i-r40-de2-mixer-0",
629 .data
= &sun8i_r40_mixer0_cfg
,
632 .compatible
= "allwinner,sun8i-r40-de2-mixer-1",
633 .data
= &sun8i_r40_mixer1_cfg
,
636 .compatible
= "allwinner,sun8i-v3s-de2-mixer",
637 .data
= &sun8i_v3s_mixer_cfg
,
640 .compatible
= "allwinner,sun50i-a64-de2-mixer-0",
641 .data
= &sun50i_a64_mixer0_cfg
,
644 .compatible
= "allwinner,sun50i-a64-de2-mixer-1",
645 .data
= &sun50i_a64_mixer1_cfg
,
648 .compatible
= "allwinner,sun50i-h6-de3-mixer-0",
649 .data
= &sun50i_h6_mixer0_cfg
,
653 MODULE_DEVICE_TABLE(of
, sun8i_mixer_of_table
);
655 static struct platform_driver sun8i_mixer_platform_driver
= {
656 .probe
= sun8i_mixer_probe
,
657 .remove
= sun8i_mixer_remove
,
659 .name
= "sun8i-mixer",
660 .of_match_table
= sun8i_mixer_of_table
,
663 module_platform_driver(sun8i_mixer_platform_driver
);
665 MODULE_AUTHOR("Icenowy Zheng <icenowy@aosc.io>");
666 MODULE_DESCRIPTION("Allwinner DE2 Mixer driver");
667 MODULE_LICENSE("GPL");