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1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Copyright (c) 2015 MediaTek Inc.
4 */
5
6#include <drm/drm_blend.h>
7#include <drm/drm_fourcc.h>
8#include <drm/drm_framebuffer.h>
9
10#include <linux/clk.h>
11#include <linux/component.h>
12#include <linux/module.h>
13#include <linux/of.h>
14#include <linux/platform_device.h>
15#include <linux/pm_runtime.h>
16#include <linux/soc/mediatek/mtk-cmdq.h>
17
18#include "mtk_crtc.h"
19#include "mtk_ddp_comp.h"
20#include "mtk_disp_drv.h"
21#include "mtk_drm_drv.h"
22
23#define DISP_REG_OVL_INTEN 0x0004
24#define OVL_FME_CPL_INT BIT(1)
25#define DISP_REG_OVL_INTSTA 0x0008
26#define DISP_REG_OVL_EN 0x000c
27#define DISP_REG_OVL_RST 0x0014
28#define DISP_REG_OVL_ROI_SIZE 0x0020
29#define DISP_REG_OVL_DATAPATH_CON 0x0024
30#define OVL_LAYER_SMI_ID_EN BIT(0)
31#define OVL_BGCLR_SEL_IN BIT(2)
32#define OVL_LAYER_AFBC_EN(n) BIT(4+n)
33#define DISP_REG_OVL_ROI_BGCLR 0x0028
34#define DISP_REG_OVL_SRC_CON 0x002c
35#define DISP_REG_OVL_CON(n) (0x0030 + 0x20 * (n))
36#define DISP_REG_OVL_SRC_SIZE(n) (0x0038 + 0x20 * (n))
37#define DISP_REG_OVL_OFFSET(n) (0x003c + 0x20 * (n))
38#define DISP_REG_OVL_PITCH_MSB(n) (0x0040 + 0x20 * (n))
39#define OVL_PITCH_MSB_2ND_SUBBUF BIT(16)
40#define DISP_REG_OVL_PITCH(n) (0x0044 + 0x20 * (n))
41#define OVL_CONST_BLEND BIT(28)
42#define DISP_REG_OVL_RDMA_CTRL(n) (0x00c0 + 0x20 * (n))
43#define DISP_REG_OVL_RDMA_GMC(n) (0x00c8 + 0x20 * (n))
44#define DISP_REG_OVL_ADDR_MT2701 0x0040
45#define DISP_REG_OVL_CLRFMT_EXT 0x02d0
46#define OVL_CON_CLRFMT_BIT_DEPTH_MASK(n) (GENMASK(1, 0) << (4 * (n)))
47#define OVL_CON_CLRFMT_BIT_DEPTH(depth, n) ((depth) << (4 * (n)))
48#define OVL_CON_CLRFMT_8_BIT (0)
49#define OVL_CON_CLRFMT_10_BIT (1)
50#define DISP_REG_OVL_ADDR_MT8173 0x0f40
51#define DISP_REG_OVL_ADDR(ovl, n) ((ovl)->data->addr + 0x20 * (n))
52#define DISP_REG_OVL_HDR_ADDR(ovl, n) ((ovl)->data->addr + 0x20 * (n) + 0x04)
53#define DISP_REG_OVL_HDR_PITCH(ovl, n) ((ovl)->data->addr + 0x20 * (n) + 0x08)
54
55#define GMC_THRESHOLD_BITS 16
56#define GMC_THRESHOLD_HIGH ((1 << GMC_THRESHOLD_BITS) / 4)
57#define GMC_THRESHOLD_LOW ((1 << GMC_THRESHOLD_BITS) / 8)
58
59#define OVL_CON_CLRFMT_MAN BIT(23)
60#define OVL_CON_BYTE_SWAP BIT(24)
61
62/* OVL_CON_RGB_SWAP works only if OVL_CON_CLRFMT_MAN is enabled */
63#define OVL_CON_RGB_SWAP BIT(25)
64
65#define OVL_CON_CLRFMT_RGB (1 << 12)
66#define OVL_CON_CLRFMT_ARGB8888 (2 << 12)
67#define OVL_CON_CLRFMT_RGBA8888 (3 << 12)
68#define OVL_CON_CLRFMT_ABGR8888 (OVL_CON_CLRFMT_ARGB8888 | OVL_CON_BYTE_SWAP)
69#define OVL_CON_CLRFMT_BGRA8888 (OVL_CON_CLRFMT_RGBA8888 | OVL_CON_BYTE_SWAP)
70#define OVL_CON_CLRFMT_UYVY (4 << 12)
71#define OVL_CON_CLRFMT_YUYV (5 << 12)
72#define OVL_CON_MTX_YUV_TO_RGB (6 << 16)
73#define OVL_CON_CLRFMT_PARGB8888 ((3 << 12) | OVL_CON_CLRFMT_MAN)
74#define OVL_CON_CLRFMT_PABGR8888 (OVL_CON_CLRFMT_PARGB8888 | OVL_CON_RGB_SWAP)
75#define OVL_CON_CLRFMT_PBGRA8888 (OVL_CON_CLRFMT_PARGB8888 | OVL_CON_BYTE_SWAP)
76#define OVL_CON_CLRFMT_PRGBA8888 (OVL_CON_CLRFMT_PABGR8888 | OVL_CON_BYTE_SWAP)
77#define OVL_CON_CLRFMT_RGB565(ovl) ((ovl)->data->fmt_rgb565_is_0 ? \
78 0 : OVL_CON_CLRFMT_RGB)
79#define OVL_CON_CLRFMT_RGB888(ovl) ((ovl)->data->fmt_rgb565_is_0 ? \
80 OVL_CON_CLRFMT_RGB : 0)
81#define OVL_CON_AEN BIT(8)
82#define OVL_CON_ALPHA 0xff
83#define OVL_CON_VIRT_FLIP BIT(9)
84#define OVL_CON_HORZ_FLIP BIT(10)
85
86#define OVL_COLOR_ALPHA GENMASK(31, 24)
87
88static inline bool is_10bit_rgb(u32 fmt)
89{
90 switch (fmt) {
91 case DRM_FORMAT_XRGB2101010:
92 case DRM_FORMAT_ARGB2101010:
93 case DRM_FORMAT_RGBX1010102:
94 case DRM_FORMAT_RGBA1010102:
95 case DRM_FORMAT_XBGR2101010:
96 case DRM_FORMAT_ABGR2101010:
97 case DRM_FORMAT_BGRX1010102:
98 case DRM_FORMAT_BGRA1010102:
99 return true;
100 }
101 return false;
102}
103
104static const u32 mt8173_formats[] = {
105 DRM_FORMAT_XRGB8888,
106 DRM_FORMAT_ARGB8888,
107 DRM_FORMAT_BGRX8888,
108 DRM_FORMAT_BGRA8888,
109 DRM_FORMAT_ABGR8888,
110 DRM_FORMAT_XBGR8888,
111 DRM_FORMAT_RGB888,
112 DRM_FORMAT_BGR888,
113 DRM_FORMAT_RGB565,
114 DRM_FORMAT_UYVY,
115 DRM_FORMAT_YUYV,
116};
117
118static const u32 mt8195_formats[] = {
119 DRM_FORMAT_XRGB8888,
120 DRM_FORMAT_ARGB8888,
121 DRM_FORMAT_XRGB2101010,
122 DRM_FORMAT_ARGB2101010,
123 DRM_FORMAT_BGRX8888,
124 DRM_FORMAT_BGRA8888,
125 DRM_FORMAT_BGRX1010102,
126 DRM_FORMAT_BGRA1010102,
127 DRM_FORMAT_ABGR8888,
128 DRM_FORMAT_XBGR8888,
129 DRM_FORMAT_XBGR2101010,
130 DRM_FORMAT_ABGR2101010,
131 DRM_FORMAT_RGBX8888,
132 DRM_FORMAT_RGBA8888,
133 DRM_FORMAT_RGBX1010102,
134 DRM_FORMAT_RGBA1010102,
135 DRM_FORMAT_RGB888,
136 DRM_FORMAT_BGR888,
137 DRM_FORMAT_RGB565,
138 DRM_FORMAT_UYVY,
139 DRM_FORMAT_YUYV,
140};
141
142struct mtk_disp_ovl_data {
143 unsigned int addr;
144 unsigned int gmc_bits;
145 unsigned int layer_nr;
146 bool fmt_rgb565_is_0;
147 bool smi_id_en;
148 bool supports_afbc;
149 const u32 blend_modes;
150 const u32 *formats;
151 size_t num_formats;
152 bool supports_clrfmt_ext;
153};
154
155/*
156 * struct mtk_disp_ovl - DISP_OVL driver structure
157 * @crtc: associated crtc to report vblank events to
158 * @data: platform data
159 */
160struct mtk_disp_ovl {
161 struct drm_crtc *crtc;
162 struct clk *clk;
163 void __iomem *regs;
164 struct cmdq_client_reg cmdq_reg;
165 const struct mtk_disp_ovl_data *data;
166 void (*vblank_cb)(void *data);
167 void *vblank_cb_data;
168};
169
170static irqreturn_t mtk_disp_ovl_irq_handler(int irq, void *dev_id)
171{
172 struct mtk_disp_ovl *priv = dev_id;
173
174 /* Clear frame completion interrupt */
175 writel(0x0, priv->regs + DISP_REG_OVL_INTSTA);
176
177 if (!priv->vblank_cb)
178 return IRQ_NONE;
179
180 priv->vblank_cb(priv->vblank_cb_data);
181
182 return IRQ_HANDLED;
183}
184
185void mtk_ovl_register_vblank_cb(struct device *dev,
186 void (*vblank_cb)(void *),
187 void *vblank_cb_data)
188{
189 struct mtk_disp_ovl *ovl = dev_get_drvdata(dev);
190
191 ovl->vblank_cb = vblank_cb;
192 ovl->vblank_cb_data = vblank_cb_data;
193}
194
195void mtk_ovl_unregister_vblank_cb(struct device *dev)
196{
197 struct mtk_disp_ovl *ovl = dev_get_drvdata(dev);
198
199 ovl->vblank_cb = NULL;
200 ovl->vblank_cb_data = NULL;
201}
202
203void mtk_ovl_enable_vblank(struct device *dev)
204{
205 struct mtk_disp_ovl *ovl = dev_get_drvdata(dev);
206
207 writel(0x0, ovl->regs + DISP_REG_OVL_INTSTA);
208 writel_relaxed(OVL_FME_CPL_INT, ovl->regs + DISP_REG_OVL_INTEN);
209}
210
211void mtk_ovl_disable_vblank(struct device *dev)
212{
213 struct mtk_disp_ovl *ovl = dev_get_drvdata(dev);
214
215 writel_relaxed(0x0, ovl->regs + DISP_REG_OVL_INTEN);
216}
217
218u32 mtk_ovl_get_blend_modes(struct device *dev)
219{
220 struct mtk_disp_ovl *ovl = dev_get_drvdata(dev);
221
222 return ovl->data->blend_modes;
223}
224
225const u32 *mtk_ovl_get_formats(struct device *dev)
226{
227 struct mtk_disp_ovl *ovl = dev_get_drvdata(dev);
228
229 return ovl->data->formats;
230}
231
232size_t mtk_ovl_get_num_formats(struct device *dev)
233{
234 struct mtk_disp_ovl *ovl = dev_get_drvdata(dev);
235
236 return ovl->data->num_formats;
237}
238
239int mtk_ovl_clk_enable(struct device *dev)
240{
241 struct mtk_disp_ovl *ovl = dev_get_drvdata(dev);
242
243 return clk_prepare_enable(ovl->clk);
244}
245
246void mtk_ovl_clk_disable(struct device *dev)
247{
248 struct mtk_disp_ovl *ovl = dev_get_drvdata(dev);
249
250 clk_disable_unprepare(ovl->clk);
251}
252
253void mtk_ovl_start(struct device *dev)
254{
255 struct mtk_disp_ovl *ovl = dev_get_drvdata(dev);
256
257 if (ovl->data->smi_id_en) {
258 unsigned int reg;
259
260 reg = readl(ovl->regs + DISP_REG_OVL_DATAPATH_CON);
261 reg = reg | OVL_LAYER_SMI_ID_EN;
262 writel_relaxed(reg, ovl->regs + DISP_REG_OVL_DATAPATH_CON);
263 }
264 writel_relaxed(0x1, ovl->regs + DISP_REG_OVL_EN);
265}
266
267void mtk_ovl_stop(struct device *dev)
268{
269 struct mtk_disp_ovl *ovl = dev_get_drvdata(dev);
270
271 writel_relaxed(0x0, ovl->regs + DISP_REG_OVL_EN);
272 if (ovl->data->smi_id_en) {
273 unsigned int reg;
274
275 reg = readl(ovl->regs + DISP_REG_OVL_DATAPATH_CON);
276 reg = reg & ~OVL_LAYER_SMI_ID_EN;
277 writel_relaxed(reg, ovl->regs + DISP_REG_OVL_DATAPATH_CON);
278 }
279}
280
281static void mtk_ovl_set_afbc(struct mtk_disp_ovl *ovl, struct cmdq_pkt *cmdq_pkt,
282 int idx, bool enabled)
283{
284 mtk_ddp_write_mask(cmdq_pkt, enabled ? OVL_LAYER_AFBC_EN(idx) : 0,
285 &ovl->cmdq_reg, ovl->regs,
286 DISP_REG_OVL_DATAPATH_CON, OVL_LAYER_AFBC_EN(idx));
287}
288
289static void mtk_ovl_set_bit_depth(struct device *dev, int idx, u32 format,
290 struct cmdq_pkt *cmdq_pkt)
291{
292 struct mtk_disp_ovl *ovl = dev_get_drvdata(dev);
293 unsigned int bit_depth = OVL_CON_CLRFMT_8_BIT;
294
295 if (!ovl->data->supports_clrfmt_ext)
296 return;
297
298 if (is_10bit_rgb(format))
299 bit_depth = OVL_CON_CLRFMT_10_BIT;
300
301 mtk_ddp_write_mask(cmdq_pkt, OVL_CON_CLRFMT_BIT_DEPTH(bit_depth, idx),
302 &ovl->cmdq_reg, ovl->regs, DISP_REG_OVL_CLRFMT_EXT,
303 OVL_CON_CLRFMT_BIT_DEPTH_MASK(idx));
304}
305
306void mtk_ovl_config(struct device *dev, unsigned int w,
307 unsigned int h, unsigned int vrefresh,
308 unsigned int bpc, struct cmdq_pkt *cmdq_pkt)
309{
310 struct mtk_disp_ovl *ovl = dev_get_drvdata(dev);
311
312 if (w != 0 && h != 0)
313 mtk_ddp_write_relaxed(cmdq_pkt, h << 16 | w, &ovl->cmdq_reg, ovl->regs,
314 DISP_REG_OVL_ROI_SIZE);
315
316 /*
317 * The background color must be opaque black (ARGB),
318 * otherwise the alpha blending will have no effect
319 */
320 mtk_ddp_write_relaxed(cmdq_pkt, OVL_COLOR_ALPHA, &ovl->cmdq_reg,
321 ovl->regs, DISP_REG_OVL_ROI_BGCLR);
322
323 mtk_ddp_write(cmdq_pkt, 0x1, &ovl->cmdq_reg, ovl->regs, DISP_REG_OVL_RST);
324 mtk_ddp_write(cmdq_pkt, 0x0, &ovl->cmdq_reg, ovl->regs, DISP_REG_OVL_RST);
325}
326
327unsigned int mtk_ovl_layer_nr(struct device *dev)
328{
329 struct mtk_disp_ovl *ovl = dev_get_drvdata(dev);
330
331 return ovl->data->layer_nr;
332}
333
334unsigned int mtk_ovl_supported_rotations(struct device *dev)
335{
336 return DRM_MODE_ROTATE_0 | DRM_MODE_ROTATE_180 |
337 DRM_MODE_REFLECT_X | DRM_MODE_REFLECT_Y;
338}
339
340int mtk_ovl_layer_check(struct device *dev, unsigned int idx,
341 struct mtk_plane_state *mtk_state)
342{
343 struct drm_plane_state *state = &mtk_state->base;
344
345 /* check if any unsupported rotation is set */
346 if (state->rotation & ~mtk_ovl_supported_rotations(dev))
347 return -EINVAL;
348
349 /*
350 * TODO: Rotating/reflecting YUV buffers is not supported at this time.
351 * Only RGB[AX] variants are supported.
352 * Since DRM_MODE_ROTATE_0 means "no rotation", we should not
353 * reject layers with this property.
354 */
355 if (state->fb->format->is_yuv && (state->rotation & ~DRM_MODE_ROTATE_0))
356 return -EINVAL;
357
358 return 0;
359}
360
361void mtk_ovl_layer_on(struct device *dev, unsigned int idx,
362 struct cmdq_pkt *cmdq_pkt)
363{
364 unsigned int gmc_thrshd_l;
365 unsigned int gmc_thrshd_h;
366 unsigned int gmc_value;
367 struct mtk_disp_ovl *ovl = dev_get_drvdata(dev);
368
369 mtk_ddp_write(cmdq_pkt, 0x1, &ovl->cmdq_reg, ovl->regs,
370 DISP_REG_OVL_RDMA_CTRL(idx));
371 gmc_thrshd_l = GMC_THRESHOLD_LOW >>
372 (GMC_THRESHOLD_BITS - ovl->data->gmc_bits);
373 gmc_thrshd_h = GMC_THRESHOLD_HIGH >>
374 (GMC_THRESHOLD_BITS - ovl->data->gmc_bits);
375 if (ovl->data->gmc_bits == 10)
376 gmc_value = gmc_thrshd_h | gmc_thrshd_h << 16;
377 else
378 gmc_value = gmc_thrshd_l | gmc_thrshd_l << 8 |
379 gmc_thrshd_h << 16 | gmc_thrshd_h << 24;
380 mtk_ddp_write(cmdq_pkt, gmc_value,
381 &ovl->cmdq_reg, ovl->regs, DISP_REG_OVL_RDMA_GMC(idx));
382 mtk_ddp_write_mask(cmdq_pkt, BIT(idx), &ovl->cmdq_reg, ovl->regs,
383 DISP_REG_OVL_SRC_CON, BIT(idx));
384}
385
386void mtk_ovl_layer_off(struct device *dev, unsigned int idx,
387 struct cmdq_pkt *cmdq_pkt)
388{
389 struct mtk_disp_ovl *ovl = dev_get_drvdata(dev);
390
391 mtk_ddp_write_mask(cmdq_pkt, 0, &ovl->cmdq_reg, ovl->regs,
392 DISP_REG_OVL_SRC_CON, BIT(idx));
393 mtk_ddp_write(cmdq_pkt, 0, &ovl->cmdq_reg, ovl->regs,
394 DISP_REG_OVL_RDMA_CTRL(idx));
395}
396
397static unsigned int mtk_ovl_fmt_convert(struct mtk_disp_ovl *ovl,
398 struct mtk_plane_state *state)
399{
400 unsigned int fmt = state->pending.format;
401 unsigned int blend_mode = DRM_MODE_BLEND_COVERAGE;
402
403 /*
404 * For the platforms where OVL_CON_CLRFMT_MAN is defined in the hardware data sheet
405 * and supports premultiplied color formats, such as OVL_CON_CLRFMT_PARGB8888.
406 *
407 * Check blend_modes in the driver data to see if premultiplied mode is supported.
408 * If not, use coverage mode instead to set it to the supported color formats.
409 *
410 * Current DRM assumption is that alpha is default premultiplied, so the bitmask of
411 * blend_modes must include BIT(DRM_MODE_BLEND_PREMULTI). Otherwise, mtk_plane_init()
412 * will get an error return from drm_plane_create_blend_mode_property() and
413 * state->base.pixel_blend_mode should not be used.
414 */
415 if (ovl->data->blend_modes & BIT(DRM_MODE_BLEND_PREMULTI))
416 blend_mode = state->base.pixel_blend_mode;
417
418 switch (fmt) {
419 default:
420 case DRM_FORMAT_RGB565:
421 return OVL_CON_CLRFMT_RGB565(ovl);
422 case DRM_FORMAT_BGR565:
423 return OVL_CON_CLRFMT_RGB565(ovl) | OVL_CON_BYTE_SWAP;
424 case DRM_FORMAT_RGB888:
425 return OVL_CON_CLRFMT_RGB888(ovl);
426 case DRM_FORMAT_BGR888:
427 return OVL_CON_CLRFMT_RGB888(ovl) | OVL_CON_BYTE_SWAP;
428 case DRM_FORMAT_RGBX8888:
429 case DRM_FORMAT_RGBA8888:
430 case DRM_FORMAT_RGBX1010102:
431 case DRM_FORMAT_RGBA1010102:
432 return blend_mode == DRM_MODE_BLEND_COVERAGE ?
433 OVL_CON_CLRFMT_RGBA8888 :
434 OVL_CON_CLRFMT_PRGBA8888;
435 case DRM_FORMAT_BGRX8888:
436 case DRM_FORMAT_BGRA8888:
437 case DRM_FORMAT_BGRX1010102:
438 case DRM_FORMAT_BGRA1010102:
439 return blend_mode == DRM_MODE_BLEND_COVERAGE ?
440 OVL_CON_CLRFMT_BGRA8888 :
441 OVL_CON_CLRFMT_PBGRA8888;
442 case DRM_FORMAT_XRGB8888:
443 case DRM_FORMAT_ARGB8888:
444 case DRM_FORMAT_XRGB2101010:
445 case DRM_FORMAT_ARGB2101010:
446 return blend_mode == DRM_MODE_BLEND_COVERAGE ?
447 OVL_CON_CLRFMT_ARGB8888 :
448 OVL_CON_CLRFMT_PARGB8888;
449 case DRM_FORMAT_XBGR8888:
450 case DRM_FORMAT_ABGR8888:
451 case DRM_FORMAT_XBGR2101010:
452 case DRM_FORMAT_ABGR2101010:
453 return blend_mode == DRM_MODE_BLEND_COVERAGE ?
454 OVL_CON_CLRFMT_ABGR8888 :
455 OVL_CON_CLRFMT_PABGR8888;
456 case DRM_FORMAT_UYVY:
457 return OVL_CON_CLRFMT_UYVY | OVL_CON_MTX_YUV_TO_RGB;
458 case DRM_FORMAT_YUYV:
459 return OVL_CON_CLRFMT_YUYV | OVL_CON_MTX_YUV_TO_RGB;
460 }
461}
462
463static void mtk_ovl_afbc_layer_config(struct mtk_disp_ovl *ovl,
464 unsigned int idx,
465 struct mtk_plane_pending_state *pending,
466 struct cmdq_pkt *cmdq_pkt)
467{
468 unsigned int pitch_msb = pending->pitch >> 16;
469 unsigned int hdr_pitch = pending->hdr_pitch;
470 unsigned int hdr_addr = pending->hdr_addr;
471
472 if (pending->modifier != DRM_FORMAT_MOD_LINEAR) {
473 mtk_ddp_write_relaxed(cmdq_pkt, hdr_addr, &ovl->cmdq_reg, ovl->regs,
474 DISP_REG_OVL_HDR_ADDR(ovl, idx));
475 mtk_ddp_write_relaxed(cmdq_pkt,
476 OVL_PITCH_MSB_2ND_SUBBUF | pitch_msb,
477 &ovl->cmdq_reg, ovl->regs, DISP_REG_OVL_PITCH_MSB(idx));
478 mtk_ddp_write_relaxed(cmdq_pkt, hdr_pitch, &ovl->cmdq_reg, ovl->regs,
479 DISP_REG_OVL_HDR_PITCH(ovl, idx));
480 } else {
481 mtk_ddp_write_relaxed(cmdq_pkt, pitch_msb,
482 &ovl->cmdq_reg, ovl->regs, DISP_REG_OVL_PITCH_MSB(idx));
483 }
484}
485
486void mtk_ovl_layer_config(struct device *dev, unsigned int idx,
487 struct mtk_plane_state *state,
488 struct cmdq_pkt *cmdq_pkt)
489{
490 struct mtk_disp_ovl *ovl = dev_get_drvdata(dev);
491 struct mtk_plane_pending_state *pending = &state->pending;
492 unsigned int addr = pending->addr;
493 unsigned int pitch_lsb = pending->pitch & GENMASK(15, 0);
494 unsigned int fmt = pending->format;
495 unsigned int rotation = pending->rotation;
496 unsigned int offset = (pending->y << 16) | pending->x;
497 unsigned int src_size = (pending->height << 16) | pending->width;
498 unsigned int blend_mode = state->base.pixel_blend_mode;
499 unsigned int ignore_pixel_alpha = 0;
500 unsigned int con;
501
502 if (!pending->enable) {
503 mtk_ovl_layer_off(dev, idx, cmdq_pkt);
504 return;
505 }
506
507 con = mtk_ovl_fmt_convert(ovl, state);
508 if (state->base.fb) {
509 con |= state->base.alpha & OVL_CON_ALPHA;
510
511 /*
512 * For blend_modes supported SoCs, always enable alpha blending.
513 * For blend_modes unsupported SoCs, enable alpha blending when has_alpha is set.
514 */
515 if (blend_mode || state->base.fb->format->has_alpha)
516 con |= OVL_CON_AEN;
517
518 /*
519 * Although the alpha channel can be ignored, CONST_BLD must be enabled
520 * for XRGB format, otherwise OVL will still read the value from memory.
521 * For RGB888 related formats, whether CONST_BLD is enabled or not won't
522 * affect the result. Therefore we use !has_alpha as the condition.
523 */
524 if (blend_mode == DRM_MODE_BLEND_PIXEL_NONE || !state->base.fb->format->has_alpha)
525 ignore_pixel_alpha = OVL_CONST_BLEND;
526 }
527
528 /*
529 * Treat rotate 180 as flip x + flip y, and XOR the original rotation value
530 * to flip x + flip y to support both in the same time.
531 */
532 if (rotation & DRM_MODE_ROTATE_180)
533 rotation ^= DRM_MODE_REFLECT_X | DRM_MODE_REFLECT_Y;
534
535 if (rotation & DRM_MODE_REFLECT_Y) {
536 con |= OVL_CON_VIRT_FLIP;
537 addr += (pending->height - 1) * pending->pitch;
538 }
539
540 if (rotation & DRM_MODE_REFLECT_X) {
541 con |= OVL_CON_HORZ_FLIP;
542 addr += pending->pitch - 1;
543 }
544
545 if (ovl->data->supports_afbc)
546 mtk_ovl_set_afbc(ovl, cmdq_pkt, idx,
547 pending->modifier != DRM_FORMAT_MOD_LINEAR);
548
549 mtk_ddp_write_relaxed(cmdq_pkt, con, &ovl->cmdq_reg, ovl->regs,
550 DISP_REG_OVL_CON(idx));
551 mtk_ddp_write_relaxed(cmdq_pkt, pitch_lsb | ignore_pixel_alpha,
552 &ovl->cmdq_reg, ovl->regs, DISP_REG_OVL_PITCH(idx));
553 mtk_ddp_write_relaxed(cmdq_pkt, src_size, &ovl->cmdq_reg, ovl->regs,
554 DISP_REG_OVL_SRC_SIZE(idx));
555 mtk_ddp_write_relaxed(cmdq_pkt, offset, &ovl->cmdq_reg, ovl->regs,
556 DISP_REG_OVL_OFFSET(idx));
557 mtk_ddp_write_relaxed(cmdq_pkt, addr, &ovl->cmdq_reg, ovl->regs,
558 DISP_REG_OVL_ADDR(ovl, idx));
559
560 if (ovl->data->supports_afbc)
561 mtk_ovl_afbc_layer_config(ovl, idx, pending, cmdq_pkt);
562
563 mtk_ovl_set_bit_depth(dev, idx, fmt, cmdq_pkt);
564 mtk_ovl_layer_on(dev, idx, cmdq_pkt);
565}
566
567void mtk_ovl_bgclr_in_on(struct device *dev)
568{
569 struct mtk_disp_ovl *ovl = dev_get_drvdata(dev);
570 unsigned int reg;
571
572 reg = readl(ovl->regs + DISP_REG_OVL_DATAPATH_CON);
573 reg = reg | OVL_BGCLR_SEL_IN;
574 writel(reg, ovl->regs + DISP_REG_OVL_DATAPATH_CON);
575}
576
577void mtk_ovl_bgclr_in_off(struct device *dev)
578{
579 struct mtk_disp_ovl *ovl = dev_get_drvdata(dev);
580 unsigned int reg;
581
582 reg = readl(ovl->regs + DISP_REG_OVL_DATAPATH_CON);
583 reg = reg & ~OVL_BGCLR_SEL_IN;
584 writel(reg, ovl->regs + DISP_REG_OVL_DATAPATH_CON);
585}
586
587static int mtk_disp_ovl_bind(struct device *dev, struct device *master,
588 void *data)
589{
590 return 0;
591}
592
593static void mtk_disp_ovl_unbind(struct device *dev, struct device *master,
594 void *data)
595{
596}
597
598static const struct component_ops mtk_disp_ovl_component_ops = {
599 .bind = mtk_disp_ovl_bind,
600 .unbind = mtk_disp_ovl_unbind,
601};
602
603static int mtk_disp_ovl_probe(struct platform_device *pdev)
604{
605 struct device *dev = &pdev->dev;
606 struct mtk_disp_ovl *priv;
607 struct resource *res;
608 int irq;
609 int ret;
610
611 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
612 if (!priv)
613 return -ENOMEM;
614
615 irq = platform_get_irq(pdev, 0);
616 if (irq < 0)
617 return irq;
618
619 priv->clk = devm_clk_get(dev, NULL);
620 if (IS_ERR(priv->clk))
621 return dev_err_probe(dev, PTR_ERR(priv->clk),
622 "failed to get ovl clk\n");
623
624 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
625 priv->regs = devm_ioremap_resource(dev, res);
626 if (IS_ERR(priv->regs))
627 return dev_err_probe(dev, PTR_ERR(priv->regs),
628 "failed to ioremap ovl\n");
629#if IS_REACHABLE(CONFIG_MTK_CMDQ)
630 ret = cmdq_dev_get_client_reg(dev, &priv->cmdq_reg, 0);
631 if (ret)
632 dev_dbg(dev, "get mediatek,gce-client-reg fail!\n");
633#endif
634
635 priv->data = of_device_get_match_data(dev);
636 platform_set_drvdata(pdev, priv);
637
638 ret = devm_request_irq(dev, irq, mtk_disp_ovl_irq_handler,
639 IRQF_TRIGGER_NONE, dev_name(dev), priv);
640 if (ret < 0)
641 return dev_err_probe(dev, ret, "Failed to request irq %d\n", irq);
642
643 pm_runtime_enable(dev);
644
645 ret = component_add(dev, &mtk_disp_ovl_component_ops);
646 if (ret) {
647 pm_runtime_disable(dev);
648 return dev_err_probe(dev, ret, "Failed to add component\n");
649 }
650
651 return 0;
652}
653
654static void mtk_disp_ovl_remove(struct platform_device *pdev)
655{
656 component_del(&pdev->dev, &mtk_disp_ovl_component_ops);
657 pm_runtime_disable(&pdev->dev);
658}
659
660static const struct mtk_disp_ovl_data mt2701_ovl_driver_data = {
661 .addr = DISP_REG_OVL_ADDR_MT2701,
662 .gmc_bits = 8,
663 .layer_nr = 4,
664 .fmt_rgb565_is_0 = false,
665 .formats = mt8173_formats,
666 .num_formats = ARRAY_SIZE(mt8173_formats),
667};
668
669static const struct mtk_disp_ovl_data mt8173_ovl_driver_data = {
670 .addr = DISP_REG_OVL_ADDR_MT8173,
671 .gmc_bits = 8,
672 .layer_nr = 4,
673 .fmt_rgb565_is_0 = true,
674 .formats = mt8173_formats,
675 .num_formats = ARRAY_SIZE(mt8173_formats),
676};
677
678static const struct mtk_disp_ovl_data mt8183_ovl_driver_data = {
679 .addr = DISP_REG_OVL_ADDR_MT8173,
680 .gmc_bits = 10,
681 .layer_nr = 4,
682 .fmt_rgb565_is_0 = true,
683 .formats = mt8173_formats,
684 .num_formats = ARRAY_SIZE(mt8173_formats),
685};
686
687static const struct mtk_disp_ovl_data mt8183_ovl_2l_driver_data = {
688 .addr = DISP_REG_OVL_ADDR_MT8173,
689 .gmc_bits = 10,
690 .layer_nr = 2,
691 .fmt_rgb565_is_0 = true,
692 .formats = mt8173_formats,
693 .num_formats = ARRAY_SIZE(mt8173_formats),
694};
695
696static const struct mtk_disp_ovl_data mt8192_ovl_driver_data = {
697 .addr = DISP_REG_OVL_ADDR_MT8173,
698 .gmc_bits = 10,
699 .layer_nr = 4,
700 .fmt_rgb565_is_0 = true,
701 .smi_id_en = true,
702 .blend_modes = BIT(DRM_MODE_BLEND_PREMULTI) |
703 BIT(DRM_MODE_BLEND_COVERAGE) |
704 BIT(DRM_MODE_BLEND_PIXEL_NONE),
705 .formats = mt8173_formats,
706 .num_formats = ARRAY_SIZE(mt8173_formats),
707};
708
709static const struct mtk_disp_ovl_data mt8192_ovl_2l_driver_data = {
710 .addr = DISP_REG_OVL_ADDR_MT8173,
711 .gmc_bits = 10,
712 .layer_nr = 2,
713 .fmt_rgb565_is_0 = true,
714 .smi_id_en = true,
715 .blend_modes = BIT(DRM_MODE_BLEND_PREMULTI) |
716 BIT(DRM_MODE_BLEND_COVERAGE) |
717 BIT(DRM_MODE_BLEND_PIXEL_NONE),
718 .formats = mt8173_formats,
719 .num_formats = ARRAY_SIZE(mt8173_formats),
720};
721
722static const struct mtk_disp_ovl_data mt8195_ovl_driver_data = {
723 .addr = DISP_REG_OVL_ADDR_MT8173,
724 .gmc_bits = 10,
725 .layer_nr = 4,
726 .fmt_rgb565_is_0 = true,
727 .smi_id_en = true,
728 .supports_afbc = true,
729 .blend_modes = BIT(DRM_MODE_BLEND_PREMULTI) |
730 BIT(DRM_MODE_BLEND_COVERAGE) |
731 BIT(DRM_MODE_BLEND_PIXEL_NONE),
732 .formats = mt8195_formats,
733 .num_formats = ARRAY_SIZE(mt8195_formats),
734 .supports_clrfmt_ext = true,
735};
736
737static const struct of_device_id mtk_disp_ovl_driver_dt_match[] = {
738 { .compatible = "mediatek,mt2701-disp-ovl",
739 .data = &mt2701_ovl_driver_data},
740 { .compatible = "mediatek,mt8173-disp-ovl",
741 .data = &mt8173_ovl_driver_data},
742 { .compatible = "mediatek,mt8183-disp-ovl",
743 .data = &mt8183_ovl_driver_data},
744 { .compatible = "mediatek,mt8183-disp-ovl-2l",
745 .data = &mt8183_ovl_2l_driver_data},
746 { .compatible = "mediatek,mt8192-disp-ovl",
747 .data = &mt8192_ovl_driver_data},
748 { .compatible = "mediatek,mt8192-disp-ovl-2l",
749 .data = &mt8192_ovl_2l_driver_data},
750 { .compatible = "mediatek,mt8195-disp-ovl",
751 .data = &mt8195_ovl_driver_data},
752 {},
753};
754MODULE_DEVICE_TABLE(of, mtk_disp_ovl_driver_dt_match);
755
756struct platform_driver mtk_disp_ovl_driver = {
757 .probe = mtk_disp_ovl_probe,
758 .remove = mtk_disp_ovl_remove,
759 .driver = {
760 .name = "mediatek-disp-ovl",
761 .of_match_table = mtk_disp_ovl_driver_dt_match,
762 },
763};
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Copyright (c) 2015 MediaTek Inc.
4 */
5
6#include <drm/drm_blend.h>
7#include <drm/drm_fourcc.h>
8#include <drm/drm_framebuffer.h>
9
10#include <linux/clk.h>
11#include <linux/component.h>
12#include <linux/module.h>
13#include <linux/of.h>
14#include <linux/platform_device.h>
15#include <linux/pm_runtime.h>
16#include <linux/soc/mediatek/mtk-cmdq.h>
17
18#include "mtk_disp_drv.h"
19#include "mtk_drm_crtc.h"
20#include "mtk_drm_ddp_comp.h"
21#include "mtk_drm_drv.h"
22
23#define DISP_REG_OVL_INTEN 0x0004
24#define OVL_FME_CPL_INT BIT(1)
25#define DISP_REG_OVL_INTSTA 0x0008
26#define DISP_REG_OVL_EN 0x000c
27#define DISP_REG_OVL_RST 0x0014
28#define DISP_REG_OVL_ROI_SIZE 0x0020
29#define DISP_REG_OVL_DATAPATH_CON 0x0024
30#define OVL_LAYER_SMI_ID_EN BIT(0)
31#define OVL_BGCLR_SEL_IN BIT(2)
32#define OVL_LAYER_AFBC_EN(n) BIT(4+n)
33#define DISP_REG_OVL_ROI_BGCLR 0x0028
34#define DISP_REG_OVL_SRC_CON 0x002c
35#define DISP_REG_OVL_CON(n) (0x0030 + 0x20 * (n))
36#define DISP_REG_OVL_SRC_SIZE(n) (0x0038 + 0x20 * (n))
37#define DISP_REG_OVL_OFFSET(n) (0x003c + 0x20 * (n))
38#define DISP_REG_OVL_PITCH_MSB(n) (0x0040 + 0x20 * (n))
39#define OVL_PITCH_MSB_2ND_SUBBUF BIT(16)
40#define DISP_REG_OVL_PITCH(n) (0x0044 + 0x20 * (n))
41#define DISP_REG_OVL_RDMA_CTRL(n) (0x00c0 + 0x20 * (n))
42#define DISP_REG_OVL_RDMA_GMC(n) (0x00c8 + 0x20 * (n))
43#define DISP_REG_OVL_ADDR_MT2701 0x0040
44#define DISP_REG_OVL_CLRFMT_EXT 0x02D0
45#define DISP_REG_OVL_ADDR_MT8173 0x0f40
46#define DISP_REG_OVL_ADDR(ovl, n) ((ovl)->data->addr + 0x20 * (n))
47#define DISP_REG_OVL_HDR_ADDR(ovl, n) ((ovl)->data->addr + 0x20 * (n) + 0x04)
48#define DISP_REG_OVL_HDR_PITCH(ovl, n) ((ovl)->data->addr + 0x20 * (n) + 0x08)
49
50#define GMC_THRESHOLD_BITS 16
51#define GMC_THRESHOLD_HIGH ((1 << GMC_THRESHOLD_BITS) / 4)
52#define GMC_THRESHOLD_LOW ((1 << GMC_THRESHOLD_BITS) / 8)
53
54#define OVL_CON_BYTE_SWAP BIT(24)
55#define OVL_CON_MTX_YUV_TO_RGB (6 << 16)
56#define OVL_CON_CLRFMT_RGB (1 << 12)
57#define OVL_CON_CLRFMT_RGBA8888 (2 << 12)
58#define OVL_CON_CLRFMT_ARGB8888 (3 << 12)
59#define OVL_CON_CLRFMT_UYVY (4 << 12)
60#define OVL_CON_CLRFMT_YUYV (5 << 12)
61#define OVL_CON_CLRFMT_RGB565(ovl) ((ovl)->data->fmt_rgb565_is_0 ? \
62 0 : OVL_CON_CLRFMT_RGB)
63#define OVL_CON_CLRFMT_RGB888(ovl) ((ovl)->data->fmt_rgb565_is_0 ? \
64 OVL_CON_CLRFMT_RGB : 0)
65#define OVL_CON_CLRFMT_BIT_DEPTH_MASK(ovl) (0xFF << 4 * (ovl))
66#define OVL_CON_CLRFMT_BIT_DEPTH(depth, ovl) (depth << 4 * (ovl))
67#define OVL_CON_CLRFMT_8_BIT 0x00
68#define OVL_CON_CLRFMT_10_BIT 0x01
69#define OVL_CON_AEN BIT(8)
70#define OVL_CON_ALPHA 0xff
71#define OVL_CON_VIRT_FLIP BIT(9)
72#define OVL_CON_HORZ_FLIP BIT(10)
73
74static const u32 mt8173_formats[] = {
75 DRM_FORMAT_XRGB8888,
76 DRM_FORMAT_ARGB8888,
77 DRM_FORMAT_BGRX8888,
78 DRM_FORMAT_BGRA8888,
79 DRM_FORMAT_ABGR8888,
80 DRM_FORMAT_XBGR8888,
81 DRM_FORMAT_RGB888,
82 DRM_FORMAT_BGR888,
83 DRM_FORMAT_RGB565,
84 DRM_FORMAT_UYVY,
85 DRM_FORMAT_YUYV,
86};
87
88static const u32 mt8195_formats[] = {
89 DRM_FORMAT_XRGB8888,
90 DRM_FORMAT_ARGB8888,
91 DRM_FORMAT_ARGB2101010,
92 DRM_FORMAT_BGRX8888,
93 DRM_FORMAT_BGRA8888,
94 DRM_FORMAT_BGRA1010102,
95 DRM_FORMAT_ABGR8888,
96 DRM_FORMAT_XBGR8888,
97 DRM_FORMAT_RGB888,
98 DRM_FORMAT_BGR888,
99 DRM_FORMAT_RGB565,
100 DRM_FORMAT_UYVY,
101 DRM_FORMAT_YUYV,
102};
103
104struct mtk_disp_ovl_data {
105 unsigned int addr;
106 unsigned int gmc_bits;
107 unsigned int layer_nr;
108 bool fmt_rgb565_is_0;
109 bool smi_id_en;
110 bool supports_afbc;
111 const u32 *formats;
112 size_t num_formats;
113 bool supports_clrfmt_ext;
114};
115
116/*
117 * struct mtk_disp_ovl - DISP_OVL driver structure
118 * @crtc: associated crtc to report vblank events to
119 * @data: platform data
120 */
121struct mtk_disp_ovl {
122 struct drm_crtc *crtc;
123 struct clk *clk;
124 void __iomem *regs;
125 struct cmdq_client_reg cmdq_reg;
126 const struct mtk_disp_ovl_data *data;
127 void (*vblank_cb)(void *data);
128 void *vblank_cb_data;
129};
130
131static irqreturn_t mtk_disp_ovl_irq_handler(int irq, void *dev_id)
132{
133 struct mtk_disp_ovl *priv = dev_id;
134
135 /* Clear frame completion interrupt */
136 writel(0x0, priv->regs + DISP_REG_OVL_INTSTA);
137
138 if (!priv->vblank_cb)
139 return IRQ_NONE;
140
141 priv->vblank_cb(priv->vblank_cb_data);
142
143 return IRQ_HANDLED;
144}
145
146void mtk_ovl_register_vblank_cb(struct device *dev,
147 void (*vblank_cb)(void *),
148 void *vblank_cb_data)
149{
150 struct mtk_disp_ovl *ovl = dev_get_drvdata(dev);
151
152 ovl->vblank_cb = vblank_cb;
153 ovl->vblank_cb_data = vblank_cb_data;
154}
155
156void mtk_ovl_unregister_vblank_cb(struct device *dev)
157{
158 struct mtk_disp_ovl *ovl = dev_get_drvdata(dev);
159
160 ovl->vblank_cb = NULL;
161 ovl->vblank_cb_data = NULL;
162}
163
164void mtk_ovl_enable_vblank(struct device *dev)
165{
166 struct mtk_disp_ovl *ovl = dev_get_drvdata(dev);
167
168 writel(0x0, ovl->regs + DISP_REG_OVL_INTSTA);
169 writel_relaxed(OVL_FME_CPL_INT, ovl->regs + DISP_REG_OVL_INTEN);
170}
171
172void mtk_ovl_disable_vblank(struct device *dev)
173{
174 struct mtk_disp_ovl *ovl = dev_get_drvdata(dev);
175
176 writel_relaxed(0x0, ovl->regs + DISP_REG_OVL_INTEN);
177}
178
179const u32 *mtk_ovl_get_formats(struct device *dev)
180{
181 struct mtk_disp_ovl *ovl = dev_get_drvdata(dev);
182
183 return ovl->data->formats;
184}
185
186size_t mtk_ovl_get_num_formats(struct device *dev)
187{
188 struct mtk_disp_ovl *ovl = dev_get_drvdata(dev);
189
190 return ovl->data->num_formats;
191}
192
193int mtk_ovl_clk_enable(struct device *dev)
194{
195 struct mtk_disp_ovl *ovl = dev_get_drvdata(dev);
196
197 return clk_prepare_enable(ovl->clk);
198}
199
200void mtk_ovl_clk_disable(struct device *dev)
201{
202 struct mtk_disp_ovl *ovl = dev_get_drvdata(dev);
203
204 clk_disable_unprepare(ovl->clk);
205}
206
207void mtk_ovl_start(struct device *dev)
208{
209 struct mtk_disp_ovl *ovl = dev_get_drvdata(dev);
210
211 if (ovl->data->smi_id_en) {
212 unsigned int reg;
213
214 reg = readl(ovl->regs + DISP_REG_OVL_DATAPATH_CON);
215 reg = reg | OVL_LAYER_SMI_ID_EN;
216 writel_relaxed(reg, ovl->regs + DISP_REG_OVL_DATAPATH_CON);
217 }
218 writel_relaxed(0x1, ovl->regs + DISP_REG_OVL_EN);
219}
220
221void mtk_ovl_stop(struct device *dev)
222{
223 struct mtk_disp_ovl *ovl = dev_get_drvdata(dev);
224
225 writel_relaxed(0x0, ovl->regs + DISP_REG_OVL_EN);
226 if (ovl->data->smi_id_en) {
227 unsigned int reg;
228
229 reg = readl(ovl->regs + DISP_REG_OVL_DATAPATH_CON);
230 reg = reg & ~OVL_LAYER_SMI_ID_EN;
231 writel_relaxed(reg, ovl->regs + DISP_REG_OVL_DATAPATH_CON);
232 }
233}
234
235static void mtk_ovl_set_afbc(struct mtk_disp_ovl *ovl, struct cmdq_pkt *cmdq_pkt,
236 int idx, bool enabled)
237{
238 mtk_ddp_write_mask(cmdq_pkt, enabled ? OVL_LAYER_AFBC_EN(idx) : 0,
239 &ovl->cmdq_reg, ovl->regs,
240 DISP_REG_OVL_DATAPATH_CON, OVL_LAYER_AFBC_EN(idx));
241}
242
243static void mtk_ovl_set_bit_depth(struct device *dev, int idx, u32 format,
244 struct cmdq_pkt *cmdq_pkt)
245{
246 struct mtk_disp_ovl *ovl = dev_get_drvdata(dev);
247 unsigned int reg;
248 unsigned int bit_depth = OVL_CON_CLRFMT_8_BIT;
249
250 if (!ovl->data->supports_clrfmt_ext)
251 return;
252
253 reg = readl(ovl->regs + DISP_REG_OVL_CLRFMT_EXT);
254 reg &= ~OVL_CON_CLRFMT_BIT_DEPTH_MASK(idx);
255
256 if (format == DRM_FORMAT_RGBA1010102 ||
257 format == DRM_FORMAT_BGRA1010102 ||
258 format == DRM_FORMAT_ARGB2101010)
259 bit_depth = OVL_CON_CLRFMT_10_BIT;
260
261 reg |= OVL_CON_CLRFMT_BIT_DEPTH(bit_depth, idx);
262
263 mtk_ddp_write(cmdq_pkt, reg, &ovl->cmdq_reg,
264 ovl->regs, DISP_REG_OVL_CLRFMT_EXT);
265}
266
267void mtk_ovl_config(struct device *dev, unsigned int w,
268 unsigned int h, unsigned int vrefresh,
269 unsigned int bpc, struct cmdq_pkt *cmdq_pkt)
270{
271 struct mtk_disp_ovl *ovl = dev_get_drvdata(dev);
272
273 if (w != 0 && h != 0)
274 mtk_ddp_write_relaxed(cmdq_pkt, h << 16 | w, &ovl->cmdq_reg, ovl->regs,
275 DISP_REG_OVL_ROI_SIZE);
276 mtk_ddp_write_relaxed(cmdq_pkt, 0x0, &ovl->cmdq_reg, ovl->regs, DISP_REG_OVL_ROI_BGCLR);
277
278 mtk_ddp_write(cmdq_pkt, 0x1, &ovl->cmdq_reg, ovl->regs, DISP_REG_OVL_RST);
279 mtk_ddp_write(cmdq_pkt, 0x0, &ovl->cmdq_reg, ovl->regs, DISP_REG_OVL_RST);
280}
281
282unsigned int mtk_ovl_layer_nr(struct device *dev)
283{
284 struct mtk_disp_ovl *ovl = dev_get_drvdata(dev);
285
286 return ovl->data->layer_nr;
287}
288
289unsigned int mtk_ovl_supported_rotations(struct device *dev)
290{
291 return DRM_MODE_ROTATE_0 | DRM_MODE_ROTATE_180 |
292 DRM_MODE_REFLECT_X | DRM_MODE_REFLECT_Y;
293}
294
295int mtk_ovl_layer_check(struct device *dev, unsigned int idx,
296 struct mtk_plane_state *mtk_state)
297{
298 struct drm_plane_state *state = &mtk_state->base;
299 unsigned int rotation = 0;
300
301 rotation = drm_rotation_simplify(state->rotation,
302 DRM_MODE_ROTATE_0 |
303 DRM_MODE_REFLECT_X |
304 DRM_MODE_REFLECT_Y);
305 rotation &= ~DRM_MODE_ROTATE_0;
306
307 /* We can only do reflection, not rotation */
308 if ((rotation & DRM_MODE_ROTATE_MASK) != 0)
309 return -EINVAL;
310
311 /*
312 * TODO: Rotating/reflecting YUV buffers is not supported at this time.
313 * Only RGB[AX] variants are supported.
314 */
315 if (state->fb->format->is_yuv && rotation != 0)
316 return -EINVAL;
317
318 state->rotation = rotation;
319
320 return 0;
321}
322
323void mtk_ovl_layer_on(struct device *dev, unsigned int idx,
324 struct cmdq_pkt *cmdq_pkt)
325{
326 unsigned int gmc_thrshd_l;
327 unsigned int gmc_thrshd_h;
328 unsigned int gmc_value;
329 struct mtk_disp_ovl *ovl = dev_get_drvdata(dev);
330
331 mtk_ddp_write(cmdq_pkt, 0x1, &ovl->cmdq_reg, ovl->regs,
332 DISP_REG_OVL_RDMA_CTRL(idx));
333 gmc_thrshd_l = GMC_THRESHOLD_LOW >>
334 (GMC_THRESHOLD_BITS - ovl->data->gmc_bits);
335 gmc_thrshd_h = GMC_THRESHOLD_HIGH >>
336 (GMC_THRESHOLD_BITS - ovl->data->gmc_bits);
337 if (ovl->data->gmc_bits == 10)
338 gmc_value = gmc_thrshd_h | gmc_thrshd_h << 16;
339 else
340 gmc_value = gmc_thrshd_l | gmc_thrshd_l << 8 |
341 gmc_thrshd_h << 16 | gmc_thrshd_h << 24;
342 mtk_ddp_write(cmdq_pkt, gmc_value,
343 &ovl->cmdq_reg, ovl->regs, DISP_REG_OVL_RDMA_GMC(idx));
344 mtk_ddp_write_mask(cmdq_pkt, BIT(idx), &ovl->cmdq_reg, ovl->regs,
345 DISP_REG_OVL_SRC_CON, BIT(idx));
346}
347
348void mtk_ovl_layer_off(struct device *dev, unsigned int idx,
349 struct cmdq_pkt *cmdq_pkt)
350{
351 struct mtk_disp_ovl *ovl = dev_get_drvdata(dev);
352
353 mtk_ddp_write_mask(cmdq_pkt, 0, &ovl->cmdq_reg, ovl->regs,
354 DISP_REG_OVL_SRC_CON, BIT(idx));
355 mtk_ddp_write(cmdq_pkt, 0, &ovl->cmdq_reg, ovl->regs,
356 DISP_REG_OVL_RDMA_CTRL(idx));
357}
358
359static unsigned int ovl_fmt_convert(struct mtk_disp_ovl *ovl, unsigned int fmt)
360{
361 /* The return value in switch "MEM_MODE_INPUT_FORMAT_XXX"
362 * is defined in mediatek HW data sheet.
363 * The alphabet order in XXX is no relation to data
364 * arrangement in memory.
365 */
366 switch (fmt) {
367 default:
368 case DRM_FORMAT_RGB565:
369 return OVL_CON_CLRFMT_RGB565(ovl);
370 case DRM_FORMAT_BGR565:
371 return OVL_CON_CLRFMT_RGB565(ovl) | OVL_CON_BYTE_SWAP;
372 case DRM_FORMAT_RGB888:
373 return OVL_CON_CLRFMT_RGB888(ovl);
374 case DRM_FORMAT_BGR888:
375 return OVL_CON_CLRFMT_RGB888(ovl) | OVL_CON_BYTE_SWAP;
376 case DRM_FORMAT_RGBX8888:
377 case DRM_FORMAT_RGBA8888:
378 return OVL_CON_CLRFMT_ARGB8888;
379 case DRM_FORMAT_BGRX8888:
380 case DRM_FORMAT_BGRA8888:
381 case DRM_FORMAT_BGRA1010102:
382 return OVL_CON_CLRFMT_ARGB8888 | OVL_CON_BYTE_SWAP;
383 case DRM_FORMAT_XRGB8888:
384 case DRM_FORMAT_ARGB8888:
385 case DRM_FORMAT_ARGB2101010:
386 return OVL_CON_CLRFMT_RGBA8888;
387 case DRM_FORMAT_XBGR8888:
388 case DRM_FORMAT_ABGR8888:
389 return OVL_CON_CLRFMT_RGBA8888 | OVL_CON_BYTE_SWAP;
390 case DRM_FORMAT_UYVY:
391 return OVL_CON_CLRFMT_UYVY | OVL_CON_MTX_YUV_TO_RGB;
392 case DRM_FORMAT_YUYV:
393 return OVL_CON_CLRFMT_YUYV | OVL_CON_MTX_YUV_TO_RGB;
394 }
395}
396
397void mtk_ovl_layer_config(struct device *dev, unsigned int idx,
398 struct mtk_plane_state *state,
399 struct cmdq_pkt *cmdq_pkt)
400{
401 struct mtk_disp_ovl *ovl = dev_get_drvdata(dev);
402 struct mtk_plane_pending_state *pending = &state->pending;
403 unsigned int addr = pending->addr;
404 unsigned int hdr_addr = pending->hdr_addr;
405 unsigned int pitch = pending->pitch;
406 unsigned int hdr_pitch = pending->hdr_pitch;
407 unsigned int fmt = pending->format;
408 unsigned int offset = (pending->y << 16) | pending->x;
409 unsigned int src_size = (pending->height << 16) | pending->width;
410 unsigned int con;
411 bool is_afbc = pending->modifier != DRM_FORMAT_MOD_LINEAR;
412 union overlay_pitch {
413 struct split_pitch {
414 u16 lsb;
415 u16 msb;
416 } split_pitch;
417 u32 pitch;
418 } overlay_pitch;
419
420 overlay_pitch.pitch = pitch;
421
422 if (!pending->enable) {
423 mtk_ovl_layer_off(dev, idx, cmdq_pkt);
424 return;
425 }
426
427 con = ovl_fmt_convert(ovl, fmt);
428 if (state->base.fb && state->base.fb->format->has_alpha)
429 con |= OVL_CON_AEN | OVL_CON_ALPHA;
430
431 if (pending->rotation & DRM_MODE_REFLECT_Y) {
432 con |= OVL_CON_VIRT_FLIP;
433 addr += (pending->height - 1) * pending->pitch;
434 }
435
436 if (pending->rotation & DRM_MODE_REFLECT_X) {
437 con |= OVL_CON_HORZ_FLIP;
438 addr += pending->pitch - 1;
439 }
440
441 if (ovl->data->supports_afbc)
442 mtk_ovl_set_afbc(ovl, cmdq_pkt, idx, is_afbc);
443
444 mtk_ddp_write_relaxed(cmdq_pkt, con, &ovl->cmdq_reg, ovl->regs,
445 DISP_REG_OVL_CON(idx));
446 mtk_ddp_write_relaxed(cmdq_pkt, overlay_pitch.split_pitch.lsb, &ovl->cmdq_reg, ovl->regs,
447 DISP_REG_OVL_PITCH(idx));
448 mtk_ddp_write_relaxed(cmdq_pkt, src_size, &ovl->cmdq_reg, ovl->regs,
449 DISP_REG_OVL_SRC_SIZE(idx));
450 mtk_ddp_write_relaxed(cmdq_pkt, offset, &ovl->cmdq_reg, ovl->regs,
451 DISP_REG_OVL_OFFSET(idx));
452 mtk_ddp_write_relaxed(cmdq_pkt, addr, &ovl->cmdq_reg, ovl->regs,
453 DISP_REG_OVL_ADDR(ovl, idx));
454
455 if (is_afbc) {
456 mtk_ddp_write_relaxed(cmdq_pkt, hdr_addr, &ovl->cmdq_reg, ovl->regs,
457 DISP_REG_OVL_HDR_ADDR(ovl, idx));
458 mtk_ddp_write_relaxed(cmdq_pkt,
459 OVL_PITCH_MSB_2ND_SUBBUF | overlay_pitch.split_pitch.msb,
460 &ovl->cmdq_reg, ovl->regs, DISP_REG_OVL_PITCH_MSB(idx));
461 mtk_ddp_write_relaxed(cmdq_pkt, hdr_pitch, &ovl->cmdq_reg, ovl->regs,
462 DISP_REG_OVL_HDR_PITCH(ovl, idx));
463 } else {
464 mtk_ddp_write_relaxed(cmdq_pkt,
465 overlay_pitch.split_pitch.msb,
466 &ovl->cmdq_reg, ovl->regs, DISP_REG_OVL_PITCH_MSB(idx));
467 }
468
469 mtk_ovl_set_bit_depth(dev, idx, fmt, cmdq_pkt);
470 mtk_ovl_layer_on(dev, idx, cmdq_pkt);
471}
472
473void mtk_ovl_bgclr_in_on(struct device *dev)
474{
475 struct mtk_disp_ovl *ovl = dev_get_drvdata(dev);
476 unsigned int reg;
477
478 reg = readl(ovl->regs + DISP_REG_OVL_DATAPATH_CON);
479 reg = reg | OVL_BGCLR_SEL_IN;
480 writel(reg, ovl->regs + DISP_REG_OVL_DATAPATH_CON);
481}
482
483void mtk_ovl_bgclr_in_off(struct device *dev)
484{
485 struct mtk_disp_ovl *ovl = dev_get_drvdata(dev);
486 unsigned int reg;
487
488 reg = readl(ovl->regs + DISP_REG_OVL_DATAPATH_CON);
489 reg = reg & ~OVL_BGCLR_SEL_IN;
490 writel(reg, ovl->regs + DISP_REG_OVL_DATAPATH_CON);
491}
492
493static int mtk_disp_ovl_bind(struct device *dev, struct device *master,
494 void *data)
495{
496 return 0;
497}
498
499static void mtk_disp_ovl_unbind(struct device *dev, struct device *master,
500 void *data)
501{
502}
503
504static const struct component_ops mtk_disp_ovl_component_ops = {
505 .bind = mtk_disp_ovl_bind,
506 .unbind = mtk_disp_ovl_unbind,
507};
508
509static int mtk_disp_ovl_probe(struct platform_device *pdev)
510{
511 struct device *dev = &pdev->dev;
512 struct mtk_disp_ovl *priv;
513 struct resource *res;
514 int irq;
515 int ret;
516
517 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
518 if (!priv)
519 return -ENOMEM;
520
521 irq = platform_get_irq(pdev, 0);
522 if (irq < 0)
523 return irq;
524
525 priv->clk = devm_clk_get(dev, NULL);
526 if (IS_ERR(priv->clk)) {
527 dev_err(dev, "failed to get ovl clk\n");
528 return PTR_ERR(priv->clk);
529 }
530
531 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
532 priv->regs = devm_ioremap_resource(dev, res);
533 if (IS_ERR(priv->regs)) {
534 dev_err(dev, "failed to ioremap ovl\n");
535 return PTR_ERR(priv->regs);
536 }
537#if IS_REACHABLE(CONFIG_MTK_CMDQ)
538 ret = cmdq_dev_get_client_reg(dev, &priv->cmdq_reg, 0);
539 if (ret)
540 dev_dbg(dev, "get mediatek,gce-client-reg fail!\n");
541#endif
542
543 priv->data = of_device_get_match_data(dev);
544 platform_set_drvdata(pdev, priv);
545
546 ret = devm_request_irq(dev, irq, mtk_disp_ovl_irq_handler,
547 IRQF_TRIGGER_NONE, dev_name(dev), priv);
548 if (ret < 0) {
549 dev_err(dev, "Failed to request irq %d: %d\n", irq, ret);
550 return ret;
551 }
552
553 pm_runtime_enable(dev);
554
555 ret = component_add(dev, &mtk_disp_ovl_component_ops);
556 if (ret) {
557 pm_runtime_disable(dev);
558 dev_err(dev, "Failed to add component: %d\n", ret);
559 }
560
561 return ret;
562}
563
564static void mtk_disp_ovl_remove(struct platform_device *pdev)
565{
566 component_del(&pdev->dev, &mtk_disp_ovl_component_ops);
567 pm_runtime_disable(&pdev->dev);
568}
569
570static const struct mtk_disp_ovl_data mt2701_ovl_driver_data = {
571 .addr = DISP_REG_OVL_ADDR_MT2701,
572 .gmc_bits = 8,
573 .layer_nr = 4,
574 .fmt_rgb565_is_0 = false,
575 .formats = mt8173_formats,
576 .num_formats = ARRAY_SIZE(mt8173_formats),
577};
578
579static const struct mtk_disp_ovl_data mt8173_ovl_driver_data = {
580 .addr = DISP_REG_OVL_ADDR_MT8173,
581 .gmc_bits = 8,
582 .layer_nr = 4,
583 .fmt_rgb565_is_0 = true,
584 .formats = mt8173_formats,
585 .num_formats = ARRAY_SIZE(mt8173_formats),
586};
587
588static const struct mtk_disp_ovl_data mt8183_ovl_driver_data = {
589 .addr = DISP_REG_OVL_ADDR_MT8173,
590 .gmc_bits = 10,
591 .layer_nr = 4,
592 .fmt_rgb565_is_0 = true,
593 .formats = mt8173_formats,
594 .num_formats = ARRAY_SIZE(mt8173_formats),
595};
596
597static const struct mtk_disp_ovl_data mt8183_ovl_2l_driver_data = {
598 .addr = DISP_REG_OVL_ADDR_MT8173,
599 .gmc_bits = 10,
600 .layer_nr = 2,
601 .fmt_rgb565_is_0 = true,
602 .formats = mt8173_formats,
603 .num_formats = ARRAY_SIZE(mt8173_formats),
604};
605
606static const struct mtk_disp_ovl_data mt8192_ovl_driver_data = {
607 .addr = DISP_REG_OVL_ADDR_MT8173,
608 .gmc_bits = 10,
609 .layer_nr = 4,
610 .fmt_rgb565_is_0 = true,
611 .smi_id_en = true,
612 .formats = mt8173_formats,
613 .num_formats = ARRAY_SIZE(mt8173_formats),
614};
615
616static const struct mtk_disp_ovl_data mt8192_ovl_2l_driver_data = {
617 .addr = DISP_REG_OVL_ADDR_MT8173,
618 .gmc_bits = 10,
619 .layer_nr = 2,
620 .fmt_rgb565_is_0 = true,
621 .smi_id_en = true,
622 .formats = mt8173_formats,
623 .num_formats = ARRAY_SIZE(mt8173_formats),
624};
625
626static const struct mtk_disp_ovl_data mt8195_ovl_driver_data = {
627 .addr = DISP_REG_OVL_ADDR_MT8173,
628 .gmc_bits = 10,
629 .layer_nr = 4,
630 .fmt_rgb565_is_0 = true,
631 .smi_id_en = true,
632 .supports_afbc = true,
633 .formats = mt8195_formats,
634 .num_formats = ARRAY_SIZE(mt8195_formats),
635 .supports_clrfmt_ext = true,
636};
637
638static const struct of_device_id mtk_disp_ovl_driver_dt_match[] = {
639 { .compatible = "mediatek,mt2701-disp-ovl",
640 .data = &mt2701_ovl_driver_data},
641 { .compatible = "mediatek,mt8173-disp-ovl",
642 .data = &mt8173_ovl_driver_data},
643 { .compatible = "mediatek,mt8183-disp-ovl",
644 .data = &mt8183_ovl_driver_data},
645 { .compatible = "mediatek,mt8183-disp-ovl-2l",
646 .data = &mt8183_ovl_2l_driver_data},
647 { .compatible = "mediatek,mt8192-disp-ovl",
648 .data = &mt8192_ovl_driver_data},
649 { .compatible = "mediatek,mt8192-disp-ovl-2l",
650 .data = &mt8192_ovl_2l_driver_data},
651 { .compatible = "mediatek,mt8195-disp-ovl",
652 .data = &mt8195_ovl_driver_data},
653 {},
654};
655MODULE_DEVICE_TABLE(of, mtk_disp_ovl_driver_dt_match);
656
657struct platform_driver mtk_disp_ovl_driver = {
658 .probe = mtk_disp_ovl_probe,
659 .remove_new = mtk_disp_ovl_remove,
660 .driver = {
661 .name = "mediatek-disp-ovl",
662 .owner = THIS_MODULE,
663 .of_match_table = mtk_disp_ovl_driver_dt_match,
664 },
665};