summaryrefslogtreecommitdiff
path: root/drivers/gpu/drm/meson/meson_viu.c
blob: 4b2b3024d37146e2e39f88051a57624a556ea098 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * Copyright (C) 2016 BayLibre, SAS
 * Author: Neil Armstrong <narmstrong@baylibre.com>
 * Copyright (C) 2015 Amlogic, Inc. All rights reserved.
 * Copyright (C) 2014 Endless Mobile
 */

#include <linux/kernel.h>
#include <linux/module.h>
#include <drm/drmP.h>
#include "meson_drv.h"
#include "meson_viu.h"
#include "meson_vpp.h"
#include "meson_venc.h"
#include "meson_registers.h"

/**
 * DOC: Video Input Unit
 *
 * VIU Handles the Pixel scanout and the basic Colorspace conversions
 * We handle the following features :
 *
 * - OSD1 RGB565/RGB888/xRGB8888 scanout
 * - RGB conversion to x/cb/cr
 * - Progressive or Interlace buffer scanout
 * - OSD1 Commit on Vsync
 * - HDR OSD matrix for GXL/GXM
 *
 * What is missing :
 *
 * - BGR888/xBGR8888/BGRx8888/BGRx8888 modes
 * - YUV4:2:2 Y0CbY1Cr scanout
 * - Conversion to YUV 4:4:4 from 4:2:2 input
 * - Colorkey Alpha matching
 * - Big endian scanout
 * - X/Y reverse scanout
 * - Global alpha setup
 * - OSD2 support, would need interlace switching on vsync
 * - OSD1 full scaling to support TV overscan
 */

/* OSD csc defines */

enum viu_matrix_sel_e {
	VIU_MATRIX_OSD_EOTF = 0,
	VIU_MATRIX_OSD,
};

enum viu_lut_sel_e {
	VIU_LUT_OSD_EOTF = 0,
	VIU_LUT_OSD_OETF,
};

#define COEFF_NORM(a) ((int)((((a) * 2048.0) + 1) / 2))
#define MATRIX_5X3_COEF_SIZE 24

#define EOTF_COEFF_NORM(a) ((int)((((a) * 4096.0) + 1) / 2))
#define EOTF_COEFF_SIZE 10
#define EOTF_COEFF_RIGHTSHIFT 1

static int RGB709_to_YUV709l_coeff[MATRIX_5X3_COEF_SIZE] = {
	0, 0, 0, /* pre offset */
	COEFF_NORM(0.181873),	COEFF_NORM(0.611831),	COEFF_NORM(0.061765),
	COEFF_NORM(-0.100251),	COEFF_NORM(-0.337249),	COEFF_NORM(0.437500),
	COEFF_NORM(0.437500),	COEFF_NORM(-0.397384),	COEFF_NORM(-0.040116),
	0, 0, 0, /* 10'/11'/12' */
	0, 0, 0, /* 20'/21'/22' */
	64, 512, 512, /* offset */
	0, 0, 0 /* mode, right_shift, clip_en */
};

/*  eotf matrix: bypass */
static int eotf_bypass_coeff[EOTF_COEFF_SIZE] = {
	EOTF_COEFF_NORM(1.0),	EOTF_COEFF_NORM(0.0),	EOTF_COEFF_NORM(0.0),
	EOTF_COEFF_NORM(0.0),	EOTF_COEFF_NORM(1.0),	EOTF_COEFF_NORM(0.0),
	EOTF_COEFF_NORM(0.0),	EOTF_COEFF_NORM(0.0),	EOTF_COEFF_NORM(1.0),
	EOTF_COEFF_RIGHTSHIFT /* right shift */
};

static void meson_viu_set_g12a_osd1_matrix(struct meson_drm *priv,
					   int *m, bool csc_on)
{
	/* VPP WRAP OSD1 matrix */
	writel(((m[0] & 0xfff) << 16) | (m[1] & 0xfff),
		priv->io_base + _REG(VPP_WRAP_OSD1_MATRIX_PRE_OFFSET0_1));
	writel(m[2] & 0xfff,
		priv->io_base + _REG(VPP_WRAP_OSD1_MATRIX_PRE_OFFSET2));
	writel(((m[3] & 0x1fff) << 16) | (m[4] & 0x1fff),
		priv->io_base + _REG(VPP_WRAP_OSD1_MATRIX_COEF00_01));
	writel(((m[5] & 0x1fff) << 16) | (m[6] & 0x1fff),
		priv->io_base + _REG(VPP_WRAP_OSD1_MATRIX_COEF02_10));
	writel(((m[7] & 0x1fff) << 16) | (m[8] & 0x1fff),
		priv->io_base + _REG(VPP_WRAP_OSD1_MATRIX_COEF11_12));
	writel(((m[9] & 0x1fff) << 16) | (m[10] & 0x1fff),
		priv->io_base + _REG(VPP_WRAP_OSD1_MATRIX_COEF20_21));
	writel((m[11] & 0x1fff) << 16,
		priv->io_base +	_REG(VPP_WRAP_OSD1_MATRIX_COEF22));

	writel(((m[18] & 0xfff) << 16) | (m[19] & 0xfff),
		priv->io_base + _REG(VPP_WRAP_OSD1_MATRIX_OFFSET0_1));
	writel(m[20] & 0xfff,
		priv->io_base + _REG(VPP_WRAP_OSD1_MATRIX_OFFSET2));

	writel_bits_relaxed(BIT(0), csc_on ? BIT(0) : 0,
		priv->io_base + _REG(VPP_WRAP_OSD1_MATRIX_EN_CTRL));
}

static void meson_viu_set_osd_matrix(struct meson_drm *priv,
				     enum viu_matrix_sel_e m_select,
			      int *m, bool csc_on)
{
	if (m_select == VIU_MATRIX_OSD) {
		/* osd matrix, VIU_MATRIX_0 */
		writel(((m[0] & 0xfff) << 16) | (m[1] & 0xfff),
			priv->io_base + _REG(VIU_OSD1_MATRIX_PRE_OFFSET0_1));
		writel(m[2] & 0xfff,
			priv->io_base + _REG(VIU_OSD1_MATRIX_PRE_OFFSET2));
		writel(((m[3] & 0x1fff) << 16) | (m[4] & 0x1fff),
			priv->io_base + _REG(VIU_OSD1_MATRIX_COEF00_01));
		writel(((m[5] & 0x1fff) << 16) | (m[6] & 0x1fff),
			priv->io_base + _REG(VIU_OSD1_MATRIX_COEF02_10));
		writel(((m[7] & 0x1fff) << 16) | (m[8] & 0x1fff),
			priv->io_base + _REG(VIU_OSD1_MATRIX_COEF11_12));
		writel(((m[9] & 0x1fff) << 16) | (m[10] & 0x1fff),
			priv->io_base + _REG(VIU_OSD1_MATRIX_COEF20_21));

		if (m[21]) {
			writel(((m[11] & 0x1fff) << 16) | (m[12] & 0x1fff),
				priv->io_base +
					_REG(VIU_OSD1_MATRIX_COEF22_30));
			writel(((m[13] & 0x1fff) << 16) | (m[14] & 0x1fff),
				priv->io_base +
					_REG(VIU_OSD1_MATRIX_COEF31_32));
			writel(((m[15] & 0x1fff) << 16) | (m[16] & 0x1fff),
				priv->io_base +
					_REG(VIU_OSD1_MATRIX_COEF40_41));
			writel(m[17] & 0x1fff, priv->io_base +
				_REG(VIU_OSD1_MATRIX_COLMOD_COEF42));
		} else
			writel((m[11] & 0x1fff) << 16, priv->io_base +
				_REG(VIU_OSD1_MATRIX_COEF22_30));

		writel(((m[18] & 0xfff) << 16) | (m[19] & 0xfff),
			priv->io_base + _REG(VIU_OSD1_MATRIX_OFFSET0_1));
		writel(m[20] & 0xfff,
			priv->io_base + _REG(VIU_OSD1_MATRIX_OFFSET2));

		writel_bits_relaxed(3 << 30, m[21] << 30,
			priv->io_base + _REG(VIU_OSD1_MATRIX_COLMOD_COEF42));
		writel_bits_relaxed(7 << 16, m[22] << 16,
			priv->io_base + _REG(VIU_OSD1_MATRIX_COLMOD_COEF42));

		/* 23 reserved for clipping control */
		writel_bits_relaxed(BIT(0), csc_on ? BIT(0) : 0,
			priv->io_base + _REG(VIU_OSD1_MATRIX_CTRL));
		writel_bits_relaxed(BIT(1), 0,
			priv->io_base + _REG(VIU_OSD1_MATRIX_CTRL));
	} else if (m_select == VIU_MATRIX_OSD_EOTF) {
		int i;

		/* osd eotf matrix, VIU_MATRIX_OSD_EOTF */
		for (i = 0; i < 5; i++)
			writel(((m[i * 2] & 0x1fff) << 16) |
				(m[i * 2 + 1] & 0x1fff), priv->io_base +
				_REG(VIU_OSD1_EOTF_CTL + i + 1));

		writel_bits_relaxed(BIT(30), csc_on ? BIT(30) : 0,
			priv->io_base + _REG(VIU_OSD1_EOTF_CTL));
		writel_bits_relaxed(BIT(31), csc_on ? BIT(31) : 0,
			priv->io_base + _REG(VIU_OSD1_EOTF_CTL));
	}
}

#define OSD_EOTF_LUT_SIZE 33
#define OSD_OETF_LUT_SIZE 41

static void
meson_viu_set_osd_lut(struct meson_drm *priv, enum viu_lut_sel_e lut_sel,
		      unsigned int *r_map, unsigned int *g_map,
		      unsigned int *b_map, bool csc_on)
{
	unsigned int addr_port;
	unsigned int data_port;
	unsigned int ctrl_port;
	int i;

	if (lut_sel == VIU_LUT_OSD_EOTF) {
		addr_port = VIU_OSD1_EOTF_LUT_ADDR_PORT;
		data_port = VIU_OSD1_EOTF_LUT_DATA_PORT;
		ctrl_port = VIU_OSD1_EOTF_CTL;
	} else if (lut_sel == VIU_LUT_OSD_OETF) {
		addr_port = VIU_OSD1_OETF_LUT_ADDR_PORT;
		data_port = VIU_OSD1_OETF_LUT_DATA_PORT;
		ctrl_port = VIU_OSD1_OETF_CTL;
	} else
		return;

	if (lut_sel == VIU_LUT_OSD_OETF) {
		writel(0, priv->io_base + _REG(addr_port));

		for (i = 0; i < (OSD_OETF_LUT_SIZE / 2); i++)
			writel(r_map[i * 2] | (r_map[i * 2 + 1] << 16),
				priv->io_base + _REG(data_port));

		writel(r_map[OSD_OETF_LUT_SIZE - 1] | (g_map[0] << 16),
			priv->io_base + _REG(data_port));

		for (i = 0; i < (OSD_OETF_LUT_SIZE / 2); i++)
			writel(g_map[i * 2 + 1] | (g_map[i * 2 + 2] << 16),
				priv->io_base + _REG(data_port));

		for (i = 0; i < (OSD_OETF_LUT_SIZE / 2); i++)
			writel(b_map[i * 2] | (b_map[i * 2 + 1] << 16),
				priv->io_base + _REG(data_port));

		writel(b_map[OSD_OETF_LUT_SIZE - 1],
			priv->io_base + _REG(data_port));

		if (csc_on)
			writel_bits_relaxed(0x7 << 29, 7 << 29,
					    priv->io_base + _REG(ctrl_port));
		else
			writel_bits_relaxed(0x7 << 29, 0,
					    priv->io_base + _REG(ctrl_port));
	} else if (lut_sel == VIU_LUT_OSD_EOTF) {
		writel(0, priv->io_base + _REG(addr_port));

		for (i = 0; i < (OSD_EOTF_LUT_SIZE / 2); i++)
			writel(r_map[i * 2] | (r_map[i * 2 + 1] << 16),
				priv->io_base + _REG(data_port));

		writel(r_map[OSD_EOTF_LUT_SIZE - 1] | (g_map[0] << 16),
			priv->io_base + _REG(data_port));

		for (i = 0; i < (OSD_EOTF_LUT_SIZE / 2); i++)
			writel(g_map[i * 2 + 1] | (g_map[i * 2 + 2] << 16),
				priv->io_base + _REG(data_port));

		for (i = 0; i < (OSD_EOTF_LUT_SIZE / 2); i++)
			writel(b_map[i * 2] | (b_map[i * 2 + 1] << 16),
				priv->io_base + _REG(data_port));

		writel(b_map[OSD_EOTF_LUT_SIZE - 1],
			priv->io_base + _REG(data_port));

		if (csc_on)
			writel_bits_relaxed(7 << 27, 7 << 27,
					    priv->io_base + _REG(ctrl_port));
		else
			writel_bits_relaxed(7 << 27, 0,
					    priv->io_base + _REG(ctrl_port));

		writel_bits_relaxed(BIT(31), BIT(31),
				    priv->io_base + _REG(ctrl_port));
	}
}

/* eotf lut: linear */
static unsigned int eotf_33_linear_mapping[OSD_EOTF_LUT_SIZE] = {
	0x0000,	0x0200,	0x0400, 0x0600,
	0x0800, 0x0a00, 0x0c00, 0x0e00,
	0x1000, 0x1200, 0x1400, 0x1600,
	0x1800, 0x1a00, 0x1c00, 0x1e00,
	0x2000, 0x2200, 0x2400, 0x2600,
	0x2800, 0x2a00, 0x2c00, 0x2e00,
	0x3000, 0x3200, 0x3400, 0x3600,
	0x3800, 0x3a00, 0x3c00, 0x3e00,
	0x4000
};

/* osd oetf lut: linear */
static unsigned int oetf_41_linear_mapping[OSD_OETF_LUT_SIZE] = {
	0, 0, 0, 0,
	0, 32, 64, 96,
	128, 160, 196, 224,
	256, 288, 320, 352,
	384, 416, 448, 480,
	512, 544, 576, 608,
	640, 672, 704, 736,
	768, 800, 832, 864,
	896, 928, 960, 992,
	1023, 1023, 1023, 1023,
	1023
};

static void meson_viu_load_matrix(struct meson_drm *priv)
{
	/* eotf lut bypass */
	meson_viu_set_osd_lut(priv, VIU_LUT_OSD_EOTF,
			      eotf_33_linear_mapping, /* R */
			      eotf_33_linear_mapping, /* G */
			      eotf_33_linear_mapping, /* B */
			      false);

	/* eotf matrix bypass */
	meson_viu_set_osd_matrix(priv, VIU_MATRIX_OSD_EOTF,
				 eotf_bypass_coeff,
				 false);

	/* oetf lut bypass */
	meson_viu_set_osd_lut(priv, VIU_LUT_OSD_OETF,
			      oetf_41_linear_mapping, /* R */
			      oetf_41_linear_mapping, /* G */
			      oetf_41_linear_mapping, /* B */
			      false);

	/* osd matrix RGB709 to YUV709 limit */
	meson_viu_set_osd_matrix(priv, VIU_MATRIX_OSD,
				 RGB709_to_YUV709l_coeff,
				 true);
}

/* VIU OSD1 Reset as workaround for GXL+ Alpha OSD Bug */
void meson_viu_osd1_reset(struct meson_drm *priv)
{
	uint32_t osd1_fifo_ctrl_stat, osd1_ctrl_stat2;

	/* Save these 2 registers state */
	osd1_fifo_ctrl_stat = readl_relaxed(
				priv->io_base + _REG(VIU_OSD1_FIFO_CTRL_STAT));
	osd1_ctrl_stat2 = readl_relaxed(
				priv->io_base + _REG(VIU_OSD1_CTRL_STAT2));

	/* Reset OSD1 */
	writel_bits_relaxed(BIT(0), BIT(0),
			    priv->io_base + _REG(VIU_SW_RESET));
	writel_bits_relaxed(BIT(0), 0,
			    priv->io_base + _REG(VIU_SW_RESET));

	/* Rewrite these registers state lost in the reset */
	writel_relaxed(osd1_fifo_ctrl_stat,
		       priv->io_base + _REG(VIU_OSD1_FIFO_CTRL_STAT));
	writel_relaxed(osd1_ctrl_stat2,
		       priv->io_base + _REG(VIU_OSD1_CTRL_STAT2));

	/* Reload the conversion matrix */
	meson_viu_load_matrix(priv);
}

void meson_viu_init(struct meson_drm *priv)
{
	uint32_t reg;

	/* Disable OSDs */
	writel_bits_relaxed(BIT(0) | BIT(21), 0,
			priv->io_base + _REG(VIU_OSD1_CTRL_STAT));
	writel_bits_relaxed(BIT(0) | BIT(21), 0,
			priv->io_base + _REG(VIU_OSD2_CTRL_STAT));

	/* On GXL/GXM, Use the 10bit HDR conversion matrix */
	if (meson_vpu_is_compatible(priv, "amlogic,meson-gxm-vpu") ||
	    meson_vpu_is_compatible(priv, "amlogic,meson-gxl-vpu"))
		meson_viu_load_matrix(priv);
	else if (meson_vpu_is_compatible(priv, "amlogic,meson-g12a-vpu"))
		meson_viu_set_g12a_osd1_matrix(priv, RGB709_to_YUV709l_coeff,
					       true);

	/* Initialize OSD1 fifo control register */
	reg = BIT(0) |	/* Urgent DDR request priority */
	      (4 << 5); /* hold_fifo_lines */
	if (meson_vpu_is_compatible(priv, "amlogic,meson-g12a-vpu"))
		reg |= (1 << 10) | /* burst length 32 */
		       (32 << 12) | /* fifo_depth_val: 32*8=256 */
		       (2 << 22) | /* 4 words in 1 burst */
		       (2 << 24) |
		       (1 << 31);
	else
		reg |= (3 << 10) | /* burst length 64 */
		       (32 << 12) | /* fifo_depth_val: 32*8=256 */
		       (2 << 22) | /* 4 words in 1 burst */
		       (2 << 24);
	writel_relaxed(reg, priv->io_base + _REG(VIU_OSD1_FIFO_CTRL_STAT));
	writel_relaxed(reg, priv->io_base + _REG(VIU_OSD2_FIFO_CTRL_STAT));

	/* Set OSD alpha replace value */
	writel_bits_relaxed(0xff << OSD_REPLACE_SHIFT,
			    0xff << OSD_REPLACE_SHIFT,
			    priv->io_base + _REG(VIU_OSD1_CTRL_STAT2));
	writel_bits_relaxed(0xff << OSD_REPLACE_SHIFT,
			    0xff << OSD_REPLACE_SHIFT,
			    priv->io_base + _REG(VIU_OSD2_CTRL_STAT2));

	/* Disable VD1 AFBC */
	/* di_mif0_en=0 mif0_to_vpp_en=0 di_mad_en=0 */
	writel_bits_relaxed(0x7 << 16, 0,
			priv->io_base + _REG(VIU_MISC_CTRL0));
	/* afbc vd1 set=0 */
	writel_bits_relaxed(BIT(20), 0,
			priv->io_base + _REG(VIU_MISC_CTRL0));
	writel_relaxed(0, priv->io_base + _REG(AFBC_ENABLE));

	writel_relaxed(0x00FF00C0,
			priv->io_base + _REG(VD1_IF0_LUMA_FIFO_SIZE));
	writel_relaxed(0x00FF00C0,
			priv->io_base + _REG(VD2_IF0_LUMA_FIFO_SIZE));

	if (meson_vpu_is_compatible(priv, "amlogic,meson-g12a-vpu")) {
		writel_relaxed(4 << 29 |
				1 << 27 |
				1 << 26 | /* blend_din0 input to blend0 */
				1 << 25 | /* blend1_dout to blend2 */
				1 << 24 | /* blend1_din3 input to blend1 */
				1 << 20 |
				0 << 16 |
				1,
				priv->io_base + _REG(VIU_OSD_BLEND_CTRL));
		writel_relaxed(1 << 20,
				priv->io_base + _REG(OSD1_BLEND_SRC_CTRL));
		writel_relaxed(1 << 20,
				priv->io_base + _REG(OSD2_BLEND_SRC_CTRL));
		writel_relaxed(0, priv->io_base + _REG(VD1_BLEND_SRC_CTRL));
		writel_relaxed(0, priv->io_base + _REG(VD2_BLEND_SRC_CTRL));
		writel_relaxed(0,
				priv->io_base + _REG(VIU_OSD_BLEND_DUMMY_DATA0));
		writel_relaxed(0,
				priv->io_base + _REG(VIU_OSD_BLEND_DUMMY_ALPHA));
		writel_bits_relaxed(0x3 << 2, 0x3 << 2,
				priv->io_base + _REG(DOLBY_PATH_CTRL));
	}

	priv->viu.osd1_enabled = false;
	priv->viu.osd1_commit = false;
	priv->viu.osd1_interlace = false;
}