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1/*
2 * Copyright (C) 2012 Samsung Electronics Co.Ltd
3 * Authors:
4 * Eunchul Kim <chulspro.kim@samsung.com>
5 * Jinyoung Jeon <jy0.jeon@samsung.com>
6 * Sangmin Lee <lsmin.lee@samsung.com>
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License as published by the
10 * Free Software Foundation; either version 2 of the License, or (at your
11 * option) any later version.
12 *
13 */
14#include <linux/kernel.h>
15#include <linux/platform_device.h>
16#include <linux/clk.h>
17#include <linux/pm_runtime.h>
18#include <linux/mfd/syscon.h>
19#include <linux/regmap.h>
20
21#include <drm/drmP.h>
22#include <drm/exynos_drm.h>
23#include "regs-gsc.h"
24#include "exynos_drm_drv.h"
25#include "exynos_drm_ipp.h"
26#include "exynos_drm_gsc.h"
27
28/*
29 * GSC stands for General SCaler and
30 * supports image scaler/rotator and input/output DMA operations.
31 * input DMA reads image data from the memory.
32 * output DMA writes image data to memory.
33 * GSC supports image rotation and image effect functions.
34 *
35 * M2M operation : supports crop/scale/rotation/csc so on.
36 * Memory ----> GSC H/W ----> Memory.
37 * Writeback operation : supports cloned screen with FIMD.
38 * FIMD ----> GSC H/W ----> Memory.
39 * Output operation : supports direct display using local path.
40 * Memory ----> GSC H/W ----> FIMD, Mixer.
41 */
42
43/*
44 * TODO
45 * 1. check suspend/resume api if needed.
46 * 2. need to check use case platform_device_id.
47 * 3. check src/dst size with, height.
48 * 4. added check_prepare api for right register.
49 * 5. need to add supported list in prop_list.
50 * 6. check prescaler/scaler optimization.
51 */
52
53#define GSC_MAX_DEVS 4
54#define GSC_MAX_SRC 4
55#define GSC_MAX_DST 16
56#define GSC_RESET_TIMEOUT 50
57#define GSC_BUF_STOP 1
58#define GSC_BUF_START 2
59#define GSC_REG_SZ 16
60#define GSC_WIDTH_ITU_709 1280
61#define GSC_SC_UP_MAX_RATIO 65536
62#define GSC_SC_DOWN_RATIO_7_8 74898
63#define GSC_SC_DOWN_RATIO_6_8 87381
64#define GSC_SC_DOWN_RATIO_5_8 104857
65#define GSC_SC_DOWN_RATIO_4_8 131072
66#define GSC_SC_DOWN_RATIO_3_8 174762
67#define GSC_SC_DOWN_RATIO_2_8 262144
68#define GSC_REFRESH_MIN 12
69#define GSC_REFRESH_MAX 60
70#define GSC_CROP_MAX 8192
71#define GSC_CROP_MIN 32
72#define GSC_SCALE_MAX 4224
73#define GSC_SCALE_MIN 32
74#define GSC_COEF_RATIO 7
75#define GSC_COEF_PHASE 9
76#define GSC_COEF_ATTR 16
77#define GSC_COEF_H_8T 8
78#define GSC_COEF_V_4T 4
79#define GSC_COEF_DEPTH 3
80
81#define get_gsc_context(dev) platform_get_drvdata(to_platform_device(dev))
82#define get_ctx_from_ippdrv(ippdrv) container_of(ippdrv,\
83 struct gsc_context, ippdrv);
84#define gsc_read(offset) readl(ctx->regs + (offset))
85#define gsc_write(cfg, offset) writel(cfg, ctx->regs + (offset))
86
87/*
88 * A structure of scaler.
89 *
90 * @range: narrow, wide.
91 * @pre_shfactor: pre sclaer shift factor.
92 * @pre_hratio: horizontal ratio of the prescaler.
93 * @pre_vratio: vertical ratio of the prescaler.
94 * @main_hratio: the main scaler's horizontal ratio.
95 * @main_vratio: the main scaler's vertical ratio.
96 */
97struct gsc_scaler {
98 bool range;
99 u32 pre_shfactor;
100 u32 pre_hratio;
101 u32 pre_vratio;
102 unsigned long main_hratio;
103 unsigned long main_vratio;
104};
105
106/*
107 * A structure of scaler capability.
108 *
109 * find user manual 49.2 features.
110 * @tile_w: tile mode or rotation width.
111 * @tile_h: tile mode or rotation height.
112 * @w: other cases width.
113 * @h: other cases height.
114 */
115struct gsc_capability {
116 /* tile or rotation */
117 u32 tile_w;
118 u32 tile_h;
119 /* other cases */
120 u32 w;
121 u32 h;
122};
123
124/*
125 * A structure of gsc context.
126 *
127 * @ippdrv: prepare initialization using ippdrv.
128 * @regs_res: register resources.
129 * @regs: memory mapped io registers.
130 * @sysreg: handle to SYSREG block regmap.
131 * @lock: locking of operations.
132 * @gsc_clk: gsc gate clock.
133 * @sc: scaler infomations.
134 * @id: gsc id.
135 * @irq: irq number.
136 * @rotation: supports rotation of src.
137 * @suspended: qos operations.
138 */
139struct gsc_context {
140 struct exynos_drm_ippdrv ippdrv;
141 struct resource *regs_res;
142 void __iomem *regs;
143 struct regmap *sysreg;
144 struct mutex lock;
145 struct clk *gsc_clk;
146 struct gsc_scaler sc;
147 int id;
148 int irq;
149 bool rotation;
150 bool suspended;
151};
152
153/* 8-tap Filter Coefficient */
154static const int h_coef_8t[GSC_COEF_RATIO][GSC_COEF_ATTR][GSC_COEF_H_8T] = {
155 { /* Ratio <= 65536 (~8:8) */
156 { 0, 0, 0, 128, 0, 0, 0, 0 },
157 { -1, 2, -6, 127, 7, -2, 1, 0 },
158 { -1, 4, -12, 125, 16, -5, 1, 0 },
159 { -1, 5, -15, 120, 25, -8, 2, 0 },
160 { -1, 6, -18, 114, 35, -10, 3, -1 },
161 { -1, 6, -20, 107, 46, -13, 4, -1 },
162 { -2, 7, -21, 99, 57, -16, 5, -1 },
163 { -1, 6, -20, 89, 68, -18, 5, -1 },
164 { -1, 6, -20, 79, 79, -20, 6, -1 },
165 { -1, 5, -18, 68, 89, -20, 6, -1 },
166 { -1, 5, -16, 57, 99, -21, 7, -2 },
167 { -1, 4, -13, 46, 107, -20, 6, -1 },
168 { -1, 3, -10, 35, 114, -18, 6, -1 },
169 { 0, 2, -8, 25, 120, -15, 5, -1 },
170 { 0, 1, -5, 16, 125, -12, 4, -1 },
171 { 0, 1, -2, 7, 127, -6, 2, -1 }
172 }, { /* 65536 < Ratio <= 74898 (~8:7) */
173 { 3, -8, 14, 111, 13, -8, 3, 0 },
174 { 2, -6, 7, 112, 21, -10, 3, -1 },
175 { 2, -4, 1, 110, 28, -12, 4, -1 },
176 { 1, -2, -3, 106, 36, -13, 4, -1 },
177 { 1, -1, -7, 103, 44, -15, 4, -1 },
178 { 1, 1, -11, 97, 53, -16, 4, -1 },
179 { 0, 2, -13, 91, 61, -16, 4, -1 },
180 { 0, 3, -15, 85, 69, -17, 4, -1 },
181 { 0, 3, -16, 77, 77, -16, 3, 0 },
182 { -1, 4, -17, 69, 85, -15, 3, 0 },
183 { -1, 4, -16, 61, 91, -13, 2, 0 },
184 { -1, 4, -16, 53, 97, -11, 1, 1 },
185 { -1, 4, -15, 44, 103, -7, -1, 1 },
186 { -1, 4, -13, 36, 106, -3, -2, 1 },
187 { -1, 4, -12, 28, 110, 1, -4, 2 },
188 { -1, 3, -10, 21, 112, 7, -6, 2 }
189 }, { /* 74898 < Ratio <= 87381 (~8:6) */
190 { 2, -11, 25, 96, 25, -11, 2, 0 },
191 { 2, -10, 19, 96, 31, -12, 2, 0 },
192 { 2, -9, 14, 94, 37, -12, 2, 0 },
193 { 2, -8, 10, 92, 43, -12, 1, 0 },
194 { 2, -7, 5, 90, 49, -12, 1, 0 },
195 { 2, -5, 1, 86, 55, -12, 0, 1 },
196 { 2, -4, -2, 82, 61, -11, -1, 1 },
197 { 1, -3, -5, 77, 67, -9, -1, 1 },
198 { 1, -2, -7, 72, 72, -7, -2, 1 },
199 { 1, -1, -9, 67, 77, -5, -3, 1 },
200 { 1, -1, -11, 61, 82, -2, -4, 2 },
201 { 1, 0, -12, 55, 86, 1, -5, 2 },
202 { 0, 1, -12, 49, 90, 5, -7, 2 },
203 { 0, 1, -12, 43, 92, 10, -8, 2 },
204 { 0, 2, -12, 37, 94, 14, -9, 2 },
205 { 0, 2, -12, 31, 96, 19, -10, 2 }
206 }, { /* 87381 < Ratio <= 104857 (~8:5) */
207 { -1, -8, 33, 80, 33, -8, -1, 0 },
208 { -1, -8, 28, 80, 37, -7, -2, 1 },
209 { 0, -8, 24, 79, 41, -7, -2, 1 },
210 { 0, -8, 20, 78, 46, -6, -3, 1 },
211 { 0, -8, 16, 76, 50, -4, -3, 1 },
212 { 0, -7, 13, 74, 54, -3, -4, 1 },
213 { 1, -7, 10, 71, 58, -1, -5, 1 },
214 { 1, -6, 6, 68, 62, 1, -5, 1 },
215 { 1, -6, 4, 65, 65, 4, -6, 1 },
216 { 1, -5, 1, 62, 68, 6, -6, 1 },
217 { 1, -5, -1, 58, 71, 10, -7, 1 },
218 { 1, -4, -3, 54, 74, 13, -7, 0 },
219 { 1, -3, -4, 50, 76, 16, -8, 0 },
220 { 1, -3, -6, 46, 78, 20, -8, 0 },
221 { 1, -2, -7, 41, 79, 24, -8, 0 },
222 { 1, -2, -7, 37, 80, 28, -8, -1 }
223 }, { /* 104857 < Ratio <= 131072 (~8:4) */
224 { -3, 0, 35, 64, 35, 0, -3, 0 },
225 { -3, -1, 32, 64, 38, 1, -3, 0 },
226 { -2, -2, 29, 63, 41, 2, -3, 0 },
227 { -2, -3, 27, 63, 43, 4, -4, 0 },
228 { -2, -3, 24, 61, 46, 6, -4, 0 },
229 { -2, -3, 21, 60, 49, 7, -4, 0 },
230 { -1, -4, 19, 59, 51, 9, -4, -1 },
231 { -1, -4, 16, 57, 53, 12, -4, -1 },
232 { -1, -4, 14, 55, 55, 14, -4, -1 },
233 { -1, -4, 12, 53, 57, 16, -4, -1 },
234 { -1, -4, 9, 51, 59, 19, -4, -1 },
235 { 0, -4, 7, 49, 60, 21, -3, -2 },
236 { 0, -4, 6, 46, 61, 24, -3, -2 },
237 { 0, -4, 4, 43, 63, 27, -3, -2 },
238 { 0, -3, 2, 41, 63, 29, -2, -2 },
239 { 0, -3, 1, 38, 64, 32, -1, -3 }
240 }, { /* 131072 < Ratio <= 174762 (~8:3) */
241 { -1, 8, 33, 48, 33, 8, -1, 0 },
242 { -1, 7, 31, 49, 35, 9, -1, -1 },
243 { -1, 6, 30, 49, 36, 10, -1, -1 },
244 { -1, 5, 28, 48, 38, 12, -1, -1 },
245 { -1, 4, 26, 48, 39, 13, 0, -1 },
246 { -1, 3, 24, 47, 41, 15, 0, -1 },
247 { -1, 2, 23, 47, 42, 16, 0, -1 },
248 { -1, 2, 21, 45, 43, 18, 1, -1 },
249 { -1, 1, 19, 45, 45, 19, 1, -1 },
250 { -1, 1, 18, 43, 45, 21, 2, -1 },
251 { -1, 0, 16, 42, 47, 23, 2, -1 },
252 { -1, 0, 15, 41, 47, 24, 3, -1 },
253 { -1, 0, 13, 39, 48, 26, 4, -1 },
254 { -1, -1, 12, 38, 48, 28, 5, -1 },
255 { -1, -1, 10, 36, 49, 30, 6, -1 },
256 { -1, -1, 9, 35, 49, 31, 7, -1 }
257 }, { /* 174762 < Ratio <= 262144 (~8:2) */
258 { 2, 13, 30, 38, 30, 13, 2, 0 },
259 { 2, 12, 29, 38, 30, 14, 3, 0 },
260 { 2, 11, 28, 38, 31, 15, 3, 0 },
261 { 2, 10, 26, 38, 32, 16, 4, 0 },
262 { 1, 10, 26, 37, 33, 17, 4, 0 },
263 { 1, 9, 24, 37, 34, 18, 5, 0 },
264 { 1, 8, 24, 37, 34, 19, 5, 0 },
265 { 1, 7, 22, 36, 35, 20, 6, 1 },
266 { 1, 6, 21, 36, 36, 21, 6, 1 },
267 { 1, 6, 20, 35, 36, 22, 7, 1 },
268 { 0, 5, 19, 34, 37, 24, 8, 1 },
269 { 0, 5, 18, 34, 37, 24, 9, 1 },
270 { 0, 4, 17, 33, 37, 26, 10, 1 },
271 { 0, 4, 16, 32, 38, 26, 10, 2 },
272 { 0, 3, 15, 31, 38, 28, 11, 2 },
273 { 0, 3, 14, 30, 38, 29, 12, 2 }
274 }
275};
276
277/* 4-tap Filter Coefficient */
278static const int v_coef_4t[GSC_COEF_RATIO][GSC_COEF_ATTR][GSC_COEF_V_4T] = {
279 { /* Ratio <= 65536 (~8:8) */
280 { 0, 128, 0, 0 },
281 { -4, 127, 5, 0 },
282 { -6, 124, 11, -1 },
283 { -8, 118, 19, -1 },
284 { -8, 111, 27, -2 },
285 { -8, 102, 37, -3 },
286 { -8, 92, 48, -4 },
287 { -7, 81, 59, -5 },
288 { -6, 70, 70, -6 },
289 { -5, 59, 81, -7 },
290 { -4, 48, 92, -8 },
291 { -3, 37, 102, -8 },
292 { -2, 27, 111, -8 },
293 { -1, 19, 118, -8 },
294 { -1, 11, 124, -6 },
295 { 0, 5, 127, -4 }
296 }, { /* 65536 < Ratio <= 74898 (~8:7) */
297 { 8, 112, 8, 0 },
298 { 4, 111, 14, -1 },
299 { 1, 109, 20, -2 },
300 { -2, 105, 27, -2 },
301 { -3, 100, 34, -3 },
302 { -5, 93, 43, -3 },
303 { -5, 86, 51, -4 },
304 { -5, 77, 60, -4 },
305 { -5, 69, 69, -5 },
306 { -4, 60, 77, -5 },
307 { -4, 51, 86, -5 },
308 { -3, 43, 93, -5 },
309 { -3, 34, 100, -3 },
310 { -2, 27, 105, -2 },
311 { -2, 20, 109, 1 },
312 { -1, 14, 111, 4 }
313 }, { /* 74898 < Ratio <= 87381 (~8:6) */
314 { 16, 96, 16, 0 },
315 { 12, 97, 21, -2 },
316 { 8, 96, 26, -2 },
317 { 5, 93, 32, -2 },
318 { 2, 89, 39, -2 },
319 { 0, 84, 46, -2 },
320 { -1, 79, 53, -3 },
321 { -2, 73, 59, -2 },
322 { -2, 66, 66, -2 },
323 { -2, 59, 73, -2 },
324 { -3, 53, 79, -1 },
325 { -2, 46, 84, 0 },
326 { -2, 39, 89, 2 },
327 { -2, 32, 93, 5 },
328 { -2, 26, 96, 8 },
329 { -2, 21, 97, 12 }
330 }, { /* 87381 < Ratio <= 104857 (~8:5) */
331 { 22, 84, 22, 0 },
332 { 18, 85, 26, -1 },
333 { 14, 84, 31, -1 },
334 { 11, 82, 36, -1 },
335 { 8, 79, 42, -1 },
336 { 6, 76, 47, -1 },
337 { 4, 72, 52, 0 },
338 { 2, 68, 58, 0 },
339 { 1, 63, 63, 1 },
340 { 0, 58, 68, 2 },
341 { 0, 52, 72, 4 },
342 { -1, 47, 76, 6 },
343 { -1, 42, 79, 8 },
344 { -1, 36, 82, 11 },
345 { -1, 31, 84, 14 },
346 { -1, 26, 85, 18 }
347 }, { /* 104857 < Ratio <= 131072 (~8:4) */
348 { 26, 76, 26, 0 },
349 { 22, 76, 30, 0 },
350 { 19, 75, 34, 0 },
351 { 16, 73, 38, 1 },
352 { 13, 71, 43, 1 },
353 { 10, 69, 47, 2 },
354 { 8, 66, 51, 3 },
355 { 6, 63, 55, 4 },
356 { 5, 59, 59, 5 },
357 { 4, 55, 63, 6 },
358 { 3, 51, 66, 8 },
359 { 2, 47, 69, 10 },
360 { 1, 43, 71, 13 },
361 { 1, 38, 73, 16 },
362 { 0, 34, 75, 19 },
363 { 0, 30, 76, 22 }
364 }, { /* 131072 < Ratio <= 174762 (~8:3) */
365 { 29, 70, 29, 0 },
366 { 26, 68, 32, 2 },
367 { 23, 67, 36, 2 },
368 { 20, 66, 39, 3 },
369 { 17, 65, 43, 3 },
370 { 15, 63, 46, 4 },
371 { 12, 61, 50, 5 },
372 { 10, 58, 53, 7 },
373 { 8, 56, 56, 8 },
374 { 7, 53, 58, 10 },
375 { 5, 50, 61, 12 },
376 { 4, 46, 63, 15 },
377 { 3, 43, 65, 17 },
378 { 3, 39, 66, 20 },
379 { 2, 36, 67, 23 },
380 { 2, 32, 68, 26 }
381 }, { /* 174762 < Ratio <= 262144 (~8:2) */
382 { 32, 64, 32, 0 },
383 { 28, 63, 34, 3 },
384 { 25, 62, 37, 4 },
385 { 22, 62, 40, 4 },
386 { 19, 61, 43, 5 },
387 { 17, 59, 46, 6 },
388 { 15, 58, 48, 7 },
389 { 13, 55, 51, 9 },
390 { 11, 53, 53, 11 },
391 { 9, 51, 55, 13 },
392 { 7, 48, 58, 15 },
393 { 6, 46, 59, 17 },
394 { 5, 43, 61, 19 },
395 { 4, 40, 62, 22 },
396 { 4, 37, 62, 25 },
397 { 3, 34, 63, 28 }
398 }
399};
400
401static int gsc_sw_reset(struct gsc_context *ctx)
402{
403 u32 cfg;
404 int count = GSC_RESET_TIMEOUT;
405
406 /* s/w reset */
407 cfg = (GSC_SW_RESET_SRESET);
408 gsc_write(cfg, GSC_SW_RESET);
409
410 /* wait s/w reset complete */
411 while (count--) {
412 cfg = gsc_read(GSC_SW_RESET);
413 if (!cfg)
414 break;
415 usleep_range(1000, 2000);
416 }
417
418 if (cfg) {
419 DRM_ERROR("failed to reset gsc h/w.\n");
420 return -EBUSY;
421 }
422
423 /* reset sequence */
424 cfg = gsc_read(GSC_IN_BASE_ADDR_Y_MASK);
425 cfg |= (GSC_IN_BASE_ADDR_MASK |
426 GSC_IN_BASE_ADDR_PINGPONG(0));
427 gsc_write(cfg, GSC_IN_BASE_ADDR_Y_MASK);
428 gsc_write(cfg, GSC_IN_BASE_ADDR_CB_MASK);
429 gsc_write(cfg, GSC_IN_BASE_ADDR_CR_MASK);
430
431 cfg = gsc_read(GSC_OUT_BASE_ADDR_Y_MASK);
432 cfg |= (GSC_OUT_BASE_ADDR_MASK |
433 GSC_OUT_BASE_ADDR_PINGPONG(0));
434 gsc_write(cfg, GSC_OUT_BASE_ADDR_Y_MASK);
435 gsc_write(cfg, GSC_OUT_BASE_ADDR_CB_MASK);
436 gsc_write(cfg, GSC_OUT_BASE_ADDR_CR_MASK);
437
438 return 0;
439}
440
441static void gsc_set_gscblk_fimd_wb(struct gsc_context *ctx, bool enable)
442{
443 unsigned int gscblk_cfg;
444
445 if (!ctx->sysreg)
446 return;
447
448 regmap_read(ctx->sysreg, SYSREG_GSCBLK_CFG1, &gscblk_cfg);
449
450 if (enable)
451 gscblk_cfg |= GSC_BLK_DISP1WB_DEST(ctx->id) |
452 GSC_BLK_GSCL_WB_IN_SRC_SEL(ctx->id) |
453 GSC_BLK_SW_RESET_WB_DEST(ctx->id);
454 else
455 gscblk_cfg |= GSC_BLK_PXLASYNC_LO_MASK_WB(ctx->id);
456
457 regmap_write(ctx->sysreg, SYSREG_GSCBLK_CFG1, gscblk_cfg);
458}
459
460static void gsc_handle_irq(struct gsc_context *ctx, bool enable,
461 bool overflow, bool done)
462{
463 u32 cfg;
464
465 DRM_DEBUG_KMS("enable[%d]overflow[%d]level[%d]\n",
466 enable, overflow, done);
467
468 cfg = gsc_read(GSC_IRQ);
469 cfg |= (GSC_IRQ_OR_MASK | GSC_IRQ_FRMDONE_MASK);
470
471 if (enable)
472 cfg |= GSC_IRQ_ENABLE;
473 else
474 cfg &= ~GSC_IRQ_ENABLE;
475
476 if (overflow)
477 cfg &= ~GSC_IRQ_OR_MASK;
478 else
479 cfg |= GSC_IRQ_OR_MASK;
480
481 if (done)
482 cfg &= ~GSC_IRQ_FRMDONE_MASK;
483 else
484 cfg |= GSC_IRQ_FRMDONE_MASK;
485
486 gsc_write(cfg, GSC_IRQ);
487}
488
489
490static int gsc_src_set_fmt(struct device *dev, u32 fmt)
491{
492 struct gsc_context *ctx = get_gsc_context(dev);
493 struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv;
494 u32 cfg;
495
496 DRM_DEBUG_KMS("fmt[0x%x]\n", fmt);
497
498 cfg = gsc_read(GSC_IN_CON);
499 cfg &= ~(GSC_IN_RGB_TYPE_MASK | GSC_IN_YUV422_1P_ORDER_MASK |
500 GSC_IN_CHROMA_ORDER_MASK | GSC_IN_FORMAT_MASK |
501 GSC_IN_TILE_TYPE_MASK | GSC_IN_TILE_MODE |
502 GSC_IN_CHROM_STRIDE_SEL_MASK | GSC_IN_RB_SWAP_MASK);
503
504 switch (fmt) {
505 case DRM_FORMAT_RGB565:
506 cfg |= GSC_IN_RGB565;
507 break;
508 case DRM_FORMAT_XRGB8888:
509 cfg |= GSC_IN_XRGB8888;
510 break;
511 case DRM_FORMAT_BGRX8888:
512 cfg |= (GSC_IN_XRGB8888 | GSC_IN_RB_SWAP);
513 break;
514 case DRM_FORMAT_YUYV:
515 cfg |= (GSC_IN_YUV422_1P |
516 GSC_IN_YUV422_1P_ORDER_LSB_Y |
517 GSC_IN_CHROMA_ORDER_CBCR);
518 break;
519 case DRM_FORMAT_YVYU:
520 cfg |= (GSC_IN_YUV422_1P |
521 GSC_IN_YUV422_1P_ORDER_LSB_Y |
522 GSC_IN_CHROMA_ORDER_CRCB);
523 break;
524 case DRM_FORMAT_UYVY:
525 cfg |= (GSC_IN_YUV422_1P |
526 GSC_IN_YUV422_1P_OEDER_LSB_C |
527 GSC_IN_CHROMA_ORDER_CBCR);
528 break;
529 case DRM_FORMAT_VYUY:
530 cfg |= (GSC_IN_YUV422_1P |
531 GSC_IN_YUV422_1P_OEDER_LSB_C |
532 GSC_IN_CHROMA_ORDER_CRCB);
533 break;
534 case DRM_FORMAT_NV21:
535 case DRM_FORMAT_NV61:
536 cfg |= (GSC_IN_CHROMA_ORDER_CRCB |
537 GSC_IN_YUV420_2P);
538 break;
539 case DRM_FORMAT_YUV422:
540 cfg |= GSC_IN_YUV422_3P;
541 break;
542 case DRM_FORMAT_YUV420:
543 case DRM_FORMAT_YVU420:
544 cfg |= GSC_IN_YUV420_3P;
545 break;
546 case DRM_FORMAT_NV12:
547 case DRM_FORMAT_NV16:
548 cfg |= (GSC_IN_CHROMA_ORDER_CBCR |
549 GSC_IN_YUV420_2P);
550 break;
551 default:
552 dev_err(ippdrv->dev, "invalid target yuv order 0x%x.\n", fmt);
553 return -EINVAL;
554 }
555
556 gsc_write(cfg, GSC_IN_CON);
557
558 return 0;
559}
560
561static int gsc_src_set_transf(struct device *dev,
562 enum drm_exynos_degree degree,
563 enum drm_exynos_flip flip, bool *swap)
564{
565 struct gsc_context *ctx = get_gsc_context(dev);
566 struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv;
567 u32 cfg;
568
569 DRM_DEBUG_KMS("degree[%d]flip[0x%x]\n", degree, flip);
570
571 cfg = gsc_read(GSC_IN_CON);
572 cfg &= ~GSC_IN_ROT_MASK;
573
574 switch (degree) {
575 case EXYNOS_DRM_DEGREE_0:
576 if (flip & EXYNOS_DRM_FLIP_VERTICAL)
577 cfg |= GSC_IN_ROT_XFLIP;
578 if (flip & EXYNOS_DRM_FLIP_HORIZONTAL)
579 cfg |= GSC_IN_ROT_YFLIP;
580 break;
581 case EXYNOS_DRM_DEGREE_90:
582 if (flip & EXYNOS_DRM_FLIP_VERTICAL)
583 cfg |= GSC_IN_ROT_90_XFLIP;
584 else if (flip & EXYNOS_DRM_FLIP_HORIZONTAL)
585 cfg |= GSC_IN_ROT_90_YFLIP;
586 else
587 cfg |= GSC_IN_ROT_90;
588 break;
589 case EXYNOS_DRM_DEGREE_180:
590 cfg |= GSC_IN_ROT_180;
591 if (flip & EXYNOS_DRM_FLIP_VERTICAL)
592 cfg &= ~GSC_IN_ROT_XFLIP;
593 if (flip & EXYNOS_DRM_FLIP_HORIZONTAL)
594 cfg &= ~GSC_IN_ROT_YFLIP;
595 break;
596 case EXYNOS_DRM_DEGREE_270:
597 cfg |= GSC_IN_ROT_270;
598 if (flip & EXYNOS_DRM_FLIP_VERTICAL)
599 cfg &= ~GSC_IN_ROT_XFLIP;
600 if (flip & EXYNOS_DRM_FLIP_HORIZONTAL)
601 cfg &= ~GSC_IN_ROT_YFLIP;
602 break;
603 default:
604 dev_err(ippdrv->dev, "invalid degree value %d.\n", degree);
605 return -EINVAL;
606 }
607
608 gsc_write(cfg, GSC_IN_CON);
609
610 ctx->rotation = (cfg & GSC_IN_ROT_90) ? 1 : 0;
611 *swap = ctx->rotation;
612
613 return 0;
614}
615
616static int gsc_src_set_size(struct device *dev, int swap,
617 struct drm_exynos_pos *pos, struct drm_exynos_sz *sz)
618{
619 struct gsc_context *ctx = get_gsc_context(dev);
620 struct drm_exynos_pos img_pos = *pos;
621 struct gsc_scaler *sc = &ctx->sc;
622 u32 cfg;
623
624 DRM_DEBUG_KMS("swap[%d]x[%d]y[%d]w[%d]h[%d]\n",
625 swap, pos->x, pos->y, pos->w, pos->h);
626
627 if (swap) {
628 img_pos.w = pos->h;
629 img_pos.h = pos->w;
630 }
631
632 /* pixel offset */
633 cfg = (GSC_SRCIMG_OFFSET_X(img_pos.x) |
634 GSC_SRCIMG_OFFSET_Y(img_pos.y));
635 gsc_write(cfg, GSC_SRCIMG_OFFSET);
636
637 /* cropped size */
638 cfg = (GSC_CROPPED_WIDTH(img_pos.w) |
639 GSC_CROPPED_HEIGHT(img_pos.h));
640 gsc_write(cfg, GSC_CROPPED_SIZE);
641
642 DRM_DEBUG_KMS("hsize[%d]vsize[%d]\n", sz->hsize, sz->vsize);
643
644 /* original size */
645 cfg = gsc_read(GSC_SRCIMG_SIZE);
646 cfg &= ~(GSC_SRCIMG_HEIGHT_MASK |
647 GSC_SRCIMG_WIDTH_MASK);
648
649 cfg |= (GSC_SRCIMG_WIDTH(sz->hsize) |
650 GSC_SRCIMG_HEIGHT(sz->vsize));
651
652 gsc_write(cfg, GSC_SRCIMG_SIZE);
653
654 cfg = gsc_read(GSC_IN_CON);
655 cfg &= ~GSC_IN_RGB_TYPE_MASK;
656
657 DRM_DEBUG_KMS("width[%d]range[%d]\n", pos->w, sc->range);
658
659 if (pos->w >= GSC_WIDTH_ITU_709)
660 if (sc->range)
661 cfg |= GSC_IN_RGB_HD_WIDE;
662 else
663 cfg |= GSC_IN_RGB_HD_NARROW;
664 else
665 if (sc->range)
666 cfg |= GSC_IN_RGB_SD_WIDE;
667 else
668 cfg |= GSC_IN_RGB_SD_NARROW;
669
670 gsc_write(cfg, GSC_IN_CON);
671
672 return 0;
673}
674
675static int gsc_src_set_buf_seq(struct gsc_context *ctx, u32 buf_id,
676 enum drm_exynos_ipp_buf_type buf_type)
677{
678 struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv;
679 bool masked;
680 u32 cfg;
681 u32 mask = 0x00000001 << buf_id;
682
683 DRM_DEBUG_KMS("buf_id[%d]buf_type[%d]\n", buf_id, buf_type);
684
685 /* mask register set */
686 cfg = gsc_read(GSC_IN_BASE_ADDR_Y_MASK);
687
688 switch (buf_type) {
689 case IPP_BUF_ENQUEUE:
690 masked = false;
691 break;
692 case IPP_BUF_DEQUEUE:
693 masked = true;
694 break;
695 default:
696 dev_err(ippdrv->dev, "invalid buf ctrl parameter.\n");
697 return -EINVAL;
698 }
699
700 /* sequence id */
701 cfg &= ~mask;
702 cfg |= masked << buf_id;
703 gsc_write(cfg, GSC_IN_BASE_ADDR_Y_MASK);
704 gsc_write(cfg, GSC_IN_BASE_ADDR_CB_MASK);
705 gsc_write(cfg, GSC_IN_BASE_ADDR_CR_MASK);
706
707 return 0;
708}
709
710static int gsc_src_set_addr(struct device *dev,
711 struct drm_exynos_ipp_buf_info *buf_info, u32 buf_id,
712 enum drm_exynos_ipp_buf_type buf_type)
713{
714 struct gsc_context *ctx = get_gsc_context(dev);
715 struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv;
716 struct drm_exynos_ipp_cmd_node *c_node = ippdrv->c_node;
717 struct drm_exynos_ipp_property *property;
718
719 if (!c_node) {
720 DRM_ERROR("failed to get c_node.\n");
721 return -EFAULT;
722 }
723
724 property = &c_node->property;
725
726 DRM_DEBUG_KMS("prop_id[%d]buf_id[%d]buf_type[%d]\n",
727 property->prop_id, buf_id, buf_type);
728
729 if (buf_id > GSC_MAX_SRC) {
730 dev_info(ippdrv->dev, "invalid buf_id %d.\n", buf_id);
731 return -EINVAL;
732 }
733
734 /* address register set */
735 switch (buf_type) {
736 case IPP_BUF_ENQUEUE:
737 gsc_write(buf_info->base[EXYNOS_DRM_PLANAR_Y],
738 GSC_IN_BASE_ADDR_Y(buf_id));
739 gsc_write(buf_info->base[EXYNOS_DRM_PLANAR_CB],
740 GSC_IN_BASE_ADDR_CB(buf_id));
741 gsc_write(buf_info->base[EXYNOS_DRM_PLANAR_CR],
742 GSC_IN_BASE_ADDR_CR(buf_id));
743 break;
744 case IPP_BUF_DEQUEUE:
745 gsc_write(0x0, GSC_IN_BASE_ADDR_Y(buf_id));
746 gsc_write(0x0, GSC_IN_BASE_ADDR_CB(buf_id));
747 gsc_write(0x0, GSC_IN_BASE_ADDR_CR(buf_id));
748 break;
749 default:
750 /* bypass */
751 break;
752 }
753
754 return gsc_src_set_buf_seq(ctx, buf_id, buf_type);
755}
756
757static struct exynos_drm_ipp_ops gsc_src_ops = {
758 .set_fmt = gsc_src_set_fmt,
759 .set_transf = gsc_src_set_transf,
760 .set_size = gsc_src_set_size,
761 .set_addr = gsc_src_set_addr,
762};
763
764static int gsc_dst_set_fmt(struct device *dev, u32 fmt)
765{
766 struct gsc_context *ctx = get_gsc_context(dev);
767 struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv;
768 u32 cfg;
769
770 DRM_DEBUG_KMS("fmt[0x%x]\n", fmt);
771
772 cfg = gsc_read(GSC_OUT_CON);
773 cfg &= ~(GSC_OUT_RGB_TYPE_MASK | GSC_OUT_YUV422_1P_ORDER_MASK |
774 GSC_OUT_CHROMA_ORDER_MASK | GSC_OUT_FORMAT_MASK |
775 GSC_OUT_CHROM_STRIDE_SEL_MASK | GSC_OUT_RB_SWAP_MASK |
776 GSC_OUT_GLOBAL_ALPHA_MASK);
777
778 switch (fmt) {
779 case DRM_FORMAT_RGB565:
780 cfg |= GSC_OUT_RGB565;
781 break;
782 case DRM_FORMAT_XRGB8888:
783 cfg |= GSC_OUT_XRGB8888;
784 break;
785 case DRM_FORMAT_BGRX8888:
786 cfg |= (GSC_OUT_XRGB8888 | GSC_OUT_RB_SWAP);
787 break;
788 case DRM_FORMAT_YUYV:
789 cfg |= (GSC_OUT_YUV422_1P |
790 GSC_OUT_YUV422_1P_ORDER_LSB_Y |
791 GSC_OUT_CHROMA_ORDER_CBCR);
792 break;
793 case DRM_FORMAT_YVYU:
794 cfg |= (GSC_OUT_YUV422_1P |
795 GSC_OUT_YUV422_1P_ORDER_LSB_Y |
796 GSC_OUT_CHROMA_ORDER_CRCB);
797 break;
798 case DRM_FORMAT_UYVY:
799 cfg |= (GSC_OUT_YUV422_1P |
800 GSC_OUT_YUV422_1P_OEDER_LSB_C |
801 GSC_OUT_CHROMA_ORDER_CBCR);
802 break;
803 case DRM_FORMAT_VYUY:
804 cfg |= (GSC_OUT_YUV422_1P |
805 GSC_OUT_YUV422_1P_OEDER_LSB_C |
806 GSC_OUT_CHROMA_ORDER_CRCB);
807 break;
808 case DRM_FORMAT_NV21:
809 case DRM_FORMAT_NV61:
810 cfg |= (GSC_OUT_CHROMA_ORDER_CRCB | GSC_OUT_YUV420_2P);
811 break;
812 case DRM_FORMAT_YUV422:
813 case DRM_FORMAT_YUV420:
814 case DRM_FORMAT_YVU420:
815 cfg |= GSC_OUT_YUV420_3P;
816 break;
817 case DRM_FORMAT_NV12:
818 case DRM_FORMAT_NV16:
819 cfg |= (GSC_OUT_CHROMA_ORDER_CBCR |
820 GSC_OUT_YUV420_2P);
821 break;
822 default:
823 dev_err(ippdrv->dev, "invalid target yuv order 0x%x.\n", fmt);
824 return -EINVAL;
825 }
826
827 gsc_write(cfg, GSC_OUT_CON);
828
829 return 0;
830}
831
832static int gsc_dst_set_transf(struct device *dev,
833 enum drm_exynos_degree degree,
834 enum drm_exynos_flip flip, bool *swap)
835{
836 struct gsc_context *ctx = get_gsc_context(dev);
837 struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv;
838 u32 cfg;
839
840 DRM_DEBUG_KMS("degree[%d]flip[0x%x]\n", degree, flip);
841
842 cfg = gsc_read(GSC_IN_CON);
843 cfg &= ~GSC_IN_ROT_MASK;
844
845 switch (degree) {
846 case EXYNOS_DRM_DEGREE_0:
847 if (flip & EXYNOS_DRM_FLIP_VERTICAL)
848 cfg |= GSC_IN_ROT_XFLIP;
849 if (flip & EXYNOS_DRM_FLIP_HORIZONTAL)
850 cfg |= GSC_IN_ROT_YFLIP;
851 break;
852 case EXYNOS_DRM_DEGREE_90:
853 if (flip & EXYNOS_DRM_FLIP_VERTICAL)
854 cfg |= GSC_IN_ROT_90_XFLIP;
855 else if (flip & EXYNOS_DRM_FLIP_HORIZONTAL)
856 cfg |= GSC_IN_ROT_90_YFLIP;
857 else
858 cfg |= GSC_IN_ROT_90;
859 break;
860 case EXYNOS_DRM_DEGREE_180:
861 cfg |= GSC_IN_ROT_180;
862 if (flip & EXYNOS_DRM_FLIP_VERTICAL)
863 cfg &= ~GSC_IN_ROT_XFLIP;
864 if (flip & EXYNOS_DRM_FLIP_HORIZONTAL)
865 cfg &= ~GSC_IN_ROT_YFLIP;
866 break;
867 case EXYNOS_DRM_DEGREE_270:
868 cfg |= GSC_IN_ROT_270;
869 if (flip & EXYNOS_DRM_FLIP_VERTICAL)
870 cfg &= ~GSC_IN_ROT_XFLIP;
871 if (flip & EXYNOS_DRM_FLIP_HORIZONTAL)
872 cfg &= ~GSC_IN_ROT_YFLIP;
873 break;
874 default:
875 dev_err(ippdrv->dev, "invalid degree value %d.\n", degree);
876 return -EINVAL;
877 }
878
879 gsc_write(cfg, GSC_IN_CON);
880
881 ctx->rotation = (cfg & GSC_IN_ROT_90) ? 1 : 0;
882 *swap = ctx->rotation;
883
884 return 0;
885}
886
887static int gsc_get_ratio_shift(u32 src, u32 dst, u32 *ratio)
888{
889 DRM_DEBUG_KMS("src[%d]dst[%d]\n", src, dst);
890
891 if (src >= dst * 8) {
892 DRM_ERROR("failed to make ratio and shift.\n");
893 return -EINVAL;
894 } else if (src >= dst * 4)
895 *ratio = 4;
896 else if (src >= dst * 2)
897 *ratio = 2;
898 else
899 *ratio = 1;
900
901 return 0;
902}
903
904static void gsc_get_prescaler_shfactor(u32 hratio, u32 vratio, u32 *shfactor)
905{
906 if (hratio == 4 && vratio == 4)
907 *shfactor = 4;
908 else if ((hratio == 4 && vratio == 2) ||
909 (hratio == 2 && vratio == 4))
910 *shfactor = 3;
911 else if ((hratio == 4 && vratio == 1) ||
912 (hratio == 1 && vratio == 4) ||
913 (hratio == 2 && vratio == 2))
914 *shfactor = 2;
915 else if (hratio == 1 && vratio == 1)
916 *shfactor = 0;
917 else
918 *shfactor = 1;
919}
920
921static int gsc_set_prescaler(struct gsc_context *ctx, struct gsc_scaler *sc,
922 struct drm_exynos_pos *src, struct drm_exynos_pos *dst)
923{
924 struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv;
925 u32 cfg;
926 u32 src_w, src_h, dst_w, dst_h;
927 int ret = 0;
928
929 src_w = src->w;
930 src_h = src->h;
931
932 if (ctx->rotation) {
933 dst_w = dst->h;
934 dst_h = dst->w;
935 } else {
936 dst_w = dst->w;
937 dst_h = dst->h;
938 }
939
940 ret = gsc_get_ratio_shift(src_w, dst_w, &sc->pre_hratio);
941 if (ret) {
942 dev_err(ippdrv->dev, "failed to get ratio horizontal.\n");
943 return ret;
944 }
945
946 ret = gsc_get_ratio_shift(src_h, dst_h, &sc->pre_vratio);
947 if (ret) {
948 dev_err(ippdrv->dev, "failed to get ratio vertical.\n");
949 return ret;
950 }
951
952 DRM_DEBUG_KMS("pre_hratio[%d]pre_vratio[%d]\n",
953 sc->pre_hratio, sc->pre_vratio);
954
955 sc->main_hratio = (src_w << 16) / dst_w;
956 sc->main_vratio = (src_h << 16) / dst_h;
957
958 DRM_DEBUG_KMS("main_hratio[%ld]main_vratio[%ld]\n",
959 sc->main_hratio, sc->main_vratio);
960
961 gsc_get_prescaler_shfactor(sc->pre_hratio, sc->pre_vratio,
962 &sc->pre_shfactor);
963
964 DRM_DEBUG_KMS("pre_shfactor[%d]\n", sc->pre_shfactor);
965
966 cfg = (GSC_PRESC_SHFACTOR(sc->pre_shfactor) |
967 GSC_PRESC_H_RATIO(sc->pre_hratio) |
968 GSC_PRESC_V_RATIO(sc->pre_vratio));
969 gsc_write(cfg, GSC_PRE_SCALE_RATIO);
970
971 return ret;
972}
973
974static void gsc_set_h_coef(struct gsc_context *ctx, unsigned long main_hratio)
975{
976 int i, j, k, sc_ratio;
977
978 if (main_hratio <= GSC_SC_UP_MAX_RATIO)
979 sc_ratio = 0;
980 else if (main_hratio <= GSC_SC_DOWN_RATIO_7_8)
981 sc_ratio = 1;
982 else if (main_hratio <= GSC_SC_DOWN_RATIO_6_8)
983 sc_ratio = 2;
984 else if (main_hratio <= GSC_SC_DOWN_RATIO_5_8)
985 sc_ratio = 3;
986 else if (main_hratio <= GSC_SC_DOWN_RATIO_4_8)
987 sc_ratio = 4;
988 else if (main_hratio <= GSC_SC_DOWN_RATIO_3_8)
989 sc_ratio = 5;
990 else
991 sc_ratio = 6;
992
993 for (i = 0; i < GSC_COEF_PHASE; i++)
994 for (j = 0; j < GSC_COEF_H_8T; j++)
995 for (k = 0; k < GSC_COEF_DEPTH; k++)
996 gsc_write(h_coef_8t[sc_ratio][i][j],
997 GSC_HCOEF(i, j, k));
998}
999
1000static void gsc_set_v_coef(struct gsc_context *ctx, unsigned long main_vratio)
1001{
1002 int i, j, k, sc_ratio;
1003
1004 if (main_vratio <= GSC_SC_UP_MAX_RATIO)
1005 sc_ratio = 0;
1006 else if (main_vratio <= GSC_SC_DOWN_RATIO_7_8)
1007 sc_ratio = 1;
1008 else if (main_vratio <= GSC_SC_DOWN_RATIO_6_8)
1009 sc_ratio = 2;
1010 else if (main_vratio <= GSC_SC_DOWN_RATIO_5_8)
1011 sc_ratio = 3;
1012 else if (main_vratio <= GSC_SC_DOWN_RATIO_4_8)
1013 sc_ratio = 4;
1014 else if (main_vratio <= GSC_SC_DOWN_RATIO_3_8)
1015 sc_ratio = 5;
1016 else
1017 sc_ratio = 6;
1018
1019 for (i = 0; i < GSC_COEF_PHASE; i++)
1020 for (j = 0; j < GSC_COEF_V_4T; j++)
1021 for (k = 0; k < GSC_COEF_DEPTH; k++)
1022 gsc_write(v_coef_4t[sc_ratio][i][j],
1023 GSC_VCOEF(i, j, k));
1024}
1025
1026static void gsc_set_scaler(struct gsc_context *ctx, struct gsc_scaler *sc)
1027{
1028 u32 cfg;
1029
1030 DRM_DEBUG_KMS("main_hratio[%ld]main_vratio[%ld]\n",
1031 sc->main_hratio, sc->main_vratio);
1032
1033 gsc_set_h_coef(ctx, sc->main_hratio);
1034 cfg = GSC_MAIN_H_RATIO_VALUE(sc->main_hratio);
1035 gsc_write(cfg, GSC_MAIN_H_RATIO);
1036
1037 gsc_set_v_coef(ctx, sc->main_vratio);
1038 cfg = GSC_MAIN_V_RATIO_VALUE(sc->main_vratio);
1039 gsc_write(cfg, GSC_MAIN_V_RATIO);
1040}
1041
1042static int gsc_dst_set_size(struct device *dev, int swap,
1043 struct drm_exynos_pos *pos, struct drm_exynos_sz *sz)
1044{
1045 struct gsc_context *ctx = get_gsc_context(dev);
1046 struct drm_exynos_pos img_pos = *pos;
1047 struct gsc_scaler *sc = &ctx->sc;
1048 u32 cfg;
1049
1050 DRM_DEBUG_KMS("swap[%d]x[%d]y[%d]w[%d]h[%d]\n",
1051 swap, pos->x, pos->y, pos->w, pos->h);
1052
1053 if (swap) {
1054 img_pos.w = pos->h;
1055 img_pos.h = pos->w;
1056 }
1057
1058 /* pixel offset */
1059 cfg = (GSC_DSTIMG_OFFSET_X(pos->x) |
1060 GSC_DSTIMG_OFFSET_Y(pos->y));
1061 gsc_write(cfg, GSC_DSTIMG_OFFSET);
1062
1063 /* scaled size */
1064 cfg = (GSC_SCALED_WIDTH(img_pos.w) | GSC_SCALED_HEIGHT(img_pos.h));
1065 gsc_write(cfg, GSC_SCALED_SIZE);
1066
1067 DRM_DEBUG_KMS("hsize[%d]vsize[%d]\n", sz->hsize, sz->vsize);
1068
1069 /* original size */
1070 cfg = gsc_read(GSC_DSTIMG_SIZE);
1071 cfg &= ~(GSC_DSTIMG_HEIGHT_MASK |
1072 GSC_DSTIMG_WIDTH_MASK);
1073 cfg |= (GSC_DSTIMG_WIDTH(sz->hsize) |
1074 GSC_DSTIMG_HEIGHT(sz->vsize));
1075 gsc_write(cfg, GSC_DSTIMG_SIZE);
1076
1077 cfg = gsc_read(GSC_OUT_CON);
1078 cfg &= ~GSC_OUT_RGB_TYPE_MASK;
1079
1080 DRM_DEBUG_KMS("width[%d]range[%d]\n", pos->w, sc->range);
1081
1082 if (pos->w >= GSC_WIDTH_ITU_709)
1083 if (sc->range)
1084 cfg |= GSC_OUT_RGB_HD_WIDE;
1085 else
1086 cfg |= GSC_OUT_RGB_HD_NARROW;
1087 else
1088 if (sc->range)
1089 cfg |= GSC_OUT_RGB_SD_WIDE;
1090 else
1091 cfg |= GSC_OUT_RGB_SD_NARROW;
1092
1093 gsc_write(cfg, GSC_OUT_CON);
1094
1095 return 0;
1096}
1097
1098static int gsc_dst_get_buf_seq(struct gsc_context *ctx)
1099{
1100 u32 cfg, i, buf_num = GSC_REG_SZ;
1101 u32 mask = 0x00000001;
1102
1103 cfg = gsc_read(GSC_OUT_BASE_ADDR_Y_MASK);
1104
1105 for (i = 0; i < GSC_REG_SZ; i++)
1106 if (cfg & (mask << i))
1107 buf_num--;
1108
1109 DRM_DEBUG_KMS("buf_num[%d]\n", buf_num);
1110
1111 return buf_num;
1112}
1113
1114static int gsc_dst_set_buf_seq(struct gsc_context *ctx, u32 buf_id,
1115 enum drm_exynos_ipp_buf_type buf_type)
1116{
1117 struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv;
1118 bool masked;
1119 u32 cfg;
1120 u32 mask = 0x00000001 << buf_id;
1121 int ret = 0;
1122
1123 DRM_DEBUG_KMS("buf_id[%d]buf_type[%d]\n", buf_id, buf_type);
1124
1125 mutex_lock(&ctx->lock);
1126
1127 /* mask register set */
1128 cfg = gsc_read(GSC_OUT_BASE_ADDR_Y_MASK);
1129
1130 switch (buf_type) {
1131 case IPP_BUF_ENQUEUE:
1132 masked = false;
1133 break;
1134 case IPP_BUF_DEQUEUE:
1135 masked = true;
1136 break;
1137 default:
1138 dev_err(ippdrv->dev, "invalid buf ctrl parameter.\n");
1139 ret = -EINVAL;
1140 goto err_unlock;
1141 }
1142
1143 /* sequence id */
1144 cfg &= ~mask;
1145 cfg |= masked << buf_id;
1146 gsc_write(cfg, GSC_OUT_BASE_ADDR_Y_MASK);
1147 gsc_write(cfg, GSC_OUT_BASE_ADDR_CB_MASK);
1148 gsc_write(cfg, GSC_OUT_BASE_ADDR_CR_MASK);
1149
1150 /* interrupt enable */
1151 if (buf_type == IPP_BUF_ENQUEUE &&
1152 gsc_dst_get_buf_seq(ctx) >= GSC_BUF_START)
1153 gsc_handle_irq(ctx, true, false, true);
1154
1155 /* interrupt disable */
1156 if (buf_type == IPP_BUF_DEQUEUE &&
1157 gsc_dst_get_buf_seq(ctx) <= GSC_BUF_STOP)
1158 gsc_handle_irq(ctx, false, false, true);
1159
1160err_unlock:
1161 mutex_unlock(&ctx->lock);
1162 return ret;
1163}
1164
1165static int gsc_dst_set_addr(struct device *dev,
1166 struct drm_exynos_ipp_buf_info *buf_info, u32 buf_id,
1167 enum drm_exynos_ipp_buf_type buf_type)
1168{
1169 struct gsc_context *ctx = get_gsc_context(dev);
1170 struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv;
1171 struct drm_exynos_ipp_cmd_node *c_node = ippdrv->c_node;
1172 struct drm_exynos_ipp_property *property;
1173
1174 if (!c_node) {
1175 DRM_ERROR("failed to get c_node.\n");
1176 return -EFAULT;
1177 }
1178
1179 property = &c_node->property;
1180
1181 DRM_DEBUG_KMS("prop_id[%d]buf_id[%d]buf_type[%d]\n",
1182 property->prop_id, buf_id, buf_type);
1183
1184 if (buf_id > GSC_MAX_DST) {
1185 dev_info(ippdrv->dev, "invalid buf_id %d.\n", buf_id);
1186 return -EINVAL;
1187 }
1188
1189 /* address register set */
1190 switch (buf_type) {
1191 case IPP_BUF_ENQUEUE:
1192 gsc_write(buf_info->base[EXYNOS_DRM_PLANAR_Y],
1193 GSC_OUT_BASE_ADDR_Y(buf_id));
1194 gsc_write(buf_info->base[EXYNOS_DRM_PLANAR_CB],
1195 GSC_OUT_BASE_ADDR_CB(buf_id));
1196 gsc_write(buf_info->base[EXYNOS_DRM_PLANAR_CR],
1197 GSC_OUT_BASE_ADDR_CR(buf_id));
1198 break;
1199 case IPP_BUF_DEQUEUE:
1200 gsc_write(0x0, GSC_OUT_BASE_ADDR_Y(buf_id));
1201 gsc_write(0x0, GSC_OUT_BASE_ADDR_CB(buf_id));
1202 gsc_write(0x0, GSC_OUT_BASE_ADDR_CR(buf_id));
1203 break;
1204 default:
1205 /* bypass */
1206 break;
1207 }
1208
1209 return gsc_dst_set_buf_seq(ctx, buf_id, buf_type);
1210}
1211
1212static struct exynos_drm_ipp_ops gsc_dst_ops = {
1213 .set_fmt = gsc_dst_set_fmt,
1214 .set_transf = gsc_dst_set_transf,
1215 .set_size = gsc_dst_set_size,
1216 .set_addr = gsc_dst_set_addr,
1217};
1218
1219static int gsc_clk_ctrl(struct gsc_context *ctx, bool enable)
1220{
1221 DRM_DEBUG_KMS("enable[%d]\n", enable);
1222
1223 if (enable) {
1224 clk_prepare_enable(ctx->gsc_clk);
1225 ctx->suspended = false;
1226 } else {
1227 clk_disable_unprepare(ctx->gsc_clk);
1228 ctx->suspended = true;
1229 }
1230
1231 return 0;
1232}
1233
1234static int gsc_get_src_buf_index(struct gsc_context *ctx)
1235{
1236 u32 cfg, curr_index, i;
1237 u32 buf_id = GSC_MAX_SRC;
1238 int ret;
1239
1240 DRM_DEBUG_KMS("gsc id[%d]\n", ctx->id);
1241
1242 cfg = gsc_read(GSC_IN_BASE_ADDR_Y_MASK);
1243 curr_index = GSC_IN_CURR_GET_INDEX(cfg);
1244
1245 for (i = curr_index; i < GSC_MAX_SRC; i++) {
1246 if (!((cfg >> i) & 0x1)) {
1247 buf_id = i;
1248 break;
1249 }
1250 }
1251
1252 if (buf_id == GSC_MAX_SRC) {
1253 DRM_ERROR("failed to get in buffer index.\n");
1254 return -EINVAL;
1255 }
1256
1257 ret = gsc_src_set_buf_seq(ctx, buf_id, IPP_BUF_DEQUEUE);
1258 if (ret < 0) {
1259 DRM_ERROR("failed to dequeue.\n");
1260 return ret;
1261 }
1262
1263 DRM_DEBUG_KMS("cfg[0x%x]curr_index[%d]buf_id[%d]\n", cfg,
1264 curr_index, buf_id);
1265
1266 return buf_id;
1267}
1268
1269static int gsc_get_dst_buf_index(struct gsc_context *ctx)
1270{
1271 u32 cfg, curr_index, i;
1272 u32 buf_id = GSC_MAX_DST;
1273 int ret;
1274
1275 DRM_DEBUG_KMS("gsc id[%d]\n", ctx->id);
1276
1277 cfg = gsc_read(GSC_OUT_BASE_ADDR_Y_MASK);
1278 curr_index = GSC_OUT_CURR_GET_INDEX(cfg);
1279
1280 for (i = curr_index; i < GSC_MAX_DST; i++) {
1281 if (!((cfg >> i) & 0x1)) {
1282 buf_id = i;
1283 break;
1284 }
1285 }
1286
1287 if (buf_id == GSC_MAX_DST) {
1288 DRM_ERROR("failed to get out buffer index.\n");
1289 return -EINVAL;
1290 }
1291
1292 ret = gsc_dst_set_buf_seq(ctx, buf_id, IPP_BUF_DEQUEUE);
1293 if (ret < 0) {
1294 DRM_ERROR("failed to dequeue.\n");
1295 return ret;
1296 }
1297
1298 DRM_DEBUG_KMS("cfg[0x%x]curr_index[%d]buf_id[%d]\n", cfg,
1299 curr_index, buf_id);
1300
1301 return buf_id;
1302}
1303
1304static irqreturn_t gsc_irq_handler(int irq, void *dev_id)
1305{
1306 struct gsc_context *ctx = dev_id;
1307 struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv;
1308 struct drm_exynos_ipp_cmd_node *c_node = ippdrv->c_node;
1309 struct drm_exynos_ipp_event_work *event_work =
1310 c_node->event_work;
1311 u32 status;
1312 int buf_id[EXYNOS_DRM_OPS_MAX];
1313
1314 DRM_DEBUG_KMS("gsc id[%d]\n", ctx->id);
1315
1316 status = gsc_read(GSC_IRQ);
1317 if (status & GSC_IRQ_STATUS_OR_IRQ) {
1318 dev_err(ippdrv->dev, "occurred overflow at %d, status 0x%x.\n",
1319 ctx->id, status);
1320 return IRQ_NONE;
1321 }
1322
1323 if (status & GSC_IRQ_STATUS_OR_FRM_DONE) {
1324 dev_dbg(ippdrv->dev, "occurred frame done at %d, status 0x%x.\n",
1325 ctx->id, status);
1326
1327 buf_id[EXYNOS_DRM_OPS_SRC] = gsc_get_src_buf_index(ctx);
1328 if (buf_id[EXYNOS_DRM_OPS_SRC] < 0)
1329 return IRQ_HANDLED;
1330
1331 buf_id[EXYNOS_DRM_OPS_DST] = gsc_get_dst_buf_index(ctx);
1332 if (buf_id[EXYNOS_DRM_OPS_DST] < 0)
1333 return IRQ_HANDLED;
1334
1335 DRM_DEBUG_KMS("buf_id_src[%d]buf_id_dst[%d]\n",
1336 buf_id[EXYNOS_DRM_OPS_SRC], buf_id[EXYNOS_DRM_OPS_DST]);
1337
1338 event_work->ippdrv = ippdrv;
1339 event_work->buf_id[EXYNOS_DRM_OPS_SRC] =
1340 buf_id[EXYNOS_DRM_OPS_SRC];
1341 event_work->buf_id[EXYNOS_DRM_OPS_DST] =
1342 buf_id[EXYNOS_DRM_OPS_DST];
1343 queue_work(ippdrv->event_workq, &event_work->work);
1344 }
1345
1346 return IRQ_HANDLED;
1347}
1348
1349static int gsc_init_prop_list(struct exynos_drm_ippdrv *ippdrv)
1350{
1351 struct drm_exynos_ipp_prop_list *prop_list = &ippdrv->prop_list;
1352
1353 prop_list->version = 1;
1354 prop_list->writeback = 1;
1355 prop_list->refresh_min = GSC_REFRESH_MIN;
1356 prop_list->refresh_max = GSC_REFRESH_MAX;
1357 prop_list->flip = (1 << EXYNOS_DRM_FLIP_VERTICAL) |
1358 (1 << EXYNOS_DRM_FLIP_HORIZONTAL);
1359 prop_list->degree = (1 << EXYNOS_DRM_DEGREE_0) |
1360 (1 << EXYNOS_DRM_DEGREE_90) |
1361 (1 << EXYNOS_DRM_DEGREE_180) |
1362 (1 << EXYNOS_DRM_DEGREE_270);
1363 prop_list->csc = 1;
1364 prop_list->crop = 1;
1365 prop_list->crop_max.hsize = GSC_CROP_MAX;
1366 prop_list->crop_max.vsize = GSC_CROP_MAX;
1367 prop_list->crop_min.hsize = GSC_CROP_MIN;
1368 prop_list->crop_min.vsize = GSC_CROP_MIN;
1369 prop_list->scale = 1;
1370 prop_list->scale_max.hsize = GSC_SCALE_MAX;
1371 prop_list->scale_max.vsize = GSC_SCALE_MAX;
1372 prop_list->scale_min.hsize = GSC_SCALE_MIN;
1373 prop_list->scale_min.vsize = GSC_SCALE_MIN;
1374
1375 return 0;
1376}
1377
1378static inline bool gsc_check_drm_flip(enum drm_exynos_flip flip)
1379{
1380 switch (flip) {
1381 case EXYNOS_DRM_FLIP_NONE:
1382 case EXYNOS_DRM_FLIP_VERTICAL:
1383 case EXYNOS_DRM_FLIP_HORIZONTAL:
1384 case EXYNOS_DRM_FLIP_BOTH:
1385 return true;
1386 default:
1387 DRM_DEBUG_KMS("invalid flip\n");
1388 return false;
1389 }
1390}
1391
1392static int gsc_ippdrv_check_property(struct device *dev,
1393 struct drm_exynos_ipp_property *property)
1394{
1395 struct gsc_context *ctx = get_gsc_context(dev);
1396 struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv;
1397 struct drm_exynos_ipp_prop_list *pp = &ippdrv->prop_list;
1398 struct drm_exynos_ipp_config *config;
1399 struct drm_exynos_pos *pos;
1400 struct drm_exynos_sz *sz;
1401 bool swap;
1402 int i;
1403
1404 for_each_ipp_ops(i) {
1405 if ((i == EXYNOS_DRM_OPS_SRC) &&
1406 (property->cmd == IPP_CMD_WB))
1407 continue;
1408
1409 config = &property->config[i];
1410 pos = &config->pos;
1411 sz = &config->sz;
1412
1413 /* check for flip */
1414 if (!gsc_check_drm_flip(config->flip)) {
1415 DRM_ERROR("invalid flip.\n");
1416 goto err_property;
1417 }
1418
1419 /* check for degree */
1420 switch (config->degree) {
1421 case EXYNOS_DRM_DEGREE_90:
1422 case EXYNOS_DRM_DEGREE_270:
1423 swap = true;
1424 break;
1425 case EXYNOS_DRM_DEGREE_0:
1426 case EXYNOS_DRM_DEGREE_180:
1427 swap = false;
1428 break;
1429 default:
1430 DRM_ERROR("invalid degree.\n");
1431 goto err_property;
1432 }
1433
1434 /* check for buffer bound */
1435 if ((pos->x + pos->w > sz->hsize) ||
1436 (pos->y + pos->h > sz->vsize)) {
1437 DRM_ERROR("out of buf bound.\n");
1438 goto err_property;
1439 }
1440
1441 /* check for crop */
1442 if ((i == EXYNOS_DRM_OPS_SRC) && (pp->crop)) {
1443 if (swap) {
1444 if ((pos->h < pp->crop_min.hsize) ||
1445 (sz->vsize > pp->crop_max.hsize) ||
1446 (pos->w < pp->crop_min.vsize) ||
1447 (sz->hsize > pp->crop_max.vsize)) {
1448 DRM_ERROR("out of crop size.\n");
1449 goto err_property;
1450 }
1451 } else {
1452 if ((pos->w < pp->crop_min.hsize) ||
1453 (sz->hsize > pp->crop_max.hsize) ||
1454 (pos->h < pp->crop_min.vsize) ||
1455 (sz->vsize > pp->crop_max.vsize)) {
1456 DRM_ERROR("out of crop size.\n");
1457 goto err_property;
1458 }
1459 }
1460 }
1461
1462 /* check for scale */
1463 if ((i == EXYNOS_DRM_OPS_DST) && (pp->scale)) {
1464 if (swap) {
1465 if ((pos->h < pp->scale_min.hsize) ||
1466 (sz->vsize > pp->scale_max.hsize) ||
1467 (pos->w < pp->scale_min.vsize) ||
1468 (sz->hsize > pp->scale_max.vsize)) {
1469 DRM_ERROR("out of scale size.\n");
1470 goto err_property;
1471 }
1472 } else {
1473 if ((pos->w < pp->scale_min.hsize) ||
1474 (sz->hsize > pp->scale_max.hsize) ||
1475 (pos->h < pp->scale_min.vsize) ||
1476 (sz->vsize > pp->scale_max.vsize)) {
1477 DRM_ERROR("out of scale size.\n");
1478 goto err_property;
1479 }
1480 }
1481 }
1482 }
1483
1484 return 0;
1485
1486err_property:
1487 for_each_ipp_ops(i) {
1488 if ((i == EXYNOS_DRM_OPS_SRC) &&
1489 (property->cmd == IPP_CMD_WB))
1490 continue;
1491
1492 config = &property->config[i];
1493 pos = &config->pos;
1494 sz = &config->sz;
1495
1496 DRM_ERROR("[%s]f[%d]r[%d]pos[%d %d %d %d]sz[%d %d]\n",
1497 i ? "dst" : "src", config->flip, config->degree,
1498 pos->x, pos->y, pos->w, pos->h,
1499 sz->hsize, sz->vsize);
1500 }
1501
1502 return -EINVAL;
1503}
1504
1505
1506static int gsc_ippdrv_reset(struct device *dev)
1507{
1508 struct gsc_context *ctx = get_gsc_context(dev);
1509 struct gsc_scaler *sc = &ctx->sc;
1510 int ret;
1511
1512 /* reset h/w block */
1513 ret = gsc_sw_reset(ctx);
1514 if (ret < 0) {
1515 dev_err(dev, "failed to reset hardware.\n");
1516 return ret;
1517 }
1518
1519 /* scaler setting */
1520 memset(&ctx->sc, 0x0, sizeof(ctx->sc));
1521 sc->range = true;
1522
1523 return 0;
1524}
1525
1526static int gsc_ippdrv_start(struct device *dev, enum drm_exynos_ipp_cmd cmd)
1527{
1528 struct gsc_context *ctx = get_gsc_context(dev);
1529 struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv;
1530 struct drm_exynos_ipp_cmd_node *c_node = ippdrv->c_node;
1531 struct drm_exynos_ipp_property *property;
1532 struct drm_exynos_ipp_config *config;
1533 struct drm_exynos_pos img_pos[EXYNOS_DRM_OPS_MAX];
1534 struct drm_exynos_ipp_set_wb set_wb;
1535 u32 cfg;
1536 int ret, i;
1537
1538 DRM_DEBUG_KMS("cmd[%d]\n", cmd);
1539
1540 if (!c_node) {
1541 DRM_ERROR("failed to get c_node.\n");
1542 return -EINVAL;
1543 }
1544
1545 property = &c_node->property;
1546
1547 gsc_handle_irq(ctx, true, false, true);
1548
1549 for_each_ipp_ops(i) {
1550 config = &property->config[i];
1551 img_pos[i] = config->pos;
1552 }
1553
1554 switch (cmd) {
1555 case IPP_CMD_M2M:
1556 /* enable one shot */
1557 cfg = gsc_read(GSC_ENABLE);
1558 cfg &= ~(GSC_ENABLE_ON_CLEAR_MASK |
1559 GSC_ENABLE_CLK_GATE_MODE_MASK);
1560 cfg |= GSC_ENABLE_ON_CLEAR_ONESHOT;
1561 gsc_write(cfg, GSC_ENABLE);
1562
1563 /* src dma memory */
1564 cfg = gsc_read(GSC_IN_CON);
1565 cfg &= ~(GSC_IN_PATH_MASK | GSC_IN_LOCAL_SEL_MASK);
1566 cfg |= GSC_IN_PATH_MEMORY;
1567 gsc_write(cfg, GSC_IN_CON);
1568
1569 /* dst dma memory */
1570 cfg = gsc_read(GSC_OUT_CON);
1571 cfg |= GSC_OUT_PATH_MEMORY;
1572 gsc_write(cfg, GSC_OUT_CON);
1573 break;
1574 case IPP_CMD_WB:
1575 set_wb.enable = 1;
1576 set_wb.refresh = property->refresh_rate;
1577 gsc_set_gscblk_fimd_wb(ctx, set_wb.enable);
1578 exynos_drm_ippnb_send_event(IPP_SET_WRITEBACK, (void *)&set_wb);
1579
1580 /* src local path */
1581 cfg = gsc_read(GSC_IN_CON);
1582 cfg &= ~(GSC_IN_PATH_MASK | GSC_IN_LOCAL_SEL_MASK);
1583 cfg |= (GSC_IN_PATH_LOCAL | GSC_IN_LOCAL_FIMD_WB);
1584 gsc_write(cfg, GSC_IN_CON);
1585
1586 /* dst dma memory */
1587 cfg = gsc_read(GSC_OUT_CON);
1588 cfg |= GSC_OUT_PATH_MEMORY;
1589 gsc_write(cfg, GSC_OUT_CON);
1590 break;
1591 case IPP_CMD_OUTPUT:
1592 /* src dma memory */
1593 cfg = gsc_read(GSC_IN_CON);
1594 cfg &= ~(GSC_IN_PATH_MASK | GSC_IN_LOCAL_SEL_MASK);
1595 cfg |= GSC_IN_PATH_MEMORY;
1596 gsc_write(cfg, GSC_IN_CON);
1597
1598 /* dst local path */
1599 cfg = gsc_read(GSC_OUT_CON);
1600 cfg |= GSC_OUT_PATH_MEMORY;
1601 gsc_write(cfg, GSC_OUT_CON);
1602 break;
1603 default:
1604 ret = -EINVAL;
1605 dev_err(dev, "invalid operations.\n");
1606 return ret;
1607 }
1608
1609 ret = gsc_set_prescaler(ctx, &ctx->sc,
1610 &img_pos[EXYNOS_DRM_OPS_SRC],
1611 &img_pos[EXYNOS_DRM_OPS_DST]);
1612 if (ret) {
1613 dev_err(dev, "failed to set prescaler.\n");
1614 return ret;
1615 }
1616
1617 gsc_set_scaler(ctx, &ctx->sc);
1618
1619 cfg = gsc_read(GSC_ENABLE);
1620 cfg |= GSC_ENABLE_ON;
1621 gsc_write(cfg, GSC_ENABLE);
1622
1623 return 0;
1624}
1625
1626static void gsc_ippdrv_stop(struct device *dev, enum drm_exynos_ipp_cmd cmd)
1627{
1628 struct gsc_context *ctx = get_gsc_context(dev);
1629 struct drm_exynos_ipp_set_wb set_wb = {0, 0};
1630 u32 cfg;
1631
1632 DRM_DEBUG_KMS("cmd[%d]\n", cmd);
1633
1634 switch (cmd) {
1635 case IPP_CMD_M2M:
1636 /* bypass */
1637 break;
1638 case IPP_CMD_WB:
1639 gsc_set_gscblk_fimd_wb(ctx, set_wb.enable);
1640 exynos_drm_ippnb_send_event(IPP_SET_WRITEBACK, (void *)&set_wb);
1641 break;
1642 case IPP_CMD_OUTPUT:
1643 default:
1644 dev_err(dev, "invalid operations.\n");
1645 break;
1646 }
1647
1648 gsc_handle_irq(ctx, false, false, true);
1649
1650 /* reset sequence */
1651 gsc_write(0xff, GSC_OUT_BASE_ADDR_Y_MASK);
1652 gsc_write(0xff, GSC_OUT_BASE_ADDR_CB_MASK);
1653 gsc_write(0xff, GSC_OUT_BASE_ADDR_CR_MASK);
1654
1655 cfg = gsc_read(GSC_ENABLE);
1656 cfg &= ~GSC_ENABLE_ON;
1657 gsc_write(cfg, GSC_ENABLE);
1658}
1659
1660static int gsc_probe(struct platform_device *pdev)
1661{
1662 struct device *dev = &pdev->dev;
1663 struct gsc_context *ctx;
1664 struct resource *res;
1665 struct exynos_drm_ippdrv *ippdrv;
1666 int ret;
1667
1668 ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
1669 if (!ctx)
1670 return -ENOMEM;
1671
1672 if (dev->of_node) {
1673 ctx->sysreg = syscon_regmap_lookup_by_phandle(dev->of_node,
1674 "samsung,sysreg");
1675 if (IS_ERR(ctx->sysreg)) {
1676 dev_warn(dev, "failed to get system register.\n");
1677 ctx->sysreg = NULL;
1678 }
1679 }
1680
1681 /* clock control */
1682 ctx->gsc_clk = devm_clk_get(dev, "gscl");
1683 if (IS_ERR(ctx->gsc_clk)) {
1684 dev_err(dev, "failed to get gsc clock.\n");
1685 return PTR_ERR(ctx->gsc_clk);
1686 }
1687
1688 /* resource memory */
1689 ctx->regs_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1690 ctx->regs = devm_ioremap_resource(dev, ctx->regs_res);
1691 if (IS_ERR(ctx->regs))
1692 return PTR_ERR(ctx->regs);
1693
1694 /* resource irq */
1695 res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
1696 if (!res) {
1697 dev_err(dev, "failed to request irq resource.\n");
1698 return -ENOENT;
1699 }
1700
1701 ctx->irq = res->start;
1702 ret = devm_request_threaded_irq(dev, ctx->irq, NULL, gsc_irq_handler,
1703 IRQF_ONESHOT, "drm_gsc", ctx);
1704 if (ret < 0) {
1705 dev_err(dev, "failed to request irq.\n");
1706 return ret;
1707 }
1708
1709 /* context initailization */
1710 ctx->id = pdev->id;
1711
1712 ippdrv = &ctx->ippdrv;
1713 ippdrv->dev = dev;
1714 ippdrv->ops[EXYNOS_DRM_OPS_SRC] = &gsc_src_ops;
1715 ippdrv->ops[EXYNOS_DRM_OPS_DST] = &gsc_dst_ops;
1716 ippdrv->check_property = gsc_ippdrv_check_property;
1717 ippdrv->reset = gsc_ippdrv_reset;
1718 ippdrv->start = gsc_ippdrv_start;
1719 ippdrv->stop = gsc_ippdrv_stop;
1720 ret = gsc_init_prop_list(ippdrv);
1721 if (ret < 0) {
1722 dev_err(dev, "failed to init property list.\n");
1723 return ret;
1724 }
1725
1726 DRM_DEBUG_KMS("id[%d]ippdrv[%pK]\n", ctx->id, ippdrv);
1727
1728 mutex_init(&ctx->lock);
1729 platform_set_drvdata(pdev, ctx);
1730
1731 pm_runtime_enable(dev);
1732
1733 ret = exynos_drm_ippdrv_register(ippdrv);
1734 if (ret < 0) {
1735 dev_err(dev, "failed to register drm gsc device.\n");
1736 goto err_ippdrv_register;
1737 }
1738
1739 dev_info(dev, "drm gsc registered successfully.\n");
1740
1741 return 0;
1742
1743err_ippdrv_register:
1744 pm_runtime_disable(dev);
1745 return ret;
1746}
1747
1748static int gsc_remove(struct platform_device *pdev)
1749{
1750 struct device *dev = &pdev->dev;
1751 struct gsc_context *ctx = get_gsc_context(dev);
1752 struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv;
1753
1754 exynos_drm_ippdrv_unregister(ippdrv);
1755 mutex_destroy(&ctx->lock);
1756
1757 pm_runtime_set_suspended(dev);
1758 pm_runtime_disable(dev);
1759
1760 return 0;
1761}
1762
1763static int __maybe_unused gsc_runtime_suspend(struct device *dev)
1764{
1765 struct gsc_context *ctx = get_gsc_context(dev);
1766
1767 DRM_DEBUG_KMS("id[%d]\n", ctx->id);
1768
1769 return gsc_clk_ctrl(ctx, false);
1770}
1771
1772static int __maybe_unused gsc_runtime_resume(struct device *dev)
1773{
1774 struct gsc_context *ctx = get_gsc_context(dev);
1775
1776 DRM_DEBUG_KMS("id[%d]\n", ctx->id);
1777
1778 return gsc_clk_ctrl(ctx, true);
1779}
1780
1781static const struct dev_pm_ops gsc_pm_ops = {
1782 SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
1783 pm_runtime_force_resume)
1784 SET_RUNTIME_PM_OPS(gsc_runtime_suspend, gsc_runtime_resume, NULL)
1785};
1786
1787static const struct of_device_id exynos_drm_gsc_of_match[] = {
1788 { .compatible = "samsung,exynos5-gsc" },
1789 { },
1790};
1791MODULE_DEVICE_TABLE(of, exynos_drm_gsc_of_match);
1792
1793struct platform_driver gsc_driver = {
1794 .probe = gsc_probe,
1795 .remove = gsc_remove,
1796 .driver = {
1797 .name = "exynos-drm-gsc",
1798 .owner = THIS_MODULE,
1799 .pm = &gsc_pm_ops,
1800 .of_match_table = of_match_ptr(exynos_drm_gsc_of_match),
1801 },
1802};
1803