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Merge tag 'rtc-4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux
[deliverable/linux.git] / drivers / media / platform / exynos4-is / fimc-is.c
1 /*
2 * Samsung EXYNOS4x12 FIMC-IS (Imaging Subsystem) driver
3 *
4 * Copyright (C) 2013 Samsung Electronics Co., Ltd.
5 *
6 * Authors: Sylwester Nawrocki <s.nawrocki@samsung.com>
7 * Younghwan Joo <yhwan.joo@samsung.com>
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
12 */
13 #define pr_fmt(fmt) "%s:%d " fmt, __func__, __LINE__
14
15 #include <linux/device.h>
16 #include <linux/debugfs.h>
17 #include <linux/delay.h>
18 #include <linux/dma-contiguous.h>
19 #include <linux/errno.h>
20 #include <linux/firmware.h>
21 #include <linux/interrupt.h>
22 #include <linux/kernel.h>
23 #include <linux/module.h>
24 #include <linux/i2c.h>
25 #include <linux/of_irq.h>
26 #include <linux/of_address.h>
27 #include <linux/of_graph.h>
28 #include <linux/of_platform.h>
29 #include <linux/platform_device.h>
30 #include <linux/pm_runtime.h>
31 #include <linux/slab.h>
32 #include <linux/types.h>
33 #include <linux/videodev2.h>
34 #include <media/videobuf2-dma-contig.h>
35
36 #include "media-dev.h"
37 #include "fimc-is.h"
38 #include "fimc-is-command.h"
39 #include "fimc-is-errno.h"
40 #include "fimc-is-i2c.h"
41 #include "fimc-is-param.h"
42 #include "fimc-is-regs.h"
43
44
45 static char *fimc_is_clocks[ISS_CLKS_MAX] = {
46 [ISS_CLK_PPMUISPX] = "ppmuispx",
47 [ISS_CLK_PPMUISPMX] = "ppmuispmx",
48 [ISS_CLK_LITE0] = "lite0",
49 [ISS_CLK_LITE1] = "lite1",
50 [ISS_CLK_MPLL] = "mpll",
51 [ISS_CLK_ISP] = "isp",
52 [ISS_CLK_DRC] = "drc",
53 [ISS_CLK_FD] = "fd",
54 [ISS_CLK_MCUISP] = "mcuisp",
55 [ISS_CLK_UART] = "uart",
56 [ISS_CLK_ISP_DIV0] = "ispdiv0",
57 [ISS_CLK_ISP_DIV1] = "ispdiv1",
58 [ISS_CLK_MCUISP_DIV0] = "mcuispdiv0",
59 [ISS_CLK_MCUISP_DIV1] = "mcuispdiv1",
60 [ISS_CLK_ACLK200] = "aclk200",
61 [ISS_CLK_ACLK200_DIV] = "div_aclk200",
62 [ISS_CLK_ACLK400MCUISP] = "aclk400mcuisp",
63 [ISS_CLK_ACLK400MCUISP_DIV] = "div_aclk400mcuisp",
64 };
65
66 static void fimc_is_put_clocks(struct fimc_is *is)
67 {
68 int i;
69
70 for (i = 0; i < ISS_CLKS_MAX; i++) {
71 if (IS_ERR(is->clocks[i]))
72 continue;
73 clk_put(is->clocks[i]);
74 is->clocks[i] = ERR_PTR(-EINVAL);
75 }
76 }
77
78 static int fimc_is_get_clocks(struct fimc_is *is)
79 {
80 int i, ret;
81
82 for (i = 0; i < ISS_CLKS_MAX; i++)
83 is->clocks[i] = ERR_PTR(-EINVAL);
84
85 for (i = 0; i < ISS_CLKS_MAX; i++) {
86 is->clocks[i] = clk_get(&is->pdev->dev, fimc_is_clocks[i]);
87 if (IS_ERR(is->clocks[i])) {
88 ret = PTR_ERR(is->clocks[i]);
89 goto err;
90 }
91 }
92
93 return 0;
94 err:
95 fimc_is_put_clocks(is);
96 dev_err(&is->pdev->dev, "failed to get clock: %s\n",
97 fimc_is_clocks[i]);
98 return ret;
99 }
100
101 static int fimc_is_setup_clocks(struct fimc_is *is)
102 {
103 int ret;
104
105 ret = clk_set_parent(is->clocks[ISS_CLK_ACLK200],
106 is->clocks[ISS_CLK_ACLK200_DIV]);
107 if (ret < 0)
108 return ret;
109
110 ret = clk_set_parent(is->clocks[ISS_CLK_ACLK400MCUISP],
111 is->clocks[ISS_CLK_ACLK400MCUISP_DIV]);
112 if (ret < 0)
113 return ret;
114
115 ret = clk_set_rate(is->clocks[ISS_CLK_ISP_DIV0], ACLK_AXI_FREQUENCY);
116 if (ret < 0)
117 return ret;
118
119 ret = clk_set_rate(is->clocks[ISS_CLK_ISP_DIV1], ACLK_AXI_FREQUENCY);
120 if (ret < 0)
121 return ret;
122
123 ret = clk_set_rate(is->clocks[ISS_CLK_MCUISP_DIV0],
124 ATCLK_MCUISP_FREQUENCY);
125 if (ret < 0)
126 return ret;
127
128 return clk_set_rate(is->clocks[ISS_CLK_MCUISP_DIV1],
129 ATCLK_MCUISP_FREQUENCY);
130 }
131
132 static int fimc_is_enable_clocks(struct fimc_is *is)
133 {
134 int i, ret;
135
136 for (i = 0; i < ISS_GATE_CLKS_MAX; i++) {
137 if (IS_ERR(is->clocks[i]))
138 continue;
139 ret = clk_prepare_enable(is->clocks[i]);
140 if (ret < 0) {
141 dev_err(&is->pdev->dev, "clock %s enable failed\n",
142 fimc_is_clocks[i]);
143 for (--i; i >= 0; i--)
144 clk_disable(is->clocks[i]);
145 return ret;
146 }
147 pr_debug("enabled clock: %s\n", fimc_is_clocks[i]);
148 }
149 return 0;
150 }
151
152 static void fimc_is_disable_clocks(struct fimc_is *is)
153 {
154 int i;
155
156 for (i = 0; i < ISS_GATE_CLKS_MAX; i++) {
157 if (!IS_ERR(is->clocks[i])) {
158 clk_disable_unprepare(is->clocks[i]);
159 pr_debug("disabled clock: %s\n", fimc_is_clocks[i]);
160 }
161 }
162 }
163
164 static int fimc_is_parse_sensor_config(struct fimc_is *is, unsigned int index,
165 struct device_node *node)
166 {
167 struct fimc_is_sensor *sensor = &is->sensor[index];
168 u32 tmp = 0;
169 int ret;
170
171 sensor->drvdata = fimc_is_sensor_get_drvdata(node);
172 if (!sensor->drvdata) {
173 dev_err(&is->pdev->dev, "no driver data found for: %s\n",
174 node->full_name);
175 return -EINVAL;
176 }
177
178 node = of_graph_get_next_endpoint(node, NULL);
179 if (!node)
180 return -ENXIO;
181
182 node = of_graph_get_remote_port(node);
183 if (!node)
184 return -ENXIO;
185
186 /* Use MIPI-CSIS channel id to determine the ISP I2C bus index. */
187 ret = of_property_read_u32(node, "reg", &tmp);
188 if (ret < 0) {
189 dev_err(&is->pdev->dev, "reg property not found at: %s\n",
190 node->full_name);
191 return ret;
192 }
193
194 sensor->i2c_bus = tmp - FIMC_INPUT_MIPI_CSI2_0;
195 return 0;
196 }
197
198 static int fimc_is_register_subdevs(struct fimc_is *is)
199 {
200 struct device_node *i2c_bus, *child;
201 int ret, index = 0;
202
203 ret = fimc_isp_subdev_create(&is->isp);
204 if (ret < 0)
205 return ret;
206
207 /* Initialize memory allocator context for the ISP DMA. */
208 is->isp.alloc_ctx = is->alloc_ctx;
209
210 for_each_compatible_node(i2c_bus, NULL, FIMC_IS_I2C_COMPATIBLE) {
211 for_each_available_child_of_node(i2c_bus, child) {
212 ret = fimc_is_parse_sensor_config(is, index, child);
213
214 if (ret < 0 || index >= FIMC_IS_SENSORS_NUM) {
215 of_node_put(child);
216 return ret;
217 }
218 index++;
219 }
220 }
221 return 0;
222 }
223
224 static int fimc_is_unregister_subdevs(struct fimc_is *is)
225 {
226 fimc_isp_subdev_destroy(&is->isp);
227 return 0;
228 }
229
230 static int fimc_is_load_setfile(struct fimc_is *is, char *file_name)
231 {
232 const struct firmware *fw;
233 void *buf;
234 int ret;
235
236 ret = request_firmware(&fw, file_name, &is->pdev->dev);
237 if (ret < 0) {
238 dev_err(&is->pdev->dev, "firmware request failed (%d)\n", ret);
239 return ret;
240 }
241 buf = is->memory.vaddr + is->setfile.base;
242 memcpy(buf, fw->data, fw->size);
243 fimc_is_mem_barrier();
244 is->setfile.size = fw->size;
245
246 pr_debug("mem vaddr: %p, setfile buf: %p\n", is->memory.vaddr, buf);
247
248 memcpy(is->fw.setfile_info,
249 fw->data + fw->size - FIMC_IS_SETFILE_INFO_LEN,
250 FIMC_IS_SETFILE_INFO_LEN - 1);
251
252 is->fw.setfile_info[FIMC_IS_SETFILE_INFO_LEN - 1] = '\0';
253 is->setfile.state = 1;
254
255 pr_debug("FIMC-IS setfile loaded: base: %#x, size: %zu B\n",
256 is->setfile.base, fw->size);
257
258 release_firmware(fw);
259 return ret;
260 }
261
262 int fimc_is_cpu_set_power(struct fimc_is *is, int on)
263 {
264 unsigned int timeout = FIMC_IS_POWER_ON_TIMEOUT;
265
266 if (on) {
267 /* Disable watchdog */
268 mcuctl_write(0, is, REG_WDT_ISP);
269
270 /* Cortex-A5 start address setting */
271 mcuctl_write(is->memory.paddr, is, MCUCTL_REG_BBOAR);
272
273 /* Enable and start Cortex-A5 */
274 pmuisp_write(0x18000, is, REG_PMU_ISP_ARM_OPTION);
275 pmuisp_write(0x1, is, REG_PMU_ISP_ARM_CONFIGURATION);
276 } else {
277 /* A5 power off */
278 pmuisp_write(0x10000, is, REG_PMU_ISP_ARM_OPTION);
279 pmuisp_write(0x0, is, REG_PMU_ISP_ARM_CONFIGURATION);
280
281 while (pmuisp_read(is, REG_PMU_ISP_ARM_STATUS) & 1) {
282 if (timeout == 0)
283 return -ETIME;
284 timeout--;
285 udelay(1);
286 }
287 }
288
289 return 0;
290 }
291
292 /* Wait until @bit of @is->state is set to @state in the interrupt handler. */
293 int fimc_is_wait_event(struct fimc_is *is, unsigned long bit,
294 unsigned int state, unsigned int timeout)
295 {
296
297 int ret = wait_event_timeout(is->irq_queue,
298 !state ^ test_bit(bit, &is->state),
299 timeout);
300 if (ret == 0) {
301 dev_WARN(&is->pdev->dev, "%s() timed out\n", __func__);
302 return -ETIME;
303 }
304 return 0;
305 }
306
307 int fimc_is_start_firmware(struct fimc_is *is)
308 {
309 struct device *dev = &is->pdev->dev;
310 int ret;
311
312 if (is->fw.f_w == NULL) {
313 dev_err(dev, "firmware is not loaded\n");
314 return -EINVAL;
315 }
316
317 memcpy(is->memory.vaddr, is->fw.f_w->data, is->fw.f_w->size);
318 wmb();
319
320 ret = fimc_is_cpu_set_power(is, 1);
321 if (ret < 0)
322 return ret;
323
324 ret = fimc_is_wait_event(is, IS_ST_A5_PWR_ON, 1,
325 msecs_to_jiffies(FIMC_IS_FW_LOAD_TIMEOUT));
326 if (ret < 0)
327 dev_err(dev, "FIMC-IS CPU power on failed\n");
328
329 return ret;
330 }
331
332 /* Allocate working memory for the FIMC-IS CPU. */
333 static int fimc_is_alloc_cpu_memory(struct fimc_is *is)
334 {
335 struct device *dev = &is->pdev->dev;
336
337 is->memory.vaddr = dma_alloc_coherent(dev, FIMC_IS_CPU_MEM_SIZE,
338 &is->memory.paddr, GFP_KERNEL);
339 if (is->memory.vaddr == NULL)
340 return -ENOMEM;
341
342 is->memory.size = FIMC_IS_CPU_MEM_SIZE;
343 memset(is->memory.vaddr, 0, is->memory.size);
344
345 dev_info(dev, "FIMC-IS CPU memory base: %#x\n", (u32)is->memory.paddr);
346
347 if (((u32)is->memory.paddr) & FIMC_IS_FW_ADDR_MASK) {
348 dev_err(dev, "invalid firmware memory alignment: %#x\n",
349 (u32)is->memory.paddr);
350 dma_free_coherent(dev, is->memory.size, is->memory.vaddr,
351 is->memory.paddr);
352 return -EIO;
353 }
354
355 is->is_p_region = (struct is_region *)(is->memory.vaddr +
356 FIMC_IS_CPU_MEM_SIZE - FIMC_IS_REGION_SIZE);
357
358 is->is_dma_p_region = is->memory.paddr +
359 FIMC_IS_CPU_MEM_SIZE - FIMC_IS_REGION_SIZE;
360
361 is->is_shared_region = (struct is_share_region *)(is->memory.vaddr +
362 FIMC_IS_SHARED_REGION_OFFSET);
363 return 0;
364 }
365
366 static void fimc_is_free_cpu_memory(struct fimc_is *is)
367 {
368 struct device *dev = &is->pdev->dev;
369
370 if (is->memory.vaddr == NULL)
371 return;
372
373 dma_free_coherent(dev, is->memory.size, is->memory.vaddr,
374 is->memory.paddr);
375 }
376
377 static void fimc_is_load_firmware(const struct firmware *fw, void *context)
378 {
379 struct fimc_is *is = context;
380 struct device *dev = &is->pdev->dev;
381 void *buf;
382 int ret;
383
384 if (fw == NULL) {
385 dev_err(dev, "firmware request failed\n");
386 return;
387 }
388 mutex_lock(&is->lock);
389
390 if (fw->size < FIMC_IS_FW_SIZE_MIN || fw->size > FIMC_IS_FW_SIZE_MAX) {
391 dev_err(dev, "wrong firmware size: %zu\n", fw->size);
392 goto done;
393 }
394
395 is->fw.size = fw->size;
396
397 ret = fimc_is_alloc_cpu_memory(is);
398 if (ret < 0) {
399 dev_err(dev, "failed to allocate FIMC-IS CPU memory\n");
400 goto done;
401 }
402
403 memcpy(is->memory.vaddr, fw->data, fw->size);
404 wmb();
405
406 /* Read firmware description. */
407 buf = (void *)(is->memory.vaddr + fw->size - FIMC_IS_FW_DESC_LEN);
408 memcpy(&is->fw.info, buf, FIMC_IS_FW_INFO_LEN);
409 is->fw.info[FIMC_IS_FW_INFO_LEN] = 0;
410
411 buf = (void *)(is->memory.vaddr + fw->size - FIMC_IS_FW_VER_LEN);
412 memcpy(&is->fw.version, buf, FIMC_IS_FW_VER_LEN);
413 is->fw.version[FIMC_IS_FW_VER_LEN - 1] = 0;
414
415 is->fw.state = 1;
416
417 dev_info(dev, "loaded firmware: %s, rev. %s\n",
418 is->fw.info, is->fw.version);
419 dev_dbg(dev, "FW size: %zu, paddr: %pad\n", fw->size, &is->memory.paddr);
420
421 is->is_shared_region->chip_id = 0xe4412;
422 is->is_shared_region->chip_rev_no = 1;
423
424 fimc_is_mem_barrier();
425
426 /*
427 * FIXME: The firmware is not being released for now, as it is
428 * needed around for copying to the IS working memory every
429 * time before the Cortex-A5 is restarted.
430 */
431 release_firmware(is->fw.f_w);
432 is->fw.f_w = fw;
433 done:
434 mutex_unlock(&is->lock);
435 }
436
437 static int fimc_is_request_firmware(struct fimc_is *is, const char *fw_name)
438 {
439 return request_firmware_nowait(THIS_MODULE,
440 FW_ACTION_HOTPLUG, fw_name, &is->pdev->dev,
441 GFP_KERNEL, is, fimc_is_load_firmware);
442 }
443
444 /* General IS interrupt handler */
445 static void fimc_is_general_irq_handler(struct fimc_is *is)
446 {
447 is->i2h_cmd.cmd = mcuctl_read(is, MCUCTL_REG_ISSR(10));
448
449 switch (is->i2h_cmd.cmd) {
450 case IHC_GET_SENSOR_NUM:
451 fimc_is_hw_get_params(is, 1);
452 fimc_is_hw_wait_intmsr0_intmsd0(is);
453 fimc_is_hw_set_sensor_num(is);
454 pr_debug("ISP FW version: %#x\n", is->i2h_cmd.args[0]);
455 break;
456 case IHC_SET_FACE_MARK:
457 case IHC_FRAME_DONE:
458 fimc_is_hw_get_params(is, 2);
459 break;
460 case IHC_SET_SHOT_MARK:
461 case IHC_AA_DONE:
462 case IH_REPLY_DONE:
463 fimc_is_hw_get_params(is, 3);
464 break;
465 case IH_REPLY_NOT_DONE:
466 fimc_is_hw_get_params(is, 4);
467 break;
468 case IHC_NOT_READY:
469 break;
470 default:
471 pr_info("unknown command: %#x\n", is->i2h_cmd.cmd);
472 }
473
474 fimc_is_fw_clear_irq1(is, FIMC_IS_INT_GENERAL);
475
476 switch (is->i2h_cmd.cmd) {
477 case IHC_GET_SENSOR_NUM:
478 fimc_is_hw_set_intgr0_gd0(is);
479 set_bit(IS_ST_A5_PWR_ON, &is->state);
480 break;
481
482 case IHC_SET_SHOT_MARK:
483 break;
484
485 case IHC_SET_FACE_MARK:
486 is->fd_header.count = is->i2h_cmd.args[0];
487 is->fd_header.index = is->i2h_cmd.args[1];
488 is->fd_header.offset = 0;
489 break;
490
491 case IHC_FRAME_DONE:
492 break;
493
494 case IHC_AA_DONE:
495 pr_debug("AA_DONE - %d, %d, %d\n", is->i2h_cmd.args[0],
496 is->i2h_cmd.args[1], is->i2h_cmd.args[2]);
497 break;
498
499 case IH_REPLY_DONE:
500 pr_debug("ISR_DONE: args[0]: %#x\n", is->i2h_cmd.args[0]);
501
502 switch (is->i2h_cmd.args[0]) {
503 case HIC_PREVIEW_STILL...HIC_CAPTURE_VIDEO:
504 /* Get CAC margin */
505 set_bit(IS_ST_CHANGE_MODE, &is->state);
506 is->isp.cac_margin_x = is->i2h_cmd.args[1];
507 is->isp.cac_margin_y = is->i2h_cmd.args[2];
508 pr_debug("CAC margin (x,y): (%d,%d)\n",
509 is->isp.cac_margin_x, is->isp.cac_margin_y);
510 break;
511
512 case HIC_STREAM_ON:
513 clear_bit(IS_ST_STREAM_OFF, &is->state);
514 set_bit(IS_ST_STREAM_ON, &is->state);
515 break;
516
517 case HIC_STREAM_OFF:
518 clear_bit(IS_ST_STREAM_ON, &is->state);
519 set_bit(IS_ST_STREAM_OFF, &is->state);
520 break;
521
522 case HIC_SET_PARAMETER:
523 is->config[is->config_index].p_region_index[0] = 0;
524 is->config[is->config_index].p_region_index[1] = 0;
525 set_bit(IS_ST_BLOCK_CMD_CLEARED, &is->state);
526 pr_debug("HIC_SET_PARAMETER\n");
527 break;
528
529 case HIC_GET_PARAMETER:
530 break;
531
532 case HIC_SET_TUNE:
533 break;
534
535 case HIC_GET_STATUS:
536 break;
537
538 case HIC_OPEN_SENSOR:
539 set_bit(IS_ST_OPEN_SENSOR, &is->state);
540 pr_debug("data lanes: %d, settle line: %d\n",
541 is->i2h_cmd.args[2], is->i2h_cmd.args[1]);
542 break;
543
544 case HIC_CLOSE_SENSOR:
545 clear_bit(IS_ST_OPEN_SENSOR, &is->state);
546 is->sensor_index = 0;
547 break;
548
549 case HIC_MSG_TEST:
550 pr_debug("config MSG level completed\n");
551 break;
552
553 case HIC_POWER_DOWN:
554 clear_bit(IS_ST_PWR_SUBIP_ON, &is->state);
555 break;
556
557 case HIC_GET_SET_FILE_ADDR:
558 is->setfile.base = is->i2h_cmd.args[1];
559 set_bit(IS_ST_SETFILE_LOADED, &is->state);
560 break;
561
562 case HIC_LOAD_SET_FILE:
563 set_bit(IS_ST_SETFILE_LOADED, &is->state);
564 break;
565 }
566 break;
567
568 case IH_REPLY_NOT_DONE:
569 pr_err("ISR_NDONE: %d: %#x, %s\n", is->i2h_cmd.args[0],
570 is->i2h_cmd.args[1],
571 fimc_is_strerr(is->i2h_cmd.args[1]));
572
573 if (is->i2h_cmd.args[1] & IS_ERROR_TIME_OUT_FLAG)
574 pr_err("IS_ERROR_TIME_OUT\n");
575
576 switch (is->i2h_cmd.args[1]) {
577 case IS_ERROR_SET_PARAMETER:
578 fimc_is_mem_barrier();
579 }
580
581 switch (is->i2h_cmd.args[0]) {
582 case HIC_SET_PARAMETER:
583 is->config[is->config_index].p_region_index[0] = 0;
584 is->config[is->config_index].p_region_index[1] = 0;
585 set_bit(IS_ST_BLOCK_CMD_CLEARED, &is->state);
586 break;
587 }
588 break;
589
590 case IHC_NOT_READY:
591 pr_err("IS control sequence error: Not Ready\n");
592 break;
593 }
594
595 wake_up(&is->irq_queue);
596 }
597
598 static irqreturn_t fimc_is_irq_handler(int irq, void *priv)
599 {
600 struct fimc_is *is = priv;
601 unsigned long flags;
602 u32 status;
603
604 spin_lock_irqsave(&is->slock, flags);
605 status = mcuctl_read(is, MCUCTL_REG_INTSR1);
606
607 if (status & (1UL << FIMC_IS_INT_GENERAL))
608 fimc_is_general_irq_handler(is);
609
610 if (status & (1UL << FIMC_IS_INT_FRAME_DONE_ISP))
611 fimc_isp_irq_handler(is);
612
613 spin_unlock_irqrestore(&is->slock, flags);
614 return IRQ_HANDLED;
615 }
616
617 static int fimc_is_hw_open_sensor(struct fimc_is *is,
618 struct fimc_is_sensor *sensor)
619 {
620 struct sensor_open_extended *soe = (void *)&is->is_p_region->shared;
621
622 fimc_is_hw_wait_intmsr0_intmsd0(is);
623
624 soe->self_calibration_mode = 1;
625 soe->actuator_type = 0;
626 soe->mipi_lane_num = 0;
627 soe->mclk = 0;
628 soe->mipi_speed = 0;
629 soe->fast_open_sensor = 0;
630 soe->i2c_sclk = 88000000;
631
632 fimc_is_mem_barrier();
633
634 /*
635 * Some user space use cases hang up here without this
636 * empirically chosen delay.
637 */
638 udelay(100);
639
640 mcuctl_write(HIC_OPEN_SENSOR, is, MCUCTL_REG_ISSR(0));
641 mcuctl_write(is->sensor_index, is, MCUCTL_REG_ISSR(1));
642 mcuctl_write(sensor->drvdata->id, is, MCUCTL_REG_ISSR(2));
643 mcuctl_write(sensor->i2c_bus, is, MCUCTL_REG_ISSR(3));
644 mcuctl_write(is->is_dma_p_region, is, MCUCTL_REG_ISSR(4));
645
646 fimc_is_hw_set_intgr0_gd0(is);
647
648 return fimc_is_wait_event(is, IS_ST_OPEN_SENSOR, 1,
649 sensor->drvdata->open_timeout);
650 }
651
652
653 int fimc_is_hw_initialize(struct fimc_is *is)
654 {
655 const int config_ids[] = {
656 IS_SC_PREVIEW_STILL, IS_SC_PREVIEW_VIDEO,
657 IS_SC_CAPTURE_STILL, IS_SC_CAPTURE_VIDEO
658 };
659 struct device *dev = &is->pdev->dev;
660 u32 prev_id;
661 int i, ret;
662
663 /* Sensor initialization. Only one sensor is currently supported. */
664 ret = fimc_is_hw_open_sensor(is, &is->sensor[0]);
665 if (ret < 0)
666 return ret;
667
668 /* Get the setfile address. */
669 fimc_is_hw_get_setfile_addr(is);
670
671 ret = fimc_is_wait_event(is, IS_ST_SETFILE_LOADED, 1,
672 FIMC_IS_CONFIG_TIMEOUT);
673 if (ret < 0) {
674 dev_err(dev, "get setfile address timed out\n");
675 return ret;
676 }
677 pr_debug("setfile.base: %#x\n", is->setfile.base);
678
679 /* Load the setfile. */
680 fimc_is_load_setfile(is, FIMC_IS_SETFILE_6A3);
681 clear_bit(IS_ST_SETFILE_LOADED, &is->state);
682 fimc_is_hw_load_setfile(is);
683 ret = fimc_is_wait_event(is, IS_ST_SETFILE_LOADED, 1,
684 FIMC_IS_CONFIG_TIMEOUT);
685 if (ret < 0) {
686 dev_err(dev, "loading setfile timed out\n");
687 return ret;
688 }
689
690 pr_debug("setfile: base: %#x, size: %d\n",
691 is->setfile.base, is->setfile.size);
692 pr_info("FIMC-IS Setfile info: %s\n", is->fw.setfile_info);
693
694 /* Check magic number. */
695 if (is->is_p_region->shared[MAX_SHARED_COUNT - 1] !=
696 FIMC_IS_MAGIC_NUMBER) {
697 dev_err(dev, "magic number error!\n");
698 return -EIO;
699 }
700
701 pr_debug("shared region: %pad, parameter region: %pad\n",
702 &is->memory.paddr + FIMC_IS_SHARED_REGION_OFFSET,
703 &is->is_dma_p_region);
704
705 is->setfile.sub_index = 0;
706
707 /* Stream off. */
708 fimc_is_hw_stream_off(is);
709 ret = fimc_is_wait_event(is, IS_ST_STREAM_OFF, 1,
710 FIMC_IS_CONFIG_TIMEOUT);
711 if (ret < 0) {
712 dev_err(dev, "stream off timeout\n");
713 return ret;
714 }
715
716 /* Preserve previous mode. */
717 prev_id = is->config_index;
718
719 /* Set initial parameter values. */
720 for (i = 0; i < ARRAY_SIZE(config_ids); i++) {
721 is->config_index = config_ids[i];
722 fimc_is_set_initial_params(is);
723 ret = fimc_is_itf_s_param(is, true);
724 if (ret < 0) {
725 is->config_index = prev_id;
726 return ret;
727 }
728 }
729 is->config_index = prev_id;
730
731 set_bit(IS_ST_INIT_DONE, &is->state);
732 dev_info(dev, "initialization sequence completed (%d)\n",
733 is->config_index);
734 return 0;
735 }
736
737 static int fimc_is_log_show(struct seq_file *s, void *data)
738 {
739 struct fimc_is *is = s->private;
740 const u8 *buf = is->memory.vaddr + FIMC_IS_DEBUG_REGION_OFFSET;
741
742 if (is->memory.vaddr == NULL) {
743 dev_err(&is->pdev->dev, "firmware memory is not initialized\n");
744 return -EIO;
745 }
746
747 seq_printf(s, "%s\n", buf);
748 return 0;
749 }
750
751 static int fimc_is_debugfs_open(struct inode *inode, struct file *file)
752 {
753 return single_open(file, fimc_is_log_show, inode->i_private);
754 }
755
756 static const struct file_operations fimc_is_debugfs_fops = {
757 .open = fimc_is_debugfs_open,
758 .read = seq_read,
759 .llseek = seq_lseek,
760 .release = single_release,
761 };
762
763 static void fimc_is_debugfs_remove(struct fimc_is *is)
764 {
765 debugfs_remove_recursive(is->debugfs_entry);
766 is->debugfs_entry = NULL;
767 }
768
769 static int fimc_is_debugfs_create(struct fimc_is *is)
770 {
771 struct dentry *dentry;
772
773 is->debugfs_entry = debugfs_create_dir("fimc_is", NULL);
774
775 dentry = debugfs_create_file("fw_log", S_IRUGO, is->debugfs_entry,
776 is, &fimc_is_debugfs_fops);
777 if (!dentry)
778 fimc_is_debugfs_remove(is);
779
780 return is->debugfs_entry == NULL ? -EIO : 0;
781 }
782
783 static int fimc_is_runtime_resume(struct device *dev);
784 static int fimc_is_runtime_suspend(struct device *dev);
785
786 static int fimc_is_probe(struct platform_device *pdev)
787 {
788 struct device *dev = &pdev->dev;
789 struct fimc_is *is;
790 struct resource res;
791 struct device_node *node;
792 int ret;
793
794 is = devm_kzalloc(&pdev->dev, sizeof(*is), GFP_KERNEL);
795 if (!is)
796 return -ENOMEM;
797
798 is->pdev = pdev;
799 is->isp.pdev = pdev;
800
801 init_waitqueue_head(&is->irq_queue);
802 spin_lock_init(&is->slock);
803 mutex_init(&is->lock);
804
805 ret = of_address_to_resource(dev->of_node, 0, &res);
806 if (ret < 0)
807 return ret;
808
809 is->regs = devm_ioremap_resource(dev, &res);
810 if (IS_ERR(is->regs))
811 return PTR_ERR(is->regs);
812
813 node = of_get_child_by_name(dev->of_node, "pmu");
814 if (!node)
815 return -ENODEV;
816
817 is->pmu_regs = of_iomap(node, 0);
818 if (!is->pmu_regs)
819 return -ENOMEM;
820
821 is->irq = irq_of_parse_and_map(dev->of_node, 0);
822 if (!is->irq) {
823 dev_err(dev, "no irq found\n");
824 return -EINVAL;
825 }
826
827 ret = fimc_is_get_clocks(is);
828 if (ret < 0)
829 return ret;
830
831 platform_set_drvdata(pdev, is);
832
833 ret = request_irq(is->irq, fimc_is_irq_handler, 0, dev_name(dev), is);
834 if (ret < 0) {
835 dev_err(dev, "irq request failed\n");
836 goto err_clk;
837 }
838 pm_runtime_enable(dev);
839
840 if (!pm_runtime_enabled(dev)) {
841 ret = fimc_is_runtime_resume(dev);
842 if (ret < 0)
843 goto err_irq;
844 }
845
846 ret = pm_runtime_get_sync(dev);
847 if (ret < 0)
848 goto err_pm;
849
850 is->alloc_ctx = vb2_dma_contig_init_ctx(dev);
851 if (IS_ERR(is->alloc_ctx)) {
852 ret = PTR_ERR(is->alloc_ctx);
853 goto err_pm;
854 }
855 /*
856 * Register FIMC-IS V4L2 subdevs to this driver. The video nodes
857 * will be created within the subdev's registered() callback.
858 */
859 ret = fimc_is_register_subdevs(is);
860 if (ret < 0)
861 goto err_vb;
862
863 ret = fimc_is_debugfs_create(is);
864 if (ret < 0)
865 goto err_sd;
866
867 ret = fimc_is_request_firmware(is, FIMC_IS_FW_FILENAME);
868 if (ret < 0)
869 goto err_dfs;
870
871 pm_runtime_put_sync(dev);
872
873 dev_dbg(dev, "FIMC-IS registered successfully\n");
874 return 0;
875
876 err_dfs:
877 fimc_is_debugfs_remove(is);
878 err_sd:
879 fimc_is_unregister_subdevs(is);
880 err_vb:
881 vb2_dma_contig_cleanup_ctx(is->alloc_ctx);
882 err_pm:
883 if (!pm_runtime_enabled(dev))
884 fimc_is_runtime_suspend(dev);
885 err_irq:
886 free_irq(is->irq, is);
887 err_clk:
888 fimc_is_put_clocks(is);
889 return ret;
890 }
891
892 static int fimc_is_runtime_resume(struct device *dev)
893 {
894 struct fimc_is *is = dev_get_drvdata(dev);
895 int ret;
896
897 ret = fimc_is_setup_clocks(is);
898 if (ret)
899 return ret;
900
901 return fimc_is_enable_clocks(is);
902 }
903
904 static int fimc_is_runtime_suspend(struct device *dev)
905 {
906 struct fimc_is *is = dev_get_drvdata(dev);
907
908 fimc_is_disable_clocks(is);
909 return 0;
910 }
911
912 #ifdef CONFIG_PM_SLEEP
913 static int fimc_is_resume(struct device *dev)
914 {
915 /* TODO: */
916 return 0;
917 }
918
919 static int fimc_is_suspend(struct device *dev)
920 {
921 struct fimc_is *is = dev_get_drvdata(dev);
922
923 /* TODO: */
924 if (test_bit(IS_ST_A5_PWR_ON, &is->state))
925 return -EBUSY;
926
927 return 0;
928 }
929 #endif /* CONFIG_PM_SLEEP */
930
931 static int fimc_is_remove(struct platform_device *pdev)
932 {
933 struct device *dev = &pdev->dev;
934 struct fimc_is *is = dev_get_drvdata(dev);
935
936 pm_runtime_disable(dev);
937 pm_runtime_set_suspended(dev);
938 if (!pm_runtime_status_suspended(dev))
939 fimc_is_runtime_suspend(dev);
940 free_irq(is->irq, is);
941 fimc_is_unregister_subdevs(is);
942 vb2_dma_contig_cleanup_ctx(is->alloc_ctx);
943 fimc_is_put_clocks(is);
944 fimc_is_debugfs_remove(is);
945 release_firmware(is->fw.f_w);
946 fimc_is_free_cpu_memory(is);
947
948 return 0;
949 }
950
951 static const struct of_device_id fimc_is_of_match[] = {
952 { .compatible = "samsung,exynos4212-fimc-is" },
953 { /* sentinel */ },
954 };
955 MODULE_DEVICE_TABLE(of, fimc_is_of_match);
956
957 static const struct dev_pm_ops fimc_is_pm_ops = {
958 SET_SYSTEM_SLEEP_PM_OPS(fimc_is_suspend, fimc_is_resume)
959 SET_RUNTIME_PM_OPS(fimc_is_runtime_suspend, fimc_is_runtime_resume,
960 NULL)
961 };
962
963 static struct platform_driver fimc_is_driver = {
964 .probe = fimc_is_probe,
965 .remove = fimc_is_remove,
966 .driver = {
967 .of_match_table = fimc_is_of_match,
968 .name = FIMC_IS_DRV_NAME,
969 .pm = &fimc_is_pm_ops,
970 }
971 };
972
973 static int fimc_is_module_init(void)
974 {
975 int ret;
976
977 ret = fimc_is_register_i2c_driver();
978 if (ret < 0)
979 return ret;
980
981 ret = platform_driver_register(&fimc_is_driver);
982
983 if (ret < 0)
984 fimc_is_unregister_i2c_driver();
985
986 return ret;
987 }
988
989 static void fimc_is_module_exit(void)
990 {
991 fimc_is_unregister_i2c_driver();
992 platform_driver_unregister(&fimc_is_driver);
993 }
994
995 module_init(fimc_is_module_init);
996 module_exit(fimc_is_module_exit);
997
998 MODULE_ALIAS("platform:" FIMC_IS_DRV_NAME);
999 MODULE_AUTHOR("Younghwan Joo <yhwan.joo@samsung.com>");
1000 MODULE_AUTHOR("Sylwester Nawrocki <s.nawrocki@samsung.com>");
1001 MODULE_LICENSE("GPL v2");
Linux kernel - Deliverables
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