1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Samsung EXYNOS4x12 FIMC-IS (Imaging Subsystem) driver
4 *
5 * Copyright (C) 2013 Samsung Electronics Co., Ltd.
6 *
7 * Authors: Sylwester Nawrocki <s.nawrocki@samsung.com>
8 * Younghwan Joo <yhwan.joo@samsung.com>
9 */
10 #define pr_fmt(fmt) "%s:%d " fmt, __func__, __LINE__
11
12 #include <linux/device.h>
13 #include <linux/debugfs.h>
14 #include <linux/delay.h>
15 #include <linux/errno.h>
16 #include <linux/firmware.h>
17 #include <linux/interrupt.h>
18 #include <linux/kernel.h>
19 #include <linux/module.h>
20 #include <linux/i2c.h>
21 #include <linux/of_irq.h>
22 #include <linux/of_address.h>
23 #include <linux/of_graph.h>
24 #include <linux/of_platform.h>
25 #include <linux/platform_device.h>
26 #include <linux/pm_runtime.h>
27 #include <linux/slab.h>
28 #include <linux/types.h>
29 #include <linux/videodev2.h>
30 #include <media/videobuf2-dma-contig.h>
31
32 #include "media-dev.h"
33 #include "fimc-is.h"
34 #include "fimc-is-command.h"
35 #include "fimc-is-errno.h"
36 #include "fimc-is-i2c.h"
37 #include "fimc-is-param.h"
38 #include "fimc-is-regs.h"
39
40
41 static char *fimc_is_clocks[ISS_CLKS_MAX] = {
42 [ISS_CLK_PPMUISPX] = "ppmuispx",
43 [ISS_CLK_PPMUISPMX] = "ppmuispmx",
44 [ISS_CLK_LITE0] = "lite0",
45 [ISS_CLK_LITE1] = "lite1",
46 [ISS_CLK_MPLL] = "mpll",
47 [ISS_CLK_ISP] = "isp",
48 [ISS_CLK_DRC] = "drc",
49 [ISS_CLK_FD] = "fd",
50 [ISS_CLK_MCUISP] = "mcuisp",
51 [ISS_CLK_GICISP] = "gicisp",
52 [ISS_CLK_PWM_ISP] = "pwm_isp",
53 [ISS_CLK_MCUCTL_ISP] = "mcuctl_isp",
54 [ISS_CLK_UART] = "uart",
55 [ISS_CLK_ISP_DIV0] = "ispdiv0",
56 [ISS_CLK_ISP_DIV1] = "ispdiv1",
57 [ISS_CLK_MCUISP_DIV0] = "mcuispdiv0",
58 [ISS_CLK_MCUISP_DIV1] = "mcuispdiv1",
59 [ISS_CLK_ACLK200] = "aclk200",
60 [ISS_CLK_ACLK200_DIV] = "div_aclk200",
61 [ISS_CLK_ACLK400MCUISP] = "aclk400mcuisp",
62 [ISS_CLK_ACLK400MCUISP_DIV] = "div_aclk400mcuisp",
63 };
64
fimc_is_put_clocks(struct fimc_is * is)65 static void fimc_is_put_clocks(struct fimc_is *is)
66 {
67 int i;
68
69 for (i = 0; i < ISS_CLKS_MAX; i++) {
70 if (IS_ERR(is->clocks[i]))
71 continue;
72 clk_put(is->clocks[i]);
73 is->clocks[i] = ERR_PTR(-EINVAL);
74 }
75 }
76
fimc_is_get_clocks(struct fimc_is * is)77 static int fimc_is_get_clocks(struct fimc_is *is)
78 {
79 int i, ret;
80
81 for (i = 0; i < ISS_CLKS_MAX; i++)
82 is->clocks[i] = ERR_PTR(-EINVAL);
83
84 for (i = 0; i < ISS_CLKS_MAX; i++) {
85 is->clocks[i] = clk_get(&is->pdev->dev, fimc_is_clocks[i]);
86 if (IS_ERR(is->clocks[i])) {
87 ret = PTR_ERR(is->clocks[i]);
88 goto err;
89 }
90 }
91
92 return 0;
93 err:
94 fimc_is_put_clocks(is);
95 dev_err(&is->pdev->dev, "failed to get clock: %s\n",
96 fimc_is_clocks[i]);
97 return ret;
98 }
99
fimc_is_setup_clocks(struct fimc_is * is)100 static int fimc_is_setup_clocks(struct fimc_is *is)
101 {
102 int ret;
103
104 ret = clk_set_parent(is->clocks[ISS_CLK_ACLK200],
105 is->clocks[ISS_CLK_ACLK200_DIV]);
106 if (ret < 0)
107 return ret;
108
109 ret = clk_set_parent(is->clocks[ISS_CLK_ACLK400MCUISP],
110 is->clocks[ISS_CLK_ACLK400MCUISP_DIV]);
111 if (ret < 0)
112 return ret;
113
114 ret = clk_set_rate(is->clocks[ISS_CLK_ISP_DIV0], ACLK_AXI_FREQUENCY);
115 if (ret < 0)
116 return ret;
117
118 ret = clk_set_rate(is->clocks[ISS_CLK_ISP_DIV1], ACLK_AXI_FREQUENCY);
119 if (ret < 0)
120 return ret;
121
122 ret = clk_set_rate(is->clocks[ISS_CLK_MCUISP_DIV0],
123 ATCLK_MCUISP_FREQUENCY);
124 if (ret < 0)
125 return ret;
126
127 return clk_set_rate(is->clocks[ISS_CLK_MCUISP_DIV1],
128 ATCLK_MCUISP_FREQUENCY);
129 }
130
fimc_is_enable_clocks(struct fimc_is * is)131 static int fimc_is_enable_clocks(struct fimc_is *is)
132 {
133 int i, ret;
134
135 for (i = 0; i < ISS_GATE_CLKS_MAX; i++) {
136 if (IS_ERR(is->clocks[i]))
137 continue;
138 ret = clk_prepare_enable(is->clocks[i]);
139 if (ret < 0) {
140 dev_err(&is->pdev->dev, "clock %s enable failed\n",
141 fimc_is_clocks[i]);
142 for (--i; i >= 0; i--)
143 clk_disable_unprepare(is->clocks[i]);
144 return ret;
145 }
146 pr_debug("enabled clock: %s\n", fimc_is_clocks[i]);
147 }
148 return 0;
149 }
150
fimc_is_disable_clocks(struct fimc_is * is)151 static void fimc_is_disable_clocks(struct fimc_is *is)
152 {
153 int i;
154
155 for (i = 0; i < ISS_GATE_CLKS_MAX; i++) {
156 if (!IS_ERR(is->clocks[i])) {
157 clk_disable_unprepare(is->clocks[i]);
158 pr_debug("disabled clock: %s\n", fimc_is_clocks[i]);
159 }
160 }
161 }
162
fimc_is_parse_sensor_config(struct fimc_is * is,unsigned int index,struct device_node * node)163 static int fimc_is_parse_sensor_config(struct fimc_is *is, unsigned int index,
164 struct device_node *node)
165 {
166 struct fimc_is_sensor *sensor = &is->sensor[index];
167 struct device_node *ep, *port;
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: %pOF\n",
174 node);
175 return -EINVAL;
176 }
177
178 ep = of_graph_get_endpoint_by_regs(node, 0, -1);
179 if (!ep)
180 return -ENXIO;
181
182 port = of_graph_get_remote_port(ep);
183 of_node_put(ep);
184 if (!port)
185 return -ENXIO;
186
187 /* Use MIPI-CSIS channel id to determine the ISP I2C bus index. */
188 ret = of_property_read_u32(port, "reg", &tmp);
189 if (ret < 0) {
190 dev_err(&is->pdev->dev, "reg property not found at: %pOF\n",
191 port);
192 of_node_put(port);
193 return ret;
194 }
195
196 of_node_put(port);
197 sensor->i2c_bus = tmp - FIMC_INPUT_MIPI_CSI2_0;
198 return 0;
199 }
200
fimc_is_register_subdevs(struct fimc_is * is)201 static int fimc_is_register_subdevs(struct fimc_is *is)
202 {
203 struct device_node *i2c_bus, *child;
204 int ret, index = 0;
205
206 ret = fimc_isp_subdev_create(&is->isp);
207 if (ret < 0)
208 return ret;
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 of_node_put(i2c_bus);
217 return ret;
218 }
219 index++;
220 }
221 }
222 return 0;
223 }
224
fimc_is_unregister_subdevs(struct fimc_is * is)225 static int fimc_is_unregister_subdevs(struct fimc_is *is)
226 {
227 fimc_isp_subdev_destroy(&is->isp);
228 return 0;
229 }
230
fimc_is_load_setfile(struct fimc_is * is,char * file_name)231 static int fimc_is_load_setfile(struct fimc_is *is, char *file_name)
232 {
233 const struct firmware *fw;
234 void *buf;
235 int ret;
236
237 ret = request_firmware(&fw, file_name, &is->pdev->dev);
238 if (ret < 0) {
239 dev_err(&is->pdev->dev, "firmware request failed (%d)\n", ret);
240 return ret;
241 }
242 buf = is->memory.vaddr + is->setfile.base;
243 memcpy(buf, fw->data, fw->size);
244 fimc_is_mem_barrier();
245 is->setfile.size = fw->size;
246
247 pr_debug("mem vaddr: %p, setfile buf: %p\n", is->memory.vaddr, buf);
248
249 memcpy(is->fw.setfile_info,
250 fw->data + fw->size - FIMC_IS_SETFILE_INFO_LEN,
251 FIMC_IS_SETFILE_INFO_LEN - 1);
252
253 is->fw.setfile_info[FIMC_IS_SETFILE_INFO_LEN - 1] = '\0';
254 is->setfile.state = 1;
255
256 pr_debug("FIMC-IS setfile loaded: base: %#x, size: %zu B\n",
257 is->setfile.base, fw->size);
258
259 release_firmware(fw);
260 return ret;
261 }
262
fimc_is_cpu_set_power(struct fimc_is * is,int on)263 int fimc_is_cpu_set_power(struct fimc_is *is, int on)
264 {
265 unsigned int timeout = FIMC_IS_POWER_ON_TIMEOUT;
266
267 if (on) {
268 /* Disable watchdog */
269 mcuctl_write(0, is, REG_WDT_ISP);
270
271 /* Cortex-A5 start address setting */
272 mcuctl_write(is->memory.addr, is, MCUCTL_REG_BBOAR);
273
274 /* Enable and start Cortex-A5 */
275 pmuisp_write(0x18000, is, REG_PMU_ISP_ARM_OPTION);
276 pmuisp_write(0x1, is, REG_PMU_ISP_ARM_CONFIGURATION);
277 } else {
278 /* A5 power off */
279 pmuisp_write(0x10000, is, REG_PMU_ISP_ARM_OPTION);
280 pmuisp_write(0x0, is, REG_PMU_ISP_ARM_CONFIGURATION);
281
282 while (pmuisp_read(is, REG_PMU_ISP_ARM_STATUS) & 1) {
283 if (timeout == 0)
284 return -ETIME;
285 timeout--;
286 udelay(1);
287 }
288 }
289
290 return 0;
291 }
292
293 /* Wait until @bit of @is->state is set to @state in the interrupt handler. */
fimc_is_wait_event(struct fimc_is * is,unsigned long bit,unsigned int state,unsigned int timeout)294 int fimc_is_wait_event(struct fimc_is *is, unsigned long bit,
295 unsigned int state, unsigned int timeout)
296 {
297
298 int ret = wait_event_timeout(is->irq_queue,
299 !state ^ test_bit(bit, &is->state),
300 timeout);
301 if (ret == 0) {
302 dev_WARN(&is->pdev->dev, "%s() timed out\n", __func__);
303 return -ETIME;
304 }
305 return 0;
306 }
307
fimc_is_start_firmware(struct fimc_is * is)308 int fimc_is_start_firmware(struct fimc_is *is)
309 {
310 struct device *dev = &is->pdev->dev;
311 int ret;
312
313 if (is->fw.f_w == NULL) {
314 dev_err(dev, "firmware is not loaded\n");
315 return -EINVAL;
316 }
317
318 memcpy(is->memory.vaddr, is->fw.f_w->data, is->fw.f_w->size);
319 wmb();
320
321 ret = fimc_is_cpu_set_power(is, 1);
322 if (ret < 0)
323 return ret;
324
325 ret = fimc_is_wait_event(is, IS_ST_A5_PWR_ON, 1,
326 msecs_to_jiffies(FIMC_IS_FW_LOAD_TIMEOUT));
327 if (ret < 0)
328 dev_err(dev, "FIMC-IS CPU power on failed\n");
329
330 return ret;
331 }
332
333 /* Allocate working memory for the FIMC-IS CPU. */
fimc_is_alloc_cpu_memory(struct fimc_is * is)334 static int fimc_is_alloc_cpu_memory(struct fimc_is *is)
335 {
336 struct device *dev = &is->pdev->dev;
337
338 is->memory.vaddr = dma_alloc_coherent(dev, FIMC_IS_CPU_MEM_SIZE,
339 &is->memory.addr, GFP_KERNEL);
340 if (is->memory.vaddr == NULL)
341 return -ENOMEM;
342
343 is->memory.size = FIMC_IS_CPU_MEM_SIZE;
344
345 dev_info(dev, "FIMC-IS CPU memory base: %pad\n", &is->memory.addr);
346
347 if (((u32)is->memory.addr) & FIMC_IS_FW_ADDR_MASK) {
348 dev_err(dev, "invalid firmware memory alignment: %#x\n",
349 (u32)is->memory.addr);
350 dma_free_coherent(dev, is->memory.size, is->memory.vaddr,
351 is->memory.addr);
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.addr +
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
fimc_is_free_cpu_memory(struct fimc_is * is)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.addr);
375 }
376
fimc_is_load_firmware(const struct firmware * fw,void * context)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, DMA addr: %pad\n", fw->size, &is->memory.addr);
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
fimc_is_request_firmware(struct fimc_is * is,const char * fw_name)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_UEVENT, fw_name, &is->pdev->dev,
441 GFP_KERNEL, is, fimc_is_load_firmware);
442 }
443
444 /* General IS interrupt handler */
fimc_is_general_irq_handler(struct fimc_is * is)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
fimc_is_irq_handler(int irq,void * priv)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
fimc_is_hw_open_sensor(struct fimc_is * is,struct fimc_is_sensor * sensor)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
fimc_is_hw_initialize(struct fimc_is * is)653 int fimc_is_hw_initialize(struct fimc_is *is)
654 {
655 static 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.addr + 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
fimc_is_show(struct seq_file * s,void * data)737 static int fimc_is_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 DEFINE_SHOW_ATTRIBUTE(fimc_is);
752
fimc_is_debugfs_remove(struct fimc_is * is)753 static void fimc_is_debugfs_remove(struct fimc_is *is)
754 {
755 debugfs_remove_recursive(is->debugfs_entry);
756 is->debugfs_entry = NULL;
757 }
758
fimc_is_debugfs_create(struct fimc_is * is)759 static void fimc_is_debugfs_create(struct fimc_is *is)
760 {
761 is->debugfs_entry = debugfs_create_dir("fimc_is", NULL);
762
763 debugfs_create_file("fw_log", S_IRUGO, is->debugfs_entry, is,
764 &fimc_is_fops);
765 }
766
767 static int fimc_is_runtime_resume(struct device *dev);
768 static int fimc_is_runtime_suspend(struct device *dev);
769
fimc_is_get_pmu_regs(struct device * dev)770 static void __iomem *fimc_is_get_pmu_regs(struct device *dev)
771 {
772 struct device_node *node;
773 void __iomem *regs;
774
775 node = of_parse_phandle(dev->of_node, "samsung,pmu-syscon", 0);
776 if (!node) {
777 node = of_get_child_by_name(dev->of_node, "pmu");
778 if (!node)
779 return IOMEM_ERR_PTR(-ENODEV);
780 dev_warn(dev, "Found PMU node via deprecated method, update your DTB\n");
781 }
782
783 regs = of_iomap(node, 0);
784 of_node_put(node);
785 if (!regs)
786 return IOMEM_ERR_PTR(-ENOMEM);
787
788 return regs;
789 }
790
fimc_is_probe(struct platform_device * pdev)791 static int fimc_is_probe(struct platform_device *pdev)
792 {
793 struct device *dev = &pdev->dev;
794 struct fimc_is *is;
795 struct resource res;
796 int ret;
797
798 is = devm_kzalloc(&pdev->dev, sizeof(*is), GFP_KERNEL);
799 if (!is)
800 return -ENOMEM;
801
802 is->pdev = pdev;
803 is->isp.pdev = pdev;
804
805 init_waitqueue_head(&is->irq_queue);
806 spin_lock_init(&is->slock);
807 mutex_init(&is->lock);
808
809 ret = of_address_to_resource(dev->of_node, 0, &res);
810 if (ret < 0)
811 return ret;
812
813 is->regs = devm_ioremap_resource(dev, &res);
814 if (IS_ERR(is->regs))
815 return PTR_ERR(is->regs);
816
817 is->pmu_regs = fimc_is_get_pmu_regs(dev);
818 if (IS_ERR(is->pmu_regs))
819 return PTR_ERR(is->pmu_regs);
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 ret = -EINVAL;
825 goto err_iounmap;
826 }
827
828 ret = fimc_is_get_clocks(is);
829 if (ret < 0)
830 goto err_iounmap;
831
832 platform_set_drvdata(pdev, is);
833
834 ret = request_irq(is->irq, fimc_is_irq_handler, 0, dev_name(dev), is);
835 if (ret < 0) {
836 dev_err(dev, "irq request failed\n");
837 goto err_clk;
838 }
839 pm_runtime_enable(dev);
840
841 if (!pm_runtime_enabled(dev)) {
842 ret = fimc_is_runtime_resume(dev);
843 if (ret < 0)
844 goto err_irq;
845 }
846
847 ret = pm_runtime_resume_and_get(dev);
848 if (ret < 0)
849 goto err_pm_disable;
850
851 vb2_dma_contig_set_max_seg_size(dev, DMA_BIT_MASK(32));
852
853 ret = devm_of_platform_populate(dev);
854 if (ret < 0)
855 goto err_pm;
856
857 /*
858 * Register FIMC-IS V4L2 subdevs to this driver. The video nodes
859 * will be created within the subdev's registered() callback.
860 */
861 ret = fimc_is_register_subdevs(is);
862 if (ret < 0)
863 goto err_pm;
864
865 fimc_is_debugfs_create(is);
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 fimc_is_unregister_subdevs(is);
879 err_pm:
880 pm_runtime_put_noidle(dev);
881 if (!pm_runtime_enabled(dev))
882 fimc_is_runtime_suspend(dev);
883 err_pm_disable:
884 pm_runtime_disable(dev);
885 err_irq:
886 free_irq(is->irq, is);
887 err_clk:
888 fimc_is_put_clocks(is);
889 err_iounmap:
890 iounmap(is->pmu_regs);
891 return ret;
892 }
893
fimc_is_runtime_resume(struct device * dev)894 static int fimc_is_runtime_resume(struct device *dev)
895 {
896 struct fimc_is *is = dev_get_drvdata(dev);
897 int ret;
898
899 ret = fimc_is_setup_clocks(is);
900 if (ret)
901 return ret;
902
903 return fimc_is_enable_clocks(is);
904 }
905
fimc_is_runtime_suspend(struct device * dev)906 static int fimc_is_runtime_suspend(struct device *dev)
907 {
908 struct fimc_is *is = dev_get_drvdata(dev);
909
910 fimc_is_disable_clocks(is);
911 return 0;
912 }
913
914 #ifdef CONFIG_PM_SLEEP
fimc_is_resume(struct device * dev)915 static int fimc_is_resume(struct device *dev)
916 {
917 /* TODO: */
918 return 0;
919 }
920
fimc_is_suspend(struct device * dev)921 static int fimc_is_suspend(struct device *dev)
922 {
923 struct fimc_is *is = dev_get_drvdata(dev);
924
925 /* TODO: */
926 if (test_bit(IS_ST_A5_PWR_ON, &is->state))
927 return -EBUSY;
928
929 return 0;
930 }
931 #endif /* CONFIG_PM_SLEEP */
932
fimc_is_remove(struct platform_device * pdev)933 static void fimc_is_remove(struct platform_device *pdev)
934 {
935 struct device *dev = &pdev->dev;
936 struct fimc_is *is = dev_get_drvdata(dev);
937
938 pm_runtime_disable(dev);
939 pm_runtime_set_suspended(dev);
940 if (!pm_runtime_status_suspended(dev))
941 fimc_is_runtime_suspend(dev);
942 free_irq(is->irq, is);
943 fimc_is_unregister_subdevs(is);
944 vb2_dma_contig_clear_max_seg_size(dev);
945 fimc_is_put_clocks(is);
946 iounmap(is->pmu_regs);
947 fimc_is_debugfs_remove(is);
948 release_firmware(is->fw.f_w);
949 fimc_is_free_cpu_memory(is);
950 }
951
952 static const struct of_device_id fimc_is_of_match[] = {
953 { .compatible = "samsung,exynos4212-fimc-is" },
954 { /* sentinel */ },
955 };
956 MODULE_DEVICE_TABLE(of, fimc_is_of_match);
957
958 static const struct dev_pm_ops fimc_is_pm_ops = {
959 SET_SYSTEM_SLEEP_PM_OPS(fimc_is_suspend, fimc_is_resume)
960 SET_RUNTIME_PM_OPS(fimc_is_runtime_suspend, fimc_is_runtime_resume,
961 NULL)
962 };
963
964 static struct platform_driver fimc_is_driver = {
965 .probe = fimc_is_probe,
966 .remove_new = fimc_is_remove,
967 .driver = {
968 .of_match_table = fimc_is_of_match,
969 .name = FIMC_IS_DRV_NAME,
970 .pm = &fimc_is_pm_ops,
971 }
972 };
973
fimc_is_module_init(void)974 static int fimc_is_module_init(void)
975 {
976 int ret;
977
978 ret = fimc_is_register_i2c_driver();
979 if (ret < 0)
980 return ret;
981
982 ret = platform_driver_register(&fimc_is_driver);
983
984 if (ret < 0)
985 fimc_is_unregister_i2c_driver();
986
987 return ret;
988 }
989
fimc_is_module_exit(void)990 static void fimc_is_module_exit(void)
991 {
992 fimc_is_unregister_i2c_driver();
993 platform_driver_unregister(&fimc_is_driver);
994 }
995
996 module_init(fimc_is_module_init);
997 module_exit(fimc_is_module_exit);
998
999 MODULE_ALIAS("platform:" FIMC_IS_DRV_NAME);
1000 MODULE_AUTHOR("Younghwan Joo <yhwan.joo@samsung.com>");
1001 MODULE_AUTHOR("Sylwester Nawrocki <s.nawrocki@samsung.com>");
1002 MODULE_DESCRIPTION("Samsung EXYNOS4x12 FIMC-IS (Imaging Subsystem) driver");
1003 MODULE_LICENSE("GPL v2");
1004