2 * S5P/EXYNOS4 SoC series camera host interface media device driver
4 * Copyright (C) 2011 - 2013 Samsung Electronics Co., Ltd.
5 * Author: Sylwester Nawrocki <s.nawrocki@samsung.com>
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published
9 * by the Free Software Foundation, either version 2 of the License,
10 * or (at your option) any later version.
13 #include <linux/bug.h>
14 #include <linux/clk.h>
15 #include <linux/clk-provider.h>
16 #include <linux/device.h>
17 #include <linux/errno.h>
18 #include <linux/i2c.h>
19 #include <linux/kernel.h>
20 #include <linux/list.h>
21 #include <linux/module.h>
23 #include <linux/of_platform.h>
24 #include <linux/of_device.h>
25 #include <linux/of_graph.h>
26 #include <linux/platform_device.h>
27 #include <linux/pm_runtime.h>
28 #include <linux/types.h>
29 #include <linux/slab.h>
30 #include <media/v4l2-async.h>
31 #include <media/v4l2-ctrls.h>
32 #include <media/v4l2-of.h>
33 #include <media/media-device.h>
34 #include <media/drv-intf/exynos-fimc.h>
36 #include "media-dev.h"
37 #include "fimc-core.h"
39 #include "fimc-lite.h"
40 #include "mipi-csis.h"
42 /* Set up image sensor subdev -> FIMC capture node notifications. */
43 static void __setup_sensor_notification(struct fimc_md
*fmd
,
44 struct v4l2_subdev
*sensor
,
45 struct v4l2_subdev
*fimc_sd
)
47 struct fimc_source_info
*src_inf
;
48 struct fimc_sensor_info
*md_si
;
51 src_inf
= v4l2_get_subdev_hostdata(sensor
);
52 if (!src_inf
|| WARN_ON(fmd
== NULL
))
55 md_si
= source_to_sensor_info(src_inf
);
56 spin_lock_irqsave(&fmd
->slock
, flags
);
57 md_si
->host
= v4l2_get_subdevdata(fimc_sd
);
58 spin_unlock_irqrestore(&fmd
->slock
, flags
);
62 * fimc_pipeline_prepare - update pipeline information with subdevice pointers
63 * @me: media entity terminating the pipeline
65 * Caller holds the graph mutex.
67 static void fimc_pipeline_prepare(struct fimc_pipeline
*p
,
68 struct media_entity
*me
)
70 struct fimc_md
*fmd
= entity_to_fimc_mdev(me
);
71 struct v4l2_subdev
*sd
;
72 struct v4l2_subdev
*sensor
= NULL
;
75 for (i
= 0; i
< IDX_MAX
; i
++)
79 struct media_pad
*pad
= NULL
;
81 /* Find remote source pad */
82 for (i
= 0; i
< me
->num_pads
; i
++) {
83 struct media_pad
*spad
= &me
->pads
[i
];
84 if (!(spad
->flags
& MEDIA_PAD_FL_SINK
))
86 pad
= media_entity_remote_pad(spad
);
91 if (!pad
|| !is_media_entity_v4l2_subdev(pad
->entity
))
93 sd
= media_entity_to_v4l2_subdev(pad
->entity
);
99 case GRP_ID_FIMC_IS_SENSOR
:
100 p
->subdevs
[IDX_SENSOR
] = sd
;
103 p
->subdevs
[IDX_CSIS
] = sd
;
106 p
->subdevs
[IDX_FLITE
] = sd
;
109 p
->subdevs
[IDX_FIMC
] = sd
;
112 p
->subdevs
[IDX_IS_ISP
] = sd
;
118 if (me
->num_pads
== 1)
122 if (sensor
&& p
->subdevs
[IDX_FIMC
])
123 __setup_sensor_notification(fmd
, sensor
, p
->subdevs
[IDX_FIMC
]);
127 * __subdev_set_power - change power state of a single subdev
128 * @sd: subdevice to change power state for
129 * @on: 1 to enable power or 0 to disable
131 * Return result of s_power subdev operation or -ENXIO if sd argument
132 * is NULL. Return 0 if the subdevice does not implement s_power.
134 static int __subdev_set_power(struct v4l2_subdev
*sd
, int on
)
142 use_count
= &sd
->entity
.use_count
;
143 if (on
&& (*use_count
)++ > 0)
145 else if (!on
&& (*use_count
== 0 || --(*use_count
) > 0))
147 ret
= v4l2_subdev_call(sd
, core
, s_power
, on
);
149 return ret
!= -ENOIOCTLCMD
? ret
: 0;
153 * fimc_pipeline_s_power - change power state of all pipeline subdevs
154 * @fimc: fimc device terminating the pipeline
155 * @state: true to power on, false to power off
157 * Needs to be called with the graph mutex held.
159 static int fimc_pipeline_s_power(struct fimc_pipeline
*p
, bool on
)
161 static const u8 seq
[2][IDX_MAX
- 1] = {
162 { IDX_IS_ISP
, IDX_SENSOR
, IDX_CSIS
, IDX_FLITE
},
163 { IDX_CSIS
, IDX_FLITE
, IDX_SENSOR
, IDX_IS_ISP
},
167 if (p
->subdevs
[IDX_SENSOR
] == NULL
)
170 for (i
= 0; i
< IDX_MAX
- 1; i
++) {
171 unsigned int idx
= seq
[on
][i
];
173 ret
= __subdev_set_power(p
->subdevs
[idx
], on
);
176 if (ret
< 0 && ret
!= -ENXIO
)
181 for (; i
>= 0; i
--) {
182 unsigned int idx
= seq
[on
][i
];
183 __subdev_set_power(p
->subdevs
[idx
], !on
);
189 * __fimc_pipeline_enable - enable power of all pipeline subdevs
190 * and the sensor clock
191 * @ep: video pipeline structure
192 * @fmd: fimc media device
194 * Called with the graph mutex held.
196 static int __fimc_pipeline_enable(struct exynos_media_pipeline
*ep
,
199 struct fimc_pipeline
*p
= to_fimc_pipeline(ep
);
202 /* Enable PXLASYNC clock if this pipeline includes FIMC-IS */
203 if (!IS_ERR(fmd
->wbclk
[CLK_IDX_WB_B
]) && p
->subdevs
[IDX_IS_ISP
]) {
204 ret
= clk_prepare_enable(fmd
->wbclk
[CLK_IDX_WB_B
]);
209 ret
= fimc_pipeline_s_power(p
, 1);
213 if (!IS_ERR(fmd
->wbclk
[CLK_IDX_WB_B
]) && p
->subdevs
[IDX_IS_ISP
])
214 clk_disable_unprepare(fmd
->wbclk
[CLK_IDX_WB_B
]);
220 * __fimc_pipeline_open - update the pipeline information, enable power
221 * of all pipeline subdevs and the sensor clock
222 * @me: media entity to start graph walk with
223 * @prepare: true to walk the current pipeline and acquire all subdevs
225 * Called with the graph mutex held.
227 static int __fimc_pipeline_open(struct exynos_media_pipeline
*ep
,
228 struct media_entity
*me
, bool prepare
)
230 struct fimc_md
*fmd
= entity_to_fimc_mdev(me
);
231 struct fimc_pipeline
*p
= to_fimc_pipeline(ep
);
232 struct v4l2_subdev
*sd
;
234 if (WARN_ON(p
== NULL
|| me
== NULL
))
238 fimc_pipeline_prepare(p
, me
);
240 sd
= p
->subdevs
[IDX_SENSOR
];
242 pr_warn("%s(): No sensor subdev\n", __func__
);
244 * Pipeline open cannot fail so as to make it possible
245 * for the user space to configure the pipeline.
250 return __fimc_pipeline_enable(ep
, fmd
);
254 * __fimc_pipeline_close - disable the sensor clock and pipeline power
255 * @fimc: fimc device terminating the pipeline
257 * Disable power of all subdevs and turn the external sensor clock off.
259 static int __fimc_pipeline_close(struct exynos_media_pipeline
*ep
)
261 struct fimc_pipeline
*p
= to_fimc_pipeline(ep
);
262 struct v4l2_subdev
*sd
= p
? p
->subdevs
[IDX_SENSOR
] : NULL
;
267 pr_warn("%s(): No sensor subdev\n", __func__
);
271 ret
= fimc_pipeline_s_power(p
, 0);
273 fmd
= entity_to_fimc_mdev(&sd
->entity
);
275 /* Disable PXLASYNC clock if this pipeline includes FIMC-IS */
276 if (!IS_ERR(fmd
->wbclk
[CLK_IDX_WB_B
]) && p
->subdevs
[IDX_IS_ISP
])
277 clk_disable_unprepare(fmd
->wbclk
[CLK_IDX_WB_B
]);
279 return ret
== -ENXIO
? 0 : ret
;
283 * __fimc_pipeline_s_stream - call s_stream() on pipeline subdevs
284 * @pipeline: video pipeline structure
285 * @on: passed as the s_stream() callback argument
287 static int __fimc_pipeline_s_stream(struct exynos_media_pipeline
*ep
, bool on
)
289 static const u8 seq
[2][IDX_MAX
] = {
290 { IDX_FIMC
, IDX_SENSOR
, IDX_IS_ISP
, IDX_CSIS
, IDX_FLITE
},
291 { IDX_CSIS
, IDX_FLITE
, IDX_FIMC
, IDX_SENSOR
, IDX_IS_ISP
},
293 struct fimc_pipeline
*p
= to_fimc_pipeline(ep
);
294 struct fimc_md
*fmd
= entity_to_fimc_mdev(&p
->subdevs
[IDX_CSIS
]->entity
);
295 enum fimc_subdev_index sd_id
;
298 if (p
->subdevs
[IDX_SENSOR
] == NULL
) {
299 if (!fmd
->user_subdev_api
) {
301 * Sensor must be already discovered if we
302 * aren't in the user_subdev_api mode
307 /* Get pipeline sink entity */
308 if (p
->subdevs
[IDX_FIMC
])
310 else if (p
->subdevs
[IDX_IS_ISP
])
312 else if (p
->subdevs
[IDX_FLITE
])
318 * Sensor could have been linked between open and STREAMON -
319 * check if this is the case.
321 fimc_pipeline_prepare(p
, &p
->subdevs
[sd_id
]->entity
);
323 if (p
->subdevs
[IDX_SENSOR
] == NULL
)
326 ret
= __fimc_pipeline_enable(ep
, fmd
);
332 for (i
= 0; i
< IDX_MAX
; i
++) {
333 unsigned int idx
= seq
[on
][i
];
335 ret
= v4l2_subdev_call(p
->subdevs
[idx
], video
, s_stream
, on
);
337 if (ret
< 0 && ret
!= -ENOIOCTLCMD
&& ret
!= -ENODEV
)
343 fimc_pipeline_s_power(p
, !on
);
344 for (; i
>= 0; i
--) {
345 unsigned int idx
= seq
[on
][i
];
346 v4l2_subdev_call(p
->subdevs
[idx
], video
, s_stream
, !on
);
351 /* Media pipeline operations for the FIMC/FIMC-LITE video device driver */
352 static const struct exynos_media_pipeline_ops fimc_pipeline_ops
= {
353 .open
= __fimc_pipeline_open
,
354 .close
= __fimc_pipeline_close
,
355 .set_stream
= __fimc_pipeline_s_stream
,
358 static struct exynos_media_pipeline
*fimc_md_pipeline_create(
361 struct fimc_pipeline
*p
;
363 p
= kzalloc(sizeof(*p
), GFP_KERNEL
);
367 list_add_tail(&p
->list
, &fmd
->pipelines
);
369 p
->ep
.ops
= &fimc_pipeline_ops
;
373 static void fimc_md_pipelines_free(struct fimc_md
*fmd
)
375 while (!list_empty(&fmd
->pipelines
)) {
376 struct fimc_pipeline
*p
;
378 p
= list_entry(fmd
->pipelines
.next
, typeof(*p
), list
);
384 /* Parse port node and register as a sub-device any sensor specified there. */
385 static int fimc_md_parse_port_node(struct fimc_md
*fmd
,
386 struct device_node
*port
,
389 struct fimc_source_info
*pd
= &fmd
->sensor
[index
].pdata
;
390 struct device_node
*rem
, *ep
, *np
;
391 struct v4l2_of_endpoint endpoint
;
394 /* Assume here a port node can have only one endpoint node. */
395 ep
= of_get_next_child(port
, NULL
);
399 ret
= v4l2_of_parse_endpoint(ep
, &endpoint
);
405 if (WARN_ON(endpoint
.base
.port
== 0) || index
>= FIMC_MAX_SENSORS
)
408 pd
->mux_id
= (endpoint
.base
.port
- 1) & 0x1;
410 rem
= of_graph_get_remote_port_parent(ep
);
413 v4l2_info(&fmd
->v4l2_dev
, "Remote device at %s not found\n",
418 if (fimc_input_is_parallel(endpoint
.base
.port
)) {
419 if (endpoint
.bus_type
== V4L2_MBUS_PARALLEL
)
420 pd
->sensor_bus_type
= FIMC_BUS_TYPE_ITU_601
;
422 pd
->sensor_bus_type
= FIMC_BUS_TYPE_ITU_656
;
423 pd
->flags
= endpoint
.bus
.parallel
.flags
;
424 } else if (fimc_input_is_mipi_csi(endpoint
.base
.port
)) {
426 * MIPI CSI-2: only input mux selection and
427 * the sensor's clock frequency is needed.
429 pd
->sensor_bus_type
= FIMC_BUS_TYPE_MIPI_CSI2
;
431 v4l2_err(&fmd
->v4l2_dev
, "Wrong port id (%u) at node %s\n",
432 endpoint
.base
.port
, rem
->full_name
);
435 * For FIMC-IS handled sensors, that are placed under i2c-isp device
436 * node, FIMC is connected to the FIMC-IS through its ISP Writeback
437 * input. Sensors are attached to the FIMC-LITE hostdata interface
438 * directly or through MIPI-CSIS, depending on the external media bus
439 * used. This needs to be handled in a more reliable way, not by just
440 * checking parent's node name.
442 np
= of_get_parent(rem
);
444 if (np
&& !of_node_cmp(np
->name
, "i2c-isp"))
445 pd
->fimc_bus_type
= FIMC_BUS_TYPE_ISP_WRITEBACK
;
447 pd
->fimc_bus_type
= pd
->sensor_bus_type
;
449 if (WARN_ON(index
>= ARRAY_SIZE(fmd
->sensor
))) {
454 fmd
->sensor
[index
].asd
.match_type
= V4L2_ASYNC_MATCH_OF
;
455 fmd
->sensor
[index
].asd
.match
.of
.node
= rem
;
456 fmd
->async_subdevs
[index
] = &fmd
->sensor
[index
].asd
;
464 /* Register all SoC external sub-devices */
465 static int fimc_md_register_sensor_entities(struct fimc_md
*fmd
)
467 struct device_node
*parent
= fmd
->pdev
->dev
.of_node
;
468 struct device_node
*node
, *ports
;
473 * Runtime resume one of the FIMC entities to make sure
474 * the sclk_cam clocks are not globally disabled.
479 ret
= pm_runtime_get_sync(fmd
->pmf
);
483 fmd
->num_sensors
= 0;
485 /* Attach sensors linked to MIPI CSI-2 receivers */
486 for_each_available_child_of_node(parent
, node
) {
487 struct device_node
*port
;
489 if (of_node_cmp(node
->name
, "csis"))
491 /* The csis node can have only port subnode. */
492 port
= of_get_next_child(node
, NULL
);
496 ret
= fimc_md_parse_port_node(fmd
, port
, index
);
504 /* Attach sensors listed in the parallel-ports node */
505 ports
= of_get_child_by_name(parent
, "parallel-ports");
509 for_each_child_of_node(ports
, node
) {
510 ret
= fimc_md_parse_port_node(fmd
, node
, index
);
518 pm_runtime_put(fmd
->pmf
);
522 static int __of_get_csis_id(struct device_node
*np
)
526 np
= of_get_child_by_name(np
, "port");
529 of_property_read_u32(np
, "reg", ®
);
530 return reg
- FIMC_INPUT_MIPI_CSI2_0
;
534 * MIPI-CSIS, FIMC and FIMC-LITE platform devices registration.
536 static int register_fimc_lite_entity(struct fimc_md
*fmd
,
537 struct fimc_lite
*fimc_lite
)
539 struct v4l2_subdev
*sd
;
540 struct exynos_media_pipeline
*ep
;
543 if (WARN_ON(fimc_lite
->index
>= FIMC_LITE_MAX_DEVS
||
544 fmd
->fimc_lite
[fimc_lite
->index
]))
547 sd
= &fimc_lite
->subdev
;
548 sd
->grp_id
= GRP_ID_FLITE
;
550 ep
= fimc_md_pipeline_create(fmd
);
554 v4l2_set_subdev_hostdata(sd
, ep
);
556 ret
= v4l2_device_register_subdev(&fmd
->v4l2_dev
, sd
);
558 fmd
->fimc_lite
[fimc_lite
->index
] = fimc_lite
;
560 v4l2_err(&fmd
->v4l2_dev
, "Failed to register FIMC.LITE%d\n",
565 static int register_fimc_entity(struct fimc_md
*fmd
, struct fimc_dev
*fimc
)
567 struct v4l2_subdev
*sd
;
568 struct exynos_media_pipeline
*ep
;
571 if (WARN_ON(fimc
->id
>= FIMC_MAX_DEVS
|| fmd
->fimc
[fimc
->id
]))
574 sd
= &fimc
->vid_cap
.subdev
;
575 sd
->grp_id
= GRP_ID_FIMC
;
577 ep
= fimc_md_pipeline_create(fmd
);
581 v4l2_set_subdev_hostdata(sd
, ep
);
583 ret
= v4l2_device_register_subdev(&fmd
->v4l2_dev
, sd
);
585 if (!fmd
->pmf
&& fimc
->pdev
)
586 fmd
->pmf
= &fimc
->pdev
->dev
;
587 fmd
->fimc
[fimc
->id
] = fimc
;
588 fimc
->vid_cap
.user_subdev_api
= fmd
->user_subdev_api
;
590 v4l2_err(&fmd
->v4l2_dev
, "Failed to register FIMC.%d (%d)\n",
596 static int register_csis_entity(struct fimc_md
*fmd
,
597 struct platform_device
*pdev
,
598 struct v4l2_subdev
*sd
)
600 struct device_node
*node
= pdev
->dev
.of_node
;
603 id
= node
? __of_get_csis_id(node
) : max(0, pdev
->id
);
605 if (WARN_ON(id
< 0 || id
>= CSIS_MAX_ENTITIES
))
608 if (WARN_ON(fmd
->csis
[id
].sd
))
611 sd
->grp_id
= GRP_ID_CSIS
;
612 ret
= v4l2_device_register_subdev(&fmd
->v4l2_dev
, sd
);
614 fmd
->csis
[id
].sd
= sd
;
616 v4l2_err(&fmd
->v4l2_dev
,
617 "Failed to register MIPI-CSIS.%d (%d)\n", id
, ret
);
621 static int register_fimc_is_entity(struct fimc_md
*fmd
, struct fimc_is
*is
)
623 struct v4l2_subdev
*sd
= &is
->isp
.subdev
;
624 struct exynos_media_pipeline
*ep
;
627 /* Allocate pipeline object for the ISP capture video node. */
628 ep
= fimc_md_pipeline_create(fmd
);
632 v4l2_set_subdev_hostdata(sd
, ep
);
634 ret
= v4l2_device_register_subdev(&fmd
->v4l2_dev
, sd
);
636 v4l2_err(&fmd
->v4l2_dev
,
637 "Failed to register FIMC-ISP (%d)\n", ret
);
645 static int fimc_md_register_platform_entity(struct fimc_md
*fmd
,
646 struct platform_device
*pdev
,
649 struct device
*dev
= &pdev
->dev
;
650 int ret
= -EPROBE_DEFER
;
653 /* Lock to ensure dev->driver won't change. */
656 if (!dev
->driver
|| !try_module_get(dev
->driver
->owner
))
659 drvdata
= dev_get_drvdata(dev
);
660 /* Some subdev didn't probe successfully id drvdata is NULL */
662 switch (plat_entity
) {
664 ret
= register_fimc_entity(fmd
, drvdata
);
667 ret
= register_fimc_lite_entity(fmd
, drvdata
);
670 ret
= register_csis_entity(fmd
, pdev
, drvdata
);
673 ret
= register_fimc_is_entity(fmd
, drvdata
);
680 module_put(dev
->driver
->owner
);
683 if (ret
== -EPROBE_DEFER
)
684 dev_info(&fmd
->pdev
->dev
, "deferring %s device registration\n",
687 dev_err(&fmd
->pdev
->dev
, "%s device registration failed (%d)\n",
692 /* Register FIMC, FIMC-LITE and CSIS media entities */
693 static int fimc_md_register_platform_entities(struct fimc_md
*fmd
,
694 struct device_node
*parent
)
696 struct device_node
*node
;
699 for_each_available_child_of_node(parent
, node
) {
700 struct platform_device
*pdev
;
701 int plat_entity
= -1;
703 pdev
= of_find_device_by_node(node
);
707 /* If driver of any entity isn't ready try all again later. */
708 if (!strcmp(node
->name
, CSIS_OF_NODE_NAME
))
709 plat_entity
= IDX_CSIS
;
710 else if (!strcmp(node
->name
, FIMC_IS_OF_NODE_NAME
))
711 plat_entity
= IDX_IS_ISP
;
712 else if (!strcmp(node
->name
, FIMC_LITE_OF_NODE_NAME
))
713 plat_entity
= IDX_FLITE
;
714 else if (!strcmp(node
->name
, FIMC_OF_NODE_NAME
) &&
715 !of_property_read_bool(node
, "samsung,lcd-wb"))
716 plat_entity
= IDX_FIMC
;
718 if (plat_entity
>= 0)
719 ret
= fimc_md_register_platform_entity(fmd
, pdev
,
721 put_device(&pdev
->dev
);
731 static void fimc_md_unregister_entities(struct fimc_md
*fmd
)
735 for (i
= 0; i
< FIMC_MAX_DEVS
; i
++) {
736 struct fimc_dev
*dev
= fmd
->fimc
[i
];
739 v4l2_device_unregister_subdev(&dev
->vid_cap
.subdev
);
740 dev
->vid_cap
.ve
.pipe
= NULL
;
743 for (i
= 0; i
< FIMC_LITE_MAX_DEVS
; i
++) {
744 struct fimc_lite
*dev
= fmd
->fimc_lite
[i
];
747 v4l2_device_unregister_subdev(&dev
->subdev
);
749 fmd
->fimc_lite
[i
] = NULL
;
751 for (i
= 0; i
< CSIS_MAX_ENTITIES
; i
++) {
752 if (fmd
->csis
[i
].sd
== NULL
)
754 v4l2_device_unregister_subdev(fmd
->csis
[i
].sd
);
755 fmd
->csis
[i
].sd
= NULL
;
759 v4l2_device_unregister_subdev(&fmd
->fimc_is
->isp
.subdev
);
761 v4l2_info(&fmd
->v4l2_dev
, "Unregistered all entities\n");
765 * __fimc_md_create_fimc_links - create links to all FIMC entities
766 * @fmd: fimc media device
767 * @source: the source entity to create links to all fimc entities from
768 * @sensor: sensor subdev linked to FIMC[fimc_id] entity, may be null
769 * @pad: the source entity pad index
770 * @link_mask: bitmask of the fimc devices for which link should be enabled
772 static int __fimc_md_create_fimc_sink_links(struct fimc_md
*fmd
,
773 struct media_entity
*source
,
774 struct v4l2_subdev
*sensor
,
775 int pad
, int link_mask
)
777 struct fimc_source_info
*si
= NULL
;
778 struct media_entity
*sink
;
779 unsigned int flags
= 0;
783 si
= v4l2_get_subdev_hostdata(sensor
);
784 /* Skip direct FIMC links in the logical FIMC-IS sensor path */
785 if (si
&& si
->fimc_bus_type
== FIMC_BUS_TYPE_ISP_WRITEBACK
)
789 for (i
= 0; !ret
&& i
< FIMC_MAX_DEVS
; i
++) {
793 * Some FIMC variants are not fitted with camera capture
794 * interface. Skip creating a link from sensor for those.
796 if (!fmd
->fimc
[i
]->variant
->has_cam_if
)
799 flags
= ((1 << i
) & link_mask
) ? MEDIA_LNK_FL_ENABLED
: 0;
801 sink
= &fmd
->fimc
[i
]->vid_cap
.subdev
.entity
;
802 ret
= media_create_pad_link(source
, pad
, sink
,
803 FIMC_SD_PAD_SINK_CAM
, flags
);
807 /* Notify FIMC capture subdev entity */
808 ret
= media_entity_call(sink
, link_setup
, &sink
->pads
[0],
809 &source
->pads
[pad
], flags
);
813 v4l2_info(&fmd
->v4l2_dev
, "created link [%s] %c> [%s]\n",
814 source
->name
, flags
? '=' : '-', sink
->name
);
817 for (i
= 0; i
< FIMC_LITE_MAX_DEVS
; i
++) {
818 if (!fmd
->fimc_lite
[i
])
821 sink
= &fmd
->fimc_lite
[i
]->subdev
.entity
;
822 ret
= media_create_pad_link(source
, pad
, sink
,
823 FLITE_SD_PAD_SINK
, 0);
827 /* Notify FIMC-LITE subdev entity */
828 ret
= media_entity_call(sink
, link_setup
, &sink
->pads
[0],
829 &source
->pads
[pad
], 0);
833 v4l2_info(&fmd
->v4l2_dev
, "created link [%s] -> [%s]\n",
834 source
->name
, sink
->name
);
839 /* Create links from FIMC-LITE source pads to other entities */
840 static int __fimc_md_create_flite_source_links(struct fimc_md
*fmd
)
842 struct media_entity
*source
, *sink
;
845 for (i
= 0; i
< FIMC_LITE_MAX_DEVS
; i
++) {
846 struct fimc_lite
*fimc
= fmd
->fimc_lite
[i
];
851 source
= &fimc
->subdev
.entity
;
852 sink
= &fimc
->ve
.vdev
.entity
;
853 /* FIMC-LITE's subdev and video node */
854 ret
= media_create_pad_link(source
, FLITE_SD_PAD_SOURCE_DMA
,
858 /* Link from FIMC-LITE to IS-ISP subdev */
859 sink
= &fmd
->fimc_is
->isp
.subdev
.entity
;
860 ret
= media_create_pad_link(source
, FLITE_SD_PAD_SOURCE_ISP
,
869 /* Create FIMC-IS links */
870 static int __fimc_md_create_fimc_is_links(struct fimc_md
*fmd
)
872 struct fimc_isp
*isp
= &fmd
->fimc_is
->isp
;
873 struct media_entity
*source
, *sink
;
876 source
= &isp
->subdev
.entity
;
878 for (i
= 0; i
< FIMC_MAX_DEVS
; i
++) {
879 if (fmd
->fimc
[i
] == NULL
)
882 /* Link from FIMC-IS-ISP subdev to FIMC */
883 sink
= &fmd
->fimc
[i
]->vid_cap
.subdev
.entity
;
884 ret
= media_create_pad_link(source
, FIMC_ISP_SD_PAD_SRC_FIFO
,
885 sink
, FIMC_SD_PAD_SINK_FIFO
, 0);
890 /* Link from FIMC-IS-ISP subdev to fimc-is-isp.capture video node */
891 sink
= &isp
->video_capture
.ve
.vdev
.entity
;
893 /* Skip this link if the fimc-is-isp video node driver isn't built-in */
894 if (sink
->num_pads
== 0)
897 return media_create_pad_link(source
, FIMC_ISP_SD_PAD_SRC_DMA
,
902 * fimc_md_create_links - create default links between registered entities
904 * Parallel interface sensor entities are connected directly to FIMC capture
905 * entities. The sensors using MIPI CSIS bus are connected through immutable
906 * link with CSI receiver entity specified by mux_id. Any registered CSIS
907 * entity has a link to each registered FIMC capture entity. Enabled links
908 * are created by default between each subsequent registered sensor and
909 * subsequent FIMC capture entity. The number of default active links is
910 * determined by the number of available sensors or FIMC entities,
913 static int fimc_md_create_links(struct fimc_md
*fmd
)
915 struct v4l2_subdev
*csi_sensors
[CSIS_MAX_ENTITIES
] = { NULL
};
916 struct v4l2_subdev
*sensor
, *csis
;
917 struct fimc_source_info
*pdata
;
918 struct media_entity
*source
, *sink
;
919 int i
, pad
, fimc_id
= 0, ret
= 0;
920 u32 flags
, link_mask
= 0;
922 for (i
= 0; i
< fmd
->num_sensors
; i
++) {
923 if (fmd
->sensor
[i
].subdev
== NULL
)
926 sensor
= fmd
->sensor
[i
].subdev
;
927 pdata
= v4l2_get_subdev_hostdata(sensor
);
933 switch (pdata
->sensor_bus_type
) {
934 case FIMC_BUS_TYPE_MIPI_CSI2
:
935 if (WARN(pdata
->mux_id
>= CSIS_MAX_ENTITIES
,
936 "Wrong CSI channel id: %d\n", pdata
->mux_id
))
939 csis
= fmd
->csis
[pdata
->mux_id
].sd
;
940 if (WARN(csis
== NULL
,
941 "MIPI-CSI interface specified "
942 "but s5p-csis module is not loaded!\n"))
945 pad
= sensor
->entity
.num_pads
- 1;
946 ret
= media_create_pad_link(&sensor
->entity
, pad
,
947 &csis
->entity
, CSIS_PAD_SINK
,
948 MEDIA_LNK_FL_IMMUTABLE
|
949 MEDIA_LNK_FL_ENABLED
);
953 v4l2_info(&fmd
->v4l2_dev
, "created link [%s] => [%s]\n",
954 sensor
->entity
.name
, csis
->entity
.name
);
957 csi_sensors
[pdata
->mux_id
] = sensor
;
960 case FIMC_BUS_TYPE_ITU_601
...FIMC_BUS_TYPE_ITU_656
:
961 source
= &sensor
->entity
;
966 v4l2_err(&fmd
->v4l2_dev
, "Wrong bus_type: %x\n",
967 pdata
->sensor_bus_type
);
973 link_mask
= 1 << fimc_id
++;
974 ret
= __fimc_md_create_fimc_sink_links(fmd
, source
, sensor
,
978 for (i
= 0; i
< CSIS_MAX_ENTITIES
; i
++) {
979 if (fmd
->csis
[i
].sd
== NULL
)
982 source
= &fmd
->csis
[i
].sd
->entity
;
983 pad
= CSIS_PAD_SOURCE
;
984 sensor
= csi_sensors
[i
];
986 link_mask
= 1 << fimc_id
++;
987 ret
= __fimc_md_create_fimc_sink_links(fmd
, source
, sensor
,
991 /* Create immutable links between each FIMC's subdev and video node */
992 flags
= MEDIA_LNK_FL_IMMUTABLE
| MEDIA_LNK_FL_ENABLED
;
993 for (i
= 0; i
< FIMC_MAX_DEVS
; i
++) {
997 source
= &fmd
->fimc
[i
]->vid_cap
.subdev
.entity
;
998 sink
= &fmd
->fimc
[i
]->vid_cap
.ve
.vdev
.entity
;
1000 ret
= media_create_pad_link(source
, FIMC_SD_PAD_SOURCE
,
1006 ret
= __fimc_md_create_flite_source_links(fmd
);
1011 ret
= __fimc_md_create_fimc_is_links(fmd
);
1017 * The peripheral sensor and CAM_BLK (PIXELASYNCMx) clocks management.
1019 static void fimc_md_put_clocks(struct fimc_md
*fmd
)
1021 int i
= FIMC_MAX_CAMCLKS
;
1024 if (IS_ERR(fmd
->camclk
[i
].clock
))
1026 clk_put(fmd
->camclk
[i
].clock
);
1027 fmd
->camclk
[i
].clock
= ERR_PTR(-EINVAL
);
1030 /* Writeback (PIXELASYNCMx) clocks */
1031 for (i
= 0; i
< FIMC_MAX_WBCLKS
; i
++) {
1032 if (IS_ERR(fmd
->wbclk
[i
]))
1034 clk_put(fmd
->wbclk
[i
]);
1035 fmd
->wbclk
[i
] = ERR_PTR(-EINVAL
);
1039 static int fimc_md_get_clocks(struct fimc_md
*fmd
)
1041 struct device
*dev
= &fmd
->pdev
->dev
;
1046 for (i
= 0; i
< FIMC_MAX_CAMCLKS
; i
++)
1047 fmd
->camclk
[i
].clock
= ERR_PTR(-EINVAL
);
1049 for (i
= 0; i
< FIMC_MAX_CAMCLKS
; i
++) {
1050 snprintf(clk_name
, sizeof(clk_name
), "sclk_cam%u", i
);
1051 clock
= clk_get(dev
, clk_name
);
1053 if (IS_ERR(clock
)) {
1054 dev_err(dev
, "Failed to get clock: %s\n", clk_name
);
1055 ret
= PTR_ERR(clock
);
1058 fmd
->camclk
[i
].clock
= clock
;
1061 fimc_md_put_clocks(fmd
);
1066 * For now get only PIXELASYNCM1 clock (Writeback B/ISP),
1067 * leave PIXELASYNCM0 out for the LCD Writeback driver.
1069 fmd
->wbclk
[CLK_IDX_WB_A
] = ERR_PTR(-EINVAL
);
1071 for (i
= CLK_IDX_WB_B
; i
< FIMC_MAX_WBCLKS
; i
++) {
1072 snprintf(clk_name
, sizeof(clk_name
), "pxl_async%u", i
);
1073 clock
= clk_get(dev
, clk_name
);
1074 if (IS_ERR(clock
)) {
1075 v4l2_err(&fmd
->v4l2_dev
, "Failed to get clock: %s\n",
1077 ret
= PTR_ERR(clock
);
1080 fmd
->wbclk
[i
] = clock
;
1083 fimc_md_put_clocks(fmd
);
1088 static int __fimc_md_modify_pipeline(struct media_entity
*entity
, bool enable
)
1090 struct exynos_video_entity
*ve
;
1091 struct fimc_pipeline
*p
;
1092 struct video_device
*vdev
;
1095 vdev
= media_entity_to_video_device(entity
);
1096 if (vdev
->entity
.use_count
== 0)
1099 ve
= vdev_to_exynos_video_entity(vdev
);
1100 p
= to_fimc_pipeline(ve
->pipe
);
1102 * Nothing to do if we are disabling the pipeline, some link
1103 * has been disconnected and p->subdevs array is cleared now.
1105 if (!enable
&& p
->subdevs
[IDX_SENSOR
] == NULL
)
1109 ret
= __fimc_pipeline_open(ve
->pipe
, entity
, true);
1111 ret
= __fimc_pipeline_close(ve
->pipe
);
1113 if (ret
== 0 && !enable
)
1114 memset(p
->subdevs
, 0, sizeof(p
->subdevs
));
1119 /* Locking: called with entity->graph_obj.mdev->graph_mutex mutex held. */
1120 static int __fimc_md_modify_pipelines(struct media_entity
*entity
, bool enable
,
1121 struct media_entity_graph
*graph
)
1123 struct media_entity
*entity_err
= entity
;
1127 * Walk current graph and call the pipeline open/close routine for each
1128 * opened video node that belongs to the graph of entities connected
1129 * through active links. This is needed as we cannot power on/off the
1130 * subdevs in random order.
1132 media_entity_graph_walk_start(graph
, entity
);
1134 while ((entity
= media_entity_graph_walk_next(graph
))) {
1135 if (!is_media_entity_v4l2_video_device(entity
))
1138 ret
= __fimc_md_modify_pipeline(entity
, enable
);
1147 media_entity_graph_walk_start(graph
, entity_err
);
1149 while ((entity_err
= media_entity_graph_walk_next(graph
))) {
1150 if (!is_media_entity_v4l2_video_device(entity_err
))
1153 __fimc_md_modify_pipeline(entity_err
, !enable
);
1155 if (entity_err
== entity
)
1162 static int fimc_md_link_notify(struct media_link
*link
, unsigned int flags
,
1163 unsigned int notification
)
1165 struct media_entity_graph
*graph
=
1166 &container_of(link
->graph_obj
.mdev
, struct fimc_md
,
1167 media_dev
)->link_setup_graph
;
1168 struct media_entity
*sink
= link
->sink
->entity
;
1171 /* Before link disconnection */
1172 if (notification
== MEDIA_DEV_NOTIFY_PRE_LINK_CH
) {
1173 ret
= media_entity_graph_walk_init(graph
,
1174 link
->graph_obj
.mdev
);
1177 if (!(flags
& MEDIA_LNK_FL_ENABLED
))
1178 ret
= __fimc_md_modify_pipelines(sink
, false, graph
);
1181 /* TODO: Link state change validation */
1183 /* After link activation */
1184 } else if (notification
== MEDIA_DEV_NOTIFY_POST_LINK_CH
) {
1185 if (link
->flags
& MEDIA_LNK_FL_ENABLED
)
1186 ret
= __fimc_md_modify_pipelines(sink
, true, graph
);
1187 media_entity_graph_walk_cleanup(graph
);
1190 return ret
? -EPIPE
: 0;
1193 static ssize_t
fimc_md_sysfs_show(struct device
*dev
,
1194 struct device_attribute
*attr
, char *buf
)
1196 struct platform_device
*pdev
= to_platform_device(dev
);
1197 struct fimc_md
*fmd
= platform_get_drvdata(pdev
);
1199 if (fmd
->user_subdev_api
)
1200 return strlcpy(buf
, "Sub-device API (sub-dev)\n", PAGE_SIZE
);
1202 return strlcpy(buf
, "V4L2 video node only API (vid-dev)\n", PAGE_SIZE
);
1205 static ssize_t
fimc_md_sysfs_store(struct device
*dev
,
1206 struct device_attribute
*attr
,
1207 const char *buf
, size_t count
)
1209 struct platform_device
*pdev
= to_platform_device(dev
);
1210 struct fimc_md
*fmd
= platform_get_drvdata(pdev
);
1214 if (!strcmp(buf
, "vid-dev\n"))
1216 else if (!strcmp(buf
, "sub-dev\n"))
1221 fmd
->user_subdev_api
= subdev_api
;
1222 for (i
= 0; i
< FIMC_MAX_DEVS
; i
++)
1224 fmd
->fimc
[i
]->vid_cap
.user_subdev_api
= subdev_api
;
1228 * This device attribute is to select video pipeline configuration method.
1229 * There are following valid values:
1230 * vid-dev - for V4L2 video node API only, subdevice will be configured
1231 * by the host driver.
1232 * sub-dev - for media controller API, subdevs must be configured in user
1233 * space before starting streaming.
1235 static DEVICE_ATTR(subdev_conf_mode
, S_IWUSR
| S_IRUGO
,
1236 fimc_md_sysfs_show
, fimc_md_sysfs_store
);
1238 static int fimc_md_get_pinctrl(struct fimc_md
*fmd
)
1240 struct device
*dev
= &fmd
->pdev
->dev
;
1241 struct fimc_pinctrl
*pctl
= &fmd
->pinctl
;
1243 pctl
->pinctrl
= devm_pinctrl_get(dev
);
1244 if (IS_ERR(pctl
->pinctrl
))
1245 return PTR_ERR(pctl
->pinctrl
);
1247 pctl
->state_default
= pinctrl_lookup_state(pctl
->pinctrl
,
1248 PINCTRL_STATE_DEFAULT
);
1249 if (IS_ERR(pctl
->state_default
))
1250 return PTR_ERR(pctl
->state_default
);
1252 pctl
->state_idle
= pinctrl_lookup_state(pctl
->pinctrl
,
1253 PINCTRL_STATE_IDLE
);
1257 static int cam_clk_prepare(struct clk_hw
*hw
)
1259 struct cam_clk
*camclk
= to_cam_clk(hw
);
1262 if (camclk
->fmd
->pmf
== NULL
)
1265 ret
= pm_runtime_get_sync(camclk
->fmd
->pmf
);
1266 return ret
< 0 ? ret
: 0;
1269 static void cam_clk_unprepare(struct clk_hw
*hw
)
1271 struct cam_clk
*camclk
= to_cam_clk(hw
);
1273 if (camclk
->fmd
->pmf
== NULL
)
1276 pm_runtime_put_sync(camclk
->fmd
->pmf
);
1279 static const struct clk_ops cam_clk_ops
= {
1280 .prepare
= cam_clk_prepare
,
1281 .unprepare
= cam_clk_unprepare
,
1284 static void fimc_md_unregister_clk_provider(struct fimc_md
*fmd
)
1286 struct cam_clk_provider
*cp
= &fmd
->clk_provider
;
1290 of_clk_del_provider(cp
->of_node
);
1292 for (i
= 0; i
< cp
->num_clocks
; i
++)
1293 clk_unregister(cp
->clks
[i
]);
1296 static int fimc_md_register_clk_provider(struct fimc_md
*fmd
)
1298 struct cam_clk_provider
*cp
= &fmd
->clk_provider
;
1299 struct device
*dev
= &fmd
->pdev
->dev
;
1302 for (i
= 0; i
< FIMC_MAX_CAMCLKS
; i
++) {
1303 struct cam_clk
*camclk
= &cp
->camclk
[i
];
1304 struct clk_init_data init
;
1307 ret
= of_property_read_string_index(dev
->of_node
,
1308 "clock-output-names", i
, &init
.name
);
1312 p_name
= __clk_get_name(fmd
->camclk
[i
].clock
);
1314 /* It's safe since clk_register() will duplicate the string. */
1315 init
.parent_names
= &p_name
;
1316 init
.num_parents
= 1;
1317 init
.ops
= &cam_clk_ops
;
1318 init
.flags
= CLK_SET_RATE_PARENT
;
1319 camclk
->hw
.init
= &init
;
1322 cp
->clks
[i
] = clk_register(NULL
, &camclk
->hw
);
1323 if (IS_ERR(cp
->clks
[i
])) {
1324 dev_err(dev
, "failed to register clock: %s (%ld)\n",
1325 init
.name
, PTR_ERR(cp
->clks
[i
]));
1326 ret
= PTR_ERR(cp
->clks
[i
]);
1332 if (cp
->num_clocks
== 0) {
1333 dev_warn(dev
, "clk provider not registered\n");
1337 cp
->clk_data
.clks
= cp
->clks
;
1338 cp
->clk_data
.clk_num
= cp
->num_clocks
;
1339 cp
->of_node
= dev
->of_node
;
1340 ret
= of_clk_add_provider(dev
->of_node
, of_clk_src_onecell_get
,
1345 fimc_md_unregister_clk_provider(fmd
);
1349 static int subdev_notifier_bound(struct v4l2_async_notifier
*notifier
,
1350 struct v4l2_subdev
*subdev
,
1351 struct v4l2_async_subdev
*asd
)
1353 struct fimc_md
*fmd
= notifier_to_fimc_md(notifier
);
1354 struct fimc_sensor_info
*si
= NULL
;
1357 /* Find platform data for this sensor subdev */
1358 for (i
= 0; i
< ARRAY_SIZE(fmd
->sensor
); i
++)
1359 if (fmd
->sensor
[i
].asd
.match
.of
.node
== subdev
->dev
->of_node
)
1360 si
= &fmd
->sensor
[i
];
1365 v4l2_set_subdev_hostdata(subdev
, &si
->pdata
);
1367 if (si
->pdata
.fimc_bus_type
== FIMC_BUS_TYPE_ISP_WRITEBACK
)
1368 subdev
->grp_id
= GRP_ID_FIMC_IS_SENSOR
;
1370 subdev
->grp_id
= GRP_ID_SENSOR
;
1372 si
->subdev
= subdev
;
1374 v4l2_info(&fmd
->v4l2_dev
, "Registered sensor subdevice: %s (%d)\n",
1375 subdev
->name
, fmd
->num_sensors
);
1382 static int subdev_notifier_complete(struct v4l2_async_notifier
*notifier
)
1384 struct fimc_md
*fmd
= notifier_to_fimc_md(notifier
);
1387 mutex_lock(&fmd
->media_dev
.graph_mutex
);
1389 ret
= fimc_md_create_links(fmd
);
1393 ret
= v4l2_device_register_subdev_nodes(&fmd
->v4l2_dev
);
1395 mutex_unlock(&fmd
->media_dev
.graph_mutex
);
1399 return media_device_register(&fmd
->media_dev
);
1402 static int fimc_md_probe(struct platform_device
*pdev
)
1404 struct device
*dev
= &pdev
->dev
;
1405 struct v4l2_device
*v4l2_dev
;
1406 struct fimc_md
*fmd
;
1409 fmd
= devm_kzalloc(dev
, sizeof(*fmd
), GFP_KERNEL
);
1413 spin_lock_init(&fmd
->slock
);
1414 INIT_LIST_HEAD(&fmd
->pipelines
);
1417 strlcpy(fmd
->media_dev
.model
, "SAMSUNG S5P FIMC",
1418 sizeof(fmd
->media_dev
.model
));
1419 fmd
->media_dev
.link_notify
= fimc_md_link_notify
;
1420 fmd
->media_dev
.dev
= dev
;
1422 v4l2_dev
= &fmd
->v4l2_dev
;
1423 v4l2_dev
->mdev
= &fmd
->media_dev
;
1424 v4l2_dev
->notify
= fimc_sensor_notify
;
1425 strlcpy(v4l2_dev
->name
, "s5p-fimc-md", sizeof(v4l2_dev
->name
));
1427 fmd
->use_isp
= fimc_md_is_isp_available(dev
->of_node
);
1428 fmd
->user_subdev_api
= true;
1430 media_device_init(&fmd
->media_dev
);
1432 ret
= v4l2_device_register(dev
, &fmd
->v4l2_dev
);
1434 v4l2_err(v4l2_dev
, "Failed to register v4l2_device: %d\n", ret
);
1438 ret
= fimc_md_get_clocks(fmd
);
1442 ret
= fimc_md_get_pinctrl(fmd
);
1444 if (ret
!= EPROBE_DEFER
)
1445 dev_err(dev
, "Failed to get pinctrl: %d\n", ret
);
1449 platform_set_drvdata(pdev
, fmd
);
1451 ret
= fimc_md_register_platform_entities(fmd
, dev
->of_node
);
1455 ret
= fimc_md_register_sensor_entities(fmd
);
1459 ret
= device_create_file(&pdev
->dev
, &dev_attr_subdev_conf_mode
);
1463 * FIMC platform devices need to be registered before the sclk_cam
1464 * clocks provider, as one of these devices needs to be activated
1465 * to enable the clock.
1467 ret
= fimc_md_register_clk_provider(fmd
);
1469 v4l2_err(v4l2_dev
, "clock provider registration failed\n");
1473 if (fmd
->num_sensors
> 0) {
1474 fmd
->subdev_notifier
.subdevs
= fmd
->async_subdevs
;
1475 fmd
->subdev_notifier
.num_subdevs
= fmd
->num_sensors
;
1476 fmd
->subdev_notifier
.bound
= subdev_notifier_bound
;
1477 fmd
->subdev_notifier
.complete
= subdev_notifier_complete
;
1478 fmd
->num_sensors
= 0;
1480 ret
= v4l2_async_notifier_register(&fmd
->v4l2_dev
,
1481 &fmd
->subdev_notifier
);
1489 fimc_md_unregister_clk_provider(fmd
);
1491 device_remove_file(&pdev
->dev
, &dev_attr_subdev_conf_mode
);
1493 fimc_md_put_clocks(fmd
);
1495 fimc_md_unregister_entities(fmd
);
1497 media_device_cleanup(&fmd
->media_dev
);
1498 v4l2_device_unregister(&fmd
->v4l2_dev
);
1502 static int fimc_md_remove(struct platform_device
*pdev
)
1504 struct fimc_md
*fmd
= platform_get_drvdata(pdev
);
1509 fimc_md_unregister_clk_provider(fmd
);
1510 v4l2_async_notifier_unregister(&fmd
->subdev_notifier
);
1512 v4l2_device_unregister(&fmd
->v4l2_dev
);
1513 device_remove_file(&pdev
->dev
, &dev_attr_subdev_conf_mode
);
1514 fimc_md_unregister_entities(fmd
);
1515 fimc_md_pipelines_free(fmd
);
1516 media_device_unregister(&fmd
->media_dev
);
1517 media_device_cleanup(&fmd
->media_dev
);
1518 fimc_md_put_clocks(fmd
);
1523 static const struct platform_device_id fimc_driver_ids
[] __always_unused
= {
1524 { .name
= "s5p-fimc-md" },
1527 MODULE_DEVICE_TABLE(platform
, fimc_driver_ids
);
1529 static const struct of_device_id fimc_md_of_match
[] = {
1530 { .compatible
= "samsung,fimc" },
1533 MODULE_DEVICE_TABLE(of
, fimc_md_of_match
);
1535 static struct platform_driver fimc_md_driver
= {
1536 .probe
= fimc_md_probe
,
1537 .remove
= fimc_md_remove
,
1539 .of_match_table
= of_match_ptr(fimc_md_of_match
),
1540 .name
= "s5p-fimc-md",
1544 static int __init
fimc_md_init(void)
1548 request_module("s5p-csis");
1549 ret
= fimc_register_driver();
1553 return platform_driver_register(&fimc_md_driver
);
1556 static void __exit
fimc_md_exit(void)
1558 platform_driver_unregister(&fimc_md_driver
);
1559 fimc_unregister_driver();
1562 module_init(fimc_md_init
);
1563 module_exit(fimc_md_exit
);
1565 MODULE_AUTHOR("Sylwester Nawrocki <s.nawrocki@samsung.com>");
1566 MODULE_DESCRIPTION("S5P FIMC camera host interface/video postprocessor driver");
1567 MODULE_LICENSE("GPL");
1568 MODULE_VERSION("2.0.1");