// SPDX-License-Identifier: GPL-2.0-or-later
|
/*
|
* S5P/EXYNOS4 SoC series camera host interface media device driver
|
*
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* Copyright (C) 2011 - 2013 Samsung Electronics Co., Ltd.
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* Author: Sylwester Nawrocki <s.nawrocki@samsung.com>
|
*/
|
|
#include <linux/bug.h>
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#include <linux/clk.h>
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#include <linux/clk-provider.h>
|
#include <linux/device.h>
|
#include <linux/errno.h>
|
#include <linux/i2c.h>
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#include <linux/kernel.h>
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#include <linux/list.h>
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#include <linux/module.h>
|
#include <linux/of.h>
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#include <linux/of_platform.h>
|
#include <linux/of_device.h>
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#include <linux/of_graph.h>
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#include <linux/pinctrl/consumer.h>
|
#include <linux/platform_device.h>
|
#include <linux/pm_runtime.h>
|
#include <linux/types.h>
|
#include <linux/slab.h>
|
#include <media/v4l2-async.h>
|
#include <media/v4l2-ctrls.h>
|
#include <media/v4l2-fwnode.h>
|
#include <media/media-device.h>
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#include <media/drv-intf/exynos-fimc.h>
|
|
#include "media-dev.h"
|
#include "fimc-core.h"
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#include "fimc-is.h"
|
#include "fimc-lite.h"
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#include "mipi-csis.h"
|
|
/* Set up image sensor subdev -> FIMC capture node notifications. */
|
static void __setup_sensor_notification(struct fimc_md *fmd,
|
struct v4l2_subdev *sensor,
|
struct v4l2_subdev *fimc_sd)
|
{
|
struct fimc_source_info *src_inf;
|
struct fimc_sensor_info *md_si;
|
unsigned long flags;
|
|
src_inf = v4l2_get_subdev_hostdata(sensor);
|
if (!src_inf || WARN_ON(fmd == NULL))
|
return;
|
|
md_si = source_to_sensor_info(src_inf);
|
spin_lock_irqsave(&fmd->slock, flags);
|
md_si->host = v4l2_get_subdevdata(fimc_sd);
|
spin_unlock_irqrestore(&fmd->slock, flags);
|
}
|
|
/**
|
* fimc_pipeline_prepare - update pipeline information with subdevice pointers
|
* @p: fimc pipeline
|
* @me: media entity terminating the pipeline
|
*
|
* Caller holds the graph mutex.
|
*/
|
static void fimc_pipeline_prepare(struct fimc_pipeline *p,
|
struct media_entity *me)
|
{
|
struct fimc_md *fmd = entity_to_fimc_mdev(me);
|
struct v4l2_subdev *sd;
|
struct v4l2_subdev *sensor = NULL;
|
int i;
|
|
for (i = 0; i < IDX_MAX; i++)
|
p->subdevs[i] = NULL;
|
|
while (1) {
|
struct media_pad *pad = NULL;
|
|
/* Find remote source pad */
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for (i = 0; i < me->num_pads; i++) {
|
struct media_pad *spad = &me->pads[i];
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if (!(spad->flags & MEDIA_PAD_FL_SINK))
|
continue;
|
pad = media_entity_remote_pad(spad);
|
if (pad)
|
break;
|
}
|
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if (!pad || !is_media_entity_v4l2_subdev(pad->entity))
|
break;
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sd = media_entity_to_v4l2_subdev(pad->entity);
|
|
switch (sd->grp_id) {
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case GRP_ID_SENSOR:
|
sensor = sd;
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fallthrough;
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case GRP_ID_FIMC_IS_SENSOR:
|
p->subdevs[IDX_SENSOR] = sd;
|
break;
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case GRP_ID_CSIS:
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p->subdevs[IDX_CSIS] = sd;
|
break;
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case GRP_ID_FLITE:
|
p->subdevs[IDX_FLITE] = sd;
|
break;
|
case GRP_ID_FIMC:
|
p->subdevs[IDX_FIMC] = sd;
|
break;
|
case GRP_ID_FIMC_IS:
|
p->subdevs[IDX_IS_ISP] = sd;
|
break;
|
default:
|
break;
|
}
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me = &sd->entity;
|
if (me->num_pads == 1)
|
break;
|
}
|
|
if (sensor && p->subdevs[IDX_FIMC])
|
__setup_sensor_notification(fmd, sensor, p->subdevs[IDX_FIMC]);
|
}
|
|
/**
|
* __subdev_set_power - change power state of a single subdev
|
* @sd: subdevice to change power state for
|
* @on: 1 to enable power or 0 to disable
|
*
|
* Return result of s_power subdev operation or -ENXIO if sd argument
|
* is NULL. Return 0 if the subdevice does not implement s_power.
|
*/
|
static int __subdev_set_power(struct v4l2_subdev *sd, int on)
|
{
|
int *use_count;
|
int ret;
|
|
if (sd == NULL)
|
return -ENXIO;
|
|
use_count = &sd->entity.use_count;
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if (on && (*use_count)++ > 0)
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return 0;
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else if (!on && (*use_count == 0 || --(*use_count) > 0))
|
return 0;
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ret = v4l2_subdev_call(sd, core, s_power, on);
|
|
return ret != -ENOIOCTLCMD ? ret : 0;
|
}
|
|
/**
|
* fimc_pipeline_s_power - change power state of all pipeline subdevs
|
* @p: fimc device terminating the pipeline
|
* @on: true to power on, false to power off
|
*
|
* Needs to be called with the graph mutex held.
|
*/
|
static int fimc_pipeline_s_power(struct fimc_pipeline *p, bool on)
|
{
|
static const u8 seq[2][IDX_MAX - 1] = {
|
{ IDX_IS_ISP, IDX_SENSOR, IDX_CSIS, IDX_FLITE },
|
{ IDX_CSIS, IDX_FLITE, IDX_SENSOR, IDX_IS_ISP },
|
};
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int i, ret = 0;
|
|
if (p->subdevs[IDX_SENSOR] == NULL)
|
return -ENXIO;
|
|
for (i = 0; i < IDX_MAX - 1; i++) {
|
unsigned int idx = seq[on][i];
|
|
ret = __subdev_set_power(p->subdevs[idx], on);
|
|
|
if (ret < 0 && ret != -ENXIO)
|
goto error;
|
}
|
return 0;
|
error:
|
for (; i >= 0; i--) {
|
unsigned int idx = seq[on][i];
|
__subdev_set_power(p->subdevs[idx], !on);
|
}
|
return ret;
|
}
|
|
/**
|
* __fimc_pipeline_enable - enable power of all pipeline subdevs
|
* and the sensor clock
|
* @ep: video pipeline structure
|
* @fmd: fimc media device
|
*
|
* Called with the graph mutex held.
|
*/
|
static int __fimc_pipeline_enable(struct exynos_media_pipeline *ep,
|
struct fimc_md *fmd)
|
{
|
struct fimc_pipeline *p = to_fimc_pipeline(ep);
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int ret;
|
|
/* Enable PXLASYNC clock if this pipeline includes FIMC-IS */
|
if (!IS_ERR(fmd->wbclk[CLK_IDX_WB_B]) && p->subdevs[IDX_IS_ISP]) {
|
ret = clk_prepare_enable(fmd->wbclk[CLK_IDX_WB_B]);
|
if (ret < 0)
|
return ret;
|
}
|
|
ret = fimc_pipeline_s_power(p, 1);
|
if (!ret)
|
return 0;
|
|
if (!IS_ERR(fmd->wbclk[CLK_IDX_WB_B]) && p->subdevs[IDX_IS_ISP])
|
clk_disable_unprepare(fmd->wbclk[CLK_IDX_WB_B]);
|
|
return ret;
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}
|
|
/**
|
* __fimc_pipeline_open - update the pipeline information, enable power
|
* of all pipeline subdevs and the sensor clock
|
* @ep: fimc device terminating the pipeline
|
* @me: media entity to start graph walk with
|
* @prepare: true to walk the current pipeline and acquire all subdevs
|
*
|
* Called with the graph mutex held.
|
*/
|
static int __fimc_pipeline_open(struct exynos_media_pipeline *ep,
|
struct media_entity *me, bool prepare)
|
{
|
struct fimc_md *fmd = entity_to_fimc_mdev(me);
|
struct fimc_pipeline *p = to_fimc_pipeline(ep);
|
struct v4l2_subdev *sd;
|
|
if (WARN_ON(p == NULL || me == NULL))
|
return -EINVAL;
|
|
if (prepare)
|
fimc_pipeline_prepare(p, me);
|
|
sd = p->subdevs[IDX_SENSOR];
|
if (sd == NULL) {
|
pr_warn("%s(): No sensor subdev\n", __func__);
|
/*
|
* Pipeline open cannot fail so as to make it possible
|
* for the user space to configure the pipeline.
|
*/
|
return 0;
|
}
|
|
return __fimc_pipeline_enable(ep, fmd);
|
}
|
|
/**
|
* __fimc_pipeline_close - disable the sensor clock and pipeline power
|
* @ep: fimc device terminating the pipeline
|
*
|
* Disable power of all subdevs and turn the external sensor clock off.
|
*/
|
static int __fimc_pipeline_close(struct exynos_media_pipeline *ep)
|
{
|
struct fimc_pipeline *p = to_fimc_pipeline(ep);
|
struct v4l2_subdev *sd = p ? p->subdevs[IDX_SENSOR] : NULL;
|
struct fimc_md *fmd;
|
int ret;
|
|
if (sd == NULL) {
|
pr_warn("%s(): No sensor subdev\n", __func__);
|
return 0;
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}
|
|
ret = fimc_pipeline_s_power(p, 0);
|
|
fmd = entity_to_fimc_mdev(&sd->entity);
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|
/* Disable PXLASYNC clock if this pipeline includes FIMC-IS */
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if (!IS_ERR(fmd->wbclk[CLK_IDX_WB_B]) && p->subdevs[IDX_IS_ISP])
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clk_disable_unprepare(fmd->wbclk[CLK_IDX_WB_B]);
|
|
return ret == -ENXIO ? 0 : ret;
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}
|
|
/**
|
* __fimc_pipeline_s_stream - call s_stream() on pipeline subdevs
|
* @ep: video pipeline structure
|
* @on: passed as the s_stream() callback argument
|
*/
|
static int __fimc_pipeline_s_stream(struct exynos_media_pipeline *ep, bool on)
|
{
|
static const u8 seq[2][IDX_MAX] = {
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{ IDX_FIMC, IDX_SENSOR, IDX_IS_ISP, IDX_CSIS, IDX_FLITE },
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{ IDX_CSIS, IDX_FLITE, IDX_FIMC, IDX_SENSOR, IDX_IS_ISP },
|
};
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struct fimc_pipeline *p = to_fimc_pipeline(ep);
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enum fimc_subdev_index sd_id;
|
int i, ret = 0;
|
|
if (p->subdevs[IDX_SENSOR] == NULL) {
|
struct fimc_md *fmd;
|
struct v4l2_subdev *sd = p->subdevs[IDX_CSIS];
|
|
if (!sd)
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sd = p->subdevs[IDX_FIMC];
|
|
if (!sd) {
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/*
|
* If neither CSIS nor FIMC was set up,
|
* it's impossible to have any sensors
|
*/
|
return -ENODEV;
|
}
|
|
fmd = entity_to_fimc_mdev(&sd->entity);
|
|
if (!fmd->user_subdev_api) {
|
/*
|
* Sensor must be already discovered if we
|
* aren't in the user_subdev_api mode
|
*/
|
return -ENODEV;
|
}
|
|
/* Get pipeline sink entity */
|
if (p->subdevs[IDX_FIMC])
|
sd_id = IDX_FIMC;
|
else if (p->subdevs[IDX_IS_ISP])
|
sd_id = IDX_IS_ISP;
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else if (p->subdevs[IDX_FLITE])
|
sd_id = IDX_FLITE;
|
else
|
return -ENODEV;
|
|
/*
|
* Sensor could have been linked between open and STREAMON -
|
* check if this is the case.
|
*/
|
fimc_pipeline_prepare(p, &p->subdevs[sd_id]->entity);
|
|
if (p->subdevs[IDX_SENSOR] == NULL)
|
return -ENODEV;
|
|
ret = __fimc_pipeline_enable(ep, fmd);
|
if (ret < 0)
|
return ret;
|
|
}
|
|
for (i = 0; i < IDX_MAX; i++) {
|
unsigned int idx = seq[on][i];
|
|
ret = v4l2_subdev_call(p->subdevs[idx], video, s_stream, on);
|
|
if (ret < 0 && ret != -ENOIOCTLCMD && ret != -ENODEV)
|
goto error;
|
}
|
|
return 0;
|
error:
|
fimc_pipeline_s_power(p, !on);
|
for (; i >= 0; i--) {
|
unsigned int idx = seq[on][i];
|
v4l2_subdev_call(p->subdevs[idx], video, s_stream, !on);
|
}
|
return ret;
|
}
|
|
/* Media pipeline operations for the FIMC/FIMC-LITE video device driver */
|
static const struct exynos_media_pipeline_ops fimc_pipeline_ops = {
|
.open = __fimc_pipeline_open,
|
.close = __fimc_pipeline_close,
|
.set_stream = __fimc_pipeline_s_stream,
|
};
|
|
static struct exynos_media_pipeline *fimc_md_pipeline_create(
|
struct fimc_md *fmd)
|
{
|
struct fimc_pipeline *p;
|
|
p = kzalloc(sizeof(*p), GFP_KERNEL);
|
if (!p)
|
return NULL;
|
|
list_add_tail(&p->list, &fmd->pipelines);
|
|
p->ep.ops = &fimc_pipeline_ops;
|
return &p->ep;
|
}
|
|
static void fimc_md_pipelines_free(struct fimc_md *fmd)
|
{
|
while (!list_empty(&fmd->pipelines)) {
|
struct fimc_pipeline *p;
|
|
p = list_entry(fmd->pipelines.next, typeof(*p), list);
|
list_del(&p->list);
|
kfree(p);
|
}
|
}
|
|
static int fimc_md_parse_one_endpoint(struct fimc_md *fmd,
|
struct device_node *ep)
|
{
|
int index = fmd->num_sensors;
|
struct fimc_source_info *pd = &fmd->sensor[index].pdata;
|
struct device_node *rem, *np;
|
struct v4l2_fwnode_endpoint endpoint = { .bus_type = 0 };
|
int ret;
|
|
ret = v4l2_fwnode_endpoint_parse(of_fwnode_handle(ep), &endpoint);
|
if (ret) {
|
of_node_put(ep);
|
return ret;
|
}
|
|
if (WARN_ON(endpoint.base.port == 0) || index >= FIMC_MAX_SENSORS) {
|
of_node_put(ep);
|
return -EINVAL;
|
}
|
|
pd->mux_id = (endpoint.base.port - 1) & 0x1;
|
|
rem = of_graph_get_remote_port_parent(ep);
|
of_node_put(ep);
|
if (rem == NULL) {
|
v4l2_info(&fmd->v4l2_dev, "Remote device at %pOF not found\n",
|
ep);
|
return 0;
|
}
|
|
if (fimc_input_is_parallel(endpoint.base.port)) {
|
if (endpoint.bus_type == V4L2_MBUS_PARALLEL)
|
pd->sensor_bus_type = FIMC_BUS_TYPE_ITU_601;
|
else
|
pd->sensor_bus_type = FIMC_BUS_TYPE_ITU_656;
|
pd->flags = endpoint.bus.parallel.flags;
|
} else if (fimc_input_is_mipi_csi(endpoint.base.port)) {
|
/*
|
* MIPI CSI-2: only input mux selection and
|
* the sensor's clock frequency is needed.
|
*/
|
pd->sensor_bus_type = FIMC_BUS_TYPE_MIPI_CSI2;
|
} else {
|
v4l2_err(&fmd->v4l2_dev, "Wrong port id (%u) at node %pOF\n",
|
endpoint.base.port, rem);
|
}
|
/*
|
* For FIMC-IS handled sensors, that are placed under i2c-isp device
|
* node, FIMC is connected to the FIMC-IS through its ISP Writeback
|
* input. Sensors are attached to the FIMC-LITE hostdata interface
|
* directly or through MIPI-CSIS, depending on the external media bus
|
* used. This needs to be handled in a more reliable way, not by just
|
* checking parent's node name.
|
*/
|
np = of_get_parent(rem);
|
|
if (of_node_name_eq(np, "i2c-isp"))
|
pd->fimc_bus_type = FIMC_BUS_TYPE_ISP_WRITEBACK;
|
else
|
pd->fimc_bus_type = pd->sensor_bus_type;
|
of_node_put(np);
|
|
if (WARN_ON(index >= ARRAY_SIZE(fmd->sensor))) {
|
of_node_put(rem);
|
return -EINVAL;
|
}
|
|
fmd->sensor[index].asd.match_type = V4L2_ASYNC_MATCH_FWNODE;
|
fmd->sensor[index].asd.match.fwnode = of_fwnode_handle(rem);
|
|
ret = v4l2_async_notifier_add_subdev(&fmd->subdev_notifier,
|
&fmd->sensor[index].asd);
|
if (ret) {
|
of_node_put(rem);
|
return ret;
|
}
|
|
fmd->num_sensors++;
|
|
return 0;
|
}
|
|
/* Parse port node and register as a sub-device any sensor specified there. */
|
static int fimc_md_parse_port_node(struct fimc_md *fmd,
|
struct device_node *port)
|
{
|
struct device_node *ep;
|
int ret;
|
|
for_each_child_of_node(port, ep) {
|
ret = fimc_md_parse_one_endpoint(fmd, ep);
|
if (ret < 0)
|
return ret;
|
}
|
|
return 0;
|
}
|
|
/* Register all SoC external sub-devices */
|
static int fimc_md_register_sensor_entities(struct fimc_md *fmd)
|
{
|
struct device_node *parent = fmd->pdev->dev.of_node;
|
struct device_node *ports = NULL;
|
struct device_node *node;
|
int ret;
|
|
/*
|
* Runtime resume one of the FIMC entities to make sure
|
* the sclk_cam clocks are not globally disabled.
|
*/
|
if (!fmd->pmf)
|
return -ENXIO;
|
|
ret = pm_runtime_resume_and_get(fmd->pmf);
|
if (ret < 0)
|
return ret;
|
|
fmd->num_sensors = 0;
|
|
/* Attach sensors linked to MIPI CSI-2 receivers */
|
for_each_available_child_of_node(parent, node) {
|
struct device_node *port;
|
|
if (!of_node_name_eq(node, "csis"))
|
continue;
|
/* The csis node can have only port subnode. */
|
port = of_get_next_child(node, NULL);
|
if (!port)
|
continue;
|
|
ret = fimc_md_parse_port_node(fmd, port);
|
of_node_put(port);
|
if (ret < 0) {
|
of_node_put(node);
|
goto cleanup;
|
}
|
}
|
|
/* Attach sensors listed in the parallel-ports node */
|
ports = of_get_child_by_name(parent, "parallel-ports");
|
if (!ports)
|
goto rpm_put;
|
|
for_each_child_of_node(ports, node) {
|
ret = fimc_md_parse_port_node(fmd, node);
|
if (ret < 0) {
|
of_node_put(node);
|
goto cleanup;
|
}
|
}
|
of_node_put(ports);
|
|
rpm_put:
|
pm_runtime_put(fmd->pmf);
|
return 0;
|
|
cleanup:
|
of_node_put(ports);
|
v4l2_async_notifier_cleanup(&fmd->subdev_notifier);
|
pm_runtime_put(fmd->pmf);
|
return ret;
|
}
|
|
static int __of_get_csis_id(struct device_node *np)
|
{
|
u32 reg = 0;
|
|
np = of_get_child_by_name(np, "port");
|
if (!np)
|
return -EINVAL;
|
of_property_read_u32(np, "reg", ®);
|
of_node_put(np);
|
return reg - FIMC_INPUT_MIPI_CSI2_0;
|
}
|
|
/*
|
* MIPI-CSIS, FIMC and FIMC-LITE platform devices registration.
|
*/
|
static int register_fimc_lite_entity(struct fimc_md *fmd,
|
struct fimc_lite *fimc_lite)
|
{
|
struct v4l2_subdev *sd;
|
struct exynos_media_pipeline *ep;
|
int ret;
|
|
if (WARN_ON(fimc_lite->index >= FIMC_LITE_MAX_DEVS ||
|
fmd->fimc_lite[fimc_lite->index]))
|
return -EBUSY;
|
|
sd = &fimc_lite->subdev;
|
sd->grp_id = GRP_ID_FLITE;
|
|
ep = fimc_md_pipeline_create(fmd);
|
if (!ep)
|
return -ENOMEM;
|
|
v4l2_set_subdev_hostdata(sd, ep);
|
|
ret = v4l2_device_register_subdev(&fmd->v4l2_dev, sd);
|
if (!ret)
|
fmd->fimc_lite[fimc_lite->index] = fimc_lite;
|
else
|
v4l2_err(&fmd->v4l2_dev, "Failed to register FIMC.LITE%d\n",
|
fimc_lite->index);
|
return ret;
|
}
|
|
static int register_fimc_entity(struct fimc_md *fmd, struct fimc_dev *fimc)
|
{
|
struct v4l2_subdev *sd;
|
struct exynos_media_pipeline *ep;
|
int ret;
|
|
if (WARN_ON(fimc->id >= FIMC_MAX_DEVS || fmd->fimc[fimc->id]))
|
return -EBUSY;
|
|
sd = &fimc->vid_cap.subdev;
|
sd->grp_id = GRP_ID_FIMC;
|
|
ep = fimc_md_pipeline_create(fmd);
|
if (!ep)
|
return -ENOMEM;
|
|
v4l2_set_subdev_hostdata(sd, ep);
|
|
ret = v4l2_device_register_subdev(&fmd->v4l2_dev, sd);
|
if (!ret) {
|
if (!fmd->pmf && fimc->pdev)
|
fmd->pmf = &fimc->pdev->dev;
|
fmd->fimc[fimc->id] = fimc;
|
fimc->vid_cap.user_subdev_api = fmd->user_subdev_api;
|
} else {
|
v4l2_err(&fmd->v4l2_dev, "Failed to register FIMC.%d (%d)\n",
|
fimc->id, ret);
|
}
|
return ret;
|
}
|
|
static int register_csis_entity(struct fimc_md *fmd,
|
struct platform_device *pdev,
|
struct v4l2_subdev *sd)
|
{
|
struct device_node *node = pdev->dev.of_node;
|
int id, ret;
|
|
id = node ? __of_get_csis_id(node) : max(0, pdev->id);
|
|
if (WARN_ON(id < 0 || id >= CSIS_MAX_ENTITIES))
|
return -ENOENT;
|
|
if (WARN_ON(fmd->csis[id].sd))
|
return -EBUSY;
|
|
sd->grp_id = GRP_ID_CSIS;
|
ret = v4l2_device_register_subdev(&fmd->v4l2_dev, sd);
|
if (!ret)
|
fmd->csis[id].sd = sd;
|
else
|
v4l2_err(&fmd->v4l2_dev,
|
"Failed to register MIPI-CSIS.%d (%d)\n", id, ret);
|
return ret;
|
}
|
|
static int register_fimc_is_entity(struct fimc_md *fmd, struct fimc_is *is)
|
{
|
struct v4l2_subdev *sd = &is->isp.subdev;
|
struct exynos_media_pipeline *ep;
|
int ret;
|
|
/* Allocate pipeline object for the ISP capture video node. */
|
ep = fimc_md_pipeline_create(fmd);
|
if (!ep)
|
return -ENOMEM;
|
|
v4l2_set_subdev_hostdata(sd, ep);
|
|
ret = v4l2_device_register_subdev(&fmd->v4l2_dev, sd);
|
if (ret) {
|
v4l2_err(&fmd->v4l2_dev,
|
"Failed to register FIMC-ISP (%d)\n", ret);
|
return ret;
|
}
|
|
fmd->fimc_is = is;
|
return 0;
|
}
|
|
static int fimc_md_register_platform_entity(struct fimc_md *fmd,
|
struct platform_device *pdev,
|
int plat_entity)
|
{
|
struct device *dev = &pdev->dev;
|
int ret = -EPROBE_DEFER;
|
void *drvdata;
|
|
/* Lock to ensure dev->driver won't change. */
|
device_lock(dev);
|
|
if (!dev->driver || !try_module_get(dev->driver->owner))
|
goto dev_unlock;
|
|
drvdata = dev_get_drvdata(dev);
|
/* Some subdev didn't probe successfully id drvdata is NULL */
|
if (drvdata) {
|
switch (plat_entity) {
|
case IDX_FIMC:
|
ret = register_fimc_entity(fmd, drvdata);
|
break;
|
case IDX_FLITE:
|
ret = register_fimc_lite_entity(fmd, drvdata);
|
break;
|
case IDX_CSIS:
|
ret = register_csis_entity(fmd, pdev, drvdata);
|
break;
|
case IDX_IS_ISP:
|
ret = register_fimc_is_entity(fmd, drvdata);
|
break;
|
default:
|
ret = -ENODEV;
|
}
|
}
|
|
module_put(dev->driver->owner);
|
dev_unlock:
|
device_unlock(dev);
|
if (ret == -EPROBE_DEFER)
|
dev_info(&fmd->pdev->dev, "deferring %s device registration\n",
|
dev_name(dev));
|
else if (ret < 0)
|
dev_err(&fmd->pdev->dev, "%s device registration failed (%d)\n",
|
dev_name(dev), ret);
|
return ret;
|
}
|
|
/* Register FIMC, FIMC-LITE and CSIS media entities */
|
static int fimc_md_register_platform_entities(struct fimc_md *fmd,
|
struct device_node *parent)
|
{
|
struct device_node *node;
|
int ret = 0;
|
|
for_each_available_child_of_node(parent, node) {
|
struct platform_device *pdev;
|
int plat_entity = -1;
|
|
pdev = of_find_device_by_node(node);
|
if (!pdev)
|
continue;
|
|
/* If driver of any entity isn't ready try all again later. */
|
if (of_node_name_eq(node, CSIS_OF_NODE_NAME))
|
plat_entity = IDX_CSIS;
|
else if (of_node_name_eq(node, FIMC_IS_OF_NODE_NAME))
|
plat_entity = IDX_IS_ISP;
|
else if (of_node_name_eq(node, FIMC_LITE_OF_NODE_NAME))
|
plat_entity = IDX_FLITE;
|
else if (of_node_name_eq(node, FIMC_OF_NODE_NAME) &&
|
!of_property_read_bool(node, "samsung,lcd-wb"))
|
plat_entity = IDX_FIMC;
|
|
if (plat_entity >= 0)
|
ret = fimc_md_register_platform_entity(fmd, pdev,
|
plat_entity);
|
put_device(&pdev->dev);
|
if (ret < 0) {
|
of_node_put(node);
|
break;
|
}
|
}
|
|
return ret;
|
}
|
|
static void fimc_md_unregister_entities(struct fimc_md *fmd)
|
{
|
int i;
|
|
for (i = 0; i < FIMC_MAX_DEVS; i++) {
|
struct fimc_dev *dev = fmd->fimc[i];
|
if (dev == NULL)
|
continue;
|
v4l2_device_unregister_subdev(&dev->vid_cap.subdev);
|
dev->vid_cap.ve.pipe = NULL;
|
fmd->fimc[i] = NULL;
|
}
|
for (i = 0; i < FIMC_LITE_MAX_DEVS; i++) {
|
struct fimc_lite *dev = fmd->fimc_lite[i];
|
if (dev == NULL)
|
continue;
|
v4l2_device_unregister_subdev(&dev->subdev);
|
dev->ve.pipe = NULL;
|
fmd->fimc_lite[i] = NULL;
|
}
|
for (i = 0; i < CSIS_MAX_ENTITIES; i++) {
|
if (fmd->csis[i].sd == NULL)
|
continue;
|
v4l2_device_unregister_subdev(fmd->csis[i].sd);
|
fmd->csis[i].sd = NULL;
|
}
|
|
if (fmd->fimc_is)
|
v4l2_device_unregister_subdev(&fmd->fimc_is->isp.subdev);
|
|
v4l2_info(&fmd->v4l2_dev, "Unregistered all entities\n");
|
}
|
|
/**
|
* __fimc_md_create_fimc_links - create links to all FIMC entities
|
* @fmd: fimc media device
|
* @source: the source entity to create links to all fimc entities from
|
* @sensor: sensor subdev linked to FIMC[fimc_id] entity, may be null
|
* @pad: the source entity pad index
|
* @link_mask: bitmask of the fimc devices for which link should be enabled
|
*/
|
static int __fimc_md_create_fimc_sink_links(struct fimc_md *fmd,
|
struct media_entity *source,
|
struct v4l2_subdev *sensor,
|
int pad, int link_mask)
|
{
|
struct fimc_source_info *si = NULL;
|
struct media_entity *sink;
|
unsigned int flags = 0;
|
int i, ret = 0;
|
|
if (sensor) {
|
si = v4l2_get_subdev_hostdata(sensor);
|
/* Skip direct FIMC links in the logical FIMC-IS sensor path */
|
if (si && si->fimc_bus_type == FIMC_BUS_TYPE_ISP_WRITEBACK)
|
ret = 1;
|
}
|
|
for (i = 0; !ret && i < FIMC_MAX_DEVS; i++) {
|
if (!fmd->fimc[i])
|
continue;
|
/*
|
* Some FIMC variants are not fitted with camera capture
|
* interface. Skip creating a link from sensor for those.
|
*/
|
if (!fmd->fimc[i]->variant->has_cam_if)
|
continue;
|
|
flags = ((1 << i) & link_mask) ? MEDIA_LNK_FL_ENABLED : 0;
|
|
sink = &fmd->fimc[i]->vid_cap.subdev.entity;
|
ret = media_create_pad_link(source, pad, sink,
|
FIMC_SD_PAD_SINK_CAM, flags);
|
if (ret)
|
return ret;
|
|
/* Notify FIMC capture subdev entity */
|
ret = media_entity_call(sink, link_setup, &sink->pads[0],
|
&source->pads[pad], flags);
|
if (ret)
|
break;
|
|
v4l2_info(&fmd->v4l2_dev, "created link [%s] %c> [%s]\n",
|
source->name, flags ? '=' : '-', sink->name);
|
}
|
|
for (i = 0; i < FIMC_LITE_MAX_DEVS; i++) {
|
if (!fmd->fimc_lite[i])
|
continue;
|
|
sink = &fmd->fimc_lite[i]->subdev.entity;
|
ret = media_create_pad_link(source, pad, sink,
|
FLITE_SD_PAD_SINK, 0);
|
if (ret)
|
return ret;
|
|
/* Notify FIMC-LITE subdev entity */
|
ret = media_entity_call(sink, link_setup, &sink->pads[0],
|
&source->pads[pad], 0);
|
if (ret)
|
break;
|
|
v4l2_info(&fmd->v4l2_dev, "created link [%s] -> [%s]\n",
|
source->name, sink->name);
|
}
|
return 0;
|
}
|
|
/* Create links from FIMC-LITE source pads to other entities */
|
static int __fimc_md_create_flite_source_links(struct fimc_md *fmd)
|
{
|
struct media_entity *source, *sink;
|
int i, ret = 0;
|
|
for (i = 0; i < FIMC_LITE_MAX_DEVS; i++) {
|
struct fimc_lite *fimc = fmd->fimc_lite[i];
|
|
if (fimc == NULL)
|
continue;
|
|
source = &fimc->subdev.entity;
|
sink = &fimc->ve.vdev.entity;
|
/* FIMC-LITE's subdev and video node */
|
ret = media_create_pad_link(source, FLITE_SD_PAD_SOURCE_DMA,
|
sink, 0, 0);
|
if (ret)
|
break;
|
/* Link from FIMC-LITE to IS-ISP subdev */
|
sink = &fmd->fimc_is->isp.subdev.entity;
|
ret = media_create_pad_link(source, FLITE_SD_PAD_SOURCE_ISP,
|
sink, 0, 0);
|
if (ret)
|
break;
|
}
|
|
return ret;
|
}
|
|
/* Create FIMC-IS links */
|
static int __fimc_md_create_fimc_is_links(struct fimc_md *fmd)
|
{
|
struct fimc_isp *isp = &fmd->fimc_is->isp;
|
struct media_entity *source, *sink;
|
int i, ret;
|
|
source = &isp->subdev.entity;
|
|
for (i = 0; i < FIMC_MAX_DEVS; i++) {
|
if (fmd->fimc[i] == NULL)
|
continue;
|
|
/* Link from FIMC-IS-ISP subdev to FIMC */
|
sink = &fmd->fimc[i]->vid_cap.subdev.entity;
|
ret = media_create_pad_link(source, FIMC_ISP_SD_PAD_SRC_FIFO,
|
sink, FIMC_SD_PAD_SINK_FIFO, 0);
|
if (ret)
|
return ret;
|
}
|
|
/* Link from FIMC-IS-ISP subdev to fimc-is-isp.capture video node */
|
sink = &isp->video_capture.ve.vdev.entity;
|
|
/* Skip this link if the fimc-is-isp video node driver isn't built-in */
|
if (sink->num_pads == 0)
|
return 0;
|
|
return media_create_pad_link(source, FIMC_ISP_SD_PAD_SRC_DMA,
|
sink, 0, 0);
|
}
|
|
/**
|
* fimc_md_create_links - create default links between registered entities
|
* @fmd: fimc media device
|
*
|
* Parallel interface sensor entities are connected directly to FIMC capture
|
* entities. The sensors using MIPI CSIS bus are connected through immutable
|
* link with CSI receiver entity specified by mux_id. Any registered CSIS
|
* entity has a link to each registered FIMC capture entity. Enabled links
|
* are created by default between each subsequent registered sensor and
|
* subsequent FIMC capture entity. The number of default active links is
|
* determined by the number of available sensors or FIMC entities,
|
* whichever is less.
|
*/
|
static int fimc_md_create_links(struct fimc_md *fmd)
|
{
|
struct v4l2_subdev *csi_sensors[CSIS_MAX_ENTITIES] = { NULL };
|
struct v4l2_subdev *sensor, *csis;
|
struct fimc_source_info *pdata;
|
struct media_entity *source, *sink;
|
int i, pad, fimc_id = 0, ret = 0;
|
u32 flags, link_mask = 0;
|
|
for (i = 0; i < fmd->num_sensors; i++) {
|
if (fmd->sensor[i].subdev == NULL)
|
continue;
|
|
sensor = fmd->sensor[i].subdev;
|
pdata = v4l2_get_subdev_hostdata(sensor);
|
if (!pdata)
|
continue;
|
|
source = NULL;
|
|
switch (pdata->sensor_bus_type) {
|
case FIMC_BUS_TYPE_MIPI_CSI2:
|
if (WARN(pdata->mux_id >= CSIS_MAX_ENTITIES,
|
"Wrong CSI channel id: %d\n", pdata->mux_id))
|
return -EINVAL;
|
|
csis = fmd->csis[pdata->mux_id].sd;
|
if (WARN(csis == NULL,
|
"MIPI-CSI interface specified but s5p-csis module is not loaded!\n"))
|
return -EINVAL;
|
|
pad = sensor->entity.num_pads - 1;
|
ret = media_create_pad_link(&sensor->entity, pad,
|
&csis->entity, CSIS_PAD_SINK,
|
MEDIA_LNK_FL_IMMUTABLE |
|
MEDIA_LNK_FL_ENABLED);
|
if (ret)
|
return ret;
|
|
v4l2_info(&fmd->v4l2_dev, "created link [%s] => [%s]\n",
|
sensor->entity.name, csis->entity.name);
|
|
source = NULL;
|
csi_sensors[pdata->mux_id] = sensor;
|
break;
|
|
case FIMC_BUS_TYPE_ITU_601...FIMC_BUS_TYPE_ITU_656:
|
source = &sensor->entity;
|
pad = 0;
|
break;
|
|
default:
|
v4l2_err(&fmd->v4l2_dev, "Wrong bus_type: %x\n",
|
pdata->sensor_bus_type);
|
return -EINVAL;
|
}
|
if (source == NULL)
|
continue;
|
|
link_mask = 1 << fimc_id++;
|
ret = __fimc_md_create_fimc_sink_links(fmd, source, sensor,
|
pad, link_mask);
|
}
|
|
for (i = 0; i < CSIS_MAX_ENTITIES; i++) {
|
if (fmd->csis[i].sd == NULL)
|
continue;
|
|
source = &fmd->csis[i].sd->entity;
|
pad = CSIS_PAD_SOURCE;
|
sensor = csi_sensors[i];
|
|
link_mask = 1 << fimc_id++;
|
ret = __fimc_md_create_fimc_sink_links(fmd, source, sensor,
|
pad, link_mask);
|
}
|
|
/* Create immutable links between each FIMC's subdev and video node */
|
flags = MEDIA_LNK_FL_IMMUTABLE | MEDIA_LNK_FL_ENABLED;
|
for (i = 0; i < FIMC_MAX_DEVS; i++) {
|
if (!fmd->fimc[i])
|
continue;
|
|
source = &fmd->fimc[i]->vid_cap.subdev.entity;
|
sink = &fmd->fimc[i]->vid_cap.ve.vdev.entity;
|
|
ret = media_create_pad_link(source, FIMC_SD_PAD_SOURCE,
|
sink, 0, flags);
|
if (ret)
|
break;
|
}
|
|
ret = __fimc_md_create_flite_source_links(fmd);
|
if (ret < 0)
|
return ret;
|
|
if (fmd->use_isp)
|
ret = __fimc_md_create_fimc_is_links(fmd);
|
|
return ret;
|
}
|
|
/*
|
* The peripheral sensor and CAM_BLK (PIXELASYNCMx) clocks management.
|
*/
|
static void fimc_md_put_clocks(struct fimc_md *fmd)
|
{
|
int i = FIMC_MAX_CAMCLKS;
|
|
while (--i >= 0) {
|
if (IS_ERR(fmd->camclk[i].clock))
|
continue;
|
clk_put(fmd->camclk[i].clock);
|
fmd->camclk[i].clock = ERR_PTR(-EINVAL);
|
}
|
|
/* Writeback (PIXELASYNCMx) clocks */
|
for (i = 0; i < FIMC_MAX_WBCLKS; i++) {
|
if (IS_ERR(fmd->wbclk[i]))
|
continue;
|
clk_put(fmd->wbclk[i]);
|
fmd->wbclk[i] = ERR_PTR(-EINVAL);
|
}
|
}
|
|
static int fimc_md_get_clocks(struct fimc_md *fmd)
|
{
|
struct device *dev = &fmd->pdev->dev;
|
char clk_name[32];
|
struct clk *clock;
|
int i, ret = 0;
|
|
for (i = 0; i < FIMC_MAX_CAMCLKS; i++)
|
fmd->camclk[i].clock = ERR_PTR(-EINVAL);
|
|
for (i = 0; i < FIMC_MAX_CAMCLKS; i++) {
|
snprintf(clk_name, sizeof(clk_name), "sclk_cam%u", i);
|
clock = clk_get(dev, clk_name);
|
|
if (IS_ERR(clock)) {
|
dev_err(dev, "Failed to get clock: %s\n", clk_name);
|
ret = PTR_ERR(clock);
|
break;
|
}
|
fmd->camclk[i].clock = clock;
|
}
|
if (ret)
|
fimc_md_put_clocks(fmd);
|
|
if (!fmd->use_isp)
|
return 0;
|
/*
|
* For now get only PIXELASYNCM1 clock (Writeback B/ISP),
|
* leave PIXELASYNCM0 out for the LCD Writeback driver.
|
*/
|
fmd->wbclk[CLK_IDX_WB_A] = ERR_PTR(-EINVAL);
|
|
for (i = CLK_IDX_WB_B; i < FIMC_MAX_WBCLKS; i++) {
|
snprintf(clk_name, sizeof(clk_name), "pxl_async%u", i);
|
clock = clk_get(dev, clk_name);
|
if (IS_ERR(clock)) {
|
v4l2_err(&fmd->v4l2_dev, "Failed to get clock: %s\n",
|
clk_name);
|
ret = PTR_ERR(clock);
|
break;
|
}
|
fmd->wbclk[i] = clock;
|
}
|
if (ret)
|
fimc_md_put_clocks(fmd);
|
|
return ret;
|
}
|
|
static int __fimc_md_modify_pipeline(struct media_entity *entity, bool enable)
|
{
|
struct exynos_video_entity *ve;
|
struct fimc_pipeline *p;
|
struct video_device *vdev;
|
int ret;
|
|
vdev = media_entity_to_video_device(entity);
|
if (vdev->entity.use_count == 0)
|
return 0;
|
|
ve = vdev_to_exynos_video_entity(vdev);
|
p = to_fimc_pipeline(ve->pipe);
|
/*
|
* Nothing to do if we are disabling the pipeline, some link
|
* has been disconnected and p->subdevs array is cleared now.
|
*/
|
if (!enable && p->subdevs[IDX_SENSOR] == NULL)
|
return 0;
|
|
if (enable)
|
ret = __fimc_pipeline_open(ve->pipe, entity, true);
|
else
|
ret = __fimc_pipeline_close(ve->pipe);
|
|
if (ret == 0 && !enable)
|
memset(p->subdevs, 0, sizeof(p->subdevs));
|
|
return ret;
|
}
|
|
/* Locking: called with entity->graph_obj.mdev->graph_mutex mutex held. */
|
static int __fimc_md_modify_pipelines(struct media_entity *entity, bool enable,
|
struct media_graph *graph)
|
{
|
struct media_entity *entity_err = entity;
|
int ret;
|
|
/*
|
* Walk current graph and call the pipeline open/close routine for each
|
* opened video node that belongs to the graph of entities connected
|
* through active links. This is needed as we cannot power on/off the
|
* subdevs in random order.
|
*/
|
media_graph_walk_start(graph, entity);
|
|
while ((entity = media_graph_walk_next(graph))) {
|
if (!is_media_entity_v4l2_video_device(entity))
|
continue;
|
|
ret = __fimc_md_modify_pipeline(entity, enable);
|
|
if (ret < 0)
|
goto err;
|
}
|
|
return 0;
|
|
err:
|
media_graph_walk_start(graph, entity_err);
|
|
while ((entity_err = media_graph_walk_next(graph))) {
|
if (!is_media_entity_v4l2_video_device(entity_err))
|
continue;
|
|
__fimc_md_modify_pipeline(entity_err, !enable);
|
|
if (entity_err == entity)
|
break;
|
}
|
|
return ret;
|
}
|
|
static int fimc_md_link_notify(struct media_link *link, unsigned int flags,
|
unsigned int notification)
|
{
|
struct media_graph *graph =
|
&container_of(link->graph_obj.mdev, struct fimc_md,
|
media_dev)->link_setup_graph;
|
struct media_entity *sink = link->sink->entity;
|
int ret = 0;
|
|
/* Before link disconnection */
|
if (notification == MEDIA_DEV_NOTIFY_PRE_LINK_CH) {
|
ret = media_graph_walk_init(graph,
|
link->graph_obj.mdev);
|
if (ret)
|
return ret;
|
if (!(flags & MEDIA_LNK_FL_ENABLED))
|
ret = __fimc_md_modify_pipelines(sink, false, graph);
|
#if 0
|
else
|
/* TODO: Link state change validation */
|
#endif
|
/* After link activation */
|
} else if (notification == MEDIA_DEV_NOTIFY_POST_LINK_CH) {
|
if (link->flags & MEDIA_LNK_FL_ENABLED)
|
ret = __fimc_md_modify_pipelines(sink, true, graph);
|
media_graph_walk_cleanup(graph);
|
}
|
|
return ret ? -EPIPE : 0;
|
}
|
|
static const struct media_device_ops fimc_md_ops = {
|
.link_notify = fimc_md_link_notify,
|
};
|
|
static ssize_t fimc_md_sysfs_show(struct device *dev,
|
struct device_attribute *attr, char *buf)
|
{
|
struct fimc_md *fmd = dev_get_drvdata(dev);
|
|
if (fmd->user_subdev_api)
|
return strscpy(buf, "Sub-device API (sub-dev)\n", PAGE_SIZE);
|
|
return strscpy(buf, "V4L2 video node only API (vid-dev)\n", PAGE_SIZE);
|
}
|
|
static ssize_t fimc_md_sysfs_store(struct device *dev,
|
struct device_attribute *attr,
|
const char *buf, size_t count)
|
{
|
struct fimc_md *fmd = dev_get_drvdata(dev);
|
bool subdev_api;
|
int i;
|
|
if (!strcmp(buf, "vid-dev\n"))
|
subdev_api = false;
|
else if (!strcmp(buf, "sub-dev\n"))
|
subdev_api = true;
|
else
|
return count;
|
|
fmd->user_subdev_api = subdev_api;
|
for (i = 0; i < FIMC_MAX_DEVS; i++)
|
if (fmd->fimc[i])
|
fmd->fimc[i]->vid_cap.user_subdev_api = subdev_api;
|
return count;
|
}
|
/*
|
* This device attribute is to select video pipeline configuration method.
|
* There are following valid values:
|
* vid-dev - for V4L2 video node API only, subdevice will be configured
|
* by the host driver.
|
* sub-dev - for media controller API, subdevs must be configured in user
|
* space before starting streaming.
|
*/
|
static DEVICE_ATTR(subdev_conf_mode, S_IWUSR | S_IRUGO,
|
fimc_md_sysfs_show, fimc_md_sysfs_store);
|
|
static int cam_clk_prepare(struct clk_hw *hw)
|
{
|
struct cam_clk *camclk = to_cam_clk(hw);
|
|
if (camclk->fmd->pmf == NULL)
|
return -ENODEV;
|
|
return pm_runtime_resume_and_get(camclk->fmd->pmf);
|
}
|
|
static void cam_clk_unprepare(struct clk_hw *hw)
|
{
|
struct cam_clk *camclk = to_cam_clk(hw);
|
|
if (camclk->fmd->pmf == NULL)
|
return;
|
|
pm_runtime_put_sync(camclk->fmd->pmf);
|
}
|
|
static const struct clk_ops cam_clk_ops = {
|
.prepare = cam_clk_prepare,
|
.unprepare = cam_clk_unprepare,
|
};
|
|
static void fimc_md_unregister_clk_provider(struct fimc_md *fmd)
|
{
|
struct cam_clk_provider *cp = &fmd->clk_provider;
|
unsigned int i;
|
|
if (cp->of_node)
|
of_clk_del_provider(cp->of_node);
|
|
for (i = 0; i < cp->num_clocks; i++)
|
clk_unregister(cp->clks[i]);
|
}
|
|
static int fimc_md_register_clk_provider(struct fimc_md *fmd)
|
{
|
struct cam_clk_provider *cp = &fmd->clk_provider;
|
struct device *dev = &fmd->pdev->dev;
|
int i, ret;
|
|
for (i = 0; i < FIMC_MAX_CAMCLKS; i++) {
|
struct cam_clk *camclk = &cp->camclk[i];
|
struct clk_init_data init;
|
const char *p_name;
|
|
ret = of_property_read_string_index(dev->of_node,
|
"clock-output-names", i, &init.name);
|
if (ret < 0)
|
break;
|
|
p_name = __clk_get_name(fmd->camclk[i].clock);
|
|
/* It's safe since clk_register() will duplicate the string. */
|
init.parent_names = &p_name;
|
init.num_parents = 1;
|
init.ops = &cam_clk_ops;
|
init.flags = CLK_SET_RATE_PARENT;
|
camclk->hw.init = &init;
|
camclk->fmd = fmd;
|
|
cp->clks[i] = clk_register(NULL, &camclk->hw);
|
if (IS_ERR(cp->clks[i])) {
|
dev_err(dev, "failed to register clock: %s (%ld)\n",
|
init.name, PTR_ERR(cp->clks[i]));
|
ret = PTR_ERR(cp->clks[i]);
|
goto err;
|
}
|
cp->num_clocks++;
|
}
|
|
if (cp->num_clocks == 0) {
|
dev_warn(dev, "clk provider not registered\n");
|
return 0;
|
}
|
|
cp->clk_data.clks = cp->clks;
|
cp->clk_data.clk_num = cp->num_clocks;
|
cp->of_node = dev->of_node;
|
ret = of_clk_add_provider(dev->of_node, of_clk_src_onecell_get,
|
&cp->clk_data);
|
if (ret == 0)
|
return 0;
|
err:
|
fimc_md_unregister_clk_provider(fmd);
|
return ret;
|
}
|
|
static int subdev_notifier_bound(struct v4l2_async_notifier *notifier,
|
struct v4l2_subdev *subdev,
|
struct v4l2_async_subdev *asd)
|
{
|
struct fimc_md *fmd = notifier_to_fimc_md(notifier);
|
struct fimc_sensor_info *si = NULL;
|
int i;
|
|
/* Find platform data for this sensor subdev */
|
for (i = 0; i < ARRAY_SIZE(fmd->sensor); i++)
|
if (fmd->sensor[i].asd.match.fwnode ==
|
of_fwnode_handle(subdev->dev->of_node))
|
si = &fmd->sensor[i];
|
|
if (si == NULL)
|
return -EINVAL;
|
|
v4l2_set_subdev_hostdata(subdev, &si->pdata);
|
|
if (si->pdata.fimc_bus_type == FIMC_BUS_TYPE_ISP_WRITEBACK)
|
subdev->grp_id = GRP_ID_FIMC_IS_SENSOR;
|
else
|
subdev->grp_id = GRP_ID_SENSOR;
|
|
si->subdev = subdev;
|
|
v4l2_info(&fmd->v4l2_dev, "Registered sensor subdevice: %s (%d)\n",
|
subdev->name, fmd->num_sensors);
|
|
fmd->num_sensors++;
|
|
return 0;
|
}
|
|
static int subdev_notifier_complete(struct v4l2_async_notifier *notifier)
|
{
|
struct fimc_md *fmd = notifier_to_fimc_md(notifier);
|
int ret;
|
|
mutex_lock(&fmd->media_dev.graph_mutex);
|
|
ret = fimc_md_create_links(fmd);
|
if (ret < 0)
|
goto unlock;
|
|
ret = v4l2_device_register_subdev_nodes(&fmd->v4l2_dev);
|
unlock:
|
mutex_unlock(&fmd->media_dev.graph_mutex);
|
if (ret < 0)
|
return ret;
|
|
return media_device_register(&fmd->media_dev);
|
}
|
|
static const struct v4l2_async_notifier_operations subdev_notifier_ops = {
|
.bound = subdev_notifier_bound,
|
.complete = subdev_notifier_complete,
|
};
|
|
static int fimc_md_probe(struct platform_device *pdev)
|
{
|
struct device *dev = &pdev->dev;
|
struct v4l2_device *v4l2_dev;
|
struct pinctrl *pinctrl;
|
struct fimc_md *fmd;
|
int ret;
|
|
fmd = devm_kzalloc(dev, sizeof(*fmd), GFP_KERNEL);
|
if (!fmd)
|
return -ENOMEM;
|
|
spin_lock_init(&fmd->slock);
|
INIT_LIST_HEAD(&fmd->pipelines);
|
fmd->pdev = pdev;
|
|
strscpy(fmd->media_dev.model, "Samsung S5P FIMC",
|
sizeof(fmd->media_dev.model));
|
fmd->media_dev.ops = &fimc_md_ops;
|
fmd->media_dev.dev = dev;
|
|
v4l2_dev = &fmd->v4l2_dev;
|
v4l2_dev->mdev = &fmd->media_dev;
|
v4l2_dev->notify = fimc_sensor_notify;
|
strscpy(v4l2_dev->name, "s5p-fimc-md", sizeof(v4l2_dev->name));
|
|
fmd->use_isp = fimc_md_is_isp_available(dev->of_node);
|
fmd->user_subdev_api = true;
|
|
media_device_init(&fmd->media_dev);
|
|
ret = v4l2_device_register(dev, &fmd->v4l2_dev);
|
if (ret < 0) {
|
v4l2_err(v4l2_dev, "Failed to register v4l2_device: %d\n", ret);
|
goto err_md;
|
}
|
|
ret = fimc_md_get_clocks(fmd);
|
if (ret)
|
goto err_v4l2dev;
|
|
pinctrl = devm_pinctrl_get(dev);
|
if (IS_ERR(pinctrl)) {
|
ret = PTR_ERR(pinctrl);
|
if (ret != EPROBE_DEFER)
|
dev_err(dev, "Failed to get pinctrl: %d\n", ret);
|
goto err_clk;
|
}
|
|
platform_set_drvdata(pdev, fmd);
|
|
v4l2_async_notifier_init(&fmd->subdev_notifier);
|
|
ret = fimc_md_register_platform_entities(fmd, dev->of_node);
|
if (ret)
|
goto err_clk;
|
|
ret = fimc_md_register_sensor_entities(fmd);
|
if (ret)
|
goto err_m_ent;
|
|
ret = device_create_file(&pdev->dev, &dev_attr_subdev_conf_mode);
|
if (ret)
|
goto err_cleanup;
|
/*
|
* FIMC platform devices need to be registered before the sclk_cam
|
* clocks provider, as one of these devices needs to be activated
|
* to enable the clock.
|
*/
|
ret = fimc_md_register_clk_provider(fmd);
|
if (ret < 0) {
|
v4l2_err(v4l2_dev, "clock provider registration failed\n");
|
goto err_attr;
|
}
|
|
if (fmd->num_sensors > 0) {
|
fmd->subdev_notifier.ops = &subdev_notifier_ops;
|
fmd->num_sensors = 0;
|
|
ret = v4l2_async_notifier_register(&fmd->v4l2_dev,
|
&fmd->subdev_notifier);
|
if (ret)
|
goto err_clk_p;
|
}
|
|
return 0;
|
|
err_clk_p:
|
fimc_md_unregister_clk_provider(fmd);
|
err_attr:
|
device_remove_file(&pdev->dev, &dev_attr_subdev_conf_mode);
|
err_cleanup:
|
v4l2_async_notifier_cleanup(&fmd->subdev_notifier);
|
err_m_ent:
|
fimc_md_unregister_entities(fmd);
|
err_clk:
|
fimc_md_put_clocks(fmd);
|
err_v4l2dev:
|
v4l2_device_unregister(&fmd->v4l2_dev);
|
err_md:
|
media_device_cleanup(&fmd->media_dev);
|
return ret;
|
}
|
|
static int fimc_md_remove(struct platform_device *pdev)
|
{
|
struct fimc_md *fmd = platform_get_drvdata(pdev);
|
|
if (!fmd)
|
return 0;
|
|
fimc_md_unregister_clk_provider(fmd);
|
v4l2_async_notifier_unregister(&fmd->subdev_notifier);
|
v4l2_async_notifier_cleanup(&fmd->subdev_notifier);
|
|
v4l2_device_unregister(&fmd->v4l2_dev);
|
device_remove_file(&pdev->dev, &dev_attr_subdev_conf_mode);
|
fimc_md_unregister_entities(fmd);
|
fimc_md_pipelines_free(fmd);
|
media_device_unregister(&fmd->media_dev);
|
media_device_cleanup(&fmd->media_dev);
|
fimc_md_put_clocks(fmd);
|
|
return 0;
|
}
|
|
static const struct platform_device_id fimc_driver_ids[] __always_unused = {
|
{ .name = "s5p-fimc-md" },
|
{ },
|
};
|
MODULE_DEVICE_TABLE(platform, fimc_driver_ids);
|
|
static const struct of_device_id fimc_md_of_match[] = {
|
{ .compatible = "samsung,fimc" },
|
{ },
|
};
|
MODULE_DEVICE_TABLE(of, fimc_md_of_match);
|
|
static struct platform_driver fimc_md_driver = {
|
.probe = fimc_md_probe,
|
.remove = fimc_md_remove,
|
.driver = {
|
.of_match_table = of_match_ptr(fimc_md_of_match),
|
.name = "s5p-fimc-md",
|
}
|
};
|
|
static int __init fimc_md_init(void)
|
{
|
int ret;
|
|
request_module("s5p-csis");
|
ret = fimc_register_driver();
|
if (ret)
|
return ret;
|
|
return platform_driver_register(&fimc_md_driver);
|
}
|
|
static void __exit fimc_md_exit(void)
|
{
|
platform_driver_unregister(&fimc_md_driver);
|
fimc_unregister_driver();
|
}
|
|
module_init(fimc_md_init);
|
module_exit(fimc_md_exit);
|
|
MODULE_AUTHOR("Sylwester Nawrocki <s.nawrocki@samsung.com>");
|
MODULE_DESCRIPTION("S5P FIMC camera host interface/video postprocessor driver");
|
MODULE_LICENSE("GPL");
|
MODULE_VERSION("2.0.1");
|
