linux-stable/drivers/media/radio/radio-timb.c
Mauro Carvalho Chehab 5800571960 Linux 5.2-rc4
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Merge tag 'v5.2-rc4' into media/master

There are some conflicts due to SPDX changes. We also have more
patches being merged via media tree touching them.

So, let's merge back from upstream and address those.

Linux 5.2-rc4

* tag 'v5.2-rc4': (767 commits)
  Linux 5.2-rc4
  MAINTAINERS: Karthikeyan Ramasubramanian is MIA
  i2c: xiic: Add max_read_len quirk
  lockref: Limit number of cmpxchg loop retries
  uaccess: add noop untagged_addr definition
  x86/insn-eval: Fix use-after-free access to LDT entry
  kbuild: use more portable 'command -v' for cc-cross-prefix
  s390/unwind: correct stack switching during unwind
  block, bfq: add weight symlink to the bfq.weight cgroup parameter
  cgroup: let a symlink too be created with a cftype file
  drm/nouveau/secboot/gp10[2467]: support newer FW to fix SEC2 failures on some boards
  drm/nouveau/secboot: enable loading of versioned LS PMU/SEC2 ACR msgqueue FW
  drm/nouveau/secboot: split out FW version-specific LS function pointers
  drm/nouveau/secboot: pass max supported FW version to LS load funcs
  drm/nouveau/core: support versioned firmware loading
  drm/nouveau/core: pass subdev into nvkm_firmware_get, rather than device
  block: free sched's request pool in blk_cleanup_queue
  pktgen: do not sleep with the thread lock held.
  net: mvpp2: Use strscpy to handle stat strings
  net: rds: fix memory leak in rds_ib_flush_mr_pool
  ...

Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2019-06-11 12:09:28 -04:00

177 lines
4.7 KiB
C

// SPDX-License-Identifier: GPL-2.0-only
/*
* radio-timb.c Timberdale FPGA Radio driver
* Copyright (c) 2009 Intel Corporation
*/
#include <linux/io.h>
#include <media/v4l2-ioctl.h>
#include <media/v4l2-device.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-event.h>
#include <linux/platform_device.h>
#include <linux/interrupt.h>
#include <linux/slab.h>
#include <linux/i2c.h>
#include <linux/module.h>
#include <linux/platform_data/media/timb_radio.h>
#define DRIVER_NAME "timb-radio"
struct timbradio {
struct timb_radio_platform_data pdata;
struct v4l2_subdev *sd_tuner;
struct v4l2_subdev *sd_dsp;
struct video_device video_dev;
struct v4l2_device v4l2_dev;
struct mutex lock;
};
static int timbradio_vidioc_querycap(struct file *file, void *priv,
struct v4l2_capability *v)
{
strscpy(v->driver, DRIVER_NAME, sizeof(v->driver));
strscpy(v->card, "Timberdale Radio", sizeof(v->card));
snprintf(v->bus_info, sizeof(v->bus_info), "platform:"DRIVER_NAME);
return 0;
}
static int timbradio_vidioc_g_tuner(struct file *file, void *priv,
struct v4l2_tuner *v)
{
struct timbradio *tr = video_drvdata(file);
return v4l2_subdev_call(tr->sd_tuner, tuner, g_tuner, v);
}
static int timbradio_vidioc_s_tuner(struct file *file, void *priv,
const struct v4l2_tuner *v)
{
struct timbradio *tr = video_drvdata(file);
return v4l2_subdev_call(tr->sd_tuner, tuner, s_tuner, v);
}
static int timbradio_vidioc_s_frequency(struct file *file, void *priv,
const struct v4l2_frequency *f)
{
struct timbradio *tr = video_drvdata(file);
return v4l2_subdev_call(tr->sd_tuner, tuner, s_frequency, f);
}
static int timbradio_vidioc_g_frequency(struct file *file, void *priv,
struct v4l2_frequency *f)
{
struct timbradio *tr = video_drvdata(file);
return v4l2_subdev_call(tr->sd_tuner, tuner, g_frequency, f);
}
static const struct v4l2_ioctl_ops timbradio_ioctl_ops = {
.vidioc_querycap = timbradio_vidioc_querycap,
.vidioc_g_tuner = timbradio_vidioc_g_tuner,
.vidioc_s_tuner = timbradio_vidioc_s_tuner,
.vidioc_g_frequency = timbradio_vidioc_g_frequency,
.vidioc_s_frequency = timbradio_vidioc_s_frequency,
.vidioc_log_status = v4l2_ctrl_log_status,
.vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
.vidioc_unsubscribe_event = v4l2_event_unsubscribe,
};
static const struct v4l2_file_operations timbradio_fops = {
.owner = THIS_MODULE,
.open = v4l2_fh_open,
.release = v4l2_fh_release,
.poll = v4l2_ctrl_poll,
.unlocked_ioctl = video_ioctl2,
};
static int timbradio_probe(struct platform_device *pdev)
{
struct timb_radio_platform_data *pdata = pdev->dev.platform_data;
struct timbradio *tr;
int err;
if (!pdata) {
dev_err(&pdev->dev, "Platform data missing\n");
err = -EINVAL;
goto err;
}
tr = devm_kzalloc(&pdev->dev, sizeof(*tr), GFP_KERNEL);
if (!tr) {
err = -ENOMEM;
goto err;
}
tr->pdata = *pdata;
mutex_init(&tr->lock);
strscpy(tr->video_dev.name, "Timberdale Radio",
sizeof(tr->video_dev.name));
tr->video_dev.fops = &timbradio_fops;
tr->video_dev.ioctl_ops = &timbradio_ioctl_ops;
tr->video_dev.release = video_device_release_empty;
tr->video_dev.minor = -1;
tr->video_dev.lock = &tr->lock;
tr->video_dev.device_caps = V4L2_CAP_TUNER | V4L2_CAP_RADIO;
strscpy(tr->v4l2_dev.name, DRIVER_NAME, sizeof(tr->v4l2_dev.name));
err = v4l2_device_register(NULL, &tr->v4l2_dev);
if (err)
goto err;
tr->video_dev.v4l2_dev = &tr->v4l2_dev;
tr->sd_tuner = v4l2_i2c_new_subdev_board(&tr->v4l2_dev,
i2c_get_adapter(pdata->i2c_adapter), pdata->tuner, NULL);
tr->sd_dsp = v4l2_i2c_new_subdev_board(&tr->v4l2_dev,
i2c_get_adapter(pdata->i2c_adapter), pdata->dsp, NULL);
if (tr->sd_tuner == NULL || tr->sd_dsp == NULL) {
err = -ENODEV;
goto err_video_req;
}
tr->v4l2_dev.ctrl_handler = tr->sd_dsp->ctrl_handler;
err = video_register_device(&tr->video_dev, VFL_TYPE_RADIO, -1);
if (err) {
dev_err(&pdev->dev, "Error reg video\n");
goto err_video_req;
}
video_set_drvdata(&tr->video_dev, tr);
platform_set_drvdata(pdev, tr);
return 0;
err_video_req:
v4l2_device_unregister(&tr->v4l2_dev);
err:
dev_err(&pdev->dev, "Failed to register: %d\n", err);
return err;
}
static int timbradio_remove(struct platform_device *pdev)
{
struct timbradio *tr = platform_get_drvdata(pdev);
video_unregister_device(&tr->video_dev);
v4l2_device_unregister(&tr->v4l2_dev);
return 0;
}
static struct platform_driver timbradio_platform_driver = {
.driver = {
.name = DRIVER_NAME,
},
.probe = timbradio_probe,
.remove = timbradio_remove,
};
module_platform_driver(timbradio_platform_driver);
MODULE_DESCRIPTION("Timberdale Radio driver");
MODULE_AUTHOR("Mocean Laboratories <info@mocean-labs.com>");
MODULE_LICENSE("GPL v2");
MODULE_VERSION("0.0.2");
MODULE_ALIAS("platform:"DRIVER_NAME);