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path: root/drivers/media/radio/radio-timb.c
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Diffstat (limited to 'drivers/media/radio/radio-timb.c')
-rw-r--r--drivers/media/radio/radio-timb.c176
1 files changed, 176 insertions, 0 deletions
diff --git a/drivers/media/radio/radio-timb.c b/drivers/media/radio/radio-timb.c
new file mode 100644
index 0000000000..04daa9c358
--- /dev/null
+++ b/drivers/media/radio/radio-timb.c
@@ -0,0 +1,176 @@
+// 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 void 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);
+}
+
+static struct platform_driver timbradio_platform_driver = {
+ .driver = {
+ .name = DRIVER_NAME,
+ },
+ .probe = timbradio_probe,
+ .remove_new = 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);