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path: root/ANDROID_3.4.5/drivers/media/radio/dsbr100.c
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Diffstat (limited to 'ANDROID_3.4.5/drivers/media/radio/dsbr100.c')
-rw-r--r--ANDROID_3.4.5/drivers/media/radio/dsbr100.c632
1 files changed, 0 insertions, 632 deletions
diff --git a/ANDROID_3.4.5/drivers/media/radio/dsbr100.c b/ANDROID_3.4.5/drivers/media/radio/dsbr100.c
deleted file mode 100644
index f36905b6..00000000
--- a/ANDROID_3.4.5/drivers/media/radio/dsbr100.c
+++ /dev/null
@@ -1,632 +0,0 @@
-/* A driver for the D-Link DSB-R100 USB radio and Gemtek USB Radio 21.
- The device plugs into both the USB and an analog audio input, so this thing
- only deals with initialisation and frequency setting, the
- audio data has to be handled by a sound driver.
-
- Major issue: I can't find out where the device reports the signal
- strength, and indeed the windows software appearantly just looks
- at the stereo indicator as well. So, scanning will only find
- stereo stations. Sad, but I can't help it.
-
- Also, the windows program sends oodles of messages over to the
- device, and I couldn't figure out their meaning. My suspicion
- is that they don't have any:-)
-
- You might find some interesting stuff about this module at
- http://unimut.fsk.uni-heidelberg.de/unimut/demi/dsbr
-
- Copyright (c) 2000 Markus Demleitner <msdemlei@cl.uni-heidelberg.de>
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-
- History:
-
- Version 0.46:
- Removed usb_dsbr100_open/close calls and radio->users counter. Also,
- radio->muted changed to radio->status and suspend/resume calls updated.
-
- Version 0.45:
- Converted to v4l2_device.
-
- Version 0.44:
- Add suspend/resume functions, fix unplug of device,
- a lot of cleanups and fixes by Alexey Klimov <klimov.linux@gmail.com>
-
- Version 0.43:
- Oliver Neukum: avoided DMA coherency issue
-
- Version 0.42:
- Converted dsbr100 to use video_ioctl2
- by Douglas Landgraf <dougsland@gmail.com>
-
- Version 0.41-ac1:
- Alan Cox: Some cleanups and fixes
-
- Version 0.41:
- Converted to V4L2 API by Mauro Carvalho Chehab <mchehab@infradead.org>
-
- Version 0.40:
- Markus: Updates for 2.6.x kernels, code layout changes, name sanitizing
-
- Version 0.30:
- Markus: Updates for 2.5.x kernel and more ISO compliant source
-
- Version 0.25:
- PSL and Markus: Cleanup, radio now doesn't stop on device close
-
- Version 0.24:
- Markus: Hope I got these silly VIDEO_TUNER_LOW issues finally
- right. Some minor cleanup, improved standalone compilation
-
- Version 0.23:
- Markus: Sign extension bug fixed by declaring transfer_buffer unsigned
-
- Version 0.22:
- Markus: Some (brown bag) cleanup in what VIDIOCSTUNER returns,
- thanks to Mike Cox for pointing the problem out.
-
- Version 0.21:
- Markus: Minor cleanup, warnings if something goes wrong, lame attempt
- to adhere to Documentation/CodingStyle
-
- Version 0.2:
- Brad Hards <bradh@dynamite.com.au>: Fixes to make it work as non-module
- Markus: Copyright clarification
-
- Version 0.01: Markus: initial release
-
-*/
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/slab.h>
-#include <linux/input.h>
-#include <linux/videodev2.h>
-#include <media/v4l2-device.h>
-#include <media/v4l2-ioctl.h>
-#include <linux/usb.h>
-
-/*
- * Version Information
- */
-#define DRIVER_VERSION "0.4.7"
-
-#define DRIVER_AUTHOR "Markus Demleitner <msdemlei@tucana.harvard.edu>"
-#define DRIVER_DESC "D-Link DSB-R100 USB FM radio driver"
-
-#define DSB100_VENDOR 0x04b4
-#define DSB100_PRODUCT 0x1002
-
-/* Commands the device appears to understand */
-#define DSB100_TUNE 1
-#define DSB100_ONOFF 2
-
-#define TB_LEN 16
-
-/* Frequency limits in MHz -- these are European values. For Japanese
-devices, that would be 76 and 91. */
-#define FREQ_MIN 87.5
-#define FREQ_MAX 108.0
-#define FREQ_MUL 16000
-
-/* defines for radio->status */
-#define STARTED 0
-#define STOPPED 1
-
-#define v4l2_dev_to_radio(d) container_of(d, struct dsbr100_device, v4l2_dev)
-
-static int usb_dsbr100_probe(struct usb_interface *intf,
- const struct usb_device_id *id);
-static void usb_dsbr100_disconnect(struct usb_interface *intf);
-static int usb_dsbr100_suspend(struct usb_interface *intf,
- pm_message_t message);
-static int usb_dsbr100_resume(struct usb_interface *intf);
-
-static int radio_nr = -1;
-module_param(radio_nr, int, 0);
-
-/* Data for one (physical) device */
-struct dsbr100_device {
- struct usb_device *usbdev;
- struct video_device videodev;
- struct v4l2_device v4l2_dev;
-
- u8 *transfer_buffer;
- struct mutex v4l2_lock;
- int curfreq;
- int stereo;
- int status;
-};
-
-static struct usb_device_id usb_dsbr100_device_table [] = {
- { USB_DEVICE(DSB100_VENDOR, DSB100_PRODUCT) },
- { } /* Terminating entry */
-};
-
-MODULE_DEVICE_TABLE (usb, usb_dsbr100_device_table);
-
-/* USB subsystem interface */
-static struct usb_driver usb_dsbr100_driver = {
- .name = "dsbr100",
- .probe = usb_dsbr100_probe,
- .disconnect = usb_dsbr100_disconnect,
- .id_table = usb_dsbr100_device_table,
- .suspend = usb_dsbr100_suspend,
- .resume = usb_dsbr100_resume,
- .reset_resume = usb_dsbr100_resume,
- .supports_autosuspend = 0,
-};
-
-/* Low-level device interface begins here */
-
-/* switch on radio */
-static int dsbr100_start(struct dsbr100_device *radio)
-{
- int retval;
- int request;
-
- retval = usb_control_msg(radio->usbdev,
- usb_rcvctrlpipe(radio->usbdev, 0),
- USB_REQ_GET_STATUS,
- USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
- 0x00, 0xC7, radio->transfer_buffer, 8, 300);
-
- if (retval < 0) {
- request = USB_REQ_GET_STATUS;
- goto usb_control_msg_failed;
- }
-
- retval = usb_control_msg(radio->usbdev,
- usb_rcvctrlpipe(radio->usbdev, 0),
- DSB100_ONOFF,
- USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
- 0x01, 0x00, radio->transfer_buffer, 8, 300);
-
- if (retval < 0) {
- request = DSB100_ONOFF;
- goto usb_control_msg_failed;
- }
-
- radio->status = STARTED;
- return (radio->transfer_buffer)[0];
-
-usb_control_msg_failed:
- dev_err(&radio->usbdev->dev,
- "%s - usb_control_msg returned %i, request %i\n",
- __func__, retval, request);
- return retval;
-
-}
-
-/* switch off radio */
-static int dsbr100_stop(struct dsbr100_device *radio)
-{
- int retval;
- int request;
-
- retval = usb_control_msg(radio->usbdev,
- usb_rcvctrlpipe(radio->usbdev, 0),
- USB_REQ_GET_STATUS,
- USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
- 0x16, 0x1C, radio->transfer_buffer, 8, 300);
-
- if (retval < 0) {
- request = USB_REQ_GET_STATUS;
- goto usb_control_msg_failed;
- }
-
- retval = usb_control_msg(radio->usbdev,
- usb_rcvctrlpipe(radio->usbdev, 0),
- DSB100_ONOFF,
- USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
- 0x00, 0x00, radio->transfer_buffer, 8, 300);
-
- if (retval < 0) {
- request = DSB100_ONOFF;
- goto usb_control_msg_failed;
- }
-
- radio->status = STOPPED;
- return (radio->transfer_buffer)[0];
-
-usb_control_msg_failed:
- dev_err(&radio->usbdev->dev,
- "%s - usb_control_msg returned %i, request %i\n",
- __func__, retval, request);
- return retval;
-
-}
-
-/* set a frequency, freq is defined by v4l's TUNER_LOW, i.e. 1/16th kHz */
-static int dsbr100_setfreq(struct dsbr100_device *radio)
-{
- int retval;
- int request;
- int freq = (radio->curfreq / 16 * 80) / 1000 + 856;
-
- retval = usb_control_msg(radio->usbdev,
- usb_rcvctrlpipe(radio->usbdev, 0),
- DSB100_TUNE,
- USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
- (freq >> 8) & 0x00ff, freq & 0xff,
- radio->transfer_buffer, 8, 300);
-
- if (retval < 0) {
- request = DSB100_TUNE;
- goto usb_control_msg_failed;
- }
-
- retval = usb_control_msg(radio->usbdev,
- usb_rcvctrlpipe(radio->usbdev, 0),
- USB_REQ_GET_STATUS,
- USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
- 0x96, 0xB7, radio->transfer_buffer, 8, 300);
-
- if (retval < 0) {
- request = USB_REQ_GET_STATUS;
- goto usb_control_msg_failed;
- }
-
- retval = usb_control_msg(radio->usbdev,
- usb_rcvctrlpipe(radio->usbdev, 0),
- USB_REQ_GET_STATUS,
- USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
- 0x00, 0x24, radio->transfer_buffer, 8, 300);
-
- if (retval < 0) {
- request = USB_REQ_GET_STATUS;
- goto usb_control_msg_failed;
- }
-
- radio->stereo = !((radio->transfer_buffer)[0] & 0x01);
- return (radio->transfer_buffer)[0];
-
-usb_control_msg_failed:
- radio->stereo = -1;
- dev_err(&radio->usbdev->dev,
- "%s - usb_control_msg returned %i, request %i\n",
- __func__, retval, request);
- return retval;
-}
-
-/* return the device status. This is, in effect, just whether it
-sees a stereo signal or not. Pity. */
-static void dsbr100_getstat(struct dsbr100_device *radio)
-{
- int retval;
-
- retval = usb_control_msg(radio->usbdev,
- usb_rcvctrlpipe(radio->usbdev, 0),
- USB_REQ_GET_STATUS,
- USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
- 0x00 , 0x24, radio->transfer_buffer, 8, 300);
-
- if (retval < 0) {
- radio->stereo = -1;
- dev_err(&radio->usbdev->dev,
- "%s - usb_control_msg returned %i, request %i\n",
- __func__, retval, USB_REQ_GET_STATUS);
- } else {
- radio->stereo = !(radio->transfer_buffer[0] & 0x01);
- }
-}
-
-static int vidioc_querycap(struct file *file, void *priv,
- struct v4l2_capability *v)
-{
- struct dsbr100_device *radio = video_drvdata(file);
-
- strlcpy(v->driver, "dsbr100", sizeof(v->driver));
- strlcpy(v->card, "D-Link R-100 USB FM Radio", sizeof(v->card));
- usb_make_path(radio->usbdev, v->bus_info, sizeof(v->bus_info));
- v->capabilities = V4L2_CAP_TUNER;
- return 0;
-}
-
-static int vidioc_g_tuner(struct file *file, void *priv,
- struct v4l2_tuner *v)
-{
- struct dsbr100_device *radio = video_drvdata(file);
-
- if (v->index > 0)
- return -EINVAL;
-
- dsbr100_getstat(radio);
- strcpy(v->name, "FM");
- v->type = V4L2_TUNER_RADIO;
- v->rangelow = FREQ_MIN * FREQ_MUL;
- v->rangehigh = FREQ_MAX * FREQ_MUL;
- v->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
- v->capability = V4L2_TUNER_CAP_LOW;
- if(radio->stereo)
- v->audmode = V4L2_TUNER_MODE_STEREO;
- else
- v->audmode = V4L2_TUNER_MODE_MONO;
- v->signal = 0xffff; /* We can't get the signal strength */
- return 0;
-}
-
-static int vidioc_s_tuner(struct file *file, void *priv,
- struct v4l2_tuner *v)
-{
- return v->index ? -EINVAL : 0;
-}
-
-static int vidioc_s_frequency(struct file *file, void *priv,
- struct v4l2_frequency *f)
-{
- struct dsbr100_device *radio = video_drvdata(file);
- int retval;
-
- radio->curfreq = f->frequency;
-
- retval = dsbr100_setfreq(radio);
- if (retval < 0)
- dev_warn(&radio->usbdev->dev, "Set frequency failed\n");
- return 0;
-}
-
-static int vidioc_g_frequency(struct file *file, void *priv,
- struct v4l2_frequency *f)
-{
- struct dsbr100_device *radio = video_drvdata(file);
-
- f->type = V4L2_TUNER_RADIO;
- f->frequency = radio->curfreq;
- return 0;
-}
-
-static int vidioc_queryctrl(struct file *file, void *priv,
- struct v4l2_queryctrl *qc)
-{
- switch (qc->id) {
- case V4L2_CID_AUDIO_MUTE:
- return v4l2_ctrl_query_fill(qc, 0, 1, 1, 1);
- }
-
- return -EINVAL;
-}
-
-static int vidioc_g_ctrl(struct file *file, void *priv,
- struct v4l2_control *ctrl)
-{
- struct dsbr100_device *radio = video_drvdata(file);
-
- switch (ctrl->id) {
- case V4L2_CID_AUDIO_MUTE:
- ctrl->value = radio->status;
- return 0;
- }
- return -EINVAL;
-}
-
-static int vidioc_s_ctrl(struct file *file, void *priv,
- struct v4l2_control *ctrl)
-{
- struct dsbr100_device *radio = video_drvdata(file);
- int retval;
-
- switch (ctrl->id) {
- case V4L2_CID_AUDIO_MUTE:
- if (ctrl->value) {
- retval = dsbr100_stop(radio);
- if (retval < 0) {
- dev_warn(&radio->usbdev->dev,
- "Radio did not respond properly\n");
- return -EBUSY;
- }
- } else {
- retval = dsbr100_start(radio);
- if (retval < 0) {
- dev_warn(&radio->usbdev->dev,
- "Radio did not respond properly\n");
- return -EBUSY;
- }
- }
- return 0;
- }
- return -EINVAL;
-}
-
-static int vidioc_g_audio(struct file *file, void *priv,
- struct v4l2_audio *a)
-{
- if (a->index > 1)
- return -EINVAL;
-
- strcpy(a->name, "Radio");
- a->capability = V4L2_AUDCAP_STEREO;
- return 0;
-}
-
-static int vidioc_g_input(struct file *filp, void *priv, unsigned int *i)
-{
- *i = 0;
- return 0;
-}
-
-static int vidioc_s_input(struct file *filp, void *priv, unsigned int i)
-{
- return i ? -EINVAL : 0;
-}
-
-static int vidioc_s_audio(struct file *file, void *priv,
- struct v4l2_audio *a)
-{
- return a->index ? -EINVAL : 0;
-}
-
-/* USB subsystem interface begins here */
-
-/*
- * Handle unplugging of the device.
- * We call video_unregister_device in any case.
- * The last function called in this procedure is
- * usb_dsbr100_video_device_release
- */
-static void usb_dsbr100_disconnect(struct usb_interface *intf)
-{
- struct dsbr100_device *radio = usb_get_intfdata(intf);
-
- v4l2_device_get(&radio->v4l2_dev);
- mutex_lock(&radio->v4l2_lock);
- usb_set_intfdata(intf, NULL);
- video_unregister_device(&radio->videodev);
- v4l2_device_disconnect(&radio->v4l2_dev);
- mutex_unlock(&radio->v4l2_lock);
- v4l2_device_put(&radio->v4l2_dev);
-}
-
-
-/* Suspend device - stop device. */
-static int usb_dsbr100_suspend(struct usb_interface *intf, pm_message_t message)
-{
- struct dsbr100_device *radio = usb_get_intfdata(intf);
- int retval;
-
- mutex_lock(&radio->v4l2_lock);
- if (radio->status == STARTED) {
- retval = dsbr100_stop(radio);
- if (retval < 0)
- dev_warn(&intf->dev, "dsbr100_stop failed\n");
-
- /* After dsbr100_stop() status set to STOPPED.
- * If we want driver to start radio on resume
- * we set status equal to STARTED.
- * On resume we will check status and run radio if needed.
- */
- radio->status = STARTED;
- }
- mutex_unlock(&radio->v4l2_lock);
-
- dev_info(&intf->dev, "going into suspend..\n");
-
- return 0;
-}
-
-/* Resume device - start device. */
-static int usb_dsbr100_resume(struct usb_interface *intf)
-{
- struct dsbr100_device *radio = usb_get_intfdata(intf);
- int retval;
-
- mutex_lock(&radio->v4l2_lock);
- if (radio->status == STARTED) {
- retval = dsbr100_start(radio);
- if (retval < 0)
- dev_warn(&intf->dev, "dsbr100_start failed\n");
- }
- mutex_unlock(&radio->v4l2_lock);
-
- dev_info(&intf->dev, "coming out of suspend..\n");
-
- return 0;
-}
-
-/* free data structures */
-static void usb_dsbr100_release(struct v4l2_device *v4l2_dev)
-{
- struct dsbr100_device *radio = v4l2_dev_to_radio(v4l2_dev);
-
- v4l2_device_unregister(&radio->v4l2_dev);
- kfree(radio->transfer_buffer);
- kfree(radio);
-}
-
-/* File system interface */
-static const struct v4l2_file_operations usb_dsbr100_fops = {
- .owner = THIS_MODULE,
- .unlocked_ioctl = video_ioctl2,
-};
-
-static const struct v4l2_ioctl_ops usb_dsbr100_ioctl_ops = {
- .vidioc_querycap = vidioc_querycap,
- .vidioc_g_tuner = vidioc_g_tuner,
- .vidioc_s_tuner = vidioc_s_tuner,
- .vidioc_g_frequency = vidioc_g_frequency,
- .vidioc_s_frequency = vidioc_s_frequency,
- .vidioc_queryctrl = vidioc_queryctrl,
- .vidioc_g_ctrl = vidioc_g_ctrl,
- .vidioc_s_ctrl = vidioc_s_ctrl,
- .vidioc_g_audio = vidioc_g_audio,
- .vidioc_s_audio = vidioc_s_audio,
- .vidioc_g_input = vidioc_g_input,
- .vidioc_s_input = vidioc_s_input,
-};
-
-/* check if the device is present and register with v4l and usb if it is */
-static int usb_dsbr100_probe(struct usb_interface *intf,
- const struct usb_device_id *id)
-{
- struct dsbr100_device *radio;
- struct v4l2_device *v4l2_dev;
- int retval;
-
- radio = kzalloc(sizeof(struct dsbr100_device), GFP_KERNEL);
-
- if (!radio)
- return -ENOMEM;
-
- radio->transfer_buffer = kmalloc(TB_LEN, GFP_KERNEL);
-
- if (!(radio->transfer_buffer)) {
- kfree(radio);
- return -ENOMEM;
- }
-
- v4l2_dev = &radio->v4l2_dev;
- v4l2_dev->release = usb_dsbr100_release;
-
- retval = v4l2_device_register(&intf->dev, v4l2_dev);
- if (retval < 0) {
- v4l2_err(v4l2_dev, "couldn't register v4l2_device\n");
- kfree(radio->transfer_buffer);
- kfree(radio);
- return retval;
- }
-
- mutex_init(&radio->v4l2_lock);
- strlcpy(radio->videodev.name, v4l2_dev->name, sizeof(radio->videodev.name));
- radio->videodev.v4l2_dev = v4l2_dev;
- radio->videodev.fops = &usb_dsbr100_fops;
- radio->videodev.ioctl_ops = &usb_dsbr100_ioctl_ops;
- radio->videodev.release = video_device_release_empty;
- radio->videodev.lock = &radio->v4l2_lock;
-
- radio->usbdev = interface_to_usbdev(intf);
- radio->curfreq = FREQ_MIN * FREQ_MUL;
- radio->status = STOPPED;
-
- video_set_drvdata(&radio->videodev, radio);
-
- retval = video_register_device(&radio->videodev, VFL_TYPE_RADIO, radio_nr);
- if (retval < 0) {
- v4l2_err(v4l2_dev, "couldn't register video device\n");
- v4l2_device_unregister(v4l2_dev);
- kfree(radio->transfer_buffer);
- kfree(radio);
- return -EIO;
- }
- usb_set_intfdata(intf, radio);
- return 0;
-}
-
-module_usb_driver(usb_dsbr100_driver);
-
-MODULE_AUTHOR( DRIVER_AUTHOR );
-MODULE_DESCRIPTION( DRIVER_DESC );
-MODULE_LICENSE("GPL");
-MODULE_VERSION(DRIVER_VERSION);
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