-/* radiotrack (radioreveal) driver for Linux radio support
- * (c) 1997 M. Kirkwood
+/*
+ * AimsLab RadioTrack (aka RadioVeveal) driver
+ *
+ * Copyright 1997 M. Kirkwood
+ *
+ * Converted to the radio-isa framework by Hans Verkuil <hans.verkuil@cisco.com>
* Converted to V4L2 API by Mauro Carvalho Chehab <mchehab@infradead.org>
* Converted to new API by Alan Cox <alan@lxorguk.ukuu.org.uk>
* Various bugfixes and enhancements by Russell Kroll <rkroll@exploits.org>
*
- * History:
- * 1999-02-24 Russell Kroll <rkroll@exploits.org>
- * Fine tuning/VIDEO_TUNER_LOW
- * Frequency range expanded to start at 87 MHz
- *
- * TODO: Allow for more than one of these foolish entities :-)
- *
* Notes on the hardware (reverse engineered from other peoples'
* reverse engineering of AIMS' code :-)
*
* wait(a_wee_while);
* out(port, stop_changing_the_volume);
*
+ * Fully tested with the Keene USB FM Transmitter and the v4l2-compliance tool.
*/
#include <linux/module.h> /* Modules */
#include <linux/io.h> /* outb, outb_p */
#include <media/v4l2-device.h>
#include <media/v4l2-ioctl.h>
+#include <media/v4l2-ctrls.h>
+#include "radio-isa.h"
-MODULE_AUTHOR("M.Kirkwood");
+MODULE_AUTHOR("M. Kirkwood");
MODULE_DESCRIPTION("A driver for the RadioTrack/RadioReveal radio card.");
MODULE_LICENSE("GPL");
-MODULE_VERSION("0.0.3");
+MODULE_VERSION("1.0.0");
#ifndef CONFIG_RADIO_RTRACK_PORT
#define CONFIG_RADIO_RTRACK_PORT -1
#endif
-static int io = CONFIG_RADIO_RTRACK_PORT;
-static int radio_nr = -1;
+#define RTRACK_MAX 2
-module_param(io, int, 0);
-MODULE_PARM_DESC(io, "I/O address of the RadioTrack card (0x20f or 0x30f)");
-module_param(radio_nr, int, 0);
+static int io[RTRACK_MAX] = { [0] = CONFIG_RADIO_RTRACK_PORT,
+ [1 ... (RTRACK_MAX - 1)] = -1 };
+static int radio_nr[RTRACK_MAX] = { [0 ... (RTRACK_MAX - 1)] = -1 };
-struct rtrack
-{
- struct v4l2_device v4l2_dev;
- struct video_device vdev;
- int port;
+module_param_array(io, int, NULL, 0444);
+MODULE_PARM_DESC(io, "I/O addresses of the RadioTrack card (0x20f or 0x30f)");
+module_param_array(radio_nr, int, NULL, 0444);
+MODULE_PARM_DESC(radio_nr, "Radio device numbers");
+
+struct rtrack {
+ struct radio_isa_card isa;
int curvol;
- unsigned long curfreq;
- int muted;
- int io;
- struct mutex lock;
};
-static struct rtrack rtrack_card;
-
-/* local things */
-
-static void rt_decvol(struct rtrack *rt)
-{
- outb(0x58, rt->io); /* volume down + sigstr + on */
- msleep(100);
- outb(0xd8, rt->io); /* volume steady + sigstr + on */
-}
-
-static void rt_incvol(struct rtrack *rt)
-{
- outb(0x98, rt->io); /* volume up + sigstr + on */
- msleep(100);
- outb(0xd8, rt->io); /* volume steady + sigstr + on */
-}
-
-static void rt_mute(struct rtrack *rt)
-{
- rt->muted = 1;
- mutex_lock(&rt->lock);
- outb(0xd0, rt->io); /* volume steady, off */
- mutex_unlock(&rt->lock);
-}
-
-static int rt_setvol(struct rtrack *rt, int vol)
+static struct radio_isa_card *rtrack_alloc(void)
{
- int i;
-
- mutex_lock(&rt->lock);
-
- if (vol == rt->curvol) { /* requested volume = current */
- if (rt->muted) { /* user is unmuting the card */
- rt->muted = 0;
- outb(0xd8, rt->io); /* enable card */
- }
- mutex_unlock(&rt->lock);
- return 0;
- }
-
- if (vol == 0) { /* volume = 0 means mute the card */
- outb(0x48, rt->io); /* volume down but still "on" */
- msleep(2000); /* make sure it's totally down */
- outb(0xd0, rt->io); /* volume steady, off */
- rt->curvol = 0; /* track the volume state! */
- mutex_unlock(&rt->lock);
- return 0;
- }
+ struct rtrack *rt = kzalloc(sizeof(struct rtrack), GFP_KERNEL);
- rt->muted = 0;
- if (vol > rt->curvol)
- for (i = rt->curvol; i < vol; i++)
- rt_incvol(rt);
- else
- for (i = rt->curvol; i > vol; i--)
- rt_decvol(rt);
-
- rt->curvol = vol;
- mutex_unlock(&rt->lock);
- return 0;
+ if (rt)
+ rt->curvol = 0xff;
+ return rt ? &rt->isa : NULL;
}
-/* the 128+64 on these outb's is to keep the volume stable while tuning
- * without them, the volume _will_ creep up with each frequency change
- * and bit 4 (+16) is to keep the signal strength meter enabled
+/* The 128+64 on these outb's is to keep the volume stable while tuning.
+ * Without them, the volume _will_ creep up with each frequency change
+ * and bit 4 (+16) is to keep the signal strength meter enabled.
*/
-static void send_0_byte(struct rtrack *rt)
+static void send_0_byte(struct radio_isa_card *isa, int on)
{
- if (rt->curvol == 0 || rt->muted) {
- outb_p(128+64+16+ 1, rt->io); /* wr-enable + data low */
- outb_p(128+64+16+2+1, rt->io); /* clock */
- }
- else {
- outb_p(128+64+16+8+ 1, rt->io); /* on + wr-enable + data low */
- outb_p(128+64+16+8+2+1, rt->io); /* clock */
- }
+ outb_p(128+64+16+on+1, isa->io); /* wr-enable + data low */
+ outb_p(128+64+16+on+2+1, isa->io); /* clock */
msleep(1);
}
-static void send_1_byte(struct rtrack *rt)
+static void send_1_byte(struct radio_isa_card *isa, int on)
{
- if (rt->curvol == 0 || rt->muted) {
- outb_p(128+64+16+4 +1, rt->io); /* wr-enable+data high */
- outb_p(128+64+16+4+2+1, rt->io); /* clock */
- }
- else {
- outb_p(128+64+16+8+4 +1, rt->io); /* on+wr-enable+data high */
- outb_p(128+64+16+8+4+2+1, rt->io); /* clock */
- }
-
+ outb_p(128+64+16+on+4+1, isa->io); /* wr-enable+data high */
+ outb_p(128+64+16+on+4+2+1, isa->io); /* clock */
msleep(1);
}
-static int rt_setfreq(struct rtrack *rt, unsigned long freq)
+static int rtrack_s_frequency(struct radio_isa_card *isa, u32 freq)
{
+ int on = v4l2_ctrl_g_ctrl(isa->mute) ? 0 : 8;
int i;
- mutex_lock(&rt->lock); /* Stop other ops interfering */
-
- rt->curfreq = freq;
-
- /* now uses VIDEO_TUNER_LOW for fine tuning */
-
freq += 171200; /* Add 10.7 MHz IF */
freq /= 800; /* Convert to 50 kHz units */
- send_0_byte(rt); /* 0: LSB of frequency */
+ send_0_byte(isa, on); /* 0: LSB of frequency */
for (i = 0; i < 13; i++) /* : frequency bits (1-13) */
if (freq & (1 << i))
- send_1_byte(rt);
+ send_1_byte(isa, on);
else
- send_0_byte(rt);
-
- send_0_byte(rt); /* 14: test bit - always 0 */
- send_0_byte(rt); /* 15: test bit - always 0 */
-
- send_0_byte(rt); /* 16: band data 0 - always 0 */
- send_0_byte(rt); /* 17: band data 1 - always 0 */
- send_0_byte(rt); /* 18: band data 2 - always 0 */
- send_0_byte(rt); /* 19: time base - always 0 */
-
- send_0_byte(rt); /* 20: spacing (0 = 25 kHz) */
- send_1_byte(rt); /* 21: spacing (1 = 25 kHz) */
- send_0_byte(rt); /* 22: spacing (0 = 25 kHz) */
- send_1_byte(rt); /* 23: AM/FM (FM = 1, always) */
-
- if (rt->curvol == 0 || rt->muted)
- outb(0xd0, rt->io); /* volume steady + sigstr */
- else
- outb(0xd8, rt->io); /* volume steady + sigstr + on */
-
- mutex_unlock(&rt->lock);
-
- return 0;
-}
-
-static int rt_getsigstr(struct rtrack *rt)
-{
- int sig = 1;
-
- mutex_lock(&rt->lock);
- if (inb(rt->io) & 2) /* bit set = no signal present */
- sig = 0;
- mutex_unlock(&rt->lock);
- return sig;
-}
-
-static int vidioc_querycap(struct file *file, void *priv,
- struct v4l2_capability *v)
-{
- strlcpy(v->driver, "radio-aimslab", sizeof(v->driver));
- strlcpy(v->card, "RadioTrack", sizeof(v->card));
- strlcpy(v->bus_info, "ISA", sizeof(v->bus_info));
- v->capabilities = V4L2_CAP_TUNER | V4L2_CAP_RADIO;
- return 0;
-}
-
-static int vidioc_g_tuner(struct file *file, void *priv,
- struct v4l2_tuner *v)
-{
- struct rtrack *rt = video_drvdata(file);
+ send_0_byte(isa, on);
- if (v->index > 0)
- return -EINVAL;
+ send_0_byte(isa, on); /* 14: test bit - always 0 */
+ send_0_byte(isa, on); /* 15: test bit - always 0 */
- strlcpy(v->name, "FM", sizeof(v->name));
- v->type = V4L2_TUNER_RADIO;
- v->rangelow = 87 * 16000;
- v->rangehigh = 108 * 16000;
- v->rxsubchans = V4L2_TUNER_SUB_MONO;
- v->capability = V4L2_TUNER_CAP_LOW;
- v->audmode = V4L2_TUNER_MODE_MONO;
- v->signal = 0xffff * rt_getsigstr(rt);
- 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 rtrack *rt = video_drvdata(file);
-
- if (f->tuner != 0 || f->type != V4L2_TUNER_RADIO)
- return -EINVAL;
- rt_setfreq(rt, f->frequency);
- return 0;
-}
+ send_0_byte(isa, on); /* 16: band data 0 - always 0 */
+ send_0_byte(isa, on); /* 17: band data 1 - always 0 */
+ send_0_byte(isa, on); /* 18: band data 2 - always 0 */
+ send_0_byte(isa, on); /* 19: time base - always 0 */
-static int vidioc_g_frequency(struct file *file, void *priv,
- struct v4l2_frequency *f)
-{
- struct rtrack *rt = video_drvdata(file);
+ send_0_byte(isa, on); /* 20: spacing (0 = 25 kHz) */
+ send_1_byte(isa, on); /* 21: spacing (1 = 25 kHz) */
+ send_0_byte(isa, on); /* 22: spacing (0 = 25 kHz) */
+ send_1_byte(isa, on); /* 23: AM/FM (FM = 1, always) */
- if (f->tuner != 0)
- return -EINVAL;
- f->type = V4L2_TUNER_RADIO;
- f->frequency = rt->curfreq;
+ outb(0xd0 + on, isa->io); /* volume steady + sigstr */
return 0;
}
-static int vidioc_queryctrl(struct file *file, void *priv,
- struct v4l2_queryctrl *qc)
+static u32 rtrack_g_signal(struct radio_isa_card *isa)
{
- switch (qc->id) {
- case V4L2_CID_AUDIO_MUTE:
- return v4l2_ctrl_query_fill(qc, 0, 1, 1, 1);
- case V4L2_CID_AUDIO_VOLUME:
- return v4l2_ctrl_query_fill(qc, 0, 0xff, 1, 0xff);
- }
- return -EINVAL;
+ /* bit set = no signal present */
+ return 0xffff * !(inb(isa->io) & 2);
}
-static int vidioc_g_ctrl(struct file *file, void *priv,
- struct v4l2_control *ctrl)
+static int rtrack_s_mute_volume(struct radio_isa_card *isa, bool mute, int vol)
{
- struct rtrack *rt = video_drvdata(file);
+ struct rtrack *rt = container_of(isa, struct rtrack, isa);
+ int curvol = rt->curvol;
- switch (ctrl->id) {
- case V4L2_CID_AUDIO_MUTE:
- ctrl->value = rt->muted;
- return 0;
- case V4L2_CID_AUDIO_VOLUME:
- ctrl->value = rt->curvol;
+ if (mute) {
+ outb(0xd0, isa->io); /* volume steady + sigstr + off */
return 0;
}
- return -EINVAL;
-}
-
-static int vidioc_s_ctrl(struct file *file, void *priv,
- struct v4l2_control *ctrl)
-{
- struct rtrack *rt = video_drvdata(file);
-
- switch (ctrl->id) {
- case V4L2_CID_AUDIO_MUTE:
- if (ctrl->value)
- rt_mute(rt);
- else
- rt_setvol(rt, rt->curvol);
- return 0;
- case V4L2_CID_AUDIO_VOLUME:
- rt_setvol(rt, ctrl->value);
- return 0;
+ if (vol == 0) { /* volume = 0 means mute the card */
+ outb(0x48, isa->io); /* volume down but still "on" */
+ msleep(curvol * 3); /* make sure it's totally down */
+ } else if (curvol < vol) {
+ outb(0x98, isa->io); /* volume up + sigstr + on */
+ for (; curvol < vol; curvol++)
+ udelay(3000);
+ } else if (curvol > vol) {
+ outb(0x58, isa->io); /* volume down + sigstr + on */
+ for (; curvol > vol; curvol--)
+ udelay(3000);
}
- return -EINVAL;
-}
-
-static int vidioc_g_input(struct file *filp, void *priv, unsigned int *i)
-{
- *i = 0;
+ outb(0xd8, isa->io); /* volume steady + sigstr + on */
+ rt->curvol = vol;
return 0;
}
-static int vidioc_s_input(struct file *filp, void *priv, unsigned int i)
+/* Mute card - prevents noisy bootups */
+static int rtrack_initialize(struct radio_isa_card *isa)
{
- return i ? -EINVAL : 0;
-}
-
-static int vidioc_g_audio(struct file *file, void *priv,
- struct v4l2_audio *a)
-{
- a->index = 0;
- strlcpy(a->name, "Radio", sizeof(a->name));
- a->capability = V4L2_AUDCAP_STEREO;
+ /* this ensures that the volume is all the way up */
+ outb(0x90, isa->io); /* volume up but still "on" */
+ msleep(3000); /* make sure it's totally up */
+ outb(0xc0, isa->io); /* steady volume, mute card */
return 0;
}
-static int vidioc_s_audio(struct file *file, void *priv,
- struct v4l2_audio *a)
-{
- return a->index ? -EINVAL : 0;
-}
-
-static const struct v4l2_file_operations rtrack_fops = {
- .owner = THIS_MODULE,
- .unlocked_ioctl = video_ioctl2,
+static const struct radio_isa_ops rtrack_ops = {
+ .alloc = rtrack_alloc,
+ .init = rtrack_initialize,
+ .s_mute_volume = rtrack_s_mute_volume,
+ .s_frequency = rtrack_s_frequency,
+ .g_signal = rtrack_g_signal,
};
-static const struct v4l2_ioctl_ops rtrack_ioctl_ops = {
- .vidioc_querycap = vidioc_querycap,
- .vidioc_g_tuner = vidioc_g_tuner,
- .vidioc_s_tuner = vidioc_s_tuner,
- .vidioc_g_audio = vidioc_g_audio,
- .vidioc_s_audio = vidioc_s_audio,
- .vidioc_g_input = vidioc_g_input,
- .vidioc_s_input = vidioc_s_input,
- .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,
+static const int rtrack_ioports[] = { 0x20f, 0x30f };
+
+static struct radio_isa_driver rtrack_driver = {
+ .driver = {
+ .match = radio_isa_match,
+ .probe = radio_isa_probe,
+ .remove = radio_isa_remove,
+ .driver = {
+ .name = "radio-aimslab",
+ },
+ },
+ .io_params = io,
+ .radio_nr_params = radio_nr,
+ .io_ports = rtrack_ioports,
+ .num_of_io_ports = ARRAY_SIZE(rtrack_ioports),
+ .region_size = 2,
+ .card = "AIMSlab RadioTrack/RadioReveal",
+ .ops = &rtrack_ops,
+ .has_stereo = true,
+ .max_volume = 0xff,
};
static int __init rtrack_init(void)
{
- struct rtrack *rt = &rtrack_card;
- struct v4l2_device *v4l2_dev = &rt->v4l2_dev;
- int res;
-
- strlcpy(v4l2_dev->name, "rtrack", sizeof(v4l2_dev->name));
- rt->io = io;
-
- if (rt->io == -1) {
- v4l2_err(v4l2_dev, "you must set an I/O address with io=0x20f or 0x30f\n");
- return -EINVAL;
- }
-
- if (!request_region(rt->io, 2, "rtrack")) {
- v4l2_err(v4l2_dev, "port 0x%x already in use\n", rt->io);
- return -EBUSY;
- }
-
- res = v4l2_device_register(NULL, v4l2_dev);
- if (res < 0) {
- release_region(rt->io, 2);
- v4l2_err(v4l2_dev, "could not register v4l2_device\n");
- return res;
- }
-
- strlcpy(rt->vdev.name, v4l2_dev->name, sizeof(rt->vdev.name));
- rt->vdev.v4l2_dev = v4l2_dev;
- rt->vdev.fops = &rtrack_fops;
- rt->vdev.ioctl_ops = &rtrack_ioctl_ops;
- rt->vdev.release = video_device_release_empty;
- video_set_drvdata(&rt->vdev, rt);
-
- /* Set up the I/O locking */
-
- mutex_init(&rt->lock);
-
- /* mute card - prevents noisy bootups */
-
- /* this ensures that the volume is all the way down */
- outb(0x48, rt->io); /* volume down but still "on" */
- msleep(2000); /* make sure it's totally down */
- outb(0xc0, rt->io); /* steady volume, mute card */
-
- if (video_register_device(&rt->vdev, VFL_TYPE_RADIO, radio_nr) < 0) {
- v4l2_device_unregister(&rt->v4l2_dev);
- release_region(rt->io, 2);
- return -EINVAL;
- }
- v4l2_info(v4l2_dev, "AIMSlab RadioTrack/RadioReveal card driver.\n");
-
- return 0;
+ return isa_register_driver(&rtrack_driver.driver, RTRACK_MAX);
}
static void __exit rtrack_exit(void)
{
- struct rtrack *rt = &rtrack_card;
-
- video_unregister_device(&rt->vdev);
- v4l2_device_unregister(&rt->v4l2_dev);
- release_region(rt->io, 2);
+ isa_unregister_driver(&rtrack_driver.driver);
}
module_init(rtrack_init);
module_exit(rtrack_exit);
-
projects / platform / kernel / linux-rpi.git / commitdiff