aboutsummaryrefslogtreecommitdiff
path: root/drivers/media/radio/radio-aimslab.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/media/radio/radio-aimslab.c')
-rw-r--r--drivers/media/radio/radio-aimslab.c505
1 files changed, 116 insertions, 389 deletions
diff --git a/drivers/media/radio/radio-aimslab.c b/drivers/media/radio/radio-aimslab.c
index eba9209b302..a739ad492e7 100644
--- a/drivers/media/radio/radio-aimslab.c
+++ b/drivers/media/radio/radio-aimslab.c
@@ -1,15 +1,12 @@
-/* radiotrack (radioreveal) driver for Linux radio support
- * (c) 1997 M. Kirkwood
- * Converted to V4L2 API by Mauro Carvalho Chehab <mchehab@infradead.org>
- * Converted to new API by Alan Cox <Alan.Cox@linux.org>
- * Various bugfixes and enhancements by Russell Kroll <rkroll@exploits.org>
+/*
+ * AimsLab RadioTrack (aka RadioVeveal) driver
*
- * History:
- * 1999-02-24 Russell Kroll <rkroll@exploits.org>
- * Fine tuning/VIDEO_TUNER_LOW
- * Frequency range expanded to start at 87 MHz
+ * Copyright 1997 M. Kirkwood
*
- * TODO: Allow for more than one of these foolish entities :-)
+ * 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>
*
* Notes on the hardware (reverse engineered from other peoples'
* reverse engineering of AIMS' code :-)
@@ -26,442 +23,172 @@
* 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/init.h> /* Initdata */
#include <linux/ioport.h> /* request_region */
-#include <linux/delay.h> /* udelay */
-#include <asm/io.h> /* outb, outb_p */
-#include <asm/uaccess.h> /* copy to/from user */
+#include <linux/delay.h> /* msleep */
#include <linux/videodev2.h> /* kernel radio structs */
-#include <media/v4l2-common.h>
+#include <linux/io.h> /* outb, outb_p */
+#include <linux/slab.h>
+#include <media/v4l2-device.h>
#include <media/v4l2-ioctl.h>
+#include <media/v4l2-ctrls.h>
+#include "radio-isa.h"
+#include "lm7000.h"
-#include <linux/version.h> /* for KERNEL_VERSION MACRO */
-#define RADIO_VERSION KERNEL_VERSION(0,0,2)
+MODULE_AUTHOR("M. Kirkwood");
+MODULE_DESCRIPTION("A driver for the RadioTrack/RadioReveal radio card.");
+MODULE_LICENSE("GPL");
+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;
-static struct mutex lock;
-
-struct rt_device
-{
- int port;
- int curvol;
- unsigned long curfreq;
- int muted;
-};
-
-
-/* local things */
+#define RTRACK_MAX 2
-static void sleep_delay(long n)
-{
- /* Sleep nicely for 'n' uS */
- int d=n/msecs_to_jiffies(1000);
- if(!d)
- udelay(n);
- else
- msleep(jiffies_to_msecs(d));
-}
+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 };
-static void rt_decvol(void)
-{
- outb(0x58, io); /* volume down + sigstr + on */
- sleep_delay(100000);
- outb(0xd8, io); /* volume steady + sigstr + on */
-}
-
-static void rt_incvol(void)
-{
- outb(0x98, io); /* volume up + sigstr + on */
- sleep_delay(100000);
- outb(0xd8, io); /* volume steady + sigstr + on */
-}
-
-static void rt_mute(struct rt_device *dev)
-{
- dev->muted = 1;
- mutex_lock(&lock);
- outb(0xd0, io); /* volume steady, off */
- mutex_unlock(&lock);
-}
-
-static int rt_setvol(struct rt_device *dev, int vol)
-{
- int i;
-
- mutex_lock(&lock);
-
- if(vol == dev->curvol) { /* requested volume = current */
- if (dev->muted) { /* user is unmuting the card */
- dev->muted = 0;
- outb (0xd8, io); /* enable card */
- }
- mutex_unlock(&lock);
- return 0;
- }
-
- if(vol == 0) { /* volume = 0 means mute the card */
- outb(0x48, io); /* volume down but still "on" */
- sleep_delay(2000000); /* make sure it's totally down */
- outb(0xd0, io); /* volume steady, off */
- dev->curvol = 0; /* track the volume state! */
- mutex_unlock(&lock);
- return 0;
- }
+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");
- dev->muted = 0;
- if(vol > dev->curvol)
- for(i = dev->curvol; i < vol; i++)
- rt_incvol();
- else
- for(i = dev->curvol; i > vol; i--)
- rt_decvol();
-
- dev->curvol = vol;
- mutex_unlock(&lock);
- return 0;
-}
-
-/* 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(int port, struct rt_device *dev)
-{
- if ((dev->curvol == 0) || (dev->muted)) {
- outb_p(128+64+16+ 1, port); /* wr-enable + data low */
- outb_p(128+64+16+2+1, port); /* clock */
- }
- else {
- outb_p(128+64+16+8+ 1, port); /* on + wr-enable + data low */
- outb_p(128+64+16+8+2+1, port); /* clock */
- }
- sleep_delay(1000);
-}
-
-static void send_1_byte(int port, struct rt_device *dev)
-{
- if ((dev->curvol == 0) || (dev->muted)) {
- outb_p(128+64+16+4 +1, port); /* wr-enable+data high */
- outb_p(128+64+16+4+2+1, port); /* clock */
- }
- else {
- outb_p(128+64+16+8+4 +1, port); /* on+wr-enable+data high */
- outb_p(128+64+16+8+4+2+1, port); /* clock */
- }
-
- sleep_delay(1000);
-}
+struct rtrack {
+ struct radio_isa_card isa;
+ int curvol;
+};
-static int rt_setfreq(struct rt_device *dev, unsigned long freq)
+static struct radio_isa_card *rtrack_alloc(void)
{
- int i;
-
- /* adapted from radio-aztech.c */
-
- /* now uses VIDEO_TUNER_LOW for fine tuning */
-
- freq += 171200; /* Add 10.7 MHz IF */
- freq /= 800; /* Convert to 50 kHz units */
-
- mutex_lock(&lock); /* Stop other ops interfering */
-
- send_0_byte (io, dev); /* 0: LSB of frequency */
-
- for (i = 0; i < 13; i++) /* : frequency bits (1-13) */
- if (freq & (1 << i))
- send_1_byte (io, dev);
- else
- send_0_byte (io, dev);
-
- send_0_byte (io, dev); /* 14: test bit - always 0 */
- send_0_byte (io, dev); /* 15: test bit - always 0 */
-
- send_0_byte (io, dev); /* 16: band data 0 - always 0 */
- send_0_byte (io, dev); /* 17: band data 1 - always 0 */
- send_0_byte (io, dev); /* 18: band data 2 - always 0 */
- send_0_byte (io, dev); /* 19: time base - always 0 */
-
- send_0_byte (io, dev); /* 20: spacing (0 = 25 kHz) */
- send_1_byte (io, dev); /* 21: spacing (1 = 25 kHz) */
- send_0_byte (io, dev); /* 22: spacing (0 = 25 kHz) */
- send_1_byte (io, dev); /* 23: AM/FM (FM = 1, always) */
-
- if ((dev->curvol == 0) || (dev->muted))
- outb (0xd0, io); /* volume steady + sigstr */
- else
- outb (0xd8, io); /* volume steady + sigstr + on */
-
- mutex_unlock(&lock);
-
- return 0;
-}
+ struct rtrack *rt = kzalloc(sizeof(struct rtrack), GFP_KERNEL);
-static int rt_getsigstr(struct rt_device *dev)
-{
- if (inb(io) & 2) /* bit set = no signal present */
- return 0;
- return 1; /* signal present */
+ if (rt)
+ rt->curvol = 0xff;
+ return rt ? &rt->isa : NULL;
}
-static struct v4l2_queryctrl radio_qctrl[] = {
- {
- .id = V4L2_CID_AUDIO_MUTE,
- .name = "Mute",
- .minimum = 0,
- .maximum = 1,
- .default_value = 1,
- .type = V4L2_CTRL_TYPE_BOOLEAN,
- },{
- .id = V4L2_CID_AUDIO_VOLUME,
- .name = "Volume",
- .minimum = 0,
- .maximum = 0xff,
- .step = 1,
- .default_value = 0xff,
- .type = V4L2_CTRL_TYPE_INTEGER,
- }
-};
-
-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));
- sprintf(v->bus_info, "ISA");
- v->version = RADIO_VERSION;
- v->capabilities = V4L2_CAP_TUNER;
- return 0;
-}
+#define AIMS_BIT_TUN_CE (1 << 0)
+#define AIMS_BIT_TUN_CLK (1 << 1)
+#define AIMS_BIT_TUN_DATA (1 << 2)
+#define AIMS_BIT_VOL_CE (1 << 3)
+#define AIMS_BIT_TUN_STRQ (1 << 4)
+/* bit 5 is not connected */
+#define AIMS_BIT_VOL_UP (1 << 6) /* active low */
+#define AIMS_BIT_VOL_DN (1 << 7) /* active low */
-static int vidioc_g_tuner(struct file *file, void *priv,
- struct v4l2_tuner *v)
+static void rtrack_set_pins(void *handle, u8 pins)
{
- struct video_device *dev = video_devdata(file);
- struct rt_device *rt = dev->priv;
+ struct radio_isa_card *isa = handle;
+ struct rtrack *rt = container_of(isa, struct rtrack, isa);
+ u8 bits = AIMS_BIT_VOL_DN | AIMS_BIT_VOL_UP | AIMS_BIT_TUN_STRQ;
- if (v->index > 0)
- return -EINVAL;
+ if (!v4l2_ctrl_g_ctrl(rt->isa.mute))
+ bits |= AIMS_BIT_VOL_CE;
- strcpy(v->name, "FM");
- 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;
-}
+ if (pins & LM7000_DATA)
+ bits |= AIMS_BIT_TUN_DATA;
+ if (pins & LM7000_CLK)
+ bits |= AIMS_BIT_TUN_CLK;
+ if (pins & LM7000_CE)
+ bits |= AIMS_BIT_TUN_CE;
-static int vidioc_s_tuner(struct file *file, void *priv,
- struct v4l2_tuner *v)
-{
- if (v->index > 0)
- return -EINVAL;
- return 0;
+ outb_p(bits, rt->isa.io);
}
-static int vidioc_s_frequency(struct file *file, void *priv,
- struct v4l2_frequency *f)
+static int rtrack_s_frequency(struct radio_isa_card *isa, u32 freq)
{
- struct video_device *dev = video_devdata(file);
- struct rt_device *rt = dev->priv;
+ lm7000_set_freq(freq, isa, rtrack_set_pins);
- rt->curfreq = f->frequency;
- rt_setfreq(rt, rt->curfreq);
return 0;
}
-static int vidioc_g_frequency(struct file *file, void *priv,
- struct v4l2_frequency *f)
+static u32 rtrack_g_signal(struct radio_isa_card *isa)
{
- struct video_device *dev = video_devdata(file);
- struct rt_device *rt = dev->priv;
-
- f->type = V4L2_TUNER_RADIO;
- f->frequency = rt->curfreq;
- return 0;
+ /* bit set = no signal present */
+ return 0xffff * !(inb(isa->io) & 2);
}
-static int vidioc_queryctrl(struct file *file, void *priv,
- struct v4l2_queryctrl *qc)
+static int rtrack_s_mute_volume(struct radio_isa_card *isa, bool mute, int vol)
{
- int i;
+ struct rtrack *rt = container_of(isa, struct rtrack, isa);
+ int curvol = rt->curvol;
- for (i = 0; i < ARRAY_SIZE(radio_qctrl); i++) {
- if (qc->id && qc->id == radio_qctrl[i].id) {
- memcpy(qc, &(radio_qctrl[i]),
- sizeof(*qc));
- return 0;
- }
- }
- return -EINVAL;
-}
-
-static int vidioc_g_ctrl(struct file *file, void *priv,
- struct v4l2_control *ctrl)
-{
- struct video_device *dev = video_devdata(file);
- struct rt_device *rt = dev->priv;
-
- switch (ctrl->id) {
- case V4L2_CID_AUDIO_MUTE:
- ctrl->value = rt->muted;
- return 0;
- case V4L2_CID_AUDIO_VOLUME:
- ctrl->value = rt->curvol * 6554;
+ 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 video_device *dev = video_devdata(file);
- struct rt_device *rt = dev->priv;
-
- 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_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;
+ 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)
{
- if (i != 0)
- return -EINVAL;
+ /* 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)
-{
- if (a->index != 0)
- return -EINVAL;
- return 0;
-}
-
-static struct rt_device rtrack_unit;
-
-static const struct file_operations rtrack_fops = {
- .owner = THIS_MODULE,
- .open = video_exclusive_open,
- .release = video_exclusive_release,
- .ioctl = video_ioctl2,
-#ifdef CONFIG_COMPAT
- .compat_ioctl = v4l_compat_ioctl32,
-#endif
- .llseek = no_llseek,
+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 struct video_device rtrack_radio = {
- .name = "RadioTrack radio",
- .fops = &rtrack_fops,
- .ioctl_ops = &rtrack_ioctl_ops,
+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)
{
- if(io==-1)
- {
- printk(KERN_ERR "You must set an I/O address with io=0x???\n");
- return -EINVAL;
- }
-
- if (!request_region(io, 2, "rtrack"))
- {
- printk(KERN_ERR "rtrack: port 0x%x already in use\n", io);
- return -EBUSY;
- }
-
- rtrack_radio.priv=&rtrack_unit;
-
- if(video_register_device(&rtrack_radio, VFL_TYPE_RADIO, radio_nr)==-1)
- {
- release_region(io, 2);
- return -EINVAL;
- }
- printk(KERN_INFO "AIMSlab RadioTrack/RadioReveal card driver.\n");
-
- /* Set up the I/O locking */
-
- mutex_init(&lock);
-
- /* mute card - prevents noisy bootups */
-
- /* this ensures that the volume is all the way down */
- outb(0x48, io); /* volume down but still "on" */
- sleep_delay(2000000); /* make sure it's totally down */
- outb(0xc0, io); /* steady volume, mute card */
- rtrack_unit.curvol = 0;
-
- return 0;
+ return isa_register_driver(&rtrack_driver.driver, RTRACK_MAX);
}
-MODULE_AUTHOR("M.Kirkwood");
-MODULE_DESCRIPTION("A driver for the RadioTrack/RadioReveal radio card.");
-MODULE_LICENSE("GPL");
-
-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 void __exit cleanup_rtrack_module(void)
+static void __exit rtrack_exit(void)
{
- video_unregister_device(&rtrack_radio);
- release_region(io,2);
+ isa_unregister_driver(&rtrack_driver.driver);
}
module_init(rtrack_init);
-module_exit(cleanup_rtrack_module);
-
+module_exit(rtrack_exit);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-09 07:00:24 +0000