-/* zoltrix radio plus driver for Linux radio support
- * (c) 1998 C. van Schaik <carl@leg.uct.ac.za>
+/*
+ * Zoltrix Radio Plus driver
+ * Copyright 1998 C. van Schaik <carl@leg.uct.ac.za>
*
* BUGS
* Due to the inconsistency in reading from the signal flags
*
* 2006-07-24 - Converted to V4L2 API
* by Mauro Carvalho Chehab <mchehab@infradead.org>
+ *
+ * Converted to the radio-isa framework by Hans Verkuil <hans.verkuil@cisco.com>
+ *
+ * Note that this is the driver for the Zoltrix Radio Plus.
+ * This driver does not work for the Zoltrix Radio Plus 108 or the
+ * Zoltrix Radio Plus for Windows.
+ *
+ * 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 "radio-isa.h"
-MODULE_AUTHOR("C.van Schaik");
+MODULE_AUTHOR("C. van Schaik");
MODULE_DESCRIPTION("A driver for the Zoltrix Radio Plus.");
MODULE_LICENSE("GPL");
-MODULE_VERSION("0.0.3");
+MODULE_VERSION("0.1.99");
#ifndef CONFIG_RADIO_ZOLTRIX_PORT
#define CONFIG_RADIO_ZOLTRIX_PORT -1
#endif
-static int io = CONFIG_RADIO_ZOLTRIX_PORT;
-static int radio_nr = -1;
+#define ZOLTRIX_MAX 2
+
+static int io[ZOLTRIX_MAX] = { [0] = CONFIG_RADIO_ZOLTRIX_PORT,
+ [1 ... (ZOLTRIX_MAX - 1)] = -1 };
+static int radio_nr[ZOLTRIX_MAX] = { [0 ... (ZOLTRIX_MAX - 1)] = -1 };
-module_param(io, int, 0);
-MODULE_PARM_DESC(io, "I/O address of the Zoltrix Radio Plus (0x20c or 0x30c)");
-module_param(radio_nr, int, 0);
+module_param_array(io, int, NULL, 0444);
+MODULE_PARM_DESC(io, "I/O addresses of the Zoltrix Radio Plus card (0x20c or 0x30c)");
+module_param_array(radio_nr, int, NULL, 0444);
+MODULE_PARM_DESC(radio_nr, "Radio device numbers");
struct zoltrix {
- struct v4l2_device v4l2_dev;
- struct video_device vdev;
- int io;
+ struct radio_isa_card isa;
int curvol;
- unsigned long curfreq;
- int muted;
- unsigned int stereo;
- struct mutex lock;
+ bool muted;
};
-static struct zoltrix zoltrix_card;
+static struct radio_isa_card *zoltrix_alloc(void)
+{
+ struct zoltrix *zol = kzalloc(sizeof(*zol), GFP_KERNEL);
+
+ return zol ? &zol->isa : NULL;
+}
-static int zol_setvol(struct zoltrix *zol, int vol)
+static int zoltrix_s_mute_volume(struct radio_isa_card *isa, bool mute, int vol)
{
- zol->curvol = vol;
- if (zol->muted)
- return 0;
+ struct zoltrix *zol = container_of(isa, struct zoltrix, isa);
- mutex_lock(&zol->lock);
- if (vol == 0) {
- outb(0, zol->io);
- outb(0, zol->io);
- inb(zol->io + 3); /* Zoltrix needs to be read to confirm */
- mutex_unlock(&zol->lock);
+ zol->curvol = vol;
+ zol->muted = mute;
+ if (mute || vol == 0) {
+ outb(0, isa->io);
+ outb(0, isa->io);
+ inb(isa->io + 3); /* Zoltrix needs to be read to confirm */
return 0;
}
- outb(zol->curvol-1, zol->io);
+ outb(vol - 1, isa->io);
msleep(10);
- inb(zol->io + 2);
- mutex_unlock(&zol->lock);
+ inb(isa->io + 2);
return 0;
}
-static void zol_mute(struct zoltrix *zol)
-{
- zol->muted = 1;
- mutex_lock(&zol->lock);
- outb(0, zol->io);
- outb(0, zol->io);
- inb(zol->io + 3); /* Zoltrix needs to be read to confirm */
- mutex_unlock(&zol->lock);
-}
-
-static void zol_unmute(struct zoltrix *zol)
-{
- zol->muted = 0;
- zol_setvol(zol, zol->curvol);
-}
-
-static int zol_setfreq(struct zoltrix *zol, unsigned long freq)
+/* tunes the radio to the desired frequency */
+static int zoltrix_s_frequency(struct radio_isa_card *isa, u32 freq)
{
- /* tunes the radio to the desired frequency */
- struct v4l2_device *v4l2_dev = &zol->v4l2_dev;
+ struct zoltrix *zol = container_of(isa, struct zoltrix, isa);
+ struct v4l2_device *v4l2_dev = &isa->v4l2_dev;
unsigned long long bitmask, f, m;
- unsigned int stereo = zol->stereo;
+ bool stereo = isa->stereo;
int i;
if (freq == 0) {
bitmask = 0xc480402c10080000ull;
i = 45;
- mutex_lock(&zol->lock);
-
- zol->curfreq = freq;
-
- outb(0, zol->io);
- outb(0, zol->io);
- inb(zol->io + 3); /* Zoltrix needs to be read to confirm */
+ outb(0, isa->io);
+ outb(0, isa->io);
+ inb(isa->io + 3); /* Zoltrix needs to be read to confirm */
- outb(0x40, zol->io);
- outb(0xc0, zol->io);
+ outb(0x40, isa->io);
+ outb(0xc0, isa->io);
bitmask = (bitmask ^ ((f & 0xff) << 47) ^ ((f & 0xff00) << 30) ^ (stereo << 31));
while (i--) {
if ((bitmask & 0x8000000000000000ull) != 0) {
- outb(0x80, zol->io);
+ outb(0x80, isa->io);
udelay(50);
- outb(0x00, zol->io);
+ outb(0x00, isa->io);
udelay(50);
- outb(0x80, zol->io);
+ outb(0x80, isa->io);
udelay(50);
} else {
- outb(0xc0, zol->io);
+ outb(0xc0, isa->io);
udelay(50);
- outb(0x40, zol->io);
+ outb(0x40, isa->io);
udelay(50);
- outb(0xc0, zol->io);
+ outb(0xc0, isa->io);
udelay(50);
}
bitmask *= 2;
}
/* termination sequence */
- outb(0x80, zol->io);
- outb(0xc0, zol->io);
- outb(0x40, zol->io);
+ outb(0x80, isa->io);
+ outb(0xc0, isa->io);
+ outb(0x40, isa->io);
udelay(1000);
- inb(zol->io + 2);
-
+ inb(isa->io + 2);
udelay(1000);
- if (zol->muted) {
- outb(0, zol->io);
- outb(0, zol->io);
- inb(zol->io + 3);
- udelay(1000);
- }
-
- mutex_unlock(&zol->lock);
-
- if (!zol->muted)
- zol_setvol(zol, zol->curvol);
- return 0;
+ return zoltrix_s_mute_volume(isa, zol->muted, zol->curvol);
}
/* Get signal strength */
-static int zol_getsigstr(struct zoltrix *zol)
+static u32 zoltrix_g_rxsubchans(struct radio_isa_card *isa)
{
+ struct zoltrix *zol = container_of(isa, struct zoltrix, isa);
int a, b;
- mutex_lock(&zol->lock);
- outb(0x00, zol->io); /* This stuff I found to do nothing */
- outb(zol->curvol, zol->io);
+ outb(0x00, isa->io); /* This stuff I found to do nothing */
+ outb(zol->curvol, isa->io);
msleep(20);
- a = inb(zol->io);
+ a = inb(isa->io);
msleep(10);
- b = inb(zol->io);
+ b = inb(isa->io);
- mutex_unlock(&zol->lock);
-
- if (a != b)
- return 0;
-
- /* I found this out by playing with a binary scanner on the card io */
- return a == 0xcf || a == 0xdf || a == 0xef;
+ return (a == b && a == 0xcf) ?
+ V4L2_TUNER_SUB_STEREO : V4L2_TUNER_SUB_MONO;
}
-static int zol_is_stereo(struct zoltrix *zol)
+static u32 zoltrix_g_signal(struct radio_isa_card *isa)
{
- int x1, x2;
-
- mutex_lock(&zol->lock);
+ struct zoltrix *zol = container_of(isa, struct zoltrix, isa);
+ int a, b;
- outb(0x00, zol->io);
- outb(zol->curvol, zol->io);
+ outb(0x00, isa->io); /* This stuff I found to do nothing */
+ outb(zol->curvol, isa->io);
msleep(20);
- x1 = inb(zol->io);
+ a = inb(isa->io);
msleep(10);
- x2 = inb(zol->io);
-
- mutex_unlock(&zol->lock);
-
- return x1 == x2 && x1 == 0xcf;
-}
-
-static int vidioc_querycap(struct file *file, void *priv,
- struct v4l2_capability *v)
-{
- strlcpy(v->driver, "radio-zoltrix", sizeof(v->driver));
- strlcpy(v->card, "Zoltrix Radio", 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 zoltrix *zol = video_drvdata(file);
-
- if (v->index > 0)
- return -EINVAL;
-
- strlcpy(v->name, "FM", sizeof(v->name));
- v->type = V4L2_TUNER_RADIO;
- v->rangelow = 88 * 16000;
- v->rangehigh = 108 * 16000;
- v->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
- v->capability = V4L2_TUNER_CAP_LOW;
- if (zol_is_stereo(zol))
- v->audmode = V4L2_TUNER_MODE_STEREO;
- else
- v->audmode = V4L2_TUNER_MODE_MONO;
- v->signal = 0xFFFF * zol_getsigstr(zol);
- 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 zoltrix *zol = video_drvdata(file);
-
- if (f->tuner != 0 || f->type != V4L2_TUNER_RADIO)
- return -EINVAL;
- if (zol_setfreq(zol, f->frequency) != 0)
- return -EINVAL;
- return 0;
-}
-
-static int vidioc_g_frequency(struct file *file, void *priv,
- struct v4l2_frequency *f)
-{
- struct zoltrix *zol = video_drvdata(file);
+ b = inb(isa->io);
- if (f->tuner != 0)
- return -EINVAL;
- f->type = V4L2_TUNER_RADIO;
- f->frequency = zol->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);
- case V4L2_CID_AUDIO_VOLUME:
- return v4l2_ctrl_query_fill(qc, 0, 65535, 4096, 65535);
- }
- return -EINVAL;
-}
-
-static int vidioc_g_ctrl(struct file *file, void *priv,
- struct v4l2_control *ctrl)
-{
- struct zoltrix *zol = video_drvdata(file);
-
- switch (ctrl->id) {
- case V4L2_CID_AUDIO_MUTE:
- ctrl->value = zol->muted;
- return 0;
- case V4L2_CID_AUDIO_VOLUME:
- ctrl->value = zol->curvol * 4096;
- return 0;
- }
- return -EINVAL;
-}
-
-static int vidioc_s_ctrl(struct file *file, void *priv,
- struct v4l2_control *ctrl)
-{
- struct zoltrix *zol = video_drvdata(file);
-
- switch (ctrl->id) {
- case V4L2_CID_AUDIO_MUTE:
- if (ctrl->value)
- zol_mute(zol);
- else {
- zol_unmute(zol);
- zol_setvol(zol, zol->curvol);
- }
- return 0;
- case V4L2_CID_AUDIO_VOLUME:
- zol_setvol(zol, ctrl->value / 4096);
+ if (a != b)
return 0;
- }
- zol->stereo = 1;
- if (zol_setfreq(zol, zol->curfreq) != 0)
- return -EINVAL;
-#if 0
-/* FIXME: Implement stereo/mono switch on V4L2 */
- if (v->mode & VIDEO_SOUND_STEREO) {
- zol->stereo = 1;
- zol_setfreq(zol, zol->curfreq);
- }
- if (v->mode & VIDEO_SOUND_MONO) {
- zol->stereo = 0;
- zol_setfreq(zol, zol->curfreq);
- }
-#endif
- return -EINVAL;
-}
-
-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_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;
- return 0;
+ /* I found this out by playing with a binary scanner on the card io */
+ return (a == 0xcf || a == 0xdf || a == 0xef) ? 0xffff : 0;
}
-static int vidioc_s_audio(struct file *file, void *priv,
- struct v4l2_audio *a)
+static int zoltrix_s_stereo(struct radio_isa_card *isa, bool stereo)
{
- return a->index ? -EINVAL : 0;
+ return zoltrix_s_frequency(isa, isa->freq);
}
-static const struct v4l2_file_operations zoltrix_fops =
-{
- .owner = THIS_MODULE,
- .unlocked_ioctl = video_ioctl2,
+static const struct radio_isa_ops zoltrix_ops = {
+ .alloc = zoltrix_alloc,
+ .s_mute_volume = zoltrix_s_mute_volume,
+ .s_frequency = zoltrix_s_frequency,
+ .s_stereo = zoltrix_s_stereo,
+ .g_rxsubchans = zoltrix_g_rxsubchans,
+ .g_signal = zoltrix_g_signal,
};
-static const struct v4l2_ioctl_ops zoltrix_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 zoltrix_ioports[] = { 0x20c, 0x30c };
+
+static struct radio_isa_driver zoltrix_driver = {
+ .driver = {
+ .match = radio_isa_match,
+ .probe = radio_isa_probe,
+ .remove = radio_isa_remove,
+ .driver = {
+ .name = "radio-zoltrix",
+ },
+ },
+ .io_params = io,
+ .radio_nr_params = radio_nr,
+ .io_ports = zoltrix_ioports,
+ .num_of_io_ports = ARRAY_SIZE(zoltrix_ioports),
+ .region_size = 2,
+ .card = "Zoltrix Radio Plus",
+ .ops = &zoltrix_ops,
+ .has_stereo = true,
+ .max_volume = 15,
};
static int __init zoltrix_init(void)
{
- struct zoltrix *zol = &zoltrix_card;
- struct v4l2_device *v4l2_dev = &zol->v4l2_dev;
- int res;
-
- strlcpy(v4l2_dev->name, "zoltrix", sizeof(v4l2_dev->name));
- zol->io = io;
- if (zol->io == -1) {
- v4l2_err(v4l2_dev, "You must set an I/O address with io=0x20c or 0x30c\n");
- return -EINVAL;
- }
- if (zol->io != 0x20c && zol->io != 0x30c) {
- v4l2_err(v4l2_dev, "invalid port, try 0x20c or 0x30c\n");
- return -ENXIO;
- }
-
- if (!request_region(zol->io, 2, "zoltrix")) {
- v4l2_err(v4l2_dev, "port 0x%x already in use\n", zol->io);
- return -EBUSY;
- }
-
- res = v4l2_device_register(NULL, v4l2_dev);
- if (res < 0) {
- release_region(zol->io, 2);
- v4l2_err(v4l2_dev, "Could not register v4l2_device\n");
- return res;
- }
-
- mutex_init(&zol->lock);
-
- /* mute card - prevents noisy bootups */
-
- /* this ensures that the volume is all the way down */
-
- outb(0, zol->io);
- outb(0, zol->io);
- msleep(20);
- inb(zol->io + 3);
-
- zol->curvol = 0;
- zol->stereo = 1;
-
- strlcpy(zol->vdev.name, v4l2_dev->name, sizeof(zol->vdev.name));
- zol->vdev.v4l2_dev = v4l2_dev;
- zol->vdev.fops = &zoltrix_fops;
- zol->vdev.ioctl_ops = &zoltrix_ioctl_ops;
- zol->vdev.release = video_device_release_empty;
- video_set_drvdata(&zol->vdev, zol);
-
- if (video_register_device(&zol->vdev, VFL_TYPE_RADIO, radio_nr) < 0) {
- v4l2_device_unregister(v4l2_dev);
- release_region(zol->io, 2);
- return -EINVAL;
- }
- v4l2_info(v4l2_dev, "Zoltrix Radio Plus card driver.\n");
-
- return 0;
+ return isa_register_driver(&zoltrix_driver.driver, ZOLTRIX_MAX);
}
static void __exit zoltrix_exit(void)
{
- struct zoltrix *zol = &zoltrix_card;
-
- video_unregister_device(&zol->vdev);
- v4l2_device_unregister(&zol->v4l2_dev);
- release_region(zol->io, 2);
+ isa_unregister_driver(&zoltrix_driver.driver);
}
module_init(zoltrix_init);
projects / GitHub / LineageOS / G12 / android_kernel_amlogic_linux-4.9.git / commitdiff