* Frequency control is done digitally -- ie out(port,encodefreq(95.8));
* Volume Control is done digitally
*
- * there is a I2C controlled RDS decoder (SAA6588) onboard, which i would like to support someday
- * (as soon i have understand how to get started :)
- * If you can help me out with that, please contact me!!
- *
- *
+ * Converted to the radio-isa framework by Hans Verkuil <hans.verkuil@cisco.com>
* Converted to V4L2 API by Mauro Carvalho Chehab <mchehab@infradead.org>
*/
#include <linux/io.h> /* outb, outb_p */
#include <media/v4l2-device.h>
#include <media/v4l2-ioctl.h>
+#include "radio-isa.h"
-MODULE_AUTHOR("R.OFFERMANNS & others");
+MODULE_AUTHOR("R. Offermans & others");
MODULE_DESCRIPTION("A driver for the TerraTec ActiveRadio Standalone radio card.");
MODULE_LICENSE("GPL");
-MODULE_VERSION("0.0.3");
-
-#ifndef CONFIG_RADIO_TERRATEC_PORT
-#define CONFIG_RADIO_TERRATEC_PORT 0x590
-#endif
+MODULE_VERSION("0.1.99");
-static int io = CONFIG_RADIO_TERRATEC_PORT;
+/* Note: there seems to be only one possible port (0x590), but without
+ hardware this is hard to verify. For now, this is the only one we will
+ support. */
+static int io = 0x590;
static int radio_nr = -1;
-module_param(io, int, 0);
-MODULE_PARM_DESC(io, "I/O address of the TerraTec ActiveRadio card (0x590 or 0x591)");
-module_param(radio_nr, int, 0);
-
-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,
- }
-};
+module_param(radio_nr, int, 0444);
+MODULE_PARM_DESC(radio_nr, "Radio device number");
#define WRT_DIS 0x00
#define CLK_OFF 0x00
#define CLK_ON 0x08
#define WRT_EN 0x10
-struct terratec
+static struct radio_isa_card *terratec_alloc(void)
{
- struct v4l2_device v4l2_dev;
- struct video_device vdev;
- int io;
- int curvol;
- unsigned long curfreq;
- int muted;
- struct mutex lock;
-};
-
-static struct terratec terratec_card;
-
-/* local things */
+ return kzalloc(sizeof(struct radio_isa_card), GFP_KERNEL);
+}
-static void tt_write_vol(struct terratec *tt, int volume)
+static int terratec_s_mute_volume(struct radio_isa_card *isa, bool mute, int vol)
{
int i;
- volume = volume + (volume * 32); /* change both channels */
- mutex_lock(&tt->lock);
+ if (mute)
+ vol = 0;
+ vol = vol + (vol * 32); /* change both channels */
for (i = 0; i < 8; i++) {
- if (volume & (0x80 >> i))
- outb(0x80, tt->io + 1);
+ if (vol & (0x80 >> i))
+ outb(0x80, isa->io + 1);
else
- outb(0x00, tt->io + 1);
- }
- mutex_unlock(&tt->lock);
-}
-
-
-
-static void tt_mute(struct terratec *tt)
-{
- tt->muted = 1;
- tt_write_vol(tt, 0);
-}
-
-static int tt_setvol(struct terratec *tt, int vol)
-{
- if (vol == tt->curvol) { /* requested volume = current */
- if (tt->muted) { /* user is unmuting the card */
- tt->muted = 0;
- tt_write_vol(tt, vol); /* enable card */
- }
- return 0;
- }
-
- if (vol == 0) { /* volume = 0 means mute the card */
- tt_write_vol(tt, 0); /* "turn off card" by setting vol to 0 */
- tt->curvol = vol; /* track the volume state! */
- return 0;
+ outb(0x00, isa->io + 1);
}
-
- tt->muted = 0;
- tt_write_vol(tt, vol);
- tt->curvol = vol;
return 0;
}
/* this is the worst part in this driver */
/* many more or less strange things are going on here, but hey, it works :) */
-static int tt_setfreq(struct terratec *tt, unsigned long freq1)
+static int terratec_s_frequency(struct radio_isa_card *isa, u32 freq)
{
- int freq;
int i;
int p;
- int temp;
+ int temp;
long rest;
unsigned char buffer[25]; /* we have to bit shift 25 registers */
- mutex_lock(&tt->lock);
-
- tt->curfreq = freq1;
-
- freq = freq1 / 160; /* convert the freq. to a nice to handle value */
+ freq = freq / 160; /* convert the freq. to a nice to handle value */
memset(buffer, 0, sizeof(buffer));
rest = freq * 10 + 10700; /* I once had understood what is going on here */
for (i = 24; i > -1; i--) { /* bit shift the values to the radiocard */
if (buffer[i] == 1) {
- outb(WRT_EN | DATA, tt->io);
- outb(WRT_EN | DATA | CLK_ON, tt->io);
- outb(WRT_EN | DATA, tt->io);
+ outb(WRT_EN | DATA, isa->io);
+ outb(WRT_EN | DATA | CLK_ON, isa->io);
+ outb(WRT_EN | DATA, isa->io);
} else {
- outb(WRT_EN | 0x00, tt->io);
- outb(WRT_EN | 0x00 | CLK_ON, tt->io);
- }
- }
- outb(0x00, tt->io);
-
- mutex_unlock(&tt->lock);
-
- return 0;
-}
-
-static int tt_getsigstr(struct terratec *tt)
-{
- if (inb(tt->io) & 2) /* bit set = no signal present */
- return 0;
- return 1; /* signal present */
-}
-
-static int vidioc_querycap(struct file *file, void *priv,
- struct v4l2_capability *v)
-{
- strlcpy(v->driver, "radio-terratec", sizeof(v->driver));
- strlcpy(v->card, "ActiveRadio", 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 terratec *tt = video_drvdata(file);
-
- if (v->index > 0)
- return -EINVAL;
-
- 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 * tt_getsigstr(tt);
- 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 terratec *tt = video_drvdata(file);
-
- if (f->tuner != 0 || f->type != V4L2_TUNER_RADIO)
- return -EINVAL;
- tt_setfreq(tt, f->frequency);
- return 0;
-}
-
-static int vidioc_g_frequency(struct file *file, void *priv,
- struct v4l2_frequency *f)
-{
- struct terratec *tt = video_drvdata(file);
-
- if (f->tuner != 0)
- return -EINVAL;
- f->type = V4L2_TUNER_RADIO;
- f->frequency = tt->curfreq;
- return 0;
-}
-
-static int vidioc_queryctrl(struct file *file, void *priv,
- struct v4l2_queryctrl *qc)
-{
- int i;
-
- 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;
+ outb(WRT_EN | 0x00, isa->io);
+ outb(WRT_EN | 0x00 | CLK_ON, isa->io);
}
}
- return -EINVAL;
-}
-
-static int vidioc_g_ctrl(struct file *file, void *priv,
- struct v4l2_control *ctrl)
-{
- struct terratec *tt = video_drvdata(file);
-
- switch (ctrl->id) {
- case V4L2_CID_AUDIO_MUTE:
- if (tt->muted)
- ctrl->value = 1;
- else
- ctrl->value = 0;
- return 0;
- case V4L2_CID_AUDIO_VOLUME:
- ctrl->value = tt->curvol * 6554;
- return 0;
- }
- return -EINVAL;
-}
-
-static int vidioc_s_ctrl(struct file *file, void *priv,
- struct v4l2_control *ctrl)
-{
- struct terratec *tt = video_drvdata(file);
-
- switch (ctrl->id) {
- case V4L2_CID_AUDIO_MUTE:
- if (ctrl->value)
- tt_mute(tt);
- else
- tt_setvol(tt,tt->curvol);
- return 0;
- case V4L2_CID_AUDIO_VOLUME:
- tt_setvol(tt,ctrl->value);
- return 0;
- }
- 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;
+ outb(0x00, isa->io);
return 0;
}
-static int vidioc_s_audio(struct file *file, void *priv,
- struct v4l2_audio *a)
+static u32 terratec_g_signal(struct radio_isa_card *isa)
{
- return a->index ? -EINVAL : 0;
+ /* bit set = no signal present */
+ return (inb(isa->io) & 2) ? 0 : 0xffff;
}
-static const struct v4l2_file_operations terratec_fops = {
- .owner = THIS_MODULE,
- .unlocked_ioctl = video_ioctl2,
+static const struct radio_isa_ops terratec_ops = {
+ .alloc = terratec_alloc,
+ .s_mute_volume = terratec_s_mute_volume,
+ .s_frequency = terratec_s_frequency,
+ .g_signal = terratec_g_signal,
};
-static const struct v4l2_ioctl_ops terratec_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,
+static const int terratec_ioports[] = { 0x590 };
+
+static struct radio_isa_driver terratec_driver = {
+ .driver = {
+ .match = radio_isa_match,
+ .probe = radio_isa_probe,
+ .remove = radio_isa_remove,
+ .driver = {
+ .name = "radio-terratec",
+ },
+ },
+ .io_params = &io,
+ .radio_nr_params = &radio_nr,
+ .io_ports = terratec_ioports,
+ .num_of_io_ports = ARRAY_SIZE(terratec_ioports),
+ .region_size = 2,
+ .card = "TerraTec ActiveRadio",
+ .ops = &terratec_ops,
+ .has_stereo = true,
+ .max_volume = 10,
};
static int __init terratec_init(void)
{
- struct terratec *tt = &terratec_card;
- struct v4l2_device *v4l2_dev = &tt->v4l2_dev;
- int res;
-
- strlcpy(v4l2_dev->name, "terratec", sizeof(v4l2_dev->name));
- tt->io = io;
- if (tt->io == -1) {
- v4l2_err(v4l2_dev, "you must set an I/O address with io=0x590 or 0x591\n");
- return -EINVAL;
- }
- if (!request_region(tt->io, 2, "terratec")) {
- v4l2_err(v4l2_dev, "port 0x%x already in use\n", io);
- return -EBUSY;
- }
-
- res = v4l2_device_register(NULL, v4l2_dev);
- if (res < 0) {
- release_region(tt->io, 2);
- v4l2_err(v4l2_dev, "Could not register v4l2_device\n");
- return res;
- }
-
- strlcpy(tt->vdev.name, v4l2_dev->name, sizeof(tt->vdev.name));
- tt->vdev.v4l2_dev = v4l2_dev;
- tt->vdev.fops = &terratec_fops;
- tt->vdev.ioctl_ops = &terratec_ioctl_ops;
- tt->vdev.release = video_device_release_empty;
- video_set_drvdata(&tt->vdev, tt);
-
- mutex_init(&tt->lock);
-
- /* mute card - prevents noisy bootups */
- tt_write_vol(tt, 0);
-
- if (video_register_device(&tt->vdev, VFL_TYPE_RADIO, radio_nr) < 0) {
- v4l2_device_unregister(&tt->v4l2_dev);
- release_region(tt->io, 2);
- return -EINVAL;
- }
-
- v4l2_info(v4l2_dev, "TERRATEC ActivRadio Standalone card driver.\n");
- return 0;
+ return isa_register_driver(&terratec_driver.driver, 1);
}
static void __exit terratec_exit(void)
{
- struct terratec *tt = &terratec_card;
- struct v4l2_device *v4l2_dev = &tt->v4l2_dev;
-
- video_unregister_device(&tt->vdev);
- v4l2_device_unregister(&tt->v4l2_dev);
- release_region(tt->io, 2);
- v4l2_info(v4l2_dev, "TERRATEC ActivRadio Standalone card driver unloaded.\n");
+ isa_unregister_driver(&terratec_driver.driver);
}
module_init(terratec_init);
projects / GitHub / LineageOS / android_kernel_motorola_exynos9610.git / commitdiff