#include <linux/module.h>
#include <linux/init.h>
#include <linux/ioport.h>
-#include <asm/io.h>
-#include <asm/uaccess.h>
+#include <linux/version.h> /* for KERNEL_VERSION MACRO */
#include <linux/videodev2.h>
-#include <media/v4l2-common.h>
+#include <linux/io.h>
+#include <linux/uaccess.h>
+#include <media/v4l2-device.h>
#include <media/v4l2-ioctl.h>
-#include <linux/version.h> /* for KERNEL_VERSION MACRO */
-#define RADIO_VERSION KERNEL_VERSION(0,0,2)
-
-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 = 65535,
- .step = 2048,
- .default_value = 65535,
- .type = V4L2_CTRL_TYPE_INTEGER,
- },{
- .id = V4L2_CID_AUDIO_BASS,
- .name = "Bass",
- .minimum = 0,
- .maximum = 65535,
- .step = 4370,
- .default_value = 32768,
- .type = V4L2_CTRL_TYPE_INTEGER,
- },{
- .id = V4L2_CID_AUDIO_TREBLE,
- .name = "Treble",
- .minimum = 0,
- .maximum = 65535,
- .step = 4370,
- .default_value = 32768,
- .type = V4L2_CTRL_TYPE_INTEGER,
- },
-};
+MODULE_AUTHOR("Eric Lammerts, Russell Kroll, Quay Lu, Donald Song, Jason Lewis, Scott McGrath, William McGrath");
+MODULE_DESCRIPTION("A driver for the Trust FM Radio card.");
+MODULE_LICENSE("GPL");
/* acceptable ports: 0x350 (JP3 shorted), 0x358 (JP3 open) */
static int io = CONFIG_RADIO_TRUST_PORT;
static int radio_nr = -1;
-static int ioval = 0xf;
-static __u16 curvol;
-static __u16 curbass;
-static __u16 curtreble;
-static unsigned long curfreq;
-static int curstereo;
-static int curmute;
-static unsigned long in_use;
+
+module_param(io, int, 0);
+MODULE_PARM_DESC(io, "I/O address of the Trust FM Radio card (0x350 or 0x358)");
+module_param(radio_nr, int, 0);
+
+#define RADIO_VERSION KERNEL_VERSION(0, 0, 2)
+
+struct trust {
+ struct v4l2_device v4l2_dev;
+ struct video_device vdev;
+ int io;
+ int ioval;
+ __u16 curvol;
+ __u16 curbass;
+ __u16 curtreble;
+ int muted;
+ unsigned long curfreq;
+ int curstereo;
+ int curmute;
+ struct mutex lock;
+};
+
+static struct trust trust_card;
/* i2c addresses */
#define TDA7318_ADDR 0x88
#define TSA6060T_ADDR 0xc4
-#define TR_DELAY do { inb(io); inb(io); inb(io); } while(0)
-#define TR_SET_SCL outb(ioval |= 2, io)
-#define TR_CLR_SCL outb(ioval &= 0xfd, io)
-#define TR_SET_SDA outb(ioval |= 1, io)
-#define TR_CLR_SDA outb(ioval &= 0xfe, io)
+#define TR_DELAY do { inb(tr->io); inb(tr->io); inb(tr->io); } while (0)
+#define TR_SET_SCL outb(tr->ioval |= 2, tr->io)
+#define TR_CLR_SCL outb(tr->ioval &= 0xfd, tr->io)
+#define TR_SET_SDA outb(tr->ioval |= 1, tr->io)
+#define TR_CLR_SDA outb(tr->ioval &= 0xfe, tr->io)
-static void write_i2c(int n, ...)
+static void write_i2c(struct trust *tr, int n, ...)
{
unsigned char val, mask;
va_list args;
va_end(args);
}
-static void tr_setvol(__u16 vol)
+static void tr_setvol(struct trust *tr, __u16 vol)
{
- curvol = vol / 2048;
- write_i2c(2, TDA7318_ADDR, curvol ^ 0x1f);
+ mutex_lock(&tr->lock);
+ tr->curvol = vol / 2048;
+ write_i2c(tr, 2, TDA7318_ADDR, tr->curvol ^ 0x1f);
+ mutex_unlock(&tr->lock);
}
static int basstreble2chip[15] = {
0, 1, 2, 3, 4, 5, 6, 7, 14, 13, 12, 11, 10, 9, 8
};
-static void tr_setbass(__u16 bass)
+static void tr_setbass(struct trust *tr, __u16 bass)
{
- curbass = bass / 4370;
- write_i2c(2, TDA7318_ADDR, 0x60 | basstreble2chip[curbass]);
+ mutex_lock(&tr->lock);
+ tr->curbass = bass / 4370;
+ write_i2c(tr, 2, TDA7318_ADDR, 0x60 | basstreble2chip[tr->curbass]);
+ mutex_unlock(&tr->lock);
}
-static void tr_settreble(__u16 treble)
+static void tr_settreble(struct trust *tr, __u16 treble)
{
- curtreble = treble / 4370;
- write_i2c(2, TDA7318_ADDR, 0x70 | basstreble2chip[curtreble]);
+ mutex_lock(&tr->lock);
+ tr->curtreble = treble / 4370;
+ write_i2c(tr, 2, TDA7318_ADDR, 0x70 | basstreble2chip[tr->curtreble]);
+ mutex_unlock(&tr->lock);
}
-static void tr_setstereo(int stereo)
+static void tr_setstereo(struct trust *tr, int stereo)
{
- curstereo = !!stereo;
- ioval = (ioval & 0xfb) | (!curstereo << 2);
- outb(ioval, io);
+ mutex_lock(&tr->lock);
+ tr->curstereo = !!stereo;
+ tr->ioval = (tr->ioval & 0xfb) | (!tr->curstereo << 2);
+ outb(tr->ioval, tr->io);
+ mutex_unlock(&tr->lock);
}
-static void tr_setmute(int mute)
+static void tr_setmute(struct trust *tr, int mute)
{
- curmute = !!mute;
- ioval = (ioval & 0xf7) | (curmute << 3);
- outb(ioval, io);
+ mutex_lock(&tr->lock);
+ tr->curmute = !!mute;
+ tr->ioval = (tr->ioval & 0xf7) | (tr->curmute << 3);
+ outb(tr->ioval, tr->io);
+ mutex_unlock(&tr->lock);
}
-static int tr_getsigstr(void)
+static int tr_getsigstr(struct trust *tr)
{
int i, v;
- for(i = 0, v = 0; i < 100; i++) v |= inb(io);
- return (v & 1)? 0 : 0xffff;
+ mutex_lock(&tr->lock);
+ for (i = 0, v = 0; i < 100; i++)
+ v |= inb(tr->io);
+ mutex_unlock(&tr->lock);
+ return (v & 1) ? 0 : 0xffff;
}
-static int tr_getstereo(void)
+static int tr_getstereo(struct trust *tr)
{
/* don't know how to determine it, just return the setting */
- return curstereo;
+ return tr->curstereo;
}
-static void tr_setfreq(unsigned long f)
+static void tr_setfreq(struct trust *tr, unsigned long f)
{
+ mutex_lock(&tr->lock);
+ tr->curfreq = f;
f /= 160; /* Convert to 10 kHz units */
- f += 1070; /* Add 10.7 MHz IF */
-
- write_i2c(5, TSA6060T_ADDR, (f << 1) | 1, f >> 7, 0x60 | ((f >> 15) & 1), 0);
+ f += 1070; /* Add 10.7 MHz IF */
+ write_i2c(tr, 5, TSA6060T_ADDR, (f << 1) | 1, f >> 7, 0x60 | ((f >> 15) & 1), 0);
+ mutex_unlock(&tr->lock);
}
static int vidioc_querycap(struct file *file, void *priv,
{
strlcpy(v->driver, "radio-trust", sizeof(v->driver));
strlcpy(v->card, "Trust FM Radio", sizeof(v->card));
- sprintf(v->bus_info, "ISA");
+ strlcpy(v->bus_info, "ISA", sizeof(v->bus_info));
v->version = RADIO_VERSION;
- v->capabilities = V4L2_CAP_TUNER;
+ 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 trust *tr = video_drvdata(file);
+
if (v->index > 0)
return -EINVAL;
- strcpy(v->name, "FM");
+ strlcpy(v->name, "FM", sizeof(v->name));
v->type = V4L2_TUNER_RADIO;
- v->rangelow = (87.5*16000);
- v->rangehigh = (108*16000);
- v->rxsubchans = V4L2_TUNER_SUB_MONO|V4L2_TUNER_SUB_STEREO;
+ v->rangelow = 87.5 * 16000;
+ v->rangehigh = 108 * 16000;
+ v->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
v->capability = V4L2_TUNER_CAP_LOW;
- if (tr_getstereo())
+ if (tr_getstereo(tr))
v->audmode = V4L2_TUNER_MODE_STEREO;
else
v->audmode = V4L2_TUNER_MODE_MONO;
- v->signal = tr_getsigstr();
+ v->signal = tr_getsigstr(tr);
return 0;
}
static int vidioc_s_tuner(struct file *file, void *priv,
struct v4l2_tuner *v)
{
- if (v->index > 0)
- return -EINVAL;
+ struct trust *tr = video_drvdata(file);
+ if (v->index)
+ return -EINVAL;
+ tr_setstereo(tr, v->audmode == V4L2_TUNER_MODE_STEREO);
return 0;
}
static int vidioc_s_frequency(struct file *file, void *priv,
struct v4l2_frequency *f)
{
- curfreq = f->frequency;
- tr_setfreq(curfreq);
+ struct trust *tr = video_drvdata(file);
+
+ tr_setfreq(tr, f->frequency);
return 0;
}
static int vidioc_g_frequency(struct file *file, void *priv,
struct v4l2_frequency *f)
{
+ struct trust *tr = video_drvdata(file);
+
f->type = V4L2_TUNER_RADIO;
- f->frequency = curfreq;
+ f->frequency = tr->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;
- }
+ 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, 2048, 65535);
+ case V4L2_CID_AUDIO_BASS:
+ case V4L2_CID_AUDIO_TREBLE:
+ return v4l2_ctrl_query_fill(qc, 0, 65535, 4370, 32768);
}
return -EINVAL;
}
static int vidioc_g_ctrl(struct file *file, void *priv,
struct v4l2_control *ctrl)
{
+ struct trust *tr = video_drvdata(file);
+
switch (ctrl->id) {
case V4L2_CID_AUDIO_MUTE:
- ctrl->value = curmute;
+ ctrl->value = tr->curmute;
return 0;
case V4L2_CID_AUDIO_VOLUME:
- ctrl->value = curvol * 2048;
+ ctrl->value = tr->curvol * 2048;
return 0;
case V4L2_CID_AUDIO_BASS:
- ctrl->value = curbass * 4370;
+ ctrl->value = tr->curbass * 4370;
return 0;
case V4L2_CID_AUDIO_TREBLE:
- ctrl->value = curtreble * 4370;
+ ctrl->value = tr->curtreble * 4370;
return 0;
}
return -EINVAL;
static int vidioc_s_ctrl(struct file *file, void *priv,
struct v4l2_control *ctrl)
{
+ struct trust *tr = video_drvdata(file);
+
switch (ctrl->id) {
case V4L2_CID_AUDIO_MUTE:
- tr_setmute(ctrl->value);
+ tr_setmute(tr, ctrl->value);
return 0;
case V4L2_CID_AUDIO_VOLUME:
- tr_setvol(ctrl->value);
+ tr_setvol(tr, ctrl->value);
return 0;
case V4L2_CID_AUDIO_BASS:
- tr_setbass(ctrl->value);
+ tr_setbass(tr, ctrl->value);
return 0;
case V4L2_CID_AUDIO_TREBLE:
- tr_settreble(ctrl->value);
+ tr_settreble(tr, ctrl->value);
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;
static int vidioc_s_input(struct file *filp, void *priv, unsigned int i)
{
- if (i != 0)
- return -EINVAL;
+ 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;
}
static int vidioc_s_audio(struct file *file, void *priv,
struct v4l2_audio *a)
{
- if (a->index != 0)
- return -EINVAL;
- return 0;
+ return a->index ? -EINVAL : 0;
}
-static int trust_exclusive_open(struct file *file)
+static int trust_open(struct file *file)
{
- return test_and_set_bit(0, &in_use) ? -EBUSY : 0;
+ return 0;
}
-static int trust_exclusive_release(struct file *file)
+static int trust_release(struct file *file)
{
- clear_bit(0, &in_use);
return 0;
}
static const struct v4l2_file_operations trust_fops = {
.owner = THIS_MODULE,
- .open = trust_exclusive_open,
- .release = trust_exclusive_release,
+ .open = trust_open,
+ .release = trust_release,
.ioctl = video_ioctl2,
};
.vidioc_s_input = vidioc_s_input,
};
-static struct video_device trust_radio = {
- .name = "Trust FM Radio",
- .fops = &trust_fops,
- .ioctl_ops = &trust_ioctl_ops,
- .release = video_device_release_empty,
-};
-
static int __init trust_init(void)
{
- if(io == -1) {
- printk(KERN_ERR "You must set an I/O address with io=0x???\n");
+ struct trust *tr = &trust_card;
+ struct v4l2_device *v4l2_dev = &tr->v4l2_dev;
+ int res;
+
+ strlcpy(v4l2_dev->name, "trust", sizeof(v4l2_dev->name));
+ tr->io = io;
+ tr->ioval = 0xf;
+ mutex_init(&tr->lock);
+
+ if (tr->io == -1) {
+ v4l2_err(v4l2_dev, "You must set an I/O address with io=0x???\n");
return -EINVAL;
}
- if(!request_region(io, 2, "Trust FM Radio")) {
- printk(KERN_ERR "trust: port 0x%x already in use\n", io);
+ if (!request_region(tr->io, 2, "Trust FM Radio")) {
+ v4l2_err(v4l2_dev, "port 0x%x already in use\n", tr->io);
return -EBUSY;
}
- if (video_register_device(&trust_radio, VFL_TYPE_RADIO, radio_nr) < 0) {
- release_region(io, 2);
+
+ res = v4l2_device_register(NULL, v4l2_dev);
+ if (res < 0) {
+ release_region(tr->io, 2);
+ v4l2_err(v4l2_dev, "Could not register v4l2_device\n");
+ return res;
+ }
+
+ strlcpy(tr->vdev.name, v4l2_dev->name, sizeof(tr->vdev.name));
+ tr->vdev.v4l2_dev = v4l2_dev;
+ tr->vdev.fops = &trust_fops;
+ tr->vdev.ioctl_ops = &trust_ioctl_ops;
+ tr->vdev.release = video_device_release_empty;
+ video_set_drvdata(&tr->vdev, tr);
+
+ if (video_register_device(&tr->vdev, VFL_TYPE_RADIO, radio_nr) < 0) {
+ v4l2_device_unregister(v4l2_dev);
+ release_region(tr->io, 2);
return -EINVAL;
}
- printk(KERN_INFO "Trust FM Radio card driver v1.0.\n");
+ v4l2_info(v4l2_dev, "Trust FM Radio card driver v1.0.\n");
- write_i2c(2, TDA7318_ADDR, 0x80); /* speaker att. LF = 0 dB */
- write_i2c(2, TDA7318_ADDR, 0xa0); /* speaker att. RF = 0 dB */
- write_i2c(2, TDA7318_ADDR, 0xc0); /* speaker att. LR = 0 dB */
- write_i2c(2, TDA7318_ADDR, 0xe0); /* speaker att. RR = 0 dB */
- write_i2c(2, TDA7318_ADDR, 0x40); /* stereo 1 input, gain = 18.75 dB */
+ write_i2c(tr, 2, TDA7318_ADDR, 0x80); /* speaker att. LF = 0 dB */
+ write_i2c(tr, 2, TDA7318_ADDR, 0xa0); /* speaker att. RF = 0 dB */
+ write_i2c(tr, 2, TDA7318_ADDR, 0xc0); /* speaker att. LR = 0 dB */
+ write_i2c(tr, 2, TDA7318_ADDR, 0xe0); /* speaker att. RR = 0 dB */
+ write_i2c(tr, 2, TDA7318_ADDR, 0x40); /* stereo 1 input, gain = 18.75 dB */
- tr_setvol(0x8000);
- tr_setbass(0x8000);
- tr_settreble(0x8000);
- tr_setstereo(1);
+ tr_setvol(tr, 0xffff);
+ tr_setbass(tr, 0x8000);
+ tr_settreble(tr, 0x8000);
+ tr_setstereo(tr, 1);
/* mute card - prevents noisy bootups */
- tr_setmute(1);
+ tr_setmute(tr, 1);
return 0;
}
-MODULE_AUTHOR("Eric Lammerts, Russell Kroll, Quay Lu, Donald Song, Jason Lewis, Scott McGrath, William McGrath");
-MODULE_DESCRIPTION("A driver for the Trust FM Radio card.");
-MODULE_LICENSE("GPL");
-
-module_param(io, int, 0);
-MODULE_PARM_DESC(io, "I/O address of the Trust FM Radio card (0x350 or 0x358)");
-module_param(radio_nr, int, 0);
-
static void __exit cleanup_trust_module(void)
{
- video_unregister_device(&trust_radio);
- release_region(io, 2);
+ struct trust *tr = &trust_card;
+
+ video_unregister_device(&tr->vdev);
+ v4l2_device_unregister(&tr->v4l2_dev);
+ release_region(tr->io, 2);
}
module_init(trust_init);
projects / GitHub / LineageOS / G12 / android_kernel_amlogic_linux-4.9.git / commitdiff