diff options
| -rw-r--r-- | drivers/media/radio/radio-typhoon.c | 350 |
1 files changed, 141 insertions, 209 deletions
diff --git a/drivers/media/radio/radio-typhoon.c b/drivers/media/radio/radio-typhoon.c index 5c3b319dab3..2090df44d50 100644 --- a/drivers/media/radio/radio-typhoon.c +++ b/drivers/media/radio/radio-typhoon.c @@ -34,37 +34,16 @@ #include <linux/module.h> /* Modules */ #include <linux/init.h> /* Initdata */ #include <linux/ioport.h> /* request_region */ -#include <linux/proc_fs.h> /* radio card status report */ -#include <linux/seq_file.h> -#include <asm/io.h> /* outb, outb_p */ -#include <asm/uaccess.h> /* copy to/from user */ +#include <linux/version.h> /* for KERNEL_VERSION MACRO */ #include <linux/videodev2.h> /* kernel radio structs */ -#include <media/v4l2-common.h> +#include <linux/io.h> /* outb, outb_p */ +#include <linux/uaccess.h> /* copy to/from user */ +#include <media/v4l2-device.h> #include <media/v4l2-ioctl.h> -#include <linux/version.h> /* for KERNEL_VERSION MACRO */ -#define RADIO_VERSION KERNEL_VERSION(0,1,1) -#define BANNER "Typhoon Radio Card driver v0.1.1\n" - -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 = 1<<14, - .default_value = 0xff, - .type = V4L2_CTRL_TYPE_INTEGER, - } -}; - +MODULE_AUTHOR("Dr. Henrik Seidel"); +MODULE_DESCRIPTION("A driver for the Typhoon radio card (a.k.a. EcoRadio)."); +MODULE_LICENSE("GPL"); #ifndef CONFIG_RADIO_TYPHOON_PORT #define CONFIG_RADIO_TYPHOON_PORT -1 @@ -74,13 +53,26 @@ static struct v4l2_queryctrl radio_qctrl[] = { #define CONFIG_RADIO_TYPHOON_MUTEFREQ 0 #endif -#ifndef CONFIG_PROC_FS -#undef CONFIG_RADIO_TYPHOON_PROC_FS -#endif +static int io = CONFIG_RADIO_TYPHOON_PORT; +static int radio_nr = -1; -struct typhoon_device { - unsigned long in_use; - int iobase; +module_param(io, int, 0); +MODULE_PARM_DESC(io, "I/O address of the Typhoon card (0x316 or 0x336)"); + +module_param(radio_nr, int, 0); + +static unsigned long mutefreq = CONFIG_RADIO_TYPHOON_MUTEFREQ; +module_param(mutefreq, ulong, 0); +MODULE_PARM_DESC(mutefreq, "Frequency used when muting the card (in kHz)"); + +#define RADIO_VERSION KERNEL_VERSION(0, 1, 1) + +#define BANNER "Typhoon Radio Card driver v0.1.1\n" + +struct typhoon { + struct v4l2_device v4l2_dev; + struct video_device vdev; + int io; int curvol; int muted; unsigned long curfreq; @@ -88,25 +80,19 @@ struct typhoon_device { struct mutex lock; }; -static void typhoon_setvol_generic(struct typhoon_device *dev, int vol); -static int typhoon_setfreq_generic(struct typhoon_device *dev, - unsigned long frequency); -static int typhoon_setfreq(struct typhoon_device *dev, unsigned long frequency); -static void typhoon_mute(struct typhoon_device *dev); -static void typhoon_unmute(struct typhoon_device *dev); -static int typhoon_setvol(struct typhoon_device *dev, int vol); +static struct typhoon typhoon_card; -static void typhoon_setvol_generic(struct typhoon_device *dev, int vol) +static void typhoon_setvol_generic(struct typhoon *dev, int vol) { mutex_lock(&dev->lock); vol >>= 14; /* Map 16 bit to 2 bit */ vol &= 3; - outb_p(vol / 2, dev->iobase); /* Set the volume, high bit. */ - outb_p(vol % 2, dev->iobase + 2); /* Set the volume, low bit. */ + outb_p(vol / 2, dev->io); /* Set the volume, high bit. */ + outb_p(vol % 2, dev->io + 2); /* Set the volume, low bit. */ mutex_unlock(&dev->lock); } -static int typhoon_setfreq_generic(struct typhoon_device *dev, +static int typhoon_setfreq_generic(struct typhoon *dev, unsigned long frequency) { unsigned long outval; @@ -130,22 +116,22 @@ static int typhoon_setfreq_generic(struct typhoon_device *dev, outval -= (10 * x * x + 10433) / 20866; outval += 4 * x - 11505; - outb_p((outval >> 8) & 0x01, dev->iobase + 4); - outb_p(outval >> 9, dev->iobase + 6); - outb_p(outval & 0xff, dev->iobase + 8); + outb_p((outval >> 8) & 0x01, dev->io + 4); + outb_p(outval >> 9, dev->io + 6); + outb_p(outval & 0xff, dev->io + 8); mutex_unlock(&dev->lock); return 0; } -static int typhoon_setfreq(struct typhoon_device *dev, unsigned long frequency) +static int typhoon_setfreq(struct typhoon *dev, unsigned long frequency) { typhoon_setfreq_generic(dev, frequency); dev->curfreq = frequency; return 0; } -static void typhoon_mute(struct typhoon_device *dev) +static void typhoon_mute(struct typhoon *dev) { if (dev->muted == 1) return; @@ -154,7 +140,7 @@ static void typhoon_mute(struct typhoon_device *dev) dev->muted = 1; } -static void typhoon_unmute(struct typhoon_device *dev) +static void typhoon_unmute(struct typhoon *dev) { if (dev->muted == 0) return; @@ -163,7 +149,7 @@ static void typhoon_unmute(struct typhoon_device *dev) dev->muted = 0; } -static int typhoon_setvol(struct typhoon_device *dev, int vol) +static int typhoon_setvol(struct typhoon *dev, int vol) { if (dev->muted && vol != 0) { /* user is unmuting the card */ dev->curvol = vol; @@ -188,9 +174,9 @@ static int vidioc_querycap(struct file *file, void *priv, { strlcpy(v->driver, "radio-typhoon", sizeof(v->driver)); strlcpy(v->card, "Typhoon 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; } @@ -200,10 +186,10 @@ static int vidioc_g_tuner(struct file *file, void *priv, 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->rangelow = 87.5 * 16000; + v->rangehigh = 108 * 16000; v->rxsubchans = V4L2_TUNER_SUB_MONO; v->capability = V4L2_TUNER_CAP_LOW; v->audmode = V4L2_TUNER_MODE_MONO; @@ -214,44 +200,37 @@ static int vidioc_g_tuner(struct file *file, void *priv, static int vidioc_s_tuner(struct file *file, void *priv, struct v4l2_tuner *v) { - if (v->index > 0) - return -EINVAL; - - return 0; + return v->index ? -EINVAL : 0; } -static int vidioc_s_frequency(struct file *file, void *priv, +static int vidioc_g_frequency(struct file *file, void *priv, struct v4l2_frequency *f) { - struct typhoon_device *typhoon = video_drvdata(file); + struct typhoon *dev = video_drvdata(file); - typhoon->curfreq = f->frequency; - typhoon_setfreq(typhoon, typhoon->curfreq); + f->type = V4L2_TUNER_RADIO; + f->frequency = dev->curfreq; return 0; } -static int vidioc_g_frequency(struct file *file, void *priv, +static int vidioc_s_frequency(struct file *file, void *priv, struct v4l2_frequency *f) { - struct typhoon_device *typhoon = video_drvdata(file); - - f->type = V4L2_TUNER_RADIO; - f->frequency = typhoon->curfreq; + struct typhoon *dev = video_drvdata(file); + dev->curfreq = f->frequency; + typhoon_setfreq(dev, dev->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, 16384, 65535); } return -EINVAL; } @@ -259,14 +238,14 @@ static int vidioc_queryctrl(struct file *file, void *priv, static int vidioc_g_ctrl(struct file *file, void *priv, struct v4l2_control *ctrl) { - struct typhoon_device *typhoon = video_drvdata(file); + struct typhoon *dev = video_drvdata(file); switch (ctrl->id) { case V4L2_CID_AUDIO_MUTE: - ctrl->value = typhoon->muted; + ctrl->value = dev->muted; return 0; case V4L2_CID_AUDIO_VOLUME: - ctrl->value = typhoon->curvol; + ctrl->value = dev->curvol; return 0; } return -EINVAL; @@ -275,33 +254,22 @@ static int vidioc_g_ctrl(struct file *file, void *priv, static int vidioc_s_ctrl (struct file *file, void *priv, struct v4l2_control *ctrl) { - struct typhoon_device *typhoon = video_drvdata(file); + struct typhoon *dev = video_drvdata(file); switch (ctrl->id) { case V4L2_CID_AUDIO_MUTE: if (ctrl->value) - typhoon_mute(typhoon); + typhoon_mute(dev); else - typhoon_unmute(typhoon); + typhoon_unmute(dev); return 0; case V4L2_CID_AUDIO_VOLUME: - typhoon_setvol(typhoon, ctrl->value); + typhoon_setvol(dev, 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; @@ -310,45 +278,62 @@ static int vidioc_g_input(struct file *filp, void *priv, unsigned int *i) 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 struct typhoon_device typhoon_unit = +static int vidioc_log_status(struct file *file, void *priv) { - .iobase = CONFIG_RADIO_TYPHOON_PORT, - .curfreq = CONFIG_RADIO_TYPHOON_MUTEFREQ, - .mutefreq = CONFIG_RADIO_TYPHOON_MUTEFREQ, -}; + struct typhoon *dev = video_drvdata(file); + struct v4l2_device *v4l2_dev = &dev->v4l2_dev; + + v4l2_info(v4l2_dev, BANNER); +#ifdef MODULE + v4l2_info(v4l2_dev, "Load type: Driver loaded as a module\n\n"); +#else + v4l2_info(v4l2_dev, "Load type: Driver compiled into kernel\n\n"); +#endif + v4l2_info(v4l2_dev, "frequency = %lu kHz\n", dev->curfreq >> 4); + v4l2_info(v4l2_dev, "volume = %d\n", dev->curvol); + v4l2_info(v4l2_dev, "mute = %s\n", dev->muted ? "on" : "off"); + v4l2_info(v4l2_dev, "io = 0x%x\n", dev->io); + v4l2_info(v4l2_dev, "mute frequency = %lu kHz\n", dev->mutefreq >> 4); + return 0; +} -static int typhoon_exclusive_open(struct file *file) +static int typhoon_open(struct file *file) { - return test_and_set_bit(0, &typhoon_unit.in_use) ? -EBUSY : 0; + return 0; } -static int typhoon_exclusive_release(struct file *file) +static int typhoon_release(struct file *file) { - clear_bit(0, &typhoon_unit.in_use); return 0; } static const struct v4l2_file_operations typhoon_fops = { .owner = THIS_MODULE, - .open = typhoon_exclusive_open, - .release = typhoon_exclusive_release, + .open = typhoon_open, + .release = typhoon_release, .ioctl = video_ioctl2, }; static const struct v4l2_ioctl_ops typhoon_ioctl_ops = { + .vidioc_log_status = vidioc_log_status, .vidioc_querycap = vidioc_querycap, .vidioc_g_tuner = vidioc_g_tuner, .vidioc_s_tuner = vidioc_s_tuner, @@ -363,125 +348,72 @@ static const struct v4l2_ioctl_ops typhoon_ioctl_ops = { .vidioc_s_ctrl = vidioc_s_ctrl, }; -static struct video_device typhoon_radio = { - .name = "Typhoon Radio", - .fops = &typhoon_fops, - .ioctl_ops = &typhoon_ioctl_ops, - .release = video_device_release_empty, -}; - -#ifdef CONFIG_RADIO_TYPHOON_PROC_FS - -static int typhoon_proc_show(struct seq_file *m, void *v) -{ - #ifdef MODULE - #define MODULEPROCSTRING "Driver loaded as a module" - #else - #define MODULEPROCSTRING "Driver compiled into kernel" - #endif - - seq_puts(m, BANNER); - seq_puts(m, "Load type: " MODULEPROCSTRING "\n\n"); - seq_printf(m, "frequency = %lu kHz\n", - typhoon_unit.curfreq >> 4); - seq_printf(m, "volume = %d\n", typhoon_unit.curvol); - seq_printf(m, "mute = %s\n", typhoon_unit.muted ? - "on" : "off"); - seq_printf(m, "iobase = 0x%x\n", typhoon_unit.iobase); - seq_printf(m, "mute frequency = %lu kHz\n", - typhoon_unit.mutefreq >> 4); - return 0; -} - -static int typhoon_proc_open(struct inode *inode, struct file *file) +static int __init typhoon_init(void) { - return single_open(file, typhoon_proc_show, NULL); -} - -static const struct file_operations typhoon_proc_fops = { - .owner = THIS_MODULE, - .open = typhoon_proc_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; -#endif /* CONFIG_RADIO_TYPHOON_PROC_FS */ - -MODULE_AUTHOR("Dr. Henrik Seidel"); -MODULE_DESCRIPTION("A driver for the Typhoon radio card (a.k.a. EcoRadio)."); -MODULE_LICENSE("GPL"); - -static int io = -1; -static int radio_nr = -1; - -module_param(io, int, 0); -MODULE_PARM_DESC(io, "I/O address of the Typhoon card (0x316 or 0x336)"); -module_param(radio_nr, int, 0); + struct typhoon *dev = &typhoon_card; + struct v4l2_device *v4l2_dev = &dev->v4l2_dev; + int res; -#ifdef MODULE -static unsigned long mutefreq; -module_param(mutefreq, ulong, 0); -MODULE_PARM_DESC(mutefreq, "Frequency used when muting the card (in kHz)"); -#endif + strlcpy(v4l2_dev->name, "typhoon", sizeof(v4l2_dev->name)); + dev->io = io; + dev->curfreq = dev->mutefreq = mutefreq; -static int __init typhoon_init(void) -{ -#ifdef MODULE - if (io == -1) { - printk(KERN_ERR "radio-typhoon: You must set an I/O address with io=0x316 or io=0x336\n"); + if (dev->io == -1) { + v4l2_err(v4l2_dev, "You must set an I/O address with io=0x316 or io=0x336\n"); return -EINVAL; } - typhoon_unit.iobase = io; - if (mutefreq < 87000 || mutefreq > 108500) { - printk(KERN_ERR "radio-typhoon: You must set a frequency (in kHz) used when muting the card,\n"); - printk(KERN_ERR "radio-typhoon: e.g. with \"mutefreq=87500\" (87000 <= mutefreq <= 108500)\n"); + if (dev->mutefreq < 87000 || dev->mutefreq > 108500) { + v4l2_err(v4l2_dev, "You must set a frequency (in kHz) used when muting the card,\n"); + v4l2_err(v4l2_dev, "e.g. with \"mutefreq=87500\" (87000 <= mutefreq <= 108500)\n"); return -EINVAL; } - typhoon_unit.mutefreq = mutefreq; -#endif /* MODULE */ - - printk(KERN_INFO BANNER); - mutex_init(&typhoon_unit.lock); - io = typhoon_unit.iobase; - if (!request_region(io, 8, "typhoon")) { - printk(KERN_ERR "radio-typhoon: port 0x%x already in use\n", - typhoon_unit.iobase); + + mutex_init(&dev->lock); + if (!request_region(dev->io, 8, "typhoon")) { + v4l2_err(v4l2_dev, "port 0x%x already in use\n", + dev->io); return -EBUSY; } - video_set_drvdata(&typhoon_radio, &typhoon_unit); - if (video_register_device(&typhoon_radio, VFL_TYPE_RADIO, radio_nr) < 0) { - release_region(io, 8); + res = v4l2_device_register(NULL, v4l2_dev); + if (res < 0) { + release_region(dev->io, 8); + v4l2_err(v4l2_dev, "Could not register v4l2_device\n"); + return res; + } + v4l2_info(v4l2_dev, BANNER); + + strlcpy(dev->vdev.name, v4l2_dev->name, sizeof(dev->vdev.name)); + dev->vdev.v4l2_dev = v4l2_dev; + dev->vdev.fops = &typhoon_fops; + dev->vdev.ioctl_ops = &typhoon_ioctl_ops; + dev->vdev.release = video_device_release_empty; + video_set_drvdata(&dev->vdev, dev); + if (video_register_device(&dev->vdev, VFL_TYPE_RADIO, radio_nr) < 0) { + v4l2_device_unregister(&dev->v4l2_dev); + release_region(dev->io, 8); return -EINVAL; } - printk(KERN_INFO "radio-typhoon: port 0x%x.\n", typhoon_unit.iobase); - printk(KERN_INFO "radio-typhoon: mute frequency is %lu kHz.\n", - typhoon_unit.mutefreq); - typhoon_unit.mutefreq <<= 4; + v4l2_info(v4l2_dev, "port 0x%x.\n", dev->io); + v4l2_info(v4l2_dev, "mute frequency is %lu kHz.\n", dev->mutefreq); + dev->mutefreq <<= 4; /* mute card - prevents noisy bootups */ - typhoon_mute(&typhoon_unit); - -#ifdef CONFIG_RADIO_TYPHOON_PROC_FS - if (!proc_create("driver/radio-typhoon", 0, NULL, &typhoon_proc_fops)) - printk(KERN_ERR "radio-typhoon: registering /proc/driver/radio-typhoon failed\n"); -#endif + typhoon_mute(dev); return 0; } -static void __exit typhoon_cleanup_module(void) +static void __exit typhoon_exit(void) { + struct typhoon *dev = &typhoon_card; -#ifdef CONFIG_RADIO_TYPHOON_PROC_FS - remove_proc_entry("driver/radio-typhoon", NULL); -#endif - - video_unregister_device(&typhoon_radio); - release_region(io, 8); + video_unregister_device(&dev->vdev); + v4l2_device_unregister(&dev->v4l2_dev); + release_region(dev->io, 8); } module_init(typhoon_init); -module_exit(typhoon_cleanup_module); +module_exit(typhoon_exit); |