diff options
Diffstat (limited to 'drivers/media/radio/radio-zoltrix.c')
-rw-r--r-- | drivers/media/radio/radio-zoltrix.c | 442 |
1 files changed, 112 insertions, 330 deletions
diff --git a/drivers/media/radio/radio-zoltrix.c b/drivers/media/radio/radio-zoltrix.c index f5613b94820..026e88eef29 100644 --- a/drivers/media/radio/radio-zoltrix.c +++ b/drivers/media/radio/radio-zoltrix.c @@ -1,5 +1,6 @@ -/* 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 @@ -27,6 +28,14 @@ * * 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 */ @@ -36,82 +45,70 @@ #include <linux/videodev2.h> /* kernel radio structs */ #include <linux/mutex.h> #include <linux/io.h> /* outb, outb_p */ +#include <linux/slab.h> #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) { @@ -125,340 +122,125 @@ static int zol_setfreq(struct zoltrix *zol, unsigned long freq) 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); |