diff options
Diffstat (limited to 'drivers/media/radio/radio-gemtek.c')
| -rw-r--r-- | drivers/media/radio/radio-gemtek.c | 396 |
1 files changed, 186 insertions, 210 deletions
diff --git a/drivers/media/radio/radio-gemtek.c b/drivers/media/radio/radio-gemtek.c index 2b68be773f13..150464426d1d 100644 --- a/drivers/media/radio/radio-gemtek.c +++ b/drivers/media/radio/radio-gemtek.c @@ -20,16 +20,14 @@ #include <linux/init.h> /* Initdata */ #include <linux/ioport.h> /* request_region */ #include <linux/delay.h> /* udelay */ -#include <asm/io.h> /* outb, outb_p */ -#include <asm/uaccess.h> /* copy to/from user */ #include <linux/videodev2.h> /* kernel radio structs */ +#include <linux/version.h> /* for KERNEL_VERSION MACRO */ +#include <linux/mutex.h> +#include <linux/io.h> /* outb, outb_p */ #include <media/v4l2-ioctl.h> -#include <media/v4l2-common.h> -#include <linux/spinlock.h> +#include <media/v4l2-device.h> -#include <linux/version.h> /* for KERNEL_VERSION MACRO */ -#define RADIO_VERSION KERNEL_VERSION(0,0,3) -#define RADIO_BANNER "GemTek Radio card driver: v0.0.3" +#define RADIO_VERSION KERNEL_VERSION(0, 0, 3) /* * Module info. @@ -57,7 +55,6 @@ static int shutdown = 1; static int keepmuted = 1; static int initmute = 1; static int radio_nr = -1; -static unsigned long in_use; module_param(io, int, 0444); MODULE_PARM_DESC(io, "Force I/O port for the GemTek Radio card if automatic " @@ -112,12 +109,19 @@ module_param(radio_nr, int, 0444); #define SHORT_DELAY 5 /* usec */ #define LONG_DELAY 75 /* usec */ -struct gemtek_device { +struct gemtek { + struct v4l2_device v4l2_dev; + struct video_device vdev; + struct mutex lock; unsigned long lastfreq; int muted; + int verified; + int io; u32 bu2614data; }; +static struct gemtek gemtek_card; + #define BU2614_FREQ_BITS 16 /* D0..D15, Frequency data */ #define BU2614_PORT_BITS 3 /* P0..P2, Output port control data */ #define BU2614_VOID_BITS 4 /* unused */ @@ -153,10 +157,6 @@ struct gemtek_device { #define BU2614_FMUN_MASK MKMASK(FMUN) #define BU2614_TEST_MASK MKMASK(TEST) -static struct gemtek_device gemtek_unit; - -static spinlock_t lock; - /* * Set data which will be sent to BU2614FS. */ @@ -166,33 +166,33 @@ static spinlock_t lock; /* * Transmit settings to BU2614FS over GemTek IC. */ -static void gemtek_bu2614_transmit(struct gemtek_device *dev) +static void gemtek_bu2614_transmit(struct gemtek *gt) { int i, bit, q, mute; - spin_lock(&lock); + mutex_lock(>->lock); - mute = dev->muted ? GEMTEK_MT : 0x00; + mute = gt->muted ? GEMTEK_MT : 0x00; - outb_p(mute | GEMTEK_DA | GEMTEK_CK, io); + outb_p(mute | GEMTEK_DA | GEMTEK_CK, gt->io); udelay(SHORT_DELAY); - outb_p(mute | GEMTEK_CE | GEMTEK_DA | GEMTEK_CK, io); + outb_p(mute | GEMTEK_CE | GEMTEK_DA | GEMTEK_CK, gt->io); udelay(LONG_DELAY); - for (i = 0, q = dev->bu2614data; i < 32; i++, q >>= 1) { - bit = (q & 1) ? GEMTEK_DA : 0; - outb_p(mute | GEMTEK_CE | bit, io); - udelay(SHORT_DELAY); - outb_p(mute | GEMTEK_CE | bit | GEMTEK_CK, io); - udelay(SHORT_DELAY); + for (i = 0, q = gt->bu2614data; i < 32; i++, q >>= 1) { + bit = (q & 1) ? GEMTEK_DA : 0; + outb_p(mute | GEMTEK_CE | bit, gt->io); + udelay(SHORT_DELAY); + outb_p(mute | GEMTEK_CE | bit | GEMTEK_CK, gt->io); + udelay(SHORT_DELAY); } - outb_p(mute | GEMTEK_DA | GEMTEK_CK, io); + outb_p(mute | GEMTEK_DA | GEMTEK_CK, gt->io); udelay(SHORT_DELAY); - outb_p(mute | GEMTEK_CE | GEMTEK_DA | GEMTEK_CK, io); + outb_p(mute | GEMTEK_CE | GEMTEK_DA | GEMTEK_CK, gt->io); udelay(LONG_DELAY); - spin_unlock(&lock); + mutex_unlock(>->lock); } /* @@ -206,107 +206,109 @@ static unsigned long gemtek_convfreq(unsigned long freq) /* * Set FM-frequency. */ -static void gemtek_setfreq(struct gemtek_device *dev, unsigned long freq) +static void gemtek_setfreq(struct gemtek *gt, unsigned long freq) { - - if (keepmuted && hardmute && dev->muted) + if (keepmuted && hardmute && gt->muted) return; - if (freq < GEMTEK_LOWFREQ) - freq = GEMTEK_LOWFREQ; - else if (freq > GEMTEK_HIGHFREQ) - freq = GEMTEK_HIGHFREQ; + freq = clamp_val(freq, GEMTEK_LOWFREQ, GEMTEK_HIGHFREQ); - dev->lastfreq = freq; - dev->muted = 0; + gt->lastfreq = freq; + gt->muted = 0; - gemtek_bu2614_set(dev, BU2614_PORT, 0); - gemtek_bu2614_set(dev, BU2614_FMES, 0); - gemtek_bu2614_set(dev, BU2614_SWIN, 0); /* FM-mode */ - gemtek_bu2614_set(dev, BU2614_SWAL, 0); - gemtek_bu2614_set(dev, BU2614_FMUN, 1); /* GT bit set */ - gemtek_bu2614_set(dev, BU2614_TEST, 0); + gemtek_bu2614_set(gt, BU2614_PORT, 0); + gemtek_bu2614_set(gt, BU2614_FMES, 0); + gemtek_bu2614_set(gt, BU2614_SWIN, 0); /* FM-mode */ + gemtek_bu2614_set(gt, BU2614_SWAL, 0); + gemtek_bu2614_set(gt, BU2614_FMUN, 1); /* GT bit set */ + gemtek_bu2614_set(gt, BU2614_TEST, 0); - gemtek_bu2614_set(dev, BU2614_STDF, GEMTEK_STDF_3_125_KHZ); - gemtek_bu2614_set(dev, BU2614_FREQ, gemtek_convfreq(freq)); + gemtek_bu2614_set(gt, BU2614_STDF, GEMTEK_STDF_3_125_KHZ); + gemtek_bu2614_set(gt, BU2614_FREQ, gemtek_convfreq(freq)); - gemtek_bu2614_transmit(dev); + gemtek_bu2614_transmit(gt); } /* * Set mute flag. */ -static void gemtek_mute(struct gemtek_device *dev) +static void gemtek_mute(struct gemtek *gt) { int i; - dev->muted = 1; + + gt->muted = 1; if (hardmute) { /* Turn off PLL, disable data output */ - gemtek_bu2614_set(dev, BU2614_PORT, 0); - gemtek_bu2614_set(dev, BU2614_FMES, 0); /* CT bit off */ - gemtek_bu2614_set(dev, BU2614_SWIN, 0); /* FM-mode */ - gemtek_bu2614_set(dev, BU2614_SWAL, 0); - gemtek_bu2614_set(dev, BU2614_FMUN, 0); /* GT bit off */ - gemtek_bu2614_set(dev, BU2614_TEST, 0); - gemtek_bu2614_set(dev, BU2614_STDF, GEMTEK_PLL_OFF); - gemtek_bu2614_set(dev, BU2614_FREQ, 0); - gemtek_bu2614_transmit(dev); - } else { - spin_lock(&lock); + gemtek_bu2614_set(gt, BU2614_PORT, 0); + gemtek_bu2614_set(gt, BU2614_FMES, 0); /* CT bit off */ + gemtek_bu2614_set(gt, BU2614_SWIN, 0); /* FM-mode */ + gemtek_bu2614_set(gt, BU2614_SWAL, 0); + gemtek_bu2614_set(gt, BU2614_FMUN, 0); /* GT bit off */ + gemtek_bu2614_set(gt, BU2614_TEST, 0); + gemtek_bu2614_set(gt, BU2614_STDF, GEMTEK_PLL_OFF); + gemtek_bu2614_set(gt, BU2614_FREQ, 0); + gemtek_bu2614_transmit(gt); + return; + } - /* Read bus contents (CE, CK and DA). */ - i = inb_p(io); - /* Write it back with mute flag set. */ - outb_p((i >> 5) | GEMTEK_MT, io); - udelay(SHORT_DELAY); + mutex_lock(>->lock); - spin_unlock(&lock); - } + /* Read bus contents (CE, CK and DA). */ + i = inb_p(gt->io); + /* Write it back with mute flag set. */ + outb_p((i >> 5) | GEMTEK_MT, gt->io); + udelay(SHORT_DELAY); + + mutex_unlock(>->lock); } /* * Unset mute flag. */ -static void gemtek_unmute(struct gemtek_device *dev) +static void gemtek_unmute(struct gemtek *gt) { int i; - dev->muted = 0; + gt->muted = 0; if (hardmute) { /* Turn PLL back on. */ - gemtek_setfreq(dev, dev->lastfreq); - } else { - spin_lock(&lock); + gemtek_setfreq(gt, gt->lastfreq); + return; + } + mutex_lock(>->lock); - i = inb_p(io); - outb_p(i >> 5, io); - udelay(SHORT_DELAY); + i = inb_p(gt->io); + outb_p(i >> 5, gt->io); + udelay(SHORT_DELAY); - spin_unlock(&lock); - } + mutex_unlock(>->lock); } /* * Get signal strength (= stereo status). */ -static inline int gemtek_getsigstr(void) +static inline int gemtek_getsigstr(struct gemtek *gt) { - return inb_p(io) & GEMTEK_NS ? 0 : 1; + int sig; + + mutex_lock(>->lock); + sig = inb_p(gt->io) & GEMTEK_NS ? 0 : 1; + mutex_unlock(>->lock); + return sig; } /* * Check if requested card acts like GemTek Radio card. */ -static int gemtek_verify(int port) +static int gemtek_verify(struct gemtek *gt, int port) { - static int verified = -1; int i, q; - if (verified == port) + if (gt->verified == port) return 1; - spin_lock(&lock); + mutex_lock(>->lock); q = inb_p(port); /* Read bus contents before probing. */ /* Try to turn on CE, CK and DA respectively and check if card responds @@ -316,15 +318,15 @@ static int gemtek_verify(int port) udelay(SHORT_DELAY); if ((inb_p(port) & (~GEMTEK_NS)) != (0x17 | (1 << (i + 5)))) { - spin_unlock(&lock); + mutex_unlock(>->lock); return 0; } } outb_p(q >> 5, port); /* Write bus contents back. */ udelay(SHORT_DELAY); - spin_unlock(&lock); - verified = port; + mutex_unlock(>->lock); + gt->verified = port; return 1; } @@ -332,83 +334,61 @@ static int gemtek_verify(int port) /* * Automatic probing for card. */ -static int gemtek_probe(void) +static int gemtek_probe(struct gemtek *gt) { + struct v4l2_device *v4l2_dev = >->v4l2_dev; int ioports[] = { 0x20c, 0x30c, 0x24c, 0x34c, 0x248, 0x28c }; int i; if (!probe) { - printk(KERN_INFO "Automatic device probing disabled.\n"); + v4l2_info(v4l2_dev, "Automatic device probing disabled.\n"); return -1; } - printk(KERN_INFO "Automatic device probing enabled.\n"); + v4l2_info(v4l2_dev, "Automatic device probing enabled.\n"); for (i = 0; i < ARRAY_SIZE(ioports); ++i) { - printk(KERN_INFO "Trying I/O port 0x%x...\n", ioports[i]); + v4l2_info(v4l2_dev, "Trying I/O port 0x%x...\n", ioports[i]); if (!request_region(ioports[i], 1, "gemtek-probe")) { - printk(KERN_WARNING "I/O port 0x%x busy!\n", + v4l2_warn(v4l2_dev, "I/O port 0x%x busy!\n", ioports[i]); continue; } - if (gemtek_verify(ioports[i])) { - printk(KERN_INFO "Card found from I/O port " + if (gemtek_verify(gt, ioports[i])) { + v4l2_info(v4l2_dev, "Card found from I/O port " "0x%x!\n", ioports[i]); release_region(ioports[i], 1); - - io = ioports[i]; - return io; + gt->io = ioports[i]; + return gt->io; } release_region(ioports[i], 1); } - printk(KERN_ERR "Automatic probing failed!\n"); - + v4l2_err(v4l2_dev, "Automatic probing failed!\n"); return -1; } /* * Video 4 Linux stuff. */ - -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 = 65535, - .default_value = 0xff, - .type = V4L2_CTRL_TYPE_INTEGER, - } -}; - -static int gemtek_exclusive_open(struct file *file) +static int gemtek_open(struct file *file) { - return test_and_set_bit(0, &in_use) ? -EBUSY : 0; + return 0; } -static int gemtek_exclusive_release(struct file *file) +static int gemtek_release(struct file *file) { - clear_bit(0, &in_use); return 0; } static const struct v4l2_file_operations gemtek_fops = { .owner = THIS_MODULE, - .open = gemtek_exclusive_open, - .release = gemtek_exclusive_release, + .open = gemtek_open, + .release = gemtek_release, .ioctl = video_ioctl2, }; @@ -417,23 +397,25 @@ static int vidioc_querycap(struct file *file, void *priv, { strlcpy(v->driver, "radio-gemtek", sizeof(v->driver)); strlcpy(v->card, "GemTek", 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 gemtek *gt = 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 = GEMTEK_LOWFREQ; v->rangehigh = GEMTEK_HIGHFREQ; v->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO; - v->signal = 0xffff * gemtek_getsigstr(); + v->signal = 0xffff * gemtek_getsigstr(gt); if (v->signal) { v->audmode = V4L2_TUNER_MODE_STEREO; v->rxsubchans = V4L2_TUNER_SUB_STEREO; @@ -441,65 +423,56 @@ static int vidioc_g_tuner(struct file *file, void *priv, struct v4l2_tuner *v) v->audmode = V4L2_TUNER_MODE_MONO; v->rxsubchans = V4L2_TUNER_SUB_MONO; } - return 0; } 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 != 0) ? -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 gemtek_device *rt = video_drvdata(file); - - gemtek_setfreq(rt, f->frequency); + struct gemtek *gt = video_drvdata(file); + if (f->tuner != 0) + return -EINVAL; + f->type = V4L2_TUNER_RADIO; + f->frequency = gt->lastfreq; 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 gemtek_device *rt = video_drvdata(file); + struct gemtek *gt = video_drvdata(file); - f->type = V4L2_TUNER_RADIO; - f->frequency = rt->lastfreq; + if (f->tuner != 0 || f->type != V4L2_TUNER_RADIO) + return -EINVAL; + gemtek_setfreq(gt, f->frequency); 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, 0); + default: + return -EINVAL; } - return -EINVAL; } static int vidioc_g_ctrl(struct file *file, void *priv, struct v4l2_control *ctrl) { - struct gemtek_device *rt = video_drvdata(file); + struct gemtek *gt = video_drvdata(file); switch (ctrl->id) { case V4L2_CID_AUDIO_MUTE: - ctrl->value = rt->muted; - return 0; - case V4L2_CID_AUDIO_VOLUME: - if (rt->muted) - ctrl->value = 0; - else - ctrl->value = 65535; + ctrl->value = gt->muted; return 0; } return -EINVAL; @@ -508,35 +481,19 @@ 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 gemtek_device *rt = video_drvdata(file); + struct gemtek *gt = video_drvdata(file); switch (ctrl->id) { case V4L2_CID_AUDIO_MUTE: if (ctrl->value) - gemtek_mute(rt); - else - gemtek_unmute(rt); - return 0; - case V4L2_CID_AUDIO_VOLUME: - if (ctrl->value) - gemtek_unmute(rt); + gemtek_mute(gt); else - gemtek_mute(rt); + gemtek_unmute(gt); 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; @@ -545,16 +502,20 @@ 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 != 0) ? -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 != 0) ? -EINVAL : 0; } static const struct v4l2_ioctl_ops gemtek_ioctl_ops = { @@ -572,62 +533,73 @@ static const struct v4l2_ioctl_ops gemtek_ioctl_ops = { .vidioc_s_ctrl = vidioc_s_ctrl }; -static struct video_device gemtek_radio = { - .name = "GemTek Radio card", - .fops = &gemtek_fops, - .ioctl_ops = &gemtek_ioctl_ops, - .release = video_device_release_empty, -}; - /* * Initialization / cleanup related stuff. */ -/* - * Initilize card. - */ static int __init gemtek_init(void) { - printk(KERN_INFO RADIO_BANNER "\n"); + struct gemtek *gt = &gemtek_card; + struct v4l2_device *v4l2_dev = >->v4l2_dev; + int res; - spin_lock_init(&lock); + strlcpy(v4l2_dev->name, "gemtek", sizeof(v4l2_dev->name)); - gemtek_probe(); - if (io) { - if (!request_region(io, 1, "gemtek")) { - printk(KERN_ERR "I/O port 0x%x already in use.\n", io); + v4l2_info(v4l2_dev, "GemTek Radio card driver: v0.0.3\n"); + + mutex_init(>->lock); + + gt->verified = -1; + gt->io = io; + gemtek_probe(gt); + if (gt->io) { + if (!request_region(gt->io, 1, "gemtek")) { + v4l2_err(v4l2_dev, "I/O port 0x%x already in use.\n", gt->io); return -EBUSY; } - if (!gemtek_verify(io)) - printk(KERN_WARNING "Card at I/O port 0x%x does not " + if (!gemtek_verify(gt, gt->io)) + v4l2_warn(v4l2_dev, "Card at I/O port 0x%x does not " "respond properly, check your " - "configuration.\n", io); + "configuration.\n", gt->io); else - printk(KERN_INFO "Using I/O port 0x%x.\n", io); + v4l2_info(v4l2_dev, "Using I/O port 0x%x.\n", gt->io); } else if (probe) { - printk(KERN_ERR "Automatic probing failed and no " + v4l2_err(v4l2_dev, "Automatic probing failed and no " "fixed I/O port defined.\n"); return -ENODEV; } else { - printk(KERN_ERR "Automatic probing disabled but no fixed " + v4l2_err(v4l2_dev, "Automatic probing disabled but no fixed " "I/O port defined."); return -EINVAL; } - video_set_drvdata(&gemtek_radio, &gemtek_unit); + res = v4l2_device_register(NULL, v4l2_dev); + if (res < 0) { + v4l2_err(v4l2_dev, "Could not register v4l2_device\n"); + release_region(gt->io, 1); + return res; + } - if (video_register_device(&gemtek_radio, VFL_TYPE_RADIO, radio_nr) < 0) { - release_region(io, 1); + strlcpy(gt->vdev.name, v4l2_dev->name, sizeof(gt->vdev.name)); + gt->vdev.v4l2_dev = v4l2_dev; + gt->vdev.fops = &gemtek_fops; + gt->vdev.ioctl_ops = &gemtek_ioctl_ops; + gt->vdev.release = video_device_release_empty; + video_set_drvdata(>->vdev, gt); + + if (video_register_device(>->vdev, VFL_TYPE_RADIO, radio_nr) < 0) { + v4l2_device_unregister(v4l2_dev); + release_region(gt->io, 1); return -EBUSY; } /* Set defaults */ - gemtek_unit.lastfreq = GEMTEK_LOWFREQ; - gemtek_unit.bu2614data = 0; + gt->lastfreq = GEMTEK_LOWFREQ; + gt->bu2614data = 0; if (initmute) - gemtek_mute(&gemtek_unit); + gemtek_mute(gt); return 0; } @@ -637,15 +609,19 @@ static int __init gemtek_init(void) */ static void __exit gemtek_exit(void) { + struct gemtek *gt = &gemtek_card; + struct v4l2_device *v4l2_dev = >->v4l2_dev; + if (shutdown) { hardmute = 1; /* Turn off PLL */ - gemtek_mute(&gemtek_unit); + gemtek_mute(gt); } else { - printk(KERN_INFO "Module unloaded but card not muted!\n"); + v4l2_info(v4l2_dev, "Module unloaded but card not muted!\n"); } - video_unregister_device(&gemtek_radio); - release_region(io, 1); + video_unregister_device(>->vdev); + v4l2_device_unregister(>->v4l2_dev); + release_region(gt->io, 1); } module_init(gemtek_init); |