Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* SF16FMI radio driver for Linux radio support |
| 2 | * heavily based on rtrack driver... |
| 3 | * (c) 1997 M. Kirkwood |
| 4 | * (c) 1998 Petr Vandrovec, vandrove@vc.cvut.cz |
| 5 | * |
| 6 | * Fitted to new interface by Alan Cox <alan.cox@linux.org> |
| 7 | * Made working and cleaned up functions <mikael.hedin@irf.se> |
| 8 | * Support for ISAPnP by Ladislav Michl <ladis@psi.cz> |
| 9 | * |
| 10 | * Notes on the hardware |
| 11 | * |
| 12 | * Frequency control is done digitally -- ie out(port,encodefreq(95.8)); |
| 13 | * No volume control - only mute/unmute - you have to use line volume |
| 14 | * control on SB-part of SF16FMI |
Mauro Carvalho Chehab | 4286c6f | 2006-04-08 16:06:16 -0300 | [diff] [blame] | 15 | * |
Mauro Carvalho Chehab | a2ef73a | 2006-08-08 09:10:02 -0300 | [diff] [blame^] | 16 | * Converted to V4L2 API by Mauro Carvalho Chehab <mchehab@infradead.org> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 17 | */ |
| 18 | |
| 19 | #include <linux/kernel.h> /* __setup */ |
| 20 | #include <linux/module.h> /* Modules */ |
| 21 | #include <linux/init.h> /* Initdata */ |
Peter Osterlund | fb911ee | 2005-09-13 01:25:15 -0700 | [diff] [blame] | 22 | #include <linux/ioport.h> /* request_region */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 23 | #include <linux/delay.h> /* udelay */ |
Mauro Carvalho Chehab | a2ef73a | 2006-08-08 09:10:02 -0300 | [diff] [blame^] | 24 | #include <linux/videodev2.h> /* kernel radio structs */ |
Mauro Carvalho Chehab | 5e87efa | 2006-06-05 10:26:32 -0300 | [diff] [blame] | 25 | #include <media/v4l2-common.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 26 | #include <linux/isapnp.h> |
| 27 | #include <asm/io.h> /* outb, outb_p */ |
| 28 | #include <asm/uaccess.h> /* copy to/from user */ |
Ingo Molnar | 3593cab | 2006-02-07 06:49:14 -0200 | [diff] [blame] | 29 | #include <linux/mutex.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 30 | |
Mauro Carvalho Chehab | a2ef73a | 2006-08-08 09:10:02 -0300 | [diff] [blame^] | 31 | #define RADIO_VERSION KERNEL_VERSION(0,0,2) |
| 32 | |
| 33 | static struct v4l2_queryctrl radio_qctrl[] = { |
| 34 | { |
| 35 | .id = V4L2_CID_AUDIO_MUTE, |
| 36 | .name = "Mute", |
| 37 | .minimum = 0, |
| 38 | .maximum = 1, |
| 39 | .default_value = 1, |
| 40 | .type = V4L2_CTRL_TYPE_BOOLEAN, |
| 41 | } |
| 42 | }; |
| 43 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 44 | struct fmi_device |
| 45 | { |
| 46 | int port; |
Mauro Carvalho Chehab | 4286c6f | 2006-04-08 16:06:16 -0300 | [diff] [blame] | 47 | int curvol; /* 1 or 0 */ |
| 48 | unsigned long curfreq; /* freq in kHz */ |
| 49 | __u32 flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 50 | }; |
| 51 | |
Mauro Carvalho Chehab | 4286c6f | 2006-04-08 16:06:16 -0300 | [diff] [blame] | 52 | static int io = -1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 53 | static int radio_nr = -1; |
| 54 | static struct pnp_dev *dev = NULL; |
Ingo Molnar | 3593cab | 2006-02-07 06:49:14 -0200 | [diff] [blame] | 55 | static struct mutex lock; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 56 | |
| 57 | /* freq is in 1/16 kHz to internal number, hw precision is 50 kHz */ |
| 58 | /* It is only useful to give freq in intervall of 800 (=0.05Mhz), |
Mauro Carvalho Chehab | 4286c6f | 2006-04-08 16:06:16 -0300 | [diff] [blame] | 59 | * other bits will be truncated, e.g 92.7400016 -> 92.7, but |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 60 | * 92.7400017 -> 92.75 |
| 61 | */ |
| 62 | #define RSF16_ENCODE(x) ((x)/800+214) |
| 63 | #define RSF16_MINFREQ 87*16000 |
| 64 | #define RSF16_MAXFREQ 108*16000 |
| 65 | |
| 66 | static void outbits(int bits, unsigned int data, int port) |
| 67 | { |
| 68 | while(bits--) { |
Mauro Carvalho Chehab | 4286c6f | 2006-04-08 16:06:16 -0300 | [diff] [blame] | 69 | if(data & 1) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 70 | outb(5, port); |
| 71 | udelay(6); |
| 72 | outb(7, port); |
| 73 | udelay(6); |
| 74 | } else { |
| 75 | outb(1, port); |
| 76 | udelay(6); |
| 77 | outb(3, port); |
| 78 | udelay(6); |
| 79 | } |
| 80 | data>>=1; |
| 81 | } |
| 82 | } |
| 83 | |
| 84 | static inline void fmi_mute(int port) |
| 85 | { |
Ingo Molnar | 3593cab | 2006-02-07 06:49:14 -0200 | [diff] [blame] | 86 | mutex_lock(&lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 87 | outb(0x00, port); |
Ingo Molnar | 3593cab | 2006-02-07 06:49:14 -0200 | [diff] [blame] | 88 | mutex_unlock(&lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 89 | } |
| 90 | |
| 91 | static inline void fmi_unmute(int port) |
| 92 | { |
Ingo Molnar | 3593cab | 2006-02-07 06:49:14 -0200 | [diff] [blame] | 93 | mutex_lock(&lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 94 | outb(0x08, port); |
Ingo Molnar | 3593cab | 2006-02-07 06:49:14 -0200 | [diff] [blame] | 95 | mutex_unlock(&lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 96 | } |
| 97 | |
| 98 | static inline int fmi_setfreq(struct fmi_device *dev) |
| 99 | { |
| 100 | int myport = dev->port; |
| 101 | unsigned long freq = dev->curfreq; |
| 102 | |
Ingo Molnar | 3593cab | 2006-02-07 06:49:14 -0200 | [diff] [blame] | 103 | mutex_lock(&lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 104 | |
| 105 | outbits(16, RSF16_ENCODE(freq), myport); |
| 106 | outbits(8, 0xC0, myport); |
| 107 | msleep(143); /* was schedule_timeout(HZ/7) */ |
Ingo Molnar | 3593cab | 2006-02-07 06:49:14 -0200 | [diff] [blame] | 108 | mutex_unlock(&lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 109 | if (dev->curvol) fmi_unmute(myport); |
| 110 | return 0; |
| 111 | } |
| 112 | |
| 113 | static inline int fmi_getsigstr(struct fmi_device *dev) |
| 114 | { |
| 115 | int val; |
| 116 | int res; |
| 117 | int myport = dev->port; |
| 118 | |
Mauro Carvalho Chehab | 4286c6f | 2006-04-08 16:06:16 -0300 | [diff] [blame] | 119 | |
Ingo Molnar | 3593cab | 2006-02-07 06:49:14 -0200 | [diff] [blame] | 120 | mutex_lock(&lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 121 | val = dev->curvol ? 0x08 : 0x00; /* unmute/mute */ |
| 122 | outb(val, myport); |
| 123 | outb(val | 0x10, myport); |
| 124 | msleep(143); /* was schedule_timeout(HZ/7) */ |
| 125 | res = (int)inb(myport+1); |
| 126 | outb(val, myport); |
Mauro Carvalho Chehab | 4286c6f | 2006-04-08 16:06:16 -0300 | [diff] [blame] | 127 | |
Ingo Molnar | 3593cab | 2006-02-07 06:49:14 -0200 | [diff] [blame] | 128 | mutex_unlock(&lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 129 | return (res & 2) ? 0 : 0xFFFF; |
| 130 | } |
| 131 | |
| 132 | static int fmi_do_ioctl(struct inode *inode, struct file *file, |
| 133 | unsigned int cmd, void *arg) |
| 134 | { |
| 135 | struct video_device *dev = video_devdata(file); |
| 136 | struct fmi_device *fmi=dev->priv; |
Mauro Carvalho Chehab | 4286c6f | 2006-04-08 16:06:16 -0300 | [diff] [blame] | 137 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 138 | switch(cmd) |
| 139 | { |
Mauro Carvalho Chehab | a2ef73a | 2006-08-08 09:10:02 -0300 | [diff] [blame^] | 140 | case VIDIOC_QUERYCAP: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 141 | { |
Mauro Carvalho Chehab | a2ef73a | 2006-08-08 09:10:02 -0300 | [diff] [blame^] | 142 | struct v4l2_capability *v = arg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 143 | memset(v,0,sizeof(*v)); |
Mauro Carvalho Chehab | a2ef73a | 2006-08-08 09:10:02 -0300 | [diff] [blame^] | 144 | strlcpy(v->driver, "radio-sf16fmi", sizeof (v->driver)); |
| 145 | strlcpy(v->card, "SF16-FMx radio", sizeof (v->card)); |
| 146 | sprintf(v->bus_info,"ISA"); |
| 147 | v->version = RADIO_VERSION; |
| 148 | v->capabilities = V4L2_CAP_TUNER; |
| 149 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 150 | return 0; |
| 151 | } |
Mauro Carvalho Chehab | a2ef73a | 2006-08-08 09:10:02 -0300 | [diff] [blame^] | 152 | case VIDIOC_G_TUNER: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 153 | { |
Mauro Carvalho Chehab | a2ef73a | 2006-08-08 09:10:02 -0300 | [diff] [blame^] | 154 | struct v4l2_tuner *v = arg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 155 | int mult; |
| 156 | |
Mauro Carvalho Chehab | a2ef73a | 2006-08-08 09:10:02 -0300 | [diff] [blame^] | 157 | if (v->index > 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 158 | return -EINVAL; |
Mauro Carvalho Chehab | a2ef73a | 2006-08-08 09:10:02 -0300 | [diff] [blame^] | 159 | |
| 160 | memset(v,0,sizeof(*v)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 161 | strcpy(v->name, "FM"); |
Mauro Carvalho Chehab | a2ef73a | 2006-08-08 09:10:02 -0300 | [diff] [blame^] | 162 | v->type = V4L2_TUNER_RADIO; |
| 163 | |
| 164 | mult = (fmi->flags & V4L2_TUNER_CAP_LOW) ? 1 : 1000; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 165 | v->rangelow = RSF16_MINFREQ/mult; |
| 166 | v->rangehigh = RSF16_MAXFREQ/mult; |
Mauro Carvalho Chehab | a2ef73a | 2006-08-08 09:10:02 -0300 | [diff] [blame^] | 167 | v->rxsubchans =V4L2_TUNER_SUB_MONO | V4L2_TUNER_MODE_STEREO; |
| 168 | v->capability=fmi->flags; |
| 169 | v->audmode = V4L2_TUNER_MODE_STEREO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 170 | v->signal = fmi_getsigstr(fmi); |
Mauro Carvalho Chehab | a2ef73a | 2006-08-08 09:10:02 -0300 | [diff] [blame^] | 171 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 172 | return 0; |
| 173 | } |
Mauro Carvalho Chehab | a2ef73a | 2006-08-08 09:10:02 -0300 | [diff] [blame^] | 174 | case VIDIOC_S_TUNER: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 175 | { |
Mauro Carvalho Chehab | a2ef73a | 2006-08-08 09:10:02 -0300 | [diff] [blame^] | 176 | struct v4l2_tuner *v = arg; |
| 177 | |
| 178 | if (v->index > 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 179 | return -EINVAL; |
Mauro Carvalho Chehab | a2ef73a | 2006-08-08 09:10:02 -0300 | [diff] [blame^] | 180 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 181 | return 0; |
| 182 | } |
Mauro Carvalho Chehab | a2ef73a | 2006-08-08 09:10:02 -0300 | [diff] [blame^] | 183 | case VIDIOC_S_FREQUENCY: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 184 | { |
Mauro Carvalho Chehab | a2ef73a | 2006-08-08 09:10:02 -0300 | [diff] [blame^] | 185 | struct v4l2_frequency *f = arg; |
| 186 | |
| 187 | if (!(fmi->flags & V4L2_TUNER_CAP_LOW)) |
| 188 | f->frequency *= 1000; |
| 189 | if (f->frequency < RSF16_MINFREQ || |
| 190 | f->frequency > RSF16_MAXFREQ ) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 191 | return -EINVAL; |
| 192 | /*rounding in steps of 800 to match th freq |
| 193 | that will be used */ |
Mauro Carvalho Chehab | a2ef73a | 2006-08-08 09:10:02 -0300 | [diff] [blame^] | 194 | fmi->curfreq = (f->frequency/800)*800; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 195 | fmi_setfreq(fmi); |
Mauro Carvalho Chehab | a2ef73a | 2006-08-08 09:10:02 -0300 | [diff] [blame^] | 196 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 197 | return 0; |
| 198 | } |
Mauro Carvalho Chehab | a2ef73a | 2006-08-08 09:10:02 -0300 | [diff] [blame^] | 199 | case VIDIOC_G_FREQUENCY: |
Mauro Carvalho Chehab | 4286c6f | 2006-04-08 16:06:16 -0300 | [diff] [blame] | 200 | { |
Mauro Carvalho Chehab | a2ef73a | 2006-08-08 09:10:02 -0300 | [diff] [blame^] | 201 | struct v4l2_frequency *f = arg; |
| 202 | |
| 203 | f->type = V4L2_TUNER_RADIO; |
| 204 | f->frequency = fmi->curfreq; |
| 205 | if (!(fmi->flags & V4L2_TUNER_CAP_LOW)) |
| 206 | f->frequency /= 1000; |
| 207 | |
Mauro Carvalho Chehab | 4286c6f | 2006-04-08 16:06:16 -0300 | [diff] [blame] | 208 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 209 | } |
Mauro Carvalho Chehab | a2ef73a | 2006-08-08 09:10:02 -0300 | [diff] [blame^] | 210 | case VIDIOC_QUERYCTRL: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 211 | { |
Mauro Carvalho Chehab | a2ef73a | 2006-08-08 09:10:02 -0300 | [diff] [blame^] | 212 | struct v4l2_queryctrl *qc = arg; |
| 213 | int i; |
| 214 | |
| 215 | for (i = 0; i < ARRAY_SIZE(radio_qctrl); i++) { |
| 216 | if (qc->id && qc->id == radio_qctrl[i].id) { |
| 217 | memcpy(qc, &(radio_qctrl[i]), |
| 218 | sizeof(*qc)); |
| 219 | return (0); |
| 220 | } |
| 221 | } |
| 222 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 223 | } |
Mauro Carvalho Chehab | a2ef73a | 2006-08-08 09:10:02 -0300 | [diff] [blame^] | 224 | case VIDIOC_G_CTRL: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 225 | { |
Mauro Carvalho Chehab | a2ef73a | 2006-08-08 09:10:02 -0300 | [diff] [blame^] | 226 | struct v4l2_control *ctrl= arg; |
| 227 | |
| 228 | switch (ctrl->id) { |
| 229 | case V4L2_CID_AUDIO_MUTE: |
| 230 | ctrl->value=fmi->curvol; |
| 231 | return (0); |
| 232 | } |
| 233 | return -EINVAL; |
| 234 | } |
| 235 | case VIDIOC_S_CTRL: |
| 236 | { |
| 237 | struct v4l2_control *ctrl= arg; |
| 238 | |
| 239 | switch (ctrl->id) { |
| 240 | case V4L2_CID_AUDIO_MUTE: |
| 241 | { |
| 242 | if (ctrl->value) |
| 243 | fmi_mute(fmi->port); |
| 244 | else |
| 245 | fmi_unmute(fmi->port); |
| 246 | |
| 247 | fmi->curvol=ctrl->value; |
| 248 | return (0); |
| 249 | } |
| 250 | } |
| 251 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 252 | } |
| 253 | default: |
Mauro Carvalho Chehab | a2ef73a | 2006-08-08 09:10:02 -0300 | [diff] [blame^] | 254 | return v4l_compat_translate_ioctl(inode,file,cmd,arg, |
| 255 | fmi_do_ioctl); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 256 | } |
| 257 | } |
| 258 | |
| 259 | static int fmi_ioctl(struct inode *inode, struct file *file, |
| 260 | unsigned int cmd, unsigned long arg) |
| 261 | { |
| 262 | return video_usercopy(inode, file, cmd, arg, fmi_do_ioctl); |
| 263 | } |
| 264 | |
| 265 | static struct fmi_device fmi_unit; |
| 266 | |
| 267 | static struct file_operations fmi_fops = { |
| 268 | .owner = THIS_MODULE, |
| 269 | .open = video_exclusive_open, |
| 270 | .release = video_exclusive_release, |
| 271 | .ioctl = fmi_ioctl, |
Arnd Bergmann | 0d0fbf8 | 2006-01-09 15:24:57 -0200 | [diff] [blame] | 272 | .compat_ioctl = v4l_compat_ioctl32, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 273 | .llseek = no_llseek, |
| 274 | }; |
| 275 | |
| 276 | static struct video_device fmi_radio= |
| 277 | { |
| 278 | .owner = THIS_MODULE, |
| 279 | .name = "SF16FMx radio", |
| 280 | .type = VID_TYPE_TUNER, |
Mauro Carvalho Chehab | a2ef73a | 2006-08-08 09:10:02 -0300 | [diff] [blame^] | 281 | .hardware = 0, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 282 | .fops = &fmi_fops, |
| 283 | }; |
| 284 | |
| 285 | /* ladis: this is my card. does any other types exist? */ |
| 286 | static struct isapnp_device_id id_table[] __devinitdata = { |
| 287 | { ISAPNP_ANY_ID, ISAPNP_ANY_ID, |
| 288 | ISAPNP_VENDOR('M','F','R'), ISAPNP_FUNCTION(0xad10), 0}, |
| 289 | { ISAPNP_CARD_END, }, |
| 290 | }; |
| 291 | |
| 292 | MODULE_DEVICE_TABLE(isapnp, id_table); |
| 293 | |
| 294 | static int isapnp_fmi_probe(void) |
| 295 | { |
| 296 | int i = 0; |
| 297 | |
| 298 | while (id_table[i].card_vendor != 0 && dev == NULL) { |
| 299 | dev = pnp_find_dev(NULL, id_table[i].vendor, |
| 300 | id_table[i].function, NULL); |
| 301 | i++; |
| 302 | } |
| 303 | |
| 304 | if (!dev) |
| 305 | return -ENODEV; |
| 306 | if (pnp_device_attach(dev) < 0) |
| 307 | return -EAGAIN; |
| 308 | if (pnp_activate_dev(dev) < 0) { |
| 309 | printk ("radio-sf16fmi: PnP configure failed (out of resources?)\n"); |
| 310 | pnp_device_detach(dev); |
| 311 | return -ENOMEM; |
| 312 | } |
| 313 | if (!pnp_port_valid(dev, 0)) { |
| 314 | pnp_device_detach(dev); |
| 315 | return -ENODEV; |
| 316 | } |
| 317 | |
| 318 | i = pnp_port_start(dev, 0); |
| 319 | printk ("radio-sf16fmi: PnP reports card at %#x\n", i); |
| 320 | |
| 321 | return i; |
| 322 | } |
| 323 | |
| 324 | static int __init fmi_init(void) |
| 325 | { |
| 326 | if (io < 0) |
| 327 | io = isapnp_fmi_probe(); |
| 328 | if (io < 0) { |
| 329 | printk(KERN_ERR "radio-sf16fmi: No PnP card found.\n"); |
| 330 | return io; |
| 331 | } |
| 332 | if (!request_region(io, 2, "radio-sf16fmi")) { |
| 333 | printk(KERN_ERR "radio-sf16fmi: port 0x%x already in use\n", io); |
| 334 | return -EBUSY; |
| 335 | } |
| 336 | |
| 337 | fmi_unit.port = io; |
| 338 | fmi_unit.curvol = 0; |
| 339 | fmi_unit.curfreq = 0; |
Mauro Carvalho Chehab | a2ef73a | 2006-08-08 09:10:02 -0300 | [diff] [blame^] | 340 | fmi_unit.flags = V4L2_TUNER_CAP_LOW; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 341 | fmi_radio.priv = &fmi_unit; |
Mauro Carvalho Chehab | 4286c6f | 2006-04-08 16:06:16 -0300 | [diff] [blame] | 342 | |
Ingo Molnar | 3593cab | 2006-02-07 06:49:14 -0200 | [diff] [blame] | 343 | mutex_init(&lock); |
Mauro Carvalho Chehab | 4286c6f | 2006-04-08 16:06:16 -0300 | [diff] [blame] | 344 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 345 | if (video_register_device(&fmi_radio, VFL_TYPE_RADIO, radio_nr) == -1) { |
| 346 | release_region(io, 2); |
| 347 | return -EINVAL; |
| 348 | } |
Mauro Carvalho Chehab | 4286c6f | 2006-04-08 16:06:16 -0300 | [diff] [blame] | 349 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 350 | printk(KERN_INFO "SF16FMx radio card driver at 0x%x\n", io); |
| 351 | /* mute card - prevents noisy bootups */ |
| 352 | fmi_mute(io); |
| 353 | return 0; |
| 354 | } |
| 355 | |
| 356 | MODULE_AUTHOR("Petr Vandrovec, vandrove@vc.cvut.cz and M. Kirkwood"); |
| 357 | MODULE_DESCRIPTION("A driver for the SF16MI radio."); |
| 358 | MODULE_LICENSE("GPL"); |
| 359 | |
| 360 | module_param(io, int, 0); |
| 361 | MODULE_PARM_DESC(io, "I/O address of the SF16MI card (0x284 or 0x384)"); |
| 362 | module_param(radio_nr, int, 0); |
| 363 | |
| 364 | static void __exit fmi_cleanup_module(void) |
| 365 | { |
| 366 | video_unregister_device(&fmi_radio); |
| 367 | release_region(io, 2); |
| 368 | if (dev) |
| 369 | pnp_device_detach(dev); |
| 370 | } |
| 371 | |
| 372 | module_init(fmi_init); |
| 373 | module_exit(fmi_cleanup_module); |