2005-04-16 18:20:36 -04:00
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/* SF16FMR2 radio driver for Linux radio support
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* heavily based on fmi driver...
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* (c) 2000-2002 Ziglio Frediano, freddy77@angelfire.com
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*
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* Notes on the hardware
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*
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* Frequency control is done digitally -- ie out(port,encodefreq(95.8));
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* No volume control - only mute/unmute - you have to use line volume
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*
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* For read stereo/mono you must wait 0.1 sec after set frequency and
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* card unmuted so I set frequency on unmute
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* Signal handling seem to work only on autoscanning (not implemented)
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2006-08-08 08:10:02 -04:00
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*
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* Converted to V4L2 API by Mauro Carvalho Chehab <mchehab@infradead.org>
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2005-04-16 18:20:36 -04:00
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*/
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#include <linux/module.h> /* Modules */
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#include <linux/init.h> /* Initdata */
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2005-09-13 04:25:15 -04:00
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#include <linux/ioport.h> /* request_region */
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2005-04-16 18:20:36 -04:00
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#include <linux/delay.h> /* udelay */
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#include <asm/io.h> /* outb, outb_p */
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#include <asm/uaccess.h> /* copy to/from user */
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2006-08-08 08:10:02 -04:00
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#include <linux/videodev2.h> /* kernel radio structs */
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2006-06-05 09:26:32 -04:00
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#include <media/v4l2-common.h>
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2008-07-20 07:12:02 -04:00
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#include <media/v4l2-ioctl.h>
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2006-02-07 03:49:14 -05:00
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#include <linux/mutex.h>
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2005-04-16 18:20:36 -04:00
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2006-08-08 08:10:06 -04:00
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static struct mutex lock;
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#include <linux/version.h> /* for KERNEL_VERSION MACRO */
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2006-08-08 08:10:02 -04:00
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#define RADIO_VERSION KERNEL_VERSION(0,0,2)
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2008-04-22 13:46:03 -04:00
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#define AUD_VOL_INDEX 1
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2006-08-08 08:10:02 -04:00
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static struct v4l2_queryctrl radio_qctrl[] = {
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{
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.id = V4L2_CID_AUDIO_MUTE,
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.name = "Mute",
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.minimum = 0,
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.maximum = 1,
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.default_value = 1,
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.type = V4L2_CTRL_TYPE_BOOLEAN,
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2008-04-22 13:46:03 -04:00
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},
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[AUD_VOL_INDEX] = {
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2006-08-08 08:10:02 -04:00
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.id = V4L2_CID_AUDIO_VOLUME,
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.name = "Volume",
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.minimum = 0,
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2008-04-22 13:46:03 -04:00
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.maximum = 15,
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.step = 1,
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.default_value = 0,
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2006-08-08 08:10:02 -04:00
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.type = V4L2_CTRL_TYPE_INTEGER,
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}
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};
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2005-04-16 18:20:36 -04:00
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#undef DEBUG
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//#define DEBUG 1
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#ifdef DEBUG
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# define debug_print(s) printk s
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#else
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# define debug_print(s)
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#endif
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/* this should be static vars for module size */
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struct fmr2_device
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{
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2008-08-23 03:49:13 -04:00
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unsigned long in_use;
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2005-04-16 18:20:36 -04:00
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int port;
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2008-04-22 13:46:03 -04:00
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int curvol; /* 0-15 */
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2005-04-16 18:20:36 -04:00
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int mute;
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int stereo; /* card is producing stereo audio */
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unsigned long curfreq; /* freq in kHz */
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int card_type;
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__u32 flags;
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};
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static int io = 0x384;
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static int radio_nr = -1;
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/* hw precision is 12.5 kHz
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2006-01-09 18:08:17 -05:00
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* It is only useful to give freq in intervall of 200 (=0.0125Mhz),
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2005-04-16 18:20:36 -04:00
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* other bits will be truncated
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*/
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#define RSF16_ENCODE(x) ((x)/200+856)
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#define RSF16_MINFREQ 87*16000
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#define RSF16_MAXFREQ 108*16000
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static inline void wait(int n,int port)
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{
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for (;n;--n) inb(port);
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}
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static void outbits(int bits, unsigned int data, int nWait, int port)
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{
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int bit;
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for(;--bits>=0;) {
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bit = (data>>bits) & 1;
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outb(bit,port);
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wait(nWait,port);
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outb(bit|2,port);
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wait(nWait,port);
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outb(bit,port);
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wait(nWait,port);
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}
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}
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static inline void fmr2_mute(int port)
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{
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outb(0x00, port);
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wait(4,port);
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}
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static inline void fmr2_unmute(int port)
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{
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outb(0x04, port);
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wait(4,port);
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}
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static inline int fmr2_stereo_mode(int port)
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{
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int n = inb(port);
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outb(6,port);
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inb(port);
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n = ((n>>3)&1)^1;
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debug_print((KERN_DEBUG "stereo: %d\n", n));
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return n;
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}
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static int fmr2_product_info(struct fmr2_device *dev)
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{
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int n = inb(dev->port);
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n &= 0xC1;
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if (n == 0)
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{
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/* this should support volume set */
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dev->card_type = 12;
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return 0;
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}
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/* not volume (mine is 11) */
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dev->card_type = (n==128)?11:0;
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return n;
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}
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static inline int fmr2_getsigstr(struct fmr2_device *dev)
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{
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/* !!! work only if scanning freq */
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int port = dev->port, res = 0xffff;
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outb(5,port);
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wait(4,port);
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if (!(inb(port)&1)) res = 0;
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debug_print((KERN_DEBUG "signal: %d\n", res));
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return res;
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}
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/* set frequency and unmute card */
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static int fmr2_setfreq(struct fmr2_device *dev)
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{
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int port = dev->port;
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unsigned long freq = dev->curfreq;
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fmr2_mute(port);
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/* 0x42 for mono output
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* 0x102 forward scanning
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* 0x182 scansione avanti
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*/
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outbits(9,0x2,3,port);
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outbits(16,RSF16_ENCODE(freq),2,port);
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fmr2_unmute(port);
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/* wait 0.11 sec */
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msleep(110);
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/* NOTE if mute this stop radio
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you must set freq on unmute */
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dev->stereo = fmr2_stereo_mode(port);
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return 0;
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}
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/* !!! not tested, in my card this does't work !!! */
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static int fmr2_setvolume(struct fmr2_device *dev)
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{
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2008-04-22 13:46:03 -04:00
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int vol[16] = { 0x021, 0x084, 0x090, 0x104,
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0x110, 0x204, 0x210, 0x402,
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0x404, 0x408, 0x410, 0x801,
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0x802, 0x804, 0x808, 0x810 };
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int i, a, port = dev->port;
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int n = vol[dev->curvol & 0x0f];
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2005-04-16 18:20:36 -04:00
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2008-04-22 13:46:03 -04:00
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if (dev->card_type != 11)
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return 1;
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2005-04-16 18:20:36 -04:00
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2008-04-22 13:46:03 -04:00
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for (i = 12; --i >= 0; ) {
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2005-04-16 18:20:36 -04:00
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a = ((n >> i) & 1) << 6; /* if (a=0) a= 0; else a= 0x40; */
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2008-04-22 13:46:03 -04:00
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outb(a | 4, port);
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wait(4, port);
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outb(a | 0x24, port);
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wait(4, port);
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outb(a | 4, port);
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wait(4, port);
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2005-04-16 18:20:36 -04:00
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}
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2008-04-22 13:46:03 -04:00
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for (i = 6; --i >= 0; ) {
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2005-04-16 18:20:36 -04:00
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a = ((0x18 >> i) & 1) << 6;
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2008-04-22 13:46:03 -04:00
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outb(a | 4, port);
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2005-04-16 18:20:36 -04:00
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wait(4,port);
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2008-04-22 13:46:03 -04:00
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outb(a | 0x24, port);
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2005-04-16 18:20:36 -04:00
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wait(4,port);
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outb(a|4, port);
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wait(4,port);
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}
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2008-04-22 13:46:03 -04:00
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wait(4, port);
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2005-04-16 18:20:36 -04:00
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outb(0x14, port);
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return 0;
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}
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2007-04-23 16:51:37 -04:00
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static int vidioc_querycap(struct file *file, void *priv,
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struct v4l2_capability *v)
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2005-04-16 18:20:36 -04:00
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{
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2007-04-23 16:51:37 -04:00
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strlcpy(v->driver, "radio-sf16fmr2", sizeof(v->driver));
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strlcpy(v->card, "SF16-FMR2 radio", sizeof(v->card));
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sprintf(v->bus_info, "ISA");
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v->version = RADIO_VERSION;
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v->capabilities = V4L2_CAP_TUNER;
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return 0;
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}
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static int vidioc_g_tuner(struct file *file, void *priv,
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struct v4l2_tuner *v)
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{
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int mult;
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2008-08-23 07:32:09 -04:00
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struct fmr2_device *fmr2 = video_drvdata(file);
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2005-04-16 18:20:36 -04:00
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2007-04-23 16:51:37 -04:00
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if (v->index > 0)
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return -EINVAL;
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strcpy(v->name, "FM");
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v->type = V4L2_TUNER_RADIO;
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mult = (fmr2->flags & V4L2_TUNER_CAP_LOW) ? 1 : 1000;
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v->rangelow = RSF16_MINFREQ/mult;
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v->rangehigh = RSF16_MAXFREQ/mult;
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v->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_MODE_STEREO;
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v->capability = fmr2->flags&V4L2_TUNER_CAP_LOW;
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v->audmode = fmr2->stereo ? V4L2_TUNER_MODE_STEREO:
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V4L2_TUNER_MODE_MONO;
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mutex_lock(&lock);
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v->signal = fmr2_getsigstr(fmr2);
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mutex_unlock(&lock);
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return 0;
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}
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2006-08-08 08:10:02 -04:00
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2007-04-23 16:51:37 -04:00
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static int vidioc_s_tuner(struct file *file, void *priv,
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struct v4l2_tuner *v)
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{
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if (v->index > 0)
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return -EINVAL;
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return 0;
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}
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2006-08-08 08:10:02 -04:00
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2007-04-23 16:51:37 -04:00
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static int vidioc_s_frequency(struct file *file, void *priv,
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struct v4l2_frequency *f)
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{
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2008-08-23 07:32:09 -04:00
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struct fmr2_device *fmr2 = video_drvdata(file);
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2006-08-08 08:10:02 -04:00
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2007-04-23 16:51:37 -04:00
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if (!(fmr2->flags & V4L2_TUNER_CAP_LOW))
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f->frequency *= 1000;
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if (f->frequency < RSF16_MINFREQ ||
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f->frequency > RSF16_MAXFREQ )
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return -EINVAL;
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/*rounding in steps of 200 to match th freq
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that will be used */
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fmr2->curfreq = (f->frequency/200)*200;
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/* set card freq (if not muted) */
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if (fmr2->curvol && !fmr2->mute) {
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mutex_lock(&lock);
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fmr2_setfreq(fmr2);
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mutex_unlock(&lock);
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}
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return 0;
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}
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2006-08-08 08:10:02 -04:00
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2007-04-23 16:51:37 -04:00
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static int vidioc_g_frequency(struct file *file, void *priv,
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struct v4l2_frequency *f)
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{
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2008-08-23 07:32:09 -04:00
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struct fmr2_device *fmr2 = video_drvdata(file);
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2006-08-08 08:10:02 -04:00
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2007-04-23 16:51:37 -04:00
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f->type = V4L2_TUNER_RADIO;
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f->frequency = fmr2->curfreq;
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if (!(fmr2->flags & V4L2_TUNER_CAP_LOW))
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f->frequency /= 1000;
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return 0;
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}
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2006-08-08 08:10:02 -04:00
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2007-04-23 16:51:37 -04:00
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static int vidioc_queryctrl(struct file *file, void *priv,
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struct v4l2_queryctrl *qc)
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{
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int i;
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2006-08-08 08:10:02 -04:00
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2007-04-23 16:51:37 -04:00
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for (i = 0; i < ARRAY_SIZE(radio_qctrl); i++) {
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if (qc->id && qc->id == radio_qctrl[i].id) {
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2008-04-22 13:46:03 -04:00
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memcpy(qc, &radio_qctrl[i], sizeof(*qc));
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2005-04-16 18:20:36 -04:00
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return 0;
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}
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2007-04-23 16:51:37 -04:00
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}
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return -EINVAL;
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}
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static int vidioc_g_ctrl(struct file *file, void *priv,
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struct v4l2_control *ctrl)
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{
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2008-08-23 07:32:09 -04:00
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struct fmr2_device *fmr2 = video_drvdata(file);
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2007-04-23 16:51:37 -04:00
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switch (ctrl->id) {
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case V4L2_CID_AUDIO_MUTE:
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ctrl->value = fmr2->mute;
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return 0;
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case V4L2_CID_AUDIO_VOLUME:
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ctrl->value = fmr2->curvol;
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return 0;
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}
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return -EINVAL;
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}
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|
|
static int vidioc_s_ctrl(struct file *file, void *priv,
|
|
|
|
struct v4l2_control *ctrl)
|
|
|
|
{
|
2008-08-23 07:32:09 -04:00
|
|
|
struct fmr2_device *fmr2 = video_drvdata(file);
|
2007-04-23 16:51:37 -04:00
|
|
|
|
|
|
|
switch (ctrl->id) {
|
|
|
|
case V4L2_CID_AUDIO_MUTE:
|
|
|
|
fmr2->mute = ctrl->value;
|
|
|
|
break;
|
|
|
|
case V4L2_CID_AUDIO_VOLUME:
|
2008-04-22 13:46:03 -04:00
|
|
|
if (ctrl->value > radio_qctrl[AUD_VOL_INDEX].maximum)
|
|
|
|
fmr2->curvol = radio_qctrl[AUD_VOL_INDEX].maximum;
|
|
|
|
else
|
|
|
|
fmr2->curvol = ctrl->value;
|
|
|
|
|
2007-04-23 16:51:37 -04:00
|
|
|
break;
|
|
|
|
default:
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
|
2005-04-16 18:20:36 -04:00
|
|
|
#ifdef DEBUG
|
2007-04-23 16:51:37 -04:00
|
|
|
if (fmr2->curvol && !fmr2->mute)
|
|
|
|
printk(KERN_DEBUG "unmute\n");
|
|
|
|
else
|
|
|
|
printk(KERN_DEBUG "mute\n");
|
2005-04-16 18:20:36 -04:00
|
|
|
#endif
|
2006-08-08 08:10:02 -04:00
|
|
|
|
2007-04-23 16:51:37 -04:00
|
|
|
mutex_lock(&lock);
|
|
|
|
if (fmr2->curvol && !fmr2->mute) {
|
|
|
|
fmr2_setvolume(fmr2);
|
2008-04-22 13:46:03 -04:00
|
|
|
/* Set frequency and unmute card */
|
2007-04-23 16:51:37 -04:00
|
|
|
fmr2_setfreq(fmr2);
|
|
|
|
} else
|
|
|
|
fmr2_mute(fmr2->port);
|
|
|
|
mutex_unlock(&lock);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
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;
|
|
|
|
return 0;
|
2005-04-16 18:20:36 -04:00
|
|
|
}
|
|
|
|
|
2007-04-23 16:51:37 -04:00
|
|
|
static int vidioc_s_input(struct file *filp, void *priv, unsigned int i)
|
|
|
|
{
|
|
|
|
if (i != 0)
|
|
|
|
return -EINVAL;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int vidioc_s_audio(struct file *file, void *priv,
|
|
|
|
struct v4l2_audio *a)
|
|
|
|
{
|
|
|
|
if (a->index != 0)
|
|
|
|
return -EINVAL;
|
|
|
|
return 0;
|
2005-04-16 18:20:36 -04:00
|
|
|
}
|
|
|
|
|
|
|
|
static struct fmr2_device fmr2_unit;
|
|
|
|
|
2008-08-23 03:49:13 -04:00
|
|
|
static int fmr2_exclusive_open(struct inode *inode, struct file *file)
|
|
|
|
{
|
|
|
|
return test_and_set_bit(0, &fmr2_unit.in_use) ? -EBUSY : 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int fmr2_exclusive_release(struct inode *inode, struct file *file)
|
|
|
|
{
|
|
|
|
clear_bit(0, &fmr2_unit.in_use);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2007-02-12 03:55:33 -05:00
|
|
|
static const struct file_operations fmr2_fops = {
|
2005-04-16 18:20:36 -04:00
|
|
|
.owner = THIS_MODULE,
|
2008-08-23 03:49:13 -04:00
|
|
|
.open = fmr2_exclusive_open,
|
|
|
|
.release = fmr2_exclusive_release,
|
2007-04-23 16:51:37 -04:00
|
|
|
.ioctl = video_ioctl2,
|
2008-04-22 13:46:11 -04:00
|
|
|
#ifdef CONFIG_COMPAT
|
2006-01-09 12:24:57 -05:00
|
|
|
.compat_ioctl = v4l_compat_ioctl32,
|
2008-04-22 13:46:11 -04:00
|
|
|
#endif
|
2005-04-16 18:20:36 -04:00
|
|
|
.llseek = no_llseek,
|
|
|
|
};
|
|
|
|
|
2008-07-21 01:57:38 -04:00
|
|
|
static const struct v4l2_ioctl_ops fmr2_ioctl_ops = {
|
2007-04-23 16:51:37 -04:00
|
|
|
.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,
|
2005-04-16 18:20:36 -04:00
|
|
|
};
|
|
|
|
|
2008-07-21 01:57:38 -04:00
|
|
|
static struct video_device fmr2_radio = {
|
|
|
|
.name = "SF16FMR2 radio",
|
|
|
|
.fops = &fmr2_fops,
|
|
|
|
.ioctl_ops = &fmr2_ioctl_ops,
|
2008-08-23 05:23:55 -04:00
|
|
|
.release = video_device_release_empty,
|
2008-07-21 01:57:38 -04:00
|
|
|
};
|
|
|
|
|
2005-04-16 18:20:36 -04:00
|
|
|
static int __init fmr2_init(void)
|
|
|
|
{
|
|
|
|
fmr2_unit.port = io;
|
|
|
|
fmr2_unit.curvol = 0;
|
|
|
|
fmr2_unit.mute = 0;
|
|
|
|
fmr2_unit.curfreq = 0;
|
|
|
|
fmr2_unit.stereo = 1;
|
2006-08-08 08:10:02 -04:00
|
|
|
fmr2_unit.flags = V4L2_TUNER_CAP_LOW;
|
2005-04-16 18:20:36 -04:00
|
|
|
fmr2_unit.card_type = 0;
|
2008-08-23 06:24:07 -04:00
|
|
|
video_set_drvdata(&fmr2_radio, &fmr2_unit);
|
2005-04-16 18:20:36 -04:00
|
|
|
|
2006-02-07 03:49:14 -05:00
|
|
|
mutex_init(&lock);
|
2005-04-16 18:20:36 -04:00
|
|
|
|
2008-01-27 12:29:51 -05:00
|
|
|
if (!request_region(io, 2, "sf16fmr2")) {
|
|
|
|
printk(KERN_ERR "radio-sf16fmr2: request_region failed!\n");
|
2005-04-16 18:20:36 -04:00
|
|
|
return -EBUSY;
|
|
|
|
}
|
|
|
|
|
2008-01-07 03:24:51 -05:00
|
|
|
if (video_register_device(&fmr2_radio, VFL_TYPE_RADIO, radio_nr) < 0) {
|
2005-04-16 18:20:36 -04:00
|
|
|
release_region(io, 2);
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
|
|
|
|
printk(KERN_INFO "SF16FMR2 radio card driver at 0x%x.\n", io);
|
|
|
|
/* mute card - prevents noisy bootups */
|
2006-02-07 03:49:14 -05:00
|
|
|
mutex_lock(&lock);
|
2005-04-16 18:20:36 -04:00
|
|
|
fmr2_mute(io);
|
|
|
|
fmr2_product_info(&fmr2_unit);
|
2006-02-07 03:49:14 -05:00
|
|
|
mutex_unlock(&lock);
|
2005-04-16 18:20:36 -04:00
|
|
|
debug_print((KERN_DEBUG "card_type %d\n", fmr2_unit.card_type));
|
2008-04-22 13:46:03 -04:00
|
|
|
|
|
|
|
/* Only card_type == 11 implements volume */
|
|
|
|
if (fmr2_unit.card_type != 11)
|
|
|
|
radio_qctrl[AUD_VOL_INDEX].maximum = 1;
|
|
|
|
|
2005-04-16 18:20:36 -04:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
MODULE_AUTHOR("Ziglio Frediano, freddy77@angelfire.com");
|
|
|
|
MODULE_DESCRIPTION("A driver for the SF16FMR2 radio.");
|
|
|
|
MODULE_LICENSE("GPL");
|
|
|
|
|
|
|
|
module_param(io, int, 0);
|
|
|
|
MODULE_PARM_DESC(io, "I/O address of the SF16FMR2 card (should be 0x384, if do not work try 0x284)");
|
|
|
|
module_param(radio_nr, int, 0);
|
|
|
|
|
|
|
|
static void __exit fmr2_cleanup_module(void)
|
|
|
|
{
|
|
|
|
video_unregister_device(&fmr2_radio);
|
|
|
|
release_region(io,2);
|
|
|
|
}
|
|
|
|
|
|
|
|
module_init(fmr2_init);
|
|
|
|
module_exit(fmr2_cleanup_module);
|
|
|
|
|
|
|
|
#ifndef MODULE
|
|
|
|
|
|
|
|
static int __init fmr2_setup_io(char *str)
|
|
|
|
{
|
|
|
|
get_option(&str, &io);
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
__setup("sf16fmr2=", fmr2_setup_io);
|
|
|
|
|
|
|
|
#endif
|