Linux-2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 320 insertions, 0 deletions

diff --git a/drivers/media/radio/radio-trust.c b/drivers/media/radio/radio-trust.c
new file mode 100644
index 00000000000..b300bedf7c7
--- /dev/null
+++ b/drivers/media/radio/radio-trust.c
@@ -0,0 +1,320 @@
+/* radio-trust.c - Trust FM Radio card driver for Linux 2.2 
+ * by Eric Lammerts <eric@scintilla.utwente.nl>
+ *
+ * Based on radio-aztech.c. Original notes:
+ *
+ * Adapted to support the Video for Linux API by 
+ * Russell Kroll <rkroll@exploits.org>.  Based on original tuner code by:
+ *
+ * Quay Ly
+ * Donald Song
+ * Jason Lewis      (jlewis@twilight.vtc.vsc.edu) 
+ * Scott McGrath    (smcgrath@twilight.vtc.vsc.edu)
+ * William McGrath  (wmcgrath@twilight.vtc.vsc.edu)
+ *
+ * The basis for this code may be found at http://bigbang.vtc.vsc.edu/fmradio/
+ */
+
+#include <stdarg.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/ioport.h>
+#include <asm/io.h>
+#include <asm/uaccess.h>
+#include <linux/videodev.h>
+#include <linux/config.h>       /* CONFIG_RADIO_TRUST_PORT      */
+
+/* acceptable ports: 0x350 (JP3 shorted), 0x358 (JP3 open) */
+
+#ifndef CONFIG_RADIO_TRUST_PORT
+#define CONFIG_RADIO_TRUST_PORT -1
+#endif
+
+static int io = CONFIG_RADIO_TRUST_PORT; 
+static int radio_nr = -1;
+static int ioval = 0xf;
+static __u16 curvol;
+static __u16 curbass;
+static __u16 curtreble;
+static unsigned long curfreq;
+static int curstereo;
+static int curmute;
+
+/* i2c addresses */
+#define TDA7318_ADDR 0x88
+#define TSA6060T_ADDR 0xc4
+
+#define TR_DELAY do { inb(io); inb(io); inb(io); } while(0)
+#define TR_SET_SCL outb(ioval |= 2, io)
+#define TR_CLR_SCL outb(ioval &= 0xfd, io)
+#define TR_SET_SDA outb(ioval |= 1, io)
+#define TR_CLR_SDA outb(ioval &= 0xfe, io)
+
+static void write_i2c(int n, ...)
+{
+        unsigned char val, mask;
+        va_list args;
+
+        va_start(args, n);
+
+        /* start condition */
+        TR_SET_SDA;
+        TR_SET_SCL;
+        TR_DELAY;
+        TR_CLR_SDA;
+        TR_CLR_SCL;
+        TR_DELAY;
+
+        for(; n; n--) {
+                val = va_arg(args, unsigned);
+                for(mask = 0x80; mask; mask >>= 1) {
+                        if(val & mask)
+                                TR_SET_SDA;
+                        else
+                                TR_CLR_SDA;
+                        TR_SET_SCL;
+                        TR_DELAY;
+                        TR_CLR_SCL;
+                        TR_DELAY;
+                }
+                /* acknowledge bit */
+                TR_SET_SDA;
+                TR_SET_SCL;
+                TR_DELAY;
+                TR_CLR_SCL;
+                TR_DELAY;
+        }
+
+        /* stop condition */
+        TR_CLR_SDA;
+        TR_DELAY;
+        TR_SET_SCL;
+        TR_DELAY;
+        TR_SET_SDA;
+        TR_DELAY;
+
+        va_end(args);
+}
+
+static void tr_setvol(__u16 vol)
+{
+        curvol = vol / 2048;
+        write_i2c(2, TDA7318_ADDR, curvol ^ 0x1f);
+}
+
+static int basstreble2chip[15] = {
+        0, 1, 2, 3, 4, 5, 6, 7, 14, 13, 12, 11, 10, 9, 8
+};
+
+static void tr_setbass(__u16 bass)
+{
+        curbass = bass / 4370;
+        write_i2c(2, TDA7318_ADDR, 0x60 | basstreble2chip[curbass]);
+}
+
+static void tr_settreble(__u16 treble)
+{
+        curtreble = treble / 4370;
+        write_i2c(2, TDA7318_ADDR, 0x70 | basstreble2chip[curtreble]);
+}
+
+static void tr_setstereo(int stereo)
+{
+        curstereo = !!stereo;
+        ioval = (ioval & 0xfb) | (!curstereo << 2);
+        outb(ioval, io);
+}
+
+static void tr_setmute(int mute)
+{
+        curmute = !!mute;
+        ioval = (ioval & 0xf7) | (curmute << 3);
+        outb(ioval, io);
+}
+
+static int tr_getsigstr(void)
+{
+        int i, v;
+        
+        for(i = 0, v = 0; i < 100; i++) v |= inb(io);
+        return (v & 1)? 0 : 0xffff;
+}
+
+static int tr_getstereo(void)
+{
+        /* don't know how to determine it, just return the setting */
+        return curstereo;
+}
+
+static void tr_setfreq(unsigned long f)
+{
+        f /= 160;       /* Convert to 10 kHz units      */
+        f += 1070;      /* Add 10.7 MHz IF                      */
+
+        write_i2c(5, TSA6060T_ADDR, (f << 1) | 1, f >> 7, 0x60 | ((f >> 15) & 1), 0);
+}
+
+static int tr_do_ioctl(struct inode *inode, struct file *file,
+                       unsigned int cmd, void *arg)
+{
+        switch(cmd)
+        {
+                case VIDIOCGCAP:
+                {
+                        struct video_capability *v = arg;
+
+                        memset(v,0,sizeof(*v));
+                        v->type=VID_TYPE_TUNER;
+                        v->channels=1;
+                        v->audios=1;
+                        strcpy(v->name, "Trust FM Radio");
+
+                        return 0;
+                }
+                case VIDIOCGTUNER:
+                {
+                        struct video_tuner *v = arg;
+
+                        if(v->tuner)    /* Only 1 tuner */ 
+                                return -EINVAL;
+
+                        v->rangelow = 87500 * 16;
+                        v->rangehigh = 108000 * 16;
+                        v->flags = VIDEO_TUNER_LOW;
+                        v->mode = VIDEO_MODE_AUTO;
+
+                        v->signal = tr_getsigstr();
+                        if(tr_getstereo())
+                                v->flags |= VIDEO_TUNER_STEREO_ON;
+
+                        strcpy(v->name, "FM");
+
+                        return 0;
+                }
+                case VIDIOCSTUNER:
+                {
+                        struct video_tuner *v = arg;
+                        if(v->tuner != 0)
+                                return -EINVAL;
+                        return 0;
+                }
+                case VIDIOCGFREQ:
+                {
+                        unsigned long *freq = arg;
+                        *freq = curfreq;
+                        return 0;
+                }
+                case VIDIOCSFREQ:
+                {
+                        unsigned long *freq = arg;
+                        tr_setfreq(*freq);
+                        return 0;
+                }
+                case VIDIOCGAUDIO:
+                {       
+                        struct video_audio *v = arg;
+
+                        memset(v,0, sizeof(*v));
+                        v->flags = VIDEO_AUDIO_MUTABLE | VIDEO_AUDIO_VOLUME |
+                                  VIDEO_AUDIO_BASS | VIDEO_AUDIO_TREBLE;
+                        v->mode = curstereo? VIDEO_SOUND_STEREO : VIDEO_SOUND_MONO;
+                        v->volume = curvol * 2048;
+                        v->step = 2048;
+                        v->bass = curbass * 4370;
+                        v->treble = curtreble * 4370;
+                        
+                        strcpy(v->name, "Trust FM Radio");
+                        return 0;                       
+                }
+                case VIDIOCSAUDIO:
+                {
+                        struct video_audio *v = arg;
+
+                        if(v->audio) 
+                                return -EINVAL;
+                        tr_setvol(v->volume);                                   
+                        tr_setbass(v->bass);
+                        tr_settreble(v->treble);
+                        tr_setstereo(v->mode & VIDEO_SOUND_STEREO);
+                        tr_setmute(v->flags & VIDEO_AUDIO_MUTE);
+                        return 0;
+                }
+                default:
+                        return -ENOIOCTLCMD;
+        }
+}
+
+static int tr_ioctl(struct inode *inode, struct file *file,
+                    unsigned int cmd, unsigned long arg)
+{
+        return video_usercopy(inode, file, cmd, arg, tr_do_ioctl);
+}
+
+static struct file_operations trust_fops = {
+        .owner          = THIS_MODULE,
+        .open           = video_exclusive_open,
+        .release        = video_exclusive_release,
+        .ioctl          = tr_ioctl,
+        .llseek         = no_llseek,
+};
+
+static struct video_device trust_radio=
+{
+        .owner          = THIS_MODULE,
+        .name           = "Trust FM Radio",
+        .type           = VID_TYPE_TUNER,
+        .hardware       = VID_HARDWARE_TRUST,
+        .fops           = &trust_fops,
+};
+
+static int __init trust_init(void)
+{
+        if(io == -1) {
+                printk(KERN_ERR "You must set an I/O address with io=0x???\n");
+                return -EINVAL;
+        }
+        if(!request_region(io, 2, "Trust FM Radio")) {
+                printk(KERN_ERR "trust: port 0x%x already in use\n", io);
+                return -EBUSY;
+        }
+        if(video_register_device(&trust_radio, VFL_TYPE_RADIO, radio_nr)==-1)
+        {
+                release_region(io, 2);
+                return -EINVAL;
+        }
+
+        printk(KERN_INFO "Trust FM Radio card driver v1.0.\n");
+
+        write_i2c(2, TDA7318_ADDR, 0x80);       /* speaker att. LF = 0 dB */
+        write_i2c(2, TDA7318_ADDR, 0xa0);       /* speaker att. RF = 0 dB */
+        write_i2c(2, TDA7318_ADDR, 0xc0);       /* speaker att. LR = 0 dB */
+        write_i2c(2, TDA7318_ADDR, 0xe0);       /* speaker att. RR = 0 dB */
+        write_i2c(2, TDA7318_ADDR, 0x40);       /* stereo 1 input, gain = 18.75 dB */
+
+        tr_setvol(0x8000);                                      
+        tr_setbass(0x8000);
+        tr_settreble(0x8000);
+        tr_setstereo(1);
+
+        /* mute card - prevents noisy bootups */
+        tr_setmute(1);
+
+        return 0;
+}
+
+MODULE_AUTHOR("Eric Lammerts, Russell Kroll, Quay Lu, Donald Song, Jason Lewis, Scott McGrath, William McGrath");
+MODULE_DESCRIPTION("A driver for the Trust FM Radio card.");
+MODULE_LICENSE("GPL");
+
+module_param(io, int, 0);
+MODULE_PARM_DESC(io, "I/O address of the Trust FM Radio card (0x350 or 0x358)");
+module_param(radio_nr, int, 0);
+
+static void __exit cleanup_trust_module(void)
+{
+        video_unregister_device(&trust_radio);
+        release_region(io, 2);
+}
+
+module_init(trust_init);
+module_exit(cleanup_trust_module);