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!
diff --git a/drivers/media/radio/radio-trust.c b/drivers/media/radio/radio-trust.c
new file mode 100644
index 0000000..b300bed
--- /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);