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-maxiradio.c b/drivers/media/radio/radio-maxiradio.c
new file mode 100644
index 0000000..5b748a4
--- /dev/null
+++ b/drivers/media/radio/radio-maxiradio.c
@@ -0,0 +1,349 @@
+/*
+ * Guillemot Maxi Radio FM 2000 PCI radio card driver for Linux
+ * (C) 2001 Dimitromanolakis Apostolos <apdim@grecian.net>
+ *
+ * Based in the radio Maestro PCI driver. Actually it uses the same chip
+ * for radio but different pci controller.
+ *
+ * I didn't have any specs I reversed engineered the protocol from
+ * the windows driver (radio.dll).
+ *
+ * The card uses the TEA5757 chip that includes a search function but it
+ * is useless as I haven't found any way to read back the frequency. If
+ * anybody does please mail me.
+ *
+ * For the pdf file see:
+ * http://www.semiconductors.philips.com/pip/TEA5757H/V1
+ *
+ *
+ * CHANGES:
+ * 0.75b
+ * - better pci interface thanks to Francois Romieu <romieu@cogenit.fr>
+ *
+ * 0.75
+ * - tiding up
+ * - removed support for multiple devices as it didn't work anyway
+ *
+ * BUGS:
+ * - card unmutes if you change frequency
+ *
+ */
+
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/ioport.h>
+#include <linux/delay.h>
+#include <linux/sched.h>
+#include <asm/io.h>
+#include <asm/uaccess.h>
+#include <asm/semaphore.h>
+#include <linux/pci.h>
+#include <linux/videodev.h>
+
+/* version 0.75 Sun Feb 4 22:51:27 EET 2001 */
+#define DRIVER_VERSION "0.75"
+
+#ifndef PCI_VENDOR_ID_GUILLEMOT
+#define PCI_VENDOR_ID_GUILLEMOT 0x5046
+#endif
+
+#ifndef PCI_DEVICE_ID_GUILLEMOT
+#define PCI_DEVICE_ID_GUILLEMOT_MAXIRADIO 0x1001
+#endif
+
+
+/* TEA5757 pin mappings */
+static const int clk = 1, data = 2, wren = 4, mo_st = 8, power = 16 ;
+
+static int radio_nr = -1;
+module_param(radio_nr, int, 0);
+
+
+#define FREQ_LO 50*16000
+#define FREQ_HI 150*16000
+
+#define FREQ_IF 171200 /* 10.7*16000 */
+#define FREQ_STEP 200 /* 12.5*16 */
+
+#define FREQ2BITS(x) ((( (unsigned int)(x)+FREQ_IF+(FREQ_STEP<<1))\
+ /(FREQ_STEP<<2))<<2) /* (x==fmhz*16*1000) -> bits */
+
+#define BITS2FREQ(x) ((x) * FREQ_STEP - FREQ_IF)
+
+
+static int radio_ioctl(struct inode *inode, struct file *file,
+ unsigned int cmd, unsigned long arg);
+
+static struct file_operations maxiradio_fops = {
+ .owner = THIS_MODULE,
+ .open = video_exclusive_open,
+ .release = video_exclusive_release,
+ .ioctl = radio_ioctl,
+ .llseek = no_llseek,
+};
+static struct video_device maxiradio_radio =
+{
+ .owner = THIS_MODULE,
+ .name = "Maxi Radio FM2000 radio",
+ .type = VID_TYPE_TUNER,
+ .hardware = VID_HARDWARE_SF16MI,
+ .fops = &maxiradio_fops,
+};
+
+static struct radio_device
+{
+ __u16 io, /* base of radio io */
+ muted, /* VIDEO_AUDIO_MUTE */
+ stereo, /* VIDEO_TUNER_STEREO_ON */
+ tuned; /* signal strength (0 or 0xffff) */
+
+ unsigned long freq;
+
+ struct semaphore lock;
+} radio_unit = {0, 0, 0, 0, };
+
+
+static void outbit(unsigned long bit, __u16 io)
+{
+ if(bit != 0)
+ {
+ outb( power|wren|data ,io); udelay(4);
+ outb( power|wren|data|clk ,io); udelay(4);
+ outb( power|wren|data ,io); udelay(4);
+ }
+ else
+ {
+ outb( power|wren ,io); udelay(4);
+ outb( power|wren|clk ,io); udelay(4);
+ outb( power|wren ,io); udelay(4);
+ }
+}
+
+static void turn_power(__u16 io, int p)
+{
+ if(p != 0) outb(power, io); else outb(0,io);
+}
+
+
+static void set_freq(__u16 io, __u32 data)
+{
+ unsigned long int si;
+ int bl;
+
+ /* TEA5757 shift register bits (see pdf) */
+
+ outbit(0,io); // 24 search
+ outbit(1,io); // 23 search up/down
+
+ outbit(0,io); // 22 stereo/mono
+
+ outbit(0,io); // 21 band
+ outbit(0,io); // 20 band (only 00=FM works I think)
+
+ outbit(0,io); // 19 port ?
+ outbit(0,io); // 18 port ?
+
+ outbit(0,io); // 17 search level
+ outbit(0,io); // 16 search level
+
+ si = 0x8000;
+ for(bl = 1; bl <= 16 ; bl++) { outbit(data & si,io); si >>=1; }
+
+ outb(power,io);
+}
+
+static int get_stereo(__u16 io)
+{
+ outb(power,io); udelay(4);
+ return !(inb(io) & mo_st);
+}
+
+static int get_tune(__u16 io)
+{
+ outb(power+clk,io); udelay(4);
+ return !(inb(io) & mo_st);
+}
+
+
+inline static int radio_function(struct inode *inode, struct file *file,
+ unsigned int cmd, void *arg)
+{
+ struct video_device *dev = video_devdata(file);
+ struct radio_device *card=dev->priv;
+
+ switch(cmd) {
+ case VIDIOCGCAP: {
+ struct video_capability *v = arg;
+
+ memset(v,0,sizeof(*v));
+ strcpy(v->name, "Maxi Radio FM2000 radio");
+ v->type=VID_TYPE_TUNER;
+ v->channels=v->audios=1;
+ return 0;
+ }
+ case VIDIOCGTUNER: {
+ struct video_tuner *v = arg;
+
+ if(v->tuner)
+ return -EINVAL;
+
+ card->stereo = 0xffff * get_stereo(card->io);
+ card->tuned = 0xffff * get_tune(card->io);
+
+ v->flags = VIDEO_TUNER_LOW | card->stereo;
+ v->signal = card->tuned;
+
+ strcpy(v->name, "FM");
+
+ v->rangelow = FREQ_LO;
+ v->rangehigh = FREQ_HI;
+ v->mode = VIDEO_MODE_AUTO;
+
+ return 0;
+ }
+ case VIDIOCSTUNER: {
+ struct video_tuner *v = arg;
+ if(v->tuner!=0)
+ return -EINVAL;
+ return 0;
+ }
+ case VIDIOCGFREQ: {
+ unsigned long *freq = arg;
+
+ *freq = card->freq;
+ return 0;
+ }
+ case VIDIOCSFREQ: {
+ unsigned long *freq = arg;
+
+ if (*freq < FREQ_LO || *freq > FREQ_HI)
+ return -EINVAL;
+ card->freq = *freq;
+ set_freq(card->io, FREQ2BITS(card->freq));
+ msleep(125);
+ return 0;
+ }
+ case VIDIOCGAUDIO: {
+ struct video_audio *v = arg;
+ memset(v,0,sizeof(*v));
+ strcpy(v->name, "Radio");
+ v->flags=VIDEO_AUDIO_MUTABLE | card->muted;
+ v->mode=VIDEO_SOUND_STEREO;
+ return 0;
+ }
+
+ case VIDIOCSAUDIO: {
+ struct video_audio *v = arg;
+
+ if(v->audio)
+ return -EINVAL;
+ card->muted = v->flags & VIDEO_AUDIO_MUTE;
+ if(card->muted)
+ turn_power(card->io, 0);
+ else
+ set_freq(card->io, FREQ2BITS(card->freq));
+ return 0;
+ }
+ case VIDIOCGUNIT: {
+ struct video_unit *v = arg;
+
+ v->video=VIDEO_NO_UNIT;
+ v->vbi=VIDEO_NO_UNIT;
+ v->radio=dev->minor;
+ v->audio=0;
+ v->teletext=VIDEO_NO_UNIT;
+ return 0;
+ }
+ default: return -ENOIOCTLCMD;
+ }
+}
+
+static int radio_ioctl(struct inode *inode, struct file *file,
+ unsigned int cmd, unsigned long arg)
+{
+ struct video_device *dev = video_devdata(file);
+ struct radio_device *card=dev->priv;
+ int ret;
+
+ down(&card->lock);
+ ret = video_usercopy(inode, file, cmd, arg, radio_function);
+ up(&card->lock);
+ return ret;
+}
+
+MODULE_AUTHOR("Dimitromanolakis Apostolos, apdim@grecian.net");
+MODULE_DESCRIPTION("Radio driver for the Guillemot Maxi Radio FM2000 radio.");
+MODULE_LICENSE("GPL");
+
+
+static int __devinit maxiradio_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
+{
+ if(!request_region(pci_resource_start(pdev, 0),
+ pci_resource_len(pdev, 0), "Maxi Radio FM 2000")) {
+ printk(KERN_ERR "radio-maxiradio: can't reserve I/O ports\n");
+ goto err_out;
+ }
+
+ if (pci_enable_device(pdev))
+ goto err_out_free_region;
+
+ radio_unit.io = pci_resource_start(pdev, 0);
+ init_MUTEX(&radio_unit.lock);
+ maxiradio_radio.priv = &radio_unit;
+
+ if(video_register_device(&maxiradio_radio, VFL_TYPE_RADIO, radio_nr)==-1) {
+ printk("radio-maxiradio: can't register device!");
+ goto err_out_free_region;
+ }
+
+ printk(KERN_INFO "radio-maxiradio: version "
+ DRIVER_VERSION
+ " time "
+ __TIME__ " "
+ __DATE__
+ "\n");
+
+ printk(KERN_INFO "radio-maxiradio: found Guillemot MAXI Radio device (io = 0x%x)\n",
+ radio_unit.io);
+ return 0;
+
+err_out_free_region:
+ release_region(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0));
+err_out:
+ return -ENODEV;
+}
+
+static void __devexit maxiradio_remove_one(struct pci_dev *pdev)
+{
+ video_unregister_device(&maxiradio_radio);
+ release_region(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0));
+}
+
+static struct pci_device_id maxiradio_pci_tbl[] = {
+ { PCI_VENDOR_ID_GUILLEMOT, PCI_DEVICE_ID_GUILLEMOT_MAXIRADIO,
+ PCI_ANY_ID, PCI_ANY_ID, },
+ { 0,}
+};
+
+MODULE_DEVICE_TABLE(pci, maxiradio_pci_tbl);
+
+static struct pci_driver maxiradio_driver = {
+ .name = "radio-maxiradio",
+ .id_table = maxiradio_pci_tbl,
+ .probe = maxiradio_init_one,
+ .remove = __devexit_p(maxiradio_remove_one),
+};
+
+static int __init maxiradio_radio_init(void)
+{
+ return pci_module_init(&maxiradio_driver);
+}
+
+static void __exit maxiradio_radio_exit(void)
+{
+ pci_unregister_driver(&maxiradio_driver);
+}
+
+module_init(maxiradio_radio_init);
+module_exit(maxiradio_radio_exit);
