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-rw-r--r--drivers/media/radio/radio-trust.c433
1 files changed, 433 insertions, 0 deletions
diff --git a/drivers/media/radio/radio-trust.c b/drivers/media/radio/radio-trust.c
new file mode 100644
index 0000000..e7b111f
--- /dev/null
+++ b/drivers/media/radio/radio-trust.c
@@ -0,0 +1,433 @@
+/* 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)
+ *
+ * Converted to V4L2 API by Mauro Carvalho Chehab <mchehab@infradead.org>
+ */
+
+#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/videodev2.h>
+#include <media/v4l2-common.h>
+#include <media/v4l2-ioctl.h>
+
+#include <linux/version.h> /* for KERNEL_VERSION MACRO */
+#define RADIO_VERSION KERNEL_VERSION(0,0,2)
+
+static struct v4l2_queryctrl radio_qctrl[] = {
+ {
+ .id = V4L2_CID_AUDIO_MUTE,
+ .name = "Mute",
+ .minimum = 0,
+ .maximum = 1,
+ .default_value = 1,
+ .type = V4L2_CTRL_TYPE_BOOLEAN,
+ },{
+ .id = V4L2_CID_AUDIO_VOLUME,
+ .name = "Volume",
+ .minimum = 0,
+ .maximum = 65535,
+ .step = 2048,
+ .default_value = 65535,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ },{
+ .id = V4L2_CID_AUDIO_BASS,
+ .name = "Bass",
+ .minimum = 0,
+ .maximum = 65535,
+ .step = 4370,
+ .default_value = 32768,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ },{
+ .id = V4L2_CID_AUDIO_TREBLE,
+ .name = "Treble",
+ .minimum = 0,
+ .maximum = 65535,
+ .step = 4370,
+ .default_value = 32768,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ },
+};
+
+/* 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;
+static unsigned long in_use;
+
+/* 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 vidioc_querycap(struct file *file, void *priv,
+ struct v4l2_capability *v)
+{
+ strlcpy(v->driver, "radio-trust", sizeof(v->driver));
+ strlcpy(v->card, "Trust FM Radio", sizeof(v->card));
+ sprintf(v->bus_info, "ISA");
+ v->version = RADIO_VERSION;
+ v->capabilities = V4L2_CAP_TUNER;
+ return 0;
+}
+
+static int vidioc_g_tuner(struct file *file, void *priv,
+ struct v4l2_tuner *v)
+{
+ if (v->index > 0)
+ return -EINVAL;
+
+ strcpy(v->name, "FM");
+ v->type = V4L2_TUNER_RADIO;
+ v->rangelow = (87.5*16000);
+ v->rangehigh = (108*16000);
+ v->rxsubchans = V4L2_TUNER_SUB_MONO|V4L2_TUNER_SUB_STEREO;
+ v->capability = V4L2_TUNER_CAP_LOW;
+ if (tr_getstereo())
+ v->audmode = V4L2_TUNER_MODE_STEREO;
+ else
+ v->audmode = V4L2_TUNER_MODE_MONO;
+ v->signal = tr_getsigstr();
+ return 0;
+}
+
+static int vidioc_s_tuner(struct file *file, void *priv,
+ struct v4l2_tuner *v)
+{
+ if (v->index > 0)
+ return -EINVAL;
+
+ return 0;
+}
+
+static int vidioc_s_frequency(struct file *file, void *priv,
+ struct v4l2_frequency *f)
+{
+ curfreq = f->frequency;
+ tr_setfreq(curfreq);
+ return 0;
+}
+
+static int vidioc_g_frequency(struct file *file, void *priv,
+ struct v4l2_frequency *f)
+{
+ f->type = V4L2_TUNER_RADIO;
+ f->frequency = curfreq;
+ return 0;
+}
+
+static int vidioc_queryctrl(struct file *file, void *priv,
+ struct v4l2_queryctrl *qc)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(radio_qctrl); i++) {
+ if (qc->id && qc->id == radio_qctrl[i].id) {
+ memcpy(qc, &(radio_qctrl[i]),
+ sizeof(*qc));
+ return 0;
+ }
+ }
+ return -EINVAL;
+}
+
+static int vidioc_g_ctrl(struct file *file, void *priv,
+ struct v4l2_control *ctrl)
+{
+ switch (ctrl->id) {
+ case V4L2_CID_AUDIO_MUTE:
+ ctrl->value = curmute;
+ return 0;
+ case V4L2_CID_AUDIO_VOLUME:
+ ctrl->value = curvol * 2048;
+ return 0;
+ case V4L2_CID_AUDIO_BASS:
+ ctrl->value = curbass * 4370;
+ return 0;
+ case V4L2_CID_AUDIO_TREBLE:
+ ctrl->value = curtreble * 4370;
+ return 0;
+ }
+ return -EINVAL;
+}
+
+static int vidioc_s_ctrl(struct file *file, void *priv,
+ struct v4l2_control *ctrl)
+{
+ switch (ctrl->id) {
+ case V4L2_CID_AUDIO_MUTE:
+ tr_setmute(ctrl->value);
+ return 0;
+ case V4L2_CID_AUDIO_VOLUME:
+ tr_setvol(ctrl->value);
+ return 0;
+ case V4L2_CID_AUDIO_BASS:
+ tr_setbass(ctrl->value);
+ return 0;
+ case V4L2_CID_AUDIO_TREBLE:
+ tr_settreble(ctrl->value);
+ return 0;
+ }
+ return -EINVAL;
+}
+
+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;
+}
+
+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;
+}
+
+static int trust_exclusive_open(struct inode *inode, struct file *file)
+{
+ return test_and_set_bit(0, &in_use) ? -EBUSY : 0;
+}
+
+static int trust_exclusive_release(struct inode *inode, struct file *file)
+{
+ clear_bit(0, &in_use);
+ return 0;
+}
+
+static const struct file_operations trust_fops = {
+ .owner = THIS_MODULE,
+ .open = trust_exclusive_open,
+ .release = trust_exclusive_release,
+ .ioctl = video_ioctl2,
+#ifdef CONFIG_COMPAT
+ .compat_ioctl = v4l_compat_ioctl32,
+#endif
+ .llseek = no_llseek,
+};
+
+static const struct v4l2_ioctl_ops trust_ioctl_ops = {
+ .vidioc_querycap = vidioc_querycap,
+ .vidioc_g_tuner = vidioc_g_tuner,
+ .vidioc_s_tuner = vidioc_s_tuner,
+ .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,
+ .vidioc_g_audio = vidioc_g_audio,
+ .vidioc_s_audio = vidioc_s_audio,
+ .vidioc_g_input = vidioc_g_input,
+ .vidioc_s_input = vidioc_s_input,
+};
+
+static struct video_device trust_radio = {
+ .name = "Trust FM Radio",
+ .fops = &trust_fops,
+ .ioctl_ops = &trust_ioctl_ops,
+ .release = video_device_release_empty,
+};
+
+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) < 0) {
+ 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);
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