Gitweb:     
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=4753647e6422341a091e729b9d81a9a5e7fe6179
Commit:     4753647e6422341a091e729b9d81a9a5e7fe6179
Parent:     3e7589c50771aa0f6eaa8de799e599c016f4029c
Author:     Pekka Seppanen <[EMAIL PROTECTED]>
AuthorDate: Mon Oct 1 00:27:55 2007 -0300
Committer:  Mauro Carvalho Chehab <[EMAIL PROTECTED]>
CommitDate: Tue Oct 9 22:14:50 2007 -0300

    V4L/DVB (6244): [PATCH 1/2] GemTek Radio card
    
    Code cleanup for GemTek Radio card driver. Removed unnecessary / invalid
    I/O commands and rewrote code for tuning on-board BU2614FS chip. Adds
    several new module params for power users. Includes automatic device
    probing.
    
    Signed-off-by: Pekka Seppanen <[EMAIL PROTECTED]>
    Signed-off-by: Douglas Schilling Landgraf <[EMAIL PROTECTED]>
    Reviewed-by: Trent Piepho <[EMAIL PROTECTED]>
    Signed-off-by: Mauro Carvalho Chehab <[EMAIL PROTECTED]>
---
 drivers/media/radio/radio-gemtek.c |  651 +++++++++++++++++++++++++-----------
 1 files changed, 462 insertions(+), 189 deletions(-)

diff --git a/drivers/media/radio/radio-gemtek.c 
b/drivers/media/radio/radio-gemtek.c
index eab8c80..f959bb7 100644
--- a/drivers/media/radio/radio-gemtek.c
+++ b/drivers/media/radio/radio-gemtek.c
@@ -26,143 +26,413 @@
 #include <media/v4l2-common.h>
 #include <linux/spinlock.h>
 
-#include <linux/version.h>      /* for KERNEL_VERSION MACRO     */
-#define RADIO_VERSION KERNEL_VERSION(0,0,2)
+#include <linux/version.h>     /* for KERNEL_VERSION MACRO     */
+#define RADIO_VERSION KERNEL_VERSION(0,0,3)
+#define RADIO_BANNER "GemTek Radio card driver: v0.0.3"
 
-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          = 65535,
-               .default_value = 0xff,
-               .type          = V4L2_CTRL_TYPE_INTEGER,
-       }
-};
+/*
+ * Module info.
+ */
+
+MODULE_AUTHOR("Jonas Munsin, Pekka Sepp´┐Żnen <[EMAIL PROTECTED]>");
+MODULE_DESCRIPTION("A driver for the GemTek Radio card.");
+MODULE_LICENSE("GPL");
+
+/*
+ * Module params.
+ */
 
 #ifndef CONFIG_RADIO_GEMTEK_PORT
 #define CONFIG_RADIO_GEMTEK_PORT -1
 #endif
+#ifndef CONFIG_RADIO_GEMTEK_PROBE
+#define CONFIG_RADIO_GEMTEK_PROBE 1
+#endif
 
-static int io = CONFIG_RADIO_GEMTEK_PORT;
-static int radio_nr = -1;
-static spinlock_t lock;
+static int io          = CONFIG_RADIO_GEMTEK_PORT;
+static int probe       = CONFIG_RADIO_GEMTEK_PROBE;
+static int hardmute;
+static int shutdown    = 1;
+static int keepmuted   = 1;
+static int initmute    = 1;
+static int radio_nr    = -1;
 
-struct gemtek_device
-{
-       int port;
-       unsigned long curfreq;
+module_param(io, int, 0444);
+MODULE_PARM_DESC(io, "Force I/O port for the GemTek Radio card if automatic"
+        "probing is disabled or fails. The most common I/O ports are: 0x20c "
+        "0x30c, 0x24c or 0x34c (0x20c, 0x248 and 0x28c have been reported to "
+        " work for the combined sound/radiocard).");
+
+module_param(probe, bool, 0444);
+MODULE_PARM_DESC(probe, "Enable automatic device probing. Note: only the most "
+       "common I/O ports used by the card are probed.");
+
+module_param(hardmute, bool, 0644);
+MODULE_PARM_DESC(hardmute, "Enable `hard muting' by shutting down PLL, may "
+        "reduce static noise.");
+
+module_param(shutdown, bool, 0644);
+MODULE_PARM_DESC(shutdown, "Enable shutting down PLL and muting line when "
+        "module is unloaded.");
+
+module_param(keepmuted, bool, 0644);
+MODULE_PARM_DESC(keepmuted, "Keep card muted even when frequency is changed.");
+
+module_param(initmute, bool, 0444);
+MODULE_PARM_DESC(initmute, "Mute card when module is loaded.");
+
+module_param(radio_nr, int, 0444);
+
+/*
+ * Functions for controlling the card.
+ */
+#define GEMTEK_LOWFREQ (87*16000)
+#define GEMTEK_HIGHFREQ        (108*16000)
+
+#define GEMTEK_CK              0x01    /* Clock signal                 */
+#define GEMTEK_DA              0x02    /* Serial data                  */
+#define GEMTEK_CE              0x04    /* Chip enable                  */
+#define GEMTEK_NS              0x08    /* No signal                    */
+#define GEMTEK_MT              0x10    /* Line mute                    */
+#define GEMTEK_STDF_3_125_KHZ  0x01    /* Standard frequency 3.125 kHz */
+#define GEMTEK_PLL_OFF         0x07    /* PLL off                      */
+
+#define BU2614_BUS_SIZE        32      /* BU2614 / BU2614FS bus size           
*/
+#define BU2614_NOPS    8       /* Number of supported operations       */
+
+#define SHORT_DELAY 5          /* usec */
+#define LONG_DELAY 75          /* usec */
+
+struct gemtek_device {
+       unsigned long lastfreq;
        int muted;
+       unsigned long bu2614data[BU2614_NOPS];
 };
 
+enum {
+       BU2614_VOID,
+       BU2614_FREQ,    /* D0..D15, Frequency data                      */
+       BU2614_PORT,    /* P0..P2, Output port control data             */
+       BU2614_FMES,    /* CT, Frequency measurement beginning data     */
+       BU2614_STDF,    /* R0..R2, Standard frequency data              */
+       BU2614_SWIN,    /* S, Switch between FMIN / AMIN                */
+       BU2614_SWAL,    /* PS, Swallow counter division (AMIN only)     */
+       BU2614_FMUN,    /* GT, Frequency measurement time and unlock    */
+       BU2614_TEST     /* TS, Test data is input                       */
+};
+
+struct bu2614_op {
+       int op;         /* Operation */
+       int size;       /* Data size */
+};
+
+static struct gemtek_device gemtek_unit;
+
+static struct bu2614_op bu2614ops[] = {
+       {.op = BU2614_FREQ,
+        .size = 0x10},
+       {.op = BU2614_PORT,
+        .size = 0x03},
+       {.op = BU2614_VOID,
+        .size = 0x04},
+       {.op = BU2614_FMES,
+        .size = 0x01},
+       {.op = BU2614_STDF,
+        .size = 0x03},
+       {.op = BU2614_SWIN,
+        .size = 0x01},
+       {.op = BU2614_SWAL,
+        .size = 0x01},
+       {.op = BU2614_VOID,
+        .size = 0x01},
+       {.op = BU2614_FMUN,
+        .size = 0x01},
+       {.op = BU2614_TEST,
+        .size = 0x01}
+};
 
-/* local things */
+static spinlock_t lock;
 
-/* the correct way to mute the gemtek may be to write the last written
- * frequency || 0x10, but just writing 0x10 once seems to do it as well
+/*
+ * Set data which will be sent to BU2614FS.
  */
-static void gemtek_mute(struct gemtek_device *dev)
+static void gemtek_bu2614_set(struct gemtek_device *dev, int op,
+                             unsigned long data)
 {
-       if(dev->muted)
-               return;
+       int i, q;
+
+       for (i = 0, q = 0; q < ARRAY_SIZE(dev->bu2614data); ++i) {
+               if (bu2614ops[i].op == op) {
+                       dev->bu2614data[q] =
+                           data & ((1 << bu2614ops[i].size) - 1);
+                       return;
+               }
+
+               if (bu2614ops[i].op != BU2614_VOID)
+                       ++q;
+       }
+}
+
+/*
+ * Transmit settings to BU2614FS over GemTek IC.
+ */
+static void gemtek_bu2614_transmit(struct gemtek_device *dev)
+{
+       int i, bit, q, mute;
+
        spin_lock(&lock);
-       outb(0x10, io);
+
+       mute = dev->muted ? GEMTEK_MT : 0x00;
+
+       outb_p(mute | GEMTEK_DA | GEMTEK_CK, io);
+       udelay(SHORT_DELAY);
+       outb_p(mute | GEMTEK_CE | GEMTEK_DA | GEMTEK_CK, io);
+       udelay(LONG_DELAY);
+
+       for (i = 0, q = 0; q < ARRAY_SIZE(dev->bu2614data); ++i) {
+               for (bit = 0; bit < bu2614ops[i].size; ++bit) {
+                       if (bu2614ops[i].op != BU2614_VOID &&
+                           dev->bu2614data[q] & (1 << bit)) {
+                               outb_p(mute | GEMTEK_CE | GEMTEK_DA, io);
+                               udelay(SHORT_DELAY);
+                               outb_p(mute | GEMTEK_CE | GEMTEK_DA |
+                                      GEMTEK_CK, io);
+                               udelay(SHORT_DELAY);
+                       } else {
+                               outb_p(mute | GEMTEK_CE, io);
+                               udelay(SHORT_DELAY);
+                               outb_p(mute | GEMTEK_CE | GEMTEK_CK, io);
+                               udelay(SHORT_DELAY);
+                       }
+               }
+
+               if (bu2614ops[i].op != BU2614_VOID)
+                       ++q;
+       }
+
+       outb_p(mute | GEMTEK_DA | GEMTEK_CK, io);
+       udelay(SHORT_DELAY);
+       outb_p(mute | GEMTEK_CE | GEMTEK_DA | GEMTEK_CK, io);
+       udelay(LONG_DELAY);
+
        spin_unlock(&lock);
-       dev->muted = 1;
 }
 
-static void gemtek_unmute(struct gemtek_device *dev)
+/*
+ * Convert FM-frequency for BU2614FS (3.125 KHz STDF expected).
+ */
+static inline void gemtek_convfreq(unsigned long *freq)
 {
-       if(dev->muted == 0)
+       (*freq) /= 160;
+       (*freq) += 1052;        /* FMIN, 10.52 MHz              */
+       (*freq) *= 1565;        /* STDF, 1 / 156.5 = 0.00639    */
+       (*freq) /= 1000;
+}
+
+/*
+ * Set FM-frequency.
+ */
+static void gemtek_setfreq(struct gemtek_device *dev, unsigned long freq)
+{
+
+       if (keepmuted && hardmute && dev->muted)
                return;
-       spin_lock(&lock);
-       outb(0x20, io);
-       spin_unlock(&lock);
+
+       if (freq < GEMTEK_LOWFREQ)
+               freq = GEMTEK_LOWFREQ;
+       else if (freq > GEMTEK_HIGHFREQ)
+               freq = GEMTEK_HIGHFREQ;
+
+       dev->lastfreq = freq;
        dev->muted = 0;
+
+       gemtek_bu2614_set(dev, BU2614_PORT, 0);
+       gemtek_bu2614_set(dev, BU2614_FMES, 0);
+       gemtek_bu2614_set(dev, BU2614_SWIN, 0); /* FM-mode      */
+       gemtek_bu2614_set(dev, BU2614_SWAL, 0);
+       gemtek_bu2614_set(dev, BU2614_FMUN, 1); /* GT bit set   */
+       gemtek_bu2614_set(dev, BU2614_TEST, 0);
+
+       gemtek_convfreq(&freq);
+
+       gemtek_bu2614_set(dev, BU2614_STDF, GEMTEK_STDF_3_125_KHZ);
+       gemtek_bu2614_set(dev, BU2614_FREQ, freq);
+
+       gemtek_bu2614_transmit(dev);
 }
 
-static void zero(void)
+/*
+ * Set mute flag.
+ */
+static void gemtek_mute(struct gemtek_device *dev)
 {
-       outb_p(0x04, io);
-       udelay(5);
-       outb_p(0x05, io);
-       udelay(5);
+       int i;
+       dev->muted = 1;
+
+       if (hardmute) {
+               /* Turn off PLL, disable data output */
+               gemtek_bu2614_set(dev, BU2614_PORT, 0);
+               gemtek_bu2614_set(dev, BU2614_FMES, 0); /* CT bit off   */
+               gemtek_bu2614_set(dev, BU2614_SWIN, 0); /* FM-mode      */
+               gemtek_bu2614_set(dev, BU2614_SWAL, 0);
+               gemtek_bu2614_set(dev, BU2614_FMUN, 0); /* GT bit off   */
+               gemtek_bu2614_set(dev, BU2614_TEST, 0);
+               gemtek_bu2614_set(dev, BU2614_STDF, GEMTEK_PLL_OFF);
+               gemtek_bu2614_set(dev, BU2614_FREQ, 0);
+               gemtek_bu2614_transmit(dev);
+       } else {
+               spin_lock(&lock);
+
+               /* Read bus contents (CE, CK and DA). */
+               i = inb_p(io);
+               /* Write it back with mute flag set. */
+               outb_p((i >> 5) | GEMTEK_MT, io);
+               udelay(SHORT_DELAY);
+
+               spin_unlock(&lock);
+       }
 }
 
-static void one(void)
+/*
+ * Unset mute flag.
+ */
+static void gemtek_unmute(struct gemtek_device *dev)
 {
-       outb_p(0x06, io);
-       udelay(5);
-       outb_p(0x07, io);
-       udelay(5);
+       int i;
+       dev->muted = 0;
+
+       if (hardmute) {
+               /* Turn PLL back on. */
+               gemtek_setfreq(dev, dev->lastfreq);
+       } else {
+               spin_lock(&lock);
+
+               i = inb_p(io);
+               outb_p(i >> 5, io);
+               udelay(SHORT_DELAY);
+
+               spin_unlock(&lock);
+       }
 }
 
-static int gemtek_setfreq(struct gemtek_device *dev, unsigned long freq)
+/*
+ * Get signal strength (= stereo status).
+ */
+static inline int gemtek_getsigstr(void)
 {
-       int i;
+       return inb_p(io) & GEMTEK_NS ? 0 : 1;
+}
 
-/*        freq = 78.25*((float)freq/16000.0 + 10.52); */
+/*
+ * Check if requested card acts like GemTek Radio card.
+ */
+static int gemtek_verify(int port)
+{
+       static int verified = -1;
+       int i, q;
 
-       freq /= 16;
-       freq += 10520;
-       freq *= 7825;
-       freq /= 100000;
+       if (verified == port)
+               return 1;
 
        spin_lock(&lock);
 
-       /* 2 start bits */
-       outb_p(0x03, io);
-       udelay(5);
-       outb_p(0x07, io);
-       udelay(5);
+       q = inb_p(port);        /* Read bus contents before probing. */
+       /* Try to turn on CE, CK and DA respectively and check if card responds
+          properly. */
+       for (i = 0; i < 3; ++i) {
+               outb_p(1 << i, port);
+               udelay(SHORT_DELAY);
 
-       /* 28 frequency bits (lsb first) */
-       for (i = 0; i < 14; i++)
-               if (freq & (1 << i))
-                       one();
-               else
-                       zero();
-       /* 36 unknown bits */
-       for (i = 0; i < 11; i++)
-               zero();
-       one();
-       for (i = 0; i < 4; i++)
-               zero();
-       one();
-       zero();
-
-       /* 2 end bits */
-       outb_p(0x03, io);
-       udelay(5);
-       outb_p(0x07, io);
-       udelay(5);
+               if ((inb_p(port) & (~GEMTEK_NS)) != (0x17 | (1 << (i + 5)))) {
+                       spin_unlock(&lock);
+                       return 0;
+               }
+       }
+       outb_p(q >> 5, port);   /* Write bus contents back. */
+       udelay(SHORT_DELAY);
 
        spin_unlock(&lock);
+       verified = port;
 
-       return 0;
+       return 1;
 }
 
-static int gemtek_getsigstr(struct gemtek_device *dev)
+/*
+ * Automatic probing for card.
+ */
+static int gemtek_probe(void)
 {
-       spin_lock(&lock);
-       inb(io);
-       udelay(5);
-       spin_unlock(&lock);
-       if (inb(io) & 8)                /* bit set = no signal present */
-               return 0;
-       return 1;               /* signal present */
+       int ioports[] = { 0x20c, 0x30c, 0x24c, 0x34c, 0x248, 0x28c };
+       int i;
+
+       if (!probe) {
+               printk(KERN_INFO "Automatic device probing disabled.\n");
+               return -1;
+       }
+
+       printk(KERN_INFO "Automatic device probing enabled.\n");
+
+       for (i = 0; i < ARRAY_SIZE(ioports); ++i) {
+               printk(KERN_INFO "Trying I/O port 0x%x...\n", ioports[i]);
+
+               if (!request_region(ioports[i], 1, "gemtek-probe")) {
+                       printk(KERN_WARNING "I/O port 0x%x busy!\n",
+                              ioports[i]);
+                       continue;
+               }
+
+               if (gemtek_verify(ioports[i])) {
+                       printk(KERN_INFO "Card found from I/O port "
+                              "0x%x!\n", ioports[i]);
+
+                       release_region(ioports[i], 1);
+
+                       io = ioports[i];
+                       return io;
+               }
+
+               release_region(ioports[i], 1);
+       }
+
+       printk(KERN_ERR "Automatic probing failed!\n");
+
+       return -1;
 }
 
-static int vidioc_querycap(struct file *file, void  *priv,
-                                       struct v4l2_capability *v)
+/*
+ * Video 4 Linux stuff.
+ */
+
+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 = 65535,
+               .default_value = 0xff,
+               .type = V4L2_CTRL_TYPE_INTEGER,
+       }
+};
+
+static struct file_operations gemtek_fops = {
+       .owner          = THIS_MODULE,
+       .open           = video_exclusive_open,
+       .release        = video_exclusive_release,
+       .ioctl          = video_ioctl2,
+       .compat_ioctl   = v4l_compat_ioctl32,
+       .llseek         = no_llseek
+};
+
+static int vidioc_querycap(struct file *file, void *priv,
+                          struct v4l2_capability *v)
 {
        strlcpy(v->driver, "radio-gemtek", sizeof(v->driver));
        strlcpy(v->card, "GemTek", sizeof(v->card));
@@ -172,28 +442,29 @@ static int vidioc_querycap(struct file *file, void  *priv,
        return 0;
 }
 
-static int vidioc_g_tuner(struct file *file, void *priv,
-                                       struct v4l2_tuner *v)
+static int vidioc_g_tuner(struct file *file, void *priv, struct v4l2_tuner *v)
 {
-       struct video_device *dev = video_devdata(file);
-       struct gemtek_device *rt = dev->priv;
-
        if (v->index > 0)
                return -EINVAL;
 
        strcpy(v->name, "FM");
        v->type = V4L2_TUNER_RADIO;
-       v->rangelow = (87*16000);
-       v->rangehigh = (108*16000);
-       v->rxsubchans = V4L2_TUNER_SUB_MONO;
-       v->capability = V4L2_TUNER_CAP_LOW;
-       v->audmode = V4L2_TUNER_MODE_MONO;
-       v->signal = 0xffff*gemtek_getsigstr(rt);
+       v->rangelow = GEMTEK_LOWFREQ;
+       v->rangehigh = GEMTEK_HIGHFREQ;
+       v->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO;
+       v->signal = 0xffff * gemtek_getsigstr();
+       if (v->signal) {
+               v->audmode = V4L2_TUNER_MODE_STEREO;
+               v->rxsubchans = V4L2_TUNER_SUB_STEREO;
+       } else {
+               v->audmode = V4L2_TUNER_MODE_MONO;
+               v->rxsubchans = V4L2_TUNER_SUB_MONO;
+       }
+
        return 0;
 }
 
-static int vidioc_s_tuner(struct file *file, void *priv,
-                                       struct v4l2_tuner *v)
+static int vidioc_s_tuner(struct file *file, void *priv, struct v4l2_tuner *v)
 {
        if (v->index > 0)
                return -EINVAL;
@@ -201,38 +472,35 @@ static int vidioc_s_tuner(struct file *file, void *priv,
 }
 
 static int vidioc_s_frequency(struct file *file, void *priv,
-                                       struct v4l2_frequency *f)
+                             struct v4l2_frequency *f)
 {
        struct video_device *dev = video_devdata(file);
        struct gemtek_device *rt = dev->priv;
 
-       rt->curfreq = f->frequency;
-       /* needs to be called twice in order for getsigstr to work */
-       gemtek_setfreq(rt, rt->curfreq);
-       gemtek_setfreq(rt, rt->curfreq);
+       gemtek_setfreq(rt, f->frequency);
+
        return 0;
 }
 
 static int vidioc_g_frequency(struct file *file, void *priv,
-                                       struct v4l2_frequency *f)
+                             struct v4l2_frequency *f)
 {
        struct video_device *dev = video_devdata(file);
        struct gemtek_device *rt = dev->priv;
 
        f->type = V4L2_TUNER_RADIO;
-       f->frequency = rt->curfreq;
+       f->frequency = rt->lastfreq;
        return 0;
 }
 
 static int vidioc_queryctrl(struct file *file, void *priv,
-                                       struct v4l2_queryctrl *qc)
+                           struct v4l2_queryctrl *qc)
 {
        int i;
 
-       for (i = 0; i < ARRAY_SIZE(radio_qctrl); 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));
+                       memcpy(qc, &(radio_qctrl[i]), sizeof(*qc));
                        return 0;
                }
        }
@@ -240,7 +508,7 @@ static int vidioc_queryctrl(struct file *file, void *priv,
 }
 
 static int vidioc_g_ctrl(struct file *file, void *priv,
-                                       struct v4l2_control *ctrl)
+                        struct v4l2_control *ctrl)
 {
        struct video_device *dev = video_devdata(file);
        struct gemtek_device *rt = dev->priv;
@@ -260,7 +528,7 @@ static int vidioc_g_ctrl(struct file *file, void *priv,
 }
 
 static int vidioc_s_ctrl(struct file *file, void *priv,
-                                       struct v4l2_control *ctrl)
+                        struct v4l2_control *ctrl)
 {
        struct video_device *dev = video_devdata(file);
        struct gemtek_device *rt = dev->priv;
@@ -282,8 +550,7 @@ static int vidioc_s_ctrl(struct file *file, void *priv,
        return -EINVAL;
 }
 
-static int vidioc_g_audio (struct file *file, void *priv,
-                                       struct v4l2_audio *a)
+static int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
 {
        if (a->index > 1)
                return -EINVAL;
@@ -306,99 +573,105 @@ static int vidioc_s_input(struct file *filp, void *priv, 
unsigned int i)
        return 0;
 }
 
-static int vidioc_s_audio(struct file *file, void *priv,
-                                       struct v4l2_audio *a)
+static int vidioc_s_audio(struct file *file, void *priv, struct v4l2_audio *a)
 {
        if (a->index != 0)
                return -EINVAL;
        return 0;
 }
 
-static struct gemtek_device gemtek_unit;
-
-static const struct file_operations gemtek_fops = {
-       .owner          = THIS_MODULE,
-       .open           = video_exclusive_open,
-       .release        = video_exclusive_release,
-       .ioctl          = video_ioctl2,
-       .compat_ioctl   = v4l_compat_ioctl32,
-       .llseek         = no_llseek,
+static struct video_device gemtek_radio = {
+       .owner                  = THIS_MODULE,
+       .name                   = "GemTek Radio card",
+       .type                   = VID_TYPE_TUNER,
+       .hardware               = VID_HARDWARE_GEMTEK,
+       .fops                   = &gemtek_fops,
+       .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
 };
 
-static struct video_device gemtek_radio=
-{
-       .owner          = THIS_MODULE,
-       .name           = "GemTek radio",
-       .type           = VID_TYPE_TUNER,
-       .fops           = &gemtek_fops,
-       .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,
-};
+/*
+ * Initialization / cleanup related stuff.
+ */
 
+/*
+ * Initilize card.
+ */
 static int __init gemtek_init(void)
 {
-       if(io==-1)
-       {
-               printk(KERN_ERR "You must set an I/O address with io=0x20c, 
io=0x30c, io=0x24c or io=0x34c (io=0x020c or io=0x248 for the combined 
sound/radiocard)\n");
-               return -EINVAL;
-       }
+       int i;
 
-       if (!request_region(io, 4, "gemtek"))
-       {
-               printk(KERN_ERR "gemtek: port 0x%x already in use\n", io);
-               return -EBUSY;
-       }
+       printk(KERN_INFO RADIO_BANNER "\n");
 
-       gemtek_radio.priv=&gemtek_unit;
+       spin_lock_init(&lock);
 
-       if(video_register_device(&gemtek_radio, VFL_TYPE_RADIO, radio_nr)==-1)
-       {
-               release_region(io, 4);
+       gemtek_probe();
+       if (io) {
+               if (!request_region(io, 1, "gemtek")) {
+                       printk(KERN_ERR "I/O port 0x%x already in use.\n", io);
+                       return -EBUSY;
+               }
+
+               if (!gemtek_verify(io))
+                       printk(KERN_WARNING "Card at I/O port 0x%x does not "
+                              "respond properly, check your "
+                              "configuration.\n", io);
+               else
+                       printk(KERN_INFO "Using I/O port 0x%x.\n", io);
+       } else if (probe) {
+               printk(KERN_ERR "Automatic probing failed and no "
+                      "fixed I/O port defined.\n");
+               return -ENODEV;
+       } else {
+               printk(KERN_ERR "Automatic probing disabled but no fixed "
+                      "I/O port defined.");
                return -EINVAL;
        }
-       printk(KERN_INFO "GemTek Radio Card driver.\n");
 
-       spin_lock_init(&lock);
+       gemtek_radio.priv = &gemtek_unit;
+
+       if (video_register_device(&gemtek_radio, VFL_TYPE_RADIO,
+               radio_nr) == -1) {
+               release_region(io, 1);
+               return -EBUSY;
+       }
 
-       /* this is _maybe_ unnecessary */
-       outb(0x01, io);
+       /* Set defaults */
+       gemtek_unit.lastfreq = GEMTEK_LOWFREQ;
+       for (i = 0; i < ARRAY_SIZE(gemtek_unit.bu2614data); ++i)
+               gemtek_unit.bu2614data[i] = 0;
 
-       /* mute card - prevents noisy bootups */
-       gemtek_unit.muted = 0;
-       gemtek_mute(&gemtek_unit);
+       if (initmute)
+               gemtek_mute(&gemtek_unit);
 
        return 0;
 }
 
-MODULE_AUTHOR("Jonas Munsin");
-MODULE_DESCRIPTION("A driver for the GemTek Radio Card");
-MODULE_LICENSE("GPL");
-
-module_param(io, int, 0);
-MODULE_PARM_DESC(io, "I/O address of the GemTek card (0x20c, 0x30c, 0x24c or 
0x34c (0x20c or 0x248 have been reported to work for the combined 
sound/radiocard)).");
-module_param(radio_nr, int, 0);
-
-static void __exit gemtek_cleanup(void)
+/*
+ * Module cleanup
+ */
+static void __exit gemtek_exit(void)
 {
+       if (shutdown) {
+               hardmute = 1;   /* Turn off PLL */
+               gemtek_mute(&gemtek_unit);
+       } else {
+               printk(KERN_INFO "Module unloaded but card not muted!\n");
+       }
+
        video_unregister_device(&gemtek_radio);
-       release_region(io,4);
+       release_region(io, 1);
 }
 
 module_init(gemtek_init);
-module_exit(gemtek_cleanup);
-
-/*
-  Local variables:
-  compile-command: "gcc -c -DMODVERSIONS -D__KERNEL__ -DMODULE -O6 -Wall 
-Wstrict-prototypes -I /home/blp/tmp/linux-2.1.111-rtrack/include 
radio-rtrack2.c"
-  End:
-*/
+module_exit(gemtek_exit);
-
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