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 <pexu@kapsi.fi>
Signed-off-by: Douglas Schilling Landgraf <dougsland@gmail.com>
Reviewed-by: Trent Piepho <xyzzy@speakeasy.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
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 Seppänen <pexu@kapsi.fi>");
+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 */
+};
-/* local things */
+struct bu2614_op {
+ int op; /* Operation */
+ int size; /* Data size */
+};
-/* 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
+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}
+};
+
+static spinlock_t lock;
+
+/*
+ * Set data which will be sent to BU2614FS.
+ */
+static void gemtek_bu2614_set(struct gemtek_device *dev, int op,
+ unsigned long data)
+{
+ 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);
+
+ 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);
+}
+
+/*
+ * Convert FM-frequency for BU2614FS (3.125 KHz STDF expected).
+ */
+static inline void gemtek_convfreq(unsigned long *freq)
+{
+ (*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;
+
+ 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);
+}
+
+/*
+ * Set mute flag.
*/
static void gemtek_mute(struct gemtek_device *dev)
{
- if(dev->muted)
- return;
- spin_lock(&lock);
- outb(0x10, io);
- spin_unlock(&lock);
+ 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);
+ }
}
+/*
+ * Unset mute flag.
+ */
static void gemtek_unmute(struct gemtek_device *dev)
{
- if(dev->muted == 0)
- return;
- spin_lock(&lock);
- outb(0x20, io);
- spin_unlock(&lock);
+ 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 void zero(void)
+/*
+ * Get signal strength (= stereo status).
+ */
+static inline int gemtek_getsigstr(void)
{
- outb_p(0x04, io);
- udelay(5);
- outb_p(0x05, io);
- udelay(5);
+ return inb_p(io) & GEMTEK_NS ? 0 : 1;
}
-static void one(void)
+/*
+ * Check if requested card acts like GemTek Radio card.
+ */
+static int gemtek_verify(int port)
{
- outb_p(0x06, io);
- udelay(5);
- outb_p(0x07, io);
- udelay(5);
+ static int verified = -1;
+ int i, q;
+
+ if (verified == port)
+ return 1;
+
+ spin_lock(&lock);
+
+ 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);
+
+ 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 1;
}
-static int gemtek_setfreq(struct gemtek_device *dev, unsigned long freq)
+/*
+ * Automatic probing for card.
+ */
+static int gemtek_probe(void)
{
+ int ioports[] = { 0x20c, 0x30c, 0x24c, 0x34c, 0x248, 0x28c };
int i;
-/* freq = 78.25*((float)freq/16000.0 + 10.52); */
+ if (!probe) {
+ printk(KERN_INFO "Automatic device probing disabled.\n");
+ return -1;
+ }
- freq /= 16;
- freq += 10520;
- freq *= 7825;
- freq /= 100000;
+ printk(KERN_INFO "Automatic device probing enabled.\n");
- spin_lock(&lock);
+ for (i = 0; i < ARRAY_SIZE(ioports); ++i) {
+ printk(KERN_INFO "Trying I/O port 0x%x...\n", ioports[i]);
- /* 2 start bits */
- outb_p(0x03, io);
- udelay(5);
- outb_p(0x07, io);
- udelay(5);
+ if (!request_region(ioports[i], 1, "gemtek-probe")) {
+ printk(KERN_WARNING "I/O port 0x%x busy!\n",
+ ioports[i]);
+ continue;
+ }
- /* 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();
+ if (gemtek_verify(ioports[i])) {
+ printk(KERN_INFO "Card found from I/O port "
+ "0x%x!\n", ioports[i]);
- /* 2 end bits */
- outb_p(0x03, io);
- udelay(5);
- outb_p(0x07, io);
- udelay(5);
+ release_region(ioports[i], 1);
- spin_unlock(&lock);
+ io = ioports[i];
+ return io;
+ }
- return 0;
+ release_region(ioports[i], 1);
+ }
+
+ printk(KERN_ERR "Automatic probing failed!\n");
+
+ return -1;
}
-static int gemtek_getsigstr(struct gemtek_device *dev)
-{
- 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 */
-}
+/*
+ * Video 4 Linux stuff.
+ */
-static int vidioc_querycap(struct file *file, void *priv,
- struct v4l2_capability *v)
+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 @@
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_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_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_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 @@
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 @@
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;
- }
-
- gemtek_radio.priv=&gemtek_unit;
-
- if(video_register_device(&gemtek_radio, VFL_TYPE_RADIO, radio_nr)==-1)
- {
- release_region(io, 4);
- return -EINVAL;
- }
- printk(KERN_INFO "GemTek Radio Card driver.\n");
+ printk(KERN_INFO RADIO_BANNER "\n");
spin_lock_init(&lock);
- /* this is _maybe_ unnecessary */
- outb(0x01, io);
+ 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;
+ }
- /* mute card - prevents noisy bootups */
- gemtek_unit.muted = 0;
- gemtek_mute(&gemtek_unit);
+ 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;
+ }
+
+ gemtek_radio.priv = &gemtek_unit;
+
+ if (video_register_device(&gemtek_radio, VFL_TYPE_RADIO,
+ radio_nr) == -1) {
+ release_region(io, 1);
+ return -EBUSY;
+ }
+
+ /* Set defaults */
+ gemtek_unit.lastfreq = GEMTEK_LOWFREQ;
+ for (i = 0; i < ARRAY_SIZE(gemtek_unit.bu2614data); ++i)
+ gemtek_unit.bu2614data[i] = 0;
+
+ 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);