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Diffstat (limited to 'drivers/media/radio/radio-aztech.c')
-rw-r--r--drivers/media/radio/radio-aztech.c372
1 files changed, 80 insertions, 292 deletions
diff --git a/drivers/media/radio/radio-aztech.c b/drivers/media/radio/radio-aztech.c
index eed7b0840734..177bcbd7a7c1 100644
--- a/drivers/media/radio/radio-aztech.c
+++ b/drivers/media/radio/radio-aztech.c
@@ -1,5 +1,7 @@
-/* radio-aztech.c - Aztech radio card driver for Linux 2.2
+/*
+ * radio-aztech.c - Aztech radio card driver
*
+ * Converted to the radio-isa framework by Hans Verkuil <hans.verkuil@xs4all.nl>
* Converted to V4L2 API by Mauro Carvalho Chehab <mchehab@infradead.org>
* Adapted to support the Video for Linux API by
* Russell Kroll <rkroll@exploits.org>. Based on original tuner code by:
@@ -10,19 +12,7 @@
* 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/
- * along with more information on the card itself.
- *
- * History:
- * 1999-02-24 Russell Kroll <rkroll@exploits.org>
- * Fine tuning/VIDEO_TUNER_LOW
- * Range expanded to 87-108 MHz (from 87.9-107.8)
- *
- * Notable changes from the original source:
- * - includes stripped down to the essentials
- * - for loops used as delays replaced with udelay()
- * - #defines removed, changed to static values
- * - tuning structure changed - no more character arrays, other changes
+ * Fully tested with the Keene USB FM Transmitter and the v4l2-compliance tool.
*/
#include <linux/module.h> /* Modules */
@@ -31,126 +21,72 @@
#include <linux/delay.h> /* udelay */
#include <linux/videodev2.h> /* kernel radio structs */
#include <linux/io.h> /* outb, outb_p */
+#include <linux/slab.h>
#include <media/v4l2-device.h>
#include <media/v4l2-ioctl.h>
+#include <media/v4l2-ctrls.h>
+#include "radio-isa.h"
MODULE_AUTHOR("Russell Kroll, Quay Lu, Donald Song, Jason Lewis, Scott McGrath, William McGrath");
MODULE_DESCRIPTION("A driver for the Aztech radio card.");
MODULE_LICENSE("GPL");
-MODULE_VERSION("0.0.3");
+MODULE_VERSION("1.0.0");
/* acceptable ports: 0x350 (JP3 shorted), 0x358 (JP3 open) */
-
#ifndef CONFIG_RADIO_AZTECH_PORT
#define CONFIG_RADIO_AZTECH_PORT -1
#endif
-static int io = CONFIG_RADIO_AZTECH_PORT;
-static int radio_nr = -1;
-static int radio_wait_time = 1000;
+#define AZTECH_MAX 2
-module_param(io, int, 0);
-module_param(radio_nr, int, 0);
-MODULE_PARM_DESC(io, "I/O address of the Aztech card (0x350 or 0x358)");
+static int io[AZTECH_MAX] = { [0] = CONFIG_RADIO_AZTECH_PORT,
+ [1 ... (AZTECH_MAX - 1)] = -1 };
+static int radio_nr[AZTECH_MAX] = { [0 ... (AZTECH_MAX - 1)] = -1 };
+static const int radio_wait_time = 1000;
-struct aztech
-{
- struct v4l2_device v4l2_dev;
- struct video_device vdev;
- int io;
+module_param_array(io, int, NULL, 0444);
+MODULE_PARM_DESC(io, "I/O addresses of the Aztech card (0x350 or 0x358)");
+module_param_array(radio_nr, int, NULL, 0444);
+MODULE_PARM_DESC(radio_nr, "Radio device numbers");
+
+struct aztech {
+ struct radio_isa_card isa;
int curvol;
- unsigned long curfreq;
- int stereo;
- struct mutex lock;
};
-static struct aztech aztech_card;
-
-static int volconvert(int level)
-{
- level >>= 14; /* Map 16bits down to 2 bit */
- level &= 3;
-
- /* convert to card-friendly values */
- switch (level) {
- case 0:
- return 0;
- case 1:
- return 1;
- case 2:
- return 4;
- case 3:
- return 5;
- }
- return 0; /* Quieten gcc */
-}
-
static void send_0_byte(struct aztech *az)
{
udelay(radio_wait_time);
- outb_p(2 + volconvert(az->curvol), az->io);
- outb_p(64 + 2 + volconvert(az->curvol), az->io);
+ outb_p(2 + az->curvol, az->isa.io);
+ outb_p(64 + 2 + az->curvol, az->isa.io);
}
static void send_1_byte(struct aztech *az)
{
- udelay (radio_wait_time);
- outb_p(128 + 2 + volconvert(az->curvol), az->io);
- outb_p(128 + 64 + 2 + volconvert(az->curvol), az->io);
-}
-
-static int az_setvol(struct aztech *az, int vol)
-{
- mutex_lock(&az->lock);
- outb(volconvert(vol), az->io);
- mutex_unlock(&az->lock);
- return 0;
-}
-
-/* thanks to Michael Dwyer for giving me a dose of clues in
- * the signal strength department..
- *
- * This card has a stereo bit - bit 0 set = mono, not set = stereo
- * It also has a "signal" bit - bit 1 set = bad signal, not set = good
- *
- */
-
-static int az_getsigstr(struct aztech *az)
-{
- int sig = 1;
-
- mutex_lock(&az->lock);
- if (inb(az->io) & 2) /* bit set = no signal present */
- sig = 0;
- mutex_unlock(&az->lock);
- return sig;
+ udelay(radio_wait_time);
+ outb_p(128 + 2 + az->curvol, az->isa.io);
+ outb_p(128 + 64 + 2 + az->curvol, az->isa.io);
}
-static int az_getstereo(struct aztech *az)
+static struct radio_isa_card *aztech_alloc(void)
{
- int stereo = 1;
+ struct aztech *az = kzalloc(sizeof(*az), GFP_KERNEL);
- mutex_lock(&az->lock);
- if (inb(az->io) & 1) /* bit set = mono */
- stereo = 0;
- mutex_unlock(&az->lock);
- return stereo;
+ return az ? &az->isa : NULL;
}
-static int az_setfreq(struct aztech *az, unsigned long frequency)
+static int aztech_s_frequency(struct radio_isa_card *isa, u32 freq)
{
+ struct aztech *az = container_of(isa, struct aztech, isa);
int i;
- mutex_lock(&az->lock);
-
- az->curfreq = frequency;
- frequency += 171200; /* Add 10.7 MHz IF */
- frequency /= 800; /* Convert to 50 kHz units */
+ freq += 171200; /* Add 10.7 MHz IF */
+ freq /= 800; /* Convert to 50 kHz units */
send_0_byte(az); /* 0: LSB of frequency */
for (i = 0; i < 13; i++) /* : frequency bits (1-13) */
- if (frequency & (1 << i))
+ if (freq & (1 << i))
send_1_byte(az);
else
send_0_byte(az);
@@ -158,7 +94,7 @@ static int az_setfreq(struct aztech *az, unsigned long frequency)
send_0_byte(az); /* 14: test bit - always 0 */
send_0_byte(az); /* 15: test bit - always 0 */
send_0_byte(az); /* 16: band data 0 - always 0 */
- if (az->stereo) /* 17: stereo (1 to enable) */
+ if (isa->stereo) /* 17: stereo (1 to enable) */
send_1_byte(az);
else
send_0_byte(az);
@@ -173,225 +109,77 @@ static int az_setfreq(struct aztech *az, unsigned long frequency)
/* latch frequency */
udelay(radio_wait_time);
- outb_p(128 + 64 + volconvert(az->curvol), az->io);
-
- mutex_unlock(&az->lock);
-
- return 0;
-}
-
-static int vidioc_querycap(struct file *file, void *priv,
- struct v4l2_capability *v)
-{
- strlcpy(v->driver, "radio-aztech", sizeof(v->driver));
- strlcpy(v->card, "Aztech Radio", sizeof(v->card));
- strlcpy(v->bus_info, "ISA", sizeof(v->bus_info));
- v->capabilities = V4L2_CAP_TUNER | V4L2_CAP_RADIO;
- return 0;
-}
-
-static int vidioc_g_tuner(struct file *file, void *priv,
- struct v4l2_tuner *v)
-{
- struct aztech *az = video_drvdata(file);
-
- if (v->index > 0)
- return -EINVAL;
-
- strlcpy(v->name, "FM", sizeof(v->name));
- v->type = V4L2_TUNER_RADIO;
-
- v->rangelow = 87 * 16000;
- v->rangehigh = 108 * 16000;
- v->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
- v->capability = V4L2_TUNER_CAP_LOW;
- if (az_getstereo(az))
- v->audmode = V4L2_TUNER_MODE_STEREO;
- else
- v->audmode = V4L2_TUNER_MODE_MONO;
- v->signal = 0xFFFF * az_getsigstr(az);
-
- return 0;
-}
-
-static int vidioc_s_tuner(struct file *file, void *priv,
- struct v4l2_tuner *v)
-{
- return v->index ? -EINVAL : 0;
-}
+ outb_p(128 + 64 + az->curvol, az->isa.io);
-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)
-{
- return i ? -EINVAL : 0;
-}
-
-static int vidioc_g_audio(struct file *file, void *priv,
- struct v4l2_audio *a)
-{
- a->index = 0;
- strlcpy(a->name, "Radio", sizeof(a->name));
- a->capability = V4L2_AUDCAP_STEREO;
- return 0;
-}
-
-static int vidioc_s_audio(struct file *file, void *priv,
- struct v4l2_audio *a)
+/* thanks to Michael Dwyer for giving me a dose of clues in
+ * the signal strength department..
+ *
+ * This card has a stereo bit - bit 0 set = mono, not set = stereo
+ */
+static u32 aztech_g_rxsubchans(struct radio_isa_card *isa)
{
- return a->index ? -EINVAL : 0;
+ if (inb(isa->io) & 1)
+ return V4L2_TUNER_SUB_MONO;
+ return V4L2_TUNER_SUB_STEREO;
}
-static int vidioc_s_frequency(struct file *file, void *priv,
- struct v4l2_frequency *f)
+static int aztech_s_stereo(struct radio_isa_card *isa, bool stereo)
{
- struct aztech *az = video_drvdata(file);
-
- if (f->tuner != 0 || f->type != V4L2_TUNER_RADIO)
- return -EINVAL;
- az_setfreq(az, f->frequency);
- return 0;
+ return aztech_s_frequency(isa, isa->freq);
}
-static int vidioc_g_frequency(struct file *file, void *priv,
- struct v4l2_frequency *f)
+static int aztech_s_mute_volume(struct radio_isa_card *isa, bool mute, int vol)
{
- struct aztech *az = video_drvdata(file);
+ struct aztech *az = container_of(isa, struct aztech, isa);
- if (f->tuner != 0)
- return -EINVAL;
- f->type = V4L2_TUNER_RADIO;
- f->frequency = az->curfreq;
+ if (mute)
+ vol = 0;
+ az->curvol = (vol & 1) + ((vol & 2) << 1);
+ outb(az->curvol, isa->io);
return 0;
}
-static int vidioc_queryctrl(struct file *file, void *priv,
- struct v4l2_queryctrl *qc)
-{
- switch (qc->id) {
- case V4L2_CID_AUDIO_MUTE:
- return v4l2_ctrl_query_fill(qc, 0, 1, 1, 1);
- case V4L2_CID_AUDIO_VOLUME:
- return v4l2_ctrl_query_fill(qc, 0, 0xff, 1, 0xff);
- }
- return -EINVAL;
-}
-
-static int vidioc_g_ctrl(struct file *file, void *priv,
- struct v4l2_control *ctrl)
-{
- struct aztech *az = video_drvdata(file);
-
- switch (ctrl->id) {
- case V4L2_CID_AUDIO_MUTE:
- if (az->curvol == 0)
- ctrl->value = 1;
- else
- ctrl->value = 0;
- return 0;
- case V4L2_CID_AUDIO_VOLUME:
- ctrl->value = az->curvol * 6554;
- return 0;
- }
- return -EINVAL;
-}
-
-static int vidioc_s_ctrl(struct file *file, void *priv,
- struct v4l2_control *ctrl)
-{
- struct aztech *az = video_drvdata(file);
-
- switch (ctrl->id) {
- case V4L2_CID_AUDIO_MUTE:
- if (ctrl->value)
- az_setvol(az, 0);
- else
- az_setvol(az, az->curvol);
- return 0;
- case V4L2_CID_AUDIO_VOLUME:
- az_setvol(az, ctrl->value);
- return 0;
- }
- return -EINVAL;
-}
-
-static const struct v4l2_file_operations aztech_fops = {
- .owner = THIS_MODULE,
- .unlocked_ioctl = video_ioctl2,
+static const struct radio_isa_ops aztech_ops = {
+ .alloc = aztech_alloc,
+ .s_mute_volume = aztech_s_mute_volume,
+ .s_frequency = aztech_s_frequency,
+ .s_stereo = aztech_s_stereo,
+ .g_rxsubchans = aztech_g_rxsubchans,
};
-static const struct v4l2_ioctl_ops aztech_ioctl_ops = {
- .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 const int aztech_ioports[] = { 0x350, 0x358 };
+
+static struct radio_isa_driver aztech_driver = {
+ .driver = {
+ .match = radio_isa_match,
+ .probe = radio_isa_probe,
+ .remove = radio_isa_remove,
+ .driver = {
+ .name = "radio-aztech",
+ },
+ },
+ .io_params = io,
+ .radio_nr_params = radio_nr,
+ .io_ports = aztech_ioports,
+ .num_of_io_ports = ARRAY_SIZE(aztech_ioports),
+ .region_size = 2,
+ .card = "Aztech Radio",
+ .ops = &aztech_ops,
+ .has_stereo = true,
+ .max_volume = 3,
};
static int __init aztech_init(void)
{
- struct aztech *az = &aztech_card;
- struct v4l2_device *v4l2_dev = &az->v4l2_dev;
- int res;
-
- strlcpy(v4l2_dev->name, "aztech", sizeof(v4l2_dev->name));
- az->io = io;
-
- if (az->io == -1) {
- v4l2_err(v4l2_dev, "you must set an I/O address with io=0x350 or 0x358\n");
- return -EINVAL;
- }
-
- if (!request_region(az->io, 2, "aztech")) {
- v4l2_err(v4l2_dev, "port 0x%x already in use\n", az->io);
- return -EBUSY;
- }
-
- res = v4l2_device_register(NULL, v4l2_dev);
- if (res < 0) {
- release_region(az->io, 2);
- v4l2_err(v4l2_dev, "Could not register v4l2_device\n");
- return res;
- }
-
- mutex_init(&az->lock);
- strlcpy(az->vdev.name, v4l2_dev->name, sizeof(az->vdev.name));
- az->vdev.v4l2_dev = v4l2_dev;
- az->vdev.fops = &aztech_fops;
- az->vdev.ioctl_ops = &aztech_ioctl_ops;
- az->vdev.release = video_device_release_empty;
- video_set_drvdata(&az->vdev, az);
- /* mute card - prevents noisy bootups */
- outb(0, az->io);
-
- if (video_register_device(&az->vdev, VFL_TYPE_RADIO, radio_nr) < 0) {
- v4l2_device_unregister(v4l2_dev);
- release_region(az->io, 2);
- return -EINVAL;
- }
-
- v4l2_info(v4l2_dev, "Aztech radio card driver v1.00/19990224 rkroll@exploits.org\n");
- return 0;
+ return isa_register_driver(&aztech_driver.driver, AZTECH_MAX);
}
static void __exit aztech_exit(void)
{
- struct aztech *az = &aztech_card;
-
- video_unregister_device(&az->vdev);
- v4l2_device_unregister(&az->v4l2_dev);
- release_region(az->io, 2);
+ isa_unregister_driver(&aztech_driver.driver);
}
module_init(aztech_init);
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.