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Diffstat (limited to 'drivers/media/radio/radio-aztech.c')
-rw-r--r--drivers/media/radio/radio-aztech.c361
1 files changed, 103 insertions, 258 deletions
diff --git a/drivers/media/radio/radio-aztech.c b/drivers/media/radio/radio-aztech.c
index 523be820f9c..705dd6f9162 100644
--- a/drivers/media/radio/radio-aztech.c
+++ b/drivers/media/radio/radio-aztech.c
@@ -1,316 +1,161 @@
-/* radio-aztech.c - Aztech radio card driver for Linux 2.2
+/*
+ * radio-aztech.c - Aztech radio card driver
*
- * Adapted to support the Video for Linux API by
+ * 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:
*
* Quay Ly
* Donald Song
- * Jason Lewis (jlewis@twilight.vtc.vsc.edu)
+ * Jason Lewis (jlewis@twilight.vtc.vsc.edu)
* 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 */
#include <linux/init.h> /* Initdata */
#include <linux/ioport.h> /* request_region */
#include <linux/delay.h> /* udelay */
-#include <asm/io.h> /* outb, outb_p */
-#include <asm/uaccess.h> /* copy to/from user */
-#include <linux/videodev.h> /* kernel radio structs */
-#include <linux/config.h> /* CONFIG_RADIO_AZTECH_PORT */
+#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"
+#include "lm7000.h"
-/* acceptable ports: 0x350 (JP3 shorted), 0x358 (JP3 open) */
+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("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;
-static struct semaphore lock;
+#define AZTECH_MAX 2
-struct az_device
-{
+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;
+
+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;
};
-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 */
-}
+/* bit definitions for register read */
+#define AZTECH_BIT_NOT_TUNED (1 << 0)
+#define AZTECH_BIT_MONO (1 << 1)
+/* bit definitions for register write */
+#define AZTECH_BIT_TUN_CE (1 << 1)
+#define AZTECH_BIT_TUN_CLK (1 << 6)
+#define AZTECH_BIT_TUN_DATA (1 << 7)
+/* bits 0 and 2 are volume control, bits 3..5 are not connected */
-static void send_0_byte (struct az_device *dev)
+static void aztech_set_pins(void *handle, u8 pins)
{
- udelay(radio_wait_time);
- outb_p(2+volconvert(dev->curvol), io);
- outb_p(64+2+volconvert(dev->curvol), io);
+ struct radio_isa_card *isa = handle;
+ struct aztech *az = container_of(isa, struct aztech, isa);
+ u8 bits = az->curvol;
+
+ if (pins & LM7000_DATA)
+ bits |= AZTECH_BIT_TUN_DATA;
+ if (pins & LM7000_CLK)
+ bits |= AZTECH_BIT_TUN_CLK;
+ if (pins & LM7000_CE)
+ bits |= AZTECH_BIT_TUN_CE;
+
+ outb_p(bits, az->isa.io);
}
-static void send_1_byte (struct az_device *dev)
+static struct radio_isa_card *aztech_alloc(void)
{
- udelay (radio_wait_time);
- outb_p(128+2+volconvert(dev->curvol), io);
- outb_p(128+64+2+volconvert(dev->curvol), io);
+ struct aztech *az = kzalloc(sizeof(*az), GFP_KERNEL);
+
+ return az ? &az->isa : NULL;
}
-static int az_setvol(struct az_device *dev, int vol)
+static int aztech_s_frequency(struct radio_isa_card *isa, u32 freq)
{
- down(&lock);
- outb (volconvert(vol), io);
- up(&lock);
+ lm7000_set_freq(freq, isa, aztech_set_pins);
+
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 az_device *dev)
+static u32 aztech_g_rxsubchans(struct radio_isa_card *isa)
{
- if (inb(io) & 2) /* bit set = no signal present */
- return 0;
- return 1; /* signal present */
+ if (inb(isa->io) & AZTECH_BIT_MONO)
+ return V4L2_TUNER_SUB_MONO;
+ return V4L2_TUNER_SUB_STEREO;
}
-static int az_getstereo(struct az_device *dev)
+static u32 aztech_g_signal(struct radio_isa_card *isa)
{
- if (inb(io) & 1) /* bit set = mono */
- return 0;
- return 1; /* stereo */
+ return (inb(isa->io) & AZTECH_BIT_NOT_TUNED) ? 0 : 0xffff;
}
-static int az_setfreq(struct az_device *dev, unsigned long frequency)
+static int aztech_s_mute_volume(struct radio_isa_card *isa, bool mute, int vol)
{
- int i;
-
- frequency += 171200; /* Add 10.7 MHz IF */
- frequency /= 800; /* Convert to 50 kHz units */
-
- down(&lock);
-
- send_0_byte (dev); /* 0: LSB of frequency */
-
- for (i = 0; i < 13; i++) /* : frequency bits (1-13) */
- if (frequency & (1 << i))
- send_1_byte (dev);
- else
- send_0_byte (dev);
-
- send_0_byte (dev); /* 14: test bit - always 0 */
- send_0_byte (dev); /* 15: test bit - always 0 */
- send_0_byte (dev); /* 16: band data 0 - always 0 */
- if (dev->stereo) /* 17: stereo (1 to enable) */
- send_1_byte (dev);
- else
- send_0_byte (dev);
-
- send_1_byte (dev); /* 18: band data 1 - unknown */
- send_0_byte (dev); /* 19: time base - always 0 */
- send_0_byte (dev); /* 20: spacing (0 = 25 kHz) */
- send_1_byte (dev); /* 21: spacing (1 = 25 kHz) */
- send_0_byte (dev); /* 22: spacing (0 = 25 kHz) */
- send_1_byte (dev); /* 23: AM/FM (FM = 1, always) */
-
- /* latch frequency */
-
- udelay (radio_wait_time);
- outb_p(128+64+volconvert(dev->curvol), io);
-
- up(&lock);
+ struct aztech *az = container_of(isa, struct aztech, isa);
+ if (mute)
+ vol = 0;
+ az->curvol = (vol & 1) + ((vol & 2) << 1);
+ outb(az->curvol, isa->io);
return 0;
}
-static int az_do_ioctl(struct inode *inode, struct file *file,
- unsigned int cmd, void *arg)
-{
- struct video_device *dev = video_devdata(file);
- struct az_device *az = dev->priv;
-
- switch(cmd)
- {
- case VIDIOCGCAP:
- {
- struct video_capability *v = arg;
- memset(v,0,sizeof(*v));
- v->type=VID_TYPE_TUNER;
- v->channels=1;
- v->audios=1;
- strcpy(v->name, "Aztech Radio");
- return 0;
- }
- case VIDIOCGTUNER:
- {
- struct video_tuner *v = arg;
- if(v->tuner) /* Only 1 tuner */
- return -EINVAL;
- v->rangelow=(87*16000);
- v->rangehigh=(108*16000);
- v->flags=VIDEO_TUNER_LOW;
- v->mode=VIDEO_MODE_AUTO;
- v->signal=0xFFFF*az_getsigstr(az);
- if(az_getstereo(az))
- v->flags|=VIDEO_TUNER_STEREO_ON;
- strcpy(v->name, "FM");
- return 0;
- }
- case VIDIOCSTUNER:
- {
- struct video_tuner *v = arg;
- if(v->tuner!=0)
- return -EINVAL;
- return 0;
- }
- case VIDIOCGFREQ:
- {
- unsigned long *freq = arg;
- *freq = az->curfreq;
- return 0;
- }
- case VIDIOCSFREQ:
- {
- unsigned long *freq = arg;
- az->curfreq = *freq;
- az_setfreq(az, az->curfreq);
- return 0;
- }
- case VIDIOCGAUDIO:
- {
- struct video_audio *v = arg;
- memset(v,0, sizeof(*v));
- v->flags|=VIDEO_AUDIO_MUTABLE|VIDEO_AUDIO_VOLUME;
- if(az->stereo)
- v->mode=VIDEO_SOUND_STEREO;
- else
- v->mode=VIDEO_SOUND_MONO;
- v->volume=az->curvol;
- v->step=16384;
- strcpy(v->name, "Radio");
- return 0;
- }
- case VIDIOCSAUDIO:
- {
- struct video_audio *v = arg;
- if(v->audio)
- return -EINVAL;
- az->curvol=v->volume;
-
- az->stereo=(v->mode&VIDEO_SOUND_STEREO)?1:0;
- if(v->flags&VIDEO_AUDIO_MUTE)
- az_setvol(az,0);
- else
- az_setvol(az,az->curvol);
- return 0;
- }
- default:
- return -ENOIOCTLCMD;
- }
-}
-
-static int az_ioctl(struct inode *inode, struct file *file,
- unsigned int cmd, unsigned long arg)
-{
- return video_usercopy(inode, file, cmd, arg, az_do_ioctl);
-}
-
-static struct az_device aztech_unit;
-
-static struct file_operations aztech_fops = {
- .owner = THIS_MODULE,
- .open = video_exclusive_open,
- .release = video_exclusive_release,
- .ioctl = az_ioctl,
- .compat_ioctl = v4l_compat_ioctl32,
- .llseek = no_llseek,
+static const struct radio_isa_ops aztech_ops = {
+ .alloc = aztech_alloc,
+ .s_mute_volume = aztech_s_mute_volume,
+ .s_frequency = aztech_s_frequency,
+ .g_rxsubchans = aztech_g_rxsubchans,
+ .g_signal = aztech_g_signal,
};
-static struct video_device aztech_radio=
-{
- .owner = THIS_MODULE,
- .name = "Aztech radio",
- .type = VID_TYPE_TUNER,
- .hardware = VID_HARDWARE_AZTECH,
- .fops = &aztech_fops,
+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 = 8,
+ .card = "Aztech Radio",
+ .ops = &aztech_ops,
+ .has_stereo = true,
+ .max_volume = 3,
};
static int __init aztech_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, "aztech"))
- {
- printk(KERN_ERR "aztech: port 0x%x already in use\n", io);
- return -EBUSY;
- }
-
- init_MUTEX(&lock);
- aztech_radio.priv=&aztech_unit;
-
- if(video_register_device(&aztech_radio, VFL_TYPE_RADIO, radio_nr)==-1)
- {
- release_region(io,2);
- return -EINVAL;
- }
-
- printk(KERN_INFO "Aztech radio card driver v1.00/19990224 rkroll@exploits.org\n");
- /* mute card - prevents noisy bootups */
- outb (0, io);
- return 0;
+ return isa_register_driver(&aztech_driver.driver, AZTECH_MAX);
}
-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_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 void __exit aztech_cleanup(void)
+static void __exit aztech_exit(void)
{
- video_unregister_device(&aztech_radio);
- release_region(io,2);
+ isa_unregister_driver(&aztech_driver.driver);
}
module_init(aztech_init);
-module_exit(aztech_cleanup);
+module_exit(aztech_exit);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-05 19:46:03 +0000