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[media] radio-aztech: Convert to radio-isa
Tested with actual hardware and the Keene USB FM Transmitter. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Hans Verkuil
Mauro Carvalho Chehab
parent
cc3c6df16b
commit
3088fba877
2 changed files with 88 additions and 305 deletions
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@ -256,15 +256,11 @@ config RADIO_RTRACK2_PORT
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config RADIO_AZTECH
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tristate "Aztech/Packard Bell Radio"
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depends on ISA && VIDEO_V4L2
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select RADIO_ISA
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---help---
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Choose Y here if you have one of these FM radio cards, and then fill
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in the port address below.
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In order to control your radio card, you will need to use programs
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that are compatible with the Video For Linux API. Information on
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this API and pointers to "v4l" programs may be found at
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<file:Documentation/video4linux/API.html>.
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To compile this driver as a module, choose M here: the
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module will be called radio-aztech.
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@ -1,5 +1,7 @@
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/* radio-aztech.c - Aztech radio card driver for Linux 2.2
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/*
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* radio-aztech.c - Aztech radio card driver
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*
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* Converted to the radio-isa framework by Hans Verkuil <hans.verkuil@xs4all.nl>
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* Converted to V4L2 API by Mauro Carvalho Chehab <mchehab@infradead.org>
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* Adapted to support the Video for Linux API by
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* Russell Kroll <rkroll@exploits.org>. Based on original tuner code by:
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@ -10,19 +12,7 @@
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* Scott McGrath (smcgrath@twilight.vtc.vsc.edu)
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* William McGrath (wmcgrath@twilight.vtc.vsc.edu)
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*
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* The basis for this code may be found at http://bigbang.vtc.vsc.edu/fmradio/
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* along with more information on the card itself.
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*
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* History:
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* 1999-02-24 Russell Kroll <rkroll@exploits.org>
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* Fine tuning/VIDEO_TUNER_LOW
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* Range expanded to 87-108 MHz (from 87.9-107.8)
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*
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* Notable changes from the original source:
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* - includes stripped down to the essentials
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* - for loops used as delays replaced with udelay()
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* - #defines removed, changed to static values
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* - tuning structure changed - no more character arrays, other changes
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* Fully tested with the Keene USB FM Transmitter and the v4l2-compliance tool.
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*/
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#include <linux/module.h> /* Modules */
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@ -33,124 +23,69 @@
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#include <linux/io.h> /* outb, outb_p */
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#include <media/v4l2-device.h>
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#include <media/v4l2-ioctl.h>
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#include <media/v4l2-ctrls.h>
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#include "radio-isa.h"
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MODULE_AUTHOR("Russell Kroll, Quay Lu, Donald Song, Jason Lewis, Scott McGrath, William McGrath");
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MODULE_DESCRIPTION("A driver for the Aztech radio card.");
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MODULE_LICENSE("GPL");
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MODULE_VERSION("0.0.3");
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MODULE_VERSION("1.0.0");
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/* acceptable ports: 0x350 (JP3 shorted), 0x358 (JP3 open) */
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#ifndef CONFIG_RADIO_AZTECH_PORT
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#define CONFIG_RADIO_AZTECH_PORT -1
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#endif
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static int io = CONFIG_RADIO_AZTECH_PORT;
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static int radio_nr = -1;
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static int radio_wait_time = 1000;
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#define AZTECH_MAX 2
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module_param(io, int, 0);
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module_param(radio_nr, int, 0);
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MODULE_PARM_DESC(io, "I/O address of the Aztech card (0x350 or 0x358)");
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static int io[AZTECH_MAX] = { [0] = CONFIG_RADIO_AZTECH_PORT,
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[1 ... (AZTECH_MAX - 1)] = -1 };
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static int radio_nr[AZTECH_MAX] = { [0 ... (AZTECH_MAX - 1)] = -1 };
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static const int radio_wait_time = 1000;
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struct aztech
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{
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struct v4l2_device v4l2_dev;
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struct video_device vdev;
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int io;
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module_param_array(io, int, NULL, 0444);
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MODULE_PARM_DESC(io, "I/O addresses of the Aztech card (0x350 or 0x358)");
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module_param_array(radio_nr, int, NULL, 0444);
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MODULE_PARM_DESC(radio_nr, "Radio device numbers");
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struct aztech {
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struct radio_isa_card isa;
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int curvol;
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unsigned long curfreq;
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int stereo;
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struct mutex lock;
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};
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static struct aztech aztech_card;
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static int volconvert(int level)
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{
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level >>= 14; /* Map 16bits down to 2 bit */
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level &= 3;
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/* convert to card-friendly values */
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switch (level) {
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case 0:
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return 0;
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case 1:
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return 1;
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case 2:
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return 4;
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case 3:
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return 5;
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}
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return 0; /* Quieten gcc */
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}
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static void send_0_byte(struct aztech *az)
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{
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udelay(radio_wait_time);
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outb_p(2 + volconvert(az->curvol), az->io);
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outb_p(64 + 2 + volconvert(az->curvol), az->io);
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outb_p(2 + az->curvol, az->isa.io);
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outb_p(64 + 2 + az->curvol, az->isa.io);
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}
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static void send_1_byte(struct aztech *az)
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{
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udelay (radio_wait_time);
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outb_p(128 + 2 + volconvert(az->curvol), az->io);
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outb_p(128 + 64 + 2 + volconvert(az->curvol), az->io);
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udelay(radio_wait_time);
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outb_p(128 + 2 + az->curvol, az->isa.io);
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outb_p(128 + 64 + 2 + az->curvol, az->isa.io);
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}
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static int az_setvol(struct aztech *az, int vol)
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static struct radio_isa_card *aztech_alloc(void)
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{
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mutex_lock(&az->lock);
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outb(volconvert(vol), az->io);
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mutex_unlock(&az->lock);
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return 0;
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struct aztech *az = kzalloc(sizeof(*az), GFP_KERNEL);
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return az ? &az->isa : NULL;
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}
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/* thanks to Michael Dwyer for giving me a dose of clues in
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* the signal strength department..
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*
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* This card has a stereo bit - bit 0 set = mono, not set = stereo
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* It also has a "signal" bit - bit 1 set = bad signal, not set = good
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*
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*/
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static int az_getsigstr(struct aztech *az)
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{
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int sig = 1;
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mutex_lock(&az->lock);
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if (inb(az->io) & 2) /* bit set = no signal present */
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sig = 0;
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mutex_unlock(&az->lock);
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return sig;
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}
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static int az_getstereo(struct aztech *az)
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{
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int stereo = 1;
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mutex_lock(&az->lock);
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if (inb(az->io) & 1) /* bit set = mono */
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stereo = 0;
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mutex_unlock(&az->lock);
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return stereo;
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}
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static int az_setfreq(struct aztech *az, unsigned long frequency)
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static int aztech_s_frequency(struct radio_isa_card *isa, u32 freq)
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{
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struct aztech *az = container_of(isa, struct aztech, isa);
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int i;
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mutex_lock(&az->lock);
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az->curfreq = frequency;
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frequency += 171200; /* Add 10.7 MHz IF */
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frequency /= 800; /* Convert to 50 kHz units */
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freq += 171200; /* Add 10.7 MHz IF */
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freq /= 800; /* Convert to 50 kHz units */
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send_0_byte(az); /* 0: LSB of frequency */
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for (i = 0; i < 13; i++) /* : frequency bits (1-13) */
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if (frequency & (1 << i))
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if (freq & (1 << i))
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send_1_byte(az);
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else
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send_0_byte(az);
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@ -158,7 +93,7 @@ static int az_setfreq(struct aztech *az, unsigned long frequency)
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send_0_byte(az); /* 14: test bit - always 0 */
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send_0_byte(az); /* 15: test bit - always 0 */
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send_0_byte(az); /* 16: band data 0 - always 0 */
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if (az->stereo) /* 17: stereo (1 to enable) */
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if (isa->stereo) /* 17: stereo (1 to enable) */
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send_1_byte(az);
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else
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send_0_byte(az);
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@ -173,225 +108,77 @@ static int az_setfreq(struct aztech *az, unsigned long frequency)
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/* latch frequency */
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udelay(radio_wait_time);
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outb_p(128 + 64 + volconvert(az->curvol), az->io);
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mutex_unlock(&az->lock);
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outb_p(128 + 64 + az->curvol, az->isa.io);
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return 0;
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}
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static int vidioc_querycap(struct file *file, void *priv,
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struct v4l2_capability *v)
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/* thanks to Michael Dwyer for giving me a dose of clues in
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* the signal strength department..
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*
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* This card has a stereo bit - bit 0 set = mono, not set = stereo
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*/
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static u32 aztech_g_rxsubchans(struct radio_isa_card *isa)
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{
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strlcpy(v->driver, "radio-aztech", sizeof(v->driver));
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strlcpy(v->card, "Aztech Radio", sizeof(v->card));
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strlcpy(v->bus_info, "ISA", sizeof(v->bus_info));
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v->capabilities = V4L2_CAP_TUNER | V4L2_CAP_RADIO;
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if (inb(isa->io) & 1)
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return V4L2_TUNER_SUB_MONO;
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return V4L2_TUNER_SUB_STEREO;
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}
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static int aztech_s_stereo(struct radio_isa_card *isa, bool stereo)
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{
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return aztech_s_frequency(isa, isa->freq);
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}
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static int aztech_s_mute_volume(struct radio_isa_card *isa, bool mute, int vol)
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{
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struct aztech *az = container_of(isa, struct aztech, isa);
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if (mute)
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vol = 0;
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az->curvol = (vol & 1) + ((vol & 2) << 1);
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outb(az->curvol, isa->io);
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return 0;
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}
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static int vidioc_g_tuner(struct file *file, void *priv,
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struct v4l2_tuner *v)
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{
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struct aztech *az = video_drvdata(file);
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if (v->index > 0)
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return -EINVAL;
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strlcpy(v->name, "FM", sizeof(v->name));
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v->type = V4L2_TUNER_RADIO;
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v->rangelow = 87 * 16000;
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v->rangehigh = 108 * 16000;
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v->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
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v->capability = V4L2_TUNER_CAP_LOW;
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if (az_getstereo(az))
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v->audmode = V4L2_TUNER_MODE_STEREO;
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else
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v->audmode = V4L2_TUNER_MODE_MONO;
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v->signal = 0xFFFF * az_getsigstr(az);
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return 0;
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}
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static int vidioc_s_tuner(struct file *file, void *priv,
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struct v4l2_tuner *v)
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{
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return v->index ? -EINVAL : 0;
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}
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static int vidioc_g_input(struct file *filp, void *priv, unsigned int *i)
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{
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*i = 0;
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return 0;
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}
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static int vidioc_s_input(struct file *filp, void *priv, unsigned int i)
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{
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return i ? -EINVAL : 0;
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}
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static int vidioc_g_audio(struct file *file, void *priv,
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struct v4l2_audio *a)
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{
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a->index = 0;
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strlcpy(a->name, "Radio", sizeof(a->name));
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a->capability = V4L2_AUDCAP_STEREO;
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return 0;
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}
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static int vidioc_s_audio(struct file *file, void *priv,
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struct v4l2_audio *a)
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{
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return a->index ? -EINVAL : 0;
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}
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static int vidioc_s_frequency(struct file *file, void *priv,
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struct v4l2_frequency *f)
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{
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struct aztech *az = video_drvdata(file);
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if (f->tuner != 0 || f->type != V4L2_TUNER_RADIO)
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return -EINVAL;
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az_setfreq(az, f->frequency);
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return 0;
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}
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static int vidioc_g_frequency(struct file *file, void *priv,
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struct v4l2_frequency *f)
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{
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struct aztech *az = video_drvdata(file);
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if (f->tuner != 0)
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return -EINVAL;
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f->type = V4L2_TUNER_RADIO;
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f->frequency = az->curfreq;
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return 0;
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}
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static int vidioc_queryctrl(struct file *file, void *priv,
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struct v4l2_queryctrl *qc)
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{
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switch (qc->id) {
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case V4L2_CID_AUDIO_MUTE:
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return v4l2_ctrl_query_fill(qc, 0, 1, 1, 1);
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case V4L2_CID_AUDIO_VOLUME:
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return v4l2_ctrl_query_fill(qc, 0, 0xff, 1, 0xff);
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}
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return -EINVAL;
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}
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static int vidioc_g_ctrl(struct file *file, void *priv,
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struct v4l2_control *ctrl)
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{
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struct aztech *az = video_drvdata(file);
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switch (ctrl->id) {
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case V4L2_CID_AUDIO_MUTE:
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if (az->curvol == 0)
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ctrl->value = 1;
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else
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ctrl->value = 0;
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return 0;
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case V4L2_CID_AUDIO_VOLUME:
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ctrl->value = az->curvol * 6554;
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return 0;
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}
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return -EINVAL;
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}
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static int vidioc_s_ctrl(struct file *file, void *priv,
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struct v4l2_control *ctrl)
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{
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struct aztech *az = video_drvdata(file);
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switch (ctrl->id) {
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case V4L2_CID_AUDIO_MUTE:
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if (ctrl->value)
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az_setvol(az, 0);
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else
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az_setvol(az, az->curvol);
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return 0;
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case V4L2_CID_AUDIO_VOLUME:
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az_setvol(az, ctrl->value);
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return 0;
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}
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return -EINVAL;
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}
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static const struct v4l2_file_operations aztech_fops = {
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.owner = THIS_MODULE,
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.unlocked_ioctl = video_ioctl2,
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static const struct radio_isa_ops aztech_ops = {
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.alloc = aztech_alloc,
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.s_mute_volume = aztech_s_mute_volume,
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.s_frequency = aztech_s_frequency,
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.s_stereo = aztech_s_stereo,
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.g_rxsubchans = aztech_g_rxsubchans,
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};
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static const struct v4l2_ioctl_ops aztech_ioctl_ops = {
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.vidioc_querycap = vidioc_querycap,
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.vidioc_g_tuner = vidioc_g_tuner,
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.vidioc_s_tuner = vidioc_s_tuner,
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.vidioc_g_audio = vidioc_g_audio,
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.vidioc_s_audio = vidioc_s_audio,
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.vidioc_g_input = vidioc_g_input,
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.vidioc_s_input = vidioc_s_input,
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.vidioc_g_frequency = vidioc_g_frequency,
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.vidioc_s_frequency = vidioc_s_frequency,
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.vidioc_queryctrl = vidioc_queryctrl,
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.vidioc_g_ctrl = vidioc_g_ctrl,
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.vidioc_s_ctrl = vidioc_s_ctrl,
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static const int aztech_ioports[] = { 0x350, 0x358 };
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static struct radio_isa_driver aztech_driver = {
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.driver = {
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.match = radio_isa_match,
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.probe = radio_isa_probe,
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.remove = radio_isa_remove,
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.driver = {
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.name = "radio-aztech",
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},
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},
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.io_params = io,
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.radio_nr_params = radio_nr,
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.io_ports = aztech_ioports,
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.num_of_io_ports = ARRAY_SIZE(aztech_ioports),
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.region_size = 2,
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.card = "Aztech Radio",
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.ops = &aztech_ops,
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.has_stereo = true,
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.max_volume = 3,
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};
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static int __init aztech_init(void)
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{
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struct aztech *az = &aztech_card;
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struct v4l2_device *v4l2_dev = &az->v4l2_dev;
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int res;
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strlcpy(v4l2_dev->name, "aztech", sizeof(v4l2_dev->name));
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az->io = io;
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if (az->io == -1) {
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v4l2_err(v4l2_dev, "you must set an I/O address with io=0x350 or 0x358\n");
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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);
|
||||
|
|
|
|||
Loading…
Reference in a new issue