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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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[media] radio-zoltrix: Convert to radio-isa
Tested with v4l2-compliance, but not with actual hardware. Contact the linux-media mailinglist if you have this card! 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
da1ff35132
commit
6b39246cf9
2 changed files with 121 additions and 340 deletions
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@ -434,14 +434,14 @@ config RADIO_TYPHOON_MUTEFREQ
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config RADIO_ZOLTRIX
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tristate "Zoltrix 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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Note: this driver hasn't been tested since a long time due to lack
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of hardware. If you have this hardware, then please contact the
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linux-media mailinglist.
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To compile this driver as a module, choose M here: the
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module will be called radio-zoltrix.
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@ -1,5 +1,6 @@
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/* zoltrix radio plus driver for Linux radio support
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* (c) 1998 C. van Schaik <carl@leg.uct.ac.za>
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/*
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* Zoltrix Radio Plus driver
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* Copyright 1998 C. van Schaik <carl@leg.uct.ac.za>
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*
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* BUGS
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* Due to the inconsistency in reading from the signal flags
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@ -27,6 +28,14 @@
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*
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* 2006-07-24 - Converted to V4L2 API
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* by Mauro Carvalho Chehab <mchehab@infradead.org>
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*
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* Converted to the radio-isa framework by Hans Verkuil <hans.verkuil@cisco.com>
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*
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* Note that this is the driver for the Zoltrix Radio Plus.
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* This driver does not work for the Zoltrix Radio Plus 108 or the
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* Zoltrix Radio Plus for Windows.
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*
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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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@ -38,80 +47,67 @@
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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 "radio-isa.h"
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MODULE_AUTHOR("C.van Schaik");
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MODULE_AUTHOR("C. van Schaik");
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MODULE_DESCRIPTION("A driver for the Zoltrix Radio Plus.");
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MODULE_LICENSE("GPL");
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MODULE_VERSION("0.0.3");
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MODULE_VERSION("0.1.99");
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#ifndef CONFIG_RADIO_ZOLTRIX_PORT
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#define CONFIG_RADIO_ZOLTRIX_PORT -1
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#endif
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static int io = CONFIG_RADIO_ZOLTRIX_PORT;
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static int radio_nr = -1;
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#define ZOLTRIX_MAX 2
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module_param(io, int, 0);
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MODULE_PARM_DESC(io, "I/O address of the Zoltrix Radio Plus (0x20c or 0x30c)");
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module_param(radio_nr, int, 0);
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static int io[ZOLTRIX_MAX] = { [0] = CONFIG_RADIO_ZOLTRIX_PORT,
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[1 ... (ZOLTRIX_MAX - 1)] = -1 };
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static int radio_nr[ZOLTRIX_MAX] = { [0 ... (ZOLTRIX_MAX - 1)] = -1 };
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module_param_array(io, int, NULL, 0444);
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MODULE_PARM_DESC(io, "I/O addresses of the Zoltrix Radio Plus card (0x20c or 0x30c)");
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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 zoltrix {
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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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struct radio_isa_card isa;
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int curvol;
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unsigned long curfreq;
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int muted;
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unsigned int stereo;
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struct mutex lock;
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bool muted;
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};
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static struct zoltrix zoltrix_card;
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static int zol_setvol(struct zoltrix *zol, int vol)
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static struct radio_isa_card *zoltrix_alloc(void)
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{
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zol->curvol = vol;
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if (zol->muted)
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return 0;
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struct zoltrix *zol = kzalloc(sizeof(*zol), GFP_KERNEL);
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mutex_lock(&zol->lock);
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if (vol == 0) {
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outb(0, zol->io);
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outb(0, zol->io);
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inb(zol->io + 3); /* Zoltrix needs to be read to confirm */
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mutex_unlock(&zol->lock);
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return zol ? &zol->isa : NULL;
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}
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static int zoltrix_s_mute_volume(struct radio_isa_card *isa, bool mute, int vol)
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{
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struct zoltrix *zol = container_of(isa, struct zoltrix, isa);
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zol->curvol = vol;
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zol->muted = mute;
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if (mute || vol == 0) {
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outb(0, isa->io);
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outb(0, isa->io);
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inb(isa->io + 3); /* Zoltrix needs to be read to confirm */
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return 0;
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}
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outb(zol->curvol-1, zol->io);
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outb(vol - 1, isa->io);
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msleep(10);
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inb(zol->io + 2);
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mutex_unlock(&zol->lock);
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inb(isa->io + 2);
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return 0;
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}
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static void zol_mute(struct zoltrix *zol)
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/* tunes the radio to the desired frequency */
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static int zoltrix_s_frequency(struct radio_isa_card *isa, u32 freq)
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{
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zol->muted = 1;
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mutex_lock(&zol->lock);
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outb(0, zol->io);
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outb(0, zol->io);
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inb(zol->io + 3); /* Zoltrix needs to be read to confirm */
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mutex_unlock(&zol->lock);
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}
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static void zol_unmute(struct zoltrix *zol)
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{
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zol->muted = 0;
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zol_setvol(zol, zol->curvol);
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}
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static int zol_setfreq(struct zoltrix *zol, unsigned long freq)
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{
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/* tunes the radio to the desired frequency */
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struct v4l2_device *v4l2_dev = &zol->v4l2_dev;
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struct zoltrix *zol = container_of(isa, struct zoltrix, isa);
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struct v4l2_device *v4l2_dev = &isa->v4l2_dev;
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unsigned long long bitmask, f, m;
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unsigned int stereo = zol->stereo;
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bool stereo = isa->stereo;
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int i;
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if (freq == 0) {
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@ -125,340 +121,125 @@ static int zol_setfreq(struct zoltrix *zol, unsigned long freq)
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bitmask = 0xc480402c10080000ull;
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i = 45;
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mutex_lock(&zol->lock);
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outb(0, isa->io);
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outb(0, isa->io);
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inb(isa->io + 3); /* Zoltrix needs to be read to confirm */
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zol->curfreq = freq;
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outb(0, zol->io);
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outb(0, zol->io);
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inb(zol->io + 3); /* Zoltrix needs to be read to confirm */
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outb(0x40, zol->io);
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outb(0xc0, zol->io);
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outb(0x40, isa->io);
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outb(0xc0, isa->io);
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bitmask = (bitmask ^ ((f & 0xff) << 47) ^ ((f & 0xff00) << 30) ^ (stereo << 31));
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while (i--) {
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if ((bitmask & 0x8000000000000000ull) != 0) {
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outb(0x80, zol->io);
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outb(0x80, isa->io);
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udelay(50);
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outb(0x00, zol->io);
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outb(0x00, isa->io);
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udelay(50);
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outb(0x80, zol->io);
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outb(0x80, isa->io);
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udelay(50);
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} else {
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outb(0xc0, zol->io);
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outb(0xc0, isa->io);
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udelay(50);
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outb(0x40, zol->io);
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outb(0x40, isa->io);
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udelay(50);
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outb(0xc0, zol->io);
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outb(0xc0, isa->io);
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udelay(50);
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}
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bitmask *= 2;
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}
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/* termination sequence */
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outb(0x80, zol->io);
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outb(0xc0, zol->io);
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outb(0x40, zol->io);
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outb(0x80, isa->io);
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outb(0xc0, isa->io);
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outb(0x40, isa->io);
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udelay(1000);
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inb(zol->io + 2);
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inb(isa->io + 2);
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udelay(1000);
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if (zol->muted) {
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outb(0, zol->io);
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outb(0, zol->io);
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inb(zol->io + 3);
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udelay(1000);
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}
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mutex_unlock(&zol->lock);
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if (!zol->muted)
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zol_setvol(zol, zol->curvol);
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return 0;
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return zoltrix_s_mute_volume(isa, zol->muted, zol->curvol);
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}
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/* Get signal strength */
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static int zol_getsigstr(struct zoltrix *zol)
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static u32 zoltrix_g_rxsubchans(struct radio_isa_card *isa)
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{
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struct zoltrix *zol = container_of(isa, struct zoltrix, isa);
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int a, b;
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mutex_lock(&zol->lock);
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outb(0x00, zol->io); /* This stuff I found to do nothing */
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outb(zol->curvol, zol->io);
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outb(0x00, isa->io); /* This stuff I found to do nothing */
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outb(zol->curvol, isa->io);
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msleep(20);
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a = inb(zol->io);
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a = inb(isa->io);
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msleep(10);
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b = inb(zol->io);
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b = inb(isa->io);
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mutex_unlock(&zol->lock);
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return (a == b && a == 0xcf) ?
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V4L2_TUNER_SUB_STEREO : V4L2_TUNER_SUB_MONO;
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}
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static u32 zoltrix_g_signal(struct radio_isa_card *isa)
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{
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struct zoltrix *zol = container_of(isa, struct zoltrix, isa);
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int a, b;
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outb(0x00, isa->io); /* This stuff I found to do nothing */
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outb(zol->curvol, isa->io);
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msleep(20);
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a = inb(isa->io);
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msleep(10);
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b = inb(isa->io);
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if (a != b)
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return 0;
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/* I found this out by playing with a binary scanner on the card io */
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return a == 0xcf || a == 0xdf || a == 0xef;
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return (a == 0xcf || a == 0xdf || a == 0xef) ? 0xffff : 0;
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}
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static int zol_is_stereo(struct zoltrix *zol)
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static int zoltrix_s_stereo(struct radio_isa_card *isa, bool stereo)
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{
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int x1, x2;
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mutex_lock(&zol->lock);
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outb(0x00, zol->io);
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outb(zol->curvol, zol->io);
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msleep(20);
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x1 = inb(zol->io);
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msleep(10);
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x2 = inb(zol->io);
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mutex_unlock(&zol->lock);
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return x1 == x2 && x1 == 0xcf;
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return zoltrix_s_frequency(isa, isa->freq);
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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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{
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strlcpy(v->driver, "radio-zoltrix", sizeof(v->driver));
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strlcpy(v->card, "Zoltrix 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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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 zoltrix *zol = 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 = 88 * 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 (zol_is_stereo(zol))
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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 * zol_getsigstr(zol);
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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_s_frequency(struct file *file, void *priv,
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struct v4l2_frequency *f)
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{
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struct zoltrix *zol = 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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if (zol_setfreq(zol, f->frequency) != 0)
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return -EINVAL;
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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 zoltrix *zol = 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 = zol->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, 65535, 4096, 65535);
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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 zoltrix *zol = video_drvdata(file);
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switch (ctrl->id) {
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case V4L2_CID_AUDIO_MUTE:
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ctrl->value = zol->muted;
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return 0;
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case V4L2_CID_AUDIO_VOLUME:
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ctrl->value = zol->curvol * 4096;
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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 zoltrix *zol = 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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zol_mute(zol);
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else {
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zol_unmute(zol);
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zol_setvol(zol, zol->curvol);
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}
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return 0;
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case V4L2_CID_AUDIO_VOLUME:
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zol_setvol(zol, ctrl->value / 4096);
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return 0;
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}
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zol->stereo = 1;
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if (zol_setfreq(zol, zol->curfreq) != 0)
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return -EINVAL;
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#if 0
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/* FIXME: Implement stereo/mono switch on V4L2 */
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if (v->mode & VIDEO_SOUND_STEREO) {
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zol->stereo = 1;
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zol_setfreq(zol, zol->curfreq);
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}
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if (v->mode & VIDEO_SOUND_MONO) {
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zol->stereo = 0;
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zol_setfreq(zol, zol->curfreq);
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}
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#endif
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return -EINVAL;
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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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{
|
||||
return a->index ? -EINVAL : 0;
|
||||
}
|
||||
|
||||
static const struct v4l2_file_operations zoltrix_fops =
|
||||
{
|
||||
.owner = THIS_MODULE,
|
||||
.unlocked_ioctl = video_ioctl2,
|
||||
static const struct radio_isa_ops zoltrix_ops = {
|
||||
.alloc = zoltrix_alloc,
|
||||
.s_mute_volume = zoltrix_s_mute_volume,
|
||||
.s_frequency = zoltrix_s_frequency,
|
||||
.s_stereo = zoltrix_s_stereo,
|
||||
.g_rxsubchans = zoltrix_g_rxsubchans,
|
||||
.g_signal = zoltrix_g_signal,
|
||||
};
|
||||
|
||||
static const struct v4l2_ioctl_ops zoltrix_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 zoltrix_ioports[] = { 0x20c, 0x30c };
|
||||
|
||||
static struct radio_isa_driver zoltrix_driver = {
|
||||
.driver = {
|
||||
.match = radio_isa_match,
|
||||
.probe = radio_isa_probe,
|
||||
.remove = radio_isa_remove,
|
||||
.driver = {
|
||||
.name = "radio-zoltrix",
|
||||
},
|
||||
},
|
||||
.io_params = io,
|
||||
.radio_nr_params = radio_nr,
|
||||
.io_ports = zoltrix_ioports,
|
||||
.num_of_io_ports = ARRAY_SIZE(zoltrix_ioports),
|
||||
.region_size = 2,
|
||||
.card = "Zoltrix Radio Plus",
|
||||
.ops = &zoltrix_ops,
|
||||
.has_stereo = true,
|
||||
.max_volume = 15,
|
||||
};
|
||||
|
||||
static int __init zoltrix_init(void)
|
||||
{
|
||||
struct zoltrix *zol = &zoltrix_card;
|
||||
struct v4l2_device *v4l2_dev = &zol->v4l2_dev;
|
||||
int res;
|
||||
|
||||
strlcpy(v4l2_dev->name, "zoltrix", sizeof(v4l2_dev->name));
|
||||
zol->io = io;
|
||||
if (zol->io == -1) {
|
||||
v4l2_err(v4l2_dev, "You must set an I/O address with io=0x20c or 0x30c\n");
|
||||
return -EINVAL;
|
||||
}
|
||||
if (zol->io != 0x20c && zol->io != 0x30c) {
|
||||
v4l2_err(v4l2_dev, "invalid port, try 0x20c or 0x30c\n");
|
||||
return -ENXIO;
|
||||
}
|
||||
|
||||
if (!request_region(zol->io, 2, "zoltrix")) {
|
||||
v4l2_err(v4l2_dev, "port 0x%x already in use\n", zol->io);
|
||||
return -EBUSY;
|
||||
}
|
||||
|
||||
res = v4l2_device_register(NULL, v4l2_dev);
|
||||
if (res < 0) {
|
||||
release_region(zol->io, 2);
|
||||
v4l2_err(v4l2_dev, "Could not register v4l2_device\n");
|
||||
return res;
|
||||
}
|
||||
|
||||
mutex_init(&zol->lock);
|
||||
|
||||
/* mute card - prevents noisy bootups */
|
||||
|
||||
/* this ensures that the volume is all the way down */
|
||||
|
||||
outb(0, zol->io);
|
||||
outb(0, zol->io);
|
||||
msleep(20);
|
||||
inb(zol->io + 3);
|
||||
|
||||
zol->curvol = 0;
|
||||
zol->stereo = 1;
|
||||
|
||||
strlcpy(zol->vdev.name, v4l2_dev->name, sizeof(zol->vdev.name));
|
||||
zol->vdev.v4l2_dev = v4l2_dev;
|
||||
zol->vdev.fops = &zoltrix_fops;
|
||||
zol->vdev.ioctl_ops = &zoltrix_ioctl_ops;
|
||||
zol->vdev.release = video_device_release_empty;
|
||||
video_set_drvdata(&zol->vdev, zol);
|
||||
|
||||
if (video_register_device(&zol->vdev, VFL_TYPE_RADIO, radio_nr) < 0) {
|
||||
v4l2_device_unregister(v4l2_dev);
|
||||
release_region(zol->io, 2);
|
||||
return -EINVAL;
|
||||
}
|
||||
v4l2_info(v4l2_dev, "Zoltrix Radio Plus card driver.\n");
|
||||
|
||||
return 0;
|
||||
return isa_register_driver(&zoltrix_driver.driver, ZOLTRIX_MAX);
|
||||
}
|
||||
|
||||
static void __exit zoltrix_exit(void)
|
||||
{
|
||||
struct zoltrix *zol = &zoltrix_card;
|
||||
|
||||
video_unregister_device(&zol->vdev);
|
||||
v4l2_device_unregister(&zol->v4l2_dev);
|
||||
release_region(zol->io, 2);
|
||||
isa_unregister_driver(&zoltrix_driver.driver);
|
||||
}
|
||||
|
||||
module_init(zoltrix_init);
|
||||
|
|
|
|||
Loading…
Reference in a new issue