forked from Minki/linux
[media] radio-typhoon: 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
1d211f26b5
commit
da1ff35132
@ -400,14 +400,14 @@ config RADIO_TRUST_PORT
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config RADIO_TYPHOON
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tristate "Typhoon Radio (a.k.a. EcoRadio)"
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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 and the frequency used for muting 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-typhoon.
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@ -35,61 +35,50 @@
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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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#define DRIVER_VERSION "0.1.2"
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MODULE_AUTHOR("Dr. Henrik Seidel");
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MODULE_DESCRIPTION("A driver for the Typhoon radio card (a.k.a. EcoRadio).");
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MODULE_LICENSE("GPL");
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MODULE_VERSION(DRIVER_VERSION);
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MODULE_VERSION("0.1.99");
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#ifndef CONFIG_RADIO_TYPHOON_PORT
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#define CONFIG_RADIO_TYPHOON_PORT -1
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#endif
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#ifndef CONFIG_RADIO_TYPHOON_MUTEFREQ
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#define CONFIG_RADIO_TYPHOON_MUTEFREQ 0
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#define CONFIG_RADIO_TYPHOON_MUTEFREQ 87000
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#endif
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static int io = CONFIG_RADIO_TYPHOON_PORT;
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static int radio_nr = -1;
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module_param(io, int, 0);
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MODULE_PARM_DESC(io, "I/O address of the Typhoon card (0x316 or 0x336)");
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module_param(radio_nr, int, 0);
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#define TYPHOON_MAX 2
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static int io[TYPHOON_MAX] = { [0] = CONFIG_RADIO_TYPHOON_PORT,
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[1 ... (TYPHOON_MAX - 1)] = -1 };
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static int radio_nr[TYPHOON_MAX] = { [0 ... (TYPHOON_MAX - 1)] = -1 };
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static unsigned long mutefreq = CONFIG_RADIO_TYPHOON_MUTEFREQ;
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module_param_array(io, int, NULL, 0444);
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MODULE_PARM_DESC(io, "I/O addresses of the Typhoon card (0x316 or 0x336)");
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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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module_param(mutefreq, ulong, 0);
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MODULE_PARM_DESC(mutefreq, "Frequency used when muting the card (in kHz)");
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#define BANNER "Typhoon Radio Card driver v" DRIVER_VERSION "\n"
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struct typhoon {
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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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int curvol;
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struct radio_isa_card isa;
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int muted;
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unsigned long curfreq;
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unsigned long mutefreq;
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struct mutex lock;
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};
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static struct typhoon typhoon_card;
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static void typhoon_setvol_generic(struct typhoon *dev, int vol)
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static struct radio_isa_card *typhoon_alloc(void)
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{
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mutex_lock(&dev->lock);
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vol >>= 14; /* Map 16 bit to 2 bit */
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vol &= 3;
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outb_p(vol / 2, dev->io); /* Set the volume, high bit. */
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outb_p(vol % 2, dev->io + 2); /* Set the volume, low bit. */
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mutex_unlock(&dev->lock);
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struct typhoon *ty = kzalloc(sizeof(*ty), GFP_KERNEL);
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return ty ? &ty->isa : NULL;
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}
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static int typhoon_setfreq_generic(struct typhoon *dev,
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unsigned long frequency)
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static int typhoon_s_frequency(struct radio_isa_card *isa, u32 freq)
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{
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unsigned long outval;
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unsigned long x;
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@ -105,302 +94,86 @@ static int typhoon_setfreq_generic(struct typhoon *dev,
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*
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*/
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mutex_lock(&dev->lock);
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x = frequency / 160;
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x = freq / 160;
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outval = (x * x + 2500) / 5000;
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outval = (outval * x + 5000) / 10000;
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outval -= (10 * x * x + 10433) / 20866;
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outval += 4 * x - 11505;
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outb_p((outval >> 8) & 0x01, dev->io + 4);
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outb_p(outval >> 9, dev->io + 6);
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outb_p(outval & 0xff, dev->io + 8);
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mutex_unlock(&dev->lock);
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outb_p((outval >> 8) & 0x01, isa->io + 4);
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outb_p(outval >> 9, isa->io + 6);
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outb_p(outval & 0xff, isa->io + 8);
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return 0;
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}
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static int typhoon_setfreq(struct typhoon *dev, unsigned long frequency)
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static int typhoon_s_mute_volume(struct radio_isa_card *isa, bool mute, int vol)
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{
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typhoon_setfreq_generic(dev, frequency);
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dev->curfreq = frequency;
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return 0;
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}
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struct typhoon *ty = container_of(isa, struct typhoon, isa);
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static void typhoon_mute(struct typhoon *dev)
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{
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if (dev->muted == 1)
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return;
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typhoon_setvol_generic(dev, 0);
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typhoon_setfreq_generic(dev, dev->mutefreq);
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dev->muted = 1;
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}
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if (mute)
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vol = 0;
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vol >>= 14; /* Map 16 bit to 2 bit */
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vol &= 3;
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outb_p(vol / 2, isa->io); /* Set the volume, high bit. */
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outb_p(vol % 2, isa->io + 2); /* Set the volume, low bit. */
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static void typhoon_unmute(struct typhoon *dev)
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{
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if (dev->muted == 0)
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return;
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typhoon_setfreq_generic(dev, dev->curfreq);
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typhoon_setvol_generic(dev, dev->curvol);
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dev->muted = 0;
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}
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static int typhoon_setvol(struct typhoon *dev, int vol)
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{
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if (dev->muted && vol != 0) { /* user is unmuting the card */
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dev->curvol = vol;
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typhoon_unmute(dev);
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return 0;
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if (vol == 0 && !ty->muted) {
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ty->muted = true;
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return typhoon_s_frequency(isa, mutefreq << 4);
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}
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if (vol == dev->curvol) /* requested volume == current */
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return 0;
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if (vol == 0) { /* volume == 0 means mute the card */
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typhoon_mute(dev);
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dev->curvol = vol;
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return 0;
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if (vol && ty->muted) {
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ty->muted = false;
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return typhoon_s_frequency(isa, isa->freq);
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}
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typhoon_setvol_generic(dev, vol);
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dev->curvol = vol;
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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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{
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strlcpy(v->driver, "radio-typhoon", sizeof(v->driver));
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strlcpy(v->card, "Typhoon 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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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 = 87.5 * 16000;
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v->rangehigh = 108 * 16000;
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v->rxsubchans = V4L2_TUNER_SUB_MONO;
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v->capability = V4L2_TUNER_CAP_LOW;
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v->audmode = V4L2_TUNER_MODE_MONO;
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v->signal = 0xFFFF; /* We can't get the signal strength */
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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_frequency(struct file *file, void *priv,
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struct v4l2_frequency *f)
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{
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struct typhoon *dev = 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 = dev->curfreq;
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return 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 typhoon *dev = 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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dev->curfreq = f->frequency;
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typhoon_setfreq(dev, dev->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, 16384, 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 typhoon *dev = 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 = dev->muted;
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return 0;
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case V4L2_CID_AUDIO_VOLUME:
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ctrl->value = dev->curvol;
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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 typhoon *dev = 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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typhoon_mute(dev);
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else
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typhoon_unmute(dev);
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return 0;
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case V4L2_CID_AUDIO_VOLUME:
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typhoon_setvol(dev, 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 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_log_status(struct file *file, void *priv)
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{
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struct typhoon *dev = video_drvdata(file);
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struct v4l2_device *v4l2_dev = &dev->v4l2_dev;
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v4l2_info(v4l2_dev, BANNER);
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#ifdef MODULE
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v4l2_info(v4l2_dev, "Load type: Driver loaded as a module\n\n");
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#else
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v4l2_info(v4l2_dev, "Load type: Driver compiled into kernel\n\n");
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#endif
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v4l2_info(v4l2_dev, "frequency = %lu kHz\n", dev->curfreq >> 4);
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v4l2_info(v4l2_dev, "volume = %d\n", dev->curvol);
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v4l2_info(v4l2_dev, "mute = %s\n", dev->muted ? "on" : "off");
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v4l2_info(v4l2_dev, "io = 0x%x\n", dev->io);
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v4l2_info(v4l2_dev, "mute frequency = %lu kHz\n", dev->mutefreq >> 4);
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return 0;
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}
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static const struct v4l2_file_operations typhoon_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 typhoon_ops = {
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.alloc = typhoon_alloc,
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.s_mute_volume = typhoon_s_mute_volume,
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.s_frequency = typhoon_s_frequency,
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};
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static const struct v4l2_ioctl_ops typhoon_ioctl_ops = {
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.vidioc_log_status = vidioc_log_status,
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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 typhoon_ioports[] = { 0x316, 0x336 };
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static struct radio_isa_driver typhoon_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-typhoon",
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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 = typhoon_ioports,
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.num_of_io_ports = ARRAY_SIZE(typhoon_ioports),
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.region_size = 8,
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.card = "Typhoon Radio",
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.ops = &typhoon_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 typhoon_init(void)
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{
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struct typhoon *dev = &typhoon_card;
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struct v4l2_device *v4l2_dev = &dev->v4l2_dev;
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int res;
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strlcpy(v4l2_dev->name, "typhoon", sizeof(v4l2_dev->name));
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dev->io = io;
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if (dev->io == -1) {
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v4l2_err(v4l2_dev, "You must set an I/O address with io=0x316 or io=0x336\n");
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return -EINVAL;
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if (mutefreq < 87000 || mutefreq > 108000) {
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printk(KERN_ERR "%s: You must set a frequency (in kHz) used when muting the card,\n",
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typhoon_driver.driver.driver.name);
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printk(KERN_ERR "%s: e.g. with \"mutefreq=87500\" (87000 <= mutefreq <= 108000)\n",
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typhoon_driver.driver.driver.name);
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return -ENODEV;
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}
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if (mutefreq < 87000 || mutefreq > 108500) {
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v4l2_err(v4l2_dev, "You must set a frequency (in kHz) used when muting the card,\n");
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v4l2_err(v4l2_dev, "e.g. with \"mutefreq=87500\" (87000 <= mutefreq <= 108500)\n");
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return -EINVAL;
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}
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dev->curfreq = dev->mutefreq = mutefreq << 4;
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mutex_init(&dev->lock);
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if (!request_region(dev->io, 8, "typhoon")) {
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v4l2_err(v4l2_dev, "port 0x%x already in use\n",
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dev->io);
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return -EBUSY;
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}
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res = v4l2_device_register(NULL, v4l2_dev);
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if (res < 0) {
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release_region(dev->io, 8);
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v4l2_err(v4l2_dev, "Could not register v4l2_device\n");
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return res;
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}
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v4l2_info(v4l2_dev, BANNER);
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strlcpy(dev->vdev.name, v4l2_dev->name, sizeof(dev->vdev.name));
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dev->vdev.v4l2_dev = v4l2_dev;
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dev->vdev.fops = &typhoon_fops;
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dev->vdev.ioctl_ops = &typhoon_ioctl_ops;
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dev->vdev.release = video_device_release_empty;
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video_set_drvdata(&dev->vdev, dev);
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/* mute card - prevents noisy bootups */
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typhoon_mute(dev);
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|
||||
if (video_register_device(&dev->vdev, VFL_TYPE_RADIO, radio_nr) < 0) {
|
||||
v4l2_device_unregister(&dev->v4l2_dev);
|
||||
release_region(dev->io, 8);
|
||||
return -EINVAL;
|
||||
}
|
||||
v4l2_info(v4l2_dev, "port 0x%x.\n", dev->io);
|
||||
v4l2_info(v4l2_dev, "mute frequency is %lu kHz.\n", mutefreq);
|
||||
|
||||
return 0;
|
||||
return isa_register_driver(&typhoon_driver.driver, TYPHOON_MAX);
|
||||
}
|
||||
|
||||
static void __exit typhoon_exit(void)
|
||||
{
|
||||
struct typhoon *dev = &typhoon_card;
|
||||
|
||||
video_unregister_device(&dev->vdev);
|
||||
v4l2_device_unregister(&dev->v4l2_dev);
|
||||
release_region(dev->io, 8);
|
||||
isa_unregister_driver(&typhoon_driver.driver);
|
||||
}
|
||||
|
||||
|
||||
module_init(typhoon_init);
|
||||
module_exit(typhoon_exit);
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user