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[media] radio-aimslab: Convert to radio-isa
Tested with actual hardware and the Keene USB FM Transmitter. Improved the volume handling delays through trial and error. 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
137c579c12
commit
cc3c6df16b
2 changed files with 111 additions and 339 deletions
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@ -202,6 +202,7 @@ config RADIO_CADET
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config RADIO_RTRACK
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tristate "AIMSlab RadioTrack (aka RadioReveal) support"
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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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@ -215,11 +216,7 @@ config RADIO_RTRACK
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You must also pass the module a suitable io parameter, 0x248 has
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been reported to be used by these cards.
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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>. More information is
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contained in the file
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More information is contained in the file
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<file:Documentation/video4linux/radiotrack.txt>.
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To compile this driver as a module, choose M here: the
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@ -228,7 +225,7 @@ config RADIO_RTRACK
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config RADIO_RTRACK_PORT
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hex "RadioTrack i/o port (0x20f or 0x30f)"
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depends on RADIO_RTRACK=y
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default "20f"
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default "30f"
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help
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Enter either 0x30f or 0x20f here. The card default is 0x30f, if you
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haven't changed the jumper setting on the card.
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@ -1,16 +1,13 @@
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/* radiotrack (radioreveal) driver for Linux radio support
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* (c) 1997 M. Kirkwood
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/*
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* AimsLab RadioTrack (aka RadioVeveal) driver
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*
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* Copyright 1997 M. Kirkwood
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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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* Converted to V4L2 API by Mauro Carvalho Chehab <mchehab@infradead.org>
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* Converted to new API by Alan Cox <alan@lxorguk.ukuu.org.uk>
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* Various bugfixes and enhancements by Russell Kroll <rkroll@exploits.org>
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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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* Frequency range expanded to start at 87 MHz
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*
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* TODO: Allow for more than one of these foolish entities :-)
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*
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* Notes on the hardware (reverse engineered from other peoples'
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* reverse engineering of AIMS' code :-)
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*
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@ -26,6 +23,7 @@
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* wait(a_wee_while);
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* out(port, stop_changing_the_volume);
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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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@ -36,399 +34,176 @@
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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("M.Kirkwood");
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MODULE_AUTHOR("M. Kirkwood");
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MODULE_DESCRIPTION("A driver for the RadioTrack/RadioReveal 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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#ifndef CONFIG_RADIO_RTRACK_PORT
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#define CONFIG_RADIO_RTRACK_PORT -1
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#endif
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static int io = CONFIG_RADIO_RTRACK_PORT;
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static int radio_nr = -1;
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#define RTRACK_MAX 2
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module_param(io, int, 0);
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MODULE_PARM_DESC(io, "I/O address of the RadioTrack card (0x20f or 0x30f)");
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module_param(radio_nr, int, 0);
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static int io[RTRACK_MAX] = { [0] = CONFIG_RADIO_RTRACK_PORT,
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[1 ... (RTRACK_MAX - 1)] = -1 };
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static int radio_nr[RTRACK_MAX] = { [0 ... (RTRACK_MAX - 1)] = -1 };
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struct rtrack
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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 port;
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module_param_array(io, int, NULL, 0444);
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MODULE_PARM_DESC(io, "I/O addresses of the RadioTrack card (0x20f or 0x30f)");
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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 rtrack {
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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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int io;
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struct mutex lock;
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};
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static struct rtrack rtrack_card;
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/* local things */
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static void rt_decvol(struct rtrack *rt)
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static struct radio_isa_card *rtrack_alloc(void)
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{
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outb(0x58, rt->io); /* volume down + sigstr + on */
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msleep(100);
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outb(0xd8, rt->io); /* volume steady + sigstr + on */
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struct rtrack *rt = kzalloc(sizeof(struct rtrack), GFP_KERNEL);
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if (rt)
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rt->curvol = 0xff;
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return rt ? &rt->isa : NULL;
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}
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static void rt_incvol(struct rtrack *rt)
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{
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outb(0x98, rt->io); /* volume up + sigstr + on */
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msleep(100);
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outb(0xd8, rt->io); /* volume steady + sigstr + on */
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}
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static void rt_mute(struct rtrack *rt)
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{
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rt->muted = 1;
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mutex_lock(&rt->lock);
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outb(0xd0, rt->io); /* volume steady, off */
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mutex_unlock(&rt->lock);
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}
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static int rt_setvol(struct rtrack *rt, int vol)
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{
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int i;
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mutex_lock(&rt->lock);
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if (vol == rt->curvol) { /* requested volume = current */
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if (rt->muted) { /* user is unmuting the card */
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rt->muted = 0;
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outb(0xd8, rt->io); /* enable card */
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}
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mutex_unlock(&rt->lock);
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return 0;
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}
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if (vol == 0) { /* volume = 0 means mute the card */
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outb(0x48, rt->io); /* volume down but still "on" */
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msleep(2000); /* make sure it's totally down */
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outb(0xd0, rt->io); /* volume steady, off */
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rt->curvol = 0; /* track the volume state! */
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mutex_unlock(&rt->lock);
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return 0;
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}
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rt->muted = 0;
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if (vol > rt->curvol)
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for (i = rt->curvol; i < vol; i++)
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rt_incvol(rt);
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else
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for (i = rt->curvol; i > vol; i--)
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rt_decvol(rt);
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rt->curvol = vol;
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mutex_unlock(&rt->lock);
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return 0;
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}
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/* the 128+64 on these outb's is to keep the volume stable while tuning
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* without them, the volume _will_ creep up with each frequency change
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* and bit 4 (+16) is to keep the signal strength meter enabled
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/* The 128+64 on these outb's is to keep the volume stable while tuning.
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* Without them, the volume _will_ creep up with each frequency change
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* and bit 4 (+16) is to keep the signal strength meter enabled.
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*/
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static void send_0_byte(struct rtrack *rt)
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static void send_0_byte(struct radio_isa_card *isa, int on)
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{
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if (rt->curvol == 0 || rt->muted) {
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outb_p(128+64+16+ 1, rt->io); /* wr-enable + data low */
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outb_p(128+64+16+2+1, rt->io); /* clock */
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}
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else {
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outb_p(128+64+16+8+ 1, rt->io); /* on + wr-enable + data low */
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outb_p(128+64+16+8+2+1, rt->io); /* clock */
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}
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outb_p(128+64+16+on+1, isa->io); /* wr-enable + data low */
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outb_p(128+64+16+on+2+1, isa->io); /* clock */
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msleep(1);
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}
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static void send_1_byte(struct rtrack *rt)
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static void send_1_byte(struct radio_isa_card *isa, int on)
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{
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if (rt->curvol == 0 || rt->muted) {
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outb_p(128+64+16+4 +1, rt->io); /* wr-enable+data high */
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outb_p(128+64+16+4+2+1, rt->io); /* clock */
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}
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else {
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outb_p(128+64+16+8+4 +1, rt->io); /* on+wr-enable+data high */
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outb_p(128+64+16+8+4+2+1, rt->io); /* clock */
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}
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outb_p(128+64+16+on+4+1, isa->io); /* wr-enable+data high */
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outb_p(128+64+16+on+4+2+1, isa->io); /* clock */
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msleep(1);
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}
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static int rt_setfreq(struct rtrack *rt, unsigned long freq)
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static int rtrack_s_frequency(struct radio_isa_card *isa, u32 freq)
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{
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int on = v4l2_ctrl_g_ctrl(isa->mute) ? 0 : 8;
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int i;
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mutex_lock(&rt->lock); /* Stop other ops interfering */
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rt->curfreq = freq;
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/* now uses VIDEO_TUNER_LOW for fine tuning */
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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(rt); /* 0: LSB of frequency */
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send_0_byte(isa, on); /* 0: LSB of frequency */
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for (i = 0; i < 13; i++) /* : frequency bits (1-13) */
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if (freq & (1 << i))
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send_1_byte(rt);
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send_1_byte(isa, on);
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else
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send_0_byte(rt);
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send_0_byte(isa, on);
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send_0_byte(rt); /* 14: test bit - always 0 */
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send_0_byte(rt); /* 15: test bit - always 0 */
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send_0_byte(isa, on); /* 14: test bit - always 0 */
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send_0_byte(isa, on); /* 15: test bit - always 0 */
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send_0_byte(rt); /* 16: band data 0 - always 0 */
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send_0_byte(rt); /* 17: band data 1 - always 0 */
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send_0_byte(rt); /* 18: band data 2 - always 0 */
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send_0_byte(rt); /* 19: time base - always 0 */
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send_0_byte(isa, on); /* 16: band data 0 - always 0 */
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send_0_byte(isa, on); /* 17: band data 1 - always 0 */
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send_0_byte(isa, on); /* 18: band data 2 - always 0 */
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send_0_byte(isa, on); /* 19: time base - always 0 */
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send_0_byte(rt); /* 20: spacing (0 = 25 kHz) */
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send_1_byte(rt); /* 21: spacing (1 = 25 kHz) */
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send_0_byte(rt); /* 22: spacing (0 = 25 kHz) */
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send_1_byte(rt); /* 23: AM/FM (FM = 1, always) */
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if (rt->curvol == 0 || rt->muted)
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outb(0xd0, rt->io); /* volume steady + sigstr */
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else
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outb(0xd8, rt->io); /* volume steady + sigstr + on */
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mutex_unlock(&rt->lock);
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send_0_byte(isa, on); /* 20: spacing (0 = 25 kHz) */
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send_1_byte(isa, on); /* 21: spacing (1 = 25 kHz) */
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send_0_byte(isa, on); /* 22: spacing (0 = 25 kHz) */
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send_1_byte(isa, on); /* 23: AM/FM (FM = 1, always) */
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outb(0xd0 + on, isa->io); /* volume steady + sigstr */
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return 0;
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}
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static int rt_getsigstr(struct rtrack *rt)
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static u32 rtrack_g_signal(struct radio_isa_card *isa)
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{
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int sig = 1;
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mutex_lock(&rt->lock);
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if (inb(rt->io) & 2) /* bit set = no signal present */
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sig = 0;
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mutex_unlock(&rt->lock);
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return sig;
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/* bit set = no signal present */
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return 0xffff * !(inb(isa->io) & 2);
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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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static int rtrack_s_mute_volume(struct radio_isa_card *isa, bool mute, int vol)
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{
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strlcpy(v->driver, "radio-aimslab", sizeof(v->driver));
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strlcpy(v->card, "RadioTrack", 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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struct rtrack *rt = container_of(isa, struct rtrack, isa);
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int curvol = rt->curvol;
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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 rtrack *rt = 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;
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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 * rt_getsigstr(rt);
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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 rtrack *rt = 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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rt_setfreq(rt, 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 rtrack *rt = 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 = rt->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 rtrack *rt = 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 = rt->muted;
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return 0;
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case V4L2_CID_AUDIO_VOLUME:
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ctrl->value = rt->curvol;
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if (mute) {
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outb(0xd0, isa->io); /* volume steady + sigstr + off */
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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 rtrack *rt = 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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rt_mute(rt);
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else
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rt_setvol(rt, rt->curvol);
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return 0;
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case V4L2_CID_AUDIO_VOLUME:
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rt_setvol(rt, ctrl->value);
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return 0;
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if (vol == 0) { /* volume = 0 means mute the card */
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outb(0x48, isa->io); /* volume down but still "on" */
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msleep(curvol * 3); /* make sure it's totally down */
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} else if (curvol < vol) {
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outb(0x98, isa->io); /* volume up + sigstr + on */
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for (; curvol < vol; curvol++)
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udelay(3000);
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} else if (curvol > vol) {
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outb(0x58, isa->io); /* volume down + sigstr + on */
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for (; curvol > vol; curvol--)
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udelay(3000);
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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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outb(0xd8, isa->io); /* volume steady + sigstr + on */
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rt->curvol = vol;
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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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/* Mute card - prevents noisy bootups */
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static int rtrack_initialize(struct radio_isa_card *isa)
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{
|
||||
return i ? -EINVAL : 0;
|
||||
}
|
||||
|
||||
static int vidioc_g_audio(struct file *file, void *priv,
|
||||
struct v4l2_audio *a)
|
||||
{
|
||||
a->index = 0;
|
||||
strlcpy(a->name, "Radio", sizeof(a->name));
|
||||
a->capability = V4L2_AUDCAP_STEREO;
|
||||
/* this ensures that the volume is all the way up */
|
||||
outb(0x90, isa->io); /* volume up but still "on" */
|
||||
msleep(3000); /* make sure it's totally up */
|
||||
outb(0xc0, isa->io); /* steady volume, mute card */
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int vidioc_s_audio(struct file *file, void *priv,
|
||||
struct v4l2_audio *a)
|
||||
{
|
||||
return a->index ? -EINVAL : 0;
|
||||
}
|
||||
|
||||
static const struct v4l2_file_operations rtrack_fops = {
|
||||
.owner = THIS_MODULE,
|
||||
.unlocked_ioctl = video_ioctl2,
|
||||
static const struct radio_isa_ops rtrack_ops = {
|
||||
.alloc = rtrack_alloc,
|
||||
.init = rtrack_initialize,
|
||||
.s_mute_volume = rtrack_s_mute_volume,
|
||||
.s_frequency = rtrack_s_frequency,
|
||||
.g_signal = rtrack_g_signal,
|
||||
};
|
||||
|
||||
static const struct v4l2_ioctl_ops rtrack_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 rtrack_ioports[] = { 0x20f, 0x30f };
|
||||
|
||||
static struct radio_isa_driver rtrack_driver = {
|
||||
.driver = {
|
||||
.match = radio_isa_match,
|
||||
.probe = radio_isa_probe,
|
||||
.remove = radio_isa_remove,
|
||||
.driver = {
|
||||
.name = "radio-aimslab",
|
||||
},
|
||||
},
|
||||
.io_params = io,
|
||||
.radio_nr_params = radio_nr,
|
||||
.io_ports = rtrack_ioports,
|
||||
.num_of_io_ports = ARRAY_SIZE(rtrack_ioports),
|
||||
.region_size = 2,
|
||||
.card = "AIMSlab RadioTrack/RadioReveal",
|
||||
.ops = &rtrack_ops,
|
||||
.has_stereo = true,
|
||||
.max_volume = 0xff,
|
||||
};
|
||||
|
||||
static int __init rtrack_init(void)
|
||||
{
|
||||
struct rtrack *rt = &rtrack_card;
|
||||
struct v4l2_device *v4l2_dev = &rt->v4l2_dev;
|
||||
int res;
|
||||
|
||||
strlcpy(v4l2_dev->name, "rtrack", sizeof(v4l2_dev->name));
|
||||
rt->io = io;
|
||||
|
||||
if (rt->io == -1) {
|
||||
v4l2_err(v4l2_dev, "you must set an I/O address with io=0x20f or 0x30f\n");
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
if (!request_region(rt->io, 2, "rtrack")) {
|
||||
v4l2_err(v4l2_dev, "port 0x%x already in use\n", rt->io);
|
||||
return -EBUSY;
|
||||
}
|
||||
|
||||
res = v4l2_device_register(NULL, v4l2_dev);
|
||||
if (res < 0) {
|
||||
release_region(rt->io, 2);
|
||||
v4l2_err(v4l2_dev, "could not register v4l2_device\n");
|
||||
return res;
|
||||
}
|
||||
|
||||
strlcpy(rt->vdev.name, v4l2_dev->name, sizeof(rt->vdev.name));
|
||||
rt->vdev.v4l2_dev = v4l2_dev;
|
||||
rt->vdev.fops = &rtrack_fops;
|
||||
rt->vdev.ioctl_ops = &rtrack_ioctl_ops;
|
||||
rt->vdev.release = video_device_release_empty;
|
||||
video_set_drvdata(&rt->vdev, rt);
|
||||
|
||||
/* Set up the I/O locking */
|
||||
|
||||
mutex_init(&rt->lock);
|
||||
|
||||
/* mute card - prevents noisy bootups */
|
||||
|
||||
/* this ensures that the volume is all the way down */
|
||||
outb(0x48, rt->io); /* volume down but still "on" */
|
||||
msleep(2000); /* make sure it's totally down */
|
||||
outb(0xc0, rt->io); /* steady volume, mute card */
|
||||
|
||||
if (video_register_device(&rt->vdev, VFL_TYPE_RADIO, radio_nr) < 0) {
|
||||
v4l2_device_unregister(&rt->v4l2_dev);
|
||||
release_region(rt->io, 2);
|
||||
return -EINVAL;
|
||||
}
|
||||
v4l2_info(v4l2_dev, "AIMSlab RadioTrack/RadioReveal card driver.\n");
|
||||
|
||||
return 0;
|
||||
return isa_register_driver(&rtrack_driver.driver, RTRACK_MAX);
|
||||
}
|
||||
|
||||
static void __exit rtrack_exit(void)
|
||||
{
|
||||
struct rtrack *rt = &rtrack_card;
|
||||
|
||||
video_unregister_device(&rt->vdev);
|
||||
v4l2_device_unregister(&rt->v4l2_dev);
|
||||
release_region(rt->io, 2);
|
||||
isa_unregister_driver(&rtrack_driver.driver);
|
||||
}
|
||||
|
||||
module_init(rtrack_init);
|
||||
module_exit(rtrack_exit);
|
||||
|
||||
|
|
|
|||
Loading…
Reference in a new issue