V4L/DVB (6244): [PATCH 1/2] GemTek Radio card
Code cleanup for GemTek Radio card driver. Removed unnecessary / invalid I/O commands and rewrote code for tuning on-board BU2614FS chip. Adds several new module params for power users. Includes automatic device probing. Signed-off-by: Pekka Seppanen <pexu@kapsi.fi> Signed-off-by: Douglas Schilling Landgraf <dougsland@gmail.com> Reviewed-by: Trent Piepho <xyzzy@speakeasy.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>hifive-unleashed-5.1
Pekka Seppanen
Mauro Carvalho Chehab
parent
3e7589c507
commit
4753647e64
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@ -26,143 +26,413 @@
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#include <media/v4l2-common.h>
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#include <linux/spinlock.h>
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#include <linux/version.h> /* for KERNEL_VERSION MACRO */
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#define RADIO_VERSION KERNEL_VERSION(0,0,2)
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#include <linux/version.h> /* for KERNEL_VERSION MACRO */
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#define RADIO_VERSION KERNEL_VERSION(0,0,3)
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#define RADIO_BANNER "GemTek Radio card driver: v0.0.3"
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static struct v4l2_queryctrl radio_qctrl[] = {
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{
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.id = V4L2_CID_AUDIO_MUTE,
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.name = "Mute",
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.minimum = 0,
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.maximum = 1,
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.default_value = 1,
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.type = V4L2_CTRL_TYPE_BOOLEAN,
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},{
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.id = V4L2_CID_AUDIO_VOLUME,
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.name = "Volume",
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.minimum = 0,
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.maximum = 65535,
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.step = 65535,
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.default_value = 0xff,
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.type = V4L2_CTRL_TYPE_INTEGER,
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}
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};
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/*
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* Module info.
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*/
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MODULE_AUTHOR("Jonas Munsin, Pekka Seppänen <pexu@kapsi.fi>");
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MODULE_DESCRIPTION("A driver for the GemTek Radio card.");
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MODULE_LICENSE("GPL");
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/*
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* Module params.
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*/
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#ifndef CONFIG_RADIO_GEMTEK_PORT
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#define CONFIG_RADIO_GEMTEK_PORT -1
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#endif
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#ifndef CONFIG_RADIO_GEMTEK_PROBE
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#define CONFIG_RADIO_GEMTEK_PROBE 1
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#endif
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static int io = CONFIG_RADIO_GEMTEK_PORT;
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static int radio_nr = -1;
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static spinlock_t lock;
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static int io = CONFIG_RADIO_GEMTEK_PORT;
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static int probe = CONFIG_RADIO_GEMTEK_PROBE;
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static int hardmute;
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static int shutdown = 1;
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static int keepmuted = 1;
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static int initmute = 1;
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static int radio_nr = -1;
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struct gemtek_device
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{
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int port;
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unsigned long curfreq;
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module_param(io, int, 0444);
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MODULE_PARM_DESC(io, "Force I/O port for the GemTek Radio card if automatic"
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"probing is disabled or fails. The most common I/O ports are: 0x20c "
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"0x30c, 0x24c or 0x34c (0x20c, 0x248 and 0x28c have been reported to "
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" work for the combined sound/radiocard).");
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module_param(probe, bool, 0444);
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MODULE_PARM_DESC(probe, "Enable automatic device probing. Note: only the most "
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"common I/O ports used by the card are probed.");
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module_param(hardmute, bool, 0644);
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MODULE_PARM_DESC(hardmute, "Enable `hard muting' by shutting down PLL, may "
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"reduce static noise.");
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module_param(shutdown, bool, 0644);
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MODULE_PARM_DESC(shutdown, "Enable shutting down PLL and muting line when "
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"module is unloaded.");
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module_param(keepmuted, bool, 0644);
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MODULE_PARM_DESC(keepmuted, "Keep card muted even when frequency is changed.");
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module_param(initmute, bool, 0444);
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MODULE_PARM_DESC(initmute, "Mute card when module is loaded.");
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module_param(radio_nr, int, 0444);
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/*
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* Functions for controlling the card.
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*/
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#define GEMTEK_LOWFREQ (87*16000)
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#define GEMTEK_HIGHFREQ (108*16000)
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#define GEMTEK_CK 0x01 /* Clock signal */
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#define GEMTEK_DA 0x02 /* Serial data */
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#define GEMTEK_CE 0x04 /* Chip enable */
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#define GEMTEK_NS 0x08 /* No signal */
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#define GEMTEK_MT 0x10 /* Line mute */
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#define GEMTEK_STDF_3_125_KHZ 0x01 /* Standard frequency 3.125 kHz */
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#define GEMTEK_PLL_OFF 0x07 /* PLL off */
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#define BU2614_BUS_SIZE 32 /* BU2614 / BU2614FS bus size */
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#define BU2614_NOPS 8 /* Number of supported operations */
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#define SHORT_DELAY 5 /* usec */
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#define LONG_DELAY 75 /* usec */
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struct gemtek_device {
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unsigned long lastfreq;
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int muted;
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unsigned long bu2614data[BU2614_NOPS];
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};
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enum {
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BU2614_VOID,
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BU2614_FREQ, /* D0..D15, Frequency data */
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BU2614_PORT, /* P0..P2, Output port control data */
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BU2614_FMES, /* CT, Frequency measurement beginning data */
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BU2614_STDF, /* R0..R2, Standard frequency data */
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BU2614_SWIN, /* S, Switch between FMIN / AMIN */
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BU2614_SWAL, /* PS, Swallow counter division (AMIN only) */
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BU2614_FMUN, /* GT, Frequency measurement time and unlock */
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BU2614_TEST /* TS, Test data is input */
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};
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/* local things */
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struct bu2614_op {
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int op; /* Operation */
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int size; /* Data size */
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};
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/* the correct way to mute the gemtek may be to write the last written
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* frequency || 0x10, but just writing 0x10 once seems to do it as well
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static struct gemtek_device gemtek_unit;
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static struct bu2614_op bu2614ops[] = {
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{.op = BU2614_FREQ,
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.size = 0x10},
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{.op = BU2614_PORT,
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.size = 0x03},
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{.op = BU2614_VOID,
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.size = 0x04},
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{.op = BU2614_FMES,
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.size = 0x01},
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{.op = BU2614_STDF,
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.size = 0x03},
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{.op = BU2614_SWIN,
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.size = 0x01},
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{.op = BU2614_SWAL,
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.size = 0x01},
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{.op = BU2614_VOID,
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.size = 0x01},
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{.op = BU2614_FMUN,
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.size = 0x01},
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{.op = BU2614_TEST,
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.size = 0x01}
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};
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static spinlock_t lock;
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/*
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* Set data which will be sent to BU2614FS.
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*/
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static void gemtek_bu2614_set(struct gemtek_device *dev, int op,
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unsigned long data)
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{
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int i, q;
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for (i = 0, q = 0; q < ARRAY_SIZE(dev->bu2614data); ++i) {
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if (bu2614ops[i].op == op) {
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dev->bu2614data[q] =
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data & ((1 << bu2614ops[i].size) - 1);
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return;
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}
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if (bu2614ops[i].op != BU2614_VOID)
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++q;
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}
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}
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/*
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* Transmit settings to BU2614FS over GemTek IC.
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*/
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static void gemtek_bu2614_transmit(struct gemtek_device *dev)
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{
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int i, bit, q, mute;
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spin_lock(&lock);
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mute = dev->muted ? GEMTEK_MT : 0x00;
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outb_p(mute | GEMTEK_DA | GEMTEK_CK, io);
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udelay(SHORT_DELAY);
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outb_p(mute | GEMTEK_CE | GEMTEK_DA | GEMTEK_CK, io);
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udelay(LONG_DELAY);
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for (i = 0, q = 0; q < ARRAY_SIZE(dev->bu2614data); ++i) {
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for (bit = 0; bit < bu2614ops[i].size; ++bit) {
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if (bu2614ops[i].op != BU2614_VOID &&
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dev->bu2614data[q] & (1 << bit)) {
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outb_p(mute | GEMTEK_CE | GEMTEK_DA, io);
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udelay(SHORT_DELAY);
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outb_p(mute | GEMTEK_CE | GEMTEK_DA |
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GEMTEK_CK, io);
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udelay(SHORT_DELAY);
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} else {
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outb_p(mute | GEMTEK_CE, io);
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udelay(SHORT_DELAY);
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outb_p(mute | GEMTEK_CE | GEMTEK_CK, io);
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udelay(SHORT_DELAY);
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}
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}
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if (bu2614ops[i].op != BU2614_VOID)
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++q;
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}
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outb_p(mute | GEMTEK_DA | GEMTEK_CK, io);
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udelay(SHORT_DELAY);
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outb_p(mute | GEMTEK_CE | GEMTEK_DA | GEMTEK_CK, io);
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udelay(LONG_DELAY);
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spin_unlock(&lock);
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}
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/*
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* Convert FM-frequency for BU2614FS (3.125 KHz STDF expected).
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*/
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static inline void gemtek_convfreq(unsigned long *freq)
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{
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(*freq) /= 160;
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(*freq) += 1052; /* FMIN, 10.52 MHz */
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(*freq) *= 1565; /* STDF, 1 / 156.5 = 0.00639 */
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(*freq) /= 1000;
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}
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/*
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* Set FM-frequency.
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*/
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static void gemtek_setfreq(struct gemtek_device *dev, unsigned long freq)
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{
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if (keepmuted && hardmute && dev->muted)
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return;
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if (freq < GEMTEK_LOWFREQ)
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freq = GEMTEK_LOWFREQ;
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else if (freq > GEMTEK_HIGHFREQ)
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freq = GEMTEK_HIGHFREQ;
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dev->lastfreq = freq;
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dev->muted = 0;
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gemtek_bu2614_set(dev, BU2614_PORT, 0);
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gemtek_bu2614_set(dev, BU2614_FMES, 0);
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gemtek_bu2614_set(dev, BU2614_SWIN, 0); /* FM-mode */
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gemtek_bu2614_set(dev, BU2614_SWAL, 0);
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gemtek_bu2614_set(dev, BU2614_FMUN, 1); /* GT bit set */
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gemtek_bu2614_set(dev, BU2614_TEST, 0);
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gemtek_convfreq(&freq);
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gemtek_bu2614_set(dev, BU2614_STDF, GEMTEK_STDF_3_125_KHZ);
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gemtek_bu2614_set(dev, BU2614_FREQ, freq);
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gemtek_bu2614_transmit(dev);
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}
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/*
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* Set mute flag.
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*/
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static void gemtek_mute(struct gemtek_device *dev)
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{
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if(dev->muted)
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return;
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spin_lock(&lock);
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outb(0x10, io);
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spin_unlock(&lock);
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int i;
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dev->muted = 1;
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if (hardmute) {
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/* Turn off PLL, disable data output */
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gemtek_bu2614_set(dev, BU2614_PORT, 0);
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gemtek_bu2614_set(dev, BU2614_FMES, 0); /* CT bit off */
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gemtek_bu2614_set(dev, BU2614_SWIN, 0); /* FM-mode */
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gemtek_bu2614_set(dev, BU2614_SWAL, 0);
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gemtek_bu2614_set(dev, BU2614_FMUN, 0); /* GT bit off */
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gemtek_bu2614_set(dev, BU2614_TEST, 0);
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gemtek_bu2614_set(dev, BU2614_STDF, GEMTEK_PLL_OFF);
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gemtek_bu2614_set(dev, BU2614_FREQ, 0);
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gemtek_bu2614_transmit(dev);
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} else {
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spin_lock(&lock);
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/* Read bus contents (CE, CK and DA). */
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i = inb_p(io);
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/* Write it back with mute flag set. */
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outb_p((i >> 5) | GEMTEK_MT, io);
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udelay(SHORT_DELAY);
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spin_unlock(&lock);
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}
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}
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/*
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* Unset mute flag.
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*/
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static void gemtek_unmute(struct gemtek_device *dev)
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{
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if(dev->muted == 0)
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return;
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spin_lock(&lock);
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outb(0x20, io);
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spin_unlock(&lock);
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int i;
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dev->muted = 0;
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if (hardmute) {
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/* Turn PLL back on. */
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gemtek_setfreq(dev, dev->lastfreq);
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} else {
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spin_lock(&lock);
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i = inb_p(io);
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outb_p(i >> 5, io);
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udelay(SHORT_DELAY);
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spin_unlock(&lock);
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}
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}
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static void zero(void)
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/*
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* Get signal strength (= stereo status).
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*/
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static inline int gemtek_getsigstr(void)
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{
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outb_p(0x04, io);
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udelay(5);
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outb_p(0x05, io);
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udelay(5);
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return inb_p(io) & GEMTEK_NS ? 0 : 1;
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}
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static void one(void)
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/*
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* Check if requested card acts like GemTek Radio card.
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*/
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static int gemtek_verify(int port)
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{
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outb_p(0x06, io);
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udelay(5);
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outb_p(0x07, io);
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udelay(5);
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static int verified = -1;
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int i, q;
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if (verified == port)
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return 1;
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spin_lock(&lock);
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q = inb_p(port); /* Read bus contents before probing. */
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/* Try to turn on CE, CK and DA respectively and check if card responds
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properly. */
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for (i = 0; i < 3; ++i) {
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outb_p(1 << i, port);
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udelay(SHORT_DELAY);
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if ((inb_p(port) & (~GEMTEK_NS)) != (0x17 | (1 << (i + 5)))) {
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spin_unlock(&lock);
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return 0;
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}
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}
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outb_p(q >> 5, port); /* Write bus contents back. */
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udelay(SHORT_DELAY);
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spin_unlock(&lock);
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verified = port;
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return 1;
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}
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static int gemtek_setfreq(struct gemtek_device *dev, unsigned long freq)
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/*
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* Automatic probing for card.
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*/
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static int gemtek_probe(void)
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{
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int ioports[] = { 0x20c, 0x30c, 0x24c, 0x34c, 0x248, 0x28c };
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int i;
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/* freq = 78.25*((float)freq/16000.0 + 10.52); */
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if (!probe) {
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printk(KERN_INFO "Automatic device probing disabled.\n");
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return -1;
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}
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freq /= 16;
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freq += 10520;
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freq *= 7825;
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freq /= 100000;
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printk(KERN_INFO "Automatic device probing enabled.\n");
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spin_lock(&lock);
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for (i = 0; i < ARRAY_SIZE(ioports); ++i) {
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printk(KERN_INFO "Trying I/O port 0x%x...\n", ioports[i]);
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/* 2 start bits */
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outb_p(0x03, io);
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udelay(5);
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outb_p(0x07, io);
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udelay(5);
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if (!request_region(ioports[i], 1, "gemtek-probe")) {
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printk(KERN_WARNING "I/O port 0x%x busy!\n",
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ioports[i]);
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continue;
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}
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/* 28 frequency bits (lsb first) */
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for (i = 0; i < 14; i++)
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if (freq & (1 << i))
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one();
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else
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zero();
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/* 36 unknown bits */
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for (i = 0; i < 11; i++)
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zero();
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one();
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for (i = 0; i < 4; i++)
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zero();
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one();
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zero();
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if (gemtek_verify(ioports[i])) {
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printk(KERN_INFO "Card found from I/O port "
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"0x%x!\n", ioports[i]);
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/* 2 end bits */
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outb_p(0x03, io);
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udelay(5);
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outb_p(0x07, io);
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udelay(5);
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release_region(ioports[i], 1);
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spin_unlock(&lock);
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io = ioports[i];
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return io;
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}
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return 0;
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release_region(ioports[i], 1);
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}
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printk(KERN_ERR "Automatic probing failed!\n");
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return -1;
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}
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static int gemtek_getsigstr(struct gemtek_device *dev)
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{
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spin_lock(&lock);
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inb(io);
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udelay(5);
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spin_unlock(&lock);
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if (inb(io) & 8) /* bit set = no signal present */
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return 0;
|
||||
return 1; /* signal present */
|
||||
}
|
||||
/*
|
||||
* Video 4 Linux stuff.
|
||||
*/
|
||||
|
||||
static int vidioc_querycap(struct file *file, void *priv,
|
||||
struct v4l2_capability *v)
|
||||
static struct v4l2_queryctrl radio_qctrl[] = {
|
||||
{
|
||||
.id = V4L2_CID_AUDIO_MUTE,
|
||||
.name = "Mute",
|
||||
.minimum = 0,
|
||||
.maximum = 1,
|
||||
.default_value = 1,
|
||||
.type = V4L2_CTRL_TYPE_BOOLEAN,
|
||||
}, {
|
||||
.id = V4L2_CID_AUDIO_VOLUME,
|
||||
.name = "Volume",
|
||||
.minimum = 0,
|
||||
.maximum = 65535,
|
||||
.step = 65535,
|
||||
.default_value = 0xff,
|
||||
.type = V4L2_CTRL_TYPE_INTEGER,
|
||||
}
|
||||
};
|
||||
|
||||
static struct file_operations gemtek_fops = {
|
||||
.owner = THIS_MODULE,
|
||||
.open = video_exclusive_open,
|
||||
.release = video_exclusive_release,
|
||||
.ioctl = video_ioctl2,
|
||||
.compat_ioctl = v4l_compat_ioctl32,
|
||||
.llseek = no_llseek
|
||||
};
|
||||
|
||||
static int vidioc_querycap(struct file *file, void *priv,
|
||||
struct v4l2_capability *v)
|
||||
{
|
||||
strlcpy(v->driver, "radio-gemtek", sizeof(v->driver));
|
||||
strlcpy(v->card, "GemTek", sizeof(v->card));
|
||||
|
|
@ -172,28 +442,29 @@ static int vidioc_querycap(struct file *file, void *priv,
|
|||
return 0;
|
||||
}
|
||||
|
||||
static int vidioc_g_tuner(struct file *file, void *priv,
|
||||
struct v4l2_tuner *v)
|
||||
static int vidioc_g_tuner(struct file *file, void *priv, struct v4l2_tuner *v)
|
||||
{
|
||||
struct video_device *dev = video_devdata(file);
|
||||
struct gemtek_device *rt = dev->priv;
|
||||
|
||||
if (v->index > 0)
|
||||
return -EINVAL;
|
||||
|
||||
strcpy(v->name, "FM");
|
||||
v->type = V4L2_TUNER_RADIO;
|
||||
v->rangelow = (87*16000);
|
||||
v->rangehigh = (108*16000);
|
||||
v->rxsubchans = V4L2_TUNER_SUB_MONO;
|
||||
v->capability = V4L2_TUNER_CAP_LOW;
|
||||
v->audmode = V4L2_TUNER_MODE_MONO;
|
||||
v->signal = 0xffff*gemtek_getsigstr(rt);
|
||||
v->rangelow = GEMTEK_LOWFREQ;
|
||||
v->rangehigh = GEMTEK_HIGHFREQ;
|
||||
v->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO;
|
||||
v->signal = 0xffff * gemtek_getsigstr();
|
||||
if (v->signal) {
|
||||
v->audmode = V4L2_TUNER_MODE_STEREO;
|
||||
v->rxsubchans = V4L2_TUNER_SUB_STEREO;
|
||||
} else {
|
||||
v->audmode = V4L2_TUNER_MODE_MONO;
|
||||
v->rxsubchans = V4L2_TUNER_SUB_MONO;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int vidioc_s_tuner(struct file *file, void *priv,
|
||||
struct v4l2_tuner *v)
|
||||
static int vidioc_s_tuner(struct file *file, void *priv, struct v4l2_tuner *v)
|
||||
{
|
||||
if (v->index > 0)
|
||||
return -EINVAL;
|
||||
|
|
@ -201,38 +472,35 @@ static int vidioc_s_tuner(struct file *file, void *priv,
|
|||
}
|
||||
|
||||
static int vidioc_s_frequency(struct file *file, void *priv,
|
||||
struct v4l2_frequency *f)
|
||||
struct v4l2_frequency *f)
|
||||
{
|
||||
struct video_device *dev = video_devdata(file);
|
||||
struct gemtek_device *rt = dev->priv;
|
||||
|
||||
rt->curfreq = f->frequency;
|
||||
/* needs to be called twice in order for getsigstr to work */
|
||||
gemtek_setfreq(rt, rt->curfreq);
|
||||
gemtek_setfreq(rt, rt->curfreq);
|
||||
gemtek_setfreq(rt, f->frequency);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int vidioc_g_frequency(struct file *file, void *priv,
|
||||
struct v4l2_frequency *f)
|
||||
struct v4l2_frequency *f)
|
||||
{
|
||||
struct video_device *dev = video_devdata(file);
|
||||
struct gemtek_device *rt = dev->priv;
|
||||
|
||||
f->type = V4L2_TUNER_RADIO;
|
||||
f->frequency = rt->curfreq;
|
||||
f->frequency = rt->lastfreq;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int vidioc_queryctrl(struct file *file, void *priv,
|
||||
struct v4l2_queryctrl *qc)
|
||||
struct v4l2_queryctrl *qc)
|
||||
{
|
||||
int i;
|
||||
|
||||
for (i = 0; i < ARRAY_SIZE(radio_qctrl); i++) {
|
||||
for (i = 0; i < ARRAY_SIZE(radio_qctrl); ++i) {
|
||||
if (qc->id && qc->id == radio_qctrl[i].id) {
|
||||
memcpy(qc, &(radio_qctrl[i]),
|
||||
sizeof(*qc));
|
||||
memcpy(qc, &(radio_qctrl[i]), sizeof(*qc));
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
|
|
@ -240,7 +508,7 @@ static int vidioc_queryctrl(struct file *file, void *priv,
|
|||
}
|
||||
|
||||
static int vidioc_g_ctrl(struct file *file, void *priv,
|
||||
struct v4l2_control *ctrl)
|
||||
struct v4l2_control *ctrl)
|
||||
{
|
||||
struct video_device *dev = video_devdata(file);
|
||||
struct gemtek_device *rt = dev->priv;
|
||||
|
|
@ -260,7 +528,7 @@ static int vidioc_g_ctrl(struct file *file, void *priv,
|
|||
}
|
||||
|
||||
static int vidioc_s_ctrl(struct file *file, void *priv,
|
||||
struct v4l2_control *ctrl)
|
||||
struct v4l2_control *ctrl)
|
||||
{
|
||||
struct video_device *dev = video_devdata(file);
|
||||
struct gemtek_device *rt = dev->priv;
|
||||
|
|
@ -282,8 +550,7 @@ static int vidioc_s_ctrl(struct file *file, void *priv,
|
|||
return -EINVAL;
|
||||
}
|
||||
|
||||
static int vidioc_g_audio (struct file *file, void *priv,
|
||||
struct v4l2_audio *a)
|
||||
static int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *a)
|
||||
{
|
||||
if (a->index > 1)
|
||||
return -EINVAL;
|
||||
|
|
@ -306,99 +573,105 @@ static int vidioc_s_input(struct file *filp, void *priv, unsigned int i)
|
|||
return 0;
|
||||
}
|
||||
|
||||
static int vidioc_s_audio(struct file *file, void *priv,
|
||||
struct v4l2_audio *a)
|
||||
static int vidioc_s_audio(struct file *file, void *priv, struct v4l2_audio *a)
|
||||
{
|
||||
if (a->index != 0)
|
||||
return -EINVAL;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct gemtek_device gemtek_unit;
|
||||
|
||||
static const struct file_operations gemtek_fops = {
|
||||
.owner = THIS_MODULE,
|
||||
.open = video_exclusive_open,
|
||||
.release = video_exclusive_release,
|
||||
.ioctl = video_ioctl2,
|
||||
.compat_ioctl = v4l_compat_ioctl32,
|
||||
.llseek = no_llseek,
|
||||
static struct video_device gemtek_radio = {
|
||||
.owner = THIS_MODULE,
|
||||
.name = "GemTek Radio card",
|
||||
.type = VID_TYPE_TUNER,
|
||||
.hardware = VID_HARDWARE_GEMTEK,
|
||||
.fops = &gemtek_fops,
|
||||
.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 struct video_device gemtek_radio=
|
||||
{
|
||||
.owner = THIS_MODULE,
|
||||
.name = "GemTek radio",
|
||||
.type = VID_TYPE_TUNER,
|
||||
.fops = &gemtek_fops,
|
||||
.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,
|
||||
};
|
||||
/*
|
||||
* Initialization / cleanup related stuff.
|
||||
*/
|
||||
|
||||
/*
|
||||
* Initilize card.
|
||||
*/
|
||||
static int __init gemtek_init(void)
|
||||
{
|
||||
if(io==-1)
|
||||
{
|
||||
printk(KERN_ERR "You must set an I/O address with io=0x20c, io=0x30c, io=0x24c or io=0x34c (io=0x020c or io=0x248 for the combined sound/radiocard)\n");
|
||||
return -EINVAL;
|
||||
}
|
||||
int i;
|
||||
|
||||
if (!request_region(io, 4, "gemtek"))
|
||||
{
|
||||
printk(KERN_ERR "gemtek: port 0x%x already in use\n", io);
|
||||
return -EBUSY;
|
||||
}
|
||||
|
||||
gemtek_radio.priv=&gemtek_unit;
|
||||
|
||||
if(video_register_device(&gemtek_radio, VFL_TYPE_RADIO, radio_nr)==-1)
|
||||
{
|
||||
release_region(io, 4);
|
||||
return -EINVAL;
|
||||
}
|
||||
printk(KERN_INFO "GemTek Radio Card driver.\n");
|
||||
printk(KERN_INFO RADIO_BANNER "\n");
|
||||
|
||||
spin_lock_init(&lock);
|
||||
|
||||
/* this is _maybe_ unnecessary */
|
||||
outb(0x01, io);
|
||||
gemtek_probe();
|
||||
if (io) {
|
||||
if (!request_region(io, 1, "gemtek")) {
|
||||
printk(KERN_ERR "I/O port 0x%x already in use.\n", io);
|
||||
return -EBUSY;
|
||||
}
|
||||
|
||||
/* mute card - prevents noisy bootups */
|
||||
gemtek_unit.muted = 0;
|
||||
gemtek_mute(&gemtek_unit);
|
||||
if (!gemtek_verify(io))
|
||||
printk(KERN_WARNING "Card at I/O port 0x%x does not "
|
||||
"respond properly, check your "
|
||||
"configuration.\n", io);
|
||||
else
|
||||
printk(KERN_INFO "Using I/O port 0x%x.\n", io);
|
||||
} else if (probe) {
|
||||
printk(KERN_ERR "Automatic probing failed and no "
|
||||
"fixed I/O port defined.\n");
|
||||
return -ENODEV;
|
||||
} else {
|
||||
printk(KERN_ERR "Automatic probing disabled but no fixed "
|
||||
"I/O port defined.");
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
gemtek_radio.priv = &gemtek_unit;
|
||||
|
||||
if (video_register_device(&gemtek_radio, VFL_TYPE_RADIO,
|
||||
radio_nr) == -1) {
|
||||
release_region(io, 1);
|
||||
return -EBUSY;
|
||||
}
|
||||
|
||||
/* Set defaults */
|
||||
gemtek_unit.lastfreq = GEMTEK_LOWFREQ;
|
||||
for (i = 0; i < ARRAY_SIZE(gemtek_unit.bu2614data); ++i)
|
||||
gemtek_unit.bu2614data[i] = 0;
|
||||
|
||||
if (initmute)
|
||||
gemtek_mute(&gemtek_unit);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
MODULE_AUTHOR("Jonas Munsin");
|
||||
MODULE_DESCRIPTION("A driver for the GemTek Radio Card");
|
||||
MODULE_LICENSE("GPL");
|
||||
|
||||
module_param(io, int, 0);
|
||||
MODULE_PARM_DESC(io, "I/O address of the GemTek card (0x20c, 0x30c, 0x24c or 0x34c (0x20c or 0x248 have been reported to work for the combined sound/radiocard)).");
|
||||
module_param(radio_nr, int, 0);
|
||||
|
||||
static void __exit gemtek_cleanup(void)
|
||||
/*
|
||||
* Module cleanup
|
||||
*/
|
||||
static void __exit gemtek_exit(void)
|
||||
{
|
||||
if (shutdown) {
|
||||
hardmute = 1; /* Turn off PLL */
|
||||
gemtek_mute(&gemtek_unit);
|
||||
} else {
|
||||
printk(KERN_INFO "Module unloaded but card not muted!\n");
|
||||
}
|
||||
|
||||
video_unregister_device(&gemtek_radio);
|
||||
release_region(io,4);
|
||||
release_region(io, 1);
|
||||
}
|
||||
|
||||
module_init(gemtek_init);
|
||||
module_exit(gemtek_cleanup);
|
||||
|
||||
/*
|
||||
Local variables:
|
||||
compile-command: "gcc -c -DMODVERSIONS -D__KERNEL__ -DMODULE -O6 -Wall -Wstrict-prototypes -I /home/blp/tmp/linux-2.1.111-rtrack/include radio-rtrack2.c"
|
||||
End:
|
||||
*/
|
||||
module_exit(gemtek_exit);
|
||||
|
|
|
|||
Loading…
Reference in New Issue