599 lines
14 KiB
C
599 lines
14 KiB
C
/*
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* $Id: tuner-core.c,v 1.15 2005/06/12 01:36:14 mchehab Exp $
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*
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* i2c tv tuner chip device driver
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* core core, i.e. kernel interfaces, registering and so on
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*/
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <linux/kernel.h>
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#include <linux/sched.h>
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#include <linux/string.h>
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#include <linux/timer.h>
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#include <linux/delay.h>
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#include <linux/errno.h>
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#include <linux/slab.h>
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#include <linux/poll.h>
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#include <linux/i2c.h>
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#include <linux/types.h>
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#include <linux/videodev.h>
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#include <linux/init.h>
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#include <media/tuner.h>
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#include <media/audiochip.h>
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/*
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* comment line bellow to return to old behavor, where only one I2C device is supported
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*/
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#define CONFIG_TUNER_MULTI_I2C /**/
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#define UNSET (-1U)
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/* standard i2c insmod options */
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static unsigned short normal_i2c[] = {
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0x4b, /* tda8290 */
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0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67,
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0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f,
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I2C_CLIENT_END
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};
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I2C_CLIENT_INSMOD;
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/* insmod options used at init time => read/only */
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static unsigned int addr = 0;
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module_param(addr, int, 0444);
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/* insmod options used at runtime => read/write */
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unsigned int tuner_debug = 0;
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module_param(tuner_debug, int, 0644);
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static unsigned int tv_range[2] = { 44, 958 };
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static unsigned int radio_range[2] = { 65, 108 };
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module_param_array(tv_range, int, NULL, 0644);
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module_param_array(radio_range, int, NULL, 0644);
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MODULE_DESCRIPTION("device driver for various TV and TV+FM radio tuners");
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MODULE_AUTHOR("Ralph Metzler, Gerd Knorr, Gunther Mayer");
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MODULE_LICENSE("GPL");
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static int this_adap;
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#ifdef CONFIG_TUNER_MULTI_I2C
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static unsigned short first_tuner, tv_tuner, radio_tuner;
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#endif
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static struct i2c_driver driver;
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static struct i2c_client client_template;
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/* ---------------------------------------------------------------------- */
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/* Set tuner frequency, freq in Units of 62.5kHz = 1/16MHz */
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static void set_tv_freq(struct i2c_client *c, unsigned int freq)
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{
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struct tuner *t = i2c_get_clientdata(c);
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if (t->type == UNSET) {
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tuner_info("tuner type not set\n");
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return;
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}
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if (NULL == t->tv_freq) {
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tuner_info("Huh? tv_set is NULL?\n");
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return;
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}
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if (freq < tv_range[0]*16 || freq > tv_range[1]*16) {
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if (freq >= tv_range[0]*16364 && freq <= tv_range[1]*16384) {
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/* V4L2_TUNER_CAP_LOW frequency */
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tuner_dbg("V4L2_TUNER_CAP_LOW freq selected for TV. Tuners yet doesn't support converting it to valid freq.\n");
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t->tv_freq(c,freq>>10);
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return;
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} else {
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/* FIXME: better do that chip-specific, but
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right now we don't have that in the config
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struct and this way is still better than no
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check at all */
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tuner_info("TV freq (%d.%02d) out of range (%d-%d)\n",
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freq/16,freq%16*100/16,tv_range[0],tv_range[1]);
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return;
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}
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}
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tuner_dbg("62.5 Khz freq step selected for TV.\n");
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t->tv_freq(c,freq);
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}
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static void set_radio_freq(struct i2c_client *c, unsigned int freq)
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{
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struct tuner *t = i2c_get_clientdata(c);
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if (t->type == UNSET) {
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tuner_info("tuner type not set\n");
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return;
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}
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if (NULL == t->radio_freq) {
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tuner_info("no radio tuning for this one, sorry.\n");
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return;
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}
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if (freq < radio_range[0]*16 || freq > radio_range[1]*16) {
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if (freq >= tv_range[0]*16364 && freq <= tv_range[1]*16384) {
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/* V4L2_TUNER_CAP_LOW frequency */
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if (t->type == TUNER_TEA5767) {
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tuner_info("radio freq step 62.5Hz (%d.%06d)\n",(freq>>14),freq%(1<<14)*10000);
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t->radio_freq(c,freq>>10);
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return;
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}
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tuner_dbg("V4L2_TUNER_CAP_LOW freq selected for Radio. Tuners yet doesn't support converting it to valid freq.\n");
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tuner_info("radio freq (%d.%06d)\n",(freq>>14),freq%(1<<14)*10000);
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t->radio_freq(c,freq>>10);
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return;
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} else {
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tuner_info("radio freq (%d.%02d) out of range (%d-%d)\n",
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freq/16,freq%16*100/16,
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radio_range[0],radio_range[1]);
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return;
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}
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}
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tuner_dbg("62.5 Khz freq step selected for Radio.\n");
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t->radio_freq(c,freq);
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}
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static void set_freq(struct i2c_client *c, unsigned long freq)
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{
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struct tuner *t = i2c_get_clientdata(c);
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switch (t->mode) {
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case V4L2_TUNER_RADIO:
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tuner_dbg("radio freq set to %lu.%02lu\n",
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freq/16,freq%16*100/16);
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set_radio_freq(c,freq);
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break;
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case V4L2_TUNER_ANALOG_TV:
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case V4L2_TUNER_DIGITAL_TV:
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tuner_dbg("tv freq set to %lu.%02lu\n",
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freq/16,freq%16*100/16);
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set_tv_freq(c, freq);
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break;
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}
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t->freq = freq;
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}
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static void set_type(struct i2c_client *c, unsigned int type)
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{
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struct tuner *t = i2c_get_clientdata(c);
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tuner_dbg ("I2C addr 0x%02x with type %d\n",c->addr<<1,type);
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/* sanity check */
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if (type == UNSET || type == TUNER_ABSENT)
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return;
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if (type >= tuner_count)
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return;
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if (NULL == t->i2c.dev.driver) {
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/* not registered yet */
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t->type = type;
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return;
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}
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if (t->initialized)
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/* run only once */
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return;
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t->initialized = 1;
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t->type = type;
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switch (t->type) {
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case TUNER_MT2032:
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microtune_init(c);
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break;
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case TUNER_PHILIPS_TDA8290:
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tda8290_init(c);
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break;
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default:
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default_tuner_init(c);
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break;
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}
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}
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#ifdef CONFIG_TUNER_MULTI_I2C
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#define CHECK_ADDR(tp,cmd,tun) if (client->addr!=tp) { \
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return 0; } else \
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tuner_info ("Cmd %s accepted to "tun"\n",cmd);
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#define CHECK_MODE(cmd) if (t->mode == V4L2_TUNER_RADIO) { \
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CHECK_ADDR(radio_tuner,cmd,"radio") } else \
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{ CHECK_ADDR(tv_tuner,cmd,"TV"); }
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#else
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#define CHECK_ADDR(tp,cmd,tun) tuner_info ("Cmd %s accepted to "tun"\n",cmd);
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#define CHECK_MODE(cmd) tuner_info ("Cmd %s accepted\n",cmd);
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#endif
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#ifdef CONFIG_TUNER_MULTI_I2C
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static void set_addr(struct i2c_client *c, struct tuner_addr *tun_addr)
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{
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/* ADDR_UNSET defaults to first available tuner */
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if ( tun_addr->addr == ADDR_UNSET ) {
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if (first_tuner != c->addr)
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return;
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switch (tun_addr->v4l2_tuner) {
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case V4L2_TUNER_RADIO:
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radio_tuner=c->addr;
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break;
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default:
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tv_tuner=c->addr;
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break;
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}
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} else {
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/* Sets tuner to its configured value */
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switch (tun_addr->v4l2_tuner) {
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case V4L2_TUNER_RADIO:
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radio_tuner=tun_addr->addr;
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if ( tun_addr->addr == c->addr ) set_type(c,tun_addr->type);
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return;
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default:
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tv_tuner=tun_addr->addr;
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if ( tun_addr->addr == c->addr ) set_type(c,tun_addr->type);
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return;
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}
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}
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set_type(c,tun_addr->type);
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}
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#else
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#define set_addr(c,tun_addr) set_type(c,(tun_addr)->type)
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#endif
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static char pal[] = "-";
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module_param_string(pal, pal, sizeof(pal), 0644);
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static int tuner_fixup_std(struct tuner *t)
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{
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if ((t->std & V4L2_STD_PAL) == V4L2_STD_PAL) {
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/* get more precise norm info from insmod option */
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switch (pal[0]) {
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case 'b':
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case 'B':
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case 'g':
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case 'G':
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tuner_dbg("insmod fixup: PAL => PAL-BG\n");
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t->std = V4L2_STD_PAL_BG;
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break;
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case 'i':
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case 'I':
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tuner_dbg("insmod fixup: PAL => PAL-I\n");
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t->std = V4L2_STD_PAL_I;
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break;
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case 'd':
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case 'D':
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case 'k':
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case 'K':
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tuner_dbg("insmod fixup: PAL => PAL-DK\n");
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t->std = V4L2_STD_PAL_DK;
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break;
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}
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}
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return 0;
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}
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/* ---------------------------------------------------------------------- */
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static int tuner_attach(struct i2c_adapter *adap, int addr, int kind)
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{
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struct tuner *t;
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#ifndef CONFIG_TUNER_MULTI_I2C
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if (this_adap > 0)
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return -1;
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#else
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/* by default, first I2C card is both tv and radio tuner */
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if (this_adap == 0) {
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first_tuner = addr;
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tv_tuner = addr;
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radio_tuner = addr;
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}
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#endif
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this_adap++;
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client_template.adapter = adap;
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client_template.addr = addr;
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t = kmalloc(sizeof(struct tuner),GFP_KERNEL);
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if (NULL == t)
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return -ENOMEM;
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memset(t,0,sizeof(struct tuner));
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memcpy(&t->i2c,&client_template,sizeof(struct i2c_client));
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i2c_set_clientdata(&t->i2c, t);
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t->type = UNSET;
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t->radio_if2 = 10700*1000; /* 10.7MHz - FM radio */
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i2c_attach_client(&t->i2c);
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tuner_info("chip found @ 0x%x (%s)\n",
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addr << 1, adap->name);
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set_type(&t->i2c, t->type);
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return 0;
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}
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static int tuner_probe(struct i2c_adapter *adap)
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{
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if (0 != addr) {
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normal_i2c[0] = addr;
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normal_i2c[1] = I2C_CLIENT_END;
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}
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this_adap = 0;
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#ifdef CONFIG_TUNER_MULTI_I2C
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first_tuner = 0;
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tv_tuner = 0;
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radio_tuner = 0;
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#endif
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if (adap->class & I2C_CLASS_TV_ANALOG)
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return i2c_probe(adap, &addr_data, tuner_attach);
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return 0;
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}
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static int tuner_detach(struct i2c_client *client)
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{
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struct tuner *t = i2c_get_clientdata(client);
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int err;
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err=i2c_detach_client(&t->i2c);
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if (err) {
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tuner_warn ("Client deregistration failed, client not detached.\n");
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return err;
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}
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kfree(t);
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return 0;
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}
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#define SWITCH_V4L2 if (!t->using_v4l2 && tuner_debug) \
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tuner_info("switching to v4l2\n"); \
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t->using_v4l2 = 1;
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#define CHECK_V4L2 if (t->using_v4l2) { if (tuner_debug) \
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tuner_info("ignore v4l1 call\n"); \
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return 0; }
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static int
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tuner_command(struct i2c_client *client, unsigned int cmd, void *arg)
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{
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struct tuner *t = i2c_get_clientdata(client);
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unsigned int *iarg = (int*)arg;
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switch (cmd) {
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/* --- configuration --- */
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case TUNER_SET_TYPE:
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set_type(client,*iarg);
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break;
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case TUNER_SET_TYPE_ADDR:
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set_addr(client,(struct tuner_addr *)arg);
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break;
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case AUDC_SET_RADIO:
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t->mode = V4L2_TUNER_RADIO;
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CHECK_ADDR(tv_tuner,"AUDC_SET_RADIO","TV");
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if (V4L2_TUNER_RADIO != t->mode) {
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set_tv_freq(client,400 * 16);
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}
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break;
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case AUDC_CONFIG_PINNACLE:
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CHECK_ADDR(tv_tuner,"AUDC_CONFIG_PINNACLE","TV");
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switch (*iarg) {
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case 2:
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tuner_dbg("pinnacle pal\n");
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t->radio_if2 = 33300 * 1000;
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break;
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case 3:
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tuner_dbg("pinnacle ntsc\n");
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t->radio_if2 = 41300 * 1000;
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break;
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}
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break;
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/* --- v4l ioctls --- */
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/* take care: bttv does userspace copying, we'll get a
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kernel pointer here... */
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case VIDIOCSCHAN:
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{
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static const v4l2_std_id map[] = {
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[ VIDEO_MODE_PAL ] = V4L2_STD_PAL,
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[ VIDEO_MODE_NTSC ] = V4L2_STD_NTSC_M,
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[ VIDEO_MODE_SECAM ] = V4L2_STD_SECAM,
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[ 4 /* bttv */ ] = V4L2_STD_PAL_M,
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[ 5 /* bttv */ ] = V4L2_STD_PAL_N,
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[ 6 /* bttv */ ] = V4L2_STD_NTSC_M_JP,
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};
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struct video_channel *vc = arg;
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CHECK_V4L2;
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t->mode = V4L2_TUNER_ANALOG_TV;
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CHECK_ADDR(tv_tuner,"VIDIOCSCHAN","TV");
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if (vc->norm < ARRAY_SIZE(map))
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t->std = map[vc->norm];
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tuner_fixup_std(t);
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if (t->freq)
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set_tv_freq(client,t->freq);
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return 0;
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}
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case VIDIOCSFREQ:
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{
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unsigned long *v = arg;
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CHECK_MODE("VIDIOCSFREQ");
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CHECK_V4L2;
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set_freq(client,*v);
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return 0;
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}
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case VIDIOCGTUNER:
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{
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struct video_tuner *vt = arg;
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CHECK_ADDR(radio_tuner,"VIDIOCGTUNER","radio");
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CHECK_V4L2;
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if (V4L2_TUNER_RADIO == t->mode) {
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if (t->has_signal)
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vt->signal = t->has_signal(client);
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if (t->is_stereo) {
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if (t->is_stereo(client))
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vt-> flags |= VIDEO_TUNER_STEREO_ON;
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else
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vt-> flags &= 0xffff ^ VIDEO_TUNER_STEREO_ON;
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}
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vt->flags |= V4L2_TUNER_CAP_LOW; /* Allow freqs at 62.5 Hz */
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}
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return 0;
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}
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case VIDIOCGAUDIO:
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{
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struct video_audio *va = arg;
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CHECK_ADDR(radio_tuner,"VIDIOCGAUDIO","radio");
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CHECK_V4L2;
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if (V4L2_TUNER_RADIO == t->mode && t->is_stereo)
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va->mode = t->is_stereo(client)
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? VIDEO_SOUND_STEREO
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: VIDEO_SOUND_MONO;
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return 0;
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}
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case VIDIOC_S_STD:
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{
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v4l2_std_id *id = arg;
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SWITCH_V4L2;
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t->mode = V4L2_TUNER_ANALOG_TV;
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CHECK_ADDR(tv_tuner,"VIDIOC_S_STD","TV");
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t->std = *id;
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tuner_fixup_std(t);
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if (t->freq)
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set_freq(client,t->freq);
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break;
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}
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case VIDIOC_S_FREQUENCY:
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{
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struct v4l2_frequency *f = arg;
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CHECK_MODE("VIDIOC_S_FREQUENCY");
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SWITCH_V4L2;
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if (V4L2_TUNER_RADIO == f->type &&
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V4L2_TUNER_RADIO != t->mode)
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set_tv_freq(client,400*16);
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t->mode = f->type;
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set_freq(client,f->frequency);
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break;
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}
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case VIDIOC_G_FREQUENCY:
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{
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struct v4l2_frequency *f = arg;
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|
|
CHECK_MODE("VIDIOC_G_FREQUENCY");
|
|
SWITCH_V4L2;
|
|
f->type = t->mode;
|
|
f->frequency = t->freq;
|
|
break;
|
|
}
|
|
case VIDIOC_G_TUNER:
|
|
{
|
|
struct v4l2_tuner *tuner = arg;
|
|
|
|
CHECK_MODE("VIDIOC_G_TUNER");
|
|
SWITCH_V4L2;
|
|
if (V4L2_TUNER_RADIO == t->mode) {
|
|
if (t->has_signal)
|
|
tuner -> signal = t->has_signal(client);
|
|
if (t->is_stereo) {
|
|
if (t->is_stereo(client)) {
|
|
tuner -> capability |= V4L2_TUNER_CAP_STEREO;
|
|
tuner -> rxsubchans |= V4L2_TUNER_SUB_STEREO;
|
|
} else {
|
|
tuner -> rxsubchans &= 0xffff ^ V4L2_TUNER_SUB_STEREO;
|
|
}
|
|
}
|
|
}
|
|
/* Wow to deal with V4L2_TUNER_CAP_LOW ? For now, it accepts from low at 62.5KHz step to high at 62.5 Hz */
|
|
tuner->rangelow = tv_range[0] * 16;
|
|
// tuner->rangehigh = tv_range[1] * 16;
|
|
// tuner->rangelow = tv_range[0] * 16384;
|
|
tuner->rangehigh = tv_range[1] * 16384;
|
|
break;
|
|
}
|
|
default:
|
|
tuner_dbg ("Unimplemented IOCTL 0x%08x called to tuner.\n", cmd);
|
|
/* nothing */
|
|
break;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int tuner_suspend(struct device * dev, u32 state, u32 level)
|
|
{
|
|
struct i2c_client *c = container_of(dev, struct i2c_client, dev);
|
|
struct tuner *t = i2c_get_clientdata(c);
|
|
|
|
tuner_dbg("suspend\n");
|
|
/* FIXME: power down ??? */
|
|
return 0;
|
|
}
|
|
|
|
static int tuner_resume(struct device * dev, u32 level)
|
|
{
|
|
struct i2c_client *c = container_of(dev, struct i2c_client, dev);
|
|
struct tuner *t = i2c_get_clientdata(c);
|
|
|
|
tuner_dbg("resume\n");
|
|
if (t->freq)
|
|
set_freq(c,t->freq);
|
|
return 0;
|
|
}
|
|
|
|
/* ----------------------------------------------------------------------- */
|
|
|
|
static struct i2c_driver driver = {
|
|
.owner = THIS_MODULE,
|
|
.name = "tuner",
|
|
.id = I2C_DRIVERID_TUNER,
|
|
.flags = I2C_DF_NOTIFY,
|
|
.attach_adapter = tuner_probe,
|
|
.detach_client = tuner_detach,
|
|
.command = tuner_command,
|
|
.driver = {
|
|
.suspend = tuner_suspend,
|
|
.resume = tuner_resume,
|
|
},
|
|
};
|
|
static struct i2c_client client_template =
|
|
{
|
|
I2C_DEVNAME("(tuner unset)"),
|
|
.flags = I2C_CLIENT_ALLOW_USE,
|
|
.driver = &driver,
|
|
};
|
|
|
|
static int __init tuner_init_module(void)
|
|
{
|
|
return i2c_add_driver(&driver);
|
|
}
|
|
|
|
static void __exit tuner_cleanup_module(void)
|
|
{
|
|
i2c_del_driver(&driver);
|
|
}
|
|
|
|
module_init(tuner_init_module);
|
|
module_exit(tuner_cleanup_module);
|
|
|
|
/*
|
|
* Overrides for Emacs so that we follow Linus's tabbing style.
|
|
* ---------------------------------------------------------------------------
|
|
* Local variables:
|
|
* c-basic-offset: 8
|
|
* End:
|
|
*/
|