ixj.c

来自「linux 内核源代码」· C语言 代码 · 共 2,169 行 · 第 1/5 页

}

static int ixj_sidac(IXJ *j, int val)
{
	if(j->cardtype == QTI_PHONECARD){
		if(j->flags.pcmciascp){
			if(val == -1)
				return j->sidac.bits.txg;

			if(val < 0 || val > 0x1F)
				return -1;

			j->sidac.bits.srm = 1;				/* Speaker Right Mute */
			j->sidac.bits.slm = 1;				/* Speaker Left Mute */
			j->sidac.bits.txg = val;			/* (0xC000 - 0x45E4) / 0x5D3;	 TX PGA Gain */
			j->psccr.bits.addr = 7;				/* R/W Smart Cable Register Address */
			j->psccr.bits.rw = 0;				/* Read / Write flag */
			j->psccr.bits.dev = 0;
			outb(j->sidac.byte, j->XILINXbase + 0x00);
			outb(j->psccr.byte, j->XILINXbase + 0x01);
			ixj_PCcontrol_wait(j);
			return j->sidac.bits.txg;
		}
	}
	return -1;
}

static int ixj_pcmcia_cable_check(IXJ *j)
{
	j->pccr1.byte = inb_p(j->XILINXbase + 0x03);
	if (!j->flags.pcmciastate) {
		j->pccr2.byte = inb_p(j->XILINXbase + 0x02);
		if (j->pccr1.bits.drf || j->pccr2.bits.rstc) {
			j->flags.pcmciastate = 4;
			return 0;
		}
		if (j->pccr1.bits.ed) {
			j->pccr1.bits.ed = 0;
			j->psccr.bits.dev = 3;
			j->psccr.bits.rw = 1;
			outw_p(j->psccr.byte << 8, j->XILINXbase + 0x00);
			ixj_PCcontrol_wait(j);
			j->pslic.byte = inw_p(j->XILINXbase + 0x00) & 0xFF;
			j->pslic.bits.led2 = j->pslic.bits.det ? 1 : 0;
			j->psccr.bits.dev = 3;
			j->psccr.bits.rw = 0;
			outw_p(j->psccr.byte << 8 | j->pslic.byte, j->XILINXbase + 0x00);
			ixj_PCcontrol_wait(j);
			return j->pslic.bits.led2 ? 1 : 0;
		} else if (j->flags.pcmciasct) {
			return j->r_hook;
		} else {
			return 1;
		}
	} else if (j->flags.pcmciastate == 4) {
		if (!j->pccr1.bits.drf) {
			j->flags.pcmciastate = 3;
		}
		return 0;
	} else if (j->flags.pcmciastate == 3) {
		j->pccr2.bits.pwr = 0;
		j->pccr2.bits.rstc = 1;
		outb(j->pccr2.byte, j->XILINXbase + 0x02);
		j->checkwait = jiffies + (hertz * 2);
		j->flags.incheck = 1;
		j->flags.pcmciastate = 2;
		return 0;
	} else if (j->flags.pcmciastate == 2) {
		if (j->flags.incheck) {
			if (time_before(jiffies, j->checkwait)) {
				return 0;
			} else {
				j->flags.incheck = 0;
			}
		}
		j->pccr2.bits.pwr = 0;
		j->pccr2.bits.rstc = 0;
		outb_p(j->pccr2.byte, j->XILINXbase + 0x02);
		j->flags.pcmciastate = 1;
		return 0;
	} else if (j->flags.pcmciastate == 1) {
		j->flags.pcmciastate = 0;
		if (!j->pccr1.bits.drf) {
			j->psccr.bits.dev = 3;
			j->psccr.bits.rw = 1;
			outb_p(j->psccr.byte, j->XILINXbase + 0x01);
			ixj_PCcontrol_wait(j);
			j->flags.pcmciascp = 1;		/* Set Cable Present Flag */

			j->flags.pcmciasct = (inw_p(j->XILINXbase + 0x00) >> 8) & 0x03;		/* Get Cable Type */

			if (j->flags.pcmciasct == 3) {
				j->flags.pcmciastate = 4;
				return 0;
			} else if (j->flags.pcmciasct == 0) {
				j->pccr2.bits.pwr = 1;
				j->pccr2.bits.rstc = 0;
				outb_p(j->pccr2.byte, j->XILINXbase + 0x02);
				j->port = PORT_SPEAKER;
			} else {
				j->port = PORT_POTS;
			}
			j->sic1.bits.cpd = 0;				/* Chip Power Down */
			j->sic1.bits.mpd = 0;				/* MIC Bias Power Down */
			j->sic1.bits.hpd = 0;				/* Handset Bias Power Down */
			j->sic1.bits.lpd = 0;				/* Line Bias Power Down */
			j->sic1.bits.spd = 1;				/* Speaker Drive Power Down */
			j->psccr.bits.addr = 1;				/* R/W Smart Cable Register Address */
			j->psccr.bits.rw = 0;				/* Read / Write flag */
			j->psccr.bits.dev = 0;
			outb(j->sic1.byte, j->XILINXbase + 0x00);
			outb(j->psccr.byte, j->XILINXbase + 0x01);
			ixj_PCcontrol_wait(j);

			j->sic2.bits.al = 0;				/* Analog Loopback DAC analog -> ADC analog */
			j->sic2.bits.dl2 = 0;				/* Digital Loopback DAC -> ADC one bit */
			j->sic2.bits.dl1 = 0;				/* Digital Loopback ADC -> DAC one bit */
			j->sic2.bits.pll = 0;				/* 1 = div 10, 0 = div 5 */
			j->sic2.bits.hpd = 0;				/* HPF disable */
			j->psccr.bits.addr = 2;				/* R/W Smart Cable Register Address */
			j->psccr.bits.rw = 0;				/* Read / Write flag */
			j->psccr.bits.dev = 0;
			outb(j->sic2.byte, j->XILINXbase + 0x00);
			outb(j->psccr.byte, j->XILINXbase + 0x01);
			ixj_PCcontrol_wait(j);

			j->psccr.bits.addr = 3;				/* R/W Smart Cable Register Address */
			j->psccr.bits.rw = 0;				/* Read / Write flag */
			j->psccr.bits.dev = 0;
			outb(0x00, j->XILINXbase + 0x00);		/* PLL Divide N1 */
			outb(j->psccr.byte, j->XILINXbase + 0x01);
			ixj_PCcontrol_wait(j);

			j->psccr.bits.addr = 4;				/* R/W Smart Cable Register Address */
			j->psccr.bits.rw = 0;				/* Read / Write flag */
			j->psccr.bits.dev = 0;
			outb(0x09, j->XILINXbase + 0x00);		/* PLL Multiply M1 */
			outb(j->psccr.byte, j->XILINXbase + 0x01);
			ixj_PCcontrol_wait(j);

			j->sirxg.bits.lig = 1;				/* Line In Gain */
			j->sirxg.bits.lim = 1;				/* Line In Mute */
			j->sirxg.bits.mcg = 0;				/* MIC In Gain was 3 */
			j->sirxg.bits.mcm = 0;				/* MIC In Mute */
			j->sirxg.bits.him = 0;				/* Handset In Mute */
			j->sirxg.bits.iir = 1;				/* IIR */
			j->psccr.bits.addr = 5;				/* R/W Smart Cable Register Address */
			j->psccr.bits.rw = 0;				/* Read / Write flag */
			j->psccr.bits.dev = 0;
			outb(j->sirxg.byte, j->XILINXbase + 0x00);
			outb(j->psccr.byte, j->XILINXbase + 0x01);
			ixj_PCcontrol_wait(j);

			ixj_siadc(j, 0x17);
			ixj_sidac(j, 0x1D);

			j->siaatt.bits.sot = 0;
			j->psccr.bits.addr = 9;				/* R/W Smart Cable Register Address */
			j->psccr.bits.rw = 0;				/* Read / Write flag */
			j->psccr.bits.dev = 0;
			outb(j->siaatt.byte, j->XILINXbase + 0x00);
			outb(j->psccr.byte, j->XILINXbase + 0x01);
			ixj_PCcontrol_wait(j);

			if (j->flags.pcmciasct == 1 && !j->readers && !j->writers) {
				j->psccr.byte = j->pslic.byte = 0;
				j->pslic.bits.powerdown = 1;
				j->psccr.bits.dev = 3;
				j->psccr.bits.rw = 0;
				outw_p(j->psccr.byte << 8 | j->pslic.byte, j->XILINXbase + 0x00);
				ixj_PCcontrol_wait(j);
			}
		}
		return 0;
	} else {
		j->flags.pcmciascp = 0;
		return 0;
	}
	return 0;
}

static int ixj_hookstate(IXJ *j)
{
	int fOffHook = 0;

	switch (j->cardtype) {
	case QTI_PHONEJACK:
		ixj_gpio_read(j);
		fOffHook = j->gpio.bits.gpio3read ? 1 : 0;
		break;
	case QTI_LINEJACK:
	case QTI_PHONEJACK_LITE:
	case QTI_PHONEJACK_PCI:
		SLIC_GetState(j);
		if(j->cardtype == QTI_LINEJACK && j->flags.pots_pstn == 1 && (j->readers || j->writers)) {
			fOffHook = j->pld_slicr.bits.potspstn ? 1 : 0;
			if(fOffHook != j->p_hook) {
				if(!j->checkwait) {
					j->checkwait = jiffies;
				} 
				if(time_before(jiffies, j->checkwait + 2)) {
					fOffHook ^= 1;
				} else {
					j->checkwait = 0;
				}
				j->p_hook = fOffHook;
	 			printk("IXJ : /dev/phone%d pots-pstn hookstate check %d at %ld\n", j->board, fOffHook, jiffies);
			}
		} else {
			if (j->pld_slicr.bits.state == PLD_SLIC_STATE_ACTIVE ||
			    j->pld_slicr.bits.state == PLD_SLIC_STATE_STANDBY) {
				if (j->flags.ringing || j->flags.cringing) {
					if (!in_interrupt()) {
						msleep(20);
					}
					SLIC_GetState(j);
					if (j->pld_slicr.bits.state == PLD_SLIC_STATE_RINGING) {
						ixj_ring_on(j);
					}
				}
				if (j->cardtype == QTI_PHONEJACK_PCI) {
					j->pld_scrr.byte = inb_p(j->XILINXbase);
					fOffHook = j->pld_scrr.pcib.det ? 1 : 0;
				} else
					fOffHook = j->pld_slicr.bits.det ? 1 : 0;
			}
		}
		break;
	case QTI_PHONECARD:
		fOffHook = ixj_pcmcia_cable_check(j);
		break;
	}
	if (j->r_hook != fOffHook) {
		j->r_hook = fOffHook;
		if (j->port == PORT_SPEAKER || j->port == PORT_HANDSET) { // || (j->port == PORT_PSTN && j->flags.pots_pstn == 0)) {
			j->ex.bits.hookstate = 1;
			ixj_kill_fasync(j, SIG_HOOKSTATE, POLL_IN);
		} else if (!fOffHook) {
			j->flash_end = jiffies + ((60 * hertz) / 100);
		}
	}
	if (fOffHook) {
		if(time_before(jiffies, j->flash_end)) {
			j->ex.bits.flash = 1;
			j->flash_end = 0;
			ixj_kill_fasync(j, SIG_FLASH, POLL_IN);
		}
	} else {
		if(time_before(jiffies, j->flash_end)) {
			fOffHook = 1;
		}
	}

	if (j->port == PORT_PSTN && j->daa_mode == SOP_PU_CONVERSATION)
		fOffHook |= 2;

	if (j->port == PORT_SPEAKER) {
		if(j->cardtype == QTI_PHONECARD) {
			if(j->flags.pcmciascp && j->flags.pcmciasct) {
				fOffHook |= 2;
			}
		} else {
			fOffHook |= 2;
		}
	}

	if (j->port == PORT_HANDSET)
		fOffHook |= 2;

	return fOffHook;
}

static void ixj_ring_off(IXJ *j)
{
	if (j->dsp.low == 0x20)	/* Internet PhoneJACK */
	 {
		if (ixjdebug & 0x0004)
			printk(KERN_INFO "IXJ Ring Off\n");
		j->gpio.bytes.high = 0x0B;
		j->gpio.bytes.low = 0x00;
		j->gpio.bits.gpio1 = 0;
		j->gpio.bits.gpio2 = 1;
		j->gpio.bits.gpio5 = 0;
		ixj_WriteDSPCommand(j->gpio.word, j);
	} else			/* Internet LineJACK */
	{
		if (ixjdebug & 0x0004)
			printk(KERN_INFO "IXJ Ring Off\n");

		if(!j->flags.cidplay)
			SLIC_SetState(PLD_SLIC_STATE_STANDBY, j);

		SLIC_GetState(j);
	}
}

static void ixj_ring_start(IXJ *j)
{
	j->flags.cringing = 1;
	if (ixjdebug & 0x0004)
		printk(KERN_INFO "IXJ Cadence Ringing Start /dev/phone%d\n", j->board);
	if (ixj_hookstate(j) & 1) {
		if (j->port == PORT_POTS)
			ixj_ring_off(j);
		j->flags.cringing = 0;
		if (ixjdebug & 0x0004)
			printk(KERN_INFO "IXJ Cadence Ringing Stopped /dev/phone%d off hook\n", j->board);
	} else if(j->cadence_f[5].enable && (!j->cadence_f[5].en_filter)) {
		j->ring_cadence_jif = jiffies;
		j->flags.cidsent = j->flags.cidring = 0;
		j->cadence_f[5].state = 0;
		if(j->cadence_f[5].on1)
			ixj_ring_on(j);
	} else {
		j->ring_cadence_jif = jiffies;
		j->ring_cadence_t = 15;
		if (j->ring_cadence & 1 << j->ring_cadence_t) {
			ixj_ring_on(j);
		} else {
			ixj_ring_off(j);
		}
		j->flags.cidsent = j->flags.cidring = j->flags.firstring = 0;
	}
}

static int ixj_ring(IXJ *j)
{
	char cntr;
	unsigned long jif;

	j->flags.ringing = 1;
	if (ixj_hookstate(j) & 1) {
		ixj_ring_off(j);
		j->flags.ringing = 0;
		return 1;
	}
	for (cntr = 0; cntr < j->maxrings; cntr++) {
		jif = jiffies + (1 * hertz);
		ixj_ring_on(j);
		while (time_before(jiffies, jif)) {
			if (ixj_hookstate(j) & 1) {
				ixj_ring_off(j);
				j->flags.ringing = 0;
				return 1;
			}
			schedule_timeout_interruptible(1);
			if (signal_pending(current))
				break;
		}
		jif = jiffies + (3 * hertz);
		ixj_ring_off(j);
		while (time_before(jiffies, jif)) {
			if (ixj_hookstate(j) & 1) {
				msleep(10);
				if (ixj_hookstate(j) & 1) {
					j->flags.ringing = 0;
					return 1;
				}
			}
			schedule_timeout_interruptible(1);
			if (signal_pending(current))
				break;
		}
	}
	ixj_ring_off(j);
	j->flags.ringing = 0;
	return 0;
}

static int ixj_open(struct phone_device *p, struct file *file_p)
{
	IXJ *j = get_ixj(p->board);
	file_p->private_data = j;

	if (!j->DSPbase)
		return -ENODEV;

        if (file_p->f_mode & FMODE_READ) {
		if(!j->readers) {
	                j->readers++;
        	} else {
                	return -EBUSY;
		}
        }

	if (file_p->f_mode & FMODE_WRITE) {
		if(!j->writers) {
			j->writers++;
		} else {
			if (file_p->f_mode & FMODE_READ){
				j->readers--;
			}
			return -EBUSY;
		}
	}

	if (j->cardtype == QTI_PHONECARD) {
		j->pslic.bits.powerdown = 0;
		j->psccr.bits.dev = 3;
		j->psccr.bits.rw = 0;
		outw_p(j->psccr.byte << 8 | j->pslic.byte, j->XILINXbase + 0x00);
		ixj_PCcontrol_wait(j);
	}

	j->flags.cidplay = 0;
	j->flags.cidcw_ack = 0;

	if (ixjdebug & 0x0002)
		printk(KERN_INFO "Opening board %d\n", p->board);

	j->framesread = j->frameswritten = 0;
	return 0;
}

static int ixj_release(struct inode *inode, struct file *file_p)
{
	IXJ_TONE ti;
	int cnt;
	IXJ *j = file_p->private_data;
	int board = j->p.board;

	/*
	 *    Set up locks to ensure that only one process is talking to the DSP at a time.
	 *    This is necessary to keep the DSP from locking up.
	 */
	while(test_and_set_bit(board, (void *)&j->busyflags) != 0)
		schedule_timeout_interruptible(1);
	if (ixjdebug & 0x0002)
		printk(KERN_INFO "Closing board %d\n", NUM(inode));

	if (j->cardtype == QTI_PHONECARD)
		ixj_set_port(j, PORT_SPEAKER);
	el