drivers/pcmcia/ti113x.h - kernel/msm-4.9 - Gitiles

 /*
  * ti113x.h 1.16 1999/10/25 20:03:34
  *
  * The contents of this file are subject to the Mozilla Public License
  * Version 1.1 (the "License"); you may not use this file except in
  * compliance with the License. You may obtain a copy of the License
  * at http://www.mozilla.org/MPL/
  *
  * Software distributed under the License is distributed on an "AS IS"
  * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
  * the License for the specific language governing rights and
  * limitations under the License.
  *
  * The initial developer of the original code is David A. Hinds
  * <dahinds@users.sourceforge.net>.  Portions created by David A. Hinds
  * are Copyright (C) 1999 David A. Hinds.  All Rights Reserved.
  *
  * Alternatively, the contents of this file may be used under the
  * terms of the GNU General Public License version 2 (the "GPL"), in which
  * case the provisions of the GPL are applicable instead of the
  * above.  If you wish to allow the use of your version of this file
  * only under the terms of the GPL and not to allow others to use
  * your version of this file under the MPL, indicate your decision by
  * deleting the provisions above and replace them with the notice and
  * other provisions required by the GPL.  If you do not delete the
  * provisions above, a recipient may use your version of this file
  * under either the MPL or the GPL.
  */

 #ifndef _LINUX_TI113X_H
 #define _LINUX_TI113X_H

 #include <linux/config.h>

 /* Register definitions for TI 113X PCI-to-CardBus bridges */

 /* System Control Register */
 #define TI113X_SYSTEM_CONTROL		0x0080	/* 32 bit */
 #define  TI113X_SCR_SMIROUTE		0x04000000
 #define  TI113X_SCR_SMISTATUS		0x02000000
 #define  TI113X_SCR_SMIENB		0x01000000
 #define  TI113X_SCR_VCCPROT		0x00200000
 #define  TI113X_SCR_REDUCEZV		0x00100000
 #define  TI113X_SCR_CDREQEN		0x00080000
 #define  TI113X_SCR_CDMACHAN		0x00070000
 #define  TI113X_SCR_SOCACTIVE		0x00002000
 #define  TI113X_SCR_PWRSTREAM		0x00000800
 #define  TI113X_SCR_DELAYUP		0x00000400
 #define  TI113X_SCR_DELAYDOWN		0x00000200
 #define  TI113X_SCR_INTERROGATE		0x00000100
 #define  TI113X_SCR_CLKRUN_SEL		0x00000080
 #define  TI113X_SCR_PWRSAVINGS		0x00000040
 #define  TI113X_SCR_SUBSYSRW		0x00000020
 #define  TI113X_SCR_CB_DPAR		0x00000010
 #define  TI113X_SCR_CDMA_EN		0x00000008
 #define  TI113X_SCR_ASYNC_IRQ		0x00000004
 #define  TI113X_SCR_KEEPCLK		0x00000002
 #define  TI113X_SCR_CLKRUN_ENA		0x00000001

 #define  TI122X_SCR_SER_STEP		0xc0000000
 #define  TI122X_SCR_INTRTIE		0x20000000
 #define  TI122X_SCR_CBRSVD		0x00400000
 #define  TI122X_SCR_MRBURSTDN		0x00008000
 #define  TI122X_SCR_MRBURSTUP		0x00004000
 #define  TI122X_SCR_RIMUX		0x00000001

 /* Multimedia Control Register */
 #define TI1250_MULTIMEDIA_CTL		0x0084	/* 8 bit */
 #define  TI1250_MMC_ZVOUTEN		0x80
 #define  TI1250_MMC_PORTSEL		0x40
 #define  TI1250_MMC_ZVEN1		0x02
 #define  TI1250_MMC_ZVEN0		0x01

 #define TI1250_GENERAL_STATUS		0x0085	/* 8 bit */
 #define TI1250_GPIO0_CONTROL		0x0088	/* 8 bit */
 #define TI1250_GPIO1_CONTROL		0x0089	/* 8 bit */
 #define TI1250_GPIO2_CONTROL		0x008a	/* 8 bit */
 #define TI1250_GPIO3_CONTROL		0x008b	/* 8 bit */
 #define TI1250_GPIO_MODE_MASK		0xc0

 /* IRQMUX/MFUNC Register */
 #define TI122X_MFUNC			0x008c	/* 32 bit */
 #define TI122X_MFUNC0_MASK		0x0000000f
 #define TI122X_MFUNC1_MASK		0x000000f0
 #define TI122X_MFUNC2_MASK		0x00000f00
 #define TI122X_MFUNC3_MASK		0x0000f000
 #define TI122X_MFUNC4_MASK		0x000f0000
 #define TI122X_MFUNC5_MASK		0x00f00000
 #define TI122X_MFUNC6_MASK		0x0f000000

 #define TI122X_MFUNC0_INTA		0x00000002
 #define TI125X_MFUNC0_INTB		0x00000001
 #define TI122X_MFUNC1_INTB		0x00000020
 #define TI122X_MFUNC3_IRQSER		0x00001000


 /* Retry Status Register */
 #define TI113X_RETRY_STATUS		0x0090	/* 8 bit */
 #define  TI113X_RSR_PCIRETRY		0x80
 #define  TI113X_RSR_CBRETRY		0x40
 #define  TI113X_RSR_TEXP_CBB		0x20
 #define  TI113X_RSR_MEXP_CBB		0x10
 #define  TI113X_RSR_TEXP_CBA		0x08
 #define  TI113X_RSR_MEXP_CBA		0x04
 #define  TI113X_RSR_TEXP_PCI		0x02
 #define  TI113X_RSR_MEXP_PCI		0x01

 /* Card Control Register */
 #define TI113X_CARD_CONTROL		0x0091	/* 8 bit */
 #define  TI113X_CCR_RIENB		0x80
 #define  TI113X_CCR_ZVENABLE		0x40
 #define  TI113X_CCR_PCI_IRQ_ENA		0x20
 #define  TI113X_CCR_PCI_IREQ		0x10
 #define  TI113X_CCR_PCI_CSC		0x08
 #define  TI113X_CCR_SPKROUTEN		0x02
 #define  TI113X_CCR_IFG			0x01

 #define  TI1220_CCR_PORT_SEL		0x20
 #define  TI122X_CCR_AUD2MUX		0x04

 /* Device Control Register */
 #define TI113X_DEVICE_CONTROL		0x0092	/* 8 bit */
 #define  TI113X_DCR_5V_FORCE		0x40
 #define  TI113X_DCR_3V_FORCE		0x20
 #define  TI113X_DCR_IMODE_MASK		0x06
 #define  TI113X_DCR_IMODE_ISA		0x02
 #define  TI113X_DCR_IMODE_SERIAL	0x04

 #define  TI12XX_DCR_IMODE_PCI_ONLY	0x00
 #define  TI12XX_DCR_IMODE_ALL_SERIAL	0x06

 /* Buffer Control Register */
 #define TI113X_BUFFER_CONTROL		0x0093	/* 8 bit */
 #define  TI113X_BCR_CB_READ_DEPTH	0x08
 #define  TI113X_BCR_CB_WRITE_DEPTH	0x04
 #define  TI113X_BCR_PCI_READ_DEPTH	0x02
 #define  TI113X_BCR_PCI_WRITE_DEPTH	0x01

 /* Diagnostic Register */
 #define TI1250_DIAGNOSTIC		0x0093	/* 8 bit */
 #define  TI1250_DIAG_TRUE_VALUE		0x80
 #define  TI1250_DIAG_PCI_IREQ		0x40
 #define  TI1250_DIAG_PCI_CSC		0x20
 #define  TI1250_DIAG_ASYNC_CSC		0x01

 /* DMA Registers */
 #define TI113X_DMA_0			0x0094	/* 32 bit */
 #define TI113X_DMA_1			0x0098	/* 32 bit */

 /* ExCA IO offset registers */
 #define TI113X_IO_OFFSET(map)		(0x36+((map)<<1))

 /* EnE test register */
 #define ENE_TEST_C9			0xc9	/* 8bit */
 #define ENE_TEST_C9_TLTENABLE		0x02

 #ifdef CONFIG_CARDBUS

 /*
  * Texas Instruments CardBus controller overrides.
  */
 #define ti_sysctl(socket)	((socket)->private[0])
 #define ti_cardctl(socket)	((socket)->private[1])
 #define ti_devctl(socket)	((socket)->private[2])
 #define ti_diag(socket)		((socket)->private[3])
 #define ti_mfunc(socket)	((socket)->private[4])
 #define ene_test_c9(socket)	((socket)->private[5])

 /*
  * These are the TI specific power management handlers.
  */
 static void ti_save_state(struct yenta_socket *socket)
 {
 	ti_sysctl(socket) = config_readl(socket, TI113X_SYSTEM_CONTROL);
 	ti_mfunc(socket) = config_readl(socket, TI122X_MFUNC);
 	ti_cardctl(socket) = config_readb(socket, TI113X_CARD_CONTROL);
 	ti_devctl(socket) = config_readb(socket, TI113X_DEVICE_CONTROL);
 	ti_diag(socket) = config_readb(socket, TI1250_DIAGNOSTIC);

 	if (socket->dev->vendor == PCI_VENDOR_ID_ENE)
 		ene_test_c9(socket) = config_readb(socket, ENE_TEST_C9);
 }

 static void ti_restore_state(struct yenta_socket *socket)
 {
 	config_writel(socket, TI113X_SYSTEM_CONTROL, ti_sysctl(socket));
 	config_writel(socket, TI122X_MFUNC, ti_mfunc(socket));
 	config_writeb(socket, TI113X_CARD_CONTROL, ti_cardctl(socket));
 	config_writeb(socket, TI113X_DEVICE_CONTROL, ti_devctl(socket));
 	config_writeb(socket, TI1250_DIAGNOSTIC, ti_diag(socket));

 	if (socket->dev->vendor == PCI_VENDOR_ID_ENE)
 		config_writeb(socket, ENE_TEST_C9, ene_test_c9(socket));
 }

 /*
  *	Zoom video control for TI122x/113x chips
  */

 static void ti_zoom_video(struct pcmcia_socket *sock, int onoff)
 {
 	u8 reg;
 	struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);

 	/* If we don't have a Zoom Video switch this is harmless,
 	   we just tristate the unused (ZV) lines */
 	reg = config_readb(socket, TI113X_CARD_CONTROL);
 	if (onoff)
 		/* Zoom zoom, we will all go together, zoom zoom, zoom zoom */
 		reg |= TI113X_CCR_ZVENABLE;
 	else
 		reg &= ~TI113X_CCR_ZVENABLE;
 	config_writeb(socket, TI113X_CARD_CONTROL, reg);
 }

 /*
  *	The 145x series can also use this. They have an additional
  *	ZV autodetect mode we don't use but don't actually need.
  *	FIXME: manual says its in func0 and func1 but disagrees with
  *	itself about this - do we need to force func0, if so we need
  *	to know a lot more about socket pairings in pcmcia_socket than
  *	we do now.. uggh.
  */

 static void ti1250_zoom_video(struct pcmcia_socket *sock, int onoff)
 {
 	struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
 	int shift = 0;
 	u8 reg;

 	ti_zoom_video(sock, onoff);

 	reg = config_readb(socket, TI1250_MULTIMEDIA_CTL);
 	reg |= TI1250_MMC_ZVOUTEN;	/* ZV bus enable */

 	if(PCI_FUNC(socket->dev->devfn)==1)
 		shift = 1;

 	if(onoff)
 	{
 		reg &= ~(1<<6); 	/* Clear select bit */
 		reg |= shift<<6;	/* Favour our socket */
 		reg |= 1<<shift;	/* Socket zoom video on */
 	}
 	else
 	{
 		reg &= ~(1<<6); 	/* Clear select bit */
 		reg |= (1^shift)<<6;	/* Favour other socket */
 		reg &= ~(1<<shift);	/* Socket zoon video off */
 	}

 	config_writeb(socket, TI1250_MULTIMEDIA_CTL, reg);
 }

 static void ti_set_zv(struct yenta_socket *socket)
 {
 	if(socket->dev->vendor == PCI_VENDOR_ID_TI)
 	{
 		switch(socket->dev->device)
 		{
 			/* There may be more .. */
 			case PCI_DEVICE_ID_TI_1220:
 			case PCI_DEVICE_ID_TI_1221:
 			case PCI_DEVICE_ID_TI_1225:
 			case PCI_DEVICE_ID_TI_4510:
 				socket->socket.zoom_video = ti_zoom_video;
 				break;
 			case PCI_DEVICE_ID_TI_1250:
 			case PCI_DEVICE_ID_TI_1251A:
 			case PCI_DEVICE_ID_TI_1251B:
 			case PCI_DEVICE_ID_TI_1450:
 				socket->socket.zoom_video = ti1250_zoom_video;
 		}
 	}
 }


 /*
  * Generic TI init - TI has an extension for the
  * INTCTL register that sets the PCI CSC interrupt.
  * Make sure we set it correctly at open and init
  * time
  * - override: disable the PCI CSC interrupt. This makes
  *   it possible to use the CSC interrupt to probe the
  *   ISA interrupts.
  * - init: set the interrupt to match our PCI state.
  *   This makes us correctly get PCI CSC interrupt
  *   events.
  */
 static int ti_init(struct yenta_socket *socket)
 {
 	u8 new, reg = exca_readb(socket, I365_INTCTL);

 	new = reg & ~I365_INTR_ENA;
 	if (socket->cb_irq)
 		new |= I365_INTR_ENA;
 	if (new != reg)
 		exca_writeb(socket, I365_INTCTL, new);
 	return 0;
 }

 static int ti_override(struct yenta_socket *socket)
 {
 	u8 new, reg = exca_readb(socket, I365_INTCTL);

 	new = reg & ~I365_INTR_ENA;
 	if (new != reg)
 		exca_writeb(socket, I365_INTCTL, new);

 	ti_set_zv(socket);

 	return 0;
 }

 static int ti113x_override(struct yenta_socket *socket)
 {
 	u8 cardctl;

 	cardctl = config_readb(socket, TI113X_CARD_CONTROL);
 	cardctl &= ~(TI113X_CCR_PCI_IRQ_ENA | TI113X_CCR_PCI_IREQ | TI113X_CCR_PCI_CSC);
 	if (socket->cb_irq)
 		cardctl |= TI113X_CCR_PCI_IRQ_ENA | TI113X_CCR_PCI_CSC | TI113X_CCR_PCI_IREQ;
 	config_writeb(socket, TI113X_CARD_CONTROL, cardctl);

 	return ti_override(socket);
 }


 /* irqrouting for func0, probes PCI interrupt and ISA interrupts */
 static void ti12xx_irqroute_func0(struct yenta_socket *socket)
 {
 	u32 mfunc, mfunc_old, devctl;
 	u8 gpio3, gpio3_old;
 	int pci_irq_status;

 	mfunc = mfunc_old = config_readl(socket, TI122X_MFUNC);
 	devctl = config_readb(socket, TI113X_DEVICE_CONTROL);
 	printk(KERN_INFO "Yenta TI: socket %s, mfunc 0x%08x, devctl 0x%02x\n",
 	       pci_name(socket->dev), mfunc, devctl);

 	/* make sure PCI interrupts are enabled before probing */
 	ti_init(socket);

 	/* test PCI interrupts first. only try fixing if return value is 0! */
 	pci_irq_status = yenta_probe_cb_irq(socket);
 	if (pci_irq_status)
 		goto out;

 	/*
 	 * We're here which means PCI interrupts are _not_ delivered. try to
 	 * find the right setting (all serial or parallel)
 	 */
 	printk(KERN_INFO "Yenta TI: socket %s probing PCI interrupt failed, trying to fix\n",
 	       pci_name(socket->dev));

 	/* for serial PCI make sure MFUNC3 is set to IRQSER */
 	if ((devctl & TI113X_DCR_IMODE_MASK) == TI12XX_DCR_IMODE_ALL_SERIAL) {
 		switch (socket->dev->device) {
 		case PCI_DEVICE_ID_TI_1250:
 		case PCI_DEVICE_ID_TI_1251A:
 		case PCI_DEVICE_ID_TI_1251B:
 		case PCI_DEVICE_ID_TI_1450:
 		case PCI_DEVICE_ID_TI_1451A:
 		case PCI_DEVICE_ID_TI_4450:
 		case PCI_DEVICE_ID_TI_4451:
 			/* these chips have no IRQSER setting in MFUNC3  */
 			break;

 		default:
 			mfunc = (mfunc & ~TI122X_MFUNC3_MASK) | TI122X_MFUNC3_IRQSER;

 			/* write down if changed, probe */
 			if (mfunc != mfunc_old) {
 				config_writel(socket, TI122X_MFUNC, mfunc);

 				pci_irq_status = yenta_probe_cb_irq(socket);
 				if (pci_irq_status == 1) {
 					printk(KERN_INFO "Yenta TI: socket %s all-serial interrupts ok\n",
 					       pci_name(socket->dev));
 					mfunc_old = mfunc;
 					goto out;
 				}

 				/* not working, back to old value */
 				mfunc = mfunc_old;
 				config_writel(socket, TI122X_MFUNC, mfunc);

 				if (pci_irq_status == -1)
 					goto out;
 			}
 		}

 		/* serial PCI interrupts not working fall back to parallel */
 		printk(KERN_INFO "Yenta TI: socket %s falling back to parallel PCI interrupts\n",
 		       pci_name(socket->dev));
 		devctl &= ~TI113X_DCR_IMODE_MASK;
 		devctl |= TI113X_DCR_IMODE_SERIAL; /* serial ISA could be right */
 		config_writeb(socket, TI113X_DEVICE_CONTROL, devctl);
 	}

 	/* parallel PCI interrupts: route INTA */
 	switch (socket->dev->device) {
 	case PCI_DEVICE_ID_TI_1250:
 	case PCI_DEVICE_ID_TI_1251A:
 	case PCI_DEVICE_ID_TI_1251B:
 	case PCI_DEVICE_ID_TI_1450:
 		/* make sure GPIO3 is set to INTA */
 		gpio3 = gpio3_old = config_readb(socket, TI1250_GPIO3_CONTROL);
 		gpio3 &= ~TI1250_GPIO_MODE_MASK;
 		if (gpio3 != gpio3_old)
 			config_writeb(socket, TI1250_GPIO3_CONTROL, gpio3);
 		break;

 	default:
 		gpio3 = gpio3_old = 0;

 		mfunc = (mfunc & ~TI122X_MFUNC0_MASK) | TI122X_MFUNC0_INTA;
 		if (mfunc != mfunc_old)
 			config_writel(socket, TI122X_MFUNC, mfunc);
 	}

 	/* time to probe again */
 	pci_irq_status = yenta_probe_cb_irq(socket);
 	if (pci_irq_status == 1) {
 		mfunc_old = mfunc;
 		printk(KERN_INFO "Yenta TI: socket %s parallel PCI interrupts ok\n",
 		       pci_name(socket->dev));
 	} else {
 		/* not working, back to old value */
 		mfunc = mfunc_old;
 		config_writel(socket, TI122X_MFUNC, mfunc);
 		if (gpio3 != gpio3_old)
 			config_writeb(socket, TI1250_GPIO3_CONTROL, gpio3_old);
 	}

 out:
 	if (pci_irq_status < 1) {
 		socket->cb_irq = 0;
 		printk(KERN_INFO "Yenta TI: socket %s no PCI interrupts. Fish. Please report.\n",
 		       pci_name(socket->dev));
 	}
 }


 /* changes the irq of func1 to match that of func0 */
 static int ti12xx_align_irqs(struct yenta_socket *socket, int *old_irq)
 {
 	struct pci_dev *func0;

 	/* find func0 device */
 	func0 = pci_get_slot(socket->dev->bus, socket->dev->devfn & ~0x07);
 	if (!func0)
 		return 0;

 	if (old_irq)
 		*old_irq = socket->cb_irq;
 	socket->cb_irq = socket->dev->irq = func0->irq;

 	pci_dev_put(func0);

 	return 1;
 }

 /*
  * ties INTA and INTB together. also changes the devices irq to that of
  * the function 0 device. call from func1 only.
  * returns 1 if INTRTIE changed, 0 otherwise.
  */
 static int ti12xx_tie_interrupts(struct yenta_socket *socket, int *old_irq)
 {
 	u32 sysctl;
 	int ret;

 	sysctl = config_readl(socket, TI113X_SYSTEM_CONTROL);
 	if (sysctl & TI122X_SCR_INTRTIE)
 		return 0;

 	/* align */
 	ret = ti12xx_align_irqs(socket, old_irq);
 	if (!ret)
 		return 0;

 	/* tie */
 	sysctl |= TI122X_SCR_INTRTIE;
 	config_writel(socket, TI113X_SYSTEM_CONTROL, sysctl);

 	return 1;
 }

 /* undo what ti12xx_tie_interrupts() did */
 static void ti12xx_untie_interrupts(struct yenta_socket *socket, int old_irq)
 {
 	u32 sysctl = config_readl(socket, TI113X_SYSTEM_CONTROL);
 	sysctl &= ~TI122X_SCR_INTRTIE;
 	config_writel(socket, TI113X_SYSTEM_CONTROL, sysctl);

 	socket->cb_irq = socket->dev->irq = old_irq;
 }

 /*
  * irqrouting for func1, plays with INTB routing
  * only touches MFUNC for INTB routing. all other bits are taken
  * care of in func0 already.
  */
 static void ti12xx_irqroute_func1(struct yenta_socket *socket)
 {
 	u32 mfunc, mfunc_old, devctl, sysctl;
 	int pci_irq_status;

 	mfunc = mfunc_old = config_readl(socket, TI122X_MFUNC);
 	devctl = config_readb(socket, TI113X_DEVICE_CONTROL);
 	printk(KERN_INFO "Yenta TI: socket %s, mfunc 0x%08x, devctl 0x%02x\n",
 	       pci_name(socket->dev), mfunc, devctl);

 	/* if IRQs are configured as tied, align irq of func1 with func0 */
 	sysctl = config_readl(socket, TI113X_SYSTEM_CONTROL);
 	if (sysctl & TI122X_SCR_INTRTIE)
 		ti12xx_align_irqs(socket, NULL);

 	/* make sure PCI interrupts are enabled before probing */
 	ti_init(socket);

 	/* test PCI interrupts first. only try fixing if return value is 0! */
 	pci_irq_status = yenta_probe_cb_irq(socket);
 	if (pci_irq_status)
 		goto out;

 	/*
 	 * We're here which means PCI interrupts are _not_ delivered. try to
 	 * find the right setting
 	 */
 	printk(KERN_INFO "Yenta TI: socket %s probing PCI interrupt failed, trying to fix\n",
 	       pci_name(socket->dev));


 	/* if all serial: set INTRTIE, probe again */
 	if ((devctl & TI113X_DCR_IMODE_MASK) == TI12XX_DCR_IMODE_ALL_SERIAL) {
 		int old_irq;

 		if (ti12xx_tie_interrupts(socket, &old_irq)) {
 			pci_irq_status = yenta_probe_cb_irq(socket);
 			if (pci_irq_status == 1) {
 				printk(KERN_INFO "Yenta TI: socket %s all-serial interrupts, tied ok\n",
 				       pci_name(socket->dev));
 				goto out;
 			}

 			ti12xx_untie_interrupts(socket, old_irq);
 		}
 	}
 	/* parallel PCI: route INTB, probe again */
 	else {
 		int old_irq;

 		switch (socket->dev->device) {
 		case PCI_DEVICE_ID_TI_1250:
 			/* the 1250 has one pin for IRQSER/INTB depending on devctl */
 			break;

 		case PCI_DEVICE_ID_TI_1251A:
 		case PCI_DEVICE_ID_TI_1251B:
 		case PCI_DEVICE_ID_TI_1450:
 			/*
 			 *  those have a pin for IRQSER/INTB plus INTB in MFUNC0
 			 *  we alread probed the shared pin, now go for MFUNC0
 			 */
 			mfunc = (mfunc & ~TI122X_MFUNC0_MASK) | TI125X_MFUNC0_INTB;
 			break;

 		default:
 			mfunc = (mfunc & ~TI122X_MFUNC1_MASK) | TI122X_MFUNC1_INTB;
 			break;
 		}

 		/* write, probe */
 		if (mfunc != mfunc_old) {
 			config_writel(socket, TI122X_MFUNC, mfunc);

 			pci_irq_status = yenta_probe_cb_irq(socket);
 			if (pci_irq_status == 1) {
 				printk(KERN_INFO "Yenta TI: socket %s parallel PCI interrupts ok\n",
 				       pci_name(socket->dev));
 				goto out;
 			}

 			mfunc = mfunc_old;
 			config_writel(socket, TI122X_MFUNC, mfunc);

 			if (pci_irq_status == -1)
 				goto out;
 		}

 		/* still nothing: set INTRTIE */
 		if (ti12xx_tie_interrupts(socket, &old_irq)) {
 			pci_irq_status = yenta_probe_cb_irq(socket);
 			if (pci_irq_status == 1) {
 				printk(KERN_INFO "Yenta TI: socket %s parallel PCI interrupts, tied ok\n",
 				       pci_name(socket->dev));
 				goto out;
 			}

 			ti12xx_untie_interrupts(socket, old_irq);
 		}
 	}

 out:
 	if (pci_irq_status < 1) {
 		socket->cb_irq = 0;
 		printk(KERN_INFO "Yenta TI: socket %s no PCI interrupts. Fish. Please report.\n",
 		       pci_name(socket->dev));
 	}
 }

 static int ti12xx_override(struct yenta_socket *socket)
 {
 	u32 val, val_orig;

 	/* make sure that memory burst is active */
 	val_orig = val = config_readl(socket, TI113X_SYSTEM_CONTROL);
 	if (disable_clkrun && PCI_FUNC(socket->dev->devfn) == 0) {
 		printk(KERN_INFO "Yenta: Disabling CLKRUN feature\n");
 		val |= TI113X_SCR_KEEPCLK;
 	}
 	if (!(val & TI122X_SCR_MRBURSTUP)) {
 		printk(KERN_INFO "Yenta: Enabling burst memory read transactions\n");
 		val |= TI122X_SCR_MRBURSTUP;
 	}
 	if (val_orig != val)
 		config_writel(socket, TI113X_SYSTEM_CONTROL, val);

 	/*
 	 * for EnE bridges only: clear testbit TLTEnable. this makes the
 	 * RME Hammerfall DSP sound card working.
 	 */
 	if (socket->dev->vendor == PCI_VENDOR_ID_ENE) {
 		u8 test_c9 = config_readb(socket, ENE_TEST_C9);
 		test_c9 &= ~ENE_TEST_C9_TLTENABLE;
 		config_writeb(socket, ENE_TEST_C9, test_c9);
 	}

 	/*
 	 * Yenta expects controllers to use CSCINT to route
 	 * CSC interrupts to PCI rather than INTVAL.
 	 */
 	val = config_readb(socket, TI1250_DIAGNOSTIC);
 	printk(KERN_INFO "Yenta: Using %s to route CSC interrupts to PCI\n",
 		(val & TI1250_DIAG_PCI_CSC) ? "CSCINT" : "INTVAL");
 	printk(KERN_INFO "Yenta: Routing CardBus interrupts to %s\n",
 		(val & TI1250_DIAG_PCI_IREQ) ? "PCI" : "ISA");

 	/* do irqrouting, depending on function */
 	if (PCI_FUNC(socket->dev->devfn) == 0)
 		ti12xx_irqroute_func0(socket);
 	else
 		ti12xx_irqroute_func1(socket);

 	return ti_override(socket);
 }


 static int ti1250_override(struct yenta_socket *socket)
 {
 	u8 old, diag;

 	old = config_readb(socket, TI1250_DIAGNOSTIC);
 	diag = old & ~(TI1250_DIAG_PCI_CSC | TI1250_DIAG_PCI_IREQ);
 	if (socket->cb_irq)
 		diag |= TI1250_DIAG_PCI_CSC | TI1250_DIAG_PCI_IREQ;

 	if (diag != old) {
 		printk(KERN_INFO "Yenta: adjusting diagnostic: %02x -> %02x\n",
 			old, diag);
 		config_writeb(socket, TI1250_DIAGNOSTIC, diag);
 	}

 	return ti12xx_override(socket);
 }

 #endif /* CONFIG_CARDBUS */

 #endif /* _LINUX_TI113X_H */
	/*
	* ti113x.h 1.16 1999/10/25 20:03:34
	*
	* The contents of this file are subject to the Mozilla Public License
	* Version 1.1 (the "License"); you may not use this file except in
	* compliance with the License. You may obtain a copy of the License
	* at http://www.mozilla.org/MPL/
	*
	* Software distributed under the License is distributed on an "AS IS"
	* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
	* the License for the specific language governing rights and
	* limitations under the License.
	*
	* The initial developer of the original code is David A. Hinds
	* <dahinds@users.sourceforge.net>. Portions created by David A. Hinds
	* are Copyright (C) 1999 David A. Hinds. All Rights Reserved.
	*
	* Alternatively, the contents of this file may be used under the
	* terms of the GNU General Public License version 2 (the "GPL"), in which
	* case the provisions of the GPL are applicable instead of the
	* above. If you wish to allow the use of your version of this file
	* only under the terms of the GPL and not to allow others to use
	* your version of this file under the MPL, indicate your decision by
	* deleting the provisions above and replace them with the notice and
	* other provisions required by the GPL. If you do not delete the
	* provisions above, a recipient may use your version of this file
	* under either the MPL or the GPL.
	*/

	#ifndef _LINUX_TI113X_H
	#define _LINUX_TI113X_H

	#include <linux/config.h>

	/* Register definitions for TI 113X PCI-to-CardBus bridges */

	/* System Control Register */
	#define TI113X_SYSTEM_CONTROL 0x0080 /* 32 bit */
	#define TI113X_SCR_SMIROUTE 0x04000000
	#define TI113X_SCR_SMISTATUS 0x02000000
	#define TI113X_SCR_SMIENB 0x01000000
	#define TI113X_SCR_VCCPROT 0x00200000
	#define TI113X_SCR_REDUCEZV 0x00100000
	#define TI113X_SCR_CDREQEN 0x00080000
	#define TI113X_SCR_CDMACHAN 0x00070000
	#define TI113X_SCR_SOCACTIVE 0x00002000
	#define TI113X_SCR_PWRSTREAM 0x00000800
	#define TI113X_SCR_DELAYUP 0x00000400
	#define TI113X_SCR_DELAYDOWN 0x00000200
	#define TI113X_SCR_INTERROGATE 0x00000100
	#define TI113X_SCR_CLKRUN_SEL 0x00000080
	#define TI113X_SCR_PWRSAVINGS 0x00000040
	#define TI113X_SCR_SUBSYSRW 0x00000020
	#define TI113X_SCR_CB_DPAR 0x00000010
	#define TI113X_SCR_CDMA_EN 0x00000008
	#define TI113X_SCR_ASYNC_IRQ 0x00000004
	#define TI113X_SCR_KEEPCLK 0x00000002
	#define TI113X_SCR_CLKRUN_ENA 0x00000001

	#define TI122X_SCR_SER_STEP 0xc0000000
	#define TI122X_SCR_INTRTIE 0x20000000
	#define TI122X_SCR_CBRSVD 0x00400000
	#define TI122X_SCR_MRBURSTDN 0x00008000
	#define TI122X_SCR_MRBURSTUP 0x00004000
	#define TI122X_SCR_RIMUX 0x00000001

	/* Multimedia Control Register */
	#define TI1250_MULTIMEDIA_CTL 0x0084 /* 8 bit */
	#define TI1250_MMC_ZVOUTEN 0x80
	#define TI1250_MMC_PORTSEL 0x40
	#define TI1250_MMC_ZVEN1 0x02
	#define TI1250_MMC_ZVEN0 0x01

	#define TI1250_GENERAL_STATUS 0x0085 /* 8 bit */
	#define TI1250_GPIO0_CONTROL 0x0088 /* 8 bit */
	#define TI1250_GPIO1_CONTROL 0x0089 /* 8 bit */
	#define TI1250_GPIO2_CONTROL 0x008a /* 8 bit */
	#define TI1250_GPIO3_CONTROL 0x008b /* 8 bit */
	#define TI1250_GPIO_MODE_MASK 0xc0

	/* IRQMUX/MFUNC Register */
	#define TI122X_MFUNC 0x008c /* 32 bit */
	#define TI122X_MFUNC0_MASK 0x0000000f
	#define TI122X_MFUNC1_MASK 0x000000f0
	#define TI122X_MFUNC2_MASK 0x00000f00
	#define TI122X_MFUNC3_MASK 0x0000f000
	#define TI122X_MFUNC4_MASK 0x000f0000
	#define TI122X_MFUNC5_MASK 0x00f00000
	#define TI122X_MFUNC6_MASK 0x0f000000

	#define TI122X_MFUNC0_INTA 0x00000002
	#define TI125X_MFUNC0_INTB 0x00000001
	#define TI122X_MFUNC1_INTB 0x00000020
	#define TI122X_MFUNC3_IRQSER 0x00001000


	/* Retry Status Register */
	#define TI113X_RETRY_STATUS 0x0090 /* 8 bit */
	#define TI113X_RSR_PCIRETRY 0x80
	#define TI113X_RSR_CBRETRY 0x40
	#define TI113X_RSR_TEXP_CBB 0x20
	#define TI113X_RSR_MEXP_CBB 0x10
	#define TI113X_RSR_TEXP_CBA 0x08
	#define TI113X_RSR_MEXP_CBA 0x04
	#define TI113X_RSR_TEXP_PCI 0x02
	#define TI113X_RSR_MEXP_PCI 0x01

	/* Card Control Register */
	#define TI113X_CARD_CONTROL 0x0091 /* 8 bit */
	#define TI113X_CCR_RIENB 0x80
	#define TI113X_CCR_ZVENABLE 0x40
	#define TI113X_CCR_PCI_IRQ_ENA 0x20
	#define TI113X_CCR_PCI_IREQ 0x10
	#define TI113X_CCR_PCI_CSC 0x08
	#define TI113X_CCR_SPKROUTEN 0x02
	#define TI113X_CCR_IFG 0x01

	#define TI1220_CCR_PORT_SEL 0x20
	#define TI122X_CCR_AUD2MUX 0x04

	/* Device Control Register */
	#define TI113X_DEVICE_CONTROL 0x0092 /* 8 bit */
	#define TI113X_DCR_5V_FORCE 0x40
	#define TI113X_DCR_3V_FORCE 0x20
	#define TI113X_DCR_IMODE_MASK 0x06
	#define TI113X_DCR_IMODE_ISA 0x02
	#define TI113X_DCR_IMODE_SERIAL 0x04

	#define TI12XX_DCR_IMODE_PCI_ONLY 0x00
	#define TI12XX_DCR_IMODE_ALL_SERIAL 0x06

	/* Buffer Control Register */
	#define TI113X_BUFFER_CONTROL 0x0093 /* 8 bit */
	#define TI113X_BCR_CB_READ_DEPTH 0x08
	#define TI113X_BCR_CB_WRITE_DEPTH 0x04
	#define TI113X_BCR_PCI_READ_DEPTH 0x02
	#define TI113X_BCR_PCI_WRITE_DEPTH 0x01

	/* Diagnostic Register */
	#define TI1250_DIAGNOSTIC 0x0093 /* 8 bit */
	#define TI1250_DIAG_TRUE_VALUE 0x80
	#define TI1250_DIAG_PCI_IREQ 0x40
	#define TI1250_DIAG_PCI_CSC 0x20
	#define TI1250_DIAG_ASYNC_CSC 0x01

	/* DMA Registers */
	#define TI113X_DMA_0 0x0094 /* 32 bit */
	#define TI113X_DMA_1 0x0098 /* 32 bit */

	/* ExCA IO offset registers */
	#define TI113X_IO_OFFSET(map) (0x36+((map)<<1))

	/* EnE test register */
	#define ENE_TEST_C9 0xc9 /* 8bit */
	#define ENE_TEST_C9_TLTENABLE 0x02

	#ifdef CONFIG_CARDBUS

	/*
	* Texas Instruments CardBus controller overrides.
	*/
	#define ti_sysctl(socket) ((socket)->private[0])
	#define ti_cardctl(socket) ((socket)->private[1])
	#define ti_devctl(socket) ((socket)->private[2])
	#define ti_diag(socket) ((socket)->private[3])
	#define ti_mfunc(socket) ((socket)->private[4])
	#define ene_test_c9(socket) ((socket)->private[5])

	/*
	* These are the TI specific power management handlers.
	*/
	static void ti_save_state(struct yenta_socket *socket)
	{
	ti_sysctl(socket) = config_readl(socket, TI113X_SYSTEM_CONTROL);
	ti_mfunc(socket) = config_readl(socket, TI122X_MFUNC);
	ti_cardctl(socket) = config_readb(socket, TI113X_CARD_CONTROL);
	ti_devctl(socket) = config_readb(socket, TI113X_DEVICE_CONTROL);
	ti_diag(socket) = config_readb(socket, TI1250_DIAGNOSTIC);

	if (socket->dev->vendor == PCI_VENDOR_ID_ENE)
	ene_test_c9(socket) = config_readb(socket, ENE_TEST_C9);
	}

	static void ti_restore_state(struct yenta_socket *socket)
	{
	config_writel(socket, TI113X_SYSTEM_CONTROL, ti_sysctl(socket));
	config_writel(socket, TI122X_MFUNC, ti_mfunc(socket));
	config_writeb(socket, TI113X_CARD_CONTROL, ti_cardctl(socket));
	config_writeb(socket, TI113X_DEVICE_CONTROL, ti_devctl(socket));
	config_writeb(socket, TI1250_DIAGNOSTIC, ti_diag(socket));

	if (socket->dev->vendor == PCI_VENDOR_ID_ENE)
	config_writeb(socket, ENE_TEST_C9, ene_test_c9(socket));
	}

	/*
	* Zoom video control for TI122x/113x chips
	*/

	static void ti_zoom_video(struct pcmcia_socket *sock, int onoff)
	{
	u8 reg;
	struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);

	/* If we don't have a Zoom Video switch this is harmless,
	we just tristate the unused (ZV) lines */
	reg = config_readb(socket, TI113X_CARD_CONTROL);
	if (onoff)
	/* Zoom zoom, we will all go together, zoom zoom, zoom zoom */
	reg \|= TI113X_CCR_ZVENABLE;
	else
	reg &= ~TI113X_CCR_ZVENABLE;
	config_writeb(socket, TI113X_CARD_CONTROL, reg);
	}

	/*
	* The 145x series can also use this. They have an additional
	* ZV autodetect mode we don't use but don't actually need.
	* FIXME: manual says its in func0 and func1 but disagrees with
	* itself about this - do we need to force func0, if so we need
	* to know a lot more about socket pairings in pcmcia_socket than
	* we do now.. uggh.
	*/

	static void ti1250_zoom_video(struct pcmcia_socket *sock, int onoff)
	{
	struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
	int shift = 0;
	u8 reg;

	ti_zoom_video(sock, onoff);

	reg = config_readb(socket, TI1250_MULTIMEDIA_CTL);
	reg \|= TI1250_MMC_ZVOUTEN; /* ZV bus enable */

	if(PCI_FUNC(socket->dev->devfn)==1)
	shift = 1;

	if(onoff)
	{
	reg &= ~(1<<6); /* Clear select bit */
	reg \|= shift<<6; /* Favour our socket */
	reg \|= 1<<shift; /* Socket zoom video on */
	}
	else
	{
	reg &= ~(1<<6); /* Clear select bit */
	reg \|= (1^shift)<<6; /* Favour other socket */
	reg &= ~(1<<shift); /* Socket zoon video off */
	}

	config_writeb(socket, TI1250_MULTIMEDIA_CTL, reg);
	}

	static void ti_set_zv(struct yenta_socket *socket)
	{
	if(socket->dev->vendor == PCI_VENDOR_ID_TI)
	{
	switch(socket->dev->device)
	{
	/* There may be more .. */
	case PCI_DEVICE_ID_TI_1220:
	case PCI_DEVICE_ID_TI_1221:
	case PCI_DEVICE_ID_TI_1225:
	case PCI_DEVICE_ID_TI_4510:
	socket->socket.zoom_video = ti_zoom_video;
	break;
	case PCI_DEVICE_ID_TI_1250:
	case PCI_DEVICE_ID_TI_1251A:
	case PCI_DEVICE_ID_TI_1251B:
	case PCI_DEVICE_ID_TI_1450:
	socket->socket.zoom_video = ti1250_zoom_video;
	}
	}
	}


	/*
	* Generic TI init - TI has an extension for the
	* INTCTL register that sets the PCI CSC interrupt.
	* Make sure we set it correctly at open and init
	* time
	* - override: disable the PCI CSC interrupt. This makes
	* it possible to use the CSC interrupt to probe the
	* ISA interrupts.
	* - init: set the interrupt to match our PCI state.
	* This makes us correctly get PCI CSC interrupt
	* events.
	*/
	static int ti_init(struct yenta_socket *socket)
	{
	u8 new, reg = exca_readb(socket, I365_INTCTL);

	new = reg & ~I365_INTR_ENA;
	if (socket->cb_irq)
	new \|= I365_INTR_ENA;
	if (new != reg)
	exca_writeb(socket, I365_INTCTL, new);
	return 0;
	}

	static int ti_override(struct yenta_socket *socket)
	{
	u8 new, reg = exca_readb(socket, I365_INTCTL);

	new = reg & ~I365_INTR_ENA;
	if (new != reg)
	exca_writeb(socket, I365_INTCTL, new);

	ti_set_zv(socket);

	return 0;
	}

	static int ti113x_override(struct yenta_socket *socket)
	{
	u8 cardctl;

	cardctl = config_readb(socket, TI113X_CARD_CONTROL);
	cardctl &= ~(TI113X_CCR_PCI_IRQ_ENA \| TI113X_CCR_PCI_IREQ \| TI113X_CCR_PCI_CSC);
	if (socket->cb_irq)
	cardctl \|= TI113X_CCR_PCI_IRQ_ENA \| TI113X_CCR_PCI_CSC \| TI113X_CCR_PCI_IREQ;
	config_writeb(socket, TI113X_CARD_CONTROL, cardctl);

	return ti_override(socket);
	}


	/* irqrouting for func0, probes PCI interrupt and ISA interrupts */
	static void ti12xx_irqroute_func0(struct yenta_socket *socket)
	{
	u32 mfunc, mfunc_old, devctl;
	u8 gpio3, gpio3_old;
	int pci_irq_status;

	mfunc = mfunc_old = config_readl(socket, TI122X_MFUNC);
	devctl = config_readb(socket, TI113X_DEVICE_CONTROL);
	printk(KERN_INFO "Yenta TI: socket %s, mfunc 0x%08x, devctl 0x%02x\n",
	pci_name(socket->dev), mfunc, devctl);

	/* make sure PCI interrupts are enabled before probing */
	ti_init(socket);

	/* test PCI interrupts first. only try fixing if return value is 0! */
	pci_irq_status = yenta_probe_cb_irq(socket);
	if (pci_irq_status)
	goto out;

	/*
	* We're here which means PCI interrupts are _not_ delivered. try to
	* find the right setting (all serial or parallel)
	*/
	printk(KERN_INFO "Yenta TI: socket %s probing PCI interrupt failed, trying to fix\n",
	pci_name(socket->dev));

	/* for serial PCI make sure MFUNC3 is set to IRQSER */
	if ((devctl & TI113X_DCR_IMODE_MASK) == TI12XX_DCR_IMODE_ALL_SERIAL) {
	switch (socket->dev->device) {
	case PCI_DEVICE_ID_TI_1250:
	case PCI_DEVICE_ID_TI_1251A:
	case PCI_DEVICE_ID_TI_1251B:
	case PCI_DEVICE_ID_TI_1450:
	case PCI_DEVICE_ID_TI_1451A:
	case PCI_DEVICE_ID_TI_4450:
	case PCI_DEVICE_ID_TI_4451:
	/* these chips have no IRQSER setting in MFUNC3 */
	break;

	default:
	mfunc = (mfunc & ~TI122X_MFUNC3_MASK) \| TI122X_MFUNC3_IRQSER;

	/* write down if changed, probe */
	if (mfunc != mfunc_old) {
	config_writel(socket, TI122X_MFUNC, mfunc);

	pci_irq_status = yenta_probe_cb_irq(socket);
	if (pci_irq_status == 1) {
	printk(KERN_INFO "Yenta TI: socket %s all-serial interrupts ok\n",
	pci_name(socket->dev));
	mfunc_old = mfunc;
	goto out;
	}

	/* not working, back to old value */
	mfunc = mfunc_old;
	config_writel(socket, TI122X_MFUNC, mfunc);

	if (pci_irq_status == -1)
	goto out;
	}
	}

	/* serial PCI interrupts not working fall back to parallel */
	printk(KERN_INFO "Yenta TI: socket %s falling back to parallel PCI interrupts\n",
	pci_name(socket->dev));
	devctl &= ~TI113X_DCR_IMODE_MASK;
	devctl \|= TI113X_DCR_IMODE_SERIAL; /* serial ISA could be right */
	config_writeb(socket, TI113X_DEVICE_CONTROL, devctl);
	}

	/* parallel PCI interrupts: route INTA */
	switch (socket->dev->device) {
	case PCI_DEVICE_ID_TI_1250:
	case PCI_DEVICE_ID_TI_1251A:
	case PCI_DEVICE_ID_TI_1251B:
	case PCI_DEVICE_ID_TI_1450:
	/* make sure GPIO3 is set to INTA */
	gpio3 = gpio3_old = config_readb(socket, TI1250_GPIO3_CONTROL);
	gpio3 &= ~TI1250_GPIO_MODE_MASK;
	if (gpio3 != gpio3_old)
	config_writeb(socket, TI1250_GPIO3_CONTROL, gpio3);
	break;

	default:
	gpio3 = gpio3_old = 0;

	mfunc = (mfunc & ~TI122X_MFUNC0_MASK) \| TI122X_MFUNC0_INTA;
	if (mfunc != mfunc_old)
	config_writel(socket, TI122X_MFUNC, mfunc);
	}

	/* time to probe again */
	pci_irq_status = yenta_probe_cb_irq(socket);
	if (pci_irq_status == 1) {
	mfunc_old = mfunc;
	printk(KERN_INFO "Yenta TI: socket %s parallel PCI interrupts ok\n",
	pci_name(socket->dev));
	} else {
	/* not working, back to old value */
	mfunc = mfunc_old;
	config_writel(socket, TI122X_MFUNC, mfunc);
	if (gpio3 != gpio3_old)
	config_writeb(socket, TI1250_GPIO3_CONTROL, gpio3_old);
	}

	out:
	if (pci_irq_status < 1) {
	socket->cb_irq = 0;
	printk(KERN_INFO "Yenta TI: socket %s no PCI interrupts. Fish. Please report.\n",
	pci_name(socket->dev));
	}
	}


	/* changes the irq of func1 to match that of func0 */
	static int ti12xx_align_irqs(struct yenta_socket socket, int old_irq)
	{
	struct pci_dev *func0;

	/* find func0 device */
	func0 = pci_get_slot(socket->dev->bus, socket->dev->devfn & ~0x07);
	if (!func0)
	return 0;

	if (old_irq)
	*old_irq = socket->cb_irq;
	socket->cb_irq = socket->dev->irq = func0->irq;

	pci_dev_put(func0);

	return 1;
	}

	/*
	* ties INTA and INTB together. also changes the devices irq to that of
	* the function 0 device. call from func1 only.
	* returns 1 if INTRTIE changed, 0 otherwise.
	*/
	static int ti12xx_tie_interrupts(struct yenta_socket socket, int old_irq)
	{
	u32 sysctl;
	int ret;

	sysctl = config_readl(socket, TI113X_SYSTEM_CONTROL);
	if (sysctl & TI122X_SCR_INTRTIE)
	return 0;

	/* align */
	ret = ti12xx_align_irqs(socket, old_irq);
	if (!ret)
	return 0;

	/* tie */
	sysctl \|= TI122X_SCR_INTRTIE;
	config_writel(socket, TI113X_SYSTEM_CONTROL, sysctl);

	return 1;
	}

	/* undo what ti12xx_tie_interrupts() did */
	static void ti12xx_untie_interrupts(struct yenta_socket *socket, int old_irq)
	{
	u32 sysctl = config_readl(socket, TI113X_SYSTEM_CONTROL);
	sysctl &= ~TI122X_SCR_INTRTIE;
	config_writel(socket, TI113X_SYSTEM_CONTROL, sysctl);

	socket->cb_irq = socket->dev->irq = old_irq;
	}

	/*
	* irqrouting for func1, plays with INTB routing
	* only touches MFUNC for INTB routing. all other bits are taken
	* care of in func0 already.
	*/
	static void ti12xx_irqroute_func1(struct yenta_socket *socket)
	{
	u32 mfunc, mfunc_old, devctl, sysctl;
	int pci_irq_status;

	mfunc = mfunc_old = config_readl(socket, TI122X_MFUNC);
	devctl = config_readb(socket, TI113X_DEVICE_CONTROL);
	printk(KERN_INFO "Yenta TI: socket %s, mfunc 0x%08x, devctl 0x%02x\n",
	pci_name(socket->dev), mfunc, devctl);

	/* if IRQs are configured as tied, align irq of func1 with func0 */
	sysctl = config_readl(socket, TI113X_SYSTEM_CONTROL);
	if (sysctl & TI122X_SCR_INTRTIE)
	ti12xx_align_irqs(socket, NULL);

	/* make sure PCI interrupts are enabled before probing */
	ti_init(socket);

	/* test PCI interrupts first. only try fixing if return value is 0! */
	pci_irq_status = yenta_probe_cb_irq(socket);
	if (pci_irq_status)
	goto out;

	/*
	* We're here which means PCI interrupts are _not_ delivered. try to
	* find the right setting
	*/
	printk(KERN_INFO "Yenta TI: socket %s probing PCI interrupt failed, trying to fix\n",
	pci_name(socket->dev));


	/* if all serial: set INTRTIE, probe again */
	if ((devctl & TI113X_DCR_IMODE_MASK) == TI12XX_DCR_IMODE_ALL_SERIAL) {
	int old_irq;

	if (ti12xx_tie_interrupts(socket, &old_irq)) {
	pci_irq_status = yenta_probe_cb_irq(socket);
	if (pci_irq_status == 1) {
	printk(KERN_INFO "Yenta TI: socket %s all-serial interrupts, tied ok\n",
	pci_name(socket->dev));
	goto out;
	}

	ti12xx_untie_interrupts(socket, old_irq);
	}
	}
	/* parallel PCI: route INTB, probe again */
	else {
	int old_irq;

	switch (socket->dev->device) {
	case PCI_DEVICE_ID_TI_1250:
	/* the 1250 has one pin for IRQSER/INTB depending on devctl */
	break;

	case PCI_DEVICE_ID_TI_1251A:
	case PCI_DEVICE_ID_TI_1251B:
	case PCI_DEVICE_ID_TI_1450:
	/*
	* those have a pin for IRQSER/INTB plus INTB in MFUNC0
	* we alread probed the shared pin, now go for MFUNC0
	*/
	mfunc = (mfunc & ~TI122X_MFUNC0_MASK) \| TI125X_MFUNC0_INTB;
	break;

	default:
	mfunc = (mfunc & ~TI122X_MFUNC1_MASK) \| TI122X_MFUNC1_INTB;
	break;
	}

	/* write, probe */
	if (mfunc != mfunc_old) {
	config_writel(socket, TI122X_MFUNC, mfunc);

	pci_irq_status = yenta_probe_cb_irq(socket);
	if (pci_irq_status == 1) {
	printk(KERN_INFO "Yenta TI: socket %s parallel PCI interrupts ok\n",
	pci_name(socket->dev));
	goto out;
	}

	mfunc = mfunc_old;
	config_writel(socket, TI122X_MFUNC, mfunc);

	if (pci_irq_status == -1)
	goto out;
	}

	/* still nothing: set INTRTIE */
	if (ti12xx_tie_interrupts(socket, &old_irq)) {
	pci_irq_status = yenta_probe_cb_irq(socket);
	if (pci_irq_status == 1) {
	printk(KERN_INFO "Yenta TI: socket %s parallel PCI interrupts, tied ok\n",
	pci_name(socket->dev));
	goto out;
	}

	ti12xx_untie_interrupts(socket, old_irq);
	}
	}

	out:
	if (pci_irq_status < 1) {
	socket->cb_irq = 0;
	printk(KERN_INFO "Yenta TI: socket %s no PCI interrupts. Fish. Please report.\n",
	pci_name(socket->dev));
	}
	}

	static int ti12xx_override(struct yenta_socket *socket)
	{
	u32 val, val_orig;

	/* make sure that memory burst is active */
	val_orig = val = config_readl(socket, TI113X_SYSTEM_CONTROL);
	if (disable_clkrun && PCI_FUNC(socket->dev->devfn) == 0) {
	printk(KERN_INFO "Yenta: Disabling CLKRUN feature\n");
	val \|= TI113X_SCR_KEEPCLK;
	}
	if (!(val & TI122X_SCR_MRBURSTUP)) {
	printk(KERN_INFO "Yenta: Enabling burst memory read transactions\n");
	val \|= TI122X_SCR_MRBURSTUP;
	}
	if (val_orig != val)
	config_writel(socket, TI113X_SYSTEM_CONTROL, val);

	/*
	* for EnE bridges only: clear testbit TLTEnable. this makes the
	* RME Hammerfall DSP sound card working.
	*/
	if (socket->dev->vendor == PCI_VENDOR_ID_ENE) {
	u8 test_c9 = config_readb(socket, ENE_TEST_C9);
	test_c9 &= ~ENE_TEST_C9_TLTENABLE;
	config_writeb(socket, ENE_TEST_C9, test_c9);
	}

	/*
	* Yenta expects controllers to use CSCINT to route
	* CSC interrupts to PCI rather than INTVAL.
	*/
	val = config_readb(socket, TI1250_DIAGNOSTIC);
	printk(KERN_INFO "Yenta: Using %s to route CSC interrupts to PCI\n",
	(val & TI1250_DIAG_PCI_CSC) ? "CSCINT" : "INTVAL");
	printk(KERN_INFO "Yenta: Routing CardBus interrupts to %s\n",
	(val & TI1250_DIAG_PCI_IREQ) ? "PCI" : "ISA");

	/* do irqrouting, depending on function */
	if (PCI_FUNC(socket->dev->devfn) == 0)
	ti12xx_irqroute_func0(socket);
	else
	ti12xx_irqroute_func1(socket);

	return ti_override(socket);
	}


	static int ti1250_override(struct yenta_socket *socket)
	{
	u8 old, diag;

	old = config_readb(socket, TI1250_DIAGNOSTIC);
	diag = old & ~(TI1250_DIAG_PCI_CSC \| TI1250_DIAG_PCI_IREQ);
	if (socket->cb_irq)
	diag \|= TI1250_DIAG_PCI_CSC \| TI1250_DIAG_PCI_IREQ;

	if (diag != old) {
	printk(KERN_INFO "Yenta: adjusting diagnostic: %02x -> %02x\n",
	old, diag);
	config_writeb(socket, TI1250_DIAGNOSTIC, diag);
	}

	return ti12xx_override(socket);
	}

	#endif /* CONFIG_CARDBUS */

	#endif /* _LINUX_TI113X_H */