1 // SPDX-License-Identifier: GPL-2.0-or-later
3     Copyright (c) 1998 - 2002  Frodo Looijaard <frodol@dds.nl>,
6     Copyright (C) 2007 - 2014  Jean Delvare <jdelvare@suse.de>
17  * Chip name			PCI ID	size	PEC	buffer	call	read
18  * ---------------------------------------------------------------------------
43  * Lynx Point-LP (PCH)		0x9c22	32	hard	yes	yes	yes
51  * Wildcat Point-LP (PCH)	0x9ca2	32	hard	yes	yes	yes
54  * Sunrise Point-H (PCH) 	0xa123  32	hard	yes	yes	yes
55  * Sunrise Point-LP (PCH)	0x9d23	32	hard	yes	yes	yes
61  * Kaby Lake PCH-H (PCH)	0xa2a3	32	hard	yes	yes	yes
62  * Gemini Lake (SOC)		0x31d4	32	hard	yes	yes	yes
63  * Cannon Lake-H (PCH)		0xa323	32	hard	yes	yes	yes
64  * Cannon Lake-LP (PCH)		0x9da3	32	hard	yes	yes	yes
66  * Ice Lake-LP (PCH)		0x34a3	32	hard	yes	yes	yes
67  * Ice Lake-N (PCH)		0x38a3	32	hard	yes	yes	yes
69  * Comet Lake-H (PCH)		0x06a3	32	hard	yes	yes	yes
71  * Tiger Lake-LP (PCH)		0xa0a3	32	hard	yes	yes	yes
72  * Tiger Lake-H (PCH)		0x43a3	32	hard	yes	yes	yes
74  * Comet Lake-V (PCH)		0xa3a3	32	hard	yes	yes	yes
75  * Alder Lake-S (PCH)		0x7aa3	32	hard	yes	yes	yes
76  * Alder Lake-P (PCH)		0x51a3	32	hard	yes	yes	yes
77  * Alder Lake-M (PCH)		0x54a3	32	hard	yes	yes	yes
78  * Raptor Lake-S (PCH)		0x7a23	32	hard	yes	yes	yes
79  * Meteor Lake-P (SOC)		0x7e22	32	hard	yes	yes	yes
80  * Meteor Lake SoC-S (SOC)	0xae22	32	hard	yes	yes	yes
81  * Meteor Lake PCH-S (PCH)	0x7f23	32	hard	yes	yes	yes
83  * Arrow Lake-H (SOC)		0x7722	32	hard	yes	yes	yes
84  * Panther Lake-H (SOC)		0xe322	32	hard	yes	yes	yes
85  * Panther Lake-P (SOC)		0xe422	32	hard	yes	yes	yes
86  * Wildcat Lake-U (SOC)		0x4d22	32	hard	yes	yes	yes
98  * See the file Documentation/i2c/busses/i2c-i801.rst for details.
105 #include <linux/pci.h>
112 #include <linux/i2c-mux.h>
113 #include <linux/i2c-smbus.h>
129 #include <linux/platform_data/i2c-mux-gpio.h>
133 #define SMBHSTSTS(p)	(0 + (p)->smba)
134 #define SMBHSTCNT(p)	(2 + (p)->smba)
135 #define SMBHSTCMD(p)	(3 + (p)->smba)
136 #define SMBHSTADD(p)	(4 + (p)->smba)
137 #define SMBHSTDAT0(p)	(5 + (p)->smba)
138 #define SMBHSTDAT1(p)	(6 + (p)->smba)
139 #define SMBBLKDAT(p)	(7 + (p)->smba)
140 #define SMBPEC(p)	(8 + (p)->smba)		/* ICH3 and later */
141 #define SMBAUXSTS(p)	(12 + (p)->smba)	/* ICH4 and later */
142 #define SMBAUXCTL(p)	(13 + (p)->smba)	/* ICH4 and later */
143 #define SMBSLVSTS(p)	(16 + (p)->smba)	/* ICH3 and later */
144 #define SMBSLVCMD(p)	(17 + (p)->smba)	/* ICH3 and later */
145 #define SMBNTFDADD(p)	(20 + (p)->smba)	/* ICH3 and later */
147 /* PCI Address Constants */
276 	unsigned gpios[2];		/* Relative to gpio_chip->base */
293 	/* Command state used by isr for byte-by-byte block transactions */
346 	unsigned long timeout = jiffies + priv->adapter.timeout;  in i801_wait_intr()
358 	return -ETIMEDOUT;  in i801_wait_intr()
364 	unsigned long timeout = jiffies + priv->adapter.timeout;  in i801_wait_byte_done()
374 	return -ETIMEDOUT;  in i801_wait_byte_done()
382 		pci_err(priv->pci_dev, "Illegal SMBus block read size %u\n", len);  in i801_get_block_len()
383 		return -EPROTO;  in i801_get_block_len()
393 	if (!(priv->features & FEATURE_SMBUS_PEC))  in i801_check_and_clear_pec_error()
399 		return -EBADMSG;  in i801_check_and_clear_pec_error()
406    Return 0 if it is, -EBUSY if it is not. */
413 		pci_err(priv->pci_dev, "SMBus is busy, can't use it!\n");  in i801_check_pre()
414 		return -EBUSY;  in i801_check_pre()
419 		pci_dbg(priv->pci_dev, "Clearing status flags (%02x)\n", status);  in i801_check_pre()
432 		pci_dbg(priv->pci_dev, "Clearing aux status flag CRCE\n");  in i801_check_pre()
452 			pci_dbg(priv->pci_dev, "Failed terminating the transaction\n");  in i801_check_post()
453 		return -ETIMEDOUT;  in i801_check_post()
457 		result = -EIO;  in i801_check_post()
458 		pci_err(priv->pci_dev, "Transaction failed\n");  in i801_check_post()
478 			pci_dbg(priv->pci_dev, "PEC error\n");  in i801_check_post()
480 			result = -ENXIO;  in i801_check_post()
481 			pci_dbg(priv->pci_dev, "No response\n");  in i801_check_post()
485 		result = -EAGAIN;  in i801_check_post()
486 		pci_dbg(priv->pci_dev, "Lost arbitration\n");  in i801_check_post()
495 	const struct i2c_adapter *adap = &priv->adapter;  in i801_transaction()
497 	if (priv->features & FEATURE_IRQ) {  in i801_transaction()
498 		reinit_completion(&priv->done);  in i801_transaction()
501 		result = wait_for_completion_timeout(&priv->done, adap->timeout);  in i801_transaction()
502 		return result ? priv->status : -ETIMEDOUT;  in i801_transaction()
524 		return -EOPNOTSUPP;  in i801_block_transaction_by_block()
531 		len = data->block[0];  in i801_block_transaction_by_block()
534 		iowrite8_rep(SMBBLKDAT(priv), data->block + 1, len);  in i801_block_transaction_by_block()
549 		data->block[0] = len;  in i801_block_transaction_by_block()
551 		ioread8_rep(SMBBLKDAT(priv), data->block + 1, len);  in i801_block_transaction_by_block()
560 	if (priv->is_read) {  in i801_isr_byte_done()
566 		if (priv->len == SMBUS_LEN_SENTINEL) {  in i801_isr_byte_done()
567 			priv->len = i801_get_block_len(priv);  in i801_isr_byte_done()
568 			if (priv->len < 0)  in i801_isr_byte_done()
570 				priv->len = I2C_SMBUS_BLOCK_MAX;  in i801_isr_byte_done()
572 			priv->data[-1] = priv->len;  in i801_isr_byte_done()
576 		if (priv->count < priv->len)  in i801_isr_byte_done()
577 			priv->data[priv->count++] = ioread8(SMBBLKDAT(priv));  in i801_isr_byte_done()
579 			pci_dbg(priv->pci_dev, "Discarding extra byte on block read\n");  in i801_isr_byte_done()
582 		if (priv->count == priv->len - 1)  in i801_isr_byte_done()
583 			iowrite8(priv->cmd | SMBHSTCNT_LAST_BYTE,  in i801_isr_byte_done()
585 	} else if (priv->count < priv->len - 1) {  in i801_isr_byte_done()
587 		iowrite8(priv->data[++priv->count], SMBBLKDAT(priv));  in i801_isr_byte_done()
598 	 * With the tested platforms, reading SMBNTFDDAT (22 + (p)->smba)  in i801_host_notify_isr()
602 	i2c_handle_smbus_host_notify(&priv->adapter, addr);  in i801_host_notify_isr()
613  *      INTR - Success
614  *      DEV_ERR - Invalid command, NAK or communication timeout
615  *      BUS_ERR - SMI# transaction collision
616  *      FAILED - transaction was canceled due to a KILL request
617  *    When any of these occur, update ->status and signal completion.
619  * 2) For byte-by-byte (I2C read/write) transactions, one BYTE_DONE interrupt
620  *    occurs for each byte of a byte-by-byte to prepare the next byte.
631 	pci_read_config_word(priv->pci_dev, PCI_STATUS, &pcists);  in i801_isr()
635 	if (priv->features & FEATURE_HOST_NOTIFY) {  in i801_isr()
655 		priv->status = status & STATUS_ERROR_FLAGS;  in i801_isr()
656 		complete(&priv->done);  in i801_isr()
663  * For "byte-by-byte" block transactions:
675 	const struct i2c_adapter *adap = &priv->adapter;  in i801_block_transaction_byte_by_byte()
678 		return -EOPNOTSUPP;  in i801_block_transaction_byte_by_byte()
680 	len = data->block[0];  in i801_block_transaction_byte_by_byte()
684 		iowrite8(data->block[1], SMBBLKDAT(priv));  in i801_block_transaction_byte_by_byte()
693 	if (priv->features & FEATURE_IRQ) {  in i801_block_transaction_byte_by_byte()
694 		priv->is_read = (read_write == I2C_SMBUS_READ);  in i801_block_transaction_byte_by_byte()
695 		if (len == 1 && priv->is_read)  in i801_block_transaction_byte_by_byte()
697 		priv->cmd = smbcmd | SMBHSTCNT_INTREN;  in i801_block_transaction_byte_by_byte()
698 		priv->len = len;  in i801_block_transaction_byte_by_byte()
699 		priv->count = 0;  in i801_block_transaction_byte_by_byte()
700 		priv->data = &data->block[1];  in i801_block_transaction_byte_by_byte()
702 		reinit_completion(&priv->done);  in i801_block_transaction_byte_by_byte()
703 		iowrite8(priv->cmd | SMBHSTCNT_START, SMBHSTCNT(priv));  in i801_block_transaction_byte_by_byte()
704 		result = wait_for_completion_timeout(&priv->done, adap->timeout);  in i801_block_transaction_byte_by_byte()
705 		return result ? priv->status : -ETIMEDOUT;  in i801_block_transaction_byte_by_byte()
731 				return -EPROTO;  in i801_block_transaction_byte_by_byte()
733 			data->block[0] = len;  in i801_block_transaction_byte_by_byte()
737 			data->block[i] = ioread8(SMBBLKDAT(priv));  in i801_block_transaction_byte_by_byte()
738 			if (i == len - 1)  in i801_block_transaction_byte_by_byte()
743 			iowrite8(data->block[i+1], SMBBLKDAT(priv));  in i801_block_transaction_byte_by_byte()
777 			iowrite8(data->byte, SMBHSTDAT0(priv));  in i801_simple_transaction()
784 			iowrite8(data->word & 0xff, SMBHSTDAT0(priv));  in i801_simple_transaction()
785 			iowrite8((data->word & 0xff00) >> 8, SMBHSTDAT1(priv));  in i801_simple_transaction()
792 		iowrite8(data->word & 0xff, SMBHSTDAT0(priv));  in i801_simple_transaction()
793 		iowrite8((data->word & 0xff00) >> 8, SMBHSTDAT1(priv));  in i801_simple_transaction()
799 		pci_err(priv->pci_dev, "Unsupported transaction %d\n", command);  in i801_simple_transaction()
800 		return -EOPNOTSUPP;  in i801_simple_transaction()
810 		data->byte = ioread8(SMBHSTDAT0(priv));  in i801_simple_transaction()
814 		data->word = ioread8(SMBHSTDAT0(priv)) +  in i801_simple_transaction()
827 		data->block[0] = SMBUS_LEN_SENTINEL;  in i801_smbus_block_transaction()
828 	else if (data->block[0] < 1 || data->block[0] > I2C_SMBUS_BLOCK_MAX)  in i801_smbus_block_transaction()
829 		return -EPROTO;  in i801_smbus_block_transaction()
838 	if (priv->features & FEATURE_BLOCK_BUFFER)  in i801_smbus_block_transaction()
850 	if (data->block[0] < 1 || data->block[0] > I2C_SMBUS_BLOCK_MAX)  in i801_i2c_block_transaction()
851 		return -EPROTO;  in i801_i2c_block_transaction()
858 			priv->original_hstcfg & SMBHSTCFG_SPD_WD ? read_write : I2C_SMBUS_WRITE);  in i801_i2c_block_transaction()
868 		pci_read_config_byte(priv->pci_dev, SMBHSTCFG, &hostc);  in i801_i2c_block_transaction()
869 		pci_write_config_byte(priv->pci_dev, SMBHSTCFG, hostc | SMBHSTCFG_I2C_EN);  in i801_i2c_block_transaction()
870 	} else if (!(priv->features & FEATURE_I2C_BLOCK_READ)) {  in i801_i2c_block_transaction()
871 		pci_err(priv->pci_dev, "I2C block read is unsupported!\n");  in i801_i2c_block_transaction()
872 		return -EOPNOTSUPP;  in i801_i2c_block_transaction()
880 		pci_write_config_byte(priv->pci_dev, SMBHSTCFG, hostc);  in i801_i2c_block_transaction()
893 	if (priv->acpi_reserved)  in i801_access()
894 		return -EBUSY;  in i801_access()
896 	pm_runtime_get_sync(&priv->pci_dev->dev);  in i801_access()
902 	hwpec = (priv->features & FEATURE_SMBUS_PEC) && (flags & I2C_CLIENT_PEC)  in i801_access()
933 	pm_runtime_put_autosuspend(&priv->pci_dev->dev);  in i801_access()
946 	       ((priv->features & FEATURE_SMBUS_PEC) ? I2C_FUNC_SMBUS_PEC : 0) |  in i801_func()
947 	       ((priv->features & FEATURE_BLOCK_PROC) ?  in i801_func()
949 	       ((priv->features & FEATURE_I2C_BLOCK_READ) ?  in i801_func()
951 	       ((priv->features & FEATURE_HOST_NOTIFY) ?  in i801_func()
959 	if (!(priv->features & FEATURE_HOST_NOTIFY))  in i801_enable_host_notify()
968 	       priv->original_slvcmd, SMBSLVCMD(priv));  in i801_enable_host_notify()
976 	if (!(priv->features & FEATURE_HOST_NOTIFY))  in i801_disable_host_notify()
979 	iowrite8(priv->original_slvcmd, SMBSLVCMD(priv));  in i801_disable_host_notify()
1064 MODULE_DEVICE_TABLE(pci, i801_ids);
1077 				    sizeof(signature)-1))  in bios_signature()
1138 	if (dm->type != DMI_ENTRY_ONBOARD_DEVICE)  in dmi_check_onboard_devices()
1141 	count = (dm->length - sizeof(struct dmi_header)) / 2;  in dmi_check_onboard_devices()
1144 		const char *name = ((char *) dm) + dm->length;  in dmi_check_onboard_devices()
1150 		s--;  in dmi_check_onboard_devices()
1153 			s--;  in dmi_check_onboard_devices()
1166 	if (priv->features & FEATURE_IDF)  in i801_probe_optional_targets()
1175 		i2c_new_client_device(&priv->adapter, &info);  in i801_probe_optional_targets()
1179 		dmi_walk(dmi_check_onboard_devices, &priv->adapter);  in i801_probe_optional_targets()
1183 	if (!priv->mux_pdev)  in i801_probe_optional_targets()
1185 		i2c_register_spd_write_enable(&priv->adapter);  in i801_probe_optional_targets()
1213 			DMI_MATCH(DMI_BOARD_NAME, "Z8NA-D6(C)"),
1220 			DMI_MATCH(DMI_BOARD_NAME, "Z8P(N)E-D12(X)"),
1227 			DMI_MATCH(DMI_BOARD_NAME, "Z8NH-D12"),
1234 			DMI_MATCH(DMI_BOARD_NAME, "Z8PH-D12/IFB"),
1241 			DMI_MATCH(DMI_BOARD_NAME, "Z8NR-D12"),
1248 			DMI_MATCH(DMI_BOARD_NAME, "Z8P(N)H-D12"),
1255 			DMI_MATCH(DMI_BOARD_NAME, "Z8PG-D18"),
1262 			DMI_MATCH(DMI_BOARD_NAME, "Z8PE-D18"),
1269 			DMI_MATCH(DMI_BOARD_NAME, "Z8PS-D12"),
1283 	    dev->type != &i2c_adapter_type ||  in i801_notifier_call()
1284 	    i2c_root_adapter(dev) != &priv->adapter)  in i801_notifier_call()
1296 	struct device *dev = &priv->adapter.dev;  in i801_add_mux()
1307 	mux_config = id->driver_data;  in i801_add_mux()
1311 	gpio_data.parent = priv->adapter.nr;  in i801_add_mux()
1312 	gpio_data.values = mux_config->values;  in i801_add_mux()
1313 	gpio_data.n_values = mux_config->n_values;  in i801_add_mux()
1318 			      struct_size(lookup, table, mux_config->n_gpios + 1),  in i801_add_mux()
1322 	lookup->dev_id = "i2c-mux-gpio";  in i801_add_mux()
1323 	for (i = 0; i < mux_config->n_gpios; i++)  in i801_add_mux()
1324 		lookup->table[i] = GPIO_LOOKUP(mux_config->gpio_chip,  in i801_add_mux()
1325 					       mux_config->gpios[i], "mux", 0);  in i801_add_mux()
1328 	priv->mux_notifier_block.notifier_call = i801_notifier_call;  in i801_add_mux()
1329 	if (bus_register_notifier(&i2c_bus_type, &priv->mux_notifier_block))  in i801_add_mux()
1338 	priv->mux_pdev = platform_device_register_data(dev, "i2c-mux-gpio",  in i801_add_mux()
1341 	if (IS_ERR(priv->mux_pdev)) {  in i801_add_mux()
1344 		dev_err(dev, "Failed to register i2c-mux-gpio device\n");  in i801_add_mux()
1346 		priv->lookup = lookup;  in i801_add_mux()
1352 	bus_unregister_notifier(&i2c_bus_type, &priv->mux_notifier_block);  in i801_del_mux()
1353 	platform_device_unregister(priv->mux_pdev);  in i801_del_mux()
1354 	gpiod_remove_lookup_table(priv->lookup);  in i801_del_mux()
1377 	ret = p2sb_bar(pci_dev->bus, 0, res);  in i801_add_tco_spt()
1381 	if (pci_dev->device == PCI_DEVICE_ID_INTEL_DNV_SMBUS)  in i801_add_tco_spt()
1382 		res->start += SBREG_SMBCTRL_DNV;  in i801_add_tco_spt()
1384 		res->start += SBREG_SMBCTRL;  in i801_add_tco_spt()
1386 	res->end = res->start + 3;  in i801_add_tco_spt()
1388 	return platform_device_register_resndata(&pci_dev->dev, "iTCO_wdt", -1,  in i801_add_tco_spt()
1400 	return platform_device_register_resndata(&pci_dev->dev, "iTCO_wdt", -1,  in i801_add_tco_cnl()
1406 	struct pci_dev *pci_dev = priv->pci_dev;  in i801_add_tco()
1414 	if (!(priv->features & (FEATURE_TCO_SPT | FEATURE_TCO_CNL)))  in i801_add_tco()
1428 	res->start = tco_base & ~1;  in i801_add_tco()
1429 	res->end = res->start + 32 - 1;  in i801_add_tco()
1430 	res->flags = IORESOURCE_IO;  in i801_add_tco()
1432 	if (priv->features & FEATURE_TCO_CNL)  in i801_add_tco()
1433 		priv->tco_pdev = i801_add_tco_cnl(pci_dev, tco_res);  in i801_add_tco()
1435 		priv->tco_pdev = i801_add_tco_spt(pci_dev, tco_res);  in i801_add_tco()
1437 	if (IS_ERR(priv->tco_pdev))  in i801_add_tco()
1445 	return address >= pci_resource_start(priv->pci_dev, SMBBAR) &&  in i801_acpi_is_smbus_ioport()
1446 	       address <= pci_resource_end(priv->pci_dev, SMBBAR);  in i801_acpi_is_smbus_ioport()
1454 	struct pci_dev *pdev = priv->pci_dev;  in i801_acpi_io_handler()
1462 	i2c_lock_bus(&priv->adapter, I2C_LOCK_SEGMENT);  in i801_acpi_io_handler()
1464 	if (!priv->acpi_reserved && i801_acpi_is_smbus_ioport(priv, address)) {  in i801_acpi_io_handler()
1465 		priv->acpi_reserved = true;  in i801_acpi_io_handler()
1474 		pm_runtime_get_sync(&pdev->dev);  in i801_acpi_io_handler()
1482 	i2c_unlock_bus(&priv->adapter, I2C_LOCK_SEGMENT);  in i801_acpi_io_handler()
1489 	acpi_handle ah = ACPI_HANDLE(&priv->pci_dev->dev);  in i801_acpi_probe()
1497 	return acpi_check_resource_conflict(&priv->pci_dev->resource[SMBBAR]);  in i801_acpi_probe()
1502 	acpi_handle ah = ACPI_HANDLE(&priv->pci_dev->dev);  in i801_acpi_remove()
1513 	unsigned char hstcfg = priv->original_hstcfg;  in i801_setup_hstcfg()
1517 	pci_write_config_byte(priv->pci_dev, SMBHSTCFG, hstcfg);  in i801_setup_hstcfg()
1522 	iowrite8(priv->original_hstcnt, SMBHSTCNT(priv));  in i801_restore_regs()
1523 	pci_write_config_byte(priv->pci_dev, SMBHSTCFG, priv->original_hstcfg);  in i801_restore_regs()
1531 	priv = devm_kzalloc(&dev->dev, sizeof(*priv), GFP_KERNEL);  in i801_probe()
1533 		return -ENOMEM;  in i801_probe()
1535 	i2c_set_adapdata(&priv->adapter, priv);  in i801_probe()
1536 	priv->adapter.owner = THIS_MODULE;  in i801_probe()
1537 	priv->adapter.class = I2C_CLASS_HWMON;  in i801_probe()
1538 	priv->adapter.algo = &smbus_algorithm;  in i801_probe()
1539 	priv->adapter.dev.parent = &dev->dev;  in i801_probe()
1540 	acpi_use_parent_companion(&priv->adapter.dev);  in i801_probe()
1541 	priv->adapter.retries = 3;  in i801_probe()
1543 	priv->pci_dev = dev;  in i801_probe()
1544 	priv->features = id->driver_data;  in i801_probe()
1548 		if (priv->features & disable_features & (1 << i))  in i801_probe()
1551 	priv->features &= ~disable_features;  in i801_probe()
1554 	if (!(priv->features & FEATURE_BLOCK_BUFFER))  in i801_probe()
1555 		priv->features &= ~FEATURE_BLOCK_PROC;  in i801_probe()
1563 		pci_err(dev, "Failed to enable SMBus PCI device (%d)\n", err);  in i801_probe()
1570 		return -ENODEV;  in i801_probe()
1574 		return -ENODEV;  in i801_probe()
1579 	priv->smba = pcim_iomap_region(dev, bar, DRV_NAME);  in i801_probe()
1580 	if (IS_ERR(priv->smba)) {  in i801_probe()
1584 		return PTR_ERR(priv->smba);  in i801_probe()
1587 	pci_read_config_byte(dev, SMBHSTCFG, &priv->original_hstcfg);  in i801_probe()
1589 	if (!(priv->original_hstcfg & SMBHSTCFG_HST_EN))  in i801_probe()
1592 	if (priv->original_hstcfg & SMBHSTCFG_SMB_SMI_EN) {  in i801_probe()
1595 		priv->features &= ~FEATURE_IRQ;  in i801_probe()
1597 	if (priv->original_hstcfg & SMBHSTCFG_SPD_WD)  in i801_probe()
1601 	if (priv->features & (FEATURE_SMBUS_PEC | FEATURE_BLOCK_BUFFER))  in i801_probe()
1606 	priv->adapter.timeout = HZ / 5;  in i801_probe()
1608 	if (dev->irq == IRQ_NOTCONNECTED)  in i801_probe()
1609 		priv->features &= ~FEATURE_IRQ;  in i801_probe()
1611 	if (priv->features & FEATURE_IRQ) {  in i801_probe()
1615 		pci_read_config_word(priv->pci_dev, PCI_STATUS, &pcists);  in i801_probe()
1620 	if (priv->features & FEATURE_IRQ) {  in i801_probe()
1621 		init_completion(&priv->done);  in i801_probe()
1623 		err = devm_request_irq(&dev->dev, dev->irq, i801_isr,  in i801_probe()
1626 			pci_err(dev, "Failed to allocate irq %d: %d\n", dev->irq, err);  in i801_probe()
1627 			priv->features &= ~FEATURE_IRQ;  in i801_probe()
1631 		 priv->features & FEATURE_IRQ ? "PCI interrupt" : "polling");  in i801_probe()
1634 	if (!(priv->features & FEATURE_IRQ))  in i801_probe()
1635 		priv->features &= ~FEATURE_HOST_NOTIFY;  in i801_probe()
1638 	priv->original_hstcnt = ioread8(SMBHSTCNT(priv)) & ~SMBHSTCNT_KILL;  in i801_probe()
1639 	if (priv->features & FEATURE_HOST_NOTIFY)  in i801_probe()
1640 		priv->original_slvcmd = ioread8(SMBSLVCMD(priv));  in i801_probe()
1648 	snprintf(priv->adapter.name, sizeof(priv->adapter.name),  in i801_probe()
1650 		 (priv->features & FEATURE_IDF) ? "I801 IDF" : "I801",  in i801_probe()
1653 	err = i2c_add_adapter(&priv->adapter);  in i801_probe()
1655 		platform_device_unregister(priv->tco_pdev);  in i801_probe()
1661 	i801_enable_host_notify(&priv->adapter);  in i801_probe()
1663 	/* We ignore errors - multiplexing is optional */  in i801_probe()
1669 	dev_pm_set_driver_flags(&dev->dev, DPM_FLAG_NO_DIRECT_COMPLETE);  in i801_probe()
1670 	pm_runtime_set_autosuspend_delay(&dev->dev, 1000);  in i801_probe()
1671 	pm_runtime_use_autosuspend(&dev->dev);  in i801_probe()
1672 	pm_runtime_put_autosuspend(&dev->dev);  in i801_probe()
1673 	pm_runtime_allow(&dev->dev);  in i801_probe()
1684 	i2c_del_adapter(&priv->adapter);  in i801_remove()
1687 	platform_device_unregister(priv->tco_pdev);  in i801_remove()
1690 	if (!priv->acpi_reserved)  in i801_remove()
1691 		pm_runtime_get_noresume(&dev->dev);  in i801_remove()
1697 	 * some systems during power-off (eg. Fujitsu-Siemens Lifebook E8010)  in i801_remove()
1714 	i2c_mark_adapter_suspended(&priv->adapter);  in i801_suspend()
1725 	i801_enable_host_notify(&priv->adapter);  in i801_resume()
1726 	i2c_mark_adapter_resumed(&priv->adapter);  in i801_resume()