修改led为gpio

hc

2024-10-12 a5969cabbb4660eab42b6ef0412cbbd1200cf14d

 kernel/drivers/i2c/busses/i2c-piix4.c
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@@ -1,16 +1,8 @@
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+// SPDX-License-Identifier: GPL-2.0-or-later
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 /*
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     Copyright (c) 1998 - 2002 Frodo Looijaard <frodol@dds.nl> and
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     Philip Edelbrock <phil@netroedge.com>
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-    This program is free software; you can redistribute it and/or modify
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-    it under the terms of the GNU General Public License as published by
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-    the Free Software Foundation; either version 2 of the License, or
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-    (at your option) any later version.
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-
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-    This program is distributed in the hope that it will be useful,
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-    but WITHOUT ANY WARRANTY; without even the implied warranty of
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-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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-    GNU General Public License for more details.
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 */
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 /*
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@@ -19,6 +11,7 @@
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 	Serverworks OSB4, CSB5, CSB6, HT-1000, HT-1100
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 	ATI IXP200, IXP300, IXP400, SB600, SB700/SP5100, SB800
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 	AMD Hudson-2, ML, CZ
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+	Hygon CZ
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 	SMSC Victory66
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    Note: we assume there can only be one device, with one or more
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@@ -79,7 +72,8 @@
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 #define PIIX4_BLOCK_DATA	0x14
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 /* Multi-port constants */
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-#define PIIX4_MAX_ADAPTERS 4
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+#define PIIX4_MAX_ADAPTERS	4
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+#define HUDSON2_MAIN_PORTS	2 /* HUDSON2, KERNCZ reserves ports 3, 4 */
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 /* SB800 constants */
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 #define SB800_PIIX4_SMB_IDX		0xcd6
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@@ -289,7 +283,9 @@
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 	     PIIX4_dev->revision >= 0x41) ||
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 	    (PIIX4_dev->vendor == PCI_VENDOR_ID_AMD &&
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 	     PIIX4_dev->device == PCI_DEVICE_ID_AMD_KERNCZ_SMBUS &&
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-	     PIIX4_dev->revision >= 0x49))
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+	     PIIX4_dev->revision >= 0x49) ||
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+	    (PIIX4_dev->vendor == PCI_VENDOR_ID_HYGON &&
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+	     PIIX4_dev->device == PCI_DEVICE_ID_AMD_KERNCZ_SMBUS))
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 		smb_en = 0x00;
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 	else
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 		smb_en = (aux) ? 0x28 : 0x2c;
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@@ -361,7 +357,8 @@
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 		 piix4_smba, i2ccfg >> 4);
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 	/* Find which register is used for port selection */
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-	if (PIIX4_dev->vendor == PCI_VENDOR_ID_AMD) {
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+	if (PIIX4_dev->vendor == PCI_VENDOR_ID_AMD ||
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+	    PIIX4_dev->vendor == PCI_VENDOR_ID_HYGON) {
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 		if (PIIX4_dev->device == PCI_DEVICE_ID_AMD_KERNCZ_SMBUS ||
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 		    (PIIX4_dev->device == PCI_DEVICE_ID_AMD_HUDSON2_SMBUS &&
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 		     PIIX4_dev->revision >= 0x1F)) {
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@@ -792,6 +789,7 @@
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 	{ PCI_DEVICE(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_SBX00_SMBUS) },
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 	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_HUDSON2_SMBUS) },
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 	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_KERNCZ_SMBUS) },
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+	{ PCI_DEVICE(PCI_VENDOR_ID_HYGON, PCI_DEVICE_ID_AMD_KERNCZ_SMBUS) },
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 	{ PCI_DEVICE(PCI_VENDOR_ID_SERVERWORKS,
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 		     PCI_DEVICE_ID_SERVERWORKS_OSB4) },
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 	{ PCI_DEVICE(PCI_VENDOR_ID_SERVERWORKS,
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@@ -809,10 +807,12 @@
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 static struct i2c_adapter *piix4_main_adapters[PIIX4_MAX_ADAPTERS];
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 static struct i2c_adapter *piix4_aux_adapter;
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+static int piix4_adapter_count;
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 static int piix4_add_adapter(struct pci_dev *dev, unsigned short smba,
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 			     bool sb800_main, u8 port, bool notify_imc,
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-			     const char *name, struct i2c_adapter **padap)
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+			     u8 hw_port_nr, const char *name,
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+			     struct i2c_adapter **padap)
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 {
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 	struct i2c_adapter *adap;
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 	struct i2c_piix4_adapdata *adapdata;
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@@ -844,6 +844,12 @@
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 	/* set up the sysfs linkage to our parent device */
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 	adap->dev.parent = &dev->dev;
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+	if (has_acpi_companion(&dev->dev)) {
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+		acpi_preset_companion(&adap->dev,
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+				      ACPI_COMPANION(&dev->dev),
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+				      hw_port_nr);
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+	}
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+
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 	snprintf(adap->name, sizeof(adap->name),
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 		"SMBus PIIX4 adapter%s at %04x", name, smba);
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@@ -868,8 +874,19 @@
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 	int port;
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 	int retval;
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-	for (port = 0; port < PIIX4_MAX_ADAPTERS; port++) {
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+	if (dev->device == PCI_DEVICE_ID_AMD_KERNCZ_SMBUS ||
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+	    (dev->device == PCI_DEVICE_ID_AMD_HUDSON2_SMBUS &&
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+	     dev->revision >= 0x1F)) {
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+		piix4_adapter_count = HUDSON2_MAIN_PORTS;
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+	} else {
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+		piix4_adapter_count = PIIX4_MAX_ADAPTERS;
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+	}
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+
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+	for (port = 0; port < piix4_adapter_count; port++) {
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+		u8 hw_port_nr = port == 0 ? 0 : port + 1;
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+
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 		retval = piix4_add_adapter(dev, smba, true, port, notify_imc,
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+					   hw_port_nr,
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 					   piix4_main_port_names_sb800[port],
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 					   &piix4_main_adapters[port]);
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 		if (retval < 0)
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@@ -902,11 +919,13 @@
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 	if ((dev->vendor == PCI_VENDOR_ID_ATI &&
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 	     dev->device == PCI_DEVICE_ID_ATI_SBX00_SMBUS &&
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 	     dev->revision >= 0x40) ||
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-	    dev->vendor == PCI_VENDOR_ID_AMD) {
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+	    dev->vendor == PCI_VENDOR_ID_AMD ||
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+	    dev->vendor == PCI_VENDOR_ID_HYGON) {
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 		bool notify_imc = false;
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 		is_sb800 = true;
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-		if (dev->vendor == PCI_VENDOR_ID_AMD &&
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+		if ((dev->vendor == PCI_VENDOR_ID_AMD ||
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+		     dev->vendor == PCI_VENDOR_ID_HYGON) &&
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 		    dev->device == PCI_DEVICE_ID_AMD_KERNCZ_SMBUS) {
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 			u8 imc;
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@@ -938,10 +957,11 @@
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 			return retval;
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 		/* Try to register main SMBus adapter, give up if we can't */
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-		retval = piix4_add_adapter(dev, retval, false, 0, false, "",
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-					   &piix4_main_adapters[0]);
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+		retval = piix4_add_adapter(dev, retval, false, 0, false, 0,
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+					   "", &piix4_main_adapters[0]);
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 		if (retval < 0)
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 			return retval;
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+		piix4_adapter_count = 1;
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 	}
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 	/* Check for auxiliary SMBus on some AMD chipsets */
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@@ -966,7 +986,7 @@
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 	if (retval > 0) {
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 		/* Try to add the aux adapter if it exists,
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 		 * piix4_add_adapter will clean up if this fails */
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-		piix4_add_adapter(dev, retval, false, 0, false,
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+		piix4_add_adapter(dev, retval, false, 0, false, 1,
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 				  is_sb800 ? piix4_aux_port_name_sb800 : "",
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 				  &piix4_aux_adapter);
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 	}
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@@ -989,7 +1009,7 @@
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 static void piix4_remove(struct pci_dev *dev)
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 {
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-	int port = PIIX4_MAX_ADAPTERS;
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+	int port = piix4_adapter_count;
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 	while (--port >= 0) {
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 		if (piix4_main_adapters[port]) {
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@@ -1013,7 +1033,7 @@
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 module_pci_driver(piix4_driver);
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-MODULE_AUTHOR("Frodo Looijaard <frodol@dds.nl> and "
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-		"Philip Edelbrock <phil@netroedge.com>");
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+MODULE_AUTHOR("Frodo Looijaard <frodol@dds.nl>");
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+MODULE_AUTHOR("Philip Edelbrock <phil@netroedge.com>");
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 MODULE_DESCRIPTION("PIIX4 SMBus driver");
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 MODULE_LICENSE("GPL");