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hc
2023-12-11 072de836f53be56a70cecf70b43ae43b7ce17376 
 kernel/drivers/misc/pch_phub.c
....@@ -1,18 +1,6 @@
1
+// SPDX-License-Identifier: GPL-2.0-only
12 /*
23  * Copyright (C) 2011 LAPIS Semiconductor Co., Ltd.
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- *
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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; version 2 of the License.
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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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- * You should have received a copy of the GNU General Public License
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- * along with this program; if not, write to the Free Software
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- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307, USA.
164  */
175 
186 #include <linux/module.h>
....@@ -147,6 +135,7 @@
147135 
148136 /**
149137  * pch_phub_read_modify_write_reg() - Reading modifying and writing register
138
+ * @chip:		Pointer to the PHUB register structure
150139  * @reg_addr_offset:	Register offset address value.
151140  * @data:		Writing value.
152141  * @mask:		Mask value.
....@@ -159,9 +148,8 @@
159148 	iowrite32(((ioread32(reg_addr) & ~mask)) | data, reg_addr);
160149 }
161150 
162
-#ifdef CONFIG_PM
163151 /* pch_phub_save_reg_conf - saves register configuration */
164
-static void pch_phub_save_reg_conf(struct pci_dev *pdev)
152
+static void __maybe_unused pch_phub_save_reg_conf(struct pci_dev *pdev)
165153 {
166154 	unsigned int i;
167155 	struct pch_phub_reg *chip = pci_get_drvdata(pdev);
....@@ -222,7 +210,7 @@
222210 }
223211 
224212 /* pch_phub_restore_reg_conf - restore register configuration */
225
-static void pch_phub_restore_reg_conf(struct pci_dev *pdev)
213
+static void __maybe_unused pch_phub_restore_reg_conf(struct pci_dev *pdev)
226214 {
227215 	unsigned int i;
228216 	struct pch_phub_reg *chip = pci_get_drvdata(pdev);
....@@ -282,10 +270,10 @@
282270 	if ((chip->ioh_type == 2) || (chip->ioh_type == 4))
283271 		iowrite32(chip->funcsel_reg, p + FUNCSEL_REG_OFFSET);
284272 }
285
-#endif
286273 
287274 /**
288275  * pch_phub_read_serial_rom() - Reading Serial ROM
276
+ * @chip:		Pointer to the PHUB register structure
289277  * @offset_address:	Serial ROM offset address to read.
290278  * @data:		Read buffer for specified Serial ROM value.
291279  */
....@@ -300,6 +288,7 @@
300288 
301289 /**
302290  * pch_phub_write_serial_rom() - Writing Serial ROM
291
+ * @chip:		Pointer to the PHUB register structure
303292  * @offset_address:	Serial ROM offset address.
304293  * @data:		Serial ROM value to write.
305294  */
....@@ -338,6 +327,7 @@
338327 
339328 /**
340329  * pch_phub_read_serial_rom_val() - Read Serial ROM value
330
+ * @chip:		Pointer to the PHUB register structure
341331  * @offset_address:	Serial ROM address offset value.
342332  * @data:		Serial ROM value to read.
343333  */
....@@ -354,6 +344,7 @@
354344 
355345 /**
356346  * pch_phub_write_serial_rom_val() - writing Serial ROM value
347
+ * @chip:		Pointer to the PHUB register structure
357348  * @offset_address:	Serial ROM address offset value.
358349  * @data:		Serial ROM value.
359350  */
....@@ -455,7 +446,7 @@
455446 
456447 /**
457448  * pch_phub_read_gbe_mac_addr() - Read Gigabit Ethernet MAC address
458
- * @offset_address:	Gigabit Ethernet MAC address offset value.
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+ * @chip:		Pointer to the PHUB register structure
459450  * @data:		Buffer of the Gigabit Ethernet MAC address value.
460451  */
461452 static void pch_phub_read_gbe_mac_addr(struct pch_phub_reg *chip, u8 *data)
....@@ -467,7 +458,7 @@
467458 
468459 /**
469460  * pch_phub_write_gbe_mac_addr() - Write MAC address
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- * @offset_address:	Gigabit Ethernet MAC address offset value.
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+ * @chip:		Pointer to the PHUB register structure
471462  * @data:		Gigabit Ethernet MAC address value.
472463  */
473464 static int pch_phub_write_gbe_mac_addr(struct pch_phub_reg *chip, u8 *data)
....@@ -847,48 +838,19 @@
847838 	kfree(chip);
848839 }
849840 
850
-#ifdef CONFIG_PM
851
-
852
-static int pch_phub_suspend(struct pci_dev *pdev, pm_message_t state)
841
+static int __maybe_unused pch_phub_suspend(struct device *dev_d)
853842 {
854
-	int ret;
855
-
856
-	pch_phub_save_reg_conf(pdev);
857
-	ret = pci_save_state(pdev);
858
-	if (ret) {
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-		dev_err(&pdev->dev,
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-			" %s -pci_save_state returns %d\n", __func__, ret);
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-		return ret;
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-	}
863
-	pci_enable_wake(pdev, PCI_D3hot, 0);
864
-	pci_disable_device(pdev);
865
-	pci_set_power_state(pdev, pci_choose_state(pdev, state));
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+	device_wakeup_disable(dev_d);
866844 
867845 	return 0;
868846 }
869847 
870
-static int pch_phub_resume(struct pci_dev *pdev)
848
+static int __maybe_unused pch_phub_resume(struct device *dev_d)
871849 {
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-	int ret;
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-
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-	pci_set_power_state(pdev, PCI_D0);
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-	pci_restore_state(pdev);
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-	ret = pci_enable_device(pdev);
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-	if (ret) {
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-		dev_err(&pdev->dev,
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-		"%s-pci_enable_device failed(ret=%d) ", __func__, ret);
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-		return ret;
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-	}
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-
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-	pci_enable_wake(pdev, PCI_D3hot, 0);
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-	pch_phub_restore_reg_conf(pdev);
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+	device_wakeup_disable(dev_d);
885851 
886852 	return 0;
887853 }
888
-#else
889
-#define pch_phub_suspend NULL
890
-#define pch_phub_resume NULL
891
-#endif /* CONFIG_PM */
892854 
893855 static const struct pci_device_id pch_phub_pcidev_id[] = {
894856 	{ PCI_VDEVICE(INTEL, PCI_DEVICE_ID_PCH1_PHUB),       1,  },
....@@ -900,13 +862,14 @@
900862 };
901863 MODULE_DEVICE_TABLE(pci, pch_phub_pcidev_id);
902864 
865
+static SIMPLE_DEV_PM_OPS(pch_phub_pm_ops, pch_phub_suspend, pch_phub_resume);
866
+
903867 static struct pci_driver pch_phub_driver = {
904868 	.name = "pch_phub",
905869 	.id_table = pch_phub_pcidev_id,
906870 	.probe = pch_phub_probe,
907871 	.remove = pch_phub_remove,
908
-	.suspend = pch_phub_suspend,
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-	.resume = pch_phub_resume
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+	.driver.pm = &pch_phub_pm_ops,
910873 };
911874 
912875 module_pci_driver(pch_phub_driver);