1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Intel Low Power Subsystem PWM controller PCI driver 4 * 5 * Copyright (C) 2014, Intel Corporation 6 * 7 * Derived from the original pwm-lpss.c 8 */ 9 10 #include <linux/kernel.h> 11 #include <linux/module.h> 12 #include <linux/pci.h> 13 #include <linux/pm_runtime.h> 14 15 #include "pwm-lpss.h" 16 17 static int pwm_lpss_probe_pci(struct pci_dev *pdev, 18 const struct pci_device_id *id) 19 { 20 const struct pwm_lpss_boardinfo *info; 21 struct pwm_chip *chip; 22 int err; 23 24 err = pcim_enable_device(pdev); 25 if (err < 0) 26 return err; 27 28 err = pcim_iomap_regions(pdev, BIT(0), pci_name(pdev)); 29 if (err) 30 return err; 31 32 info = (struct pwm_lpss_boardinfo *)id->driver_data; 33 chip = devm_pwm_lpss_probe(&pdev->dev, pcim_iomap_table(pdev)[0], info); 34 if (IS_ERR(chip)) 35 return PTR_ERR(chip); 36 37 pm_runtime_put(&pdev->dev); 38 pm_runtime_allow(&pdev->dev); 39 40 return 0; 41 } 42 43 static void pwm_lpss_remove_pci(struct pci_dev *pdev) 44 { 45 pm_runtime_forbid(&pdev->dev); 46 pm_runtime_get_sync(&pdev->dev); 47 } 48 49 static const struct pci_device_id pwm_lpss_pci_ids[] = { 50 { PCI_VDEVICE(INTEL, 0x0ac8), (unsigned long)&pwm_lpss_bxt_info}, 51 { PCI_VDEVICE(INTEL, 0x0f08), (unsigned long)&pwm_lpss_byt_info}, 52 { PCI_VDEVICE(INTEL, 0x0f09), (unsigned long)&pwm_lpss_byt_info}, 53 { PCI_VDEVICE(INTEL, 0x11a5), (unsigned long)&pwm_lpss_tng_info}, 54 { PCI_VDEVICE(INTEL, 0x1ac8), (unsigned long)&pwm_lpss_bxt_info}, 55 { PCI_VDEVICE(INTEL, 0x2288), (unsigned long)&pwm_lpss_bsw_info}, 56 { PCI_VDEVICE(INTEL, 0x2289), (unsigned long)&pwm_lpss_bsw_info}, 57 { PCI_VDEVICE(INTEL, 0x31c8), (unsigned long)&pwm_lpss_bxt_info}, 58 { PCI_VDEVICE(INTEL, 0x5ac8), (unsigned long)&pwm_lpss_bxt_info}, 59 { }, 60 }; 61 MODULE_DEVICE_TABLE(pci, pwm_lpss_pci_ids); 62 63 static struct pci_driver pwm_lpss_driver_pci = { 64 .name = "pwm-lpss", 65 .id_table = pwm_lpss_pci_ids, 66 .probe = pwm_lpss_probe_pci, 67 .remove = pwm_lpss_remove_pci, 68 }; 69 module_pci_driver(pwm_lpss_driver_pci); 70 71 MODULE_DESCRIPTION("PWM PCI driver for Intel LPSS"); 72 MODULE_LICENSE("GPL v2"); 73 MODULE_IMPORT_NS(PWM_LPSS); 74