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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
commit | 2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch) | |
tree | 848558de17fb3008cdf4d861b01ac7781903ce39 /drivers/pwm/pwm-lpss-pci.c | |
parent | Initial commit. (diff) | |
download | linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip |
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/pwm/pwm-lpss-pci.c')
-rw-r--r-- | drivers/pwm/pwm-lpss-pci.c | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/drivers/pwm/pwm-lpss-pci.c b/drivers/pwm/pwm-lpss-pci.c new file mode 100644 index 000000000..98413d364 --- /dev/null +++ b/drivers/pwm/pwm-lpss-pci.c @@ -0,0 +1,97 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Intel Low Power Subsystem PWM controller PCI driver + * + * Copyright (C) 2014, Intel Corporation + * + * Derived from the original pwm-lpss.c + */ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/pci.h> +#include <linux/pm_runtime.h> + +#include "pwm-lpss.h" + +static int pwm_lpss_probe_pci(struct pci_dev *pdev, + const struct pci_device_id *id) +{ + const struct pwm_lpss_boardinfo *info; + struct pwm_lpss_chip *lpwm; + int err; + + err = pcim_enable_device(pdev); + if (err < 0) + return err; + + err = pcim_iomap_regions(pdev, BIT(0), pci_name(pdev)); + if (err) + return err; + + info = (struct pwm_lpss_boardinfo *)id->driver_data; + lpwm = pwm_lpss_probe(&pdev->dev, pcim_iomap_table(pdev)[0], info); + if (IS_ERR(lpwm)) + return PTR_ERR(lpwm); + + pci_set_drvdata(pdev, lpwm); + + pm_runtime_put(&pdev->dev); + pm_runtime_allow(&pdev->dev); + + return 0; +} + +static void pwm_lpss_remove_pci(struct pci_dev *pdev) +{ + pm_runtime_forbid(&pdev->dev); + pm_runtime_get_sync(&pdev->dev); +} + +static int pwm_lpss_runtime_suspend_pci(struct device *dev) +{ + /* + * The PCI core will handle transition to D3 automatically. We only + * need to provide runtime PM hooks for that to happen. + */ + return 0; +} + +static int pwm_lpss_runtime_resume_pci(struct device *dev) +{ + return 0; +} + +static DEFINE_RUNTIME_DEV_PM_OPS(pwm_lpss_pci_pm, + pwm_lpss_runtime_suspend_pci, + pwm_lpss_runtime_resume_pci, + NULL); + +static const struct pci_device_id pwm_lpss_pci_ids[] = { + { PCI_VDEVICE(INTEL, 0x0ac8), (unsigned long)&pwm_lpss_bxt_info}, + { PCI_VDEVICE(INTEL, 0x0f08), (unsigned long)&pwm_lpss_byt_info}, + { PCI_VDEVICE(INTEL, 0x0f09), (unsigned long)&pwm_lpss_byt_info}, + { PCI_VDEVICE(INTEL, 0x11a5), (unsigned long)&pwm_lpss_tng_info}, + { PCI_VDEVICE(INTEL, 0x1ac8), (unsigned long)&pwm_lpss_bxt_info}, + { PCI_VDEVICE(INTEL, 0x2288), (unsigned long)&pwm_lpss_bsw_info}, + { PCI_VDEVICE(INTEL, 0x2289), (unsigned long)&pwm_lpss_bsw_info}, + { PCI_VDEVICE(INTEL, 0x31c8), (unsigned long)&pwm_lpss_bxt_info}, + { PCI_VDEVICE(INTEL, 0x5ac8), (unsigned long)&pwm_lpss_bxt_info}, + { }, +}; +MODULE_DEVICE_TABLE(pci, pwm_lpss_pci_ids); + +static struct pci_driver pwm_lpss_driver_pci = { + .name = "pwm-lpss", + .id_table = pwm_lpss_pci_ids, + .probe = pwm_lpss_probe_pci, + .remove = pwm_lpss_remove_pci, + .driver = { + .pm = pm_ptr(&pwm_lpss_pci_pm), + }, +}; +module_pci_driver(pwm_lpss_driver_pci); + +MODULE_DESCRIPTION("PWM PCI driver for Intel LPSS"); +MODULE_LICENSE("GPL v2"); +MODULE_IMPORT_NS(PWM_LPSS); |