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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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4b45efe852
The new coming Intel platforms such as Skylake will contain Sunrisepoint PCH. The main difference to the previous platforms is that the LPSS devices are compound devices where usually main (SPI, HSUART, or I2C) and DMA IPs are present. This patch brings the driver for such devices found on Sunrisepoint PCH. Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
114 lines
3.3 KiB
C
114 lines
3.3 KiB
C
/*
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* Intel LPSS PCI support.
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*
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* Copyright (C) 2015, Intel Corporation
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*
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* Authors: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
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* Mika Westerberg <mika.westerberg@linux.intel.com>
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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 version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/ioport.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/pci.h>
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#include <linux/pm.h>
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#include <linux/pm_runtime.h>
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#include "intel-lpss.h"
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static int intel_lpss_pci_probe(struct pci_dev *pdev,
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const struct pci_device_id *id)
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{
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struct intel_lpss_platform_info *info;
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int ret;
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ret = pcim_enable_device(pdev);
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if (ret)
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return ret;
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info = devm_kmemdup(&pdev->dev, (void *)id->driver_data, sizeof(*info),
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GFP_KERNEL);
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if (!info)
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return -ENOMEM;
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info->mem = &pdev->resource[0];
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info->irq = pdev->irq;
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/* Probably it is enough to set this for iDMA capable devices only */
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pci_set_master(pdev);
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ret = intel_lpss_probe(&pdev->dev, info);
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if (ret)
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return ret;
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pm_runtime_put(&pdev->dev);
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pm_runtime_allow(&pdev->dev);
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return 0;
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}
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static void intel_lpss_pci_remove(struct pci_dev *pdev)
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{
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pm_runtime_forbid(&pdev->dev);
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pm_runtime_get_sync(&pdev->dev);
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intel_lpss_remove(&pdev->dev);
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}
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static INTEL_LPSS_PM_OPS(intel_lpss_pci_pm_ops);
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static const struct intel_lpss_platform_info spt_info = {
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.clk_rate = 120000000,
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};
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static const struct intel_lpss_platform_info spt_uart_info = {
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.clk_rate = 120000000,
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.clk_con_id = "baudclk",
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};
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static const struct pci_device_id intel_lpss_pci_ids[] = {
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/* SPT-LP */
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{ PCI_VDEVICE(INTEL, 0x9d27), (kernel_ulong_t)&spt_uart_info },
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{ PCI_VDEVICE(INTEL, 0x9d28), (kernel_ulong_t)&spt_uart_info },
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{ PCI_VDEVICE(INTEL, 0x9d29), (kernel_ulong_t)&spt_info },
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{ PCI_VDEVICE(INTEL, 0x9d2a), (kernel_ulong_t)&spt_info },
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{ PCI_VDEVICE(INTEL, 0x9d60), (kernel_ulong_t)&spt_info },
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{ PCI_VDEVICE(INTEL, 0x9d61), (kernel_ulong_t)&spt_info },
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{ PCI_VDEVICE(INTEL, 0x9d62), (kernel_ulong_t)&spt_info },
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{ PCI_VDEVICE(INTEL, 0x9d63), (kernel_ulong_t)&spt_info },
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{ PCI_VDEVICE(INTEL, 0x9d64), (kernel_ulong_t)&spt_info },
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{ PCI_VDEVICE(INTEL, 0x9d65), (kernel_ulong_t)&spt_info },
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{ PCI_VDEVICE(INTEL, 0x9d66), (kernel_ulong_t)&spt_uart_info },
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/* SPT-H */
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{ PCI_VDEVICE(INTEL, 0xa127), (kernel_ulong_t)&spt_uart_info },
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{ PCI_VDEVICE(INTEL, 0xa128), (kernel_ulong_t)&spt_uart_info },
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{ PCI_VDEVICE(INTEL, 0xa129), (kernel_ulong_t)&spt_info },
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{ PCI_VDEVICE(INTEL, 0xa12a), (kernel_ulong_t)&spt_info },
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{ PCI_VDEVICE(INTEL, 0xa160), (kernel_ulong_t)&spt_info },
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{ PCI_VDEVICE(INTEL, 0xa161), (kernel_ulong_t)&spt_info },
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{ PCI_VDEVICE(INTEL, 0xa166), (kernel_ulong_t)&spt_uart_info },
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{ }
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};
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MODULE_DEVICE_TABLE(pci, intel_lpss_pci_ids);
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static struct pci_driver intel_lpss_pci_driver = {
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.name = "intel-lpss",
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.id_table = intel_lpss_pci_ids,
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.probe = intel_lpss_pci_probe,
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.remove = intel_lpss_pci_remove,
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.driver = {
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.pm = &intel_lpss_pci_pm_ops,
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},
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};
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module_pci_driver(intel_lpss_pci_driver);
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MODULE_AUTHOR("Andy Shevchenko <andriy.shevchenko@linux.intel.com>");
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MODULE_AUTHOR("Mika Westerberg <mika.westerberg@linux.intel.com>");
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MODULE_DESCRIPTION("Intel LPSS PCI driver");
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MODULE_LICENSE("GPL v2");
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