v4.19.13 snapshot.
diff --git a/drivers/spi/spi-dw-pci.c b/drivers/spi/spi-dw-pci.c
new file mode 100644
index 0000000..ef7db75
--- /dev/null
+++ b/drivers/spi/spi-dw-pci.c
@@ -0,0 +1,153 @@
+/*
+ * PCI interface driver for DW SPI Core
+ *
+ * Copyright (c) 2009, 2014 Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ */
+
+#include <linux/interrupt.h>
+#include <linux/pci.h>
+#include <linux/slab.h>
+#include <linux/spi/spi.h>
+#include <linux/module.h>
+
+#include "spi-dw.h"
+
+#define DRIVER_NAME "dw_spi_pci"
+
+struct spi_pci_desc {
+ int (*setup)(struct dw_spi *);
+ u16 num_cs;
+ u16 bus_num;
+};
+
+static struct spi_pci_desc spi_pci_mid_desc_1 = {
+ .setup = dw_spi_mid_init,
+ .num_cs = 5,
+ .bus_num = 0,
+};
+
+static struct spi_pci_desc spi_pci_mid_desc_2 = {
+ .setup = dw_spi_mid_init,
+ .num_cs = 2,
+ .bus_num = 1,
+};
+
+static int spi_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
+{
+ struct dw_spi *dws;
+ struct spi_pci_desc *desc = (struct spi_pci_desc *)ent->driver_data;
+ int pci_bar = 0;
+ int ret;
+
+ ret = pcim_enable_device(pdev);
+ if (ret)
+ return ret;
+
+ dws = devm_kzalloc(&pdev->dev, sizeof(*dws), GFP_KERNEL);
+ if (!dws)
+ return -ENOMEM;
+
+ /* Get basic io resource and map it */
+ dws->paddr = pci_resource_start(pdev, pci_bar);
+
+ ret = pcim_iomap_regions(pdev, 1 << pci_bar, pci_name(pdev));
+ if (ret)
+ return ret;
+
+ dws->regs = pcim_iomap_table(pdev)[pci_bar];
+ dws->irq = pdev->irq;
+
+ /*
+ * Specific handling for platforms, like dma setup,
+ * clock rate, FIFO depth.
+ */
+ if (desc) {
+ dws->num_cs = desc->num_cs;
+ dws->bus_num = desc->bus_num;
+
+ if (desc->setup) {
+ ret = desc->setup(dws);
+ if (ret)
+ return ret;
+ }
+ } else {
+ return -ENODEV;
+ }
+
+ ret = dw_spi_add_host(&pdev->dev, dws);
+ if (ret)
+ return ret;
+
+ /* PCI hook and SPI hook use the same drv data */
+ pci_set_drvdata(pdev, dws);
+
+ dev_info(&pdev->dev, "found PCI SPI controller(ID: %04x:%04x)\n",
+ pdev->vendor, pdev->device);
+
+ return 0;
+}
+
+static void spi_pci_remove(struct pci_dev *pdev)
+{
+ struct dw_spi *dws = pci_get_drvdata(pdev);
+
+ dw_spi_remove_host(dws);
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int spi_suspend(struct device *dev)
+{
+ struct pci_dev *pdev = to_pci_dev(dev);
+ struct dw_spi *dws = pci_get_drvdata(pdev);
+
+ return dw_spi_suspend_host(dws);
+}
+
+static int spi_resume(struct device *dev)
+{
+ struct pci_dev *pdev = to_pci_dev(dev);
+ struct dw_spi *dws = pci_get_drvdata(pdev);
+
+ return dw_spi_resume_host(dws);
+}
+#endif
+
+static SIMPLE_DEV_PM_OPS(dw_spi_pm_ops, spi_suspend, spi_resume);
+
+static const struct pci_device_id pci_ids[] = {
+ /* Intel MID platform SPI controller 0 */
+ /*
+ * The access to the device 8086:0801 is disabled by HW, since it's
+ * exclusively used by SCU to communicate with MSIC.
+ */
+ /* Intel MID platform SPI controller 1 */
+ { PCI_VDEVICE(INTEL, 0x0800), (kernel_ulong_t)&spi_pci_mid_desc_1},
+ /* Intel MID platform SPI controller 2 */
+ { PCI_VDEVICE(INTEL, 0x0812), (kernel_ulong_t)&spi_pci_mid_desc_2},
+ {},
+};
+
+static struct pci_driver dw_spi_driver = {
+ .name = DRIVER_NAME,
+ .id_table = pci_ids,
+ .probe = spi_pci_probe,
+ .remove = spi_pci_remove,
+ .driver = {
+ .pm = &dw_spi_pm_ops,
+ },
+};
+
+module_pci_driver(dw_spi_driver);
+
+MODULE_AUTHOR("Feng Tang <feng.tang@intel.com>");
+MODULE_DESCRIPTION("PCI interface driver for DW SPI Core");
+MODULE_LICENSE("GPL v2");