drivers/spi/spi-pxa2xx-pci.c - linux - Git at Google

 // SPDX-License-Identifier: GPL-2.0-only
 /*
  * PCI glue driver for SPI PXA2xx compatible controllers.
  * CE4100's SPI device is more or less the same one as found on PXA.
  *
  * Copyright (C) 2016, 2021 Intel Corporation
  */
 #include <linux/clk-provider.h>
 #include <linux/device.h>
 #include <linux/err.h>
 #include <linux/module.h>
 #include <linux/pci.h>
 #include <linux/pm.h>
 #include <linux/pm_runtime.h>
 #include <linux/sprintf.h>
 #include <linux/string.h>
 #include <linux/types.h>

 #include <linux/dmaengine.h>
 #include <linux/platform_data/dma-dw.h>

 #include "spi-pxa2xx.h"

 #define PCI_DEVICE_ID_INTEL_QUARK_X1000		0x0935
 #define PCI_DEVICE_ID_INTEL_BYT			0x0f0e
 #define PCI_DEVICE_ID_INTEL_MRFLD		0x1194
 #define PCI_DEVICE_ID_INTEL_BSW0		0x228e
 #define PCI_DEVICE_ID_INTEL_BSW1		0x2290
 #define PCI_DEVICE_ID_INTEL_BSW2		0x22ac
 #define PCI_DEVICE_ID_INTEL_CE4100		0x2e6a
 #define PCI_DEVICE_ID_INTEL_LPT0_0		0x9c65
 #define PCI_DEVICE_ID_INTEL_LPT0_1		0x9c66
 #define PCI_DEVICE_ID_INTEL_LPT1_0		0x9ce5
 #define PCI_DEVICE_ID_INTEL_LPT1_1		0x9ce6

 struct pxa_spi_info {
 	int (*setup)(struct pci_dev *pdev, struct pxa2xx_spi_controller *c);
 };

 static struct dw_dma_slave byt_tx_param = { .dst_id = 0 };
 static struct dw_dma_slave byt_rx_param = { .src_id = 1 };

 static struct dw_dma_slave mrfld3_tx_param = { .dst_id = 15 };
 static struct dw_dma_slave mrfld3_rx_param = { .src_id = 14 };
 static struct dw_dma_slave mrfld5_tx_param = { .dst_id = 13 };
 static struct dw_dma_slave mrfld5_rx_param = { .src_id = 12 };
 static struct dw_dma_slave mrfld6_tx_param = { .dst_id = 11 };
 static struct dw_dma_slave mrfld6_rx_param = { .src_id = 10 };

 static struct dw_dma_slave bsw0_tx_param = { .dst_id = 0 };
 static struct dw_dma_slave bsw0_rx_param = { .src_id = 1 };
 static struct dw_dma_slave bsw1_tx_param = { .dst_id = 6 };
 static struct dw_dma_slave bsw1_rx_param = { .src_id = 7 };
 static struct dw_dma_slave bsw2_tx_param = { .dst_id = 8 };
 static struct dw_dma_slave bsw2_rx_param = { .src_id = 9 };

 static struct dw_dma_slave lpt1_tx_param = { .dst_id = 0 };
 static struct dw_dma_slave lpt1_rx_param = { .src_id = 1 };
 static struct dw_dma_slave lpt0_tx_param = { .dst_id = 2 };
 static struct dw_dma_slave lpt0_rx_param = { .src_id = 3 };

 static void pxa2xx_spi_pci_clk_unregister(void *clk)
 {
 	clk_unregister(clk);
 }

 static int pxa2xx_spi_pci_clk_register(struct pci_dev *dev, struct ssp_device *ssp,
 				       unsigned long rate)
 {
 	char buf[40];

 	snprintf(buf, sizeof(buf), "pxa2xx-spi.%d", ssp->port_id);
 	ssp->clk = clk_register_fixed_rate(&dev->dev, buf, NULL, 0, rate);
 	if (IS_ERR(ssp->clk))
 		return PTR_ERR(ssp->clk);

 	return devm_add_action_or_reset(&dev->dev, pxa2xx_spi_pci_clk_unregister, ssp->clk);
 }

 static bool lpss_dma_filter(struct dma_chan *chan, void *param)
 {
 	struct dw_dma_slave *dws = param;

 	if (dws->dma_dev != chan->device->dev)
 		return false;

 	chan->private = dws;
 	return true;
 }

 static void lpss_dma_put_device(void *dma_dev)
 {
 	pci_dev_put(dma_dev);
 }

 static int lpss_spi_setup(struct pci_dev *dev, struct pxa2xx_spi_controller *c)
 {
 	struct ssp_device *ssp = &c->ssp;
 	struct dw_dma_slave *tx, *rx;
 	struct pci_dev *dma_dev;
 	int ret;

 	switch (dev->device) {
 	case PCI_DEVICE_ID_INTEL_BYT:
 		ssp->type = LPSS_BYT_SSP;
 		ssp->port_id = 0;
 		c->tx_param = &byt_tx_param;
 		c->rx_param = &byt_rx_param;
 		break;
 	case PCI_DEVICE_ID_INTEL_BSW0:
 		ssp->type = LPSS_BSW_SSP;
 		ssp->port_id = 0;
 		c->tx_param = &bsw0_tx_param;
 		c->rx_param = &bsw0_rx_param;
 		break;
 	case PCI_DEVICE_ID_INTEL_BSW1:
 		ssp->type = LPSS_BSW_SSP;
 		ssp->port_id = 1;
 		c->tx_param = &bsw1_tx_param;
 		c->rx_param = &bsw1_rx_param;
 		break;
 	case PCI_DEVICE_ID_INTEL_BSW2:
 		ssp->type = LPSS_BSW_SSP;
 		ssp->port_id = 2;
 		c->tx_param = &bsw2_tx_param;
 		c->rx_param = &bsw2_rx_param;
 		break;
 	case PCI_DEVICE_ID_INTEL_LPT0_0:
 	case PCI_DEVICE_ID_INTEL_LPT1_0:
 		ssp->type = LPSS_LPT_SSP;
 		ssp->port_id = 0;
 		c->tx_param = &lpt0_tx_param;
 		c->rx_param = &lpt0_rx_param;
 		break;
 	case PCI_DEVICE_ID_INTEL_LPT0_1:
 	case PCI_DEVICE_ID_INTEL_LPT1_1:
 		ssp->type = LPSS_LPT_SSP;
 		ssp->port_id = 1;
 		c->tx_param = &lpt1_tx_param;
 		c->rx_param = &lpt1_rx_param;
 		break;
 	default:
 		return -ENODEV;
 	}

 	c->num_chipselect = 1;

 	ret = pxa2xx_spi_pci_clk_register(dev, ssp, 50000000);
 	if (ret)
 		return ret;

 	dma_dev = pci_get_slot(dev->bus, PCI_DEVFN(PCI_SLOT(dev->devfn), 0));
 	ret = devm_add_action_or_reset(&dev->dev, lpss_dma_put_device, dma_dev);
 	if (ret)
 		return ret;

 	tx = c->tx_param;
 	tx->dma_dev = &dma_dev->dev;
 	tx->m_master = 0;
 	tx->p_master = 1;

 	rx = c->rx_param;
 	rx->dma_dev = &dma_dev->dev;
 	rx->m_master = 0;
 	rx->p_master = 1;

 	c->dma_filter = lpss_dma_filter;
 	c->dma_burst_size = 1;
 	c->enable_dma = 1;
 	return 0;
 }

 static const struct pxa_spi_info lpss_info_config = {
 	.setup = lpss_spi_setup,
 };

 static int ce4100_spi_setup(struct pci_dev *dev, struct pxa2xx_spi_controller *c)
 {
 	struct ssp_device *ssp = &c->ssp;

 	ssp->type = PXA25x_SSP;
 	ssp->port_id = dev->devfn;
 	c->num_chipselect = dev->devfn;

 	return pxa2xx_spi_pci_clk_register(dev, ssp, 3686400);
 }

 static const struct pxa_spi_info ce4100_info_config = {
 	.setup = ce4100_spi_setup,
 };

 static int mrfld_spi_setup(struct pci_dev *dev, struct pxa2xx_spi_controller *c)
 {
 	struct ssp_device *ssp = &c->ssp;
 	struct dw_dma_slave *tx, *rx;
 	struct pci_dev *dma_dev;
 	int ret;

 	ssp->type = MRFLD_SSP;

 	switch (PCI_FUNC(dev->devfn)) {
 	case 0:
 		ssp->port_id = 3;
 		c->num_chipselect = 1;
 		c->tx_param = &mrfld3_tx_param;
 		c->rx_param = &mrfld3_rx_param;
 		break;
 	case 1:
 		ssp->port_id = 5;
 		c->num_chipselect = 4;
 		c->tx_param = &mrfld5_tx_param;
 		c->rx_param = &mrfld5_rx_param;
 		break;
 	case 2:
 		ssp->port_id = 6;
 		c->num_chipselect = 1;
 		c->tx_param = &mrfld6_tx_param;
 		c->rx_param = &mrfld6_rx_param;
 		break;
 	default:
 		return -ENODEV;
 	}

 	ret = pxa2xx_spi_pci_clk_register(dev, ssp, 25000000);
 	if (ret)
 		return ret;

 	dma_dev = pci_get_slot(dev->bus, PCI_DEVFN(21, 0));
 	ret = devm_add_action_or_reset(&dev->dev, lpss_dma_put_device, dma_dev);
 	if (ret)
 		return ret;

 	tx = c->tx_param;
 	tx->dma_dev = &dma_dev->dev;

 	rx = c->rx_param;
 	rx->dma_dev = &dma_dev->dev;

 	c->dma_filter = lpss_dma_filter;
 	c->dma_burst_size = 8;
 	c->enable_dma = 1;
 	return 0;
 }

 static const struct pxa_spi_info mrfld_info_config = {
 	.setup = mrfld_spi_setup,
 };

 static int qrk_spi_setup(struct pci_dev *dev, struct pxa2xx_spi_controller *c)
 {
 	struct ssp_device *ssp = &c->ssp;

 	ssp->type = QUARK_X1000_SSP;
 	ssp->port_id = dev->devfn;
 	c->num_chipselect = 1;

 	return pxa2xx_spi_pci_clk_register(dev, ssp, 50000000);
 }

 static const struct pxa_spi_info qrk_info_config = {
 	.setup = qrk_spi_setup,
 };

 static int pxa2xx_spi_pci_probe(struct pci_dev *dev,
 		const struct pci_device_id *ent)
 {
 	const struct pxa_spi_info *info;
 	int ret;
 	struct pxa2xx_spi_controller *pdata;
 	struct ssp_device *ssp;

 	ret = pcim_enable_device(dev);
 	if (ret)
 		return ret;

 	ret = pcim_iomap_regions(dev, 1 << 0, "PXA2xx SPI");
 	if (ret)
 		return ret;

 	pdata = devm_kzalloc(&dev->dev, sizeof(*pdata), GFP_KERNEL);
 	if (!pdata)
 		return -ENOMEM;

 	ssp = &pdata->ssp;
 	ssp->dev = &dev->dev;
 	ssp->phys_base = pci_resource_start(dev, 0);
 	ssp->mmio_base = pcim_iomap_table(dev)[0];

 	info = (struct pxa_spi_info *)ent->driver_data;
 	ret = info->setup(dev, pdata);
 	if (ret)
 		return ret;

 	pci_set_master(dev);

 	ret = pci_alloc_irq_vectors(dev, 1, 1, PCI_IRQ_ALL_TYPES);
 	if (ret < 0)
 		return ret;
 	ssp->irq = pci_irq_vector(dev, 0);

 	ret = pxa2xx_spi_probe(&dev->dev, ssp, pdata);
 	if (ret)
 		return ret;

 	pm_runtime_set_autosuspend_delay(&dev->dev, 50);
 	pm_runtime_use_autosuspend(&dev->dev);
 	pm_runtime_put_autosuspend(&dev->dev);
 	pm_runtime_allow(&dev->dev);

 	return 0;
 }

 static void pxa2xx_spi_pci_remove(struct pci_dev *dev)
 {
 	pm_runtime_forbid(&dev->dev);
 	pm_runtime_get_noresume(&dev->dev);

 	pxa2xx_spi_remove(&dev->dev);
 }

 static const struct pci_device_id pxa2xx_spi_pci_devices[] = {
 	{ PCI_DEVICE_DATA(INTEL, QUARK_X1000, &qrk_info_config) },
 	{ PCI_DEVICE_DATA(INTEL, BYT, &lpss_info_config) },
 	{ PCI_DEVICE_DATA(INTEL, MRFLD, &mrfld_info_config) },
 	{ PCI_DEVICE_DATA(INTEL, BSW0, &lpss_info_config) },
 	{ PCI_DEVICE_DATA(INTEL, BSW1, &lpss_info_config) },
 	{ PCI_DEVICE_DATA(INTEL, BSW2, &lpss_info_config) },
 	{ PCI_DEVICE_DATA(INTEL, CE4100, &ce4100_info_config) },
 	{ PCI_DEVICE_DATA(INTEL, LPT0_0, &lpss_info_config) },
 	{ PCI_DEVICE_DATA(INTEL, LPT0_1, &lpss_info_config) },
 	{ PCI_DEVICE_DATA(INTEL, LPT1_0, &lpss_info_config) },
 	{ PCI_DEVICE_DATA(INTEL, LPT1_1, &lpss_info_config) },
 	{ }
 };
 MODULE_DEVICE_TABLE(pci, pxa2xx_spi_pci_devices);

 static struct pci_driver pxa2xx_spi_pci_driver = {
 	.name           = "pxa2xx_spi_pci",
 	.id_table       = pxa2xx_spi_pci_devices,
 	.driver = {
 		.pm	= pm_ptr(&pxa2xx_spi_pm_ops),
 	},
 	.probe          = pxa2xx_spi_pci_probe,
 	.remove         = pxa2xx_spi_pci_remove,
 };

 module_pci_driver(pxa2xx_spi_pci_driver);

 MODULE_DESCRIPTION("CE4100/LPSS PCI-SPI glue code for PXA's driver");
 MODULE_LICENSE("GPL v2");
 MODULE_IMPORT_NS(SPI_PXA2xx);
 MODULE_AUTHOR("Sebastian Andrzej Siewior <bigeasy@linutronix.de>");
	// SPDX-License-Identifier: GPL-2.0-only
	/*
	* PCI glue driver for SPI PXA2xx compatible controllers.
	* CE4100's SPI device is more or less the same one as found on PXA.
	*
	* Copyright (C) 2016, 2021 Intel Corporation
	*/
	#include <linux/clk-provider.h>
	#include <linux/device.h>
	#include <linux/err.h>
	#include <linux/module.h>
	#include <linux/pci.h>
	#include <linux/pm.h>
	#include <linux/pm_runtime.h>
	#include <linux/sprintf.h>
	#include <linux/string.h>
	#include <linux/types.h>

	#include <linux/dmaengine.h>
	#include <linux/platform_data/dma-dw.h>

	#include "spi-pxa2xx.h"

	#define PCI_DEVICE_ID_INTEL_QUARK_X1000 0x0935
	#define PCI_DEVICE_ID_INTEL_BYT 0x0f0e
	#define PCI_DEVICE_ID_INTEL_MRFLD 0x1194
	#define PCI_DEVICE_ID_INTEL_BSW0 0x228e
	#define PCI_DEVICE_ID_INTEL_BSW1 0x2290
	#define PCI_DEVICE_ID_INTEL_BSW2 0x22ac
	#define PCI_DEVICE_ID_INTEL_CE4100 0x2e6a
	#define PCI_DEVICE_ID_INTEL_LPT0_0 0x9c65
	#define PCI_DEVICE_ID_INTEL_LPT0_1 0x9c66
	#define PCI_DEVICE_ID_INTEL_LPT1_0 0x9ce5
	#define PCI_DEVICE_ID_INTEL_LPT1_1 0x9ce6

	struct pxa_spi_info {
	int (setup)(struct pci_dev pdev, struct pxa2xx_spi_controller *c);
	};

	static struct dw_dma_slave byt_tx_param = { .dst_id = 0 };
	static struct dw_dma_slave byt_rx_param = { .src_id = 1 };

	static struct dw_dma_slave mrfld3_tx_param = { .dst_id = 15 };
	static struct dw_dma_slave mrfld3_rx_param = { .src_id = 14 };
	static struct dw_dma_slave mrfld5_tx_param = { .dst_id = 13 };
	static struct dw_dma_slave mrfld5_rx_param = { .src_id = 12 };
	static struct dw_dma_slave mrfld6_tx_param = { .dst_id = 11 };
	static struct dw_dma_slave mrfld6_rx_param = { .src_id = 10 };

	static struct dw_dma_slave bsw0_tx_param = { .dst_id = 0 };
	static struct dw_dma_slave bsw0_rx_param = { .src_id = 1 };
	static struct dw_dma_slave bsw1_tx_param = { .dst_id = 6 };
	static struct dw_dma_slave bsw1_rx_param = { .src_id = 7 };
	static struct dw_dma_slave bsw2_tx_param = { .dst_id = 8 };
	static struct dw_dma_slave bsw2_rx_param = { .src_id = 9 };

	static struct dw_dma_slave lpt1_tx_param = { .dst_id = 0 };
	static struct dw_dma_slave lpt1_rx_param = { .src_id = 1 };
	static struct dw_dma_slave lpt0_tx_param = { .dst_id = 2 };
	static struct dw_dma_slave lpt0_rx_param = { .src_id = 3 };

	static void pxa2xx_spi_pci_clk_unregister(void *clk)
	{
	clk_unregister(clk);
	}

	static int pxa2xx_spi_pci_clk_register(struct pci_dev dev, struct ssp_device ssp,
	unsigned long rate)
	{
	char buf[40];

	snprintf(buf, sizeof(buf), "pxa2xx-spi.%d", ssp->port_id);
	ssp->clk = clk_register_fixed_rate(&dev->dev, buf, NULL, 0, rate);
	if (IS_ERR(ssp->clk))
	return PTR_ERR(ssp->clk);

	return devm_add_action_or_reset(&dev->dev, pxa2xx_spi_pci_clk_unregister, ssp->clk);
	}

	static bool lpss_dma_filter(struct dma_chan chan, void param)
	{
	struct dw_dma_slave *dws = param;

	if (dws->dma_dev != chan->device->dev)
	return false;

	chan->private = dws;
	return true;
	}

	static void lpss_dma_put_device(void *dma_dev)
	{
	pci_dev_put(dma_dev);
	}

	static int lpss_spi_setup(struct pci_dev dev, struct pxa2xx_spi_controller c)
	{
	struct ssp_device *ssp = &c->ssp;
	struct dw_dma_slave tx, rx;
	struct pci_dev *dma_dev;
	int ret;

	switch (dev->device) {
	case PCI_DEVICE_ID_INTEL_BYT:
	ssp->type = LPSS_BYT_SSP;
	ssp->port_id = 0;
	c->tx_param = &byt_tx_param;
	c->rx_param = &byt_rx_param;
	break;
	case PCI_DEVICE_ID_INTEL_BSW0:
	ssp->type = LPSS_BSW_SSP;
	ssp->port_id = 0;
	c->tx_param = &bsw0_tx_param;
	c->rx_param = &bsw0_rx_param;
	break;
	case PCI_DEVICE_ID_INTEL_BSW1:
	ssp->type = LPSS_BSW_SSP;
	ssp->port_id = 1;
	c->tx_param = &bsw1_tx_param;
	c->rx_param = &bsw1_rx_param;
	break;
	case PCI_DEVICE_ID_INTEL_BSW2:
	ssp->type = LPSS_BSW_SSP;
	ssp->port_id = 2;
	c->tx_param = &bsw2_tx_param;
	c->rx_param = &bsw2_rx_param;
	break;
	case PCI_DEVICE_ID_INTEL_LPT0_0:
	case PCI_DEVICE_ID_INTEL_LPT1_0:
	ssp->type = LPSS_LPT_SSP;
	ssp->port_id = 0;
	c->tx_param = &lpt0_tx_param;
	c->rx_param = &lpt0_rx_param;
	break;
	case PCI_DEVICE_ID_INTEL_LPT0_1:
	case PCI_DEVICE_ID_INTEL_LPT1_1:
	ssp->type = LPSS_LPT_SSP;
	ssp->port_id = 1;
	c->tx_param = &lpt1_tx_param;
	c->rx_param = &lpt1_rx_param;
	break;
	default:
	return -ENODEV;
	}

	c->num_chipselect = 1;

	ret = pxa2xx_spi_pci_clk_register(dev, ssp, 50000000);
	if (ret)
	return ret;

	dma_dev = pci_get_slot(dev->bus, PCI_DEVFN(PCI_SLOT(dev->devfn), 0));
	ret = devm_add_action_or_reset(&dev->dev, lpss_dma_put_device, dma_dev);
	if (ret)
	return ret;

	tx = c->tx_param;
	tx->dma_dev = &dma_dev->dev;
	tx->m_master = 0;
	tx->p_master = 1;

	rx = c->rx_param;
	rx->dma_dev = &dma_dev->dev;
	rx->m_master = 0;
	rx->p_master = 1;

	c->dma_filter = lpss_dma_filter;
	c->dma_burst_size = 1;
	c->enable_dma = 1;
	return 0;
	}

	static const struct pxa_spi_info lpss_info_config = {
	.setup = lpss_spi_setup,
	};

	static int ce4100_spi_setup(struct pci_dev dev, struct pxa2xx_spi_controller c)
	{
	struct ssp_device *ssp = &c->ssp;

	ssp->type = PXA25x_SSP;
	ssp->port_id = dev->devfn;
	c->num_chipselect = dev->devfn;

	return pxa2xx_spi_pci_clk_register(dev, ssp, 3686400);
	}

	static const struct pxa_spi_info ce4100_info_config = {
	.setup = ce4100_spi_setup,
	};

	static int mrfld_spi_setup(struct pci_dev dev, struct pxa2xx_spi_controller c)
	{
	struct ssp_device *ssp = &c->ssp;
	struct dw_dma_slave tx, rx;
	struct pci_dev *dma_dev;
	int ret;

	ssp->type = MRFLD_SSP;

	switch (PCI_FUNC(dev->devfn)) {
	case 0:
	ssp->port_id = 3;
	c->num_chipselect = 1;
	c->tx_param = &mrfld3_tx_param;
	c->rx_param = &mrfld3_rx_param;
	break;
	case 1:
	ssp->port_id = 5;
	c->num_chipselect = 4;
	c->tx_param = &mrfld5_tx_param;
	c->rx_param = &mrfld5_rx_param;
	break;
	case 2:
	ssp->port_id = 6;
	c->num_chipselect = 1;
	c->tx_param = &mrfld6_tx_param;
	c->rx_param = &mrfld6_rx_param;
	break;
	default:
	return -ENODEV;
	}

	ret = pxa2xx_spi_pci_clk_register(dev, ssp, 25000000);
	if (ret)
	return ret;

	dma_dev = pci_get_slot(dev->bus, PCI_DEVFN(21, 0));
	ret = devm_add_action_or_reset(&dev->dev, lpss_dma_put_device, dma_dev);
	if (ret)
	return ret;

	tx = c->tx_param;
	tx->dma_dev = &dma_dev->dev;

	rx = c->rx_param;
	rx->dma_dev = &dma_dev->dev;

	c->dma_filter = lpss_dma_filter;
	c->dma_burst_size = 8;
	c->enable_dma = 1;
	return 0;
	}

	static const struct pxa_spi_info mrfld_info_config = {
	.setup = mrfld_spi_setup,
	};

	static int qrk_spi_setup(struct pci_dev dev, struct pxa2xx_spi_controller c)
	{
	struct ssp_device *ssp = &c->ssp;

	ssp->type = QUARK_X1000_SSP;
	ssp->port_id = dev->devfn;
	c->num_chipselect = 1;

	return pxa2xx_spi_pci_clk_register(dev, ssp, 50000000);
	}

	static const struct pxa_spi_info qrk_info_config = {
	.setup = qrk_spi_setup,
	};

	static int pxa2xx_spi_pci_probe(struct pci_dev *dev,
	const struct pci_device_id *ent)
	{
	const struct pxa_spi_info *info;
	int ret;
	struct pxa2xx_spi_controller *pdata;
	struct ssp_device *ssp;

	ret = pcim_enable_device(dev);
	if (ret)
	return ret;

	ret = pcim_iomap_regions(dev, 1 << 0, "PXA2xx SPI");
	if (ret)
	return ret;

	pdata = devm_kzalloc(&dev->dev, sizeof(*pdata), GFP_KERNEL);
	if (!pdata)
	return -ENOMEM;

	ssp = &pdata->ssp;
	ssp->dev = &dev->dev;
	ssp->phys_base = pci_resource_start(dev, 0);
	ssp->mmio_base = pcim_iomap_table(dev)[0];

	info = (struct pxa_spi_info *)ent->driver_data;
	ret = info->setup(dev, pdata);
	if (ret)
	return ret;

	pci_set_master(dev);

	ret = pci_alloc_irq_vectors(dev, 1, 1, PCI_IRQ_ALL_TYPES);
	if (ret < 0)
	return ret;
	ssp->irq = pci_irq_vector(dev, 0);

	ret = pxa2xx_spi_probe(&dev->dev, ssp, pdata);
	if (ret)
	return ret;

	pm_runtime_set_autosuspend_delay(&dev->dev, 50);
	pm_runtime_use_autosuspend(&dev->dev);
	pm_runtime_put_autosuspend(&dev->dev);
	pm_runtime_allow(&dev->dev);

	return 0;
	}

	static void pxa2xx_spi_pci_remove(struct pci_dev *dev)
	{
	pm_runtime_forbid(&dev->dev);
	pm_runtime_get_noresume(&dev->dev);

	pxa2xx_spi_remove(&dev->dev);
	}

	static const struct pci_device_id pxa2xx_spi_pci_devices[] = {
	{ PCI_DEVICE_DATA(INTEL, QUARK_X1000, &qrk_info_config) },
	{ PCI_DEVICE_DATA(INTEL, BYT, &lpss_info_config) },
	{ PCI_DEVICE_DATA(INTEL, MRFLD, &mrfld_info_config) },
	{ PCI_DEVICE_DATA(INTEL, BSW0, &lpss_info_config) },
	{ PCI_DEVICE_DATA(INTEL, BSW1, &lpss_info_config) },
	{ PCI_DEVICE_DATA(INTEL, BSW2, &lpss_info_config) },
	{ PCI_DEVICE_DATA(INTEL, CE4100, &ce4100_info_config) },
	{ PCI_DEVICE_DATA(INTEL, LPT0_0, &lpss_info_config) },
	{ PCI_DEVICE_DATA(INTEL, LPT0_1, &lpss_info_config) },
	{ PCI_DEVICE_DATA(INTEL, LPT1_0, &lpss_info_config) },
	{ PCI_DEVICE_DATA(INTEL, LPT1_1, &lpss_info_config) },
	{ }
	};
	MODULE_DEVICE_TABLE(pci, pxa2xx_spi_pci_devices);

	static struct pci_driver pxa2xx_spi_pci_driver = {
	.name = "pxa2xx_spi_pci",
	.id_table = pxa2xx_spi_pci_devices,
	.driver = {
	.pm = pm_ptr(&pxa2xx_spi_pm_ops),
	},
	.probe = pxa2xx_spi_pci_probe,
	.remove = pxa2xx_spi_pci_remove,
	};

	module_pci_driver(pxa2xx_spi_pci_driver);

	MODULE_DESCRIPTION("CE4100/LPSS PCI-SPI glue code for PXA's driver");
	MODULE_LICENSE("GPL v2");
	MODULE_IMPORT_NS(SPI_PXA2xx);
	MODULE_AUTHOR("Sebastian Andrzej Siewior <bigeasy@linutronix.de>");