1 files changed, 686 insertions, 0 deletions

diff --git a/drivers/media/pci/mgb4/mgb4_core.c b/drivers/media/pci/mgb4/mgb4_core.c
new file mode 100644
index 000000000000..3efb33fbf40c
--- /dev/null
+++ b/drivers/media/pci/mgb4/mgb4_core.c
@@ -0,0 +1,686 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * This is the driver for the MGB4 video grabber card by Digiteq Automotive.
+ *
+ * Copyright (C) 2021-2023 Digiteq Automotive
+ *     author: Martin Tuma <martin.tuma@digiteqautomotive.com>
+ *
+ * This is the main driver module. The DMA, I2C and SPI sub-drivers are
+ * initialized here and the input/output v4l2 devices are created.
+ *
+ * The mgb4 card uses different expansion modules for different video sources
+ * (GMSL and FPDL3 for now) so in probe() we detect the module type based on
+ * what we see on the I2C bus and check if it matches the FPGA bitstream (there
+ * are different bitstreams for different expansion modules). When no expansion
+ * module is present, we still let the driver initialize to allow flashing of
+ * the FPGA firmware using the SPI FLASH device. No v4l2 video devices are
+ * created in this case.
+ */
+
+#include <linux/types.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/platform_device.h>
+#include <linux/clk.h>
+#include <linux/clk-provider.h>
+#include <linux/clkdev.h>
+#include <linux/i2c.h>
+#include <linux/delay.h>
+#include <linux/dma/amd_xdma.h>
+#include <linux/platform_data/amd_xdma.h>
+#include <linux/spi/xilinx_spi.h>
+#include <linux/mtd/mtd.h>
+#include <linux/hwmon.h>
+#include <linux/debugfs.h>
+#include "mgb4_dma.h"
+#include "mgb4_i2c.h"
+#include "mgb4_sysfs.h"
+#include "mgb4_vout.h"
+#include "mgb4_vin.h"
+#include "mgb4_trigger.h"
+#include "mgb4_core.h"
+
+#define MGB4_USER_IRQS 16
+
+ATTRIBUTE_GROUPS(mgb4_pci);
+
+static int flashid;
+
+static struct xdma_chan_info h2c_chan_info = {
+	.dir = DMA_MEM_TO_DEV,
+};
+
+static struct xdma_chan_info c2h_chan_info = {
+	.dir = DMA_DEV_TO_MEM,
+};
+
+static struct xspi_platform_data spi_platform_data = {
+	.num_chipselect = 1,
+	.bits_per_word = 8
+};
+
+static const struct i2c_board_info extender_info = {
+	I2C_BOARD_INFO("extender", 0x21)
+};
+
+#if IS_REACHABLE(CONFIG_HWMON)
+static umode_t temp_is_visible(const void *data, enum hwmon_sensor_types type,
+			       u32 attr, int channel)
+{
+	if (type == hwmon_temp &&
+	    (attr == hwmon_temp_input || attr == hwmon_temp_label))
+		return 0444;
+	else
+		return 0;
+}
+
+static int temp_read(struct device *dev, enum hwmon_sensor_types type, u32 attr,
+		     int channel, long *val)
+{
+	struct mgb4_dev *mgbdev = dev_get_drvdata(dev);
+	u32 val10, raw;
+
+	if (type != hwmon_temp || attr != hwmon_temp_input)
+		return -EOPNOTSUPP;
+
+	raw = mgb4_read_reg(&mgbdev->video, 0xD0);
+	/* register value -> Celsius degrees formula given by Xilinx */
+	val10 = ((((raw >> 20) & 0xFFF) * 503975) - 1118822400) / 409600;
+	*val = val10 * 100;
+
+	return 0;
+}
+
+static int temp_read_string(struct device *dev, enum hwmon_sensor_types type,
+			    u32 attr, int channel, const char **str)
+{
+	if (type != hwmon_temp || attr != hwmon_temp_label)
+		return -EOPNOTSUPP;
+
+	*str = "FPGA Temperature";
+
+	return 0;
+}
+
+static const struct hwmon_ops temp_ops = {
+	.is_visible = temp_is_visible,
+	.read = temp_read,
+	.read_string = temp_read_string
+};
+
+static const struct hwmon_channel_info *temp_channel_info[] = {
+	HWMON_CHANNEL_INFO(temp, HWMON_T_INPUT | HWMON_T_LABEL),
+	NULL
+};
+
+static const struct hwmon_chip_info temp_chip_info = {
+	.ops = &temp_ops,
+	.info = temp_channel_info,
+};
+#endif
+
+static int match_i2c_adap(struct device *dev, void *data)
+{
+	return i2c_verify_adapter(dev) ? 1 : 0;
+}
+
+static struct i2c_adapter *get_i2c_adap(struct platform_device *pdev)
+{
+	struct device *dev;
+
+	mutex_lock(&pdev->dev.mutex);
+	dev = device_find_child(&pdev->dev, NULL, match_i2c_adap);
+	mutex_unlock(&pdev->dev.mutex);
+
+	return dev ? to_i2c_adapter(dev) : NULL;
+}
+
+static int match_spi_adap(struct device *dev, void *data)
+{
+	return to_spi_device(dev) ? 1 : 0;
+}
+
+static struct spi_master *get_spi_adap(struct platform_device *pdev)
+{
+	struct device *dev;
+
+	mutex_lock(&pdev->dev.mutex);
+	dev = device_find_child(&pdev->dev, NULL, match_spi_adap);
+	mutex_unlock(&pdev->dev.mutex);
+
+	return dev ? container_of(dev, struct spi_master, dev) : NULL;
+}
+
+static int init_spi(struct mgb4_dev *mgbdev)
+{
+	struct resource spi_resources[] = {
+		{
+			.start	= 0x400,
+			.end	= 0x47f,
+			.flags	= IORESOURCE_MEM,
+			.name	= "io-memory",
+		},
+		{
+			.start	= 14,
+			.end	= 14,
+			.flags	= IORESOURCE_IRQ,
+			.name	= "irq",
+		},
+	};
+	struct spi_board_info spi_info = {
+		.max_speed_hz = 10000000,
+		.modalias = "m25p80",
+		.chip_select = 0,
+		.mode = SPI_MODE_3,
+	};
+	struct pci_dev *pdev = mgbdev->pdev;
+	struct device *dev = &pdev->dev;
+	struct spi_master *master;
+	struct spi_device *spi_dev;
+	u32 irq;
+	int rv, id;
+	resource_size_t mapbase = pci_resource_start(pdev, MGB4_MGB4_BAR_ID);
+
+	request_module("platform:xilinx_spi");
+
+	irq = xdma_get_user_irq(mgbdev->xdev, 14);
+	xdma_enable_user_irq(mgbdev->xdev, irq);
+
+	spi_resources[0].parent = &pdev->resource[MGB4_MGB4_BAR_ID];
+	spi_resources[0].start += mapbase;
+	spi_resources[0].end += mapbase;
+	spi_resources[1].start = irq;
+	spi_resources[1].end = irq;
+
+	id = pci_dev_id(pdev);
+	mgbdev->spi_pdev = platform_device_register_resndata(dev, "xilinx_spi",
+							     id, spi_resources,
+							     ARRAY_SIZE(spi_resources),
+							     &spi_platform_data,
+							     sizeof(spi_platform_data));
+	if (IS_ERR(mgbdev->spi_pdev)) {
+		dev_err(dev, "failed to register SPI device\n");
+		return PTR_ERR(mgbdev->spi_pdev);
+	}
+
+	master = get_spi_adap(mgbdev->spi_pdev);
+	if (!master) {
+		dev_err(dev, "failed to get SPI adapter\n");
+		rv = -EINVAL;
+		goto err_pdev;
+	}
+
+	snprintf(mgbdev->fw_part_name, sizeof(mgbdev->fw_part_name),
+		 "mgb4-fw.%d", flashid);
+	mgbdev->partitions[0].name = mgbdev->fw_part_name;
+	mgbdev->partitions[0].size = 0x400000;
+	mgbdev->partitions[0].offset = 0x400000;
+	mgbdev->partitions[0].mask_flags = 0;
+
+	snprintf(mgbdev->data_part_name, sizeof(mgbdev->data_part_name),
+		 "mgb4-data.%d", flashid);
+	mgbdev->partitions[1].name = mgbdev->data_part_name;
+	mgbdev->partitions[1].size = 0x10000;
+	mgbdev->partitions[1].offset = 0xFF0000;
+	mgbdev->partitions[1].mask_flags = MTD_CAP_NORFLASH;
+
+	snprintf(mgbdev->flash_name, sizeof(mgbdev->flash_name),
+		 "mgb4-flash.%d", flashid);
+	mgbdev->flash_data.name = mgbdev->flash_name;
+	mgbdev->flash_data.parts = mgbdev->partitions;
+	mgbdev->flash_data.nr_parts = ARRAY_SIZE(mgbdev->partitions);
+	mgbdev->flash_data.type = "spi-nor";
+
+	spi_info.platform_data = &mgbdev->flash_data;
+
+	spi_dev = spi_new_device(master, &spi_info);
+	put_device(&master->dev);
+	if (!spi_dev) {
+		dev_err(dev, "failed to create MTD device\n");
+		rv = -EINVAL;
+		goto err_pdev;
+	}
+
+	return 0;
+
+err_pdev:
+	platform_device_unregister(mgbdev->spi_pdev);
+
+	return rv;
+}
+
+static void free_spi(struct mgb4_dev *mgbdev)
+{
+	platform_device_unregister(mgbdev->spi_pdev);
+}
+
+static int init_i2c(struct mgb4_dev *mgbdev)
+{
+	struct resource i2c_resources[] = {
+		{
+			.start	= 0x200,
+			.end	= 0x3ff,
+			.flags	= IORESOURCE_MEM,
+			.name	= "io-memory",
+		},
+		{
+			.start	= 15,
+			.end	= 15,
+			.flags	= IORESOURCE_IRQ,
+			.name	= "irq",
+		},
+	};
+	struct pci_dev *pdev = mgbdev->pdev;
+	struct device *dev = &pdev->dev;
+	char clk_name[16];
+	u32 irq;
+	int rv, id;
+	resource_size_t mapbase = pci_resource_start(pdev, MGB4_MGB4_BAR_ID);
+
+	request_module("platform:xiic-i2c");
+
+	irq = xdma_get_user_irq(mgbdev->xdev, 15);
+	xdma_enable_user_irq(mgbdev->xdev, irq);
+
+	i2c_resources[0].parent = &pdev->resource[MGB4_MGB4_BAR_ID];
+	i2c_resources[0].start += mapbase;
+	i2c_resources[0].end += mapbase;
+	i2c_resources[1].start = irq;
+	i2c_resources[1].end = irq;
+
+	id = pci_dev_id(pdev);
+
+	/* create dummy clock required by the xiic-i2c adapter */
+	snprintf(clk_name, sizeof(clk_name), "xiic-i2c.%d", id);
+	mgbdev->i2c_clk = clk_hw_register_fixed_rate(NULL, clk_name, NULL,
+						     0, 125000000);
+	if (IS_ERR(mgbdev->i2c_clk)) {
+		dev_err(dev, "failed to register I2C clock\n");
+		return PTR_ERR(mgbdev->i2c_clk);
+	}
+	mgbdev->i2c_cl = clkdev_hw_create(mgbdev->i2c_clk, NULL, "xiic-i2c.%d",
+					  id);
+	if (!mgbdev->i2c_cl) {
+		dev_err(dev, "failed to register I2C clockdev\n");
+		rv = -ENOMEM;
+		goto err_clk;
+	}
+
+	mgbdev->i2c_pdev = platform_device_register_resndata(dev, "xiic-i2c",
+							     id, i2c_resources,
+							     ARRAY_SIZE(i2c_resources),
+							     NULL, 0);
+	if (IS_ERR(mgbdev->i2c_pdev)) {
+		dev_err(dev, "failed to register I2C device\n");
+		rv = PTR_ERR(mgbdev->i2c_pdev);
+		goto err_clkdev;
+	}
+
+	mgbdev->i2c_adap = get_i2c_adap(mgbdev->i2c_pdev);
+	if (!mgbdev->i2c_adap) {
+		dev_err(dev, "failed to get I2C adapter\n");
+		rv = -EINVAL;
+		goto err_pdev;
+	}
+
+	mutex_init(&mgbdev->i2c_lock);
+
+	return 0;
+
+err_pdev:
+	platform_device_unregister(mgbdev->i2c_pdev);
+err_clkdev:
+	clkdev_drop(mgbdev->i2c_cl);
+err_clk:
+	clk_hw_unregister(mgbdev->i2c_clk);
+
+	return rv;
+}
+
+static void free_i2c(struct mgb4_dev *mgbdev)
+{
+	put_device(&mgbdev->i2c_adap->dev);
+	platform_device_unregister(mgbdev->i2c_pdev);
+	clkdev_drop(mgbdev->i2c_cl);
+	clk_hw_unregister(mgbdev->i2c_clk);
+}
+
+static int get_serial_number(struct mgb4_dev *mgbdev)
+{
+	struct device *dev = &mgbdev->pdev->dev;
+	struct mtd_info *mtd;
+	size_t rs;
+	int rv;
+
+	mgbdev->serial_number = 0;
+
+	mtd = get_mtd_device_nm(mgbdev->data_part_name);
+	if (IS_ERR(mtd)) {
+		dev_warn(dev, "failed to get data MTD device\n");
+		return -ENOENT;
+	}
+	rv = mtd_read(mtd, 0, sizeof(mgbdev->serial_number), &rs,
+		      (u_char *)&mgbdev->serial_number);
+	put_mtd_device(mtd);
+	if (rv < 0 || rs != sizeof(mgbdev->serial_number)) {
+		dev_warn(dev, "error reading MTD device\n");
+		return -EIO;
+	}
+
+	return 0;
+}
+
+static int get_module_version(struct mgb4_dev *mgbdev)
+{
+	struct device *dev = &mgbdev->pdev->dev;
+	struct mgb4_i2c_client extender;
+	s32 version;
+	u32 fw_version;
+	int rv;
+
+	rv = mgb4_i2c_init(&extender, mgbdev->i2c_adap, &extender_info, 8);
+	if (rv < 0) {
+		dev_err(dev, "failed to create extender I2C device\n");
+		return rv;
+	}
+	version = mgb4_i2c_read_byte(&extender, 0x00);
+	mgb4_i2c_free(&extender);
+	if (version < 0) {
+		dev_err(dev, "error reading module version\n");
+		return -EIO;
+	}
+
+	mgbdev->module_version = ~((u32)version) & 0xff;
+	if (!(MGB4_IS_FPDL3(mgbdev) || MGB4_IS_GMSL(mgbdev))) {
+		dev_err(dev, "unknown module type\n");
+		return -EINVAL;
+	}
+	fw_version = mgb4_read_reg(&mgbdev->video, 0xC4);
+	if (fw_version >> 24 != mgbdev->module_version >> 4) {
+		dev_err(dev, "module/firmware type mismatch\n");
+		return -EINVAL;
+	}
+
+	dev_info(dev, "%s module detected\n",
+		 MGB4_IS_FPDL3(mgbdev) ? "FPDL3" : "GMSL");
+
+	return 0;
+}
+
+static int map_regs(struct pci_dev *pdev, struct resource *res,
+		    struct mgb4_regs *regs)
+{
+	int rv;
+	resource_size_t mapbase = pci_resource_start(pdev, MGB4_MGB4_BAR_ID);
+
+	res->start += mapbase;
+	res->end += mapbase;
+
+	rv = mgb4_regs_map(res, regs);
+	if (rv < 0) {
+		dev_err(&pdev->dev, "failed to map %s registers\n", res->name);
+		return rv;
+	}
+
+	return 0;
+}
+
+static int init_xdma(struct mgb4_dev *mgbdev)
+{
+	struct xdma_platdata data;
+	struct resource res[2] = { 0 };
+	struct dma_slave_map *map;
+	struct pci_dev *pdev = mgbdev->pdev;
+	struct device *dev = &pdev->dev;
+	int i;
+
+	res[0].start = pci_resource_start(pdev, MGB4_XDMA_BAR_ID);
+	res[0].end = pci_resource_end(pdev, MGB4_XDMA_BAR_ID);
+	res[0].flags = IORESOURCE_MEM;
+	res[0].parent = &pdev->resource[MGB4_XDMA_BAR_ID];
+	res[1].start = pci_irq_vector(pdev, 0);
+	res[1].end = res[1].start + MGB4_VIN_DEVICES + MGB4_VOUT_DEVICES
+		     + MGB4_USER_IRQS - 1;
+	res[1].flags = IORESOURCE_IRQ;
+
+	data.max_dma_channels = MGB4_VIN_DEVICES + MGB4_VOUT_DEVICES;
+	data.device_map = mgbdev->slave_map;
+	data.device_map_cnt = MGB4_VIN_DEVICES + MGB4_VOUT_DEVICES;
+
+	for (i = 0; i < MGB4_VIN_DEVICES; i++) {
+		sprintf(mgbdev->channel_names[i], "c2h%d", i);
+		map = &data.device_map[i];
+		map->slave = mgbdev->channel_names[i];
+		map->devname = dev_name(dev);
+		map->param = XDMA_FILTER_PARAM(&c2h_chan_info);
+	}
+	for (i = 0; i < MGB4_VOUT_DEVICES; i++) {
+		sprintf(mgbdev->channel_names[i + MGB4_VIN_DEVICES], "h2c%d", i);
+		map = &data.device_map[i + MGB4_VIN_DEVICES];
+		map->slave = mgbdev->channel_names[i + MGB4_VIN_DEVICES];
+		map->devname = dev_name(dev);
+		map->param = XDMA_FILTER_PARAM(&h2c_chan_info);
+	}
+
+	mgbdev->xdev = platform_device_register_resndata(dev, "xdma",
+							 PLATFORM_DEVID_AUTO, res,
+							 2, &data, sizeof(data));
+	if (IS_ERR(mgbdev->xdev)) {
+		dev_err(dev, "failed to register XDMA device\n");
+		return PTR_ERR(mgbdev->xdev);
+	}
+
+	return 0;
+}
+
+static void free_xdma(struct mgb4_dev *mgbdev)
+{
+	platform_device_unregister(mgbdev->xdev);
+}
+
+static int mgb4_probe(struct pci_dev *pdev, const struct pci_device_id *id)
+{
+	int i, rv;
+	struct mgb4_dev *mgbdev;
+	struct resource video = {
+		.start	= 0x0,
+		.end	= 0x100,
+		.flags	= IORESOURCE_MEM,
+		.name	= "mgb4-video",
+	};
+	struct resource cmt = {
+		.start	= 0x1000,
+		.end	= 0x1800,
+		.flags	= IORESOURCE_MEM,
+		.name	= "mgb4-cmt",
+	};
+	int irqs = pci_msix_vec_count(pdev);
+
+	mgbdev = kzalloc(sizeof(*mgbdev), GFP_KERNEL);
+	if (!mgbdev)
+		return -ENOMEM;
+
+	mgbdev->pdev = pdev;
+	pci_set_drvdata(pdev, mgbdev);
+
+	/* PCIe related stuff */
+	rv = pci_enable_device(pdev);
+	if (rv) {
+		dev_err(&pdev->dev, "error enabling PCI device\n");
+		goto err_mgbdev;
+	}
+
+	rv = pcie_capability_set_word(pdev, PCI_EXP_DEVCTL, PCI_EXP_DEVCTL_RELAX_EN);
+	if (rv)
+		dev_warn(&pdev->dev, "error enabling PCIe relaxed ordering\n");
+	rv = pcie_capability_set_word(pdev, PCI_EXP_DEVCTL, PCI_EXP_DEVCTL_EXT_TAG);
+	if (rv)
+		dev_warn(&pdev->dev, "error enabling PCIe extended tag field\n");
+	rv = pcie_set_readrq(pdev, 512);
+	if (rv)
+		dev_warn(&pdev->dev, "error setting PCIe max. memory read size\n");
+	pci_set_master(pdev);
+
+	rv = pci_alloc_irq_vectors(pdev, irqs, irqs, PCI_IRQ_MSIX);
+	if (rv < 0) {
+		dev_err(&pdev->dev, "error allocating MSI-X IRQs\n");
+		goto err_enable_pci;
+	}
+
+	rv = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
+	if (rv) {
+		dev_err(&pdev->dev, "error setting DMA mask\n");
+		goto err_enable_pci;
+	}
+
+	/* DMA + IRQ engine */
+	rv = init_xdma(mgbdev);
+	if (rv)
+		goto err_alloc_irq;
+	rv = mgb4_dma_channel_init(mgbdev);
+	if (rv)
+		goto err_dma_chan;
+
+	/* mgb4 video registers */
+	rv = map_regs(pdev, &video, &mgbdev->video);
+	if (rv < 0)
+		goto err_dma_chan;
+	/* mgb4 cmt registers */
+	rv = map_regs(pdev, &cmt, &mgbdev->cmt);
+	if (rv < 0)
+		goto err_video_regs;
+
+	/* SPI FLASH */
+	rv = init_spi(mgbdev);
+	if (rv < 0)
+		goto err_cmt_regs;
+
+	/* I2C controller */
+	rv = init_i2c(mgbdev);
+	if (rv < 0)
+		goto err_spi;
+
+	/* PCI card related sysfs attributes */
+	rv = device_add_groups(&pdev->dev, mgb4_pci_groups);
+	if (rv < 0)
+		goto err_i2c;
+
+#if IS_REACHABLE(CONFIG_HWMON)
+	/* HWmon (card temperature) */
+	mgbdev->hwmon_dev = hwmon_device_register_with_info(&pdev->dev, "mgb4",
+							    mgbdev,
+							    &temp_chip_info,
+							    NULL);
+#endif
+
+#ifdef CONFIG_DEBUG_FS
+	mgbdev->debugfs = debugfs_create_dir(dev_name(&pdev->dev), NULL);
+#endif
+
+	/* Get card serial number. On systems without MTD flash support we may
+	 * get an error thus ignore the return value. An invalid serial number
+	 * should not break anything...
+	 */
+	if (get_serial_number(mgbdev) < 0)
+		dev_warn(&pdev->dev, "error reading card serial number\n");
+
+	/* Get module type. If no valid module is found, skip the video device
+	 * creation part but do not exit with error to allow flashing the card.
+	 */
+	rv = get_module_version(mgbdev);
+	if (rv < 0)
+		goto exit;
+
+	/* Video input v4l2 devices */
+	for (i = 0; i < MGB4_VIN_DEVICES; i++)
+		mgbdev->vin[i] = mgb4_vin_create(mgbdev, i);
+
+	/* Video output v4l2 devices */
+	for (i = 0; i < MGB4_VOUT_DEVICES; i++)
+		mgbdev->vout[i] = mgb4_vout_create(mgbdev, i);
+
+	/* Triggers */
+	mgbdev->indio_dev = mgb4_trigger_create(mgbdev);
+
+exit:
+	flashid++;
+
+	return 0;
+
+err_i2c:
+	free_i2c(mgbdev);
+err_spi:
+	free_spi(mgbdev);
+err_cmt_regs:
+	mgb4_regs_free(&mgbdev->cmt);
+err_video_regs:
+	mgb4_regs_free(&mgbdev->video);
+err_dma_chan:
+	mgb4_dma_channel_free(mgbdev);
+	free_xdma(mgbdev);
+err_alloc_irq:
+	pci_disable_msix(pdev);
+err_enable_pci:
+	pci_disable_device(pdev);
+err_mgbdev:
+	kfree(mgbdev);
+
+	return rv;
+}
+
+static void mgb4_remove(struct pci_dev *pdev)
+{
+	struct mgb4_dev *mgbdev = pci_get_drvdata(pdev);
+	int i;
+
+#ifdef CONFIG_DEBUG_FS
+	debugfs_remove_recursive(mgbdev->debugfs);
+#endif
+#if IS_REACHABLE(CONFIG_HWMON)
+	hwmon_device_unregister(mgbdev->hwmon_dev);
+#endif
+
+	if (mgbdev->indio_dev)
+		mgb4_trigger_free(mgbdev->indio_dev);
+
+	for (i = 0; i < MGB4_VOUT_DEVICES; i++)
+		if (mgbdev->vout[i])
+			mgb4_vout_free(mgbdev->vout[i]);
+	for (i = 0; i < MGB4_VIN_DEVICES; i++)
+		if (mgbdev->vin[i])
+			mgb4_vin_free(mgbdev->vin[i]);
+
+	device_remove_groups(&mgbdev->pdev->dev, mgb4_pci_groups);
+	free_spi(mgbdev);
+	free_i2c(mgbdev);
+	mgb4_regs_free(&mgbdev->video);
+	mgb4_regs_free(&mgbdev->cmt);
+
+	mgb4_dma_channel_free(mgbdev);
+	free_xdma(mgbdev);
+
+	pci_disable_msix(mgbdev->pdev);
+	pci_disable_device(mgbdev->pdev);
+
+	kfree(mgbdev);
+}
+
+static const struct pci_device_id mgb4_pci_ids[] = {
+	{ PCI_DEVICE(0x1ed8, 0x0101), },
+	{ 0, }
+};
+MODULE_DEVICE_TABLE(pci, mgb4_pci_ids);
+
+static struct pci_driver mgb4_pci_driver = {
+	.name = KBUILD_MODNAME,
+	.id_table = mgb4_pci_ids,
+	.probe = mgb4_probe,
+	.remove = mgb4_remove,
+};
+
+module_pci_driver(mgb4_pci_driver);
+
+MODULE_AUTHOR("Digiteq Automotive s.r.o.");
+MODULE_DESCRIPTION("Digiteq Automotive MGB4 Driver");
+MODULE_LICENSE("GPL");
+MODULE_SOFTDEP("pre: platform:xiic-i2c platform:xilinx_spi spi-nor");