Eric Lee / smarc-fsl-linux-kernel

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drivers/mfd/rdc321x-southbridge.c 2.35 KB
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d7d243b52   Eric Lee   SMARC-iMX8MQ Linu... 
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  // SPDX-License-Identifier: GPL-2.0-or-later
  /*
   * RDC321x MFD southbridge driver
   *
   * Copyright (C) 2007-2010 Florian Fainelli <florian@openwrt.org>
   * Copyright (C) 2010 Bernhard Loos <bernhardloos@googlemail.com>
   */
  #include <linux/module.h>
  #include <linux/kernel.h>
  #include <linux/platform_device.h>
  #include <linux/pci.h>
  #include <linux/mfd/core.h>
  #include <linux/mfd/rdc321x.h>
  
  static struct rdc321x_wdt_pdata rdc321x_wdt_pdata;
  
  static struct resource rdc321x_wdt_resource[] = {
  	{
  		.name	= "wdt-reg",
  		.start	= RDC321X_WDT_CTRL,
  		.end	= RDC321X_WDT_CTRL + 0x3,
  		.flags	= IORESOURCE_IO,
  	}
  };
  
  static struct rdc321x_gpio_pdata rdc321x_gpio_pdata = {
  	.max_gpios	= RDC321X_NUM_GPIO,
  };
  
  static struct resource rdc321x_gpio_resources[] = {
  	{
  		.name	= "gpio-reg1",
  		.start	= RDC321X_GPIO_CTRL_REG1,
  		.end	= RDC321X_GPIO_CTRL_REG1 + 0x7,
  		.flags	= IORESOURCE_IO,
  	}, {
  		.name	= "gpio-reg2",
  		.start	= RDC321X_GPIO_CTRL_REG2,
  		.end	= RDC321X_GPIO_CTRL_REG2 + 0x7,
  		.flags	= IORESOURCE_IO,
  	}
  };
  
  static const struct mfd_cell rdc321x_sb_cells[] = {
  	{
  		.name		= "rdc321x-wdt",
  		.resources	= rdc321x_wdt_resource,
  		.num_resources	= ARRAY_SIZE(rdc321x_wdt_resource),
  		.platform_data	= &rdc321x_wdt_pdata,
  		.pdata_size	= sizeof(rdc321x_wdt_pdata),
  	}, {
  		.name		= "rdc321x-gpio",
  		.resources	= rdc321x_gpio_resources,
  		.num_resources	= ARRAY_SIZE(rdc321x_gpio_resources),
  		.platform_data	= &rdc321x_gpio_pdata,
  		.pdata_size	= sizeof(rdc321x_gpio_pdata),
  	},
  };
  
  static int rdc321x_sb_probe(struct pci_dev *pdev,
  					const struct pci_device_id *ent)
  {
  	int err;
  
  	err = pci_enable_device(pdev);
  	if (err) {
  		dev_err(&pdev->dev, "failed to enable device
  ");
  		return err;
  	}
  
  	rdc321x_gpio_pdata.sb_pdev = pdev;
  	rdc321x_wdt_pdata.sb_pdev = pdev;
  
  	return devm_mfd_add_devices(&pdev->dev, -1,
  				    rdc321x_sb_cells,
  				    ARRAY_SIZE(rdc321x_sb_cells),
  				    NULL, 0, NULL);
  }
  
  static const struct pci_device_id rdc321x_sb_table[] = {
  	{ PCI_DEVICE(PCI_VENDOR_ID_RDC, PCI_DEVICE_ID_RDC_R6030) },
  	{}
  };
  MODULE_DEVICE_TABLE(pci, rdc321x_sb_table);
  
  static struct pci_driver rdc321x_sb_driver = {
  	.name		= "RDC321x Southbridge",
  	.id_table	= rdc321x_sb_table,
  	.probe		= rdc321x_sb_probe,
  };
  
  module_pci_driver(rdc321x_sb_driver);
  
  MODULE_AUTHOR("Florian Fainelli <florian@openwrt.org>");
  MODULE_LICENSE("GPL");
  MODULE_DESCRIPTION("RDC R-321x MFD southbridge driver");