0848c94fb4
Currently the MFD core supports remapping MFD cell interrupts using an irqdomain but only if the MFD is being instantiated using device tree and only if the device tree bindings use the pattern of registering IPs in the device tree with compatible properties. This will be actively harmful for drivers which support non-DT platforms and use this pattern for their DT bindings as it will mean that the core will silently change remapping behaviour and it is also limiting for drivers which don't do DT with this particular pattern. There is also a potential fragility if there are interrupts not associated with MFD cells and all the cells are omitted from the device tree for some reason. Instead change the code to take an IRQ domain as an optional argument, allowing drivers to take the decision about the parent domain for their interrupts. The one current user of this feature is ab8500-core, it has the domain lookup pushed out into the driver. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
116 lines
3.1 KiB
C
116 lines
3.1 KiB
C
/*
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* RDC321x MFD southbrige driver
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*
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* Copyright (C) 2007-2010 Florian Fainelli <florian@openwrt.org>
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* Copyright (C) 2010 Bernhard Loos <bernhardloos@googlemail.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 as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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*/
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#include <linux/init.h>
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/platform_device.h>
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#include <linux/pci.h>
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#include <linux/mfd/core.h>
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#include <linux/mfd/rdc321x.h>
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static struct rdc321x_wdt_pdata rdc321x_wdt_pdata;
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static struct resource rdc321x_wdt_resource[] = {
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{
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.name = "wdt-reg",
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.start = RDC321X_WDT_CTRL,
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.end = RDC321X_WDT_CTRL + 0x3,
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.flags = IORESOURCE_IO,
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}
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};
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static struct rdc321x_gpio_pdata rdc321x_gpio_pdata = {
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.max_gpios = RDC321X_MAX_GPIO,
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};
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static struct resource rdc321x_gpio_resources[] = {
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{
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.name = "gpio-reg1",
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.start = RDC321X_GPIO_CTRL_REG1,
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.end = RDC321X_GPIO_CTRL_REG1 + 0x7,
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.flags = IORESOURCE_IO,
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}, {
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.name = "gpio-reg2",
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.start = RDC321X_GPIO_CTRL_REG2,
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.end = RDC321X_GPIO_CTRL_REG2 + 0x7,
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.flags = IORESOURCE_IO,
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}
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};
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static struct mfd_cell rdc321x_sb_cells[] = {
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{
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.name = "rdc321x-wdt",
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.resources = rdc321x_wdt_resource,
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.num_resources = ARRAY_SIZE(rdc321x_wdt_resource),
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.platform_data = &rdc321x_wdt_pdata,
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.pdata_size = sizeof(rdc321x_wdt_pdata),
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}, {
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.name = "rdc321x-gpio",
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.resources = rdc321x_gpio_resources,
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.num_resources = ARRAY_SIZE(rdc321x_gpio_resources),
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.platform_data = &rdc321x_gpio_pdata,
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.pdata_size = sizeof(rdc321x_gpio_pdata),
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},
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};
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static int __devinit rdc321x_sb_probe(struct pci_dev *pdev,
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const struct pci_device_id *ent)
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{
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int err;
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err = pci_enable_device(pdev);
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if (err) {
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dev_err(&pdev->dev, "failed to enable device\n");
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return err;
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}
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rdc321x_gpio_pdata.sb_pdev = pdev;
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rdc321x_wdt_pdata.sb_pdev = pdev;
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return mfd_add_devices(&pdev->dev, -1,
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rdc321x_sb_cells, ARRAY_SIZE(rdc321x_sb_cells),
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NULL, 0, NULL);
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}
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static void __devexit rdc321x_sb_remove(struct pci_dev *pdev)
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{
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mfd_remove_devices(&pdev->dev);
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}
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static DEFINE_PCI_DEVICE_TABLE(rdc321x_sb_table) = {
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{ PCI_DEVICE(PCI_VENDOR_ID_RDC, PCI_DEVICE_ID_RDC_R6030) },
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{}
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};
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MODULE_DEVICE_TABLE(pci, rdc321x_sb_table);
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static struct pci_driver rdc321x_sb_driver = {
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.name = "RDC321x Southbridge",
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.id_table = rdc321x_sb_table,
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.probe = rdc321x_sb_probe,
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.remove = __devexit_p(rdc321x_sb_remove),
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};
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module_pci_driver(rdc321x_sb_driver);
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MODULE_AUTHOR("Florian Fainelli <florian@openwrt.org>");
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MODULE_LICENSE("GPL");
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MODULE_DESCRIPTION("RDC R-321x MFD southbridge driver");
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