diff options
Diffstat (limited to 'target/linux/rdc/patches-2.6.30/001-rdc321x_mfd_southbridge.patch')
| -rw-r--r-- | target/linux/rdc/patches-2.6.30/001-rdc321x_mfd_southbridge.patch | 205 |
1 files changed, 205 insertions, 0 deletions
diff --git a/target/linux/rdc/patches-2.6.30/001-rdc321x_mfd_southbridge.patch b/target/linux/rdc/patches-2.6.30/001-rdc321x_mfd_southbridge.patch new file mode 100644 index 0000000000..a5c6736506 --- /dev/null +++ b/target/linux/rdc/patches-2.6.30/001-rdc321x_mfd_southbridge.patch @@ -0,0 +1,205 @@ +This patch adds a new MFD driver for the RDC321x southbridge. This southbridge +is always present in the RDC321x System-on-a-Chip and provides access to some +GPIOs as well as a watchdog. Access to these two functions is done using the +southbridge PCI device configuration space. + +Signed-off-by: Florian Fainelli <florian@openwrt.org> +--- +Changes from v2: +- pass the pci_dev pointer to MFD cell drivers as platform_data +- remove the printk(KERN_ERR and use dev_err instead +- removed pci_dev accessors +- use DEFINE_PCI_DEVICE_TABLE + +Index: linux-2.6.30.10/drivers/mfd/Kconfig +=================================================================== +--- linux-2.6.30.10.orig/drivers/mfd/Kconfig 2010-04-28 10:48:54.000000000 +0200 ++++ linux-2.6.30.10/drivers/mfd/Kconfig 2010-04-28 10:49:44.000000000 +0200 +@@ -241,6 +241,15 @@ + Say yes here if you want to include support GPIO for pins on + the PCF50633 chip. + ++config MFD_RDC321X ++ tristate "Support for RDC-R321x southbridge" ++ select MFD_CORE ++ depends on PCI ++ help ++ Say yes here if you want to have support for the RDC R-321x SoC ++ southbridge which provides access to GPIOs and Watchdog using the ++ southbridge PCI device configuration space. ++ + endmenu + + menu "Multimedia Capabilities Port drivers" +Index: linux-2.6.30.10/drivers/mfd/Makefile +=================================================================== +--- linux-2.6.30.10.orig/drivers/mfd/Makefile 2010-04-28 10:48:54.000000000 +0200 ++++ linux-2.6.30.10/drivers/mfd/Makefile 2010-04-28 10:49:02.000000000 +0200 +@@ -40,4 +40,6 @@ + + obj-$(CONFIG_MFD_PCF50633) += pcf50633-core.o + obj-$(CONFIG_PCF50633_ADC) += pcf50633-adc.o +-obj-$(CONFIG_PCF50633_GPIO) += pcf50633-gpio.o +\ No newline at end of file ++obj-$(CONFIG_PCF50633_GPIO) += pcf50633-gpio.o ++ ++obj-$(CONFIG_MFD_RDC321X) += rdc321x-southbridge.o +Index: linux-2.6.30.10/drivers/mfd/rdc321x-southbridge.c +=================================================================== +--- /dev/null 1970-01-01 00:00:00.000000000 +0000 ++++ linux-2.6.30.10/drivers/mfd/rdc321x-southbridge.c 2010-04-28 10:49:02.000000000 +0200 +@@ -0,0 +1,123 @@ ++/* ++ * RDC321x MFD southbrige driver ++ * ++ * Copyright (C) 2007-2010 Florian Fainelli <florian@openwrt.org> ++ * Copyright (C) 2010 Bernhard Loos <bernhardloos@googlemail.com> ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License as published by ++ * the Free Software Foundation; either version 2 of the License, or ++ * (at your option) any later version. ++ * ++ * This program is distributed in the hope that 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. ++ * ++ * You should have received a copy of the GNU General Public License ++ * along with this program; if not, write to the Free Software ++ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. ++ * ++ */ ++#include <linux/init.h> ++#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_MEM, ++ } ++}; ++ ++static struct rdc321x_gpio_pdata rdc321x_gpio_pdata = { ++ .max_gpios = RDC321X_MAX_GPIO, ++}; ++ ++static struct resource rdc321x_gpio_resources[] = { ++ { ++ .name = "gpio-reg1", ++ .start = RDC321X_GPIO_CTRL_REG1, ++ .end = RDC321X_GPIO_CTRL_REG1 + 0x7, ++ .flags = IORESOURCE_MEM, ++ }, { ++ .name = "gpio-reg2", ++ .start = RDC321X_GPIO_CTRL_REG2, ++ .end = RDC321X_GPIO_CTRL_REG2 + 0x7, ++ .flags = IORESOURCE_MEM, ++ } ++}; ++ ++static struct mfd_cell rdc321x_sb_cells[] = { ++ { ++ .name = "rdc321x-wdt", ++ .resources = rdc321x_wdt_resource, ++ .num_resources = ARRAY_SIZE(rdc321x_wdt_resource), ++ .driver_data = &rdc321x_wdt_pdata, ++ }, { ++ .name = "rdc321x-gpio", ++ .resources = rdc321x_gpio_resources, ++ .num_resources = ARRAY_SIZE(rdc321x_gpio_resources), ++ .driver_data = &rdc321x_gpio_pdata, ++ }, ++}; ++ ++static int __devinit 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\n"); ++ return err; ++ } ++ ++ rdc321x_gpio_pdata.sb_pdev = pdev; ++ rdc321x_wdt_pdata.sb_pdev = pdev; ++ ++ return mfd_add_devices(&pdev->dev, -1, ++ rdc321x_sb_cells, ARRAY_SIZE(rdc321x_sb_cells), NULL, 0); ++} ++ ++static void __devexit rdc321x_sb_remove(struct pci_dev *pdev) ++{ ++ mfd_remove_devices(&pdev->dev); ++} ++ ++static DEFINE_PCI_DEVICE_TABLE(rdc321x_sb_table) = { ++ { PCI_DEVICE(PCI_VENDOR_ID_RDC, PCI_DEVICE_ID_RDC_R6030) }, ++ {} ++}; ++ ++static struct pci_driver rdc321x_sb_driver = { ++ .name = "RDC321x Southbridge", ++ .id_table = rdc321x_sb_table, ++ .probe = rdc321x_sb_probe, ++ .remove = __devexit_p(rdc321x_sb_remove), ++}; ++ ++static int __init rdc321x_sb_init(void) ++{ ++ return pci_register_driver(&rdc321x_sb_driver); ++} ++ ++static void __exit rdc321x_sb_exit(void) ++{ ++ pci_unregister_driver(&rdc321x_sb_driver); ++} ++ ++module_init(rdc321x_sb_init); ++module_exit(rdc321x_sb_exit); ++ ++MODULE_AUTHOR("Florian Fainelli <florian@openwrt.org>"); ++MODULE_LICENSE("GPL"); ++MODULE_DESCRIPTION("RDC R-321x MFD southbridge driver"); +Index: linux-2.6.30.10/include/linux/mfd/rdc321x.h +=================================================================== +--- /dev/null 1970-01-01 00:00:00.000000000 +0000 ++++ linux-2.6.30.10/include/linux/mfd/rdc321x.h 2010-04-28 10:49:02.000000000 +0200 +@@ -0,0 +1,26 @@ ++#ifndef __RDC321X_MFD_H ++#define __RDC321X_MFD_H ++ ++#include <linux/types.h> ++#include <linux/pci.h> ++ ++/* Offsets to be accessed in the southbridge PCI ++ * device configuration register */ ++#define RDC321X_WDT_CTRL 0x44 ++#define RDC321X_GPIO_CTRL_REG1 0x48 ++#define RDC321X_GPIO_DATA_REG1 0x4c ++#define RDC321X_GPIO_CTRL_REG2 0x84 ++#define RDC321X_GPIO_DATA_REG2 0x88 ++ ++#define RDC321X_MAX_GPIO 58 ++ ++struct rdc321x_gpio_pdata { ++ struct pci_dev *sb_pdev; ++ unsigned max_gpios; ++}; ++ ++struct rdc321x_wdt_pdata { ++ struct pci_dev *sb_pdev; ++}; ++ ++#endif /* __RDC321X_MFD_H */ |