diff options
Diffstat (limited to 'packages/kexecboot/linux-kexecboot-2.6.24/tosa/0003-Core-MFD-support.patch')
| -rw-r--r-- | packages/kexecboot/linux-kexecboot-2.6.24/tosa/0003-Core-MFD-support.patch | 243 |
1 files changed, 243 insertions, 0 deletions
diff --git a/packages/kexecboot/linux-kexecboot-2.6.24/tosa/0003-Core-MFD-support.patch b/packages/kexecboot/linux-kexecboot-2.6.24/tosa/0003-Core-MFD-support.patch new file mode 100644 index 0000000000..d84a4f7835 --- /dev/null +++ b/packages/kexecboot/linux-kexecboot-2.6.24/tosa/0003-Core-MFD-support.patch @@ -0,0 +1,243 @@ +From a07910753f9965842b6647f0561db125b538f5ed Mon Sep 17 00:00:00 2001 +From: Ian Molton <spyro@f2s.com> +Date: Fri, 4 Jan 2008 18:32:44 +0000 +Subject: [PATCH 03/64] Core MFD support + +This patch provides a common subdevice registration system for MFD type +chips, using platfrom device. + +It also provides a new resource type for IRQs such that a subdevices IRQ may +be computed based on the MFD cores IRQ handler, since many MFDs provide an IRQ +multiplex. +--- + drivers/mfd/Kconfig | 4 ++ + drivers/mfd/Makefile | 2 + + drivers/mfd/mfd-core.c | 116 ++++++++++++++++++++++++++++++++++++++++++++++ + include/linux/ioport.h | 1 + + include/linux/mfd-core.h | 51 ++++++++++++++++++++ + 5 files changed, 174 insertions(+), 0 deletions(-) + create mode 100644 drivers/mfd/mfd-core.c + create mode 100644 include/linux/mfd-core.h + +diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig +index 2571619..1205c89 100644 +--- a/drivers/mfd/Kconfig ++++ b/drivers/mfd/Kconfig +@@ -5,6 +5,10 @@ + menu "Multifunction device drivers" + depends on HAS_IOMEM + ++config MFD_CORE ++ tristate ++ default n ++ + config MFD_SM501 + tristate "Support for Silicon Motion SM501" + ---help--- +diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile +index 5143209..6c20064 100644 +--- a/drivers/mfd/Makefile ++++ b/drivers/mfd/Makefile +@@ -4,6 +4,8 @@ + + obj-$(CONFIG_MFD_SM501) += sm501.o + ++obj-$(CONFIG_MFD_CORE) += mfd-core.o ++ + obj-$(CONFIG_MCP) += mcp-core.o + obj-$(CONFIG_MCP_SA11X0) += mcp-sa11x0.o + obj-$(CONFIG_MCP_UCB1200) += ucb1x00-core.o +diff --git a/drivers/mfd/mfd-core.c b/drivers/mfd/mfd-core.c +new file mode 100644 +index 0000000..88874e1 +--- /dev/null ++++ b/drivers/mfd/mfd-core.c +@@ -0,0 +1,116 @@ ++/* ++ * drivers/mfd/mfd-core.c ++ * ++ * core MFD support ++ * Copyright (c) 2006 Ian Molton ++ * Copyright (c) 2007 Dmitry Baryshkov ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License version 2 as ++ * published by the Free Software Foundation. ++ * ++ */ ++ ++#include <linux/kernel.h> ++#include <linux/platform_device.h> ++#include <linux/mfd-core.h> ++ ++#define SIGNED_SHIFT(val, shift) ((shift) >= 0 ? \ ++ ((val) << (shift)) : \ ++ ((val) >> -(shift))) ++ ++int mfd_add_devices( ++ struct platform_device *parent, ++ const struct mfd_cell *cells, int n_devs, ++ struct resource *mem, ++ int relative_addr_shift, ++ int irq_base) ++{ ++ int i; ++ ++ for (i = 0; i < n_devs; i++) { ++ struct resource *res = NULL; ++ const struct mfd_cell *cell = cells + i; ++ struct platform_device *pdev; ++ int ret = -ENOMEM; ++ int r; ++ ++ pdev = platform_device_alloc(cell->name, -1); ++ if (!pdev) ++ goto fail_alloc; ++ ++ pdev->dev.uevent_suppress = 0; ++ pdev->dev.parent = &parent->dev; ++ ++ ret = platform_device_add_data(pdev, &cell, sizeof(struct mfd_cell *)); ++ if (ret) ++ goto fail_device; ++ ++ res = kzalloc(cell->num_resources * sizeof(struct resource), ++ GFP_KERNEL); ++ if (!res) ++ goto fail_device; ++ ++ for (r = 0; r < cell->num_resources; r++) { ++ res[r].name = cell->resources[r].name; ++ ++ /* Find out base to use */ ++ if (cell->resources[r].flags & IORESOURCE_MEM) { ++ res[r].parent = mem; ++ res[r].start = mem->start + ++ SIGNED_SHIFT(cell->resources[r].start, ++ relative_addr_shift); ++ res[r].end = mem->start + ++ SIGNED_SHIFT(cell->resources[r].end, ++ relative_addr_shift); ++ } else if ((cell->resources[r].flags & IORESOURCE_IRQ) && ++ (cell->resources[r].flags & IORESOURCE_IRQ_MFD_SUBDEVICE)) { ++ res[r].start = irq_base + ++ cell->resources[r].start; ++ res[r].end = irq_base + ++ cell->resources[r].end; ++ } else { ++ res[r].start = cell->resources[r].start; ++ res[r].end = cell->resources[r].end; ++ } ++ ++ res[r].flags = cell->resources[r].flags; ++ } ++ ++ ret = platform_device_add_resources(pdev, ++ res, ++ cell->num_resources); ++ kfree(res); ++ ++ if (ret) ++ goto fail_device; ++ ++ ret = platform_device_add(pdev); ++ ++ if (ret) { ++ platform_device_del(pdev); ++fail_device: ++ platform_device_put(pdev); ++fail_alloc: ++ mfd_remove_devices(parent); ++ return ret; ++ } ++ } ++ return 0; ++} ++EXPORT_SYMBOL(mfd_add_devices); ++ ++static int mfd_remove_devices_fn(struct device *dev, void *unused) ++{ ++ platform_device_unregister(container_of(dev, struct platform_device, dev)); ++ return 0; ++} ++ ++void mfd_remove_devices(struct platform_device *parent) ++{ ++ device_for_each_child(&parent->dev, NULL, mfd_remove_devices_fn); ++} ++EXPORT_SYMBOL(mfd_remove_devices); ++ ++MODULE_LICENSE("GPL"); ++MODULE_AUTHOR("Ian Molton, Dmitry Baryshkov"); +diff --git a/include/linux/ioport.h b/include/linux/ioport.h +index 6187a85..0348c71 100644 +--- a/include/linux/ioport.h ++++ b/include/linux/ioport.h +@@ -56,6 +56,7 @@ struct resource_list { + #define IORESOURCE_IRQ_HIGHLEVEL (1<<2) + #define IORESOURCE_IRQ_LOWLEVEL (1<<3) + #define IORESOURCE_IRQ_SHAREABLE (1<<4) ++#define IORESOURCE_IRQ_MFD_SUBDEVICE (1<<5) + + /* ISA PnP DMA specific bits (IORESOURCE_BITS) */ + #define IORESOURCE_DMA_TYPE_MASK (3<<0) +diff --git a/include/linux/mfd-core.h b/include/linux/mfd-core.h +new file mode 100644 +index 0000000..0e9de78 +--- /dev/null ++++ b/include/linux/mfd-core.h +@@ -0,0 +1,51 @@ ++#ifndef MFD_CORE_H ++#define MFD_CORE_H ++/* ++ * drivers/mfd/mfd-core.h ++ * ++ * core MFD support ++ * Copyright (c) 2006 Ian Molton ++ * Copyright (c) 2007 Dmitry Baryshkov ++ * ++ * This program is free software; you can redistribute it and/or modify ++ * it under the terms of the GNU General Public License version 2 as ++ * published by the Free Software Foundation. ++ * ++ */ ++ ++#include <linux/platform_device.h> ++ ++struct mfd_cell { ++ const char *name; ++ ++ int (*enable)(struct platform_device *dev); ++ int (*disable)(struct platform_device *dev); ++ int (*suspend)(struct platform_device *dev); ++ int (*resume)(struct platform_device *dev); ++ ++ void *driver_data; /* data passed to drivers */ ++ ++ /* ++ * This resources can be specified relatievly to the parent device. ++ * For accessing device you should use resources from device ++ */ ++ int num_resources; ++ const struct resource *resources; ++}; ++ ++static inline __maybe_unused struct mfd_cell * ++mfd_get_cell(struct platform_device *pdev) ++{ ++ return *((struct mfd_cell **)(pdev->dev.platform_data)); ++} ++ ++extern int mfd_add_devices( ++ struct platform_device *parent, ++ const struct mfd_cell *cells, int n_devs, ++ struct resource *mem, ++ int relative_addr_shift, ++ int irq_base); ++ ++extern void mfd_remove_devices(struct platform_device *parent); ++ ++#endif +-- +1.5.3.8 + |