linux-2.6: Add a driver to run an MMC or SD card over a GPIO based SPI interface.

SVN-Revision: 10637
master
Michael Büsch 17 years ago
parent 5c58e93209
commit 12b5a779b9
  1. 94
      package/kernel/modules/other.mk
  2. 47
      package/mmc_over_gpio/Makefile
  3. 2
      package/mmc_over_gpio/src/Makefile
  4. 53
      package/mmc_over_gpio/src/linux/spi/spi_gpio.h
  5. 339
      package/mmc_over_gpio/src/mmc_over_spigpio.c
  6. 242
      package/mmc_over_gpio/src/spi_gpio.c
  7. 48
      target/linux/brcm47xx/patches-2.6.23/700-ssb-gigabit-ethernet-driver.patch
  8. 7635
      target/linux/generic-2.6/patches-2.6.23/300-add-mmc-spi-driver.patch
  9. 22
      target/linux/generic-2.6/patches-2.6.23/930-ssb_fixes.patch

@ -23,6 +23,21 @@ endef
$(eval $(call KernelPackage,crc-itu-t))
define KernelPackage/crc7
SUBMENU:=$(OTHER_MENU)
TITLE:=CRC7 support
KCONFIG:=CONFIG_CRC7
FILES:=$(LINUX_DIR)/lib/crc7.$(LINUX_KMOD_SUFFIX)
AUTOLOAD:=$(call AutoLoad,20,crc7)
endef
define KernelPackage/crc7/description
Kernel module for CRC7 support
endef
$(eval $(call KernelPackage,crc7))
define KernelPackage/eeprom-93cx6
SUBMENU:=$(OTHER_MENU)
TITLE:=EEPROM 93CX6 support
@ -211,16 +226,20 @@ $(eval $(call KernelPackage,bluetooth))
define KernelPackage/mmc
SUBMENU:=$(OTHER_MENU)
TITLE:=MMC/SD Card Support
DEPENDS:=@TARGET_at91
DEPENDS:=@LINUX_2_6
KCONFIG:= \
CONFIG_MMC \
CONFIG_MMC_BLOCK \
CONFIG_MMC_AT91
CONFIG_MMC_DEBUG=n \
CONFIG_MMC_UNSAFE_RESUME=n \
CONFIG_MMC_BLOCK_BOUNCE=y \
CONFIG_MMC_SDHCI=n \
CONFIG_MMC_TIFM_SD=n \
CONFIG_SDIO_UART=n
FILES:= \
$(LINUX_DIR)/drivers/mmc/mmc_core.$(LINUX_KMOD_SUFFIX) \
$(LINUX_DIR)/drivers/mmc/mmc_block.$(LINUX_KMOD_SUFFIX) \
$(LINUX_DIR)/drivers/mmc/at91_mci.$(LINUX_KMOD_SUFFIX)
AUTOLOAD:=$(call AutoLoad,90,mmc_core mmc_block at91_mci)
$(LINUX_DIR)/drivers/mmc/core/mmc_core.$(LINUX_KMOD_SUFFIX) \
$(LINUX_DIR)/drivers/mmc/card/mmc_block.$(LINUX_KMOD_SUFFIX)
AUTOLOAD:=$(call AutoLoad,90,mmc_core mmc_block)
endef
define KernelPackage/mmc/description
@ -230,6 +249,22 @@ endef
$(eval $(call KernelPackage,mmc))
define KernelPackage/mmc-at91
SUBMENU:=$(OTHER_MENU)
TITLE:=MMC/SD Card Support on AT91
DEPENDS:=@TARGET_at91 +kmod-mmc
KCONFIG:=CONFIG_MMC_AT91
FILES:=$(LINUX_DIR)/drivers/mmc/at91_mci.$(LINUX_KMOD_SUFFIX)
AUTOLOAD:=$(call AutoLoad,90,at91_mci)
endef
define KernelPackage/mmc-at91/description
Kernel support for MMC/SD cards on the AT91 target
endef
$(eval $(call KernelPackage,mmc-at91))
# XXX: added a workaround for watchdog path changes
ifeq ($(KERNEL),2.4)
WATCHDOG_DIR=char
@ -460,3 +495,50 @@ define KernelPackage/input-evdev/description
endef
$(eval $(call KernelPackage,input-evdev))
define KernelPackage/mmc-spi
SUBMENU:=$(OTHER_MENU)
TITLE:=MMC/SD over SPI Support
DEPENDS:=@LINUX_2_6
KCONFIG:=CONFIG_MMC_SPI
FILES:=$(LINUX_DIR)/drivers/mmc/host/mmc_spi.$(LINUX_KMOD_SUFFIX)
AUTOLOAD:=$(call AutoLoad,90,mmc_spi)
endef
define KernelPackage/mmc-spi/description
Kernel support for MMC/SD over SPI
endef
$(eval $(call KernelPackage,mmc-spi))
define KernelPackage/spi
SUBMENU:=$(OTHER_MENU)
DEPENDS:=@LINUX_2_6 +kmod-crc-itu-t +kmod-crc7
TITLE:=Serial Peripheral Interface
KCONFIG:=CONFIG_SPI=y \
CONFIG_MTD_DATAFLASH=n \
CONFIG_MTD_M25P80=n \
CONFIG_SPI_AT25=n \
CONFIG_SPI_SPIDEV=n \
CONFIG_SPI_TLE62X0=n
endef
define KernelPackage/spi/description
This package contains the Serial Peripheral Interface driver
endef
$(eval $(call KernelPackage,spi))
define KernelPackage/spi-bitbang
SUBMENU:=$(OTHER_MENU)
DEPENDS:=@LINUX_2_6
TITLE:=Serial Peripheral Interface bitbanging
KCONFIG:=CONFIG_SPI_BITBANG=y
endef
define KernelPackage/spi-bitbang/description
This package contains the Serial Peripheral Interface bitbanging library
endef
$(eval $(call KernelPackage,spi-bitbang))

@ -0,0 +1,47 @@
#
# Copyright (C) 2008 OpenWrt.org
#
# This is free software, licensed under the GNU General Public License v2.
# See /LICENSE for more information.
#
# $Id: Makefile 10138 2008-01-06 19:28:26Z nbd $
#XXX This package will go away once the stuff is merged into the kernel.
include $(TOPDIR)/rules.mk
include $(INCLUDE_DIR)/kernel.mk
PKG_NAME:=mmc-over-gpio
PKG_RELEASE:=1
include $(INCLUDE_DIR)/package.mk
define KernelPackage/mmc-over-gpio
SUBMENU:=Other modules
DEPENDS:=@LINUX_2_6 +kmod-spi +kmod-spi-bitbang +kmod-mmc +kmod-mmc-spi
TITLE:=MMC/SD card over GPIO support
FILES:=$(PKG_BUILD_DIR)/spi_gpio.$(LINUX_KMOD_SUFFIX) \
$(PKG_BUILD_DIR)/mmc_over_spigpio.$(LINUX_KMOD_SUFFIX)
AUTOLOAD:=$(call AutoLoad,90,spi_gpio mmc_over_spigpio)
endef
define KernelPackage/mmc-over-gpio/description
Support for driving an MMC/SD card over GPIO pins via SPI.
endef
define Build/Prepare
mkdir -p $(PKG_BUILD_DIR)
$(CP) ./src/* $(PKG_BUILD_DIR)/
endef
define Build/Compile
$(MAKE) -C "$(LINUX_DIR)" \
CROSS_COMPILE="$(TARGET_CROSS)" \
ARCH="$(LINUX_KARCH)" \
SUBDIRS="$(PKG_BUILD_DIR)" \
EXTRA_CFLAGS="$(BUILDFLAGS)" \
modules
endef
$(eval $(call KernelPackage,mmc-over-gpio))

@ -0,0 +1,2 @@
obj-m += spi_gpio.o
obj-m += mmc_over_spigpio.o

@ -0,0 +1,53 @@
/*
* spi_gpio interface to platform code
*
* Copyright (c) 2008 Piotr Skamruk
*
* 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.
*/
#ifndef _LINUX_SPI_SPI_GPIO
#define _LINUX_SPI_SPI_GPIO
#include <linux/types.h>
#include <linux/spi/spi.h>
/** struct spi_gpio_platform_data - Data definitions for a SPI-GPIO device.
* This structure holds information about a GPIO-based SPI device.
*
* @pin_clk: The GPIO pin number of the CLOCK pin.
*
* @pin_miso: The GPIO pin number of the MISO pin.
*
* @pin_mosi: The GPIO pin number of the MOSI pin.
*
* @pin_cs: The GPIO pin number of the CHIPSELECT pin.
*
* @cs_activelow: If true, the chip is selected when the CS line is low.
*
* @no_spi_delay: If true, no delay is done in the lowlevel bitbanging.
* Note that doing no delay is not standards compliant,
* but it might be needed to speed up transfers on some
* slow embedded machines.
*
* @boardinfo_setup: This callback is called after the
* SPI master device was registered, but before the
* device is registered.
* @boardinfo_setup_data: Data argument passed to boardinfo_setup().
*/
struct spi_gpio_platform_data {
unsigned int pin_clk;
unsigned int pin_miso;
unsigned int pin_mosi;
unsigned int pin_cs;
bool cs_activelow;
bool no_spi_delay;
int (*boardinfo_setup)(struct spi_board_info *bi,
struct spi_master *master,
void *data);
void *boardinfo_setup_data;
};
#endif /* _LINUX_SPI_SPI_GPIO */

@ -0,0 +1,339 @@
/*
* Driver for driving an MMC card over a bitbanging GPIO SPI bus.
*
* Copyright 2008 Michael Buesch <mb@bu3sch.de>
*
* Licensed under the GNU/GPL. See COPYING for details.
*/
#include <linux/platform_device.h>
#include <linux/list.h>
#include <linux/mutex.h>
#include "linux/spi/spi_gpio.h" //XXX
/* This is the maximum speed in Hz */
#define GPIOMMC_MAXSPEED 5000000 /* Hz */
#define DRIVER_NAME "spi-gpio-mmc"
#define PFX DRIVER_NAME ": "
#define GPIOMMC_MAX_NAMELEN 15
#define GPIOMMC_MAX_NAMELEN_STR __stringify(GPIOMMC_MAX_NAMELEN)
struct gpiommc_pins {
unsigned int gpio_di; /* Card DI pin */
unsigned int gpio_do; /* Card DO pin */
unsigned int gpio_clk; /* Card CLK pin */
unsigned int gpio_cs; /* Card CS pin */
};
struct gpiommc_device {
char name[GPIOMMC_MAX_NAMELEN + 1];
struct platform_device *pdev;
struct platform_device *spi_pdev;
struct gpiommc_pins pins;
u8 mode; /* SPI_MODE_X */
struct spi_board_info boardinfo;
struct list_head list;
};
static LIST_HEAD(gpiommc_devices_list);
static DEFINE_MUTEX(gpiommc_mutex);
MODULE_DESCRIPTION("SPI-GPIO based MMC driver");
MODULE_AUTHOR("Michael Buesch");
MODULE_LICENSE("GPL");
static int gpiommc_boardinfo_setup(struct spi_board_info *bi,
struct spi_master *master,
void *data)
{
struct gpiommc_device *d = data;
/* Bind the SPI master to the MMC-SPI host driver. */
strlcpy(bi->modalias, "mmc_spi", sizeof(bi->modalias));
bi->max_speed_hz = GPIOMMC_MAXSPEED;
bi->bus_num = master->bus_num;
bi->mode = d->mode;
return 0;
}
static int gpiommc_probe(struct platform_device *pdev)
{
static int instance;
struct gpiommc_device *d = platform_get_drvdata(pdev);
struct spi_gpio_platform_data pdata;
int err = -ENOMEM;
d->spi_pdev = platform_device_alloc("spi-gpio", instance++);
if (!d->spi_pdev)
goto out;
memset(&pdata, 0, sizeof(pdata));
pdata.pin_clk = d->pins.gpio_clk;
pdata.pin_miso = d->pins.gpio_do;
pdata.pin_mosi = d->pins.gpio_di;
pdata.pin_cs = d->pins.gpio_cs;
pdata.cs_activelow = 1;
pdata.no_spi_delay = 1;
pdata.boardinfo_setup = gpiommc_boardinfo_setup;
pdata.boardinfo_setup_data = d;
err = platform_device_add_data(d->spi_pdev, &pdata, sizeof(pdata));
if (err)
goto err_free_pdev;
err = platform_device_register(d->spi_pdev);
if (err)
goto err_free_pdata;
printk(KERN_INFO PFX "MMC-Card \"%s\" "
"attached to GPIO pins %u,%u,%u,%u\n",
d->name, d->pins.gpio_di, d->pins.gpio_do,
d->pins.gpio_clk, d->pins.gpio_cs);
out:
return err;
err_free_pdata:
kfree(d->spi_pdev->dev.platform_data);
d->spi_pdev->dev.platform_data = NULL;
err_free_pdev:
platform_device_put(d->spi_pdev);
return err;
}
static int gpiommc_remove(struct platform_device *pdev)
{
struct gpiommc_device *d = platform_get_drvdata(pdev);
platform_device_unregister(d->spi_pdev);
printk(KERN_INFO PFX "MMC-Card \"%s\" removed\n", d->name);
return 0;
}
static void gpiommc_free(struct gpiommc_device *d)
{
kfree(d);
}
static struct gpiommc_device * gpiommc_alloc(struct platform_device *pdev,
const char *name,
const struct gpiommc_pins *pins,
u8 mode)
{
struct gpiommc_device *d;
d = kmalloc(sizeof(*d), GFP_KERNEL);
if (!d)
return NULL;
strcpy(d->name, name);
memcpy(&d->pins, pins, sizeof(d->pins));
d->mode = mode;
INIT_LIST_HEAD(&d->list);
return d;
}
/* List must be locked. */
static struct gpiommc_device * gpiommc_find_device(const char *name)
{
struct gpiommc_device *d;
list_for_each_entry(d, &gpiommc_devices_list, list) {
if (strcmp(d->name, name) == 0)
return d;
}
return NULL;
}
static void gpiommc_do_destroy_device(struct gpiommc_device *d)
{
list_del(&d->list);
platform_device_unregister(d->pdev);
gpiommc_free(d);
}
static int gpiommc_destroy_device(const char *name)
{
struct gpiommc_device *d;
int err = -ENODEV;
mutex_lock(&gpiommc_mutex);
d = gpiommc_find_device(name);
if (!d)
goto out_unlock;
gpiommc_do_destroy_device(d);
err = 0;
out_unlock:
mutex_unlock(&gpiommc_mutex);
return err;
}
static int gpiommc_create_device(const char *name,
const struct gpiommc_pins *pins,
u8 mode)
{
static int instance;
struct platform_device *pdev;
struct gpiommc_device *d;
int err;
mutex_lock(&gpiommc_mutex);
err = -EEXIST;
if (gpiommc_find_device(name))
goto out_unlock;
err = -ENOMEM;
pdev = platform_device_alloc(DRIVER_NAME, instance++);
if (!pdev)
goto out_unlock;
d = gpiommc_alloc(pdev, name, pins, mode);
if (!d)
goto err_free_pdev;
platform_set_drvdata(pdev, d);
d->pdev = pdev;
err = platform_device_register(pdev);
if (err)
goto err_free_mdev;
list_add(&d->list, &gpiommc_devices_list);
err = 0;
out_unlock:
mutex_unlock(&gpiommc_mutex);
return err;
err_free_mdev:
gpiommc_free(d);
err_free_pdev:
platform_device_put(pdev);
goto out_unlock;
}
static ssize_t gpiommc_add_show(struct device_driver *drv,
char *buf)
{
return snprintf(buf, PAGE_SIZE, "NAME DI_pin,DO_pin,CLK_pin,CS_pin [MODE]\n");
}
static ssize_t gpiommc_add_store(struct device_driver *drv,
const char *buf, size_t count)
{
int res, err;
char name[GPIOMMC_MAX_NAMELEN + 1];
struct gpiommc_pins pins;
unsigned int mode;
res = sscanf(buf, "%" GPIOMMC_MAX_NAMELEN_STR "s %u,%u,%u,%u %u",
name, &pins.gpio_di, &pins.gpio_do,
&pins.gpio_clk, &pins.gpio_cs, &mode);
if (res == 5)
mode = 0;
else if (res != 6)
return -EINVAL;
switch (mode) {
case 0:
mode = SPI_MODE_0;
break;
case 1:
mode = SPI_MODE_1;
break;
case 2:
mode = SPI_MODE_2;
break;
case 3:
mode = SPI_MODE_3;
break;
default:
return -EINVAL;
}
err = gpiommc_create_device(name, &pins, mode);
return err ? err : count;
}
static ssize_t gpiommc_remove_show(struct device_driver *drv,
char *buf)
{
return snprintf(buf, PAGE_SIZE, "write device-name to remove the device\n");
}
static ssize_t gpiommc_remove_store(struct device_driver *drv,
const char *buf, size_t count)
{
int err;
err = gpiommc_destroy_device(buf);
return err ? err : count;
}
static DRIVER_ATTR(add, 0600,
gpiommc_add_show, gpiommc_add_store);
static DRIVER_ATTR(remove, 0600,
gpiommc_remove_show, gpiommc_remove_store);
static struct platform_driver gpiommc_plat_driver = {
.probe = gpiommc_probe,
.remove = gpiommc_remove,
.driver = {
.name = DRIVER_NAME,
.owner = THIS_MODULE,
},
};
static int __init gpiommc_modinit(void)
{
int err;
err = platform_driver_register(&gpiommc_plat_driver);
if (err)
return err;
err = driver_create_file(&gpiommc_plat_driver.driver,
&driver_attr_add);
if (err)
goto err_drv_unreg;
err = driver_create_file(&gpiommc_plat_driver.driver,
&driver_attr_remove);
if (err)
goto err_remove_add;
return 0;
err_remove_add:
driver_remove_file(&gpiommc_plat_driver.driver,
&driver_attr_add);
err_drv_unreg:
platform_driver_unregister(&gpiommc_plat_driver);
return err;
}
module_init(gpiommc_modinit);
static void __exit gpiommc_modexit(void)
{
struct gpiommc_device *d, *tmp;
driver_remove_file(&gpiommc_plat_driver.driver,
&driver_attr_remove);
driver_remove_file(&gpiommc_plat_driver.driver,
&driver_attr_add);
mutex_lock(&gpiommc_mutex);
list_for_each_entry_safe(d, tmp, &gpiommc_devices_list, list)
gpiommc_do_destroy_device(d);
mutex_unlock(&gpiommc_mutex);
platform_driver_unregister(&gpiommc_plat_driver);
}
module_exit(gpiommc_modexit);

@ -0,0 +1,242 @@
/*
* Bitbanging SPI bus driver using GPIO API
*
* Copyright (c) 2008 Piotr Skamruk
* Copyright (c) 2008 Michael Buesch
*
* based on spi_s3c2410_gpio.c
* Copyright (c) 2006 Ben Dooks
* Copyright (c) 2006 Simtec Electronics
* and on i2c-gpio.c
* Copyright (C) 2007 Atmel Corporation
*
* 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/init.h>
#include <linux/delay.h>
#include <linux/spinlock.h>
#include <linux/workqueue.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/spi/spi.h>
#include <linux/spi/spi_bitbang.h>
#include "linux/spi/spi_gpio.h" //XXX
#include <asm/gpio.h>
struct spi_gpio {
struct spi_bitbang bitbang;
struct spi_gpio_platform_data *info;
struct platform_device *pdev;
struct spi_board_info bi;
};
static inline struct spi_gpio *spidev_to_sg(struct spi_device *dev)
{
return dev->controller_data;
}
static inline void setsck(struct spi_device *dev, int val)
{
struct spi_gpio *sp = spidev_to_sg(dev);
gpio_set_value(sp->info->pin_clk, val ? 1 : 0);
}
static inline void setmosi(struct spi_device *dev, int val )
{
struct spi_gpio *sp = spidev_to_sg(dev);
gpio_set_value(sp->info->pin_mosi, val ? 1 : 0);
}
static inline u32 getmiso(struct spi_device *dev)
{
struct spi_gpio *sp = spidev_to_sg(dev);
return gpio_get_value(sp->info->pin_miso) ? 1 : 0;
}
static inline void do_spidelay(struct spi_device *dev, unsigned nsecs)
{
struct spi_gpio *sp = spidev_to_sg(dev);
if (!sp->info->no_spi_delay)
ndelay(nsecs);
}
#define spidelay(nsecs) do { \
/* Steal the spi_device pointer from our caller. \
* The bitbang-API should probably get fixed here... */ \
do_spidelay(spi, nsecs); \
} while (0)
#define EXPAND_BITBANG_TXRX
#include <linux/spi/spi_bitbang.h>
static u32 spi_gpio_txrx_mode0(struct spi_device *spi,
unsigned nsecs, u32 word, u8 bits)
{
return bitbang_txrx_be_cpha0(spi, nsecs, 0, word, bits);
}
static u32 spi_gpio_txrx_mode1(struct spi_device *spi,
unsigned nsecs, u32 word, u8 bits)
{
return bitbang_txrx_be_cpha1(spi, nsecs, 0, word, bits);
}
static u32 spi_gpio_txrx_mode2(struct spi_device *spi,
unsigned nsecs, u32 word, u8 bits)
{
return bitbang_txrx_be_cpha0(spi, nsecs, 1, word, bits);
}
static u32 spi_gpio_txrx_mode3(struct spi_device *spi,
unsigned nsecs, u32 word, u8 bits)
{
return bitbang_txrx_be_cpha1(spi, nsecs, 1, word, bits);
}
static void spi_gpio_chipselect(struct spi_device *dev, int on)
{
struct spi_gpio *sp = spidev_to_sg(dev);
if (sp->info->cs_activelow)
on = !on;
gpio_set_value(sp->info->pin_cs, on ? 1 : 0);
}
static int spi_gpio_probe(struct platform_device *pdev)
{
struct spi_master *master;
struct spi_gpio_platform_data *pdata;
struct spi_gpio *sp;
struct spi_device *spidev;
int err;
pdata = pdev->dev.platform_data;
if (!pdata)
return -ENXIO;
err = -ENOMEM;
master = spi_alloc_master(&pdev->dev, sizeof(struct spi_gpio));
if (!master)
goto err_alloc_master;
sp = spi_master_get_devdata(master);
platform_set_drvdata(pdev, sp);
sp->info = pdata;
err = gpio_request(pdata->pin_clk, "spi_clock");
if (err)
goto err_request_clk;
err = gpio_request(pdata->pin_mosi, "spi_mosi");
if (err)
goto err_request_mosi;
err = gpio_request(pdata->pin_miso, "spi_miso");
if (err)
goto err_request_miso;
err = gpio_request(pdata->pin_cs, "spi_cs");
if (err)
goto err_request_cs;
sp->bitbang.master = spi_master_get(master);
sp->bitbang.master->bus_num = -1;
sp->bitbang.master->num_chipselect = 1;
sp->bitbang.chipselect = spi_gpio_chipselect;
sp->bitbang.txrx_word[SPI_MODE_0] = spi_gpio_txrx_mode0;
sp->bitbang.txrx_word[SPI_MODE_1] = spi_gpio_txrx_mode1;
sp->bitbang.txrx_word[SPI_MODE_2] = spi_gpio_txrx_mode2;
sp->bitbang.txrx_word[SPI_MODE_3] = spi_gpio_txrx_mode3;
gpio_direction_output(pdata->pin_clk, 0);
gpio_direction_output(pdata->pin_mosi, 0);
gpio_direction_output(pdata->pin_cs,
pdata->cs_activelow ? 1 : 0);
gpio_direction_input(pdata->pin_miso);
err = spi_bitbang_start(&sp->bitbang);
if (err)
goto err_no_bitbang;
err = pdata->boardinfo_setup(&sp->bi, master,
pdata->boardinfo_setup_data);
if (err)
goto err_bi_setup;
sp->bi.controller_data = sp;
spidev = spi_new_device(master, &sp->bi);
if (!spidev)
goto err_new_dev;
return 0;
err_new_dev:
err_bi_setup:
spi_bitbang_stop(&sp->bitbang);
err_no_bitbang:
spi_master_put(sp->bitbang.master);
gpio_free(pdata->pin_cs);
err_request_cs:
gpio_free(pdata->pin_miso);
err_request_miso:
gpio_free(pdata->pin_mosi);
err_request_mosi:
gpio_free(pdata->pin_clk);
err_request_clk:
kfree(master);
err_alloc_master:
return err;
}
static int __devexit spi_gpio_remove(struct platform_device *pdev)
{
struct spi_gpio *sp;
struct spi_gpio_platform_data *pdata;
pdata = pdev->dev.platform_data;
sp = platform_get_drvdata(pdev);
gpio_free(pdata->pin_clk);
gpio_free(pdata->pin_mosi);
gpio_free(pdata->pin_miso);
gpio_free(pdata->pin_cs);
spi_bitbang_stop(&sp->bitbang);
spi_master_put(sp->bitbang.master);
return 0;
}
static struct platform_driver spi_gpio_driver = {
.driver = {
.name = "spi-gpio",
.owner = THIS_MODULE,
},
.probe = spi_gpio_probe,
.remove = __devexit_p(spi_gpio_remove),
};
static int __init spi_gpio_init(void)
{
int err;
err = platform_driver_register(&spi_gpio_driver);
if (err)
printk(KERN_ERR "spi-gpio: register failed: %d\n", err);
return err;
}
module_init(spi_gpio_init);
static void __exit spi_gpio_exit(void)
{
platform_driver_unregister(&spi_gpio_driver);
}
module_exit(spi_gpio_exit);
MODULE_AUTHOR("Piot Skamruk <piotr.skamruk at gmail.com>");
MODULE_AUTHOR("Michael Buesch");
MODULE_DESCRIPTION("Platform independent GPIO bitbangling SPI driver");
MODULE_LICENSE("GPL v2");

@ -1,7 +1,7 @@
Index: linux-2.6.23.16/drivers/ssb/Kconfig
===================================================================
--- linux-2.6.23.16.orig/drivers/ssb/Kconfig 2008-02-28 12:52:40.000000000 +0100
+++ linux-2.6.23.16/drivers/ssb/Kconfig 2008-02-29 01:01:00.000000000 +0100
--- linux-2.6.23.16.orig/drivers/ssb/Kconfig 2008-03-19 11:16:18.000000000 +0100
+++ linux-2.6.23.16/drivers/ssb/Kconfig 2008-03-19 11:16:18.000000000 +0100
@@ -120,4 +120,13 @@ config SSB_DRIVER_EXTIF
If unsure, say N
@ -18,8 +18,8 @@ Index: linux-2.6.23.16/drivers/ssb/Kconfig
endmenu
Index: linux-2.6.23.16/drivers/ssb/Makefile
===================================================================
--- linux-2.6.23.16.orig/drivers/ssb/Makefile 2008-02-28 12:52:40.000000000 +0100
+++ linux-2.6.23.16/drivers/ssb/Makefile 2008-02-28 12:52:40.000000000 +0100
--- linux-2.6.23.16.orig/drivers/ssb/Makefile 2008-03-19 11:16:18.000000000 +0100
+++ linux-2.6.23.16/drivers/ssb/Makefile 2008-03-19 11:16:18.000000000 +0100
@@ -11,6 +11,7 @@ ssb-y += driver_chipcommon.o
ssb-$(CONFIG_SSB_DRIVER_MIPS) += driver_mipscore.o
ssb-$(CONFIG_SSB_DRIVER_EXTIF) += driver_extif.o
@ -31,7 +31,7 @@ Index: linux-2.6.23.16/drivers/ssb/Makefile
Index: linux-2.6.23.16/drivers/ssb/driver_gige.c
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ linux-2.6.23.16/drivers/ssb/driver_gige.c 2008-02-29 01:05:04.000000000 +0100
+++ linux-2.6.23.16/drivers/ssb/driver_gige.c 2008-03-19 11:16:18.000000000 +0100
@@ -0,0 +1,294 @@
+/*
+ * Sonics Silicon Backplane
@ -330,7 +330,7 @@ Index: linux-2.6.23.16/drivers/ssb/driver_gige.c
Index: linux-2.6.23.16/include/linux/ssb/ssb_driver_gige.h
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ linux-2.6.23.16/include/linux/ssb/ssb_driver_gige.h 2008-02-29 01:10:50.000000000 +0100
+++ linux-2.6.23.16/include/linux/ssb/ssb_driver_gige.h 2008-03-19 11:16:18.000000000 +0100
@@ -0,0 +1,174 @@
+#ifndef LINUX_SSB_DRIVER_GIGE_H_
+#define LINUX_SSB_DRIVER_GIGE_H_
@ -508,8 +508,8 @@ Index: linux-2.6.23.16/include/linux/ssb/ssb_driver_gige.h
+#endif /* LINUX_SSB_DRIVER_GIGE_H_ */
Index: linux-2.6.23.16/drivers/ssb/driver_pcicore.c
===================================================================
--- linux-2.6.23.16.orig/drivers/ssb/driver_pcicore.c 2008-02-28 12:52:40.000000000 +0100
+++ linux-2.6.23.16/drivers/ssb/driver_pcicore.c 2008-02-28 12:52:40.000000000 +0100
--- linux-2.6.23.16.orig/drivers/ssb/driver_pcicore.c 2008-03-19 11:16:18.000000000 +0100
+++ linux-2.6.23.16/drivers/ssb/driver_pcicore.c 2008-03-19 11:16:18.000000000 +0100
@@ -60,74 +60,6 @@ static DEFINE_SPINLOCK(cfgspace_lock);
/* Core to access the external PCI config space. Can only have one. */
static struct ssb_pcicore *extpci_core;
@ -680,8 +680,8 @@ Index: linux-2.6.23.16/drivers/ssb/driver_pcicore.c
u32 val;
Index: linux-2.6.23.16/drivers/ssb/embedded.c
===================================================================
--- linux-2.6.23.16.orig/drivers/ssb/embedded.c 2008-02-28 12:52:40.000000000 +0100
+++ linux-2.6.23.16/drivers/ssb/embedded.c 2008-02-28 12:52:40.000000000 +0100
--- linux-2.6.23.16.orig/drivers/ssb/embedded.c 2008-03-19 11:16:18.000000000 +0100
+++ linux-2.6.23.16/drivers/ssb/embedded.c 2008-03-19 11:16:18.000000000 +0100
@@ -10,6 +10,9 @@
#include <linux/ssb/ssb.h>
@ -785,8 +785,8 @@ Index: linux-2.6.23.16/drivers/ssb/embedded.c
+}
Index: linux-2.6.23.16/include/linux/ssb/ssb.h
===================================================================
--- linux-2.6.23.16.orig/include/linux/ssb/ssb.h 2008-02-28 12:52:40.000000000 +0100
+++ linux-2.6.23.16/include/linux/ssb/ssb.h 2008-02-28 12:52:40.000000000 +0100
--- linux-2.6.23.16.orig/include/linux/ssb/ssb.h 2008-03-19 11:16:18.000000000 +0100
+++ linux-2.6.23.16/include/linux/ssb/ssb.h 2008-03-19 11:16:18.000000000 +0100
@@ -422,5 +422,12 @@ extern int ssb_bus_powerup(struct ssb_bu
extern u32 ssb_admatch_base(u32 adm);
extern u32 ssb_admatch_size(u32 adm);
@ -802,8 +802,8 @@ Index: linux-2.6.23.16/include/linux/ssb/ssb.h
#endif /* LINUX_SSB_H_ */
Index: linux-2.6.23.16/include/linux/ssb/ssb_driver_pci.h
===================================================================
--- linux-2.6.23.16.orig/include/linux/ssb/ssb_driver_pci.h 2008-02-28 12:52:40.000000000 +0100
+++ linux-2.6.23.16/include/linux/ssb/ssb_driver_pci.h 2008-02-28 12:52:40.000000000 +0100
--- linux-2.6.23.16.orig/include/linux/ssb/ssb_driver_pci.h 2008-03-19 11:16:18.000000000 +0100
+++ linux-2.6.23.16/include/linux/ssb/ssb_driver_pci.h 2008-03-19 11:16:18.000000000 +0100
@@ -1,6 +1,11 @@
#ifndef LINUX_SSB_PCICORE_H_
#define LINUX_SSB_PCICORE_H_
@ -845,8 +845,8 @@ Index: linux-2.6.23.16/include/linux/ssb/ssb_driver_pci.h
#endif /* LINUX_SSB_PCICORE_H_ */
Index: linux-2.6.23.16/drivers/ssb/main.c
===================================================================
--- linux-2.6.23.16.orig/drivers/ssb/main.c 2008-02-28 12:52:40.000000000 +0100
+++ linux-2.6.23.16/drivers/ssb/main.c 2008-02-28 12:52:40.000000000 +0100
--- linux-2.6.23.16.orig/drivers/ssb/main.c 2008-03-19 11:16:18.000000000 +0100
+++ linux-2.6.23.16/drivers/ssb/main.c 2008-03-19 11:16:18.000000000 +0100
@@ -14,6 +14,7 @@
#include <linux/io.h>
#include <linux/ssb/ssb.h>
@ -907,8 +907,8 @@ Index: linux-2.6.23.16/drivers/ssb/main.c
}
Index: linux-2.6.23.16/drivers/ssb/ssb_private.h
===================================================================
--- linux-2.6.23.16.orig/drivers/ssb/ssb_private.h 2008-02-28 12:52:37.000000000 +0100
+++ linux-2.6.23.16/drivers/ssb/ssb_private.h 2008-02-28 12:52:40.000000000 +0100
--- linux-2.6.23.16.orig/drivers/ssb/ssb_private.h 2008-03-19 11:16:15.000000000 +0100
+++ linux-2.6.23.16/drivers/ssb/ssb_private.h 2008-03-19 11:16:18.000000000 +0100
@@ -118,6 +118,8 @@ extern u32 ssb_calc_clock_rate(u32 pllty
extern int ssb_devices_freeze(struct ssb_bus *bus);
extern int ssb_devices_thaw(struct ssb_bus *bus);
@ -920,8 +920,8 @@ Index: linux-2.6.23.16/drivers/ssb/ssb_private.h
#ifdef CONFIG_SSB_PCIHOST
Index: linux-2.6.23.16/drivers/net/tg3.c
===================================================================
--- linux-2.6.23.16.orig/drivers/net/tg3.c 2008-02-28 12:52:37.000000000 +0100
+++ linux-2.6.23.16/drivers/net/tg3.c 2008-02-29 00:59:00.000000000 +0100
--- linux-2.6.23.16.orig/drivers/net/tg3.c 2008-03-19 11:16:15.000000000 +0100
+++ linux-2.6.23.16/drivers/net/tg3.c 2008-03-19 11:16:18.000000000 +0100
@@ -38,6 +38,7 @@
#include <linux/workqueue.h>
#include <linux/prefetch.h>
@ -1207,8 +1207,8 @@ Index: linux-2.6.23.16/drivers/net/tg3.c
* swapping. DMA data byte swapping is controlled in the GRC_MODE
Index: linux-2.6.23.16/drivers/net/tg3.h
===================================================================
--- linux-2.6.23.16.orig/drivers/net/tg3.h 2008-02-28 12:52:37.000000000 +0100
+++ linux-2.6.23.16/drivers/net/tg3.h 2008-02-28 12:52:40.000000000 +0100
--- linux-2.6.23.16.orig/drivers/net/tg3.h 2008-03-19 11:16:15.000000000 +0100
+++ linux-2.6.23.16/drivers/net/tg3.h 2008-03-19 11:16:18.000000000 +0100
@@ -2279,6 +2279,10 @@ struct tg3 {
#define TG3_FLG2_PHY_JITTER_BUG 0x20000000
#define TG3_FLG2_NO_FWARE_REPORTED 0x40000000
@ -1240,8 +1240,8 @@ Index: linux-2.6.23.16/drivers/net/tg3.h
dma_addr_t stats_mapping;
Index: linux-2.6.23.16/drivers/ssb/driver_mipscore.c
===================================================================
--- linux-2.6.23.16.orig/drivers/ssb/driver_mipscore.c 2008-02-28 12:52:40.000000000 +0100
+++ linux-2.6.23.16/drivers/ssb/driver_mipscore.c 2008-02-28 12:52:40.000000000 +0100
--- linux-2.6.23.16.orig/drivers/ssb/driver_mipscore.c 2008-03-19 11:16:18.000000000 +0100
+++ linux-2.6.23.16/drivers/ssb/driver_mipscore.c 2008-03-19 11:16:18.000000000 +0100
@@ -211,6 +211,7 @@ void ssb_mipscore_init(struct ssb_mipsco
/* fallthrough */
case SSB_DEV_PCI:

@ -2,8 +2,8 @@ This patch ports ssb to the 2.6.23 kernel.
Index: linux-2.6.23.16/drivers/ssb/driver_mipscore.c
===================================================================
--- linux-2.6.23.16.orig/drivers/ssb/driver_mipscore.c 2008-02-19 13:45:04.000000000 +0100
+++ linux-2.6.23.16/drivers/ssb/driver_mipscore.c 2008-02-19 13:45:07.000000000 +0100
--- linux-2.6.23.16.orig/drivers/ssb/driver_mipscore.c 2008-03-21 17:33:28.000000000 +0100
+++ linux-2.6.23.16/drivers/ssb/driver_mipscore.c 2008-03-21 17:33:34.000000000 +0100
@@ -222,3 +222,5 @@ void ssb_mipscore_init(struct ssb_mipsco
ssb_mips_serial_init(mcore);
ssb_mips_flash_detect(mcore);
@ -12,9 +12,9 @@ Index: linux-2.6.23.16/drivers/ssb/driver_mipscore.c
+EXPORT_SYMBOL(ssb_mips_irq);
Index: linux-2.6.23.16/include/linux/mod_devicetable.h
===================================================================
--- linux-2.6.23.16.orig/include/linux/mod_devicetable.h 2008-02-19 13:45:04.000000000 +0100
+++ linux-2.6.23.16/include/linux/mod_devicetable.h 2008-02-19 13:45:07.000000000 +0100
@@ -340,4 +340,19 @@ struct parisc_device_id {
--- linux-2.6.23.16.orig/include/linux/mod_devicetable.h 2008-03-21 17:33:28.000000000 +0100
+++ linux-2.6.23.16/include/linux/mod_devicetable.h 2008-03-21 17:33:34.000000000 +0100
@@ -352,4 +352,19 @@ struct parisc_device_id {
#define PA_HVERSION_ANY_ID 0xffff
#define PA_SVERSION_ANY_ID 0xffffffff
@ -36,8 +36,8 @@ Index: linux-2.6.23.16/include/linux/mod_devicetable.h
#endif /* LINUX_MOD_DEVICETABLE_H */
Index: linux-2.6.23.16/drivers/ssb/main.c
===================================================================
--- linux-2.6.23.16.orig/drivers/ssb/main.c 2008-02-19 13:45:04.000000000 +0100
+++ linux-2.6.23.16/drivers/ssb/main.c 2008-02-19 13:45:07.000000000 +0100
--- linux-2.6.23.16.orig/drivers/ssb/main.c 2008-03-21 17:33:28.000000000 +0100
+++ linux-2.6.23.16/drivers/ssb/main.c 2008-03-21 17:33:34.000000000 +0100
@@ -321,14 +321,16 @@ static int ssb_bus_match(struct device *
return 0;
}
@ -59,8 +59,8 @@ Index: linux-2.6.23.16/drivers/ssb/main.c
ssb_dev->id.revision);
Index: linux-2.6.23.16/drivers/ssb/scan.c
===================================================================
--- linux-2.6.23.16.orig/drivers/ssb/scan.c 2008-02-19 13:45:04.000000000 +0100
+++ linux-2.6.23.16/drivers/ssb/scan.c 2008-02-19 13:45:07.000000000 +0100
--- linux-2.6.23.16.orig/drivers/ssb/scan.c 2008-03-21 17:33:28.000000000 +0100
+++ linux-2.6.23.16/drivers/ssb/scan.c 2008-03-21 17:33:34.000000000 +0100
@@ -391,12 +391,14 @@ int ssb_bus_scan(struct ssb_bus *bus,
if (bus->bustype == SSB_BUSTYPE_PCI) {
/* Ignore PCI cores on PCI-E cards.
@ -82,8 +82,8 @@ Index: linux-2.6.23.16/drivers/ssb/scan.c
if (bus->pcicore.dev) {
Index: linux-2.6.23.16/drivers/ssb/driver_pcicore.c
===================================================================
--- linux-2.6.23.16.orig/drivers/ssb/driver_pcicore.c 2008-02-19 13:45:04.000000000 +0100
+++ linux-2.6.23.16/drivers/ssb/driver_pcicore.c 2008-02-19 13:45:07.000000000 +0100
--- linux-2.6.23.16.orig/drivers/ssb/driver_pcicore.c 2008-03-21 17:33:28.000000000 +0100
+++ linux-2.6.23.16/drivers/ssb/driver_pcicore.c 2008-03-21 17:33:34.000000000 +0100
@@ -362,7 +362,7 @@ static int pcicore_is_in_hostmode(struct
chipid_top != 0x5300)
return 0;

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