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Diffstat (limited to 'target/linux/s3c24xx/patches-2.6.26/0100-revert-openwrt-patches-921-922-923.patch')
-rwxr-xr-xtarget/linux/s3c24xx/patches-2.6.26/0100-revert-openwrt-patches-921-922-923.patch1247
1 files changed, 0 insertions, 1247 deletions
diff --git a/target/linux/s3c24xx/patches-2.6.26/0100-revert-openwrt-patches-921-922-923.patch b/target/linux/s3c24xx/patches-2.6.26/0100-revert-openwrt-patches-921-922-923.patch
deleted file mode 100755
index c82f52442c..0000000000
--- a/target/linux/s3c24xx/patches-2.6.26/0100-revert-openwrt-patches-921-922-923.patch
+++ /dev/null
@@ -1,1247 +0,0 @@
-Index: linux-2.6.26/Documentation/gpiommc.txt
-===================================================================
---- linux-2.6.26.orig/Documentation/gpiommc.txt 2008-12-12 21:55:07.000000000 +0100
-+++ /dev/null 1970-01-01 00:00:00.000000000 +0000
-@@ -1,97 +0,0 @@
--GPIOMMC - Driver for an MMC/SD card on a bitbanging GPIO SPI bus
--================================================================
--
--The gpiommc module hooks up the mmc_spi and spi_gpio modules for running an
--MMC or SD card on GPIO pins.
--
--Two interfaces for registering a new MMC/SD card device are provided:
--A static platform-device based mechanism and a dynamic configfs based interface.
--
--
--Registering devices via platform-device
--=======================================
--
--The platform-device interface is used for registering MMC/SD devices that are
--part of the hardware platform. This is most useful only for embedded machines
--with MMC/SD devices statically connected to the platform GPIO bus.
--
--The data structures are declared in <linux/mmc/gpiommc.h>.
--
--To register a new device, define an instance of struct gpiommc_platform_data.
--This structure holds any information about how the device is hooked up to the
--GPIO pins and what hardware modes the device supports. See the docbook-style
--documentation in the header file for more information on the struct fields.
--
--Then allocate a new instance of a platform device by doing:
--
-- pdev = platform_device_alloc(GPIOMMC_PLATDEV_NAME, gpiommc_next_id());
--
--This will allocate the platform device data structures and hook it up to the
--gpiommc driver.
--Then add the gpiommc_platform_data to the platform device.
--
-- err = platform_device_add_data(pdev, pdata, sizeof(struct gpiommc_platform_data));
--
--You may free the local instance of struct gpiommc_platform_data now. (So the
--struct may be allocated on the stack, too).
--Now simply register the platform device.
--
-- err = platform_device_add(pdev);
--
--Done. The gpiommc probe routine will be invoked now and you should see a kernel
--log message for the added device.
--
--
--Registering devices via configfs
--================================
--
--MMC/SD cards connected via GPIO often are a pretty dynamic thing, as for example
--selfmade hacks for soldering an MMC/SD card to standard GPIO pins on embedded
--hardware are a common situation.
--So we provide a dynamic interface to conveniently handle adding and removing
--devices from userspace, without the need to recompile the kernel.
--
--The "gpiommc" subdirectory at the configfs mountpoint is used for handling
--the dynamic configuration.
--
--To create a new device, it must first be allocated with mkdir.
--The following command will allocate a device named "my_mmc":
-- mkdir /config/gpiommc/my_mmc
--
--There are several configuration files available in the new
--/config/gpiommc/my_mmc/ directory:
--
--gpio_data_in = The SPI data-IN GPIO pin number.
--gpio_data_out = The SPI data-OUT GPIO pin number.
--gpio_clock = The SPI Clock GPIO pin number.
--gpio_chipselect = The SPI Chipselect GPIO pin number.
--gpio_chipselect_activelow = Boolean. If 0, Chipselect is active-HIGH.
-- If 1, Chipselect is active-LOW.
--spi_mode = The SPI data mode. Can be 0-3.
--spi_delay = Enable all delays in the lowlevel bitbanging.
--max_bus_speed = The maximum SPI bus speed. In Hertz.
--
--register = Not a configuration parameter.
-- Used to register the configured card
-- with the kernel.
--
--The device must first get configured and then registered by writing "1" to
--the "register" file.
--The configuration parameters "gpio_data_in", "gpio_data_out", "gpio_clock"
--and "gpio_chipselect" are essential and _must_ be configured before writing
--"1" to the "register" file. The registration will fail, otherwise.
--
--The default values for the other parameters are:
--gpio_chipselect_activelow = 1 (CS active-LOW)
--spi_mode = 0 (SPI_MODE_0)
--spi_delay = 1 (enabled)
--max_bus_speed = 5000000 (5 Mhz)
--
--Configuration values can not be changed after registration. To unregister
--the device, write a "0" to the "register" file. The configuration can be
--changed again after unregistering.
--
--To completely remove the device, simply rmdir the directory
--(/config/gpiommc/my_mmc in this example).
--There's no need to first unregister the device before removing it. That will
--be done automatically.
-Index: linux-2.6.26/drivers/mmc/host/gpiommc.c
-===================================================================
---- linux-2.6.26.orig/drivers/mmc/host/gpiommc.c 2008-12-12 21:55:07.000000000 +0100
-+++ /dev/null 1970-01-01 00:00:00.000000000 +0000
-@@ -1,624 +0,0 @@
--/*
-- * Driver an MMC/SD card on a bitbanging GPIO SPI bus.
-- * This module hooks up the mmc_spi and spi_gpio modules and also
-- * provides a configfs interface.
-- *
-- * 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/mmc/gpiommc.h>
--#include <linux/mmc/host.h>
--#include <linux/spi/spi_gpio.h>
--#include <linux/spi/mmc_spi.h>
--#include <linux/configfs.h>
--#include <linux/gpio.h>
--#include <asm/atomic.h>
--
--
--#define PFX "gpio-mmc: "
--
--
--struct gpiommc_device {
-- struct platform_device *pdev;
-- struct platform_device *spi_pdev;
-- struct spi_board_info boardinfo;
-- struct mmc_spi_platform_data mmc_spi_data;
--};
--
--
--MODULE_DESCRIPTION("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;
-- struct gpiommc_platform_data *pdata = d->pdev->dev.platform_data;
--
-- /* Bind the SPI master to the MMC-SPI host driver. */
-- strlcpy(bi->modalias, "mmc_spi", sizeof(bi->modalias));
--
-- bi->max_speed_hz = pdata->max_bus_speed;
-- bi->bus_num = master->bus_num;
-- bi->mode = pdata->mode;
-- bi->platform_data = &d->mmc_spi_data;
--
-- return 0;
--}
--
--static int gpiommc_probe(struct platform_device *pdev)
--{
-- struct gpiommc_platform_data *mmc_pdata = pdev->dev.platform_data;
-- struct spi_gpio_platform_data spi_pdata;
-- struct gpiommc_device *d;
-- int err;
--
-- err = -ENXIO;
-- if (!mmc_pdata)
-- goto error;
--
--#ifdef CONFIG_MMC_SPI_MODULE
-- err = request_module("mmc_spi");
-- if (err) {
-- printk(KERN_WARNING PFX
-- "Failed to request mmc_spi module.\n");
-- }
--#endif /* CONFIG_MMC_SPI_MODULE */
--
-- /* Allocate the GPIO-MMC device */
-- err = -ENOMEM;
-- d = kzalloc(sizeof(*d), GFP_KERNEL);
-- if (!d)
-- goto error;
-- d->pdev = pdev;
-- d->mmc_spi_data.ocr_mask = MMC_VDD_32_33 | MMC_VDD_33_34;
--
-- /* Create the SPI-GPIO device */
-- d->spi_pdev = platform_device_alloc(SPI_GPIO_PLATDEV_NAME,
-- spi_gpio_next_id());
-- if (!d->spi_pdev)
-- goto err_free_d;
--
-- memset(&spi_pdata, 0, sizeof(spi_pdata));
-- spi_pdata.pin_clk = mmc_pdata->pins.gpio_clk;
-- spi_pdata.pin_miso = mmc_pdata->pins.gpio_do;
-- spi_pdata.pin_mosi = mmc_pdata->pins.gpio_di;
-- spi_pdata.pin_cs = mmc_pdata->pins.gpio_cs;
-- spi_pdata.cs_activelow = mmc_pdata->pins.cs_activelow;
-- spi_pdata.no_spi_delay = mmc_pdata->no_spi_delay;
-- spi_pdata.boardinfo_setup = gpiommc_boardinfo_setup;
-- spi_pdata.boardinfo_setup_data = d;
--
-- err = platform_device_add_data(d->spi_pdev, &spi_pdata,
-- sizeof(spi_pdata));
-- if (err)
-- goto err_free_pdev;
-- err = platform_device_add(d->spi_pdev);
-- if (err)
-- goto err_free_pdata;
-- platform_set_drvdata(pdev, d);
--
-- printk(KERN_INFO PFX "MMC-Card \"%s\" "
-- "attached to GPIO pins di=%u, do=%u, clk=%u, cs=%u\n",
-- mmc_pdata->name, mmc_pdata->pins.gpio_di,
-- mmc_pdata->pins.gpio_do,
-- mmc_pdata->pins.gpio_clk,
-- mmc_pdata->pins.gpio_cs);
--
-- return 0;
--
--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);
--err_free_d:
-- kfree(d);
--error:
-- return err;
--}
--
--static int gpiommc_remove(struct platform_device *pdev)
--{
-- struct gpiommc_device *d = platform_get_drvdata(pdev);
-- struct gpiommc_platform_data *pdata = d->pdev->dev.platform_data;
--
-- platform_device_unregister(d->spi_pdev);
-- printk(KERN_INFO PFX "GPIO based MMC-Card \"%s\" removed\n",
-- pdata->name);
-- platform_device_put(d->spi_pdev);
--
-- return 0;
--}
--
--#ifdef CONFIG_GPIOMMC_CONFIGFS
--
--/* A device that was created through configfs */
--struct gpiommc_configfs_device {
-- struct config_item item;
-- /* The platform device, after registration. */
-- struct platform_device *pdev;
-- /* The configuration */
-- struct gpiommc_platform_data pdata;
-- /* Mutex to protect this structure */
-- struct mutex mutex;
--};
--
--#define GPIO_INVALID -1
--
--static inline bool gpiommc_is_registered(struct gpiommc_configfs_device *dev)
--{
-- return (dev->pdev != NULL);
--}
--
--static inline struct gpiommc_configfs_device *ci_to_gpiommc(struct config_item *item)
--{
-- return item ? container_of(item, struct gpiommc_configfs_device, item) : NULL;
--}
--
--static struct configfs_attribute gpiommc_attr_DI = {
-- .ca_owner = THIS_MODULE,
-- .ca_name = "gpio_data_in",
-- .ca_mode = S_IRUGO | S_IWUSR,
--};
--
--static struct configfs_attribute gpiommc_attr_DO = {
-- .ca_owner = THIS_MODULE,
-- .ca_name = "gpio_data_out",
-- .ca_mode = S_IRUGO | S_IWUSR,
--};
--
--static struct configfs_attribute gpiommc_attr_CLK = {
-- .ca_owner = THIS_MODULE,
-- .ca_name = "gpio_clock",
-- .ca_mode = S_IRUGO | S_IWUSR,
--};
--
--static struct configfs_attribute gpiommc_attr_CS = {
-- .ca_owner = THIS_MODULE,
-- .ca_name = "gpio_chipselect",
-- .ca_mode = S_IRUGO | S_IWUSR,
--};
--
--static struct configfs_attribute gpiommc_attr_CS_activelow = {
-- .ca_owner = THIS_MODULE,
-- .ca_name = "gpio_chipselect_activelow",
-- .ca_mode = S_IRUGO | S_IWUSR,
--};
--
--static struct configfs_attribute gpiommc_attr_spimode = {
-- .ca_owner = THIS_MODULE,
-- .ca_name = "spi_mode",
-- .ca_mode = S_IRUGO | S_IWUSR,
--};
--
--static struct configfs_attribute gpiommc_attr_spidelay = {
-- .ca_owner = THIS_MODULE,
-- .ca_name = "spi_delay",
-- .ca_mode = S_IRUGO | S_IWUSR,
--};
--
--static struct configfs_attribute gpiommc_attr_max_bus_speed = {
-- .ca_owner = THIS_MODULE,
-- .ca_name = "max_bus_speed",
-- .ca_mode = S_IRUGO | S_IWUSR,
--};
--
--static struct configfs_attribute gpiommc_attr_register = {
-- .ca_owner = THIS_MODULE,
-- .ca_name = "register",
-- .ca_mode = S_IRUGO | S_IWUSR,
--};
--
--static struct configfs_attribute *gpiommc_config_attrs[] = {
-- &gpiommc_attr_DI,
-- &gpiommc_attr_DO,
-- &gpiommc_attr_CLK,
-- &gpiommc_attr_CS,
-- &gpiommc_attr_CS_activelow,
-- &gpiommc_attr_spimode,
-- &gpiommc_attr_spidelay,
-- &gpiommc_attr_max_bus_speed,
-- &gpiommc_attr_register,
-- NULL,
--};
--
--static ssize_t gpiommc_config_attr_show(struct config_item *item,
-- struct configfs_attribute *attr,
-- char *page)
--{
-- struct gpiommc_configfs_device *dev = ci_to_gpiommc(item);
-- ssize_t count = 0;
-- unsigned int gpio;
-- int err = 0;
--
-- mutex_lock(&dev->mutex);
--
-- if (attr == &gpiommc_attr_DI) {
-- gpio = dev->pdata.pins.gpio_di;
-- if (gpio == GPIO_INVALID)
-- count = snprintf(page, PAGE_SIZE, "not configured\n");
-- else
-- count = snprintf(page, PAGE_SIZE, "%u\n", gpio);
-- goto out;
-- }
-- if (attr == &gpiommc_attr_DO) {
-- gpio = dev->pdata.pins.gpio_do;
-- if (gpio == GPIO_INVALID)
-- count = snprintf(page, PAGE_SIZE, "not configured\n");
-- else
-- count = snprintf(page, PAGE_SIZE, "%u\n", gpio);
-- goto out;
-- }
-- if (attr == &gpiommc_attr_CLK) {
-- gpio = dev->pdata.pins.gpio_clk;
-- if (gpio == GPIO_INVALID)
-- count = snprintf(page, PAGE_SIZE, "not configured\n");
-- else
-- count = snprintf(page, PAGE_SIZE, "%u\n", gpio);
-- goto out;
-- }
-- if (attr == &gpiommc_attr_CS) {
-- gpio = dev->pdata.pins.gpio_cs;
-- if (gpio == GPIO_INVALID)
-- count = snprintf(page, PAGE_SIZE, "not configured\n");
-- else
-- count = snprintf(page, PAGE_SIZE, "%u\n", gpio);
-- goto out;
-- }
-- if (attr == &gpiommc_attr_CS_activelow) {
-- count = snprintf(page, PAGE_SIZE, "%u\n",
-- dev->pdata.pins.cs_activelow);
-- goto out;
-- }
-- if (attr == &gpiommc_attr_spimode) {
-- count = snprintf(page, PAGE_SIZE, "%u\n",
-- dev->pdata.mode);
-- goto out;
-- }
-- if (attr == &gpiommc_attr_spidelay) {
-- count = snprintf(page, PAGE_SIZE, "%u\n",
-- !dev->pdata.no_spi_delay);
-- goto out;
-- }
-- if (attr == &gpiommc_attr_max_bus_speed) {
-- count = snprintf(page, PAGE_SIZE, "%u\n",
-- dev->pdata.max_bus_speed);
-- goto out;
-- }
-- if (attr == &gpiommc_attr_register) {
-- count = snprintf(page, PAGE_SIZE, "%u\n",
-- gpiommc_is_registered(dev));
-- goto out;
-- }
-- WARN_ON(1);
-- err = -ENOSYS;
--out:
-- mutex_unlock(&dev->mutex);
--
-- return err ? err : count;
--}
--
--static int gpiommc_do_register(struct gpiommc_configfs_device *dev,
-- const char *name)
--{
-- int err;
--
-- if (gpiommc_is_registered(dev))
-- return 0;
--
-- if (!gpio_is_valid(dev->pdata.pins.gpio_di) ||
-- !gpio_is_valid(dev->pdata.pins.gpio_do) ||
-- !gpio_is_valid(dev->pdata.pins.gpio_clk) ||
-- !gpio_is_valid(dev->pdata.pins.gpio_cs)) {
-- printk(KERN_ERR PFX
-- "configfs: Invalid GPIO pin number(s)\n");
-- return -EINVAL;
-- }
--
-- strlcpy(dev->pdata.name, name,
-- sizeof(dev->pdata.name));
--
-- dev->pdev = platform_device_alloc(GPIOMMC_PLATDEV_NAME,
-- gpiommc_next_id());
-- if (!dev->pdev)
-- return -ENOMEM;
-- err = platform_device_add_data(dev->pdev, &dev->pdata,
-- sizeof(dev->pdata));
-- if (err) {
-- platform_device_put(dev->pdev);
-- return err;
-- }
-- err = platform_device_add(dev->pdev);
-- if (err) {
-- platform_device_put(dev->pdev);
-- return err;
-- }
--
-- return 0;
--}
--
--static void gpiommc_do_unregister(struct gpiommc_configfs_device *dev)
--{
-- if (!gpiommc_is_registered(dev))
-- return;
--
-- platform_device_unregister(dev->pdev);
-- dev->pdev = NULL;
--}
--
--static ssize_t gpiommc_config_attr_store(struct config_item *item,
-- struct configfs_attribute *attr,
-- const char *page, size_t count)
--{
-- struct gpiommc_configfs_device *dev = ci_to_gpiommc(item);
-- int err = -EINVAL;
-- unsigned long data;
--
-- mutex_lock(&dev->mutex);
--
-- if (attr == &gpiommc_attr_register) {
-- err = strict_strtoul(page, 10, &data);
-- if (err)
-- goto out;
-- err = -EINVAL;
-- if (data == 1)
-- err = gpiommc_do_register(dev, item->ci_name);
-- if (data == 0) {
-- gpiommc_do_unregister(dev);
-- err = 0;
-- }
-- goto out;
-- }
--
-- if (gpiommc_is_registered(dev)) {
-- /* The rest of the config parameters can only be set
-- * as long as the device is not registered, yet. */
-- err = -EBUSY;
-- goto out;
-- }
--
-- if (attr == &gpiommc_attr_DI) {
-- err = strict_strtoul(page, 10, &data);
-- if (err)
-- goto out;
-- err = -EINVAL;
-- if (!gpio_is_valid(data))
-- goto out;
-- dev->pdata.pins.gpio_di = data;
-- err = 0;
-- goto out;
-- }
-- if (attr == &gpiommc_attr_DO) {
-- err = strict_strtoul(page, 10, &data);
-- if (err)
-- goto out;
-- err = -EINVAL;
-- if (!gpio_is_valid(data))
-- goto out;
-- dev->pdata.pins.gpio_do = data;
-- err = 0;
-- goto out;
-- }
-- if (attr == &gpiommc_attr_CLK) {
-- err = strict_strtoul(page, 10, &data);
-- if (err)
-- goto out;
-- err = -EINVAL;
-- if (!gpio_is_valid(data))
-- goto out;
-- dev->pdata.pins.gpio_clk = data;
-- err = 0;
-- goto out;
-- }
-- if (attr == &gpiommc_attr_CS) {
-- err = strict_strtoul(page, 10, &data);
-- if (err)
-- goto out;
-- err = -EINVAL;
-- if (!gpio_is_valid(data))
-- goto out;
-- dev->pdata.pins.gpio_cs = data;
-- err = 0;
-- goto out;
-- }
-- if (attr == &gpiommc_attr_CS_activelow) {
-- err = strict_strtoul(page, 10, &data);
-- if (err)
-- goto out;
-- err = -EINVAL;
-- if (data != 0 && data != 1)
-- goto out;
-- dev->pdata.pins.cs_activelow = data;
-- err = 0;
-- goto out;
-- }
-- if (attr == &gpiommc_attr_spimode) {
-- err = strict_strtoul(page, 10, &data);
-- if (err)
-- goto out;
-- err = -EINVAL;
-- switch (data) {
-- case 0:
-- dev->pdata.mode = SPI_MODE_0;
-- break;
-- case 1:
-- dev->pdata.mode = SPI_MODE_1;
-- break;
-- case 2:
-- dev->pdata.mode = SPI_MODE_2;
-- break;
-- case 3:
-- dev->pdata.mode = SPI_MODE_3;
-- break;
-- default:
-- goto out;
-- }
-- err = 0;
-- goto out;
-- }
-- if (attr == &gpiommc_attr_spidelay) {
-- err = strict_strtoul(page, 10, &data);
-- if (err)
-- goto out;
-- err = -EINVAL;
-- if (data != 0 && data != 1)
-- goto out;
-- dev->pdata.no_spi_delay = !data;
-- err = 0;
-- goto out;
-- }
-- if (attr == &gpiommc_attr_max_bus_speed) {
-- err = strict_strtoul(page, 10, &data);
-- if (err)
-- goto out;
-- err = -EINVAL;
-- if (data > UINT_MAX)
-- goto out;
-- dev->pdata.max_bus_speed = data;
-- err = 0;
-- goto out;
-- }
-- WARN_ON(1);
-- err = -ENOSYS;
--out:
-- mutex_unlock(&dev->mutex);
--
-- return err ? err : count;
--}
--
--static void gpiommc_config_item_release(struct config_item *item)
--{
-- struct gpiommc_configfs_device *dev = ci_to_gpiommc(item);
--
-- kfree(dev);
--}
--
--static struct configfs_item_operations gpiommc_config_item_ops = {
-- .release = gpiommc_config_item_release,
-- .show_attribute = gpiommc_config_attr_show,
-- .store_attribute = gpiommc_config_attr_store,
--};
--
--static struct config_item_type gpiommc_dev_ci_type = {
-- .ct_item_ops = &gpiommc_config_item_ops,
-- .ct_attrs = gpiommc_config_attrs,
-- .ct_owner = THIS_MODULE,
--};
--
--static struct config_item *gpiommc_make_item(struct config_group *group,
-- const char *name)
--{
-- struct gpiommc_configfs_device *dev;
--
-- if (strlen(name) > GPIOMMC_MAX_NAMELEN) {
-- printk(KERN_ERR PFX "configfs: device name too long\n");
-- return NULL;
-- }
--
-- dev = kzalloc(sizeof(*dev), GFP_KERNEL);
-- if (!dev)
-- return NULL;
--
-- mutex_init(&dev->mutex);
-- config_item_init_type_name(&dev->item, name,
-- &gpiommc_dev_ci_type);
--
-- /* Assign default configuration */
-- dev->pdata.pins.gpio_di = GPIO_INVALID;
-- dev->pdata.pins.gpio_do = GPIO_INVALID;
-- dev->pdata.pins.gpio_clk = GPIO_INVALID;
-- dev->pdata.pins.gpio_cs = GPIO_INVALID;
-- dev->pdata.pins.cs_activelow = 1;
-- dev->pdata.mode = SPI_MODE_0;
-- dev->pdata.no_spi_delay = 0;
-- dev->pdata.max_bus_speed = 5000000; /* 5 MHz */
--
-- return &(dev->item);
--}
--
--static void gpiommc_drop_item(struct config_group *group,
-- struct config_item *item)
--{
-- struct gpiommc_configfs_device *dev = ci_to_gpiommc(item);
--
-- gpiommc_do_unregister(dev);
-- kfree(dev);
--}
--
--static struct configfs_group_operations gpiommc_ct_group_ops = {
-- .make_item = gpiommc_make_item,
-- .drop_item = gpiommc_drop_item,
--};
--
--static struct config_item_type gpiommc_ci_type = {
-- .ct_group_ops = &gpiommc_ct_group_ops,
-- .ct_owner = THIS_MODULE,
--};
--
--static struct configfs_subsystem gpiommc_subsys = {
-- .su_group = {
-- .cg_item = {
-- .ci_namebuf = GPIOMMC_PLATDEV_NAME,
-- .ci_type = &gpiommc_ci_type,
-- },
-- },
-- .su_mutex = __MUTEX_INITIALIZER(gpiommc_subsys.su_mutex),
--};
--
--#endif /* CONFIG_GPIOMMC_CONFIGFS */
--
--static struct platform_driver gpiommc_plat_driver = {
-- .probe = gpiommc_probe,
-- .remove = gpiommc_remove,
-- .driver = {
-- .name = GPIOMMC_PLATDEV_NAME,
-- .owner = THIS_MODULE,
-- },
--};
--
--int gpiommc_next_id(void)
--{
-- static atomic_t counter = ATOMIC_INIT(-1);
--
-- return atomic_inc_return(&counter);
--}
--EXPORT_SYMBOL(gpiommc_next_id);
--
--static int __init gpiommc_modinit(void)
--{
-- int err;
--
-- err = platform_driver_register(&gpiommc_plat_driver);
-- if (err)
-- return err;
--
--#ifdef CONFIG_GPIOMMC_CONFIGFS
-- config_group_init(&gpiommc_subsys.su_group);
-- err = configfs_register_subsystem(&gpiommc_subsys);
-- if (err) {
-- platform_driver_unregister(&gpiommc_plat_driver);
-- return err;
-- }
--#endif /* CONFIG_GPIOMMC_CONFIGFS */
--
-- return 0;
--}
--module_init(gpiommc_modinit);
--
--static void __exit gpiommc_modexit(void)
--{
--#ifdef CONFIG_GPIOMMC_CONFIGFS
-- configfs_unregister_subsystem(&gpiommc_subsys);
--#endif
-- platform_driver_unregister(&gpiommc_plat_driver);
--}
--module_exit(gpiommc_modexit);
-Index: linux-2.6.26/drivers/mmc/host/Kconfig
-===================================================================
---- linux-2.6.26.orig/drivers/mmc/host/Kconfig 2008-12-12 21:55:07.000000000 +0100
-+++ linux-2.6.26/drivers/mmc/host/Kconfig 2008-12-12 21:55:25.000000000 +0100
-@@ -130,27 +130,3 @@ config MMC_SPI
-
- If unsure, or if your system has no SPI master driver, say N.
-
--config GPIOMMC
-- tristate "MMC/SD over GPIO-based SPI"
-- depends on MMC && MMC_SPI && SPI_GPIO
-- help
-- This driver hooks up the mmc_spi and spi_gpio modules so that
-- MMC/SD cards can be used on a GPIO based bus by bitbanging
-- the SPI protocol in software.
--
-- This driver provides a configfs interface to dynamically create
-- and destroy GPIO-based MMC/SD card devices. It also provides
-- a platform device interface API.
-- See Documentation/gpiommc.txt for details.
--
-- The module will be called gpiommc.
--
-- If unsure, say N.
--
--config GPIOMMC_CONFIGFS
-- bool
-- depends on GPIOMMC && CONFIGFS_FS
-- default y
-- help
-- This option automatically enables configfs support for gpiommc
-- if configfs is available.
-Index: linux-2.6.26/drivers/mmc/host/Makefile
-===================================================================
---- linux-2.6.26.orig/drivers/mmc/host/Makefile 2008-12-12 21:55:07.000000000 +0100
-+++ linux-2.6.26/drivers/mmc/host/Makefile 2008-12-12 21:55:25.000000000 +0100
-@@ -17,4 +17,4 @@ obj-$(CONFIG_MMC_OMAP) += omap.o
- obj-$(CONFIG_MMC_AT91) += at91_mci.o
- obj-$(CONFIG_MMC_TIFM_SD) += tifm_sd.o
- obj-$(CONFIG_MMC_SPI) += mmc_spi.o
--obj-$(CONFIG_GPIOMMC) += gpiommc.o
-+
-Index: linux-2.6.26/drivers/spi/Kconfig
-===================================================================
---- linux-2.6.26.orig/drivers/spi/Kconfig 2008-12-12 21:55:07.000000000 +0100
-+++ linux-2.6.26/drivers/spi/Kconfig 2008-12-12 21:55:25.000000000 +0100
-@@ -100,19 +100,6 @@ config SPI_BUTTERFLY
- inexpensive battery powered microcontroller evaluation board.
- This same cable can be used to flash new firmware.
-
--config SPI_GPIO
-- tristate "GPIO API based bitbanging SPI controller"
-- depends on SPI_MASTER && GENERIC_GPIO
-- select SPI_BITBANG
-- help
-- This is a platform driver that can be used for bitbanging
-- an SPI bus over GPIO pins.
-- Select this if you have any SPI device that is connected via
-- GPIO pins.
-- The module will be called spi_gpio.
--
-- If unsure, say N.
--
- config SPI_IMX
- tristate "Freescale iMX SPI controller"
- depends on SPI_MASTER && ARCH_IMX && EXPERIMENTAL
-Index: linux-2.6.26/drivers/spi/Makefile
-===================================================================
---- linux-2.6.26.orig/drivers/spi/Makefile 2008-12-12 21:55:07.000000000 +0100
-+++ linux-2.6.26/drivers/spi/Makefile 2008-12-12 21:55:25.000000000 +0100
-@@ -16,7 +16,6 @@ obj-$(CONFIG_SPI_BFIN) += spi_bfin5xx.
- obj-$(CONFIG_SPI_BITBANG) += spi_bitbang.o
- obj-$(CONFIG_SPI_AU1550) += au1550_spi.o
- obj-$(CONFIG_SPI_BUTTERFLY) += spi_butterfly.o
--obj-$(CONFIG_SPI_GPIO) += spi_gpio.o
- obj-$(CONFIG_SPI_IMX) += spi_imx.o
- obj-$(CONFIG_SPI_LM70_LLP) += spi_lm70llp.o
- obj-$(CONFIG_SPI_PXA2XX) += pxa2xx_spi.o
-Index: linux-2.6.26/drivers/spi/spi_gpio.c
-===================================================================
---- linux-2.6.26.orig/drivers/spi/spi_gpio.c 2008-12-12 21:55:07.000000000 +0100
-+++ /dev/null 1970-01-01 00:00:00.000000000 +0000
-@@ -1,251 +0,0 @@
--/*
-- * 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>
--#include <linux/gpio.h>
--#include <asm/atomic.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_PLATDEV_NAME,
-- .owner = THIS_MODULE,
-- },
-- .probe = spi_gpio_probe,
-- .remove = __devexit_p(spi_gpio_remove),
--};
--
--int spi_gpio_next_id(void)
--{
-- static atomic_t counter = ATOMIC_INIT(-1);
--
-- return atomic_inc_return(&counter);
--}
--EXPORT_SYMBOL(spi_gpio_next_id);
--
--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 bitbanging SPI driver");
--MODULE_LICENSE("GPL v2");
-Index: linux-2.6.26/include/linux/mmc/gpiommc.h
-===================================================================
---- linux-2.6.26.orig/include/linux/mmc/gpiommc.h 2008-12-12 21:55:07.000000000 +0100
-+++ /dev/null 1970-01-01 00:00:00.000000000 +0000
-@@ -1,71 +0,0 @@
--/*
-- * Device driver for MMC/SD cards driven over a GPIO bus.
-- *
-- * Copyright (c) 2008 Michael Buesch
-- *
-- * Licensed under the GNU/GPL version 2.
-- */
--#ifndef LINUX_GPIOMMC_H_
--#define LINUX_GPIOMMC_H_
--
--#include <linux/types.h>
--
--
--#define GPIOMMC_MAX_NAMELEN 15
--#define GPIOMMC_MAX_NAMELEN_STR __stringify(GPIOMMC_MAX_NAMELEN)
--
--/**
-- * struct gpiommc_pins - Hardware pin assignments
-- *
-- * @gpio_di: The GPIO number of the DATA IN pin
-- * @gpio_do: The GPIO number of the DATA OUT pin
-- * @gpio_clk: The GPIO number of the CLOCK pin
-- * @gpio_cs: The GPIO number of the CHIPSELECT pin
-- * @cs_activelow: If true, the chip is considered selected if @gpio_cs is low.
-- */
--struct gpiommc_pins {
-- unsigned int gpio_di;
-- unsigned int gpio_do;
-- unsigned int gpio_clk;
-- unsigned int gpio_cs;
-- bool cs_activelow;
--};
--
--/**
-- * struct gpiommc_platform_data - Platform data for a MMC-over-SPI-GPIO device.
-- *
-- * @name: The unique name string of the device.
-- * @pins: The hardware pin assignments.
-- * @mode: The hardware mode. This is either SPI_MODE_0,
-- * SPI_MODE_1, SPI_MODE_2 or SPI_MODE_3. See the SPI documentation.
-- * @no_spi_delay: Do not use delays in the lowlevel SPI bitbanging code.
-- * This is not standards compliant, but may be required for some
-- * embedded machines to gain reasonable speed.
-- * @max_bus_speed: The maximum speed of the SPI bus, in Hertz.
-- */
--struct gpiommc_platform_data {
-- char name[GPIOMMC_MAX_NAMELEN + 1];
-- struct gpiommc_pins pins;
-- u8 mode;
-- bool no_spi_delay;
-- unsigned int max_bus_speed;
--};
--
--/**
-- * GPIOMMC_PLATDEV_NAME - The platform device name string.
-- *
-- * The name string that has to be used for platform_device_alloc
-- * when allocating a gpiommc device.
-- */
--#define GPIOMMC_PLATDEV_NAME "gpiommc"
--
--/**
-- * gpiommc_next_id - Get another platform device ID number.
-- *
-- * This returns the next platform device ID number that has to be used
-- * for platform_device_alloc. The ID is opaque and should not be used for
-- * anything else.
-- */
--int gpiommc_next_id(void);
--
--#endif /* LINUX_GPIOMMC_H_ */
-Index: linux-2.6.26/include/linux/spi/spi_gpio.h
-===================================================================
---- linux-2.6.26.orig/include/linux/spi/spi_gpio.h 2008-12-12 21:55:07.000000000 +0100
-+++ /dev/null 1970-01-01 00:00:00.000000000 +0000
-@@ -1,73 +0,0 @@
--/*
-- * spi_gpio interface to platform code
-- *
-- * Copyright (c) 2008 Piotr Skamruk
-- * Copyright (c) 2008 Michael Buesch
-- *
-- * 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;
--};
--
--/**
-- * SPI_GPIO_PLATDEV_NAME - The platform device name string.
-- *
-- * The name string that has to be used for platform_device_alloc
-- * when allocating a spi-gpio device.
-- */
--#define SPI_GPIO_PLATDEV_NAME "spi-gpio"
--
--/**
-- * spi_gpio_next_id - Get another platform device ID number.
-- *
-- * This returns the next platform device ID number that has to be used
-- * for platform_device_alloc. The ID is opaque and should not be used for
-- * anything else.
-- */
--int spi_gpio_next_id(void);
--
--#endif /* _LINUX_SPI_SPI_GPIO */
-Index: linux-2.6.26/MAINTAINERS
-===================================================================
---- linux-2.6.26.orig/MAINTAINERS 2008-12-12 21:55:07.000000000 +0100
-+++ linux-2.6.26/MAINTAINERS 2008-12-12 21:55:25.000000000 +0100
-@@ -1818,11 +1818,6 @@ L: gigaset307x-common@lists.sourceforge.
- W: http://gigaset307x.sourceforge.net/
- S: Maintained
-
--GPIOMMC DRIVER
--P: Michael Buesch
--M: mb@bu3sch.de
--S: Maintained
--
- HARDWARE MONITORING
- P: Mark M. Hoffman
- M: mhoffman@lightlink.com
-@@ -3800,11 +3795,6 @@ L: cbe-oss-dev@ozlabs.org
- W: http://www.ibm.com/developerworks/power/cell/
- S: Supported
-
--SPI GPIO MASTER DRIVER
--P: Michael Buesch
--M: mb@bu3sch.de
--S: Maintained
--
- STABLE BRANCH:
- P: Greg Kroah-Hartman
- M: greg@kroah.com
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-28 16:23:50 +0000