Update GPIO-based MMC driver

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@11864 3c298f89-4303-0410-b956-a3cf2f4a3e73

4 files changed, 5 insertions, 353 deletions

diff --git a/package/mmc_over_gpio/Makefile b/package/mmc_over_gpio/Makefile
index abf89379f..20b7b6ac4 100644
--- a/package/mmc_over_gpio/Makefile
+++ b/package/mmc_over_gpio/Makefile
@@ -4,8 +4,6 @@
 # This is free software, licensed under the GNU General Public License v2.
 # See /LICENSE for more information.
 
-#XXX This package will go away once the stuff is merged into the kernel.
-
 include $(TOPDIR)/rules.mk
 include $(INCLUDE_DIR)/kernel.mk
 
@@ -18,9 +16,10 @@ include $(INCLUDE_DIR)/package.mk
 define KernelPackage/mmc-over-gpio
   SUBMENU:=Other modules
   DEPENDS:=@GPIO_SUPPORT +kmod-mmc-spi +kmod-spi-gpio
+  KCONFIG:=CONFIG_GPIOMMC
   TITLE:=MMC/SD card over GPIO support
-  FILES:=$(PKG_BUILD_DIR)/mmc_over_spigpio.$(LINUX_KMOD_SUFFIX)
-  AUTOLOAD:=$(call AutoLoad,93,spi_gpio mmc_over_spigpio)
+  FILES:=$(LINUX_DIR)/drivers/mmc/host/gpiommc.$(LINUX_KMOD_SUFFIX)
+  AUTOLOAD:=$(call AutoLoad,93,spi_gpio gpiommc)
 endef
 
 define KernelPackage/mmc-over-gpio/description
@@ -29,16 +28,9 @@ 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
 
 define KernelPackage/mmc-over-gpio/install
diff --git a/package/mmc_over_gpio/files/mmc_over_gpio.init b/package/mmc_over_gpio/files/mmc_over_gpio.init
index 88d9e4102..57c5695d1 100644
--- a/package/mmc_over_gpio/files/mmc_over_gpio.init
+++ b/package/mmc_over_gpio/files/mmc_over_gpio.init
@@ -3,11 +3,11 @@
 START=90
 
 SYSFS="/sys"
-SYSFS_DRIVERDIR="$SYSFS/bus/platform/drivers/spi-gpio-mmc"
+SYSFS_DRIVERDIR="$SYSFS/bus/platform/drivers/gpiommc"
 
 # add_device(name, DI_pin, DO_pin, CLK_pin, CS_pin, mode)
 add_device() {
-	echo -n "$1" "$2","$3","$4","$5" "$6" > $SYSFS_DRIVERDIR/add
+	echo -n "$1" "$2" "$3" "$4" "$5" "$6" > $SYSFS_DRIVERDIR/add
 }
 
 # remove_device(name)
diff --git a/package/mmc_over_gpio/src/Makefile b/package/mmc_over_gpio/src/Makefile
deleted file mode 100644
index b052c405a..000000000
--- a/package/mmc_over_gpio/src/Makefile
+++ /dev/null
@@ -1 +0,0 @@
-obj-m += mmc_over_spigpio.o
diff --git a/package/mmc_over_gpio/src/mmc_over_spigpio.c b/package/mmc_over_gpio/src/mmc_over_spigpio.c
deleted file mode 100644
index 113b518a5..000000000
--- a/package/mmc_over_gpio/src/mmc_over_spigpio.c
+++ /dev/null
@@ -1,339 +0,0 @@
-/*
- * 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>
-
-
-/* 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);