--- /dev/null
+#
+# Copyright (C) 2008 OpenWrt.org
+#
+# This is free software, licensed under the GNU General Public License v2.
+# See /LICENSE for more information.
+#
+
+include $(TOPDIR)/rules.mk
+include $(INCLUDE_DIR)/kernel.mk
+
+PKG_NAME:=i2c-gpio-custom
+PKG_RELEASE:=1
+
+include $(INCLUDE_DIR)/package.mk
+
+define KernelPackage/i2c-gpio-custom
+ SUBMENU:=I2C support
+ TITLE:=Custom GPIO-based I2C device
+ DEPENDS:=@GPIO_SUPPORT kmod-i2c-core +kmod-i2c-gpio
+ FILES:=$(PKG_BUILD_DIR)/i2c-gpio-custom.$(LINUX_KMOD_SUFFIX)
+ AUTOLOAD:=$(call AutoLoad,58,i2c-gpio-custom)
+ KCONFIG:=
+endef
+
+define KernelPackage/i2c-gpio-custom/description
+ Kernel module for register a custom i2c-gpio platform device.
+endef
+
+EXTRA_KCONFIG:= \
+ CONFIG_I2C_GPIO_CUSTOM=m
+
+EXTRA_CFLAGS:= \
+ $(patsubst CONFIG_%, -DCONFIG_%=1, $(patsubst %=m,%,$(filter %=m,$(EXTRA_KCONFIG)))) \
+ $(patsubst CONFIG_%, -DCONFIG_%=1, $(patsubst %=y,%,$(filter %=y,$(EXTRA_KCONFIG)))) \
+
+MAKE_OPTS:= \
+ ARCH="$(LINUX_KARCH)" \
+ CROSS_COMPILE="$(TARGET_CROSS)" \
+ SUBDIRS="$(PKG_BUILD_DIR)" \
+ EXTRA_CFLAGS="$(EXTRA_CFLAGS)" \
+ LINUXINCLUDE="-I$(LINUX_DIR)/include -include linux/autoconf.h" \
+ $(EXTRA_KCONFIG)
+
+define Build/Prepare
+ mkdir -p $(PKG_BUILD_DIR)
+ $(CP) ./src/* $(PKG_BUILD_DIR)/
+endef
+
+define Build/Compile
+ $(MAKE) -C "$(LINUX_DIR)" \
+ $(MAKE_OPTS) \
+ modules
+endef
+
+$(eval $(call KernelPackage,i2c-gpio-custom))
--- /dev/null
+config I2C_GPIO_CUSTOM
+ tristate "Custom GPIO-based I2C driver"
+ depends on GENERIC_GPIO
+ select I2C_GPIO
+ help
+ This is an I2C driver to register 1 to 4 custom I2C buses using
+ GPIO lines.
+
+ This support is also available as a module. If so, the module
+ will be called i2c-gpio-custom.
--- /dev/null
+obj-${CONFIG_I2C_GPIO_CUSTOM} += i2c-gpio-custom.o
\ No newline at end of file
--- /dev/null
+/*
+ * Custom GPIO-based I2C driver
+ *
+ * Copyright (C) 2007 Gabor Juhos <juhosg at openwrt.org>
+ *
+ * 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.
+ *
+ * ---------------------------------------------------------------------------
+ *
+ * The behaviour of this driver can be altered by setting some parameters
+ * from the insmod command line.
+ *
+ * The following parameters are adjustable:
+ *
+ * bus0 These four arguments can be arrays of
+ * bus1 1-8 unsigned integers as follows:
+ * bus2
+ * bus3 <id>,<sda>,<scl>,<udelay>,<timeout>,<sda_od>,<scl_od>,<scl_oo>
+ *
+ * where:
+ *
+ * <id> ID to used as device_id for the corresponding bus (required)
+ * <sda> GPIO pin ID to used for SDA (required)
+ * <scl> GPIO pin ID to used for SCL (required)
+ * <udelay> signal toggle delay.
+ * <timeout> clock stretching timeout.
+ * <sda_od> SDA is configured as open drain.
+ * <scl_od> SCL is configured as open drain.
+ * <scl_oo> SCL output drivers cannot be turned off.
+ *
+ * See include/i2c-gpio.h for more information about the parameters.
+ *
+ * If this driver is built into the kernel, you can use the following kernel
+ * command line parameters, with the same values as the corresponding module
+ * parameters listed above:
+ *
+ * i2c-gpio-custom.bus0
+ * i2c-gpio-custom.bus1
+ * i2c-gpio-custom.bus2
+ * i2c-gpio-custom.bus3
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+
+#include <linux/i2c-gpio.h>
+
+#define DRV_NAME "i2c-gpio-custom"
+#define DRV_DESC "Custom GPIO-based I2C driver"
+#define DRV_VERSION "0.1.0"
+
+#define PFX DRV_NAME ": "
+
+#define BUS_PARAM_ID 0
+#define BUS_PARAM_SDA 1
+#define BUS_PARAM_SCL 2
+#define BUS_PARAM_UDELAY 3
+#define BUS_PARAM_TIMEOUT 4
+#define BUS_PARAM_SDA_OD 5
+#define BUS_PARAM_SCL_OD 6
+#define BUS_PARAM_SCL_OO 7
+
+#define BUS_PARAM_REQUIRED 3
+#define BUS_PARAM_COUNT 8
+#define BUS_COUNT_MAX 4
+
+static unsigned int bus0[BUS_PARAM_COUNT] __initdata;
+static unsigned int bus1[BUS_PARAM_COUNT] __initdata;
+static unsigned int bus2[BUS_PARAM_COUNT] __initdata;
+static unsigned int bus3[BUS_PARAM_COUNT] __initdata;
+
+static unsigned int bus_nump[BUS_COUNT_MAX] __initdata;
+
+#define BUS_PARM_DESC \
+ " config -> id,sda,scl[,udelay,timeout,sda_od,scl_od,scl_oo]"
+
+module_param_array(bus0, uint, &bus_nump[0], 0);
+MODULE_PARM_DESC(bus0, "bus0" BUS_PARM_DESC);
+module_param_array(bus1, uint, &bus_nump[1], 0);
+MODULE_PARM_DESC(bus1, "bus1" BUS_PARM_DESC);
+module_param_array(bus2, uint, &bus_nump[2], 0);
+MODULE_PARM_DESC(bus2, "bus2" BUS_PARM_DESC);
+module_param_array(bus3, uint, &bus_nump[3], 0);
+MODULE_PARM_DESC(bus3, "bus3" BUS_PARM_DESC);
+
+static struct platform_device *devices[BUS_COUNT_MAX];
+static unsigned int nr_devices;
+
+static void i2c_gpio_custom_cleanup(void)
+{
+ int i;
+
+ for (i = 0; i < nr_devices; i++)
+ if (devices[i])
+ platform_device_unregister(devices[i]);
+}
+
+static int __init i2c_gpio_custom_add_one(unsigned int id, unsigned int *params)
+{
+ struct platform_device *pdev;
+ struct i2c_gpio_platform_data pdata;
+ int err;
+
+ if (!bus_nump[id])
+ return 0;
+
+ if (bus_nump[id] < BUS_PARAM_REQUIRED) {
+ printk(KERN_ERR PFX "not enough parameters for bus%d\n", id);
+ err = -EINVAL;
+ goto err;
+ }
+
+ pdev = platform_device_alloc("i2c-gpio", params[BUS_PARAM_ID]);
+ if (!pdev) {
+ err = -ENOMEM;
+ goto err;
+ }
+
+ devices[nr_devices++] = pdev;
+
+ pdata.sda_pin = params[BUS_PARAM_SDA];
+ pdata.scl_pin = params[BUS_PARAM_SCL];
+ pdata.udelay = params[BUS_PARAM_UDELAY];
+ pdata.timeout = params[BUS_PARAM_TIMEOUT];
+ pdata.sda_is_open_drain = params[BUS_PARAM_SDA_OD] != 0;
+ pdata.scl_is_open_drain = params[BUS_PARAM_SCL_OD] != 0;
+ pdata.scl_is_output_only = params[BUS_PARAM_SCL_OO] != 0;
+
+ err = platform_device_add_data(pdev, &pdata, sizeof(pdata));
+ if (err)
+ goto err;
+
+ err = platform_device_register(pdev);
+ if (err)
+ goto err;
+
+ return 0;
+
+err:
+ return err;
+}
+
+static int __init i2c_gpio_custom_probe(void)
+{
+ int err;
+
+ printk(KERN_INFO DRV_DESC " version " DRV_VERSION "\n");
+
+ err = i2c_gpio_custom_add_one(0, bus0);
+ if (err) goto err;
+
+ err = i2c_gpio_custom_add_one(1, bus1);
+ if (err) goto err;
+
+ err = i2c_gpio_custom_add_one(2, bus2);
+ if (err) goto err;
+
+ err = i2c_gpio_custom_add_one(3, bus3);
+ if (err) goto err;
+
+ if (!nr_devices) {
+ printk(KERN_ERR PFX "no bus parameter(s) specified\n");
+ err = -ENODEV;
+ goto err;
+ }
+
+ return 0;
+
+err:
+ i2c_gpio_custom_cleanup();
+ return err;
+}
+
+#ifdef MODULE
+static int __init i2c_gpio_custom_init(void)
+{
+ return i2c_gpio_custom_probe();
+}
+module_init(i2c_gpio_custom_init);
+
+static void __exit i2c_gpio_custom_exit(void)
+{
+ i2c_gpio_custom_cleanup();
+}
+module_exit(i2c_gpio_custom_exit);
+#else
+subsys_initcall(i2c_gpio_custom_probe);
+#endif /* MODULE*/
+
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Gabor Juhos <juhosg at openwrt.org >");
+MODULE_DESCRIPTION(DRV_DESC);
+MODULE_VERSION(DRV_VERSION);
$(eval $(call KernelPackage,i2c-gpio))
-define KernelPackage/i2c-gpio-custom
- SUBMENU:=$(I2C_MENU)
- TITLE:=Custom GPIO-based I2C device
- DEPENDS:=@TARGET_adm5120 kmod-i2c-core +kmod-i2c-gpio
- KCONFIG:=CONFIG_I2C_GPIO_CUSTOM
- FILES:=$(LINUX_DIR)/drivers/i2c/busses/i2c-gpio-custom.$(LINUX_KMOD_SUFFIX)
- AUTOLOAD:=$(call AutoLoad,58,i2c-gpio-custom)
-endef
-
-define KernelPackage/i2c-gpio-custom/description
- Kernel module for register a custom i2c-gpio platform device.
-endef
-
-$(eval $(call KernelPackage,i2c-gpio-custom))
-
-
define KernelPackage/i2c-scx200
SUBMENU:=$(I2C_MENU)
TITLE:=Geode SCx200 I2C using GPIO pins
endef
define KernelPackage/i2c-scx200-acb/description
- Kernel module for I2C using the ACCESS.bus controllers on the Geode SCx200
+ Kernel module for I2C using the ACCESS.bus controllers on the Geode SCx200
and SC1100 processors and the CS5535 and CS5536 Geode companion devices.
endef
+++ /dev/null
-/*
- * Custom GPIO-based I2C driver
- *
- * Copyright (C) 2007 Gabor Juhos <juhosg at openwrt.org>
- *
- * 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.
- *
- * ---------------------------------------------------------------------------
- *
- * The behaviour of this driver can be altered by setting some parameters
- * from the insmod command line.
- *
- * The following parameters are adjustable:
- *
- * bus0 These four arguments can be arrays of
- * bus1 1-8 unsigned integers as follows:
- * bus2
- * bus3 <id>,<sda>,<scl>,<udelay>,<timeout>,<sda_od>,<scl_od>,<scl_oo>
- *
- * where:
- *
- * <id> ID to used as device_id for the corresponding bus (required)
- * <sda> GPIO pin ID to used for SDA (required)
- * <scl> GPIO pin ID to used for SCL (required)
- * <udelay> signal toggle delay.
- * <timeout> clock stretching timeout.
- * <sda_od> SDA is configured as open drain.
- * <scl_od> SCL is configured as open drain.
- * <scl_oo> SCL output drivers cannot be turned off.
- *
- * See include/i2c-gpio.h for more information about the parameters.
- *
- * If this driver is built into the kernel, you can use the following kernel
- * command line parameters, with the same values as the corresponding module
- * parameters listed above:
- *
- * i2c-gpio-custom.bus0
- * i2c-gpio-custom.bus1
- * i2c-gpio-custom.bus2
- * i2c-gpio-custom.bus3
- */
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/platform_device.h>
-
-#include <linux/i2c-gpio.h>
-
-#define DRV_NAME "i2c-gpio-custom"
-#define DRV_DESC "Custom GPIO-based I2C driver"
-#define DRV_VERSION "0.1.0"
-
-#define PFX DRV_NAME ": "
-
-#define BUS_PARAM_ID 0
-#define BUS_PARAM_SDA 1
-#define BUS_PARAM_SCL 2
-#define BUS_PARAM_UDELAY 3
-#define BUS_PARAM_TIMEOUT 4
-#define BUS_PARAM_SDA_OD 5
-#define BUS_PARAM_SCL_OD 6
-#define BUS_PARAM_SCL_OO 7
-
-#define BUS_PARAM_REQUIRED 3
-#define BUS_PARAM_COUNT 8
-#define BUS_COUNT_MAX 4
-
-static unsigned int bus0[BUS_PARAM_COUNT] __initdata;
-static unsigned int bus1[BUS_PARAM_COUNT] __initdata;
-static unsigned int bus2[BUS_PARAM_COUNT] __initdata;
-static unsigned int bus3[BUS_PARAM_COUNT] __initdata;
-
-static unsigned int bus_nump[BUS_COUNT_MAX] __initdata;
-
-#define BUS_PARM_DESC \
- " config -> id,sda,scl[,udelay,timeout,sda_od,scl_od,scl_oo]"
-
-module_param_array(bus0, uint, &bus_nump[0], 0);
-MODULE_PARM_DESC(bus0, "bus0" BUS_PARM_DESC);
-module_param_array(bus1, uint, &bus_nump[1], 0);
-MODULE_PARM_DESC(bus1, "bus1" BUS_PARM_DESC);
-module_param_array(bus2, uint, &bus_nump[2], 0);
-MODULE_PARM_DESC(bus2, "bus2" BUS_PARM_DESC);
-module_param_array(bus3, uint, &bus_nump[3], 0);
-MODULE_PARM_DESC(bus3, "bus3" BUS_PARM_DESC);
-
-static struct platform_device *devices[BUS_COUNT_MAX];
-static unsigned int nr_devices;
-
-static void i2c_gpio_custom_cleanup(void)
-{
- int i;
-
- for (i = 0; i < nr_devices; i++)
- if (devices[i])
- platform_device_unregister(devices[i]);
-}
-
-static int __init i2c_gpio_custom_add_one(unsigned int id, unsigned int *params)
-{
- struct platform_device *pdev;
- struct i2c_gpio_platform_data pdata;
- int err;
-
- if (!bus_nump[id])
- return 0;
-
- if (bus_nump[id] < BUS_PARAM_REQUIRED) {
- printk(KERN_ERR PFX "not enough parameters for bus%d\n", id);
- err = -EINVAL;
- goto err;
- }
-
- pdev = platform_device_alloc("i2c-gpio", params[BUS_PARAM_ID]);
- if (!pdev) {
- err = -ENOMEM;
- goto err;
- }
-
- devices[nr_devices++] = pdev;
-
- pdata.sda_pin = params[BUS_PARAM_SDA];
- pdata.scl_pin = params[BUS_PARAM_SCL];
- pdata.udelay = params[BUS_PARAM_UDELAY];
- pdata.timeout = params[BUS_PARAM_TIMEOUT];
- pdata.sda_is_open_drain = params[BUS_PARAM_SDA_OD] != 0;
- pdata.scl_is_open_drain = params[BUS_PARAM_SCL_OD] != 0;
- pdata.scl_is_output_only = params[BUS_PARAM_SCL_OO] != 0;
-
- err = platform_device_add_data(pdev, &pdata, sizeof(pdata));
- if (err)
- goto err;
-
- err = platform_device_register(pdev);
- if (err)
- goto err;
-
- return 0;
-
-err:
- return err;
-}
-
-static int __init i2c_gpio_custom_probe(void)
-{
- int err;
-
- printk(KERN_INFO DRV_DESC " version " DRV_VERSION "\n");
-
- err = i2c_gpio_custom_add_one(0, bus0);
- if (err) goto err;
-
- err = i2c_gpio_custom_add_one(1, bus1);
- if (err) goto err;
-
- err = i2c_gpio_custom_add_one(2, bus2);
- if (err) goto err;
-
- err = i2c_gpio_custom_add_one(3, bus3);
- if (err) goto err;
-
- if (!nr_devices) {
- printk(KERN_ERR PFX "no bus parameter(s) specified\n");
- err = -ENODEV;
- goto err;
- }
-
- return 0;
-
-err:
- i2c_gpio_custom_cleanup();
- return err;
-}
-
-#ifdef MODULE
-static int __init i2c_gpio_custom_init(void)
-{
- return i2c_gpio_custom_probe();
-}
-module_init(i2c_gpio_custom_init);
-
-static void __exit i2c_gpio_custom_exit(void)
-{
- i2c_gpio_custom_cleanup();
-}
-module_exit(i2c_gpio_custom_exit);
-#else
-subsys_initcall(i2c_gpio_custom_probe);
-#endif /* MODULE*/
-
-MODULE_LICENSE("GPL v2");
-MODULE_AUTHOR("Gabor Juhos <juhosg at openwrt.org >");
-MODULE_DESCRIPTION(DRV_DESC);
-MODULE_VERSION(DRV_VERSION);
+++ /dev/null
-Index: linux-2.6.24.2/drivers/i2c/busses/Kconfig
-===================================================================
---- linux-2.6.24.2.orig/drivers/i2c/busses/Kconfig
-+++ linux-2.6.24.2/drivers/i2c/busses/Kconfig
-@@ -146,6 +146,17 @@ config I2C_GPIO
- This is a very simple bitbanging I2C driver utilizing the
- arch-neutral GPIO API to control the SCL and SDA lines.
-
-+config I2C_GPIO_CUSTOM
-+ tristate "Custom GPIO-based I2C driver"
-+ depends on GENERIC_GPIO
-+ select I2C_GPIO
-+ help
-+ This is an I2C driver to register 1 to 4 custom I2C buses using
-+ GPIO lines.
-+
-+ This support is also available as a module. If so, the module
-+ will be called i2c-gpio-custom.
-+
- config I2C_HYDRA
- tristate "CHRP Apple Hydra Mac I/O I2C interface"
- depends on PCI && PPC_CHRP && EXPERIMENTAL
-Index: linux-2.6.24.2/drivers/i2c/busses/Makefile
-===================================================================
---- linux-2.6.24.2.orig/drivers/i2c/busses/Makefile
-+++ linux-2.6.24.2/drivers/i2c/busses/Makefile
-@@ -14,6 +14,7 @@ obj-$(CONFIG_I2C_BLACKFIN_TWI) += i2c-bf
- obj-$(CONFIG_I2C_DAVINCI) += i2c-davinci.o
- obj-$(CONFIG_I2C_ELEKTOR) += i2c-elektor.o
- obj-$(CONFIG_I2C_GPIO) += i2c-gpio.o
-+obj-$(CONFIG_I2C_GPIO_CUSTOM) += i2c-gpio-custom.o
- obj-$(CONFIG_I2C_HYDRA) += i2c-hydra.o
- obj-$(CONFIG_I2C_I801) += i2c-i801.o
- obj-$(CONFIG_I2C_I810) += i2c-i810.o
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