diff options
Diffstat (limited to 'package/kernel/w1-gpio-custom/src/w1-gpio-custom.c')
| -rw-r--r-- | package/kernel/w1-gpio-custom/src/w1-gpio-custom.c | 190 |
1 files changed, 0 insertions, 190 deletions
diff --git a/package/kernel/w1-gpio-custom/src/w1-gpio-custom.c b/package/kernel/w1-gpio-custom/src/w1-gpio-custom.c deleted file mode 100644 index 6928769975..0000000000 --- a/package/kernel/w1-gpio-custom/src/w1-gpio-custom.c +++ /dev/null @@ -1,190 +0,0 @@ -/* - * Custom GPIO-based W1 driver - * - * Copyright (C) 2007 Gabor Juhos <juhosg at openwrt.org> - * Copyright (C) 2008 Bifferos <bifferos at yahoo.co.uk> - * - * 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 must be arrays of - * bus1 3 unsigned integers as follows: - * bus2 - * bus3 <id>,<pin>,<od> - * - * where: - * - * <id> ID to used as device_id for the corresponding bus (required) - * <sda> GPIO pin ID of data pin (required) - * <od> Pin is configured as open drain. - * - * See include/w1-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: - * - * w1-gpio-custom.bus0 - * w1-gpio-custom.bus1 - * w1-gpio-custom.bus2 - * w1-gpio-custom.bus3 - */ - -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/init.h> -#include <linux/platform_device.h> - -#include <linux/w1-gpio.h> - -#define DRV_NAME "w1-gpio-custom" -#define DRV_DESC "Custom GPIO-based W1 driver" -#define DRV_VERSION "0.1.2" - -#define PFX DRV_NAME ": " - -#define BUS_PARAM_ID 0 -#define BUS_PARAM_PIN 1 -#define BUS_PARAM_OD 2 - -#define BUS_PARAM_REQUIRED 3 -#define BUS_PARAM_COUNT 3 -#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,pin,od" - -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 w1_gpio_custom_cleanup(void) -{ - int i; - - for (i = 0; i < nr_devices; i++) - if (devices[i]) - platform_device_unregister(devices[i]); -} - -static int __init w1_gpio_custom_add_one(unsigned int id, unsigned int *params) -{ - struct platform_device *pdev; - struct w1_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("w1-gpio", params[BUS_PARAM_ID]); - if (!pdev) { - err = -ENOMEM; - goto err; - } - - pdata.pin = params[BUS_PARAM_PIN]; - pdata.is_open_drain = params[BUS_PARAM_OD] ? 1 : 0; - pdata.enable_external_pullup = NULL; - pdata.ext_pullup_enable_pin = -EINVAL; - - err = platform_device_add_data(pdev, &pdata, sizeof(pdata)); - if (err) - goto err_put; - - err = platform_device_add(pdev); - if (err) - goto err_put; - - devices[nr_devices++] = pdev; - return 0; - - err_put: - platform_device_put(pdev); - err: - return err; -} - -static int __init w1_gpio_custom_probe(void) -{ - int err; - - nr_devices = 0; - printk(KERN_INFO DRV_DESC " version " DRV_VERSION "\n"); - - err = w1_gpio_custom_add_one(0, bus0); - if (err) - goto err; - - err = w1_gpio_custom_add_one(1, bus1); - if (err) - goto err; - - err = w1_gpio_custom_add_one(2, bus2); - if (err) - goto err; - - err = w1_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: - w1_gpio_custom_cleanup(); - return err; -} - -#ifdef MODULE -static int __init w1_gpio_custom_init(void) -{ - return w1_gpio_custom_probe(); -} -module_init(w1_gpio_custom_init); - -static void __exit w1_gpio_custom_exit(void) -{ - w1_gpio_custom_cleanup(); -} -module_exit(w1_gpio_custom_exit); -#else -subsys_initcall(w1_gpio_custom_probe); -#endif /* MODULE*/ - -MODULE_LICENSE("GPL v2"); -MODULE_AUTHOR("Bifferos <bifferos at yahoo.co.uk >"); -MODULE_DESCRIPTION(DRV_DESC); -MODULE_VERSION(DRV_VERSION); |