From 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 Mon Sep 17 00:00:00 2001 From: Yunhong Jiang Date: Tue, 4 Aug 2015 12:17:53 -0700 Subject: Add the rt linux 4.1.3-rt3 as base Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang --- kernel/drivers/w1/slaves/w1_bq27000.c | 117 ++++++++++++++++++++++++++++++++++ 1 file changed, 117 insertions(+) create mode 100644 kernel/drivers/w1/slaves/w1_bq27000.c (limited to 'kernel/drivers/w1/slaves/w1_bq27000.c') diff --git a/kernel/drivers/w1/slaves/w1_bq27000.c b/kernel/drivers/w1/slaves/w1_bq27000.c new file mode 100644 index 000000000..caafb1722 --- /dev/null +++ b/kernel/drivers/w1/slaves/w1_bq27000.c @@ -0,0 +1,117 @@ +/* + * drivers/w1/slaves/w1_bq27000.c + * + * Copyright (C) 2007 Texas Instruments, Inc. + * + * This file is licensed under the terms of the GNU General Public License + * version 2. This program is licensed "as is" without any warranty of any + * kind, whether express or implied. + * + */ + +#include +#include +#include +#include +#include +#include +#include + +#include "../w1.h" +#include "../w1_int.h" +#include "../w1_family.h" + +#define HDQ_CMD_READ (0) +#define HDQ_CMD_WRITE (1<<7) + +static int F_ID; + +static int w1_bq27000_read(struct device *dev, unsigned int reg) +{ + u8 val; + struct w1_slave *sl = container_of(dev->parent, struct w1_slave, dev); + + mutex_lock(&sl->master->bus_mutex); + w1_write_8(sl->master, HDQ_CMD_READ | reg); + val = w1_read_8(sl->master); + mutex_unlock(&sl->master->bus_mutex); + + return val; +} + +static struct bq27000_platform_data bq27000_battery_info = { + .read = w1_bq27000_read, + .name = "bq27000-battery", +}; + +static int w1_bq27000_add_slave(struct w1_slave *sl) +{ + int ret; + struct platform_device *pdev; + + pdev = platform_device_alloc("bq27000-battery", -1); + if (!pdev) { + ret = -ENOMEM; + return ret; + } + ret = platform_device_add_data(pdev, + &bq27000_battery_info, + sizeof(bq27000_battery_info)); + if (ret) + goto pdev_add_failed; + pdev->dev.parent = &sl->dev; + + ret = platform_device_add(pdev); + if (ret) + goto pdev_add_failed; + + dev_set_drvdata(&sl->dev, pdev); + + goto success; + +pdev_add_failed: + platform_device_put(pdev); +success: + return ret; +} + +static void w1_bq27000_remove_slave(struct w1_slave *sl) +{ + struct platform_device *pdev = dev_get_drvdata(&sl->dev); + + platform_device_unregister(pdev); +} + +static struct w1_family_ops w1_bq27000_fops = { + .add_slave = w1_bq27000_add_slave, + .remove_slave = w1_bq27000_remove_slave, +}; + +static struct w1_family w1_bq27000_family = { + .fid = W1_FAMILY_BQ27000, + .fops = &w1_bq27000_fops, +}; + +static int __init w1_bq27000_init(void) +{ + if (F_ID) + w1_bq27000_family.fid = F_ID; + + return w1_register_family(&w1_bq27000_family); +} + +static void __exit w1_bq27000_exit(void) +{ + w1_unregister_family(&w1_bq27000_family); +} + + +module_init(w1_bq27000_init); +module_exit(w1_bq27000_exit); + +module_param(F_ID, int, S_IRUSR); +MODULE_PARM_DESC(F_ID, "1-wire slave FID for BQ device"); +MODULE_ALIAS("w1-family-" __stringify(W1_FAMILY_BQ27000)); +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Texas Instruments Ltd"); +MODULE_DESCRIPTION("HDQ/1-wire slave driver bq27000 battery monitor chip"); -- cgit 1.2.3-korg