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author | 2015-08-04 12:17:53 -0700 | |
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committer | 2015-08-04 15:44:42 -0700 | |
commit | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch) | |
tree | 1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/drivers/mfd/abx500-core.c | |
parent | 98260f3884f4a202f9ca5eabed40b1354c489b29 (diff) |
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 <bigeasy@linutronix.de>
Date: Sat Jul 25 12:13:34 2015 +0200
Prepare v4.1.3-rt3
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
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 <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/drivers/mfd/abx500-core.c')
-rw-r--r-- | kernel/drivers/mfd/abx500-core.c | 156 |
1 files changed, 156 insertions, 0 deletions
diff --git a/kernel/drivers/mfd/abx500-core.c b/kernel/drivers/mfd/abx500-core.c new file mode 100644 index 000000000..fe4189951 --- /dev/null +++ b/kernel/drivers/mfd/abx500-core.c @@ -0,0 +1,156 @@ +/* + * Copyright (C) 2007-2010 ST-Ericsson + * License terms: GNU General Public License (GPL) version 2 + * Register access functions for the ABX500 Mixed Signal IC family. + * Author: Mattias Wallin <mattias.wallin@stericsson.com> + */ + +#include <linux/list.h> +#include <linux/slab.h> +#include <linux/err.h> +#include <linux/module.h> +#include <linux/mfd/abx500.h> + +static LIST_HEAD(abx500_list); + +struct abx500_device_entry { + struct list_head list; + struct abx500_ops ops; + struct device *dev; +}; + +static void lookup_ops(struct device *dev, struct abx500_ops **ops) +{ + struct abx500_device_entry *dev_entry; + + *ops = NULL; + list_for_each_entry(dev_entry, &abx500_list, list) { + if (dev_entry->dev == dev) { + *ops = &dev_entry->ops; + return; + } + } +} + +int abx500_register_ops(struct device *dev, struct abx500_ops *ops) +{ + struct abx500_device_entry *dev_entry; + + dev_entry = devm_kzalloc(dev, + sizeof(struct abx500_device_entry), + GFP_KERNEL); + if (!dev_entry) { + dev_err(dev, "register_ops kzalloc failed"); + return -ENOMEM; + } + dev_entry->dev = dev; + memcpy(&dev_entry->ops, ops, sizeof(struct abx500_ops)); + + list_add_tail(&dev_entry->list, &abx500_list); + return 0; +} +EXPORT_SYMBOL(abx500_register_ops); + +void abx500_remove_ops(struct device *dev) +{ + struct abx500_device_entry *dev_entry, *tmp; + + list_for_each_entry_safe(dev_entry, tmp, &abx500_list, list) + if (dev_entry->dev == dev) + list_del(&dev_entry->list); +} +EXPORT_SYMBOL(abx500_remove_ops); + +int abx500_set_register_interruptible(struct device *dev, u8 bank, u8 reg, + u8 value) +{ + struct abx500_ops *ops; + + lookup_ops(dev->parent, &ops); + if ((ops != NULL) && (ops->set_register != NULL)) + return ops->set_register(dev, bank, reg, value); + else + return -ENOTSUPP; +} +EXPORT_SYMBOL(abx500_set_register_interruptible); + +int abx500_get_register_interruptible(struct device *dev, u8 bank, u8 reg, + u8 *value) +{ + struct abx500_ops *ops; + + lookup_ops(dev->parent, &ops); + if ((ops != NULL) && (ops->get_register != NULL)) + return ops->get_register(dev, bank, reg, value); + else + return -ENOTSUPP; +} +EXPORT_SYMBOL(abx500_get_register_interruptible); + +int abx500_get_register_page_interruptible(struct device *dev, u8 bank, + u8 first_reg, u8 *regvals, u8 numregs) +{ + struct abx500_ops *ops; + + lookup_ops(dev->parent, &ops); + if ((ops != NULL) && (ops->get_register_page != NULL)) + return ops->get_register_page(dev, bank, + first_reg, regvals, numregs); + else + return -ENOTSUPP; +} +EXPORT_SYMBOL(abx500_get_register_page_interruptible); + +int abx500_mask_and_set_register_interruptible(struct device *dev, u8 bank, + u8 reg, u8 bitmask, u8 bitvalues) +{ + struct abx500_ops *ops; + + lookup_ops(dev->parent, &ops); + if ((ops != NULL) && (ops->mask_and_set_register != NULL)) + return ops->mask_and_set_register(dev, bank, + reg, bitmask, bitvalues); + else + return -ENOTSUPP; +} +EXPORT_SYMBOL(abx500_mask_and_set_register_interruptible); + +int abx500_get_chip_id(struct device *dev) +{ + struct abx500_ops *ops; + + lookup_ops(dev->parent, &ops); + if ((ops != NULL) && (ops->get_chip_id != NULL)) + return ops->get_chip_id(dev); + else + return -ENOTSUPP; +} +EXPORT_SYMBOL(abx500_get_chip_id); + +int abx500_event_registers_startup_state_get(struct device *dev, u8 *event) +{ + struct abx500_ops *ops; + + lookup_ops(dev->parent, &ops); + if ((ops != NULL) && (ops->event_registers_startup_state_get != NULL)) + return ops->event_registers_startup_state_get(dev, event); + else + return -ENOTSUPP; +} +EXPORT_SYMBOL(abx500_event_registers_startup_state_get); + +int abx500_startup_irq_enabled(struct device *dev, unsigned int irq) +{ + struct abx500_ops *ops; + + lookup_ops(dev->parent, &ops); + if ((ops != NULL) && (ops->startup_irq_enabled != NULL)) + return ops->startup_irq_enabled(dev, irq); + else + return -ENOTSUPP; +} +EXPORT_SYMBOL(abx500_startup_irq_enabled); + +MODULE_AUTHOR("Mattias Wallin <mattias.wallin@stericsson.com>"); +MODULE_DESCRIPTION("ABX500 core driver"); +MODULE_LICENSE("GPL"); |