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Viewing changes to drivers/mfd/ab8500-sysctrl.c

  • Committer: Bazaar Package Importer
  • Author(s): John Rigby, Upstream Fixes, Andy Green, John Rigby
  • Date: 2011-04-14 12:16:06 UTC
  • Revision ID: james.westby@ubuntu.com-20110414121606-b77podkyqgr2oix7
Tags: 2.6.38-1002.3
https://launchpad.net/bugs/745737
https://launchpad.net/bugs/747639
https://launchpad.net/bugs/752900
https://launchpad.net/bugs/745737
https://launchpad.net/bugs/732842
https://launchpad.net/bugs/732912
[ Upstream Fixes ]

* MUSB: shutdown: Make sure block is awake before doing shutdown
  - LP: #745737
* Fixed gpio polarity of gpio USB-phy reset.
  - LP: #747639

[ Andy Green ]

* LINARO: SAUCE: disable CONFIG_OMAP_RESET_CLOCKS
  - LP: #752900

[ John Rigby ]

* Rebase to new upstreams:
  Linux v2.6.38.1
  linaro-linux-2.6.38-upstream-29Mar2011
  Ubuntu-2.6.38-7.35
* SAUCE: OMAP4: clock: wait for module to become accessible on
  a clk enable
  - LP: #745737
* Rebase to new upstreams:
  Linux v2.6.38.2
  linaro-linux-2.6.38-upstream-5Apr2011
  Ubuntu-2.6.38-8.41
  - LP: #732842
* Update configs for device tree, dvfs and lttng
* LINARO: add building of dtb's
* LINARO: SAUCE: Disable lowest operating freqs on omap34xx
  - LP: #732912

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Lines of Context:
drivers/mfd/ab8500-sysctrl.c
 
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/*
 
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 * Copyright (C) ST-Ericsson SA 2010
 
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 * Author: Mattias Nilsson <mattias.i.nilsson@stericsson.com> for ST Ericsson.
 
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 * License terms: GNU General Public License (GPL) version 2
 
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 */
 
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#include <linux/err.h>
 
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#include <linux/platform_device.h>
 
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#include <linux/mfd/ab8500.h>
 
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#include <linux/mfd/abx500.h>
 
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#include <linux/mfd/ab8500/sysctrl.h>
 
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static struct device *sysctrl_dev;
 
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static inline bool valid_bank(u8 bank)
 
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{
 
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        return ((bank == AB8500_SYS_CTRL1_BLOCK) ||
 
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                (bank == AB8500_SYS_CTRL2_BLOCK));
 
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}
 
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int ab8500_sysctrl_read(u16 reg, u8 *value)
 
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{
 
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        u8 bank;
 
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        if (sysctrl_dev == NULL)
 
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                return -EAGAIN;
 
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        bank = (reg >> 8);
 
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        if (!valid_bank(bank))
 
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                return -EINVAL;
 
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        return abx500_get_register_interruptible(sysctrl_dev, bank,
 
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                (u8)(reg & 0xFF), value);
 
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}
 
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int ab8500_sysctrl_write(u16 reg, u8 mask, u8 value)
 
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{
 
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        u8 bank;
 
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        if (sysctrl_dev == NULL)
 
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                return -EAGAIN;
 
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        bank = (reg >> 8);
 
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        if (!valid_bank(bank))
 
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                return -EINVAL;
 
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        return abx500_mask_and_set_register_interruptible(sysctrl_dev, bank,
 
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                (u8)(reg & 0xFF), mask, value);
 
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}
 
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static int __devinit ab8500_sysctrl_probe(struct platform_device *pdev)
 
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{
 
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        sysctrl_dev = &pdev->dev;
 
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        return 0;
 
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}
 
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static int __devexit ab8500_sysctrl_remove(struct platform_device *pdev)
 
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{
 
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        sysctrl_dev = NULL;
 
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        return 0;
 
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}
 
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static struct platform_driver ab8500_sysctrl_driver = {
 
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        .driver = {
 
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                .name = "ab8500-sysctrl",
 
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                .owner = THIS_MODULE,
 
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        },
 
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        .probe = ab8500_sysctrl_probe,
 
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        .remove = __devexit_p(ab8500_sysctrl_remove),
 
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};
 
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static int __init ab8500_sysctrl_init(void)
 
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{
 
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        return platform_driver_register(&ab8500_sysctrl_driver);
 
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}
 
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subsys_initcall(ab8500_sysctrl_init);
 
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MODULE_AUTHOR("Mattias Nilsson <mattias.i.nilsson@stericsson.com");
 
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MODULE_DESCRIPTION("AB8500 system control driver");
 
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MODULE_LICENSE("GPL v2");