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| author | Hans de Goede <j.w.r.degoede@hhs.nl> | 2006-08-28 14:42:24 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2006-09-28 15:31:14 -0700 |
| commit | 360b9ab220aedaf346380fc2344729d9acc3b075 (patch) | |
| tree | ad843d0f33fe396c6d0ae22e93b151a5386de40c /drivers/hwmon/abituguru.c | |
| parent | b17ebc9402040959690b5a2c4e1cfb1e6d4fb206 (diff) | |
| download | kernel_samsung_smdk4412-360b9ab220aedaf346380fc2344729d9acc3b075.zip kernel_samsung_smdk4412-360b9ab220aedaf346380fc2344729d9acc3b075.tar.gz kernel_samsung_smdk4412-360b9ab220aedaf346380fc2344729d9acc3b075.tar.bz2 | |
abituguru: Add suspend/resume support
This patch contains rudimentary suspend / resume support for the uguru,
this protects the uguru and the driver against suspend / resume cycles,
so there is no reason to unload the driver in your suspend / resume
scripts.
Only include suspend / resume functions when CONFIG_PM is set.
Signed-off-by: Hans de Goede <j.w.r.degoede@hhs.nl>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/hwmon/abituguru.c')
| -rw-r--r-- | drivers/hwmon/abituguru.c | 30 |
1 files changed, 28 insertions, 2 deletions
diff --git a/drivers/hwmon/abituguru.c b/drivers/hwmon/abituguru.c index 35ad1b0..e5cb0fd 100644 --- a/drivers/hwmon/abituguru.c +++ b/drivers/hwmon/abituguru.c @@ -1354,13 +1354,39 @@ LEAVE_UPDATE: return NULL; } +#ifdef CONFIG_PM +static int abituguru_suspend(struct platform_device *pdev, pm_message_t state) +{ + struct abituguru_data *data = platform_get_drvdata(pdev); + /* make sure all communications with the uguru are done and no new + ones are started */ + mutex_lock(&data->update_lock); + return 0; +} + +static int abituguru_resume(struct platform_device *pdev) +{ + struct abituguru_data *data = platform_get_drvdata(pdev); + /* See if the uGuru is still ready */ + if (inb_p(data->addr + ABIT_UGURU_DATA) != ABIT_UGURU_STATUS_INPUT) + data->uguru_ready = 0; + mutex_unlock(&data->update_lock); + return 0; +} +#else +#define abituguru_suspend NULL +#define abituguru_resume NULL +#endif /* CONFIG_PM */ + static struct platform_driver abituguru_driver = { .driver = { .owner = THIS_MODULE, .name = ABIT_UGURU_NAME, }, - .probe = abituguru_probe, - .remove = __devexit_p(abituguru_remove), + .probe = abituguru_probe, + .remove = __devexit_p(abituguru_remove), + .suspend = abituguru_suspend, + .resume = abituguru_resume, }; static int __init abituguru_detect(void) |