diff options
Diffstat (limited to 'drivers/staging/tidspbridge/include/dspbridge/pwr.h')
| -rw-r--r-- | drivers/staging/tidspbridge/include/dspbridge/pwr.h | 107 |
1 files changed, 107 insertions, 0 deletions
diff --git a/drivers/staging/tidspbridge/include/dspbridge/pwr.h b/drivers/staging/tidspbridge/include/dspbridge/pwr.h new file mode 100644 index 000000000000..a6dc783904ef --- /dev/null +++ b/drivers/staging/tidspbridge/include/dspbridge/pwr.h @@ -0,0 +1,107 @@ +/* + * pwr.h + * + * DSP-BIOS Bridge driver support functions for TI OMAP processors. + * + * Copyright (C) 2005-2006 Texas Instruments, Inc. + * + * This package 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. + * + * THIS PACKAGE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED + * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. + */ + +#ifndef PWR_ +#define PWR_ + +#include <dspbridge/dbdefs.h> +#include <dspbridge/pwr_sh.h> + +/* + * ======== pwr_sleep_dsp ======== + * Signal the DSP to go to sleep. + * + * Parameters: + * sleep_code: New sleep state for DSP. (Initially, valid codes + * are PWR_DEEPSLEEP or PWR_EMERGENCYDEEPSLEEP; both of + * these codes will simply put the DSP in deep sleep.) + * + * timeout: Maximum time (msec) that PWR should wait for + * confirmation that the DSP sleep state has been + * reached. If PWR should simply send the command to + * the DSP to go to sleep and then return (i.e., + * asynchrounous sleep), the timeout should be + * specified as zero. + * + * Returns: + * 0: Success. + * 0: Success, but the DSP was already asleep. + * -EINVAL: The specified sleep_code is not supported. + * -ETIME: A timeout occured while waiting for DSP sleep + * confirmation. + * -EPERM: General failure, unable to send sleep command to + * the DSP. + */ +extern int pwr_sleep_dsp(const u32 sleep_code, const u32 timeout); + +/* + * ======== pwr_wake_dsp ======== + * Signal the DSP to wake from sleep. + * + * Parameters: + * timeout: Maximum time (msec) that PWR should wait for + * confirmation that the DSP is awake. If PWR should + * simply send a command to the DSP to wake and then + * return (i.e., asynchrounous wake), timeout should + * be specified as zero. + * + * Returns: + * 0: Success. + * 0: Success, but the DSP was already awake. + * -ETIME: A timeout occured while waiting for wake + * confirmation. + * -EPERM: General failure, unable to send wake command to + * the DSP. + */ +extern int pwr_wake_dsp(const u32 timeout); + +/* + * ======== pwr_pm_pre_scale ======== + * Prescale notification to DSP. + * + * Parameters: + * voltage_domain: The voltage domain for which notification is sent + * level: The level of voltage domain + * + * Returns: + * 0: Success. + * 0: Success, but the DSP was already awake. + * -ETIME: A timeout occured while waiting for wake + * confirmation. + * -EPERM: General failure, unable to send wake command to + * the DSP. + */ +extern int pwr_pm_pre_scale(u16 voltage_domain, u32 level); + +/* + * ======== pwr_pm_post_scale ======== + * PostScale notification to DSP. + * + * Parameters: + * voltage_domain: The voltage domain for which notification is sent + * level: The level of voltage domain + * + * Returns: + * 0: Success. + * 0: Success, but the DSP was already awake. + * -ETIME: A timeout occured while waiting for wake + * confirmation. + * -EPERM: General failure, unable to send wake command to + * the DSP. + */ +extern int pwr_pm_post_scale(u16 voltage_domain, u32 level); + +#endif /* PWR_ */ |