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staging: omap-thermal: document omap_bandgap_update_alert_threshold function 

Document function to program alert thresholds

Signed-off-by: Eduardo Valentin <eduardo.valentin@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
hifive-unleashed-5.1
Eduardo Valentin 2013-03-15 09:00:27 -04:00 committed by Greg Kroah-Hartman
parent 31102a7202
commit 38d99e807b
1 changed files with 14 additions and 0 deletions
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14
drivers/staging/omap-thermal/omap-bandgap.c
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@ -370,6 +370,20 @@ static void omap_bandgap_unmask_interrupts(struct omap_bandgap *bg_ptr, int id,
omap_bandgap_writel(bg_ptr, reg_val, tsr->bgap_mask_ctrl);
}
/**
* omap_bandgap_update_alert_threshold() - sequence to update thresholds
* @bg_ptr: struct omap_bandgap pointer
* @id: bandgap sensor id
* @val: value (ADC) of a new threshold
* @hot: desired threshold to be updated. true if threshold hot, false if
* threshold cold
*
* It will program the required thresholds (hot and cold) for TALERT signal.
* This function can be used to update t_hot or t_cold, depending on @hot value.
* It checks the resulting t_hot and t_cold values, based on the new passed @val
* and configures the thresholds so that t_hot is always greater than t_cold.
* Call this function only if bandgap features HAS(TALERT).
*/
static
int omap_bandgap_update_alert_threshold(struct omap_bandgap *bg_ptr, int id,
int val, bool hot)