From: Eduardo Valentin Date: Fri, 15 Mar 2013 13:00:30 +0000 (-0400) Subject: staging: omap-thermal: document omap_bandgap_tshut_init function X-Git-Tag: firefly_0821_release~3680^2~674^2~603 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=d3790b3ddcccd2c62cb83aae33a36d3cb028506d;p=firefly-linux-kernel-4.4.55.git staging: omap-thermal: document omap_bandgap_tshut_init function Add documentation for the function to setup TSHUT handling Signed-off-by: Eduardo Valentin Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/staging/omap-thermal/omap-bandgap.c b/drivers/staging/omap-thermal/omap-bandgap.c index aa90539f20ca..f2ebbcf4facd 100644 --- a/drivers/staging/omap-thermal/omap-bandgap.c +++ b/drivers/staging/omap-thermal/omap-bandgap.c @@ -798,6 +798,18 @@ static int omap_bandgap_set_continuous_mode(struct omap_bandgap *bg_ptr) return 0; } +/** + * omap_bandgap_tshut_init() - setup and initialize tshut handling + * @bg_ptr: pointer to struct omap_bandgap + * @pdev: pointer to device struct platform_device + * + * Call this function only in case the bandgap features HAS(TSHUT). + * In this case, the driver needs to handle the TSHUT signal as an IRQ. + * The IRQ is wired as a GPIO, and for this purpose, it is required + * to specify which GPIO line is used. TSHUT IRQ is fired anytime + * one of the bandgap sensors violates the TSHUT high/hot threshold. + * And in that case, the system must go off. + */ static int omap_bandgap_tshut_init(struct omap_bandgap *bg_ptr, struct platform_device *pdev) {