linux-kernel - [PATCH 11/50] staging: omap-thermal: add documentation for omap_bandgap_read

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Date:	Fri, 15 Mar 2013 08:59:59 -0400
From:	Eduardo Valentin <eduardo.valentin@...com>
To:	<gregkh@...uxfoundation.org>
CC:	<devel@...verdev.osuosl.org>, <linux-omap@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, <linux-pm@...r.kernel.org>,
	Eduardo Valentin <eduardo.valentin@...com>
Subject: [PATCH 11/50] staging: omap-thermal: add documentation for omap_bandgap_read_temp

Document function which reads temperature register, depending on
bandgap device version.

Signed-off-by: Eduardo Valentin <eduardo.valentin@...com>
---
 drivers/staging/omap-thermal/omap-bandgap.c |   10 ++++++++++
 1 files changed, 10 insertions(+), 0 deletions(-)

diff --git a/drivers/staging/omap-thermal/omap-bandgap.c b/drivers/staging/omap-thermal/omap-bandgap.c
index 62a5fb9..02817b5 100644
--- a/drivers/staging/omap-thermal/omap-bandgap.c
+++ b/drivers/staging/omap-thermal/omap-bandgap.c
@@ -109,6 +109,16 @@ exit:
 	return 0;
 }
 
+/**
+ * omap_bandgap_read_temp() - helper function to read sensor temperature
+ * @bg_ptr: pointer to omap_bandgap structure
+ * @id: bandgap sensor id
+ *
+ * Function to concentrate the steps to read sensor temperature register.
+ * This function is desired because, depending on bandgap device version,
+ * it might be needed to freeze the bandgap state machine, before fetching
+ * the register value.
+ */
 static u32 omap_bandgap_read_temp(struct omap_bandgap *bg_ptr, int id)
 {
 	struct temp_sensor_registers *tsr;
-- 
1.7.7.1.488.ge8e1c

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