From patchwork Thu Jun 16 04:05:17 2011
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Subject: [v3] Add support for RTC device: pt7c4338 in rtc-ds1307.c
Date: Wed, 15 Jun 2011 18:05:17 -0000
From: Priyanka Jain <Priyanka.Jain@freescale.com>
X-Patchwork-Id: 100586
Message-Id: <1308197117-3586-1-git-send-email-Priyanka.Jain@freescale.com>
To: <akpm@linux-foundation.org>, <w.sang@pengutronix.de>,
 <cbouatmailru@gmail.com>, <a.zummo@towertech.it>,
 <benh@kernel.crashing.org>, 
 <galak@gate.crashing.org>, <grant.likely@secretlab.ca>,
 <b04825@freescale.com>, <linuxppc-dev@lists.ozlabs.org>,
 <rtc-linux@googlegroups.com>, <p_gortmaker@yahoo.com>
Cc: Priyanka Jain <Priyanka.Jain@freescale.com>

PT7C4338 chip is being manufactured by Pericom Technology Inc.
It is a serial real-time clock which provides:
1)Low-power clock/calendar.
2)Programmable square-wave output.
It has 56 bytes of nonvolatile RAM.
Its register set is same as that of rtc device: DS1307.


Signed-off-by: Priyanka Jain <Priyanka.Jain@freescale.com>
Acked-by: Timur Tabi <timur@freescale.com>
Reviewed-by: Wolfram Sang <w.sang@pengutronix.de>

---
Change for v3:
	 Incorporting Timur Tabi's comments to drop Kconfig and copyright
         changes 

 Change for v2:
	 Incorporting Andrew Morton's comments to shorten patch by using
         hunk: { "pt7c4338", ds_1307 }

 Changes :
	 This patch will supersede patch:
		"RTC driver(Linux) for PT7C4338 chip"
	 Incorporting Wolfram Sang's comments to reuse ds1307 driver.

 drivers/rtc/rtc-ds1307.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/drivers/rtc/rtc-ds1307.c b/drivers/rtc/rtc-ds1307.c
index 4724ba3..b2005b4 100644
--- a/drivers/rtc/rtc-ds1307.c
+++ b/drivers/rtc/rtc-ds1307.c
@@ -149,6 +149,7 @@ static const struct i2c_device_id ds1307_id[] = {
 	{ "ds1340", ds_1340 },
 	{ "ds3231", ds_3231 },
 	{ "m41t00", m41t00 },
+	{ "pt7c4338", ds_1307 },
 	{ "rx8025", rx_8025 },
 	{ }
 };