From cb26b572dc39467ba0969d1a76c2f723d2d6a2a6 Mon Sep 17 00:00:00 2001
From: David Brownell <david-b@pacbell.net>
Date: Fri, 5 Jan 2007 16:36:37 -0800
Subject: [PATCH] [PATCH] Update the rtc-rs5c372 driver

 Bugfixes:
  - Handle RTCs which are configured to use 12-hour mode.
  - Never report bogus/un-initialized times.
  - Displaying "raw trim" requires not masking it first!
  - Fix the sysfs and procfs display of crystal and trim data.

 Features:
  - Handle other RTCs in this family, notably rv5c386/rv5c387.
  - Declare the other registers.
  - Provide alarm get/set functionality.
  - Handle AIE and UIE; but no IRQ handling yet.

 Cleanup:
  - Shrink object by not including needless sysfs or procfs support
  - We don't need no steenkin' forward declarations.  (Except one.)

Until the I2C framework merges "new style" driver support, matching
the driver model better, using rv5c chips or alarm IRQs requires a
separate board-specific patch.  (And an IRQ handler, handing off labor
through a work_struct...)

This uses the "method 3" register reads, but notes that it's done
to work around an evident i2c adapter driver bug.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Acked-by: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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