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From: Daniel Mack <daniel@caiaq.de>
To: linux-kernel@vger.kernel.org
Cc: Daniel Mack <daniel@caiaq.de>,
	Anton Vorontsov <avorontsov@ru.mvista.com>,
	Matt Reimer <mreimer@vpop.net>,
	Evgeniy Polyakov <zbr@ioremap.net>, Tejun Heo <tj@kernel.org>,
	David Woodhouse <dwmw2@infradead.org>,
	Len Brown <len.brown@intel.com>,
	Mark Brown <broonie@opensource.wolfsonmicro.com>
Subject: [PATCH 3/3] power/ds2760_battery: use factor of 20 for rated_capacity
Date: Tue, 11 May 2010 18:38:46 +0200	[thread overview]
Message-ID: <1273595926-26249-3-git-send-email-daniel@caiaq.de> (raw)
In-Reply-To: <1273595926-26249-1-git-send-email-daniel@caiaq.de>

In the ds2760 driver, the currently used factor of 10 to store the rated
battery capacity internally is not sufficient for batteries > 2.55 Ah,
as the 8-bit register will overflow for bigger values.

Change the factor to 20 to broaden that range. Note that due to
RATED_CAPACITY_FACTOR, the external interface won't change, neither for
the writeable sysfs entires nor for the kernel rated_capacity module
parameter.

Signed-off-by: Daniel Mack <daniel@caiaq.de>
Cc: Anton Vorontsov <avorontsov@ru.mvista.com>
Cc: Matt Reimer <mreimer@vpop.net>
Cc: Evgeniy Polyakov <zbr@ioremap.net>
Cc: Tejun Heo <tj@kernel.org>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Len Brown <len.brown@intel.com>
Cc: Mark Brown <broonie@opensource.wolfsonmicro.com>
---
 drivers/power/ds2760_battery.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/power/ds2760_battery.c b/drivers/power/ds2760_battery.c
index b82bf92..7b3043f 100644
--- a/drivers/power/ds2760_battery.c
+++ b/drivers/power/ds2760_battery.c
@@ -78,7 +78,7 @@ MODULE_PARM_DESC(current_accum, "current accumulator value");
 
 /* Some batteries have their rated capacity stored a N * 10 mAh, while
  * others use an index into this table. */
-#define RATED_CAPACITY_FACTOR 10
+#define RATED_CAPACITY_FACTOR 20
 static int rated_capacities[] = {
 	0,
 	920,	/* Samsung */
-- 
1.7.1


  parent reply	other threads:[~2010-05-11 16:39 UTC|newest]

Thread overview: 33+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-05-11 16:38 [PATCH 1/3] pda_power: add support for writeable properties Daniel Mack
2010-05-11 16:38 ` [PATCH 2/3] power/ds2760_battery: make charge_now and charge_full writeable Daniel Mack
2010-05-11 16:44   ` Daniel Mack
2010-05-11 17:20   ` Anton Vorontsov
2010-05-11 17:28     ` Daniel Mack
2010-05-11 18:05       ` Anton Vorontsov
2010-05-18 18:24         ` Daniel Mack
2010-05-11 16:38 ` Daniel Mack [this message]
2010-05-11 17:19   ` [PATCH 3/3] power/ds2760_battery: use factor of 20 for rated_capacity Anton Vorontsov
2010-05-11 17:25     ` Daniel Mack
2010-05-11 17:47       ` Anton Vorontsov
2010-05-11 17:47 ` [PATCH 1/3] pda_power: add support for writeable properties Anton Vorontsov
2010-05-11 17:58   ` Daniel Mack
2010-05-11 18:23     ` Anton Vorontsov
2010-05-11 22:28       ` Daniel Mack
2010-05-12 18:15         ` [PATCH] Introduce {sysfs,device}_create_file_mode Anton Vorontsov
2010-05-12 18:18           ` Daniel Mack
2010-05-12 18:38           ` Greg KH
2010-05-12 19:08             ` Anton Vorontsov
2010-05-12 19:12               ` Kay Sievers
2010-05-12 19:19                 ` Greg KH
2010-05-12 19:39                   ` Anton Vorontsov
2010-05-12 19:30                 ` Anton Vorontsov
2010-05-13  9:33                   ` Daniel Mack
2010-05-17 19:40                     ` [PATCH] power_supply: Use attribute groups Anton Vorontsov
2010-05-18 17:35                       ` Daniel Mack
2010-05-18 19:49                       ` [PATCH 1/3] " Daniel Mack
2010-05-18 19:49                       ` [PATCH 2/3] pda_power: add support for writeable properties Daniel Mack
2010-05-18 19:56                         ` Greg KH
2010-05-18 20:30                           ` [PATCH] power/ds2760_battery: document ABI change Daniel Mack
2010-05-19  8:34                             ` Anton Vorontsov
2010-05-18 19:49                       ` [PATCH 3/3] power/ds2760_battery: make charge_now and charge_full writeable Daniel Mack
2010-05-11 18:32     ` [PATCH 1/3] pda_power: add support for writeable properties Anton Vorontsov

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