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regulator: tps6507x: allow driver to use DEFDCDC{2,3}_HIGH register

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Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

In TPS6507x, depending on the status of DEFDCDC{2,3} pin either
DEFDCDC{2,3}_LOW or DEFDCDC{2,3}_HIGH register needs to be read or
programmed to change the output voltage.

The current driver assumes DEFDCDC{2,3} pins are always tied low
and thus operates only on DEFDCDC{2,3}_LOW register. This need
not always be the case (as is found on OMAP-L138 EVM).

Unfortunately, software cannot read the status of DEFDCDC{2,3} pins.
So, this information is passed through platform data depending on
how the board is wired.

Signed-off-by: Anuj Aggarwal <anuj.aggarwal@ti.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
This commit is contained in:
Anuj Aggarwal 2010-07-12 17:54:06 +05:30 • committed by Liam Girdwood
commit 7d14831e21
2 changed files with 61 additions and 7 deletions
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32
include/linux/regulator/tps6507x.h Normal file
View file

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/*
* tps6507x.h -- Voltage regulation for the Texas Instruments TPS6507X
*
* Copyright (C) 2010 Texas Instruments, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef REGULATOR_TPS6507X
#define REGULATOR_TPS6507X
/**
* tps6507x_reg_platform_data - platform data for tps6507x
* @defdcdc_default: Defines whether DCDC high or the low register controls
* output voltage by default. Valid for DCDC2 and DCDC3 outputs only.
*/
struct tps6507x_reg_platform_data {
bool defdcdc_default;
};
#endif