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4e00517945
Add device-tree support to max1586. The driver can still be used with the legacy platform data, or the new device-tree way. This work is heavily inspired by the device-tree support of its cousin max8660 driver. Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr> Signed-off-by: Mark Brown <broonie@kernel.org>
64 lines
2.1 KiB
C
64 lines
2.1 KiB
C
/*
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* max1586.h -- Voltage regulation for the Maxim 1586
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*
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* Copyright (C) 2008 Robert Jarzmik
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#ifndef REGULATOR_MAX1586
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#define REGULATOR_MAX1586
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#include <linux/regulator/machine.h>
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#define MAX1586_V3 0
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#define MAX1586_V6 1
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/* precalculated values for v3_gain */
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#define MAX1586_GAIN_NO_R24 1000000 /* 700000 .. 1475000 mV */
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#define MAX1586_GAIN_R24_3k32 1051098 /* 735768 .. 1550369 mV */
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#define MAX1586_GAIN_R24_5k11 1078648 /* 755053 .. 1591005 mV */
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#define MAX1586_GAIN_R24_7k5 1115432 /* 780802 .. 1645262 mV */
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/**
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* max1586_subdev_data - regulator data
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* @id: regulator Id (either MAX1586_V3 or MAX1586_V6)
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* @name: regulator cute name (example for V3: "vcc_core")
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* @platform_data: regulator init data (constraints, supplies, ...)
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*/
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struct max1586_subdev_data {
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int id;
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const char *name;
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struct regulator_init_data *platform_data;
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};
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/**
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* max1586_platform_data - platform data for max1586
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* @num_subdevs: number of regulators used (may be 1 or 2)
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* @subdevs: regulator used
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* At most, there will be a regulator for V3 and one for V6 voltages.
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* @v3_gain: gain on the V3 voltage output multiplied by 1e6.
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* This can be calculated as ((1 + R24/R25 + R24/185.5kOhm) * 1e6)
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* for an external resistor configuration as described in the
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* data sheet (R25=100kOhm).
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*/
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struct max1586_platform_data {
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int num_subdevs;
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struct max1586_subdev_data *subdevs;
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int v3_gain;
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};
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#endif
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