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4050f0700f
This patch adds fdt support to MAX77686. Signed-off-by: Rajeshwari Shinde <rajeshwari.s@samsung.com> Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
79 lines
2 KiB
C
79 lines
2 KiB
C
/*
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* Copyright (C) 2012 Samsung Electronics
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* Rajeshwari Shinde <rajeshwari.s@samsung.com>
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (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,
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* MA 02111-1307 USA
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*/
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#include <common.h>
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#include <fdtdec.h>
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#include <i2c.h>
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#include <power/pmic.h>
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#include <power/max77686_pmic.h>
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#include <errno.h>
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DECLARE_GLOBAL_DATA_PTR;
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int pmic_init(unsigned char bus)
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{
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static const char name[] = "MAX77686_PMIC";
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struct pmic *p = pmic_alloc();
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if (!p) {
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printf("%s: POWER allocation error!\n", __func__);
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return -ENOMEM;
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}
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#ifdef CONFIG_OF_CONTROL
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const void *blob = gd->fdt_blob;
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int node, parent;
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node = fdtdec_next_compatible(blob, 0, COMPAT_MAXIM_MAX77686_PMIC);
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if (node < 0) {
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debug("PMIC: No node for PMIC Chip in device tree\n");
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debug("node = %d\n", node);
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return -1;
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}
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parent = fdt_parent_offset(blob, node);
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if (parent < 0) {
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debug("%s: Cannot find node parent\n", __func__);
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return -1;
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}
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p->bus = i2c_get_bus_num_fdt(parent);
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if (p->bus < 0) {
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debug("%s: Cannot find I2C bus\n", __func__);
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return -1;
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}
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p->hw.i2c.addr = fdtdec_get_int(blob, node, "reg", 9);
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#else
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p->bus = bus;
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p->hw.i2c.addr = MAX77686_I2C_ADDR;
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#endif
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p->name = name;
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p->interface = PMIC_I2C;
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p->number_of_regs = PMIC_NUM_OF_REGS;
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p->hw.i2c.tx_num = 1;
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puts("Board PMIC init\n");
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return 0;
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}
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