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435a728587
This fixes write access to PMIC registers, the bug was introduced partly in commit 64aac65099 and in commit c9fe76dd91. It was tested on an i.mx31 with a mc13783. Signed-off-by: Helmut Raiger <helmut.raiger@hale.at> Acked-by: Stefano Babic <sbabic@denx.de>
64 lines
1.8 KiB
C
64 lines
1.8 KiB
C
/*
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* Copyright (C) 2011 Samsung Electronics
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* Lukasz Majewski <l.majewski@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 <spi.h>
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#include <pmic.h>
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#include <fsl_pmic.h>
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#if defined(CONFIG_PMIC_SPI)
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static u32 pmic_spi_prepare_tx(u32 reg, u32 *val, u32 write)
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{
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return (write << 31) | (reg << 25) | (*val & 0x00FFFFFF);
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}
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#endif
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int pmic_init(void)
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{
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struct pmic *p = get_pmic();
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static const char name[] = "FSL_PMIC";
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p->name = name;
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p->number_of_regs = PMIC_NUM_OF_REGS;
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#if defined(CONFIG_PMIC_SPI)
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p->interface = PMIC_SPI;
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p->bus = CONFIG_FSL_PMIC_BUS;
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p->hw.spi.cs = CONFIG_FSL_PMIC_CS;
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p->hw.spi.clk = CONFIG_FSL_PMIC_CLK;
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p->hw.spi.mode = CONFIG_FSL_PMIC_MODE;
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p->hw.spi.bitlen = CONFIG_FSL_PMIC_BITLEN;
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p->hw.spi.flags = SPI_XFER_BEGIN | SPI_XFER_END;
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p->hw.spi.prepare_tx = pmic_spi_prepare_tx;
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#elif defined(CONFIG_PMIC_I2C)
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p->interface = PMIC_I2C;
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p->hw.i2c.addr = CONFIG_SYS_FSL_PMIC_I2C_ADDR;
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p->hw.i2c.tx_num = 3;
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p->bus = I2C_PMIC;
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#else
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#error "You must select CONFIG_PMIC_SPI or CONFIG_PMIC_I2C"
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#endif
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return 0;
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}
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