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![Vincent Stehlé](/assets/img/avatar_default.png)
We handle i2c_write return code and complain in case of error. We propagate the error, too, to allow better handling at the upper level in the future. Signed-off-by: Vincent Stehlé <v-stehle@ti.com>
75 lines
1.9 KiB
C
75 lines
1.9 KiB
C
/*
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* (C) Copyright 2012
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* Texas Instruments, <www.ti.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 <config.h>
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#include <twl6035.h>
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/* Functions to read and write from TWL6030 */
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int twl6035_i2c_write_u8(u8 chip_no, u8 val, u8 reg)
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{
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return i2c_write(chip_no, reg, 1, &val, 1);
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}
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int twl6035_i2c_read_u8(u8 chip_no, u8 *val, u8 reg)
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{
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return i2c_read(chip_no, reg, 1, val, 1);
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}
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/* To align with i2c mw/mr address, reg, val command syntax */
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static inline int palmas_write_u8(u8 chip_no, u8 reg, u8 val)
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{
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return i2c_write(chip_no, reg, 1, &val, 1);
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}
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static inline int palmas_read_u8(u8 chip_no, u8 reg, u8 *val)
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{
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return i2c_read(chip_no, reg, 1, val, 1);
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}
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void twl6035_init_settings(void)
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{
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return;
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}
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int twl6035_mmc1_poweron_ldo(void)
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{
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u8 val = 0;
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/* set LDO9 TWL6035 to 3V */
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val = 0x2b; /* (3 -.9)*28 +1 */
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if (palmas_write_u8(0x48, LDO9_VOLTAGE, val)) {
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printf("twl6035: could not set LDO9 voltage.\n");
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return 1;
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}
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/* TURN ON LDO9 */
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val = LDO_ON | LDO_MODE_SLEEP | LDO_MODE_ACTIVE;
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if (palmas_write_u8(0x48, LDO9_CTRL, val)) {
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printf("twl6035: could not turn on LDO9.\n");
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return 1;
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}
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return 0;
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}
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