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author | Stefan Reinauer <reinauer@chromium.org> | 2012-12-11 11:20:35 -0800 |
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committer | Stefan Reinauer <stefan.reinauer@coreboot.org> | 2012-12-12 00:27:04 +0100 |
commit | de48f0fd4213f8d0e2c71cbd3929e629fd76eb96 (patch) | |
tree | 282814f9ffc35b06d969c410c999f4f5ec574b87 /src/drivers/power/max77686.c | |
parent | 0dbb329b7d3edf9c9ac426e31109bdc14b1b7bf2 (diff) | |
download | coreboot-de48f0fd4213f8d0e2c71cbd3929e629fd76eb96.tar.xz |
Fix up Maxim MAX77686 driver
... to fit into the naming convention
Change-Id: I4a7d81c4d6674d001fc831df863bd2343f6c636f
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/2020
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Tested-by: build bot (Jenkins)
Diffstat (limited to 'src/drivers/power/max77686.c')
-rw-r--r-- | src/drivers/power/max77686.c | 257 |
1 files changed, 0 insertions, 257 deletions
diff --git a/src/drivers/power/max77686.c b/src/drivers/power/max77686.c deleted file mode 100644 index 8fbcb8fb31..0000000000 --- a/src/drivers/power/max77686.c +++ /dev/null @@ -1,257 +0,0 @@ -/* - * Copyright (C) 2012 Samsung Electronics - * Alim Akhtar <alim.akhtar@samsung.com> - * - * See file CREDITS for list of people who contributed to this - * project. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; either version 2 of - * the License, or (at your option) any later version. - * - * 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 - */ - -#include <common.h> -#include <smbus.h> -#include <max77686.h> - -/* Chip register numbers (not exported from this module) */ -enum { - REG_BBAT = 0x7e, - - /* Bits for BBAT */ - BBAT_BBCHOSTEN_MASK = 1 << 0, - BBAT_BBCVS_SHIFT = 3, - BBAT_BBCVS_MASK = 3 << BBAT_BBCVS_SHIFT, -}; - -/* - * Max77686 parameters values - * see max77686.h for parameters details - */ -struct max77686_para max77686_param[] = {/*{regnum, vol_addr, vol_bitpos, - vol_bitmask, reg_enaddr, reg_enbitpos, reg_enbitmask, reg_enbiton, - reg_enbitoff, vol_min, vol_div}*/ - {PMIC_BUCK1, 0x11, 0x0, 0x3F, 0x10, 0x0, 0x3, 0x3, 0x0, 750, 50000}, - {PMIC_BUCK2, 0x14, 0x0, 0xFF, 0x12, 0x4, 0x3, 0x1, 0x0, 600, 12500}, - {PMIC_BUCK3, 0x1E, 0x0, 0xFF, 0x1C, 0x4, 0x3, 0x1, 0x0, 600, 12500}, - {PMIC_BUCK4, 0x28, 0x0, 0xFF, 0x26, 0x4, 0x3, 0x1, 0x0, 600, 12500}, - {PMIC_BUCK5, 0x31, 0x0, 0x3F, 0x30, 0x0, 0x3, 0x3, 0x0, 750, 50000}, - {PMIC_BUCK6, 0x33, 0x0, 0x3F, 0x32, 0x0, 0x3, 0x3, 0x0, 750, 50000}, - {PMIC_BUCK7, 0x35, 0x0, 0x3F, 0x34, 0x0, 0x3, 0x3, 0x0, 750, 50000}, - {PMIC_BUCK8, 0x37, 0x0, 0x3F, 0x36, 0x0, 0x3, 0x3, 0x0, 750, 50000}, - {PMIC_BUCK9, 0x39, 0x0, 0x3F, 0x38, 0x0, 0x3, 0x3, 0x0, 750, 50000}, - {PMIC_LDO1, 0x40, 0x0, 0x3F, 0x40, 0x6, 0x3, 0x3, 0x0, 800, 25000}, - {PMIC_LDO2, 0x41, 0x0, 0x3F, 0x41, 0x6, 0x3, 0x1, 0x0, 800, 25000}, - {PMIC_LDO3, 0x42, 0x0, 0x3F, 0x42, 0x6, 0x3, 0x3, 0x0, 800, 50000}, - {PMIC_LDO4, 0x43, 0x0, 0x3F, 0x43, 0x6, 0x3, 0x3, 0x0, 800, 50000}, - {PMIC_LDO5, 0x44, 0x0, 0x3F, 0x44, 0x6, 0x3, 0x3, 0x0, 800, 50000}, - {PMIC_LDO6, 0x45, 0x0, 0x3F, 0x45, 0x6, 0x3, 0x1, 0x0, 800, 25000}, - {PMIC_LDO7, 0x46, 0x0, 0x3F, 0x46, 0x6, 0x3, 0x1, 0x0, 800, 25000}, - {PMIC_LDO8, 0x47, 0x0, 0x3F, 0x47, 0x6, 0x3, 0x1, 0x0, 800, 25000}, - {PMIC_LDO9, 0x48, 0x0, 0x3F, 0x48, 0x6, 0x3, 0x3, 0x0, 800, 50000}, - {PMIC_LDO10, 0x49, 0x0, 0x3F, 0x49, 0x6, 0x3, 0x1, 0x0, 800, 50000}, - {PMIC_LDO11, 0x4A, 0x0, 0x3F, 0x4A, 0x6, 0x3, 0x1, 0x0, 800, 50000}, - {PMIC_LDO12, 0x4B, 0x0, 0x3F, 0x4B, 0x6, 0x3, 0x1, 0x0, 800, 50000}, - {PMIC_LDO13, 0x4C, 0x0, 0x3F, 0x4C, 0x6, 0x3, 0x3, 0x0, 800, 50000}, - {PMIC_LDO14, 0x4D, 0x0, 0x3F, 0x4D, 0x6, 0x3, 0x1, 0x0, 800, 50000}, - {PMIC_LDO15, 0x4E, 0x0, 0x3F, 0x4E, 0x6, 0x3, 0x1, 0x0, 800, 25000}, - {PMIC_LDO16, 0x4F, 0x0, 0x3F, 0x4F, 0x6, 0x3, 0x1, 0x0, 800, 50000}, - {PMIC_LDO17, 0x50, 0x0, 0x3F, 0x50, 0x6, 0x3, 0x3, 0x0, 800, 50000}, - {PMIC_LDO18, 0x51, 0x0, 0x3F, 0x51, 0x6, 0x3, 0x3, 0x0, 800, 50000}, - {PMIC_LDO19, 0x52, 0x0, 0x3F, 0x52, 0x6, 0x3, 0x3, 0x0, 800, 50000}, - {PMIC_LDO20, 0x53, 0x0, 0x3F, 0x53, 0x6, 0x3, 0x3, 0x0, 800, 50000}, - {PMIC_LDO21, 0x54, 0x0, 0x3F, 0x54, 0x6, 0x3, 0x3, 0x0, 800, 50000}, - {PMIC_LDO22, 0x55, 0x0, 0x3F, 0x55, 0x6, 0x3, 0x3, 0x0, 800, 50000}, - {PMIC_LDO23, 0x56, 0x0, 0x3F, 0x56, 0x6, 0x3, 0x3, 0x0, 800, 50000}, - {PMIC_LDO24, 0x57, 0x0, 0x3F, 0x57, 0x6, 0x3, 0x3, 0x0, 800, 50000}, - {PMIC_LDO25, 0x58, 0x0, 0x3F, 0x58, 0x6, 0x3, 0x3, 0x0, 800, 50000}, - {PMIC_LDO26, 0x59, 0x0, 0x3F, 0x59, 0x6, 0x3, 0x3, 0x0, 800, 50000}, - {PMIC_EN32KHZ_CP, 0x0, 0x0, 0x0, 0x7F, 0x1, 0x1, 0x1, 0x0, 0x0, 0x0}, -}; - -/* - * Write a value to a register - * - * @param chip_addr i2c addr for max77686 - * @param reg reg number to write - * @param val value to be written - * - */ -static inline int max77686_i2c_write(unsigned char chip_addr, - unsigned int reg, unsigned char val) -{ - return i2c_write(chip_addr, reg, 1, &val, 1); -} - -/* - * Read a value from a register - * - * @param chip_addr i2c addr for max77686 - * @param reg reg number to write - * @param val value to be written - * - */ -static inline int max77686_i2c_read(unsigned char chip_addr, - unsigned int reg, unsigned char *val) -{ - return i2c_read(chip_addr, reg, 1, val, 1); -} - -/* - * Enable the max77686 register - * - * @param reg register number of buck/ldo to be enabled - * @param enable enable or disable bit - * - * REG_DISABLE = 0, - needed to set the buck/ldo enable bit OFF - * @return Return 0 if ok, else -1 - */ -static int max77686_enablereg(enum max77686_regnum reg, int enable) -{ - struct max77686_para *pmic; - unsigned char read_data; - int ret; - - pmic = &max77686_param[reg]; - - ret = max77686_i2c_read(MAX77686_I2C_ADDR, pmic->reg_enaddr, - &read_data); - if (ret != 0) { - debug("max77686 i2c read failed.\n"); - return -1; - } - - if (enable == REG_DISABLE) { - clrbits_8(&read_data, - pmic->reg_enbitmask << pmic->reg_enbitpos); - } else { - clrsetbits_8(&read_data, - pmic->reg_enbitmask << pmic->reg_enbitpos, - pmic->reg_enbiton << pmic->reg_enbitpos); - } - - ret = max77686_i2c_write(MAX77686_I2C_ADDR, - pmic->reg_enaddr, read_data); - if (ret != 0) { - debug("max77686 i2c write failed.\n"); - return -1; - } - - return 0; -} - -static int max77686_do_volsetting(enum max77686_regnum reg, unsigned int volt, - int enable, int volt_units) -{ - struct max77686_para *pmic; - unsigned char read_data; - int vol_level = 0; - int ret; - - pmic = &max77686_param[reg]; - - if (pmic->vol_addr == 0) { - debug("not a voltage register.\n"); - return -1; - } - - ret = max77686_i2c_read(MAX77686_I2C_ADDR, pmic->vol_addr, &read_data); - if (ret != 0) { - debug("max77686 i2c read failed.\n"); - return -1; - } - - if (volt_units == MAX77686_UV) - vol_level = volt - pmic->vol_min * 1000; - else - vol_level = (volt - pmic->vol_min) * 1000; - - if (vol_level < 0) { - debug("Not a valid voltage level to set\n"); - return -1; - } - vol_level /= pmic->vol_div; - - clrsetbits_8(&read_data, pmic->vol_bitmask << pmic->vol_bitpos, - vol_level << pmic->vol_bitpos); - - ret = max77686_i2c_write(MAX77686_I2C_ADDR, pmic->vol_addr, read_data); - if (ret != 0) { - debug("max77686 i2c write failed.\n"); - return -1; - } - - ret = max77686_enablereg(reg, enable); - if (ret != 0) { - debug("Failed to enable buck/ldo.\n"); - return -1; - } - - return 0; -} - -int max77686_volsetting(enum max77686_regnum reg, unsigned int volt, - int enable, int volt_units) -{ - int old_bus = i2c_get_bus_num(); - int ret; - - i2c_set_bus_num(0); - ret = max77686_do_volsetting(reg, volt, enable, volt_units); - i2c_set_bus_num(old_bus); - return ret; -} - -int max77686_enable_32khz_cp(void) -{ - i2c_set_bus_num(0); - return max77686_enablereg(PMIC_EN32KHZ_CP, REG_ENABLE); -} - -int max77686_disable_backup_batt(void) -{ - unsigned char val; - int ret; - - i2c_set_bus_num(0); - ret = max77686_i2c_read(MAX77686_I2C_ADDR, REG_BBAT, &val); - if (ret) { - debug("max77686 i2c read failed\n"); - return ret; - } - - /* If we already have the correct values, exit */ - if ((val & (BBAT_BBCVS_MASK | BBAT_BBCHOSTEN_MASK)) == - BBAT_BBCVS_MASK) - return 0; - - /* First disable charging */ - val &= ~BBAT_BBCHOSTEN_MASK; - ret = max77686_i2c_write(MAX77686_I2C_ADDR, REG_BBAT, val); - if (ret) { - debug("max77686 i2c write failed\n"); - return -1; - } - - /* Finally select 3.5V to minimize power consumption */ - val |= BBAT_BBCVS_MASK; - ret = max77686_i2c_write(MAX77686_I2C_ADDR, REG_BBAT, val); - if (ret) { - debug("max77686 i2c write failed\n"); - return -1; - } - - return 0; -} |