Stefan Reinauer (stefan.reinauer@coreboot.org) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/2020
-gerrit
commit c9386a2f9d57d597d6de02061a3562684a1ec5b4 Author: Stefan Reinauer reinauer@chromium.org Date: Tue Dec 11 11:20:35 2012 -0800
Fix up Maxim MAX77686 driver
... to fit into the naming convention
Change-Id: I4a7d81c4d6674d001fc831df863bd2343f6c636f Signed-off-by: Stefan Reinauer reinauer@google.com --- src/cpu/samsung/exynos5250/power.c | 2 +- src/drivers/Kconfig | 1 + src/drivers/Makefile.inc | 1 + src/drivers/maxim/Kconfig | 20 +++ src/drivers/maxim/Makefile.inc | 20 +++ src/drivers/maxim/max77686/Kconfig | 24 +++ src/drivers/maxim/max77686/Makefile.inc | 20 +++ src/drivers/maxim/max77686/max77686.c | 257 ++++++++++++++++++++++++++++++++ src/drivers/maxim/max77686/max77686.h | 134 +++++++++++++++++ src/drivers/power/Kconfig | 5 - src/drivers/power/Makefile.inc | 20 --- src/drivers/power/max77686.c | 257 -------------------------------- src/drivers/power/max77686.h | 134 ----------------- 13 files changed, 478 insertions(+), 417 deletions(-)
diff --git a/src/cpu/samsung/exynos5250/power.c b/src/cpu/samsung/exynos5250/power.c index f8062d1..7d294ed 100644 --- a/src/cpu/samsung/exynos5250/power.c +++ b/src/cpu/samsung/exynos5250/power.c @@ -29,7 +29,7 @@ #include <cpu/samsung/exynos5250/power.h> #include <cpu/samsung/exynos5250/sysreg.h> #include <cpu/samsung/exynos5-common/spl.h> -#include <drivers/power/max77686.h> +#include <drivers/maxim/max77686/max77686.h>
static void ps_hold_setup(void) { diff --git a/src/drivers/Kconfig b/src/drivers/Kconfig index ef38f34..897b665 100644 --- a/src/drivers/Kconfig +++ b/src/drivers/Kconfig @@ -25,6 +25,7 @@ source src/drivers/generic/Kconfig source src/drivers/i2c/Kconfig source src/drivers/ics/Kconfig source src/drivers/ipmi/Kconfig +source src/drivers/maxim/Kconfig source src/drivers/oxford/Kconfig if PC80_SYSTEM source src/drivers/pc80/Kconfig diff --git a/src/drivers/Makefile.inc b/src/drivers/Makefile.inc index a02b705..b2aa0c8 100644 --- a/src/drivers/Makefile.inc +++ b/src/drivers/Makefile.inc @@ -22,6 +22,7 @@ subdirs-y += dec subdirs-y += emulation subdirs-y += generic subdirs-y += i2c +subdirs-y += maxim subdirs-y += oxford subdirs-y += realtek subdirs-y += sil diff --git a/src/drivers/maxim/Kconfig b/src/drivers/maxim/Kconfig new file mode 100644 index 0000000..7d0b0ed --- /dev/null +++ b/src/drivers/maxim/Kconfig @@ -0,0 +1,20 @@ +## +## This file is part of the coreboot project. +## +## Copyright (C) 2012 The Chromium OS Authors. +## +## 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; version 2 of the License. +## +## 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA +## + +source src/drivers/maxim/max77686/Kconfig diff --git a/src/drivers/maxim/Makefile.inc b/src/drivers/maxim/Makefile.inc new file mode 100644 index 0000000..31c3d75 --- /dev/null +++ b/src/drivers/maxim/Makefile.inc @@ -0,0 +1,20 @@ +## +## This file is part of the coreboot project. +## +## Copyright (C) 2012 The Chromium OS Authors. +## +## 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; version 2 of the License. +## +## 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA +## + +subdirs-$(CONFIG_DRIVERS_MAXIM_MAX77676) += max77686 diff --git a/src/drivers/maxim/max77686/Kconfig b/src/drivers/maxim/max77686/Kconfig new file mode 100644 index 0000000..ada06f6 --- /dev/null +++ b/src/drivers/maxim/max77686/Kconfig @@ -0,0 +1,24 @@ +## +## This file is part of the coreboot project. +## +## Copyright (C) 2012 The ChromiumOS Authors +## +## 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; version 2 of the License. +## +## 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA +## + +config DRIVER_MAXIM_77686 + bool + default n + help + Maxim 77686 power regulator diff --git a/src/drivers/maxim/max77686/Makefile.inc b/src/drivers/maxim/max77686/Makefile.inc new file mode 100644 index 0000000..3fc7104 --- /dev/null +++ b/src/drivers/maxim/max77686/Makefile.inc @@ -0,0 +1,20 @@ +## +## This file is part of the coreboot project. +## +## Copyright (C) 2012 The ChromiumOS Authors +## +## 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; version 2 of the License. +## +## 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA +## + +driver-$(CONFIG_DRIVER_MAXIM_77686) += max77686.c diff --git a/src/drivers/maxim/max77686/max77686.c b/src/drivers/maxim/max77686/max77686.c new file mode 100644 index 0000000..8fbcb8f --- /dev/null +++ b/src/drivers/maxim/max77686/max77686.c @@ -0,0 +1,257 @@ +/* + * 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; +} diff --git a/src/drivers/maxim/max77686/max77686.h b/src/drivers/maxim/max77686/max77686.h new file mode 100644 index 0000000..345471e --- /dev/null +++ b/src/drivers/maxim/max77686/max77686.h @@ -0,0 +1,134 @@ +/* + * 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 + */ + +#ifndef __MAX77686_H_ +#define __MAX77686_H_ + +enum max77686_regnum { + PMIC_BUCK1 = 0, + PMIC_BUCK2, + PMIC_BUCK3, + PMIC_BUCK4, + PMIC_BUCK5, + PMIC_BUCK6, + PMIC_BUCK7, + PMIC_BUCK8, + PMIC_BUCK9, + PMIC_LDO1, + PMIC_LDO2, + PMIC_LDO3, + PMIC_LDO4, + PMIC_LDO5, + PMIC_LDO6, + PMIC_LDO7, + PMIC_LDO8, + PMIC_LDO9, + PMIC_LDO10, + PMIC_LDO11, + PMIC_LDO12, + PMIC_LDO13, + PMIC_LDO14, + PMIC_LDO15, + PMIC_LDO16, + PMIC_LDO17, + PMIC_LDO18, + PMIC_LDO19, + PMIC_LDO20, + PMIC_LDO21, + PMIC_LDO22, + PMIC_LDO23, + PMIC_LDO24, + PMIC_LDO25, + PMIC_LDO26, + PMIC_EN32KHZ_CP, +}; + +/** + * struct max77686_para - max77686 register parameters + * @param vol_addr i2c address of the given buck/ldo register + * @param vol_bitpos bit position to be set or clear within register + * @param vol_bitmask bit mask value + * @param reg_enaddr control register address, which enable the given + * given buck/ldo. + * @param reg_enbitpos bit position to be enabled + * @param reg_enbiton value to be written to buck/ldo to make it ON + * @param reg_enbitoff value to be written to buck/ldo to make it OFF + * @param vol_min minimum voltage level supported by given buck/ldo + * @param vol_div voltage division value of given buck/ldo + */ +struct max77686_para { + enum max77686_regnum regnum; + u8 vol_addr; + u8 vol_bitpos; + u8 vol_bitmask; + u8 reg_enaddr; + u8 reg_enbitpos; + u8 reg_enbitmask; + u8 reg_enbiton; + u8 reg_enbitoff; + u32 vol_min; + u32 vol_div; +}; + +/* I2C device address for pmic max77686 */ +#define MAX77686_I2C_ADDR (0x12 >> 1) + +enum { + REG_DISABLE = 0, + REG_ENABLE +}; + +enum { + MAX77686_MV = 0, /* mili volt */ + MAX77686_UV /* micro volt */ +}; + +/** + * This function enables the 32KHz coprocessor clock. + * + * Return 0 if ok, else -1 + */ +int max77686_enable_32khz_cp(void); + +/** + * Set the required voltage level of pmic + * + * @param reg register number of buck/ldo to be set + * @param volt voltage level to be set + * @param enable enable or disable bit + * @param volt_units MAX77686_MV or MAX77686_UV, unit of the + * voltage parameters + * + * @return Return 0 if ok, else -1 + */ +int max77686_volsetting(enum max77686_regnum reg, unsigned int volt, + int enable, int volt_units); + +/** + * Disable charging of the RTC backup battery + * + * @return Return 0 if ok, else -1 + */ +int max77686_disable_backup_batt(void); + +#endif /* __MAX77686_PMIC_H_ */ diff --git a/src/drivers/power/Kconfig b/src/drivers/power/Kconfig deleted file mode 100644 index 84ace13..0000000 --- a/src/drivers/power/Kconfig +++ /dev/null @@ -1,5 +0,0 @@ -config DRIVER_MAXIM_77686 - bool "Maxim 77686" - default n - help - Maxim 77686 power regulator diff --git a/src/drivers/power/Makefile.inc b/src/drivers/power/Makefile.inc deleted file mode 100644 index 3fc7104..0000000 --- a/src/drivers/power/Makefile.inc +++ /dev/null @@ -1,20 +0,0 @@ -## -## This file is part of the coreboot project. -## -## Copyright (C) 2012 The ChromiumOS Authors -## -## 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; version 2 of the License. -## -## 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA -## - -driver-$(CONFIG_DRIVER_MAXIM_77686) += max77686.c diff --git a/src/drivers/power/max77686.c b/src/drivers/power/max77686.c deleted file mode 100644 index 8fbcb8f..0000000 --- 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; -} diff --git a/src/drivers/power/max77686.h b/src/drivers/power/max77686.h deleted file mode 100644 index 345471e..0000000 --- a/src/drivers/power/max77686.h +++ /dev/null @@ -1,134 +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 - */ - -#ifndef __MAX77686_H_ -#define __MAX77686_H_ - -enum max77686_regnum { - PMIC_BUCK1 = 0, - PMIC_BUCK2, - PMIC_BUCK3, - PMIC_BUCK4, - PMIC_BUCK5, - PMIC_BUCK6, - PMIC_BUCK7, - PMIC_BUCK8, - PMIC_BUCK9, - PMIC_LDO1, - PMIC_LDO2, - PMIC_LDO3, - PMIC_LDO4, - PMIC_LDO5, - PMIC_LDO6, - PMIC_LDO7, - PMIC_LDO8, - PMIC_LDO9, - PMIC_LDO10, - PMIC_LDO11, - PMIC_LDO12, - PMIC_LDO13, - PMIC_LDO14, - PMIC_LDO15, - PMIC_LDO16, - PMIC_LDO17, - PMIC_LDO18, - PMIC_LDO19, - PMIC_LDO20, - PMIC_LDO21, - PMIC_LDO22, - PMIC_LDO23, - PMIC_LDO24, - PMIC_LDO25, - PMIC_LDO26, - PMIC_EN32KHZ_CP, -}; - -/** - * struct max77686_para - max77686 register parameters - * @param vol_addr i2c address of the given buck/ldo register - * @param vol_bitpos bit position to be set or clear within register - * @param vol_bitmask bit mask value - * @param reg_enaddr control register address, which enable the given - * given buck/ldo. - * @param reg_enbitpos bit position to be enabled - * @param reg_enbiton value to be written to buck/ldo to make it ON - * @param reg_enbitoff value to be written to buck/ldo to make it OFF - * @param vol_min minimum voltage level supported by given buck/ldo - * @param vol_div voltage division value of given buck/ldo - */ -struct max77686_para { - enum max77686_regnum regnum; - u8 vol_addr; - u8 vol_bitpos; - u8 vol_bitmask; - u8 reg_enaddr; - u8 reg_enbitpos; - u8 reg_enbitmask; - u8 reg_enbiton; - u8 reg_enbitoff; - u32 vol_min; - u32 vol_div; -}; - -/* I2C device address for pmic max77686 */ -#define MAX77686_I2C_ADDR (0x12 >> 1) - -enum { - REG_DISABLE = 0, - REG_ENABLE -}; - -enum { - MAX77686_MV = 0, /* mili volt */ - MAX77686_UV /* micro volt */ -}; - -/** - * This function enables the 32KHz coprocessor clock. - * - * Return 0 if ok, else -1 - */ -int max77686_enable_32khz_cp(void); - -/** - * Set the required voltage level of pmic - * - * @param reg register number of buck/ldo to be set - * @param volt voltage level to be set - * @param enable enable or disable bit - * @param volt_units MAX77686_MV or MAX77686_UV, unit of the - * voltage parameters - * - * @return Return 0 if ok, else -1 - */ -int max77686_volsetting(enum max77686_regnum reg, unsigned int volt, - int enable, int volt_units); - -/** - * Disable charging of the RTC backup battery - * - * @return Return 0 if ok, else -1 - */ -int max77686_disable_backup_batt(void); - -#endif /* __MAX77686_PMIC_H_ */