diff options
Diffstat (limited to 'driver/charger/sy21612.c')
| -rw-r--r-- | driver/charger/sy21612.c | 213 |
1 files changed, 0 insertions, 213 deletions
diff --git a/driver/charger/sy21612.c b/driver/charger/sy21612.c deleted file mode 100644 index 7bc6caa4ea..0000000000 --- a/driver/charger/sy21612.c +++ /dev/null @@ -1,213 +0,0 @@ -/* Copyright 2017 The Chromium OS Authors. All rights reserved. - * Use of this source code is governed by a BSD-style license that can be - * found in the LICENSE file. - * - * SILERGY SY21612 buck-boost converter driver. - */ - - -#include "console.h" -#include "hooks.h" -#include "i2c.h" -#include "sy21612.h" -#include "task.h" -#include "util.h" - -/* Console output macros */ -#define CPUTS(outstr) cputs(CC_CHARGER, outstr) -#define CPRINTF(format, args...) cprintf(CC_CHARGER, format, ## args) -#define CPRINTS(format, args...) cprints(CC_CHARGER, format, ## args) - -static int sy21612_clear_set_reg(int reg, int clear, int set) -{ - int val, old_val, rv; - - rv = i2c_read8(I2C_PORT_SY21612, SY21612_ADDR_FLAGS, reg, &old_val); - if (rv) - return rv; - - val = old_val; - val &= ~clear; - val |= set; - - if (val != old_val || clear || set) - rv = i2c_write8(I2C_PORT_SY21612, SY21612_ADDR_FLAGS, - reg, val); - - return rv; -} - -static int sy21612_read(int reg, int *val) -{ - return i2c_read8(I2C_PORT_SY21612, SY21612_ADDR_FLAGS, reg, val); -} - -int sy21612_enable_regulator(int enable) -{ - return enable ? - sy21612_clear_set_reg(SY21612_CTRL1, 0, SY21612_CTRL1_REG_EN) : - sy21612_clear_set_reg(SY21612_CTRL1, SY21612_CTRL1_REG_EN, 0); -} - -int sy21612_enable_adc(int enable) -{ - return enable ? - sy21612_clear_set_reg(SY21612_CTRL1, 0, SY21612_CTRL1_ADC_EN) : - sy21612_clear_set_reg(SY21612_CTRL1, SY21612_CTRL1_ADC_EN, 0); -} - -int sy21612_set_adc_mode(int auto_mode) -{ - return auto_mode ? - sy21612_clear_set_reg(SY21612_CTRL1, - 0, SY21612_CTRL1_ADC_AUTO_MODE) : - sy21612_clear_set_reg(SY21612_CTRL1, - SY21612_CTRL1_ADC_AUTO_MODE, 0); -} - -int sy21612_set_vbus_discharge(int auto_discharge) -{ - return auto_discharge ? - sy21612_clear_set_reg(SY21612_CTRL1, - SY21612_CTRL1_VBUS_NDISCHG, 0) : - sy21612_clear_set_reg(SY21612_CTRL1, - 0, SY21612_CTRL1_VBUS_NDISCHG); -} - -int sy21612_set_switching_freq(enum sy21612_switching_freq freq) -{ - return sy21612_clear_set_reg(SY21612_CTRL2, - SY21612_CTRL2_FREQ_MASK, - freq << SY21612_CTRL2_FREQ_SHIFT); -} - -int sy21612_set_vbus_volt(enum sy21612_vbus_volt volt) -{ - return sy21612_clear_set_reg(SY21612_CTRL2, - SY21612_CTRL2_VBUS_MASK, - volt << SY21612_CTRL2_VBUS_SHIFT); -} - -int sy21612_set_vbus_adj(enum sy21612_vbus_adj adj) -{ - return sy21612_clear_set_reg(SY21612_CTRL2, - SY21612_CTRL2_VBUS_ADJ_MASK, - adj << SY21612_CTRL2_VBUS_ADJ_SHIFT); -} - -int sy21612_set_sink_mode(int sink_mode) -{ - return sink_mode ? - sy21612_clear_set_reg(SY21612_PROT2, - 0, SY21612_PROT2_SINK_MODE) : - sy21612_clear_set_reg(SY21612_PROT2, - SY21612_PROT2_SINK_MODE, 0); -} - -int sy21612_is_power_good(void) -{ - int reg; - - if (sy21612_read(SY21612_STATE, ®)) - return 0; - - return reg & SY21612_STATE_POWER_GOOD; -} - -int sy21612_read_clear_int(void) -{ - int reg; - - if (sy21612_read(SY21612_INT, ®)) - return 0; - - return reg; -} - -int sy21612_get_vbat_voltage(void) -{ - int reg; - - if (sy21612_read(SY21612_VBAT_VOLT, ®)) - return 0; - - return reg * 25000 / 255; -} - -int sy21612_get_vbus_voltage(void) -{ - int reg; - - if (sy21612_read(SY21612_VBUS_VOLT, ®)) - return 0; - - return reg * 25000 / 255; -} - -int sy21612_get_vbus_current(void) -{ - int reg; - - if (sy21612_read(SY21612_VBUS_CURRENT, ®)) - return 0; - - /* - * delta V in range 0 ~ 67mV - * sense resistor 10 mOhm - */ - return reg * 6700 / 255; -} - -void sy21612_int(enum gpio_signal signal) -{ -#ifdef HAS_TASK_SY21612 - task_wake(TASK_ID_SY21612); -#endif -} - -#ifdef HAS_TASK_SY21612 -void sy21612_task(void *u) -{ - int flags; - - while (1) { - task_wait_event(-1); - if (sy21612_read(SY21612_INT, &flags)) - continue; - /* TODO: notify the error condition and enable regulator */ - if (flags & SY21612_INT_VBUS_OCP) - CPUTS("buck-boost VBUS OCP\n"); - if (flags & SY21612_INT_INDUCTOR_OCP) - CPUTS("buck-boost inductor OCP\n"); - if (flags & SY21612_INT_UVP) - CPUTS("buck-boost UVP\n"); - if (flags & SY21612_INT_OTP) - CPUTS("buck-boost OTP\n"); - } -} -#endif - -#ifdef CONFIG_CMD_CHARGER -static int command_sy21612(int argc, char **argv) -{ - int i, val, rv; - - ccputs("sy21612 regs:\n"); - for (i = 0; i < 9; i++) { - ccprintf("[%02x] ", i); - rv = sy21612_read(i, &val); - if (rv) - ccprintf(" x (%d)\n", rv); - else - ccprintf("%02x - %pb\n", val, BINARY_VALUE(val, 8)); - } - - ccprintf("vbat voltage: %d mV\n", sy21612_get_vbat_voltage()); - ccprintf("vbus voltage: %d mV\n", sy21612_get_vbus_voltage()); - ccprintf("vbus current: %d mA\n", sy21612_get_vbus_current()); - - return 0; -} -DECLARE_CONSOLE_COMMAND(sy21612, command_sy21612, - NULL, NULL); -#endif |