/* SPDX-License-Identifier: GPL-2.0-only */ #include <console/console.h> #include <device/i2c_simple.h> #include <soc/da9212.h> enum { DA9212_SLAVE_ADDR = 0x68, }; static void da9212_hw_init(uint8_t i2c_num, unsigned char variant_id) { int ret = 0; int buck_mode = DA9212_BUCK_MODE_AUTO; if (variant_id == DA9212_VARIANT_ID_AB) buck_mode = DA9212_BUCK_MODE_PWM; /* page select to 0 */ ret |= i2c_write_field(i2c_num, DA9212_SLAVE_ADDR, DA9212_REG_PAGE_CON, DA9212_REG_PAGE0, DA9212_REG_PAGE_MASK, DA9212_REG_PAGE_SHIFT); ret |= i2c_write_field(i2c_num, DA9212_SLAVE_ADDR, DA9212_REG_BUCKA_CONT, DA9212_BUCK_GPI_GPIO1, DA9212_BUCK_GPI_MASK, DA9212_BUCK_GPI_SHIFT); ret |= i2c_write_field(i2c_num, DA9212_SLAVE_ADDR, DA9212_REG_BUCKB_CONT, DA9212_BUCK_GPI_OFF, DA9212_BUCK_GPI_OFF, DA9212_BUCK_GPI_SHIFT); ret |= i2c_write_field(i2c_num, DA9212_SLAVE_ADDR, DA9212_REG_BUCKA_CONT, DA9212_VBUCK_SEL_A, DA9212_VBUCK_SEL_MASK, DA9212_VBUCK_SEL_SHIFT); ret |= i2c_write_field(i2c_num, DA9212_SLAVE_ADDR, DA9212_REG_BUCKB_CONT, DA9212_VBUCK_SEL_A, DA9212_VBUCK_SEL_MASK, DA9212_VBUCK_SEL_SHIFT); ret |= i2c_write_field(i2c_num, DA9212_SLAVE_ADDR, DA9212_REG_BUCKA_CONF, buck_mode, DA9212_BUCK_MODE_MASK, DA9212_BUCK_MODE_SHIFT); ret |= i2c_write_field(i2c_num, DA9212_SLAVE_ADDR, DA9212_REG_BUCKB_CONF, buck_mode, DA9212_BUCK_MODE_MASK, DA9212_BUCK_MODE_SHIFT); if (ret) printk(BIOS_ERR, "%s failed\n", __func__); } void da9212_probe(uint8_t i2c_num) { int ret = 0; unsigned char device_id = 0; unsigned char variant_id = 0; /* select to page 4, clear REVERT at first time */ ret |= i2c_write_field(i2c_num, DA9212_SLAVE_ADDR, DA9212_REG_PAGE_CON, DA9212_REG_PAGE4, 0xF, DA9212_REG_PAGE_SHIFT); ret |= i2c_read_field(i2c_num, DA9212_SLAVE_ADDR, DA9212_REG_DEVICE_ID, &device_id, 0xFF, 0); ret |= i2c_read_field(i2c_num, DA9212_SLAVE_ADDR, DA9212_REG_VARIANT_ID, &variant_id, 0xFF, 0); printk(BIOS_INFO, "%s: device ID = %#x, variant ID = %#x\n", __func__, device_id, variant_id); /* Check device ID is DA9212 */ if (device_id != DA9212_ID || ret) { printk(BIOS_ERR, "unknown DA9212 device_id\n"); return; } da9212_hw_init(i2c_num, variant_id); }