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regulator: add ti tps55287
add ti tps55287 regulator Signed-off-by: Fin Maaß <f.maass@vogl-electronic.com>
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‎drivers/regulator/CMakeLists.txt‎

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@@ -20,6 +20,7 @@ zephyr_library_sources_ifdef(CONFIG_REGULATOR_PCA9420 regulator_pca9420.c)
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zephyr_library_sources_ifdef(CONFIG_REGULATOR_PCA9422 regulator_pca9422.c)
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zephyr_library_sources_ifdef(CONFIG_REGULATOR_PF1550 regulator_pf1550.c)
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zephyr_library_sources_ifdef(CONFIG_REGULATOR_SHELL regulator_shell.c)
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zephyr_library_sources_ifdef(CONFIG_REGULATOR_TPS55287 regulator_tps55287.c)
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zephyr_library_sources_ifdef(CONFIG_REGULATOR_RPI_PICO regulator_rpi_pico.c)
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zephyr_library_sources_ifdef(CONFIG_REGULATOR_NXP_VREF regulator_nxp_vref.c)
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zephyr_library_sources_ifdef(CONFIG_REGULATOR_NXP_VREFV1 regulator_nxp_vrefv1.c)

‎drivers/regulator/Kconfig‎

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@@ -42,6 +42,7 @@ source "drivers/regulator/Kconfig.pca9420"
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source "drivers/regulator/Kconfig.pca9422"
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source "drivers/regulator/Kconfig.pf1550"
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source "drivers/regulator/Kconfig.rpi_pico"
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source "drivers/regulator/Kconfig.tps55287"
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source "drivers/regulator/Kconfig.nxp_vref"
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source "drivers/regulator/Kconfig.nxp_vrefv1"
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source "drivers/regulator/Kconfig.mpm54304"

‎drivers/regulator/Kconfig.tps55287‎

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# SPDX-FileCopyrightText: Copyright The Zephyr Project Contributors
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# SPDX-License-Identifier: Apache-2.0
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config REGULATOR_TPS55287
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bool "TPS55287 regulator driver"
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default y
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depends on DT_HAS_TI_TPS55287_ENABLED
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select I2C
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help
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Enable support for the TPS55287 regulator.
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if REGULATOR_TPS55287
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config REGULATOR_TPS55287_INIT_PRIORITY
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int "TPS55287 regulator driver init priority"
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default 51
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help
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Init priority for the TPS55287 regulator driver. This must be higher
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than the parent I2C bus init priority.
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endif

‎drivers/regulator/regulator_tps55287.c‎

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/*
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* SPDX-FileCopyrightText: Copyright The Zephyr Project Contributors
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* SPDX-License-Identifier: Apache-2.0
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*/
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#define DT_DRV_COMPAT ti_tps55287
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#include <zephyr/drivers/i2c.h>
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#include <zephyr/drivers/regulator.h>
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#include <zephyr/logging/log.h>
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#include <zephyr/sys/byteorder.h>
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#include <zephyr/sys/linear_range.h>
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#include <zephyr/sys/util.h>
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LOG_MODULE_REGISTER(tps55287, CONFIG_REGULATOR_LOG_LEVEL);
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#define TPS55287_REG_REF 0x00U
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#define TPS55287_REG_VOUT_FS 0x04U
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#define TPS55287_REG_MODE 0x06U
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#define TPS55287_REG_VOUT_FS_INTFB_MASK BIT_MASK(2)
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#define TPS55287_REG_MODE_OE BIT(7)
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/* The order of the voltage ranges is important, as it maps to the VOUT_FS register */
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static const struct linear_range core_ranges[] = {
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LINEAR_RANGE_INIT(800000u, 2500u, 0xf0, BIT_MASK(11)),
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LINEAR_RANGE_INIT(800000u, 5000u, 0x50, BIT_MASK(11)),
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LINEAR_RANGE_INIT(800000u, 7500u, 0x1a, BIT_MASK(11)),
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LINEAR_RANGE_INIT(800000u, 10000u, 0x00, BIT_MASK(11)),
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};
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struct regulator_tps55287_config {
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struct regulator_common_config common;
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struct i2c_dt_spec i2c;
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};
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struct regulator_tps55287_data {
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struct regulator_common_data data;
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};
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static unsigned int regulator_tps55287_count_voltages(const struct device *dev)
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{
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return linear_range_group_values_count(core_ranges, ARRAY_SIZE(core_ranges));
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}
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static int regulator_tps55287_list_voltage(const struct device *dev, unsigned int idx,
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int32_t *volt_uv)
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{
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for (uint8_t i = 0U; i < ARRAY_SIZE(core_ranges); i++) {
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if (linear_range_get_value(&core_ranges[i], idx, volt_uv) == 0) {
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return 0;
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}
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idx -= linear_range_values_count(&core_ranges[i]);
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}
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return -EINVAL;
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}
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static int regulator_tps55287_set_voltage(const struct device *dev, int32_t min_uv, int32_t max_uv)
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{
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const struct regulator_tps55287_config *config = dev->config;
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uint8_t buf[3] = {0};
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uint16_t idx;
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uint8_t vout_fs_reg;
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int ret;
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ret = i2c_reg_read_byte_dt(&config->i2c, TPS55287_REG_VOUT_FS, &vout_fs_reg);
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if (ret < 0) {
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return ret;
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}
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vout_fs_reg &= TPS55287_REG_VOUT_FS_INTFB_MASK;
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ret = linear_range_get_win_index(&core_ranges[vout_fs_reg], min_uv, max_uv, &idx);
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/* If we couldn't find a matching voltage in the current range, check the other ranges */
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if (ret < 0) {
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vout_fs_reg = ARRAY_SIZE(core_ranges);
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/* We start with the highest voltage range and work our way down */
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do {
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vout_fs_reg--;
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ret = linear_range_get_win_index(&core_ranges[vout_fs_reg], min_uv, max_uv,
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&idx);
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} while ((ret < 0) && (vout_fs_reg > 0U));
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if (ret < 0) {
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return ret;
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}
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ret = i2c_reg_write_byte_dt(&config->i2c, TPS55287_REG_VOUT_FS, vout_fs_reg);
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if (ret < 0) {
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return ret;
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}
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}
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LOG_DBG("%s: Setting voltage to range %u, index %u", dev->name, vout_fs_reg, idx);
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buf[0] = TPS55287_REG_REF;
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sys_put_be16(idx, &buf[1]);
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return i2c_write_dt(&config->i2c, buf, sizeof(buf));
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}
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static int regulator_tps55287_get_voltage(const struct device *dev, int32_t *volt_uv)
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{
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const struct regulator_tps55287_config *config = dev->config;
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uint8_t vout_fs_reg = 0;
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uint8_t buf[2] = {0};
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uint16_t idx;
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int ret;
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ret = i2c_reg_read_byte_dt(&config->i2c, TPS55287_REG_VOUT_FS, &vout_fs_reg);
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if (ret < 0) {
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return ret;
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}
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ret = i2c_burst_read_dt(&config->i2c, TPS55287_REG_REF, buf, sizeof(buf));
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if (ret < 0) {
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return ret;
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}
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vout_fs_reg &= TPS55287_REG_VOUT_FS_INTFB_MASK;
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idx = sys_get_be16(buf);
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ret = linear_range_get_value(&core_ranges[vout_fs_reg], idx, volt_uv);
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LOG_DBG("%s: Got voltage: %d uV (range %u, index %u)", dev->name, *volt_uv, vout_fs_reg,
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idx);
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return ret;
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}
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static int regulator_tps55287_enable(const struct device *dev)
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{
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const struct regulator_tps55287_config *config = dev->config;
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return i2c_reg_update_byte_dt(&config->i2c, TPS55287_REG_MODE, TPS55287_REG_MODE_OE,
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TPS55287_REG_MODE_OE);
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}
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static int regulator_tps55287_disable(const struct device *dev)
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{
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const struct regulator_tps55287_config *config = dev->config;
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return i2c_reg_update_byte_dt(&config->i2c, TPS55287_REG_MODE, TPS55287_REG_MODE_OE, 0);
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}
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static int regulator_tps55287_init(const struct device *dev)
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{
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int ret;
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regulator_common_data_init(dev);
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ret = regulator_common_init(dev, false);
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if (ret < 0) {
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LOG_ERR("%s: Failed to initialize regulator: %d", dev->name, ret);
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}
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return ret;
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}
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static DEVICE_API(regulator, api) = {
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.enable = regulator_tps55287_enable,
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.disable = regulator_tps55287_disable,
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.count_voltages = regulator_tps55287_count_voltages,
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.list_voltage = regulator_tps55287_list_voltage,
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.set_voltage = regulator_tps55287_set_voltage,
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.get_voltage = regulator_tps55287_get_voltage,
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};
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#define REGULATOR_TPS55287_DEFINE_ALL(inst) \
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static struct regulator_tps55287_data data_##inst; \
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\
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static const struct regulator_tps55287_config config_##inst = { \
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.common = REGULATOR_DT_INST_COMMON_CONFIG_INIT(inst), \
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.i2c = I2C_DT_SPEC_INST_GET(inst), \
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}; \
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\
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DEVICE_DT_INST_DEFINE(inst, regulator_tps55287_init, NULL, &data_##inst, &config_##inst, \
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POST_KERNEL, CONFIG_REGULATOR_TPS55287_INIT_PRIORITY, &api);
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DT_INST_FOREACH_STATUS_OKAY(REGULATOR_TPS55287_DEFINE_ALL)

‎dts/bindings/regulator/ti,tps55287.yaml‎

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# SPDX-FileCopyrightText: Copyright The Zephyr Project Contributors
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# SPDX-License-Identifier: Apache-2.0
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description: |
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TPS55287 core supply regulator
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compatible: "ti,tps55287"
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include:
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- name: i2c-device.yaml
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- name: regulator.yaml

‎tests/drivers/build_all/regulator/i2c.dtsi‎

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LDO2 {};
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};
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};
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tps55287@a {
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compatible = "ti,tps55287";
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reg = <0xa>;
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};

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