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-rw-r--r--drivers/st/pmic/stm32mp_pmic.c526
-rw-r--r--drivers/st/pmic/stpmic1.c937
2 files changed, 1463 insertions, 0 deletions
diff --git a/drivers/st/pmic/stm32mp_pmic.c b/drivers/st/pmic/stm32mp_pmic.c
new file mode 100644
index 0000000..5b43760
--- /dev/null
+++ b/drivers/st/pmic/stm32mp_pmic.c
@@ -0,0 +1,526 @@
+/*
+ * Copyright (c) 2017-2022, STMicroelectronics - All Rights Reserved
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <assert.h>
+#include <errno.h>
+
+#include <common/debug.h>
+#include <drivers/delay_timer.h>
+#include <drivers/st/regulator.h>
+#include <drivers/st/stm32_i2c.h>
+#include <drivers/st/stm32mp_pmic.h>
+#include <drivers/st/stpmic1.h>
+#include <lib/mmio.h>
+#include <lib/utils_def.h>
+#include <libfdt.h>
+
+#include <platform_def.h>
+
+#define PMIC_NODE_NOT_FOUND 1
+
+static struct i2c_handle_s i2c_handle;
+static uint32_t pmic_i2c_addr;
+
+static int register_pmic(void);
+
+static int dt_get_pmic_node(void *fdt)
+{
+ static int node = -FDT_ERR_BADOFFSET;
+
+ if (node == -FDT_ERR_BADOFFSET) {
+ node = fdt_node_offset_by_compatible(fdt, -1, "st,stpmic1");
+ }
+
+ return node;
+}
+
+int dt_pmic_status(void)
+{
+ static int status = -FDT_ERR_BADVALUE;
+ int node;
+ void *fdt;
+
+ if (status != -FDT_ERR_BADVALUE) {
+ return status;
+ }
+
+ if (fdt_get_address(&fdt) == 0) {
+ return -ENOENT;
+ }
+
+ node = dt_get_pmic_node(fdt);
+ if (node <= 0) {
+ status = -FDT_ERR_NOTFOUND;
+
+ return status;
+ }
+
+ status = (int)fdt_get_status(node);
+
+ return status;
+}
+
+static bool dt_pmic_is_secure(void)
+{
+ int status = dt_pmic_status();
+
+ return (status >= 0) &&
+ (status == DT_SECURE) &&
+ (i2c_handle.dt_status == DT_SECURE);
+}
+
+/*
+ * Get PMIC and its I2C bus configuration from the device tree.
+ * Return 0 on success, negative on error, 1 if no PMIC node is defined.
+ */
+static int dt_pmic_i2c_config(struct dt_node_info *i2c_info,
+ struct stm32_i2c_init_s *init)
+{
+ static int i2c_node = -FDT_ERR_NOTFOUND;
+ void *fdt;
+
+ if (fdt_get_address(&fdt) == 0) {
+ return -FDT_ERR_NOTFOUND;
+ }
+
+ if (i2c_node == -FDT_ERR_NOTFOUND) {
+ int pmic_node;
+ const fdt32_t *cuint;
+
+ pmic_node = dt_get_pmic_node(fdt);
+ if (pmic_node < 0) {
+ return PMIC_NODE_NOT_FOUND;
+ }
+
+ cuint = fdt_getprop(fdt, pmic_node, "reg", NULL);
+ if (cuint == NULL) {
+ return -FDT_ERR_NOTFOUND;
+ }
+
+ pmic_i2c_addr = fdt32_to_cpu(*cuint) << 1;
+ if (pmic_i2c_addr > UINT16_MAX) {
+ return -FDT_ERR_BADVALUE;
+ }
+
+ i2c_node = fdt_parent_offset(fdt, pmic_node);
+ if (i2c_node < 0) {
+ return -FDT_ERR_NOTFOUND;
+ }
+ }
+
+ dt_fill_device_info(i2c_info, i2c_node);
+ if (i2c_info->base == 0U) {
+ return -FDT_ERR_NOTFOUND;
+ }
+
+ return stm32_i2c_get_setup_from_fdt(fdt, i2c_node, init);
+}
+
+bool initialize_pmic_i2c(void)
+{
+ int ret;
+ struct dt_node_info i2c_info;
+ struct i2c_handle_s *i2c = &i2c_handle;
+ struct stm32_i2c_init_s i2c_init;
+
+ ret = dt_pmic_i2c_config(&i2c_info, &i2c_init);
+ if (ret < 0) {
+ ERROR("I2C configuration failed %d\n", ret);
+ panic();
+ }
+
+ if (ret != 0) {
+ return false;
+ }
+
+ /* Initialize PMIC I2C */
+ i2c->i2c_base_addr = i2c_info.base;
+ i2c->dt_status = i2c_info.status;
+ i2c->clock = i2c_info.clock;
+ i2c->i2c_state = I2C_STATE_RESET;
+ i2c_init.own_address1 = pmic_i2c_addr;
+ i2c_init.addressing_mode = I2C_ADDRESSINGMODE_7BIT;
+ i2c_init.dual_address_mode = I2C_DUALADDRESS_DISABLE;
+ i2c_init.own_address2 = 0;
+ i2c_init.own_address2_masks = I2C_OAR2_OA2NOMASK;
+ i2c_init.general_call_mode = I2C_GENERALCALL_DISABLE;
+ i2c_init.no_stretch_mode = I2C_NOSTRETCH_DISABLE;
+ i2c_init.analog_filter = 1;
+ i2c_init.digital_filter_coef = 0;
+
+ ret = stm32_i2c_init(i2c, &i2c_init);
+ if (ret != 0) {
+ ERROR("Cannot initialize I2C %x (%d)\n",
+ i2c->i2c_base_addr, ret);
+ panic();
+ }
+
+ if (!stm32_i2c_is_device_ready(i2c, pmic_i2c_addr, 1,
+ I2C_TIMEOUT_BUSY_MS)) {
+ ERROR("I2C device not ready\n");
+ panic();
+ }
+
+ stpmic1_bind_i2c(i2c, (uint16_t)pmic_i2c_addr);
+
+ return true;
+}
+
+static void register_pmic_shared_peripherals(void)
+{
+ uintptr_t i2c_base = i2c_handle.i2c_base_addr;
+
+ if (dt_pmic_is_secure()) {
+ stm32mp_register_secure_periph_iomem(i2c_base);
+ } else {
+ if (i2c_base != 0U) {
+ stm32mp_register_non_secure_periph_iomem(i2c_base);
+ }
+ }
+}
+
+void initialize_pmic(void)
+{
+ if (!initialize_pmic_i2c()) {
+ VERBOSE("No PMIC\n");
+ return;
+ }
+
+ register_pmic_shared_peripherals();
+
+ if (register_pmic() < 0) {
+ panic();
+ }
+
+ if (stpmic1_powerctrl_on() < 0) {
+ panic();
+ }
+
+}
+
+#if DEBUG
+void print_pmic_info_and_debug(void)
+{
+ unsigned long pmic_version;
+
+ if (stpmic1_get_version(&pmic_version) != 0) {
+ ERROR("Failed to access PMIC\n");
+ panic();
+ }
+
+ INFO("PMIC version = 0x%02lx\n", pmic_version);
+}
+#endif
+
+int pmic_ddr_power_init(enum ddr_type ddr_type)
+{
+ int status;
+ uint16_t buck3_min_mv;
+ struct rdev *buck2, *buck3, *vref;
+ struct rdev *ldo3 __unused;
+
+ buck2 = regulator_get_by_name("buck2");
+ if (buck2 == NULL) {
+ return -ENOENT;
+ }
+
+#if STM32MP15
+ ldo3 = regulator_get_by_name("ldo3");
+ if (ldo3 == NULL) {
+ return -ENOENT;
+ }
+#endif
+
+ vref = regulator_get_by_name("vref_ddr");
+ if (vref == NULL) {
+ return -ENOENT;
+ }
+
+ switch (ddr_type) {
+ case STM32MP_DDR3:
+#if STM32MP15
+ status = regulator_set_flag(ldo3, REGUL_SINK_SOURCE);
+ if (status != 0) {
+ return status;
+ }
+#endif
+
+ status = regulator_set_min_voltage(buck2);
+ if (status != 0) {
+ return status;
+ }
+
+ status = regulator_enable(buck2);
+ if (status != 0) {
+ return status;
+ }
+
+ status = regulator_enable(vref);
+ if (status != 0) {
+ return status;
+ }
+
+#if STM32MP15
+ status = regulator_enable(ldo3);
+ if (status != 0) {
+ return status;
+ }
+#endif
+ break;
+
+ case STM32MP_LPDDR2:
+ case STM32MP_LPDDR3:
+ /*
+ * Set LDO3 to 1.8V
+ * Set LDO3 to bypass mode if BUCK3 = 1.8V
+ * Set LDO3 to normal mode if BUCK3 != 1.8V
+ */
+ buck3 = regulator_get_by_name("buck3");
+ if (buck3 == NULL) {
+ return -ENOENT;
+ }
+
+ regulator_get_range(buck3, &buck3_min_mv, NULL);
+
+#if STM32MP15
+ if (buck3_min_mv != 1800) {
+ status = regulator_set_min_voltage(ldo3);
+ if (status != 0) {
+ return status;
+ }
+ } else {
+ status = regulator_set_flag(ldo3, REGUL_ENABLE_BYPASS);
+ if (status != 0) {
+ return status;
+ }
+ }
+#endif
+
+ status = regulator_set_min_voltage(buck2);
+ if (status != 0) {
+ return status;
+ }
+
+#if STM32MP15
+ status = regulator_enable(ldo3);
+ if (status != 0) {
+ return status;
+ }
+#endif
+
+ status = regulator_enable(buck2);
+ if (status != 0) {
+ return status;
+ }
+
+ status = regulator_enable(vref);
+ if (status != 0) {
+ return status;
+ }
+ break;
+
+ default:
+ break;
+ };
+
+ return 0;
+}
+
+int pmic_voltages_init(void)
+{
+#if STM32MP13
+ struct rdev *buck1, *buck4;
+ int status;
+
+ buck1 = regulator_get_by_name("buck1");
+ if (buck1 == NULL) {
+ return -ENOENT;
+ }
+
+ buck4 = regulator_get_by_name("buck4");
+ if (buck4 == NULL) {
+ return -ENOENT;
+ }
+
+ status = regulator_set_min_voltage(buck1);
+ if (status != 0) {
+ return status;
+ }
+
+ status = regulator_set_min_voltage(buck4);
+ if (status != 0) {
+ return status;
+ }
+#endif
+
+ return 0;
+}
+
+enum {
+ STPMIC1_BUCK1 = 0,
+ STPMIC1_BUCK2,
+ STPMIC1_BUCK3,
+ STPMIC1_BUCK4,
+ STPMIC1_LDO1,
+ STPMIC1_LDO2,
+ STPMIC1_LDO3,
+ STPMIC1_LDO4,
+ STPMIC1_LDO5,
+ STPMIC1_LDO6,
+ STPMIC1_VREF_DDR,
+ STPMIC1_BOOST,
+ STPMIC1_VBUS_OTG,
+ STPMIC1_SW_OUT,
+};
+
+static int pmic_set_state(const struct regul_description *desc, bool enable)
+{
+ VERBOSE("%s: set state to %d\n", desc->node_name, enable);
+
+ if (enable == STATE_ENABLE) {
+ return stpmic1_regulator_enable(desc->node_name);
+ } else {
+ return stpmic1_regulator_disable(desc->node_name);
+ }
+}
+
+static int pmic_get_state(const struct regul_description *desc)
+{
+ VERBOSE("%s: get state\n", desc->node_name);
+
+ return stpmic1_is_regulator_enabled(desc->node_name);
+}
+
+static int pmic_get_voltage(const struct regul_description *desc)
+{
+ VERBOSE("%s: get volt\n", desc->node_name);
+
+ return stpmic1_regulator_voltage_get(desc->node_name);
+}
+
+static int pmic_set_voltage(const struct regul_description *desc, uint16_t mv)
+{
+ VERBOSE("%s: get volt\n", desc->node_name);
+
+ return stpmic1_regulator_voltage_set(desc->node_name, mv);
+}
+
+static int pmic_list_voltages(const struct regul_description *desc,
+ const uint16_t **levels, size_t *count)
+{
+ VERBOSE("%s: list volt\n", desc->node_name);
+
+ return stpmic1_regulator_levels_mv(desc->node_name, levels, count);
+}
+
+static int pmic_set_flag(const struct regul_description *desc, uint16_t flag)
+{
+ VERBOSE("%s: set_flag 0x%x\n", desc->node_name, flag);
+
+ switch (flag) {
+ case REGUL_OCP:
+ return stpmic1_regulator_icc_set(desc->node_name);
+
+ case REGUL_ACTIVE_DISCHARGE:
+ return stpmic1_active_discharge_mode_set(desc->node_name);
+
+ case REGUL_PULL_DOWN:
+ return stpmic1_regulator_pull_down_set(desc->node_name);
+
+ case REGUL_MASK_RESET:
+ return stpmic1_regulator_mask_reset_set(desc->node_name);
+
+ case REGUL_SINK_SOURCE:
+ return stpmic1_regulator_sink_mode_set(desc->node_name);
+
+ case REGUL_ENABLE_BYPASS:
+ return stpmic1_regulator_bypass_mode_set(desc->node_name);
+
+ default:
+ return -EINVAL;
+ }
+}
+
+static const struct regul_ops pmic_ops = {
+ .set_state = pmic_set_state,
+ .get_state = pmic_get_state,
+ .set_voltage = pmic_set_voltage,
+ .get_voltage = pmic_get_voltage,
+ .list_voltages = pmic_list_voltages,
+ .set_flag = pmic_set_flag,
+};
+
+#define DEFINE_REGU(name) { \
+ .node_name = name, \
+ .ops = &pmic_ops, \
+ .driver_data = NULL, \
+ .enable_ramp_delay = 1000, \
+}
+
+static const struct regul_description pmic_regs[] = {
+ [STPMIC1_BUCK1] = DEFINE_REGU("buck1"),
+ [STPMIC1_BUCK2] = DEFINE_REGU("buck2"),
+ [STPMIC1_BUCK3] = DEFINE_REGU("buck3"),
+ [STPMIC1_BUCK4] = DEFINE_REGU("buck4"),
+ [STPMIC1_LDO1] = DEFINE_REGU("ldo1"),
+ [STPMIC1_LDO2] = DEFINE_REGU("ldo2"),
+ [STPMIC1_LDO3] = DEFINE_REGU("ldo3"),
+ [STPMIC1_LDO4] = DEFINE_REGU("ldo4"),
+ [STPMIC1_LDO5] = DEFINE_REGU("ldo5"),
+ [STPMIC1_LDO6] = DEFINE_REGU("ldo6"),
+ [STPMIC1_VREF_DDR] = DEFINE_REGU("vref_ddr"),
+ [STPMIC1_BOOST] = DEFINE_REGU("boost"),
+ [STPMIC1_VBUS_OTG] = DEFINE_REGU("pwr_sw1"),
+ [STPMIC1_SW_OUT] = DEFINE_REGU("pwr_sw2"),
+};
+
+#define NB_REG ARRAY_SIZE(pmic_regs)
+
+static int register_pmic(void)
+{
+ void *fdt;
+ int pmic_node, regulators_node, subnode;
+
+ VERBOSE("Register pmic\n");
+
+ if (fdt_get_address(&fdt) == 0) {
+ return -FDT_ERR_NOTFOUND;
+ }
+
+ pmic_node = dt_get_pmic_node(fdt);
+ if (pmic_node < 0) {
+ return pmic_node;
+ }
+
+ regulators_node = fdt_subnode_offset(fdt, pmic_node, "regulators");
+ if (regulators_node < 0) {
+ return -ENOENT;
+ }
+
+ fdt_for_each_subnode(subnode, fdt, regulators_node) {
+ const char *reg_name = fdt_get_name(fdt, subnode, NULL);
+ const struct regul_description *desc;
+ unsigned int i;
+ int ret;
+
+ for (i = 0; i < NB_REG; i++) {
+ desc = &pmic_regs[i];
+ if (strcmp(desc->node_name, reg_name) == 0) {
+ break;
+ }
+ }
+ assert(i < NB_REG);
+
+ ret = regulator_register(desc, subnode);
+ if (ret != 0) {
+ WARN("%s:%d failed to register %s\n", __func__,
+ __LINE__, reg_name);
+ return ret;
+ }
+ }
+
+ return 0;
+}
diff --git a/drivers/st/pmic/stpmic1.c b/drivers/st/pmic/stpmic1.c
new file mode 100644
index 0000000..37eb50b
--- /dev/null
+++ b/drivers/st/pmic/stpmic1.c
@@ -0,0 +1,937 @@
+/*
+ * Copyright (c) 2016-2021, STMicroelectronics - All Rights Reserved
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <errno.h>
+#include <string.h>
+
+#include <common/debug.h>
+#include <drivers/st/stpmic1.h>
+
+#define I2C_TIMEOUT_MS 25
+
+struct regul_struct {
+ const char *dt_node_name;
+ const uint16_t *voltage_table;
+ uint8_t voltage_table_size;
+ uint8_t control_reg;
+ uint8_t enable_mask;
+ uint8_t low_power_reg;
+ uint8_t pull_down_reg;
+ uint8_t pull_down;
+ uint8_t mask_reset_reg;
+ uint8_t mask_reset;
+ uint8_t icc_reg;
+ uint8_t icc_mask;
+};
+
+static struct i2c_handle_s *pmic_i2c_handle;
+static uint16_t pmic_i2c_addr;
+/*
+ * Special mode corresponds to LDO3 in sink source mode or in bypass mode.
+ * LDO3 doesn't switch back from special to normal mode.
+ */
+static bool ldo3_special_mode;
+
+/* Voltage tables in mV */
+static const uint16_t buck1_voltage_table[] = {
+ 725,
+ 725,
+ 725,
+ 725,
+ 725,
+ 725,
+ 750,
+ 775,
+ 800,
+ 825,
+ 850,
+ 875,
+ 900,
+ 925,
+ 950,
+ 975,
+ 1000,
+ 1025,
+ 1050,
+ 1075,
+ 1100,
+ 1125,
+ 1150,
+ 1175,
+ 1200,
+ 1225,
+ 1250,
+ 1275,
+ 1300,
+ 1325,
+ 1350,
+ 1375,
+ 1400,
+ 1425,
+ 1450,
+ 1475,
+ 1500,
+ 1500,
+ 1500,
+ 1500,
+ 1500,
+ 1500,
+ 1500,
+ 1500,
+ 1500,
+ 1500,
+ 1500,
+ 1500,
+ 1500,
+ 1500,
+ 1500,
+ 1500,
+ 1500,
+ 1500,
+ 1500,
+ 1500,
+ 1500,
+ 1500,
+ 1500,
+ 1500,
+ 1500,
+ 1500,
+ 1500,
+ 1500,
+};
+
+static const uint16_t buck2_voltage_table[] = {
+ 1000,
+ 1000,
+ 1000,
+ 1000,
+ 1000,
+ 1000,
+ 1000,
+ 1000,
+ 1000,
+ 1000,
+ 1000,
+ 1000,
+ 1000,
+ 1000,
+ 1000,
+ 1000,
+ 1000,
+ 1000,
+ 1050,
+ 1050,
+ 1100,
+ 1100,
+ 1150,
+ 1150,
+ 1200,
+ 1200,
+ 1250,
+ 1250,
+ 1300,
+ 1300,
+ 1350,
+ 1350,
+ 1400,
+ 1400,
+ 1450,
+ 1450,
+ 1500,
+};
+
+static const uint16_t buck3_voltage_table[] = {
+ 1000,
+ 1000,
+ 1000,
+ 1000,
+ 1000,
+ 1000,
+ 1000,
+ 1000,
+ 1000,
+ 1000,
+ 1000,
+ 1000,
+ 1000,
+ 1000,
+ 1000,
+ 1000,
+ 1000,
+ 1000,
+ 1000,
+ 1000,
+ 1100,
+ 1100,
+ 1100,
+ 1100,
+ 1200,
+ 1200,
+ 1200,
+ 1200,
+ 1300,
+ 1300,
+ 1300,
+ 1300,
+ 1400,
+ 1400,
+ 1400,
+ 1400,
+ 1500,
+ 1600,
+ 1700,
+ 1800,
+ 1900,
+ 2000,
+ 2100,
+ 2200,
+ 2300,
+ 2400,
+ 2500,
+ 2600,
+ 2700,
+ 2800,
+ 2900,
+ 3000,
+ 3100,
+ 3200,
+ 3300,
+ 3400,
+};
+
+static const uint16_t buck4_voltage_table[] = {
+ 600,
+ 625,
+ 650,
+ 675,
+ 700,
+ 725,
+ 750,
+ 775,
+ 800,
+ 825,
+ 850,
+ 875,
+ 900,
+ 925,
+ 950,
+ 975,
+ 1000,
+ 1025,
+ 1050,
+ 1075,
+ 1100,
+ 1125,
+ 1150,
+ 1175,
+ 1200,
+ 1225,
+ 1250,
+ 1275,
+ 1300,
+ 1300,
+ 1350,
+ 1350,
+ 1400,
+ 1400,
+ 1450,
+ 1450,
+ 1500,
+ 1600,
+ 1700,
+ 1800,
+ 1900,
+ 2000,
+ 2100,
+ 2200,
+ 2300,
+ 2400,
+ 2500,
+ 2600,
+ 2700,
+ 2800,
+ 2900,
+ 3000,
+ 3100,
+ 3200,
+ 3300,
+ 3400,
+ 3500,
+ 3600,
+ 3700,
+ 3800,
+ 3900,
+};
+
+static const uint16_t ldo1_voltage_table[] = {
+ 1700,
+ 1700,
+ 1700,
+ 1700,
+ 1700,
+ 1700,
+ 1700,
+ 1700,
+ 1700,
+ 1800,
+ 1900,
+ 2000,
+ 2100,
+ 2200,
+ 2300,
+ 2400,
+ 2500,
+ 2600,
+ 2700,
+ 2800,
+ 2900,
+ 3000,
+ 3100,
+ 3200,
+ 3300,
+};
+
+static const uint16_t ldo2_voltage_table[] = {
+ 1700,
+ 1700,
+ 1700,
+ 1700,
+ 1700,
+ 1700,
+ 1700,
+ 1700,
+ 1700,
+ 1800,
+ 1900,
+ 2000,
+ 2100,
+ 2200,
+ 2300,
+ 2400,
+ 2500,
+ 2600,
+ 2700,
+ 2800,
+ 2900,
+ 3000,
+ 3100,
+ 3200,
+ 3300,
+};
+
+static const uint16_t ldo3_voltage_table[] = {
+ 1700,
+ 1700,
+ 1700,
+ 1700,
+ 1700,
+ 1700,
+ 1700,
+ 1700,
+ 1700,
+ 1800,
+ 1900,
+ 2000,
+ 2100,
+ 2200,
+ 2300,
+ 2400,
+ 2500,
+ 2600,
+ 2700,
+ 2800,
+ 2900,
+ 3000,
+ 3100,
+ 3200,
+ 3300,
+ 3300,
+ 3300,
+ 3300,
+ 3300,
+ 3300,
+ 3300,
+};
+
+/* Special mode table is used for sink source OR bypass mode */
+static const uint16_t ldo3_special_mode_table[] = {
+ 0,
+};
+
+static const uint16_t ldo5_voltage_table[] = {
+ 1700,
+ 1700,
+ 1700,
+ 1700,
+ 1700,
+ 1700,
+ 1700,
+ 1700,
+ 1700,
+ 1800,
+ 1900,
+ 2000,
+ 2100,
+ 2200,
+ 2300,
+ 2400,
+ 2500,
+ 2600,
+ 2700,
+ 2800,
+ 2900,
+ 3000,
+ 3100,
+ 3200,
+ 3300,
+ 3400,
+ 3500,
+ 3600,
+ 3700,
+ 3800,
+ 3900,
+};
+
+static const uint16_t ldo6_voltage_table[] = {
+ 900,
+ 1000,
+ 1100,
+ 1200,
+ 1300,
+ 1400,
+ 1500,
+ 1600,
+ 1700,
+ 1800,
+ 1900,
+ 2000,
+ 2100,
+ 2200,
+ 2300,
+ 2400,
+ 2500,
+ 2600,
+ 2700,
+ 2800,
+ 2900,
+ 3000,
+ 3100,
+ 3200,
+ 3300,
+};
+
+static const uint16_t ldo4_voltage_table[] = {
+ 3300,
+};
+
+static const uint16_t vref_ddr_voltage_table[] = {
+ 3300,
+};
+
+static const uint16_t fixed_5v_voltage_table[] = {
+ 5000,
+};
+
+/* Table of Regulators in PMIC SoC */
+static const struct regul_struct regulators_table[] = {
+ {
+ .dt_node_name = "buck1",
+ .voltage_table = buck1_voltage_table,
+ .voltage_table_size = ARRAY_SIZE(buck1_voltage_table),
+ .control_reg = BUCK1_CONTROL_REG,
+ .enable_mask = LDO_BUCK_ENABLE_MASK,
+ .low_power_reg = BUCK1_PWRCTRL_REG,
+ .pull_down_reg = BUCK_PULL_DOWN_REG,
+ .pull_down = BUCK1_PULL_DOWN_SHIFT,
+ .mask_reset_reg = MASK_RESET_BUCK_REG,
+ .mask_reset = BUCK1_MASK_RESET,
+ .icc_reg = BUCK_ICC_TURNOFF_REG,
+ .icc_mask = BUCK1_ICC_SHIFT,
+ },
+ {
+ .dt_node_name = "buck2",
+ .voltage_table = buck2_voltage_table,
+ .voltage_table_size = ARRAY_SIZE(buck2_voltage_table),
+ .control_reg = BUCK2_CONTROL_REG,
+ .enable_mask = LDO_BUCK_ENABLE_MASK,
+ .low_power_reg = BUCK2_PWRCTRL_REG,
+ .pull_down_reg = BUCK_PULL_DOWN_REG,
+ .pull_down = BUCK2_PULL_DOWN_SHIFT,
+ .mask_reset_reg = MASK_RESET_BUCK_REG,
+ .mask_reset = BUCK2_MASK_RESET,
+ .icc_reg = BUCK_ICC_TURNOFF_REG,
+ .icc_mask = BUCK2_ICC_SHIFT,
+ },
+ {
+ .dt_node_name = "buck3",
+ .voltage_table = buck3_voltage_table,
+ .voltage_table_size = ARRAY_SIZE(buck3_voltage_table),
+ .control_reg = BUCK3_CONTROL_REG,
+ .enable_mask = LDO_BUCK_ENABLE_MASK,
+ .low_power_reg = BUCK3_PWRCTRL_REG,
+ .pull_down_reg = BUCK_PULL_DOWN_REG,
+ .pull_down = BUCK3_PULL_DOWN_SHIFT,
+ .mask_reset_reg = MASK_RESET_BUCK_REG,
+ .mask_reset = BUCK3_MASK_RESET,
+ .icc_reg = BUCK_ICC_TURNOFF_REG,
+ .icc_mask = BUCK3_ICC_SHIFT,
+ },
+ {
+ .dt_node_name = "buck4",
+ .voltage_table = buck4_voltage_table,
+ .voltage_table_size = ARRAY_SIZE(buck4_voltage_table),
+ .control_reg = BUCK4_CONTROL_REG,
+ .enable_mask = LDO_BUCK_ENABLE_MASK,
+ .low_power_reg = BUCK4_PWRCTRL_REG,
+ .pull_down_reg = BUCK_PULL_DOWN_REG,
+ .pull_down = BUCK4_PULL_DOWN_SHIFT,
+ .mask_reset_reg = MASK_RESET_BUCK_REG,
+ .mask_reset = BUCK4_MASK_RESET,
+ .icc_reg = BUCK_ICC_TURNOFF_REG,
+ .icc_mask = BUCK4_ICC_SHIFT,
+ },
+ {
+ .dt_node_name = "ldo1",
+ .voltage_table = ldo1_voltage_table,
+ .voltage_table_size = ARRAY_SIZE(ldo1_voltage_table),
+ .control_reg = LDO1_CONTROL_REG,
+ .enable_mask = LDO_BUCK_ENABLE_MASK,
+ .low_power_reg = LDO1_PWRCTRL_REG,
+ .mask_reset_reg = MASK_RESET_LDO_REG,
+ .mask_reset = LDO1_MASK_RESET,
+ .icc_reg = LDO_ICC_TURNOFF_REG,
+ .icc_mask = LDO1_ICC_SHIFT,
+ },
+ {
+ .dt_node_name = "ldo2",
+ .voltage_table = ldo2_voltage_table,
+ .voltage_table_size = ARRAY_SIZE(ldo2_voltage_table),
+ .control_reg = LDO2_CONTROL_REG,
+ .enable_mask = LDO_BUCK_ENABLE_MASK,
+ .low_power_reg = LDO2_PWRCTRL_REG,
+ .mask_reset_reg = MASK_RESET_LDO_REG,
+ .mask_reset = LDO2_MASK_RESET,
+ .icc_reg = LDO_ICC_TURNOFF_REG,
+ .icc_mask = LDO2_ICC_SHIFT,
+ },
+ {
+ .dt_node_name = "ldo3",
+ .voltage_table = ldo3_voltage_table,
+ .voltage_table_size = ARRAY_SIZE(ldo3_voltage_table),
+ .control_reg = LDO3_CONTROL_REG,
+ .enable_mask = LDO_BUCK_ENABLE_MASK,
+ .low_power_reg = LDO3_PWRCTRL_REG,
+ .mask_reset_reg = MASK_RESET_LDO_REG,
+ .mask_reset = LDO3_MASK_RESET,
+ .icc_reg = LDO_ICC_TURNOFF_REG,
+ .icc_mask = LDO3_ICC_SHIFT,
+ },
+ {
+ .dt_node_name = "ldo4",
+ .voltage_table = ldo4_voltage_table,
+ .voltage_table_size = ARRAY_SIZE(ldo4_voltage_table),
+ .control_reg = LDO4_CONTROL_REG,
+ .enable_mask = LDO_BUCK_ENABLE_MASK,
+ .low_power_reg = LDO4_PWRCTRL_REG,
+ .mask_reset_reg = MASK_RESET_LDO_REG,
+ .mask_reset = LDO4_MASK_RESET,
+ .icc_reg = LDO_ICC_TURNOFF_REG,
+ .icc_mask = LDO4_ICC_SHIFT,
+ },
+ {
+ .dt_node_name = "ldo5",
+ .voltage_table = ldo5_voltage_table,
+ .voltage_table_size = ARRAY_SIZE(ldo5_voltage_table),
+ .control_reg = LDO5_CONTROL_REG,
+ .enable_mask = LDO_BUCK_ENABLE_MASK,
+ .low_power_reg = LDO5_PWRCTRL_REG,
+ .mask_reset_reg = MASK_RESET_LDO_REG,
+ .mask_reset = LDO5_MASK_RESET,
+ .icc_reg = LDO_ICC_TURNOFF_REG,
+ .icc_mask = LDO5_ICC_SHIFT,
+ },
+ {
+ .dt_node_name = "ldo6",
+ .voltage_table = ldo6_voltage_table,
+ .voltage_table_size = ARRAY_SIZE(ldo6_voltage_table),
+ .control_reg = LDO6_CONTROL_REG,
+ .enable_mask = LDO_BUCK_ENABLE_MASK,
+ .low_power_reg = LDO6_PWRCTRL_REG,
+ .mask_reset_reg = MASK_RESET_LDO_REG,
+ .mask_reset = LDO6_MASK_RESET,
+ .icc_reg = LDO_ICC_TURNOFF_REG,
+ .icc_mask = LDO6_ICC_SHIFT,
+ },
+ {
+ .dt_node_name = "vref_ddr",
+ .voltage_table = vref_ddr_voltage_table,
+ .voltage_table_size = ARRAY_SIZE(vref_ddr_voltage_table),
+ .control_reg = VREF_DDR_CONTROL_REG,
+ .enable_mask = LDO_BUCK_ENABLE_MASK,
+ .low_power_reg = VREF_DDR_PWRCTRL_REG,
+ .mask_reset_reg = MASK_RESET_LDO_REG,
+ .mask_reset = VREF_DDR_MASK_RESET,
+ },
+ {
+ .dt_node_name = "boost",
+ .voltage_table = fixed_5v_voltage_table,
+ .voltage_table_size = ARRAY_SIZE(fixed_5v_voltage_table),
+ .control_reg = USB_CONTROL_REG,
+ .enable_mask = BOOST_ENABLED,
+ .icc_reg = BUCK_ICC_TURNOFF_REG,
+ .icc_mask = BOOST_ICC_SHIFT,
+ },
+ {
+ .dt_node_name = "pwr_sw1",
+ .voltage_table = fixed_5v_voltage_table,
+ .voltage_table_size = ARRAY_SIZE(fixed_5v_voltage_table),
+ .control_reg = USB_CONTROL_REG,
+ .enable_mask = USBSW_OTG_SWITCH_ENABLED,
+ .icc_reg = BUCK_ICC_TURNOFF_REG,
+ .icc_mask = PWR_SW1_ICC_SHIFT,
+ },
+ {
+ .dt_node_name = "pwr_sw2",
+ .voltage_table = fixed_5v_voltage_table,
+ .voltage_table_size = ARRAY_SIZE(fixed_5v_voltage_table),
+ .control_reg = USB_CONTROL_REG,
+ .enable_mask = SWIN_SWOUT_ENABLED,
+ .icc_reg = BUCK_ICC_TURNOFF_REG,
+ .icc_mask = PWR_SW2_ICC_SHIFT,
+ },
+};
+
+#define MAX_REGUL ARRAY_SIZE(regulators_table)
+
+static const struct regul_struct *get_regulator_data(const char *name)
+{
+ uint8_t i;
+
+ for (i = 0 ; i < MAX_REGUL ; i++) {
+ if (strncmp(name, regulators_table[i].dt_node_name,
+ strlen(regulators_table[i].dt_node_name)) == 0) {
+ return &regulators_table[i];
+ }
+ }
+
+ /* Regulator not found */
+ panic();
+ return NULL;
+}
+
+static uint8_t voltage_to_index(const char *name, uint16_t millivolts)
+{
+ const struct regul_struct *regul = get_regulator_data(name);
+ uint8_t i;
+
+ for (i = 0 ; i < regul->voltage_table_size ; i++) {
+ if (regul->voltage_table[i] == millivolts) {
+ return i;
+ }
+ }
+
+ /* Voltage not found */
+ panic();
+
+ return 0;
+}
+
+int stpmic1_powerctrl_on(void)
+{
+ return stpmic1_register_update(MAIN_CONTROL_REG, PWRCTRL_PIN_VALID,
+ PWRCTRL_PIN_VALID);
+}
+
+int stpmic1_switch_off(void)
+{
+ return stpmic1_register_update(MAIN_CONTROL_REG, 1,
+ SOFTWARE_SWITCH_OFF_ENABLED);
+}
+
+int stpmic1_regulator_enable(const char *name)
+{
+ const struct regul_struct *regul = get_regulator_data(name);
+
+ return stpmic1_register_update(regul->control_reg, regul->enable_mask,
+ regul->enable_mask);
+}
+
+int stpmic1_regulator_disable(const char *name)
+{
+ const struct regul_struct *regul = get_regulator_data(name);
+
+ return stpmic1_register_update(regul->control_reg, 0,
+ regul->enable_mask);
+}
+
+bool stpmic1_is_regulator_enabled(const char *name)
+{
+ uint8_t val;
+ const struct regul_struct *regul = get_regulator_data(name);
+
+ if (stpmic1_register_read(regul->control_reg, &val) != 0) {
+ panic();
+ }
+
+ return (val & regul->enable_mask) == regul->enable_mask;
+}
+
+int stpmic1_regulator_voltage_set(const char *name, uint16_t millivolts)
+{
+ uint8_t voltage_index = voltage_to_index(name, millivolts);
+ const struct regul_struct *regul = get_regulator_data(name);
+ uint8_t mask;
+
+ if ((strncmp(name, "ldo3", 5) == 0) && ldo3_special_mode) {
+ /*
+ * when the LDO3 is in special mode, we do not change voltage,
+ * because by setting voltage, the LDO would leaves sink-source
+ * mode. There is obviously no reason to leave sink-source mode
+ * at runtime.
+ */
+ return 0;
+ }
+
+ /* Voltage can be set for buck<N> or ldo<N> (except ldo4) regulators */
+ if (strncmp(name, "buck", 4) == 0) {
+ mask = BUCK_VOLTAGE_MASK;
+ } else if ((strncmp(name, "ldo", 3) == 0) &&
+ (strncmp(name, "ldo4", 5) != 0)) {
+ mask = LDO_VOLTAGE_MASK;
+ } else {
+ return 0;
+ }
+
+ return stpmic1_register_update(regul->control_reg,
+ voltage_index << LDO_BUCK_VOLTAGE_SHIFT,
+ mask);
+}
+
+int stpmic1_regulator_pull_down_set(const char *name)
+{
+ const struct regul_struct *regul = get_regulator_data(name);
+
+ if (regul->pull_down_reg != 0) {
+ return stpmic1_register_update(regul->pull_down_reg,
+ BIT(regul->pull_down),
+ LDO_BUCK_PULL_DOWN_MASK <<
+ regul->pull_down);
+ }
+
+ return 0;
+}
+
+int stpmic1_regulator_mask_reset_set(const char *name)
+{
+ const struct regul_struct *regul = get_regulator_data(name);
+
+ if (regul->mask_reset_reg == 0U) {
+ return -EPERM;
+ }
+
+ return stpmic1_register_update(regul->mask_reset_reg,
+ BIT(regul->mask_reset),
+ LDO_BUCK_RESET_MASK <<
+ regul->mask_reset);
+}
+
+int stpmic1_regulator_icc_set(const char *name)
+{
+ const struct regul_struct *regul = get_regulator_data(name);
+
+ if (regul->mask_reset_reg == 0U) {
+ return -EPERM;
+ }
+
+ return stpmic1_register_update(regul->icc_reg,
+ BIT(regul->icc_mask),
+ BIT(regul->icc_mask));
+}
+
+int stpmic1_regulator_sink_mode_set(const char *name)
+{
+ if (strncmp(name, "ldo3", 5) != 0) {
+ return -EPERM;
+ }
+
+ ldo3_special_mode = true;
+
+ /* disable bypass mode, enable sink mode */
+ return stpmic1_register_update(LDO3_CONTROL_REG,
+ LDO3_DDR_SEL << LDO_BUCK_VOLTAGE_SHIFT,
+ LDO3_BYPASS | LDO_VOLTAGE_MASK);
+}
+
+int stpmic1_regulator_bypass_mode_set(const char *name)
+{
+ if (strncmp(name, "ldo3", 5) != 0) {
+ return -EPERM;
+ }
+
+ ldo3_special_mode = true;
+
+ /* enable bypass mode, disable sink mode */
+ return stpmic1_register_update(LDO3_CONTROL_REG,
+ LDO3_BYPASS,
+ LDO3_BYPASS | LDO_VOLTAGE_MASK);
+}
+
+int stpmic1_active_discharge_mode_set(const char *name)
+{
+ if (strncmp(name, "pwr_sw1", 8) == 0) {
+ return stpmic1_register_update(USB_CONTROL_REG,
+ VBUS_OTG_DISCHARGE,
+ VBUS_OTG_DISCHARGE);
+ }
+
+ if (strncmp(name, "pwr_sw2", 8) == 0) {
+ return stpmic1_register_update(USB_CONTROL_REG,
+ SW_OUT_DISCHARGE,
+ SW_OUT_DISCHARGE);
+ }
+
+ return -EPERM;
+}
+
+int stpmic1_regulator_levels_mv(const char *name, const uint16_t **levels,
+ size_t *levels_count)
+{
+ const struct regul_struct *regul = get_regulator_data(name);
+
+ if ((strncmp(name, "ldo3", 5) == 0) && ldo3_special_mode) {
+ *levels_count = ARRAY_SIZE(ldo3_special_mode_table);
+ *levels = ldo3_special_mode_table;
+ } else {
+ *levels_count = regul->voltage_table_size;
+ *levels = regul->voltage_table;
+ }
+
+ return 0;
+}
+
+int stpmic1_regulator_voltage_get(const char *name)
+{
+ const struct regul_struct *regul = get_regulator_data(name);
+ uint8_t value;
+ uint8_t mask;
+ int status;
+
+ if ((strncmp(name, "ldo3", 5) == 0) && ldo3_special_mode) {
+ return 0;
+ }
+
+ /* Voltage can be set for buck<N> or ldo<N> (except ldo4) regulators */
+ if (strncmp(name, "buck", 4) == 0) {
+ mask = BUCK_VOLTAGE_MASK;
+ } else if ((strncmp(name, "ldo", 3) == 0) &&
+ (strncmp(name, "ldo4", 5) != 0)) {
+ mask = LDO_VOLTAGE_MASK;
+ } else {
+ return 0;
+ }
+
+ status = stpmic1_register_read(regul->control_reg, &value);
+ if (status < 0) {
+ return status;
+ }
+
+ value = (value & mask) >> LDO_BUCK_VOLTAGE_SHIFT;
+
+ if (value > regul->voltage_table_size) {
+ return -ERANGE;
+ }
+
+ return (int)regul->voltage_table[value];
+}
+
+int stpmic1_register_read(uint8_t register_id, uint8_t *value)
+{
+ return stm32_i2c_mem_read(pmic_i2c_handle, pmic_i2c_addr,
+ (uint16_t)register_id,
+ I2C_MEMADD_SIZE_8BIT, value,
+ 1, I2C_TIMEOUT_MS);
+}
+
+int stpmic1_register_write(uint8_t register_id, uint8_t value)
+{
+ int status;
+
+ status = stm32_i2c_mem_write(pmic_i2c_handle, pmic_i2c_addr,
+ (uint16_t)register_id,
+ I2C_MEMADD_SIZE_8BIT, &value,
+ 1, I2C_TIMEOUT_MS);
+
+#if ENABLE_ASSERTIONS
+ if (status != 0) {
+ return status;
+ }
+
+ if ((register_id != WATCHDOG_CONTROL_REG) && (register_id <= 0x40U)) {
+ uint8_t readval;
+
+ status = stpmic1_register_read(register_id, &readval);
+ if (status != 0) {
+ return status;
+ }
+
+ if (readval != value) {
+ return -EIO;
+ }
+ }
+#endif
+
+ return status;
+}
+
+int stpmic1_register_update(uint8_t register_id, uint8_t value, uint8_t mask)
+{
+ int status;
+ uint8_t val;
+
+ status = stpmic1_register_read(register_id, &val);
+ if (status != 0) {
+ return status;
+ }
+
+ val = (val & ~mask) | (value & mask);
+
+ return stpmic1_register_write(register_id, val);
+}
+
+void stpmic1_bind_i2c(struct i2c_handle_s *i2c_handle, uint16_t i2c_addr)
+{
+ pmic_i2c_handle = i2c_handle;
+ pmic_i2c_addr = i2c_addr;
+}
+
+void stpmic1_dump_regulators(void)
+{
+ uint32_t i;
+
+ for (i = 0U; i < MAX_REGUL; i++) {
+ const char *name __unused = regulators_table[i].dt_node_name;
+
+ VERBOSE("PMIC regul %s: %sable, %dmV",
+ name,
+ stpmic1_is_regulator_enabled(name) ? "en" : "dis",
+ stpmic1_regulator_voltage_get(name));
+ }
+}
+
+int stpmic1_get_version(unsigned long *version)
+{
+ uint8_t read_val;
+ int status;
+
+ status = stpmic1_register_read(VERSION_STATUS_REG, &read_val);
+ if (status < 0) {
+ return status;
+ }
+
+ *version = (unsigned long)read_val;
+
+ return 0;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-15 09:56:28 +0000