// SPDX-License-Identifier: GPL-2.0 // Copyright (c) 2018-2021, The Linux Foundation. All rights reserved. // Copyright (c) 2023 Qualcomm Innovation Center, Inc. All rights reserved. #define pr_fmt(fmt) … #include <linux/err.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/of.h> #include <linux/platform_device.h> #include <linux/slab.h> #include <linux/string.h> #include <linux/regulator/driver.h> #include <linux/regulator/machine.h> #include <linux/regulator/of_regulator.h> #include <soc/qcom/cmd-db.h> #include <soc/qcom/rpmh.h> #include <dt-bindings/regulator/qcom,rpmh-regulator.h> /** * enum rpmh_regulator_type - supported RPMh accelerator types * @VRM: RPMh VRM accelerator which supports voting on enable, voltage, * and mode of LDO, SMPS, and BOB type PMIC regulators. * @XOB: RPMh XOB accelerator which supports voting on the enable state * of PMIC regulators. */ enum rpmh_regulator_type { … }; #define RPMH_REGULATOR_REG_VRM_VOLTAGE … #define RPMH_REGULATOR_REG_ENABLE … #define RPMH_REGULATOR_REG_VRM_MODE … #define PMIC4_LDO_MODE_RETENTION … #define PMIC4_LDO_MODE_LPM … #define PMIC4_LDO_MODE_HPM … #define PMIC4_SMPS_MODE_RETENTION … #define PMIC4_SMPS_MODE_PFM … #define PMIC4_SMPS_MODE_AUTO … #define PMIC4_SMPS_MODE_PWM … #define PMIC4_BOB_MODE_PASS … #define PMIC4_BOB_MODE_PFM … #define PMIC4_BOB_MODE_AUTO … #define PMIC4_BOB_MODE_PWM … #define PMIC5_LDO_MODE_RETENTION … #define PMIC5_LDO_MODE_LPM … #define PMIC5_LDO_MODE_HPM … #define PMIC5_SMPS_MODE_RETENTION … #define PMIC5_SMPS_MODE_PFM … #define PMIC5_SMPS_MODE_AUTO … #define PMIC5_SMPS_MODE_PWM … #define PMIC5_BOB_MODE_PASS … #define PMIC5_BOB_MODE_PFM … #define PMIC5_BOB_MODE_AUTO … #define PMIC5_BOB_MODE_PWM … /** * struct rpmh_vreg_hw_data - RPMh regulator hardware configurations * @regulator_type: RPMh accelerator type used to manage this * regulator * @ops: Pointer to regulator ops callback structure * @voltage_ranges: The possible ranges of voltages supported by this * PMIC regulator type * @n_linear_ranges: Number of entries in voltage_ranges * @n_voltages: The number of unique voltage set points defined * by voltage_ranges * @hpm_min_load_uA: Minimum load current in microamps that requires * high power mode (HPM) operation. This is used * for LDO hardware type regulators only. * @pmic_mode_map: Array indexed by regulator framework mode * containing PMIC hardware modes. Must be large * enough to index all framework modes supported * by this regulator hardware type. * @of_map_mode: Maps an RPMH_REGULATOR_MODE_* mode value defined * in device tree to a regulator framework mode */ struct rpmh_vreg_hw_data { … }; /** * struct rpmh_vreg - individual RPMh regulator data structure encapsulating a * single regulator device * @dev: Device pointer for the top-level PMIC RPMh * regulator parent device. This is used as a * handle in RPMh write requests. * @addr: Base address of the regulator resource within * an RPMh accelerator * @rdesc: Regulator descriptor * @hw_data: PMIC regulator configuration data for this RPMh * regulator * @always_wait_for_ack: Boolean flag indicating if a request must always * wait for an ACK from RPMh before continuing even * if it corresponds to a strictly lower power * state (e.g. enabled --> disabled). * @enabled: Flag indicating if the regulator is enabled or * not * @bypassed: Boolean indicating if the regulator is in * bypass (pass-through) mode or not. This is * only used by BOB rpmh-regulator resources. * @voltage_selector: Selector used for get_voltage_sel() and * set_voltage_sel() callbacks * @mode: RPMh VRM regulator current framework mode */ struct rpmh_vreg { … }; /** * struct rpmh_vreg_init_data - initialization data for an RPMh regulator * @name: Name for the regulator which also corresponds * to the device tree subnode name of the regulator * @resource_name: RPMh regulator resource name format string. * This must include exactly one field: '%s' which * is filled at run-time with the PMIC ID provided * by device tree property qcom,pmic-id. Example: * "ldo%s1" for RPMh resource "ldoa1". * @supply_name: Parent supply regulator name * @hw_data: Configuration data for this PMIC regulator type */ struct rpmh_vreg_init_data { … }; /** * rpmh_regulator_send_request() - send the request to RPMh * @vreg: Pointer to the RPMh regulator * @cmd: Pointer to the RPMh command to send * @wait_for_ack: Boolean indicating if execution must wait until the * request has been acknowledged as complete * * Return: 0 on success, errno on failure */ static int rpmh_regulator_send_request(struct rpmh_vreg *vreg, struct tcs_cmd *cmd, bool wait_for_ack) { … } static int _rpmh_regulator_vrm_set_voltage_sel(struct regulator_dev *rdev, unsigned int selector, bool wait_for_ack) { … } static int rpmh_regulator_vrm_set_voltage_sel(struct regulator_dev *rdev, unsigned int selector) { … } static int rpmh_regulator_vrm_get_voltage_sel(struct regulator_dev *rdev) { … } static int rpmh_regulator_is_enabled(struct regulator_dev *rdev) { … } static int rpmh_regulator_set_enable_state(struct regulator_dev *rdev, bool enable) { … } static int rpmh_regulator_enable(struct regulator_dev *rdev) { … } static int rpmh_regulator_disable(struct regulator_dev *rdev) { … } static int rpmh_regulator_vrm_set_mode_bypass(struct rpmh_vreg *vreg, unsigned int mode, bool bypassed) { … } static int rpmh_regulator_vrm_set_mode(struct regulator_dev *rdev, unsigned int mode) { … } static unsigned int rpmh_regulator_vrm_get_mode(struct regulator_dev *rdev) { … } /** * rpmh_regulator_vrm_get_optimum_mode() - get the mode based on the load * @rdev: Regulator device pointer for the rpmh-regulator * @input_uV: Input voltage * @output_uV: Output voltage * @load_uA: Aggregated load current in microamps * * This function is used in the regulator_ops for VRM type RPMh regulator * devices. * * Return: 0 on success, errno on failure */ static unsigned int rpmh_regulator_vrm_get_optimum_mode( struct regulator_dev *rdev, int input_uV, int output_uV, int load_uA) { … } static int rpmh_regulator_vrm_set_bypass(struct regulator_dev *rdev, bool enable) { … } static int rpmh_regulator_vrm_get_bypass(struct regulator_dev *rdev, bool *enable) { … } static const struct regulator_ops rpmh_regulator_vrm_ops = …; static const struct regulator_ops rpmh_regulator_vrm_drms_ops = …; static const struct regulator_ops rpmh_regulator_vrm_bypass_ops = …; static const struct regulator_ops rpmh_regulator_xob_ops = …; /** * rpmh_regulator_init_vreg() - initialize all attributes of an rpmh-regulator * @vreg: Pointer to the individual rpmh-regulator resource * @dev: Pointer to the top level rpmh-regulator PMIC device * @node: Pointer to the individual rpmh-regulator resource * device node * @pmic_id: String used to identify the top level rpmh-regulator * PMIC device on the board * @pmic_rpmh_data: Pointer to a null-terminated array of rpmh-regulator * resources defined for the top level PMIC device * * Return: 0 on success, errno on failure */ static int rpmh_regulator_init_vreg(struct rpmh_vreg *vreg, struct device *dev, struct device_node *node, const char *pmic_id, const struct rpmh_vreg_init_data *pmic_rpmh_data) { … } static const int pmic_mode_map_pmic4_ldo[REGULATOR_MODE_STANDBY + 1] = …; static const int pmic_mode_map_pmic5_ldo[REGULATOR_MODE_STANDBY + 1] = …; static const int pmic_mode_map_pmic5_ldo_hpm[REGULATOR_MODE_STANDBY + 1] = …; static unsigned int rpmh_regulator_pmic4_ldo_of_map_mode(unsigned int rpmh_mode) { … } static const int pmic_mode_map_pmic4_smps[REGULATOR_MODE_STANDBY + 1] = …; static const int pmic_mode_map_pmic5_smps[REGULATOR_MODE_STANDBY + 1] = …; static unsigned int rpmh_regulator_pmic4_smps_of_map_mode(unsigned int rpmh_mode) { … } static const int pmic_mode_map_pmic4_bob[REGULATOR_MODE_STANDBY + 1] = …; static const int pmic_mode_map_pmic5_bob[REGULATOR_MODE_STANDBY + 1] = …; static unsigned int rpmh_regulator_pmic4_bob_of_map_mode(unsigned int rpmh_mode) { … } static const struct rpmh_vreg_hw_data pmic4_pldo = …; static const struct rpmh_vreg_hw_data pmic4_pldo_lv = …; static const struct rpmh_vreg_hw_data pmic4_nldo = …; static const struct rpmh_vreg_hw_data pmic4_hfsmps3 = …; static const struct rpmh_vreg_hw_data pmic4_ftsmps426 = …; static const struct rpmh_vreg_hw_data pmic4_bob = …; static const struct rpmh_vreg_hw_data pmic4_lvs = …; static const struct rpmh_vreg_hw_data pmic5_pldo = …; static const struct rpmh_vreg_hw_data pmic5_pldo_lv = …; static const struct rpmh_vreg_hw_data pmic5_pldo515_mv = …; static const struct rpmh_vreg_hw_data pmic5_pldo502 = …; static const struct rpmh_vreg_hw_data pmic5_pldo502ln = …; static const struct rpmh_vreg_hw_data pmic5_nldo = …; static const struct rpmh_vreg_hw_data pmic5_nldo515 = …; static const struct rpmh_vreg_hw_data pmic5_nldo502 = …; static const struct rpmh_vreg_hw_data pmic5_hfsmps510 = …; static const struct rpmh_vreg_hw_data pmic5_ftsmps510 = …; static const struct rpmh_vreg_hw_data pmic5_ftsmps520 = …; static const struct rpmh_vreg_hw_data pmic5_ftsmps525_lv = …; static const struct rpmh_vreg_hw_data pmic5_ftsmps525_mv = …; static const struct rpmh_vreg_hw_data pmic5_ftsmps527 = …; static const struct rpmh_vreg_hw_data pmic5_hfsmps515 = …; static const struct rpmh_vreg_hw_data pmic5_hfsmps515_1 = …; static const struct rpmh_vreg_hw_data pmic5_bob = …; #define RPMH_VREG(_name, _resource_name, _hw_data, _supply_name) … static const struct rpmh_vreg_init_data pm8998_vreg_data[] = …; static const struct rpmh_vreg_init_data pmg1110_vreg_data[] = …; static const struct rpmh_vreg_init_data pmi8998_vreg_data[] = …; static const struct rpmh_vreg_init_data pm8005_vreg_data[] = …; static const struct rpmh_vreg_init_data pm8150_vreg_data[] = …; static const struct rpmh_vreg_init_data pm8150l_vreg_data[] = …; static const struct rpmh_vreg_init_data pmm8155au_vreg_data[] = …; static const struct rpmh_vreg_init_data pmm8654au_vreg_data[] = …; static const struct rpmh_vreg_init_data pm8350_vreg_data[] = …; static const struct rpmh_vreg_init_data pm8350c_vreg_data[] = …; static const struct rpmh_vreg_init_data pm8450_vreg_data[] = …; static const struct rpmh_vreg_init_data pm8550_vreg_data[] = …; static const struct rpmh_vreg_init_data pm8550vs_vreg_data[] = …; static const struct rpmh_vreg_init_data pm8550ve_vreg_data[] = …; static const struct rpmh_vreg_init_data pmc8380_vreg_data[] = …; static const struct rpmh_vreg_init_data pm8009_vreg_data[] = …; static const struct rpmh_vreg_init_data pm8009_1_vreg_data[] = …; static const struct rpmh_vreg_init_data pm8010_vreg_data[] = …; static const struct rpmh_vreg_init_data pm6150_vreg_data[] = …; static const struct rpmh_vreg_init_data pm6150l_vreg_data[] = …; static const struct rpmh_vreg_init_data pm6350_vreg_data[] = …; static const struct rpmh_vreg_init_data pmx55_vreg_data[] = …; static const struct rpmh_vreg_init_data pmx65_vreg_data[] = …; static const struct rpmh_vreg_init_data pmx75_vreg_data[] = …; static const struct rpmh_vreg_init_data pm7325_vreg_data[] = …; static const struct rpmh_vreg_init_data pmr735a_vreg_data[] = …; static const struct rpmh_vreg_init_data pm660_vreg_data[] = …; static const struct rpmh_vreg_init_data pm660l_vreg_data[] = …; static int rpmh_regulator_probe(struct platform_device *pdev) { … } static const struct of_device_id __maybe_unused rpmh_regulator_match_table[] = …; MODULE_DEVICE_TABLE(of, rpmh_regulator_match_table); static struct platform_driver rpmh_regulator_driver = …; module_platform_driver(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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