// SPDX-License-Identifier: GPL-2.0-only /* * Motorola CPCAP PMIC regulator driver * * Based on cpcap-regulator.c from Motorola Linux kernel tree * Copyright (C) 2009-2011 Motorola, Inc. * * Rewritten for mainline kernel to use device tree and regmap * Copyright (C) 2017 Tony Lindgren <[email protected]> */ #include <linux/err.h> #include <linux/module.h> #include <linux/of.h> #include <linux/platform_device.h> #include <linux/regmap.h> #include <linux/regulator/driver.h> #include <linux/regulator/machine.h> #include <linux/regulator/of_regulator.h> #include <linux/mfd/motorola-cpcap.h> /* * Resource assignment register bits. These seem to control the state * idle modes adn are used at least for omap4. */ /* CPCAP_REG_ASSIGN2 bits - Resource Assignment 2 */ #define CPCAP_BIT_VSDIO_SEL … #define CPCAP_BIT_VDIG_SEL … #define CPCAP_BIT_VCAM_SEL … #define CPCAP_BIT_SW6_SEL … #define CPCAP_BIT_SW5_SEL … #define CPCAP_BIT_SW4_SEL … #define CPCAP_BIT_SW3_SEL … #define CPCAP_BIT_SW2_SEL … #define CPCAP_BIT_SW1_SEL … /* CPCAP_REG_ASSIGN3 bits - Resource Assignment 3 */ #define CPCAP_BIT_VUSBINT2_SEL … #define CPCAP_BIT_VUSBINT1_SEL … #define CPCAP_BIT_VVIB_SEL … #define CPCAP_BIT_VWLAN1_SEL … #define CPCAP_BIT_VRF1_SEL … #define CPCAP_BIT_VHVIO_SEL … #define CPCAP_BIT_VDAC_SEL … #define CPCAP_BIT_VUSB_SEL … #define CPCAP_BIT_VSIM_SEL … #define CPCAP_BIT_VRFREF_SEL … #define CPCAP_BIT_VPLL_SEL … #define CPCAP_BIT_VFUSE_SEL … #define CPCAP_BIT_VCSI_SEL … #define CPCAP_BIT_SPARE_14_2 … #define CPCAP_BIT_VWLAN2_SEL … #define CPCAP_BIT_VRF2_SEL … /* CPCAP_REG_ASSIGN4 bits - Resource Assignment 4 */ #define CPCAP_BIT_VAUDIO_SEL … /* * Enable register bits. At least CPCAP_BIT_AUDIO_LOW_PWR is generic, * and not limited to audio regulator. Let's use the Motorola kernel * naming for now until we have a better understanding of the other * enable register bits. No idea why BIT(3) is not defined. */ #define CPCAP_BIT_AUDIO_LOW_PWR … #define CPCAP_BIT_AUD_LOWPWR_SPEED … #define CPCAP_BIT_VAUDIOPRISTBY … #define CPCAP_BIT_VAUDIO_MODE1 … #define CPCAP_BIT_VAUDIO_MODE0 … #define CPCAP_BIT_V_AUDIO_EN … #define CPCAP_BIT_AUDIO_NORMAL_MODE … /* * Off mode configuration bit. Used currently only by SW5 on omap4. There's * the following comment in Motorola Linux kernel tree for it: * * When set in the regulator mode, the regulator assignment will be changed * to secondary when the regulator is disabled. The mode will be set back to * primary when the regulator is turned on. */ #define CPCAP_REG_OFF_MODE_SEC … /* * SoC specific configuration for CPCAP regulator. There are at least three * different SoCs each with their own parameters: omap3, omap4 and tegra2. * * The assign_reg and assign_mask seem to allow toggling between primary * and secondary mode that at least omap4 uses for off mode. */ struct cpcap_regulator { … }; #define CPCAP_REG(_ID, reg, assignment_reg, assignment_mask, val_tbl, \ mode_mask, volt_mask, mode_val, off_val, \ volt_trans_time) … struct cpcap_ddata { … }; enum cpcap_regulator_id { … }; /* * We need to also configure regulator idle mode for SoC off mode if * CPCAP_REG_OFF_MODE_SEC is set. */ static int cpcap_regulator_enable(struct regulator_dev *rdev) { … } /* * We need to also configure regulator idle mode for SoC off mode if * CPCAP_REG_OFF_MODE_SEC is set. */ static int cpcap_regulator_disable(struct regulator_dev *rdev) { … } static unsigned int cpcap_map_mode(unsigned int mode) { … } static unsigned int cpcap_regulator_get_mode(struct regulator_dev *rdev) { … } static int cpcap_regulator_set_mode(struct regulator_dev *rdev, unsigned int mode) { … } static const struct regulator_ops cpcap_regulator_ops = …; static const unsigned int unknown_val_tbl[] = …; static const unsigned int sw2_sw4_val_tbl[] = …; static const unsigned int sw5_val_tbl[] = …; static const unsigned int vcam_val_tbl[] = …; static const unsigned int vcsi_val_tbl[] = …; static const unsigned int vdac_val_tbl[] = …; static const unsigned int vdig_val_tbl[] = …; static const unsigned int vfuse_val_tbl[] = …; static const unsigned int vhvio_val_tbl[] = …; static const unsigned int vsdio_val_tbl[] = …; static const unsigned int vpll_val_tbl[] = …; /* Quirk: 2775000 is before 2500000 for vrf1 regulator */ static const unsigned int vrf1_val_tbl[] = …; static const unsigned int vrf2_val_tbl[] = …; static const unsigned int vrfref_val_tbl[] = …; static const unsigned int vwlan1_val_tbl[] = …; static const unsigned int vwlan2_val_tbl[] = …; static const unsigned int vsim_val_tbl[] = …; static const unsigned int vsimcard_val_tbl[] = …; static const unsigned int vvib_val_tbl[] = …; static const unsigned int vusb_val_tbl[] = …; static const unsigned int vaudio_val_tbl[] = …; /* * SoC specific configuration for omap4. The data below is comes from Motorola * Linux kernel tree. It's basically the values of cpcap_regltr_data, * cpcap_regulator_mode_values and cpcap_regulator_off_mode_values, see * CPCAP_REG macro above. * * SW1 to SW4 and SW6 seems to be unused for mapphone. Note that VSIM and * VSIMCARD have a shared resource assignment bit. */ static const struct cpcap_regulator omap4_regulators[] = …; static const struct cpcap_regulator xoom_regulators[] = …; static const struct of_device_id cpcap_regulator_id_table[] = …; MODULE_DEVICE_TABLE(of, cpcap_regulator_id_table); static int cpcap_regulator_probe(struct platform_device *pdev) { … } static struct platform_driver cpcap_regulator_driver = …; module_platform_driver(…) …; MODULE_ALIAS(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
Codebase Browser
linux