272 lines
6.9 KiB
C
272 lines
6.9 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* pmic-cpcap.c - CPCAP-specific functions for the OPP code
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*
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* Adapted from Motorola Mapphone Android Linux kernel
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* Copyright (C) 2011 Motorola, Inc.
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*/
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#include <linux/err.h>
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#include <linux/io.h>
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#include <linux/kernel.h>
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#include "soc.h"
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#include "pm.h"
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#include "voltage.h"
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#include <linux/init.h>
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#include "vc.h"
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/**
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* omap_cpcap_vsel_to_vdc - convert CPCAP VSEL value to microvolts DC
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* @vsel: CPCAP VSEL value to convert
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*
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* Returns the microvolts DC that the CPCAP PMIC should generate when
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* programmed with @vsel.
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*/
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static unsigned long omap_cpcap_vsel_to_uv(unsigned char vsel)
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{
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if (vsel > 0x44)
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vsel = 0x44;
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return (((vsel * 125) + 6000)) * 100;
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}
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/**
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* omap_cpcap_uv_to_vsel - convert microvolts DC to CPCAP VSEL value
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* @uv: microvolts DC to convert
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*
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* Returns the VSEL value necessary for the CPCAP PMIC to
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* generate an output voltage equal to or greater than @uv microvolts DC.
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*/
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static unsigned char omap_cpcap_uv_to_vsel(unsigned long uv)
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{
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if (uv < 600000)
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uv = 600000;
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else if (uv > 1450000)
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uv = 1450000;
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return DIV_ROUND_UP(uv - 600000, 12500);
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}
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static struct omap_voltdm_pmic omap_cpcap_core = {
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.slew_rate = 4000,
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.step_size = 12500,
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.vp_erroroffset = OMAP4_VP_CONFIG_ERROROFFSET,
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.vp_vstepmin = OMAP4_VP_VSTEPMIN_VSTEPMIN,
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.vp_vstepmax = OMAP4_VP_VSTEPMAX_VSTEPMAX,
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.vddmin = 900000,
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.vddmax = 1350000,
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.vp_timeout_us = OMAP4_VP_VLIMITTO_TIMEOUT_US,
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.i2c_slave_addr = 0x02,
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.volt_reg_addr = 0x00,
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.cmd_reg_addr = 0x01,
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.i2c_high_speed = false,
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.vsel_to_uv = omap_cpcap_vsel_to_uv,
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.uv_to_vsel = omap_cpcap_uv_to_vsel,
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};
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static struct omap_voltdm_pmic omap_cpcap_iva = {
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.slew_rate = 4000,
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.step_size = 12500,
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.vp_erroroffset = OMAP4_VP_CONFIG_ERROROFFSET,
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.vp_vstepmin = OMAP4_VP_VSTEPMIN_VSTEPMIN,
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.vp_vstepmax = OMAP4_VP_VSTEPMAX_VSTEPMAX,
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.vddmin = 900000,
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.vddmax = 1350000,
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.vp_timeout_us = OMAP4_VP_VLIMITTO_TIMEOUT_US,
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.i2c_slave_addr = 0x44,
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.volt_reg_addr = 0x0,
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.cmd_reg_addr = 0x01,
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.i2c_high_speed = false,
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.vsel_to_uv = omap_cpcap_vsel_to_uv,
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.uv_to_vsel = omap_cpcap_uv_to_vsel,
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};
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/**
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* omap_max8952_vsel_to_vdc - convert MAX8952 VSEL value to microvolts DC
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* @vsel: MAX8952 VSEL value to convert
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*
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* Returns the microvolts DC that the MAX8952 Regulator should generate when
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* programmed with @vsel.
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*/
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static unsigned long omap_max8952_vsel_to_uv(unsigned char vsel)
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{
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if (vsel > 0x3F)
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vsel = 0x3F;
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return (((vsel * 100) + 7700)) * 100;
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}
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/**
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* omap_max8952_uv_to_vsel - convert microvolts DC to MAX8952 VSEL value
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* @uv: microvolts DC to convert
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*
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* Returns the VSEL value necessary for the MAX8952 Regulator to
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* generate an output voltage equal to or greater than @uv microvolts DC.
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*/
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static unsigned char omap_max8952_uv_to_vsel(unsigned long uv)
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{
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if (uv < 770000)
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uv = 770000;
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else if (uv > 1400000)
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uv = 1400000;
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return DIV_ROUND_UP(uv - 770000, 10000);
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}
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static struct omap_voltdm_pmic omap443x_max8952_mpu = {
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.slew_rate = 16000,
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.step_size = 10000,
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.vp_erroroffset = OMAP4_VP_CONFIG_ERROROFFSET,
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.vp_vstepmin = OMAP4_VP_VSTEPMIN_VSTEPMIN,
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.vp_vstepmax = OMAP4_VP_VSTEPMAX_VSTEPMAX,
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.vddmin = 900000,
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.vddmax = 1400000,
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.vp_timeout_us = OMAP4_VP_VLIMITTO_TIMEOUT_US,
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.i2c_slave_addr = 0x60,
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.volt_reg_addr = 0x03,
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.cmd_reg_addr = 0x03,
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.i2c_high_speed = false,
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.vsel_to_uv = omap_max8952_vsel_to_uv,
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.uv_to_vsel = omap_max8952_uv_to_vsel,
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};
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/**
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* omap_fan5355_vsel_to_vdc - convert FAN535503 VSEL value to microvolts DC
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* @vsel: FAN535503 VSEL value to convert
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*
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* Returns the microvolts DC that the FAN535503 Regulator should generate when
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* programmed with @vsel.
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*/
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static unsigned long omap_fan535503_vsel_to_uv(unsigned char vsel)
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{
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/* Extract bits[5:0] */
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vsel &= 0x3F;
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return (((vsel * 125) + 7500)) * 100;
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}
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/**
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* omap_fan535508_vsel_to_vdc - convert FAN535508 VSEL value to microvolts DC
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* @vsel: FAN535508 VSEL value to convert
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*
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* Returns the microvolts DC that the FAN535508 Regulator should generate when
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* programmed with @vsel.
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*/
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static unsigned long omap_fan535508_vsel_to_uv(unsigned char vsel)
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{
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/* Extract bits[5:0] */
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vsel &= 0x3F;
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if (vsel > 0x37)
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vsel = 0x37;
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return (((vsel * 125) + 7500)) * 100;
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}
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/**
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* omap_fan535503_uv_to_vsel - convert microvolts DC to FAN535503 VSEL value
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* @uv: microvolts DC to convert
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*
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* Returns the VSEL value necessary for the MAX8952 Regulator to
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* generate an output voltage equal to or greater than @uv microvolts DC.
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*/
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static unsigned char omap_fan535503_uv_to_vsel(unsigned long uv)
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{
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unsigned char vsel;
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if (uv < 750000)
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uv = 750000;
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else if (uv > 1537500)
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uv = 1537500;
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vsel = DIV_ROUND_UP(uv - 750000, 12500);
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return vsel | 0xC0;
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}
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/**
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* omap_fan535508_uv_to_vsel - convert microvolts DC to FAN535508 VSEL value
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* @uv: microvolts DC to convert
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*
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* Returns the VSEL value necessary for the MAX8952 Regulator to
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* generate an output voltage equal to or greater than @uv microvolts DC.
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*/
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static unsigned char omap_fan535508_uv_to_vsel(unsigned long uv)
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{
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unsigned char vsel;
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if (uv < 750000)
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uv = 750000;
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else if (uv > 1437500)
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uv = 1437500;
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vsel = DIV_ROUND_UP(uv - 750000, 12500);
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return vsel | 0xC0;
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}
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/* fan5335-core */
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static struct omap_voltdm_pmic omap4_fan_core = {
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.slew_rate = 4000,
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.step_size = 12500,
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.vp_erroroffset = OMAP4_VP_CONFIG_ERROROFFSET,
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.vp_vstepmin = OMAP4_VP_VSTEPMIN_VSTEPMIN,
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.vp_vstepmax = OMAP4_VP_VSTEPMAX_VSTEPMAX,
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.vddmin = 850000,
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.vddmax = 1375000,
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.vp_timeout_us = OMAP4_VP_VLIMITTO_TIMEOUT_US,
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.i2c_slave_addr = 0x4A,
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.i2c_high_speed = false,
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.volt_reg_addr = 0x01,
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.cmd_reg_addr = 0x01,
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.vsel_to_uv = omap_fan535508_vsel_to_uv,
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.uv_to_vsel = omap_fan535508_uv_to_vsel,
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};
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/* fan5335 iva */
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static struct omap_voltdm_pmic omap4_fan_iva = {
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.slew_rate = 4000,
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.step_size = 12500,
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.vp_erroroffset = OMAP4_VP_CONFIG_ERROROFFSET,
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.vp_vstepmin = OMAP4_VP_VSTEPMIN_VSTEPMIN,
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.vp_vstepmax = OMAP4_VP_VSTEPMAX_VSTEPMAX,
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.vddmin = 850000,
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.vddmax = 1375000,
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.vp_timeout_us = OMAP4_VP_VLIMITTO_TIMEOUT_US,
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.i2c_slave_addr = 0x48,
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.volt_reg_addr = 0x01,
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.cmd_reg_addr = 0x01,
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.i2c_high_speed = false,
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.vsel_to_uv = omap_fan535503_vsel_to_uv,
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.uv_to_vsel = omap_fan535503_uv_to_vsel,
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};
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int __init omap4_cpcap_init(void)
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{
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struct voltagedomain *voltdm;
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if (!of_find_compatible_node(NULL, NULL, "motorola,cpcap"))
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return -ENODEV;
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voltdm = voltdm_lookup("mpu");
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omap_voltage_register_pmic(voltdm, &omap443x_max8952_mpu);
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if (of_machine_is_compatible("motorola,droid-bionic")) {
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voltdm = voltdm_lookup("mpu");
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omap_voltage_register_pmic(voltdm, &omap_cpcap_core);
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voltdm = voltdm_lookup("mpu");
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omap_voltage_register_pmic(voltdm, &omap_cpcap_iva);
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} else {
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voltdm = voltdm_lookup("core");
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omap_voltage_register_pmic(voltdm, &omap4_fan_core);
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voltdm = voltdm_lookup("iva");
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omap_voltage_register_pmic(voltdm, &omap4_fan_iva);
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}
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return 0;
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}
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static int __init cpcap_late_init(void)
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{
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omap4_vc_set_pmic_signaling(PWRDM_POWER_RET);
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return 0;
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}
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omap_late_initcall(cpcap_late_init);
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