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