272 lines
6.9 KiB
C
272 lines
6.9 KiB
C
// 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_vdc - 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_vdc - 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_fan5355_vsel_to_vdc - 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_vdc - 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);
|