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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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fcb28d2e9d
This retires the B26/S26, B330/S330 and B365/S365 boards from the U300 platform. The only board really used anywhere today is the S335 so let's concentrate any efforts on that one board. Also the board variants are selected at compile-time, which is strictly a no-no these days, if multi-board support is to be brought back it need to happen using run-time and device tree. My work on ARM Linux started on the B26/S26 so it's a bit sad to see it go, but there is a time to move on with all things in life. Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
286 lines
6.9 KiB
C
286 lines
6.9 KiB
C
/*
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* arch/arm/mach-u300/i2c.c
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*
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* Copyright (C) 2009-2012 ST-Ericsson AB
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* License terms: GNU General Public License (GPL) version 2
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*
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* Register board i2c devices
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* Author: Linus Walleij <linus.walleij@stericsson.com>
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*/
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#include <linux/kernel.h>
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#include <linux/i2c.h>
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#include <linux/mfd/abx500.h>
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#include <linux/regulator/machine.h>
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#include <linux/amba/bus.h>
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#include <mach/irqs.h>
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/*
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* Initial settings of ab3100 registers.
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* Common for below LDO regulator settings are that
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* bit 7-5 controls voltage. Bit 4 turns regulator ON(1) or OFF(0).
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* Bit 3-2 controls sleep enable and bit 1-0 controls sleep mode.
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*/
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/* LDO_A 0x16: 2.75V, ON, SLEEP_A, SLEEP OFF GND */
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#define LDO_A_SETTING 0x16
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/* LDO_C 0x10: 2.65V, ON, SLEEP_A or B, SLEEP full power */
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#define LDO_C_SETTING 0x10
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/* LDO_D 0x10: 2.65V, ON, sleep mode not used */
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#define LDO_D_SETTING 0x10
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/* LDO_E 0x10: 1.8V, ON, SLEEP_A or B, SLEEP full power */
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#define LDO_E_SETTING 0x10
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/* LDO_E SLEEP 0x00: 1.8V, not used, SLEEP_A or B, not used */
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#define LDO_E_SLEEP_SETTING 0x00
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/* LDO_F 0xD0: 2.5V, ON, SLEEP_A or B, SLEEP full power */
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#define LDO_F_SETTING 0xD0
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/* LDO_G 0x00: 2.85V, OFF, SLEEP_A or B, SLEEP full power */
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#define LDO_G_SETTING 0x00
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/* LDO_H 0x18: 2.75V, ON, SLEEP_B, SLEEP full power */
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#define LDO_H_SETTING 0x18
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/* LDO_K 0x00: 2.75V, OFF, SLEEP_A or B, SLEEP full power */
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#define LDO_K_SETTING 0x00
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/* LDO_EXT 0x00: Voltage not set, OFF, not used, not used */
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#define LDO_EXT_SETTING 0x00
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/* BUCK 0x7D: 1.2V, ON, SLEEP_A and B, SLEEP low power */
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#define BUCK_SETTING 0x7D
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/* BUCK SLEEP 0xAC: 1.05V, Not used, SLEEP_A and B, Not used */
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#define BUCK_SLEEP_SETTING 0xAC
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#ifdef CONFIG_AB3100_CORE
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static struct regulator_consumer_supply supply_ldo_c[] = {
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{
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.dev_name = "ab3100-codec",
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.supply = "vaudio", /* Powers the codec */
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},
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};
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/*
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* This one needs to be a supply so we can turn it off
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* in order to shut down the system.
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*/
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static struct regulator_consumer_supply supply_ldo_d[] = {
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{
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.supply = "vana15", /* Powers the SoC (CPU etc) */
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},
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};
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static struct regulator_consumer_supply supply_ldo_g[] = {
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{
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.dev_name = "mmci",
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.supply = "vmmc", /* Powers MMC/SD card */
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},
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};
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static struct regulator_consumer_supply supply_ldo_h[] = {
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{
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.dev_name = "xgam_pdi",
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.supply = "vdisp", /* Powers camera, display etc */
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},
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};
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static struct regulator_consumer_supply supply_ldo_k[] = {
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{
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.dev_name = "irda",
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.supply = "vir", /* Power IrDA */
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},
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};
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/*
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* This is a placeholder for whoever wish to use the
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* external power.
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*/
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static struct regulator_consumer_supply supply_ldo_ext[] = {
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{
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.supply = "vext", /* External power */
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},
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};
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/* Preset (hardware defined) voltages for these regulators */
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#define LDO_A_VOLTAGE 2750000
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#define LDO_C_VOLTAGE 2650000
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#define LDO_D_VOLTAGE 2650000
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static struct ab3100_platform_data ab3100_plf_data = {
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.reg_constraints = {
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/* LDO A routing and constraints */
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{
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.constraints = {
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.name = "vrad",
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.min_uV = LDO_A_VOLTAGE,
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.max_uV = LDO_A_VOLTAGE,
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.valid_modes_mask = REGULATOR_MODE_NORMAL,
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.always_on = 1,
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.boot_on = 1,
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},
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},
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/* LDO C routing and constraints */
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{
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.constraints = {
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.min_uV = LDO_C_VOLTAGE,
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.max_uV = LDO_C_VOLTAGE,
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.valid_modes_mask = REGULATOR_MODE_NORMAL,
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},
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.num_consumer_supplies = ARRAY_SIZE(supply_ldo_c),
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.consumer_supplies = supply_ldo_c,
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},
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/* LDO D routing and constraints */
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{
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.constraints = {
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.min_uV = LDO_D_VOLTAGE,
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.max_uV = LDO_D_VOLTAGE,
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.valid_modes_mask = REGULATOR_MODE_NORMAL,
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.valid_ops_mask = REGULATOR_CHANGE_STATUS,
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/*
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* Actually this is boot_on but we need
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* to reference count it externally to
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* be able to shut down the system.
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*/
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},
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.num_consumer_supplies = ARRAY_SIZE(supply_ldo_d),
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.consumer_supplies = supply_ldo_d,
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},
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/* LDO E routing and constraints */
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{
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.constraints = {
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.name = "vio",
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.min_uV = 1800000,
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.max_uV = 1800000,
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.valid_modes_mask = REGULATOR_MODE_NORMAL,
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.always_on = 1,
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.boot_on = 1,
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},
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},
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/* LDO F routing and constraints */
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{
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.constraints = {
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.name = "vana25",
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.min_uV = 2500000,
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.max_uV = 2500000,
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.valid_modes_mask = REGULATOR_MODE_NORMAL,
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.always_on = 1,
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.boot_on = 1,
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},
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},
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/* LDO G routing and constraints */
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{
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.constraints = {
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.min_uV = 1500000,
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.max_uV = 2850000,
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.valid_modes_mask = REGULATOR_MODE_NORMAL,
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.valid_ops_mask =
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REGULATOR_CHANGE_VOLTAGE |
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REGULATOR_CHANGE_STATUS,
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},
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.num_consumer_supplies = ARRAY_SIZE(supply_ldo_g),
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.consumer_supplies = supply_ldo_g,
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},
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/* LDO H routing and constraints */
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{
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.constraints = {
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.min_uV = 1200000,
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.max_uV = 2750000,
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.valid_modes_mask = REGULATOR_MODE_NORMAL,
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.valid_ops_mask =
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REGULATOR_CHANGE_VOLTAGE |
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REGULATOR_CHANGE_STATUS,
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},
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.num_consumer_supplies = ARRAY_SIZE(supply_ldo_h),
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.consumer_supplies = supply_ldo_h,
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},
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/* LDO K routing and constraints */
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{
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.constraints = {
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.min_uV = 1800000,
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.max_uV = 2750000,
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.valid_modes_mask = REGULATOR_MODE_NORMAL,
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.valid_ops_mask =
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REGULATOR_CHANGE_VOLTAGE |
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REGULATOR_CHANGE_STATUS,
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},
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.num_consumer_supplies = ARRAY_SIZE(supply_ldo_k),
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.consumer_supplies = supply_ldo_k,
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},
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/* External regulator interface. No fixed voltage specified.
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* If we knew the voltage of the external regulator and it
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* was connected on the board, we could add the (fixed)
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* voltage for it here.
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*/
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{
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.constraints = {
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.min_uV = 0,
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.max_uV = 0,
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.valid_modes_mask = REGULATOR_MODE_NORMAL,
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.valid_ops_mask =
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REGULATOR_CHANGE_STATUS,
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},
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.num_consumer_supplies = ARRAY_SIZE(supply_ldo_ext),
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.consumer_supplies = supply_ldo_ext,
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},
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/* Buck converter routing and constraints */
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{
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.constraints = {
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.name = "vcore",
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.min_uV = 1200000,
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.max_uV = 1800000,
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.valid_modes_mask = REGULATOR_MODE_NORMAL,
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.valid_ops_mask =
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REGULATOR_CHANGE_VOLTAGE,
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.always_on = 1,
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.boot_on = 1,
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},
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},
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},
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.reg_initvals = {
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LDO_A_SETTING,
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LDO_C_SETTING,
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LDO_E_SETTING,
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LDO_E_SLEEP_SETTING,
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LDO_F_SETTING,
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LDO_G_SETTING,
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LDO_H_SETTING,
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LDO_K_SETTING,
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LDO_EXT_SETTING,
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BUCK_SETTING,
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BUCK_SLEEP_SETTING,
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LDO_D_SETTING,
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},
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};
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#endif
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static struct i2c_board_info __initdata bus0_i2c_board_info[] = {
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#ifdef CONFIG_AB3100_CORE
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{
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.type = "ab3100",
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.addr = 0x48,
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.irq = IRQ_U300_IRQ0_EXT,
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.platform_data = &ab3100_plf_data,
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},
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#else
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{ },
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#endif
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};
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static struct i2c_board_info __initdata bus1_i2c_board_info[] = {
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{
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.type = "fwcam",
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.addr = 0x10,
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},
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{
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.type = "fwcam",
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.addr = 0x5d,
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},
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};
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void __init u300_i2c_register_board_devices(void)
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{
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i2c_register_board_info(0, bus0_i2c_board_info,
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ARRAY_SIZE(bus0_i2c_board_info));
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/*
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* This makes the core shut down all unused regulators
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* after all the initcalls have completed.
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*/
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regulator_has_full_constraints();
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i2c_register_board_info(1, bus1_i2c_board_info,
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ARRAY_SIZE(bus1_i2c_board_info));
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}
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