mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-25 17:10:50 +07:00
82ea267f7d
The combination of commit1b1247dd75"mfd: Add support for RICOH PMIC RC5T583" and commit6ffc327021"regulator: Add support for RICOH PMIC RC5T583 regulator" are causing the i386 allmodconfig builds to fail with this: ERROR: "rc5t583_update" [drivers/regulator/rc5t583-regulator.ko] undefined! ERROR: "rc5t583_set_bits" [drivers/regulator/rc5t583-regulator.ko] undefined! ERROR: "rc5t583_clear_bits" [drivers/regulator/rc5t583-regulator.ko] undefined! ERROR: "rc5t583_read" [drivers/regulator/rc5t583-regulator.ko] undefined! and this: ERROR: "rc5t583_ext_power_req_config" [drivers/regulator/rc5t583-regulator.ko] undefined! For the 1st four, make the simple ops static inline, instead of polluting the namespace with trivial exports. For the last one, add an EXPORT_SYMBOL. Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
350 lines
8.8 KiB
C
350 lines
8.8 KiB
C
/*
|
|
* Core driver access RC5T583 power management chip.
|
|
*
|
|
* Copyright (c) 2011-2012, NVIDIA CORPORATION. All rights reserved.
|
|
* Author: Laxman dewangan <ldewangan@nvidia.com>
|
|
*
|
|
* Based on code
|
|
* Copyright (C) 2011 RICOH COMPANY,LTD
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms and conditions of the GNU General Public License,
|
|
* version 2, as published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope it will be useful, but WITHOUT
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
|
* more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*
|
|
*/
|
|
#include <linux/interrupt.h>
|
|
#include <linux/irq.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/module.h>
|
|
#include <linux/init.h>
|
|
#include <linux/err.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/i2c.h>
|
|
#include <linux/mfd/core.h>
|
|
#include <linux/mfd/rc5t583.h>
|
|
#include <linux/regmap.h>
|
|
|
|
#define RICOH_ONOFFSEL_REG 0x10
|
|
#define RICOH_SWCTL_REG 0x5E
|
|
|
|
struct deepsleep_control_data {
|
|
u8 reg_add;
|
|
u8 ds_pos_bit;
|
|
};
|
|
|
|
#define DEEPSLEEP_INIT(_id, _reg, _pos) \
|
|
{ \
|
|
.reg_add = RC5T583_##_reg, \
|
|
.ds_pos_bit = _pos, \
|
|
}
|
|
|
|
static struct deepsleep_control_data deepsleep_data[] = {
|
|
DEEPSLEEP_INIT(DC0, SLPSEQ1, 0),
|
|
DEEPSLEEP_INIT(DC1, SLPSEQ1, 4),
|
|
DEEPSLEEP_INIT(DC2, SLPSEQ2, 0),
|
|
DEEPSLEEP_INIT(DC3, SLPSEQ2, 4),
|
|
DEEPSLEEP_INIT(LDO0, SLPSEQ3, 0),
|
|
DEEPSLEEP_INIT(LDO1, SLPSEQ3, 4),
|
|
DEEPSLEEP_INIT(LDO2, SLPSEQ4, 0),
|
|
DEEPSLEEP_INIT(LDO3, SLPSEQ4, 4),
|
|
DEEPSLEEP_INIT(LDO4, SLPSEQ5, 0),
|
|
DEEPSLEEP_INIT(LDO5, SLPSEQ5, 4),
|
|
DEEPSLEEP_INIT(LDO6, SLPSEQ6, 0),
|
|
DEEPSLEEP_INIT(LDO7, SLPSEQ6, 4),
|
|
DEEPSLEEP_INIT(LDO8, SLPSEQ7, 0),
|
|
DEEPSLEEP_INIT(LDO9, SLPSEQ7, 4),
|
|
DEEPSLEEP_INIT(PSO0, SLPSEQ8, 0),
|
|
DEEPSLEEP_INIT(PSO1, SLPSEQ8, 4),
|
|
DEEPSLEEP_INIT(PSO2, SLPSEQ9, 0),
|
|
DEEPSLEEP_INIT(PSO3, SLPSEQ9, 4),
|
|
DEEPSLEEP_INIT(PSO4, SLPSEQ10, 0),
|
|
DEEPSLEEP_INIT(PSO5, SLPSEQ10, 4),
|
|
DEEPSLEEP_INIT(PSO6, SLPSEQ11, 0),
|
|
DEEPSLEEP_INIT(PSO7, SLPSEQ11, 4),
|
|
};
|
|
|
|
#define EXT_PWR_REQ \
|
|
(RC5T583_EXT_PWRREQ1_CONTROL | RC5T583_EXT_PWRREQ2_CONTROL)
|
|
|
|
static struct mfd_cell rc5t583_subdevs[] = {
|
|
{.name = "rc5t583-regulator",},
|
|
{.name = "rc5t583-rtc", },
|
|
{.name = "rc5t583-key", }
|
|
};
|
|
|
|
static int __rc5t583_set_ext_pwrreq1_control(struct device *dev,
|
|
int id, int ext_pwr, int slots)
|
|
{
|
|
int ret;
|
|
uint8_t sleepseq_val;
|
|
unsigned int en_bit;
|
|
unsigned int slot_bit;
|
|
|
|
if (id == RC5T583_DS_DC0) {
|
|
dev_err(dev, "PWRREQ1 is invalid control for rail %d\n", id);
|
|
return -EINVAL;
|
|
}
|
|
|
|
en_bit = deepsleep_data[id].ds_pos_bit;
|
|
slot_bit = en_bit + 1;
|
|
ret = rc5t583_read(dev, deepsleep_data[id].reg_add, &sleepseq_val);
|
|
if (ret < 0) {
|
|
dev_err(dev, "Error in reading reg 0x%x\n",
|
|
deepsleep_data[id].reg_add);
|
|
return ret;
|
|
}
|
|
|
|
sleepseq_val &= ~(0xF << en_bit);
|
|
sleepseq_val |= BIT(en_bit);
|
|
sleepseq_val |= ((slots & 0x7) << slot_bit);
|
|
ret = rc5t583_set_bits(dev, RICOH_ONOFFSEL_REG, BIT(1));
|
|
if (ret < 0) {
|
|
dev_err(dev, "Error in updating the 0x%02x register\n",
|
|
RICOH_ONOFFSEL_REG);
|
|
return ret;
|
|
}
|
|
|
|
ret = rc5t583_write(dev, deepsleep_data[id].reg_add, sleepseq_val);
|
|
if (ret < 0) {
|
|
dev_err(dev, "Error in writing reg 0x%x\n",
|
|
deepsleep_data[id].reg_add);
|
|
return ret;
|
|
}
|
|
|
|
if (id == RC5T583_DS_LDO4) {
|
|
ret = rc5t583_write(dev, RICOH_SWCTL_REG, 0x1);
|
|
if (ret < 0)
|
|
dev_err(dev, "Error in writing reg 0x%x\n",
|
|
RICOH_SWCTL_REG);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static int __rc5t583_set_ext_pwrreq2_control(struct device *dev,
|
|
int id, int ext_pwr)
|
|
{
|
|
int ret;
|
|
|
|
if (id != RC5T583_DS_DC0) {
|
|
dev_err(dev, "PWRREQ2 is invalid control for rail %d\n", id);
|
|
return -EINVAL;
|
|
}
|
|
|
|
ret = rc5t583_set_bits(dev, RICOH_ONOFFSEL_REG, BIT(2));
|
|
if (ret < 0)
|
|
dev_err(dev, "Error in updating the ONOFFSEL 0x10 register\n");
|
|
return ret;
|
|
}
|
|
|
|
int rc5t583_ext_power_req_config(struct device *dev, int ds_id,
|
|
int ext_pwr_req, int deepsleep_slot_nr)
|
|
{
|
|
if ((ext_pwr_req & EXT_PWR_REQ) == EXT_PWR_REQ)
|
|
return -EINVAL;
|
|
|
|
if (ext_pwr_req & RC5T583_EXT_PWRREQ1_CONTROL)
|
|
return __rc5t583_set_ext_pwrreq1_control(dev, ds_id,
|
|
ext_pwr_req, deepsleep_slot_nr);
|
|
|
|
if (ext_pwr_req & RC5T583_EXT_PWRREQ2_CONTROL)
|
|
return __rc5t583_set_ext_pwrreq2_control(dev,
|
|
ds_id, ext_pwr_req);
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(rc5t583_ext_power_req_config);
|
|
|
|
static int rc5t583_clear_ext_power_req(struct rc5t583 *rc5t583,
|
|
struct rc5t583_platform_data *pdata)
|
|
{
|
|
int ret;
|
|
int i;
|
|
uint8_t on_off_val = 0;
|
|
|
|
/* Clear ONOFFSEL register */
|
|
if (pdata->enable_shutdown)
|
|
on_off_val = 0x1;
|
|
|
|
ret = rc5t583_write(rc5t583->dev, RICOH_ONOFFSEL_REG, on_off_val);
|
|
if (ret < 0)
|
|
dev_warn(rc5t583->dev, "Error in writing reg %d error: %d\n",
|
|
RICOH_ONOFFSEL_REG, ret);
|
|
|
|
ret = rc5t583_write(rc5t583->dev, RICOH_SWCTL_REG, 0x0);
|
|
if (ret < 0)
|
|
dev_warn(rc5t583->dev, "Error in writing reg %d error: %d\n",
|
|
RICOH_SWCTL_REG, ret);
|
|
|
|
/* Clear sleep sequence register */
|
|
for (i = RC5T583_SLPSEQ1; i <= RC5T583_SLPSEQ11; ++i) {
|
|
ret = rc5t583_write(rc5t583->dev, i, 0x0);
|
|
if (ret < 0)
|
|
dev_warn(rc5t583->dev,
|
|
"Error in writing reg 0x%02x error: %d\n",
|
|
i, ret);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static bool volatile_reg(struct device *dev, unsigned int reg)
|
|
{
|
|
/* Enable caching in interrupt registers */
|
|
switch (reg) {
|
|
case RC5T583_INT_EN_SYS1:
|
|
case RC5T583_INT_EN_SYS2:
|
|
case RC5T583_INT_EN_DCDC:
|
|
case RC5T583_INT_EN_RTC:
|
|
case RC5T583_INT_EN_ADC1:
|
|
case RC5T583_INT_EN_ADC2:
|
|
case RC5T583_INT_EN_ADC3:
|
|
case RC5T583_GPIO_GPEDGE1:
|
|
case RC5T583_GPIO_GPEDGE2:
|
|
case RC5T583_GPIO_EN_INT:
|
|
return false;
|
|
|
|
case RC5T583_GPIO_MON_IOIN:
|
|
/* This is gpio input register */
|
|
return true;
|
|
|
|
default:
|
|
/* Enable caching in gpio registers */
|
|
if ((reg >= RC5T583_GPIO_IOSEL) &&
|
|
(reg <= RC5T583_GPIO_GPOFUNC))
|
|
return false;
|
|
|
|
/* Enable caching in sleep seq registers */
|
|
if ((reg >= RC5T583_SLPSEQ1) && (reg <= RC5T583_SLPSEQ11))
|
|
return false;
|
|
|
|
/* Enable caching of regulator registers */
|
|
if ((reg >= RC5T583_REG_DC0CTL) && (reg <= RC5T583_REG_SR3CTL))
|
|
return false;
|
|
if ((reg >= RC5T583_REG_LDOEN1) &&
|
|
(reg <= RC5T583_REG_LDO9DAC_DS))
|
|
return false;
|
|
|
|
break;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
static const struct regmap_config rc5t583_regmap_config = {
|
|
.reg_bits = 8,
|
|
.val_bits = 8,
|
|
.volatile_reg = volatile_reg,
|
|
.max_register = RC5T583_MAX_REGS,
|
|
.num_reg_defaults_raw = RC5T583_MAX_REGS,
|
|
.cache_type = REGCACHE_RBTREE,
|
|
};
|
|
|
|
static int __devinit rc5t583_i2c_probe(struct i2c_client *i2c,
|
|
const struct i2c_device_id *id)
|
|
{
|
|
struct rc5t583 *rc5t583;
|
|
struct rc5t583_platform_data *pdata = i2c->dev.platform_data;
|
|
int ret;
|
|
bool irq_init_success = false;
|
|
|
|
if (!pdata) {
|
|
dev_err(&i2c->dev, "Err: Platform data not found\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
rc5t583 = devm_kzalloc(&i2c->dev, sizeof(struct rc5t583), GFP_KERNEL);
|
|
if (!rc5t583) {
|
|
dev_err(&i2c->dev, "Memory allocation failed\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
rc5t583->dev = &i2c->dev;
|
|
i2c_set_clientdata(i2c, rc5t583);
|
|
|
|
rc5t583->regmap = regmap_init_i2c(i2c, &rc5t583_regmap_config);
|
|
if (IS_ERR(rc5t583->regmap)) {
|
|
ret = PTR_ERR(rc5t583->regmap);
|
|
dev_err(&i2c->dev, "regmap initialization failed: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
ret = rc5t583_clear_ext_power_req(rc5t583, pdata);
|
|
if (ret < 0)
|
|
goto err_irq_init;
|
|
|
|
if (i2c->irq) {
|
|
ret = rc5t583_irq_init(rc5t583, i2c->irq, pdata->irq_base);
|
|
/* Still continue with waring if irq init fails */
|
|
if (ret)
|
|
dev_warn(&i2c->dev, "IRQ init failed: %d\n", ret);
|
|
else
|
|
irq_init_success = true;
|
|
}
|
|
|
|
ret = mfd_add_devices(rc5t583->dev, -1, rc5t583_subdevs,
|
|
ARRAY_SIZE(rc5t583_subdevs), NULL, 0);
|
|
if (ret) {
|
|
dev_err(&i2c->dev, "add mfd devices failed: %d\n", ret);
|
|
goto err_add_devs;
|
|
}
|
|
|
|
return 0;
|
|
|
|
err_add_devs:
|
|
if (irq_init_success)
|
|
rc5t583_irq_exit(rc5t583);
|
|
err_irq_init:
|
|
regmap_exit(rc5t583->regmap);
|
|
return ret;
|
|
}
|
|
|
|
static int __devexit rc5t583_i2c_remove(struct i2c_client *i2c)
|
|
{
|
|
struct rc5t583 *rc5t583 = i2c_get_clientdata(i2c);
|
|
|
|
mfd_remove_devices(rc5t583->dev);
|
|
rc5t583_irq_exit(rc5t583);
|
|
regmap_exit(rc5t583->regmap);
|
|
return 0;
|
|
}
|
|
|
|
static const struct i2c_device_id rc5t583_i2c_id[] = {
|
|
{.name = "rc5t583", .driver_data = 0},
|
|
{}
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(i2c, rc5t583_i2c_id);
|
|
|
|
static struct i2c_driver rc5t583_i2c_driver = {
|
|
.driver = {
|
|
.name = "rc5t583",
|
|
.owner = THIS_MODULE,
|
|
},
|
|
.probe = rc5t583_i2c_probe,
|
|
.remove = __devexit_p(rc5t583_i2c_remove),
|
|
.id_table = rc5t583_i2c_id,
|
|
};
|
|
|
|
static int __init rc5t583_i2c_init(void)
|
|
{
|
|
return i2c_add_driver(&rc5t583_i2c_driver);
|
|
}
|
|
subsys_initcall(rc5t583_i2c_init);
|
|
|
|
static void __exit rc5t583_i2c_exit(void)
|
|
{
|
|
i2c_del_driver(&rc5t583_i2c_driver);
|
|
}
|
|
|
|
module_exit(rc5t583_i2c_exit);
|
|
|
|
MODULE_AUTHOR("Laxman Dewangan <ldewangan@nvidia.com>");
|
|
MODULE_DESCRIPTION("RICOH RC5T583 power management system device driver");
|
|
MODULE_LICENSE("GPL v2");
|