mirror of
https://github.com/torvalds/linux.git
synced 2024-12-23 19:31:53 +00:00
9eb4b91e69
Without this, the PMC continually detects an interrupt when the PMU_IRQ line is high, causing the tps6686x IRQ handler thread to hog an entire CPU. This change was originally written by Wei Ni <wni@nvidia.com> for Seaboard in the ChromeOS kernel. Long-term, this should probably be moved into some kind of PMU driver, or perhaps integrated into the GPIO/IRQ/pinmux system? Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Olof Johansson <olof@lixom.net>
131 lines
3.6 KiB
C
131 lines
3.6 KiB
C
/*
|
|
* Copyright (C) 2010 NVIDIA, Inc.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope that 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, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
|
* 02111-1307, USA
|
|
*/
|
|
#include <linux/i2c.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/gpio.h>
|
|
#include <linux/io.h>
|
|
#include <linux/regulator/machine.h>
|
|
#include <linux/mfd/tps6586x.h>
|
|
|
|
#include <mach/iomap.h>
|
|
#include <mach/irqs.h>
|
|
|
|
#include "board-harmony.h"
|
|
|
|
#define PMC_CTRL 0x0
|
|
#define PMC_CTRL_INTR_LOW (1 << 17)
|
|
|
|
static struct regulator_consumer_supply tps658621_ldo0_supply[] = {
|
|
REGULATOR_SUPPLY("pex_clk", NULL),
|
|
};
|
|
|
|
static struct regulator_init_data ldo0_data = {
|
|
.constraints = {
|
|
.min_uV = 1250 * 1000,
|
|
.max_uV = 3300 * 1000,
|
|
.valid_modes_mask = (REGULATOR_MODE_NORMAL |
|
|
REGULATOR_MODE_STANDBY),
|
|
.valid_ops_mask = (REGULATOR_CHANGE_MODE |
|
|
REGULATOR_CHANGE_STATUS |
|
|
REGULATOR_CHANGE_VOLTAGE),
|
|
},
|
|
.num_consumer_supplies = ARRAY_SIZE(tps658621_ldo0_supply),
|
|
.consumer_supplies = tps658621_ldo0_supply,
|
|
};
|
|
|
|
#define HARMONY_REGULATOR_INIT(_id, _minmv, _maxmv) \
|
|
static struct regulator_init_data _id##_data = { \
|
|
.constraints = { \
|
|
.min_uV = (_minmv)*1000, \
|
|
.max_uV = (_maxmv)*1000, \
|
|
.valid_modes_mask = (REGULATOR_MODE_NORMAL | \
|
|
REGULATOR_MODE_STANDBY), \
|
|
.valid_ops_mask = (REGULATOR_CHANGE_MODE | \
|
|
REGULATOR_CHANGE_STATUS | \
|
|
REGULATOR_CHANGE_VOLTAGE), \
|
|
}, \
|
|
}
|
|
|
|
HARMONY_REGULATOR_INIT(sm0, 725, 1500);
|
|
HARMONY_REGULATOR_INIT(sm1, 725, 1500);
|
|
HARMONY_REGULATOR_INIT(sm2, 3000, 4550);
|
|
HARMONY_REGULATOR_INIT(ldo1, 725, 1500);
|
|
HARMONY_REGULATOR_INIT(ldo2, 725, 1500);
|
|
HARMONY_REGULATOR_INIT(ldo3, 1250, 3300);
|
|
HARMONY_REGULATOR_INIT(ldo4, 1700, 2475);
|
|
HARMONY_REGULATOR_INIT(ldo5, 1250, 3300);
|
|
HARMONY_REGULATOR_INIT(ldo6, 1250, 3300);
|
|
HARMONY_REGULATOR_INIT(ldo7, 1250, 3300);
|
|
HARMONY_REGULATOR_INIT(ldo8, 1250, 3300);
|
|
HARMONY_REGULATOR_INIT(ldo9, 1250, 3300);
|
|
|
|
#define TPS_REG(_id, _data) \
|
|
{ \
|
|
.id = TPS6586X_ID_##_id, \
|
|
.name = "tps6586x-regulator", \
|
|
.platform_data = _data, \
|
|
}
|
|
|
|
static struct tps6586x_subdev_info tps_devs[] = {
|
|
TPS_REG(SM_0, &sm0_data),
|
|
TPS_REG(SM_1, &sm1_data),
|
|
TPS_REG(SM_2, &sm2_data),
|
|
TPS_REG(LDO_0, &ldo0_data),
|
|
TPS_REG(LDO_1, &ldo1_data),
|
|
TPS_REG(LDO_2, &ldo2_data),
|
|
TPS_REG(LDO_3, &ldo3_data),
|
|
TPS_REG(LDO_4, &ldo4_data),
|
|
TPS_REG(LDO_5, &ldo5_data),
|
|
TPS_REG(LDO_6, &ldo6_data),
|
|
TPS_REG(LDO_7, &ldo7_data),
|
|
TPS_REG(LDO_8, &ldo8_data),
|
|
TPS_REG(LDO_9, &ldo9_data),
|
|
};
|
|
|
|
static struct tps6586x_platform_data tps_platform = {
|
|
.irq_base = TEGRA_NR_IRQS,
|
|
.num_subdevs = ARRAY_SIZE(tps_devs),
|
|
.subdevs = tps_devs,
|
|
.gpio_base = HARMONY_GPIO_TPS6586X(0),
|
|
};
|
|
|
|
static struct i2c_board_info __initdata harmony_regulators[] = {
|
|
{
|
|
I2C_BOARD_INFO("tps6586x", 0x34),
|
|
.irq = INT_EXTERNAL_PMU,
|
|
.platform_data = &tps_platform,
|
|
},
|
|
};
|
|
|
|
int __init harmony_regulator_init(void)
|
|
{
|
|
void __iomem *pmc = IO_ADDRESS(TEGRA_PMC_BASE);
|
|
u32 pmc_ctrl;
|
|
|
|
/*
|
|
* Configure the power management controller to trigger PMU
|
|
* interrupts when low
|
|
*/
|
|
pmc_ctrl = readl(pmc + PMC_CTRL);
|
|
writel(pmc_ctrl | PMC_CTRL_INTR_LOW, pmc + PMC_CTRL);
|
|
|
|
i2c_register_board_info(3, harmony_regulators, 1);
|
|
|
|
return 0;
|
|
}
|