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
/*
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* Copyright (C) 2010 NVIDIA, Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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* 02111-1307, USA
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*/
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#include <linux/i2c.h>
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#include <linux/platform_device.h>
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#include <linux/gpio.h>
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#include <linux/io.h>
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#include <linux/regulator/machine.h>
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#include <linux/mfd/tps6586x.h>
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#include <mach/iomap.h>
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#include <mach/irqs.h>
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#include "board-harmony.h"
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#define PMC_CTRL 0x0
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#define PMC_CTRL_INTR_LOW (1 << 17)
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static struct regulator_consumer_supply tps658621_ldo0_supply[] = {
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REGULATOR_SUPPLY("pex_clk", NULL),
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};
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static struct regulator_init_data ldo0_data = {
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.constraints = {
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.min_uV = 1250 * 1000,
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.max_uV = 3300 * 1000,
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.valid_modes_mask = (REGULATOR_MODE_NORMAL |
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REGULATOR_MODE_STANDBY),
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.valid_ops_mask = (REGULATOR_CHANGE_MODE |
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REGULATOR_CHANGE_STATUS |
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REGULATOR_CHANGE_VOLTAGE),
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},
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.num_consumer_supplies = ARRAY_SIZE(tps658621_ldo0_supply),
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.consumer_supplies = tps658621_ldo0_supply,
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};
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#define HARMONY_REGULATOR_INIT(_id, _minmv, _maxmv) \
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static struct regulator_init_data _id##_data = { \
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.constraints = { \
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.min_uV = (_minmv)*1000, \
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.max_uV = (_maxmv)*1000, \
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.valid_modes_mask = (REGULATOR_MODE_NORMAL | \
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REGULATOR_MODE_STANDBY), \
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.valid_ops_mask = (REGULATOR_CHANGE_MODE | \
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REGULATOR_CHANGE_STATUS | \
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REGULATOR_CHANGE_VOLTAGE), \
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}, \
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}
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HARMONY_REGULATOR_INIT(sm0, 725, 1500);
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HARMONY_REGULATOR_INIT(sm1, 725, 1500);
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HARMONY_REGULATOR_INIT(sm2, 3000, 4550);
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HARMONY_REGULATOR_INIT(ldo1, 725, 1500);
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HARMONY_REGULATOR_INIT(ldo2, 725, 1500);
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HARMONY_REGULATOR_INIT(ldo3, 1250, 3300);
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HARMONY_REGULATOR_INIT(ldo4, 1700, 2475);
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HARMONY_REGULATOR_INIT(ldo5, 1250, 3300);
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HARMONY_REGULATOR_INIT(ldo6, 1250, 3300);
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HARMONY_REGULATOR_INIT(ldo7, 1250, 3300);
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HARMONY_REGULATOR_INIT(ldo8, 1250, 3300);
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HARMONY_REGULATOR_INIT(ldo9, 1250, 3300);
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#define TPS_REG(_id, _data) \
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{ \
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.id = TPS6586X_ID_##_id, \
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.name = "tps6586x-regulator", \
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.platform_data = _data, \
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}
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static struct tps6586x_subdev_info tps_devs[] = {
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TPS_REG(SM_0, &sm0_data),
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TPS_REG(SM_1, &sm1_data),
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TPS_REG(SM_2, &sm2_data),
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TPS_REG(LDO_0, &ldo0_data),
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TPS_REG(LDO_1, &ldo1_data),
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TPS_REG(LDO_2, &ldo2_data),
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TPS_REG(LDO_3, &ldo3_data),
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TPS_REG(LDO_4, &ldo4_data),
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TPS_REG(LDO_5, &ldo5_data),
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TPS_REG(LDO_6, &ldo6_data),
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TPS_REG(LDO_7, &ldo7_data),
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TPS_REG(LDO_8, &ldo8_data),
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TPS_REG(LDO_9, &ldo9_data),
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};
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static struct tps6586x_platform_data tps_platform = {
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.irq_base = TEGRA_NR_IRQS,
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.num_subdevs = ARRAY_SIZE(tps_devs),
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.subdevs = tps_devs,
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.gpio_base = HARMONY_GPIO_TPS6586X(0),
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};
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static struct i2c_board_info __initdata harmony_regulators[] = {
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{
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I2C_BOARD_INFO("tps6586x", 0x34),
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.irq = INT_EXTERNAL_PMU,
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.platform_data = &tps_platform,
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},
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};
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int __init harmony_regulator_init(void)
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{
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void __iomem *pmc = IO_ADDRESS(TEGRA_PMC_BASE);
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u32 pmc_ctrl;
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/*
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* Configure the power management controller to trigger PMU
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* interrupts when low
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*/
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pmc_ctrl = readl(pmc + PMC_CTRL);
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writel(pmc_ctrl | PMC_CTRL_INTR_LOW, pmc + PMC_CTRL);
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i2c_register_board_info(3, harmony_regulators, 1);
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return 0;
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}
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