mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-19 17:14:40 +08:00
50904e9bd6
The Crystal Cove PMIC has a pin which can be used to connect the IRQ of an external charger IC. On some boards this is used and we need to have a cell for this, with a driver which creates its own irqchip with a single IRQ for the charger driver to consume. The charger driver cannot directly consume the IRQ from the MFD level irqchip because the PMIC has 2 levels of interrupts and the second level interrupt status register, which is handled by the cell drivers, needs to have the IRQ acked to avoid an IRQ storm. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Lee Jones <lee.jones@linaro.org> Link: https://lore.kernel.org/r/20211225115509.94891-3-hdegoede@redhat.com
150 lines
4.0 KiB
C
150 lines
4.0 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
/*
|
|
* Device access for Crystal Cove PMIC
|
|
*
|
|
* Copyright (C) 2013, 2014 Intel Corporation. All rights reserved.
|
|
*
|
|
* Author: Yang, Bin <bin.yang@intel.com>
|
|
* Author: Zhu, Lejun <lejun.zhu@linux.intel.com>
|
|
*/
|
|
|
|
#include <linux/interrupt.h>
|
|
#include <linux/regmap.h>
|
|
#include <linux/mfd/core.h>
|
|
#include <linux/mfd/intel_soc_pmic.h>
|
|
|
|
#include "intel_soc_pmic_core.h"
|
|
|
|
#define CRYSTAL_COVE_MAX_REGISTER 0xC6
|
|
|
|
#define CRYSTAL_COVE_REG_IRQLVL1 0x02
|
|
#define CRYSTAL_COVE_REG_MIRQLVL1 0x0E
|
|
|
|
#define CRYSTAL_COVE_IRQ_PWRSRC 0
|
|
#define CRYSTAL_COVE_IRQ_THRM 1
|
|
#define CRYSTAL_COVE_IRQ_BCU 2
|
|
#define CRYSTAL_COVE_IRQ_ADC 3
|
|
#define CRYSTAL_COVE_IRQ_CHGR 4
|
|
#define CRYSTAL_COVE_IRQ_GPIO 5
|
|
#define CRYSTAL_COVE_IRQ_VHDMIOCP 6
|
|
|
|
static const struct resource pwrsrc_resources[] = {
|
|
DEFINE_RES_IRQ_NAMED(CRYSTAL_COVE_IRQ_PWRSRC, "PWRSRC"),
|
|
};
|
|
|
|
static const struct resource thermal_resources[] = {
|
|
DEFINE_RES_IRQ_NAMED(CRYSTAL_COVE_IRQ_THRM, "THERMAL"),
|
|
};
|
|
|
|
static const struct resource bcu_resources[] = {
|
|
DEFINE_RES_IRQ_NAMED(CRYSTAL_COVE_IRQ_BCU, "BCU"),
|
|
};
|
|
|
|
static const struct resource adc_resources[] = {
|
|
DEFINE_RES_IRQ_NAMED(CRYSTAL_COVE_IRQ_ADC, "ADC"),
|
|
};
|
|
|
|
static const struct resource charger_resources[] = {
|
|
DEFINE_RES_IRQ_NAMED(CRYSTAL_COVE_IRQ_CHGR, "CHGR"),
|
|
};
|
|
|
|
static const struct resource gpio_resources[] = {
|
|
DEFINE_RES_IRQ_NAMED(CRYSTAL_COVE_IRQ_GPIO, "GPIO"),
|
|
};
|
|
|
|
static struct mfd_cell crystal_cove_byt_dev[] = {
|
|
{
|
|
.name = "crystal_cove_pwrsrc",
|
|
.num_resources = ARRAY_SIZE(pwrsrc_resources),
|
|
.resources = pwrsrc_resources,
|
|
},
|
|
{
|
|
.name = "crystal_cove_thermal",
|
|
.num_resources = ARRAY_SIZE(thermal_resources),
|
|
.resources = thermal_resources,
|
|
},
|
|
{
|
|
.name = "crystal_cove_bcu",
|
|
.num_resources = ARRAY_SIZE(bcu_resources),
|
|
.resources = bcu_resources,
|
|
},
|
|
{
|
|
.name = "crystal_cove_adc",
|
|
.num_resources = ARRAY_SIZE(adc_resources),
|
|
.resources = adc_resources,
|
|
},
|
|
{
|
|
.name = "crystal_cove_charger",
|
|
.num_resources = ARRAY_SIZE(charger_resources),
|
|
.resources = charger_resources,
|
|
},
|
|
{
|
|
.name = "crystal_cove_gpio",
|
|
.num_resources = ARRAY_SIZE(gpio_resources),
|
|
.resources = gpio_resources,
|
|
},
|
|
{
|
|
.name = "byt_crystal_cove_pmic",
|
|
},
|
|
{
|
|
.name = "crystal_cove_pwm",
|
|
},
|
|
};
|
|
|
|
static struct mfd_cell crystal_cove_cht_dev[] = {
|
|
{
|
|
.name = "crystal_cove_gpio",
|
|
.num_resources = ARRAY_SIZE(gpio_resources),
|
|
.resources = gpio_resources,
|
|
},
|
|
{
|
|
.name = "cht_crystal_cove_pmic",
|
|
},
|
|
{
|
|
.name = "crystal_cove_pwm",
|
|
},
|
|
};
|
|
|
|
static const struct regmap_config crystal_cove_regmap_config = {
|
|
.reg_bits = 8,
|
|
.val_bits = 8,
|
|
|
|
.max_register = CRYSTAL_COVE_MAX_REGISTER,
|
|
.cache_type = REGCACHE_NONE,
|
|
};
|
|
|
|
static const struct regmap_irq crystal_cove_irqs[] = {
|
|
REGMAP_IRQ_REG(CRYSTAL_COVE_IRQ_PWRSRC, 0, BIT(CRYSTAL_COVE_IRQ_PWRSRC)),
|
|
REGMAP_IRQ_REG(CRYSTAL_COVE_IRQ_THRM, 0, BIT(CRYSTAL_COVE_IRQ_THRM)),
|
|
REGMAP_IRQ_REG(CRYSTAL_COVE_IRQ_BCU, 0, BIT(CRYSTAL_COVE_IRQ_BCU)),
|
|
REGMAP_IRQ_REG(CRYSTAL_COVE_IRQ_ADC, 0, BIT(CRYSTAL_COVE_IRQ_ADC)),
|
|
REGMAP_IRQ_REG(CRYSTAL_COVE_IRQ_CHGR, 0, BIT(CRYSTAL_COVE_IRQ_CHGR)),
|
|
REGMAP_IRQ_REG(CRYSTAL_COVE_IRQ_GPIO, 0, BIT(CRYSTAL_COVE_IRQ_GPIO)),
|
|
REGMAP_IRQ_REG(CRYSTAL_COVE_IRQ_VHDMIOCP, 0, BIT(CRYSTAL_COVE_IRQ_VHDMIOCP)),
|
|
};
|
|
|
|
static const struct regmap_irq_chip crystal_cove_irq_chip = {
|
|
.name = "Crystal Cove",
|
|
.irqs = crystal_cove_irqs,
|
|
.num_irqs = ARRAY_SIZE(crystal_cove_irqs),
|
|
.num_regs = 1,
|
|
.status_base = CRYSTAL_COVE_REG_IRQLVL1,
|
|
.mask_base = CRYSTAL_COVE_REG_MIRQLVL1,
|
|
};
|
|
|
|
struct intel_soc_pmic_config intel_soc_pmic_config_byt_crc = {
|
|
.irq_flags = IRQF_TRIGGER_RISING,
|
|
.cell_dev = crystal_cove_byt_dev,
|
|
.n_cell_devs = ARRAY_SIZE(crystal_cove_byt_dev),
|
|
.regmap_config = &crystal_cove_regmap_config,
|
|
.irq_chip = &crystal_cove_irq_chip,
|
|
};
|
|
|
|
struct intel_soc_pmic_config intel_soc_pmic_config_cht_crc = {
|
|
.irq_flags = IRQF_TRIGGER_RISING,
|
|
.cell_dev = crystal_cove_cht_dev,
|
|
.n_cell_devs = ARRAY_SIZE(crystal_cove_cht_dev),
|
|
.regmap_config = &crystal_cove_regmap_config,
|
|
.irq_chip = &crystal_cove_irq_chip,
|
|
};
|