diff options
author | Javier Martinez Canillas <javier.martinez@collabora.co.uk> | 2014-07-04 22:24:04 +0200 |
---|---|---|
committer | Lee Jones <lee.jones@linaro.org> | 2014-07-21 16:54:26 +0100 |
commit | 6f1c1e71d933f58a6248f1681aededdd407f32a8 (patch) | |
tree | 8625163e93481f9b28eb838883b37ebb1f29f85e /drivers/mfd | |
parent | 4eb9560b8ffa854caa7c625a955762d4b43b4841 (diff) | |
download | linux-6f1c1e71d933f58a6248f1681aededdd407f32a8.tar.bz2 |
mfd: max77686: Convert to use regmap_irq
By using the generic IRQ support in the Register map API, it
is possible to get rid max77686-irq.c and simplify the code.
Suggested-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
Reviewed-by: Doug Anderson <dianders@chromium.org>
Tested-by: Doug Anderson <dianders@chromium.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Diffstat (limited to 'drivers/mfd')
-rw-r--r-- | drivers/mfd/Kconfig | 1 | ||||
-rw-r--r-- | drivers/mfd/Makefile | 2 | ||||
-rw-r--r-- | drivers/mfd/max77686-irq.c | 319 | ||||
-rw-r--r-- | drivers/mfd/max77686.c | 97 |
4 files changed, 93 insertions, 326 deletions
diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig index b8d9ca0b68e2..30102042dcaf 100644 --- a/drivers/mfd/Kconfig +++ b/drivers/mfd/Kconfig @@ -384,6 +384,7 @@ config MFD_MAX77686 depends on I2C=y select MFD_CORE select REGMAP_I2C + select REGMAP_IRQ select IRQ_DOMAIN help Say yes here to add support for Maxim Semiconductor MAX77686. diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile index 4e2bc255b8b0..f00148782d9b 100644 --- a/drivers/mfd/Makefile +++ b/drivers/mfd/Makefile @@ -115,7 +115,7 @@ da9063-objs := da9063-core.o da9063-irq.o da9063-i2c.o obj-$(CONFIG_MFD_DA9063) += da9063.o obj-$(CONFIG_MFD_MAX14577) += max14577.o -obj-$(CONFIG_MFD_MAX77686) += max77686.o max77686-irq.o +obj-$(CONFIG_MFD_MAX77686) += max77686.o obj-$(CONFIG_MFD_MAX77693) += max77693.o obj-$(CONFIG_MFD_MAX8907) += max8907.o max8925-objs := max8925-core.o max8925-i2c.o diff --git a/drivers/mfd/max77686-irq.c b/drivers/mfd/max77686-irq.c deleted file mode 100644 index cdc3280e2ec7..000000000000 --- a/drivers/mfd/max77686-irq.c +++ /dev/null @@ -1,319 +0,0 @@ -/* - * max77686-irq.c - Interrupt controller support for MAX77686 - * - * Copyright (C) 2012 Samsung Electronics Co.Ltd - * Chiwoong Byun <woong.byun@samsung.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * 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 - * - * This driver is based on max8997-irq.c - */ - -#include <linux/err.h> -#include <linux/irq.h> -#include <linux/interrupt.h> -#include <linux/gpio.h> -#include <linux/mfd/max77686.h> -#include <linux/mfd/max77686-private.h> -#include <linux/irqdomain.h> -#include <linux/regmap.h> - -enum { - MAX77686_DEBUG_IRQ_INFO = 1 << 0, - MAX77686_DEBUG_IRQ_MASK = 1 << 1, - MAX77686_DEBUG_IRQ_INT = 1 << 2, -}; - -static int debug_mask = 0; -module_param(debug_mask, int, 0); -MODULE_PARM_DESC(debug_mask, "Set debug_mask : 0x0=off 0x1=IRQ_INFO 0x2=IRQ_MASK 0x4=IRQ_INI)"); - -static const u8 max77686_mask_reg[] = { - [PMIC_INT1] = MAX77686_REG_INT1MSK, - [PMIC_INT2] = MAX77686_REG_INT2MSK, - [RTC_INT] = MAX77686_RTC_INTM, -}; - -static struct regmap *max77686_get_regmap(struct max77686_dev *max77686, - enum max77686_irq_source src) -{ - switch (src) { - case PMIC_INT1 ... PMIC_INT2: - return max77686->regmap; - case RTC_INT: - return max77686->rtc_regmap; - default: - return ERR_PTR(-EINVAL); - } -} - -struct max77686_irq_data { - int mask; - enum max77686_irq_source group; -}; - -#define DECLARE_IRQ(idx, _group, _mask) \ - [(idx)] = { .group = (_group), .mask = (_mask) } -static const struct max77686_irq_data max77686_irqs[] = { - DECLARE_IRQ(MAX77686_PMICIRQ_PWRONF, PMIC_INT1, 1 << 0), - DECLARE_IRQ(MAX77686_PMICIRQ_PWRONR, PMIC_INT1, 1 << 1), - DECLARE_IRQ(MAX77686_PMICIRQ_JIGONBF, PMIC_INT1, 1 << 2), - DECLARE_IRQ(MAX77686_PMICIRQ_JIGONBR, PMIC_INT1, 1 << 3), - DECLARE_IRQ(MAX77686_PMICIRQ_ACOKBF, PMIC_INT1, 1 << 4), - DECLARE_IRQ(MAX77686_PMICIRQ_ACOKBR, PMIC_INT1, 1 << 5), - DECLARE_IRQ(MAX77686_PMICIRQ_ONKEY1S, PMIC_INT1, 1 << 6), - DECLARE_IRQ(MAX77686_PMICIRQ_MRSTB, PMIC_INT1, 1 << 7), - DECLARE_IRQ(MAX77686_PMICIRQ_140C, PMIC_INT2, 1 << 0), - DECLARE_IRQ(MAX77686_PMICIRQ_120C, PMIC_INT2, 1 << 1), - DECLARE_IRQ(MAX77686_RTCIRQ_RTC60S, RTC_INT, 1 << 0), - DECLARE_IRQ(MAX77686_RTCIRQ_RTCA1, RTC_INT, 1 << 1), - DECLARE_IRQ(MAX77686_RTCIRQ_RTCA2, RTC_INT, 1 << 2), - DECLARE_IRQ(MAX77686_RTCIRQ_SMPL, RTC_INT, 1 << 3), - DECLARE_IRQ(MAX77686_RTCIRQ_RTC1S, RTC_INT, 1 << 4), - DECLARE_IRQ(MAX77686_RTCIRQ_WTSR, RTC_INT, 1 << 5), -}; - -static void max77686_irq_lock(struct irq_data *data) -{ - struct max77686_dev *max77686 = irq_get_chip_data(data->irq); - - if (debug_mask & MAX77686_DEBUG_IRQ_MASK) - pr_info("%s\n", __func__); - - mutex_lock(&max77686->irqlock); -} - -static void max77686_irq_sync_unlock(struct irq_data *data) -{ - struct max77686_dev *max77686 = irq_get_chip_data(data->irq); - int i; - - for (i = 0; i < MAX77686_IRQ_GROUP_NR; i++) { - u8 mask_reg = max77686_mask_reg[i]; - struct regmap *map = max77686_get_regmap(max77686, i); - - if (debug_mask & MAX77686_DEBUG_IRQ_MASK) - pr_debug("%s: mask_reg[%d]=0x%x, cur=0x%x\n", - __func__, i, mask_reg, max77686->irq_masks_cur[i]); - - if (mask_reg == MAX77686_REG_INVALID || - IS_ERR_OR_NULL(map)) - continue; - - max77686->irq_masks_cache[i] = max77686->irq_masks_cur[i]; - - regmap_write(map, max77686_mask_reg[i], - max77686->irq_masks_cur[i]); - } - - mutex_unlock(&max77686->irqlock); -} - -static const inline struct max77686_irq_data *to_max77686_irq(int irq) -{ - struct irq_data *data = irq_get_irq_data(irq); - return &max77686_irqs[data->hwirq]; -} - -static void max77686_irq_mask(struct irq_data *data) -{ - struct max77686_dev *max77686 = irq_get_chip_data(data->irq); - const struct max77686_irq_data *irq_data = to_max77686_irq(data->irq); - - max77686->irq_masks_cur[irq_data->group] |= irq_data->mask; - - if (debug_mask & MAX77686_DEBUG_IRQ_MASK) - pr_info("%s: group=%d, cur=0x%x\n", - __func__, irq_data->group, - max77686->irq_masks_cur[irq_data->group]); -} - -static void max77686_irq_unmask(struct irq_data *data) -{ - struct max77686_dev *max77686 = irq_get_chip_data(data->irq); - const struct max77686_irq_data *irq_data = to_max77686_irq(data->irq); - - max77686->irq_masks_cur[irq_data->group] &= ~irq_data->mask; - - if (debug_mask & MAX77686_DEBUG_IRQ_MASK) - pr_info("%s: group=%d, cur=0x%x\n", - __func__, irq_data->group, - max77686->irq_masks_cur[irq_data->group]); -} - -static struct irq_chip max77686_irq_chip = { - .name = "max77686", - .irq_bus_lock = max77686_irq_lock, - .irq_bus_sync_unlock = max77686_irq_sync_unlock, - .irq_mask = max77686_irq_mask, - .irq_unmask = max77686_irq_unmask, -}; - -static irqreturn_t max77686_irq_thread(int irq, void *data) -{ - struct max77686_dev *max77686 = data; - unsigned int irq_reg[MAX77686_IRQ_GROUP_NR] = {}; - unsigned int irq_src; - int ret; - int i, cur_irq; - - ret = regmap_read(max77686->regmap, MAX77686_REG_INTSRC, &irq_src); - if (ret < 0) { - dev_err(max77686->dev, "Failed to read interrupt source: %d\n", - ret); - return IRQ_NONE; - } - - if (debug_mask & MAX77686_DEBUG_IRQ_INT) - pr_info("%s: irq_src=0x%x\n", __func__, irq_src); - - if (irq_src == MAX77686_IRQSRC_PMIC) { - ret = regmap_bulk_read(max77686->regmap, - MAX77686_REG_INT1, irq_reg, 2); - if (ret < 0) { - dev_err(max77686->dev, "Failed to read interrupt source: %d\n", - ret); - return IRQ_NONE; - } - - if (debug_mask & MAX77686_DEBUG_IRQ_INT) - pr_info("%s: int1=0x%x, int2=0x%x\n", __func__, - irq_reg[PMIC_INT1], irq_reg[PMIC_INT2]); - } - - if (irq_src & MAX77686_IRQSRC_RTC) { - ret = regmap_read(max77686->rtc_regmap, - MAX77686_RTC_INT, &irq_reg[RTC_INT]); - if (ret < 0) { - dev_err(max77686->dev, "Failed to read interrupt source: %d\n", - ret); - return IRQ_NONE; - } - - if (debug_mask & MAX77686_DEBUG_IRQ_INT) - pr_info("%s: rtc int=0x%x\n", __func__, - irq_reg[RTC_INT]); - - } - - for (i = 0; i < MAX77686_IRQ_GROUP_NR; i++) - irq_reg[i] &= ~max77686->irq_masks_cur[i]; - - for (i = 0; i < MAX77686_IRQ_NR; i++) { - if (irq_reg[max77686_irqs[i].group] & max77686_irqs[i].mask) { - cur_irq = irq_find_mapping(max77686->irq_domain, i); - if (cur_irq) - handle_nested_irq(cur_irq); - } - } - - return IRQ_HANDLED; -} - -static int max77686_irq_domain_map(struct irq_domain *d, unsigned int irq, - irq_hw_number_t hw) -{ - struct max77686_dev *max77686 = d->host_data; - - irq_set_chip_data(irq, max77686); - irq_set_chip_and_handler(irq, &max77686_irq_chip, handle_edge_irq); - irq_set_nested_thread(irq, 1); -#ifdef CONFIG_ARM - set_irq_flags(irq, IRQF_VALID); -#else - irq_set_noprobe(irq); -#endif - return 0; -} - -static struct irq_domain_ops max77686_irq_domain_ops = { - .map = max77686_irq_domain_map, -}; - -int max77686_irq_init(struct max77686_dev *max77686) -{ - struct irq_domain *domain; - int i; - int ret; - int val; - struct regmap *map; - - mutex_init(&max77686->irqlock); - - if (max77686->irq_gpio && !max77686->irq) { - max77686->irq = gpio_to_irq(max77686->irq_gpio); - - if (debug_mask & MAX77686_DEBUG_IRQ_INT) { - ret = gpio_request(max77686->irq_gpio, "pmic_irq"); - if (ret < 0) { - dev_err(max77686->dev, - "Failed to request gpio %d with ret:" - "%d\n", max77686->irq_gpio, ret); - return IRQ_NONE; - } - - gpio_direction_input(max77686->irq_gpio); - val = gpio_get_value(max77686->irq_gpio); - gpio_free(max77686->irq_gpio); - pr_info("%s: gpio_irq=%x\n", __func__, val); - } - } - - if (!max77686->irq) { - dev_err(max77686->dev, "irq is not specified\n"); - return -ENODEV; - } - - /* Mask individual interrupt sources */ - for (i = 0; i < MAX77686_IRQ_GROUP_NR; i++) { - max77686->irq_masks_cur[i] = 0xff; - max77686->irq_masks_cache[i] = 0xff; - map = max77686_get_regmap(max77686, i); - - if (IS_ERR_OR_NULL(map)) - continue; - if (max77686_mask_reg[i] == MAX77686_REG_INVALID) - continue; - - regmap_write(map, max77686_mask_reg[i], 0xff); - } - domain = irq_domain_add_linear(NULL, MAX77686_IRQ_NR, - &max77686_irq_domain_ops, max77686); - if (!domain) { - dev_err(max77686->dev, "could not create irq domain\n"); - return -ENODEV; - } - max77686->irq_domain = domain; - - ret = request_threaded_irq(max77686->irq, NULL, max77686_irq_thread, - IRQF_TRIGGER_FALLING | IRQF_ONESHOT, - "max77686-irq", max77686); - - if (ret) - dev_err(max77686->dev, "Failed to request IRQ %d: %d\n", - max77686->irq, ret); - - - if (debug_mask & MAX77686_DEBUG_IRQ_INFO) - pr_info("%s-\n", __func__); - - return 0; -} - -void max77686_irq_exit(struct max77686_dev *max77686) -{ - if (max77686->irq) - free_irq(max77686->irq, max77686); -} diff --git a/drivers/mfd/max77686.c b/drivers/mfd/max77686.c index ce869acf27ae..3cb41d02cd3d 100644 --- a/drivers/mfd/max77686.c +++ b/drivers/mfd/max77686.c @@ -25,6 +25,8 @@ #include <linux/export.h> #include <linux/slab.h> #include <linux/i2c.h> +#include <linux/irq.h> +#include <linux/interrupt.h> #include <linux/pm_runtime.h> #include <linux/module.h> #include <linux/mfd/core.h> @@ -46,6 +48,54 @@ static struct regmap_config max77686_regmap_config = { .val_bits = 8, }; +static struct regmap_config max77686_rtc_regmap_config = { + .reg_bits = 8, + .val_bits = 8, +}; + +static const struct regmap_irq max77686_irqs[] = { + /* INT1 interrupts */ + { .reg_offset = 0, .mask = MAX77686_INT1_PWRONF_MSK, }, + { .reg_offset = 0, .mask = MAX77686_INT1_PWRONR_MSK, }, + { .reg_offset = 0, .mask = MAX77686_INT1_JIGONBF_MSK, }, + { .reg_offset = 0, .mask = MAX77686_INT1_JIGONBR_MSK, }, + { .reg_offset = 0, .mask = MAX77686_INT1_ACOKBF_MSK, }, + { .reg_offset = 0, .mask = MAX77686_INT1_ACOKBR_MSK, }, + { .reg_offset = 0, .mask = MAX77686_INT1_ONKEY1S_MSK, }, + { .reg_offset = 0, .mask = MAX77686_INT1_MRSTB_MSK, }, + /* INT2 interrupts */ + { .reg_offset = 1, .mask = MAX77686_INT2_140C_MSK, }, + { .reg_offset = 1, .mask = MAX77686_INT2_120C_MSK, }, +}; + +static const struct regmap_irq_chip max77686_irq_chip = { + .name = "max77686-pmic", + .status_base = MAX77686_REG_INT1, + .mask_base = MAX77686_REG_INT1MSK, + .num_regs = 2, + .irqs = max77686_irqs, + .num_irqs = ARRAY_SIZE(max77686_irqs), +}; + +static const struct regmap_irq max77686_rtc_irqs[] = { + /* RTC interrupts */ + { .reg_offset = 0, .mask = MAX77686_RTCINT_RTC60S_MSK, }, + { .reg_offset = 0, .mask = MAX77686_RTCINT_RTCA1_MSK, }, + { .reg_offset = 0, .mask = MAX77686_RTCINT_RTCA2_MSK, }, + { .reg_offset = 0, .mask = MAX77686_RTCINT_SMPL_MSK, }, + { .reg_offset = 0, .mask = MAX77686_RTCINT_RTC1S_MSK, }, + { .reg_offset = 0, .mask = MAX77686_RTCINT_WTSR_MSK, }, +}; + +static const struct regmap_irq_chip max77686_rtc_irq_chip = { + .name = "max77686-rtc", + .status_base = MAX77686_RTC_INT, + .mask_base = MAX77686_RTC_INTM, + .num_regs = 1, + .irqs = max77686_rtc_irqs, + .num_irqs = ARRAY_SIZE(max77686_rtc_irqs), +}; + #ifdef CONFIG_OF static const struct of_device_id max77686_pmic_dt_match[] = { {.compatible = "maxim,max77686", .data = NULL}, @@ -101,7 +151,6 @@ static int max77686_i2c_probe(struct i2c_client *i2c, max77686->type = id->driver_data; max77686->wakeup = pdata->wakeup; - max77686->irq_gpio = pdata->irq_gpio; max77686->irq = i2c->irq; max77686->regmap = devm_regmap_init_i2c(i2c, &max77686_regmap_config); @@ -117,8 +166,7 @@ static int max77686_i2c_probe(struct i2c_client *i2c, dev_err(max77686->dev, "device not found on this channel (this is not an error)\n"); return -ENODEV; - } else - dev_info(max77686->dev, "device found\n"); + } max77686->rtc = i2c_new_dummy(i2c->adapter, I2C_ADDR_RTC); if (!max77686->rtc) { @@ -127,15 +175,48 @@ static int max77686_i2c_probe(struct i2c_client *i2c, } i2c_set_clientdata(max77686->rtc, max77686); - max77686_irq_init(max77686); + max77686->rtc_regmap = devm_regmap_init_i2c(max77686->rtc, + &max77686_rtc_regmap_config); + if (IS_ERR(max77686->rtc_regmap)) { + ret = PTR_ERR(max77686->rtc_regmap); + dev_err(max77686->dev, "failed to allocate RTC regmap: %d\n", + ret); + goto err_unregister_i2c; + } + + ret = regmap_add_irq_chip(max77686->regmap, max77686->irq, + IRQF_TRIGGER_FALLING | IRQF_ONESHOT | + IRQF_SHARED, 0, &max77686_irq_chip, + &max77686->irq_data); + if (ret != 0) { + dev_err(&i2c->dev, "failed to add PMIC irq chip: %d\n", ret); + goto err_unregister_i2c; + } + ret = regmap_add_irq_chip(max77686->rtc_regmap, max77686->irq, + IRQF_TRIGGER_FALLING | IRQF_ONESHOT | + IRQF_SHARED, 0, &max77686_rtc_irq_chip, + &max77686->rtc_irq_data); + if (ret != 0) { + dev_err(&i2c->dev, "failed to add RTC irq chip: %d\n", ret); + goto err_del_irqc; + } ret = mfd_add_devices(max77686->dev, -1, max77686_devs, ARRAY_SIZE(max77686_devs), NULL, 0, NULL); if (ret < 0) { - mfd_remove_devices(max77686->dev); - i2c_unregister_device(max77686->rtc); + dev_err(&i2c->dev, "failed to add MFD devices: %d\n", ret); + goto err_del_rtc_irqc; } + return 0; + +err_del_rtc_irqc: + regmap_del_irq_chip(max77686->irq, max77686->rtc_irq_data); +err_del_irqc: + regmap_del_irq_chip(max77686->irq, max77686->irq_data); +err_unregister_i2c: + i2c_unregister_device(max77686->rtc); + return ret; } @@ -144,6 +225,10 @@ static int max77686_i2c_remove(struct i2c_client *i2c) struct max77686_dev *max77686 = i2c_get_clientdata(i2c); mfd_remove_devices(max77686->dev); + + regmap_del_irq_chip(max77686->irq, max77686->rtc_irq_data); + regmap_del_irq_chip(max77686->irq, max77686->irq_data); + i2c_unregister_device(max77686->rtc); return 0; |