On Thu, 05 Jul 2018, Matti Vaittinen wrote: > ROHM BD71837 PMIC MFD driver providing interrupts and support > for three subsystems: > - clk > - Regulators > - input/power-key > > Signed-off-by: Matti Vaittinen <matti.vaittinen@xxxxxxxxxxxxxxxxx> > --- > drivers/mfd/Kconfig | 13 ++ > drivers/mfd/Makefile | 1 + > drivers/mfd/bd71837.c | 215 ++++++++++++++++++++++++ > include/linux/mfd/bd71837.h | 391 ++++++++++++++++++++++++++++++++++++++++++++ > 4 files changed, 620 insertions(+) > create mode 100644 drivers/mfd/bd71837.c > create mode 100644 include/linux/mfd/bd71837.h > > diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig > index b860eb5aa194..d01a279f5e4a 100644 > --- a/drivers/mfd/Kconfig > +++ b/drivers/mfd/Kconfig > @@ -1787,6 +1787,19 @@ config MFD_STW481X > in various ST Microelectronics and ST-Ericsson embedded > Nomadik series. > > +config MFD_BD71837 It's be nice if you prefix this with the manufacturer. Rohm? > + tristate "BD71837 Power Management chip" Again, missing manufacturer. This should also be "Power Management IC" > + depends on I2C=y > + depends on OF > + select REGMAP_I2C > + select REGMAP_IRQ > + select MFD_CORE > + help > + Select this option to get support for the ROHM BD71837 > + Power Management chips. BD71837 is designed to power processors like "chips" is slang. Should be "ICs". > + NXP i.MX8. It contains 8 BUCK outputs and 7 LDOs, voltage monitoring > + and emergency shut down as well as 32,768KHz clock output. > + > config MFD_STM32_LPTIMER > tristate "Support for STM32 Low-Power Timer" > depends on (ARCH_STM32 && OF) || COMPILE_TEST > diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile > index e9fd20dba18d..09dc9eb3782c 100644 > --- a/drivers/mfd/Makefile > +++ b/drivers/mfd/Makefile > @@ -227,4 +227,5 @@ obj-$(CONFIG_MFD_STM32_TIMERS) += stm32-timers.o > obj-$(CONFIG_MFD_MXS_LRADC) += mxs-lradc.o > obj-$(CONFIG_MFD_SC27XX_PMIC) += sprd-sc27xx-spi.o > obj-$(CONFIG_RAVE_SP_CORE) += rave-sp.o > +obj-$(CONFIG_MFD_BD71837) += bd71837.o > > diff --git a/drivers/mfd/bd71837.c b/drivers/mfd/bd71837.c rohm-bd71837.c would be nicer. > new file mode 100644 > index 000000000000..677097bcea17 > --- /dev/null > +++ b/drivers/mfd/bd71837.c > @@ -0,0 +1,215 @@ > +// SPDX-License-Identifier: GPL-2.0-or-later '\n' here please. > +// Copyright (C) 2018 ROHM Semiconductors '\n' here please. > +// bd71837.c -- ROHM BD71837MWV mfd driver Remove the filename -- they have a habit of becoming incorrect. Also, and 'MFD driver' isn't a thing -- this is a PMIC driver. > +// Datasheet available from > +// https://www.rohm.com/datasheet/BD71837MWV/bd71837mwv-e > + > +#include <linux/i2c.h> > +#include <linux/input.h> > +#include <linux/interrupt.h> > +#include <linux/mfd/bd71837.h> > +#include <linux/mfd/core.h> > +#include <linux/module.h> > +#include <linux/regmap.h> > +#include <linux/gpio_keys.h> Alphabetical please. > +static struct gpio_keys_button btns[] = { > + { > + .code = KEY_POWER, > + .gpio = -1, > + .type = EV_KEY, > + }, > +}; Does this need to be an array? > +static struct gpio_keys_platform_data bd718xx_powerkey_data = { > + .buttons = &btns[0], Why not just "btns"? Also, I don't see any reason not to just call this 'buttons'. Or even, 'button' if there will only ever be one of them. > + .nbuttons = ARRAY_SIZE(btns), > + .name = "bd718xx-pwrkey", > +}; > + > +static struct mfd_cell bd71837_mfd_cells[] = { > + { > + .name = "bd71837-clk", > + }, { > + .name = "gpio-keys", > + .platform_data = &bd718xx_powerkey_data, > + .pdata_size = sizeof(bd718xx_powerkey_data), > + }, { > + .name = "bd71837-pmic", > + }, > +}; Place the one line entries on one line, like this: { .name = "bd71837-pmic", }, ... and if ordering is not important, place them at the bottom. > +static const struct regmap_irq bd71837_irqs[] = { > + REGMAP_IRQ_REG(BD71837_INT_SWRST, 0, BD71837_INT_SWRST_MASK), > + REGMAP_IRQ_REG(BD71837_INT_PWRBTN_S, 0, BD71837_INT_PWRBTN_S_MASK), > + REGMAP_IRQ_REG(BD71837_INT_PWRBTN_L, 0, BD71837_INT_PWRBTN_L_MASK), > + REGMAP_IRQ_REG(BD71837_INT_PWRBTN, 0, BD71837_INT_PWRBTN_MASK), > + REGMAP_IRQ_REG(BD71837_INT_WDOG, 0, BD71837_INT_WDOG_MASK), > + REGMAP_IRQ_REG(BD71837_INT_ON_REQ, 0, BD71837_INT_ON_REQ_MASK), > + REGMAP_IRQ_REG(BD71837_INT_STBY_REQ, 0, BD71837_INT_STBY_REQ_MASK), > +}; > + > +static struct regmap_irq_chip bd71837_irq_chip = { > + .name = "bd71837-irq", > + .irqs = bd71837_irqs, > + .num_irqs = ARRAY_SIZE(bd71837_irqs), > + .num_regs = 1, > + .irq_reg_stride = 1, > + .status_base = BD71837_REG_IRQ, > + .mask_base = BD71837_REG_MIRQ, > + .ack_base = BD71837_REG_IRQ, > + .init_ack_masked = true, > + .mask_invert = false, > +}; > + > +static const struct regmap_range pmic_status_range = { > + .range_min = BD71837_REG_IRQ, > + .range_max = BD71837_REG_POW_STATE, > +}; > + > +static const struct regmap_access_table volatile_regs = { > + .yes_ranges = &pmic_status_range, > + .n_yes_ranges = 1, > +}; > + > +static const struct regmap_config bd71837_regmap_config = { > + .reg_bits = 8, > + .val_bits = 8, > + .volatile_table = &volatile_regs, > + .max_register = BD71837_MAX_REGISTER - 1, > + .cache_type = REGCACHE_RBTREE, > +}; > + > +static const struct of_device_id bd71837_of_match[] = { > + { .compatible = "rohm,bd71837", }, > + { } > +}; > +MODULE_DEVICE_TABLE(of, bd71837_of_match); > + > +static int bd71837_i2c_probe(struct i2c_client *i2c, > + const struct i2c_device_id *id) > +{ > + struct bd71837 *bd71837; > + struct bd71837_board *board_info; > + int ret = -EINVAL; I'd prefer it if you set the error at the location it happened for readability. > + bd71837 = devm_kzalloc(&i2c->dev, sizeof(struct bd71837), GFP_KERNEL); > + Drop this line. > + if (!bd71837) > + return -ENOMEM; > + > + board_info = dev_get_platdata(&i2c->dev); > + > + if (!board_info) > + bd71837->chip_irq = i2c->irq; > + else > + bd71837->chip_irq = board_info->gpio_intr; > + > + if (!bd71837->chip_irq) { > + dev_err(&i2c->dev, "No IRQ configured\n"); > + goto err_out; > + } > + > + bd71837->dev = &i2c->dev; > + bd71837->i2c_client = i2c; > + i2c_set_clientdata(i2c, bd71837); > + > + bd71837->regmap = devm_regmap_init_i2c(i2c, &bd71837_regmap_config); > + if (IS_ERR(bd71837->regmap)) { > + ret = PTR_ERR(bd71837->regmap); > + dev_err(&i2c->dev, "regmap initialization failed\n"); > + goto err_out; > + } > + > + ret = bd71837_reg_read(bd71837, BD71837_REG_REV); > + if (ret < 0) { Is 0 return a successful read? I suggest that it isn't. > + dev_err(&i2c->dev, "Read BD71837_REG_DEVICE failed\n"); > + goto err_out; > + } > + > + ret = devm_regmap_add_irq_chip(&i2c->dev, bd71837->regmap, > + bd71837->chip_irq, IRQF_ONESHOT, 0, > + &bd71837_irq_chip, &bd71837->irq_data); > + if (ret < 0) { Is a >0 return valid? If not, perhaps "if (ret)" would be better. > + dev_err(&i2c->dev, "Failed to add irq_chip\n"); > + goto err_out; > + } > + > + ret = regmap_update_bits(bd71837->regmap, > + BD71837_REG_PWRONCONFIG0, > + BD718XX_PWRBTN_PRESS_DURATION_MASK, > + BD718XX_PWRBTN_SHORT_PRESS_10MS); > + if (ret < 0) { As above. > + dev_err(&i2c->dev, "Failed to configure button short press timeout\n"); > + goto err_out; > + } > + > + /* > + * According to BD71847 datasheet the HW default for long press > + * detection is 10ms. So lets change it to 10 sec so we can actually > + * get the short push and allow gracefull shut down > + */ I don't think this comment is necessary. If anything it only needs to say "Configure long press to 10 seconds". And if you do that, please add one for short press too. > + ret = regmap_update_bits(bd71837->regmap, > + BD71837_REG_PWRONCONFIG1, > + BD718XX_PWRBTN_PRESS_DURATION_MASK, > + BD718XX_PWRBTN_LONG_PRESS_10S); > + > + if (ret < 0) { > + dev_err(&i2c->dev, "Failed to configure button long press timeout\n"); > + goto err_out; > + } > + > + btns[0].irq = regmap_irq_get_virq(bd71837->irq_data, > + BD71837_INT_PWRBTN_S); > + > + if (btns[0].irq < 0) { > + ret = btns[0].irq; > + dev_err(&i2c->dev, "Failed to get the IRQ\n"); > + goto err_out; No unwinding to be done, just return directly and save yourself an superflouous goto. > + } > + > + ret = devm_mfd_add_devices(bd71837->dev, PLATFORM_DEVID_AUTO, > + bd71837_mfd_cells, > + ARRAY_SIZE(bd71837_mfd_cells), NULL, 0, > + regmap_irq_get_domain(bd71837->irq_data)); > + if (ret) > + dev_err(&i2c->dev, "Failed to create subdevices\n"); > +err_out: > + > + return ret; > +} > + > +static const struct i2c_device_id bd71837_i2c_id[] = { > + { .name = "bd71837", }, > + { } > +}; > +MODULE_DEVICE_TABLE(i2c, bd71837_i2c_id); You shouldn't need this table anymore. See da10c06a044b ("i2c: Make I2C ID tables non-mandatory for DT'ed devices") > +static struct i2c_driver bd71837_i2c_driver = { > + .driver = { > + .name = "bd71837-mfd", And "MFD" isn't really a thing. It's more common to just mention the board name, or something like 'rohm-bd7183'. > + .of_match_table = bd71837_of_match, > + }, > + .probe = bd71837_i2c_probe, > + .id_table = bd71837_i2c_id, > +}; > + > +static int __init bd71837_i2c_init(void) > +{ > + return i2c_add_driver(&bd71837_i2c_driver); > +} > +/* > + * init early so consumer devices can complete system boot > + */ This is a single line commit. Please use the correct format. /* Single line comment */ > +subsys_initcall(bd71837_i2c_init); > + > +static void __exit bd71837_i2c_exit(void) > +{ > + i2c_del_driver(&bd71837_i2c_driver); > +} > +module_exit(bd71837_i2c_exit); > + > +MODULE_AUTHOR("Matti Vaittinen <matti.vaittinen@xxxxxxxxxxxxxxxxx>"); > +MODULE_DESCRIPTION("BD71837 chip multi-function driver"); 'PMIC' or 'Power Management IC' rather than MFD. > +MODULE_LICENSE("GPL"); > diff --git a/include/linux/mfd/bd71837.h b/include/linux/mfd/bd71837.h > new file mode 100644 > index 000000000000..10b0dfe90f27 > --- /dev/null > +++ b/include/linux/mfd/bd71837.h > @@ -0,0 +1,391 @@ > +/* SPDX-License-Identifier: GPL-2.0-or-later */ I thought these were meant to use C++ (//) comments? > +/* Copyright (C) 2018 ROHM Semiconductors */ > + > +/* > + * ROHM BD71837MWV header file > + */ If you prefix the mentions of (BD,bd)71837 with (ROHM,rohm) then this comment becomes redundant and you can remove it. > +#ifndef __LINUX_MFD_BD71837_H__ > +#define __LINUX_MFD_BD71837_H__ > + > +#include <linux/regmap.h> > + > +enum { > + BD71837_BUCK1 = 0, > + BD71837_BUCK2, > + BD71837_BUCK3, > + BD71837_BUCK4, > + BD71837_BUCK5, > + BD71837_BUCK6, > + BD71837_BUCK7, > + BD71837_BUCK8, > + BD71837_LDO1, > + BD71837_LDO2, > + BD71837_LDO3, > + BD71837_LDO4, > + BD71837_LDO5, > + BD71837_LDO6, > + BD71837_LDO7, > + BD71837_REGULATOR_CNT, > +}; > + > +#define BD71837_BUCK1_VOLTAGE_NUM 0x40 > +#define BD71837_BUCK2_VOLTAGE_NUM 0x40 > +#define BD71837_BUCK3_VOLTAGE_NUM 0x40 > +#define BD71837_BUCK4_VOLTAGE_NUM 0x40 > + > +#define BD71837_BUCK5_VOLTAGE_NUM 0x08 > +#define BD71837_BUCK6_VOLTAGE_NUM 0x04 > +#define BD71837_BUCK7_VOLTAGE_NUM 0x08 > +#define BD71837_BUCK8_VOLTAGE_NUM 0x40 > + > +#define BD71837_LDO1_VOLTAGE_NUM 0x04 > +#define BD71837_LDO2_VOLTAGE_NUM 0x02 > +#define BD71837_LDO3_VOLTAGE_NUM 0x10 > +#define BD71837_LDO4_VOLTAGE_NUM 0x10 > +#define BD71837_LDO5_VOLTAGE_NUM 0x10 > +#define BD71837_LDO6_VOLTAGE_NUM 0x10 > +#define BD71837_LDO7_VOLTAGE_NUM 0x10 > + > +enum { > + BD71837_REG_REV = 0x00, > + BD71837_REG_SWRESET = 0x01, > + BD71837_REG_I2C_DEV = 0x02, > + BD71837_REG_PWRCTRL0 = 0x03, > + BD71837_REG_PWRCTRL1 = 0x04, > + BD71837_REG_BUCK1_CTRL = 0x05, > + BD71837_REG_BUCK2_CTRL = 0x06, > + BD71837_REG_BUCK3_CTRL = 0x07, > + BD71837_REG_BUCK4_CTRL = 0x08, > + BD71837_REG_BUCK5_CTRL = 0x09, > + BD71837_REG_BUCK6_CTRL = 0x0A, > + BD71837_REG_BUCK7_CTRL = 0x0B, > + BD71837_REG_BUCK8_CTRL = 0x0C, > + BD71837_REG_BUCK1_VOLT_RUN = 0x0D, > + BD71837_REG_BUCK1_VOLT_IDLE = 0x0E, > + BD71837_REG_BUCK1_VOLT_SUSP = 0x0F, > + BD71837_REG_BUCK2_VOLT_RUN = 0x10, > + BD71837_REG_BUCK2_VOLT_IDLE = 0x11, > + BD71837_REG_BUCK3_VOLT_RUN = 0x12, > + BD71837_REG_BUCK4_VOLT_RUN = 0x13, > + BD71837_REG_BUCK5_VOLT = 0x14, > + BD71837_REG_BUCK6_VOLT = 0x15, > + BD71837_REG_BUCK7_VOLT = 0x16, > + BD71837_REG_BUCK8_VOLT = 0x17, > + BD71837_REG_LDO1_VOLT = 0x18, > + BD71837_REG_LDO2_VOLT = 0x19, > + BD71837_REG_LDO3_VOLT = 0x1A, > + BD71837_REG_LDO4_VOLT = 0x1B, > + BD71837_REG_LDO5_VOLT = 0x1C, > + BD71837_REG_LDO6_VOLT = 0x1D, > + BD71837_REG_LDO7_VOLT = 0x1E, > + BD71837_REG_TRANS_COND0 = 0x1F, > + BD71837_REG_TRANS_COND1 = 0x20, > + BD71837_REG_VRFAULTEN = 0x21, > + BD71837_REG_MVRFLTMASK0 = 0x22, > + BD71837_REG_MVRFLTMASK1 = 0x23, > + BD71837_REG_MVRFLTMASK2 = 0x24, > + BD71837_REG_RCVCFG = 0x25, > + BD71837_REG_RCVNUM = 0x26, > + BD71837_REG_PWRONCONFIG0 = 0x27, > + BD71837_REG_PWRONCONFIG1 = 0x28, > + BD71837_REG_RESETSRC = 0x29, > + BD71837_REG_MIRQ = 0x2A, > + BD71837_REG_IRQ = 0x2B, > + BD71837_REG_IN_MON = 0x2C, > + BD71837_REG_POW_STATE = 0x2D, > + BD71837_REG_OUT32K = 0x2E, > + BD71837_REG_REGLOCK = 0x2F, > + BD71837_REG_OTPVER = 0xFF, > + BD71837_MAX_REGISTER = 0x100, > +}; > + > +#define REGLOCK_PWRSEQ 0x1 > +#define REGLOCK_VREG 0x10 > + > +/* Generic BUCK control masks */ > +#define BD71837_BUCK_SEL 0x02 > +#define BD71837_BUCK_EN 0x01 > +#define BD71837_BUCK_RUN_ON 0x04 > + > +/* Generic LDO masks */ > +#define BD71837_LDO_SEL 0x80 > +#define BD71837_LDO_EN 0x40 > + > +/* BD71837 BUCK ramp rate CTRL reg bits */ > +#define BUCK_RAMPRATE_MASK 0xC0 > +#define BUCK_RAMPRATE_10P00MV 0x0 > +#define BUCK_RAMPRATE_5P00MV 0x1 > +#define BUCK_RAMPRATE_2P50MV 0x2 > +#define BUCK_RAMPRATE_1P25MV 0x3 > + > +/* BD71837_REG_BUCK1_VOLT_RUN bits */ > +#define BUCK1_RUN_MASK 0x3F > +#define BUCK1_RUN_DEFAULT 0x14 > + > +/* BD71837_REG_BUCK1_VOLT_SUSP bits */ > +#define BUCK1_SUSP_MASK 0x3F > +#define BUCK1_SUSP_DEFAULT 0x14 > + > +/* BD71837_REG_BUCK1_VOLT_IDLE bits */ > +#define BUCK1_IDLE_MASK 0x3F > +#define BUCK1_IDLE_DEFAULT 0x14 > + > +/* BD71837_REG_BUCK2_VOLT_RUN bits */ > +#define BUCK2_RUN_MASK 0x3F > +#define BUCK2_RUN_DEFAULT 0x1E > + > +/* BD71837_REG_BUCK2_VOLT_IDLE bits */ > +#define BUCK2_IDLE_MASK 0x3F > +#define BUCK2_IDLE_DEFAULT 0x14 > + > +/* BD71837_REG_BUCK3_VOLT_RUN bits */ > +#define BUCK3_RUN_MASK 0x3F > +#define BUCK3_RUN_DEFAULT 0x1E > + > +/* BD71837_REG_BUCK4_VOLT_RUN bits */ > +#define BUCK4_RUN_MASK 0x3F > +#define BUCK4_RUN_DEFAULT 0x1E > + > +/* BD71837_REG_BUCK5_VOLT bits */ > +#define BUCK5_MASK 0x07 > +#define BUCK5_DEFAULT 0x02 > + > +/* BD71837_REG_BUCK6_VOLT bits */ > +#define BUCK6_MASK 0x03 > +#define BUCK6_DEFAULT 0x03 > + > +/* BD71837_REG_BUCK7_VOLT bits */ > +#define BUCK7_MASK 0x07 > +#define BUCK7_DEFAULT 0x03 > + > +/* BD71837_REG_BUCK8_VOLT bits */ > +#define BUCK8_MASK 0x3F > +#define BUCK8_DEFAULT 0x1E > + > +/* BD71837_REG_IRQ bits */ > +#define IRQ_SWRST 0x40 > +#define IRQ_PWRON_S 0x20 > +#define IRQ_PWRON_L 0x10 > +#define IRQ_PWRON 0x08 > +#define IRQ_WDOG 0x04 > +#define IRQ_ON_REQ 0x02 > +#define IRQ_STBY_REQ 0x01 > + > +/* BD71837_REG_OUT32K bits */ > +#define BD71837_OUT32K_EN 0x01 > + > +/* BD71837 gated clock rate */ > +#define BD71837_CLK_RATE 32768 > + > +/* BD71837 irqs */ > +enum { > + BD71837_INT_STBY_REQ, > + BD71837_INT_ON_REQ, > + BD71837_INT_WDOG, > + BD71837_INT_PWRBTN, > + BD71837_INT_PWRBTN_L, > + BD71837_INT_PWRBTN_S, > + BD71837_INT_SWRST > +}; > + > +/* BD71837 interrupt masks */ > +#define BD71837_INT_SWRST_MASK 0x40 > +#define BD71837_INT_PWRBTN_S_MASK 0x20 > +#define BD71837_INT_PWRBTN_L_MASK 0x10 > +#define BD71837_INT_PWRBTN_MASK 0x8 > +#define BD71837_INT_WDOG_MASK 0x4 > +#define BD71837_INT_ON_REQ_MASK 0x2 > +#define BD71837_INT_STBY_REQ_MASK 0x1 > + > +/* BD71837_REG_LDO1_VOLT bits */ > +#define LDO1_MASK 0x03 > + > +/* BD71837_REG_LDO1_VOLT bits */ > +#define LDO2_MASK 0x20 > + > +/* BD71837_REG_LDO3_VOLT bits */ > +#define LDO3_MASK 0x0F > + > +/* BD71837_REG_LDO4_VOLT bits */ > +#define LDO4_MASK 0x0F > + > +/* BD71837_REG_LDO5_VOLT bits */ > +#define LDO5_MASK 0x0F > + > +/* BD71837_REG_LDO6_VOLT bits */ > +#define LDO6_MASK 0x0F > + > +/* BD71837_REG_LDO7_VOLT bits */ > +#define LDO7_MASK 0x0F > + > +/* Register write induced reset settings */ > + > +/* Even though the bit zero is not SWRESET type we still want to write zero > + * to it when changing type. Bit zero is 'SWRESET' trigger bit and if we > + * write 1 to it we will trigger the action. So always write 0 to it when > + * changning SWRESET action - no matter what we read from it. > + */ Please use the correct format for multi-line comments. Hint: The first line should be empty. > +#define BD71837_SWRESET_TYPE_MASK 7 > +#define BD71837_SWRESET_TYPE_DISABLED 0 > +#define BD71837_SWRESET_TYPE_COLD 4 > +#define BD71837_SWRESET_TYPE_WARM 6 > + > +#define BD71837_SWRESET_RESET_MASK 1 > +#define BD71837_SWRESET_RESET 1 > + > +/* Poweroff state transition conditions */ > + > +#define BD718XX_ON_REQ_POWEROFF_MASK 1 > +#define BD718XX_SWRESET_POWEROFF_MASK 2 > +#define BD718XX_WDOG_POWEROFF_MASK 4 > +#define BD718XX_KEY_L_POWEROFF_MASK 8 > + > +#define BD718XX_POWOFF_TO_SNVS 0 > +#define BD718XX_POWOFF_TO_RDY 0xF Please align each of the values with tabs. > +#define BD718XX_POWOFF_TIME_MASK 0xF0 > +enum { > + BD718XX_POWOFF_TIME_5MS = 0, > + BD718XX_POWOFF_TIME_10MS, > + BD718XX_POWOFF_TIME_15MS, > + BD718XX_POWOFF_TIME_20MS, > + BD718XX_POWOFF_TIME_25MS, > + BD718XX_POWOFF_TIME_30MS, > + BD718XX_POWOFF_TIME_35MS, > + BD718XX_POWOFF_TIME_40MS, > + BD718XX_POWOFF_TIME_45MS, > + BD718XX_POWOFF_TIME_50MS, > + BD718XX_POWOFF_TIME_75MS, > + BD718XX_POWOFF_TIME_100MS, > + BD718XX_POWOFF_TIME_250MS, > + BD718XX_POWOFF_TIME_500MS, > + BD718XX_POWOFF_TIME_750MS, > + BD718XX_POWOFF_TIME_1500MS > +}; > + > +/* Poweron sequence state transition conditions */ > + > +#define BD718XX_RDY_TO_SNVS_MASK 0xF > +#define BD718XX_SNVS_TO_RUN_MASK 0xF0 > + > +#define BD718XX_PWR_TRIG_KEY_L 1 > +#define BD718XX_PWR_TRIG_KEY_S 2 > +#define BD718XX_PWR_TRIG_PMIC_ON 4 > +#define BD718XX_PWR_TRIG_VSYS_UVLO 8 > +#define BD718XX_RDY_TO_SNVS_SIFT 0 > +#define BD718XX_SNVS_TO_RUN_SIFT 4 As above. > + > + No need for 2 '\n'. > +#define BD718XX_PWRBTN_PRESS_DURATION_MASK 0xF > + > +/* Timeout value for detecting short press */ > + > +enum { > + BD718XX_PWRBTN_SHORT_PRESS_10MS = 0, > + BD718XX_PWRBTN_SHORT_PRESS_500MS, > + BD718XX_PWRBTN_SHORT_PRESS_1000MS, > + BD718XX_PWRBTN_SHORT_PRESS_1500MS, > + BD718XX_PWRBTN_SHORT_PRESS_2000MS, > + BD718XX_PWRBTN_SHORT_PRESS_2500MS, > + BD718XX_PWRBTN_SHORT_PRESS_3000MS, > + BD718XX_PWRBTN_SHORT_PRESS_3500MS, > + BD718XX_PWRBTN_SHORT_PRESS_4000MS, > + BD718XX_PWRBTN_SHORT_PRESS_4500MS, > + BD718XX_PWRBTN_SHORT_PRESS_5000MS, > + BD718XX_PWRBTN_SHORT_PRESS_5500MS, > + BD718XX_PWRBTN_SHORT_PRESS_6000MS, > + BD718XX_PWRBTN_SHORT_PRESS_6500MS, > + BD718XX_PWRBTN_SHORT_PRESS_7000MS, > + BD718XX_PWRBTN_SHORT_PRESS_7500MS > +}; > + > +/* Timeout value for detecting LONG press */ > + > +enum { > + BD718XX_PWRBTN_LONG_PRESS_10MS = 0, > + BD718XX_PWRBTN_LONG_PRESS_1S, > + BD718XX_PWRBTN_LONG_PRESS_2S, > + BD718XX_PWRBTN_LONG_PRESS_3S, > + BD718XX_PWRBTN_LONG_PRESS_4S, > + BD718XX_PWRBTN_LONG_PRESS_5S, > + BD718XX_PWRBTN_LONG_PRESS_6S, > + BD718XX_PWRBTN_LONG_PRESS_7S, > + BD718XX_PWRBTN_LONG_PRESS_8S, > + BD718XX_PWRBTN_LONG_PRESS_9S, > + BD718XX_PWRBTN_LONG_PRESS_10S, > + BD718XX_PWRBTN_LONG_PRESS_11S, > + BD718XX_PWRBTN_LONG_PRESS_12S, > + BD718XX_PWRBTN_LONG_PRESS_13S, > + BD718XX_PWRBTN_LONG_PRESS_14S, > + BD718XX_PWRBTN_LONG_PRESS_15S > +}; > + > + > + Certainly no need for 3 '\n'. > +struct bd71837; Why is this necessary? > +struct bd71837_pmic; > +struct bd71837_clk; > +struct bd718xx_pwrkey; Where are these forward declared from? > +/* > + * Board platform data may be used to initialize regulators. > + */ > + > +struct bd71837_board { > + struct regulator_init_data *init_data[BD71837_REGULATOR_CNT]; > + int gpio_intr; > +}; Where is this populated? > +struct bd71837 { > + struct device *dev; > + struct i2c_client *i2c_client; > + struct regmap *regmap; > + unsigned long int id; > + > + int chip_irq; > + struct regmap_irq_chip_data *irq_data; > + > + struct bd71837_pmic *pmic; > + struct bd71837_clk *clk; > + struct bd718xx_pwrkey *pwrkey; > +}; > + > +/* > + * bd71837 sub-driver chip access routines > + */ > + > +static inline int bd71837_reg_read(struct bd71837 *bd71837, u8 reg) > +{ > + int r, val; > + > + r = regmap_read(bd71837->regmap, reg, &val); > + if (r < 0) > + return r; > + return val; > +} > + > +static inline int bd71837_reg_write(struct bd71837 *bd71837, u8 reg, > + unsigned int val) > +{ > + return regmap_write(bd71837->regmap, reg, val); > +} > + > +static inline int bd71837_set_bits(struct bd71837 *bd71837, u8 reg, u8 mask) > +{ > + return regmap_update_bits(bd71837->regmap, reg, mask, mask); > +} > + > +static inline int bd71837_clear_bits(struct bd71837 *bd71837, u8 reg, > + u8 mask) > +{ > + return regmap_update_bits(bd71837->regmap, reg, mask, 0); > +} > + > +static inline int bd71837_update_bits(struct bd71837 *bd71837, u8 reg, > + u8 mask, u8 val) > +{ > + return regmap_update_bits(bd71837->regmap, reg, mask, val); > +} Please don't abstract APIs for no reason. Use the regmap_* API directly instead. > +#endif /* __LINUX_MFD_BD71837_H__ */ -- Lee Jones [李琼斯] Linaro Services Technical Lead Linaro.org │ Open source software for ARM SoCs Follow Linaro: Facebook | Twitter | Blog -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
