linux-kernel - Re: [PATCH v3 3/5] mfd: tps65912: Add driver for the TPS65912 PMIC

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Date:	Tue, 29 Sep 2015 13:16:36 -0500
From:	"Andrew F. Davis" <afd@...com>
To:	Grygorii Strashko <grygorii.strashko@...com>,
	Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	Lee Jones <lee.jones@...aro.org>,
	Mark Brown <broonie@...nel.org>,
	Linus Walleij <linus.walleij@...aro.org>,
	Alexandre Courbot <gnurou@...il.com>,
	Samuel Ortiz <sameo@...ux.intel.com>,
	Liam Girdwood <lgirdwood@...il.com>
CC:	<linux-gpio@...r.kernel.org>, <devicetree@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v3 3/5] mfd: tps65912: Add driver for the TPS65912 PMIC

On 09/28/2015 11:01 AM, Grygorii Strashko wrote:
> On 09/24/2015 09:52 AM, Andrew F. Davis wrote:
>> This patch adds support for TPS65912 mfd device. It provides
>> communication through the I2C and SPI interfaces. It contains
>> the following components:
>>
>>    - Regulators
>>    - GPIO controller
>>
>> Signed-off-by: Andrew F. Davis <afd@...com>
>> ---
>>    drivers/mfd/Kconfig          |  24 +++
>>    drivers/mfd/Makefile         |   3 +
>>    drivers/mfd/tps65912-core.c  | 114 +++++++++++++
>>    drivers/mfd/tps65912-i2c.c   |  86 ++++++++++
>>    drivers/mfd/tps65912-spi.c   |  85 ++++++++++
>>    include/linux/mfd/tps65912.h | 393 +++++++++++++++++++++++++++++++++++++++++++
>>    6 files changed, 705 insertions(+)
>>    create mode 100644 drivers/mfd/tps65912-core.c
>>    create mode 100644 drivers/mfd/tps65912-i2c.c
>>    create mode 100644 drivers/mfd/tps65912-spi.c
>>    create mode 100644 include/linux/mfd/tps65912.h
>>
>
> [...]
>
>> +
>> +/*
>> + * struct tps_info - packages regulator constraints
>> + * @id: Id of the regulator
>> + * @name: Voltage regulator name
>> + * @min_uV: Minimum micro volts
>> + * @max_uV: Minimum micro volts
>> + *
>> + * This data is used to check the regulator voltage limits while setting.
>> + */
>> +struct tps_info {
>> +	int id;
>> +	const char *name;
>> +	int min_uV;
>> +	int max_uV;
>> +};
>
> Could you move structure's definitions to the corresponding c-files
> if they are used only locally in this files, pls?
>

ACK

>> +
>> +/*
>> + * struct tps65912 - state holder for the tps65912 driver
>> + *
>> + * Device data may be used to access the TPS65912 chip
>> + */
>> +struct tps65912 {
>> +	struct device *dev;
>> +	unsigned int id;
>> +
>> +	/* IRQ Data */
>> +	int irq;
>> +	struct regmap_irq_chip_data *irq_data;
>> +
>> +	struct regulator_desc desc[TPS65912_NUM_REGULATOR];
>> +	struct tps_info *info[TPS65912_NUM_REGULATOR];
>
> seems above two field are not used (and id?).
>

The idea was for a someday use, but because I never did that I'll
remove them for now.

Thanks,
Andrew

>> +	struct regmap *regmap;
>> +};
>> +
>> +static const struct regmap_range tps65912_yes_ranges[] = {
>> +	regmap_reg_range(TPS65912_INT_STS, TPS65912_GPIO5),
>> +};
>> +
>> +static const struct regmap_access_table tps65912_volatile_table = {
>> +	.yes_ranges = tps65912_yes_ranges,
>> +	.n_yes_ranges = ARRAY_SIZE(tps65912_yes_ranges),
>> +};
>> +
>> +static const struct regmap_config tps65912_regmap_co	nfig = {
>> +	.reg_bits = 8,
>> +	.val_bits = 8,
>> +	.cache_type = REGCACHE_RBTREE,
>> +	.volatile_table = &tps65912_volatile_table,
>> +};
>> +
>> +int tps65912_device_init(struct tps65912 *tps);
>> +int tps65912_device_exit(struct tps65912 *tps);
>> +
>> +#endif /*  __LINUX_MFD_TPS65912_H */
>>
>
>
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