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SubjectRe: [PATCH v6] mfd: mt6360: add pmic mt6360 driver
On Wed, 25 Dec 2019, Gene Chen wrote:

> From: Gene Chen <gene_chen@richtek.com>
>
> Add mfd driver for mt6360 pmic chip include
> Battery Charger/USB_PD/Flash LED/RGB LED/LDO/Buck
>
> Signed-off-by: Gene Chen <gene_chen@richtek.com
> ---
> drivers/mfd/Kconfig | 12 +
> drivers/mfd/Makefile | 1 +
> drivers/mfd/mt6360-core.c | 426 +++++++++++++++++++++++++++++
> include/linux/mfd/mt6360-private.h | 217 +++++++++++++++
> include/linux/mfd/mt6360.h | 32 +++
> 5 files changed, 688 insertions(+)
> create mode 100644 drivers/mfd/mt6360-core.c
> create mode 100644 include/linux/mfd/mt6360-private.h
> create mode 100644 include/linux/mfd/mt6360.h
>
> changelogs between v1 & v2
> - include missing header file
>
> changelogs between v2 & v3
> - add changelogs
>
> changelogs between v3 & v4
> - fix Kconfig description
> - replace mt6360_pmu_info with mt6360_pmu_data
> - replace probe with probe_new
> - remove unnecessary irq_chip variable
> - remove annotation
> - replace MT6360_MFD_CELL with OF_MFD_CELL
>
> changelogs between v4 & v5
> - remove unnecessary parse dt function
> - use devm_i2c_new_dummy_device
> - add base-commit message
>
> changelogs between v5 & v6
> - review return value
> - remove i2c id_table
> - use GPL license v2
>
> diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
> index 420900852166..e6df91d55405 100644
> --- a/drivers/mfd/Kconfig
> +++ b/drivers/mfd/Kconfig
> @@ -856,6 +856,18 @@ config MFD_MAX8998
> additional drivers must be enabled in order to use the functionality
> of the device.
>
> +config MFD_MT6360
> + tristate "Mediatek MT6360 SubPMIC"
> + select MFD_CORE
> + select REGMAP_I2C
> + select REGMAP_IRQ
> + depends on I2C
> + help
> + Say Y here to enable MT6360 PMU/PMIC/LDO functional support.
> + PMU part includes Charger, Flashlight, RGB LED
> + PMIC part includes 2-channel BUCKs and 2-channel LDOs
> + LDO part includes 4-channel LDOs
> +
> config MFD_MT6397
> tristate "MediaTek MT6397 PMIC Support"
> select MFD_CORE
> diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
> index aed99f08739f..f5f80d75ee53 100644
> --- a/drivers/mfd/Makefile
> +++ b/drivers/mfd/Makefile
> @@ -237,6 +237,7 @@ obj-$(CONFIG_INTEL_SOC_PMIC) += intel-soc-pmic.o
> obj-$(CONFIG_INTEL_SOC_PMIC_BXTWC) += intel_soc_pmic_bxtwc.o
> obj-$(CONFIG_INTEL_SOC_PMIC_CHTWC) += intel_soc_pmic_chtwc.o
> obj-$(CONFIG_INTEL_SOC_PMIC_CHTDC_TI) += intel_soc_pmic_chtdc_ti.o
> +obj-$(CONFIG_MFD_MT6360) += mt6360-core.o
> mt6397-objs := mt6397-core.o mt6397-irq.o
> obj-$(CONFIG_MFD_MT6397) += mt6397.o
> obj-$(CONFIG_INTEL_SOC_PMIC_MRFLD) += intel_soc_pmic_mrfld.o
> diff --git a/drivers/mfd/mt6360-core.c b/drivers/mfd/mt6360-core.c
> new file mode 100644
> index 000000000000..f6d43b6dad4e
> --- /dev/null
> +++ b/drivers/mfd/mt6360-core.c
> @@ -0,0 +1,426 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Copyright (c) 2019 MediaTek Inc.

No author?

> + */
> +
> +#include <linux/i2c.h>
> +#include <linux/init.h>
> +#include <linux/kernel.h>
> +#include <linux/mfd/core.h>
> +#include <linux/module.h>
> +#include <linux/of_irq.h>
> +#include <linux/of_platform.h>
> +#include <linux/version.h>
> +
> +#include <linux/mfd/mt6360.h>
> +#include <linux/mfd/mt6360-private.h>

[...]

> +#define MT6360_REGMAP_IRQ_REG(_irq_evt) \
> + REGMAP_IRQ_REG(_irq_evt, (_irq_evt) / 8, BIT((_irq_evt) % 8))

No need to roll your own macros for this. I think
REGMAP_IRQ_REG_LINE() is what you're looking for.

> +static const struct regmap_irq mt6360_pmu_irqs[] = {

REGMAP_IRQ_REG_LINE(MT6360_CHG_TREG_EVT, 8),

... etc.

> + MT6360_REGMAP_IRQ_REG(MT6360_CHG_TREG_EVT),
> + MT6360_REGMAP_IRQ_REG(MT6360_CHG_AICR_EVT),

[...]

> + MT6360_REGMAP_IRQ_REG(MT6360_LDO7_PGB_EVT),
> +};

[...]

> diff --git a/include/linux/mfd/mt6360-private.h b/include/linux/mfd/mt6360-private.h
> new file mode 100644
> index 000000000000..d542652f4de0
> --- /dev/null
> +++ b/include/linux/mfd/mt6360-private.h

As there are only appropriately namespaced macros in here, I would
move them to the normal header file and dispose of this one.

> @@ -0,0 +1,217 @@
> +/* SPDX-License-Identifier: GPL-2.0 */
> +/*
> + * Copyright (c) 2019 MediaTek Inc.
> + */
> +
> +#ifndef __MT6360_PRIVATE_H__
> +#define __MT6360_PRIVATE_H__
> +
> +/* PMU register defininition */
> +#define MT6360_PMU_DEV_INFO (0x00)
> +#define MT6360_PMU_CORE_CTRL1 (0x01)

[...]

> +#define MT6360_PMU_LDO_MASK2 (0xFF)
> +#define MT6360_PMU_MAXREG (MT6360_PMU_LDO_MASK2)
> +
> +/* MT6360_PMU_IRQ_SET */
> +#define MT6360_PMU_IRQ_REGNUM (MT6360_PMU_LDO_IRQ2 - MT6360_PMU_CHG_IRQ1 + 1)
> +#define MT6360_IRQ_RETRIG BIT(2)
> +
> +#define CHIP_VEN_MASK (0xF0)
> +#define CHIP_VEN_MT6360 (0x50)
> +#define CHIP_REV_MASK (0x0F)
> +
> +#endif /* __MT6360_PRIVATE_H__ */

--
Lee Jones [李琼斯]
Linaro Services Technical Lead
Linaro.org │ Open source software for ARM SoCs
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