Re: [PATCH 2/2] mfd: add new driver for P1 PMIC from SpacemiT

[Troy Mitchell <troymitchell988@gmail.com>]

On 2024/12/30 18:02, Troy Mitchell wrote:
> Add the core MFD driver for P1 PMIC. I define four sub-devices
> for which the drivers will be added in subsequent patches.
> 
> For this patch, It supports `reboot` and `shutdown`.
> 
> Signed-off-by: Troy Mitchell <TroyMitchell988@gmail.com>
> ---
>  drivers/mfd/Kconfig                        |  14 +
>  drivers/mfd/Makefile                       |   1 +
>  drivers/mfd/spacemit-pmic.c                | 159 ++++++++++
>  include/linux/mfd/spacemit/spacemit-p1.h   | 491 +++++++++++++++++++++++++++++
>  include/linux/mfd/spacemit/spacemit-pmic.h |  39 +++
>  5 files changed, 704 insertions(+)
> 
> diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
> index ae23b317a64e49f0cb529ae6bd1becbb90b7c282..c062bf6b11fd23d420a6d5f6ee51b3ec97f9fcbb 100644
> --- a/drivers/mfd/Kconfig
> +++ b/drivers/mfd/Kconfig
> @@ -1173,6 +1173,20 @@ config MFD_QCOM_RPM
>  	  Say M here if you want to include support for the Qualcomm RPM as a
>  	  module. This will build a module called "qcom_rpm".
>  
> +config MFD_SPACEMIT_PMIC
> +	tristate "SpacemiT PMIC"
> +	depends on ARCH_SPACEMIT || COMPILE_TEST
> +	depends on I2C && OF
> +	select MFD_CORE
> +	select REGMAP_I2C
> +	select REGMAP_IRQ
> +	help
> +	  If this option is turned on, the P1 chip produced by SpacemiT will
> +	  be supported.
> +
> +	  This driver can also be compiled as a module. If you choose to build
> +	  it as a module, the resulting kernel module will be named `spacemit-pmic`.
> +
>  config MFD_SPMI_PMIC
>  	tristate "Qualcomm SPMI PMICs"
>  	depends on ARCH_QCOM || COMPILE_TEST
> diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
> index e057d6d6faef5c1d639789e2560f336fa26cd872..284dbb8fe2ef83bdd994a598504fe315f2eabbdf 100644
> --- a/drivers/mfd/Makefile
> +++ b/drivers/mfd/Makefile
> @@ -266,6 +266,7 @@ obj-$(CONFIG_MFD_SUN4I_GPADC)	+= sun4i-gpadc.o
>  obj-$(CONFIG_MFD_STM32_LPTIMER)	+= stm32-lptimer.o
>  obj-$(CONFIG_MFD_STM32_TIMERS) 	+= stm32-timers.o
>  obj-$(CONFIG_MFD_MXS_LRADC)     += mxs-lradc.o
> +obj-$(CONFIG_MFD_SPACEMIT_PMIC)	+= spacemit-pmic.o
>  obj-$(CONFIG_MFD_SC27XX_PMIC)	+= sprd-sc27xx-spi.o
>  obj-$(CONFIG_RAVE_SP_CORE)	+= rave-sp.o
>  obj-$(CONFIG_MFD_ROHM_BD71828)	+= rohm-bd71828.o
> diff --git a/drivers/mfd/spacemit-pmic.c b/drivers/mfd/spacemit-pmic.c
> new file mode 100644
> index 0000000000000000000000000000000000000000..d9f6785cecbd405821dead13cdf8d1f9fd64e508
> --- /dev/null
> +++ b/drivers/mfd/spacemit-pmic.c
> @@ -0,0 +1,159 @@
> +static const struct of_device_id spacemit_pmic_of_match[] = {
> +	{ .compatible = "spacemit,p1", .data = &pmic_p1_match_data },
> +	{ /* sentinel */ }
> +};
> +MODULE_DEVICE_TABLE(of, spacemit_pmic_of_match);
> +
> +static struct i2c_driver spacemit_pmic_i2c_driver = {
> +	.driver = {
> +		.name = "spacemit-pmic",
> +		.of_match_table = spacemit_pmic_of_match,
> +	},
> +	.probe    = spacemit_pmic_probe,
> +};
> +
> +static int __init spacemit_pmic_init(void)
> +{
> +	return platform_driver_register(&spacemit_pmic_i2c_driver);
> +}
> +
> +static void __exit spacemit_pmic_exit(void)
> +{
> +	platform_driver_unregister(&spacemit_pmic_i2c_driver);
> +}
I should use i2c_add_driver/i2c_del_driver here.
I forgot to add my modified c file via stg :(
> +
> +module_init(spacemit_pmic_init);
> +module_exit(spacemit_pmic_exit);
> 

-- 
Troy Mitchell

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