linux-kernel - Re: [PATCH 1/2] mfd: twl-core: Add a clock subdevice for the TWL6030

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Message-ID: <20241009132249.GH276481@google.com>
Date: Wed, 9 Oct 2024 14:22:49 +0100
From: Lee Jones <lee@...nel.org>
To: Andreas Kemnade <andreas@...nade.info>
Cc: Roger Quadros <rogerq@...nel.org>, linux-omap@...r.kernel.org,
	Stephen Boyd <sboyd@...nel.org>,
	Kevin Hilman <khilman@...libre.com>,
	Michael Turquette <mturquette@...libre.com>,
	Aaro Koskinen <aaro.koskinen@....fi>, linux-kernel@...r.kernel.org,
	Tony Lindgren <tony@...mide.com>, linux-clk@...r.kernel.org
Subject: Re: [PATCH 1/2] mfd: twl-core: Add a clock subdevice for the TWL6030

On Tue, 24 Sep 2024, Andreas Kemnade wrote:

> Also the TWL6030 has some clocks, so add a subdevice for that.
> 
> Signed-off-by: Andreas Kemnade <andreas@...nade.info>
> ---
>  drivers/mfd/twl-core.c | 32 ++++++++++++++++++++++----------
>  1 file changed, 22 insertions(+), 10 deletions(-)
> 
> diff --git a/drivers/mfd/twl-core.c b/drivers/mfd/twl-core.c
> index c130ffef182f..c981922f62d5 100644
> --- a/drivers/mfd/twl-core.c
> +++ b/drivers/mfd/twl-core.c
> @@ -711,6 +711,10 @@ static struct of_dev_auxdata twl_auxdata_lookup[] = {
>  	{ /* sentinel */ },
>  };
>  
> +static const struct mfd_cell twl6030_cells[] = {
> +	{ .name = "twl6030-clk" },
> +};
> +
>  static const struct mfd_cell twl6032_cells[] = {
>  	{ .name = "twl6032-clk" },
>  };
> @@ -861,17 +865,25 @@ twl_probe(struct i2c_client *client)
>  				 TWL4030_DCDC_GLOBAL_CFG);
>  	}
>  
> -	if (id->driver_data == (TWL6030_CLASS | TWL6032_SUBCLASS)) {
> -		status = devm_mfd_add_devices(&client->dev,
> -					      PLATFORM_DEVID_NONE,
> -					      twl6032_cells,
> -					      ARRAY_SIZE(twl6032_cells),
> -					      NULL, 0, NULL);
> -		if (status < 0)
> -			goto free;
> -	}
> -
>  	if (twl_class_is_6030()) {
> +		if (id->driver_data & TWL6032_SUBCLASS) {
> +			status = devm_mfd_add_devices(&client->dev,
> +						      PLATFORM_DEVID_NONE,
> +						      twl6032_cells,
> +						      ARRAY_SIZE(twl6032_cells),
> +						      NULL, 0, NULL);
> +			if (status < 0)
> +				goto free;
> +		} else {
> +			status = devm_mfd_add_devices(&client->dev,
> +						      PLATFORM_DEVID_NONE,
> +						      twl6030_cells,
> +						      ARRAY_SIZE(twl6030_cells),
> +						      NULL, 0, NULL);
> +			if (status < 0)
> +				goto free;
> +		}
> +

Before this gets too crazy, how about:

> +		if (id->driver_data & TWL6032_SUBCLASS) {
> +			cells = twl6032_cells;
> +			num_cells = ARRAY_SIZE(twl6032_cells);
> +		} else {
> +			cells = twl6030_cells;
> +			num_cells = ARRAY_SIZE(twl6030_cells);
> +		}
> +
> +		status = devm_mfd_add_devices(&client->dev, PLATFORM_DEVID_NONE,
> +					      cells, num_cells, NULL, 0, NULL);
> +		if (status < 0)
> +			goto free;


>  		if (of_device_is_system_power_controller(node)) {
>  			if (!pm_power_off)
>  				pm_power_off = twl6030_power_off;
> -- 
> 2.39.5
> 

-- 
Lee Jones [李琼斯]