linux-kernel - Re: [PATCH 4/6 RESEND] mfd: arizona: Simplify adding subdevices

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Message-ID: <20151001114148.GO3214@x1>
Date:	Thu, 1 Oct 2015 12:41:48 +0100
From:	Lee Jones <lee.jones@...aro.org>
To:	Richard Fitzgerald <rf@...nsource.wolfsonmicro.com>
Cc:	sameo@...ux.intel.com, patches@...nsource.wolfsonmicro.com,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 4/6 RESEND] mfd: arizona: Simplify adding subdevices

On Mon, 28 Sep 2015, Richard Fitzgerald wrote:

> The code was using a switch on the code type to execute
> one of several mfd_add_devices() calls. We're already
> switching on the code type earlier in the function to
> select the correct patch function so we can roll selection
> of the mfd device table into the same switch.
> 
> Signed-off-by: Richard Fitzgerald <rf@...nsource.wolfsonmicro.com>
> ---
>  drivers/mfd/arizona-core.c | 36 ++++++++++++++----------------------
>  1 file changed, 14 insertions(+), 22 deletions(-)

For my own reference:
  Acked-by: Lee Jones <lee.jones@...aro.org>

> diff --git a/drivers/mfd/arizona-core.c b/drivers/mfd/arizona-core.c
> index cb09172..2512192 100644
> --- a/drivers/mfd/arizona-core.c
> +++ b/drivers/mfd/arizona-core.c
> @@ -24,6 +24,7 @@
>  #include <linux/regulator/consumer.h>
>  #include <linux/regulator/machine.h>
>  #include <linux/slab.h>
> +#include <linux/platform_device.h>
>  
>  #include <linux/mfd/arizona/core.h>
>  #include <linux/mfd/arizona/registers.h>
> @@ -967,7 +968,8 @@ int arizona_dev_init(struct arizona *arizona)
>  	const char *type_name;
>  	unsigned int reg, val, mask;
>  	int (*apply_patch)(struct arizona *) = NULL;
> -	int ret, i;
> +	const struct mfd_cell *subdevs = NULL;
> +	int n_subdevs, ret, i;
>  
>  	dev_set_drvdata(arizona->dev, arizona);
>  	mutex_init(&arizona->clk_lock);
> @@ -1138,6 +1140,8 @@ int arizona_dev_init(struct arizona *arizona)
>  		}
>  		apply_patch = wm5102_patch;
>  		arizona->rev &= 0x7;
> +		subdevs = wm5102_devs;
> +		n_subdevs = ARRAY_SIZE(wm5102_devs);
>  		break;
>  #endif
>  #ifdef CONFIG_MFD_WM5110
> @@ -1157,6 +1161,8 @@ int arizona_dev_init(struct arizona *arizona)
>  			break;
>  		}
>  		apply_patch = wm5110_patch;
> +		subdevs = wm5110_devs;
> +		n_subdevs = ARRAY_SIZE(wm5110_devs);
>  		break;
>  #endif
>  #ifdef CONFIG_MFD_WM8997
> @@ -1168,6 +1174,8 @@ int arizona_dev_init(struct arizona *arizona)
>  			arizona->type = WM8997;
>  		}
>  		apply_patch = wm8997_patch;
> +		subdevs = wm8997_devs;
> +		n_subdevs = ARRAY_SIZE(wm8997_devs);
>  		break;
>  #endif
>  #ifdef CONFIG_MFD_WM8998
> @@ -1189,6 +1197,8 @@ int arizona_dev_init(struct arizona *arizona)
>  		}
>  
>  		apply_patch = wm8998_patch;
> +		subdevs = wm8998_devs;
> +		n_subdevs = ARRAY_SIZE(wm8998_devs);
>  		break;
>  #endif
>  	default:
> @@ -1379,28 +1389,10 @@ int arizona_dev_init(struct arizona *arizona)
>  	arizona_request_irq(arizona, ARIZONA_IRQ_UNDERCLOCKED, "Underclocked",
>  			    arizona_underclocked, arizona);
>  
> -	switch (arizona->type) {
> -	case WM5102:
> -		ret = mfd_add_devices(arizona->dev, -1, wm5102_devs,
> -				      ARRAY_SIZE(wm5102_devs), NULL, 0, NULL);
> -		break;
> -	case WM5110:
> -	case WM8280:
> -		ret = mfd_add_devices(arizona->dev, -1, wm5110_devs,
> -				      ARRAY_SIZE(wm5110_devs), NULL, 0, NULL);
> -		break;
> -	case WM8997:
> -		ret = mfd_add_devices(arizona->dev, -1, wm8997_devs,
> -				      ARRAY_SIZE(wm8997_devs), NULL, 0, NULL);
> -		break;
> -	case WM8998:
> -	case WM1814:
> -		ret = mfd_add_devices(arizona->dev, -1, wm8998_devs,
> -				      ARRAY_SIZE(wm8998_devs), NULL, 0, NULL);
> -		break;
> -	}
> +	ret = mfd_add_devices(arizona->dev, PLATFORM_DEVID_NONE,
> +			      subdevs, n_subdevs, NULL, 0, NULL);
>  
> -	if (ret != 0) {
> +	if (ret) {
>  		dev_err(arizona->dev, "Failed to add subdevices: %d\n", ret);
>  		goto err_irq;
>  	}

-- 
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
Follow Linaro: Facebook | Twitter | Blog
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