Subject: [alsa-devel] [PATCH 2/4] ASoC: s3c64xx/smartq: use dynamic registration

From: [email-masked] (Lars-Peter Clausen)
Date: Mon, 14 Jul 2014 14:40:42 +0200

[...]
> I've given it a try now. Can you confirm that this is a valid transformation?
>
> If it's ok, I'll fold it into the original patch and re-send.
>
> Signed-off-by: Arnd Bergmann <[email-masked]>
>
>   ./arch/arm/mach-s3c64xx/mach-smartq.c           |   15 ++++++++-------
>   ./sound/soc/samsung/smartq_wm8987.c             |   19 +++++++------------
>   ./include/linux/platform_data/asoc-s3c-smartq.h |   10 ----------
>   3 files changed, 15 insertions(+), 29 deletions(-)
>
> diff --git a/arch/arm/mach-s3c64xx/mach-smartq.c b/arch/arm/mach-s3c64xx/mach-smartq.c
> index 4c111f60dbf2..dce449c0e855 100644
> --- a/arch/arm/mach-s3c64xx/mach-smartq.c
> +++ b/arch/arm/mach-s3c64xx/mach-smartq.c
> @@ -20,7 +20,6 @@
>   #include <linux/spi/spi_gpio.h>
>   #include <linux/usb/gpio_vbus.h>
>   #include <linux/platform_data/s3c-hsotg.h>
> -#include <linux/platform_data/asoc-s3c-smartq.h>

#include <linux/gpio/driver.h>

>
>   #include <asm/mach-types.h>
>   #include <asm/mach/map.h>
> @@ -380,9 +379,12 @@ void __init smartq_map_io(void)
>   	smartq_lcd_mode_set();
>   }
>
> -static const __initconst struct smartq_audio_pdata smartq_audio_pdata = {
> -	.gpio_jack = S3C64XX_GPL(12),
> -	.gpio_amp = S3C64XX_GPK(12),
> +static struct gpiod_lookup_table smartq_audio_gpios = {
> +	.dev_id = "smartq-audio",
> +	.table = {
> +		GPIO_LOOKUP("GPL", 12, "headphone detect", 0),
> +		GPIO_LOOKUP("GPK", 12, "amplifiers shutdown", GPIO_ACTIVE_HIGH),

There is no such thing as GPIO_ACTIVE_HIGH, just 0 for flags.

This needs a { } terminating entry.

> +	},
>   };
>
>   void __init smartq_machine_init(void)
> @@ -404,7 +406,6 @@ void __init smartq_machine_init(void)
>
>   	platform_add_devices(smartq_devices, ARRAY_SIZE(smartq_devices));
>
> -	platform_device_register_data(NULL, "smartq-audio", -1,
> -				      &smartq_audio_pdata,
> -				      sizeof (smartq_audio_pdata));
> +	platform_device_register_simple("smartq-audio", -1, NULL, 0);
> +	gpiod_add_lookup_table(&smartq_audio_gpios);

To avoid a extra round of -EPROBE_DEFER the lookup table should be 
registered before the device.

>   }
[...]
> diff --git a/sound/soc/samsung/smartq_wm8987.c b/sound/soc/samsung/smartq_wm8987.c
> index 8c4a0a285ce7..8da7c67903c6 100644
> --- a/sound/soc/samsung/smartq_wm8987.c
> +++ b/sound/soc/samsung/smartq_wm8987.c
> @@ -19,8 +19,6 @@
>   #include <sound/soc.h>
>   #include <sound/jack.h>

#include <linux/gpio/consumer.h>

[..]
> -
> -	smartq_jack_gpios[0].gpio = pdata->gpio_jack;

smartq_jack_gpios[0].gpiod_dev = &pdev->dev;

> +	platform_set_drvdata(pdev, gpio);

This unfortunately wont work. snd_soc_register_card() will overwrite the 
devices drvdata. Use snd_soc_card_set_drvdata(card, gpio) and in the speaker 
event handler snd_soc_card_get_drvdata(w->dapm->card);