Subject: [PATCH 1/2] ARM: S5PV210: Add audio support to Aquila

From: [email-masked] (Chanwoo Choi)
Date: Thu, 30 Sep 2010 13:55:14 +0900

Kukjin Kim wrote:
> Chanwoo Choi wrote:
>> Kukjin Kim wrote:
>>> Chanwoo Choi wrote:
>>>> Mark Brown wrote:
>>>>> On Wed, Jul 28, 2010 at 12:04:44PM +0900, Chanwoo Choi wrote:
>>>>>
>>>>>> +static struct regulator_consumer_supply wm8994_fixed_voltage0_supplies[]
>> =
>>>> {
>>>>>> +	{
>>>>>> +		.dev_name	= "5-001a",
>>>>>> +		.supply		= "DBVDD",
>>>>>> +	}, {
>>>>>> +		.dev_name	= "5-001a",
>>>>>> +		.supply		= "AVDD2",
>>>>>> +	}, {
>>>>>> +		.dev_name	= "5-001a",
>>>>>> +		.supply		= "CPVDD",
>>>>>> +	},
>>>>>> +
>>>>>> +};
>>>>>> +
>>>>>> +static struct regulator_consumer_supply wm8994_fixed_voltage1_supplies[]
>> =
>>>> {
>>>>> All these fixed voltage regulators seem a bit suspicous for a mobile
>>>>> phone - I'd have expected that the supplies would all be being provided
>>>>> by your PMIC except for things taken directly from the battery supply
>>>>> (like the speakers tend to be, for example)?  There's no problem with
>>>>> the code itself, it just looks a bit odd.
>>>>>
>>>> All these consumer supply of WM8994 codec connected the below
>>>> regulator(VCC_1.8V) on
>>>> a circuit diagram. "VCC_1.8V" regualtor is always enabled, because it is used
>> to
>>>> many devices.
>>>> Then I haven't connected all these consumer supply of WM8994 codec to
>>>> "VCC_1.8V" regulator.
>>>> I will modify that the consumer supply would be provided by PMIC.
>>>>
>>>> static struct regulator_init_data aquila_buck3_data = {
>>>> 	.constraints	= {
>>>> 		.name		= "VCC_1.8V",
>>>> 		.min_uV		= 1800000,
>>>> 		.max_uV		= 1800000,
>>>> 		.apply_uV	= 1,
>>>> 		.state_mem	= {
>>>> 			.enabled = 1,
>>>> 		},
>>>> 	},
>>>> };
>>>>
>>>>>> +static struct i2c_board_info i2c_gpio5_devs[] __initdata = {
>>>>>> +	{
>>>>>> +		/* CS/ADDR = low 0x34 (FYI: high = 0x36) */
>>>>>> +		I2C_BOARD_INFO("wm8994", 0x34 >> 1),
>>>>>> +		.platform_data	= &wm8994_platform_data,
>>>>>> +	},
>>>>>> +};
>>>>> Probably clearer for generic Linux use to specify the address as 0x1a
>>>>> directly.
>>>> Ok, I will do.
>>>>
>>>>>> +static void __init aquila_sound_init(void)
>>>>>> +{
>>>>>> +	unsigned int gpio;
>>>>>> +
>>>>>> +	/* CODEC_XTAL_EN */
>>>>>> +	gpio = S5PV210_GPH3(2);		/* XEINT_26 */
>>>>>> +	gpio_request(gpio, "CODEC_XTAL_EN");
>>>>>> +	s3c_gpio_cfgpin(gpio, S3C_GPIO_OUTPUT);
>>>>>> +	s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE);
>>>>>> +	gpio_direction_output(gpio, 1);
>>>>> Might be as well to provide some or all this stuff in your audio machine
>>>>> driver?
>>>> The Aquila board have a oscillator which provide main clock to
>>>> WM8994 audio codec. The oscillator provide 24MHz clock to WM8994 audio
>> codec
>>>> (MCLK1 pin). I set gpio setting of "CODEC_XTAL_EN" to enable a oscillator.
>>>>
>>>>>> +	/* MICBIAS_EN */
>>>>>> +	gpio = S5PV210_GPJ4(2);			/* XMSMRN */
>>>>>> +	gpio_request(gpio, "MICBIAS_EN");
>>>>>> +	s3c_gpio_cfgpin(gpio, S3C_GPIO_OUTPUT);
>>>>>> +	gpio_direction_output(gpio, 1);
>>>>> This in particular would benefit from keeping the request of the GPIO
>>>>> joined up with the driver that uses it.
>>>> Ok, I will move this code to machine
>> driver(sound/soc/s3c24xxx/aquila_wm8994.c).
>>>>>> +	/* ADC_EN */
>>>>>> +	gpio = S5PV210_GPJ3(2);
>>>>>> +	gpio_request(gpio, "ADC_EN");
>>>>>> +	s3c_gpio_cfgpin(gpio, S3C_GPIO_OUTPUT);
>>>>>> +	gpio_direction_output(gpio, 1);
>>>>> I'm not sure what this does?
>>>>>
>>>> I explained below description about "ADC_EN" :
>>>> "ADC_EN : This gpio enable the ADC device which is used to detect
>>>>  the kind of jack. (SND_JACK_HEADPHONE/HEADSET/MECHANICAL/AVOUT)
>>>>  According to the kind of jack, an electric current is changed.
>>>>  (Only used on Aquila board) "
>>>>
>>>> When inserting the jack to Aquila board, I used ADC driver so that, detecting
>>>> the kind of jack(SND_JACK_HEADPHONE/HEADSET/MECHANICAL/AVOUT).
>>>>
>>>> I will separately make the another function to initialize ADC driver.
>>>>
>>>> Thank you for your comment.
>>>> Chanwoo Choi
>>>>
>>> Hi,
>>>
>>> How was going on?
>>>
>> I did post this patch and reviewed by maintainer.
>> The request was reflected to following patch.
>> Also, I did explain the constraints of the regulator of WM8994 codec
>> and resend following patch. This patch include Goni and Aquila board code
>> related to audio.
>> 	[PATCH] ARM: S5PV210: Add audio support to Goni and Aquila board
>>
>> This is my mistake, "RESEND" word is leaved out in the subject.
>>
> Hmm...so may missed. :-(
> 
> It would helpful to me if you could add patch version and changelog.
> 

You refer to following url :
http://lists.infradead.org/pipermail/linux-arm-kernel/2010-September/025677.html

Do you need additional info(changelog, patch version)?

Thanks

Best regards,
Chanwoo Choi.