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Commit 31bb68a3 authored by Alexander Sverdlin's avatar Alexander Sverdlin Committed by Russell King
Browse files

ARM: 6780/1: EDB93xx: Add support for CS4271 SPI-connected CODEC 



Add support for CS4271 SPI-connected CODEC to EDB93xx.

Signed-off-by: default avatarAlexander Sverdlin <subaparts@yandex.ru>
Acked-by: default avatarH Hartley Sweeten <hsweeten@visionengravers.com>
Acked-by: default avatarliam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
parent 13055192

arch/arm/mach-ep93xx/edb93xx.c

+83 −0
Original line number Diff line number Diff line
@@ -30,9 +30,13 @@ 
#include <linux/gpio.h>

#include <linux/i2c.h>

#include <linux/i2c-gpio.h>

#include <linux/spi/spi.h>



#include <sound/cs4271.h>



#include <mach/hardware.h>

#include <mach/fb.h>

#include <mach/ep93xx_spi.h>



#include <asm/mach-types.h>

#include <asm/mach/arch.h>
@@ -93,6 +97,83 @@ static void __init edb93xx_register_i2c(void) 
}





/*************************************************************************

 * EDB93xx SPI peripheral handling

 *************************************************************************/

static struct cs4271_platform_data edb93xx_cs4271_data = {

	.gpio_nreset	= -EINVAL,	/* filled in later */

};



static int edb93xx_cs4271_hw_setup(struct spi_device *spi)

{

	return gpio_request_one(EP93XX_GPIO_LINE_EGPIO6,

				GPIOF_OUT_INIT_HIGH, spi->modalias);

}



static void edb93xx_cs4271_hw_cleanup(struct spi_device *spi)

{

	gpio_free(EP93XX_GPIO_LINE_EGPIO6);

}



static void edb93xx_cs4271_hw_cs_control(struct spi_device *spi, int value)

{

	gpio_set_value(EP93XX_GPIO_LINE_EGPIO6, value);

}



static struct ep93xx_spi_chip_ops edb93xx_cs4271_hw = {

	.setup		= edb93xx_cs4271_hw_setup,

	.cleanup	= edb93xx_cs4271_hw_cleanup,

	.cs_control	= edb93xx_cs4271_hw_cs_control,

};



static struct spi_board_info edb93xx_spi_board_info[] __initdata = {

	{

		.modalias		= "cs4271",

		.platform_data		= &edb93xx_cs4271_data,

		.controller_data	= &edb93xx_cs4271_hw,

		.max_speed_hz		= 6000000,

		.bus_num		= 0,

		.chip_select		= 0,

		.mode			= SPI_MODE_3,

	},

};



static struct ep93xx_spi_info edb93xx_spi_info __initdata = {

	.num_chipselect	= ARRAY_SIZE(edb93xx_spi_board_info),

};



static void __init edb93xx_register_spi(void)

{

	if (machine_is_edb9301() || machine_is_edb9302())

		edb93xx_cs4271_data.gpio_nreset = EP93XX_GPIO_LINE_EGPIO1;

	else if (machine_is_edb9302a() || machine_is_edb9307a())

		edb93xx_cs4271_data.gpio_nreset = EP93XX_GPIO_LINE_H(2);

	else if (machine_is_edb9315a())

		edb93xx_cs4271_data.gpio_nreset = EP93XX_GPIO_LINE_EGPIO14;



	ep93xx_register_spi(&edb93xx_spi_info, edb93xx_spi_board_info,

			    ARRAY_SIZE(edb93xx_spi_board_info));

}





/*************************************************************************

 * EDB93xx I2S

 *************************************************************************/

static int __init edb93xx_has_audio(void)

{

	return (machine_is_edb9301() || machine_is_edb9302() ||

		machine_is_edb9302a() || machine_is_edb9307a() ||

		machine_is_edb9315a());

}



static void __init edb93xx_register_i2s(void)

{

	if (edb93xx_has_audio()) {

		ep93xx_register_i2s();

	}

}





/*************************************************************************

 * EDB93xx pwm

 *************************************************************************/
@@ -149,6 +230,8 @@ static void __init edb93xx_init_machine(void) 
	edb93xx_register_flash();

	ep93xx_register_eth(&edb93xx_eth_data, 1);

	edb93xx_register_i2c();

	edb93xx_register_spi();

	edb93xx_register_i2s();

	edb93xx_register_pwm();

	edb93xx_register_fb();

}