satip-axe/kernel/arch/sh/boards/mach-st/mb520.c

/*
 * arch/sh/boards/st/common/mb520.c
 *
 * Copyright (C) 2007 STMicroelectronics Limited
 * Author: Pawel Moll <pawel.moll@st.com>
 *
 * May be copied or modified under the terms of the GNU General Public
 * License.  See linux/COPYING for more information.
 *
 * STMicroelectronics STB peripherals board support.
 */

#include <linux/init.h>
#include <linux/bug.h>
#include <linux/platform_device.h>
#include <linux/leds.h>
#include <linux/gpio.h>
#include <linux/i2c.h>
#include <linux/i2c/pcf857x.h>
#include <linux/spi/spi_gpio.h>
#include <linux/spi/flash.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <linux/stm/stx7200.h>
#include <asm/processor.h>
#include <sound/stm.h>



/* I2C PIO extender (IC23) */
#define EXTENDER_BASE 200
static struct i2c_board_info mb520_pio_extender = {
	I2C_BOARD_INFO("pcf857x", 0x27),
	.type = "pcf8575",
	.platform_data = &(struct pcf857x_platform_data) {
		.gpio_base = EXTENDER_BASE,
	},
};
#define EXTENDER_GPIO(port, pin) (EXTENDER_BASE + (port * 8) + (pin))



/* Heartbeat led (LD12-T) */
static struct platform_device mb520_hb_led = {
	.name = "leds-gpio",
	.id = -1,
	.dev.platform_data = &(struct gpio_led_platform_data) {
		.num_leds = 1,
		.leds = (struct gpio_led[]) {
			{
				.name = "HB",
				.default_trigger = "heartbeat",
				.gpio = stm_gpio(4, 7),
				.active_low = 1,
			},
		},
	},
};



#ifdef CONFIG_SND
/* Audio peripherals
 *
 * The recommended audio setup of MB520 is as follows:
 * 1. Remove R93 (located near SW4 and IC18)
 * 2. Set SW3[1..4] to [OFF, OFF, ON, ON]
 * 3. Set SW5[1..4] to [OFF, ON, ON, OFF]
 * 4. Update EPLD version to revision 7
 *
 * With such settings PCM Player #0 stereo output is available on
 * "INT DACS AUD-0" connectors, PCM Player #1 (first two channels)
 * on "INT DACS AUD-1", and first two channels of PCM Player #3
 * on "EXT DAC". PCM Reader is getting data from "SPDIF PCM IN"
 * connector. */

/* AK4388 DAC (IC18) */
static struct platform_device mb520_conv_external_dac = {
	.name = "snd_conv_gpio",
	.id = 0,
	.dev.platform_data = &(struct snd_stm_conv_gpio_info) {
		.group = "External DAC",

		.source_bus_id = "snd_pcm_player.3",
		.channel_from = 0,
		.channel_to = 1,
		.format = SND_STM_FORMAT__I2S |
				SND_STM_FORMAT__SUBFRAME_32_BITS,
		.oversampling = 256,

		.enable_supported = 1,
		.enable_gpio = EXTENDER_GPIO(0, 7),
		.enable_value = 1,

		.mute_supported = 1,
		.mute_gpio = EXTENDER_GPIO(1, 7),
		.mute_value = 1,
	},
};

/* CS8416 SPDIF to I2S converter (IC14) */
static struct platform_device mb520_conv_spdif_to_i2s = {
	.name = "snd_conv_gpio",
	.id = 1,
	.dev.platform_data = &(struct snd_stm_conv_gpio_info) {
		.group = "SPDIF Input",

		.source_bus_id = "snd_pcm_reader.0",
		.channel_from = 0,
		.channel_to = 1,
		.format = SND_STM_FORMAT__I2S |
				SND_STM_FORMAT__SUBFRAME_32_BITS,

		.enable_supported = 1,
		.enable_gpio = EXTENDER_GPIO(1, 6),
		.enable_value = 1,

		.mute_supported = 0,
	},
};
#endif

/* GPIO SPI bus for Serial Flash device */
static struct platform_device mb520_serial_flash_bus = {
	.name           = "spi_gpio",
	.id             = 5,
	.num_resources  = 0,
	.dev            = {
		.platform_data = &(struct spi_gpio_platform_data) {
			.sck = stm_gpio(5, 0),
			.mosi = stm_gpio(5, 1),
			.miso = stm_gpio(6, 1),
			.num_chipselect = 1,
		},
	},
};

/* Serial Flash */
static struct spi_board_info mb520_serial_flash = {
	.bus_num		= 5,
	.controller_data	= (void *)stm_gpio(5, 2),
	.modalias		= "m25p80",
	.max_speed_hz		= 1000000,
	.mode			= SPI_MODE_3,
	.platform_data		= &(struct flash_platform_data) {
		.name = "m25p80",
		.type = "m25p32",
		.nr_parts = 2,
		.parts = (struct mtd_partition []) {
			{
				.name = "Serial Flash 1",
				.size = 0x00080000,
				.offset = 0,
			}, {
				.name = "Serial Flash 2",
				.size = MTDPART_SIZ_FULL,
				.offset = MTDPART_OFS_NXTBLK,
			},
		},
	},
};


static struct platform_device *mb520_devices[] __initdata = {
	&mb520_hb_led,
#ifdef CONFIG_SND
	&mb520_conv_external_dac,
	&mb520_conv_spdif_to_i2s,
#endif
	&mb520_serial_flash_bus,
};

static int __init mb520_devices_init(void)
{
	int result;
	int periph_i2c_busnum;

	/* This file is (so far) valid only for 7200 processor board! */
	BUG_ON(cpu_data->type != CPU_STX7200);

	/* PWM0 output on TP114 */
	stx7200_configure_pwm(&(struct stx7200_pwm_config) {
			.out0_enabled = 1,
			.out1_enabled = 0, });


	/* Audio outputs - first two channels of the PCM Player #3
	 * are available as EXT DAC analog output */
	stx7200_configure_audio(&(struct stx7200_audio_config) {
			.pcm_player_3_routing =
					stx7200_pcm_player_3_aiddig0_auddig1,
			});

	/* SSC configuration */
	stx7200_configure_ssc_i2c(1); /* NIM0 */
	stx7200_configure_ssc_i2c(2); /* NIM1 */

	/* Peripherals - PIO extender and audio (inc. VoIP) devices */
	periph_i2c_busnum = stx7200_configure_ssc_i2c(4);

	/* I2C PIO extender connected do SSC4 */
	result = i2c_register_board_info(periph_i2c_busnum,
			&mb520_pio_extender, 1);

	/* Serial Flash device */
	spi_register_board_info(&mb520_serial_flash, 1);

	/* IR receiver/transmitter */
	stx7200_configure_lirc(&(struct stx7200_lirc_config) {
			.rx_mode = stx7200_lirc_rx_mode_ir,
			.tx_enabled = 1,
			.tx_od_enabled = 1, });

	/* And now platform devices... */

	result |= platform_add_devices(mb520_devices,
			ARRAY_SIZE(mb520_devices));

	return result;
}
arch_initcall(mb520_devices_init);