222 lines
5.3 KiB
C
222 lines
5.3 KiB
C
/*
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* arch/sh/boards/st/common/mb520.c
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*
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* Copyright (C) 2007 STMicroelectronics Limited
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* Author: Pawel Moll <pawel.moll@st.com>
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*
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* May be copied or modified under the terms of the GNU General Public
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* License. See linux/COPYING for more information.
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*
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* STMicroelectronics STB peripherals board support.
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*/
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#include <linux/init.h>
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#include <linux/bug.h>
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#include <linux/platform_device.h>
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#include <linux/leds.h>
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#include <linux/gpio.h>
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#include <linux/i2c.h>
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#include <linux/i2c/pcf857x.h>
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#include <linux/spi/spi_gpio.h>
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#include <linux/spi/flash.h>
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#include <linux/mtd/mtd.h>
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#include <linux/mtd/partitions.h>
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#include <linux/stm/stx7200.h>
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#include <asm/processor.h>
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#include <sound/stm.h>
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/* I2C PIO extender (IC23) */
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#define EXTENDER_BASE 200
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static struct i2c_board_info mb520_pio_extender = {
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I2C_BOARD_INFO("pcf857x", 0x27),
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.type = "pcf8575",
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.platform_data = &(struct pcf857x_platform_data) {
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.gpio_base = EXTENDER_BASE,
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},
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};
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#define EXTENDER_GPIO(port, pin) (EXTENDER_BASE + (port * 8) + (pin))
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/* Heartbeat led (LD12-T) */
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static struct platform_device mb520_hb_led = {
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.name = "leds-gpio",
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.id = -1,
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.dev.platform_data = &(struct gpio_led_platform_data) {
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.num_leds = 1,
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.leds = (struct gpio_led[]) {
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{
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.name = "HB",
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.default_trigger = "heartbeat",
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.gpio = stm_gpio(4, 7),
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.active_low = 1,
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},
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},
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},
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};
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#ifdef CONFIG_SND
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/* Audio peripherals
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*
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* The recommended audio setup of MB520 is as follows:
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* 1. Remove R93 (located near SW4 and IC18)
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* 2. Set SW3[1..4] to [OFF, OFF, ON, ON]
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* 3. Set SW5[1..4] to [OFF, ON, ON, OFF]
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* 4. Update EPLD version to revision 7
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*
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* With such settings PCM Player #0 stereo output is available on
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* "INT DACS AUD-0" connectors, PCM Player #1 (first two channels)
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* on "INT DACS AUD-1", and first two channels of PCM Player #3
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* on "EXT DAC". PCM Reader is getting data from "SPDIF PCM IN"
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* connector. */
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/* AK4388 DAC (IC18) */
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static struct platform_device mb520_conv_external_dac = {
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.name = "snd_conv_gpio",
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.id = 0,
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.dev.platform_data = &(struct snd_stm_conv_gpio_info) {
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.group = "External DAC",
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.source_bus_id = "snd_pcm_player.3",
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.channel_from = 0,
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.channel_to = 1,
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.format = SND_STM_FORMAT__I2S |
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SND_STM_FORMAT__SUBFRAME_32_BITS,
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.oversampling = 256,
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.enable_supported = 1,
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.enable_gpio = EXTENDER_GPIO(0, 7),
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.enable_value = 1,
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.mute_supported = 1,
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.mute_gpio = EXTENDER_GPIO(1, 7),
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.mute_value = 1,
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},
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};
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/* CS8416 SPDIF to I2S converter (IC14) */
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static struct platform_device mb520_conv_spdif_to_i2s = {
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.name = "snd_conv_gpio",
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.id = 1,
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.dev.platform_data = &(struct snd_stm_conv_gpio_info) {
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.group = "SPDIF Input",
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.source_bus_id = "snd_pcm_reader.0",
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.channel_from = 0,
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.channel_to = 1,
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.format = SND_STM_FORMAT__I2S |
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SND_STM_FORMAT__SUBFRAME_32_BITS,
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.enable_supported = 1,
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.enable_gpio = EXTENDER_GPIO(1, 6),
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.enable_value = 1,
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.mute_supported = 0,
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},
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};
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#endif
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/* GPIO SPI bus for Serial Flash device */
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static struct platform_device mb520_serial_flash_bus = {
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.name = "spi_gpio",
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.id = 5,
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.num_resources = 0,
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.dev = {
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.platform_data = &(struct spi_gpio_platform_data) {
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.sck = stm_gpio(5, 0),
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.mosi = stm_gpio(5, 1),
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.miso = stm_gpio(6, 1),
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.num_chipselect = 1,
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},
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},
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};
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/* Serial Flash */
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static struct spi_board_info mb520_serial_flash = {
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.bus_num = 5,
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.controller_data = (void *)stm_gpio(5, 2),
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.modalias = "m25p80",
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.max_speed_hz = 1000000,
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.mode = SPI_MODE_3,
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.platform_data = &(struct flash_platform_data) {
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.name = "m25p80",
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.type = "m25p32",
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.nr_parts = 2,
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.parts = (struct mtd_partition []) {
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{
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.name = "Serial Flash 1",
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.size = 0x00080000,
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.offset = 0,
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}, {
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.name = "Serial Flash 2",
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.size = MTDPART_SIZ_FULL,
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.offset = MTDPART_OFS_NXTBLK,
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},
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},
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},
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};
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static struct platform_device *mb520_devices[] __initdata = {
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&mb520_hb_led,
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#ifdef CONFIG_SND
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&mb520_conv_external_dac,
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&mb520_conv_spdif_to_i2s,
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#endif
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&mb520_serial_flash_bus,
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};
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static int __init mb520_devices_init(void)
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{
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int result;
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int periph_i2c_busnum;
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/* This file is (so far) valid only for 7200 processor board! */
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BUG_ON(cpu_data->type != CPU_STX7200);
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/* PWM0 output on TP114 */
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stx7200_configure_pwm(&(struct stx7200_pwm_config) {
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.out0_enabled = 1,
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.out1_enabled = 0, });
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/* Audio outputs - first two channels of the PCM Player #3
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* are available as EXT DAC analog output */
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stx7200_configure_audio(&(struct stx7200_audio_config) {
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.pcm_player_3_routing =
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stx7200_pcm_player_3_aiddig0_auddig1,
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});
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/* SSC configuration */
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stx7200_configure_ssc_i2c(1); /* NIM0 */
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stx7200_configure_ssc_i2c(2); /* NIM1 */
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/* Peripherals - PIO extender and audio (inc. VoIP) devices */
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periph_i2c_busnum = stx7200_configure_ssc_i2c(4);
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/* I2C PIO extender connected do SSC4 */
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result = i2c_register_board_info(periph_i2c_busnum,
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&mb520_pio_extender, 1);
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/* Serial Flash device */
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spi_register_board_info(&mb520_serial_flash, 1);
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/* IR receiver/transmitter */
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stx7200_configure_lirc(&(struct stx7200_lirc_config) {
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.rx_mode = stx7200_lirc_rx_mode_ir,
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.tx_enabled = 1,
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.tx_od_enabled = 1, });
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/* And now platform devices... */
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result |= platform_add_devices(mb520_devices,
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ARRAY_SIZE(mb520_devices));
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return result;
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}
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arch_initcall(mb520_devices_init);
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