satip-axe/kernel/arch/sh/boards/mach-st/mb520.c
2015-03-26 17:24:57 +01:00

222 lines
5.3 KiB
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);