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/*
* Copyright (C) 2008-2009 ST-Ericsson
*
* Author: Srinidhi KASAGAR <srinidhi.kasagar@stericsson.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2, as
* published by the Free Software Foundation.
*
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/platform_device.h>
#include <linux/io.h>
#include <linux/amba/bus.h>
#include <linux/amba/pl022.h>
#include <linux/spi/spi.h>
#include <asm/localtimer.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <plat/mtu.h>
#include <mach/hardware.h>
#include <mach/setup.h>
#define __MEM_4K_RESOURCE(x) \
.res = {.start = (x), .end = (x) + SZ_4K - 1, .flags = IORESOURCE_MEM}
/* These are active devices on this board */
static struct amba_device uart0_device = {
.dev = { .init_name = "uart0" },
__MEM_4K_RESOURCE(U8500_UART0_BASE),
.irq = {IRQ_UART0, NO_IRQ},
};
static struct amba_device uart1_device = {
.dev = { .init_name = "uart1" },
__MEM_4K_RESOURCE(U8500_UART1_BASE),
.irq = {IRQ_UART1, NO_IRQ},
};
static struct amba_device uart2_device = {
.dev = { .init_name = "uart2" },
__MEM_4K_RESOURCE(U8500_UART2_BASE),
.irq = {IRQ_UART2, NO_IRQ},
};
static void ab4500_spi_cs_control(u32 command)
{
/* set the FRM signal, which is CS - TODO */
}
struct pl022_config_chip ab4500_chip_info = {
.lbm = LOOPBACK_DISABLED,
.com_mode = INTERRUPT_TRANSFER,
.iface = SSP_INTERFACE_MOTOROLA_SPI,
/* we can act as master only */
.hierarchy = SSP_MASTER,
.slave_tx_disable = 0,
.endian_rx = SSP_RX_MSB,
.endian_tx = SSP_TX_MSB,
.data_size = SSP_DATA_BITS_24,
.rx_lev_trig = SSP_RX_1_OR_MORE_ELEM,
.tx_lev_trig = SSP_TX_1_OR_MORE_EMPTY_LOC,
.clk_phase = SSP_CLK_SECOND_EDGE,
.clk_pol = SSP_CLK_POL_IDLE_HIGH,
.cs_control = ab4500_spi_cs_control,
};
static struct spi_board_info u8500_spi_devices[] = {
{
.modalias = "ab4500",
.controller_data = &ab4500_chip_info,
.max_speed_hz = 12000000,
.bus_num = 0,
.chip_select = 0,
.mode = SPI_MODE_0,
.irq = IRQ_AB4500,
},
};
static struct pl022_ssp_controller ssp0_platform_data = {
.bus_id = 0,
/* pl022 not yet supports dma */
.enable_dma = 0,
/* on this platform, gpio 31,142,144,214 &
* 224 are connected as chip selects
*/
.num_chipselect = 5,
};
static struct amba_device pl022_device = {
.dev = {
.coherent_dma_mask = ~0,
.init_name = "pl022",
.platform_data = &ssp0_platform_data,
},
.res = {
.start = U8500_SSP0_BASE,
.end = U8500_SSP0_BASE + SZ_4K - 1,
.flags = IORESOURCE_MEM,
},
.irq = {IRQ_SSP0, NO_IRQ },
/* ST-Ericsson modified id */
.periphid = SSP_PER_ID,
};
static struct amba_device *amba_devs[] __initdata = {
&uart0_device,
&uart1_device,
&uart2_device,
&pl022_device,
};
static void __init u8500_timer_init(void)
{
#ifdef CONFIG_LOCAL_TIMERS
/* Setup the local timer base */
twd_base = __io_address(U8500_TWD_BASE);
#endif
/* Setup the MTU base */
mtu_base = __io_address(U8500_MTU0_BASE);
nmdk_timer_init();
}
static struct sys_timer u8500_timer = {
.init = u8500_timer_init,
};
static void __init u8500_init_machine(void)
{
int i;
/* Register the active AMBA devices on this board */
for (i = 0; i < ARRAY_SIZE(amba_devs); i++)
amba_device_register(amba_devs[i], &iomem_resource);
spi_register_board_info(u8500_spi_devices,
ARRAY_SIZE(u8500_spi_devices));
u8500_init_devices();
}
MACHINE_START(U8500, "ST-Ericsson MOP500 platform")
/* Maintainer: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com> */
.phys_io = U8500_UART2_BASE,
.io_pg_offst = (IO_ADDRESS(U8500_UART2_BASE) >> 18) & 0xfffc,
.boot_params = 0x100,
.map_io = u8500_map_io,
.init_irq = u8500_init_irq,
/* we re-use nomadik timer here */
.timer = &u8500_timer,
.init_machine = u8500_init_machine,
MACHINE_END
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