mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
synced 2025-10-31 09:36:25 +00:00
39ae702cd3
Add the platform data to enable AB8500 interrupt support. Acked-by: Linus Walleij <linus.walleij@stericsson.com> Acked-by: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com> Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
181 lines
4.6 KiB
C
181 lines
4.6 KiB
C
/*
|
|
* 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/gpio.h>
|
|
#include <linux/amba/bus.h>
|
|
#include <linux/amba/pl022.h>
|
|
#include <linux/spi/spi.h>
|
|
#include <linux/mfd/ab8500.h>
|
|
|
|
#include <asm/mach-types.h>
|
|
#include <asm/mach/arch.h>
|
|
|
|
#include <plat/pincfg.h>
|
|
#include <plat/i2c.h>
|
|
|
|
#include <mach/hardware.h>
|
|
#include <mach/setup.h>
|
|
#include <mach/devices.h>
|
|
|
|
#include "pins-db8500.h"
|
|
|
|
static pin_cfg_t mop500_pins[] = {
|
|
/* SSP0 */
|
|
GPIO143_SSP0_CLK,
|
|
GPIO144_SSP0_FRM,
|
|
GPIO145_SSP0_RXD,
|
|
GPIO146_SSP0_TXD,
|
|
|
|
/* I2C */
|
|
GPIO147_I2C0_SCL,
|
|
GPIO148_I2C0_SDA,
|
|
GPIO16_I2C1_SCL,
|
|
GPIO17_I2C1_SDA,
|
|
GPIO10_I2C2_SDA,
|
|
GPIO11_I2C2_SCL,
|
|
GPIO229_I2C3_SDA,
|
|
GPIO230_I2C3_SCL,
|
|
};
|
|
|
|
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 ab8500_platform_data ab8500_platdata = {
|
|
.irq_base = MOP500_AB8500_IRQ_BASE,
|
|
};
|
|
|
|
static struct spi_board_info u8500_spi_devices[] = {
|
|
{
|
|
.modalias = "ab8500",
|
|
.controller_data = &ab4500_chip_info,
|
|
.platform_data = &ab8500_platdata,
|
|
.max_speed_hz = 12000000,
|
|
.bus_num = 0,
|
|
.chip_select = 0,
|
|
.mode = SPI_MODE_0,
|
|
.irq = IRQ_DB8500_AB8500,
|
|
},
|
|
};
|
|
|
|
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,
|
|
};
|
|
|
|
#define U8500_I2C_CONTROLLER(id, _slsu, _tft, _rft, clk, _sm) \
|
|
static struct nmk_i2c_controller u8500_i2c##id##_data = { \
|
|
/* \
|
|
* slave data setup time, which is \
|
|
* 250 ns,100ns,10ns which is 14,6,2 \
|
|
* respectively for a 48 Mhz \
|
|
* i2c clock \
|
|
*/ \
|
|
.slsu = _slsu, \
|
|
/* Tx FIFO threshold */ \
|
|
.tft = _tft, \
|
|
/* Rx FIFO threshold */ \
|
|
.rft = _rft, \
|
|
/* std. mode operation */ \
|
|
.clk_freq = clk, \
|
|
.sm = _sm, \
|
|
}
|
|
|
|
/*
|
|
* The board uses 4 i2c controllers, initialize all of
|
|
* them with slave data setup time of 250 ns,
|
|
* Tx & Rx FIFO threshold values as 1 and standard
|
|
* mode of operation
|
|
*/
|
|
U8500_I2C_CONTROLLER(0, 0xe, 1, 1, 100000, I2C_FREQ_MODE_STANDARD);
|
|
U8500_I2C_CONTROLLER(1, 0xe, 1, 1, 100000, I2C_FREQ_MODE_STANDARD);
|
|
U8500_I2C_CONTROLLER(2, 0xe, 1, 1, 100000, I2C_FREQ_MODE_STANDARD);
|
|
U8500_I2C_CONTROLLER(3, 0xe, 1, 1, 100000, I2C_FREQ_MODE_STANDARD);
|
|
|
|
static struct amba_device *amba_devs[] __initdata = {
|
|
&ux500_uart0_device,
|
|
&ux500_uart1_device,
|
|
&ux500_uart2_device,
|
|
&u8500_ssp0_device,
|
|
};
|
|
|
|
/* add any platform devices here - TODO */
|
|
static struct platform_device *platform_devs[] __initdata = {
|
|
&u8500_i2c0_device,
|
|
&ux500_i2c1_device,
|
|
&ux500_i2c2_device,
|
|
&ux500_i2c3_device,
|
|
};
|
|
|
|
static void __init u8500_init_machine(void)
|
|
{
|
|
int i;
|
|
|
|
u8500_init_devices();
|
|
|
|
nmk_config_pins(mop500_pins, ARRAY_SIZE(mop500_pins));
|
|
|
|
u8500_i2c0_device.dev.platform_data = &u8500_i2c0_data;
|
|
ux500_i2c1_device.dev.platform_data = &u8500_i2c1_data;
|
|
ux500_i2c2_device.dev.platform_data = &u8500_i2c2_data;
|
|
ux500_i2c3_device.dev.platform_data = &u8500_i2c3_data;
|
|
|
|
u8500_ssp0_device.dev.platform_data = &ssp0_platform_data;
|
|
|
|
/* 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);
|
|
|
|
platform_add_devices(platform_devs, ARRAY_SIZE(platform_devs));
|
|
|
|
spi_register_board_info(u8500_spi_devices,
|
|
ARRAY_SIZE(u8500_spi_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 = ux500_init_irq,
|
|
/* we re-use nomadik timer here */
|
|
.timer = &ux500_timer,
|
|
.init_machine = u8500_init_machine,
|
|
MACHINE_END
|