2 * Copyright (C) 2008-2009 ST-Ericsson
4 * Author: Srinidhi KASAGAR <srinidhi.kasagar@stericsson.com>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2, as
8 * published by the Free Software Foundation.
11 #include <linux/kernel.h>
12 #include <linux/init.h>
13 #include <linux/interrupt.h>
14 #include <linux/platform_device.h>
16 #include <linux/gpio.h>
17 #include <linux/amba/bus.h>
18 #include <linux/amba/pl022.h>
19 #include <linux/spi/spi.h>
20 #include <linux/mfd/ab8500.h>
22 #include <asm/mach-types.h>
23 #include <asm/mach/arch.h>
25 #include <plat/pincfg.h>
28 #include <mach/hardware.h>
29 #include <mach/setup.h>
30 #include <mach/devices.h>
31 #include <mach/irqs.h>
33 #include "pins-db8500.h"
34 #include "board-mop500.h"
36 static pin_cfg_t mop500_pins[] = {
54 static void ab4500_spi_cs_control(u32 command)
56 /* set the FRM signal, which is CS - TODO */
59 struct pl022_config_chip ab4500_chip_info = {
60 .com_mode = INTERRUPT_TRANSFER,
61 .iface = SSP_INTERFACE_MOTOROLA_SPI,
62 /* we can act as master only */
63 .hierarchy = SSP_MASTER,
64 .slave_tx_disable = 0,
65 .rx_lev_trig = SSP_RX_1_OR_MORE_ELEM,
66 .tx_lev_trig = SSP_TX_1_OR_MORE_EMPTY_LOC,
67 .cs_control = ab4500_spi_cs_control,
70 static struct ab8500_platform_data ab8500_platdata = {
71 .irq_base = MOP500_AB8500_IRQ_BASE,
74 static struct resource ab8500_resources[] = {
78 .flags = IORESOURCE_IRQ
82 struct platform_device ab8500_device = {
86 .platform_data = &ab8500_platdata,
89 .resource = ab8500_resources,
92 static struct spi_board_info ab8500_spi_devices[] = {
94 .modalias = "ab8500-spi",
95 .controller_data = &ab4500_chip_info,
96 .platform_data = &ab8500_platdata,
97 .max_speed_hz = 12000000,
101 .irq = IRQ_DB8500_AB8500,
105 static struct pl022_ssp_controller ssp0_platform_data = {
107 /* pl022 not yet supports dma */
109 /* on this platform, gpio 31,142,144,214 &
110 * 224 are connected as chip selects
115 #define U8500_I2C_CONTROLLER(id, _slsu, _tft, _rft, clk, _sm) \
116 static struct nmk_i2c_controller u8500_i2c##id##_data = { \
118 * slave data setup time, which is \
119 * 250 ns,100ns,10ns which is 14,6,2 \
120 * respectively for a 48 Mhz \
124 /* Tx FIFO threshold */ \
126 /* Rx FIFO threshold */ \
128 /* std. mode operation */ \
134 * The board uses 4 i2c controllers, initialize all of
135 * them with slave data setup time of 250 ns,
136 * Tx & Rx FIFO threshold values as 1 and standard
139 U8500_I2C_CONTROLLER(0, 0xe, 1, 1, 100000, I2C_FREQ_MODE_STANDARD);
140 U8500_I2C_CONTROLLER(1, 0xe, 1, 1, 100000, I2C_FREQ_MODE_STANDARD);
141 U8500_I2C_CONTROLLER(2, 0xe, 1, 1, 100000, I2C_FREQ_MODE_STANDARD);
142 U8500_I2C_CONTROLLER(3, 0xe, 1, 1, 100000, I2C_FREQ_MODE_STANDARD);
144 static struct amba_device *amba_devs[] __initdata = {
151 /* add any platform devices here - TODO */
152 static struct platform_device *platform_devs[] __initdata = {
159 static void __init u8500_init_machine(void)
163 u8500_init_devices();
165 nmk_config_pins(mop500_pins, ARRAY_SIZE(mop500_pins));
167 u8500_i2c0_device.dev.platform_data = &u8500_i2c0_data;
168 ux500_i2c1_device.dev.platform_data = &u8500_i2c1_data;
169 ux500_i2c2_device.dev.platform_data = &u8500_i2c2_data;
170 ux500_i2c3_device.dev.platform_data = &u8500_i2c3_data;
172 u8500_ssp0_device.dev.platform_data = &ssp0_platform_data;
174 /* Register the active AMBA devices on this board */
175 for (i = 0; i < ARRAY_SIZE(amba_devs); i++)
176 amba_device_register(amba_devs[i], &iomem_resource);
178 platform_add_devices(platform_devs, ARRAY_SIZE(platform_devs));
182 /* If HW is early drop (ED) or V1.0 then use SPI to access AB8500 */
183 if (cpu_is_u8500ed() || cpu_is_u8500v10())
184 spi_register_board_info(ab8500_spi_devices,
185 ARRAY_SIZE(ab8500_spi_devices));
186 else /* If HW is v.1.1 or later use I2C to access AB8500 */
187 platform_device_register(&ab8500_device);
190 MACHINE_START(U8500, "ST-Ericsson MOP500 platform")
191 /* Maintainer: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com> */
192 .boot_params = 0x100,
193 .map_io = u8500_map_io,
194 .init_irq = ux500_init_irq,
195 /* we re-use nomadik timer here */
196 .timer = &ux500_timer,
197 .init_machine = u8500_init_machine,