summaryrefslogtreecommitdiffstats
path: root/arch/arm/mach-ux500/board-mop500.c
blob: 4fb23e2e2cd50be921287dafcea26e7787adaa26 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
/*
 * 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 <mach/irqs.h>

#include "pins-db8500.h"
#include "board-mop500.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 resource ab8500_resources[] = {
	[0] = {
		.start = IRQ_AB8500,
		.end = IRQ_AB8500,
		.flags = IORESOURCE_IRQ
	}
};

struct platform_device ab8500_device = {
	.name = "ab8500-i2c",
	.id = 0,
	.dev = {
		.platform_data = &ab8500_platdata,
	},
	.num_resources = 1,
	.resource = ab8500_resources,
};

static struct spi_board_info ab8500_spi_devices[] = {
	{
		.modalias = "ab8500-spi",
		.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));

	mop500_sdi_init();

	/* If HW is early drop (ED) or V1.0 then use SPI to access AB8500 */
	if (cpu_is_u8500ed() || cpu_is_u8500v10())
		spi_register_board_info(ab8500_spi_devices,
			ARRAY_SIZE(ab8500_spi_devices));
	else /* If HW is v.1.1 or later use I2C to access AB8500 */
		platform_device_register(&ab8500_device);
}

MACHINE_START(U8500, "ST-Ericsson MOP500 platform")
	/* Maintainer: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com> */
	.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