Merge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jlbec...
[sfrench/cifs-2.6.git] / arch / arm / mach-ux500 / board-mop500.c
1 /*
2  * Copyright (C) 2008-2009 ST-Ericsson
3  *
4  * Author: Srinidhi KASAGAR <srinidhi.kasagar@stericsson.com>
5  *
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.
9  *
10  */
11 #include <linux/kernel.h>
12 #include <linux/init.h>
13 #include <linux/interrupt.h>
14 #include <linux/platform_device.h>
15 #include <linux/io.h>
16 #include <linux/amba/bus.h>
17 #include <linux/amba/pl022.h>
18 #include <linux/spi/spi.h>
19
20 #include <asm/localtimer.h>
21 #include <asm/mach-types.h>
22 #include <asm/mach/arch.h>
23
24 #include <plat/mtu.h>
25
26 #include <mach/hardware.h>
27 #include <mach/setup.h>
28
29 #define __MEM_4K_RESOURCE(x) \
30         .res = {.start = (x), .end = (x) + SZ_4K - 1, .flags = IORESOURCE_MEM}
31
32 /* These are active devices on this board */
33 static struct amba_device uart0_device = {
34         .dev = { .init_name = "uart0" },
35         __MEM_4K_RESOURCE(U8500_UART0_BASE),
36         .irq = {IRQ_UART0, NO_IRQ},
37 };
38
39 static struct amba_device uart1_device = {
40         .dev = { .init_name = "uart1" },
41         __MEM_4K_RESOURCE(U8500_UART1_BASE),
42         .irq = {IRQ_UART1, NO_IRQ},
43 };
44
45 static struct amba_device uart2_device = {
46         .dev = { .init_name = "uart2" },
47         __MEM_4K_RESOURCE(U8500_UART2_BASE),
48         .irq = {IRQ_UART2, NO_IRQ},
49 };
50
51 static void ab4500_spi_cs_control(u32 command)
52 {
53         /* set the FRM signal, which is CS  - TODO */
54 }
55
56 struct pl022_config_chip ab4500_chip_info = {
57         .lbm = LOOPBACK_DISABLED,
58         .com_mode = INTERRUPT_TRANSFER,
59         .iface = SSP_INTERFACE_MOTOROLA_SPI,
60         /* we can act as master only */
61         .hierarchy = SSP_MASTER,
62         .slave_tx_disable = 0,
63         .endian_rx = SSP_RX_MSB,
64         .endian_tx = SSP_TX_MSB,
65         .data_size = SSP_DATA_BITS_24,
66         .rx_lev_trig = SSP_RX_1_OR_MORE_ELEM,
67         .tx_lev_trig = SSP_TX_1_OR_MORE_EMPTY_LOC,
68         .clk_phase = SSP_CLK_SECOND_EDGE,
69         .clk_pol = SSP_CLK_POL_IDLE_HIGH,
70         .cs_control = ab4500_spi_cs_control,
71 };
72
73 static struct spi_board_info u8500_spi_devices[] = {
74         {
75                 .modalias = "ab4500",
76                 .controller_data = &ab4500_chip_info,
77                 .max_speed_hz = 12000000,
78                 .bus_num = 0,
79                 .chip_select = 0,
80                 .mode = SPI_MODE_0,
81                 .irq = IRQ_AB4500,
82         },
83 };
84
85 static struct pl022_ssp_controller ssp0_platform_data = {
86         .bus_id = 0,
87         /* pl022 not yet supports dma */
88         .enable_dma = 0,
89         /* on this platform, gpio 31,142,144,214 &
90          * 224 are connected as chip selects
91          */
92         .num_chipselect = 5,
93 };
94
95 static struct amba_device pl022_device = {
96         .dev = {
97                 .coherent_dma_mask = ~0,
98                 .init_name = "pl022",
99                 .platform_data = &ssp0_platform_data,
100         },
101         .res = {
102                 .start = U8500_SSP0_BASE,
103                 .end   = U8500_SSP0_BASE + SZ_4K - 1,
104                 .flags = IORESOURCE_MEM,
105         },
106         .irq = {IRQ_SSP0, NO_IRQ },
107         /* ST-Ericsson modified id */
108         .periphid = SSP_PER_ID,
109 };
110
111 static struct amba_device *amba_devs[] __initdata = {
112         &uart0_device,
113         &uart1_device,
114         &uart2_device,
115         &pl022_device,
116 };
117
118 static void __init u8500_timer_init(void)
119 {
120 #ifdef CONFIG_LOCAL_TIMERS
121         /* Setup the local timer base */
122         twd_base = __io_address(U8500_TWD_BASE);
123 #endif
124         /* Setup the MTU base */
125         mtu_base = __io_address(U8500_MTU0_BASE);
126
127         nmdk_timer_init();
128 }
129
130 static struct sys_timer u8500_timer = {
131         .init   = u8500_timer_init,
132 };
133
134 static void __init u8500_init_machine(void)
135 {
136         int i;
137
138         /* Register the active AMBA devices on this board */
139         for (i = 0; i < ARRAY_SIZE(amba_devs); i++)
140                 amba_device_register(amba_devs[i], &iomem_resource);
141
142         spi_register_board_info(u8500_spi_devices,
143                         ARRAY_SIZE(u8500_spi_devices));
144
145         u8500_init_devices();
146 }
147
148 MACHINE_START(U8500, "ST-Ericsson MOP500 platform")
149         /* Maintainer: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com> */
150         .phys_io        = U8500_UART2_BASE,
151         .io_pg_offst    = (IO_ADDRESS(U8500_UART2_BASE) >> 18) & 0xfffc,
152         .boot_params    = 0x100,
153         .map_io         = u8500_map_io,
154         .init_irq       = u8500_init_irq,
155         /* we re-use nomadik timer here */
156         .timer          = &u8500_timer,
157         .init_machine   = u8500_init_machine,
158 MACHINE_END