Merge branch 'drm-intel-next' of git://git.kernel.org/pub/scm/linux/kernel/git/anholt...
[pandora-kernel.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/mach-types.h>
21 #include <asm/mach/arch.h>
22
23 #include <plat/i2c.h>
24
25 #include <mach/hardware.h>
26 #include <mach/setup.h>
27 #include <mach/devices.h>
28
29 static void ab4500_spi_cs_control(u32 command)
30 {
31         /* set the FRM signal, which is CS  - TODO */
32 }
33
34 struct pl022_config_chip ab4500_chip_info = {
35         .lbm = LOOPBACK_DISABLED,
36         .com_mode = INTERRUPT_TRANSFER,
37         .iface = SSP_INTERFACE_MOTOROLA_SPI,
38         /* we can act as master only */
39         .hierarchy = SSP_MASTER,
40         .slave_tx_disable = 0,
41         .endian_rx = SSP_RX_MSB,
42         .endian_tx = SSP_TX_MSB,
43         .data_size = SSP_DATA_BITS_24,
44         .rx_lev_trig = SSP_RX_1_OR_MORE_ELEM,
45         .tx_lev_trig = SSP_TX_1_OR_MORE_EMPTY_LOC,
46         .clk_phase = SSP_CLK_SECOND_EDGE,
47         .clk_pol = SSP_CLK_POL_IDLE_HIGH,
48         .cs_control = ab4500_spi_cs_control,
49 };
50
51 static struct spi_board_info u8500_spi_devices[] = {
52         {
53                 .modalias = "ab8500",
54                 .controller_data = &ab4500_chip_info,
55                 .max_speed_hz = 12000000,
56                 .bus_num = 0,
57                 .chip_select = 0,
58                 .mode = SPI_MODE_0,
59                 .irq = IRQ_AB4500,
60         },
61 };
62
63 static struct pl022_ssp_controller ssp0_platform_data = {
64         .bus_id = 0,
65         /* pl022 not yet supports dma */
66         .enable_dma = 0,
67         /* on this platform, gpio 31,142,144,214 &
68          * 224 are connected as chip selects
69          */
70         .num_chipselect = 5,
71 };
72
73 #define U8500_I2C_CONTROLLER(id, _slsu, _tft, _rft, clk, _sm) \
74 static struct nmk_i2c_controller u8500_i2c##id##_data = { \
75         /*                              \
76          * slave data setup time, which is      \
77          * 250 ns,100ns,10ns which is 14,6,2    \
78          * respectively for a 48 Mhz    \
79          * i2c clock                    \
80          */                             \
81         .slsu           = _slsu,        \
82         /* Tx FIFO threshold */         \
83         .tft            = _tft,         \
84         /* Rx FIFO threshold */         \
85         .rft            = _rft,         \
86         /* std. mode operation */       \
87         .clk_freq       = clk,          \
88         .sm             = _sm,          \
89 }
90
91 /*
92  * The board uses 4 i2c controllers, initialize all of
93  * them with slave data setup time of 250 ns,
94  * Tx & Rx FIFO threshold values as 1 and standard
95  * mode of operation
96  */
97 U8500_I2C_CONTROLLER(0, 0xe, 1, 1, 100000, I2C_FREQ_MODE_STANDARD);
98 U8500_I2C_CONTROLLER(1, 0xe, 1, 1, 100000, I2C_FREQ_MODE_STANDARD);
99 U8500_I2C_CONTROLLER(2, 0xe, 1, 1, 100000, I2C_FREQ_MODE_STANDARD);
100 U8500_I2C_CONTROLLER(3, 0xe, 1, 1, 100000, I2C_FREQ_MODE_STANDARD);
101
102 static struct amba_device *amba_devs[] __initdata = {
103         &ux500_uart0_device,
104         &ux500_uart1_device,
105         &ux500_uart2_device,
106         &u8500_ssp0_device,
107 };
108
109 /* add any platform devices here - TODO */
110 static struct platform_device *platform_devs[] __initdata = {
111         &u8500_i2c0_device,
112         &ux500_i2c1_device,
113         &ux500_i2c2_device,
114         &ux500_i2c3_device,
115 };
116
117 static void __init u8500_init_machine(void)
118 {
119         int i;
120
121         u8500_i2c0_device.dev.platform_data = &u8500_i2c0_data;
122         ux500_i2c1_device.dev.platform_data = &u8500_i2c1_data;
123         ux500_i2c2_device.dev.platform_data = &u8500_i2c2_data;
124         ux500_i2c3_device.dev.platform_data = &u8500_i2c3_data;
125
126         u8500_ssp0_device.dev.platform_data = &ssp0_platform_data;
127
128         /* Register the active AMBA devices on this board */
129         for (i = 0; i < ARRAY_SIZE(amba_devs); i++)
130                 amba_device_register(amba_devs[i], &iomem_resource);
131
132         platform_add_devices(platform_devs, ARRAY_SIZE(platform_devs));
133
134         spi_register_board_info(u8500_spi_devices,
135                         ARRAY_SIZE(u8500_spi_devices));
136
137         u8500_init_devices();
138 }
139
140 MACHINE_START(U8500, "ST-Ericsson MOP500 platform")
141         /* Maintainer: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com> */
142         .phys_io        = U8500_UART2_BASE,
143         .io_pg_offst    = (IO_ADDRESS(U8500_UART2_BASE) >> 18) & 0xfffc,
144         .boot_params    = 0x100,
145         .map_io         = u8500_map_io,
146         .init_irq       = ux500_init_irq,
147         /* we re-use nomadik timer here */
148         .timer          = &ux500_timer,
149         .init_machine   = u8500_init_machine,
150 MACHINE_END