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Srinidhi Kasagaraa44ef42009-11-28 08:17:18 +01001/*
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>
Rabin Vincentea05a572010-06-03 07:58:42 +010016#include <linux/gpio.h>
Srinidhi Kasagaraa44ef42009-11-28 08:17:18 +010017#include <linux/amba/bus.h>
18#include <linux/amba/pl022.h>
19#include <linux/spi/spi.h>
Rabin Vincent39ae7022010-07-26 11:12:15 +010020#include <linux/mfd/ab8500.h>
Srinidhi Kasagaraa44ef42009-11-28 08:17:18 +010021
Srinidhi Kasagaraa44ef42009-11-28 08:17:18 +010022#include <asm/mach-types.h>
23#include <asm/mach/arch.h>
24
Rabin Vincentea05a572010-06-03 07:58:42 +010025#include <plat/pincfg.h>
Srinidhi Kasagard48a41c2010-02-03 13:02:48 +010026#include <plat/i2c.h>
Srinidhi Kasagaraa44ef42009-11-28 08:17:18 +010027
28#include <mach/hardware.h>
29#include <mach/setup.h>
Rabin Vincent9e4e7fe2010-05-03 08:03:52 +010030#include <mach/devices.h>
Srinidhi Kasagaraa44ef42009-11-28 08:17:18 +010031
Rabin Vincentea05a572010-06-03 07:58:42 +010032#include "pins-db8500.h"
33
34static pin_cfg_t mop500_pins[] = {
35 /* SSP0 */
36 GPIO143_SSP0_CLK,
37 GPIO144_SSP0_FRM,
38 GPIO145_SSP0_RXD,
39 GPIO146_SSP0_TXD,
40
41 /* I2C */
42 GPIO147_I2C0_SCL,
43 GPIO148_I2C0_SDA,
44 GPIO16_I2C1_SCL,
45 GPIO17_I2C1_SDA,
46 GPIO10_I2C2_SDA,
47 GPIO11_I2C2_SCL,
48 GPIO229_I2C3_SDA,
49 GPIO230_I2C3_SCL,
50};
51
Srinidhi Kasagaraa44ef42009-11-28 08:17:18 +010052static void ab4500_spi_cs_control(u32 command)
53{
54 /* set the FRM signal, which is CS - TODO */
55}
56
57struct pl022_config_chip ab4500_chip_info = {
58 .lbm = LOOPBACK_DISABLED,
59 .com_mode = INTERRUPT_TRANSFER,
60 .iface = SSP_INTERFACE_MOTOROLA_SPI,
61 /* we can act as master only */
62 .hierarchy = SSP_MASTER,
63 .slave_tx_disable = 0,
64 .endian_rx = SSP_RX_MSB,
65 .endian_tx = SSP_TX_MSB,
66 .data_size = SSP_DATA_BITS_24,
67 .rx_lev_trig = SSP_RX_1_OR_MORE_ELEM,
68 .tx_lev_trig = SSP_TX_1_OR_MORE_EMPTY_LOC,
69 .clk_phase = SSP_CLK_SECOND_EDGE,
70 .clk_pol = SSP_CLK_POL_IDLE_HIGH,
71 .cs_control = ab4500_spi_cs_control,
72};
73
Rabin Vincent39ae7022010-07-26 11:12:15 +010074static struct ab8500_platform_data ab8500_platdata = {
75 .irq_base = MOP500_AB8500_IRQ_BASE,
76};
77
Srinidhi Kasagaraa44ef42009-11-28 08:17:18 +010078static struct spi_board_info u8500_spi_devices[] = {
79 {
Rabin Vincent62579262010-05-19 11:39:02 +020080 .modalias = "ab8500",
Srinidhi Kasagaraa44ef42009-11-28 08:17:18 +010081 .controller_data = &ab4500_chip_info,
Rabin Vincent39ae7022010-07-26 11:12:15 +010082 .platform_data = &ab8500_platdata,
Srinidhi Kasagaraa44ef42009-11-28 08:17:18 +010083 .max_speed_hz = 12000000,
84 .bus_num = 0,
85 .chip_select = 0,
86 .mode = SPI_MODE_0,
Rabin Vincent60559302010-07-26 11:09:27 +010087 .irq = IRQ_DB8500_AB8500,
Srinidhi Kasagaraa44ef42009-11-28 08:17:18 +010088 },
89};
90
91static struct pl022_ssp_controller ssp0_platform_data = {
92 .bus_id = 0,
93 /* pl022 not yet supports dma */
94 .enable_dma = 0,
95 /* on this platform, gpio 31,142,144,214 &
96 * 224 are connected as chip selects
97 */
98 .num_chipselect = 5,
99};
100
Srinidhi Kasagard48a41c2010-02-03 13:02:48 +0100101#define U8500_I2C_CONTROLLER(id, _slsu, _tft, _rft, clk, _sm) \
Rabin Vincentf9faf232010-05-03 08:24:37 +0100102static struct nmk_i2c_controller u8500_i2c##id##_data = { \
Srinidhi Kasagard48a41c2010-02-03 13:02:48 +0100103 /* \
104 * slave data setup time, which is \
105 * 250 ns,100ns,10ns which is 14,6,2 \
106 * respectively for a 48 Mhz \
107 * i2c clock \
108 */ \
109 .slsu = _slsu, \
110 /* Tx FIFO threshold */ \
111 .tft = _tft, \
112 /* Rx FIFO threshold */ \
113 .rft = _rft, \
114 /* std. mode operation */ \
115 .clk_freq = clk, \
116 .sm = _sm, \
117}
118
119/*
120 * The board uses 4 i2c controllers, initialize all of
121 * them with slave data setup time of 250 ns,
122 * Tx & Rx FIFO threshold values as 1 and standard
123 * mode of operation
124 */
125U8500_I2C_CONTROLLER(0, 0xe, 1, 1, 100000, I2C_FREQ_MODE_STANDARD);
126U8500_I2C_CONTROLLER(1, 0xe, 1, 1, 100000, I2C_FREQ_MODE_STANDARD);
127U8500_I2C_CONTROLLER(2, 0xe, 1, 1, 100000, I2C_FREQ_MODE_STANDARD);
128U8500_I2C_CONTROLLER(3, 0xe, 1, 1, 100000, I2C_FREQ_MODE_STANDARD);
129
Srinidhi Kasagaraa44ef42009-11-28 08:17:18 +0100130static struct amba_device *amba_devs[] __initdata = {
Rabin Vincent4b27aa42010-05-03 08:18:38 +0100131 &ux500_uart0_device,
132 &ux500_uart1_device,
133 &ux500_uart2_device,
Rabin Vincent9e4e7fe2010-05-03 08:03:52 +0100134 &u8500_ssp0_device,
Srinidhi Kasagaraa44ef42009-11-28 08:17:18 +0100135};
136
Srinidhi Kasagard48a41c2010-02-03 13:02:48 +0100137/* add any platform devices here - TODO */
138static struct platform_device *platform_devs[] __initdata = {
Rabin Vincentf9faf232010-05-03 08:24:37 +0100139 &u8500_i2c0_device,
140 &ux500_i2c1_device,
141 &ux500_i2c2_device,
142 &ux500_i2c3_device,
Srinidhi Kasagard48a41c2010-02-03 13:02:48 +0100143};
144
Srinidhi Kasagaraa44ef42009-11-28 08:17:18 +0100145static void __init u8500_init_machine(void)
146{
147 int i;
148
Rabin Vincentea05a572010-06-03 07:58:42 +0100149 u8500_init_devices();
150
151 nmk_config_pins(mop500_pins, ARRAY_SIZE(mop500_pins));
152
Rabin Vincentf9faf232010-05-03 08:24:37 +0100153 u8500_i2c0_device.dev.platform_data = &u8500_i2c0_data;
154 ux500_i2c1_device.dev.platform_data = &u8500_i2c1_data;
155 ux500_i2c2_device.dev.platform_data = &u8500_i2c2_data;
156 ux500_i2c3_device.dev.platform_data = &u8500_i2c3_data;
157
Rabin Vincent9e4e7fe2010-05-03 08:03:52 +0100158 u8500_ssp0_device.dev.platform_data = &ssp0_platform_data;
159
Srinidhi Kasagaraa44ef42009-11-28 08:17:18 +0100160 /* Register the active AMBA devices on this board */
161 for (i = 0; i < ARRAY_SIZE(amba_devs); i++)
162 amba_device_register(amba_devs[i], &iomem_resource);
163
Srinidhi Kasagard48a41c2010-02-03 13:02:48 +0100164 platform_add_devices(platform_devs, ARRAY_SIZE(platform_devs));
165
Srinidhi Kasagaraa44ef42009-11-28 08:17:18 +0100166 spi_register_board_info(u8500_spi_devices,
167 ARRAY_SIZE(u8500_spi_devices));
Srinidhi Kasagaraa44ef42009-11-28 08:17:18 +0100168}
169
170MACHINE_START(U8500, "ST-Ericsson MOP500 platform")
171 /* Maintainer: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com> */
172 .phys_io = U8500_UART2_BASE,
173 .io_pg_offst = (IO_ADDRESS(U8500_UART2_BASE) >> 18) & 0xfffc,
174 .boot_params = 0x100,
175 .map_io = u8500_map_io,
Rabin Vincent178980f2010-05-03 07:39:02 +0100176 .init_irq = ux500_init_irq,
Srinidhi Kasagaraa44ef42009-11-28 08:17:18 +0100177 /* we re-use nomadik timer here */
Rabin Vincent41ac3292010-05-03 08:28:05 +0100178 .timer = &ux500_timer,
Srinidhi Kasagaraa44ef42009-11-28 08:17:18 +0100179 .init_machine = u8500_init_machine,
180MACHINE_END