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>
21 #include <linux/input/matrix_keypad.h>
23 #include <asm/mach-types.h>
24 #include <asm/mach/arch.h>
26 #include <plat/pincfg.h>
30 #include <mach/hardware.h>
31 #include <mach/setup.h>
32 #include <mach/devices.h>
33 #include <mach/irqs.h>
35 #include "pins-db8500.h"
36 #include "board-mop500.h"
38 static pin_cfg_t mop500_pins[] = {
74 static void ab4500_spi_cs_control(u32 command)
76 /* set the FRM signal, which is CS - TODO */
79 struct pl022_config_chip ab4500_chip_info = {
80 .com_mode = INTERRUPT_TRANSFER,
81 .iface = SSP_INTERFACE_MOTOROLA_SPI,
82 /* we can act as master only */
83 .hierarchy = SSP_MASTER,
84 .slave_tx_disable = 0,
85 .rx_lev_trig = SSP_RX_1_OR_MORE_ELEM,
86 .tx_lev_trig = SSP_TX_1_OR_MORE_EMPTY_LOC,
87 .cs_control = ab4500_spi_cs_control,
90 static struct ab8500_platform_data ab8500_platdata = {
91 .irq_base = MOP500_AB8500_IRQ_BASE,
94 static struct resource ab8500_resources[] = {
98 .flags = IORESOURCE_IRQ
102 struct platform_device ab8500_device = {
103 .name = "ab8500-i2c",
106 .platform_data = &ab8500_platdata,
109 .resource = ab8500_resources,
112 static struct spi_board_info ab8500_spi_devices[] = {
114 .modalias = "ab8500-spi",
115 .controller_data = &ab4500_chip_info,
116 .platform_data = &ab8500_platdata,
117 .max_speed_hz = 12000000,
121 .irq = IRQ_DB8500_AB8500,
125 static struct pl022_ssp_controller ssp0_platform_data = {
127 /* pl022 not yet supports dma */
129 /* on this platform, gpio 31,142,144,214 &
130 * 224 are connected as chip selects
135 #define U8500_I2C_CONTROLLER(id, _slsu, _tft, _rft, clk, _sm) \
136 static struct nmk_i2c_controller u8500_i2c##id##_data = { \
138 * slave data setup time, which is \
139 * 250 ns,100ns,10ns which is 14,6,2 \
140 * respectively for a 48 Mhz \
144 /* Tx FIFO threshold */ \
146 /* Rx FIFO threshold */ \
148 /* std. mode operation */ \
154 * The board uses 4 i2c controllers, initialize all of
155 * them with slave data setup time of 250 ns,
156 * Tx & Rx FIFO threshold values as 1 and standard
159 U8500_I2C_CONTROLLER(0, 0xe, 1, 1, 100000, I2C_FREQ_MODE_STANDARD);
160 U8500_I2C_CONTROLLER(1, 0xe, 1, 1, 100000, I2C_FREQ_MODE_STANDARD);
161 U8500_I2C_CONTROLLER(2, 0xe, 1, 1, 100000, I2C_FREQ_MODE_STANDARD);
162 U8500_I2C_CONTROLLER(3, 0xe, 1, 1, 100000, I2C_FREQ_MODE_STANDARD);
164 static struct amba_device *amba_devs[] __initdata = {
171 static const unsigned int ux500_keymap[] = {
173 KEY(4, 1, KEY_POWER),
174 KEY(3, 5, KEY_VOLUMEDOWN),
176 KEY(5, 2, KEY_RIGHT),
180 KEY(7, 6, KEY_ENTER),
188 KEY(4, 2, KEY_VOLUMEUP),
194 static const struct matrix_keymap_data ux500_keymap_data = {
195 .keymap = ux500_keymap,
196 .keymap_size = ARRAY_SIZE(ux500_keymap),
202 #define ROW_PIN_I0 164
203 #define ROW_PIN_I1 163
204 #define ROW_PIN_I2 162
205 #define ROW_PIN_I3 161
206 #define ROW_PIN_I4 156
207 #define ROW_PIN_I5 155
208 #define ROW_PIN_I6 154
209 #define ROW_PIN_I7 153
210 #define COL_PIN_O0 168
211 #define COL_PIN_O1 167
212 #define COL_PIN_O2 166
213 #define COL_PIN_O3 165
214 #define COL_PIN_O4 160
215 #define COL_PIN_O5 159
216 #define COL_PIN_O6 158
217 #define COL_PIN_O7 157
219 #define SKE_KPD_MAX_ROWS 8
220 #define SKE_KPD_MAX_COLS 8
222 static int ske_kp_rows[] = {
223 ROW_PIN_I0, ROW_PIN_I1, ROW_PIN_I2, ROW_PIN_I3,
224 ROW_PIN_I4, ROW_PIN_I5, ROW_PIN_I6, ROW_PIN_I7,
228 * ske_set_gpio_row: request and set gpio rows
230 static int ske_set_gpio_row(int gpio)
234 ret = gpio_request(gpio, "ske-kp");
236 pr_err("ske_set_gpio_row: gpio request failed\n");
240 ret = gpio_direction_output(gpio, 1);
242 pr_err("ske_set_gpio_row: gpio direction failed\n");
250 * ske_kp_init - enable the gpio configuration
252 static int ske_kp_init(void)
256 for (i = 0; i < SKE_KPD_MAX_ROWS; i++) {
257 ret = ske_set_gpio_row(ske_kp_rows[i]);
259 pr_err("ske_kp_init: failed init\n");
267 static struct ske_keypad_platform_data ske_keypad_board = {
269 .keymap_data = &ux500_keymap_data,
270 .no_autorepeat = true,
271 .krow = SKE_KPD_MAX_ROWS, /* 8x8 matrix */
272 .kcol = SKE_KPD_MAX_COLS,
273 .debounce_ms = 40, /* in millsecs */
278 /* add any platform devices here - TODO */
279 static struct platform_device *platform_devs[] __initdata = {
284 &ux500_ske_keypad_device,
287 static void __init u8500_init_machine(void)
291 u8500_init_devices();
293 nmk_config_pins(mop500_pins, ARRAY_SIZE(mop500_pins));
295 u8500_i2c0_device.dev.platform_data = &u8500_i2c0_data;
296 ux500_i2c1_device.dev.platform_data = &u8500_i2c1_data;
297 ux500_i2c2_device.dev.platform_data = &u8500_i2c2_data;
298 ux500_i2c3_device.dev.platform_data = &u8500_i2c3_data;
299 ux500_ske_keypad_device.dev.platform_data = &ske_keypad_board;
301 u8500_ssp0_device.dev.platform_data = &ssp0_platform_data;
303 /* Register the active AMBA devices on this board */
304 for (i = 0; i < ARRAY_SIZE(amba_devs); i++)
305 amba_device_register(amba_devs[i], &iomem_resource);
307 platform_add_devices(platform_devs, ARRAY_SIZE(platform_devs));
311 /* If HW is early drop (ED) or V1.0 then use SPI to access AB8500 */
312 if (cpu_is_u8500ed() || cpu_is_u8500v10())
313 spi_register_board_info(ab8500_spi_devices,
314 ARRAY_SIZE(ab8500_spi_devices));
315 else /* If HW is v.1.1 or later use I2C to access AB8500 */
316 platform_device_register(&ab8500_device);
319 MACHINE_START(U8500, "ST-Ericsson MOP500 platform")
320 /* Maintainer: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com> */
321 .boot_params = 0x100,
322 .map_io = u8500_map_io,
323 .init_irq = ux500_init_irq,
324 /* we re-use nomadik timer here */
325 .timer = &ux500_timer,
326 .init_machine = u8500_init_machine,