2 * linux/arch/arm/mach-omap2/board-omap2evm.c
4 * Copyright (C) 2008 Mistral Solutions Pvt Ltd
6 * Modified from mach-omap2/board-generic.c
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
13 #include <linux/kernel.h>
14 #include <linux/init.h>
15 #include <linux/platform_device.h>
16 #include <linux/delay.h>
17 #include <linux/err.h>
18 #include <linux/clk.h>
20 #include <linux/input.h>
21 #include <linux/i2c/twl4030.h>
22 #include <linux/mtd/mtd.h>
23 #include <linux/mtd/partitions.h>
24 #include <linux/mtd/nand.h>
25 #include <linux/spi/spi.h>
26 #include <linux/spi/ads7846.h>
28 #include <mach/hardware.h>
29 #include <asm/mach-types.h>
30 #include <asm/mach/arch.h>
31 #include <asm/mach/map.h>
32 #include <asm/mach/flash.h>
34 #include <mach/gpio.h>
35 #include <mach/board.h>
36 #include <mach/common.h>
38 #include <mach/gpmc.h>
39 #include <mach/nand.h>
40 #include <mach/mcspi.h>
43 #include "mmc-twl4030.h"
45 #define OMAP2EVM_ETHR_START 0x2c000000
46 #define OMAP2EVM_ETHR_SIZE 1024
47 #define OMAP2EVM_ETHR_GPIO_IRQ 149
48 #define OMAP2_EVM_TS_GPIO 85
50 #define GPMC_OFF_CONFIG1_0 0x60
52 static struct mtd_partition omap2evm_nand_partitions[] = {
56 .size = 1 * (64 * 2048),
57 .mask_flags = MTD_WRITEABLE, /* force read-only */
61 .offset = MTDPART_OFS_APPEND,
62 .size = 3 * (64 * 2048),
63 .mask_flags = MTD_WRITEABLE, /* force read-only */
66 .name = "U-Boot Environment",
67 .offset = MTDPART_OFS_APPEND,
68 .size = 1 * (64 * 2048),
72 .offset = MTDPART_OFS_APPEND,
73 .size = 16 * (64 * 2048), /* 2MB */
77 .offset = MTDPART_OFS_APPEND,
78 .size = 32 * (64 * 2048), /* 4MB */
82 .offset = MTDPART_OFS_APPEND,
83 .size = MTDPART_SIZ_FULL,
87 static struct omap_nand_platform_data omap2evm_nand_data = {
88 .parts = omap2evm_nand_partitions,
89 .nr_parts = ARRAY_SIZE(omap2evm_nand_partitions),
90 .dma_channel = -1, /* disable DMA in OMAP NAND driver */
93 static struct resource omap2evm_nand_resource = {
94 .flags = IORESOURCE_MEM,
97 static struct platform_device omap2evm_nand_device = {
101 .platform_data = &omap2evm_nand_data,
104 .resource = &omap2evm_nand_resource,
107 void __init omap2evm_flash_init(void)
109 void __iomem *gpmc_base_add, *gpmc_cs_base_add;
110 unsigned char cs = 0;
112 gpmc_base_add = (__force void __iomem *)OMAP243X_GPMC_VIRT;
113 while (cs < GPMC_CS_NUM) {
116 /* Each GPMC set for a single CS is at offset 0x30 */
117 gpmc_cs_base_add = (gpmc_base_add + GPMC_OFF_CONFIG1_0 +
120 /* xloader/Uboot would have programmed the NAND
121 * base address for us This is a ugly hack. The proper
122 * way of doing this is to pass the setup of u-boot up
123 * to kernel using kernel params - something on the
124 * lines of machineID. Check if Nand is
126 ret = __raw_readl(gpmc_cs_base_add + GPMC_CS_CONFIG1);
127 if ((ret & 0xC00) == (0x800)) {
129 printk(KERN_INFO "NAND: Found NAND on CS %d \n", cs);
134 if (cs >= GPMC_CS_NUM) {
135 printk(KERN_INFO "MTD: Unable to find MTD configuration in "
136 "GPMC - not registering.\n");
140 omap2evm_nand_data.cs = cs;
141 omap2evm_nand_data.gpmc_cs_baseaddr = gpmc_cs_base_add;
142 omap2evm_nand_data.gpmc_baseaddr = gpmc_base_add;
144 if (platform_device_register(&omap2evm_nand_device) < 0) {
145 printk(KERN_ERR "Unable to register NAND device\n");
150 static struct resource omap2evm_smc911x_resources[] = {
152 .start = OMAP2EVM_ETHR_START,
153 .end = (OMAP2EVM_ETHR_START + OMAP2EVM_ETHR_SIZE - 1),
154 .flags = IORESOURCE_MEM,
157 .start = OMAP_GPIO_IRQ(OMAP2EVM_ETHR_GPIO_IRQ),
158 .end = OMAP_GPIO_IRQ(OMAP2EVM_ETHR_GPIO_IRQ),
159 .flags = IORESOURCE_IRQ,
163 static struct platform_device omap2evm_smc911x_device = {
166 .num_resources = ARRAY_SIZE(omap2evm_smc911x_resources),
167 .resource = &omap2evm_smc911x_resources [0],
170 static inline void __init omap2evm_init_smc911x(void)
172 int gpio = OMAP2EVM_ETHR_GPIO_IRQ;
175 ret = gpio_request(gpio, "smc911x IRQ");
177 printk(KERN_ERR "Failed to request GPIO %d for smc911x IRQ\n",
181 gpio_direction_input(gpio);
185 static struct platform_device omap2_evm_lcd_device = {
186 .name = "omap2evm_lcd",
190 static struct omap_lcd_config omap2_evm_lcd_config __initdata = {
191 .ctrl_name = "internal",
194 static void ads7846_dev_init(void)
196 int gpio = OMAP2_EVM_TS_GPIO;
199 ret = gpio_request(gpio, "ads7846_pen_down");
201 printk(KERN_ERR "Failed to request GPIO %d for ads7846 pen down IRQ\n",
206 gpio_direction_input(gpio);
209 omap_cfg_reg(Y18_2430_MCSPI1_CLK);
210 omap_cfg_reg(AD15_2430_MCSPI1_SIMO);
211 omap_cfg_reg(AE17_2430_MCSPI1_SOMI);
212 omap_cfg_reg(U1_2430_MCSPI1_CS0);
214 omap_cfg_reg(AF19_2430_GPIO_85);
218 static int ads7846_get_pendown_state(void)
220 return !gpio_get_value(OMAP2_EVM_TS_GPIO);
223 struct ads7846_platform_data ads7846_config = {
231 .get_pendown_state = ads7846_get_pendown_state,
233 .settle_delay_usecs = 150,
236 static struct omap2_mcspi_device_config ads7846_mcspi_config = {
238 .single_channel = 1, /* 0: slave, 1: master */
241 struct spi_board_info omap2evm_spi_board_info[] = {
243 .modalias = "ads7846",
246 .max_speed_hz = 1500000,
247 .controller_data = &ads7846_mcspi_config,
248 .irq = OMAP_GPIO_IRQ(OMAP2_EVM_TS_GPIO),
249 .platform_data = &ads7846_config,
254 static int omap2evm_keymap[] = {
256 KEY(0, 1, KEY_RIGHT),
263 KEY(2, 0, KEY_ENTER),
273 static struct twl4030_keypad_data omap2evm_kp_data = {
276 .keymap = omap2evm_keymap,
277 .keymapsize = ARRAY_SIZE(omap2evm_keymap),
281 static void __init omap2_evm_init_irq(void)
283 omap2_init_common_hw(NULL);
286 omap2evm_init_smc911x();
289 static struct omap_uart_config omap2_evm_uart_config __initdata = {
290 .enabled_uarts = ((1 << 0) | (1 << 1) | (1 << 2)),
293 static struct omap_board_config_kernel omap2_evm_config[] __initdata = {
294 { OMAP_TAG_UART, &omap2_evm_uart_config },
295 { OMAP_TAG_LCD, &omap2_evm_lcd_config },
298 static struct twl4030_gpio_platform_data omap2evm_gpio_data = {
299 .gpio_base = OMAP_MAX_GPIO_LINES,
300 .irq_base = TWL4030_GPIO_IRQ_BASE,
301 .irq_end = TWL4030_GPIO_IRQ_END,
304 static struct twl4030_usb_data omap2evm_usb_data = {
305 .usb_mode = T2_USB_MODE_ULPI,
308 static struct twl4030_madc_platform_data omap2evm_madc_data = {
312 static struct twl4030_platform_data omap2evm_twldata = {
313 .irq_base = TWL4030_IRQ_BASE,
314 .irq_end = TWL4030_IRQ_END,
316 /* platform_data for children goes here */
317 .keypad = &omap2evm_kp_data,
318 .madc = &omap2evm_madc_data,
319 .usb = &omap2evm_usb_data,
320 .gpio = &omap2evm_gpio_data,
323 static struct i2c_board_info __initdata omap2evm_i2c_boardinfo[] = {
325 I2C_BOARD_INFO("twl4030", 0x48),
326 .flags = I2C_CLIENT_WAKE,
327 .irq = INT_24XX_SYS_NIRQ,
328 .platform_data = &omap2evm_twldata,
332 static int __init omap2_evm_i2c_init(void)
334 omap_register_i2c_bus(1, 400, NULL, 0);
335 omap_register_i2c_bus(2, 2600, omap2evm_i2c_boardinfo,
336 ARRAY_SIZE(omap2evm_i2c_boardinfo));
340 static struct platform_device *omap2_evm_devices[] __initdata = {
341 &omap2_evm_lcd_device,
342 &omap2evm_smc911x_device,
345 static struct twl4030_hsmmc_info mmc[] __initdata = {
355 static void __init omap2_evm_init(void)
357 omap2_evm_i2c_init();
359 platform_add_devices(omap2_evm_devices, ARRAY_SIZE(omap2_evm_devices));
360 omap_board_config = omap2_evm_config;
361 omap_board_config_size = ARRAY_SIZE(omap2_evm_config);
362 spi_register_board_info(omap2evm_spi_board_info,
363 ARRAY_SIZE(omap2evm_spi_board_info));
365 twl4030_mmc_init(mmc);
366 omap2evm_flash_init();
370 static void __init omap2_evm_map_io(void)
372 omap2_set_globals_243x();
373 omap2_map_common_io();
376 MACHINE_START(OMAP2EVM, "OMAP2EVM Board")
377 /* Maintainer: Arun KS <arunks@mistralsolutions.com> */
378 .phys_io = 0x48000000,
379 .io_pg_offst = ((0xd8000000) >> 18) & 0xfffc,
380 .boot_params = 0x80000100,
381 .map_io = omap2_evm_map_io,
382 .init_irq = omap2_evm_init_irq,
383 .init_machine = omap2_evm_init,
384 .timer = &omap_timer,