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/keypad.h>
39 #include <mach/gpmc.h>
40 #include <mach/nand.h>
41 #include <mach/mcspi.h>
44 #include "mmc-twl4030.h"
47 #define GPMC_OFF_CONFIG1_0 0x60
49 static struct mtd_partition omap2evm_nand_partitions[] = {
53 .size = 1 * (64 * 2048),
54 .mask_flags = MTD_WRITEABLE, /* force read-only */
58 .offset = MTDPART_OFS_APPEND,
59 .size = 3 * (64 * 2048),
60 .mask_flags = MTD_WRITEABLE, /* force read-only */
63 .name = "U-Boot Environment",
64 .offset = MTDPART_OFS_APPEND,
65 .size = 1 * (64 * 2048),
69 .offset = MTDPART_OFS_APPEND,
70 .size = 16 * (64 * 2048), /* 2MB */
74 .offset = MTDPART_OFS_APPEND,
75 .size = 32 * (64 * 2048), /* 4MB */
79 .offset = MTDPART_OFS_APPEND,
80 .size = MTDPART_SIZ_FULL,
84 static struct omap_nand_platform_data omap2evm_nand_data = {
85 .parts = omap2evm_nand_partitions,
86 .nr_parts = ARRAY_SIZE(omap2evm_nand_partitions),
87 .dma_channel = -1, /* disable DMA in OMAP NAND driver */
90 static struct resource omap2evm_nand_resource = {
91 .flags = IORESOURCE_MEM,
94 static struct platform_device omap2evm_nand_device = {
98 .platform_data = &omap2evm_nand_data,
101 .resource = &omap2evm_nand_resource,
104 void __init omap2evm_flash_init(void)
106 void __iomem *gpmc_base_add, *gpmc_cs_base_add;
107 unsigned char cs = 0;
109 gpmc_base_add = (__force void __iomem *)OMAP243X_GPMC_VIRT;
110 while (cs < GPMC_CS_NUM) {
113 /* Each GPMC set for a single CS is at offset 0x30 */
114 gpmc_cs_base_add = (gpmc_base_add + GPMC_OFF_CONFIG1_0 +
117 /* xloader/Uboot would have programmed the NAND
118 * base address for us This is a ugly hack. The proper
119 * way of doing this is to pass the setup of u-boot up
120 * to kernel using kernel params - something on the
121 * lines of machineID. Check if Nand is
123 ret = __raw_readl(gpmc_cs_base_add + GPMC_CS_CONFIG1);
124 if ((ret & 0xC00) == (0x800)) {
126 printk(KERN_INFO "NAND: Found NAND on CS %d \n", cs);
131 if (cs >= GPMC_CS_NUM) {
132 printk(KERN_INFO "MTD: Unable to find MTD configuration in "
133 "GPMC - not registering.\n");
137 omap2evm_nand_data.cs = cs;
138 omap2evm_nand_data.gpmc_cs_baseaddr = gpmc_cs_base_add;
139 omap2evm_nand_data.gpmc_baseaddr = gpmc_base_add;
141 if (platform_device_register(&omap2evm_nand_device) < 0) {
142 printk(KERN_ERR "Unable to register NAND device\n");
147 static struct resource omap2evm_smc911x_resources[] = {
149 .start = OMAP2EVM_ETHR_START,
150 .end = (OMAP2EVM_ETHR_START + OMAP2EVM_ETHR_SIZE - 1),
151 .flags = IORESOURCE_MEM,
154 .start = OMAP_GPIO_IRQ(OMAP2EVM_ETHR_GPIO_IRQ),
155 .end = OMAP_GPIO_IRQ(OMAP2EVM_ETHR_GPIO_IRQ),
156 .flags = IORESOURCE_IRQ,
160 static struct platform_device omap2evm_smc911x_device = {
163 .num_resources = ARRAY_SIZE(omap2evm_smc911x_resources),
164 .resource = &omap2evm_smc911x_resources [0],
167 static inline void __init omap2evm_init_smc911x(void)
169 int gpio = OMAP2EVM_ETHR_GPIO_IRQ;
172 ret = gpio_request(gpio, "smc911x IRQ");
174 printk(KERN_ERR "Failed to request GPIO %d for smc911x IRQ\n",
178 gpio_direction_input(gpio);
182 static struct platform_device omap2_evm_lcd_device = {
183 .name = "omap2evm_lcd",
187 static struct omap_lcd_config omap2_evm_lcd_config __initdata = {
188 .ctrl_name = "internal",
191 static void ads7846_dev_init(void)
193 int gpio = OMAP2_EVM_TS_GPIO;
196 ret = gpio_request(gpio, "ads7846_pen_down");
198 printk(KERN_ERR "Failed to request GPIO %d for ads7846 pen down IRQ\n",
203 gpio_direction_input(gpio);
206 omap_cfg_reg(Y18_2430_MCSPI1_CLK);
207 omap_cfg_reg(AD15_2430_MCSPI1_SIMO);
208 omap_cfg_reg(AE17_2430_MCSPI1_SOMI);
209 omap_cfg_reg(U1_2430_MCSPI1_CS0);
211 omap_cfg_reg(AF19_2430_GPIO_85);
215 static int ads7846_get_pendown_state(void)
217 return !gpio_get_value(OMAP2_EVM_TS_GPIO);
220 struct ads7846_platform_data ads7846_config = {
228 .get_pendown_state = ads7846_get_pendown_state,
230 .settle_delay_usecs = 150,
233 static struct omap2_mcspi_device_config ads7846_mcspi_config = {
235 .single_channel = 1, /* 0: slave, 1: master */
238 struct spi_board_info omap2evm_spi_board_info[] = {
240 .modalias = "ads7846",
243 .max_speed_hz = 1500000,
244 .controller_data = &ads7846_mcspi_config,
245 .irq = OMAP_GPIO_IRQ(OMAP2_EVM_TS_GPIO),
246 .platform_data = &ads7846_config,
251 static int omap2evm_keymap[] = {
253 KEY(0, 1, KEY_RIGHT),
260 KEY(2, 0, KEY_ENTER),
270 static struct twl4030_keypad_data omap2evm_kp_data = {
273 .keymap = omap2evm_keymap,
274 .keymapsize = ARRAY_SIZE(omap2evm_keymap),
278 static void __init omap2_evm_init_irq(void)
280 omap2_init_common_hw(NULL);
283 omap2evm_init_smc911x();
286 static struct omap_uart_config omap2_evm_uart_config __initdata = {
287 .enabled_uarts = ((1 << 0) | (1 << 1) | (1 << 2)),
290 static struct omap_board_config_kernel omap2_evm_config[] __initdata = {
291 { OMAP_TAG_UART, &omap2_evm_uart_config },
292 { OMAP_TAG_LCD, &omap2_evm_lcd_config },
295 static struct twl4030_gpio_platform_data omap2evm_gpio_data = {
296 .gpio_base = OMAP_MAX_GPIO_LINES,
297 .irq_base = TWL4030_GPIO_IRQ_BASE,
298 .irq_end = TWL4030_GPIO_IRQ_END,
301 static struct twl4030_usb_data omap2evm_usb_data = {
302 .usb_mode = T2_USB_MODE_ULPI,
305 static struct twl4030_madc_platform_data omap2evm_madc_data = {
309 static struct twl4030_platform_data omap2evm_twldata = {
310 .irq_base = TWL4030_IRQ_BASE,
311 .irq_end = TWL4030_IRQ_END,
313 /* platform_data for children goes here */
314 .keypad = &omap2evm_kp_data,
315 .madc = &omap2evm_madc_data,
316 .usb = &omap2evm_usb_data,
317 .gpio = &omap2evm_gpio_data,
320 static struct i2c_board_info __initdata omap2evm_i2c_boardinfo[] = {
322 I2C_BOARD_INFO("twl4030", 0x48),
323 .flags = I2C_CLIENT_WAKE,
324 .irq = INT_24XX_SYS_NIRQ,
325 .platform_data = &omap2evm_twldata,
329 static int __init omap2_evm_i2c_init(void)
331 omap_register_i2c_bus(1, 400, NULL, 0);
332 omap_register_i2c_bus(2, 2600, omap2evm_i2c_boardinfo,
333 ARRAY_SIZE(omap2evm_i2c_boardinfo));
337 static struct platform_device *omap2_evm_devices[] __initdata = {
338 &omap2_evm_lcd_device,
339 &omap2evm_smc911x_device,
342 static struct twl4030_hsmmc_info mmc[] __initdata = {
352 static void __init omap2_evm_init(void)
354 omap2_evm_i2c_init();
356 platform_add_devices(omap2_evm_devices, ARRAY_SIZE(omap2_evm_devices));
357 omap_board_config = omap2_evm_config;
358 omap_board_config_size = ARRAY_SIZE(omap2_evm_config);
359 spi_register_board_info(omap2evm_spi_board_info,
360 ARRAY_SIZE(omap2evm_spi_board_info));
362 twl4030_mmc_init(mmc);
363 omap2evm_flash_init();
367 static void __init omap2_evm_map_io(void)
369 omap2_set_globals_243x();
370 omap2_map_common_io();
373 MACHINE_START(OMAP2EVM, "OMAP2EVM Board")
374 /* Maintainer: Arun KS <arunks@mistralsolutions.com> */
375 .phys_io = 0x48000000,
376 .io_pg_offst = ((0xd8000000) >> 18) & 0xfffc,
377 .boot_params = 0x80000100,
378 .map_io = omap2_evm_map_io,
379 .init_irq = omap2_evm_init_irq,
380 .init_machine = omap2_evm_init,
381 .timer = &omap_timer,