1/*
2 * linux/arch/arm/mach-omap2/board-apollon.c
3 *
4 * Copyright (C) 2005,2006 Samsung Electronics
5 * Author: Kyungmin Park <kyungmin.park@samsung.com>
6 *
7 * Modified from mach-omap/omap2/board-h4.c
8 *
9 * Code for apollon OMAP2 board. Should work on many OMAP2 systems where
10 * the bootloader passes the board-specific data to the kernel.
11 * Do not put any board specific code to this file; create a new machine
12 * type if you need custom low-level initializations.
13 *
14 * This program is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License version 2 as
16 * published by the Free Software Foundation.
17 */
18
19#include <linux/kernel.h>
20#include <linux/init.h>
21#include <linux/platform_device.h>
22#include <linux/mtd/mtd.h>
23#include <linux/mtd/partitions.h>
24#include <linux/mtd/onenand.h>
25#include <linux/irq.h>
26#include <linux/interrupt.h>
27#include <linux/delay.h>
28
29#include <asm/hardware.h>
30#include <asm/mach-types.h>
31#include <asm/mach/arch.h>
32#include <asm/mach/flash.h>
33
34#include <asm/arch/gpio.h>
35#include <asm/arch/mux.h>
36#include <asm/arch/usb.h>
37#include <asm/arch/board.h>
38#include <asm/arch/common.h>
39#include "prcm-regs.h"
40
41/* LED & Switch macros */
42#define LED0_GPIO13		13
43#define LED1_GPIO14		14
44#define LED2_GPIO15		15
45#define SW_ENTER_GPIO16		16
46#define SW_UP_GPIO17		17
47#define SW_DOWN_GPIO58		58
48
49static struct mtd_partition apollon_partitions[] = {
50	{
51		.name		= "X-Loader + U-Boot",
52		.offset		= 0,
53		.size		= SZ_128K,
54		.mask_flags	= MTD_WRITEABLE,
55	},
56	{
57		.name		= "params",
58		.offset		= MTDPART_OFS_APPEND,
59		.size		= SZ_128K,
60	},
61	{
62		.name		= "kernel",
63		.offset		= MTDPART_OFS_APPEND,
64		.size		= SZ_2M,
65	},
66	{
67		.name		= "rootfs",
68		.offset		= MTDPART_OFS_APPEND,
69		.size		= SZ_16M,
70	},
71	{
72		.name		= "filesystem00",
73		.offset		= MTDPART_OFS_APPEND,
74		.size		= SZ_32M,
75	},
76	{
77		.name		= "filesystem01",
78		.offset		= MTDPART_OFS_APPEND,
79		.size		= MTDPART_SIZ_FULL,
80	},
81};
82
83static struct flash_platform_data apollon_flash_data = {
84	.parts		= apollon_partitions,
85	.nr_parts	= ARRAY_SIZE(apollon_partitions),
86};
87
88static struct resource apollon_flash_resource = {
89	.start		= APOLLON_CS0_BASE,
90	.end		= APOLLON_CS0_BASE + SZ_128K,
91	.flags		= IORESOURCE_MEM,
92};
93
94static struct platform_device apollon_onenand_device = {
95	.name		= "onenand",
96	.id		= -1,
97	.dev		= {
98		.platform_data	= &apollon_flash_data,
99	},
100	.num_resources	= ARRAY_SIZE(&apollon_flash_resource),
101	.resource	= &apollon_flash_resource,
102};
103
104static struct resource apollon_smc91x_resources[] = {
105	[0] = {
106		.start	= APOLLON_ETHR_START,		/* Physical */
107		.end	= APOLLON_ETHR_START + 0xf,
108		.flags  = IORESOURCE_MEM,
109	},
110	[1] = {
111		.start	= OMAP_GPIO_IRQ(APOLLON_ETHR_GPIO_IRQ),
112		.end	= OMAP_GPIO_IRQ(APOLLON_ETHR_GPIO_IRQ),
113		.flags	= IORESOURCE_IRQ,
114	},
115};
116
117static struct platform_device apollon_smc91x_device = {
118	.name		= "smc91x",
119	.id		= -1,
120	.num_resources	= ARRAY_SIZE(apollon_smc91x_resources),
121	.resource	= apollon_smc91x_resources,
122};
123
124static struct platform_device apollon_lcd_device = {
125	.name		= "apollon_lcd",
126	.id		= -1,
127};
128
129static struct platform_device *apollon_devices[] __initdata = {
130	&apollon_onenand_device,
131	&apollon_smc91x_device,
132	&apollon_lcd_device,
133};
134
135static inline void __init apollon_init_smc91x(void)
136{
137	/* Make sure CS1 timings are correct */
138	GPMC_CONFIG1_1 = 0x00011203;
139	GPMC_CONFIG2_1 = 0x001f1f01;
140	GPMC_CONFIG3_1 = 0x00080803;
141	GPMC_CONFIG4_1 = 0x1c091c09;
142	GPMC_CONFIG5_1 = 0x041f1f1f;
143	GPMC_CONFIG6_1 = 0x000004c4;
144	GPMC_CONFIG7_1 = 0x00000f40 | (APOLLON_CS1_BASE >> 24);
145	udelay(100);
146
147	omap_cfg_reg(W4__24XX_GPIO74);
148	if (omap_request_gpio(APOLLON_ETHR_GPIO_IRQ) < 0) {
149		printk(KERN_ERR "Failed to request GPIO%d for smc91x IRQ\n",
150			APOLLON_ETHR_GPIO_IRQ);
151		return;
152	}
153	omap_set_gpio_direction(APOLLON_ETHR_GPIO_IRQ, 1);
154}
155
156static void __init omap_apollon_init_irq(void)
157{
158	omap2_init_common_hw();
159	omap_init_irq();
160	omap_gpio_init();
161	apollon_init_smc91x();
162}
163
164static struct omap_uart_config apollon_uart_config __initdata = {
165	.enabled_uarts = (1 << 0) | (0 << 1) | (0 << 2),
166};
167
168static struct omap_mmc_config apollon_mmc_config __initdata = {
169	.mmc [0] = {
170		.enabled 	= 1,
171		.wire4		= 1,
172		.wp_pin		= -1,
173		.power_pin	= -1,
174		.switch_pin	= -1,
175	},
176};
177
178static struct omap_lcd_config apollon_lcd_config __initdata = {
179	.ctrl_name	= "internal",
180};
181
182static struct omap_board_config_kernel apollon_config[] = {
183	{ OMAP_TAG_UART,	&apollon_uart_config },
184	{ OMAP_TAG_MMC,		&apollon_mmc_config },
185	{ OMAP_TAG_LCD,		&apollon_lcd_config },
186};
187
188static void __init apollon_led_init(void)
189{
190	/* LED0 - AA10 */
191	omap_cfg_reg(AA10_242X_GPIO13);
192	omap_request_gpio(LED0_GPIO13);
193	omap_set_gpio_direction(LED0_GPIO13, 0);
194	omap_set_gpio_dataout(LED0_GPIO13, 0);
195	/* LED1  - AA6 */
196	omap_cfg_reg(AA6_242X_GPIO14);
197	omap_request_gpio(LED1_GPIO14);
198	omap_set_gpio_direction(LED1_GPIO14, 0);
199	omap_set_gpio_dataout(LED1_GPIO14, 0);
200	/* LED2  - AA4 */
201	omap_cfg_reg(AA4_242X_GPIO15);
202	omap_request_gpio(LED2_GPIO15);
203	omap_set_gpio_direction(LED2_GPIO15, 0);
204	omap_set_gpio_dataout(LED2_GPIO15, 0);
205}
206
207static irqreturn_t apollon_sw_interrupt(int irq, void *ignored)
208{
209	static unsigned int led0, led1, led2;
210
211	if (irq == OMAP_GPIO_IRQ(SW_ENTER_GPIO16))
212		omap_set_gpio_dataout(LED0_GPIO13, led0 ^= 1);
213	else if (irq == OMAP_GPIO_IRQ(SW_UP_GPIO17))
214		omap_set_gpio_dataout(LED1_GPIO14, led1 ^= 1);
215	else if (irq == OMAP_GPIO_IRQ(SW_DOWN_GPIO58))
216		omap_set_gpio_dataout(LED2_GPIO15, led2 ^= 1);
217
218	return IRQ_HANDLED;
219}
220
221static void __init apollon_sw_init(void)
222{
223	/* Enter SW - Y11 */
224	omap_cfg_reg(Y11_242X_GPIO16);
225	omap_request_gpio(SW_ENTER_GPIO16);
226	omap_set_gpio_direction(SW_ENTER_GPIO16, 1);
227	/* Up SW - AA12 */
228	omap_cfg_reg(AA12_242X_GPIO17);
229	omap_request_gpio(SW_UP_GPIO17);
230	omap_set_gpio_direction(SW_UP_GPIO17, 1);
231	/* Down SW - AA8 */
232	omap_cfg_reg(AA8_242X_GPIO58);
233	omap_request_gpio(SW_DOWN_GPIO58);
234	omap_set_gpio_direction(SW_DOWN_GPIO58, 1);
235
236	set_irq_type(OMAP_GPIO_IRQ(SW_ENTER_GPIO16), IRQT_RISING);
237	if (request_irq(OMAP_GPIO_IRQ(SW_ENTER_GPIO16), &apollon_sw_interrupt,
238				IRQF_SHARED, "enter sw",
239				&apollon_sw_interrupt))
240		return;
241	set_irq_type(OMAP_GPIO_IRQ(SW_UP_GPIO17), IRQT_RISING);
242	if (request_irq(OMAP_GPIO_IRQ(SW_UP_GPIO17), &apollon_sw_interrupt,
243				IRQF_SHARED, "up sw",
244				&apollon_sw_interrupt))
245		return;
246	set_irq_type(OMAP_GPIO_IRQ(SW_DOWN_GPIO58), IRQT_RISING);
247	if (request_irq(OMAP_GPIO_IRQ(SW_DOWN_GPIO58), &apollon_sw_interrupt,
248				IRQF_SHARED, "down sw",
249				&apollon_sw_interrupt))
250		return;
251}
252
253static void __init omap_apollon_init(void)
254{
255	apollon_led_init();
256	apollon_sw_init();
257
258	/* REVISIT: where's the correct place */
259	omap_cfg_reg(W19_24XX_SYS_NIRQ);
260
261	/* Use Interal loop-back in MMC/SDIO Module Input Clock selection */
262	CONTROL_DEVCONF |= (1 << 24);
263
264	/*
265 	 * Make sure the serial ports are muxed on at this point.
266	 * You have to mux them off in device drivers later on
267	 * if not needed.
268	 */
269	platform_add_devices(apollon_devices, ARRAY_SIZE(apollon_devices));
270	omap_board_config = apollon_config;
271	omap_board_config_size = ARRAY_SIZE(apollon_config);
272	omap_serial_init();
273}
274
275static void __init omap_apollon_map_io(void)
276{
277	omap2_map_common_io();
278}
279
280MACHINE_START(OMAP_APOLLON, "OMAP24xx Apollon")
281	/* Maintainer: Kyungmin Park <kyungmin.park@samsung.com> */
282	.phys_io	= 0x48000000,
283	.io_pg_offst	= ((0xd8000000) >> 18) & 0xfffc,
284	.boot_params	= 0x80000100,
285	.map_io		= omap_apollon_map_io,
286	.init_irq	= omap_apollon_init_irq,
287	.init_machine	= omap_apollon_init,
288	.timer		= &omap_timer,
289MACHINE_END
290