Merge branch 'topic/sc6000' into for-linus
[linux-2.6] / arch / arm / mach-omap2 / board-omap3beagle.c
1 /*
2  * linux/arch/arm/mach-omap2/board-omap3beagle.c
3  *
4  * Copyright (C) 2008 Texas Instruments
5  *
6  * Modified from mach-omap2/board-3430sdp.c
7  *
8  * Initial code: Syed Mohammed Khasim
9  *
10  * This program is free software; you can redistribute it and/or modify
11  * it under the terms of the GNU General Public License version 2 as
12  * published by the Free Software Foundation.
13  */
14
15 #include <linux/kernel.h>
16 #include <linux/init.h>
17 #include <linux/platform_device.h>
18 #include <linux/delay.h>
19 #include <linux/err.h>
20 #include <linux/clk.h>
21 #include <linux/io.h>
22 #include <linux/leds.h>
23 #include <linux/gpio.h>
24 #include <linux/input.h>
25 #include <linux/gpio_keys.h>
26
27 #include <linux/mtd/mtd.h>
28 #include <linux/mtd/partitions.h>
29 #include <linux/mtd/nand.h>
30
31 #include <linux/i2c/twl4030.h>
32
33 #include <mach/hardware.h>
34 #include <asm/mach-types.h>
35 #include <asm/mach/arch.h>
36 #include <asm/mach/map.h>
37 #include <asm/mach/flash.h>
38
39 #include <mach/board.h>
40 #include <mach/common.h>
41 #include <mach/gpmc.h>
42 #include <mach/nand.h>
43 #include <mach/mux.h>
44 #include <mach/usb.h>
45 #include <mach/timer-gp.h>
46
47 #include "mmc-twl4030.h"
48
49 #define GPMC_CS0_BASE  0x60
50 #define GPMC_CS_SIZE   0x30
51
52 #define NAND_BLOCK_SIZE         SZ_128K
53
54 static struct mtd_partition omap3beagle_nand_partitions[] = {
55         /* All the partition sizes are listed in terms of NAND block size */
56         {
57                 .name           = "X-Loader",
58                 .offset         = 0,
59                 .size           = 4 * NAND_BLOCK_SIZE,
60                 .mask_flags     = MTD_WRITEABLE,        /* force read-only */
61         },
62         {
63                 .name           = "U-Boot",
64                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x80000 */
65                 .size           = 15 * NAND_BLOCK_SIZE,
66                 .mask_flags     = MTD_WRITEABLE,        /* force read-only */
67         },
68         {
69                 .name           = "U-Boot Env",
70                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x260000 */
71                 .size           = 1 * NAND_BLOCK_SIZE,
72         },
73         {
74                 .name           = "Kernel",
75                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x280000 */
76                 .size           = 32 * NAND_BLOCK_SIZE,
77         },
78         {
79                 .name           = "File System",
80                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x680000 */
81                 .size           = MTDPART_SIZ_FULL,
82         },
83 };
84
85 static struct omap_nand_platform_data omap3beagle_nand_data = {
86         .options        = NAND_BUSWIDTH_16,
87         .parts          = omap3beagle_nand_partitions,
88         .nr_parts       = ARRAY_SIZE(omap3beagle_nand_partitions),
89         .dma_channel    = -1,           /* disable DMA in OMAP NAND driver */
90         .nand_setup     = NULL,
91         .dev_ready      = NULL,
92 };
93
94 static struct resource omap3beagle_nand_resource = {
95         .flags          = IORESOURCE_MEM,
96 };
97
98 static struct platform_device omap3beagle_nand_device = {
99         .name           = "omap2-nand",
100         .id             = -1,
101         .dev            = {
102                 .platform_data  = &omap3beagle_nand_data,
103         },
104         .num_resources  = 1,
105         .resource       = &omap3beagle_nand_resource,
106 };
107
108 static struct omap_uart_config omap3_beagle_uart_config __initdata = {
109         .enabled_uarts  = ((1 << 0) | (1 << 1) | (1 << 2)),
110 };
111
112 static struct twl4030_hsmmc_info mmc[] = {
113         {
114                 .mmc            = 1,
115                 .wires          = 8,
116                 .gpio_wp        = 29,
117         },
118         {}      /* Terminator */
119 };
120
121 static struct gpio_led gpio_leds[];
122
123 static int beagle_twl_gpio_setup(struct device *dev,
124                 unsigned gpio, unsigned ngpio)
125 {
126         /* gpio + 0 is "mmc0_cd" (input/IRQ) */
127         omap_cfg_reg(AH8_34XX_GPIO29);
128         mmc[0].gpio_cd = gpio + 0;
129         twl4030_mmc_init(mmc);
130
131         /* REVISIT: need ehci-omap hooks for external VBUS
132          * power switch and overcurrent detect
133          */
134
135         gpio_request(gpio + 1, "EHCI_nOC");
136         gpio_direction_input(gpio + 1);
137
138         /* TWL4030_GPIO_MAX + 0 == ledA, EHCI nEN_USB_PWR (out, active low) */
139         gpio_request(gpio + TWL4030_GPIO_MAX, "nEN_USB_PWR");
140         gpio_direction_output(gpio + TWL4030_GPIO_MAX, 1);
141
142         /* TWL4030_GPIO_MAX + 1 == ledB, PMU_STAT (out, active low LED) */
143         gpio_leds[2].gpio = gpio + TWL4030_GPIO_MAX + 1;
144
145         return 0;
146 }
147
148 static struct twl4030_gpio_platform_data beagle_gpio_data = {
149         .gpio_base      = OMAP_MAX_GPIO_LINES,
150         .irq_base       = TWL4030_GPIO_IRQ_BASE,
151         .irq_end        = TWL4030_GPIO_IRQ_END,
152         .use_leds       = true,
153         .pullups        = BIT(1),
154         .pulldowns      = BIT(2) | BIT(6) | BIT(7) | BIT(8) | BIT(13)
155                                 | BIT(15) | BIT(16) | BIT(17),
156         .setup          = beagle_twl_gpio_setup,
157 };
158
159 static struct twl4030_platform_data beagle_twldata = {
160         .irq_base       = TWL4030_IRQ_BASE,
161         .irq_end        = TWL4030_IRQ_END,
162
163         /* platform_data for children goes here */
164         .gpio           = &beagle_gpio_data,
165 };
166
167 static struct i2c_board_info __initdata beagle_i2c_boardinfo[] = {
168         {
169                 I2C_BOARD_INFO("twl4030", 0x48),
170                 .flags = I2C_CLIENT_WAKE,
171                 .irq = INT_34XX_SYS_NIRQ,
172                 .platform_data = &beagle_twldata,
173         },
174 };
175
176 static int __init omap3_beagle_i2c_init(void)
177 {
178         omap_register_i2c_bus(1, 2600, beagle_i2c_boardinfo,
179                         ARRAY_SIZE(beagle_i2c_boardinfo));
180         /* Bus 3 is attached to the DVI port where devices like the pico DLP
181          * projector don't work reliably with 400kHz */
182         omap_register_i2c_bus(3, 100, NULL, 0);
183         return 0;
184 }
185
186 static void __init omap3_beagle_init_irq(void)
187 {
188         omap2_init_common_hw(NULL);
189         omap_init_irq();
190 #ifdef CONFIG_OMAP_32K_TIMER
191         omap2_gp_clockevent_set_gptimer(12);
192 #endif
193         omap_gpio_init();
194 }
195
196 static struct platform_device omap3_beagle_lcd_device = {
197         .name           = "omap3beagle_lcd",
198         .id             = -1,
199 };
200
201 static struct omap_lcd_config omap3_beagle_lcd_config __initdata = {
202         .ctrl_name      = "internal",
203 };
204
205 static struct gpio_led gpio_leds[] = {
206         {
207                 .name                   = "beagleboard::usr0",
208                 .default_trigger        = "heartbeat",
209                 .gpio                   = 150,
210         },
211         {
212                 .name                   = "beagleboard::usr1",
213                 .default_trigger        = "mmc0",
214                 .gpio                   = 149,
215         },
216         {
217                 .name                   = "beagleboard::pmu_stat",
218                 .gpio                   = -EINVAL,      /* gets replaced */
219                 .active_low             = true,
220         },
221 };
222
223 static struct gpio_led_platform_data gpio_led_info = {
224         .leds           = gpio_leds,
225         .num_leds       = ARRAY_SIZE(gpio_leds),
226 };
227
228 static struct platform_device leds_gpio = {
229         .name   = "leds-gpio",
230         .id     = -1,
231         .dev    = {
232                 .platform_data  = &gpio_led_info,
233         },
234 };
235
236 static struct gpio_keys_button gpio_buttons[] = {
237         {
238                 .code                   = BTN_EXTRA,
239                 .gpio                   = 7,
240                 .desc                   = "user",
241                 .wakeup                 = 1,
242         },
243 };
244
245 static struct gpio_keys_platform_data gpio_key_info = {
246         .buttons        = gpio_buttons,
247         .nbuttons       = ARRAY_SIZE(gpio_buttons),
248 };
249
250 static struct platform_device keys_gpio = {
251         .name   = "gpio-keys",
252         .id     = -1,
253         .dev    = {
254                 .platform_data  = &gpio_key_info,
255         },
256 };
257
258 static struct omap_board_config_kernel omap3_beagle_config[] __initdata = {
259         { OMAP_TAG_UART,        &omap3_beagle_uart_config },
260         { OMAP_TAG_LCD,         &omap3_beagle_lcd_config },
261 };
262
263 static struct platform_device *omap3_beagle_devices[] __initdata = {
264         &omap3_beagle_lcd_device,
265         &leds_gpio,
266         &keys_gpio,
267 };
268
269 static void __init omap3beagle_flash_init(void)
270 {
271         u8 cs = 0;
272         u8 nandcs = GPMC_CS_NUM + 1;
273
274         u32 gpmc_base_add = OMAP34XX_GPMC_VIRT;
275
276         /* find out the chip-select on which NAND exists */
277         while (cs < GPMC_CS_NUM) {
278                 u32 ret = 0;
279                 ret = gpmc_cs_read_reg(cs, GPMC_CS_CONFIG1);
280
281                 if ((ret & 0xC00) == 0x800) {
282                         printk(KERN_INFO "Found NAND on CS%d\n", cs);
283                         if (nandcs > GPMC_CS_NUM)
284                                 nandcs = cs;
285                 }
286                 cs++;
287         }
288
289         if (nandcs > GPMC_CS_NUM) {
290                 printk(KERN_INFO "NAND: Unable to find configuration "
291                                  "in GPMC\n ");
292                 return;
293         }
294
295         if (nandcs < GPMC_CS_NUM) {
296                 omap3beagle_nand_data.cs = nandcs;
297                 omap3beagle_nand_data.gpmc_cs_baseaddr = (void *)
298                         (gpmc_base_add + GPMC_CS0_BASE + nandcs * GPMC_CS_SIZE);
299                 omap3beagle_nand_data.gpmc_baseaddr = (void *) (gpmc_base_add);
300
301                 printk(KERN_INFO "Registering NAND on CS%d\n", nandcs);
302                 if (platform_device_register(&omap3beagle_nand_device) < 0)
303                         printk(KERN_ERR "Unable to register NAND device\n");
304         }
305 }
306
307 static void __init omap3_beagle_init(void)
308 {
309         omap3_beagle_i2c_init();
310         platform_add_devices(omap3_beagle_devices,
311                         ARRAY_SIZE(omap3_beagle_devices));
312         omap_board_config = omap3_beagle_config;
313         omap_board_config_size = ARRAY_SIZE(omap3_beagle_config);
314         omap_serial_init();
315
316         omap_cfg_reg(J25_34XX_GPIO170);
317         gpio_request(170, "DVI_nPD");
318         /* REVISIT leave DVI powered down until it's needed ... */
319         gpio_direction_output(170, true);
320
321         usb_musb_init();
322         omap3beagle_flash_init();
323 }
324
325 static void __init omap3_beagle_map_io(void)
326 {
327         omap2_set_globals_343x();
328         omap2_map_common_io();
329 }
330
331 MACHINE_START(OMAP3_BEAGLE, "OMAP3 Beagle Board")
332         /* Maintainer: Syed Mohammed Khasim - http://beagleboard.org */
333         .phys_io        = 0x48000000,
334         .io_pg_offst    = ((0xd8000000) >> 18) & 0xfffc,
335         .boot_params    = 0x80000100,
336         .map_io         = omap3_beagle_map_io,
337         .init_irq       = omap3_beagle_init_irq,
338         .init_machine   = omap3_beagle_init,
339         .timer          = &omap_timer,
340 MACHINE_END