Merge branch 'linux-next' of git://git.infradead.org/~dedekind/ubi-2.6
[linux-2.6] / arch / arm / mach-omap2 / board-apollon.c
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 #include <linux/leds.h>
29 #include <linux/err.h>
30 #include <linux/clk.h>
31
32 #include <mach/hardware.h>
33 #include <asm/mach-types.h>
34 #include <asm/mach/arch.h>
35 #include <asm/mach/flash.h>
36
37 #include <mach/gpio.h>
38 #include <mach/led.h>
39 #include <mach/mux.h>
40 #include <mach/usb.h>
41 #include <mach/board.h>
42 #include <mach/common.h>
43 #include <mach/gpmc.h>
44 #include <mach/control.h>
45
46 /* LED & Switch macros */
47 #define LED0_GPIO13             13
48 #define LED1_GPIO14             14
49 #define LED2_GPIO15             15
50 #define SW_ENTER_GPIO16         16
51 #define SW_UP_GPIO17            17
52 #define SW_DOWN_GPIO58          58
53
54 #define APOLLON_FLASH_CS        0
55 #define APOLLON_ETH_CS          1
56
57 static struct mtd_partition apollon_partitions[] = {
58         {
59                 .name           = "X-Loader + U-Boot",
60                 .offset         = 0,
61                 .size           = SZ_128K,
62                 .mask_flags     = MTD_WRITEABLE,
63         },
64         {
65                 .name           = "params",
66                 .offset         = MTDPART_OFS_APPEND,
67                 .size           = SZ_128K,
68         },
69         {
70                 .name           = "kernel",
71                 .offset         = MTDPART_OFS_APPEND,
72                 .size           = SZ_2M,
73         },
74         {
75                 .name           = "rootfs",
76                 .offset         = MTDPART_OFS_APPEND,
77                 .size           = SZ_16M,
78         },
79         {
80                 .name           = "filesystem00",
81                 .offset         = MTDPART_OFS_APPEND,
82                 .size           = SZ_32M,
83         },
84         {
85                 .name           = "filesystem01",
86                 .offset         = MTDPART_OFS_APPEND,
87                 .size           = MTDPART_SIZ_FULL,
88         },
89 };
90
91 static struct flash_platform_data apollon_flash_data = {
92         .parts          = apollon_partitions,
93         .nr_parts       = ARRAY_SIZE(apollon_partitions),
94 };
95
96 static struct resource apollon_flash_resource[] = {
97         [0] = {
98                 .flags          = IORESOURCE_MEM,
99         },
100 };
101
102 static struct platform_device apollon_onenand_device = {
103         .name           = "onenand",
104         .id             = -1,
105         .dev            = {
106                 .platform_data  = &apollon_flash_data,
107         },
108         .num_resources  = ARRAY_SIZE(apollon_flash_resource),
109         .resource       = apollon_flash_resource,
110 };
111
112 static void __init apollon_flash_init(void)
113 {
114         unsigned long base;
115
116         if (gpmc_cs_request(APOLLON_FLASH_CS, SZ_128K, &base) < 0) {
117                 printk(KERN_ERR "Cannot request OneNAND GPMC CS\n");
118                 return;
119         }
120         apollon_flash_resource[0].start = base;
121         apollon_flash_resource[0].end   = base + SZ_128K - 1;
122 }
123
124 static struct resource apollon_smc91x_resources[] = {
125         [0] = {
126                 .flags  = IORESOURCE_MEM,
127         },
128         [1] = {
129                 .start  = OMAP_GPIO_IRQ(APOLLON_ETHR_GPIO_IRQ),
130                 .end    = OMAP_GPIO_IRQ(APOLLON_ETHR_GPIO_IRQ),
131                 .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
132         },
133 };
134
135 static struct platform_device apollon_smc91x_device = {
136         .name           = "smc91x",
137         .id             = -1,
138         .num_resources  = ARRAY_SIZE(apollon_smc91x_resources),
139         .resource       = apollon_smc91x_resources,
140 };
141
142 static struct platform_device apollon_lcd_device = {
143         .name           = "apollon_lcd",
144         .id             = -1,
145 };
146
147 static struct omap_led_config apollon_led_config[] = {
148         {
149                 .cdev   = {
150                         .name   = "apollon:led0",
151                 },
152                 .gpio   = LED0_GPIO13,
153         },
154         {
155                 .cdev   = {
156                         .name   = "apollon:led1",
157                 },
158                 .gpio   = LED1_GPIO14,
159         },
160         {
161                 .cdev   = {
162                         .name   = "apollon:led2",
163                 },
164                 .gpio   = LED2_GPIO15,
165         },
166 };
167
168 static struct omap_led_platform_data apollon_led_data = {
169         .nr_leds        = ARRAY_SIZE(apollon_led_config),
170         .leds           = apollon_led_config,
171 };
172
173 static struct platform_device apollon_led_device = {
174         .name           = "omap-led",
175         .id             = -1,
176         .dev            = {
177                 .platform_data  = &apollon_led_data,
178         },
179 };
180
181 static struct platform_device *apollon_devices[] __initdata = {
182         &apollon_onenand_device,
183         &apollon_smc91x_device,
184         &apollon_lcd_device,
185         &apollon_led_device,
186 };
187
188 static inline void __init apollon_init_smc91x(void)
189 {
190         unsigned long base;
191
192         unsigned int rate;
193         struct clk *gpmc_fck;
194         int eth_cs;
195
196         gpmc_fck = clk_get(NULL, "gpmc_fck");   /* Always on ENABLE_ON_INIT */
197         if (IS_ERR(gpmc_fck)) {
198                 WARN_ON(1);
199                 return;
200         }
201
202         clk_enable(gpmc_fck);
203         rate = clk_get_rate(gpmc_fck);
204
205         eth_cs = APOLLON_ETH_CS;
206
207         /* Make sure CS1 timings are correct */
208         gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG1, 0x00011200);
209
210         if (rate >= 160000000) {
211                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f01);
212                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080803);
213                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1c0b1c0a);
214                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x041f1F1F);
215                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000004C4);
216         } else if (rate >= 130000000) {
217                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f00);
218                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080802);
219                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1C091C09);
220                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x041f1F1F);
221                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000004C4);
222         } else {/* rate = 100000000 */
223                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f00);
224                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080802);
225                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1C091C09);
226                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x031A1F1F);
227                 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000003C2);
228         }
229
230         if (gpmc_cs_request(APOLLON_ETH_CS, SZ_16M, &base) < 0) {
231                 printk(KERN_ERR "Failed to request GPMC CS for smc91x\n");
232                 goto out;
233         }
234         apollon_smc91x_resources[0].start = base + 0x300;
235         apollon_smc91x_resources[0].end   = base + 0x30f;
236         udelay(100);
237
238         omap_cfg_reg(W4__24XX_GPIO74);
239         if (gpio_request(APOLLON_ETHR_GPIO_IRQ, "SMC91x irq") < 0) {
240                 printk(KERN_ERR "Failed to request GPIO%d for smc91x IRQ\n",
241                         APOLLON_ETHR_GPIO_IRQ);
242                 gpmc_cs_free(APOLLON_ETH_CS);
243                 goto out;
244         }
245         gpio_direction_input(APOLLON_ETHR_GPIO_IRQ);
246
247 out:
248         clk_disable(gpmc_fck);
249         clk_put(gpmc_fck);
250 }
251
252 static void __init omap_apollon_init_irq(void)
253 {
254         omap2_init_common_hw();
255         omap_init_irq();
256         omap_gpio_init();
257         apollon_init_smc91x();
258 }
259
260 static struct omap_uart_config apollon_uart_config __initdata = {
261         .enabled_uarts = (1 << 0) | (0 << 1) | (0 << 2),
262 };
263
264 static struct omap_usb_config apollon_usb_config __initdata = {
265         .register_dev   = 1,
266         .hmc_mode       = 0x14, /* 0:dev 1:host1 2:disable */
267
268         .pins[0]        = 6,
269 };
270
271 static struct omap_lcd_config apollon_lcd_config __initdata = {
272         .ctrl_name      = "internal",
273 };
274
275 static struct omap_board_config_kernel apollon_config[] = {
276         { OMAP_TAG_UART,        &apollon_uart_config },
277         { OMAP_TAG_USB,         &apollon_usb_config },
278         { OMAP_TAG_LCD,         &apollon_lcd_config },
279 };
280
281 static void __init apollon_led_init(void)
282 {
283         /* LED0 - AA10 */
284         omap_cfg_reg(AA10_242X_GPIO13);
285         omap_request_gpio(LED0_GPIO13);
286         omap_set_gpio_direction(LED0_GPIO13, 0);
287         omap_set_gpio_dataout(LED0_GPIO13, 0);
288         /* LED1  - AA6 */
289         omap_cfg_reg(AA6_242X_GPIO14);
290         omap_request_gpio(LED1_GPIO14);
291         omap_set_gpio_direction(LED1_GPIO14, 0);
292         omap_set_gpio_dataout(LED1_GPIO14, 0);
293         /* LED2  - AA4 */
294         omap_cfg_reg(AA4_242X_GPIO15);
295         omap_request_gpio(LED2_GPIO15);
296         omap_set_gpio_direction(LED2_GPIO15, 0);
297         omap_set_gpio_dataout(LED2_GPIO15, 0);
298 }
299
300 static irqreturn_t apollon_sw_interrupt(int irq, void *ignored)
301 {
302         static unsigned int led0, led1, led2;
303
304         if (irq == OMAP_GPIO_IRQ(SW_ENTER_GPIO16))
305                 omap_set_gpio_dataout(LED0_GPIO13, led0 ^= 1);
306         else if (irq == OMAP_GPIO_IRQ(SW_UP_GPIO17))
307                 omap_set_gpio_dataout(LED1_GPIO14, led1 ^= 1);
308         else if (irq == OMAP_GPIO_IRQ(SW_DOWN_GPIO58))
309                 omap_set_gpio_dataout(LED2_GPIO15, led2 ^= 1);
310
311         return IRQ_HANDLED;
312 }
313
314 static void __init apollon_sw_init(void)
315 {
316         /* Enter SW - Y11 */
317         omap_cfg_reg(Y11_242X_GPIO16);
318         omap_request_gpio(SW_ENTER_GPIO16);
319         gpio_direction_input(SW_ENTER_GPIO16);
320         /* Up SW - AA12 */
321         omap_cfg_reg(AA12_242X_GPIO17);
322         omap_request_gpio(SW_UP_GPIO17);
323         gpio_direction_input(SW_UP_GPIO17);
324         /* Down SW - AA8 */
325         omap_cfg_reg(AA8_242X_GPIO58);
326         omap_request_gpio(SW_DOWN_GPIO58);
327         gpio_direction_input(SW_DOWN_GPIO58);
328
329         set_irq_type(OMAP_GPIO_IRQ(SW_ENTER_GPIO16), IRQ_TYPE_EDGE_RISING);
330         if (request_irq(OMAP_GPIO_IRQ(SW_ENTER_GPIO16), &apollon_sw_interrupt,
331                                 IRQF_SHARED, "enter sw",
332                                 &apollon_sw_interrupt))
333                 return;
334         set_irq_type(OMAP_GPIO_IRQ(SW_UP_GPIO17), IRQ_TYPE_EDGE_RISING);
335         if (request_irq(OMAP_GPIO_IRQ(SW_UP_GPIO17), &apollon_sw_interrupt,
336                                 IRQF_SHARED, "up sw",
337                                 &apollon_sw_interrupt))
338                 return;
339         set_irq_type(OMAP_GPIO_IRQ(SW_DOWN_GPIO58), IRQ_TYPE_EDGE_RISING);
340         if (request_irq(OMAP_GPIO_IRQ(SW_DOWN_GPIO58), &apollon_sw_interrupt,
341                                 IRQF_SHARED, "down sw",
342                                 &apollon_sw_interrupt))
343                 return;
344 }
345
346 static void __init apollon_usb_init(void)
347 {
348         /* USB device */
349         /* DEVICE_SUSPEND */
350         omap_cfg_reg(P21_242X_GPIO12);
351         gpio_request(12, "USB suspend");
352         gpio_direction_output(12, 0);
353 }
354
355 static void __init omap_apollon_init(void)
356 {
357         u32 v;
358
359         apollon_led_init();
360         apollon_sw_init();
361         apollon_flash_init();
362         apollon_usb_init();
363
364         /* REVISIT: where's the correct place */
365         omap_cfg_reg(W19_24XX_SYS_NIRQ);
366
367         /* Use Interal loop-back in MMC/SDIO Module Input Clock selection */
368         v = omap_ctrl_readl(OMAP2_CONTROL_DEVCONF0);
369         v |= (1 << 24);
370         omap_ctrl_writel(v, OMAP2_CONTROL_DEVCONF0);
371
372         /*
373          * Make sure the serial ports are muxed on at this point.
374          * You have to mux them off in device drivers later on
375          * if not needed.
376          */
377         platform_add_devices(apollon_devices, ARRAY_SIZE(apollon_devices));
378         omap_board_config = apollon_config;
379         omap_board_config_size = ARRAY_SIZE(apollon_config);
380         omap_serial_init();
381 }
382
383 static void __init omap_apollon_map_io(void)
384 {
385         omap2_set_globals_242x();
386         omap2_map_common_io();
387 }
388
389 MACHINE_START(OMAP_APOLLON, "OMAP24xx Apollon")
390         /* Maintainer: Kyungmin Park <kyungmin.park@samsung.com> */
391         .phys_io        = 0x48000000,
392         .io_pg_offst    = ((0xd8000000) >> 18) & 0xfffc,
393         .boot_params    = 0x80000100,
394         .map_io         = omap_apollon_map_io,
395         .init_irq       = omap_apollon_init_irq,
396         .init_machine   = omap_apollon_init,
397         .timer          = &omap_timer,
398 MACHINE_END