1 /* linux/arch/arm/mach-s3c2440/mach-mini2440.c
3 * Copyright (c) 2008 Ramax Lo <ramaxlo@gmail.com>
4 * Based on mach-anubis.c by Ben Dooks <ben@simtec.co.uk>
5 * and modifications by SBZ <sbz@spgui.org> and
6 * Weibing <http://weibing.blogbus.com> and
7 * Michel Pollet <buserror@gmail.com>
9 * For product information, visit http://code.google.com/p/mini2440/
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License version 2 as
13 * published by the Free Software Foundation.
16 #include <linux/kernel.h>
17 #include <linux/types.h>
18 #include <linux/interrupt.h>
19 #include <linux/list.h>
20 #include <linux/timer.h>
21 #include <linux/init.h>
22 #include <linux/gpio.h>
23 #include <linux/input.h>
25 #include <linux/serial_core.h>
26 #include <linux/dm9000.h>
27 #include <linux/i2c/at24.h>
28 #include <linux/platform_device.h>
29 #include <linux/gpio_keys.h>
30 #include <linux/i2c.h>
31 #include <linux/mmc/host.h>
33 #include <asm/mach/arch.h>
34 #include <asm/mach/map.h>
36 #include <mach/hardware.h>
38 #include <asm/mach-types.h>
40 #include <plat/regs-serial.h>
41 #include <mach/regs-gpio.h>
42 #include <mach/leds-gpio.h>
43 #include <mach/regs-mem.h>
44 #include <mach/regs-lcd.h>
45 #include <mach/irqs.h>
46 #include <plat/nand.h>
52 * This is compiled conditionaly, as:
53 * 1) not everyone needs the touchscreen
54 * 2) that s3c_ts code might not have been added
55 * to the kernel with this file
57 #ifdef CONFIG_TOUCHSCREEN_S3C2410
61 #include <linux/mtd/mtd.h>
62 #include <linux/mtd/nand.h>
63 #include <linux/mtd/nand_ecc.h>
64 #include <linux/mtd/partitions.h>
66 #include <plat/clock.h>
67 #include <plat/devs.h>
70 #include <sound/s3c24xx_uda134x.h>
72 #ifdef CONFIG_TOUCHSCREEN_FILTER
73 #include <../drivers/input/touchscreen/ts_filter_linear.h>
74 #include <../drivers/input/touchscreen/ts_filter_mean.h>
75 #include <../drivers/input/touchscreen/ts_filter_median.h>
76 #include <../drivers/input/touchscreen/ts_filter_group.h>
79 #define MACH_MINI2440_DM9K_BASE (S3C2410_CS4 + 0x300)
81 static struct map_desc mini2440_iodesc
[] = {
82 /* nothing to declare, move along */
85 #define UCON S3C2410_UCON_DEFAULT
86 #define ULCON S3C2410_LCON_CS8 | S3C2410_LCON_PNONE | S3C2410_LCON_STOPB
87 #define UFCON S3C2410_UFCON_RXTRIG8 | S3C2410_UFCON_FIFOMODE
90 static struct s3c2410_uartcfg mini2440_uartcfgs
[] = {
114 /* USB device UDC support */
116 static void mini2440_udc_pullup(enum s3c2410_udc_cmd_e cmd
)
118 pr_debug("udc: pullup(%d)\n", cmd
);
121 case S3C2410_UDC_P_ENABLE
:
122 s3c2410_gpio_setpin(S3C2410_GPC(5), 1);
124 case S3C2410_UDC_P_DISABLE
:
125 s3c2410_gpio_setpin(S3C2410_GPC(5), 0);
127 case S3C2410_UDC_P_RESET
:
134 static struct s3c2410_udc_mach_info mini2440_udc_cfg
= {
135 .udc_command
= mini2440_udc_pullup
,
138 /* touchscreen configuration */
140 #ifdef CONFIG_TOUCHSCREEN_FILTER
141 static struct ts_filter_linear_configuration mini2440_ts_linear_config
= {
144 1, /* y proportion */
151 1 /* common divisor */
157 static struct ts_filter_group_configuration mini2440_ts_group_config
= {
160 .threshold
= 6, /* at least half of the points in a group */
164 static struct ts_filter_median_configuration mini2440_ts_median_config
= {
166 .decimation_below
= 3,
167 .decimation_threshold
= 8 * 3,
168 .decimation_above
= 4,
171 static struct ts_filter_mean_configuration mini2440_ts_mean_config
= {
172 .bits_filter_length
= 2, /* 4 points */
175 static struct s3c2410_ts_mach_info mini2440_ts_cfg
= {
177 .presc
= 0xff, /* slow as we can go */
179 [0] = &ts_filter_group_api
,
180 [1] = &ts_filter_median_api
,
181 [2] = &ts_filter_mean_api
,
182 [3] = &ts_filter_linear_api
,
185 [0] = &mini2440_ts_group_config
,
186 [1] = &mini2440_ts_median_config
,
187 [2] = &mini2440_ts_mean_config
,
188 [3] = &mini2440_ts_linear_config
,
191 #else /* !CONFIG_TOUCHSCREEN_FILTER */
192 #ifdef CONFIG_TOUCHSCREEN_S3C2410
193 static struct s3c2410_ts_mach_info mini2440_ts_cfg
= {
195 .presc
= 0xff, /* slow as we can go */
197 #endif /* CONFIG_TOUCHSCREEN_S3C2410 */
200 /* LCD driver info */
202 /* LCD timing and setup */
205 * This macro simplifies the table bellow
207 #define _LCD_DECLARE(_clock,_xres,margin_left,margin_right,hsync, \
208 _yres,margin_top,margin_bottom,vsync, refresh) \
213 .left_margin = margin_left, \
214 .right_margin = margin_right, \
215 .upper_margin = margin_top, \
216 .lower_margin = margin_bottom, \
217 .hsync_len = hsync, \
218 .vsync_len = vsync, \
219 .pixclock = ((_clock*100000000000LL) / \
221 (hsync + margin_left + _xres + margin_right) * \
222 (vsync + margin_top + _yres + margin_bottom))), \
224 .type = (S3C2410_LCDCON1_TFT16BPP |\
227 static struct s3c2410fb_display mini2440_lcd_cfg
[] __initdata
= {
228 [0] = { /* mini2440 + 3.5" TFT + touchscreen - old model "N35" */
230 7, /* The 3.5 is quite fast */
231 240, 21, 38, 6, /* x timing */
232 320, 4, 4, 2, /* y timing */
233 60), /* refresh rate */
234 .lcdcon5
= (S3C2410_LCDCON5_FRM565
|
235 S3C2410_LCDCON5_INVVLINE
|
236 S3C2410_LCDCON5_INVVFRAME
|
237 S3C2410_LCDCON5_INVVDEN
|
238 S3C2410_LCDCON5_PWREN
),
240 [1] = { /* mini2440 + 7" TFT + touchscreen */
242 10, /* the 7" runs slower */
243 800, 40, 40, 48, /* x timing */
244 480, 29, 3, 3, /* y timing */
245 50), /* refresh rate */
246 .lcdcon5
= (S3C2410_LCDCON5_FRM565
|
247 S3C2410_LCDCON5_INVVLINE
|
248 S3C2410_LCDCON5_INVVFRAME
|
249 S3C2410_LCDCON5_PWREN
),
251 /* The VGA shield can outout at several resolutions. All share
252 * the same timings, however, anything smaller than 1024x768
253 * will only be displayed in the top left corner of a 1024x768
254 * XGA output unless you add optional dip switches to the shield.
255 * Therefore timings for other resolutions have been ommited here.
260 1024, 1, 2, 2, /* y timing */
261 768, 200, 16, 16, /* x timing */
262 24), /* refresh rate, maximum stable,
263 tested with the FPGA shield */
264 .lcdcon5
= (S3C2410_LCDCON5_FRM565
|
265 S3C2410_LCDCON5_HWSWP
),
268 [3] = { /* mini2440 + 3.5" TFT + TS -- New model as Nov 2009 "T35" */
270 7, /* The 3.5 is quite fast */
271 240, 21, 25, 6, /* x timing */
272 320, 2, 4, 2, /* y timing */
273 40), /* refresh rate */
274 .lcdcon5
= (S3C2410_LCDCON5_FRM565
|
275 S3C2410_LCDCON5_INVVLINE
|
276 S3C2410_LCDCON5_INVVFRAME
|
277 S3C2410_LCDCON5_INVVDEN
|
278 S3C2410_LCDCON5_PWREN
),
280 [4] = { /* mini2440 + 5.6" TFT + touchscreen -- Innolux AT056TN52 */
281 /* be sure the "power" jumper is set accordingly ! */
283 10, /* the 5.3" runs slower */
284 640, 41, 68, 22, /* x timing */
285 480, 26, 6, 2, /* y timing */
286 40), /* refresh rate */
287 .lcdcon5
= (S3C2410_LCDCON5_FRM565
|
288 S3C2410_LCDCON5_INVVLINE
|
289 S3C2410_LCDCON5_INVVFRAME
|
290 S3C2410_LCDCON5_PWREN
),
294 /* todo - put into gpio header */
296 #define S3C2410_GPCCON_MASK(x) (3 << ((x) * 2))
297 #define S3C2410_GPDCON_MASK(x) (3 << ((x) * 2))
299 static struct s3c2410fb_mach_info mini2440_fb_info __initdata
= {
300 .displays
= &mini2440_lcd_cfg
[0], /* not constant! see init */
302 .default_display
= 0,
304 /* Enable VD[2..7], VD[10..15], VD[18..23] and VCLK, syncs, VDEN
305 * and disable the pull down resistors on pins we are using for LCD
308 .gpcup
= (0xf << 1) | (0x3f << 10),
310 .gpccon
= (S3C2410_GPC1_VCLK
| S3C2410_GPC2_VLINE
|
311 S3C2410_GPC3_VFRAME
| S3C2410_GPC4_VM
|
312 S3C2410_GPC10_VD2
| S3C2410_GPC11_VD3
|
313 S3C2410_GPC12_VD4
| S3C2410_GPC13_VD5
|
314 S3C2410_GPC14_VD6
| S3C2410_GPC15_VD7
),
316 .gpccon_mask
= (S3C2410_GPCCON_MASK(1) | S3C2410_GPCCON_MASK(2) |
317 S3C2410_GPCCON_MASK(3) | S3C2410_GPCCON_MASK(4) |
318 S3C2410_GPCCON_MASK(10) | S3C2410_GPCCON_MASK(11) |
319 S3C2410_GPCCON_MASK(12) | S3C2410_GPCCON_MASK(13) |
320 S3C2410_GPCCON_MASK(14) | S3C2410_GPCCON_MASK(15)),
322 .gpdup
= (0x3f << 2) | (0x3f << 10),
324 .gpdcon
= (S3C2410_GPD2_VD10
| S3C2410_GPD3_VD11
|
325 S3C2410_GPD4_VD12
| S3C2410_GPD5_VD13
|
326 S3C2410_GPD6_VD14
| S3C2410_GPD7_VD15
|
327 S3C2410_GPD10_VD18
| S3C2410_GPD11_VD19
|
328 S3C2410_GPD12_VD20
| S3C2410_GPD13_VD21
|
329 S3C2410_GPD14_VD22
| S3C2410_GPD15_VD23
),
331 .gpdcon_mask
= (S3C2410_GPDCON_MASK(2) | S3C2410_GPDCON_MASK(3) |
332 S3C2410_GPDCON_MASK(4) | S3C2410_GPDCON_MASK(5) |
333 S3C2410_GPDCON_MASK(6) | S3C2410_GPDCON_MASK(7) |
334 S3C2410_GPDCON_MASK(10) | S3C2410_GPDCON_MASK(11)|
335 S3C2410_GPDCON_MASK(12) | S3C2410_GPDCON_MASK(13)|
336 S3C2410_GPDCON_MASK(14) | S3C2410_GPDCON_MASK(15)),
341 static struct s3c24xx_mci_pdata mini2440_mmc_cfg
= {
342 .gpio_detect
= S3C2410_GPG(8),
343 .gpio_wprotect
= S3C2410_GPH(8),
345 .ocr_avail
= MMC_VDD_32_33
|MMC_VDD_33_34
,
348 /* NAND Flash on MINI2440 board */
350 static struct mtd_partition mini2440_default_nand_part
[] = {
357 .name
= "u-boot-env",
363 /* 5 megabytes, for a kernel with no modules
364 * or a uImage with a ramdisk attached */
366 .offset
= SZ_256K
+ SZ_128K
,
370 .offset
= SZ_256K
+ SZ_128K
+ 0x00500000,
371 .size
= MTDPART_SIZ_FULL
,
375 static struct s3c2410_nand_set mini2440_nand_sets
[] = {
379 .nr_partitions
= ARRAY_SIZE(mini2440_default_nand_part
),
380 .partitions
= mini2440_default_nand_part
,
381 .flash_bbt
= 1, /* we use u-boot to create a BBT */
385 static struct s3c2410_platform_nand mini2440_nand_info
= {
389 .nr_sets
= ARRAY_SIZE(mini2440_nand_sets
),
390 .sets
= mini2440_nand_sets
,
391 .ignore_unset_ecc
= 1,
394 /* DM9000AEP 10/100 ethernet controller */
396 static struct resource mini2440_dm9k_resource
[] = {
398 .start
= MACH_MINI2440_DM9K_BASE
,
399 .end
= MACH_MINI2440_DM9K_BASE
+ 3,
400 .flags
= IORESOURCE_MEM
403 .start
= MACH_MINI2440_DM9K_BASE
+ 4,
404 .end
= MACH_MINI2440_DM9K_BASE
+ 7,
405 .flags
= IORESOURCE_MEM
410 .flags
= IORESOURCE_IRQ
| IORESOURCE_IRQ_HIGHEDGE
,
415 * The DM9000 has no eeprom, and it's MAC address is set by
416 * the bootloader before starting the kernel.
418 static struct dm9000_plat_data mini2440_dm9k_pdata
= {
419 .flags
= (DM9000_PLATF_16BITONLY
| DM9000_PLATF_NO_EEPROM
),
422 static struct platform_device mini2440_device_eth
= {
425 .num_resources
= ARRAY_SIZE(mini2440_dm9k_resource
),
426 .resource
= mini2440_dm9k_resource
,
428 .platform_data
= &mini2440_dm9k_pdata
,
449 static struct gpio_keys_button mini2440_buttons
[] = {
451 .gpio
= S3C2410_GPG(0), /* K1 */
457 .gpio
= S3C2410_GPG(3), /* K2 */
463 .gpio
= S3C2410_GPG(5), /* K3 */
469 .gpio
= S3C2410_GPG(6), /* K4 */
475 .gpio
= S3C2410_GPG(7), /* K5 */
481 /* this pin is also known as TCLK1 and seems to already
482 * marked as "in use" somehow in the kernel -- possibly wrongly */
484 .gpio
= S3C2410_GPG(11), /* K6 */
492 static struct gpio_keys_platform_data mini2440_button_data
= {
493 .buttons
= mini2440_buttons
,
494 .nbuttons
= ARRAY_SIZE(mini2440_buttons
),
497 static struct platform_device mini2440_button_device
= {
501 .platform_data
= &mini2440_button_data
,
507 static struct s3c24xx_led_platdata mini2440_led1_pdata
= {
509 .gpio
= S3C2410_GPB(5),
510 .flags
= S3C24XX_LEDF_ACTLOW
| S3C24XX_LEDF_TRISTATE
,
511 .def_trigger
= "heartbeat",
514 static struct s3c24xx_led_platdata mini2440_led2_pdata
= {
516 .gpio
= S3C2410_GPB(6),
517 .flags
= S3C24XX_LEDF_ACTLOW
| S3C24XX_LEDF_TRISTATE
,
518 .def_trigger
= "nand-disk",
521 static struct s3c24xx_led_platdata mini2440_led3_pdata
= {
523 .gpio
= S3C2410_GPB(7),
524 .flags
= S3C24XX_LEDF_ACTLOW
| S3C24XX_LEDF_TRISTATE
,
525 .def_trigger
= "mmc0",
528 static struct s3c24xx_led_platdata mini2440_led4_pdata
= {
530 .gpio
= S3C2410_GPB(8),
531 .flags
= S3C24XX_LEDF_ACTLOW
| S3C24XX_LEDF_TRISTATE
,
535 static struct s3c24xx_led_platdata mini2440_led_backlight_pdata
= {
537 .gpio
= S3C2410_GPG(4),
538 .flags
= S3C24XX_LEDF_STARTON
,
539 .def_trigger
= "backlight",
542 static struct platform_device mini2440_led1
= {
543 .name
= "s3c24xx_led",
546 .platform_data
= &mini2440_led1_pdata
,
550 static struct platform_device mini2440_led2
= {
551 .name
= "s3c24xx_led",
554 .platform_data
= &mini2440_led2_pdata
,
558 static struct platform_device mini2440_led3
= {
559 .name
= "s3c24xx_led",
562 .platform_data
= &mini2440_led3_pdata
,
566 static struct platform_device mini2440_led4
= {
567 .name
= "s3c24xx_led",
570 .platform_data
= &mini2440_led4_pdata
,
574 static struct platform_device mini2440_led_backlight
= {
575 .name
= "s3c24xx_led",
578 .platform_data
= &mini2440_led_backlight_pdata
,
584 static struct s3c24xx_uda134x_platform_data mini2440_audio_pins
= {
585 .l3_clk
= S3C2410_GPB(4),
586 .l3_mode
= S3C2410_GPB(2),
587 .l3_data
= S3C2410_GPB(3),
588 .model
= UDA134X_UDA1341
591 static struct platform_device mini2440_audio
= {
592 .name
= "s3c24xx_uda134x",
595 .platform_data
= &mini2440_audio_pins
,
602 static struct at24_platform_data at24c08
= {
603 .byte_len
= SZ_8K
/ 8,
607 static struct i2c_board_info mini2440_i2c_devs
[] = {
609 I2C_BOARD_INFO("24c08", 0x50),
610 .platform_data
= &at24c08
,
614 static struct platform_device
*mini2440_devices
[] = {
617 /* &s3c_device_adc,*/ /* ADC doesn't like living with touchscreen ! */
620 &s3c_device_usbgadget
,
621 &mini2440_device_eth
,
626 &mini2440_button_device
,
631 /* &s3c_device_timer[0],*/ /* buzzer pwm, no API for it */
632 /* remaining devices are optional */
635 static void __init
mini2440_map_io(void)
637 s3c24xx_init_io(mini2440_iodesc
, ARRAY_SIZE(mini2440_iodesc
));
638 s3c24xx_init_clocks(12000000);
639 s3c24xx_init_uarts(mini2440_uartcfgs
, ARRAY_SIZE(mini2440_uartcfgs
));
641 s3c_device_nand
.dev
.platform_data
= &mini2440_nand_info
;
642 s3c_device_sdi
.dev
.platform_data
= &mini2440_mmc_cfg
;
646 * mini2440_features string
648 * t = Touchscreen present
649 * b = backlight control
651 * 0-9 LCD configuration
654 static char mini2440_features_str
[12] __initdata
= "0tb";
656 static int __init
mini2440_features_setup(char *str
)
659 strlcpy(mini2440_features_str
, str
, sizeof(mini2440_features_str
));
663 __setup("mini2440=", mini2440_features_setup
);
665 #define FEATURE_SCREEN (1 << 0)
666 #define FEATURE_BACKLIGHT (1 << 1)
667 #define FEATURE_TOUCH (1 << 2)
668 #define FEATURE_CAMERA (1 << 3)
670 struct mini2440_features_t
{
674 struct platform_device
*optional
[8];
677 static void mini2440_parse_features(
678 struct mini2440_features_t
* features
,
679 const char * features_str
)
681 const char * fp
= features_str
;
685 features
->lcd_index
= -1;
691 case '0'...'9': /* tft screen */
692 if (features
->done
& FEATURE_SCREEN
) {
693 printk(KERN_INFO
"MINI2440: '%c' ignored, "
694 "screen type already set\n", f
);
697 if (li
>= ARRAY_SIZE(mini2440_lcd_cfg
))
698 printk(KERN_INFO
"MINI2440: "
699 "'%c' out of range LCD mode\n", f
);
701 features
->optional
[features
->count
++] =
703 features
->lcd_index
= li
;
706 features
->done
|= FEATURE_SCREEN
;
709 if (features
->done
& FEATURE_BACKLIGHT
)
710 printk(KERN_INFO
"MINI2440: '%c' ignored, "
711 "backlight already set\n", f
);
713 features
->optional
[features
->count
++] =
714 &mini2440_led_backlight
;
716 features
->done
|= FEATURE_BACKLIGHT
;
719 #ifdef CONFIG_TOUCHSCREEN_S3C2410
720 if (features
->done
& FEATURE_TOUCH
)
721 printk(KERN_INFO
"MINI2440: '%c' ignored, "
722 "touchscreen already set\n", f
);
724 features
->optional
[features
->count
++] =
726 features
->done
|= FEATURE_TOUCH
;
728 printk(KERN_INFO
"MINI2440: '%c' ignored, "
729 "touchscreen not compiled in\n", f
);
733 if (features
->done
& FEATURE_CAMERA
)
734 printk(KERN_INFO
"MINI2440: '%c' ignored, "
735 "camera already registered\n", f
);
737 features
->optional
[features
->count
++] =
739 features
->done
|= FEATURE_CAMERA
;
745 static void __init
mini2440_init(void)
747 struct mini2440_features_t features
= { 0 };
750 printk(KERN_INFO
"MINI2440: Option string mini2440=%s\n",
751 mini2440_features_str
);
753 /* Parse the feature string */
754 mini2440_parse_features(&features
, mini2440_features_str
);
757 s3c2410_gpio_cfgpin(S3C2410_GPC(0), S3C2410_GPC0_LEND
);
759 /* Turn the backlight early on */
760 s3c2410_gpio_setpin(S3C2410_GPG(4), 1);
761 s3c2410_gpio_cfgpin(S3C2410_GPG(4), S3C2410_GPIO_OUTPUT
);
763 /* remove pullup on optional PWM backlight -- unused on 3.5 and 7"s */
764 s3c2410_gpio_pullup(S3C2410_GPB(1), 0);
765 s3c2410_gpio_setpin(S3C2410_GPB(1), 0);
766 s3c2410_gpio_cfgpin(S3C2410_GPB(1), S3C2410_GPIO_INPUT
);
768 /* Make sure the D+ pullup pin is output */
769 s3c2410_gpio_cfgpin(S3C2410_GPC(5), S3C2410_GPIO_OUTPUT
);
771 /* mark the key as input, without pullups (there is one on the board) */
772 for (i
= 0; i
< ARRAY_SIZE(mini2440_buttons
); i
++) {
773 s3c2410_gpio_pullup(mini2440_buttons
[i
].gpio
, 0);
774 s3c2410_gpio_cfgpin(mini2440_buttons
[i
].gpio
,
777 if (features
.lcd_index
!= -1) {
780 mini2440_fb_info
.displays
=
781 &mini2440_lcd_cfg
[features
.lcd_index
];
783 printk(KERN_INFO
"MINI2440: LCD");
784 for (li
= 0; li
< ARRAY_SIZE(mini2440_lcd_cfg
); li
++)
785 if (li
== features
.lcd_index
)
786 printk(" [%d:%dx%d]", li
,
787 mini2440_lcd_cfg
[li
].width
,
788 mini2440_lcd_cfg
[li
].height
);
790 printk(" %d:%dx%d", li
,
791 mini2440_lcd_cfg
[li
].width
,
792 mini2440_lcd_cfg
[li
].height
);
794 s3c24xx_fb_set_platdata(&mini2440_fb_info
);
796 s3c24xx_udc_set_platdata(&mini2440_udc_cfg
);
797 s3c_i2c0_set_platdata(NULL
);
798 i2c_register_board_info(0, mini2440_i2c_devs
,
799 ARRAY_SIZE(mini2440_i2c_devs
));
801 #ifdef CONFIG_TOUCHSCREEN_S3C2410
802 if (features
.done
& FEATURE_TOUCH
)
803 set_s3c2410ts_info(&mini2440_ts_cfg
);
806 platform_add_devices(mini2440_devices
, ARRAY_SIZE(mini2440_devices
));
808 if (features
.count
) /* the optional features */
809 platform_add_devices(features
.optional
, features
.count
);
814 MACHINE_START(MINI2440
, "MINI2440")
815 /* Maintainer: Michel Pollet <buserror@gmail.com> */
816 .phys_io
= S3C2410_PA_UART
,
817 .io_pg_offst
= (((u32
)S3C24XX_VA_UART
) >> 18) & 0xfffc,
818 .boot_params
= S3C2410_SDRAM_PA
+ 0x100,
819 .map_io
= mini2440_map_io
,
820 .init_machine
= mini2440_init
,
821 .init_irq
= s3c24xx_init_irq
,
822 .timer
= &s3c24xx_timer
,