[u-boot.git] / board / trab / trab.c

/*
 * (C) Copyright 2002
 * Gary Jennejohn, DENX Software Engineering, <[email protected]>
 *
 * See file CREDITS for list of people who contributed to this
 * project.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of
 * the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 * MA 02111-1307 USA
 */

/* #define DEBUG */

#include <common.h>
#include <malloc.h>
#include <s3c2400.h>
#include <command.h>

/* ------------------------------------------------------------------------- */

#ifdef CFG_BRIGHTNESS
static void spi_init(void);
static void wait_transmit_done(void);
static void tsc2000_write(unsigned int page, unsigned int reg,
						  unsigned int data);
static void tsc2000_set_brightness(void);
#endif
#ifdef CONFIG_MODEM_SUPPORT
static int key_pressed(void);
extern void disable_putc(void);
extern int do_mdm_init; /* defined in common/main.c */

/*
 * We need a delay of at least 500 us after turning on the VFD clock
 * before we can read any useful information for the CPLD controlling
 * the keyboard switches. Let's play safe and wait 5 ms. The problem
 * is that timers are not available yet, so we use a manually timed
 * loop.
 */
#define KBD_MDELAY	5000
static void udelay_no_timer (int usec)
{
	DECLARE_GLOBAL_DATA_PTR;

	int i;
	int delay = usec * 3;

	for (i = 0; i < delay; i ++) gd->bd->bi_arch_number = 145;
}
#endif /* CONFIG_MODEM_SUPPORT */

/*
 * Miscellaneous platform dependent initialisations
 */

int board_init ()
{
#if defined(CONFIG_VFD)
	extern int vfd_init_clocks(void);
#endif
	DECLARE_GLOBAL_DATA_PTR;
	S3C24X0_CLOCK_POWER * const clk_power = S3C24X0_GetBase_CLOCK_POWER();
	S3C24X0_GPIO * const gpio = S3C24X0_GetBase_GPIO();

	/* memory and cpu-speed are setup before relocation */
#ifdef CONFIG_TRAB_50MHZ
	/* change the clock to be 50 MHz 1:1:1 */
	/* MDIV:0x5c PDIV:4 SDIV:2 */
	clk_power->MPLLCON = 0x5c042;
	clk_power->CLKDIVN = 0;
#else
	/* change the clock to be 133 MHz 1:2:4 */
	/* MDIV:0x7d PDIV:4 SDIV:1 */
	clk_power->MPLLCON = 0x7d041;
	clk_power->CLKDIVN = 3;
#endif

	/* set up the I/O ports */
	gpio->PACON = 0x3ffff;
	gpio->PBCON = 0xaaaaaaaa;
	gpio->PBUP  = 0xffff;
	/* INPUT nCTS0 nRTS0 TXD[1] TXD[0] RXD[1] RXD[0]	*/
	/*  00,    10,      10,      10,      10,      10,      10 	*/
	gpio->PFCON = (2<<0) | (2<<2) | (2<<4) | (2<<6) | (2<<8) | (2<<10);
#ifdef CONFIG_HWFLOW
	/* do not pull up RXD0, RXD1, TXD0, TXD1, CTS0, RTS0 */
	gpio->PFUP  = (1<<0) | (1<<1) | (1<<2) | (1<<3) | (1<<4) | (1<<5);
#else
	/* do not pull up RXD0, RXD1, TXD0, TXD1 */
	gpio->PFUP  = (1<<0) | (1<<1) | (1<<2) | (1<<3);
#endif
	gpio->PGCON = 0x0;
	gpio->PGUP  = 0x0;
	gpio->OPENCR= 0x0;

	/* arch number of SAMSUNG-Board */
	/* MACH_TYPE_SMDK2400 */
	/* XXX this isn't really correct, but keep it for now */
	gd->bd->bi_arch_number = 145;

	/* adress of boot parameters */
	gd->bd->bi_boot_params = 0x0c000100;

	/* Make sure both buzzers are turned off */
	gpio->PDCON |= 0x5400;
	gpio->PDDAT &= ~0xE0;

#ifdef CONFIG_VFD
	vfd_init_clocks();
#endif /* CONFIG_VFD */

#ifdef CONFIG_MODEM_SUPPORT
	udelay_no_timer (KBD_MDELAY);

	if (key_pressed()) {
		disable_putc();	/* modem doesn't understand banner etc */
		do_mdm_init = 1;
	}
#endif	/* CONFIG_MODEM_SUPPORT */

	return 0;
}

int dram_init (void)
{
	DECLARE_GLOBAL_DATA_PTR;

	gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
	gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE;
	return 0;
}

/*-----------------------------------------------------------------------
 * Keyboard Controller
 */

/* Maximum key number */
#define KEYBD_KEY_NUM		4

#define KBD_DATA	(((*(volatile ulong *)0x04020000) >> 16) & 0xF)

static uchar *key_match (ulong);

int misc_init_r (void)
{
	ulong kbd_data = KBD_DATA;
	uchar keybd_env[KEYBD_KEY_NUM + 1];
	uchar *str;
	int i;

	for (i = 0; i < KEYBD_KEY_NUM; ++i) {
		keybd_env[i] = '0' + ((kbd_data >> i) & 1);
	}
	keybd_env[i] = '\0';
	debug ("** Setting keybd=\"%s\"\n", keybd_env);
	setenv ("keybd", keybd_env);

	str = strdup (key_match (kbd_data));	/* decode keys */

#ifdef CONFIG_PREBOOT	/* automatically configure "preboot" command on key match */
	debug ("** Setting preboot=\"%s\"\n", str);
	setenv ("preboot", str);	/* set or delete definition */
#endif /* CONFIG_PREBOOT */
	if (str != NULL) {
		free (str);
	}

#ifdef CFG_BRIGHTNESS
	tsc2000_set_brightness();
#endif
	return (0);
}

#ifdef CONFIG_PREBOOT

static uchar kbd_magic_prefix[] = "key_magic";
static uchar kbd_command_prefix[] = "key_cmd";

static int compare_magic (ulong kbd_data, uchar *str)
{
	uchar key_mask;

	debug ("compare_magic: kbd: %04lx  str: \"%s\"\n",kbd_data,str);
	for (; *str; str++)
	{
		uchar c = *str - '1';

		if (c >= KEYBD_KEY_NUM)		/* bad key number */
			return -1;

		key_mask = 1 << c;

		if (!(kbd_data & key_mask)) {	/* key not pressed */
			debug ( "compare_magic: "
				"kbd: %04lx mask: %04lx - key not pressed\n",
				kbd_data, key_mask );
			return -1;
		}

		kbd_data &= ~key_mask;
	}

	if (kbd_data) {				/* key(s) not released */
		debug ( "compare_magic: "
			"kbd: %04lx - key(s) not released\n", kbd_data);
		return -1;
	}

	return 0;
}

/*-----------------------------------------------------------------------
 * Check if pressed key(s) match magic sequence,
 * and return the command string associated with that key(s).
 *
 * If no key press was decoded, NULL is returned.
 *
 * Note: the first character of the argument will be overwritten with
 * the "magic charcter code" of the decoded key(s), or '\0'.
 *
 *
 * Note: the string points to static environment data and must be
 * saved before you call any function that modifies the environment.
 */
static uchar *key_match (ulong kbd_data)
{
	uchar magic[sizeof (kbd_magic_prefix) + 1];
	uchar cmd_name[sizeof (kbd_command_prefix) + 1];
	uchar *suffix;
	uchar *kbd_magic_keys;

	/*
	 * The following string defines the characters that can pe appended
	 * to "key_magic" to form the names of environment variables that
	 * hold "magic" key codes, i. e. such key codes that can cause
	 * pre-boot actions. If the string is empty (""), then only
	 * "key_magic" is checked (old behaviour); the string "125" causes
	 * checks for "key_magic1", "key_magic2" and "key_magic5", etc.
	 */
	if ((kbd_magic_keys = getenv ("magic_keys")) == NULL)
		kbd_magic_keys = "";

	debug ("key_match: magic_keys=\"%s\"\n", kbd_magic_keys);

	/* loop over all magic keys;
	 * use '\0' suffix in case of empty string
	 */
	for (suffix=kbd_magic_keys; *suffix || suffix==kbd_magic_keys; ++suffix)
	{
		sprintf (magic, "%s%c", kbd_magic_prefix, *suffix);

		debug ("key_match: magic=\"%s\"\n",
			getenv(magic) ? getenv(magic) : "<UNDEFINED>");

		if (compare_magic(kbd_data, getenv(magic)) == 0)
		{
			sprintf (cmd_name, "%s%c", kbd_command_prefix, *suffix);
			debug ("key_match: cmdname %s=\"%s\"\n",
				cmd_name,
				getenv (cmd_name) ?
					getenv (cmd_name) :
					"<UNDEFINED>");
			return (getenv (cmd_name));
		}
	}
	debug ("key_match: no match\n");
	return (NULL);
}
#endif							/* CONFIG_PREBOOT */

/* Read Keyboard status */
int do_kbd (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
{
	ulong kbd_data = KBD_DATA;
	uchar keybd_env[KEYBD_KEY_NUM + 1];
	int i;

	puts ("Keys:");
	for (i = 0; i < KEYBD_KEY_NUM; ++i) {
		keybd_env[i] = '0' + ((kbd_data >> i) & 1);
		printf (" %c", keybd_env[i]);
	}
	keybd_env[i] = '\0';
	putc ('\n');
	setenv ("keybd", keybd_env);
	return 0;
}

cmd_tbl_t U_BOOT_CMD(kbd) = MK_CMD_ENTRY(
 	"kbd",	1,	1,	do_kbd,
 	"kbd     - read keyboard status\n",
 	NULL
);

#ifdef CONFIG_MODEM_SUPPORT
static int key_pressed(void)
{
	return (compare_magic(KBD_DATA, CONFIG_MODEM_KEY_MAGIC) == 0);
}
#endif	/* CONFIG_MODEM_SUPPORT */

#ifdef CFG_BRIGHTNESS

static inline void SET_CS_TOUCH(void)
{
	S3C24X0_GPIO * const gpio = S3C24X0_GetBase_GPIO();

	gpio->PDDAT &= 0x5FF;
}

static inline void CLR_CS_TOUCH(void)
{
	S3C24X0_GPIO * const gpio = S3C24X0_GetBase_GPIO();

	gpio->PDDAT |= 0x200;
}

static void spi_init(void)
{
	S3C24X0_GPIO * const gpio = S3C24X0_GetBase_GPIO();
	S3C24X0_SPI * const spi = S3C24X0_GetBase_SPI();
	int i;

	/* Configure I/O ports. */
 	gpio->PDCON = (gpio->PDCON & 0xF3FFFF) | 0x040000;
	gpio->PGCON = (gpio->PGCON & 0x0F3FFF) | 0x008000;
	gpio->PGCON = (gpio->PGCON & 0x0CFFFF) | 0x020000;
	gpio->PGCON = (gpio->PGCON & 0x03FFFF) | 0x080000;

	CLR_CS_TOUCH();

	spi->ch[0].SPPRE = 0x1F; /* Baudrate ca. 514kHz */
	spi->ch[0].SPPIN = 0x01;  /* SPI-MOSI holds Level after last bit */
	spi->ch[0].SPCON = 0x1A;  /* Polling, Prescaler, Master, CPOL=0, CPHA=1 */

	/* Dummy byte ensures clock to be low. */
	for (i = 0; i < 10; i++) {
		spi->ch[0].SPTDAT = 0xFF;
	}
	wait_transmit_done();
}

static void wait_transmit_done(void)
{
	S3C24X0_SPI * const spi = S3C24X0_GetBase_SPI();

	while (!(spi->ch[0].SPSTA & 0x01)); /* wait until transfer is done */
}

static void tsc2000_write(unsigned int page, unsigned int reg,
						  unsigned int data)
{
	S3C24X0_SPI * const spi = S3C24X0_GetBase_SPI();
	unsigned int command;

	SET_CS_TOUCH();
	command = 0x0000;
	command |= (page << 11);
	command |= (reg << 5);

	spi->ch[0].SPTDAT = (command & 0xFF00) >> 8;
	wait_transmit_done();
	spi->ch[0].SPTDAT = (command & 0x00FF);
	wait_transmit_done();
	spi->ch[0].SPTDAT = (data & 0xFF00) >> 8;
	wait_transmit_done();
	spi->ch[0].SPTDAT = (data & 0x00FF);
	wait_transmit_done();

	CLR_CS_TOUCH();
}

static void tsc2000_set_brightness(void)
{
	uchar tmp[10];
	int i, br;

	spi_init();
	tsc2000_write(1, 2, 0x0); /* Power up DAC */

	i = getenv_r("brightness", tmp, sizeof(tmp));
	br = (i > 0)
		? (int) simple_strtoul (tmp, NULL, 10)
		: CFG_BRIGHTNESS;

	tsc2000_write(0, 0xb, br & 0xff);
}
#endif
Commit	Line	Data
c609719b WD	1	/*
	2	* (C) Copyright 2002
	3	* Gary Jennejohn, DENX Software Engineering, <[email protected]>
	4	*
	5	* See file CREDITS for list of people who contributed to this
	6	* project.
	7	*
	8	* This program is free software; you can redistribute it and/or
	9	* modify it under the terms of the GNU General Public License as
	10	* published by the Free Software Foundation; either version 2 of
	11	* the License, or (at your option) any later version.
	12	*
	13	* This program is distributed in the hope that it will be useful,
	14	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	16	* GNU General Public License for more details.
	17	*
	18	* You should have received a copy of the GNU General Public License
	19	* along with this program; if not, write to the Free Software
	20	* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
	21	* MA 02111-1307 USA
	22	*/
	23
	24	/* #define DEBUG */
	25
	26	#include <common.h>
c609719b WD	27	#include <malloc.h>
c609719b WD	28	#include <s3c2400.h>
8bde7f77	29	#include <command.h>
c609719b WD	30
	31	/* ------------------------------------------------------------------------- */
	32
1cb8e980 WD	33	#ifdef CFG_BRIGHTNESS
	34	static void spi_init(void);
	35	static void wait_transmit_done(void);
82226bf4	36	static void tsc2000_write(unsigned int page, unsigned int reg,
1cb8e980 WD	37	unsigned int data);
	38	static void tsc2000_set_brightness(void);
	39	#endif
c609719b WD	40	#ifdef CONFIG_MODEM_SUPPORT
	41	static int key_pressed(void);
	42	extern void disable_putc(void);
	43	extern int do_mdm_init; /* defined in common/main.c */
	44
	45	/*
	46	* We need a delay of at least 500 us after turning on the VFD clock
	47	* before we can read any useful information for the CPLD controlling
	48	* the keyboard switches. Let's play safe and wait 5 ms. The problem
	49	* is that timers are not available yet, so we use a manually timed
	50	* loop.
	51	*/
e95b61cf WD	52	#define KBD_MDELAY 5000
e95b61cf WD	53	static void udelay_no_timer (int usec)
c609719b WD	54	{
	55	DECLARE_GLOBAL_DATA_PTR;
	56
	57	int i;
e95b61cf	58	int delay = usec * 3;
c609719b WD	59
	60	for (i = 0; i < delay; i ++) gd->bd->bi_arch_number = 145;
	61	}
	62	#endif /* CONFIG_MODEM_SUPPORT */
	63
	64	/*
	65	* Miscellaneous platform dependent initialisations
	66	*/
	67
	68	int board_init ()
	69	{
6069ff26 WD	70	#if defined(CONFIG_VFD)
6069ff26 WD	71	extern int vfd_init_clocks(void);
a6c7ad2f	72	#endif
c609719b	73	DECLARE_GLOBAL_DATA_PTR;
48b42616 WD	74	S3C24X0_CLOCK_POWER * const clk_power = S3C24X0_GetBase_CLOCK_POWER();
48b42616 WD	75	S3C24X0_GPIO * const gpio = S3C24X0_GetBase_GPIO();
c609719b WD	76
	77	/* memory and cpu-speed are setup before relocation */
	78	#ifdef CONFIG_TRAB_50MHZ
	79	/* change the clock to be 50 MHz 1:1:1 */
	80	/* MDIV:0x5c PDIV:4 SDIV:2 */
48b42616 WD	81	clk_power->MPLLCON = 0x5c042;
48b42616 WD	82	clk_power->CLKDIVN = 0;
c609719b WD	83	#else
	84	/* change the clock to be 133 MHz 1:2:4 */
	85	/* MDIV:0x7d PDIV:4 SDIV:1 */
48b42616 WD	86	clk_power->MPLLCON = 0x7d041;
48b42616 WD	87	clk_power->CLKDIVN = 3;
c609719b WD	88	#endif
	89
	90	/* set up the I/O ports */
48b42616 WD	91	gpio->PACON = 0x3ffff;
	92	gpio->PBCON = 0xaaaaaaaa;
	93	gpio->PBUP = 0xffff;
c609719b WD	94	/* INPUT nCTS0 nRTS0 TXD[1] TXD[0] RXD[1] RXD[0] */
c609719b WD	95	/* 00, 10, 10, 10, 10, 10, 10 */
48b42616	96	gpio->PFCON = (2<<0) \| (2<<2) \| (2<<4) \| (2<<6) \| (2<<8) \| (2<<10);
c609719b WD	97	#ifdef CONFIG_HWFLOW
c609719b WD	98	/* do not pull up RXD0, RXD1, TXD0, TXD1, CTS0, RTS0 */
48b42616	99	gpio->PFUP = (1<<0) \| (1<<1) \| (1<<2) \| (1<<3) \| (1<<4) \| (1<<5);
c609719b WD	100	#else
c609719b WD	101	/* do not pull up RXD0, RXD1, TXD0, TXD1 */
48b42616	102	gpio->PFUP = (1<<0) \| (1<<1) \| (1<<2) \| (1<<3);
c609719b	103	#endif
48b42616 WD	104	gpio->PGCON = 0x0;
	105	gpio->PGUP = 0x0;
	106	gpio->OPENCR= 0x0;
c609719b WD	107
	108	/* arch number of SAMSUNG-Board */
	109	/* MACH_TYPE_SMDK2400 */
	110	/* XXX this isn't really correct, but keep it for now */
	111	gd->bd->bi_arch_number = 145;
	112
	113	/* adress of boot parameters */
	114	gd->bd->bi_boot_params = 0x0c000100;
	115
1cb8e980	116	/* Make sure both buzzers are turned off */
48b42616 WD	117	gpio->PDCON \|= 0x5400;
48b42616 WD	118	gpio->PDDAT &= ~0xE0;
1cb8e980	119
a6c7ad2f	120	#ifdef CONFIG_VFD
6069ff26	121	vfd_init_clocks();
a6c7ad2f	122	#endif /* CONFIG_VFD */
c609719b	123
6069ff26	124	#ifdef CONFIG_MODEM_SUPPORT
e95b61cf	125	udelay_no_timer (KBD_MDELAY);
c609719b WD	126
	127	if (key_pressed()) {
	128	disable_putc(); /* modem doesn't understand banner etc */
	129	do_mdm_init = 1;
	130	}
	131	#endif /* CONFIG_MODEM_SUPPORT */
	132
	133	return 0;
	134	}
	135
	136	int dram_init (void)
	137	{
	138	DECLARE_GLOBAL_DATA_PTR;
	139
	140	gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
	141	gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE;
	142	return 0;
	143	}
	144
	145	/*-----------------------------------------------------------------------
	146	* Keyboard Controller
	147	*/
	148
	149	/* Maximum key number */
	150	#define KEYBD_KEY_NUM 4
	151
	152	#define KBD_DATA ((((volatile ulong )0x04020000) >> 16) & 0xF)
	153
	154	static uchar *key_match (ulong);
	155
	156	int misc_init_r (void)
	157	{
	158	ulong kbd_data = KBD_DATA;
	159	uchar keybd_env[KEYBD_KEY_NUM + 1];
	160	uchar *str;
	161	int i;
	162
	163	for (i = 0; i < KEYBD_KEY_NUM; ++i) {
	164	keybd_env[i] = '0' + ((kbd_data >> i) & 1);
	165	}
	166	keybd_env[i] = '\0';
	167	debug ("** Setting keybd=\"%s\"\n", keybd_env);
	168	setenv ("keybd", keybd_env);
	169
	170	str = strdup (key_match (kbd_data)); /* decode keys */
	171
	172	#ifdef CONFIG_PREBOOT /* automatically configure "preboot" command on key match */
	173	debug ("** Setting preboot=\"%s\"\n", str);
	174	setenv ("preboot", str); /* set or delete definition */
	175	#endif /* CONFIG_PREBOOT */
	176	if (str != NULL) {
	177	free (str);
	178	}
	179
1cb8e980 WD	180	#ifdef CFG_BRIGHTNESS
	181	tsc2000_set_brightness();
	182	#endif
c609719b WD	183	return (0);
	184	}
	185
	186	#ifdef CONFIG_PREBOOT
	187
	188	static uchar kbd_magic_prefix[] = "key_magic";
	189	static uchar kbd_command_prefix[] = "key_cmd";
	190
	191	static int compare_magic (ulong kbd_data, uchar *str)
	192	{
	193	uchar key_mask;
	194
	195	debug ("compare_magic: kbd: %04lx str: \"%s\"\n",kbd_data,str);
	196	for (; *str; str++)
	197	{
	198	uchar c = *str - '1';
	199
	200	if (c >= KEYBD_KEY_NUM) /* bad key number */
	201	return -1;
	202
	203	key_mask = 1 << c;
	204
	205	if (!(kbd_data & key_mask)) { /* key not pressed */
	206	debug ( "compare_magic: "
	207	"kbd: %04lx mask: %04lx - key not pressed\n",
	208	kbd_data, key_mask );
	209	return -1;
	210	}
	211
	212	kbd_data &= ~key_mask;
	213	}
	214
	215	if (kbd_data) { /* key(s) not released */
	216	debug ( "compare_magic: "
	217	"kbd: %04lx - key(s) not released\n", kbd_data);
	218	return -1;
	219	}
	220
	221	return 0;
	222	}
	223
	224	/*-----------------------------------------------------------------------
	225	* Check if pressed key(s) match magic sequence,
	226	* and return the command string associated with that key(s).
	227	*
	228	* If no key press was decoded, NULL is returned.
	229	*
	230	* Note: the first character of the argument will be overwritten with
	231	* the "magic charcter code" of the decoded key(s), or '\0'.
	232	*
	233	*
	234	* Note: the string points to static environment data and must be
	235	* saved before you call any function that modifies the environment.
	236	*/
	237	static uchar *key_match (ulong kbd_data)
	238	{
	239	uchar magic[sizeof (kbd_magic_prefix) + 1];
	240	uchar cmd_name[sizeof (kbd_command_prefix) + 1];
	241	uchar *suffix;
	242	uchar *kbd_magic_keys;
	243
	244	/*
	245	* The following string defines the characters that can pe appended
	246	* to "key_magic" to form the names of environment variables that
247	* hold "magic" key codes, i. e. such key codes that can cause
248	* pre-boot actions. If the string is empty (""), then only
249	* "key_magic" is checked (old behaviour); the string "125" causes
250	* checks for "key_magic1", "key_magic2" and "key_magic5", etc.
251	*/
252	if ((kbd_magic_keys = getenv ("magic_keys")) == NULL)
253	kbd_magic_keys = "";
254
255	debug ("key_match: magic_keys=\"%s\"\n", kbd_magic_keys);
256
257	/* loop over all magic keys;
258	* use '\0' suffix in case of empty string
259	*/
260	for (suffix=kbd_magic_keys; *suffix \|\| suffix==kbd_magic_keys; ++suffix)
261	{
262	sprintf (magic, "%s%c", kbd_magic_prefix, *suffix);
263
264	debug ("key_match: magic=\"%s\"\n",
265	getenv(magic) ? getenv(magic) : "<UNDEFINED>");
266
267	if (compare_magic(kbd_data, getenv(magic)) == 0)
268	{
269	sprintf (cmd_name, "%s%c", kbd_command_prefix, *suffix);
270	debug ("key_match: cmdname %s=\"%s\"\n",
271	cmd_name,
272	getenv (cmd_name) ?
273	getenv (cmd_name) :
274	"<UNDEFINED>");
275	return (getenv (cmd_name));
276	}
277	}
278	debug ("key_match: no match\n");
279	return (NULL);
280	}
281	#endif /* CONFIG_PREBOOT */
282
283	/* Read Keyboard status */
284	int do_kbd (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
285	{
286	ulong kbd_data = KBD_DATA;
287	uchar keybd_env[KEYBD_KEY_NUM + 1];
288	int i;
289
290	puts ("Keys:");
291	for (i = 0; i < KEYBD_KEY_NUM; ++i) {
292	keybd_env[i] = '0' + ((kbd_data >> i) & 1);
293	printf (" %c", keybd_env[i]);
294	}
295	keybd_env[i] = '\0';
296	putc ('\n');
297	setenv ("keybd", keybd_env);
298	return 0;
299	}
300
8bde7f77 WD	301	cmd_tbl_t U_BOOT_CMD(kbd) = MK_CMD_ENTRY(
	302	"kbd", 1, 1, do_kbd,
	303	"kbd - read keyboard status\n",
	304	NULL
	305	);
	306
c609719b WD	307	#ifdef CONFIG_MODEM_SUPPORT
	308	static int key_pressed(void)
	309	{
	310	return (compare_magic(KBD_DATA, CONFIG_MODEM_KEY_MAGIC) == 0);
	311	}
	312	#endif /* CONFIG_MODEM_SUPPORT */
1cb8e980 WD	313
	314	#ifdef CFG_BRIGHTNESS
	315
48b42616 WD	316	static inline void SET_CS_TOUCH(void)
	317	{
	318	S3C24X0_GPIO * const gpio = S3C24X0_GetBase_GPIO();
	319
	320	gpio->PDDAT &= 0x5FF;
	321	}
	322
	323	static inline void CLR_CS_TOUCH(void)
	324	{
	325	S3C24X0_GPIO * const gpio = S3C24X0_GetBase_GPIO();
	326
	327	gpio->PDDAT \|= 0x200;
	328	}
1cb8e980 WD	329
	330	static void spi_init(void)
	331	{
48b42616 WD	332	S3C24X0_GPIO * const gpio = S3C24X0_GetBase_GPIO();
48b42616 WD	333	S3C24X0_SPI * const spi = S3C24X0_GetBase_SPI();
1cb8e980 WD	334	int i;
	335
	336	/* Configure I/O ports. */
48b42616 WD	337	gpio->PDCON = (gpio->PDCON & 0xF3FFFF) \| 0x040000;
	338	gpio->PGCON = (gpio->PGCON & 0x0F3FFF) \| 0x008000;
	339	gpio->PGCON = (gpio->PGCON & 0x0CFFFF) \| 0x020000;
	340	gpio->PGCON = (gpio->PGCON & 0x03FFFF) \| 0x080000;
1cb8e980	341
48b42616	342	CLR_CS_TOUCH();
1cb8e980	343
48b42616 WD	344	spi->ch[0].SPPRE = 0x1F; /* Baudrate ca. 514kHz */
	345	spi->ch[0].SPPIN = 0x01; /* SPI-MOSI holds Level after last bit */
	346	spi->ch[0].SPCON = 0x1A; /* Polling, Prescaler, Master, CPOL=0, CPHA=1 */
1cb8e980 WD	347
	348	/* Dummy byte ensures clock to be low. */
	349	for (i = 0; i < 10; i++) {
48b42616	350	spi->ch[0].SPTDAT = 0xFF;
1cb8e980	351	}
82226bf4	352	wait_transmit_done();
1cb8e980 WD	353	}
	354
	355	static void wait_transmit_done(void)
	356	{
48b42616 WD	357	S3C24X0_SPI * const spi = S3C24X0_GetBase_SPI();
	358
	359	while (!(spi->ch[0].SPSTA & 0x01)); /* wait until transfer is done */
1cb8e980 WD	360	}
1cb8e980 WD	361
82226bf4	362	static void tsc2000_write(unsigned int page, unsigned int reg,
1cb8e980 WD	363	unsigned int data)
1cb8e980 WD	364	{
48b42616	365	S3C24X0_SPI * const spi = S3C24X0_GetBase_SPI();
1cb8e980 WD	366	unsigned int command;
1cb8e980 WD	367
48b42616	368	SET_CS_TOUCH();
1cb8e980 WD	369	command = 0x0000;
	370	command \|= (page << 11);
	371	command \|= (reg << 5);
	372
48b42616	373	spi->ch[0].SPTDAT = (command & 0xFF00) >> 8;
1cb8e980	374	wait_transmit_done();
48b42616	375	spi->ch[0].SPTDAT = (command & 0x00FF);
1cb8e980	376	wait_transmit_done();
48b42616	377	spi->ch[0].SPTDAT = (data & 0xFF00) >> 8;
1cb8e980	378	wait_transmit_done();
48b42616	379	spi->ch[0].SPTDAT = (data & 0x00FF);
1cb8e980 WD	380	wait_transmit_done();
1cb8e980 WD	381
48b42616	382	CLR_CS_TOUCH();
1cb8e980 WD	383	}
	384
	385	static void tsc2000_set_brightness(void)
	386	{
	387	uchar tmp[10];
	388	int i, br;
	389
	390	spi_init();
	391	tsc2000_write(1, 2, 0x0); /* Power up DAC */
	392
	393	i = getenv_r("brightness", tmp, sizeof(tmp));
	394	br = (i > 0)
	395	? (int) simple_strtoul (tmp, NULL, 10)
	396	: CFG_BRIGHTNESS;
	397
	398	tsc2000_write(0, 0xb, br & 0xff);
	399	}
	400	#endif