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https://github.com/brain-hackers/u-boot-brain
synced 2024-08-25 11:28:51 +09:00
![kevin.morfitt@fearnside-systems.co.uk](/assets/img/avatar_default.png)
This patch re-formats the arm920t s3c24x0 driver files, excluding the nand driver, in preparation for changes to add support for the Embest SBC2440-II Board. The changes are as follows: - re-indent the code using Lindent - make sure register layouts are defined using a C struct - replace the upper-case typedef'ed C struct names with lower case non-typedef'ed ones - make sure registers are accessed using the proper accessor functions - run checkpatch.pl and fix any error reports It assumes the following patch has been applied first: - [U-Boot][PATCH-ARM] CONFIG_SYS_HZ fix for ARM902T S3C24X0 Boards, 05/09/2009 - patches 1/4 and 2/4 of this series Tested on an Embest SBC2440-II Board with local u-boot patches as I don't have any s3c2400 or s3c2410 boards but need this patch applying before I can submit patches for the SBC2440-II Board. Also, temporarily modified sbc2410x, smdk2400, smdk2410 and trab configs to use the mtd nand driver (which isn't used by any board at the moment), ran MAKEALL for all ARM9 targets and no new warnings or errors were found. Signed-off-by: Kevin Morfitt <kevin.morfitt@fearnside-systems.co.uk> Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
436 lines
11 KiB
C
436 lines
11 KiB
C
/*
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* (C) Copyright 2002
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* Gary Jennejohn, DENX Software Engineering, <garyj@denx.de>
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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/* #define DEBUG */
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#include <common.h>
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#include <netdev.h>
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#include <malloc.h>
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#include <s3c2400.h>
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#include <command.h>
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DECLARE_GLOBAL_DATA_PTR;
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#ifdef CONFIG_SYS_BRIGHTNESS
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static void spi_init(void);
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static void wait_transmit_done(void);
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static void tsc2000_write(unsigned int page, unsigned int reg,
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unsigned int data);
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static void tsc2000_set_brightness(void);
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#endif
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#ifdef CONFIG_MODEM_SUPPORT
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static int key_pressed(void);
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extern void disable_putc(void);
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extern int do_mdm_init; /* defined in common/main.c */
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/*
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* We need a delay of at least 500 us after turning on the VFD clock
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* before we can read any useful information for the CPLD controlling
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* the keyboard switches. Let's play safe and wait 5 ms. The problem
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* is that timers are not available yet, so we use a manually timed
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* loop.
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*/
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#define KBD_MDELAY 5000
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static void udelay_no_timer (int usec)
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{
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int i;
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int delay = usec * 3;
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for (i = 0; i < delay; i ++) gd->bd->bi_arch_number = MACH_TYPE_TRAB;
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}
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#endif /* CONFIG_MODEM_SUPPORT */
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/*
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* Miscellaneous platform dependent initialisations
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*/
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int board_init ()
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{
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#if defined(CONFIG_VFD)
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extern int vfd_init_clocks(void);
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#endif
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struct s3c24x0_clock_power * const clk_power =
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s3c24x0_get_base_clock_power();
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struct s3c24x0_gpio * const gpio = s3c24x0_get_base_gpio();
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/* memory and cpu-speed are setup before relocation */
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#ifdef CONFIG_TRAB_50MHZ
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/* change the clock to be 50 MHz 1:1:1 */
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/* MDIV:0x5c PDIV:4 SDIV:2 */
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clk_power->MPLLCON = 0x5c042;
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clk_power->CLKDIVN = 0;
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#else
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/* change the clock to be 133 MHz 1:2:4 */
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/* MDIV:0x7d PDIV:4 SDIV:1 */
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clk_power->MPLLCON = 0x7d041;
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clk_power->CLKDIVN = 3;
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#endif
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/* set up the I/O ports */
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gpio->PACON = 0x3ffff;
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gpio->PBCON = 0xaaaaaaaa;
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gpio->PBUP = 0xffff;
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/* INPUT nCTS0 nRTS0 TXD[1] TXD[0] RXD[1] RXD[0] */
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/* 00, 10, 10, 10, 10, 10, 10 */
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gpio->PFCON = (2<<0) | (2<<2) | (2<<4) | (2<<6) | (2<<8) | (2<<10);
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#ifdef CONFIG_HWFLOW
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/* do not pull up RXD0, RXD1, TXD0, TXD1, CTS0, RTS0 */
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gpio->PFUP = (1<<0) | (1<<1) | (1<<2) | (1<<3) | (1<<4) | (1<<5);
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#else
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/* do not pull up RXD0, RXD1, TXD0, TXD1 */
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gpio->PFUP = (1<<0) | (1<<1) | (1<<2) | (1<<3);
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#endif
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gpio->PGCON = 0x0;
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gpio->PGUP = 0x0;
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gpio->OPENCR= 0x0;
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/* suppress flicker of the VFDs */
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gpio->MISCCR = 0x40;
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gpio->PFCON |= (2<<12);
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gd->bd->bi_arch_number = MACH_TYPE_TRAB;
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/* adress of boot parameters */
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gd->bd->bi_boot_params = 0x0c000100;
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/* Make sure both buzzers are turned off */
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gpio->PDCON |= 0x5400;
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gpio->PDDAT &= ~0xE0;
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#ifdef CONFIG_VFD
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vfd_init_clocks();
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#endif /* CONFIG_VFD */
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#ifdef CONFIG_MODEM_SUPPORT
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udelay_no_timer (KBD_MDELAY);
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if (key_pressed()) {
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disable_putc(); /* modem doesn't understand banner etc */
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do_mdm_init = 1;
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}
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#endif /* CONFIG_MODEM_SUPPORT */
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#ifdef CONFIG_DRIVER_S3C24X0_I2C
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/* Configure I/O ports PG5 und PG6 for I2C */
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gpio->PGCON = (gpio->PGCON & 0x003c00) | 0x003c00;
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#endif /* CONFIG_DRIVER_S3C24X0_I2C */
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return 0;
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}
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int dram_init (void)
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{
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gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
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gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE;
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return 0;
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}
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/*-----------------------------------------------------------------------
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* Keyboard Controller
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*/
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/* Maximum key number */
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#define KEYBD_KEY_NUM 4
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#define KBD_DATA (((*(volatile ulong *)0x04020000) >> 16) & 0xF)
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static char *key_match (ulong);
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int misc_init_r (void)
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{
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ulong kbd_data = KBD_DATA;
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char *str;
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char keybd_env[KEYBD_KEY_NUM + 1];
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int i;
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#ifdef CONFIG_VERSION_VARIABLE
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{
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/* Set version variable. Please note, that this variable is
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* also set in main_loop() later in the boot process. The
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* version variable has to be set this early, because so it
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* could be used in script files on an usb stick, which
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* might be called during do_auto_update() */
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extern char version_string[];
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setenv ("ver", version_string);
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}
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#endif /* CONFIG_VERSION_VARIABLE */
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#ifdef CONFIG_AUTO_UPDATE
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{
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extern int do_auto_update(void);
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/* this has priority over all else */
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do_auto_update();
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}
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#endif
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for (i = 0; i < KEYBD_KEY_NUM; ++i) {
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keybd_env[i] = '0' + ((kbd_data >> i) & 1);
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}
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keybd_env[i] = '\0';
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debug ("** Setting keybd=\"%s\"\n", keybd_env);
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setenv ("keybd", keybd_env);
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str = strdup (key_match (kbd_data)); /* decode keys */
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#ifdef CONFIG_PREBOOT /* automatically configure "preboot" command on key match */
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debug ("** Setting preboot=\"%s\"\n", str);
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setenv ("preboot", str); /* set or delete definition */
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#endif /* CONFIG_PREBOOT */
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if (str != NULL) {
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free (str);
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}
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#ifdef CONFIG_SYS_BRIGHTNESS
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tsc2000_set_brightness();
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#endif
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return (0);
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}
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#ifdef CONFIG_PREBOOT
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static uchar kbd_magic_prefix[] = "key_magic";
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static uchar kbd_command_prefix[] = "key_cmd";
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static int compare_magic (ulong kbd_data, char *str)
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{
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uchar key_mask;
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debug ("compare_magic: kbd: %04lx str: \"%s\"\n",kbd_data,str);
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for (; *str; str++)
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{
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uchar c = *str - '1';
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if (c >= KEYBD_KEY_NUM) /* bad key number */
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return -1;
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key_mask = 1 << c;
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if (!(kbd_data & key_mask)) { /* key not pressed */
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debug ( "compare_magic: "
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"kbd: %04lx mask: %04lx - key not pressed\n",
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kbd_data, key_mask );
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return -1;
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}
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kbd_data &= ~key_mask;
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}
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if (kbd_data) { /* key(s) not released */
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debug ( "compare_magic: "
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"kbd: %04lx - key(s) not released\n", kbd_data);
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return -1;
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}
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return 0;
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}
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/*-----------------------------------------------------------------------
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* Check if pressed key(s) match magic sequence,
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* and return the command string associated with that key(s).
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*
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* If no key press was decoded, NULL is returned.
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*
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* Note: the first character of the argument will be overwritten with
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* the "magic charcter code" of the decoded key(s), or '\0'.
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*
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*
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* Note: the string points to static environment data and must be
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* saved before you call any function that modifies the environment.
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*/
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static char *key_match (ulong kbd_data)
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{
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char magic[sizeof (kbd_magic_prefix) + 1];
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char cmd_name[sizeof (kbd_command_prefix) + 1];
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char *suffix;
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char *kbd_magic_keys;
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/*
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* The following string defines the characters that can pe appended
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* to "key_magic" to form the names of environment variables that
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* hold "magic" key codes, i. e. such key codes that can cause
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* pre-boot actions. If the string is empty (""), then only
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* "key_magic" is checked (old behaviour); the string "125" causes
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* checks for "key_magic1", "key_magic2" and "key_magic5", etc.
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*/
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if ((kbd_magic_keys = getenv ("magic_keys")) == NULL)
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kbd_magic_keys = "";
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debug ("key_match: magic_keys=\"%s\"\n", kbd_magic_keys);
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/* loop over all magic keys;
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* use '\0' suffix in case of empty string
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*/
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for (suffix=kbd_magic_keys; *suffix || suffix==kbd_magic_keys; ++suffix)
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{
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sprintf (magic, "%s%c", kbd_magic_prefix, *suffix);
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debug ("key_match: magic=\"%s\"\n",
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getenv(magic) ? getenv(magic) : "<UNDEFINED>");
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if (compare_magic(kbd_data, getenv(magic)) == 0)
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{
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sprintf (cmd_name, "%s%c", kbd_command_prefix, *suffix);
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debug ("key_match: cmdname %s=\"%s\"\n",
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cmd_name,
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getenv (cmd_name) ?
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getenv (cmd_name) :
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"<UNDEFINED>");
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return (getenv (cmd_name));
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}
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}
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debug ("key_match: no match\n");
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return (NULL);
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}
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#endif /* CONFIG_PREBOOT */
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/* Read Keyboard status */
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int do_kbd (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
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{
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ulong kbd_data = KBD_DATA;
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char keybd_env[KEYBD_KEY_NUM + 1];
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int i;
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puts ("Keys:");
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for (i = 0; i < KEYBD_KEY_NUM; ++i) {
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keybd_env[i] = '0' + ((kbd_data >> i) & 1);
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printf (" %c", keybd_env[i]);
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}
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keybd_env[i] = '\0';
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putc ('\n');
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setenv ("keybd", keybd_env);
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return 0;
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}
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U_BOOT_CMD(
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kbd, 1, 1, do_kbd,
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"read keyboard status",
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""
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);
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#ifdef CONFIG_MODEM_SUPPORT
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static int key_pressed(void)
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{
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return (compare_magic(KBD_DATA, CONFIG_MODEM_KEY_MAGIC) == 0);
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}
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#endif /* CONFIG_MODEM_SUPPORT */
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#ifdef CONFIG_SYS_BRIGHTNESS
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static inline void SET_CS_TOUCH(void)
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{
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struct s3c24x0_gpio * const gpio = s3c24x0_get_base_gpio();
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gpio->PDDAT &= 0x5FF;
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}
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static inline void CLR_CS_TOUCH(void)
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{
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struct s3c24x0_gpio * const gpio = s3c24x0_get_base_gpio();
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gpio->PDDAT |= 0x200;
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}
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static void spi_init(void)
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{
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struct s3c24x0_gpio * const gpio = s3c24x0_get_base_gpio();
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struct s3c24x0_spi * const spi = s3c24x0_get_base_spi();
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int i;
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/* Configure I/O ports. */
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gpio->PDCON = (gpio->PDCON & 0xF3FFFF) | 0x040000;
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gpio->PGCON = (gpio->PGCON & 0x0F3FFF) | 0x008000;
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gpio->PGCON = (gpio->PGCON & 0x0CFFFF) | 0x020000;
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gpio->PGCON = (gpio->PGCON & 0x03FFFF) | 0x080000;
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CLR_CS_TOUCH();
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spi->ch[0].SPPRE = 0x1F; /* Baudrate ca. 514kHz */
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spi->ch[0].SPPIN = 0x01; /* SPI-MOSI holds Level after last bit */
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spi->ch[0].SPCON = 0x1A; /* Polling, Prescaler, Master, CPOL=0, CPHA=1 */
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/* Dummy byte ensures clock to be low. */
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for (i = 0; i < 10; i++) {
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spi->ch[0].SPTDAT = 0xFF;
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}
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wait_transmit_done();
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}
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static void wait_transmit_done(void)
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{
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struct s3c24x0_spi * const spi = s3c24x0_get_base_spi();
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while (!(spi->ch[0].SPSTA & 0x01)); /* wait until transfer is done */
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}
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static void tsc2000_write(unsigned int page, unsigned int reg,
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unsigned int data)
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{
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struct s3c24x0_spi * const spi = s3c24x0_get_base_spi();
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unsigned int command;
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SET_CS_TOUCH();
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command = 0x0000;
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command |= (page << 11);
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command |= (reg << 5);
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spi->ch[0].SPTDAT = (command & 0xFF00) >> 8;
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wait_transmit_done();
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spi->ch[0].SPTDAT = (command & 0x00FF);
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wait_transmit_done();
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spi->ch[0].SPTDAT = (data & 0xFF00) >> 8;
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wait_transmit_done();
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spi->ch[0].SPTDAT = (data & 0x00FF);
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wait_transmit_done();
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CLR_CS_TOUCH();
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}
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static void tsc2000_set_brightness(void)
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{
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char tmp[10];
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int i, br;
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spi_init();
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tsc2000_write(1, 2, 0x0); /* Power up DAC */
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i = getenv_r("brightness", tmp, sizeof(tmp));
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br = (i > 0)
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? (int) simple_strtoul (tmp, NULL, 10)
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: CONFIG_SYS_BRIGHTNESS;
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tsc2000_write(0, 0xb, br & 0xff);
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}
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#endif
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#ifdef CONFIG_CMD_NET
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int board_eth_init(bd_t *bis)
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{
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int rc = 0;
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#ifdef CONFIG_CS8900
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rc = cs8900_initialize(0, CONFIG_CS8900_BASE);
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#endif
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return rc;
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}
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#endif
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