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/*
*
* BRIEF MODULE DESCRIPTION
* Alchemy Pb1200/Db1200 board setup.
*
* 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 SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
* NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* 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.,
* 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <linux/init.h>
#include <linux/sched.h>
#include <prom.h>
#include <au1xxx.h>
const char *get_system_type(void)
{
return "Alchemy Pb1200";
}
void board_reset(void)
{
bcsr->resets = 0;
bcsr->system = 0;
}
void __init board_setup(void)
{
char *argptr;
argptr = prom_getcmdline();
#ifdef CONFIG_SERIAL_8250_CONSOLE
argptr = strstr(argptr, "console=");
if (argptr == NULL) {
argptr = prom_getcmdline();
strcat(argptr, " console=ttyS0,115200");
}
#endif
#ifdef CONFIG_FB_AU1200
strcat(argptr, " video=au1200fb:panel:bs");
#endif
#if 0
{
u32 pin_func;
/*
* Enable PSC1 SYNC for AC97. Normaly done in audio driver,
* but it is board specific code, so put it here.
*/
pin_func = au_readl(SYS_PINFUNC);
au_sync();
pin_func |= SYS_PF_MUST_BE_SET | SYS_PF_PSC1_S1;
au_writel(pin_func, SYS_PINFUNC);
au_writel(0, (u32)bcsr | 0x10); /* turn off PCMCIA power */
au_sync();
}
#endif
#if defined(CONFIG_I2C_AU1550)
{
u32 freq0, clksrc;
u32 pin_func;
/* Select SMBus in CPLD */
bcsr->resets &= ~BCSR_RESETS_PCS0MUX;
pin_func = au_readl(SYS_PINFUNC);
au_sync();
pin_func &= ~(SYS_PINFUNC_P0A | SYS_PINFUNC_P0B);
/* Set GPIOs correctly */
pin_func |= 2 << 17;
au_writel(pin_func, SYS_PINFUNC);
au_sync();
/* The I2C driver depends on 50 MHz clock */
freq0 = au_readl(SYS_FREQCTRL0);
au_sync();
freq0 &= ~(SYS_FC_FRDIV1_MASK | SYS_FC_FS1 | SYS_FC_FE1);
freq0 |= 3 << SYS_FC_FRDIV1_BIT;
/* 396 MHz / (3 + 1) * 2 == 49.5 MHz */
au_writel(freq0, SYS_FREQCTRL0);
au_sync();
freq0 |= SYS_FC_FE1;
au_writel(freq0, SYS_FREQCTRL0);
au_sync();
clksrc = au_readl(SYS_CLKSRC);
au_sync();
clksrc &= ~(SYS_CS_CE0 | SYS_CS_DE0 | SYS_CS_ME0_MASK);
/* Bit 22 is EXTCLK0 for PSC0 */
clksrc |= SYS_CS_MUX_FQ1 << SYS_CS_ME0_BIT;
au_writel(clksrc, SYS_CLKSRC);
au_sync();
}
#endif
/*
* The Pb1200 development board uses external MUX for PSC0 to
* support SMB/SPI. bcsr->resets bit 12: 0=SMB 1=SPI
*/
#ifdef CONFIG_I2C_AU1550
bcsr->resets &= ~BCSR_RESETS_PCS0MUX;
#endif
au_sync();
#ifdef CONFIG_MIPS_PB1200
printk(KERN_INFO "AMD Alchemy Pb1200 Board\n");
#endif
#ifdef CONFIG_MIPS_DB1200
printk(KERN_INFO "AMD Alchemy Db1200 Board\n");
#endif
}
int board_au1200fb_panel(void)
{
BCSR *bcsr = (BCSR *)BCSR_KSEG1_ADDR;
int p;
p = bcsr->switches;
p >>= 8;
p &= 0x0F;
return p;
}
int board_au1200fb_panel_init(void)
{
/* Apply power */
BCSR *bcsr = (BCSR *)BCSR_KSEG1_ADDR;
bcsr->board |= BCSR_BOARD_LCDVEE | BCSR_BOARD_LCDVDD | BCSR_BOARD_LCDBL;
/* printk(KERN_DEBUG "board_au1200fb_panel_init()\n"); */
return 0;
}
int board_au1200fb_panel_shutdown(void)
{
/* Remove power */
BCSR *bcsr = (BCSR *)BCSR_KSEG1_ADDR;
bcsr->board &= ~(BCSR_BOARD_LCDVEE | BCSR_BOARD_LCDVDD |
BCSR_BOARD_LCDBL);
/* printk(KERN_DEBUG "board_au1200fb_panel_shutdown()\n"); */
return 0;
}
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