7179380ee9
Not every alchemy-based board might want these options forced on it, and most of this stuff seems to be intended for devboard code anyway. Remove commandline mangling code out of common chip code and instead add relevant sections to all in-tree boards to not change existing behaviour. Signed-off-by: Manuel Lauss <mano@roarinelk.homelinux.net> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
169 lines
4.2 KiB
C
169 lines
4.2 KiB
C
/*
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*
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* BRIEF MODULE DESCRIPTION
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* Alchemy Pb1200/Db1200 board setup.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
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* NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <linux/init.h>
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#include <linux/sched.h>
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#include <prom.h>
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#include <au1xxx.h>
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extern void _board_init_irq(void);
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extern void (*board_init_irq)(void);
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const char *get_system_type(void)
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{
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return "Alchemy Pb1200";
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}
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void board_reset(void)
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{
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bcsr->resets = 0;
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bcsr->system = 0;
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}
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void __init board_setup(void)
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{
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char *argptr;
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argptr = prom_getcmdline();
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#ifdef CONFIG_SERIAL_8250_CONSOLE
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argptr = strstr(argptr, "console=");
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if (argptr == NULL) {
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argptr = prom_getcmdline();
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strcat(argptr, " console=ttyS0,115200");
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}
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#endif
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#ifdef CONFIG_FB_AU1200
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strcat(argptr, " video=au1200fb:panel:bs");
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#endif
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#if 0
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{
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u32 pin_func;
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/*
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* Enable PSC1 SYNC for AC97. Normaly done in audio driver,
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* but it is board specific code, so put it here.
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*/
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pin_func = au_readl(SYS_PINFUNC);
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au_sync();
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pin_func |= SYS_PF_MUST_BE_SET | SYS_PF_PSC1_S1;
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au_writel(pin_func, SYS_PINFUNC);
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au_writel(0, (u32)bcsr | 0x10); /* turn off PCMCIA power */
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au_sync();
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}
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#endif
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#if defined(CONFIG_I2C_AU1550)
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{
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u32 freq0, clksrc;
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u32 pin_func;
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/* Select SMBus in CPLD */
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bcsr->resets &= ~BCSR_RESETS_PCS0MUX;
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pin_func = au_readl(SYS_PINFUNC);
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au_sync();
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pin_func &= ~(SYS_PINFUNC_P0A | SYS_PINFUNC_P0B);
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/* Set GPIOs correctly */
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pin_func |= 2 << 17;
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au_writel(pin_func, SYS_PINFUNC);
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au_sync();
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/* The I2C driver depends on 50 MHz clock */
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freq0 = au_readl(SYS_FREQCTRL0);
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au_sync();
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freq0 &= ~(SYS_FC_FRDIV1_MASK | SYS_FC_FS1 | SYS_FC_FE1);
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freq0 |= 3 << SYS_FC_FRDIV1_BIT;
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/* 396 MHz / (3 + 1) * 2 == 49.5 MHz */
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au_writel(freq0, SYS_FREQCTRL0);
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au_sync();
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freq0 |= SYS_FC_FE1;
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au_writel(freq0, SYS_FREQCTRL0);
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au_sync();
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clksrc = au_readl(SYS_CLKSRC);
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au_sync();
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clksrc &= ~(SYS_CS_CE0 | SYS_CS_DE0 | SYS_CS_ME0_MASK);
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/* Bit 22 is EXTCLK0 for PSC0 */
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clksrc |= SYS_CS_MUX_FQ1 << SYS_CS_ME0_BIT;
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au_writel(clksrc, SYS_CLKSRC);
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au_sync();
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}
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#endif
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/*
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* The Pb1200 development board uses external MUX for PSC0 to
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* support SMB/SPI. bcsr->resets bit 12: 0=SMB 1=SPI
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*/
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#ifdef CONFIG_I2C_AU1550
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bcsr->resets &= ~BCSR_RESETS_PCS0MUX;
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#endif
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au_sync();
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#ifdef CONFIG_MIPS_PB1200
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printk(KERN_INFO "AMD Alchemy Pb1200 Board\n");
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#endif
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#ifdef CONFIG_MIPS_DB1200
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printk(KERN_INFO "AMD Alchemy Db1200 Board\n");
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#endif
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/* Setup Pb1200 External Interrupt Controller */
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board_init_irq = _board_init_irq;
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}
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int board_au1200fb_panel(void)
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{
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BCSR *bcsr = (BCSR *)BCSR_KSEG1_ADDR;
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int p;
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p = bcsr->switches;
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p >>= 8;
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p &= 0x0F;
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return p;
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}
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int board_au1200fb_panel_init(void)
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{
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/* Apply power */
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BCSR *bcsr = (BCSR *)BCSR_KSEG1_ADDR;
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bcsr->board |= BCSR_BOARD_LCDVEE | BCSR_BOARD_LCDVDD | BCSR_BOARD_LCDBL;
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/* printk(KERN_DEBUG "board_au1200fb_panel_init()\n"); */
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return 0;
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}
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int board_au1200fb_panel_shutdown(void)
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{
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/* Remove power */
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BCSR *bcsr = (BCSR *)BCSR_KSEG1_ADDR;
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bcsr->board &= ~(BCSR_BOARD_LCDVEE | BCSR_BOARD_LCDVDD |
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BCSR_BOARD_LCDBL);
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/* printk(KERN_DEBUG "board_au1200fb_panel_shutdown()\n"); */
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return 0;
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}
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