diff options
Diffstat (limited to 'arch/mips/alchemy/pb1200/board_setup.c')
| -rw-r--r-- | arch/mips/alchemy/pb1200/board_setup.c | 162 |
1 files changed, 162 insertions, 0 deletions
diff --git a/arch/mips/alchemy/pb1200/board_setup.c b/arch/mips/alchemy/pb1200/board_setup.c new file mode 100644 index 000000000000..6cb2115059ad --- /dev/null +++ b/arch/mips/alchemy/pb1200/board_setup.c @@ -0,0 +1,162 @@ +/* + * + * 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> + +extern void _board_init_irq(void); +extern void (*board_init_irq)(void); + +void board_reset(void) +{ + bcsr->resets = 0; + bcsr->system = 0; +} + +void __init board_setup(void) +{ + char *argptr = NULL; + +#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 + +#ifdef CONFIG_FB_AU1200 + argptr = prom_getcmdline(); +#ifdef CONFIG_MIPS_PB1200 + strcat(argptr, " video=au1200fb:panel:bs"); +#endif +#ifdef CONFIG_MIPS_DB1200 + strcat(argptr, " video=au1200fb:panel:bs"); +#endif +#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 + + /* Setup Pb1200 External Interrupt Controller */ + board_init_irq = _board_init_irq; +} + +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; +} |