diff options
Diffstat (limited to 'arch/mips/alchemy/devboards/db1200/setup.c')
| -rw-r--r-- | arch/mips/alchemy/devboards/db1200/setup.c | 118 |
1 files changed, 0 insertions, 118 deletions
diff --git a/arch/mips/alchemy/devboards/db1200/setup.c b/arch/mips/alchemy/devboards/db1200/setup.c deleted file mode 100644 index 379536e3abd..00000000000 --- a/arch/mips/alchemy/devboards/db1200/setup.c +++ /dev/null @@ -1,118 +0,0 @@ -/* - * Alchemy/AMD/RMI DB1200 board setup. - * - * Licensed under the terms outlined in the file COPYING in the root of - * this source archive. - */ - -#include <linux/init.h> -#include <linux/interrupt.h> -#include <linux/io.h> -#include <linux/kernel.h> -#include <asm/mach-au1x00/au1000.h> -#include <asm/mach-db1x00/bcsr.h> -#include <asm/mach-db1x00/db1200.h> - -const char *get_system_type(void) -{ - return "Alchemy Db1200"; -} - -void __init board_setup(void) -{ - unsigned long freq0, clksrc, div, pfc; - unsigned short whoami; - - bcsr_init(DB1200_BCSR_PHYS_ADDR, - DB1200_BCSR_PHYS_ADDR + DB1200_BCSR_HEXLED_OFS); - - whoami = bcsr_read(BCSR_WHOAMI); - printk(KERN_INFO "Alchemy/AMD/RMI DB1200 Board, CPLD Rev %d" - " Board-ID %d Daughtercard ID %d\n", - (whoami >> 4) & 0xf, (whoami >> 8) & 0xf, whoami & 0xf); - - /* SMBus/SPI on PSC0, Audio on PSC1 */ - pfc = __raw_readl((void __iomem *)SYS_PINFUNC); - pfc &= ~(SYS_PINFUNC_P0A | SYS_PINFUNC_P0B); - pfc &= ~(SYS_PINFUNC_P1A | SYS_PINFUNC_P1B | SYS_PINFUNC_FS3); - pfc |= SYS_PINFUNC_P1C; /* SPI is configured later */ - __raw_writel(pfc, (void __iomem *)SYS_PINFUNC); - wmb(); - - /* Clock configurations: PSC0: ~50MHz via Clkgen0, derived from - * CPU clock; all other clock generators off/unused. - */ - div = (get_au1x00_speed() + 25000000) / 50000000; - if (div & 1) - div++; - div = ((div >> 1) - 1) & 0xff; - - freq0 = div << SYS_FC_FRDIV0_BIT; - __raw_writel(freq0, (void __iomem *)SYS_FREQCTRL0); - wmb(); - freq0 |= SYS_FC_FE0; /* enable F0 */ - __raw_writel(freq0, (void __iomem *)SYS_FREQCTRL0); - wmb(); - - /* psc0_intclk comes 1:1 from F0 */ - clksrc = SYS_CS_MUX_FQ0 << SYS_CS_ME0_BIT; - __raw_writel(clksrc, (void __iomem *)SYS_CLKSRC); - wmb(); -} - -/* use the hexleds to count the number of times the cpu has entered - * wait, the dots to indicate whether the CPU is currently idle or - * active (dots off = sleeping, dots on = working) for cases where - * the number doesn't change for a long(er) period of time. - */ -static void db1200_wait(void) -{ - __asm__(" .set push \n" - " .set mips3 \n" - " .set noreorder \n" - " cache 0x14, 0(%0) \n" - " cache 0x14, 32(%0) \n" - " cache 0x14, 64(%0) \n" - /* dots off: we're about to call wait */ - " lui $26, 0xb980 \n" - " ori $27, $0, 3 \n" - " sb $27, 0x18($26) \n" - " sync \n" - " nop \n" - " wait \n" - " nop \n" - " nop \n" - " nop \n" - " nop \n" - " nop \n" - /* dots on: there's work to do, increment cntr */ - " lui $26, 0xb980 \n" - " sb $0, 0x18($26) \n" - " lui $26, 0xb9c0 \n" - " lb $27, 0($26) \n" - " addiu $27, $27, 1 \n" - " sb $27, 0($26) \n" - " sync \n" - " .set pop \n" - : : "r" (db1200_wait)); -} - -static int __init db1200_arch_init(void) -{ - /* GPIO7 is low-level triggered CPLD cascade */ - set_irq_type(AU1200_GPIO7_INT, IRQF_TRIGGER_LOW); - bcsr_init_irq(DB1200_INT_BEGIN, DB1200_INT_END, AU1200_GPIO7_INT); - - /* do not autoenable these: CPLD has broken edge int handling, - * and the CD handler setup requires manual enabling to work - * around that. - */ - irq_to_desc(DB1200_SD0_INSERT_INT)->status |= IRQ_NOAUTOEN; - irq_to_desc(DB1200_SD0_EJECT_INT)->status |= IRQ_NOAUTOEN; - - if (cpu_wait) - cpu_wait = db1200_wait; - - return 0; -} -arch_initcall(db1200_arch_init); |
