X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=arch%2Fsparc%2Fkernel%2Ftime.c;fp=arch%2Fsparc%2Fkernel%2Ftime.c;h=845081b0126760ac14e8b7c2735ad089bee991f2;hb=16c70f8c1b54b61c3b951b6fb220df250fe09b32;hp=7dadcdb4ca42540b6dfef30afef9d3957bdec44d;hpb=4e76c8a9fa413ccc09d3f7f664183dcce3555d57;p=linux-2.6.git diff --git a/arch/sparc/kernel/time.c b/arch/sparc/kernel/time.c index 7dadcdb4c..845081b01 100644 --- a/arch/sparc/kernel/time.c +++ b/arch/sparc/kernel/time.c @@ -15,7 +15,6 @@ * 1997-09-10 Updated NTP code according to technical memorandum Jan '96 * "A Kernel Model for Precision Timekeeping" by Dave Mills */ -#include #include #include #include @@ -42,6 +41,7 @@ #include #include #include +#include extern unsigned long wall_jiffies; @@ -225,6 +225,32 @@ static __inline__ int has_low_battery(void) return (data1 == data2); /* Was the write blocked? */ } +static void __init mostek_set_system_time(void) +{ + unsigned int year, mon, day, hour, min, sec; + struct mostek48t02 *mregs; + + mregs = (struct mostek48t02 *)mstk48t02_regs; + if(!mregs) { + prom_printf("Something wrong, clock regs not mapped yet.\n"); + prom_halt(); + } + spin_lock_irq(&mostek_lock); + mregs->creg |= MSTK_CREG_READ; + sec = MSTK_REG_SEC(mregs); + min = MSTK_REG_MIN(mregs); + hour = MSTK_REG_HOUR(mregs); + day = MSTK_REG_DOM(mregs); + mon = MSTK_REG_MONTH(mregs); + year = MSTK_CVT_YEAR( MSTK_REG_YEAR(mregs) ); + xtime.tv_sec = mktime(year, mon, day, hour, min, sec); + xtime.tv_nsec = (INITIAL_JIFFIES % HZ) * (NSEC_PER_SEC / HZ); + set_normalized_timespec(&wall_to_monotonic, + -xtime.tv_sec, -xtime.tv_nsec); + mregs->creg &= ~MSTK_CREG_READ; + spin_unlock_irq(&mostek_lock); +} + /* Probe for the real time clock chip on Sun4 */ static __inline__ void sun4_clock_probe(void) { @@ -273,83 +299,32 @@ static __inline__ void sun4_clock_probe(void) #endif } -/* Probe for the mostek real time clock chip. */ -static __inline__ void clock_probe(void) +#ifndef CONFIG_SUN4 +static int __devinit clock_probe(struct of_device *op, const struct of_device_id *match) { - struct linux_prom_registers clk_reg[2]; - char model[128]; - register int node, cpuunit, bootbus; - struct resource r; + struct device_node *dp = op->node; + char *model = of_get_property(dp, "model", NULL); - cpuunit = bootbus = 0; - memset(&r, 0, sizeof(r)); + if (!model) + return -ENODEV; - /* Determine the correct starting PROM node for the probe. */ - node = prom_getchild(prom_root_node); - switch (sparc_cpu_model) { - case sun4c: - break; - case sun4m: - node = prom_getchild(prom_searchsiblings(node, "obio")); - break; - case sun4d: - node = prom_getchild(bootbus = prom_searchsiblings(prom_getchild(cpuunit = prom_searchsiblings(node, "cpu-unit")), "bootbus")); - break; - default: - prom_printf("CLOCK: Unsupported architecture!\n"); - prom_halt(); - } - - /* Find the PROM node describing the real time clock. */ - sp_clock_typ = MSTK_INVALID; - node = prom_searchsiblings(node,"eeprom"); - if (!node) { - prom_printf("CLOCK: No clock found!\n"); - prom_halt(); - } - - /* Get the model name and setup everything up. */ - model[0] = '\0'; - prom_getstring(node, "model", model, sizeof(model)); - if (strcmp(model, "mk48t02") == 0) { + if (!strcmp(model, "mk48t02")) { sp_clock_typ = MSTK48T02; - if (prom_getproperty(node, "reg", (char *) clk_reg, sizeof(clk_reg)) == -1) { - prom_printf("clock_probe: FAILED!\n"); - prom_halt(); - } - if (sparc_cpu_model == sun4d) - prom_apply_generic_ranges (bootbus, cpuunit, clk_reg, 1); - else - prom_apply_obio_ranges(clk_reg, 1); + /* Map the clock register io area read-only */ - r.flags = clk_reg[0].which_io; - r.start = clk_reg[0].phys_addr; - mstk48t02_regs = sbus_ioremap(&r, 0, - sizeof(struct mostek48t02), "mk48t02"); + mstk48t02_regs = of_ioremap(&op->resource[0], 0, + sizeof(struct mostek48t02), + "mk48t02"); mstk48t08_regs = NULL; /* To catch weirdness */ - } else if (strcmp(model, "mk48t08") == 0) { + } else if (!strcmp(model, "mk48t08")) { sp_clock_typ = MSTK48T08; - if(prom_getproperty(node, "reg", (char *) clk_reg, - sizeof(clk_reg)) == -1) { - prom_printf("clock_probe: FAILED!\n"); - prom_halt(); - } - if (sparc_cpu_model == sun4d) - prom_apply_generic_ranges (bootbus, cpuunit, clk_reg, 1); - else - prom_apply_obio_ranges(clk_reg, 1); - /* Map the clock register io area read-only */ - /* XXX r/o attribute is somewhere in r.flags */ - r.flags = clk_reg[0].which_io; - r.start = clk_reg[0].phys_addr; - mstk48t08_regs = sbus_ioremap(&r, 0, - sizeof(struct mostek48t08), "mk48t08"); + mstk48t08_regs = of_ioremap(&op->resource[0], 0, + sizeof(struct mostek48t08), + "mk48t08"); mstk48t02_regs = &mstk48t08_regs->regs; - } else { - prom_printf("CLOCK: Unknown model name '%s'\n",model); - prom_halt(); - } + } else + return -ENODEV; /* Report a low battery voltage condition. */ if (has_low_battery()) @@ -358,53 +333,58 @@ static __inline__ void clock_probe(void) /* Kick start the clock if it is completely stopped. */ if (mostek_read(mstk48t02_regs + MOSTEK_SEC) & MSTK_STOP) kick_start_clock(); + + mostek_set_system_time(); + + return 0; } -void __init sbus_time_init(void) +static struct of_device_id clock_match[] = { + { + .name = "eeprom", + }, + {}, +}; + +static struct of_platform_driver clock_driver = { + .name = "clock", + .match_table = clock_match, + .probe = clock_probe, +}; + + +/* Probe for the mostek real time clock chip. */ +static int __init clock_init(void) { - unsigned int year, mon, day, hour, min, sec; - struct mostek48t02 *mregs; + return of_register_driver(&clock_driver, &of_bus_type); +} -#ifdef CONFIG_SUN4 - int temp; - struct intersil *iregs; -#endif +/* Must be after subsys_initcall() so that busses are probed. Must + * be before device_initcall() because things like the RTC driver + * need to see the clock registers. + */ +fs_initcall(clock_init); +#endif /* !CONFIG_SUN4 */ + +void __init sbus_time_init(void) +{ BTFIXUPSET_CALL(bus_do_settimeofday, sbus_do_settimeofday, BTFIXUPCALL_NORM); btfixup(); if (ARCH_SUN4) sun4_clock_probe(); - else - clock_probe(); sparc_init_timers(timer_interrupt); #ifdef CONFIG_SUN4 if(idprom->id_machtype == (SM_SUN4 | SM_4_330)) { -#endif - mregs = (struct mostek48t02 *)mstk48t02_regs; - if(!mregs) { - prom_printf("Something wrong, clock regs not mapped yet.\n"); - prom_halt(); - } - spin_lock_irq(&mostek_lock); - mregs->creg |= MSTK_CREG_READ; - sec = MSTK_REG_SEC(mregs); - min = MSTK_REG_MIN(mregs); - hour = MSTK_REG_HOUR(mregs); - day = MSTK_REG_DOM(mregs); - mon = MSTK_REG_MONTH(mregs); - year = MSTK_CVT_YEAR( MSTK_REG_YEAR(mregs) ); - xtime.tv_sec = mktime(year, mon, day, hour, min, sec); - xtime.tv_nsec = (INITIAL_JIFFIES % HZ) * (NSEC_PER_SEC / HZ); - set_normalized_timespec(&wall_to_monotonic, - -xtime.tv_sec, -xtime.tv_nsec); - mregs->creg &= ~MSTK_CREG_READ; - spin_unlock_irq(&mostek_lock); -#ifdef CONFIG_SUN4 + mostek_set_system_time(); } else if(idprom->id_machtype == (SM_SUN4 | SM_4_260) ) { /* initialise the intersil on sun4 */ + unsigned int year, mon, day, hour, min, sec; + int temp; + struct intersil *iregs; iregs=intersil_clock; if(!iregs) {