sparc: remove CONFIG_SUN4

While doing some easy cleanups on the sparc code I noticed that the
CONFIG_SUN4 code seems to be worse than the rest - there were some
"I don't know how it should work, but the current code definitely cannot
work." places.

And while I have seen people running Linux on machines like a
SPARCstation 5 a few years ago I don't recall having seen sun4
machines, even less ones running Linux.

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 161 deletions

diff --git a/arch/sparc/kernel/time.c b/arch/sparc/kernel/time.c
index 339c4762fbcf..f0a2874b04e9 100644
--- a/arch/sparc/kernel/time.c
+++ b/arch/sparc/kernel/time.c
@@ -39,7 +39,6 @@
 #include <asm/io.h>
 #include <asm/idprom.h>
 #include <asm/machines.h>
-#include <asm/sun4paddr.h>
 #include <asm/page.h>
 #include <asm/pcic.h>
 #include <asm/irq_regs.h>
@@ -54,27 +53,6 @@ static struct mostek48t08 __iomem *mstk48t08_regs = NULL;
 static int set_rtc_mmss(unsigned long);
 static int sbus_do_settimeofday(struct timespec *tv);
 
-#ifdef CONFIG_SUN4
-struct intersil *intersil_clock;
-#define intersil_cmd(intersil_reg, intsil_cmd) intersil_reg->int_cmd_reg = \
-        (intsil_cmd)
-
-#define intersil_intr(intersil_reg, intsil_cmd) intersil_reg->int_intr_reg = \
-        (intsil_cmd)
-
-#define intersil_start(intersil_reg) intersil_cmd(intersil_reg, \
-        ( INTERSIL_START | INTERSIL_32K | INTERSIL_NORMAL | INTERSIL_24H |\
-          INTERSIL_INTR_ENABLE))
-
-#define intersil_stop(intersil_reg) intersil_cmd(intersil_reg, \
-        ( INTERSIL_STOP | INTERSIL_32K | INTERSIL_NORMAL | INTERSIL_24H |\
-          INTERSIL_INTR_ENABLE))
-
-#define intersil_read_intr(intersil_reg, towhere) towhere = \
-        intersil_reg->int_intr_reg
-
-#endif
-
 unsigned long profile_pc(struct pt_regs *regs)
 {
         extern char __copy_user_begin[], __copy_user_end[];
@@ -117,15 +95,7 @@ static irqreturn_t timer_interrupt(int dummy, void *dev_id)
 
         /* Protect counter clear so that do_gettimeoffset works */
         write_seqlock(&xtime_lock);
-#ifdef CONFIG_SUN4
-        if((idprom->id_machtype == (SM_SUN4 | SM_4_260)) ||
-           (idprom->id_machtype == (SM_SUN4 | SM_4_110))) {
-                int temp;
-                intersil_read_intr(intersil_clock, temp);
-                /* re-enable the irq */
-                enable_pil_irq(10);
-        }
-#endif
+
         clear_clock_irq();
 
         do_timer(1);
@@ -250,55 +220,6 @@ static void __devinit mostek_set_system_time(void)
         spin_unlock_irq(&mostek_lock);
 }
 
-/* Probe for the real time clock chip on Sun4 */
-static inline void sun4_clock_probe(void)
-{
-#ifdef CONFIG_SUN4
-        int temp;
-        struct resource r;
-
-        memset(&r, 0, sizeof(r));
-        if( idprom->id_machtype == (SM_SUN4 | SM_4_330) ) {
-                sp_clock_typ = MSTK48T02;
-                r.start = sun4_clock_physaddr;
-                mstk48t02_regs = of_ioremap(&r, 0,
-                                       sizeof(struct mostek48t02), NULL);
-                mstk48t08_regs = NULL;  /* To catch weirdness */
-                intersil_clock = NULL;  /* just in case */
-
-                /* Kick start the clock if it is completely stopped. */
-                if (mostek_read(mstk48t02_regs + MOSTEK_SEC) & MSTK_STOP)
-                        kick_start_clock();
-        } else if( idprom->id_machtype == (SM_SUN4 | SM_4_260)) {
-                /* intersil setup code */
-                printk("Clock: INTERSIL at %8x ",sun4_clock_physaddr);
-                sp_clock_typ = INTERSIL;
-                r.start = sun4_clock_physaddr;
-                intersil_clock = (struct intersil *) 
-                    of_ioremap(&r, 0, sizeof(*intersil_clock), "intersil");
-                mstk48t02_regs = 0;  /* just be sure */
-                mstk48t08_regs = NULL;  /* ditto */
-                /* initialise the clock */
-
-                intersil_intr(intersil_clock,INTERSIL_INT_100HZ);
-
-                intersil_start(intersil_clock);
-
-                intersil_read_intr(intersil_clock, temp);
-                while (!(temp & 0x80))
-                        intersil_read_intr(intersil_clock, temp);
-
-                intersil_read_intr(intersil_clock, temp);
-                while (!(temp & 0x80))
-                        intersil_read_intr(intersil_clock, temp);
-
-                intersil_stop(intersil_clock);
-
-        }
-#endif
-}
-
-#ifndef CONFIG_SUN4
 static int __devinit clock_probe(struct of_device *op, const struct of_device_id *match)
 {
         struct device_node *dp = op->node;
@@ -365,7 +286,6 @@ static int __init clock_init(void)
  * need to see the clock registers.
  */
 fs_initcall(clock_init);
-#endif /* !CONFIG_SUN4 */
 
 static void __init sbus_time_init(void)
 {
@@ -373,51 +293,8 @@ static void __init sbus_time_init(void)
         BTFIXUPSET_CALL(bus_do_settimeofday, sbus_do_settimeofday, BTFIXUPCALL_NORM);
         btfixup();
 
-        if (ARCH_SUN4)
-                sun4_clock_probe();
-
         sparc_init_timers(timer_interrupt);
         
-#ifdef CONFIG_SUN4
-        if(idprom->id_machtype == (SM_SUN4 | SM_4_330)) {
-                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) {
-                        prom_printf("Something wrong, clock regs not mapped yet.\n");
-                        prom_halt();
-                }
-
-                intersil_intr(intersil_clock,INTERSIL_INT_100HZ);
-                disable_pil_irq(10);
-                intersil_stop(iregs);
-                intersil_read_intr(intersil_clock, temp);
-
-                temp = iregs->clk.int_csec;
-
-                sec = iregs->clk.int_sec;
-                min = iregs->clk.int_min;
-                hour = iregs->clk.int_hour;
-                day = iregs->clk.int_day;
-                mon = iregs->clk.int_month;
-                year = MSTK_CVT_YEAR(iregs->clk.int_year);
-
-                enable_pil_irq(10);
-                intersil_start(iregs);
-
-                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);
-                printk("%u/%u/%u %u:%u:%u\n",day,mon,year,hour,min,sec);
-        }
-#endif
-
         /* Now that OBP ticker has been silenced, it is safe to enable IRQ. */
         local_irq_enable();
 }
@@ -532,43 +409,6 @@ static int set_rtc_mmss(unsigned long nowtime)
         int real_seconds, real_minutes, mostek_minutes;
         struct mostek48t02 *regs = (struct mostek48t02 *)mstk48t02_regs;
         unsigned long flags;
-#ifdef CONFIG_SUN4
-        struct intersil *iregs = intersil_clock;
-        int temp;
-#endif
-
-        /* Not having a register set can lead to trouble. */
-        if (!regs) {
-#ifdef CONFIG_SUN4
-                if(!iregs)
-                return -1;
-                else {
-                        temp = iregs->clk.int_csec;
-
-                        mostek_minutes = iregs->clk.int_min;
-
-                        real_seconds = nowtime % 60;
-                        real_minutes = nowtime / 60;
-                        if (((abs(real_minutes - mostek_minutes) + 15)/30) & 1)
-                                real_minutes += 30;     /* correct for half hour time zone */
-                        real_minutes %= 60;
-
-                        if (abs(real_minutes - mostek_minutes) < 30) {
-                                intersil_stop(iregs);
-                                iregs->clk.int_sec=real_seconds;
-                                iregs->clk.int_min=real_minutes;
-                                intersil_start(iregs);
-                        } else {
-                                printk(KERN_WARNING
-                               "set_rtc_mmss: can't update from %d to %d\n",
-                                       mostek_minutes, real_minutes);
-                                return -1;
-                        }
-                        
-                        return 0;
-                }
-#endif
-        }
 
         spin_lock_irqsave(&mostek_lock, flags);
         /* Read the current RTC minutes. */