[SPARC]: Convert clock drivers to of_driver framework.

Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 40 insertions, 69 deletions

diff --git a/arch/sparc/kernel/time.c b/arch/sparc/kernel/time.c
index 7dadcdb4ca42..9631e8f4ae60 100644
--- a/arch/sparc/kernel/time.c
+++ b/arch/sparc/kernel/time.c
@@ -42,6 +42,7 @@
 #include <asm/sun4paddr.h>
 #include <asm/page.h>
 #include <asm/pcic.h>
+#include <asm/of_device.h>
 
 extern unsigned long wall_jiffies;
 
@@ -273,83 +274,31 @@ static __inline__ void sun4_clock_probe(void)
 #endif
 }
 
-/* Probe for the mostek real time clock chip. */
-static __inline__ void clock_probe(void)
+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;
-
-        cpuunit = bootbus = 0;
-        memset(&r, 0, sizeof(r));
-
-        /* 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();
-        }
+        struct device_node *dp = op->node;
+        char *model = of_get_property(dp, "model", NULL);
 
-        /* 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();
-        }
+        if (!model)
+                return -ENODEV;
 
-        /* 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())
@@ -358,6 +307,28 @@ 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();
+
+        return 0;
+}
+
+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 void clock_init(void)
+{
+        of_register_driver(&clock_driver, &of_bus_type);
 }
 
 void __init sbus_time_init(void)
@@ -376,7 +347,7 @@ void __init sbus_time_init(void)
         if (ARCH_SUN4)
                 sun4_clock_probe();
         else
-                clock_probe();
+                clock_init();
 
         sparc_init_timers(timer_interrupt);