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[SPARC]: Convert clock drivers to of_driver framework.

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Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller
2006-06-29 14:36:52 -07:00
committed by David S. Miller
parent 36a59bd89c
commit ee5caf0ee1
4 changed files with 103 additions and 274 deletions
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109
arch/sparc/kernel/time.c
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@ -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;
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())
@ -358,6 +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);