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[PATCH] powerpc: Unify udbg (#2)

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This patch unifies udbg for both ppc32 and ppc64 when building the
merged achitecture. xmon now has a single "back end". The powermac udbg
stuff gets enriched with some ADB capabilities and btext output. In
addition, the early_init callback is now called on ppc32 as well,
approx. in the same order as ppc64 regarding device-tree manipulations.
The init sequences of ppc32 and ppc64 are getting closer, I'll unify
them in a later patch.

For now, you can force udbg to the scc using "sccdbg" or to btext using
"btextdbg" on powermacs. I'll implement a cleaner way of forcing udbg
output to something else than the autodetected OF output device in a
later patch.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Benjamin Herrenschmidt
2005-11-23 17:57:25 +11:00
committed by Paul Mackerras
parent 463ce0e103
commit 51d3082fe6
29 changed files with 627 additions and 720 deletions
Download Patch File Download Diff File Expand all files Collapse all files

87
drivers/macintosh/via-pmu.c
View File

@@ -147,6 +147,7 @@ static struct device_node *vias;
static int pmu_kind = PMU_UNKNOWN;
static int pmu_fully_inited = 0;
static int pmu_has_adb;
static struct device_node *gpio_node;
static unsigned char __iomem *gpio_reg = NULL;
static int gpio_irq = -1;
static int gpio_irq_enabled = -1;
@@ -295,22 +296,26 @@ static struct backlight_controller pmu_backlight_controller = {
};
#endif /* CONFIG_PMAC_BACKLIGHT */
int
find_via_pmu(void)
int __init find_via_pmu(void)
{
phys_addr_t taddr;
u32 *reg;
if (via != 0)
return 1;
vias = find_devices("via-pmu");
if (vias == 0)
vias = of_find_node_by_name(NULL, "via-pmu");
if (vias == NULL)
return 0;
if (vias->next != 0)
printk(KERN_WARNING "Warning: only using 1st via-pmu\n");
if (vias->n_addrs < 1 || vias->n_intrs < 1) {
printk(KERN_ERR "via-pmu: %d addresses, %d interrupts!\n",
vias->n_addrs, vias->n_intrs);
if (vias->n_addrs < 1 || vias->n_intrs < 1)
return 0;
reg = (u32 *)get_property(vias, "reg", NULL);
if (reg == NULL) {
printk(KERN_ERR "via-pmu: No \"reg\" property !\n");
goto fail;
}
taddr = of_translate_address(vias, reg);
if (taddr == 0) {
printk(KERN_ERR "via-pmu: Can't translate address !\n");
goto fail;
}
spin_lock_init(&pmu_lock);
@@ -331,7 +336,8 @@ find_via_pmu(void)
pmu_kind = PMU_HEATHROW_BASED;
else if (device_is_compatible(vias->parent, "Keylargo")
|| device_is_compatible(vias->parent, "K2-Keylargo")) {
struct device_node *gpio, *gpiop;
struct device_node *gpiop;
phys_addr_t gaddr = 0;
pmu_kind = PMU_KEYLARGO_BASED;
pmu_has_adb = (find_type_devices("adb") != NULL);
@@ -341,19 +347,24 @@ find_via_pmu(void)
PMU_INT_TICK |
PMU_INT_ENVIRONMENT;
gpiop = find_devices("gpio");
if (gpiop && gpiop->n_addrs) {
gpio_reg = ioremap(gpiop->addrs->address, 0x10);
gpio = find_devices("extint-gpio1");
if (gpio == NULL)
gpio = find_devices("pmu-interrupt");
if (gpio && gpio->parent == gpiop && gpio->n_intrs)
gpio_irq = gpio->intrs[0].line;
gpiop = of_find_node_by_name(NULL, "gpio");
if (gpiop) {
reg = (u32 *)get_property(gpiop, "reg", NULL);
if (reg)
gaddr = of_translate_address(gpiop, reg);
if (gaddr != 0)
gpio_reg = ioremap(gaddr, 0x10);
}
if (gpio_reg == NULL)
printk(KERN_ERR "via-pmu: Can't find GPIO reg !\n");
} else
pmu_kind = PMU_UNKNOWN;
via = ioremap(vias->addrs->address, 0x2000);
via = ioremap(taddr, 0x2000);
if (via == NULL) {
printk(KERN_ERR "via-pmu: Can't map address !\n");
goto fail;
}
out_8(&via[IER], IER_CLR | 0x7f); /* disable all intrs */
out_8(&via[IFR], 0x7f); /* clear IFR */
@@ -371,17 +382,19 @@ find_via_pmu(void)
sys_ctrler = SYS_CTRLER_PMU;
return 1;
fail:
of_node_put(vias);
vias = NULL;
return 0;
}
#ifdef CONFIG_ADB
static int
pmu_probe(void)
static int pmu_probe(void)
{
return vias == NULL? -ENODEV: 0;
}
static int __init
pmu_init(void)
static int __init pmu_init(void)
{
if (vias == NULL)
return -ENODEV;
@@ -405,7 +418,7 @@ static int __init via_pmu_start(void)
bright_req_2.complete = 1;
batt_req.complete = 1;
#if defined(CONFIG_PPC32) && !defined(CONFIG_PPC_MERGE)
#ifndef CONFIG_PPC_MERGE
if (pmu_kind == PMU_KEYLARGO_BASED)
openpic_set_irq_priority(vias->intrs[0].line,
OPENPIC_PRIORITY_DEFAULT + 1);
@@ -418,10 +431,22 @@ static int __init via_pmu_start(void)
return -EAGAIN;
}
if (pmu_kind == PMU_KEYLARGO_BASED && gpio_irq != -1) {
if (request_irq(gpio_irq, gpio1_interrupt, 0, "GPIO1 ADB", (void *)0))
printk(KERN_ERR "pmu: can't get irq %d (GPIO1)\n", gpio_irq);
gpio_irq_enabled = 1;
if (pmu_kind == PMU_KEYLARGO_BASED) {
gpio_node = of_find_node_by_name(NULL, "extint-gpio1");
if (gpio_node == NULL)
gpio_node = of_find_node_by_name(NULL,
"pmu-interrupt");
if (gpio_node && gpio_node->n_intrs > 0)
gpio_irq = gpio_node->intrs[0].line;
if (gpio_irq != -1) {
if (request_irq(gpio_irq, gpio1_interrupt, 0,
"GPIO1 ADB", (void *)0))
printk(KERN_ERR "pmu: can't get irq %d"
" (GPIO1)\n", gpio_irq);
else
gpio_irq_enabled = 1;
}
}
/* Enable interrupts */
@@ -1371,7 +1396,6 @@ next:
}
pmu_done(req);
} else {
#if defined(CONFIG_XMON) && !defined(CONFIG_PPC64)
if (len == 4 && data[1] == 0x2c) {
extern int xmon_wants_key, xmon_adb_keycode;
if (xmon_wants_key) {
@@ -1379,7 +1403,6 @@ next:
return;
}
}
#endif /* defined(CONFIG_XMON) && !defined(CONFIG_PPC64) */
#ifdef CONFIG_ADB
/*
* XXX On the [23]400 the PMU gives us an up