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authorPaul Mackerras <paulus@samba.org>2006-08-01 10:37:25 +1000
committerPaul Mackerras <paulus@samba.org>2006-08-01 10:37:25 +1000
commit57cad8084e0837e0f2c97da789ec9b3f36809be9 (patch)
treee9c790afb4286f78cb08d9664f58baa7e876fe55 /arch/powerpc/platforms/powermac
parentcb18bd40030c879cd93fef02fd579f74dbab473d (diff)
parent49b1e3ea19b1c95c2f012b8331ffb3b169e4c042 (diff)
Merge branch 'merge'
Diffstat (limited to 'arch/powerpc/platforms/powermac')
-rw-r--r--arch/powerpc/platforms/powermac/backlight.c85
-rw-r--r--arch/powerpc/platforms/powermac/cpufreq_64.c14
-rw-r--r--arch/powerpc/platforms/powermac/pci.c13
-rw-r--r--arch/powerpc/platforms/powermac/pic.c8
4 files changed, 94 insertions, 26 deletions
diff --git a/arch/powerpc/platforms/powermac/backlight.c b/arch/powerpc/platforms/powermac/backlight.c
index 205b4a39286..afa593a8544 100644
--- a/arch/powerpc/platforms/powermac/backlight.c
+++ b/arch/powerpc/platforms/powermac/backlight.c
@@ -10,11 +10,33 @@
#include <linux/kernel.h>
#include <linux/fb.h>
#include <linux/backlight.h>
+#include <linux/adb.h>
+#include <linux/pmu.h>
+#include <asm/atomic.h>
#include <asm/prom.h>
#include <asm/backlight.h>
#define OLD_BACKLIGHT_MAX 15
+static void pmac_backlight_key_worker(void *data);
+static void pmac_backlight_set_legacy_worker(void *data);
+
+static DECLARE_WORK(pmac_backlight_key_work, pmac_backlight_key_worker, NULL);
+static DECLARE_WORK(pmac_backlight_set_legacy_work, pmac_backlight_set_legacy_worker, NULL);
+
+/* Although these variables are used in interrupt context, it makes no sense to
+ * protect them. No user is able to produce enough key events per second and
+ * notice the errors that might happen.
+ */
+static int pmac_backlight_key_queued;
+static int pmac_backlight_set_legacy_queued;
+
+/* The via-pmu code allows the backlight to be grabbed, in which case the
+ * in-kernel control of the brightness needs to be disabled. This should
+ * only be used by really old PowerBooks.
+ */
+static atomic_t kernel_backlight_disabled = ATOMIC_INIT(0);
+
/* Protect the pmac_backlight variable */
DEFINE_MUTEX(pmac_backlight_mutex);
@@ -72,8 +94,11 @@ int pmac_backlight_curve_lookup(struct fb_info *info, int value)
return level;
}
-static void pmac_backlight_key(int direction)
+static void pmac_backlight_key_worker(void *data)
{
+ if (atomic_read(&kernel_backlight_disabled))
+ return;
+
mutex_lock(&pmac_backlight_mutex);
if (pmac_backlight) {
struct backlight_properties *props;
@@ -83,7 +108,8 @@ static void pmac_backlight_key(int direction)
props = pmac_backlight->props;
brightness = props->brightness +
- ((direction?-1:1) * (props->max_brightness / 15));
+ ((pmac_backlight_key_queued?-1:1) *
+ (props->max_brightness / 15));
if (brightness < 0)
brightness = 0;
@@ -98,17 +124,20 @@ static void pmac_backlight_key(int direction)
mutex_unlock(&pmac_backlight_mutex);
}
-void pmac_backlight_key_up()
+/* This function is called in interrupt context */
+void pmac_backlight_key(int direction)
{
- pmac_backlight_key(0);
+ if (atomic_read(&kernel_backlight_disabled))
+ return;
+
+ /* we can receive multiple interrupts here, but the scheduled work
+ * will run only once, with the last value
+ */
+ pmac_backlight_key_queued = direction;
+ schedule_work(&pmac_backlight_key_work);
}
-void pmac_backlight_key_down()
-{
- pmac_backlight_key(1);
-}
-
-int pmac_backlight_set_legacy_brightness(int brightness)
+static int __pmac_backlight_set_legacy_brightness(int brightness)
{
int error = -ENXIO;
@@ -137,6 +166,28 @@ int pmac_backlight_set_legacy_brightness(int brightness)
return error;
}
+static void pmac_backlight_set_legacy_worker(void *data)
+{
+ if (atomic_read(&kernel_backlight_disabled))
+ return;
+
+ __pmac_backlight_set_legacy_brightness(pmac_backlight_set_legacy_queued);
+}
+
+/* This function is called in interrupt context */
+void pmac_backlight_set_legacy_brightness_pmu(int brightness) {
+ if (atomic_read(&kernel_backlight_disabled))
+ return;
+
+ pmac_backlight_set_legacy_queued = brightness;
+ schedule_work(&pmac_backlight_set_legacy_work);
+}
+
+int pmac_backlight_set_legacy_brightness(int brightness)
+{
+ return __pmac_backlight_set_legacy_brightness(brightness);
+}
+
int pmac_backlight_get_legacy_brightness()
{
int result = -ENXIO;
@@ -158,3 +209,17 @@ int pmac_backlight_get_legacy_brightness()
return result;
}
+
+void pmac_backlight_disable()
+{
+ atomic_inc(&kernel_backlight_disabled);
+}
+
+void pmac_backlight_enable()
+{
+ atomic_dec(&kernel_backlight_disabled);
+}
+
+EXPORT_SYMBOL_GPL(pmac_backlight);
+EXPORT_SYMBOL_GPL(pmac_backlight_mutex);
+EXPORT_SYMBOL_GPL(pmac_has_backlight_type);
diff --git a/arch/powerpc/platforms/powermac/cpufreq_64.c b/arch/powerpc/platforms/powermac/cpufreq_64.c
index c364c89adb4..167cd3ce8a1 100644
--- a/arch/powerpc/platforms/powermac/cpufreq_64.c
+++ b/arch/powerpc/platforms/powermac/cpufreq_64.c
@@ -87,9 +87,9 @@ static int (*g5_query_freq)(void);
static DEFINE_MUTEX(g5_switch_mutex);
-#ifdef CONFIG_PPC_SMU
+#ifdef CONFIG_PMAC_SMU
-static const u32 *g5_pmode_data;
+static u32 *g5_pmode_data;
static int g5_pmode_max;
static struct smu_sdbp_fvt *g5_fvt_table; /* table of op. points */
@@ -216,7 +216,7 @@ static void g5_dummy_switch_volt(int speed_mode)
{
}
-#endif /* CONFIG_PPC_SMU */
+#endif /* CONFIG_PMAC_SMU */
/*
* Platform function based voltage switching for PowerMac7,2 & 7,3
@@ -383,7 +383,7 @@ static struct cpufreq_driver g5_cpufreq_driver = {
};
-#ifdef CONFIG_PPC_SMU
+#ifdef CONFIG_PMAC_SMU
static int __init g5_neo2_cpufreq_init(struct device_node *cpus)
{
@@ -535,7 +535,7 @@ static int __init g5_neo2_cpufreq_init(struct device_node *cpus)
return rc;
}
-#endif /* CONFIG_PPC_SMU */
+#endif /* CONFIG_PMAC_SMU */
static int __init g5_pm72_cpufreq_init(struct device_node *cpus)
@@ -731,10 +731,10 @@ static int __init g5_cpufreq_init(void)
machine_is_compatible("PowerMac7,3") ||
machine_is_compatible("RackMac3,1"))
rc = g5_pm72_cpufreq_init(cpus);
-#ifdef CONFIG_PPC_SMU
+#ifdef CONFIG_PMAC_SMU
else
rc = g5_neo2_cpufreq_init(cpus);
-#endif /* CONFIG_PPC_SMU */
+#endif /* CONFIG_PMAC_SMU */
of_node_put(cpus);
return rc;
diff --git a/arch/powerpc/platforms/powermac/pci.c b/arch/powerpc/platforms/powermac/pci.c
index 787ffd999bc..9923adc5248 100644
--- a/arch/powerpc/platforms/powermac/pci.c
+++ b/arch/powerpc/platforms/powermac/pci.c
@@ -16,6 +16,7 @@
#include <linux/string.h>
#include <linux/init.h>
#include <linux/bootmem.h>
+#include <linux/irq.h>
#include <asm/sections.h>
#include <asm/io.h>
@@ -24,10 +25,7 @@
#include <asm/machdep.h>
#include <asm/pmac_feature.h>
#include <asm/grackle.h>
-#ifdef CONFIG_PPC64
-//#include <asm/iommu.h>
#include <asm/ppc-pci.h>
-#endif
#undef DEBUG
@@ -46,7 +44,6 @@ static int has_uninorth;
static struct pci_controller *u3_agp;
static struct pci_controller *u4_pcie;
static struct pci_controller *u3_ht;
-#define has_second_ohare 0
#else
static int has_second_ohare;
#endif /* CONFIG_PPC64 */
@@ -996,6 +993,7 @@ void __init pmac_pcibios_fixup(void)
/* Read interrupt from the device-tree */
pci_read_irq_line(dev);
+#ifdef CONFIG_PPC32
/* Fixup interrupt for the modem/ethernet combo controller.
* on machines with a second ohare chip.
* The number in the device tree (27) is bogus (correct for
@@ -1005,8 +1003,11 @@ void __init pmac_pcibios_fixup(void)
*/
if (has_second_ohare &&
dev->vendor == PCI_VENDOR_ID_DEC &&
- dev->device == PCI_DEVICE_ID_DEC_TULIP_PLUS)
- dev->irq = irq_create_mapping(NULL, 60, 0);
+ dev->device == PCI_DEVICE_ID_DEC_TULIP_PLUS) {
+ dev->irq = irq_create_mapping(NULL, 60);
+ set_irq_type(dev->irq, IRQ_TYPE_LEVEL_LOW);
+ }
+#endif /* CONFIG_PPC32 */
}
}
diff --git a/arch/powerpc/platforms/powermac/pic.c b/arch/powerpc/platforms/powermac/pic.c
index 3d328bc1f7e..060789e31c6 100644
--- a/arch/powerpc/platforms/powermac/pic.c
+++ b/arch/powerpc/platforms/powermac/pic.c
@@ -291,7 +291,7 @@ static int pmac_pic_host_match(struct irq_host *h, struct device_node *node)
}
static int pmac_pic_host_map(struct irq_host *h, unsigned int virq,
- irq_hw_number_t hw, unsigned int flags)
+ irq_hw_number_t hw)
{
struct irq_desc *desc = get_irq_desc(virq);
int level;
@@ -318,6 +318,7 @@ static int pmac_pic_host_xlate(struct irq_host *h, struct device_node *ct,
unsigned int *out_flags)
{
+ *out_flags = IRQ_TYPE_NONE;
*out_hwirq = *intspec;
return 0;
}
@@ -434,7 +435,7 @@ static void __init pmac_pic_probe_oldstyle(void)
printk(KERN_INFO "irq: System has %d possible interrupts\n", max_irqs);
#ifdef CONFIG_XMON
- setup_irq(irq_create_mapping(NULL, 20, 0), &xmon_action);
+ setup_irq(irq_create_mapping(NULL, 20), &xmon_action);
#endif
}
#endif /* CONFIG_PPC32 */
@@ -579,9 +580,10 @@ void __init pmac_pic_init(void)
flags |= OF_IMAP_OLDWORLD_MAC;
if (get_property(of_chosen, "linux,bootx", NULL) != NULL)
flags |= OF_IMAP_NO_PHANDLE;
- of_irq_map_init(flags);
#endif /* CONFIG_PPC_32 */
+ of_irq_map_init(flags);
+
/* We first try to detect Apple's new Core99 chipset, since mac-io
* is quite different on those machines and contains an IBM MPIC2.
*/