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-rw-r--r--arch/x86/platform/Makefile1
-rw-r--r--arch/x86/platform/geode/Makefile1
-rw-r--r--arch/x86/platform/geode/alix.c142
-rw-r--r--arch/x86/platform/mrst/mrst.c25
-rw-r--r--arch/x86/platform/mrst/vrtc.c9
5 files changed, 168 insertions, 10 deletions
diff --git a/arch/x86/platform/Makefile b/arch/x86/platform/Makefile
index 021eee91c056..8d874396cb29 100644
--- a/arch/x86/platform/Makefile
+++ b/arch/x86/platform/Makefile
@@ -1,6 +1,7 @@
# Platform specific code goes here
obj-y += ce4100/
obj-y += efi/
+obj-y += geode/
obj-y += iris/
obj-y += mrst/
obj-y += olpc/
diff --git a/arch/x86/platform/geode/Makefile b/arch/x86/platform/geode/Makefile
new file mode 100644
index 000000000000..07c9cd05021a
--- /dev/null
+++ b/arch/x86/platform/geode/Makefile
@@ -0,0 +1 @@
+obj-$(CONFIG_ALIX) += alix.o
diff --git a/arch/x86/platform/geode/alix.c b/arch/x86/platform/geode/alix.c
new file mode 100644
index 000000000000..ca1973699d3d
--- /dev/null
+++ b/arch/x86/platform/geode/alix.c
@@ -0,0 +1,142 @@
+/*
+ * System Specific setup for PCEngines ALIX.
+ * At the moment this means setup of GPIO control of LEDs
+ * on Alix.2/3/6 boards.
+ *
+ *
+ * Copyright (C) 2008 Constantin Baranov <const@mimas.ru>
+ * Copyright (C) 2011 Ed Wildgoose <kernel@wildgooses.com>
+ *
+ * TODO: There are large similarities with leds-net5501.c
+ * by Alessandro Zummo <a.zummo@towertech.it>
+ * In the future leds-net5501.c should be migrated over to platform
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation.
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/io.h>
+#include <linux/string.h>
+#include <linux/module.h>
+#include <linux/leds.h>
+#include <linux/platform_device.h>
+#include <linux/gpio.h>
+
+#include <asm/geode.h>
+
+static int force = 0;
+module_param(force, bool, 0444);
+/* FIXME: Award bios is not automatically detected as Alix platform */
+MODULE_PARM_DESC(force, "Force detection as ALIX.2/ALIX.3 platform");
+
+static struct gpio_led alix_leds[] = {
+ {
+ .name = "alix:1",
+ .gpio = 6,
+ .default_trigger = "default-on",
+ .active_low = 1,
+ },
+ {
+ .name = "alix:2",
+ .gpio = 25,
+ .default_trigger = "default-off",
+ .active_low = 1,
+ },
+ {
+ .name = "alix:3",
+ .gpio = 27,
+ .default_trigger = "default-off",
+ .active_low = 1,
+ },
+};
+
+static struct gpio_led_platform_data alix_leds_data = {
+ .num_leds = ARRAY_SIZE(alix_leds),
+ .leds = alix_leds,
+};
+
+static struct platform_device alix_leds_dev = {
+ .name = "leds-gpio",
+ .id = -1,
+ .dev.platform_data = &alix_leds_data,
+};
+
+static void __init register_alix(void)
+{
+ /* Setup LED control through leds-gpio driver */
+ platform_device_register(&alix_leds_dev);
+}
+
+static int __init alix_present(unsigned long bios_phys,
+ const char *alix_sig,
+ size_t alix_sig_len)
+{
+ const size_t bios_len = 0x00010000;
+ const char *bios_virt;
+ const char *scan_end;
+ const char *p;
+ char name[64];
+
+ if (force) {
+ printk(KERN_NOTICE "%s: forced to skip BIOS test, "
+ "assume system is ALIX.2/ALIX.3\n",
+ KBUILD_MODNAME);
+ return 1;
+ }
+
+ bios_virt = phys_to_virt(bios_phys);
+ scan_end = bios_virt + bios_len - (alix_sig_len + 2);
+ for (p = bios_virt; p < scan_end; p++) {
+ const char *tail;
+ char *a;
+
+ if (memcmp(p, alix_sig, alix_sig_len) != 0)
+ continue;
+
+ memcpy(name, p, sizeof(name));
+
+ /* remove the first \0 character from string */
+ a = strchr(name, '\0');
+ if (a)
+ *a = ' ';
+
+ /* cut the string at a newline */
+ a = strchr(name, '\r');
+ if (a)
+ *a = '\0';
+
+ tail = p + alix_sig_len;
+ if ((tail[0] == '2' || tail[0] == '3')) {
+ printk(KERN_INFO
+ "%s: system is recognized as \"%s\"\n",
+ KBUILD_MODNAME, name);
+ return 1;
+ }
+ }
+
+ return 0;
+}
+
+static int __init alix_init(void)
+{
+ const char tinybios_sig[] = "PC Engines ALIX.";
+ const char coreboot_sig[] = "PC Engines\0ALIX.";
+
+ if (!is_geode())
+ return 0;
+
+ if (alix_present(0xf0000, tinybios_sig, sizeof(tinybios_sig) - 1) ||
+ alix_present(0x500, coreboot_sig, sizeof(coreboot_sig) - 1))
+ register_alix();
+
+ return 0;
+}
+
+module_init(alix_init);
+
+MODULE_AUTHOR("Ed Wildgoose <kernel@wildgooses.com>");
+MODULE_DESCRIPTION("PCEngines ALIX System Setup");
+MODULE_LICENSE("GPL");
diff --git a/arch/x86/platform/mrst/mrst.c b/arch/x86/platform/mrst/mrst.c
index 58425adc22c6..e6379526675b 100644
--- a/arch/x86/platform/mrst/mrst.c
+++ b/arch/x86/platform/mrst/mrst.c
@@ -14,6 +14,8 @@
#include <linux/init.h>
#include <linux/kernel.h>
+#include <linux/interrupt.h>
+#include <linux/scatterlist.h>
#include <linux/sfi.h>
#include <linux/intel_pmic_gpio.h>
#include <linux/spi/spi.h>
@@ -392,6 +394,7 @@ static void __init *max3111_platform_data(void *info)
struct spi_board_info *spi_info = info;
int intr = get_gpio_by_name("max3111_int");
+ spi_info->mode = SPI_MODE_0;
if (intr == -1)
return NULL;
spi_info->irq = intr + MRST_IRQ_OFFSET;
@@ -678,38 +681,40 @@ static int __init sfi_parse_devs(struct sfi_table_header *table)
pentry = (struct sfi_device_table_entry *)sb->pentry;
for (i = 0; i < num; i++, pentry++) {
- if (pentry->irq != (u8)0xff) { /* native RTE case */
+ int irq = pentry->irq;
+
+ if (irq != (u8)0xff) { /* native RTE case */
/* these SPI2 devices are not exposed to system as PCI
* devices, but they have separate RTE entry in IOAPIC
* so we have to enable them one by one here
*/
- ioapic = mp_find_ioapic(pentry->irq);
+ ioapic = mp_find_ioapic(irq);
irq_attr.ioapic = ioapic;
- irq_attr.ioapic_pin = pentry->irq;
+ irq_attr.ioapic_pin = irq;
irq_attr.trigger = 1;
irq_attr.polarity = 1;
- io_apic_set_pci_routing(NULL, pentry->irq, &irq_attr);
+ io_apic_set_pci_routing(NULL, irq, &irq_attr);
} else
- pentry->irq = 0; /* No irq */
+ irq = 0; /* No irq */
switch (pentry->type) {
case SFI_DEV_TYPE_IPC:
/* ID as IRQ is a hack that will go away */
- pdev = platform_device_alloc(pentry->name, pentry->irq);
+ pdev = platform_device_alloc(pentry->name, irq);
if (pdev == NULL) {
pr_err("out of memory for SFI platform device '%s'.\n",
pentry->name);
continue;
}
- install_irq_resource(pdev, pentry->irq);
+ install_irq_resource(pdev, irq);
pr_debug("info[%2d]: IPC bus, name = %16.16s, "
- "irq = 0x%2x\n", i, pentry->name, pentry->irq);
+ "irq = 0x%2x\n", i, pentry->name, irq);
sfi_handle_ipc_dev(pdev);
break;
case SFI_DEV_TYPE_SPI:
memset(&spi_info, 0, sizeof(spi_info));
strncpy(spi_info.modalias, pentry->name, SFI_NAME_LEN);
- spi_info.irq = pentry->irq;
+ spi_info.irq = irq;
spi_info.bus_num = pentry->host_num;
spi_info.chip_select = pentry->addr;
spi_info.max_speed_hz = pentry->max_freq;
@@ -726,7 +731,7 @@ static int __init sfi_parse_devs(struct sfi_table_header *table)
memset(&i2c_info, 0, sizeof(i2c_info));
bus = pentry->host_num;
strncpy(i2c_info.type, pentry->name, SFI_NAME_LEN);
- i2c_info.irq = pentry->irq;
+ i2c_info.irq = irq;
i2c_info.addr = pentry->addr;
pr_debug("info[%2d]: I2C bus = %d, name = %16.16s, "
"irq = 0x%2x, addr = 0x%x\n", i, bus,
diff --git a/arch/x86/platform/mrst/vrtc.c b/arch/x86/platform/mrst/vrtc.c
index 73d70d65e76e..6d5dbcdd444a 100644
--- a/arch/x86/platform/mrst/vrtc.c
+++ b/arch/x86/platform/mrst/vrtc.c
@@ -58,8 +58,11 @@ EXPORT_SYMBOL_GPL(vrtc_cmos_write);
unsigned long vrtc_get_time(void)
{
u8 sec, min, hour, mday, mon;
+ unsigned long flags;
u32 year;
+ spin_lock_irqsave(&rtc_lock, flags);
+
while ((vrtc_cmos_read(RTC_FREQ_SELECT) & RTC_UIP))
cpu_relax();
@@ -70,6 +73,8 @@ unsigned long vrtc_get_time(void)
mon = vrtc_cmos_read(RTC_MONTH);
year = vrtc_cmos_read(RTC_YEAR);
+ spin_unlock_irqrestore(&rtc_lock, flags);
+
/* vRTC YEAR reg contains the offset to 1960 */
year += 1960;
@@ -83,8 +88,10 @@ unsigned long vrtc_get_time(void)
int vrtc_set_mmss(unsigned long nowtime)
{
int real_sec, real_min;
+ unsigned long flags;
int vrtc_min;
+ spin_lock_irqsave(&rtc_lock, flags);
vrtc_min = vrtc_cmos_read(RTC_MINUTES);
real_sec = nowtime % 60;
@@ -95,6 +102,8 @@ int vrtc_set_mmss(unsigned long nowtime)
vrtc_cmos_write(real_sec, RTC_SECONDS);
vrtc_cmos_write(real_min, RTC_MINUTES);
+ spin_unlock_irqrestore(&rtc_lock, flags);
+
return 0;
}
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