Merge commit 'v2.6.31-rc7' into x86/cpu

1 files changed, 47 insertions, 68 deletions

diff --git a/arch/powerpc/platforms/44x/warp.c b/arch/powerpc/platforms/44x/warp.c
index 960edf89be5..e5c1b096c3e 100644
--- a/arch/powerpc/platforms/44x/warp.c
+++ b/arch/powerpc/platforms/44x/warp.c
@@ -1,7 +1,7 @@
 /*
  * PIKA Warp(tm) board specific routines
  *
- * Copyright (c) 2008 PIKA Technologies
+ * Copyright (c) 2008-2009 PIKA Technologies
  *   Sean MacLennan <smaclennan@pikatech.com>
  *
  * This program is free software; you can redistribute  it and/or modify it
@@ -15,6 +15,8 @@
 #include <linux/i2c.h>
 #include <linux/interrupt.h>
 #include <linux/delay.h>
+#include <linux/of_gpio.h>
+#include <linux/of_i2c.h>
 
 #include <asm/machdep.h>
 #include <asm/prom.h>
@@ -23,6 +25,7 @@
 #include <asm/uic.h>
 #include <asm/ppc4xx.h>
 
+
 static __initdata struct of_device_id warp_of_bus[] = {
 	{ .compatible = "ibm,plb4", },
 	{ .compatible = "ibm,opb", },
@@ -41,7 +44,13 @@ static int __init warp_probe(void)
 {
 	unsigned long root = of_get_flat_dt_root();
 
-	return of_flat_dt_is_compatible(root, "pika,warp");
+	if (!of_flat_dt_is_compatible(root, "pika,warp"))
+		return 0;
+
+	/* For __dma_alloc_coherent */
+	ISA_DMA_THRESHOLD = ~0L;
+
+	return 1;
 }
 
 define_machine(warp) {
@@ -55,7 +64,6 @@ define_machine(warp) {
 };
 
 
-/* I am not sure this is the best place for this... */
 static int __init warp_post_info(void)
 {
 	struct device_node *np;
@@ -84,14 +92,13 @@ static int __init warp_post_info(void)
 
 	return 0;
 }
-machine_late_initcall(warp, warp_post_info);
 
 
 #ifdef CONFIG_SENSORS_AD7414
 
 static LIST_HEAD(dtm_shutdown_list);
 static void __iomem *dtm_fpga;
-static void __iomem *gpio_base;
+static unsigned green_led, red_led;
 
 
 struct dtm_shutdown {
@@ -134,14 +141,17 @@ int pika_dtm_unregister_shutdown(void (*func)(void *arg), void *arg)
 static irqreturn_t temp_isr(int irq, void *context)
 {
 	struct dtm_shutdown *shutdown;
+	int value = 1;
 
 	local_irq_disable();
 
+	gpio_set_value(green_led, 0);
+
 	/* Run through the shutdown list. */
 	list_for_each_entry(shutdown, &dtm_shutdown_list, list)
 		shutdown->func(shutdown->arg);
 
-	printk(KERN_EMERG "\n\nCritical Temperature Shutdown\n");
+	printk(KERN_EMERG "\n\nCritical Temperature Shutdown\n\n");
 
 	while (1) {
 		if (dtm_fpga) {
@@ -149,59 +159,39 @@ static irqreturn_t temp_isr(int irq, void *context)
 			out_be32(dtm_fpga + 0x14, reset);
 		}
 
-		if (gpio_base) {
-			unsigned leds = in_be32(gpio_base);
-
-			/* green off, red toggle */
-			leds &= ~0x80000000;
-			leds ^=  0x40000000;
-
-			out_be32(gpio_base, leds);
-		}
-
+		gpio_set_value(red_led, value);
+		value ^= 1;
 		mdelay(500);
 	}
+
+	/* Not reached */
+	return IRQ_HANDLED;
 }
 
 static int pika_setup_leds(void)
 {
-	struct device_node *np;
-	const u32 *gpios;
-	int len;
+	struct device_node *np, *child;
 
-	np = of_find_compatible_node(NULL, NULL, "linux,gpio-led");
+	np = of_find_compatible_node(NULL, NULL, "gpio-leds");
 	if (!np) {
-		printk(KERN_ERR __FILE__ ": Unable to find gpio-led\n");
+		printk(KERN_ERR __FILE__ ": Unable to find leds\n");
 		return -ENOENT;
 	}
 
-	gpios = of_get_property(np, "gpios", &len);
-	of_node_put(np);
-	if (!gpios || len < 4) {
-		printk(KERN_ERR __FILE__
-		       ": Unable to get gpios property (%d)\n", len);
-		return -ENOENT;
-	}
+	for_each_child_of_node(np, child)
+		if (strcmp(child->name, "green") == 0)
+			green_led = of_get_gpio(child, 0);
+		else if (strcmp(child->name, "red") == 0)
+			red_led = of_get_gpio(child, 0);
 
-	np = of_find_node_by_phandle(gpios[0]);
-	if (!np) {
-		printk(KERN_ERR __FILE__ ": Unable to find gpio\n");
-		return -ENOENT;
-	}
-
-	gpio_base = of_iomap(np, 0);
 	of_node_put(np);
-	if (!gpio_base) {
-		printk(KERN_ERR __FILE__ ": Unable to map gpio");
-		return -ENOMEM;
-	}
 
 	return 0;
 }
 
-static void pika_setup_critical_temp(struct i2c_client *client)
+static void pika_setup_critical_temp(struct device_node *np,
+				     struct i2c_client *client)
 {
-	struct device_node *np;
 	int irq, rc;
 
 	/* Do this before enabling critical temp interrupt since we
@@ -213,14 +203,7 @@ static void pika_setup_critical_temp(struct i2c_client *client)
 	i2c_smbus_write_byte_data(client, 2, 65); /* Thigh */
 	i2c_smbus_write_byte_data(client, 3,  0); /* Tlow */
 
-	np = of_find_compatible_node(NULL, NULL, "adi,ad7414");
-	if (np == NULL) {
-		printk(KERN_ERR __FILE__ ": Unable to find ad7414\n");
-		return;
-	}
-
 	irq = irq_of_parse_and_map(np, 0);
-	of_node_put(np);
 	if (irq  == NO_IRQ) {
 		printk(KERN_ERR __FILE__ ": Unable to get ad7414 irq\n");
 		return;
@@ -249,32 +232,24 @@ static inline void pika_dtm_check_fan(void __iomem *fpga)
 
 static int pika_dtm_thread(void __iomem *fpga)
 {
-	struct i2c_adapter *adap;
+	struct device_node *np;
 	struct i2c_client *client;
 
-	/* We loop in case either driver was compiled as a module and
-	 * has not been insmoded yet.
-	 */
-	while (!(adap = i2c_get_adapter(0))) {
-		set_current_state(TASK_INTERRUPTIBLE);
-		schedule_timeout(HZ);
-	}
-
-	while (1) {
-		list_for_each_entry(client, &adap->clients, list)
-			if (client->addr == 0x4a)
-				goto found_it;
+	np = of_find_compatible_node(NULL, NULL, "adi,ad7414");
+	if (np == NULL)
+		return -ENOENT;
 
-		set_current_state(TASK_INTERRUPTIBLE);
-		schedule_timeout(HZ);
+	client = of_find_i2c_device_by_node(np);
+	if (client == NULL) {
+		of_node_put(np);
+		return -ENOENT;
 	}
 
-found_it:
-	i2c_put_adapter(adap);
+	pika_setup_critical_temp(np, client);
 
-	pika_setup_critical_temp(client);
+	of_node_put(np);
 
-	printk(KERN_INFO "PIKA DTM thread running.\n");
+	printk(KERN_INFO "Warp DTM thread running.\n");
 
 	while (!kthread_should_stop()) {
 		int val;
@@ -296,7 +271,6 @@ found_it:
 	return 0;
 }
 
-
 static int __init pika_dtm_start(void)
 {
 	struct task_struct *dtm_thread;
@@ -311,6 +285,9 @@ static int __init pika_dtm_start(void)
 	if (dtm_fpga == NULL)
 		return -ENOENT;
 
+	/* Must get post info before thread starts. */
+	warp_post_info();
+
 	dtm_thread = kthread_run(pika_dtm_thread, dtm_fpga, "pika-dtm");
 	if (IS_ERR(dtm_thread)) {
 		iounmap(dtm_fpga);
@@ -333,6 +310,8 @@ int pika_dtm_unregister_shutdown(void (*func)(void *arg), void *arg)
 	return 0;
 }
 
+machine_late_initcall(warp, warp_post_info);
+
 #endif
 
 EXPORT_SYMBOL(pika_dtm_register_shutdown);