3 files changed, 74 insertions, 4 deletions

diff --git a/Documentation/powerpc/dts-bindings/fsl/board.txt b/Documentation/powerpc/dts-bindings/fsl/board.txt
index e8b5bc24d0ac..39e941515a36 100644
--- a/Documentation/powerpc/dts-bindings/fsl/board.txt
+++ b/Documentation/powerpc/dts-bindings/fsl/board.txt
@@ -20,12 +20,16 @@ Required properities:
 - compatible : should be "fsl,fpga-pixis".
 - reg : should contain the address and the length of the FPPGA register
   set.
+- interrupt-parent: should specify phandle for the interrupt controller.
+- interrupts : should specify event (wakeup) IRQ.
 
 Example (MPC8610HPCD):
 
         board-control@e8000000 {
                 compatible = "fsl,fpga-pixis";
                 reg = <0xe8000000 32>;
+                interrupt-parent = <&mpic>;
+                interrupts = <8 8>;
         };
 
 * Freescale BCSR GPIO banks
diff --git a/arch/powerpc/boot/dts/mpc8610_hpcd.dts b/arch/powerpc/boot/dts/mpc8610_hpcd.dts
index f468d215f716..9535ce68caae 100644
--- a/arch/powerpc/boot/dts/mpc8610_hpcd.dts
+++ b/arch/powerpc/boot/dts/mpc8610_hpcd.dts
@@ -35,6 +35,8 @@
                         i-cache-line-size = <32>;
                         d-cache-size = <32768>;         // L1
                         i-cache-size = <32768>;         // L1
+                        sleep = <&pmc 0x00008000 0      // core
+                                 &pmc 0x00004000 0>;    // timebase
                         timebase-frequency = <0>;       // From uboot
                         bus-frequency = <0>;            // From uboot
                         clock-frequency = <0>;          // From uboot
@@ -60,6 +62,7 @@
                           5 0 0xe8480000 0x00008000
                           6 0 0xe84c0000 0x00008000
                           3 0 0xe8000000 0x00000020>;
+                sleep = <&pmc 0x08000000 0>;
 
                 flash@0,0 {
                         compatible = "cfi-flash";
@@ -105,6 +108,8 @@
                         compatible = "fsl,fpga-pixis";
                         reg = <3 0 0x20>;
                         ranges = <0 3 0 0x20>;
+                        interrupt-parent = <&mpic>;
+                        interrupts = <8 8>;
 
                         sdcsr_pio: gpio-controller@a {
                                 #gpio-cells = <2>;
@@ -163,6 +168,7 @@
                         reg = <0x3100 0x100>;
                         interrupts = <43 2>;
                         interrupt-parent = <&mpic>;
+                        sleep = <&pmc 0x00000004 0>;
                         dfsrr;
                 };
 
@@ -174,6 +180,7 @@
                         clock-frequency = <0>;
                         interrupts = <42 2>;
                         interrupt-parent = <&mpic>;
+                        sleep = <&pmc 0x00000002 0>;
                 };
 
                 serial1: serial@4600 {
@@ -184,6 +191,7 @@
                         clock-frequency = <0>;
                         interrupts = <42 2>;
                         interrupt-parent = <&mpic>;
+                        sleep = <&pmc 0x00000008 0>;
                 };
 
                 spi@7000 {
@@ -196,6 +204,7 @@
                         interrupt-parent = <&mpic>;
                         mode = "cpu";
                         gpios = <&sdcsr_pio 7 0>;
+                        sleep = <&pmc 0x00000800 0>;
 
                         mmc-slot@0 {
                                 compatible = "fsl,mpc8610hpcd-mmc-slot",
@@ -213,6 +222,7 @@
                         reg = <0x2c000 100>;
                         interrupts = <72 2>;
                         interrupt-parent = <&mpic>;
+                        sleep = <&pmc 0x04000000 0>;
                 };
 
                 mpic: interrupt-controller@40000 {
@@ -241,9 +251,18 @@
                 };
 
                 global-utilities@e0000 {
+                        #address-cells = <1>;
+                        #size-cells = <1>;
                         compatible = "fsl,mpc8610-guts";
                         reg = <0xe0000 0x1000>;
+                        ranges = <0 0xe0000 0x1000>;
                         fsl,has-rstcr;
+
+                        pmc: power@70 {
+                                compatible = "fsl,mpc8610-pmc",
+                                             "fsl,mpc8641d-pmc";
+                                reg = <0x70 0x20>;
+                        };
                 };
 
                 wdt@e4000 {
@@ -262,6 +281,7 @@
                         fsl,playback-dma = <&dma00>;
                         fsl,capture-dma = <&dma01>;
                         fsl,fifo-depth = <8>;
+                        sleep = <&pmc 0 0x08000000>;
                 };
 
                 ssi@16100 {
@@ -271,6 +291,7 @@
                         interrupt-parent = <&mpic>;
                         interrupts = <63 2>;
                         fsl,fifo-depth = <8>;
+                        sleep = <&pmc 0 0x04000000>;
                 };
 
                 dma@21300 {
@@ -280,6 +301,7 @@
                         cell-index = <0>;
                         reg = <0x21300 0x4>; /* DMA general status register */
                         ranges = <0x0 0x21100 0x200>;
+                        sleep = <&pmc 0x00000400 0>;
 
                         dma00: dma-channel@0 {
                                 compatible = "fsl,mpc8610-dma-channel",
@@ -322,6 +344,7 @@
                         cell-index = <1>;
                         reg = <0xc300 0x4>; /* DMA general status register */
                         ranges = <0x0 0xc100 0x200>;
+                        sleep = <&pmc 0x00000200 0>;
 
                         dma-channel@0 {
                                 compatible = "fsl,mpc8610-dma-channel",
@@ -369,6 +392,7 @@
                 bus-range = <0 0>;
                 ranges = <0x02000000 0x0 0x80000000 0x80000000 0x0 0x10000000
                           0x01000000 0x0 0x00000000 0xe1000000 0x0 0x00100000>;
+                sleep = <&pmc 0x80000000 0>;
                 clock-frequency = <33333333>;
                 interrupt-parent = <&mpic>;
                 interrupts = <24 2>;
@@ -398,6 +422,7 @@
                 bus-range = <1 3>;
                 ranges = <0x02000000 0x0 0xa0000000 0xa0000000 0x0 0x10000000
                           0x01000000 0x0 0x00000000 0xe3000000 0x0 0x00100000>;
+                sleep = <&pmc 0x40000000 0>;
                 clock-frequency = <33333333>;
                 interrupt-parent = <&mpic>;
                 interrupts = <26 2>;
@@ -474,6 +499,7 @@
                                  0x0000 0 0 4 &mpic 7 1>;
                 interrupt-parent = <&mpic>;
                 interrupts = <25 2>;
+                sleep = <&pmc 0x20000000 0>;
                 clock-frequency = <33333333>;
         };
 };
diff --git a/arch/powerpc/platforms/86xx/mpc8610_hpcd.c b/arch/powerpc/platforms/86xx/mpc8610_hpcd.c
index 627908a4cd77..5abe137f6309 100644
--- a/arch/powerpc/platforms/86xx/mpc8610_hpcd.c
+++ b/arch/powerpc/platforms/86xx/mpc8610_hpcd.c
@@ -19,6 +19,7 @@
 #include <linux/stddef.h>
 #include <linux/kernel.h>
 #include <linux/pci.h>
+#include <linux/interrupt.h>
 #include <linux/kdev_t.h>
 #include <linux/delay.h>
 #include <linux/seq_file.h>
@@ -41,10 +42,46 @@
 
 #include "mpc86xx.h"
 
+static struct device_node *pixis_node;
 static unsigned char *pixis_bdcfg0, *pixis_arch;
 
+#ifdef CONFIG_SUSPEND
+static irqreturn_t mpc8610_sw9_irq(int irq, void *data)
+{
+        pr_debug("%s: PIXIS' event (sw9/wakeup) IRQ handled\n", __func__);
+        return IRQ_HANDLED;
+}
+
+static void __init mpc8610_suspend_init(void)
+{
+        int irq;
+        int ret;
+
+        if (!pixis_node)
+                return;
+
+        irq = irq_of_parse_and_map(pixis_node, 0);
+        if (!irq) {
+                pr_err("%s: can't map pixis event IRQ.\n", __func__);
+                return;
+        }
+
+        ret = request_irq(irq, mpc8610_sw9_irq, 0, "sw9/wakeup", NULL);
+        if (ret) {
+                pr_err("%s: can't request pixis event IRQ: %d\n",
+                       __func__, ret);
+                irq_dispose_mapping(irq);
+        }
+
+        enable_irq_wake(irq);
+}
+#else
+static inline void mpc8610_suspend_init(void) { }
+#endif /* CONFIG_SUSPEND */
+
 static struct of_device_id __initdata mpc8610_ids[] = {
         { .compatible = "fsl,mpc8610-immr", },
+        { .compatible = "fsl,mpc8610-guts", },
         { .compatible = "simple-bus", },
         { .compatible = "gianfar", },
         {}
@@ -55,6 +92,9 @@ static int __init mpc8610_declare_of_platform_devices(void)
         /* Firstly, register PIXIS GPIOs. */
         simple_gpiochip_init("fsl,fpga-pixis-gpio-bank");
 
+        /* Enable wakeup on PIXIS' event IRQ. */
+        mpc8610_suspend_init();
+
         /* Without this call, the SSI device driver won't get probed. */
         of_platform_bus_probe(NULL, mpc8610_ids, NULL);
 
@@ -250,10 +290,10 @@ static void __init mpc86xx_hpcd_setup_arch(void)
         diu_ops.set_sysfs_monitor_port  = mpc8610hpcd_set_sysfs_monitor_port;
 #endif
 
-        np = of_find_compatible_node(NULL, NULL, "fsl,fpga-pixis");
-        if (np) {
-                of_address_to_resource(np, 0, &r);
-                of_node_put(np);
+        pixis_node = of_find_compatible_node(NULL, NULL, "fsl,fpga-pixis");
+        if (pixis_node) {
+                of_address_to_resource(pixis_node, 0, &r);
+                of_node_put(pixis_node);
                 pixis = ioremap(r.start, 32);
                 if (!pixis) {
                         printk(KERN_ERR "Err: can't map FPGA cfg register!\n");