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[7/7] hw/arm/virt: Add gpio-keys node for Poweroff using DT

Message ID 1431404656-7180-8-git-send-email-shannon.zhao@linaro.org
State New
Headers show

Commit Message

Shannon Zhao May 12, 2015, 4:24 a.m. UTC 
From: Shannon Zhao <shannon.zhao@linaro.org>

Add a gpio-keys node. This is used for Poweroff for the systems which
use DT not ACPI.

Signed-off-by: Shannon Zhao <zhaoshenglong@huawei.com>
Signed-off-by: Shannon Zhao <shannon.zhao@linaro.org>
---
 hw/arm/virt.c | 15 +++++++++++++++
 1 file changed, 15 insertions(+)
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Patch

diff --git a/hw/arm/virt.c b/hw/arm/virt.c
index 354b020..a6f39c0 100644
--- a/hw/arm/virt.c
+++ b/hw/arm/virt.c
@@ -454,6 +454,7 @@  static void create_gpio(const VirtBoardInfo *vbi, qemu_irq *pic)
 
     pl061_dev = sysbus_create_simple("pl061", base, pic[irq]);
 
+    uint32_t phandle = qemu_fdt_alloc_phandle(vbi->fdt);
     nodename = g_strdup_printf("/pl061@%" PRIx64, base);
     qemu_fdt_add_subnode(vbi->fdt, nodename);
     qemu_fdt_setprop_sized_cells(vbi->fdt, nodename, "reg",
@@ -466,6 +467,20 @@  static void create_gpio(const VirtBoardInfo *vbi, qemu_irq *pic)
                            GIC_FDT_IRQ_FLAGS_LEVEL_HI);
     qemu_fdt_setprop_cell(vbi->fdt, nodename, "clocks", vbi->clock_phandle);
     qemu_fdt_setprop_string(vbi->fdt, nodename, "clock-names", "apb_pclk");
+    qemu_fdt_setprop_cell(vbi->fdt, nodename, "phandle", phandle);
+
+    qemu_fdt_add_subnode(vbi->fdt, "/gpio-keys");
+    qemu_fdt_setprop_string(vbi->fdt, "/gpio-keys", "compatible", "gpio-keys");
+    qemu_fdt_setprop_cell(vbi->fdt, "/gpio-keys", "#size-cells", 0);
+    qemu_fdt_setprop_cell(vbi->fdt, "/gpio-keys", "#address-cells", 1);
+    qemu_fdt_setprop(vbi->fdt, "/gpio-keys", "autorepeat", NULL, 0);
+
+    qemu_fdt_add_subnode(vbi->fdt, "/gpio-keys/poweroff");
+    qemu_fdt_setprop_string(vbi->fdt, "/gpio-keys/poweroff",
+                            "label", "GPIO Key Poweroff");
+    qemu_fdt_setprop_cell(vbi->fdt, "/gpio-keys/poweroff", "linux,code", 116);
+    qemu_fdt_setprop_cells(vbi->fdt, "/gpio-keys/poweroff",
+                           "gpios", phandle, 3, 0);
 
     /* connect powerdown request */
     qemu_register_powerdown_notifier(&virt_system_powerdown_notifier);