MIPS: AR7: Make board code register ar7_wdt as a platform device

This patch makes the board code register the ar7_wdt driver as a platform
device. We move the dynamic resource calculation here since the driver
should not be aware of the AR7 SoC version it is running on.

Signed-off-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

1 files changed, 32 insertions, 0 deletions

diff --git a/arch/mips/ar7/platform.c b/arch/mips/ar7/platform.c
index cf50fa29b198..e2278c04459d 100644
--- a/arch/mips/ar7/platform.c
+++ b/arch/mips/ar7/platform.c
@@ -417,6 +417,20 @@ static struct platform_device ar7_udc = {
         .num_resources = ARRAY_SIZE(usb_res),
 };
 
+static struct resource ar7_wdt_res = {
+        .name = "regs",
+        .start = -1, /* Filled at runtime */
+        .end = -1, /* Filled at runtime */
+        .flags = IORESOURCE_MEM,
+};
+
+static struct platform_device ar7_wdt = {
+        .id = -1,
+        .name  = "ar7_wdt",
+        .resource = &ar7_wdt_res,
+        .num_resources = 1,
+};
+
 static inline unsigned char char2hex(char h)
 {
         switch (h) {
@@ -487,6 +501,7 @@ static void __init detect_leds(void)
 
 static int __init ar7_register_devices(void)
 {
+        u16 chip_id;
         int res;
 #ifdef CONFIG_SERIAL_8250
         static struct uart_port uart_port[2];
@@ -565,6 +580,23 @@ static int __init ar7_register_devices(void)
 
         res = platform_device_register(&ar7_udc);
 
+        chip_id = ar7_chip_id();
+        switch (chip_id) {
+        case AR7_CHIP_7100:
+        case AR7_CHIP_7200:
+                ar7_wdt_res.start = AR7_REGS_WDT;
+                break;
+        case AR7_CHIP_7300:
+                ar7_wdt_res.start = UR8_REGS_WDT;
+                break;
+        default:
+                break;
+        }
+
+        ar7_wdt_res.end = ar7_wdt_res.start + 0x20;
+
+        res = platform_device_register(&ar7_wdt);
+
         return res;
 }
 arch_initcall(ar7_register_devices);