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[PATCH 4/5 v2] MIPS: BCM63XX: add RNG driver platform_device stub

To: ralf@linux-mips.org
Subject: [PATCH 4/5 v2] MIPS: BCM63XX: add RNG driver platform_device stub
From: Florian Fainelli <florian@openwrt.org>
Date: Tue, 31 Jan 2012 15:12:24 +0100
Cc: linux-mips@linux-mips.org, mpm@selenic.com, herbert@gondor.apana.org.au, Florian Fainelli <florian@openwrt.org>
In-reply-to: <1328019145-5946-1-git-send-email-florian@openwrt.org>
References: <1328019145-5946-1-git-send-email-florian@openwrt.org>
Sender: linux-mips-bounce@linux-mips.org
Signed-off-by: Florian Fainelli <florian@openwrt.org>
---
Changes since v1:
- renamed TRNG -> RNG, trng -> rng
- fixed platform_device identifier since there is only one device

 arch/mips/bcm63xx/Makefile  |    4 ++--
 arch/mips/bcm63xx/dev-rng.c |   40 ++++++++++++++++++++++++++++++++++++++++
 2 files changed, 42 insertions(+), 2 deletions(-)
 create mode 100644 arch/mips/bcm63xx/dev-rng.c

diff --git a/arch/mips/bcm63xx/Makefile b/arch/mips/bcm63xx/Makefile
index 4049cd5..349b206 100644
--- a/arch/mips/bcm63xx/Makefile
+++ b/arch/mips/bcm63xx/Makefile
@@ -1,6 +1,6 @@
 obj-y          += clk.o cpu.o cs.o gpio.o irq.o prom.o setup.o timer.o \
-                  dev-dsp.o dev-enet.o dev-pcmcia.o dev-spi.o dev-uart.o \
-                  dev-wdt.o
+                  dev-dsp.o dev-enet.o dev-pcmcia.o dev-rng.o dev-spi.o \
+                  dev-uart.o dev-wdt.o
 obj-$(CONFIG_EARLY_PRINTK)     += early_printk.o
 
 obj-y          += boards/
diff --git a/arch/mips/bcm63xx/dev-rng.c b/arch/mips/bcm63xx/dev-rng.c
new file mode 100644
index 0000000..d277b4d
--- /dev/null
+++ b/arch/mips/bcm63xx/dev-rng.c
@@ -0,0 +1,40 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2011 Florian Fainelli <florian@openwrt.org>
+ */
+
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/platform_device.h>
+#include <bcm63xx_cpu.h>
+
+static struct resource rng_resources[] = {
+       {
+               .start          = -1, /* filled at runtime */
+               .end            = -1, /* filled at runtime */
+               .flags          = IORESOURCE_MEM,
+       },
+};
+
+static struct platform_device bcm63xx_rng_device = {
+       .name           = "bcm63xx-rng",
+       .id             = -1,
+       .num_resources  = ARRAY_SIZE(rng_resources),
+       .resource       = rng_resources,
+};
+
+int __init bcm63xx_rng_register(void)
+{
+       if (!BCMCPU_IS_6368())
+               return -ENODEV;
+
+       rng_resources[0].start = bcm63xx_regset_address(RSET_RNG);
+       rng_resources[0].end = rng_resources[0].start;
+       rng_resources[0].end += RSET_RNG_SIZE - 1;
+
+       return platform_device_register(&bcm63xx_rng_device);
+}
+arch_initcall(bcm63xx_rng_register);
-- 
1.7.5.4


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