linux-mips
[Top] [All Lists]

[PATCH] TXx9: Add TX4939 RNG support

To: linux-mips@linux-mips.org
Subject: [PATCH] TXx9: Add TX4939 RNG support
From: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Date: Wed, 27 May 2009 00:02:21 +0900
Cc: ralf@linux-mips.org, linux-kernel@vger.kernel.org
Original-recipient: rfc822;linux-mips@linux-mips.org
Sender: linux-mips-bounce@linux-mips.org
Add platform support for RNG of TX4939 SoC.

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
---
 arch/mips/include/asm/txx9/tx4939.h   |    1 +
 arch/mips/txx9/generic/setup_tx4939.c |   18 ++++++++++++++++++
 arch/mips/txx9/rbtx4939/setup.c       |    1 +
 3 files changed, 20 insertions(+), 0 deletions(-)

diff --git a/arch/mips/include/asm/txx9/tx4939.h 
b/arch/mips/include/asm/txx9/tx4939.h
index 050364d..3451499 100644
--- a/arch/mips/include/asm/txx9/tx4939.h
+++ b/arch/mips/include/asm/txx9/tx4939.h
@@ -547,5 +547,6 @@ void tx4939_ndfmc_init(unsigned int hold, unsigned int spw,
 void tx4939_dmac_init(int memcpy_chan0, int memcpy_chan1);
 void tx4939_aclc_init(void);
 void tx4939_sramc_init(void);
+void tx4939_rng_init(void);
 
 #endif /* __ASM_TXX9_TX4939_H */
diff --git a/arch/mips/txx9/generic/setup_tx4939.c 
b/arch/mips/txx9/generic/setup_tx4939.c
index df13a89..4b7293c 100644
--- a/arch/mips/txx9/generic/setup_tx4939.c
+++ b/arch/mips/txx9/generic/setup_tx4939.c
@@ -500,6 +500,24 @@ void __init tx4939_sramc_init(void)
                txx9_sramc_init(&tx4939_sram_resource);
 }
 
+#define TX4939_RNG_REG ((TX4939_CRYPTO_REG & 0xfffffffffULL) + 0xb0)
+void __init tx4939_rng_init(void)
+{
+       static struct resource res = {
+               .start = TX4939_RNG_REG,
+               .end = TX4939_RNG_REG + 0x30 - 1,
+               .flags = IORESOURCE_MEM,
+       };
+       static struct platform_device pdev = {
+               .name = "tx4939-rng",
+               .id = -1,
+               .num_resources = 1,
+               .resource = &res,
+       };
+
+       platform_device_register(&pdev);
+}
+
 static void __init tx4939_stop_unused_modules(void)
 {
        __u64 pcfg, rst = 0, ckd = 0;
diff --git a/arch/mips/txx9/rbtx4939/setup.c b/arch/mips/txx9/rbtx4939/setup.c
index b919696..c033ffe 100644
--- a/arch/mips/txx9/rbtx4939/setup.c
+++ b/arch/mips/txx9/rbtx4939/setup.c
@@ -502,6 +502,7 @@ static void __init rbtx4939_device_init(void)
        tx4939_aclc_init();
        platform_device_register_simple("txx9aclc-generic", -1, NULL, 0);
        tx4939_sramc_init();
+       tx4939_rng_init();
 }
 
 static void __init rbtx4939_setup(void)
-- 
1.5.6.5


<Prev in Thread] Current Thread [Next in Thread>