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Commit 45001e92 authored by Alan Carvalho de Assis's avatar Alan Carvalho de Assis Committed by Sascha Hauer
Browse files

i.MX31: Add hw-random for RNGA 



This hw-random driver add support to RNGA hardware found
on some i.MX processors.

Signed-off-by: default avatarAlan Carvalho de Assis <acassis@gmail.com>
Acked-by: default avatarMatt Mackall <mpm@selenic.com>
Signed-off-by: default avatarSascha Hauer <s.hauer@pengutronix.de>
parent 220bbcea

arch/arm/mach-mx3/Kconfig

+1 −0
Original line number Diff line number Diff line 
if ARCH_MX3



config ARCH_MX31

	select ARCH_HAS_RNGA

	bool



config ARCH_MX35

arch/arm/mach-mx3/devices.c

+17 −0
Original line number Diff line number Diff line
@@ -23,6 +23,7 @@ 
#include <linux/gpio.h>

#include <mach/hardware.h>

#include <mach/irqs.h>

#include <mach/common.h>

#include <mach/imx-uart.h>



#include "devices.h"
@@ -283,6 +284,21 @@ struct platform_device mxcsdhc_device1 = { 
	.num_resources = ARRAY_SIZE(mxcsdhc1_resources),

	.resource = mxcsdhc1_resources,

};



static struct resource rnga_resources[] = {

	{

		.start = RNGA_BASE_ADDR,

		.end = RNGA_BASE_ADDR + 0x28,

		.flags = IORESOURCE_MEM,

	},

};



struct platform_device mxc_rnga_device = {

	.name = "mxc_rnga",

	.id = -1,

	.num_resources = 1,

	.resource = rnga_resources,

};

#endif /* CONFIG_ARCH_MX31 */



/* i.MX31 Image Processing Unit */
@@ -359,6 +375,7 @@ static int mx3_devices_init(void) 
	if (cpu_is_mx31()) {

		mxc_nand_resources[0].start = MX31_NFC_BASE_ADDR;

		mxc_nand_resources[0].end = MX31_NFC_BASE_ADDR + 0xfff;

		mxc_register_device(&mxc_rnga_device, NULL);

	}

	if (cpu_is_mx35()) {

		mxc_nand_resources[0].start = MX35_NFC_BASE_ADDR;

arch/arm/plat-mxc/Kconfig

+4 −0
Original line number Diff line number Diff line
@@ -52,6 +52,10 @@ config MXC_PWM 
	help

	  Enable support for the i.MX PWM controller(s).



config ARCH_HAS_RNGA

	bool

	depends on ARCH_MXC



config ARCH_MXC_IOMUX_V3

	bool

endif

drivers/char/hw_random/Kconfig

+12 −0
Original line number Diff line number Diff line
@@ -148,3 +148,15 @@ config HW_RANDOM_VIRTIO 


	  To compile this driver as a module, choose M here: the

	  module will be called virtio-rng.  If unsure, say N.



config HW_RANDOM_MXC_RNGA

	tristate "Freescale i.MX RNGA Random Number Generator"

	depends on HW_RANDOM && ARCH_HAS_RNGA

	---help---

	  This driver provides kernel-side support for the Random Number

	  Generator hardware found on Freescale i.MX processors.



	  To compile this driver as a module, choose M here: the

	  module will be called mxc-rnga.



	  If unsure, say Y.

drivers/char/hw_random/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -15,3 +15,4 @@ obj-$(CONFIG_HW_RANDOM_IXP4XX) += ixp4xx-rng.o 
obj-$(CONFIG_HW_RANDOM_OMAP) += omap-rng.o

obj-$(CONFIG_HW_RANDOM_PASEMI) += pasemi-rng.o

obj-$(CONFIG_HW_RANDOM_VIRTIO) += virtio-rng.o

obj-$(CONFIG_HW_RANDOM_MXC_RNGA) += mxc-rnga.o