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authorLinus Torvalds <torvalds@linux-foundation.org>2009-06-14 13:42:43 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2009-06-14 13:42:43 -0700
commit2cf4d4514d5b43c1f3b64bd0ec8b9853bde8f1dc (patch)
treee35a625496acc6ac852846d40b8851186b9d1ac4 /arch/arm/mach-orion5x/ts78xx-setup.c
parent44b7532b8b464f606053562400719c9c21276037 (diff)
parentce53895a5d24e0ee19fb92f56c17323fb4c9ab27 (diff)
Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm
* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm: (417 commits) MAINTAINERS: EB110ATX is not ebsa110 MAINTAINERS: update Eric Miao's email address and status fb: add support of LCD display controller on pxa168/910 (base layer) [ARM] 5552/1: ep93xx get_uart_rate(): use EP93XX_SYSCON_PWRCNT and EP93XX_SYSCON_PWRCN [ARM] pxa/sharpsl_pm: zaurus needs generic pxa suspend/resume routines [ARM] 5544/1: Trust PrimeCell resource sizes [ARM] pxa/sharpsl_pm: cleanup of gpio-related code. [ARM] pxa/sharpsl_pm: drop set_irq_type calls [ARM] pxa/sharpsl_pm: merge pxa-specific code into generic one [ARM] pxa/sharpsl_pm: merge the two sharpsl_pm.c since it's now pxa specific [ARM] sa1100: remove unused collie_pm.c [ARM] pxa: fix the conflicting non-static declarations of global_gpios[] [ARM] 5550/1: Add default configure file for w90p910 platform [ARM] 5549/1: Add clock api for w90p910 platform. [ARM] 5548/1: Add gpio api for w90p910 platform [ARM] 5551/1: Add multi-function pin api for w90p910 platform. [ARM] Make ARM_VIC_NR depend on ARM_VIC [ARM] 5546/1: ARM PL022 SSP/SPI driver v3 ARM: OMAP4: SMP: Update defconfig for OMAP4430 ARM: OMAP4: SMP: Enable SMP support for OMAP4430 ...
Diffstat (limited to 'arch/arm/mach-orion5x/ts78xx-setup.c')
-rw-r--r--arch/arm/mach-orion5x/ts78xx-setup.c58
1 files changed, 58 insertions, 0 deletions
diff --git a/arch/arm/mach-orion5x/ts78xx-setup.c b/arch/arm/mach-orion5x/ts78xx-setup.c
index 9a6b397f972..5041d1bc26b 100644
--- a/arch/arm/mach-orion5x/ts78xx-setup.c
+++ b/arch/arm/mach-orion5x/ts78xx-setup.c
@@ -17,6 +17,7 @@
#include <linux/m48t86.h>
#include <linux/mtd/nand.h>
#include <linux/mtd/partitions.h>
+#include <linux/timeriomem-rng.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
@@ -270,12 +271,57 @@ static void ts78xx_ts_nand_unload(void)
}
/*****************************************************************************
+ * HW RNG
+ ****************************************************************************/
+#define TS_RNG_DATA (TS78XX_FPGA_REGS_PHYS_BASE | 0x044)
+
+static struct resource ts78xx_ts_rng_resource = {
+ .flags = IORESOURCE_MEM,
+ .start = TS_RNG_DATA,
+ .end = TS_RNG_DATA + 4 - 1,
+};
+
+static struct timeriomem_rng_data ts78xx_ts_rng_data = {
+ .period = 1000000, /* one second */
+};
+
+static struct platform_device ts78xx_ts_rng_device = {
+ .name = "timeriomem_rng",
+ .id = -1,
+ .dev = {
+ .platform_data = &ts78xx_ts_rng_data,
+ },
+ .resource = &ts78xx_ts_rng_resource,
+ .num_resources = 1,
+};
+
+static int ts78xx_ts_rng_load(void)
+{
+ int rc;
+
+ if (ts78xx_fpga.supports.ts_rng.init == 0) {
+ rc = platform_device_register(&ts78xx_ts_rng_device);
+ if (!rc)
+ ts78xx_fpga.supports.ts_rng.init = 1;
+ } else
+ rc = platform_device_add(&ts78xx_ts_rng_device);
+
+ return rc;
+};
+
+static void ts78xx_ts_rng_unload(void)
+{
+ platform_device_del(&ts78xx_ts_rng_device);
+}
+
+/*****************************************************************************
* FPGA 'hotplug' support code
****************************************************************************/
static void ts78xx_fpga_devices_zero_init(void)
{
ts78xx_fpga.supports.ts_rtc.init = 0;
ts78xx_fpga.supports.ts_nand.init = 0;
+ ts78xx_fpga.supports.ts_rng.init = 0;
}
static void ts78xx_fpga_supports(void)
@@ -289,10 +335,12 @@ static void ts78xx_fpga_supports(void)
case TS7800_REV_5:
ts78xx_fpga.supports.ts_rtc.present = 1;
ts78xx_fpga.supports.ts_nand.present = 1;
+ ts78xx_fpga.supports.ts_rng.present = 1;
break;
default:
ts78xx_fpga.supports.ts_rtc.present = 0;
ts78xx_fpga.supports.ts_nand.present = 0;
+ ts78xx_fpga.supports.ts_rng.present = 0;
}
}
@@ -316,6 +364,14 @@ static int ts78xx_fpga_load_devices(void)
}
ret |= tmp;
}
+ if (ts78xx_fpga.supports.ts_rng.present == 1) {
+ tmp = ts78xx_ts_rng_load();
+ if (tmp) {
+ printk(KERN_INFO "TS-78xx: RNG not registered\n");
+ ts78xx_fpga.supports.ts_rng.present = 0;
+ }
+ ret |= tmp;
+ }
return ret;
}
@@ -328,6 +384,8 @@ static int ts78xx_fpga_unload_devices(void)
ts78xx_ts_rtc_unload();
if (ts78xx_fpga.supports.ts_nand.present == 1)
ts78xx_ts_nand_unload();
+ if (ts78xx_fpga.supports.ts_rng.present == 1)
+ ts78xx_ts_rng_unload();
return ret;
}