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authorPaul Walmsley <paul@pwsan.com>2012-09-23 17:28:27 -0600
committerPaul Walmsley <paul@pwsan.com>2012-09-23 17:28:27 -0600
commit4848d460a7d4b2b5b22afda16b713cb753affa12 (patch)
tree81c62d710d73123a59a9b383964ba4fff7e65953
parent665d92fa85b5cb4c0a3f36524ac6cc8f9e3d9c2d (diff)
downloadop-kernel-dev-4848d460a7d4b2b5b22afda16b713cb753affa12.zip
op-kernel-dev-4848d460a7d4b2b5b22afda16b713cb753affa12.tar.gz
ARM: OMAP: split OMAP1, OMAP2+ RNG device registration
Move the OMAP1-specific RNG device creation off to mach-omap1/devices.c, and create a omap_device-backed registration function for OMAP2+ devices in mach-omap2/devices.c. As a nice side-benefit, we can also get rid of arch/arm/plat-omap/devices.c, thanks to some recent changes from Tony. One change from the previous behavior is that the RNG devices are now registered unconditionally. This should allow the RNG drivers to be loaded as modules, even if the original kernel was not built that way. Signed-off-by: Paul Walmsley <paul@pwsan.com>
-rw-r--r--arch/arm/mach-omap1/devices.c25
-rw-r--r--arch/arm/mach-omap2/devices.c18
2 files changed, 43 insertions, 0 deletions
diff --git a/arch/arm/mach-omap1/devices.c b/arch/arm/mach-omap1/devices.c
index 05fdbd9..23a0b11 100644
--- a/arch/arm/mach-omap1/devices.c
+++ b/arch/arm/mach-omap1/devices.c
@@ -357,6 +357,30 @@ static inline void omap_init_uwire(void) {}
#endif
+#define OMAP1_RNG_BASE 0xfffe5000
+
+static struct resource omap1_rng_resources[] = {
+ {
+ .start = OMAP1_RNG_BASE,
+ .end = OMAP1_RNG_BASE + 0x4f,
+ .flags = IORESOURCE_MEM,
+ },
+};
+
+static struct platform_device omap1_rng_device = {
+ .name = "omap_rng",
+ .id = -1,
+ .num_resources = ARRAY_SIZE(omap1_rng_resources),
+ .resource = omap1_rng_resources,
+};
+
+static void omap1_init_rng(void)
+{
+ (void) platform_device_register(&omap1_rng_device);
+}
+
+/*-------------------------------------------------------------------------*/
+
/*
* This gets called after board-specific INIT_MACHINE, and initializes most
* on-chip peripherals accessible on this board (except for few like USB):
@@ -395,6 +419,7 @@ static int __init omap1_init_devices(void)
omap_init_spi100k();
omap_init_sti();
omap_init_uwire();
+ omap1_init_rng();
return 0;
}
diff --git a/arch/arm/mach-omap2/devices.c b/arch/arm/mach-omap2/devices.c
index 6ef4010..33bdbe4 100644
--- a/arch/arm/mach-omap2/devices.c
+++ b/arch/arm/mach-omap2/devices.c
@@ -462,6 +462,23 @@ static void omap_init_pmu(void)
platform_device_register(&omap_pmu_device);
}
+/**
+ * omap_init_rng - bind the RNG hwmod to the RNG omap_device
+ *
+ * Bind the RNG hwmod to the RNG omap_device. No return value.
+ */
+static void omap_init_rng(void)
+{
+ struct omap_hwmod *oh;
+ struct platform_device *pdev;
+
+ oh = omap_hwmod_lookup("rng");
+ if (!oh)
+ return;
+
+ pdev = omap_device_build("omap_rng", -1, oh, NULL, 0, NULL, 0, 0);
+ WARN(IS_ERR(pdev), "Can't build omap_device for omap_rng\n");
+}
#if defined(CONFIG_CRYPTO_DEV_OMAP_SHAM) || defined(CONFIG_CRYPTO_DEV_OMAP_SHAM_MODULE)
@@ -649,6 +666,7 @@ static int __init omap2_init_devices(void)
}
omap_init_pmu();
omap_init_sti();
+ omap_init_rng();
omap_init_sham();
omap_init_aes();
omap_init_vout();
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