Merge tag 'soc-late' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull late ARM soc platform updates from Olof Johansson:
 "This branch contains updates to OMAP and Marvell platforms (kirkwood,
  dove, mvebu) that came in after we had done the big multiplatform
  merges, so they were kept separate from the rest, and not separated
  into the traditional topics of cleanup/driver/platform features.

  For OMAP, the updates are:
   - Runtime PM conversions for the GPMC and RNG IP blocks
   - Preparation patches for the OMAP common clock framework conversion
   - clkdev alias additions required by other drivers
   - Performance Monitoring Unit (PMU) support for OMAP2, 3, and
     non-4430 OMAP4
   - OMAP hwmod code and data improvements
   - Preparation patches for the IOMMU runtime PM conversion
   - Preparation patches for OMAP4 full-chip retention support

  For Kirkwood/Dove/mvebu:
   - New driver for "address decoder controller" for mvebu, which is a
     piece of hardware that configures addressable devices and
     peripherals.  First user is the boot rom aperture on armada XP
     since it is needed for SMP support.
   - New device tree bindings for peripherals such as gpio-fan, iconnect
     nand, mv_cesa and the above address decoder controller.
   - Some defconfig updates, mostly to enable new DT boards and a few
     drivers.
   - New drivers using the pincontrol subsystem for dove, kirkwood and
     mvebu
   - New clean gpio driver for mvebu"

* tag 'soc-late' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (98 commits)
  ARM: mvebu: fix build breaks from multi-platform conversion
  ARM: OMAP4460/4470: PMU: Enable PMU for OMAP4460/70
  ARM: OMAP2+: PMU: Add runtime PM support
  ARM: OMAP4430: PMU: prepare to create PMU device via HWMOD
  ARM: OMAP2+: PMU: Convert OMAP2/3 devices to use HWMOD
  ARM: OMAP3: hwmod data: Add debugss HWMOD data
  ARM: OMAP2+: clockdomain/hwmod: add workaround for EMU clockdomain idle problems
  ARM: OMAP: Add a timer attribute for timers that can interrupt the DSP
  hwrng: OMAP: remove SoC restrictions from driver registration
  ARM: OMAP: split OMAP1, OMAP2+ RNG device registration
  hwrng: OMAP: convert to use runtime PM
  hwrng: OMAP: store per-device data in per-device variables, not file statics
  ARM: OMAP2xxx: hwmod/CM: add RNG integration data
  ARM: OMAP2+: gpmc: minimal driver support
  ARM: OMAP2+: gpmc: Adapt to HWMOD
  ARM: OMAP2/3: hwmod data: add gpmc
  ARM: OMAP4: hwmod data: add mmu hwmod for ipu and dsp
  ARM: OMAP3: hwmod data: add mmu data for iva and isp
  ARM: OMAP: iommu: fix including iommu.h without IOMMU_API selected
  ARM: OMAP4: hwmod data: add missing HWMOD_NO_IDLEST flags to some PRCM IP blocks
  ...

1 files changed, 95 insertions, 0 deletions

diff --git a/arch/arm/mach-omap2/pmu.c b/arch/arm/mach-omap2/pmu.c
new file mode 100644
index 000000000000..2a791766283d
--- /dev/null
+++ b/arch/arm/mach-omap2/pmu.c
@@ -0,0 +1,95 @@
+/*
+ * OMAP2 ARM Performance Monitoring Unit (PMU) Support
+ *
+ * Copyright (C) 2012 Texas Instruments, Inc.
+ *
+ * Contacts:
+ * Jon Hunter <jon-hunter@ti.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+#include <linux/pm_runtime.h>
+
+#include <asm/pmu.h>
+
+#include <plat/omap_hwmod.h>
+#include <plat/omap_device.h>
+
+static char *omap2_pmu_oh_names[] = {"mpu"};
+static char *omap3_pmu_oh_names[] = {"mpu", "debugss"};
+static char *omap4430_pmu_oh_names[] = {"l3_main_3", "l3_instr", "debugss"};
+static struct platform_device *omap_pmu_dev;
+
+/**
+ * omap2_init_pmu - creates and registers PMU platform device
+ * @oh_num:	Number of OMAP HWMODs required to create PMU device
+ * @oh_names:	Array of OMAP HWMODS names required to create PMU device
+ *
+ * Uses OMAP HWMOD framework to create and register an ARM PMU device
+ * from a list of HWMOD names passed. Currently supports OMAP2, OMAP3
+ * and OMAP4 devices.
+ */
+static int __init omap2_init_pmu(unsigned oh_num, char *oh_names[])
+{
+	int i;
+	struct omap_hwmod *oh[3];
+	char *dev_name = "arm-pmu";
+
+	if ((!oh_num) || (oh_num > 3))
+		return -EINVAL;
+
+	for (i = 0; i < oh_num; i++) {
+		oh[i] = omap_hwmod_lookup(oh_names[i]);
+		if (!oh[i]) {
+			pr_err("Could not look up %s hwmod\n", oh_names[i]);
+			return -ENODEV;
+		}
+	}
+
+	omap_pmu_dev = omap_device_build_ss(dev_name, -1, oh, oh_num, NULL, 0,
+					    NULL, 0, 0);
+	WARN(IS_ERR(omap_pmu_dev), "Can't build omap_device for %s.\n",
+	     dev_name);
+
+	if (IS_ERR(omap_pmu_dev))
+		return PTR_ERR(omap_pmu_dev);
+
+	pm_runtime_enable(&omap_pmu_dev->dev);
+
+	return 0;
+}
+
+static int __init omap_init_pmu(void)
+{
+	unsigned oh_num;
+	char **oh_names;
+
+	/*
+	 * To create an ARM-PMU device the following HWMODs
+	 * are required for the various OMAP2+ devices.
+	 *
+	 * OMAP24xx:	mpu
+	 * OMAP3xxx:	mpu, debugss
+	 * OMAP4430:	l3_main_3, l3_instr, debugss
+	 * OMAP4460/70:	mpu, debugss
+	 */
+	if (cpu_is_omap443x()) {
+		oh_num = ARRAY_SIZE(omap4430_pmu_oh_names);
+		oh_names = omap4430_pmu_oh_names;
+		/* XXX Remove the next two lines when CTI driver available */
+		pr_info("ARM PMU: not yet supported on OMAP4430 due to missing CTI driver\n");
+		return 0;
+	} else if (cpu_is_omap34xx() || cpu_is_omap44xx()) {
+		oh_num = ARRAY_SIZE(omap3_pmu_oh_names);
+		oh_names = omap3_pmu_oh_names;
+	} else {
+		oh_num = ARRAY_SIZE(omap2_pmu_oh_names);
+		oh_names = omap2_pmu_oh_names;
+	}
+
+	return omap2_init_pmu(oh_num, oh_names);
+}
+subsys_initcall(omap_init_pmu);