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

Pull ARM SoC driver updates from Arnd Bergmann:
 "These are changes for drivers that are intimately tied to some SoC and
  for some reason could not get merged through the respective subsystem
  maintainer tree.

  Most of the new code is for the Keystone Navigator driver, which is
  new base support that is going to be needed for their hardware
  accelerated network driver and other units.

  Most of the commits are for moving old code around from at91 and omap
  for things that are done in device drivers nowadays.

   - at91: move reset, poweroff, memory and clocksource code into
     drivers directories
   - socfpga: add edac driver (through arm-soc, as requested by Boris)
   - omap: move omap-intc code to drivers/irqchip
   - sunxi: added an RTC driver for sun6i
   - omap: mailbox driver related changes
   - keystone: support for the "Navigator" component
   - versatile: new reboot, led and soc drivers"

* tag 'drivers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (92 commits)
  bus: arm-ccn: Fix spurious warning message
  leds: add device tree bindings for register bit LEDs
  soc: add driver for the ARM RealView
  power: reset: driver for the Versatile syscon reboot
  leds: add a driver for syscon-based LEDs
  drivers/soc: ti: fix build break with modules
  MAINTAINERS: Add Keystone Multicore Navigator drivers entry
  soc: ti: add Keystone Navigator DMA support
  Documentation: dt: soc: add Keystone Navigator DMA bindings
  soc: ti: add Keystone Navigator QMSS driver
  Documentation: dt: soc: add Keystone Navigator QMSS bindings
  rtc: sunxi: Depend on platforms sun4i/sun7i that actually have the rtc
  rtc: sun6i: Add sun6i RTC driver
  irqchip: omap-intc: remove unnecessary comments
  irqchip: omap-intc: correct maximum number or MIR registers
  irqchip: omap-intc: enable TURBO idle mode
  irqchip: omap-intc: enable IP protection
  irqchip: omap-intc: remove unnecesary of_address_to_resource() call
  irqchip: omap-intc: comment style cleanup
  irqchip: omap-intc: minor improvement to omap_irq_pending()
  ...

3 files changed, 109 insertions, 0 deletions

diff --git a/drivers/memory/Kconfig b/drivers/memory/Kconfig
index fab81a143bd7..6d91c27fd4c8 100644
--- a/drivers/memory/Kconfig
+++ b/drivers/memory/Kconfig
@@ -7,6 +7,16 @@ menuconfig MEMORY
 
 if MEMORY
 
+config ATMEL_SDRAMC
+	bool "Atmel (Multi-port DDR-)SDRAM Controller"
+	default y
+	depends on ARCH_AT91 && OF
+	help
+	  This driver is for Atmel SDRAM Controller or Atmel Multi-port
+	  DDR-SDRAM Controller available on Atmel AT91SAM9 and SAMA5 SoCs.
+	  Starting with the at91sam9g45, this controller supports SDR, DDR and
+	  LP-DDR memories.
+
 config TI_AEMIF
 	tristate "Texas Instruments AEMIF driver"
 	depends on (ARCH_DAVINCI || ARCH_KEYSTONE) && OF
diff --git a/drivers/memory/Makefile b/drivers/memory/Makefile
index 4055c47f45ab..c32d31981be3 100644
--- a/drivers/memory/Makefile
+++ b/drivers/memory/Makefile
@@ -5,6 +5,7 @@
 ifeq ($(CONFIG_DDR),y)
 obj-$(CONFIG_OF)		+= of_memory.o
 endif
+obj-$(CONFIG_ATMEL_SDRAMC)	+= atmel-sdramc.o
 obj-$(CONFIG_TI_AEMIF)		+= ti-aemif.o
 obj-$(CONFIG_TI_EMIF)		+= emif.o
 obj-$(CONFIG_FSL_CORENET_CF)	+= fsl-corenet-cf.o
diff --git a/drivers/memory/atmel-sdramc.c b/drivers/memory/atmel-sdramc.c
new file mode 100644
index 000000000000..fed04e8efe75
--- /dev/null
+++ b/drivers/memory/atmel-sdramc.c
@@ -0,0 +1,98 @@
+/*
+ * Atmel (Multi-port DDR-)SDRAM Controller driver
+ *
+ * Copyright (C) 2014 Atmel
+ *
+ * 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 version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include <linux/clk.h>
+#include <linux/err.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of_platform.h>
+#include <linux/platform_device.h>
+
+struct at91_ramc_caps {
+	bool has_ddrck;
+	bool has_mpddr_clk;
+};
+
+static const struct at91_ramc_caps at91rm9200_caps = { };
+
+static const struct at91_ramc_caps at91sam9g45_caps = {
+	.has_ddrck = 1,
+	.has_mpddr_clk = 0,
+};
+
+static const struct at91_ramc_caps sama5d3_caps = {
+	.has_ddrck = 1,
+	.has_mpddr_clk = 1,
+};
+
+static const struct of_device_id atmel_ramc_of_match[] = {
+	{ .compatible = "atmel,at91rm9200-sdramc", .data = &at91rm9200_caps, },
+	{ .compatible = "atmel,at91sam9260-sdramc", .data = &at91rm9200_caps, },
+	{ .compatible = "atmel,at91sam9g45-ddramc", .data = &at91sam9g45_caps, },
+	{ .compatible = "atmel,sama5d3-ddramc", .data = &sama5d3_caps, },
+	{},
+};
+MODULE_DEVICE_TABLE(of, atmel_ramc_of_match);
+
+static int atmel_ramc_probe(struct platform_device *pdev)
+{
+	const struct of_device_id *match;
+	const struct at91_ramc_caps *caps;
+	struct clk *clk;
+
+	match = of_match_device(atmel_ramc_of_match, &pdev->dev);
+	caps = match->data;
+
+	if (caps->has_ddrck) {
+		clk = devm_clk_get(&pdev->dev, "ddrck");
+		if (IS_ERR(clk))
+			return PTR_ERR(clk);
+		clk_prepare_enable(clk);
+	}
+
+	if (caps->has_mpddr_clk) {
+		clk = devm_clk_get(&pdev->dev, "mpddr");
+		if (IS_ERR(clk)) {
+			pr_err("AT91 RAMC: couldn't get mpddr clock\n");
+			return PTR_ERR(clk);
+		}
+		clk_prepare_enable(clk);
+	}
+
+	return 0;
+}
+
+static struct platform_driver atmel_ramc_driver = {
+	.probe		= atmel_ramc_probe,
+	.driver		= {
+		.name	= "atmel-ramc",
+		.owner	= THIS_MODULE,
+		.of_match_table = atmel_ramc_of_match,
+	},
+};
+
+static int __init atmel_ramc_init(void)
+{
+	return platform_driver_register(&atmel_ramc_driver);
+}
+module_init(atmel_ramc_init);
+
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Alexandre Belloni <alexandre.belloni@free-electrons.com>");
+MODULE_DESCRIPTION("Atmel (Multi-port DDR-)SDRAM Controller");