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

Pull ARM SoC driver changes from Olof Johansson:
 "This is a rather large set of patches for device drivers that for one
  reason or another the subsystem maintainer preferred to get merged
  through the arm-soc tree.  There are both new drivers as well as
  existing drivers that are getting converted from platform-specific
  code into standalone drivers using the appropriate subsystem specific
  interfaces.

  In particular, we can now have pinctrl, clk, clksource and irqchip
  drivers in one file per driver, without the need to call into platform
  specific interface, or to get called from platform specific code, as
  long as all information about the hardware is provided through a
  device tree.

  Most of the drivers we touch this time are for clocksource.  Since now
  most of them are part of drivers/clocksource, I expect that we won't
  have to touch these again from arm-soc and can let the clocksource
  maintainers take care of these in the future.

  Another larger part of this series is specific to the exynos platform,
  which is seeing some significant effort in upstreaming and
  modernization of its device drivers this time around, which
  unfortunately is also the cause for the churn and a lot of the merge
  conflicts.

  There is one new subsystem that gets merged as part of this series:
  the reset controller interface, which is a very simple interface for
  taking devices on the SoC out of reset or back into reset.  Patches to
  use this interface on i.MX follow later in this merge window, and we
  are going to have other platforms (at least tegra and sirf) get
  converted in 3.11.  This will let us get rid of platform specific
  callbacks in a number of platform independent device drivers."

* tag 'drivers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (256 commits)
  irqchip: s3c24xx: add missing __init annotations
  ARM: dts: Disable the RTC by default on exynos5
  clk: exynos5250: Fix parent clock for sclk_mmc{0,1,2,3}
  ARM: exynos: restore mach/regs-clock.h for exynos5
  clocksource: exynos_mct: fix build error on non-DT
  pinctrl: vt8500: wmt: Fix checking return value of pinctrl_register()
  irqchip: vt8500: Convert arch-vt8500 to new irqchip infrastructure
  reset: NULL deref on allocation failure
  reset: Add reset controller API
  dt: describe base reset signal binding
  ARM: EXYNOS: Add arm-pmu DT binding for exynos421x
  ARM: EXYNOS: Add arm-pmu DT binding for exynos5250
  ARM: EXYNOS: Enable PMUs for exynos4
  irqchip: exynos-combiner: Correct combined IRQs for exynos4
  irqchip: exynos-combiner: Add set_irq_affinity function for combiner_irq
  ARM: EXYNOS: fix compilation error introduced due to common clock migration
  clk: exynos5250: Fix divider values for sclk_mmc{0,1,2,3}
  clk: exynos4: export clocks required for fimc-is
  clk: samsung: Fix compilation error
  clk: tegra: fix enum tegra114_clk to match binding
  ...

1 files changed, 139 insertions, 0 deletions

diff --git a/drivers/clk/samsung/clk-exynos5440.c b/drivers/clk/samsung/clk-exynos5440.c
new file mode 100644
index 00000000000..a0a094c06f1
--- /dev/null
+++ b/drivers/clk/samsung/clk-exynos5440.c
@@ -0,0 +1,139 @@
+/*
+ * Copyright (c) 2013 Samsung Electronics Co., Ltd.
+ * Author: Thomas Abraham <thomas.ab@samsung.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Common Clock Framework support for Exynos5440 SoC.
+*/
+
+#include <linux/clk.h>
+#include <linux/clkdev.h>
+#include <linux/clk-provider.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+
+#include <plat/cpu.h>
+#include "clk.h"
+#include "clk-pll.h"
+
+#define CLKEN_OV_VAL		0xf8
+#define CPU_CLK_STATUS		0xfc
+#define MISC_DOUT1		0x558
+
+/*
+ * Let each supported clock get a unique id. This id is used to lookup the clock
+ * for device tree based platforms.
+ */
+enum exynos5440_clks {
+	none, xtal, arm_clk,
+
+	spi_baud = 16, pb0_250, pr0_250, pr1_250, b_250, b_125, b_200, sata,
+	usb, gmac0, cs250, pb0_250_o, pr0_250_o, pr1_250_o, b_250_o, b_125_o,
+	b_200_o, sata_o, usb_o, gmac0_o, cs250_o,
+
+	nr_clks,
+};
+
+/* parent clock name list */
+PNAME(mout_armclk_p)	= { "cplla", "cpllb" };
+PNAME(mout_spi_p)	= { "div125", "div200" };
+
+/* fixed rate clocks generated outside the soc */
+struct samsung_fixed_rate_clock exynos5440_fixed_rate_ext_clks[] __initdata = {
+	FRATE(none, "xtal", NULL, CLK_IS_ROOT, 0),
+};
+
+/* fixed rate clocks */
+struct samsung_fixed_rate_clock exynos5440_fixed_rate_clks[] __initdata = {
+	FRATE(none, "ppll", NULL, CLK_IS_ROOT, 1000000000),
+	FRATE(none, "usb_phy0", NULL, CLK_IS_ROOT, 60000000),
+	FRATE(none, "usb_phy1", NULL, CLK_IS_ROOT, 60000000),
+	FRATE(none, "usb_ohci12", NULL, CLK_IS_ROOT, 12000000),
+	FRATE(none, "usb_ohci48", NULL, CLK_IS_ROOT, 48000000),
+};
+
+/* fixed factor clocks */
+struct samsung_fixed_factor_clock exynos5440_fixed_factor_clks[] __initdata = {
+	FFACTOR(none, "div250", "ppll", 1, 4, 0),
+	FFACTOR(none, "div200", "ppll", 1, 5, 0),
+	FFACTOR(none, "div125", "div250", 1, 2, 0),
+};
+
+/* mux clocks */
+struct samsung_mux_clock exynos5440_mux_clks[] __initdata = {
+	MUX(none, "mout_spi", mout_spi_p, MISC_DOUT1, 5, 1),
+	MUX_A(arm_clk, "arm_clk", mout_armclk_p,
+			CPU_CLK_STATUS, 0, 1, "armclk"),
+};
+
+/* divider clocks */
+struct samsung_div_clock exynos5440_div_clks[] __initdata = {
+	DIV(spi_baud, "div_spi", "mout_spi", MISC_DOUT1, 3, 2),
+};
+
+/* gate clocks */
+struct samsung_gate_clock exynos5440_gate_clks[] __initdata = {
+	GATE(pb0_250, "pb0_250", "div250", CLKEN_OV_VAL, 3, 0, 0),
+	GATE(pr0_250, "pr0_250", "div250", CLKEN_OV_VAL, 4, 0, 0),
+	GATE(pr1_250, "pr1_250", "div250", CLKEN_OV_VAL, 5, 0, 0),
+	GATE(b_250, "b_250", "div250", CLKEN_OV_VAL, 9, 0, 0),
+	GATE(b_125, "b_125", "div125", CLKEN_OV_VAL, 10, 0, 0),
+	GATE(b_200, "b_200", "div200", CLKEN_OV_VAL, 11, 0, 0),
+	GATE(sata, "sata", "div200", CLKEN_OV_VAL, 12, 0, 0),
+	GATE(usb, "usb", "div200", CLKEN_OV_VAL, 13, 0, 0),
+	GATE(gmac0, "gmac0", "div200", CLKEN_OV_VAL, 14, 0, 0),
+	GATE(cs250, "cs250", "div250", CLKEN_OV_VAL, 19, 0, 0),
+	GATE(pb0_250_o, "pb0_250_o", "pb0_250", CLKEN_OV_VAL, 3, 0, 0),
+	GATE(pr0_250_o, "pr0_250_o", "pr0_250", CLKEN_OV_VAL, 4, 0, 0),
+	GATE(pr1_250_o, "pr1_250_o", "pr1_250", CLKEN_OV_VAL, 5, 0, 0),
+	GATE(b_250_o, "b_250_o", "b_250", CLKEN_OV_VAL, 9, 0, 0),
+	GATE(b_125_o, "b_125_o", "b_125", CLKEN_OV_VAL, 10, 0, 0),
+	GATE(b_200_o, "b_200_o", "b_200", CLKEN_OV_VAL, 11, 0, 0),
+	GATE(sata_o, "sata_o", "sata", CLKEN_OV_VAL, 12, 0, 0),
+	GATE(usb_o, "usb_o", "usb", CLKEN_OV_VAL, 13, 0, 0),
+	GATE(gmac0_o, "gmac0_o", "gmac", CLKEN_OV_VAL, 14, 0, 0),
+	GATE(cs250_o, "cs250_o", "cs250", CLKEN_OV_VAL, 19, 0, 0),
+};
+
+static __initdata struct of_device_id ext_clk_match[] = {
+	{ .compatible = "samsung,clock-xtal", .data = (void *)0, },
+	{},
+};
+
+/* register exynos5440 clocks */
+void __init exynos5440_clk_init(struct device_node *np)
+{
+	void __iomem *reg_base;
+
+	reg_base = of_iomap(np, 0);
+	if (!reg_base) {
+		pr_err("%s: failed to map clock controller registers,"
+			" aborting clock initialization\n", __func__);
+		return;
+	}
+
+	samsung_clk_init(np, reg_base, nr_clks, NULL, 0, NULL, 0);
+	samsung_clk_of_register_fixed_ext(exynos5440_fixed_rate_ext_clks,
+		ARRAY_SIZE(exynos5440_fixed_rate_ext_clks), ext_clk_match);
+
+	samsung_clk_register_pll2550x("cplla", "xtal", reg_base + 0x1c, 0x10);
+	samsung_clk_register_pll2550x("cpllb", "xtal", reg_base + 0x20, 0x10);
+
+	samsung_clk_register_fixed_rate(exynos5440_fixed_rate_clks,
+			ARRAY_SIZE(exynos5440_fixed_rate_clks));
+	samsung_clk_register_fixed_factor(exynos5440_fixed_factor_clks,
+			ARRAY_SIZE(exynos5440_fixed_factor_clks));
+	samsung_clk_register_mux(exynos5440_mux_clks,
+			ARRAY_SIZE(exynos5440_mux_clks));
+	samsung_clk_register_div(exynos5440_div_clks,
+			ARRAY_SIZE(exynos5440_div_clks));
+	samsung_clk_register_gate(exynos5440_gate_clks,
+			ARRAY_SIZE(exynos5440_gate_clks));
+
+	pr_info("Exynos5440: arm_clk = %ldHz\n", _get_rate("armclk"));
+	pr_info("exynos5440 clock initialization complete\n");
+}
+CLK_OF_DECLARE(exynos5440_clk, "samsung,exynos5440-clock", exynos5440_clk_init);