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

Pull ARM SoC updates from Olof Johansson:
 "This contains the bulk of new SoC development for this merge window.

  Two new platforms have been added, the sunxi platforms (Allwinner A1x
  SoCs) by Maxime Ripard, and a generic Broadcom platform for a new
  series of ARMv7 platforms from them, where the hope is that we can
  keep the platform code generic enough to have them all share one mach
  directory.  The new Broadcom platform is contributed by Christian
  Daudt.

  Highbank has grown support for Calxeda's next generation of hardware,
  ECX-2000.

  clps711x has seen a lot of cleanup from Alexander Shiyan, and he's
  also taken on maintainership of the platform.

  Beyond this there has been a bunch of work from a number of people on
  converting more platforms to IRQ domains, pinctrl conversion, cleanup
  and general feature enablement across most of the active platforms."

Fix up trivial conflicts as per Olof.

* tag 'soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (174 commits)
  mfd: vexpress-sysreg: Remove LEDs code
  irqchip: irq-sunxi: Add terminating entry for sunxi_irq_dt_ids
  clocksource: sunxi_timer: Add terminating entry for sunxi_timer_dt_ids
  irq: versatile: delete dangling variable
  ARM: sunxi: add missing include for mdelay()
  ARM: EXYNOS: Avoid early use of of_machine_is_compatible()
  ARM: dts: add node for PL330 MDMA1 controller for exynos4
  ARM: EXYNOS: Add support for secondary CPU bring-up on Exynos4412
  ARM: EXYNOS: add UART3 to DEBUG_LL ports
  ARM: S3C24XX: Add clkdev entry for camif-upll clock
  ARM: SAMSUNG: Add s3c24xx/s3c64xx CAMIF GPIO setup helpers
  ARM: sunxi: Add missing sun4i.dtsi file
  pinctrl: samsung: Do not initialise statics to 0
  ARM i.MX6: remove gate_mask from pllv3
  ARM i.MX6: Fix ethernet PLL clocks
  ARM i.MX6: rename PLLs according to datasheet
  ARM i.MX6: Add pwm support
  ARM i.MX51: Add pwm support
  ARM i.MX53: Add pwm support
  ARM: mx5: Replace clk_register_clkdev with clock DT lookup
  ...

1 files changed, 214 insertions, 0 deletions

diff --git a/arch/arm/mach-tegra/tegra30_clocks.c b/arch/arm/mach-tegra/tegra30_clocks.c
index 000239d68393..efc000e32e1c 100644
--- a/arch/arm/mach-tegra/tegra30_clocks.c
+++ b/arch/arm/mach-tegra/tegra30_clocks.c
@@ -31,6 +31,8 @@
 
 #include <asm/clkdev.h>
 
+#include <mach/powergate.h>
+
 #include "clock.h"
 #include "fuse.h"
 #include "iomap.h"
@@ -309,6 +311,31 @@
 #define CPU_CLOCK(cpu)	(0x1 << (8 + cpu))
 #define CPU_RESET(cpu)	(0x1111ul << (cpu))
 
+#define CLK_RESET_CCLK_BURST	0x20
+#define CLK_RESET_CCLK_DIVIDER  0x24
+#define CLK_RESET_PLLX_BASE	0xe0
+#define CLK_RESET_PLLX_MISC	0xe4
+
+#define CLK_RESET_SOURCE_CSITE	0x1d4
+
+#define CLK_RESET_CCLK_BURST_POLICY_SHIFT	28
+#define CLK_RESET_CCLK_RUN_POLICY_SHIFT		4
+#define CLK_RESET_CCLK_IDLE_POLICY_SHIFT	0
+#define CLK_RESET_CCLK_IDLE_POLICY		1
+#define CLK_RESET_CCLK_RUN_POLICY		2
+#define CLK_RESET_CCLK_BURST_POLICY_PLLX	8
+
+#ifdef CONFIG_PM_SLEEP
+static struct cpu_clk_suspend_context {
+	u32 pllx_misc;
+	u32 pllx_base;
+
+	u32 cpu_burst;
+	u32 clk_csite_src;
+	u32 cclk_divider;
+} tegra30_cpu_clk_sctx;
+#endif
+
 /**
 * Structure defining the fields for USB UTMI clocks Parameters.
 */
@@ -791,6 +818,112 @@ struct clk_ops tegra30_twd_ops = {
 	.recalc_rate = tegra30_twd_clk_recalc_rate,
 };
 
+/* bus clock functions */
+static int tegra30_bus_clk_is_enabled(struct clk_hw *hw)
+{
+	struct clk_tegra *c = to_clk_tegra(hw);
+	u32 val = clk_readl(c->reg);
+
+	c->state = ((val >> c->reg_shift) & BUS_CLK_DISABLE) ? OFF : ON;
+	return c->state;
+}
+
+static int tegra30_bus_clk_enable(struct clk_hw *hw)
+{
+	struct clk_tegra *c = to_clk_tegra(hw);
+	u32 val;
+
+	val = clk_readl(c->reg);
+	val &= ~(BUS_CLK_DISABLE << c->reg_shift);
+	clk_writel(val, c->reg);
+
+	return 0;
+}
+
+static void tegra30_bus_clk_disable(struct clk_hw *hw)
+{
+	struct clk_tegra *c = to_clk_tegra(hw);
+	u32 val;
+
+	val = clk_readl(c->reg);
+	val |= BUS_CLK_DISABLE << c->reg_shift;
+	clk_writel(val, c->reg);
+}
+
+static unsigned long tegra30_bus_clk_recalc_rate(struct clk_hw *hw,
+			unsigned long prate)
+{
+	struct clk_tegra *c = to_clk_tegra(hw);
+	u32 val = clk_readl(c->reg);
+	u64 rate = prate;
+
+	c->div = ((val >> c->reg_shift) & BUS_CLK_DIV_MASK) + 1;
+	c->mul = 1;
+
+	if (c->mul != 0 && c->div != 0) {
+		rate *= c->mul;
+		rate += c->div - 1; /* round up */
+		do_div(rate, c->div);
+	}
+	return rate;
+}
+
+static int tegra30_bus_clk_set_rate(struct clk_hw *hw, unsigned long rate,
+		unsigned long parent_rate)
+{
+	struct clk_tegra *c = to_clk_tegra(hw);
+	int ret = -EINVAL;
+	u32 val;
+	int i;
+
+	val = clk_readl(c->reg);
+	for (i = 1; i <= 4; i++) {
+		if (rate == parent_rate / i) {
+			val &= ~(BUS_CLK_DIV_MASK << c->reg_shift);
+			val |= (i - 1) << c->reg_shift;
+			clk_writel(val, c->reg);
+			c->div = i;
+			c->mul = 1;
+			ret = 0;
+			break;
+		}
+	}
+
+	return ret;
+}
+
+static long tegra30_bus_clk_round_rate(struct clk_hw *hw, unsigned long rate,
+				unsigned long *prate)
+{
+	unsigned long parent_rate = *prate;
+	s64 divider;
+
+	if (rate >= parent_rate)
+		return parent_rate;
+
+	divider = parent_rate;
+	divider += rate - 1;
+	do_div(divider, rate);
+
+	if (divider < 0)
+		return divider;
+
+	if (divider > 4)
+		divider = 4;
+	do_div(parent_rate, divider);
+
+	return parent_rate;
+}
+
+struct clk_ops tegra30_bus_ops = {
+	.is_enabled = tegra30_bus_clk_is_enabled,
+	.enable = tegra30_bus_clk_enable,
+	.disable = tegra30_bus_clk_disable,
+	.set_rate = tegra30_bus_clk_set_rate,
+	.round_rate = tegra30_bus_clk_round_rate,
+	.recalc_rate = tegra30_bus_clk_recalc_rate,
+};
+
 /* Blink output functions */
 static int tegra30_blink_clk_is_enabled(struct clk_hw *hw)
 {
@@ -2280,12 +2413,93 @@ static void tegra30_disable_cpu_clock(u32 cpu)
 	       reg_clk_base + TEGRA_CLK_RST_CONTROLLER_CLK_CPU_CMPLX);
 }
 
+#ifdef CONFIG_PM_SLEEP
+static bool tegra30_cpu_rail_off_ready(void)
+{
+	unsigned int cpu_rst_status;
+	int cpu_pwr_status;
+
+	cpu_rst_status = readl(reg_clk_base +
+			       TEGRA30_CLK_RST_CONTROLLER_CPU_CMPLX_STATUS);
+	cpu_pwr_status = tegra_powergate_is_powered(TEGRA_POWERGATE_CPU1) ||
+			 tegra_powergate_is_powered(TEGRA_POWERGATE_CPU2) ||
+			 tegra_powergate_is_powered(TEGRA_POWERGATE_CPU3);
+
+	if (((cpu_rst_status & 0xE) != 0xE) || cpu_pwr_status)
+		return false;
+
+	return true;
+}
+
+static void tegra30_cpu_clock_suspend(void)
+{
+	/* switch coresite to clk_m, save off original source */
+	tegra30_cpu_clk_sctx.clk_csite_src =
+				readl(reg_clk_base + CLK_RESET_SOURCE_CSITE);
+	writel(3<<30, reg_clk_base + CLK_RESET_SOURCE_CSITE);
+
+	tegra30_cpu_clk_sctx.cpu_burst =
+				readl(reg_clk_base + CLK_RESET_CCLK_BURST);
+	tegra30_cpu_clk_sctx.pllx_base =
+				readl(reg_clk_base + CLK_RESET_PLLX_BASE);
+	tegra30_cpu_clk_sctx.pllx_misc =
+				readl(reg_clk_base + CLK_RESET_PLLX_MISC);
+	tegra30_cpu_clk_sctx.cclk_divider =
+				readl(reg_clk_base + CLK_RESET_CCLK_DIVIDER);
+}
+
+static void tegra30_cpu_clock_resume(void)
+{
+	unsigned int reg, policy;
+
+	/* Is CPU complex already running on PLLX? */
+	reg = readl(reg_clk_base + CLK_RESET_CCLK_BURST);
+	policy = (reg >> CLK_RESET_CCLK_BURST_POLICY_SHIFT) & 0xF;
+
+	if (policy == CLK_RESET_CCLK_IDLE_POLICY)
+		reg = (reg >> CLK_RESET_CCLK_IDLE_POLICY_SHIFT) & 0xF;
+	else if (policy == CLK_RESET_CCLK_RUN_POLICY)
+		reg = (reg >> CLK_RESET_CCLK_RUN_POLICY_SHIFT) & 0xF;
+	else
+		BUG();
+
+	if (reg != CLK_RESET_CCLK_BURST_POLICY_PLLX) {
+		/* restore PLLX settings if CPU is on different PLL */
+		writel(tegra30_cpu_clk_sctx.pllx_misc,
+					reg_clk_base + CLK_RESET_PLLX_MISC);
+		writel(tegra30_cpu_clk_sctx.pllx_base,
+					reg_clk_base + CLK_RESET_PLLX_BASE);
+
+		/* wait for PLL stabilization if PLLX was enabled */
+		if (tegra30_cpu_clk_sctx.pllx_base & (1 << 30))
+			udelay(300);
+	}
+
+	/*
+	 * Restore original burst policy setting for calls resulting from CPU
+	 * LP2 in idle or system suspend.
+	 */
+	writel(tegra30_cpu_clk_sctx.cclk_divider,
+					reg_clk_base + CLK_RESET_CCLK_DIVIDER);
+	writel(tegra30_cpu_clk_sctx.cpu_burst,
+					reg_clk_base + CLK_RESET_CCLK_BURST);
+
+	writel(tegra30_cpu_clk_sctx.clk_csite_src,
+					reg_clk_base + CLK_RESET_SOURCE_CSITE);
+}
+#endif
+
 static struct tegra_cpu_car_ops tegra30_cpu_car_ops = {
 	.wait_for_reset	= tegra30_wait_cpu_in_reset,
 	.put_in_reset	= tegra30_put_cpu_in_reset,
 	.out_of_reset	= tegra30_cpu_out_of_reset,
 	.enable_clock	= tegra30_enable_cpu_clock,
 	.disable_clock	= tegra30_disable_cpu_clock,
+#ifdef CONFIG_PM_SLEEP
+	.rail_off_ready	= tegra30_cpu_rail_off_ready,
+	.suspend	= tegra30_cpu_clock_suspend,
+	.resume		= tegra30_cpu_clock_resume,
+#endif
 };
 
 void __init tegra30_cpu_car_ops_init(void)