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

Pull ARM SoC specific changes from Arnd Bergmann:
 "These changes are all to SoC-specific code, a total of 33 branches on
  17 platforms were pulled into this.  Like last time, Renesas sh-mobile
  is now the platform with the most changes, followed by OMAP and
  EXYNOS.

  Two new platforms, TI Keystone and Rockchips RK3xxx are added in this
  branch, both containing almost no platform specific code at all, since
  they are using generic subsystem interfaces for clocks, pinctrl,
  interrupts etc.  The device drivers are getting merged through the
  respective subsystem maintainer trees.

  One more SoC (u300) is now multiplatform capable and several others
  (shmobile, exynos, msm, integrator, kirkwood, clps711x) are moving
  towards that goal with this series but need more work.

  Also noteworthy is the work on PCI here, which is traditionally part
  of the SoC specific code.  With the changes done by Thomas Petazzoni,
  we can now more easily have PCI host controller drivers as loadable
  modules and keep them separate from the platform code in
  drivers/pci/host.  This has already led to the discovery that three
  platforms (exynos, spear and imx) are actually using an identical PCIe
  host controller and will be able to share a driver once support for
  spear and imx is added."

* tag 'soc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (480 commits)
  ARM: integrator: let pciv3 use mem/premem from device tree
  ARM: integrator: set local side PCI addresses right
  ARM: dts: Add pcie controller node for exynos5440-ssdk5440
  ARM: dts: Add pcie controller node for Samsung EXYNOS5440 SoC
  ARM: EXYNOS: Enable PCIe support for Exynos5440
  pci: Add PCIe driver for Samsung Exynos
  ARM: OMAP5: voltagedomain data: remove temporary OMAP4 voltage data
  ARM: keystone: Move CPU bringup code to dedicated asm file
  ARM: multiplatform: always pick one CPU type
  ARM: imx: select syscon for IMX6SL
  ARM: keystone: select ARM_ERRATA_798181 only for SMP
  ARM: imx: Synertronixx scb9328 needs to select SOC_IMX1
  ARM: OMAP2+: AM43x: resolve SMP related build error
  dmaengine: edma: enable build for AM33XX
  ARM: edma: Add EDMA crossbar event mux support
  ARM: edma: Add DT and runtime PM support to the private EDMA API
  dmaengine: edma: Add TI EDMA device tree binding
  arm: add basic support for Rockchip RK3066a boards
  arm: add debug uarts for rockchip rk29xx and rk3xxx series
  arm: Add basic clocks for Rockchip rk3066a SoCs
  ...

1 files changed, 70 insertions, 43 deletions

diff --git a/arch/arm/mach-u300/timer.c b/arch/arm/mach-u300/timer.c
index d9e7320..390ae5f 100644
--- a/arch/arm/mach-u300/timer.c
+++ b/arch/arm/mach-u300/timer.c
@@ -18,17 +18,15 @@
 #include <linux/clk.h>
 #include <linux/err.h>
 #include <linux/irq.h>
-
-#include <mach/hardware.h>
-#include <mach/irqs.h>
+#include <linux/delay.h>
+#include <linux/of_address.h>
+#include <linux/of_irq.h>
 
 /* Generic stuff */
 #include <asm/sched_clock.h>
 #include <asm/mach/map.h>
 #include <asm/mach/time.h>
 
-#include "timer.h"
-
 /*
  * APP side special timer registers
  * This timer contains four timers which can fire an interrupt each.
@@ -189,6 +187,8 @@
 #define TICKS_PER_JIFFY ((CLOCK_TICK_RATE + (HZ/2)) / HZ)
 #define US_PER_TICK ((1000000 + (HZ/2)) / HZ)
 
+static void __iomem *u300_timer_base;
+
 /*
  * The u300_set_mode() function is always called first, if we
  * have oneshot timer active, the oneshot scheduling function
@@ -201,28 +201,28 @@ static void u300_set_mode(enum clock_event_mode mode,
 	case CLOCK_EVT_MODE_PERIODIC:
 		/* Disable interrupts on GPT1 */
 		writel(U300_TIMER_APP_GPT1IE_IRQ_DISABLE,
-		       U300_TIMER_APP_VBASE + U300_TIMER_APP_GPT1IE);
+		       u300_timer_base + U300_TIMER_APP_GPT1IE);
 		/* Disable GP1 while we're reprogramming it. */
 		writel(U300_TIMER_APP_DGPT1_TIMER_DISABLE,
-		       U300_TIMER_APP_VBASE + U300_TIMER_APP_DGPT1);
+		       u300_timer_base + U300_TIMER_APP_DGPT1);
 		/*
 		 * Set the periodic mode to a certain number of ticks per
 		 * jiffy.
 		 */
 		writel(TICKS_PER_JIFFY,
-		       U300_TIMER_APP_VBASE + U300_TIMER_APP_GPT1TC);
+		       u300_timer_base + U300_TIMER_APP_GPT1TC);
 		/*
 		 * Set continuous mode, so the timer keeps triggering
 		 * interrupts.
 		 */
 		writel(U300_TIMER_APP_SGPT1M_MODE_CONTINUOUS,
-		       U300_TIMER_APP_VBASE + U300_TIMER_APP_SGPT1M);
+		       u300_timer_base + U300_TIMER_APP_SGPT1M);
 		/* Enable timer interrupts */
 		writel(U300_TIMER_APP_GPT1IE_IRQ_ENABLE,
-		       U300_TIMER_APP_VBASE + U300_TIMER_APP_GPT1IE);
+		       u300_timer_base + U300_TIMER_APP_GPT1IE);
 		/* Then enable the OS timer again */
 		writel(U300_TIMER_APP_EGPT1_TIMER_ENABLE,
-		       U300_TIMER_APP_VBASE + U300_TIMER_APP_EGPT1);
+		       u300_timer_base + U300_TIMER_APP_EGPT1);
 		break;
 	case CLOCK_EVT_MODE_ONESHOT:
 		/* Just break; here? */
@@ -233,33 +233,33 @@ static void u300_set_mode(enum clock_event_mode mode,
 		 */
 		/* Disable interrupts on GPT1 */
 		writel(U300_TIMER_APP_GPT1IE_IRQ_DISABLE,
-		       U300_TIMER_APP_VBASE + U300_TIMER_APP_GPT1IE);
+		       u300_timer_base + U300_TIMER_APP_GPT1IE);
 		/* Disable GP1 while we're reprogramming it. */
 		writel(U300_TIMER_APP_DGPT1_TIMER_DISABLE,
-		       U300_TIMER_APP_VBASE + U300_TIMER_APP_DGPT1);
+		       u300_timer_base + U300_TIMER_APP_DGPT1);
 		/*
 		 * Expire far in the future, u300_set_next_event() will be
 		 * called soon...
 		 */
-		writel(0xFFFFFFFF, U300_TIMER_APP_VBASE + U300_TIMER_APP_GPT1TC);
+		writel(0xFFFFFFFF, u300_timer_base + U300_TIMER_APP_GPT1TC);
 		/* We run one shot per tick here! */
 		writel(U300_TIMER_APP_SGPT1M_MODE_ONE_SHOT,
-		       U300_TIMER_APP_VBASE + U300_TIMER_APP_SGPT1M);
+		       u300_timer_base + U300_TIMER_APP_SGPT1M);
 		/* Enable interrupts for this timer */
 		writel(U300_TIMER_APP_GPT1IE_IRQ_ENABLE,
-		       U300_TIMER_APP_VBASE + U300_TIMER_APP_GPT1IE);
+		       u300_timer_base + U300_TIMER_APP_GPT1IE);
 		/* Enable timer */
 		writel(U300_TIMER_APP_EGPT1_TIMER_ENABLE,
-		       U300_TIMER_APP_VBASE + U300_TIMER_APP_EGPT1);
+		       u300_timer_base + U300_TIMER_APP_EGPT1);
 		break;
 	case CLOCK_EVT_MODE_UNUSED:
 	case CLOCK_EVT_MODE_SHUTDOWN:
 		/* Disable interrupts on GP1 */
 		writel(U300_TIMER_APP_GPT1IE_IRQ_DISABLE,
-		       U300_TIMER_APP_VBASE + U300_TIMER_APP_GPT1IE);
+		       u300_timer_base + U300_TIMER_APP_GPT1IE);
 		/* Disable GP1 */
 		writel(U300_TIMER_APP_DGPT1_TIMER_DISABLE,
-		       U300_TIMER_APP_VBASE + U300_TIMER_APP_DGPT1);
+		       u300_timer_base + U300_TIMER_APP_DGPT1);
 		break;
 	case CLOCK_EVT_MODE_RESUME:
 		/* Ignore this call */
@@ -281,27 +281,27 @@ static int u300_set_next_event(unsigned long cycles,
 {
 	/* Disable interrupts on GPT1 */
 	writel(U300_TIMER_APP_GPT1IE_IRQ_DISABLE,
-	       U300_TIMER_APP_VBASE + U300_TIMER_APP_GPT1IE);
+	       u300_timer_base + U300_TIMER_APP_GPT1IE);
 	/* Disable GP1 while we're reprogramming it. */
 	writel(U300_TIMER_APP_DGPT1_TIMER_DISABLE,
-	       U300_TIMER_APP_VBASE + U300_TIMER_APP_DGPT1);
+	       u300_timer_base + U300_TIMER_APP_DGPT1);
 	/* Reset the General Purpose timer 1. */
 	writel(U300_TIMER_APP_RGPT1_TIMER_RESET,
-	       U300_TIMER_APP_VBASE + U300_TIMER_APP_RGPT1);
+	       u300_timer_base + U300_TIMER_APP_RGPT1);
 	/* IRQ in n * cycles */
-	writel(cycles, U300_TIMER_APP_VBASE + U300_TIMER_APP_GPT1TC);
+	writel(cycles, u300_timer_base + U300_TIMER_APP_GPT1TC);
 	/*
 	 * We run one shot per tick here! (This is necessary to reconfigure,
 	 * the timer will tilt if you don't!)
 	 */
 	writel(U300_TIMER_APP_SGPT1M_MODE_ONE_SHOT,
-	       U300_TIMER_APP_VBASE + U300_TIMER_APP_SGPT1M);
+	       u300_timer_base + U300_TIMER_APP_SGPT1M);
 	/* Enable timer interrupts */
 	writel(U300_TIMER_APP_GPT1IE_IRQ_ENABLE,
-	       U300_TIMER_APP_VBASE + U300_TIMER_APP_GPT1IE);
+	       u300_timer_base + U300_TIMER_APP_GPT1IE);
 	/* Then enable the OS timer again */
 	writel(U300_TIMER_APP_EGPT1_TIMER_ENABLE,
-	       U300_TIMER_APP_VBASE + U300_TIMER_APP_EGPT1);
+	       u300_timer_base + U300_TIMER_APP_EGPT1);
 	return 0;
 }
 
@@ -320,8 +320,9 @@ static irqreturn_t u300_timer_interrupt(int irq, void *dev_id)
 {
 	struct clock_event_device *evt = &clockevent_u300_1mhz;
 	/* ACK/Clear timer IRQ for the APP GPT1 Timer */
+
 	writel(U300_TIMER_APP_GPT1IA_IRQ_ACK,
-		U300_TIMER_APP_VBASE + U300_TIMER_APP_GPT1IA);
+		u300_timer_base + U300_TIMER_APP_GPT1IA);
 	evt->event_handler(evt);
 	return IRQ_HANDLED;
 }
@@ -342,65 +343,88 @@ static struct irqaction u300_timer_irq = {
 
 static u32 notrace u300_read_sched_clock(void)
 {
-	return readl(U300_TIMER_APP_VBASE + U300_TIMER_APP_GPT2CC);
+	return readl(u300_timer_base + U300_TIMER_APP_GPT2CC);
+}
+
+static unsigned long u300_read_current_timer(void)
+{
+	return readl(u300_timer_base + U300_TIMER_APP_GPT2CC);
 }
 
+static struct delay_timer u300_delay_timer;
 
 /*
  * This sets up the system timers, clock source and clock event.
  */
-void __init u300_timer_init(void)
+static void __init u300_timer_init_of(struct device_node *np)
 {
+	struct resource irq_res;
+	int irq;
 	struct clk *clk;
 	unsigned long rate;
 
+	u300_timer_base = of_iomap(np, 0);
+	if (!u300_timer_base)
+		panic("could not ioremap system timer\n");
+
+	/* Get the IRQ for the GP1 timer */
+	irq = of_irq_to_resource(np, 2, &irq_res);
+	if (irq <= 0)
+		panic("no IRQ for system timer\n");
+
+	pr_info("U300 GP1 timer @ base: %p, IRQ: %d\n", u300_timer_base, irq);
+
 	/* Clock the interrupt controller */
-	clk = clk_get_sys("apptimer", NULL);
+	clk = of_clk_get(np, 0);
 	BUG_ON(IS_ERR(clk));
 	clk_prepare_enable(clk);
 	rate = clk_get_rate(clk);
 
 	setup_sched_clock(u300_read_sched_clock, 32, rate);
 
+	u300_delay_timer.read_current_timer = &u300_read_current_timer;
+	u300_delay_timer.freq = rate;
+	register_current_timer_delay(&u300_delay_timer);
+
 	/*
 	 * Disable the "OS" and "DD" timers - these are designed for Symbian!
 	 * Example usage in cnh1601578 cpu subsystem pd_timer_app.c
 	 */
 	writel(U300_TIMER_APP_CRC_CLOCK_REQUEST_ENABLE,
-		U300_TIMER_APP_VBASE + U300_TIMER_APP_CRC);
+		u300_timer_base + U300_TIMER_APP_CRC);
 	writel(U300_TIMER_APP_ROST_TIMER_RESET,
-		U300_TIMER_APP_VBASE + U300_TIMER_APP_ROST);
+		u300_timer_base + U300_TIMER_APP_ROST);
 	writel(U300_TIMER_APP_DOST_TIMER_DISABLE,
-		U300_TIMER_APP_VBASE + U300_TIMER_APP_DOST);
+		u300_timer_base + U300_TIMER_APP_DOST);
 	writel(U300_TIMER_APP_RDDT_TIMER_RESET,
-		U300_TIMER_APP_VBASE + U300_TIMER_APP_RDDT);
+		u300_timer_base + U300_TIMER_APP_RDDT);
 	writel(U300_TIMER_APP_DDDT_TIMER_DISABLE,
-		U300_TIMER_APP_VBASE + U300_TIMER_APP_DDDT);
+		u300_timer_base + U300_TIMER_APP_DDDT);
 
 	/* Reset the General Purpose timer 1. */
 	writel(U300_TIMER_APP_RGPT1_TIMER_RESET,
-		U300_TIMER_APP_VBASE + U300_TIMER_APP_RGPT1);
+		u300_timer_base + U300_TIMER_APP_RGPT1);
 
 	/* Set up the IRQ handler */
-	setup_irq(IRQ_U300_TIMER_APP_GP1, &u300_timer_irq);
+	setup_irq(irq, &u300_timer_irq);
 
 	/* Reset the General Purpose timer 2 */
 	writel(U300_TIMER_APP_RGPT2_TIMER_RESET,
-		U300_TIMER_APP_VBASE + U300_TIMER_APP_RGPT2);
+		u300_timer_base + U300_TIMER_APP_RGPT2);
 	/* Set this timer to run around forever */
-	writel(0xFFFFFFFFU, U300_TIMER_APP_VBASE + U300_TIMER_APP_GPT2TC);
+	writel(0xFFFFFFFFU, u300_timer_base + U300_TIMER_APP_GPT2TC);
 	/* Set continuous mode so it wraps around */
 	writel(U300_TIMER_APP_SGPT2M_MODE_CONTINUOUS,
-	       U300_TIMER_APP_VBASE + U300_TIMER_APP_SGPT2M);
+	       u300_timer_base + U300_TIMER_APP_SGPT2M);
 	/* Disable timer interrupts */
 	writel(U300_TIMER_APP_GPT2IE_IRQ_DISABLE,
-		U300_TIMER_APP_VBASE + U300_TIMER_APP_GPT2IE);
+		u300_timer_base + U300_TIMER_APP_GPT2IE);
 	/* Then enable the GP2 timer to use as a free running us counter */
 	writel(U300_TIMER_APP_EGPT2_TIMER_ENABLE,
-		U300_TIMER_APP_VBASE + U300_TIMER_APP_EGPT2);
+		u300_timer_base + U300_TIMER_APP_EGPT2);
 
 	/* Use general purpose timer 2 as clock source */
-	if (clocksource_mmio_init(U300_TIMER_APP_VBASE + U300_TIMER_APP_GPT2CC,
+	if (clocksource_mmio_init(u300_timer_base + U300_TIMER_APP_GPT2CC,
 			"GPT2", rate, 300, 32, clocksource_mmio_readl_up))
 		pr_err("timer: failed to initialize U300 clock source\n");
 
@@ -413,3 +437,6 @@ void __init u300_timer_init(void)
 	 * used by hrtimers!
 	 */
 }
+
+CLOCKSOURCE_OF_DECLARE(u300_timer, "stericsson,u300-apptimer",
+		       u300_timer_init_of);