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

Pull ARM SoC cleanups from Arnd Bergmann:
 "A large number of cleanups, all over the platforms.  This is dominated
  largely by the Samsung platforms (s3c, s5p, exynos) and a few of the
  others moving code out of arch/arm into more appropriate subsystems.

  The clocksource and irqchip drivers are now abstracted to the point
  where platforms that are already cleaned up do not need to even
  specify the driver they use, it can all get configured from the device
  tree as we do for normal device drivers.  The clocksource changes
  basically touch every single platform in the process.

  We further clean up the use of platform specific header files here,
  with the goal of turning more of the platforms over to being
  "multiplatform" enabled, which implies that they cannot expose their
  headers to architecture independent code any more.

  It is expected that no functional changes are part of the cleanup.
  The overall reduction in total code lines is mostly the result of
  removing broken and obsolete code."

* tag 'cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (133 commits)
  ARM: mvebu: correct gated clock documentation
  ARM: kirkwood: add missing include for nsa310
  ARM: exynos: move exynos4210-combiner to drivers/irqchip
  mfd: db8500-prcmu: update resource passing
  drivers/db8500-cpufreq: delete dangling include
  ARM: at91: remove NEOCORE 926 board
  sunxi: Cleanup the reset code and add meaningful registers defines
  ARM: S3C24XX: header mach/regs-mem.h local
  ARM: S3C24XX: header mach/regs-power.h local
  ARM: S3C24XX: header mach/regs-s3c2412-mem.h local
  ARM: S3C24XX: Remove plat-s3c24xx directory in arch/arm/
  ARM: S3C24XX: transform s3c2443 subirqs into new structure
  ARM: S3C24XX: modify s3c2443 irq init to initialize all irqs
  ARM: S3C24XX: move s3c2443 irq code to irq.c
  ARM: S3C24XX: transform s3c2416 irqs into new structure
  ARM: S3C24XX: modify s3c2416 irq init to initialize all irqs
  ARM: S3C24XX: move s3c2416 irq init to common irq code
  ARM: S3C24XX: Modify s3c_irq_wake to use the hwirq property
  ARM: S3C24XX: Move irq syscore-ops to irq-pm
  clocksource: always define CLOCKSOURCE_OF_DECLARE
  ...

1 files changed, 195 insertions, 0 deletions

diff --git a/arch/arm/mach-s3c24xx/clock-dclk.c b/arch/arm/mach-s3c24xx/clock-dclk.c
new file mode 100644
index 0000000..1edd9b2
--- /dev/null
+++ b/arch/arm/mach-s3c24xx/clock-dclk.c
@@ -0,0 +1,195 @@
+/*
+ * Copyright (c) 2004-2008 Simtec Electronics
+ *	Ben Dooks <ben@simtec.co.uk>
+ *	http://armlinux.simtec.co.uk/
+ *
+ * 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.
+ *
+ * S3C24XX - definitions for DCLK and CLKOUT registers
+ */
+
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/clk.h>
+#include <linux/io.h>
+
+#include <mach/regs-clock.h>
+#include <mach/regs-gpio.h>
+
+#include <plat/clock.h>
+#include <plat/cpu.h>
+
+/* clocks that could be registered by external code */
+
+static int s3c24xx_dclk_enable(struct clk *clk, int enable)
+{
+	unsigned long dclkcon = __raw_readl(S3C24XX_DCLKCON);
+
+	if (enable)
+		dclkcon |= clk->ctrlbit;
+	else
+		dclkcon &= ~clk->ctrlbit;
+
+	__raw_writel(dclkcon, S3C24XX_DCLKCON);
+
+	return 0;
+}
+
+static int s3c24xx_dclk_setparent(struct clk *clk, struct clk *parent)
+{
+	unsigned long dclkcon;
+	unsigned int uclk;
+
+	if (parent == &clk_upll)
+		uclk = 1;
+	else if (parent == &clk_p)
+		uclk = 0;
+	else
+		return -EINVAL;
+
+	clk->parent = parent;
+
+	dclkcon = __raw_readl(S3C24XX_DCLKCON);
+
+	if (clk->ctrlbit == S3C2410_DCLKCON_DCLK0EN) {
+		if (uclk)
+			dclkcon |= S3C2410_DCLKCON_DCLK0_UCLK;
+		else
+			dclkcon &= ~S3C2410_DCLKCON_DCLK0_UCLK;
+	} else {
+		if (uclk)
+			dclkcon |= S3C2410_DCLKCON_DCLK1_UCLK;
+		else
+			dclkcon &= ~S3C2410_DCLKCON_DCLK1_UCLK;
+	}
+
+	__raw_writel(dclkcon, S3C24XX_DCLKCON);
+
+	return 0;
+}
+static unsigned long s3c24xx_calc_div(struct clk *clk, unsigned long rate)
+{
+	unsigned long div;
+
+	if ((rate == 0) || !clk->parent)
+		return 0;
+
+	div = clk_get_rate(clk->parent) / rate;
+	if (div < 2)
+		div = 2;
+	else if (div > 16)
+		div = 16;
+
+	return div;
+}
+
+static unsigned long s3c24xx_round_dclk_rate(struct clk *clk,
+	unsigned long rate)
+{
+	unsigned long div = s3c24xx_calc_div(clk, rate);
+
+	if (div == 0)
+		return 0;
+
+	return clk_get_rate(clk->parent) / div;
+}
+
+static int s3c24xx_set_dclk_rate(struct clk *clk, unsigned long rate)
+{
+	unsigned long mask, data, div = s3c24xx_calc_div(clk, rate);
+
+	if (div == 0)
+		return -EINVAL;
+
+	if (clk == &s3c24xx_dclk0) {
+		mask = S3C2410_DCLKCON_DCLK0_DIV_MASK |
+			S3C2410_DCLKCON_DCLK0_CMP_MASK;
+		data = S3C2410_DCLKCON_DCLK0_DIV(div) |
+			S3C2410_DCLKCON_DCLK0_CMP((div + 1) / 2);
+	} else if (clk == &s3c24xx_dclk1) {
+		mask = S3C2410_DCLKCON_DCLK1_DIV_MASK |
+			S3C2410_DCLKCON_DCLK1_CMP_MASK;
+		data = S3C2410_DCLKCON_DCLK1_DIV(div) |
+			S3C2410_DCLKCON_DCLK1_CMP((div + 1) / 2);
+	} else
+		return -EINVAL;
+
+	clk->rate = clk_get_rate(clk->parent) / div;
+	__raw_writel(((__raw_readl(S3C24XX_DCLKCON) & ~mask) | data),
+		S3C24XX_DCLKCON);
+	return clk->rate;
+}
+static int s3c24xx_clkout_setparent(struct clk *clk, struct clk *parent)
+{
+	unsigned long mask;
+	unsigned long source;
+
+	/* calculate the MISCCR setting for the clock */
+
+	if (parent == &clk_mpll)
+		source = S3C2410_MISCCR_CLK0_MPLL;
+	else if (parent == &clk_upll)
+		source = S3C2410_MISCCR_CLK0_UPLL;
+	else if (parent == &clk_f)
+		source = S3C2410_MISCCR_CLK0_FCLK;
+	else if (parent == &clk_h)
+		source = S3C2410_MISCCR_CLK0_HCLK;
+	else if (parent == &clk_p)
+		source = S3C2410_MISCCR_CLK0_PCLK;
+	else if (clk == &s3c24xx_clkout0 && parent == &s3c24xx_dclk0)
+		source = S3C2410_MISCCR_CLK0_DCLK0;
+	else if (clk == &s3c24xx_clkout1 && parent == &s3c24xx_dclk1)
+		source = S3C2410_MISCCR_CLK0_DCLK0;
+	else
+		return -EINVAL;
+
+	clk->parent = parent;
+
+	if (clk == &s3c24xx_clkout0)
+		mask = S3C2410_MISCCR_CLK0_MASK;
+	else {
+		source <<= 4;
+		mask = S3C2410_MISCCR_CLK1_MASK;
+	}
+
+	s3c2410_modify_misccr(mask, source);
+	return 0;
+}
+
+/* external clock definitions */
+
+static struct clk_ops dclk_ops = {
+	.set_parent	= s3c24xx_dclk_setparent,
+	.set_rate	= s3c24xx_set_dclk_rate,
+	.round_rate	= s3c24xx_round_dclk_rate,
+};
+
+struct clk s3c24xx_dclk0 = {
+	.name		= "dclk0",
+	.ctrlbit	= S3C2410_DCLKCON_DCLK0EN,
+	.enable	        = s3c24xx_dclk_enable,
+	.ops		= &dclk_ops,
+};
+
+struct clk s3c24xx_dclk1 = {
+	.name		= "dclk1",
+	.ctrlbit	= S3C2410_DCLKCON_DCLK1EN,
+	.enable		= s3c24xx_dclk_enable,
+	.ops		= &dclk_ops,
+};
+
+static struct clk_ops clkout_ops = {
+	.set_parent	= s3c24xx_clkout_setparent,
+};
+
+struct clk s3c24xx_clkout0 = {
+	.name		= "clkout0",
+	.ops		= &clkout_ops,
+};
+
+struct clk s3c24xx_clkout1 = {
+	.name		= "clkout1",
+	.ops		= &clkout_ops,
+};