Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm

* 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm: (407 commits)
  [ARM] pxafb: add support for overlay1 and overlay2 as framebuffer devices
  [ARM] pxafb: cleanup of the timing checking code
  [ARM] pxafb: cleanup of the color format manipulation code
  [ARM] pxafb: add palette format support for LCCR4_PAL_FOR_3
  [ARM] pxafb: add support for FBIOPAN_DISPLAY by dma braching
  [ARM] pxafb: allow pxafb_set_par() to start from arbitrary yoffset
  [ARM] pxafb: allow video memory size to be configurable
  [ARM] pxa: add document on the MFP design and how to use it
  [ARM] sa1100_wdt: don't assume CLOCK_TICK_RATE to be a constant
  [ARM] rtc-sa1100: don't assume CLOCK_TICK_RATE to be a constant
  [ARM] pxa/tavorevb: update board support (smartpanel LCD + keypad)
  [ARM] pxa: Update eseries defconfig
  [ARM] 5352/1: add w90p910-plat config file
  [ARM] s3c: S3C options should depend on PLAT_S3C
  [ARM] mv78xx0: implement GPIO and GPIO interrupt support
  [ARM] Kirkwood: implement GPIO and GPIO interrupt support
  [ARM] Orion: share GPIO IRQ handling code
  [ARM] Orion: share GPIO handling code
  [ARM] s3c: define __io using the typesafe version
  [ARM] S3C64XX: Ensure CPU_V6 is selected
  ...

1 files changed, 194 insertions, 0 deletions

diff --git a/arch/arm/plat-s3c24xx/clock-dclk.c b/arch/arm/plat-s3c24xx/clock-dclk.c
new file mode 100644
index 0000000..5b75a79
--- /dev/null
+++ b/arch/arm/plat-s3c24xx/clock-dclk.c
@@ -0,0 +1,194 @@
+/* linux/arch/arm/plat-s3c24xx/clock-dclk.c
+ *
+ * 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_xtal)
+		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 */
+
+struct clk s3c24xx_dclk0 = {
+	.name		= "dclk0",
+	.id		= -1,
+	.ctrlbit	= S3C2410_DCLKCON_DCLK0EN,
+	.enable	        = s3c24xx_dclk_enable,
+	.set_parent	= s3c24xx_dclk_setparent,
+	.set_rate	= s3c24xx_set_dclk_rate,
+	.round_rate	= s3c24xx_round_dclk_rate,
+};
+
+struct clk s3c24xx_dclk1 = {
+	.name		= "dclk1",
+	.id		= -1,
+	.ctrlbit	= S3C2410_DCLKCON_DCLK1EN,
+	.enable		= s3c24xx_dclk_enable,
+	.set_parent	= s3c24xx_dclk_setparent,
+	.set_rate	= s3c24xx_set_dclk_rate,
+	.round_rate	= s3c24xx_round_dclk_rate,
+};
+
+struct clk s3c24xx_clkout0 = {
+	.name		= "clkout0",
+	.id		= -1,
+	.set_parent	= s3c24xx_clkout_setparent,
+};
+
+struct clk s3c24xx_clkout1 = {
+	.name		= "clkout1",
+	.id		= -1,
+	.set_parent	= s3c24xx_clkout_setparent,
+};