Merge branch 'for_2.6.34_4f4e65_a' of git://git.pwsan.com/linux-2.6 i…

…nto omap-for-linus

arch/arm/mach-omap1/clock.c

@@ -52,12 +52,6 @@ const struct clkops clkops_dummy = {
 	.disable	= clk_omap1_dummy_disable,
 };
 
-/* XXX can be replaced with a fixed_divisor_recalc */
-unsigned long omap1_watchdog_recalc(struct clk *clk)
-{
-	return clk->parent->rate / 14;
-}
-
 unsigned long omap1_uart_recalc(struct clk *clk)
 {
 	unsigned int val = __raw_readl(clk->enable_reg);

arch/arm/mach-omap1/clock_data.c

@@ -149,7 +149,8 @@ static struct arm_idlect1_clk armwdt_ck = {
 		.flags		= CLOCK_IDLE_CONTROL,
 		.enable_reg	= OMAP1_IO_ADDRESS(ARM_IDLECT2),
 		.enable_bit	= EN_WDTCK,
-		.recalc		= &omap1_watchdog_recalc,
+		.fixed_div	= 14,
+		.recalc		= &omap_fixed_divisor_recalc,
 	},
 	.idlect_shift	= 0,
 };

arch/arm/mach-omap2/Makefile

@@ -6,14 +6,22 @@
 obj-y := id.o io.o control.o mux.o devices.o serial.o gpmc.o timer-gp.o
 
 omap-2-3-common				= irq.o sdrc.o omap_hwmod.o
-omap-3-4-common				= dpll.o
+omap-3-4-common				= dpll3xxx.o
 prcm-common				= prcm.o powerdomain.o
-clock-common				= clock.o clock_common_data.o clockdomain.o
-
-obj-$(CONFIG_ARCH_OMAP2) += $(omap-2-3-common) $(prcm-common) $(clock-common)
+clock-common				= clock.o clock_common_data.o \
+					  clockdomain.o clkt_dpll.o \
+					  clkt_clksel.o
+clock-omap2xxx				= clkt2xxx_dpllcore.o \
+					  clkt2xxx_virt_prcm_set.o \
+					  clkt2xxx_apll.o clkt2xxx_osc.o \
+					  clkt2xxx_sys.o
+clock-omap3xxx				= clkt34xx_dpll3m2.o
+
+obj-$(CONFIG_ARCH_OMAP2) += $(omap-2-3-common) $(prcm-common) $(clock-common) \
+			    $(clock-omap2xxx)
 obj-$(CONFIG_ARCH_OMAP3) += $(omap-2-3-common) $(prcm-common) $(clock-common) \
-			    $(omap-3-4-common)
-obj-$(CONFIG_ARCH_OMAP4) += $(omap-3-4-common) prcm.o clock.o
+			    $(omap-3-4-common) $(clock-omap3xxx)
+obj-$(CONFIG_ARCH_OMAP4) += $(omap-3-4-common) $(prcm-common) $(clock-common)
 
 obj-$(CONFIG_OMAP_MCBSP) += mcbsp.o
 

arch/arm/mach-omap2/clkt2xxx_apll.c

@@ -0,0 +1,120 @@
+/*
+ * OMAP2xxx APLL clock control functions
+ *
+ * Copyright (C) 2005-2008 Texas Instruments, Inc.
+ * Copyright (C) 2004-2010 Nokia Corporation
+ *
+ * Contacts:
+ * Richard Woodruff <r-woodruff2@ti.com>
+ * Paul Walmsley
+ *
+ * Based on earlier work by Tuukka Tikkanen, Tony Lindgren,
+ * Gordon McNutt and RidgeRun, Inc.
+ *
+ * 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.
+ */
+#undef DEBUG
+
+#include <linux/kernel.h>
+#include <linux/clk.h>
+#include <linux/io.h>
+
+#include <plat/clock.h>
+#include <plat/prcm.h>
+
+#include "clock.h"
+#include "clock2xxx.h"
+#include "cm.h"
+#include "cm-regbits-24xx.h"
+
+/* CM_CLKEN_PLL.EN_{54,96}M_PLL options (24XX) */
+#define EN_APLL_STOPPED			0
+#define EN_APLL_LOCKED			3
+
+/* CM_CLKSEL1_PLL.APLLS_CLKIN options (24XX) */
+#define APLLS_CLKIN_19_2MHZ		0
+#define APLLS_CLKIN_13MHZ		2
+#define APLLS_CLKIN_12MHZ		3
+
+/* Private functions */
+
+/* Enable an APLL if off */
+static int omap2_clk_apll_enable(struct clk *clk, u32 status_mask)
+{
+	u32 cval, apll_mask;
+
+	apll_mask = EN_APLL_LOCKED << clk->enable_bit;
+
+	cval = cm_read_mod_reg(PLL_MOD, CM_CLKEN);
+
+	if ((cval & apll_mask) == apll_mask)
+		return 0;   /* apll already enabled */
+
+	cval &= ~apll_mask;
+	cval |= apll_mask;
+	cm_write_mod_reg(cval, PLL_MOD, CM_CLKEN);
+
+	omap2_cm_wait_idlest(OMAP_CM_REGADDR(PLL_MOD, CM_IDLEST), status_mask,
+			     clk->name);
+
+	/*
+	 * REVISIT: Should we return an error code if omap2_wait_clock_ready()
+	 * fails?
+	 */
+	return 0;
+}
+
+static int omap2_clk_apll96_enable(struct clk *clk)
+{
+	return omap2_clk_apll_enable(clk, OMAP24XX_ST_96M_APLL);
+}
+
+static int omap2_clk_apll54_enable(struct clk *clk)
+{
+	return omap2_clk_apll_enable(clk, OMAP24XX_ST_54M_APLL);
+}
+
+/* Stop APLL */
+static void omap2_clk_apll_disable(struct clk *clk)
+{
+	u32 cval;
+
+	cval = cm_read_mod_reg(PLL_MOD, CM_CLKEN);
+	cval &= ~(EN_APLL_LOCKED << clk->enable_bit);
+	cm_write_mod_reg(cval, PLL_MOD, CM_CLKEN);
+}
+
+/* Public data */
+
+const struct clkops clkops_apll96 = {
+	.enable		= omap2_clk_apll96_enable,
+	.disable	= omap2_clk_apll_disable,
+};
+
+const struct clkops clkops_apll54 = {
+	.enable		= omap2_clk_apll54_enable,
+	.disable	= omap2_clk_apll_disable,
+};
+
+/* Public functions */
+
+u32 omap2xxx_get_apll_clkin(void)
+{
+	u32 aplls, srate = 0;
+
+	aplls = cm_read_mod_reg(PLL_MOD, CM_CLKSEL1);
+	aplls &= OMAP24XX_APLLS_CLKIN_MASK;
+	aplls >>= OMAP24XX_APLLS_CLKIN_SHIFT;
+
+	if (aplls == APLLS_CLKIN_19_2MHZ)
+		srate = 19200000;
+	else if (aplls == APLLS_CLKIN_13MHZ)
+		srate = 13000000;
+	else if (aplls == APLLS_CLKIN_12MHZ)
+		srate = 12000000;
+
+	return srate;
+}
+

arch/arm/mach-omap2/clkt2xxx_dpllcore.c

@@ -0,0 +1,173 @@
+/*
+ * DPLL + CORE_CLK composite clock functions
+ *
+ * Copyright (C) 2005-2008 Texas Instruments, Inc.
+ * Copyright (C) 2004-2010 Nokia Corporation
+ *
+ * Contacts:
+ * Richard Woodruff <r-woodruff2@ti.com>
+ * Paul Walmsley
+ *
+ * Based on earlier work by Tuukka Tikkanen, Tony Lindgren,
+ * Gordon McNutt and RidgeRun, Inc.
+ *
+ * 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.
+ *
+ * XXX The DPLL and CORE clocks should be split into two separate clock
+ * types.
+ */
+#undef DEBUG
+
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/clk.h>
+#include <linux/io.h>
+
+#include <plat/clock.h>
+#include <plat/sram.h>
+#include <plat/sdrc.h>
+
+#include "clock.h"
+#include "clock2xxx.h"
+#include "opp2xxx.h"
+#include "cm.h"
+#include "cm-regbits-24xx.h"
+
+/* #define DOWN_VARIABLE_DPLL 1 */		/* Experimental */
+
+/**
+ * omap2xxx_clk_get_core_rate - return the CORE_CLK rate
+ * @clk: pointer to the combined dpll_ck + core_ck (currently "dpll_ck")
+ *
+ * Returns the CORE_CLK rate.  CORE_CLK can have one of three rate
+ * sources on OMAP2xxx: the DPLL CLKOUT rate, DPLL CLKOUTX2, or 32KHz
+ * (the latter is unusual).  This currently should be called with
+ * struct clk *dpll_ck, which is a composite clock of dpll_ck and
+ * core_ck.
+ */
+unsigned long omap2xxx_clk_get_core_rate(struct clk *clk)
+{
+	long long core_clk;
+	u32 v;
+
+	core_clk = omap2_get_dpll_rate(clk);
+
+	v = cm_read_mod_reg(PLL_MOD, CM_CLKSEL2);
+	v &= OMAP24XX_CORE_CLK_SRC_MASK;
+
+	if (v == CORE_CLK_SRC_32K)
+		core_clk = 32768;
+	else
+		core_clk *= v;
+
+	return core_clk;
+}
+
+/*
+ * Uses the current prcm set to tell if a rate is valid.
+ * You can go slower, but not faster within a given rate set.
+ */
+static long omap2_dpllcore_round_rate(unsigned long target_rate)
+{
+	u32 high, low, core_clk_src;
+
+	core_clk_src = cm_read_mod_reg(PLL_MOD, CM_CLKSEL2);
+	core_clk_src &= OMAP24XX_CORE_CLK_SRC_MASK;
+
+	if (core_clk_src == CORE_CLK_SRC_DPLL) {	/* DPLL clockout */
+		high = curr_prcm_set->dpll_speed * 2;
+		low = curr_prcm_set->dpll_speed;
+	} else {				/* DPLL clockout x 2 */
+		high = curr_prcm_set->dpll_speed;
+		low = curr_prcm_set->dpll_speed / 2;
+	}
+
+#ifdef DOWN_VARIABLE_DPLL
+	if (target_rate > high)
+		return high;
+	else
+		return target_rate;
+#else
+	if (target_rate > low)
+		return high;
+	else
+		return low;
+#endif
+
+}
+
+unsigned long omap2_dpllcore_recalc(struct clk *clk)
+{
+	return omap2xxx_clk_get_core_rate(clk);
+}
+
+int omap2_reprogram_dpllcore(struct clk *clk, unsigned long rate)
+{
+	u32 cur_rate, low, mult, div, valid_rate, done_rate;
+	u32 bypass = 0;
+	struct prcm_config tmpset;
+	const struct dpll_data *dd;
+
+	cur_rate = omap2xxx_clk_get_core_rate(dclk);
+	mult = cm_read_mod_reg(PLL_MOD, CM_CLKSEL2);
+	mult &= OMAP24XX_CORE_CLK_SRC_MASK;
+
+	if ((rate == (cur_rate / 2)) && (mult == 2)) {
+		omap2xxx_sdrc_reprogram(CORE_CLK_SRC_DPLL, 1);
+	} else if ((rate == (cur_rate * 2)) && (mult == 1)) {
+		omap2xxx_sdrc_reprogram(CORE_CLK_SRC_DPLL_X2, 1);
+	} else if (rate != cur_rate) {
+		valid_rate = omap2_dpllcore_round_rate(rate);
+		if (valid_rate != rate)
+			return -EINVAL;
+
+		if (mult == 1)
+			low = curr_prcm_set->dpll_speed;
+		else
+			low = curr_prcm_set->dpll_speed / 2;
+
+		dd = clk->dpll_data;
+		if (!dd)
+			return -EINVAL;
+
+		tmpset.cm_clksel1_pll = __raw_readl(dd->mult_div1_reg);
+		tmpset.cm_clksel1_pll &= ~(dd->mult_mask |
+					   dd->div1_mask);
+		div = ((curr_prcm_set->xtal_speed / 1000000) - 1);
+		tmpset.cm_clksel2_pll = cm_read_mod_reg(PLL_MOD, CM_CLKSEL2);
+		tmpset.cm_clksel2_pll &= ~OMAP24XX_CORE_CLK_SRC_MASK;
+		if (rate > low) {
+			tmpset.cm_clksel2_pll |= CORE_CLK_SRC_DPLL_X2;
+			mult = ((rate / 2) / 1000000);
+			done_rate = CORE_CLK_SRC_DPLL_X2;
+		} else {
+			tmpset.cm_clksel2_pll |= CORE_CLK_SRC_DPLL;
+			mult = (rate / 1000000);
+			done_rate = CORE_CLK_SRC_DPLL;
+		}
+		tmpset.cm_clksel1_pll |= (div << __ffs(dd->mult_mask));
+		tmpset.cm_clksel1_pll |= (mult << __ffs(dd->div1_mask));
+
+		/* Worst case */
+		tmpset.base_sdrc_rfr = SDRC_RFR_CTRL_BYPASS;
+
+		if (rate == curr_prcm_set->xtal_speed)	/* If asking for 1-1 */
+			bypass = 1;
+
+		/* For omap2xxx_sdrc_init_params() */
+		omap2xxx_sdrc_reprogram(CORE_CLK_SRC_DPLL_X2, 1);
+
+		/* Force dll lock mode */
+		omap2_set_prcm(tmpset.cm_clksel1_pll, tmpset.base_sdrc_rfr,
+			       bypass);
+
+		/* Errata: ret dll entry state */
+		omap2xxx_sdrc_init_params(omap2xxx_sdrc_dll_is_unlocked());
+		omap2xxx_sdrc_reprogram(done_rate, 0);
+	}
+
+	return 0;
+}
+