Merge branch 'omap/cleanup' into next/soc

This is a dependency for the omap/soc branch
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

arch/arm/mach-omap2/clkt_dpll.c

@@ -21,10 +21,7 @@
 
 #include <asm/div64.h>
 
-#include "soc.h"
 #include "clock.h"
-#include "cm-regbits-24xx.h"
-#include "cm-regbits-34xx.h"
 
 /* DPLL rate rounding: minimum DPLL multiplier, divider values */
 #define DPLL_MIN_MULTIPLIER		2
@@ -44,20 +41,12 @@
 #define DPLL_ROUNDING_VAL		((DPLL_SCALE_BASE / 2) * \
 					 (DPLL_SCALE_FACTOR / DPLL_SCALE_BASE))
 
-/* DPLL valid Fint frequency band limits - from 34xx TRM Section 4.7.6.2 */
-#define OMAP3430_DPLL_FINT_BAND1_MIN	750000
-#define OMAP3430_DPLL_FINT_BAND1_MAX	2100000
-#define OMAP3430_DPLL_FINT_BAND2_MIN	7500000
-#define OMAP3430_DPLL_FINT_BAND2_MAX	21000000
-
 /*
  * DPLL valid Fint frequency range for OMAP36xx and OMAP4xxx.
  * From device data manual section 4.3 "DPLL and DLL Specifications".
  */
 #define OMAP3PLUS_DPLL_FINT_JTYPE_MIN	500000
 #define OMAP3PLUS_DPLL_FINT_JTYPE_MAX	2500000
-#define OMAP3PLUS_DPLL_FINT_MIN		32000
-#define OMAP3PLUS_DPLL_FINT_MAX		52000000
 
 /* _dpll_test_fint() return codes */
 #define DPLL_FINT_UNDERFLOW		-1
@@ -87,33 +76,31 @@ static int _dpll_test_fint(struct clk_hw_omap *clk, unsigned int n)
 	/* DPLL divider must result in a valid jitter correction val */
 	fint = __clk_get_rate(__clk_get_parent(clk->hw.clk)) / n;
 
-	if (cpu_is_omap24xx()) {
-		/* Should not be called for OMAP2, so warn if it is called */
-		WARN(1, "No fint limits available for OMAP2!\n");
-		return DPLL_FINT_INVALID;
-	} else if (cpu_is_omap3430()) {
-		fint_min = OMAP3430_DPLL_FINT_BAND1_MIN;
-		fint_max = OMAP3430_DPLL_FINT_BAND2_MAX;
-	} else if (dd->flags & DPLL_J_TYPE) {
+	if (dd->flags & DPLL_J_TYPE) {
 		fint_min = OMAP3PLUS_DPLL_FINT_JTYPE_MIN;
 		fint_max = OMAP3PLUS_DPLL_FINT_JTYPE_MAX;
 	} else {
-		fint_min = OMAP3PLUS_DPLL_FINT_MIN;
-		fint_max = OMAP3PLUS_DPLL_FINT_MAX;
+		fint_min = ti_clk_features.fint_min;
+		fint_max = ti_clk_features.fint_max;
 	}
 
-	if (fint < fint_min) {
+	if (!fint_min || !fint_max) {
+		WARN(1, "No fint limits available!\n");
+		return DPLL_FINT_INVALID;
+	}
+
+	if (fint < ti_clk_features.fint_min) {
 		pr_debug("rejecting n=%d due to Fint failure, lowering max_divider\n",
 			 n);
 		dd->max_divider = n;
 		ret = DPLL_FINT_UNDERFLOW;
-	} else if (fint > fint_max) {
+	} else if (fint > ti_clk_features.fint_max) {
 		pr_debug("rejecting n=%d due to Fint failure, boosting min_divider\n",
 			 n);
 		dd->min_divider = n;
 		ret = DPLL_FINT_INVALID;
-	} else if (cpu_is_omap3430() && fint > OMAP3430_DPLL_FINT_BAND1_MAX &&
-		   fint < OMAP3430_DPLL_FINT_BAND2_MIN) {
+	} else if (fint > ti_clk_features.fint_band1_max &&
+		   fint < ti_clk_features.fint_band2_min) {
 		pr_debug("rejecting n=%d due to Fint failure\n", n);
 		ret = DPLL_FINT_INVALID;
 	}
@@ -185,6 +172,34 @@ static int _dpll_test_mult(int *m, int n, unsigned long *new_rate,
 	return r;
 }
 
+/**
+ * _omap2_dpll_is_in_bypass - check if DPLL is in bypass mode or not
+ * @v: bitfield value of the DPLL enable
+ *
+ * Checks given DPLL enable bitfield to see whether the DPLL is in bypass
+ * mode or not. Returns 1 if the DPLL is in bypass, 0 otherwise.
+ */
+static int _omap2_dpll_is_in_bypass(u32 v)
+{
+	u8 mask, val;
+
+	mask = ti_clk_features.dpll_bypass_vals;
+
+	/*
+	 * Each set bit in the mask corresponds to a bypass value equal
+	 * to the bitshift. Go through each set-bit in the mask and
+	 * compare against the given register value.
+	 */
+	while (mask) {
+		val = __ffs(mask);
+		mask ^= (1 << val);
+		if (v == val)
+			return 1;
+	}
+
+	return 0;
+}
+
 /* Public functions */
 u8 omap2_init_dpll_parent(struct clk_hw *hw)
 {
@@ -201,20 +216,9 @@ u8 omap2_init_dpll_parent(struct clk_hw *hw)
 	v >>= __ffs(dd->enable_mask);
 
 	/* Reparent the struct clk in case the dpll is in bypass */
-	if (cpu_is_omap24xx()) {
-		if (v == OMAP2XXX_EN_DPLL_LPBYPASS ||
-		    v == OMAP2XXX_EN_DPLL_FRBYPASS)
-			return 1;
-	} else if (cpu_is_omap34xx()) {
-		if (v == OMAP3XXX_EN_DPLL_LPBYPASS ||
-		    v == OMAP3XXX_EN_DPLL_FRBYPASS)
-			return 1;
-	} else if (soc_is_am33xx() || cpu_is_omap44xx() || soc_is_am43xx()) {
-		if (v == OMAP4XXX_EN_DPLL_LPBYPASS ||
-		    v == OMAP4XXX_EN_DPLL_FRBYPASS ||
-		    v == OMAP4XXX_EN_DPLL_MNBYPASS)
-			return 1;
-	}
+	if (_omap2_dpll_is_in_bypass(v))
+		return 1;
+
 	return 0;
 }
 
@@ -247,20 +251,8 @@ unsigned long omap2_get_dpll_rate(struct clk_hw_omap *clk)
 	v &= dd->enable_mask;
 	v >>= __ffs(dd->enable_mask);
 
-	if (cpu_is_omap24xx()) {
-		if (v == OMAP2XXX_EN_DPLL_LPBYPASS ||
-		    v == OMAP2XXX_EN_DPLL_FRBYPASS)
-			return __clk_get_rate(dd->clk_bypass);
-	} else if (cpu_is_omap34xx()) {
-		if (v == OMAP3XXX_EN_DPLL_LPBYPASS ||
-		    v == OMAP3XXX_EN_DPLL_FRBYPASS)
-			return __clk_get_rate(dd->clk_bypass);
-	} else if (soc_is_am33xx() || cpu_is_omap44xx() || soc_is_am43xx()) {
-		if (v == OMAP4XXX_EN_DPLL_LPBYPASS ||
-		    v == OMAP4XXX_EN_DPLL_FRBYPASS ||
-		    v == OMAP4XXX_EN_DPLL_MNBYPASS)
-			return __clk_get_rate(dd->clk_bypass);
-	}
+	if (_omap2_dpll_is_in_bypass(v))
+		return __clk_get_rate(dd->clk_bypass);
 
 	v = omap2_clk_readl(clk, dd->mult_div1_reg);
 	dpll_mult = v & dd->mult_mask;

arch/arm/mach-omap2/clkt_iclk.c

@@ -14,11 +14,11 @@
 #include <linux/clk-provider.h>
 #include <linux/io.h>
 
-
 #include "clock.h"
-#include "clock2xxx.h"
-#include "cm2xxx_3xxx.h"
-#include "cm-regbits-24xx.h"
+
+/* Register offsets */
+#define CM_AUTOIDLE			0x30
+#define CM_ICLKEN			0x10
 
 /* Private functions */
 

arch/arm/mach-omap2/clock.c

@@ -46,6 +46,24 @@
 
 u16 cpu_mask;
 
+/*
+ * Clock features setup. Used instead of CPU type checks.
+ */
+struct ti_clk_features ti_clk_features;
+
+/* DPLL valid Fint frequency band limits - from 34xx TRM Section 4.7.6.2 */
+#define OMAP3430_DPLL_FINT_BAND1_MIN	750000
+#define OMAP3430_DPLL_FINT_BAND1_MAX	2100000
+#define OMAP3430_DPLL_FINT_BAND2_MIN	7500000
+#define OMAP3430_DPLL_FINT_BAND2_MAX	21000000
+
+/*
+ * DPLL valid Fint frequency range for OMAP36xx and OMAP4xxx.
+ * From device data manual section 4.3 "DPLL and DLL Specifications".
+ */
+#define OMAP3PLUS_DPLL_FINT_MIN		32000
+#define OMAP3PLUS_DPLL_FINT_MAX		52000000
+
 /*
  * clkdm_control: if true, then when a clock is enabled in the
  * hardware, its clockdomain will first be enabled; and when a clock
@@ -287,13 +305,7 @@ void omap2_clk_dflt_find_idlest(struct clk_hw_omap *clk,
 	 * 34xx reverses this, just to keep us on our toes
 	 * AM35xx uses both, depending on the module.
 	 */
-	if (cpu_is_omap24xx())
-		*idlest_val = OMAP24XX_CM_IDLEST_VAL;
-	else if (cpu_is_omap34xx())
-		*idlest_val = OMAP34XX_CM_IDLEST_VAL;
-	else
-		BUG();
-
+	*idlest_val = ti_clk_features.cm_idlest_val;
 }
 
 /**
@@ -731,3 +743,53 @@ void __init omap2_clk_print_new_rates(const char *hfclkin_ck_name,
 		(clk_get_rate(core_ck) / 1000000),
 		(clk_get_rate(mpu_ck) / 1000000));
 }
+
+/**
+ * ti_clk_init_features - init clock features struct for the SoC
+ *
+ * Initializes the clock features struct based on the SoC type.
+ */
+void __init ti_clk_init_features(void)
+{
+	/* Fint setup for DPLLs */
+	if (cpu_is_omap3430()) {
+		ti_clk_features.fint_min = OMAP3430_DPLL_FINT_BAND1_MIN;
+		ti_clk_features.fint_max = OMAP3430_DPLL_FINT_BAND2_MAX;
+		ti_clk_features.fint_band1_max = OMAP3430_DPLL_FINT_BAND1_MAX;
+		ti_clk_features.fint_band2_min = OMAP3430_DPLL_FINT_BAND2_MIN;
+	} else {
+		ti_clk_features.fint_min = OMAP3PLUS_DPLL_FINT_MIN;
+		ti_clk_features.fint_max = OMAP3PLUS_DPLL_FINT_MAX;
+	}
+
+	/* Bypass value setup for DPLLs */
+	if (cpu_is_omap24xx()) {
+		ti_clk_features.dpll_bypass_vals |=
+			(1 << OMAP2XXX_EN_DPLL_LPBYPASS) |
+			(1 << OMAP2XXX_EN_DPLL_FRBYPASS);
+	} else if (cpu_is_omap34xx()) {
+		ti_clk_features.dpll_bypass_vals |=
+			(1 << OMAP3XXX_EN_DPLL_LPBYPASS) |
+			(1 << OMAP3XXX_EN_DPLL_FRBYPASS);
+	} else if (soc_is_am33xx() || cpu_is_omap44xx() || soc_is_am43xx() ||
+		   soc_is_omap54xx() || soc_is_dra7xx()) {
+		ti_clk_features.dpll_bypass_vals |=
+			(1 << OMAP4XXX_EN_DPLL_LPBYPASS) |
+			(1 << OMAP4XXX_EN_DPLL_FRBYPASS) |
+			(1 << OMAP4XXX_EN_DPLL_MNBYPASS);
+	}
+
+	/* Jitter correction only available on OMAP343X */
+	if (cpu_is_omap343x())
+		ti_clk_features.flags |= TI_CLK_DPLL_HAS_FREQSEL;
+
+	/* Idlest value for interface clocks.
+	 * 24xx uses 0 to indicate not ready, and 1 to indicate ready.
+	 * 34xx reverses this, just to keep us on our toes
+	 * AM35xx uses both, depending on the module.
+	 */
+	if (cpu_is_omap24xx())
+		ti_clk_features.cm_idlest_val = OMAP24XX_CM_IDLEST_VAL;
+	else if (cpu_is_omap34xx())
+		ti_clk_features.cm_idlest_val = OMAP34XX_CM_IDLEST_VAL;
+}

arch/arm/mach-omap2/clock.h

@@ -101,31 +101,6 @@ struct clockdomain;
 	};							\
 	DEFINE_STRUCT_CLK(_name, _parent_names, _ops);
 
-#define DEFINE_CLK_OMAP_HSDIVIDER(_name, _parent_name,		\
-				_parent_ptr, _flags,		\
-				_clksel_reg, _clksel_mask)	\
-	static const struct clksel _name##_div[] = {		\
-		{						\
-			.parent = _parent_ptr,			\
-			.rates = div31_1to31_rates		\
-		},						\
-		{ .parent = NULL },				\
-	};							\
-	static struct clk _name;				\
-	static const char *_name##_parent_names[] = {		\
-		_parent_name,					\
-	};							\
-	static struct clk_hw_omap _name##_hw = {		\
-		.hw = {						\
-			.clk = &_name,				\
-		},						\
-		.clksel		= _name##_div,			\
-		.clksel_reg	= _clksel_reg,			\
-		.clksel_mask	= _clksel_mask,			\
-		.ops		= &clkhwops_omap4_dpllmx,	\
-	};							\
-	DEFINE_STRUCT_CLK(_name, _name##_parent_names, omap_hsdivider_ops);
-
 /* struct clksel_rate.flags possibilities */
 #define RATE_IN_242X		(1 << 0)
 #define RATE_IN_243X		(1 << 1)
@@ -248,6 +223,23 @@ void omap2_clk_writel(u32 val, struct clk_hw_omap *clk, void __iomem *reg);
 
 extern u16 cpu_mask;
 
+/*
+ * Clock features setup. Used instead of CPU type checks.
+ */
+struct ti_clk_features {
+	u32 flags;
+	long fint_min;
+	long fint_max;
+	long fint_band1_max;
+	long fint_band2_min;
+	u8 dpll_bypass_vals;
+	u8 cm_idlest_val;
+};
+
+#define TI_CLK_DPLL_HAS_FREQSEL		(1 << 0)
+
+extern struct ti_clk_features ti_clk_features;
+
 extern const struct clkops clkops_omap2_dflt_wait;
 extern const struct clkops clkops_dummy;
 extern const struct clkops clkops_omap2_dflt;
@@ -286,4 +278,6 @@ extern int omap2_clkops_enable_clkdm(struct clk_hw *hw);
 extern void omap2_clkops_disable_clkdm(struct clk_hw *hw);
 
 extern void omap_clocks_register(struct omap_clk *oclks, int cnt);
+
+void __init ti_clk_init_features(void);
 #endif

arch/arm/mach-omap2/control.c

@@ -44,8 +44,7 @@ struct omap3_scratchpad {
 };
 
 struct omap3_scratchpad_prcm_block {
-	u32 prm_clksrc_ctrl;
-	u32 prm_clksel;
+	u32 prm_contents[2];
 	u32 cm_contents[11];
 	u32 prcm_block_size;
 };
@@ -282,13 +281,9 @@ void omap3_clear_scratchpad_contents(void)
 	void __iomem *v_addr;
 	u32 offset = 0;
 	v_addr = OMAP2_L4_IO_ADDRESS(OMAP343X_SCRATCHPAD_ROM);
-	if (omap2_prm_read_mod_reg(OMAP3430_GR_MOD, OMAP3_PRM_RSTST_OFFSET) &
-	    OMAP3430_GLOBAL_COLD_RST_MASK) {
+	if (omap3xxx_prm_clear_global_cold_reset()) {
 		for ( ; offset <= max_offset; offset += 0x4)
 			writel_relaxed(0x0, (v_addr + offset));
-		omap2_prm_set_mod_reg_bits(OMAP3430_GLOBAL_COLD_RST_MASK,
-					   OMAP3430_GR_MOD,
-					   OMAP3_PRM_RSTST_OFFSET);
 	}
 }
 
@@ -331,13 +326,7 @@ void omap3_save_scratchpad_contents(void)
 	scratchpad_contents.sdrc_block_offset = 0x64;
 
 	/* Populate the PRCM block contents */
-	prcm_block_contents.prm_clksrc_ctrl =
-		omap2_prm_read_mod_reg(OMAP3430_GR_MOD,
-				       OMAP3_PRM_CLKSRC_CTRL_OFFSET);
-	prcm_block_contents.prm_clksel =
-		omap2_prm_read_mod_reg(OMAP3430_CCR_MOD,
-				       OMAP3_PRM_CLKSEL_OFFSET);
-
+	omap3_prm_save_scratchpad_contents(prcm_block_contents.prm_contents);
 	omap3_cm_save_scratchpad_contents(prcm_block_contents.cm_contents);
 
 	prcm_block_contents.prcm_block_size = 0x0;
@@ -575,9 +564,50 @@ int omap3_ctrl_save_padconf(void)
  * Sets the bootmode for IVA2 to idle. This is needed by the PM code to
  * force disable IVA2 so that it does not prevent any low-power states.
  */
-void omap3_ctrl_set_iva_bootmode_idle(void)
+static void __init omap3_ctrl_set_iva_bootmode_idle(void)
 {
 	omap_ctrl_writel(OMAP3_IVA2_BOOTMOD_IDLE,
 			 OMAP343X_CONTROL_IVA2_BOOTMOD);
 }
+
+/**
+ * omap3_ctrl_setup_d2d_padconf - setup stacked modem pads for idle
+ *
+ * Sets up the pads controlling the stacked modem in such way that the
+ * device can enter idle.
+ */
+static void __init omap3_ctrl_setup_d2d_padconf(void)
+{
+	u16 mask, padconf;
+
+	/*
+	 * In a stand alone OMAP3430 where there is not a stacked
+	 * modem for the D2D Idle Ack and D2D MStandby must be pulled
+	 * high. S CONTROL_PADCONF_SAD2D_IDLEACK and
+	 * CONTROL_PADCONF_SAD2D_MSTDBY to have a pull up.
+	 */
+	mask = (1 << 4) | (1 << 3); /* pull-up, enabled */
+	padconf = omap_ctrl_readw(OMAP3_PADCONF_SAD2D_MSTANDBY);
+	padconf |= mask;
+	omap_ctrl_writew(padconf, OMAP3_PADCONF_SAD2D_MSTANDBY);
+
+	padconf = omap_ctrl_readw(OMAP3_PADCONF_SAD2D_IDLEACK);
+	padconf |= mask;
+	omap_ctrl_writew(padconf, OMAP3_PADCONF_SAD2D_IDLEACK);
+}
+
+/**
+ * omap3_ctrl_init - does static initializations for control module
+ *
+ * Initializes system control module. This sets up the sysconfig autoidle,
+ * and sets up modem and iva2 so that they can be idled properly.
+ */
+void __init omap3_ctrl_init(void)
+{
+	omap_ctrl_writel(OMAP3430_AUTOIDLE_MASK, OMAP2_CONTROL_SYSCONFIG);
+
+	omap3_ctrl_set_iva_bootmode_idle();
+
+	omap3_ctrl_setup_d2d_padconf();
+}
 #endif /* CONFIG_ARCH_OMAP3 && CONFIG_PM */

arch/arm/mach-omap2/control.h

@@ -16,11 +16,6 @@
 #ifndef __ARCH_ARM_MACH_OMAP2_CONTROL_H
 #define __ARCH_ARM_MACH_OMAP2_CONTROL_H
 
-#include "ctrl_module_core_44xx.h"
-#include "ctrl_module_wkup_44xx.h"
-#include "ctrl_module_pad_core_44xx.h"
-#include "ctrl_module_pad_wkup_44xx.h"
-
 #include "am33xx.h"
 
 #ifndef __ASSEMBLY__
@@ -254,6 +249,39 @@
 /* TI81XX CONTROL_DEVCONF register offsets */
 #define TI81XX_CONTROL_DEVICE_ID	(TI81XX_CONTROL_DEVCONF + 0x000)
 
+/* OMAP4 CONTROL MODULE */
+#define OMAP4_CTRL_MODULE_PAD_WKUP			0x4a31e000
+#define OMAP4_CTRL_MODULE_PAD_WKUP_CONTROL_I2C_2	0x0604
+#define OMAP4_CTRL_MODULE_CORE_STATUS			0x02c4
+#define OMAP4_CTRL_MODULE_CORE_STD_FUSE_PROD_ID_1	0x0218
+#define OMAP4_CTRL_MODULE_CORE_DSP_BOOTADDR		0x0304
+#define OMAP4_CTRL_MODULE_PAD_CORE_CONTROL_DSIPHY	0x0618
+#define OMAP4_CTRL_MODULE_PAD_CORE_CONTROL_CAMERA_RX	0x0608
+
+/* OMAP4 CONTROL_DSIPHY */
+#define OMAP4_DSI2_LANEENABLE_SHIFT			29
+#define OMAP4_DSI2_LANEENABLE_MASK			(0x7 << 29)
+#define OMAP4_DSI1_LANEENABLE_SHIFT			24
+#define OMAP4_DSI1_LANEENABLE_MASK			(0x1f << 24)
+#define OMAP4_DSI1_PIPD_SHIFT				19
+#define OMAP4_DSI1_PIPD_MASK				(0x1f << 19)
+#define OMAP4_DSI2_PIPD_SHIFT				14
+#define OMAP4_DSI2_PIPD_MASK				(0x1f << 14)
+
+/* OMAP4 CONTROL_CAMERA_RX */
+#define OMAP4_CAMERARX_CSI21_LANEENABLE_SHIFT		24
+#define OMAP4_CAMERARX_CSI21_LANEENABLE_MASK		(0x1f << 24)
+#define OMAP4_CAMERARX_CSI22_LANEENABLE_SHIFT		29
+#define OMAP4_CAMERARX_CSI22_LANEENABLE_MASK		(0x3 << 29)
+#define OMAP4_CAMERARX_CSI22_CTRLCLKEN_SHIFT		21
+#define OMAP4_CAMERARX_CSI22_CTRLCLKEN_MASK		(1 << 21)
+#define OMAP4_CAMERARX_CSI22_CAMMODE_SHIFT		19
+#define OMAP4_CAMERARX_CSI22_CAMMODE_MASK		(0x3 << 19)
+#define OMAP4_CAMERARX_CSI21_CTRLCLKEN_SHIFT		18
+#define OMAP4_CAMERARX_CSI21_CTRLCLKEN_MASK		(1 << 18)
+#define OMAP4_CAMERARX_CSI21_CAMMODE_SHIFT		16
+#define OMAP4_CAMERARX_CSI21_CAMMODE_MASK		(0x3 << 16)
+
 /* OMAP54XX CONTROL STATUS register */
 #define OMAP5XXX_CONTROL_STATUS                0x134
 #define OMAP5_DEVICETYPE_MASK          (0x7 << 6)
@@ -427,7 +455,7 @@ extern void omap_ctrl_write_dsp_boot_addr(u32 bootaddr);
 extern void omap_ctrl_write_dsp_boot_mode(u8 bootmode);
 extern void omap3630_ctrl_disable_rta(void);
 extern int omap3_ctrl_save_padconf(void);
-extern void omap3_ctrl_set_iva_bootmode_idle(void);
+void omap3_ctrl_init(void);
 extern void omap2_set_globals_control(void __iomem *ctrl,
 				      void __iomem *ctrl_pad);
 #else

arch/arm/mach-omap2/dpll3xxx.c

@@ -28,11 +28,8 @@
 #include <linux/bitops.h>
 #include <linux/clkdev.h>
 
-#include "soc.h"
 #include "clockdomain.h"
 #include "clock.h"
-#include "cm2xxx_3xxx.h"
-#include "cm-regbits-34xx.h"
 
 /* CM_AUTOIDLE_PLL*.AUTO_* bit values */
 #define DPLL_AUTOIDLE_DISABLE			0x0
@@ -310,7 +307,7 @@ static int omap3_noncore_dpll_program(struct clk_hw_omap *clk, u16 freqsel)
 	 * Set jitter correction. Jitter correction applicable for OMAP343X
 	 * only since freqsel field is no longer present on other devices.
 	 */
-	if (cpu_is_omap343x()) {
+	if (ti_clk_features.flags & TI_CLK_DPLL_HAS_FREQSEL) {
 		v = omap2_clk_readl(clk, dd->control_reg);
 		v &= ~dd->freqsel_mask;
 		v |= freqsel << __ffs(dd->freqsel_mask);
@@ -512,7 +509,7 @@ int omap3_noncore_dpll_set_rate(struct clk_hw *hw, unsigned long rate,
 			return -EINVAL;
 
 		/* Freqsel is available only on OMAP343X devices */
-		if (cpu_is_omap343x()) {
+		if (ti_clk_features.flags & TI_CLK_DPLL_HAS_FREQSEL) {
 			freqsel = _omap3_dpll_compute_freqsel(clk,
 						dd->last_rounded_n);
 			WARN_ON(!freqsel);

arch/arm/mach-omap2/dpll44xx.c

@@ -15,10 +15,7 @@
 #include <linux/io.h>
 #include <linux/bitops.h>
 
-#include "soc.h"
 #include "clock.h"
-#include "clock44xx.h"
-#include "cm-regbits-44xx.h"
 
 /*
  * Maximum DPLL input frequency (FINT) and output frequency (FOUT) that
@@ -29,13 +26,23 @@
 #define OMAP4_DPLL_LP_FINT_MAX	1000000
 #define OMAP4_DPLL_LP_FOUT_MAX	100000000
 
+/*
+ * Bitfield declarations
+ */
+#define OMAP4430_DPLL_CLKOUT_GATE_CTRL_MASK		(1 << 8)
+#define OMAP4430_DPLL_CLKOUTX2_GATE_CTRL_MASK		(1 << 10)
+#define OMAP4430_DPLL_REGM4XEN_MASK			(1 << 11)
+
+/* Static rate multiplier for OMAP4 REGM4XEN clocks */
+#define OMAP4430_REGM4XEN_MULT				4
+
 /* Supported only on OMAP4 */
 int omap4_dpllmx_gatectrl_read(struct clk_hw_omap *clk)
 {
 	u32 v;
 	u32 mask;
 
-	if (!clk || !clk->clksel_reg || !cpu_is_omap44xx())
+	if (!clk || !clk->clksel_reg)
 		return -EINVAL;
 
 	mask = clk->flags & CLOCK_CLKOUTX2 ?
@@ -54,7 +61,7 @@ void omap4_dpllmx_allow_gatectrl(struct clk_hw_omap *clk)
 	u32 v;
 	u32 mask;
 
-	if (!clk || !clk->clksel_reg || !cpu_is_omap44xx())
+	if (!clk || !clk->clksel_reg)
 		return;
 
 	mask = clk->flags & CLOCK_CLKOUTX2 ?
@@ -72,7 +79,7 @@ void omap4_dpllmx_deny_gatectrl(struct clk_hw_omap *clk)
 	u32 v;
 	u32 mask;
 
-	if (!clk || !clk->clksel_reg || !cpu_is_omap44xx())
+	if (!clk || !clk->clksel_reg)
 		return;
 
 	mask = clk->flags & CLOCK_CLKOUTX2 ?

arch/arm/mach-omap2/io.c

@@ -728,6 +728,8 @@ int __init omap_clk_init(void)
 	if (!omap_clk_soc_init)
 		return 0;
 
+	ti_clk_init_features();
+
 	ret = of_prcm_init();
 	if (!ret)
 		ret = omap_clk_soc_init();

arch/arm/mach-omap2/pm24xx.c

@@ -75,9 +75,9 @@ static int omap2_enter_full_retention(void)
 
 	/* Clear old wake-up events */
 	/* REVISIT: These write to reserved bits? */
-	omap2_prm_write_mod_reg(0xffffffff, CORE_MOD, PM_WKST1);
-	omap2_prm_write_mod_reg(0xffffffff, CORE_MOD, OMAP24XX_PM_WKST2);
-	omap2_prm_write_mod_reg(0xffffffff, WKUP_MOD, PM_WKST);
+	omap2xxx_prm_clear_mod_irqs(CORE_MOD, PM_WKST1, ~0);
+	omap2xxx_prm_clear_mod_irqs(CORE_MOD, OMAP24XX_PM_WKST2, ~0);
+	omap2xxx_prm_clear_mod_irqs(WKUP_MOD, PM_WKST, ~0);
 
 	pwrdm_set_next_pwrst(core_pwrdm, PWRDM_POWER_RET);
 	pwrdm_set_next_pwrst(mpu_pwrdm, PWRDM_POWER_RET);
@@ -104,23 +104,18 @@ static int omap2_enter_full_retention(void)
 	clk_enable(osc_ck);
 
 	/* clear CORE wake-up events */
-	omap2_prm_write_mod_reg(0xffffffff, CORE_MOD, PM_WKST1);
-	omap2_prm_write_mod_reg(0xffffffff, CORE_MOD, OMAP24XX_PM_WKST2);
+	omap2xxx_prm_clear_mod_irqs(CORE_MOD, PM_WKST1, ~0);
+	omap2xxx_prm_clear_mod_irqs(CORE_MOD, OMAP24XX_PM_WKST2, ~0);
 
 	/* wakeup domain events - bit 1: GPT1, bit5 GPIO */
-	omap2_prm_clear_mod_reg_bits(0x4 | 0x1, WKUP_MOD, PM_WKST);
+	omap2xxx_prm_clear_mod_irqs(WKUP_MOD, PM_WKST, 0x4 | 0x1);
 
 	/* MPU domain wake events */
-	l = omap2_prm_read_mod_reg(OCP_MOD, OMAP2_PRCM_IRQSTATUS_MPU_OFFSET);
-	if (l & 0x01)
-		omap2_prm_write_mod_reg(0x01, OCP_MOD,
-				  OMAP2_PRCM_IRQSTATUS_MPU_OFFSET);
-	if (l & 0x20)
-		omap2_prm_write_mod_reg(0x20, OCP_MOD,
-				  OMAP2_PRCM_IRQSTATUS_MPU_OFFSET);
+	omap2xxx_prm_clear_mod_irqs(OCP_MOD, OMAP2_PRCM_IRQSTATUS_MPU_OFFSET,
+				    0x1);
 
-	/* Mask future PRCM-to-MPU interrupts */
-	omap2_prm_write_mod_reg(0x0, OCP_MOD, OMAP2_PRCM_IRQSTATUS_MPU_OFFSET);
+	omap2xxx_prm_clear_mod_irqs(OCP_MOD, OMAP2_PRCM_IRQSTATUS_MPU_OFFSET,
+				    0x20);
 
 	pwrdm_set_next_pwrst(mpu_pwrdm, PWRDM_POWER_ON);
 	pwrdm_set_next_pwrst(core_pwrdm, PWRDM_POWER_ON);
@@ -148,9 +143,9 @@ static void omap2_enter_mpu_retention(void)
 	 * it is in retention mode. */
 	if (omap2_allow_mpu_retention()) {
 		/* REVISIT: These write to reserved bits? */
-		omap2_prm_write_mod_reg(0xffffffff, CORE_MOD, PM_WKST1);
-		omap2_prm_write_mod_reg(0xffffffff, CORE_MOD, OMAP24XX_PM_WKST2);
-		omap2_prm_write_mod_reg(0xffffffff, WKUP_MOD, PM_WKST);
+		omap2xxx_prm_clear_mod_irqs(CORE_MOD, PM_WKST1, ~0);
+		omap2xxx_prm_clear_mod_irqs(CORE_MOD, OMAP24XX_PM_WKST2, ~0);
+		omap2xxx_prm_clear_mod_irqs(WKUP_MOD, PM_WKST, ~0);
 
 		/* Try to enter MPU retention */
 		pwrdm_set_next_pwrst(mpu_pwrdm, PWRDM_POWER_RET);

arch/arm/mach-omap2/pm34xx.c

@@ -133,60 +133,13 @@ static void omap3_save_secure_ram_context(void)
 	}
 }
 
-/*
- * PRCM Interrupt Handler Helper Function
- *
- * The purpose of this function is to clear any wake-up events latched
- * in the PRCM PM_WKST_x registers. It is possible that a wake-up event
- * may occur whilst attempting to clear a PM_WKST_x register and thus
- * set another bit in this register. A while loop is used to ensure
- * that any peripheral wake-up events occurring while attempting to
- * clear the PM_WKST_x are detected and cleared.
- */
-static int prcm_clear_mod_irqs(s16 module, u8 regs, u32 ignore_bits)
-{
-	u32 wkst, fclk, iclk, clken;
-	u16 wkst_off = (regs == 3) ? OMAP3430ES2_PM_WKST3 : PM_WKST1;
-	u16 fclk_off = (regs == 3) ? OMAP3430ES2_CM_FCLKEN3 : CM_FCLKEN1;
-	u16 iclk_off = (regs == 3) ? CM_ICLKEN3 : CM_ICLKEN1;
-	u16 grpsel_off = (regs == 3) ?
-		OMAP3430ES2_PM_MPUGRPSEL3 : OMAP3430_PM_MPUGRPSEL;
-	int c = 0;
-
-	wkst = omap2_prm_read_mod_reg(module, wkst_off);
-	wkst &= omap2_prm_read_mod_reg(module, grpsel_off);
-	wkst &= ~ignore_bits;
-	if (wkst) {
-		iclk = omap2_cm_read_mod_reg(module, iclk_off);
-		fclk = omap2_cm_read_mod_reg(module, fclk_off);
-		while (wkst) {
-			clken = wkst;
-			omap2_cm_set_mod_reg_bits(clken, module, iclk_off);
-			/*
-			 * For USBHOST, we don't know whether HOST1 or
-			 * HOST2 woke us up, so enable both f-clocks
-			 */
-			if (module == OMAP3430ES2_USBHOST_MOD)
-				clken |= 1 << OMAP3430ES2_EN_USBHOST2_SHIFT;
-			omap2_cm_set_mod_reg_bits(clken, module, fclk_off);
-			omap2_prm_write_mod_reg(wkst, module, wkst_off);
-			wkst = omap2_prm_read_mod_reg(module, wkst_off);
-			wkst &= ~ignore_bits;
-			c++;
-		}
-		omap2_cm_write_mod_reg(iclk, module, iclk_off);
-		omap2_cm_write_mod_reg(fclk, module, fclk_off);
-	}
-
-	return c;
-}
-
 static irqreturn_t _prcm_int_handle_io(int irq, void *unused)
 {
 	int c;
 
-	c = prcm_clear_mod_irqs(WKUP_MOD, 1,
-		~(OMAP3430_ST_IO_MASK | OMAP3430_ST_IO_CHAIN_MASK));
+	c = omap3xxx_prm_clear_mod_irqs(WKUP_MOD, 1,
+					~(OMAP3430_ST_IO_MASK |
+					  OMAP3430_ST_IO_CHAIN_MASK));
 
 	return c ? IRQ_HANDLED : IRQ_NONE;
 }
@@ -200,13 +153,14 @@ static irqreturn_t _prcm_int_handle_wakeup(int irq, void *unused)
 	 * these are handled in a separate handler to avoid acking
 	 * IO events before parsing in mux code
 	 */
-	c = prcm_clear_mod_irqs(WKUP_MOD, 1,
-		OMAP3430_ST_IO_MASK | OMAP3430_ST_IO_CHAIN_MASK);
-	c += prcm_clear_mod_irqs(CORE_MOD, 1, 0);
-	c += prcm_clear_mod_irqs(OMAP3430_PER_MOD, 1, 0);
+	c = omap3xxx_prm_clear_mod_irqs(WKUP_MOD, 1,
+					OMAP3430_ST_IO_MASK |
+					OMAP3430_ST_IO_CHAIN_MASK);
+	c += omap3xxx_prm_clear_mod_irqs(CORE_MOD, 1, 0);
+	c += omap3xxx_prm_clear_mod_irqs(OMAP3430_PER_MOD, 1, 0);
 	if (omap_rev() > OMAP3430_REV_ES1_0) {
-		c += prcm_clear_mod_irqs(CORE_MOD, 3, 0);
-		c += prcm_clear_mod_irqs(OMAP3430ES2_USBHOST_MOD, 1, 0);
+		c += omap3xxx_prm_clear_mod_irqs(CORE_MOD, 3, 0);
+		c += omap3xxx_prm_clear_mod_irqs(OMAP3430ES2_USBHOST_MOD, 1, 0);
 	}
 
 	return c ? IRQ_HANDLED : IRQ_NONE;
@@ -399,159 +353,11 @@ static int omap3_pm_suspend(void)
 #define omap3_pm_suspend NULL
 #endif /* CONFIG_SUSPEND */
 
-
-/**
- * omap3_iva_idle(): ensure IVA is in idle so it can be put into
- *                   retention
- *
- * In cases where IVA2 is activated by bootcode, it may prevent
- * full-chip retention or off-mode because it is not idle.  This
- * function forces the IVA2 into idle state so it can go
- * into retention/off and thus allow full-chip retention/off.
- *
- **/
-static void __init omap3_iva_idle(void)
-{
-	/* ensure IVA2 clock is disabled */
-	omap2_cm_write_mod_reg(0, OMAP3430_IVA2_MOD, CM_FCLKEN);
-
-	/* if no clock activity, nothing else to do */
-	if (!(omap2_cm_read_mod_reg(OMAP3430_IVA2_MOD, OMAP3430_CM_CLKSTST) &
-	      OMAP3430_CLKACTIVITY_IVA2_MASK))
-		return;
-
-	/* Reset IVA2 */
-	omap2_prm_write_mod_reg(OMAP3430_RST1_IVA2_MASK |
-			  OMAP3430_RST2_IVA2_MASK |
-			  OMAP3430_RST3_IVA2_MASK,
-			  OMAP3430_IVA2_MOD, OMAP2_RM_RSTCTRL);
-
-	/* Enable IVA2 clock */
-	omap2_cm_write_mod_reg(OMAP3430_CM_FCLKEN_IVA2_EN_IVA2_MASK,
-			 OMAP3430_IVA2_MOD, CM_FCLKEN);
-
-	/* Set IVA2 boot mode to 'idle' */
-	omap3_ctrl_set_iva_bootmode_idle();
-
-	/* Un-reset IVA2 */
-	omap2_prm_write_mod_reg(0, OMAP3430_IVA2_MOD, OMAP2_RM_RSTCTRL);
-
-	/* Disable IVA2 clock */
-	omap2_cm_write_mod_reg(0, OMAP3430_IVA2_MOD, CM_FCLKEN);
-
-	/* Reset IVA2 */
-	omap2_prm_write_mod_reg(OMAP3430_RST1_IVA2_MASK |
-			  OMAP3430_RST2_IVA2_MASK |
-			  OMAP3430_RST3_IVA2_MASK,
-			  OMAP3430_IVA2_MOD, OMAP2_RM_RSTCTRL);
-}
-
-static void __init omap3_d2d_idle(void)
-{
-	u16 mask, padconf;
-
-	/* In a stand alone OMAP3430 where there is not a stacked
-	 * modem for the D2D Idle Ack and D2D MStandby must be pulled
-	 * high. S CONTROL_PADCONF_SAD2D_IDLEACK and
-	 * CONTROL_PADCONF_SAD2D_MSTDBY to have a pull up. */
-	mask = (1 << 4) | (1 << 3); /* pull-up, enabled */
-	padconf = omap_ctrl_readw(OMAP3_PADCONF_SAD2D_MSTANDBY);
-	padconf |= mask;
-	omap_ctrl_writew(padconf, OMAP3_PADCONF_SAD2D_MSTANDBY);
-
-	padconf = omap_ctrl_readw(OMAP3_PADCONF_SAD2D_IDLEACK);
-	padconf |= mask;
-	omap_ctrl_writew(padconf, OMAP3_PADCONF_SAD2D_IDLEACK);
-
-	/* reset modem */
-	omap2_prm_write_mod_reg(OMAP3430_RM_RSTCTRL_CORE_MODEM_SW_RSTPWRON_MASK |
-			  OMAP3430_RM_RSTCTRL_CORE_MODEM_SW_RST_MASK,
-			  CORE_MOD, OMAP2_RM_RSTCTRL);
-	omap2_prm_write_mod_reg(0, CORE_MOD, OMAP2_RM_RSTCTRL);
-}
-
 static void __init prcm_setup_regs(void)
 {
-	u32 omap3630_en_uart4_mask = cpu_is_omap3630() ?
-					OMAP3630_EN_UART4_MASK : 0;
-	u32 omap3630_grpsel_uart4_mask = cpu_is_omap3630() ?
-					OMAP3630_GRPSEL_UART4_MASK : 0;
-
-	/* XXX This should be handled by hwmod code or SCM init code */
-	omap_ctrl_writel(OMAP3430_AUTOIDLE_MASK, OMAP2_CONTROL_SYSCONFIG);
-
-	/*
-	 * Enable control of expternal oscillator through
-	 * sys_clkreq. In the long run clock framework should
-	 * take care of this.
-	 */
-	omap2_prm_rmw_mod_reg_bits(OMAP_AUTOEXTCLKMODE_MASK,
-			     1 << OMAP_AUTOEXTCLKMODE_SHIFT,
-			     OMAP3430_GR_MOD,
-			     OMAP3_PRM_CLKSRC_CTRL_OFFSET);
-
-	/* setup wakup source */
-	omap2_prm_write_mod_reg(OMAP3430_EN_IO_MASK | OMAP3430_EN_GPIO1_MASK |
-			  OMAP3430_EN_GPT1_MASK | OMAP3430_EN_GPT12_MASK,
-			  WKUP_MOD, PM_WKEN);
-	/* No need to write EN_IO, that is always enabled */
-	omap2_prm_write_mod_reg(OMAP3430_GRPSEL_GPIO1_MASK |
-			  OMAP3430_GRPSEL_GPT1_MASK |
-			  OMAP3430_GRPSEL_GPT12_MASK,
-			  WKUP_MOD, OMAP3430_PM_MPUGRPSEL);
-
-	/* Enable PM_WKEN to support DSS LPR */
-	omap2_prm_write_mod_reg(OMAP3430_PM_WKEN_DSS_EN_DSS_MASK,
-				OMAP3430_DSS_MOD, PM_WKEN);
-
-	/* Enable wakeups in PER */
-	omap2_prm_write_mod_reg(omap3630_en_uart4_mask |
-			  OMAP3430_EN_GPIO2_MASK | OMAP3430_EN_GPIO3_MASK |
-			  OMAP3430_EN_GPIO4_MASK | OMAP3430_EN_GPIO5_MASK |
-			  OMAP3430_EN_GPIO6_MASK | OMAP3430_EN_UART3_MASK |
-			  OMAP3430_EN_MCBSP2_MASK | OMAP3430_EN_MCBSP3_MASK |
-			  OMAP3430_EN_MCBSP4_MASK,
-			  OMAP3430_PER_MOD, PM_WKEN);
-	/* and allow them to wake up MPU */
-	omap2_prm_write_mod_reg(omap3630_grpsel_uart4_mask |
-			  OMAP3430_GRPSEL_GPIO2_MASK |
-			  OMAP3430_GRPSEL_GPIO3_MASK |
-			  OMAP3430_GRPSEL_GPIO4_MASK |
-			  OMAP3430_GRPSEL_GPIO5_MASK |
-			  OMAP3430_GRPSEL_GPIO6_MASK |
-			  OMAP3430_GRPSEL_UART3_MASK |
-			  OMAP3430_GRPSEL_MCBSP2_MASK |
-			  OMAP3430_GRPSEL_MCBSP3_MASK |
-			  OMAP3430_GRPSEL_MCBSP4_MASK,
-			  OMAP3430_PER_MOD, OMAP3430_PM_MPUGRPSEL);
-
-	/* Don't attach IVA interrupts */
-	if (omap3_has_iva()) {
-		omap2_prm_write_mod_reg(0, WKUP_MOD, OMAP3430_PM_IVAGRPSEL);
-		omap2_prm_write_mod_reg(0, CORE_MOD, OMAP3430_PM_IVAGRPSEL1);
-		omap2_prm_write_mod_reg(0, CORE_MOD, OMAP3430ES2_PM_IVAGRPSEL3);
-		omap2_prm_write_mod_reg(0, OMAP3430_PER_MOD,
-					OMAP3430_PM_IVAGRPSEL);
-	}
-
-	/* Clear any pending 'reset' flags */
-	omap2_prm_write_mod_reg(0xffffffff, MPU_MOD, OMAP2_RM_RSTST);
-	omap2_prm_write_mod_reg(0xffffffff, CORE_MOD, OMAP2_RM_RSTST);
-	omap2_prm_write_mod_reg(0xffffffff, OMAP3430_PER_MOD, OMAP2_RM_RSTST);
-	omap2_prm_write_mod_reg(0xffffffff, OMAP3430_EMU_MOD, OMAP2_RM_RSTST);
-	omap2_prm_write_mod_reg(0xffffffff, OMAP3430_NEON_MOD, OMAP2_RM_RSTST);
-	omap2_prm_write_mod_reg(0xffffffff, OMAP3430_DSS_MOD, OMAP2_RM_RSTST);
-	omap2_prm_write_mod_reg(0xffffffff, OMAP3430ES2_USBHOST_MOD, OMAP2_RM_RSTST);
-
-	/* Clear any pending PRCM interrupts */
-	omap2_prm_write_mod_reg(0, OCP_MOD, OMAP3_PRM_IRQSTATUS_MPU_OFFSET);
-
-	/*
-	 * We need to idle iva2_pwrdm even on am3703 with no iva2.
-	 */
-	omap3_iva_idle();
+	omap3_ctrl_init();
 
-	omap3_d2d_idle();
+	omap3_prm_init_pm(cpu_is_omap3630(), omap3_has_iva());
 }
 
 void omap3_pm_off_mode_enable(int enable)

arch/arm/mach-omap2/prm2xxx.c

@@ -114,6 +114,24 @@ void omap2xxx_prm_dpll_reset(void)
 	omap2_prm_read_mod_reg(WKUP_MOD, OMAP2_RM_RSTCTRL);
 }
 
+/**
+ * omap2xxx_prm_clear_mod_irqs - clear wakeup status bits for a module
+ * @module: PRM module to clear wakeups from
+ * @regs: register offset to clear
+ * @wkst_mask: wakeup status mask to clear
+ *
+ * Clears wakeup status bits for a given module, so that the device can
+ * re-enter idle.
+ */
+void omap2xxx_prm_clear_mod_irqs(s16 module, u8 regs, u32 wkst_mask)
+{
+	u32 wkst;
+
+	wkst = omap2_prm_read_mod_reg(module, regs);
+	wkst &= wkst_mask;
+	omap2_prm_write_mod_reg(wkst, module, regs);
+}
+
 int omap2xxx_clkdm_sleep(struct clockdomain *clkdm)
 {
 	omap2_prm_set_mod_reg_bits(OMAP24XX_FORCESTATE_MASK,

arch/arm/mach-omap2/prm2xxx.h

@@ -125,6 +125,7 @@ extern int omap2xxx_clkdm_sleep(struct clockdomain *clkdm);
 extern int omap2xxx_clkdm_wakeup(struct clockdomain *clkdm);
 
 extern void omap2xxx_prm_dpll_reset(void);
+void omap2xxx_prm_clear_mod_irqs(s16 module, u8 regs, u32 wkst_mask);
 
 extern int __init omap2xxx_prm_init(void);
 

arch/arm/mach-omap2/prm3xxx.c

@@ -26,6 +26,8 @@
 #include "prm2xxx_3xxx.h"
 #include "cm2xxx_3xxx.h"
 #include "prm-regbits-34xx.h"
+#include "cm3xxx.h"
+#include "cm-regbits-34xx.h"
 
 static const struct omap_prcm_irq omap3_prcm_irqs[] = {
 	OMAP_PRCM_IRQ("wkup",	0,	0),
@@ -205,6 +207,167 @@ void omap3xxx_prm_restore_irqen(u32 *saved_mask)
 				OMAP3_PRM_IRQENABLE_MPU_OFFSET);
 }
 
+/**
+ * omap3xxx_prm_clear_mod_irqs - clear wake-up events from PRCM interrupt
+ * @module: PRM module to clear wakeups from
+ * @regs: register set to clear, 1 or 3
+ * @ignore_bits: wakeup status bits to ignore
+ *
+ * The purpose of this function is to clear any wake-up events latched
+ * in the PRCM PM_WKST_x registers. It is possible that a wake-up event
+ * may occur whilst attempting to clear a PM_WKST_x register and thus
+ * set another bit in this register. A while loop is used to ensure
+ * that any peripheral wake-up events occurring while attempting to
+ * clear the PM_WKST_x are detected and cleared.
+ */
+int omap3xxx_prm_clear_mod_irqs(s16 module, u8 regs, u32 ignore_bits)
+{
+	u32 wkst, fclk, iclk, clken;
+	u16 wkst_off = (regs == 3) ? OMAP3430ES2_PM_WKST3 : PM_WKST1;
+	u16 fclk_off = (regs == 3) ? OMAP3430ES2_CM_FCLKEN3 : CM_FCLKEN1;
+	u16 iclk_off = (regs == 3) ? CM_ICLKEN3 : CM_ICLKEN1;
+	u16 grpsel_off = (regs == 3) ?
+		OMAP3430ES2_PM_MPUGRPSEL3 : OMAP3430_PM_MPUGRPSEL;
+	int c = 0;
+
+	wkst = omap2_prm_read_mod_reg(module, wkst_off);
+	wkst &= omap2_prm_read_mod_reg(module, grpsel_off);
+	wkst &= ~ignore_bits;
+	if (wkst) {
+		iclk = omap2_cm_read_mod_reg(module, iclk_off);
+		fclk = omap2_cm_read_mod_reg(module, fclk_off);
+		while (wkst) {
+			clken = wkst;
+			omap2_cm_set_mod_reg_bits(clken, module, iclk_off);
+			/*
+			 * For USBHOST, we don't know whether HOST1 or
+			 * HOST2 woke us up, so enable both f-clocks
+			 */
+			if (module == OMAP3430ES2_USBHOST_MOD)
+				clken |= 1 << OMAP3430ES2_EN_USBHOST2_SHIFT;
+			omap2_cm_set_mod_reg_bits(clken, module, fclk_off);
+			omap2_prm_write_mod_reg(wkst, module, wkst_off);
+			wkst = omap2_prm_read_mod_reg(module, wkst_off);
+			wkst &= ~ignore_bits;
+			c++;
+		}
+		omap2_cm_write_mod_reg(iclk, module, iclk_off);
+		omap2_cm_write_mod_reg(fclk, module, fclk_off);
+	}
+
+	return c;
+}
+
+/**
+ * omap3_prm_reset_modem - toggle reset signal for modem
+ *
+ * Toggles the reset signal to modem IP block. Required to allow
+ * OMAP3430 without stacked modem to idle properly.
+ */
+void __init omap3_prm_reset_modem(void)
+{
+	omap2_prm_write_mod_reg(
+		OMAP3430_RM_RSTCTRL_CORE_MODEM_SW_RSTPWRON_MASK |
+		OMAP3430_RM_RSTCTRL_CORE_MODEM_SW_RST_MASK,
+				CORE_MOD, OMAP2_RM_RSTCTRL);
+	omap2_prm_write_mod_reg(0, CORE_MOD, OMAP2_RM_RSTCTRL);
+}
+
+/**
+ * omap3_prm_init_pm - initialize PM related registers for PRM
+ * @has_uart4: SoC has UART4
+ * @has_iva: SoC has IVA
+ *
+ * Initializes PRM registers for PM use. Called from PM init.
+ */
+void __init omap3_prm_init_pm(bool has_uart4, bool has_iva)
+{
+	u32 en_uart4_mask;
+	u32 grpsel_uart4_mask;
+
+	/*
+	 * Enable control of expternal oscillator through
+	 * sys_clkreq. In the long run clock framework should
+	 * take care of this.
+	 */
+	omap2_prm_rmw_mod_reg_bits(OMAP_AUTOEXTCLKMODE_MASK,
+				   1 << OMAP_AUTOEXTCLKMODE_SHIFT,
+				   OMAP3430_GR_MOD,
+				   OMAP3_PRM_CLKSRC_CTRL_OFFSET);
+
+	/* setup wakup source */
+	omap2_prm_write_mod_reg(OMAP3430_EN_IO_MASK | OMAP3430_EN_GPIO1_MASK |
+				OMAP3430_EN_GPT1_MASK | OMAP3430_EN_GPT12_MASK,
+				WKUP_MOD, PM_WKEN);
+	/* No need to write EN_IO, that is always enabled */
+	omap2_prm_write_mod_reg(OMAP3430_GRPSEL_GPIO1_MASK |
+				OMAP3430_GRPSEL_GPT1_MASK |
+				OMAP3430_GRPSEL_GPT12_MASK,
+				WKUP_MOD, OMAP3430_PM_MPUGRPSEL);
+
+	/* Enable PM_WKEN to support DSS LPR */
+	omap2_prm_write_mod_reg(OMAP3430_PM_WKEN_DSS_EN_DSS_MASK,
+				OMAP3430_DSS_MOD, PM_WKEN);
+
+	if (has_uart4) {
+		en_uart4_mask = OMAP3630_EN_UART4_MASK;
+		grpsel_uart4_mask = OMAP3630_GRPSEL_UART4_MASK;
+	}
+
+	/* Enable wakeups in PER */
+	omap2_prm_write_mod_reg(en_uart4_mask |
+				OMAP3430_EN_GPIO2_MASK |
+				OMAP3430_EN_GPIO3_MASK |
+				OMAP3430_EN_GPIO4_MASK |
+				OMAP3430_EN_GPIO5_MASK |
+				OMAP3430_EN_GPIO6_MASK |
+				OMAP3430_EN_UART3_MASK |
+				OMAP3430_EN_MCBSP2_MASK |
+				OMAP3430_EN_MCBSP3_MASK |
+				OMAP3430_EN_MCBSP4_MASK,
+				OMAP3430_PER_MOD, PM_WKEN);
+
+	/* and allow them to wake up MPU */
+	omap2_prm_write_mod_reg(grpsel_uart4_mask |
+				OMAP3430_GRPSEL_GPIO2_MASK |
+				OMAP3430_GRPSEL_GPIO3_MASK |
+				OMAP3430_GRPSEL_GPIO4_MASK |
+				OMAP3430_GRPSEL_GPIO5_MASK |
+				OMAP3430_GRPSEL_GPIO6_MASK |
+				OMAP3430_GRPSEL_UART3_MASK |
+				OMAP3430_GRPSEL_MCBSP2_MASK |
+				OMAP3430_GRPSEL_MCBSP3_MASK |
+				OMAP3430_GRPSEL_MCBSP4_MASK,
+				OMAP3430_PER_MOD, OMAP3430_PM_MPUGRPSEL);
+
+	/* Don't attach IVA interrupts */
+	if (has_iva) {
+		omap2_prm_write_mod_reg(0, WKUP_MOD, OMAP3430_PM_IVAGRPSEL);
+		omap2_prm_write_mod_reg(0, CORE_MOD, OMAP3430_PM_IVAGRPSEL1);
+		omap2_prm_write_mod_reg(0, CORE_MOD, OMAP3430ES2_PM_IVAGRPSEL3);
+		omap2_prm_write_mod_reg(0, OMAP3430_PER_MOD,
+					OMAP3430_PM_IVAGRPSEL);
+	}
+
+	/* Clear any pending 'reset' flags */
+	omap2_prm_write_mod_reg(0xffffffff, MPU_MOD, OMAP2_RM_RSTST);
+	omap2_prm_write_mod_reg(0xffffffff, CORE_MOD, OMAP2_RM_RSTST);
+	omap2_prm_write_mod_reg(0xffffffff, OMAP3430_PER_MOD, OMAP2_RM_RSTST);
+	omap2_prm_write_mod_reg(0xffffffff, OMAP3430_EMU_MOD, OMAP2_RM_RSTST);
+	omap2_prm_write_mod_reg(0xffffffff, OMAP3430_NEON_MOD, OMAP2_RM_RSTST);
+	omap2_prm_write_mod_reg(0xffffffff, OMAP3430_DSS_MOD, OMAP2_RM_RSTST);
+	omap2_prm_write_mod_reg(0xffffffff, OMAP3430ES2_USBHOST_MOD,
+				OMAP2_RM_RSTST);
+
+	/* Clear any pending PRCM interrupts */
+	omap2_prm_write_mod_reg(0, OCP_MOD, OMAP3_PRM_IRQSTATUS_MPU_OFFSET);
+
+	/* We need to idle iva2_pwrdm even on am3703 with no iva2. */
+	omap3xxx_prm_iva_idle();
+
+	omap3_prm_reset_modem();
+}
+
 /**
  * omap3xxx_prm_reconfigure_io_chain - clear latches and reconfigure I/O chain
  *
@@ -276,6 +439,76 @@ static u32 omap3xxx_prm_read_reset_sources(void)
 	return r;
 }
 
+/**
+ * omap3xxx_prm_iva_idle - ensure IVA is in idle so it can be put into retention
+ *
+ * In cases where IVA2 is activated by bootcode, it may prevent
+ * full-chip retention or off-mode because it is not idle.  This
+ * function forces the IVA2 into idle state so it can go
+ * into retention/off and thus allow full-chip retention/off.
+ */
+void omap3xxx_prm_iva_idle(void)
+{
+	/* ensure IVA2 clock is disabled */
+	omap2_cm_write_mod_reg(0, OMAP3430_IVA2_MOD, CM_FCLKEN);
+
+	/* if no clock activity, nothing else to do */
+	if (!(omap2_cm_read_mod_reg(OMAP3430_IVA2_MOD, OMAP3430_CM_CLKSTST) &
+	      OMAP3430_CLKACTIVITY_IVA2_MASK))
+		return;
+
+	/* Reset IVA2 */
+	omap2_prm_write_mod_reg(OMAP3430_RST1_IVA2_MASK |
+				OMAP3430_RST2_IVA2_MASK |
+				OMAP3430_RST3_IVA2_MASK,
+				OMAP3430_IVA2_MOD, OMAP2_RM_RSTCTRL);
+
+	/* Enable IVA2 clock */
+	omap2_cm_write_mod_reg(OMAP3430_CM_FCLKEN_IVA2_EN_IVA2_MASK,
+			       OMAP3430_IVA2_MOD, CM_FCLKEN);
+
+	/* Un-reset IVA2 */
+	omap2_prm_write_mod_reg(0, OMAP3430_IVA2_MOD, OMAP2_RM_RSTCTRL);
+
+	/* Disable IVA2 clock */
+	omap2_cm_write_mod_reg(0, OMAP3430_IVA2_MOD, CM_FCLKEN);
+
+	/* Reset IVA2 */
+	omap2_prm_write_mod_reg(OMAP3430_RST1_IVA2_MASK |
+				OMAP3430_RST2_IVA2_MASK |
+				OMAP3430_RST3_IVA2_MASK,
+				OMAP3430_IVA2_MOD, OMAP2_RM_RSTCTRL);
+}
+
+/**
+ * omap3xxx_prm_clear_global_cold_reset - checks the global cold reset status
+ *					  and clears it if asserted
+ *
+ * Checks if cold-reset has occurred and clears the status bit if yes. Returns
+ * 1 if cold-reset has occurred, 0 otherwise.
+ */
+int omap3xxx_prm_clear_global_cold_reset(void)
+{
+	if (omap2_prm_read_mod_reg(OMAP3430_GR_MOD, OMAP3_PRM_RSTST_OFFSET) &
+	    OMAP3430_GLOBAL_COLD_RST_MASK) {
+		omap2_prm_set_mod_reg_bits(OMAP3430_GLOBAL_COLD_RST_MASK,
+					   OMAP3430_GR_MOD,
+					   OMAP3_PRM_RSTST_OFFSET);
+		return 1;
+	}
+
+	return 0;
+}
+
+void omap3_prm_save_scratchpad_contents(u32 *ptr)
+{
+	*ptr++ = omap2_prm_read_mod_reg(OMAP3430_GR_MOD,
+					OMAP3_PRM_CLKSRC_CTRL_OFFSET);
+
+	*ptr++ = omap2_prm_read_mod_reg(OMAP3430_GR_MOD,
+					OMAP3_PRM_CLKSEL_OFFSET);
+}
+
 /* Powerdomain low-level functions */
 
 static int omap3_pwrdm_set_next_pwrst(struct powerdomain *pwrdm, u8 pwrst)

arch/arm/mach-omap2/prm3xxx.h

@@ -162,6 +162,12 @@ extern void omap3xxx_prm_dpll3_reset(void);
 
 extern int __init omap3xxx_prm_init(void);
 extern u32 omap3xxx_prm_get_reset_sources(void);
+int omap3xxx_prm_clear_mod_irqs(s16 module, u8 regs, u32 ignore_bits);
+void omap3xxx_prm_iva_idle(void);
+void omap3_prm_reset_modem(void);
+int omap3xxx_prm_clear_global_cold_reset(void);
+void omap3_prm_save_scratchpad_contents(u32 *ptr);
+void omap3_prm_init_pm(bool has_uart4, bool has_iva);
 
 #endif /* __ASSEMBLER */