Merge tag 'omap-for-v3.8/devel-prcm-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into next/pm2

From Tony Lindgren:

omap prcm changes via Paul Walmsley <paul@pwsan.com>:

Some miscellaneous OMAP hwmod changes for 3.8, along with a PRM
change needed for one of the hwmod patches to function.

Basic test logs for this branch on top of Tony's
omap-for-v3.8/clock branch at commit
558a0780b0a04862a678f7823215424b4e5501f9 are here:

http://www.pwsan.com/omap/testlogs/hwmod_devel_a_3.8/20121121161522/

However, omap-for-v3.8/clock at 558a0780 does not include some fixes
that are needed for a successful test.  With several reverts,
fixes, and workarounds applied, the following test logs were
obtained:

http://www.pwsan.com/omap/testlogs/TEST_hwmod_devel_a_3.8/20121121162719/

which indicate that the series tests cleanly.

* tag 'omap-for-v3.8/devel-prcm-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap: (49 commits)
  ARM: OMAP2+: omap_device: Correct resource handling for DT boot
  ARM: OMAP2+: hwmod: Add possibility to count hwmod resources based on type
  ARM: OMAP2+: hwmod: Add support for per hwmod/module context lost count
  ARM: OMAP2+: PRM: initialize some PRM functions early
  ARM: OMAP2+: clock: Cleanup !CONFIG_COMMON_CLK parts
  ARM: OMAP2xxx: clock: drop obsolete clock data
  ARM: OMAP2: clock: Cleanup !CONFIG_COMMON_CLK parts
  ARM: OMAP3+: DPLL: drop !CONFIG_COMMON_CLK sections
  ARM: AM33xx: clock: drop obsolete clock data
  ARM: OMAP3xxx: clk: drop obsolete clock data
  ARM: OMAP3: clock: Cleanup !CONFIG_COMMON_CLK parts
  ARM: OMAP44xx: clock: drop obsolete clock data
  ARM: OMAP4: clock: Cleanup !CONFIG_COMMON_CLK parts
  ARM: OMAP: hwmod: Cleanup !CONFIG_COMMON_CLK parts
  ARM: OMAP: clock: Switch to COMMON clk
  ARM: OMAP2: clock: Add 24xx data using common struct clk
  ARM: OMAP3: clock: Add 3xxx data using common struct clk
  ARM: AM33XX: clock: add clock data in common clock format
  ARM: OMAP4: clock: Add 44xx data using common struct clk
  ARM: OMAP2+: clock: add OMAP CCF convenience macros to mach-omap2/clock.h
  ...

Some context conflicts due to nearby changes resolved in
arch/arm/mach-omap2/io.c.

Signed-off-by: Olof Johansson <olof@lixom.net>

1 files changed, 90 insertions, 93 deletions

diff --git a/arch/arm/mach-omap2/dpll3xxx.c b/arch/arm/mach-omap2/dpll3xxx.c
index eacf51f..fafb28c 100644
--- a/arch/arm/mach-omap2/dpll3xxx.c
+++ b/arch/arm/mach-omap2/dpll3xxx.c
@@ -29,6 +29,7 @@
 #include <linux/clkdev.h>
 
 #include "soc.h"
+#include "clockdomain.h"
 #include "clock.h"
 #include "cm2xxx_3xxx.h"
 #include "cm-regbits-34xx.h"
@@ -42,7 +43,7 @@
 /* Private functions */
 
 /* _omap3_dpll_write_clken - write clken_bits arg to a DPLL's enable bits */
-static void _omap3_dpll_write_clken(struct clk *clk, u8 clken_bits)
+static void _omap3_dpll_write_clken(struct clk_hw_omap *clk, u8 clken_bits)
 {
 	const struct dpll_data *dd;
 	u32 v;
@@ -56,7 +57,7 @@ static void _omap3_dpll_write_clken(struct clk *clk, u8 clken_bits)
 }
 
 /* _omap3_wait_dpll_status: wait for a DPLL to enter a specific state */
-static int _omap3_wait_dpll_status(struct clk *clk, u8 state)
+static int _omap3_wait_dpll_status(struct clk_hw_omap *clk, u8 state)
 {
 	const struct dpll_data *dd;
 	int i = 0;
@@ -64,7 +65,7 @@ static int _omap3_wait_dpll_status(struct clk *clk, u8 state)
 	const char *clk_name;
 
 	dd = clk->dpll_data;
-	clk_name = __clk_get_name(clk);
+	clk_name = __clk_get_name(clk->hw.clk);
 
 	state <<= __ffs(dd->idlest_mask);
 
@@ -88,7 +89,7 @@ static int _omap3_wait_dpll_status(struct clk *clk, u8 state)
 }
 
 /* From 3430 TRM ES2 4.7.6.2 */
-static u16 _omap3_dpll_compute_freqsel(struct clk *clk, u8 n)
+static u16 _omap3_dpll_compute_freqsel(struct clk_hw_omap *clk, u8 n)
 {
 	unsigned long fint;
 	u16 f = 0;
@@ -133,14 +134,14 @@ static u16 _omap3_dpll_compute_freqsel(struct clk *clk, u8 n)
  * locked successfully, return 0; if the DPLL did not lock in the time
  * allotted, or DPLL3 was passed in, return -EINVAL.
  */
-static int _omap3_noncore_dpll_lock(struct clk *clk)
+static int _omap3_noncore_dpll_lock(struct clk_hw_omap *clk)
 {
 	const struct dpll_data *dd;
 	u8 ai;
 	u8 state = 1;
 	int r = 0;
 
-	pr_debug("clock: locking DPLL %s\n", __clk_get_name(clk));
+	pr_debug("clock: locking DPLL %s\n", __clk_get_name(clk->hw.clk));
 
 	dd = clk->dpll_data;
 	state <<= __ffs(dd->idlest_mask);
@@ -178,7 +179,7 @@ done:
  * DPLL3 was passed in, or the DPLL does not support low-power bypass,
  * return -EINVAL.
  */
-static int _omap3_noncore_dpll_bypass(struct clk *clk)
+static int _omap3_noncore_dpll_bypass(struct clk_hw_omap *clk)
 {
 	int r;
 	u8 ai;
@@ -187,7 +188,7 @@ static int _omap3_noncore_dpll_bypass(struct clk *clk)
 		return -EINVAL;
 
 	pr_debug("clock: configuring DPLL %s for low-power bypass\n",
-		 __clk_get_name(clk));
+		 __clk_get_name(clk->hw.clk));
 
 	ai = omap3_dpll_autoidle_read(clk);
 
@@ -210,14 +211,14 @@ static int _omap3_noncore_dpll_bypass(struct clk *clk)
  * code.  If DPLL3 was passed in, or the DPLL does not support
  * low-power stop, return -EINVAL; otherwise, return 0.
  */
-static int _omap3_noncore_dpll_stop(struct clk *clk)
+static int _omap3_noncore_dpll_stop(struct clk_hw_omap *clk)
 {
 	u8 ai;
 
 	if (!(clk->dpll_data->modes & (1 << DPLL_LOW_POWER_STOP)))
 		return -EINVAL;
 
-	pr_debug("clock: stopping DPLL %s\n", __clk_get_name(clk));
+	pr_debug("clock: stopping DPLL %s\n", __clk_get_name(clk->hw.clk));
 
 	ai = omap3_dpll_autoidle_read(clk);
 
@@ -241,11 +242,11 @@ static int _omap3_noncore_dpll_stop(struct clk *clk)
  * XXX This code is not needed for 3430/AM35xx; can it be optimized
  * out in non-multi-OMAP builds for those chips?
  */
-static void _lookup_dco(struct clk *clk, u8 *dco, u16 m, u8 n)
+static void _lookup_dco(struct clk_hw_omap *clk, u8 *dco, u16 m, u8 n)
 {
 	unsigned long fint, clkinp; /* watch out for overflow */
 
-	clkinp = __clk_get_rate(__clk_get_parent(clk));
+	clkinp = __clk_get_rate(__clk_get_parent(clk->hw.clk));
 	fint = (clkinp / n) * m;
 
 	if (fint < 1000000000)
@@ -266,12 +267,12 @@ static void _lookup_dco(struct clk *clk, u8 *dco, u16 m, u8 n)
  * XXX This code is not needed for 3430/AM35xx; can it be optimized
  * out in non-multi-OMAP builds for those chips?
  */
-static void _lookup_sddiv(struct clk *clk, u8 *sd_div, u16 m, u8 n)
+static void _lookup_sddiv(struct clk_hw_omap *clk, u8 *sd_div, u16 m, u8 n)
 {
 	unsigned long clkinp, sd; /* watch out for overflow */
 	int mod1, mod2;
 
-	clkinp = __clk_get_rate(__clk_get_parent(clk));
+	clkinp = __clk_get_rate(__clk_get_parent(clk->hw.clk));
 
 	/*
 	 * target sigma-delta to near 250MHz
@@ -298,7 +299,8 @@ static void _lookup_sddiv(struct clk *clk, u8 *sd_div, u16 m, u8 n)
  * Program the DPLL with the supplied M, N values, and wait for the DPLL to
  * lock..  Returns -EINVAL upon error, or 0 upon success.
  */
-static int omap3_noncore_dpll_program(struct clk *clk, u16 m, u8 n, u16 freqsel)
+static int omap3_noncore_dpll_program(struct clk_hw_omap *clk, u16 m, u8 n,
+				      u16 freqsel)
 {
 	struct dpll_data *dd = clk->dpll_data;
 	u8 dco, sd_div;
@@ -355,8 +357,10 @@ static int omap3_noncore_dpll_program(struct clk *clk, u16 m, u8 n, u16 freqsel)
  *
  * Recalculate and propagate the DPLL rate.
  */
-unsigned long omap3_dpll_recalc(struct clk *clk)
+unsigned long omap3_dpll_recalc(struct clk_hw *hw, unsigned long parent_rate)
 {
+	struct clk_hw_omap *clk = to_clk_hw_omap(hw);
+
 	return omap2_get_dpll_rate(clk);
 }
 
@@ -376,8 +380,9 @@ unsigned long omap3_dpll_recalc(struct clk *clk)
  * support low-power stop, or if the DPLL took too long to enter
  * bypass or lock, return -EINVAL; otherwise, return 0.
  */
-int omap3_noncore_dpll_enable(struct clk *clk)
+int omap3_noncore_dpll_enable(struct clk_hw *hw)
 {
+	struct clk_hw_omap *clk = to_clk_hw_omap(hw);
 	int r;
 	struct dpll_data *dd;
 	struct clk *parent;
@@ -386,22 +391,26 @@ int omap3_noncore_dpll_enable(struct clk *clk)
 	if (!dd)
 		return -EINVAL;
 
-	parent = __clk_get_parent(clk);
+	if (clk->clkdm) {
+		r = clkdm_clk_enable(clk->clkdm, hw->clk);
+		if (r) {
+			WARN(1,
+			     "%s: could not enable %s's clockdomain %s: %d\n",
+			     __func__, __clk_get_name(hw->clk),
+			     clk->clkdm->name, r);
+			return r;
+		}
+	}
+
+	parent = __clk_get_parent(hw->clk);
 
-	if (__clk_get_rate(clk) == __clk_get_rate(dd->clk_bypass)) {
+	if (__clk_get_rate(hw->clk) == __clk_get_rate(dd->clk_bypass)) {
 		WARN_ON(parent != dd->clk_bypass);
 		r = _omap3_noncore_dpll_bypass(clk);
 	} else {
 		WARN_ON(parent != dd->clk_ref);
 		r = _omap3_noncore_dpll_lock(clk);
 	}
-	/*
-	 *FIXME: this is dubious - if clk->rate has changed, what about
-	 * propagating?
-	 */
-	if (!r)
-		clk->rate = (clk->recalc) ? clk->recalc(clk) :
-			omap2_get_dpll_rate(clk);
 
 	return r;
 }
@@ -413,9 +422,13 @@ int omap3_noncore_dpll_enable(struct clk *clk)
  * Instructs a non-CORE DPLL to enter low-power stop.  This function is
  * intended for use in struct clkops.  No return value.
  */
-void omap3_noncore_dpll_disable(struct clk *clk)
+void omap3_noncore_dpll_disable(struct clk_hw *hw)
 {
+	struct clk_hw_omap *clk = to_clk_hw_omap(hw);
+
 	_omap3_noncore_dpll_stop(clk);
+	if (clk->clkdm)
+		clkdm_clk_disable(clk->clkdm, hw->clk);
 }
 
 
@@ -432,80 +445,72 @@ void omap3_noncore_dpll_disable(struct clk *clk)
  * target rate if it hasn't been done already, then program and lock
  * the DPLL.  Returns -EINVAL upon error, or 0 upon success.
  */
-int omap3_noncore_dpll_set_rate(struct clk *clk, unsigned long rate)
+int omap3_noncore_dpll_set_rate(struct clk_hw *hw, unsigned long rate,
+					unsigned long parent_rate)
 {
+	struct clk_hw_omap *clk = to_clk_hw_omap(hw);
 	struct clk *new_parent = NULL;
-	unsigned long hw_rate, bypass_rate;
 	u16 freqsel = 0;
 	struct dpll_data *dd;
 	int ret;
 
-	if (!clk || !rate)
+	if (!hw || !rate)
 		return -EINVAL;
 
 	dd = clk->dpll_data;
 	if (!dd)
 		return -EINVAL;
 
-	hw_rate = (clk->recalc) ? clk->recalc(clk) : omap2_get_dpll_rate(clk);
-	if (rate == hw_rate)
-		return 0;
-
-	/*
-	 * Ensure both the bypass and ref clocks are enabled prior to
-	 * doing anything; we need the bypass clock running to reprogram
-	 * the DPLL.
-	 */
-	omap2_clk_enable(dd->clk_bypass);
-	omap2_clk_enable(dd->clk_ref);
+	__clk_prepare(dd->clk_bypass);
+	clk_enable(dd->clk_bypass);
+	__clk_prepare(dd->clk_ref);
+	clk_enable(dd->clk_ref);
 
-	bypass_rate = __clk_get_rate(dd->clk_bypass);
-	if (bypass_rate == rate &&
-	    (clk->dpll_data->modes & (1 << DPLL_LOW_POWER_BYPASS))) {
-		pr_debug("clock: %s: set rate: entering bypass.\n", clk->name);
+	if (__clk_get_rate(dd->clk_bypass) == rate &&
+	    (dd->modes & (1 << DPLL_LOW_POWER_BYPASS))) {
+		pr_debug("%s: %s: set rate: entering bypass.\n",
+			 __func__, __clk_get_name(hw->clk));
 
 		ret = _omap3_noncore_dpll_bypass(clk);
 		if (!ret)
 			new_parent = dd->clk_bypass;
 	} else {
 		if (dd->last_rounded_rate != rate)
-			rate = clk->round_rate(clk, rate);
+			rate = __clk_round_rate(hw->clk, rate);
 
 		if (dd->last_rounded_rate == 0)
 			return -EINVAL;
 
 		/* No freqsel on OMAP4 and OMAP3630 */
-		if (!soc_is_am33xx() && !cpu_is_omap44xx() && !cpu_is_omap3630()) {
+		if (!cpu_is_omap44xx() && !cpu_is_omap3630()) {
 			freqsel = _omap3_dpll_compute_freqsel(clk,
 						dd->last_rounded_n);
 			if (!freqsel)
 				WARN_ON(1);
 		}
 
-		pr_debug("clock: %s: set rate: locking rate to %lu.\n",
-			 __clk_get_name(clk), rate);
+		pr_debug("%s: %s: set rate: locking rate to %lu.\n",
+			 __func__, __clk_get_name(hw->clk), rate);
 
 		ret = omap3_noncore_dpll_program(clk, dd->last_rounded_m,
-						 dd->last_rounded_n, freqsel);
+						dd->last_rounded_n, freqsel);
 		if (!ret)
 			new_parent = dd->clk_ref;
 	}
-	if (!ret) {
-		/*
-		 * Switch the parent clock in the hierarchy, and make sure
-		 * that the new parent's usecount is correct.  Note: we
-		 * enable the new parent before disabling the old to avoid
-		 * any unnecessary hardware disable->enable transitions.
-		 */
-		if (clk->usecount) {
-			omap2_clk_enable(new_parent);
-			omap2_clk_disable(clk->parent);
-		}
-		clk_reparent(clk, new_parent);
-		clk->rate = rate;
-	}
-	omap2_clk_disable(dd->clk_ref);
-	omap2_clk_disable(dd->clk_bypass);
+	/*
+	* FIXME - this is all wrong.  common code handles reparenting and
+	* migrating prepare/enable counts.  dplls should be a multiplexer
+	* clock and this should be a set_parent operation so that all of that
+	* stuff is inherited for free
+	*/
+
+	if (!ret)
+		__clk_reparent(hw->clk, new_parent);
+
+	clk_disable(dd->clk_ref);
+	__clk_unprepare(dd->clk_ref);
+	clk_disable(dd->clk_bypass);
+	__clk_unprepare(dd->clk_bypass);
 
 	return 0;
 }
@@ -520,7 +525,7 @@ int omap3_noncore_dpll_set_rate(struct clk *clk, unsigned long rate)
  * -EINVAL if passed a null pointer or if the struct clk does not
  * appear to refer to a DPLL.
  */
-u32 omap3_dpll_autoidle_read(struct clk *clk)
+u32 omap3_dpll_autoidle_read(struct clk_hw_omap *clk)
 {
 	const struct dpll_data *dd;
 	u32 v;
@@ -549,7 +554,7 @@ u32 omap3_dpll_autoidle_read(struct clk *clk)
  * OMAP3430.  The DPLL will enter low-power stop when its downstream
  * clocks are gated.  No return value.
  */
-void omap3_dpll_allow_idle(struct clk *clk)
+void omap3_dpll_allow_idle(struct clk_hw_omap *clk)
 {
 	const struct dpll_data *dd;
 	u32 v;
@@ -559,11 +564,8 @@ void omap3_dpll_allow_idle(struct clk *clk)
 
 	dd = clk->dpll_data;
 
-	if (!dd->autoidle_reg) {
-		pr_debug("clock: DPLL %s: autoidle not supported\n",
-			__clk_get_name(clk));
+	if (!dd->autoidle_reg)
 		return;
-	}
 
 	/*
 	 * REVISIT: CORE DPLL can optionally enter low-power bypass
@@ -583,7 +585,7 @@ void omap3_dpll_allow_idle(struct clk *clk)
  *
  * Disable DPLL automatic idle control.  No return value.
  */
-void omap3_dpll_deny_idle(struct clk *clk)
+void omap3_dpll_deny_idle(struct clk_hw_omap *clk)
 {
 	const struct dpll_data *dd;
 	u32 v;
@@ -593,11 +595,8 @@ void omap3_dpll_deny_idle(struct clk *clk)
 
 	dd = clk->dpll_data;
 
-	if (!dd->autoidle_reg) {
-		pr_debug("clock: DPLL %s: autoidle not supported\n",
-			__clk_get_name(clk));
+	if (!dd->autoidle_reg)
 		return;
-	}
 
 	v = __raw_readl(dd->autoidle_reg);
 	v &= ~dd->autoidle_mask;
@@ -615,18 +614,25 @@ void omap3_dpll_deny_idle(struct clk *clk)
  * Using parent clock DPLL data, look up DPLL state.  If locked, set our
  * rate to the dpll_clk * 2; otherwise, just use dpll_clk.
  */
-unsigned long omap3_clkoutx2_recalc(struct clk *clk)
+unsigned long omap3_clkoutx2_recalc(struct clk_hw *hw,
+				    unsigned long parent_rate)
 {
 	const struct dpll_data *dd;
 	unsigned long rate;
 	u32 v;
-	struct clk *pclk;
-	unsigned long parent_rate;
+	struct clk_hw_omap *pclk = NULL;
+	struct clk *parent;
 
 	/* Walk up the parents of clk, looking for a DPLL */
-	pclk = __clk_get_parent(clk);
-	while (pclk && !pclk->dpll_data)
-		pclk = __clk_get_parent(pclk);
+	do {
+		do {
+			parent = __clk_get_parent(hw->clk);
+			hw = __clk_get_hw(parent);
+		} while (hw && (__clk_get_flags(hw->clk) & CLK_IS_BASIC));
+		if (!hw)
+			break;
+		pclk = to_clk_hw_omap(hw);
+	} while (pclk && !pclk->dpll_data);
 
 	/* clk does not have a DPLL as a parent?  error in the clock data */
 	if (!pclk) {
@@ -638,7 +644,6 @@ unsigned long omap3_clkoutx2_recalc(struct clk *clk)
 
 	WARN_ON(!dd->enable_mask);
 
-	parent_rate = __clk_get_rate(__clk_get_parent(clk));
 	v = __raw_readl(dd->control_reg) & dd->enable_mask;
 	v >>= __ffs(dd->enable_mask);
 	if ((v != OMAP3XXX_EN_DPLL_LOCKED) || (dd->flags & DPLL_J_TYPE))
@@ -649,15 +654,7 @@ unsigned long omap3_clkoutx2_recalc(struct clk *clk)
 }
 
 /* OMAP3/4 non-CORE DPLL clkops */
-
-const struct clkops clkops_omap3_noncore_dpll_ops = {
-	.enable		= omap3_noncore_dpll_enable,
-	.disable	= omap3_noncore_dpll_disable,
-	.allow_idle	= omap3_dpll_allow_idle,
-	.deny_idle	= omap3_dpll_deny_idle,
-};
-
-const struct clkops clkops_omap3_core_dpll_ops = {
+const struct clk_hw_omap_ops clkhwops_omap3_dpll = {
 	.allow_idle	= omap3_dpll_allow_idle,
 	.deny_idle	= omap3_dpll_deny_idle,
 };