1 files changed, 0 insertions, 164 deletions
diff --git a/target/linux/ipq806x/patches-4.1/136-clk-Add-safe-switch-hook.patch b/target/linux/ipq806x/patches-4.1/136-clk-Add-safe-switch-hook.patch
deleted file mode 100644
index b0d89a9..0000000
--- a/target/linux/ipq806x/patches-4.1/136-clk-Add-safe-switch-hook.patch
+++ /dev/null
@@ -1,164 +0,0 @@
-Content-Type: text/plain; charset="utf-8"
-MIME-Version: 1.0
-Content-Transfer-Encoding: 7bit
-Subject: [v3,04/13] clk: Add safe switch hook
-From: Stephen Boyd <sboyd@codeaurora.org>
-X-Patchwork-Id: 6063211
-Message-Id: <1426920332-9340-5-git-send-email-sboyd@codeaurora.org>
-To: Mike Turquette <mturquette@linaro.org>, Stephen Boyd <sboyd@codeaurora.org>
-Cc: linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org,
-	linux-pm@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
-	Viresh Kumar <viresh.kumar@linaro.org>
-Date: Fri, 20 Mar 2015 23:45:23 -0700
-
-Sometimes clocks can't accept their parent source turning off
-while the source is reprogrammed to a different rate. Most
-notably CPU clocks require a way to switch away from the current
-PLL they're running on, reprogram that PLL to a new rate, and
-then switch back to the PLL with the new rate once they're done.
-Add a hook that drivers can implement allowing them to return a
-'safe parent' that they can switch their parent to while the
-upstream source is reprogrammed to support this.
-
-Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
-
----
-This patch is good enough for Krait, but soon I'll need to 
-support a "safe rate" where we ask a clock what rate it needs to be running
-at to be sure it's within voltage constraints. Right now safe parent
-handles that problem on Krait, but on other platforms it won't work.
-
- drivers/clk/clk.c            | 61 ++++++++++++++++++++++++++++++++++++++------
- include/linux/clk-provider.h |  1 +
- 2 files changed, 54 insertions(+), 8 deletions(-)
-
---- a/drivers/clk/clk.c
-+++ b/drivers/clk/clk.c
-@@ -56,9 +56,12 @@ struct clk_core {
- 	struct clk_core		**parents;
- 	u8			num_parents;
- 	u8			new_parent_index;
-+	u8			safe_parent_index;
- 	unsigned long		rate;
- 	unsigned long		req_rate;
-+	unsigned long		old_rate;
- 	unsigned long		new_rate;
-+	struct clk_core		*safe_parent;
- 	struct clk_core		*new_parent;
- 	struct clk_core		*new_child;
- 	unsigned long		flags;
-@@ -1596,7 +1599,8 @@ out:
- static void clk_calc_subtree(struct clk_core *clk, unsigned long new_rate,
- 			     struct clk_core *new_parent, u8 p_index)
- {
--	struct clk_core *child;
-+	struct clk_core *child, *parent;
-+	struct clk_hw *parent_hw;
- 
- 	clk->new_rate = new_rate;
- 	clk->new_parent = new_parent;
-@@ -1606,6 +1610,18 @@ static void clk_calc_subtree(struct clk_
- 	if (new_parent && new_parent != clk->parent)
- 		new_parent->new_child = clk;
- 
-+	if (clk->ops->get_safe_parent) {
-+		parent_hw = clk->ops->get_safe_parent(clk->hw);
-+		if (parent_hw) {
-+			parent = parent_hw->core;
-+			p_index = clk_fetch_parent_index(clk, parent);
-+			clk->safe_parent_index = p_index;
-+			clk->safe_parent = parent;
-+		}
-+	} else {
-+		clk->safe_parent = NULL;
-+	}
-+
- 	hlist_for_each_entry(child, &clk->children, child_node) {
- 		child->new_rate = clk_recalc(child, new_rate);
- 		clk_calc_subtree(child, child->new_rate, NULL, 0);
-@@ -1710,14 +1726,43 @@ static struct clk_core *clk_propagate_ra
- 						  unsigned long event)
- {
- 	struct clk_core *child, *tmp_clk, *fail_clk = NULL;
-+	struct clk_core *old_parent;
- 	int ret = NOTIFY_DONE;
- 
--	if (clk->rate == clk->new_rate)
-+	if (clk->rate == clk->new_rate && event != POST_RATE_CHANGE)
- 		return NULL;
- 
-+	switch (event) {
-+	case PRE_RATE_CHANGE:
-+		if (clk->safe_parent)
-+			clk->ops->set_parent(clk->hw, clk->safe_parent_index);
-+		clk->old_rate = clk->rate;
-+		break;
-+	case POST_RATE_CHANGE:
-+		if (clk->safe_parent) {
-+			old_parent = __clk_set_parent_before(clk,
-+							     clk->new_parent);
-+			if (clk->ops->set_rate_and_parent) {
-+				clk->ops->set_rate_and_parent(clk->hw,
-+						clk->new_rate,
-+						clk->new_parent ?
-+						clk->new_parent->rate : 0,
-+						clk->new_parent_index);
-+			} else if (clk->ops->set_parent) {
-+				clk->ops->set_parent(clk->hw,
-+						clk->new_parent_index);
-+			}
-+			__clk_set_parent_after(clk, clk->new_parent,
-+					       old_parent);
-+		}
-+		break;
-+	}
-+
- 	if (clk->notifier_count) {
--		ret = __clk_notify(clk, event, clk->rate, clk->new_rate);
--		if (ret & NOTIFY_STOP_MASK)
-+		if (event != POST_RATE_CHANGE || clk->old_rate != clk->rate)
-+			ret = __clk_notify(clk, event, clk->old_rate,
-+					   clk->new_rate);
-+		if (ret & NOTIFY_STOP_MASK && event != POST_RATE_CHANGE)
- 			fail_clk = clk;
- 	}
- 
-@@ -1763,7 +1808,8 @@ clk_change_rate(struct clk_core *clk, un
- 
- 	old_rate = clk->rate;
- 
--	if (clk->new_parent && clk->new_parent != clk->parent) {
-+	if (clk->new_parent && clk->new_parent != clk->parent &&
-+			!clk->safe_parent) {
- 		old_parent = __clk_set_parent_before(clk, clk->new_parent);
- 		trace_clk_set_parent(clk, clk->new_parent);
- 
-@@ -1789,9 +1835,6 @@ clk_change_rate(struct clk_core *clk, un
- 
- 	clk->rate = clk->new_rate;
- 
--	if (clk->notifier_count && old_rate != clk->rate)
--		__clk_notify(clk, POST_RATE_CHANGE, old_rate, clk->rate);
--
- 	/*
- 	 * Use safe iteration, as change_rate can actually swap parents
- 	 * for certain clock types.
-@@ -1851,6 +1894,8 @@ static int clk_core_set_rate_nolock(stru
- 
- 	clk->req_rate = req_rate;
- 
-+	clk_propagate_rate_change(top, POST_RATE_CHANGE);
-+
- 	return ret;
- }
- 
---- a/include/linux/clk-provider.h
-+++ b/include/linux/clk-provider.h
-@@ -183,6 +183,7 @@ struct clk_ops {
- 					  struct clk_hw **best_parent_hw);
- 	int		(*set_parent)(struct clk_hw *hw, u8 index);
- 	u8		(*get_parent)(struct clk_hw *hw);
-+	struct clk_hw	*(*get_safe_parent)(struct clk_hw *hw);
- 	int		(*set_rate)(struct clk_hw *hw, unsigned long rate,
- 				    unsigned long parent_rate);
- 	int		(*set_rate_and_parent)(struct clk_hw *hw,