1 files changed, 0 insertions, 386 deletions
diff --git a/target/linux/ipq806x/patches-4.4/175-add-regmap-mux-div.patch b/target/linux/ipq806x/patches-4.4/175-add-regmap-mux-div.patch
deleted file mode 100644
index b5c23b5..0000000
--- a/target/linux/ipq806x/patches-4.4/175-add-regmap-mux-div.patch
+++ /dev/null
@@ -1,386 +0,0 @@
-From 7727b1cae43e9abac746ef016c3dbf50ee81a6d6 Mon Sep 17 00:00:00 2001
-From: Georgi Djakov <georgi.djakov@linaro.org>
-Date: Wed, 18 Mar 2015 17:23:29 +0200
-Subject: clk: qcom: Add support for regmap mux-div clocks
-
-Add support for hardware that support switching both parent clocks and the
-divider at the same time. This avoids generating intermediate frequencies
-from either the old parent clock and new divider or new parent clock and
-old divider combinations.
-
-Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org>
----
- drivers/clk/qcom/Makefile             |   1 +
- drivers/clk/qcom/clk-regmap-mux-div.c | 288 ++++++++++++++++++++++++++++++++++
- drivers/clk/qcom/clk-regmap-mux-div.h |  63 ++++++++
- 3 files changed, 352 insertions(+)
- create mode 100644 drivers/clk/qcom/clk-regmap-mux-div.c
- create mode 100644 drivers/clk/qcom/clk-regmap-mux-div.h
-
---- a/drivers/clk/qcom/Makefile
-+++ b/drivers/clk/qcom/Makefile
-@@ -8,6 +8,7 @@ clk-qcom-y += clk-rcg2.o
- clk-qcom-y += clk-branch.o
- clk-qcom-y += clk-regmap-divider.o
- clk-qcom-y += clk-regmap-mux.o
-+clk-qcom-y += clk-regmap-mux-div.o
- clk-qcom-$(CONFIG_KRAIT_CLOCKS) += clk-krait.o
- obj-$(CONFIG_KPSS_XCC) += kpss-xcc.o
- clk-qcom-y += clk-hfpll.o
---- /dev/null
-+++ b/drivers/clk/qcom/clk-regmap-mux-div.c
-@@ -0,0 +1,288 @@
-+/*
-+ * Copyright (c) 2015, Linaro Limited
-+ * Copyright (c) 2014, The Linux Foundation. All rights reserved.
-+ *
-+ * This software is licensed under the terms of the GNU General Public
-+ * License version 2, as published by the Free Software Foundation, and
-+ * may be copied, distributed, and modified under those terms.
-+ *
-+ * This program is distributed in the hope that it will be useful,
-+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
-+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-+ * GNU General Public License for more details.
-+ */
-+
-+#include <linux/bitops.h>
-+#include <linux/clk.h>
-+#include <linux/delay.h>
-+#include <linux/export.h>
-+#include <linux/kernel.h>
-+#include <linux/regmap.h>
-+
-+#include "clk-regmap-mux-div.h"
-+
-+#define CMD_RCGR			0x0
-+#define CMD_RCGR_UPDATE			BIT(0)
-+#define CMD_RCGR_DIRTY_CFG		BIT(4)
-+#define CMD_RCGR_ROOT_OFF		BIT(31)
-+#define CFG_RCGR			0x4
-+
-+static int __mux_div_update_config(struct clk_regmap_mux_div *md)
-+{
-+	int ret;
-+	u32 val, count;
-+	const char *name = clk_hw_get_name(&md->clkr.hw);
-+
-+	ret = regmap_update_bits(md->clkr.regmap, CMD_RCGR + md->reg_offset,
-+				 CMD_RCGR_UPDATE, CMD_RCGR_UPDATE);
-+	if (ret)
-+		return ret;
-+
-+	/* Wait for update to take effect */
-+	for (count = 500; count > 0; count--) {
-+		ret = regmap_read(md->clkr.regmap, CMD_RCGR + md->reg_offset,
-+				  &val);
-+		if (ret)
-+			return ret;
-+		if (!(val & CMD_RCGR_UPDATE))
-+			return 0;
-+		udelay(1);
-+	}
-+
-+	pr_err("%s: RCG did not update its configuration", name);
-+	return -EBUSY;
-+}
-+
-+static int __mux_div_set_src_div(struct clk_regmap_mux_div *md, u32 src_sel,
-+				 u32 src_div)
-+{
-+	int ret;
-+	u32 val, mask;
-+
-+	val = (src_div << md->hid_shift) | (src_sel << md->src_shift);
-+	mask = ((BIT(md->hid_width) - 1) << md->hid_shift) |
-+	       ((BIT(md->src_width) - 1) << md->src_shift);
-+
-+	ret = regmap_update_bits(md->clkr.regmap, CFG_RCGR + md->reg_offset,
-+				 mask, val);
-+	if (ret)
-+		return ret;
-+
-+	return __mux_div_update_config(md);
-+}
-+
-+static void __mux_div_get_src_div(struct clk_regmap_mux_div *md, u32 *src_sel,
-+				  u32 *src_div)
-+{
-+	u32 val, div, src;
-+	const char *name = clk_hw_get_name(&md->clkr.hw);
-+
-+	regmap_read(md->clkr.regmap, CMD_RCGR + md->reg_offset, &val);
-+
-+	if (val & CMD_RCGR_DIRTY_CFG) {
-+		pr_err("%s: RCG configuration is pending\n", name);
-+		return;
-+	}
-+
-+	regmap_read(md->clkr.regmap, CFG_RCGR + md->reg_offset, &val);
-+	src = (val >> md->src_shift);
-+	src &= BIT(md->src_width) - 1;
-+	*src_sel = src;
-+
-+	div = (val >> md->hid_shift);
-+	div &= BIT(md->hid_width) - 1;
-+	*src_div = div;
-+}
-+
-+static int mux_div_enable(struct clk_hw *hw)
-+{
-+	struct clk_regmap_mux_div *md = to_clk_regmap_mux_div(hw);
-+
-+	return __mux_div_set_src_div(md, md->src_sel, md->div);
-+}
-+
-+static inline bool is_better_rate(unsigned long req, unsigned long best,
-+				  unsigned long new)
-+{
-+	return (req <= new && new < best) || (best < req && best < new);
-+}
-+
-+static int mux_div_determine_rate(struct clk_hw *hw,
-+				  struct clk_rate_request *req)
-+{
-+	struct clk_regmap_mux_div *md = to_clk_regmap_mux_div(hw);
-+	unsigned int i, div, max_div;
-+	unsigned long actual_rate, best_rate = 0;
-+	unsigned long req_rate = req->rate;
-+
-+	for (i = 0; i < clk_hw_get_num_parents(hw); i++) {
-+		struct clk_hw *parent = clk_hw_get_parent_by_index(hw, i);
-+		unsigned long parent_rate = clk_hw_get_rate(parent);
-+
-+		max_div = BIT(md->hid_width) - 1;
-+		for (div = 1; div < max_div; div++) {
-+			parent_rate = mult_frac(req_rate, div, 2);
-+			parent_rate = clk_hw_round_rate(parent, parent_rate);
-+			actual_rate = mult_frac(parent_rate, 2, div);
-+
-+			if (is_better_rate(req_rate, best_rate, actual_rate)) {
-+				best_rate = actual_rate;
-+				req->rate = best_rate;
-+				req->best_parent_rate = parent_rate;
-+				req->best_parent_hw = parent;
-+			}
-+
-+			if (actual_rate < req_rate || best_rate <= req_rate)
-+				break;
-+		}
-+	}
-+
-+	if (!best_rate)
-+		return -EINVAL;
-+
-+	return 0;
-+}
-+
-+static int __mux_div_set_rate_and_parent(struct clk_hw *hw, unsigned long rate,
-+					 unsigned long prate, u32 src_sel)
-+{
-+	struct clk_regmap_mux_div *md = to_clk_regmap_mux_div(hw);
-+	int ret, i;
-+	u32 div, max_div, best_src = 0, best_div = 0;
-+	unsigned long actual_rate, best_rate = 0;
-+
-+	for (i = 0; i < clk_hw_get_num_parents(hw); i++) {
-+		struct clk_hw *parent = clk_hw_get_parent_by_index(hw, i);
-+		unsigned long parent_rate = clk_hw_get_rate(parent);
-+
-+		max_div = BIT(md->hid_width) - 1;
-+		for (div = 1; div < max_div; div++) {
-+			parent_rate = mult_frac(rate, div, 2);
-+			parent_rate = clk_hw_round_rate(parent, parent_rate);
-+			actual_rate = mult_frac(parent_rate, 2, div);
-+
-+			if (is_better_rate(rate, best_rate, actual_rate)) {
-+				best_rate = actual_rate;
-+				best_src = md->parent_map[i].cfg;
-+				best_div = div - 1;
-+			}
-+
-+			if (actual_rate < rate || best_rate <= rate)
-+				break;
-+		}
-+	}
-+
-+	ret = __mux_div_set_src_div(md, best_src, best_div);
-+	if (!ret) {
-+		md->div = best_div;
-+		md->src_sel = best_src;
-+	}
-+
-+	return ret;
-+}
-+
-+static u8 mux_div_get_parent(struct clk_hw *hw)
-+{
-+	struct clk_regmap_mux_div *md = to_clk_regmap_mux_div(hw);
-+	const char *name = clk_hw_get_name(hw);
-+	u32 i, div, src;
-+
-+	__mux_div_get_src_div(md, &src, &div);
-+
-+	for (i = 0; i < clk_hw_get_num_parents(hw); i++)
-+		if (src == md->parent_map[i].cfg)
-+			return i;
-+
-+	pr_err("%s: Can't find parent %d\n", name, src);
-+	return 0;
-+}
-+
-+static int mux_div_set_parent(struct clk_hw *hw, u8 index)
-+{
-+	struct clk_regmap_mux_div *md = to_clk_regmap_mux_div(hw);
-+
-+	return __mux_div_set_src_div(md, md->parent_map[index].cfg, md->div);
-+}
-+
-+static int mux_div_set_rate(struct clk_hw *hw,
-+			    unsigned long rate, unsigned long prate)
-+{
-+	struct clk_regmap_mux_div *md = to_clk_regmap_mux_div(hw);
-+
-+	return __mux_div_set_rate_and_parent(hw, rate, prate, md->src_sel);
-+}
-+
-+static int mux_div_set_rate_and_parent(struct clk_hw *hw,  unsigned long rate,
-+				       unsigned long prate, u8 index)
-+{
-+	struct clk_regmap_mux_div *md = to_clk_regmap_mux_div(hw);
-+
-+	return __mux_div_set_rate_and_parent(hw, rate, prate,
-+					     md->parent_map[index].cfg);
-+}
-+
-+static unsigned long mux_div_recalc_rate(struct clk_hw *hw, unsigned long prate)
-+{
-+	struct clk_regmap_mux_div *md = to_clk_regmap_mux_div(hw);
-+	u32 div, src;
-+	int i, num_parents = clk_hw_get_num_parents(hw);
-+	const char *name = clk_hw_get_name(hw);
-+
-+	__mux_div_get_src_div(md, &src, &div);
-+	for (i = 0; i < num_parents; i++)
-+		if (src == md->parent_map[i].cfg) {
-+			struct clk_hw *p = clk_hw_get_parent_by_index(hw, i);
-+			unsigned long parent_rate = clk_hw_get_rate(p);
-+
-+			return mult_frac(parent_rate, 2, div + 1);
-+		}
-+
-+	pr_err("%s: Can't find parent %d\n", name, src);
-+	return 0;
-+}
-+
-+static struct clk_hw *mux_div_get_safe_parent(struct clk_hw *hw,
-+					      unsigned long *safe_freq)
-+{
-+	int i;
-+	struct clk_regmap_mux_div *md = to_clk_regmap_mux_div(hw);
-+
-+	if (md->safe_freq)
-+		*safe_freq = md->safe_freq;
-+
-+	for (i = 0; i < clk_hw_get_num_parents(hw); i++)
-+		if (md->safe_src == md->parent_map[i].cfg)
-+			break;
-+
-+	return clk_hw_get_parent_by_index(hw, i);
-+}
-+
-+static void mux_div_disable(struct clk_hw *hw)
-+{
-+	struct clk_regmap_mux_div *md = to_clk_regmap_mux_div(hw);
-+	struct clk_hw *parent;
-+	u32 div;
-+
-+	if (!md->safe_freq || !md->safe_src)
-+		return;
-+
-+	parent = mux_div_get_safe_parent(hw, &md->safe_freq);
-+	div = divider_get_val(md->safe_freq, clk_get_rate(parent->clk), NULL,
-+			      md->hid_width, CLK_DIVIDER_ROUND_CLOSEST);
-+	div = 2 * div + 1;
-+
-+	__mux_div_set_src_div(md, md->safe_src, div);
-+}
-+
-+const struct clk_ops clk_regmap_mux_div_ops = {
-+	.enable = mux_div_enable,
-+	.disable = mux_div_disable,
-+	.get_parent = mux_div_get_parent,
-+	.set_parent = mux_div_set_parent,
-+	.set_rate = mux_div_set_rate,
-+	.set_rate_and_parent = mux_div_set_rate_and_parent,
-+	.determine_rate = mux_div_determine_rate,
-+	.recalc_rate = mux_div_recalc_rate,
-+	.get_safe_parent = mux_div_get_safe_parent,
-+};
-+EXPORT_SYMBOL_GPL(clk_regmap_mux_div_ops);
---- /dev/null
-+++ b/drivers/clk/qcom/clk-regmap-mux-div.h
-@@ -0,0 +1,63 @@
-+/*
-+ * Copyright (c) 2015, Linaro Limited
-+ * Copyright (c) 2014, The Linux Foundation. All rights reserved.
-+ *
-+ * This software is licensed under the terms of the GNU General Public
-+ * License version 2, as published by the Free Software Foundation, and
-+ * may be copied, distributed, and modified under those terms.
-+ *
-+ * This program is distributed in the hope that it will be useful,
-+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
-+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-+ * GNU General Public License for more details.
-+ */
-+
-+#ifndef __QCOM_CLK_REGMAP_MUX_DIV_H__
-+#define __QCOM_CLK_REGMAP_MUX_DIV_H__
-+
-+#include <linux/clk-provider.h>
-+#include "clk-regmap.h"
-+#include "clk-rcg.h"
-+
-+/**
-+ * struct mux_div_clk - combined mux/divider clock
-+ * @reg_offset: offset of the mux/divider register
-+ * @hid_width:	number of bits in half integer divider
-+ * @hid_shift:	lowest bit of hid value field
-+ * @src_width:	number of bits in source select
-+ * @src_shift:	lowest bit of source select field
-+ * @div:	the divider raw configuration value
-+ * @src_sel:	the mux index which will be used if the clock is enabled
-+ * @safe_src:	the safe source mux index for this clock
-+ * @safe_freq:	When switching rates from A to B, the mux div clock will
-+ *		instead switch from A -> safe_freq -> B. This allows the
-+ *		mux_div clock to change rates while enabled, even if this
-+ *		behavior is not supported by the parent clocks.
-+ *		If changing the rate of parent A also causes the rate of
-+ *		parent B to change, then safe_freq must be defined.
-+ *		safe_freq is expected to have a source clock which is always
-+ *		on and runs at only one rate.
-+ * @parent_map:	pointer to parent_map struct
-+ * @clkr:	handle between common and hardware-specific interfaces
-+ */
-+
-+struct clk_regmap_mux_div {
-+	u32				reg_offset;
-+	u32				hid_width;
-+	u32				hid_shift;
-+	u32				src_width;
-+	u32				src_shift;
-+	u32				div;
-+	u32				src_sel;
-+	u32				safe_src;
-+	unsigned long			safe_freq;
-+	const struct parent_map		*parent_map;
-+	struct clk_regmap		clkr;
-+};
-+
-+#define to_clk_regmap_mux_div(_hw) \
-+	container_of(to_clk_regmap(_hw), struct clk_regmap_mux_div, clkr)
-+
-+extern const struct clk_ops clk_regmap_mux_div_ops;
-+
-+#endif