ipq806x: copy files to kernel 5.4

Copy files to kernel 5.4 to start porting.

Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>

1 files changed, 409 insertions, 0 deletions

diff --git a/target/linux/ipq806x/patches-5.4/0034-0010-clk-qcom-Add-Krait-clock-controller-driver.patch b/target/linux/ipq806x/patches-5.4/0034-0010-clk-qcom-Add-Krait-clock-controller-driver.patch
new file mode 100644
index 0000000000..7ee1f50f41
--- /dev/null
+++ b/target/linux/ipq806x/patches-5.4/0034-0010-clk-qcom-Add-Krait-clock-controller-driver.patch
@@ -0,0 +1,409 @@
+From bb5c4a85051e5e0be39c775b6df85521f2ae807d Mon Sep 17 00:00:00 2001
+From: Stephen Boyd <sboyd@codeaurora.org>
+Date: Tue, 14 Aug 2018 17:42:29 +0530
+Subject: [PATCH 10/12] clk: qcom: Add Krait clock controller driver
+
+The Krait CPU clocks are made up of a primary mux and secondary
+mux for each CPU and the L2, controlled via cp15 accessors. For
+Kraits within KPSSv1 each secondary mux accepts a different aux
+source, but on KPSSv2 each secondary mux accepts the same aux
+source.
+
+Cc: <devicetree@vger.kernel.org>
+Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
+Signed-off-by: Sricharan R <sricharan@codeaurora.org>
+Tested-by: Craig Tatlor <ctatlor97@gmail.com>
+Signed-off-by: Stephen Boyd <sboyd@kernel.org>
+---
+ drivers/clk/qcom/Kconfig     |   8 +
+ drivers/clk/qcom/Makefile    |   1 +
+ drivers/clk/qcom/clk-krait.c |   4 +-
+ drivers/clk/qcom/krait-cc.c  | 341 +++++++++++++++++++++++++++++++++++
+ 4 files changed, 352 insertions(+), 2 deletions(-)
+ create mode 100644 drivers/clk/qcom/krait-cc.c
+
+--- a/drivers/clk/qcom/Kconfig
++++ b/drivers/clk/qcom/Kconfig
+@@ -292,3 +292,11 @@ config KPSS_XCC
+ 	  Support for the Krait ACC and GCC clock controllers. Say Y
+ 	  if you want to support CPU frequency scaling on devices such
+ 	  as MSM8960, APQ8064, etc.
++
++config KRAITCC
++	tristate "Krait Clock Controller"
++	depends on COMMON_CLK_QCOM && ARM
++	select KRAIT_CLOCKS
++	help
++	  Support for the Krait CPU clocks on Qualcomm devices.
++	  Say Y if you want to support CPU frequency scaling.
+--- a/drivers/clk/qcom/Makefile
++++ b/drivers/clk/qcom/Makefile
+@@ -47,3 +47,4 @@ obj-$(CONFIG_SDM_VIDEOCC_845) += videocc
+ obj-$(CONFIG_SPMI_PMIC_CLKDIV) += clk-spmi-pmic-div.o
+ obj-$(CONFIG_KPSS_XCC) += kpss-xcc.o
+ obj-$(CONFIG_QCOM_HFPLL) += hfpll.o
++obj-$(CONFIG_KRAITCC) += krait-cc.o
+--- a/drivers/clk/qcom/clk-krait.c
++++ b/drivers/clk/qcom/clk-krait.c
+@@ -44,7 +44,7 @@ static int krait_mux_set_parent(struct c
+ 	struct krait_mux_clk *mux = to_krait_mux_clk(hw);
+ 	u32 sel;
+ 
+-	sel = clk_mux_reindex(index, mux->parent_map, 0);
++	sel = clk_mux_index_to_val(mux->parent_map, 0, index);
+ 	mux->en_mask = sel;
+ 	/* Don't touch mux if CPU is off as it won't work */
+ 	if (__clk_is_enabled(hw->clk))
+@@ -63,7 +63,7 @@ static u8 krait_mux_get_parent(struct cl
+ 	sel &= mux->mask;
+ 	mux->en_mask = sel;
+ 
+-	return clk_mux_get_parent(hw, sel, mux->parent_map, 0);
++	return clk_mux_val_to_index(hw, mux->parent_map, 0, sel);
+ }
+ 
+ const struct clk_ops krait_mux_clk_ops = {
+--- /dev/null
++++ b/drivers/clk/qcom/krait-cc.c
+@@ -0,0 +1,341 @@
++// SPDX-License-Identifier: GPL-2.0
++// Copyright (c) 2018, The Linux Foundation. All rights reserved.
++
++#include <linux/kernel.h>
++#include <linux/init.h>
++#include <linux/module.h>
++#include <linux/platform_device.h>
++#include <linux/err.h>
++#include <linux/io.h>
++#include <linux/of.h>
++#include <linux/of_device.h>
++#include <linux/clk.h>
++#include <linux/clk-provider.h>
++#include <linux/slab.h>
++
++#include "clk-krait.h"
++
++static unsigned int sec_mux_map[] = {
++	2,
++	0,
++};
++
++static unsigned int pri_mux_map[] = {
++	1,
++	2,
++	0,
++};
++
++static int
++krait_add_div(struct device *dev, int id, const char *s, unsigned int offset)
++{
++	struct krait_div2_clk *div;
++	struct clk_init_data init = {
++		.num_parents = 1,
++		.ops = &krait_div2_clk_ops,
++		.flags = CLK_SET_RATE_PARENT,
++	};
++	const char *p_names[1];
++	struct clk *clk;
++
++	div = devm_kzalloc(dev, sizeof(*div), GFP_KERNEL);
++	if (!div)
++		return -ENOMEM;
++
++	div->width = 2;
++	div->shift = 6;
++	div->lpl = id >= 0;
++	div->offset = offset;
++	div->hw.init = &init;
++
++	init.name = kasprintf(GFP_KERNEL, "hfpll%s_div", s);
++	if (!init.name)
++		return -ENOMEM;
++
++	init.parent_names = p_names;
++	p_names[0] = kasprintf(GFP_KERNEL, "hfpll%s", s);
++	if (!p_names[0]) {
++		kfree(init.name);
++		return -ENOMEM;
++	}
++
++	clk = devm_clk_register(dev, &div->hw);
++	kfree(p_names[0]);
++	kfree(init.name);
++
++	return PTR_ERR_OR_ZERO(clk);
++}
++
++static int
++krait_add_sec_mux(struct device *dev, int id, const char *s,
++		  unsigned int offset, bool unique_aux)
++{
++	struct krait_mux_clk *mux;
++	static const char *sec_mux_list[] = {
++		"acpu_aux",
++		"qsb",
++	};
++	struct clk_init_data init = {
++		.parent_names = sec_mux_list,
++		.num_parents = ARRAY_SIZE(sec_mux_list),
++		.ops = &krait_mux_clk_ops,
++		.flags = CLK_SET_RATE_PARENT,
++	};
++	struct clk *clk;
++
++	mux = devm_kzalloc(dev, sizeof(*mux), GFP_KERNEL);
++	if (!mux)
++		return -ENOMEM;
++
++	mux->offset = offset;
++	mux->lpl = id >= 0;
++	mux->mask = 0x3;
++	mux->shift = 2;
++	mux->parent_map = sec_mux_map;
++	mux->hw.init = &init;
++
++	init.name = kasprintf(GFP_KERNEL, "krait%s_sec_mux", s);
++	if (!init.name)
++		return -ENOMEM;
++
++	if (unique_aux) {
++		sec_mux_list[0] = kasprintf(GFP_KERNEL, "acpu%s_aux", s);
++		if (!sec_mux_list[0]) {
++			clk = ERR_PTR(-ENOMEM);
++			goto err_aux;
++		}
++	}
++
++	clk = devm_clk_register(dev, &mux->hw);
++
++	if (unique_aux)
++		kfree(sec_mux_list[0]);
++err_aux:
++	kfree(init.name);
++	return PTR_ERR_OR_ZERO(clk);
++}
++
++static struct clk *
++krait_add_pri_mux(struct device *dev, int id, const char *s,
++		  unsigned int offset)
++{
++	struct krait_mux_clk *mux;
++	const char *p_names[3];
++	struct clk_init_data init = {
++		.parent_names = p_names,
++		.num_parents = ARRAY_SIZE(p_names),
++		.ops = &krait_mux_clk_ops,
++		.flags = CLK_SET_RATE_PARENT,
++	};
++	struct clk *clk;
++
++	mux = devm_kzalloc(dev, sizeof(*mux), GFP_KERNEL);
++	if (!mux)
++		return ERR_PTR(-ENOMEM);
++
++	mux->mask = 0x3;
++	mux->shift = 0;
++	mux->offset = offset;
++	mux->lpl = id >= 0;
++	mux->parent_map = pri_mux_map;
++	mux->hw.init = &init;
++
++	init.name = kasprintf(GFP_KERNEL, "krait%s_pri_mux", s);
++	if (!init.name)
++		return ERR_PTR(-ENOMEM);
++
++	p_names[0] = kasprintf(GFP_KERNEL, "hfpll%s", s);
++	if (!p_names[0]) {
++		clk = ERR_PTR(-ENOMEM);
++		goto err_p0;
++	}
++
++	p_names[1] = kasprintf(GFP_KERNEL, "hfpll%s_div", s);
++	if (!p_names[1]) {
++		clk = ERR_PTR(-ENOMEM);
++		goto err_p1;
++	}
++
++	p_names[2] = kasprintf(GFP_KERNEL, "krait%s_sec_mux", s);
++	if (!p_names[2]) {
++		clk = ERR_PTR(-ENOMEM);
++		goto err_p2;
++	}
++
++	clk = devm_clk_register(dev, &mux->hw);
++
++	kfree(p_names[2]);
++err_p2:
++	kfree(p_names[1]);
++err_p1:
++	kfree(p_names[0]);
++err_p0:
++	kfree(init.name);
++	return clk;
++}
++
++/* id < 0 for L2, otherwise id == physical CPU number */
++static struct clk *krait_add_clks(struct device *dev, int id, bool unique_aux)
++{
++	int ret;
++	unsigned int offset;
++	void *p = NULL;
++	const char *s;
++	struct clk *clk;
++
++	if (id >= 0) {
++		offset = 0x4501 + (0x1000 * id);
++		s = p = kasprintf(GFP_KERNEL, "%d", id);
++		if (!s)
++			return ERR_PTR(-ENOMEM);
++	} else {
++		offset = 0x500;
++		s = "_l2";
++	}
++
++	ret = krait_add_div(dev, id, s, offset);
++	if (ret) {
++		clk = ERR_PTR(ret);
++		goto err;
++	}
++
++	ret = krait_add_sec_mux(dev, id, s, offset, unique_aux);
++	if (ret) {
++		clk = ERR_PTR(ret);
++		goto err;
++	}
++
++	clk = krait_add_pri_mux(dev, id, s, offset);
++err:
++	kfree(p);
++	return clk;
++}
++
++static struct clk *krait_of_get(struct of_phandle_args *clkspec, void *data)
++{
++	unsigned int idx = clkspec->args[0];
++	struct clk **clks = data;
++
++	if (idx >= 5) {
++		pr_err("%s: invalid clock index %d\n", __func__, idx);
++		return ERR_PTR(-EINVAL);
++	}
++
++	return clks[idx] ? : ERR_PTR(-ENODEV);
++}
++
++static const struct of_device_id krait_cc_match_table[] = {
++	{ .compatible = "qcom,krait-cc-v1", (void *)1UL },
++	{ .compatible = "qcom,krait-cc-v2" },
++	{}
++};
++MODULE_DEVICE_TABLE(of, krait_cc_match_table);
++
++static int krait_cc_probe(struct platform_device *pdev)
++{
++	struct device *dev = &pdev->dev;
++	const struct of_device_id *id;
++	unsigned long cur_rate, aux_rate;
++	int cpu;
++	struct clk *clk;
++	struct clk **clks;
++	struct clk *l2_pri_mux_clk;
++
++	id = of_match_device(krait_cc_match_table, dev);
++	if (!id)
++		return -ENODEV;
++
++	/* Rate is 1 because 0 causes problems for __clk_mux_determine_rate */
++	clk = clk_register_fixed_rate(dev, "qsb", NULL, 0, 1);
++	if (IS_ERR(clk))
++		return PTR_ERR(clk);
++
++	if (!id->data) {
++		clk = clk_register_fixed_factor(dev, "acpu_aux",
++						"gpll0_vote", 0, 1, 2);
++		if (IS_ERR(clk))
++			return PTR_ERR(clk);
++	}
++
++	/* Krait configurations have at most 4 CPUs and one L2 */
++	clks = devm_kcalloc(dev, 5, sizeof(*clks), GFP_KERNEL);
++	if (!clks)
++		return -ENOMEM;
++
++	for_each_possible_cpu(cpu) {
++		clk = krait_add_clks(dev, cpu, id->data);
++		if (IS_ERR(clk))
++			return PTR_ERR(clk);
++		clks[cpu] = clk;
++	}
++
++	l2_pri_mux_clk = krait_add_clks(dev, -1, id->data);
++	if (IS_ERR(l2_pri_mux_clk))
++		return PTR_ERR(l2_pri_mux_clk);
++	clks[4] = l2_pri_mux_clk;
++
++	/*
++	 * We don't want the CPU or L2 clocks to be turned off at late init
++	 * if CPUFREQ or HOTPLUG configs are disabled. So, bump up the
++	 * refcount of these clocks. Any cpufreq/hotplug manager can assume
++	 * that the clocks have already been prepared and enabled by the time
++	 * they take over.
++	 */
++	for_each_online_cpu(cpu) {
++		clk_prepare_enable(l2_pri_mux_clk);
++		WARN(clk_prepare_enable(clks[cpu]),
++		     "Unable to turn on CPU%d clock", cpu);
++	}
++
++	/*
++	 * Force reinit of HFPLLs and muxes to overwrite any potential
++	 * incorrect configuration of HFPLLs and muxes by the bootloader.
++	 * While at it, also make sure the cores are running at known rates
++	 * and print the current rate.
++	 *
++	 * The clocks are set to aux clock rate first to make sure the
++	 * secondary mux is not sourcing off of QSB. The rate is then set to
++	 * two different rates to force a HFPLL reinit under all
++	 * circumstances.
++	 */
++	cur_rate = clk_get_rate(l2_pri_mux_clk);
++	aux_rate = 384000000;
++	if (cur_rate == 1) {
++		pr_info("L2 @ QSB rate. Forcing new rate.\n");
++		cur_rate = aux_rate;
++	}
++	clk_set_rate(l2_pri_mux_clk, aux_rate);
++	clk_set_rate(l2_pri_mux_clk, 2);
++	clk_set_rate(l2_pri_mux_clk, cur_rate);
++	pr_info("L2 @ %lu KHz\n", clk_get_rate(l2_pri_mux_clk) / 1000);
++	for_each_possible_cpu(cpu) {
++		clk = clks[cpu];
++		cur_rate = clk_get_rate(clk);
++		if (cur_rate == 1) {
++			pr_info("CPU%d @ QSB rate. Forcing new rate.\n", cpu);
++			cur_rate = aux_rate;
++		}
++
++		clk_set_rate(clk, aux_rate);
++		clk_set_rate(clk, 2);
++		clk_set_rate(clk, cur_rate);
++		pr_info("CPU%d @ %lu KHz\n", cpu, clk_get_rate(clk) / 1000);
++	}
++
++	of_clk_add_provider(dev->of_node, krait_of_get, clks);
++
++	return 0;
++}
++
++static struct platform_driver krait_cc_driver = {
++	.probe = krait_cc_probe,
++	.driver = {
++		.name = "krait-cc",
++		.of_match_table = krait_cc_match_table,
++	},
++};
++module_platform_driver(krait_cc_driver);
++
++MODULE_DESCRIPTION("Krait CPU Clock Driver");
++MODULE_LICENSE("GPL v2");
++MODULE_ALIAS("platform:krait-cc");