-From b9747125a8e7633ed2701a70e32dbb0442193774 Mon Sep 17 00:00:00 2001
+From patchwork Fri Dec 8 09:42:25 2017
+Content-Type: text/plain; charset="utf-8"
+MIME-Version: 1.0
+Content-Transfer-Encoding: 7bit
+Subject: [v4,07/12] clk: qcom: Add support for Krait clocks
+From: Sricharan R <sricharan@codeaurora.org>
+X-Patchwork-Id: 10102051
+Message-Id: <1512726150-7204-8-git-send-email-sricharan@codeaurora.org>
+To: mturquette@baylibre.com, sboyd@codeaurora.org,
+ devicetree@vger.kernel.org, linux-pm@vger.kernel.org,
+ linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org,
+ viresh.kumar@linaro.org, linux-arm-kernel@lists.infradead.org
+Cc: sricharan@codeaurora.org
+Date: Fri, 8 Dec 2017 15:12:25 +0530
+
From: Stephen Boyd <sboyd@codeaurora.org>
-Date: Fri, 20 Mar 2015 23:45:28 -0700
-Subject: [PATCH 41/69] clk: qcom: Add support for Krait clocks
The Krait clocks are made up of a series of muxes and a divider
that choose between a fixed rate clock and dedicated HFPLLs for
---
drivers/clk/qcom/Kconfig | 4 ++
drivers/clk/qcom/Makefile | 1 +
- drivers/clk/qcom/clk-krait.c | 167 +++++++++++++++++++++++++++++++++++++++++++
- drivers/clk/qcom/clk-krait.h | 49 +++++++++++++
- 4 files changed, 221 insertions(+)
+ drivers/clk/qcom/clk-krait.c | 134 +++++++++++++++++++++++++++++++++++++++++++
+ drivers/clk/qcom/clk-krait.h | 48 ++++++++++++++++
+ 4 files changed, 187 insertions(+)
create mode 100644 drivers/clk/qcom/clk-krait.c
create mode 100644 drivers/clk/qcom/clk-krait.h
clk-qcom-$(CONFIG_QCOM_GDSC) += gdsc.o
--- /dev/null
+++ b/drivers/clk/qcom/clk-krait.c
-@@ -0,0 +1,167 @@
+@@ -0,0 +1,134 @@
+/*
+ * Copyright (c) 2013-2014, The Linux Foundation. All rights reserved.
+ *
+ /* Don't touch mux if CPU is off as it won't work */
+ if (__clk_is_enabled(hw->clk))
+ __krait_mux_set_sel(mux, sel);
++
+ return 0;
+}
+
+ return clk_mux_get_parent(hw, sel, mux->parent_map, 0);
+}
+
-+static struct clk_hw *krait_mux_get_safe_parent(struct clk_hw *hw,
-+ unsigned long *safe_freq)
-+{
-+ int i;
-+ struct krait_mux_clk *mux = to_krait_mux_clk(hw);
-+ int num_parents = clk_hw_get_num_parents(hw);
-+
-+ i = mux->safe_sel;
-+ for (i = 0; i < num_parents; i++)
-+ if (mux->safe_sel == mux->parent_map[i])
-+ break;
-+
-+ return clk_hw_get_parent_by_index(hw, i);
-+}
-+
-+static int krait_mux_enable(struct clk_hw *hw)
-+{
-+ struct krait_mux_clk *mux = to_krait_mux_clk(hw);
-+
-+ __krait_mux_set_sel(mux, mux->en_mask);
-+
-+ return 0;
-+}
-+
-+static void krait_mux_disable(struct clk_hw *hw)
-+{
-+ struct krait_mux_clk *mux = to_krait_mux_clk(hw);
-+
-+ __krait_mux_set_sel(mux, mux->safe_sel);
-+}
-+
+const struct clk_ops krait_mux_clk_ops = {
-+ .enable = krait_mux_enable,
-+ .disable = krait_mux_disable,
+ .set_parent = krait_mux_set_parent,
+ .get_parent = krait_mux_get_parent,
+ .determine_rate = __clk_mux_determine_rate_closest,
-+ .get_safe_parent = krait_mux_get_safe_parent,
+};
+EXPORT_SYMBOL_GPL(krait_mux_clk_ops);
+
+}
+
+static int krait_div2_set_rate(struct clk_hw *hw, unsigned long rate,
-+ unsigned long parent_rate)
++ unsigned long parent_rate)
+{
+ struct krait_div2_clk *d = to_krait_div2_clk(hw);
+ unsigned long flags;
+EXPORT_SYMBOL_GPL(krait_div2_clk_ops);
--- /dev/null
+++ b/drivers/clk/qcom/clk-krait.h
-@@ -0,0 +1,49 @@
+@@ -0,0 +1,48 @@
+/*
+ * Copyright (c) 2013, The Linux Foundation. All rights reserved.
+ *
+
+struct krait_mux_clk {
+ unsigned int *parent_map;
-+ bool has_safe_parent;
-+ u8 safe_sel;
+ u32 offset;
+ u32 mask;
+ u32 shift;
+ bool lpl;
+
+ struct clk_hw hw;
++ struct notifier_block clk_nb;
+};
+
+#define to_krait_mux_clk(_hw) container_of(_hw, struct krait_mux_clk, hw)
projects / openwrt / openwrt.git / blobdiff