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authorLinus Torvalds <torvalds@linux-foundation.org>2013-07-03 11:54:50 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2013-07-03 11:54:50 -0700
commit92295f632cefbdf15d46e9ac5f0fc3cfade35259 (patch)
tree5b3820d4ed135ccbef540781d99a46137959bbb6 /drivers/clk
parent750b2d7b93f2ba19f4f238cc641bda22fe07c155 (diff)
parent45e3ec3784aec0d194740b75b547bfabca448ff3 (diff)
Merge tag 'clk-for-linus-3.11' of git://git.linaro.org/people/mturquette/linux
Pull clock framework updates from Mike Turquette: "The common clock framework changes for 3.11 include new clock drivers across several different platforms and architectures, fixes to existing drivers, a MAINTAINERS file fix and improvements to the basic clock types that allow them to be of use to more platforms than before. Only a few fixes to the core framework are included with most all of the changes landing in the various clock drivers themselves." * tag 'clk-for-linus-3.11' of git://git.linaro.org/people/mturquette/linux: (55 commits) clk: tegra: fix ifdef for tegra_periph_reset_assert inline clk: tegra: provide tegra_periph_reset_assert alternative clk: exynos4: Fix clock aliases for cpufreq related clocks clk: samsung: Add MUX_FA macro to pass flag and alias clk: add support for Rockchip gate clocks clk: vexpress: Make the clock drivers directly available for arm64 clk: vexpress: Use full node name to identify individual clocks clk: tegra: T114: add DFLL DVCO reset control clk: tegra: T114: add DFLL source clocks clk: tegra: T114: add FCPU clock shaper programming, needed by the DFLL clk: gate: add CLK_GATE_HIWORD_MASK clk: divider: add CLK_DIVIDER_HIWORD_MASK flag clk: mux: add CLK_MUX_HIWORD_MASK clk: Always notify whole subtree when reparenting MAINTAINERS: make drivers/clk entry match subdirs clk: honor CLK_GET_RATE_NOCACHE in clk_set_rate clk: use clk_get_rate() for debugfs clk: tegra: Use override bits when needed clk: tegra: override bits for Tegra30 PLLM clk: tegra: override bits for Tegra114 PLLM ...
Diffstat (limited to 'drivers/clk')
-rw-r--r--drivers/clk/Kconfig10
-rw-r--r--drivers/clk/Makefile3
-rw-r--r--drivers/clk/clk-divider.c25
-rw-r--r--drivers/clk/clk-gate.c25
-rw-r--r--drivers/clk/clk-mux.c17
-rw-r--r--drivers/clk/clk-nspire.c153
-rw-r--r--drivers/clk/clk-ppc-corenet.c280
-rw-r--r--drivers/clk/clk-si5351.c79
-rw-r--r--drivers/clk/clk-si5351.h1
-rw-r--r--drivers/clk/clk-twl6040.c4
-rw-r--r--drivers/clk/clk-vt8500.c75
-rw-r--r--drivers/clk/clk-wm831x.c14
-rw-r--r--drivers/clk/clk.c100
-rw-r--r--drivers/clk/rockchip/Makefile5
-rw-r--r--drivers/clk/rockchip/clk-rockchip.c94
-rw-r--r--drivers/clk/samsung/clk-exynos4.c21
-rw-r--r--drivers/clk/samsung/clk.h3
-rw-r--r--drivers/clk/sunxi/clk-sunxi.c35
-rw-r--r--drivers/clk/tegra/clk-pll.c281
-rw-r--r--drivers/clk/tegra/clk-tegra114.c270
-rw-r--r--drivers/clk/tegra/clk-tegra20.c3
-rw-r--r--drivers/clk/tegra/clk-tegra30.c25
-rw-r--r--drivers/clk/tegra/clk.c12
-rw-r--r--drivers/clk/tegra/clk.h62
-rw-r--r--drivers/clk/ux500/abx500-clk.c8
-rw-r--r--drivers/clk/ux500/u8540_clk.c564
-rw-r--r--drivers/clk/ux500/u9540_clk.c4
-rw-r--r--drivers/clk/versatile/clk-vexpress-osc.c4
28 files changed, 1885 insertions, 292 deletions
diff --git a/drivers/clk/Kconfig b/drivers/clk/Kconfig
index 0357ac44638b..51380d655d1a 100644
--- a/drivers/clk/Kconfig
+++ b/drivers/clk/Kconfig
@@ -42,7 +42,7 @@ config COMMON_CLK_WM831X
config COMMON_CLK_VERSATILE
bool "Clock driver for ARM Reference designs"
- depends on ARCH_INTEGRATOR || ARCH_REALVIEW || ARCH_VEXPRESS
+ depends on ARCH_INTEGRATOR || ARCH_REALVIEW || ARCH_VEXPRESS || ARM64
---help---
Supports clocking on ARM Reference designs:
- Integrator/AP and Integrator/CP
@@ -58,7 +58,6 @@ config COMMON_CLK_MAX77686
config COMMON_CLK_SI5351
tristate "Clock driver for SiLabs 5351A/B/C"
depends on I2C
- depends on OF
select REGMAP_I2C
select RATIONAL
---help---
@@ -81,6 +80,13 @@ config COMMON_CLK_AXI_CLKGEN
Support for the Analog Devices axi-clkgen pcore clock generator for Xilinx
FPGAs. It is commonly used in Analog Devices' reference designs.
+config CLK_PPC_CORENET
+ bool "Clock driver for PowerPC corenet platforms"
+ depends on PPC_E500MC && OF
+ ---help---
+ This adds the clock driver support for Freescale PowerPC corenet
+ platforms using common clock framework.
+
endmenu
source "drivers/clk/mvebu/Kconfig"
diff --git a/drivers/clk/Makefile b/drivers/clk/Makefile
index f9cf7085ef70..4038c2bdf334 100644
--- a/drivers/clk/Makefile
+++ b/drivers/clk/Makefile
@@ -13,6 +13,7 @@ obj-$(CONFIG_COMMON_CLK) += clk-composite.o
obj-$(CONFIG_ARCH_BCM2835) += clk-bcm2835.o
obj-$(CONFIG_ARCH_NOMADIK) += clk-nomadik.o
obj-$(CONFIG_ARCH_HIGHBANK) += clk-highbank.o
+obj-$(CONFIG_ARCH_NSPIRE) += clk-nspire.o
obj-$(CONFIG_ARCH_MXS) += mxs/
obj-$(CONFIG_ARCH_SOCFPGA) += socfpga/
obj-$(CONFIG_PLAT_SPEAR) += spear/
@@ -24,6 +25,7 @@ ifeq ($(CONFIG_COMMON_CLK), y)
obj-$(CONFIG_ARCH_MMP) += mmp/
endif
obj-$(CONFIG_MACH_LOONGSON1) += clk-ls1x.o
+obj-$(CONFIG_ARCH_ROCKCHIP) += rockchip/
obj-$(CONFIG_ARCH_SUNXI) += sunxi/
obj-$(CONFIG_ARCH_U8500) += ux500/
obj-$(CONFIG_ARCH_VT8500) += clk-vt8500.o
@@ -39,3 +41,4 @@ obj-$(CONFIG_COMMON_CLK_WM831X) += clk-wm831x.o
obj-$(CONFIG_COMMON_CLK_MAX77686) += clk-max77686.o
obj-$(CONFIG_COMMON_CLK_SI5351) += clk-si5351.o
obj-$(CONFIG_CLK_TWL6040) += clk-twl6040.o
+obj-$(CONFIG_CLK_PPC_CORENET) += clk-ppc-corenet.o
diff --git a/drivers/clk/clk-divider.c b/drivers/clk/clk-divider.c
index 6d9674160430..6d55eb2cb959 100644
--- a/drivers/clk/clk-divider.c
+++ b/drivers/clk/clk-divider.c
@@ -150,6 +150,7 @@ static int clk_divider_bestdiv(struct clk_hw *hw, unsigned long rate,
struct clk_divider *divider = to_clk_divider(hw);
int i, bestdiv = 0;
unsigned long parent_rate, best = 0, now, maxdiv;
+ unsigned long parent_rate_saved = *best_parent_rate;
if (!rate)
rate = 1;
@@ -173,6 +174,15 @@ static int clk_divider_bestdiv(struct clk_hw *hw, unsigned long rate,
for (i = 1; i <= maxdiv; i++) {
if (!_is_valid_div(divider, i))
continue;
+ if (rate * i == parent_rate_saved) {
+ /*
+ * It's the most ideal case if the requested rate can be
+ * divided from parent clock without needing to change
+ * parent rate, so return the divider immediately.
+ */
+ *best_parent_rate = parent_rate_saved;
+ return i;
+ }
parent_rate = __clk_round_rate(__clk_get_parent(hw->clk),
MULT_ROUND_UP(rate, i));
now = parent_rate / i;
@@ -217,8 +227,12 @@ static int clk_divider_set_rate(struct clk_hw *hw, unsigned long rate,
if (divider->lock)
spin_lock_irqsave(divider->lock, flags);
- val = readl(divider->reg);
- val &= ~(div_mask(divider) << divider->shift);
+ if (divider->flags & CLK_DIVIDER_HIWORD_MASK) {
+ val = div_mask(divider) << (divider->shift + 16);
+ } else {
+ val = readl(divider->reg);
+ val &= ~(div_mask(divider) << divider->shift);
+ }
val |= value << divider->shift;
writel(val, divider->reg);
@@ -245,6 +259,13 @@ static struct clk *_register_divider(struct device *dev, const char *name,
struct clk *clk;
struct clk_init_data init;
+ if (clk_divider_flags & CLK_DIVIDER_HIWORD_MASK) {
+ if (width + shift > 16) {
+ pr_warn("divider value exceeds LOWORD field\n");
+ return ERR_PTR(-EINVAL);
+ }
+ }
+
/* allocate the divider */
div = kzalloc(sizeof(struct clk_divider), GFP_KERNEL);
if (!div) {
diff --git a/drivers/clk/clk-gate.c b/drivers/clk/clk-gate.c
index 15114febfd92..790306e921c8 100644
--- a/drivers/clk/clk-gate.c
+++ b/drivers/clk/clk-gate.c
@@ -53,12 +53,18 @@ static void clk_gate_endisable(struct clk_hw *hw, int enable)
if (gate->lock)
spin_lock_irqsave(gate->lock, flags);
- reg = readl(gate->reg);
-
- if (set)
- reg |= BIT(gate->bit_idx);
- else
- reg &= ~BIT(gate->bit_idx);
+ if (gate->flags & CLK_GATE_HIWORD_MASK) {
+ reg = BIT(gate->bit_idx + 16);
+ if (set)
+ reg |= BIT(gate->bit_idx);
+ } else {
+ reg = readl(gate->reg);
+
+ if (set)
+ reg |= BIT(gate->bit_idx);
+ else
+ reg &= ~BIT(gate->bit_idx);
+ }
writel(reg, gate->reg);
@@ -121,6 +127,13 @@ struct clk *clk_register_gate(struct device *dev, const char *name,
struct clk *clk;
struct clk_init_data init;
+ if (clk_gate_flags & CLK_GATE_HIWORD_MASK) {
+ if (bit_idx > 16) {
+ pr_err("gate bit exceeds LOWORD field\n");
+ return ERR_PTR(-EINVAL);
+ }
+ }
+
/* allocate the gate */
gate = kzalloc(sizeof(struct clk_gate), GFP_KERNEL);
if (!gate) {
diff --git a/drivers/clk/clk-mux.c b/drivers/clk/clk-mux.c
index 25b1734560d0..614444ca40cd 100644
--- a/drivers/clk/clk-mux.c
+++ b/drivers/clk/clk-mux.c
@@ -86,8 +86,12 @@ static int clk_mux_set_parent(struct clk_hw *hw, u8 index)
if (mux->lock)
spin_lock_irqsave(mux->lock, flags);
- val = readl(mux->reg);
- val &= ~(mux->mask << mux->shift);
+ if (mux->flags & CLK_MUX_HIWORD_MASK) {
+ val = mux->mask << (mux->shift + 16);
+ } else {
+ val = readl(mux->reg);
+ val &= ~(mux->mask << mux->shift);
+ }
val |= index << mux->shift;
writel(val, mux->reg);
@@ -111,6 +115,15 @@ struct clk *clk_register_mux_table(struct device *dev, const char *name,
struct clk_mux *mux;
struct clk *clk;
struct clk_init_data init;
+ u8 width = 0;
+
+ if (clk_mux_flags & CLK_MUX_HIWORD_MASK) {
+ width = fls(mask) - ffs(mask) + 1;
+ if (width + shift > 16) {
+ pr_err("mux value exceeds LOWORD field\n");
+ return ERR_PTR(-EINVAL);
+ }
+ }
/* allocate the mux */
mux = kzalloc(sizeof(struct clk_mux), GFP_KERNEL);
diff --git a/drivers/clk/clk-nspire.c b/drivers/clk/clk-nspire.c
new file mode 100644
index 000000000000..a378db7b2382
--- /dev/null
+++ b/drivers/clk/clk-nspire.c
@@ -0,0 +1,153 @@
+/*
+ *
+ * Copyright (C) 2013 Daniel Tang <tangrs@tangrs.id.au>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2, as
+ * published by the Free Software Foundation.
+ *
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/err.h>
+#include <linux/io.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+
+#define MHZ (1000 * 1000)
+
+#define BASE_CPU_SHIFT 1
+#define BASE_CPU_MASK 0x7F
+
+#define CPU_AHB_SHIFT 12
+#define CPU_AHB_MASK 0x07
+
+#define FIXED_BASE_SHIFT 8
+#define FIXED_BASE_MASK 0x01
+
+#define CLASSIC_BASE_SHIFT 16
+#define CLASSIC_BASE_MASK 0x1F
+
+#define CX_BASE_SHIFT 15
+#define CX_BASE_MASK 0x3F
+
+#define CX_UNKNOWN_SHIFT 21
+#define CX_UNKNOWN_MASK 0x03
+
+struct nspire_clk_info {
+ u32 base_clock;
+ u16 base_cpu_ratio;
+ u16 base_ahb_ratio;
+};
+
+
+#define EXTRACT(var, prop) (((var)>>prop##_SHIFT) & prop##_MASK)
+static void nspire_clkinfo_cx(u32 val, struct nspire_clk_info *clk)
+{
+ if (EXTRACT(val, FIXED_BASE))
+ clk->base_clock = 48 * MHZ;
+ else
+ clk->base_clock = 6 * EXTRACT(val, CX_BASE) * MHZ;
+
+ clk->base_cpu_ratio = EXTRACT(val, BASE_CPU) * EXTRACT(val, CX_UNKNOWN);
+ clk->base_ahb_ratio = clk->base_cpu_ratio * (EXTRACT(val, CPU_AHB) + 1);
+}
+
+static void nspire_clkinfo_classic(u32 val, struct nspire_clk_info *clk)
+{
+ if (EXTRACT(val, FIXED_BASE))
+ clk->base_clock = 27 * MHZ;
+ else
+ clk->base_clock = (300 - 6 * EXTRACT(val, CLASSIC_BASE)) * MHZ;
+
+ clk->base_cpu_ratio = EXTRACT(val, BASE_CPU) * 2;
+ clk->base_ahb_ratio = clk->base_cpu_ratio * (EXTRACT(val, CPU_AHB) + 1);
+}
+
+static void __init nspire_ahbdiv_setup(struct device_node *node,
+ void (*get_clkinfo)(u32, struct nspire_clk_info *))
+{
+ u32 val;
+ void __iomem *io;
+ struct clk *clk;
+ const char *clk_name = node->name;
+ const char *parent_name;
+ struct nspire_clk_info info;
+
+ io = of_iomap(node, 0);
+ if (!io)
+ return;
+ val = readl(io);
+ iounmap(io);
+
+ get_clkinfo(val, &info);
+
+ of_property_read_string(node, "clock-output-names", &clk_name);
+ parent_name = of_clk_get_parent_name(node, 0);
+
+ clk = clk_register_fixed_factor(NULL, clk_name, parent_name, 0,
+ 1, info.base_ahb_ratio);
+ if (!IS_ERR(clk))
+ of_clk_add_provider(node, of_clk_src_simple_get, clk);
+}
+
+static void __init nspire_ahbdiv_setup_cx(struct device_node *node)
+{
+ nspire_ahbdiv_setup(node, nspire_clkinfo_cx);
+}
+
+static void __init nspire_ahbdiv_setup_classic(struct device_node *node)
+{
+ nspire_ahbdiv_setup(node, nspire_clkinfo_classic);
+}
+
+CLK_OF_DECLARE(nspire_ahbdiv_cx, "lsi,nspire-cx-ahb-divider",
+ nspire_ahbdiv_setup_cx);
+CLK_OF_DECLARE(nspire_ahbdiv_classic, "lsi,nspire-classic-ahb-divider",
+ nspire_ahbdiv_setup_classic);
+
+static void __init nspire_clk_setup(struct device_node *node,
+ void (*get_clkinfo)(u32, struct nspire_clk_info *))
+{
+ u32 val;
+ void __iomem *io;
+ struct clk *clk;
+ const char *clk_name = node->name;
+ struct nspire_clk_info info;
+
+ io = of_iomap(node, 0);
+ if (!io)
+ return;
+ val = readl(io);
+ iounmap(io);
+
+ get_clkinfo(val, &info);
+
+ of_property_read_string(node, "clock-output-names", &clk_name);
+
+ clk = clk_register_fixed_rate(NULL, clk_name, NULL, CLK_IS_ROOT,
+ info.base_clock);
+ if (!IS_ERR(clk))
+ of_clk_add_provider(node, of_clk_src_simple_get, clk);
+ else
+ return;
+
+ pr_info("TI-NSPIRE Base: %uMHz CPU: %uMHz AHB: %uMHz\n",
+ info.base_clock / MHZ,
+ info.base_clock / info.base_cpu_ratio / MHZ,
+ info.base_clock / info.base_ahb_ratio / MHZ);
+}
+
+static void __init nspire_clk_setup_cx(struct device_node *node)
+{
+ nspire_clk_setup(node, nspire_clkinfo_cx);
+}
+
+static void __init nspire_clk_setup_classic(struct device_node *node)
+{
+ nspire_clk_setup(node, nspire_clkinfo_classic);
+}
+
+CLK_OF_DECLARE(nspire_clk_cx, "lsi,nspire-cx-clock", nspire_clk_setup_cx);
+CLK_OF_DECLARE(nspire_clk_classic, "lsi,nspire-classic-clock",
+ nspire_clk_setup_classic);
diff --git a/drivers/clk/clk-ppc-corenet.c b/drivers/clk/clk-ppc-corenet.c
new file mode 100644
index 000000000000..e9587073bd32
--- /dev/null
+++ b/drivers/clk/clk-ppc-corenet.c
@@ -0,0 +1,280 @@
+/*
+ * Copyright 2013 Freescale Semiconductor, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * clock driver for Freescale PowerPC corenet SoCs.
+ */
+#include <linux/clk-provider.h>
+#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of_platform.h>
+#include <linux/of.h>
+#include <linux/slab.h>
+
+struct cmux_clk {
+ struct clk_hw hw;
+ void __iomem *reg;
+ u32 flags;
+};
+
+#define PLL_KILL BIT(31)
+#define CLKSEL_SHIFT 27
+#define CLKSEL_ADJUST BIT(0)
+#define to_cmux_clk(p) container_of(p, struct cmux_clk, hw)
+
+static void __iomem *base;
+static unsigned int clocks_per_pll;
+
+static int cmux_set_parent(struct clk_hw *hw, u8 idx)
+{
+ struct cmux_clk *clk = to_cmux_clk(hw);
+ u32 clksel;
+
+ clksel = ((idx / clocks_per_pll) << 2) + idx % clocks_per_pll;
+ if (clk->flags & CLKSEL_ADJUST)
+ clksel += 8;
+ clksel = (clksel & 0xf) << CLKSEL_SHIFT;
+ iowrite32be(clksel, clk->reg);
+
+ return 0;
+}
+
+static u8 cmux_get_parent(struct clk_hw *hw)
+{
+ struct cmux_clk *clk = to_cmux_clk(hw);
+ u32 clksel;
+
+ clksel = ioread32be(clk->reg);
+ clksel = (clksel >> CLKSEL_SHIFT) & 0xf;
+ if (clk->flags & CLKSEL_ADJUST)
+ clksel -= 8;
+ clksel = (clksel >> 2) * clocks_per_pll + clksel % 4;
+
+ return clksel;
+}
+
+const struct clk_ops cmux_ops = {
+ .get_parent = cmux_get_parent,
+ .set_parent = cmux_set_parent,
+};
+
+static void __init core_mux_init(struct device_node *np)
+{
+ struct clk *clk;
+ struct clk_init_data init;
+ struct cmux_clk *cmux_clk;
+ struct device_node *node;
+ int rc, count, i;
+ u32 offset;
+ const char *clk_name;
+ const char **parent_names;
+
+ rc = of_property_read_u32(np, "reg", &offset);
+ if (rc) {
+ pr_err("%s: could not get reg property\n", np->name);
+ return;
+ }
+
+ /* get the input clock source count */
+ count = of_property_count_strings(np, "clock-names");
+ if (count < 0) {
+ pr_err("%s: get clock count error\n", np->name);
+ return;
+ }
+ parent_names = kzalloc((sizeof(char *) * count), GFP_KERNEL);
+ if (!parent_names) {
+ pr_err("%s: could not allocate parent_names\n", __func__);
+ return;
+ }
+
+ for (i = 0; i < count; i++)
+ parent_names[i] = of_clk_get_parent_name(np, i);
+
+ cmux_clk = kzalloc(sizeof(struct cmux_clk), GFP_KERNEL);
+ if (!cmux_clk) {
+ pr_err("%s: could not allocate cmux_clk\n", __func__);
+ goto err_name;
+ }
+ cmux_clk->reg = base + offset;
+
+ node = of_find_compatible_node(NULL, NULL, "fsl,p4080-clockgen");
+ if (node && (offset >= 0x80))
+ cmux_clk->flags = CLKSEL_ADJUST;
+
+ rc = of_property_read_string_index(np, "clock-output-names",
+ 0, &clk_name);
+ if (rc) {
+ pr_err("%s: read clock names error\n", np->name);
+ goto err_clk;
+ }
+
+ init.name = clk_name;
+ init.ops = &cmux_ops;
+ init.parent_names = parent_names;
+ init.num_parents = count;
+ init.flags = 0;
+ cmux_clk->hw.init = &init;
+
+ clk = clk_register(NULL, &cmux_clk->hw);
+ if (IS_ERR(clk)) {
+ pr_err("%s: could not register clock\n", clk_name);
+ goto err_clk;
+ }
+
+ rc = of_clk_add_provider(np, of_clk_src_simple_get, clk);
+ if (rc) {
+ pr_err("Could not register clock provider for node:%s\n",
+ np->name);
+ goto err_clk;
+ }
+ goto err_name;
+
+err_clk:
+ kfree(cmux_clk);
+err_name:
+ /* free *_names because they are reallocated when registered */
+ kfree(parent_names);
+}
+
+static void __init core_pll_init(struct device_node *np)
+{
+ u32 offset, mult;
+ int i, rc, count;
+ const char *clk_name, *parent_name;
+ struct clk_onecell_data *onecell_data;
+ struct clk **subclks;
+
+ rc = of_property_read_u32(np, "reg", &offset);
+ if (rc) {
+ pr_err("%s: could not get reg property\n", np->name);
+ return;
+ }
+
+ /* get the multiple of PLL */
+ mult = ioread32be(base + offset);
+
+ /* check if this PLL is disabled */
+ if (mult & PLL_KILL) {
+ pr_debug("PLL:%s is disabled\n", np->name);
+ return;
+ }
+ mult = (mult >> 1) & 0x3f;
+
+ parent_name = of_clk_get_parent_name(np, 0);
+ if (!parent_name) {
+ pr_err("PLL: %s must have a parent\n", np->name);
+ return;
+ }
+
+ count = of_property_count_strings(np, "clock-output-names");
+ if (count < 0 || count > 4) {
+ pr_err("%s: clock is not supported\n", np->name);
+ return;
+ }
+
+ /* output clock number per PLL */
+ clocks_per_pll = count;
+
+ subclks = kzalloc(sizeof(struct clk *) * count, GFP_KERNEL);
+ if (!subclks) {
+ pr_err("%s: could not allocate subclks\n", __func__);
+ return;
+ }
+
+ onecell_data = kzalloc(sizeof(struct clk_onecell_data), GFP_KERNEL);
+ if (!onecell_data) {
+ pr_err("%s: could not allocate onecell_data\n", __func__);
+ goto err_clks;
+ }
+
+ for (i = 0; i < count; i++) {
+ rc = of_property_read_string_index(np, "clock-output-names",
+ i, &clk_name);
+ if (rc) {
+ pr_err("%s: could not get clock names\n", np->name);
+ goto err_cell;
+ }
+
+ /*
+ * when count == 4, there are 4 output clocks:
+ * /1, /2, /3, /4 respectively
+ * when count < 4, there are at least 2 output clocks:
+ * /1, /2, (/4, if count == 3) respectively.
+ */
+ if (count == 4)
+ subclks[i] = clk_register_fixed_factor(NULL, clk_name,
+ parent_name, 0, mult, 1 + i);
+ else
+
+ subclks[i] = clk_register_fixed_factor(NULL, clk_name,
+ parent_name, 0, mult, 1 << i);
+
+ if (IS_ERR(subclks[i])) {
+ pr_err("%s: could not register clock\n", clk_name);
+ goto err_cell;
+ }
+ }
+
+ onecell_data->clks = subclks;
+ onecell_data->clk_num = count;
+
+ rc = of_clk_add_provider(np, of_clk_src_onecell_get, onecell_data);
+ if (rc) {
+ pr_err("Could not register clk provider for node:%s\n",
+ np->name);
+ goto err_cell;
+ }
+
+ return;
+err_cell:
+ kfree(onecell_data);
+err_clks:
+ kfree(subclks);
+}
+
+static const struct of_device_id clk_match[] __initconst = {
+ { .compatible = "fixed-clock", .data = of_fixed_clk_setup, },
+ { .compatible = "fsl,core-pll-clock", .data = core_pll_init, },
+ { .compatible = "fsl,core-mux-clock", .data = core_mux_init, },
+ {}
+};
+
+static int __init ppc_corenet_clk_probe(struct platform_device *pdev)
+{
+ struct device_node *np;
+
+ np = pdev->dev.of_node;
+ base = of_iomap(np, 0);
+ if (!base) {
+ dev_err(&pdev->dev, "iomap error\n");
+ return -ENOMEM;
+ }
+ of_clk_init(clk_match);
+
+ return 0;
+}
+
+static const struct of_device_id ppc_clk_ids[] __initconst = {
+ { .compatible = "fsl,qoriq-clockgen-1.0", },
+ { .compatible = "fsl,qoriq-clockgen-2.0", },
+ {}
+};
+
+static struct platform_driver ppc_corenet_clk_driver = {
+ .driver = {
+ .name = "ppc_corenet_clock",
+ .owner = THIS_MODULE,
+ .of_match_table = ppc_clk_ids,
+ },
+ .probe = ppc_corenet_clk_probe,
+};
+
+static int __init ppc_corenet_clk_init(void)
+{
+ return platform_driver_register(&ppc_corenet_clk_driver);
+}
+subsys_initcall(ppc_corenet_clk_init);
diff --git a/drivers/clk/clk-si5351.c b/drivers/clk/clk-si5351.c
index 24f553673b72..c50e83744b0a 100644
--- a/drivers/clk/clk-si5351.c
+++ b/drivers/clk/clk-si5351.c
@@ -851,6 +851,41 @@ static int _si5351_clkout_set_drive_strength(
return 0;
}
+static int _si5351_clkout_set_disable_state(
+ struct si5351_driver_data *drvdata, int num,
+ enum si5351_disable_state state)
+{
+ u8 reg = (num < 4) ? SI5351_CLK3_0_DISABLE_STATE :
+ SI5351_CLK7_4_DISABLE_STATE;
+ u8 shift = (num < 4) ? (2 * num) : (2 * (num-4));
+ u8 mask = SI5351_CLK_DISABLE_STATE_MASK << shift;
+ u8 val;
+
+ if (num > 8)
+ return -EINVAL;
+
+ switch (state) {
+ case SI5351_DISABLE_LOW:
+ val = SI5351_CLK_DISABLE_STATE_LOW;
+ break;
+ case SI5351_DISABLE_HIGH:
+ val = SI5351_CLK_DISABLE_STATE_HIGH;
+ break;
+ case SI5351_DISABLE_FLOATING:
+ val = SI5351_CLK_DISABLE_STATE_FLOAT;
+ break;
+ case SI5351_DISABLE_NEVER:
+ val = SI5351_CLK_DISABLE_STATE_NEVER;
+ break;
+ default:
+ return 0;
+ }
+
+ si5351_set_bits(drvdata, reg, mask, val << shift);
+
+ return 0;
+}
+
static int si5351_clkout_prepare(struct clk_hw *hw)
{
struct si5351_hw_data *hwdata =
@@ -1225,6 +1260,33 @@ static int si5351_dt_parse(struct i2c_client *client)
}
}
+ if (!of_property_read_u32(child, "silabs,disable-state",
+ &val)) {
+ switch (val) {
+ case 0:
+ pdata->clkout[num].disable_state =
+ SI5351_DISABLE_LOW;
+ break;
+ case 1:
+ pdata->clkout[num].disable_state =
+ SI5351_DISABLE_HIGH;
+ break;
+ case 2:
+ pdata->clkout[num].disable_state =
+ SI5351_DISABLE_FLOATING;
+ break;
+ case 3:
+ pdata->clkout[num].disable_state =
+ SI5351_DISABLE_NEVER;
+ break;
+ default:
+ dev_err(&client->dev,
+ "invalid disable state %d for clkout %d\n",
+ val, num);
+ return -EINVAL;
+ }
+ }
+
if (!of_property_read_u32(child, "clock-frequency", &val))
pdata->clkout[num].rate = val;
@@ -1281,9 +1343,6 @@ static int si5351_i2c_probe(struct i2c_client *client,
/* Disable interrupts */
si5351_reg_write(drvdata, SI5351_INTERRUPT_MASK, 0xf0);
- /* Set disabled output drivers to drive low */
- si5351_reg_write(drvdata, SI5351_CLK3_0_DISABLE_STATE, 0x00);
- si5351_reg_write(drvdata, SI5351_CLK7_4_DISABLE_STATE, 0x00);
/* Ensure pll select is on XTAL for Si5351A/B */
if (drvdata->variant != SI5351_VARIANT_C)
si5351_set_bits(drvdata, SI5351_PLL_INPUT_SOURCE,
@@ -1327,6 +1386,15 @@ static int si5351_i2c_probe(struct i2c_client *client,
n, pdata->clkout[n].drive);
return ret;
}
+
+ ret = _si5351_clkout_set_disable_state(drvdata, n,
+ pdata->clkout[n].disable_state);
+ if (ret) {
+ dev_err(&client->dev,
+ "failed set disable state of clkout%d to %d\n",
+ n, pdata->clkout[n].disable_state);
+ return ret;
+ }
}
/* register xtal input clock gate */
@@ -1500,7 +1568,10 @@ static int si5351_i2c_probe(struct i2c_client *client,
}
static const struct i2c_device_id si5351_i2c_ids[] = {
- { "silabs,si5351", 0 },
+ { "si5351a", 0 },
+ { "si5351a-msop", 0 },
+ { "si5351b", 0 },
+ { "si5351c", 0 },
{ }
};
MODULE_DEVICE_TABLE(i2c, si5351_i2c_ids);
diff --git a/drivers/clk/clk-si5351.h b/drivers/clk/clk-si5351.h
index af41b5080f43..c0dbf2676872 100644
--- a/drivers/clk/clk-si5351.h
+++ b/drivers/clk/clk-si5351.h
@@ -81,6 +81,7 @@
#define SI5351_CLK3_0_DISABLE_STATE 24
#define SI5351_CLK7_4_DISABLE_STATE 25
+#define SI5351_CLK_DISABLE_STATE_MASK 3
#define SI5351_CLK_DISABLE_STATE_LOW 0
#define SI5351_CLK_DISABLE_STATE_HIGH 1
#define SI5351_CLK_DISABLE_STATE_FLOAT 2
diff --git a/drivers/clk/clk-twl6040.c b/drivers/clk/clk-twl6040.c
index 3af729b1b89d..1ada79a28052 100644
--- a/drivers/clk/clk-twl6040.c
+++ b/drivers/clk/clk-twl6040.c
@@ -95,14 +95,14 @@ static int twl6040_clk_probe(struct platform_device *pdev)
if (IS_ERR(clkdata->clk))
return PTR_ERR(clkdata->clk);
- dev_set_drvdata(&pdev->dev, clkdata);
+ platform_set_drvdata(pdev, clkdata);
return 0;
}
static int twl6040_clk_remove(struct platform_device *pdev)
{
- struct twl6040_clk *clkdata = dev_get_drvdata(&pdev->dev);
+ struct twl6040_clk *clkdata = platform_get_drvdata(pdev);
clk_unregister(clkdata->clk);
diff --git a/drivers/clk/clk-vt8500.c b/drivers/clk/clk-vt8500.c
index 553ac35bcc91..82306f5fb9c2 100644
--- a/drivers/clk/clk-vt8500.c
+++ b/drivers/clk/clk-vt8500.c
@@ -42,6 +42,7 @@ struct clk_device {
#define PLL_TYPE_VT8500 0
#define PLL_TYPE_WM8650 1
#define PLL_TYPE_WM8750 2
+#define PLL_TYPE_WM8850 3
struct clk_pll {
struct clk_hw hw;
@@ -156,10 +157,6 @@ static int vt8500_dclk_set_rate(struct clk_hw *hw, unsigned long rate,
divisor = parent_rate / rate;
- /* If prate / rate would be decimal, incr the divisor */
- if (rate * divisor < parent_rate)
- divisor++;
-
if (divisor == cdev->div_mask + 1)
divisor = 0;
@@ -327,6 +324,15 @@ CLK_OF_DECLARE(vt8500_device, "via,vt8500-device-clock", vtwm_device_clk_init);
#define WM8750_BITS_TO_VAL(f, m, d1, d2) \
((f << 24) | ((m - 1) << 16) | ((d1 - 1) << 8) | d2)
+/* Helper macros for PLL_WM8850 */
+#define WM8850_PLL_MUL(x) ((((x >> 16) & 0x7F) + 1) * 2)
+#define WM8850_PLL_DIV(x) ((((x >> 8) & 1) + 1) * (1 << (x & 3)))
+
+#define WM8850_BITS_TO_FREQ(r, m, d1, d2) \
+ (r * ((m + 1) * 2) / ((d1+1) * (1 << d2)))
+
+#define WM8850_BITS_TO_VAL(m, d1, d2) \
+ ((((m / 2) - 1) << 16) | ((d1 - 1) << 8) | d2)
static void vt8500_find_pll_bits(unsigned long rate, unsigned long parent_rate,
u32 *multiplier, u32 *prediv)
@@ -466,6 +472,49 @@ static void wm8750_find_pll_bits(unsigned long rate, unsigned long parent_rate,
*divisor2 = best_div2;
}
+static void wm8850_find_pll_bits(unsigned long rate, unsigned long parent_rate,
+ u32 *multiplier, u32 *divisor1, u32 *divisor2)
+{
+ u32 mul, div1, div2;
+ u32 best_mul, best_div1, best_div2;
+ unsigned long tclk, rate_err, best_err;
+
+ best_err = (unsigned long)-1;
+
+ /* Find the closest match (lower or equal to requested) */
+ for (div1 = 1; div1 >= 0; div1--)
+ for (div2 = 3; div2 >= 0; div2--)
+ for (mul = 0; mul <= 127; mul++) {
+ tclk = parent_rate * ((mul + 1) * 2) /
+ ((div1 + 1) * (1 << div2));
+ if (tclk > rate)
+ continue;
+ /* error will always be +ve */
+ rate_err = rate - tclk;
+ if (rate_err == 0) {
+ *multiplier = mul;
+ *divisor1 = div1;
+ *divisor2 = div2;
+ return;
+ }
+
+ if (rate_err < best_err) {
+ best_err = rate_err;
+ best_mul = mul;
+ best_div1 = div1;
+ best_div2 = div2;
+ }
+ }
+
+ /* if we got here, it wasn't an exact match */
+ pr_warn("%s: requested rate %lu, found rate %lu\n", __func__, rate,
+ rate - best_err);
+
+ *multiplier = best_mul;
+ *divisor1 = best_div1;
+ *divisor2 = best_div2;
+}
+
static int vtwm_pll_set_rate(struct clk_hw *hw, unsigned long rate,
unsigned long parent_rate)
{
@@ -489,6 +538,10 @@ static int vtwm_pll_set_rate(struct clk_hw *hw, unsigned long rate,
wm8750_find_pll_bits(rate, parent_rate, &filter,