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Subject[PATCH v2 1/2] clk: intel: Add CGU clock driver for a new SoC
Date
From: rtanwar <rahul.tanwar@intel.com>

Clock Generation Unit(CGU) is a new clock controller IP of a forthcoming
Intel network processor SoC. It provides programming interfaces to control
& configure all CPU & peripheral clocks. Add common clock framework based
clock controller driver for CGU.

Signed-off-by: Rahul Tanwar <rahul.tanwar@linux.intel.com>
---
drivers/clk/Kconfig | 8 +
drivers/clk/x86/Makefile | 1 +
drivers/clk/x86/clk-cgu-pll.c | 194 +++++++++++++++
drivers/clk/x86/clk-cgu.c | 559 ++++++++++++++++++++++++++++++++++++++++++
drivers/clk/x86/clk-cgu.h | 296 ++++++++++++++++++++++
drivers/clk/x86/clk-lgm.c | 351 ++++++++++++++++++++++++++
6 files changed, 1409 insertions(+)
create mode 100644 drivers/clk/x86/clk-cgu-pll.c
create mode 100644 drivers/clk/x86/clk-cgu.c
create mode 100644 drivers/clk/x86/clk-cgu.h
create mode 100644 drivers/clk/x86/clk-lgm.c

diff --git a/drivers/clk/Kconfig b/drivers/clk/Kconfig
index 45653a0e6ecd..be5225b31de8 100644
--- a/drivers/clk/Kconfig
+++ b/drivers/clk/Kconfig
@@ -39,6 +39,14 @@ config CLK_HSDK
This driver supports the HSDK core, system, ddr, tunnel and hdmi PLLs
control.

+config CLK_LGM_CGU
+ depends on OF && X86 && HAS_IOMEM
+ select OF_EARLY_FLATTREE
+ bool "Clock driver for Lightning Mountain(LGM) platform"
+ help
+ Clock Generation Unit(CGU) driver for Intel Lightning Mountain(LGM)
+ network processor SoC.
+
config COMMON_CLK_MAX77686
tristate "Clock driver for Maxim 77620/77686/77802 MFD"
depends on MFD_MAX77686 || MFD_MAX77620 || COMPILE_TEST
diff --git a/drivers/clk/x86/Makefile b/drivers/clk/x86/Makefile
index e3ec81e2a1c2..7c774ea7ddeb 100644
--- a/drivers/clk/x86/Makefile
+++ b/drivers/clk/x86/Makefile
@@ -3,3 +3,4 @@ obj-$(CONFIG_PMC_ATOM) += clk-pmc-atom.o
obj-$(CONFIG_X86_AMD_PLATFORM_DEVICE) += clk-st.o
clk-x86-lpss-objs := clk-lpt.o
obj-$(CONFIG_X86_INTEL_LPSS) += clk-x86-lpss.o
+obj-$(CONFIG_CLK_LGM_CGU) += clk-cgu.o clk-cgu-pll.o clk-lgm.o
diff --git a/drivers/clk/x86/clk-cgu-pll.c b/drivers/clk/x86/clk-cgu-pll.c
new file mode 100644
index 000000000000..5c6c91436730
--- /dev/null
+++ b/drivers/clk/x86/clk-cgu-pll.c
@@ -0,0 +1,194 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2019 Intel Corporation.
+ * Zhu YiXin <yixin.zhu@intel.com>
+ * Rahul Tanwar <rahul.tanwar@intel.com>
+ */
+
+#include <linux/clk.h>
+#include <linux/clk-provider.h>
+#include <linux/clkdev.h>
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/slab.h>
+
+#include "clk-cgu.h"
+
+#define to_lgm_clk_pll(_hw) container_of(_hw, struct lgm_clk_pll, hw)
+
+/*
+ * Calculate formula:
+ * rate = (prate * mult + (prate * frac) / frac_div) / div
+ */
+static unsigned long
+lgm_pll_calc_rate(unsigned long prate, unsigned int mult,
+ unsigned int div, unsigned int frac, unsigned int frac_div)
+{
+ u64 crate, frate, rate64;
+
+ rate64 = prate;
+ crate = rate64 * mult;
+ frate = rate64 * frac;
+ do_div(frate, frac_div);
+ crate += frate;
+ do_div(crate, div);
+
+ return (unsigned long)crate;
+}
+
+static int lgm_pll_wait_for_lock(struct lgm_clk_pll *pll)
+{
+ int max_loop_cnt = 100;
+ unsigned long flags;
+ unsigned int val;
+
+ while (max_loop_cnt > 0) {
+ raw_spin_lock_irqsave(&pll->lock, flags);
+ val = lgm_get_clk_val(pll->membase, pll->reg, 0, 1);
+ raw_spin_unlock_irqrestore(&pll->lock, flags);
+
+ if (val)
+ return 0;
+
+ udelay(1);
+ max_loop_cnt--;
+ }
+
+ return -EIO;
+}
+
+static void
+lgm_pll_get_params(struct lgm_clk_pll *pll, unsigned int *mult,
+ unsigned int *div, unsigned int *frac)
+{
+ unsigned long flags;
+
+ raw_spin_lock_irqsave(&pll->lock, flags);
+ *mult = lgm_get_clk_val(pll->membase, pll->reg + 0x8, 0, 12);
+ *div = lgm_get_clk_val(pll->membase, pll->reg + 0x8, 18, 6);
+ *frac = lgm_get_clk_val(pll->membase, pll->reg, 2, 24);
+ raw_spin_unlock_irqrestore(&pll->lock, flags);
+}
+
+static unsigned long lgm_pll_recalc_rate(struct clk_hw *hw, unsigned long prate)
+{
+ struct lgm_clk_pll *pll = to_lgm_clk_pll(hw);
+ unsigned int div, mult, frac;
+
+ lgm_pll_get_params(pll, &mult, &div, &frac);
+ if (pll->type == TYPE_LJPLL)
+ div *= 4;
+
+ return lgm_pll_calc_rate(prate, mult, div, frac, BIT(24));
+}
+
+static int lgm_pll_is_enabled(struct clk_hw *hw)
+{
+ struct lgm_clk_pll *pll = to_lgm_clk_pll(hw);
+ unsigned long flags;
+ unsigned int ret;
+
+ raw_spin_lock_irqsave(&pll->lock, flags);
+ ret = lgm_get_clk_val(pll->membase, pll->reg, 0, 1);
+ raw_spin_unlock_irqrestore(&pll->lock, flags);
+
+ return ret;
+}
+
+static int lgm_pll_enable(struct clk_hw *hw)
+{
+ struct lgm_clk_pll *pll = to_lgm_clk_pll(hw);
+ unsigned long flags;
+
+ raw_spin_lock_irqsave(&pll->lock, flags);
+ lgm_set_clk_val(pll->membase, pll->reg, 0, 1, 1);
+ raw_spin_unlock_irqrestore(&pll->lock, flags);
+
+ return lgm_pll_wait_for_lock(pll);
+}
+
+static void lgm_pll_disable(struct clk_hw *hw)
+{
+ struct lgm_clk_pll *pll = to_lgm_clk_pll(hw);
+ unsigned long flags;
+
+ raw_spin_lock_irqsave(&pll->lock, flags);
+ lgm_set_clk_val(pll->membase, pll->reg, 0, 1, 0);
+ raw_spin_unlock_irqrestore(&pll->lock, flags);
+}
+
+static long
+lgm_pll_round_rate(struct clk_hw *hw, unsigned long rate, unsigned long *prate)
+{
+ return lgm_pll_recalc_rate(hw, *prate);
+}
+
+const static struct clk_ops lgm_pll_ops = {
+ .recalc_rate = lgm_pll_recalc_rate,
+ .is_enabled = lgm_pll_is_enabled,
+ .enable = lgm_pll_enable,
+ .disable = lgm_pll_disable,
+ .round_rate = lgm_pll_round_rate,
+};
+
+static struct clk_hw *
+lgm_clk_register_pll(struct lgm_clk_provider *ctx,
+ const struct lgm_pll_clk_data *list)
+{
+ struct clk_init_data *init;
+ struct lgm_clk_pll *pll;
+ struct device *dev = ctx->dev;
+ struct clk_hw *hw;
+ int ret;
+
+ init = devm_kzalloc(dev, sizeof(*init), GFP_KERNEL);
+ if (!init)
+ return ERR_PTR(-ENOMEM);
+
+ init->ops = &lgm_pll_ops;
+ init->name = list->name;
+ init->parent_names = list->parent_names;
+ init->num_parents = list->num_parents;
+
+ pll = devm_kzalloc(dev, sizeof(*pll), GFP_KERNEL);
+ if (!pll)
+ return ERR_PTR(-ENOMEM);
+
+ pll->membase = ctx->membase;
+ pll->lock = ctx->lock;
+ pll->dev = ctx->dev;
+ pll->reg = list->reg;
+ pll->flags = list->flags;
+ pll->type = list->type;
+ pll->hw.init = init;
+
+ hw = &pll->hw;
+ ret = clk_hw_register(dev, hw);
+ if (ret)
+ return ERR_PTR(ret);
+
+ return hw;
+}
+
+int lgm_clk_register_plls(struct lgm_clk_provider *ctx,
+ const struct lgm_pll_clk_data *list,
+ unsigned int nr_clk)
+{
+ struct clk_hw *hw;
+ int i;
+
+ for (i = 0; i < nr_clk; i++, list++) {
+ hw = lgm_clk_register_pll(ctx, list);
+ if (IS_ERR(hw)) {
+ dev_err(ctx->dev, "failed to register pll: %s\n",
+ list->name);
+ return -EIO;
+ }
+
+ lgm_clk_add_lookup(ctx, hw, list->id);
+ }
+
+ return 0;
+}
diff --git a/drivers/clk/x86/clk-cgu.c b/drivers/clk/x86/clk-cgu.c
new file mode 100644
index 000000000000..fbbea971e3b1
--- /dev/null
+++ b/drivers/clk/x86/clk-cgu.c
@@ -0,0 +1,559 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2019 Intel Corporation.
+ * Zhu YiXin <yixin.zhu@intel.com>
+ * Rahul Tanwar <rahul.tanwar@intel.com>
+ */
+#include <linux/clk.h>
+#include <linux/clk-provider.h>
+#include <linux/clkdev.h>
+#include <linux/device.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/slab.h>
+
+#include "clk-cgu.h"
+
+#define GATE_HW_REG_STAT(reg) ((reg) + 0x0)
+#define GATE_HW_REG_EN(reg) ((reg) + 0x4)
+#define GATE_HW_REG_DIS(reg) ((reg) + 0x8)
+
+#define to_lgm_clk_mux(_hw) container_of(_hw, struct lgm_clk_mux, hw)
+#define to_lgm_clk_divider(_hw) container_of(_hw, struct lgm_clk_divider, hw)
+#define to_lgm_clk_gate(_hw) container_of(_hw, struct lgm_clk_gate, hw)
+#define to_lgm_clk_ddiv(_hw) container_of(_hw, struct lgm_clk_ddiv, hw)
+
+void lgm_set_clk_val(void *membase, u32 reg,
+ u8 shift, u8 width, u32 set_val)
+{
+ u32 mask = (GENMASK(width - 1, 0) << shift);
+ u32 regval;
+
+ regval = readl(membase + reg);
+ regval = (regval & ~mask) | ((set_val << shift) & mask);
+ writel(regval, membase + reg);
+}
+
+u32 lgm_get_clk_val(void *membase, u32 reg, u8 shift, u8 width)
+{
+ u32 val;
+
+ val = readl(membase + reg);
+ val = (val >> shift) & (BIT(width) - 1);
+
+ return val;
+}
+
+void lgm_clk_add_lookup(struct lgm_clk_provider *ctx,
+ struct clk_hw *hw, unsigned int id)
+{
+ if (ctx->clk_data.hws)
+ ctx->clk_data.hws[id] = hw;
+}
+
+static struct clk_hw *lgm_clk_register_fixed(struct lgm_clk_provider *ctx,
+ const struct lgm_clk_branch *list)
+{
+ unsigned long flags;
+
+ if (list->div_flags & CLOCK_FLAG_VAL_INIT) {
+ raw_spin_lock_irqsave(&ctx->lock, flags);
+ lgm_set_clk_val(ctx->membase, list->div_off, list->div_shift,
+ list->div_width, list->div_val);
+ raw_spin_unlock_irqrestore(&ctx->lock, flags);
+ }
+
+ return clk_hw_register_fixed_rate(NULL, list->name,
+ list->parent_names[0],
+ list->flags, list->mux_flags);
+}
+
+static u8 lgm_clk_mux_get_parent(struct clk_hw *hw)
+{
+ struct lgm_clk_mux *mux = to_lgm_clk_mux(hw);
+ unsigned long flags;
+ u32 val;
+
+ raw_spin_lock_irqsave(&mux->lock, flags);
+ val = lgm_get_clk_val(mux->membase, mux->reg, mux->shift, mux->width);
+ raw_spin_unlock_irqrestore(&mux->lock, flags);
+ return clk_mux_val_to_index(hw, NULL, mux->flags, val);
+}
+
+static int lgm_clk_mux_set_parent(struct clk_hw *hw, u8 index)
+{
+ struct lgm_clk_mux *mux = to_lgm_clk_mux(hw);
+ unsigned long flags;
+ u32 val;
+
+ val = clk_mux_index_to_val(NULL, mux->flags, index);
+ raw_spin_lock_irqsave(&mux->lock, flags);
+ lgm_set_clk_val(mux->membase, mux->reg, mux->shift, mux->width, val);
+ raw_spin_unlock_irqrestore(&mux->lock, flags);
+
+ return 0;
+}
+
+static int lgm_clk_mux_determine_rate(struct clk_hw *hw,
+ struct clk_rate_request *req)
+{
+ struct lgm_clk_mux *mux = to_lgm_clk_mux(hw);
+
+ return clk_mux_determine_rate_flags(hw, req, mux->flags);
+}
+
+const static struct clk_ops lgm_clk_mux_ops = {
+ .get_parent = lgm_clk_mux_get_parent,
+ .set_parent = lgm_clk_mux_set_parent,
+ .determine_rate = lgm_clk_mux_determine_rate,
+};
+
+static struct clk_hw *
+lgm_clk_register_mux(struct lgm_clk_provider *ctx,
+ const struct lgm_clk_branch *list)
+{
+ unsigned long flags, cflags = list->mux_flags;
+ struct device *dev = ctx->dev;
+ u8 shift = list->mux_shift;
+ u8 width = list->mux_width;
+ struct clk_init_data *init;
+ struct lgm_clk_mux *mux;
+ u32 reg = list->mux_off;
+ struct clk_hw *hw;
+ int ret;
+
+ init = devm_kzalloc(dev, sizeof(*init), GFP_KERNEL);
+ if (!init)
+ return ERR_PTR(-ENOMEM);
+
+ mux = devm_kzalloc(dev, sizeof(*mux), GFP_KERNEL);
+ if (!mux)
+ return ERR_PTR(-ENOMEM);
+
+ init->name = list->name;
+ init->ops = &lgm_clk_mux_ops;
+ init->flags = list->flags;
+ init->parent_names = list->parent_names;
+ init->num_parents = list->num_parents;
+
+ mux->membase = ctx->membase;
+ mux->lock = ctx->lock;
+ mux->reg = reg;
+ mux->shift = shift;
+ mux->width = width;
+ mux->flags = cflags;
+ mux->dev = dev;
+ mux->hw.init = init;
+
+ hw = &mux->hw;
+ ret = clk_hw_register(dev, hw);
+ if (ret)
+ return ERR_PTR(ret);
+
+ if (cflags & CLOCK_FLAG_VAL_INIT) {
+ raw_spin_lock_irqsave(&mux->lock, flags);
+ lgm_set_clk_val(mux->membase, reg, shift, width, list->mux_val);
+ raw_spin_unlock_irqrestore(&mux->lock, flags);
+ }
+
+ return hw;
+}
+
+static unsigned long
+lgm_clk_divider_recalc_rate(struct clk_hw *hw, unsigned long parent_rate)
+{
+ struct lgm_clk_divider *divider = to_lgm_clk_divider(hw);
+ unsigned long flags;
+ unsigned int val;
+
+ raw_spin_lock_irqsave(&divider->lock, flags);
+ val = lgm_get_clk_val(divider->membase, divider->reg,
+ divider->shift, divider->width);
+ raw_spin_unlock_irqrestore(&divider->lock, flags);
+
+ return divider_recalc_rate(hw, parent_rate, val, divider->table,
+ divider->flags, divider->width);
+}
+
+static long
+lgm_clk_divider_round_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long *prate)
+{
+ struct lgm_clk_divider *divider = to_lgm_clk_divider(hw);
+
+ return divider_round_rate(hw, rate, prate, divider->table,
+ divider->width, divider->flags);
+}
+
+static int
+lgm_clk_divider_set_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long prate)
+{
+ struct lgm_clk_divider *divider = to_lgm_clk_divider(hw);
+ unsigned long flags;
+ int value;
+
+ value = divider_get_val(rate, prate, divider->table,
+ divider->width, divider->flags);
+ if (value < 0)
+ return value;
+
+ raw_spin_lock_irqsave(&divider->lock, flags);
+ lgm_set_clk_val(divider->membase, divider->reg,
+ divider->shift, divider->width, value);
+ raw_spin_unlock_irqrestore(&divider->lock, flags);
+
+ return 0;
+}
+
+const static struct clk_ops lgm_clk_divider_ops = {
+ .recalc_rate = lgm_clk_divider_recalc_rate,
+ .round_rate = lgm_clk_divider_round_rate,
+ .set_rate = lgm_clk_divider_set_rate,
+};
+
+static struct clk_hw *
+lgm_clk_register_divider(struct lgm_clk_provider *ctx,
+ const struct lgm_clk_branch *list)
+{
+ unsigned long flags, cflags = list->div_flags;
+ struct device *dev = ctx->dev;
+ struct lgm_clk_divider *div;
+ struct clk_init_data *init;
+ u8 shift = list->div_shift;
+ u8 width = list->div_width;
+ u32 reg = list->div_off;
+ struct clk_hw *hw;
+ int ret;
+
+ init = devm_kzalloc(dev, sizeof(*init), GFP_KERNEL);
+ if (!init)
+ return ERR_PTR(-ENOMEM);
+
+ div = devm_kzalloc(dev, sizeof(*div), GFP_KERNEL);
+ if (!div)
+ return ERR_PTR(-ENOMEM);
+
+ init->name = list->name;
+ init->ops = &lgm_clk_divider_ops;
+ init->flags = list->flags;
+ init->parent_names = &list->parent_names[0];
+ init->num_parents = 1;
+
+ div->membase = ctx->membase;
+ div->lock = ctx->lock;
+ div->reg = reg;
+ div->shift = shift;
+ div->width = width;
+ div->flags = cflags;
+ div->table = list->div_table;
+ div->dev = dev;
+ div->hw.init = init;
+
+ hw = &div->hw;
+ ret = clk_hw_register(dev, hw);
+ if (ret)
+ return ERR_PTR(ret);
+
+ if (cflags & CLOCK_FLAG_VAL_INIT) {
+ raw_spin_lock_irqsave(&div->lock, flags);
+ lgm_set_clk_val(div->membase, reg, shift, width, list->div_val);
+ raw_spin_unlock_irqrestore(&div->lock, flags);
+ }
+
+ return hw;
+}
+
+static struct clk_hw *
+lgm_clk_register_fixed_factor(struct lgm_clk_provider *ctx,
+ const struct lgm_clk_branch *list)
+{
+ unsigned long flags;
+ struct clk_hw *hw;
+
+ hw = clk_hw_register_fixed_factor(ctx->dev, list->name,
+ list->parent_names[0], list->flags,
+ list->mult, list->div);
+ if (IS_ERR(hw))
+ return ERR_CAST(hw);
+
+ if (list->div_flags & CLOCK_FLAG_VAL_INIT) {
+ raw_spin_lock_irqsave(&ctx->lock, flags);
+ lgm_set_clk_val(ctx->membase, list->div_off, list->div_shift,
+ list->div_width, list->div_val);
+ raw_spin_unlock_irqrestore(&ctx->lock, flags);
+ }
+
+ return hw;
+}
+
+static int lgm_clk_gate_enable(struct clk_hw *hw)
+{
+ struct lgm_clk_gate *gate = to_lgm_clk_gate(hw);
+ unsigned long flags;
+ unsigned int reg;
+
+ if (gate->flags & GATE_CLK_HW)
+ reg = GATE_HW_REG_EN(gate->reg);
+ else if (gate->flags & GATE_CLK_SW)
+ reg = gate->reg;
+ else {
+ dev_err(gate->dev, "%s has unsupported flags 0x%lx\n",
+ clk_hw_get_name(hw), gate->flags);
+ return 0;
+ }
+
+ raw_spin_lock_irqsave(&gate->lock, flags);
+ lgm_set_clk_val(gate->membase, reg, gate->shift, 1, 1);
+ raw_spin_unlock_irqrestore(&gate->lock, flags);
+
+ return 0;
+}
+
+static void lgm_clk_gate_disable(struct clk_hw *hw)
+{
+ struct lgm_clk_gate *gate = to_lgm_clk_gate(hw);
+ unsigned long flags;
+ unsigned int reg;
+ unsigned int set;
+
+ if (gate->flags & GATE_CLK_HW) {
+ reg = GATE_HW_REG_DIS(gate->reg);
+ set = 1;
+ } else if (gate->flags & GATE_CLK_SW) {
+ reg = gate->reg;
+ set = 0;
+ } else {
+ dev_err(gate->dev, "%s has unsupported flags 0x%lx!\n",
+ clk_hw_get_name(hw), gate->flags);
+ return;
+ }
+
+ raw_spin_lock_irqsave(&gate->lock, flags);
+ lgm_set_clk_val(gate->membase, reg, gate->shift, 1, set);
+ raw_spin_unlock_irqrestore(&gate->lock, flags);
+}
+
+static int lgm_clk_gate_is_enabled(struct clk_hw *hw)
+{
+ struct lgm_clk_gate *gate = to_lgm_clk_gate(hw);
+ unsigned int reg, ret;
+ unsigned long flags;
+
+ if (gate->flags & GATE_CLK_HW)
+ reg = GATE_HW_REG_STAT(gate->reg);
+ else if (gate->flags & GATE_CLK_SW)
+ reg = gate->reg;
+ else {
+ dev_err(gate->dev, "%s has unsupported flags 0x%lx\n",
+ clk_hw_get_name(hw), gate->flags);
+ return 0;
+ }
+
+ raw_spin_lock_irqsave(&gate->lock, flags);
+ ret = lgm_get_clk_val(gate->membase, reg, gate->shift, 1);
+ raw_spin_unlock_irqrestore(&gate->lock, flags);
+
+ return ret;
+}
+
+const static struct clk_ops lgm_clk_gate_ops = {
+ .enable = lgm_clk_gate_enable,
+ .disable = lgm_clk_gate_disable,
+ .is_enabled = lgm_clk_gate_is_enabled,
+};
+
+static struct clk_hw *
+lgm_clk_register_gate(struct lgm_clk_provider *ctx,
+ const struct lgm_clk_branch *list)
+{
+ unsigned long flags, cflags = list->gate_flags;
+ const char *pname = list->parent_names[0];
+ struct device *dev = ctx->dev;
+ u8 shift = list->gate_shift;
+ struct clk_init_data *init;
+ struct lgm_clk_gate *gate;
+ u32 reg = list->gate_off;
+ struct clk_hw *hw;
+ int ret;
+
+ init = devm_kzalloc(dev, sizeof(*init), GFP_KERNEL);
+ if (!init)
+ return ERR_PTR(-ENOMEM);
+
+ gate = devm_kzalloc(dev, sizeof(*gate), GFP_KERNEL);
+ if (!gate)
+ return ERR_PTR(-ENOMEM);
+
+ init->name = list->name;
+ init->ops = &lgm_clk_gate_ops;
+ init->flags = list->flags;
+ init->parent_names = pname ? &pname : NULL;
+ init->num_parents = pname ? 1 : 0;
+
+ gate->membase = ctx->membase;
+ gate->lock = ctx->lock;
+ gate->reg = reg;
+ gate->shift = shift;
+ gate->flags = cflags;
+ gate->dev = dev;
+ gate->hw.init = init;
+
+ hw = &gate->hw;
+ ret = clk_hw_register(dev, hw);
+ if (ret)
+ return ERR_PTR(ret);
+
+ if (cflags & CLOCK_FLAG_VAL_INIT) {
+ raw_spin_lock_irqsave(&gate->lock, flags);
+ lgm_set_clk_val(gate->membase, reg, shift, 1, list->gate_val);
+ raw_spin_unlock_irqrestore(&gate->lock, flags);
+ }
+
+ return hw;
+}
+
+int lgm_clk_register_branches(struct lgm_clk_provider *ctx,
+ const struct lgm_clk_branch *list,
+ unsigned int nr_clk)
+{
+ struct clk_hw *hw;
+ unsigned int idx;
+
+ for (idx = 0; idx < nr_clk; idx++, list++) {
+ switch (list->type) {
+ case CLK_TYPE_FIXED:
+ hw = lgm_clk_register_fixed(ctx, list);
+ break;
+ case CLK_TYPE_MUX:
+ hw = lgm_clk_register_mux(ctx, list);
+ break;
+ case CLK_TYPE_DIVIDER:
+ hw = lgm_clk_register_divider(ctx, list);
+ break;
+ case CLK_TYPE_FIXED_FACTOR:
+ hw = lgm_clk_register_fixed_factor(ctx, list);
+ break;
+ case CLK_TYPE_GATE:
+ hw = lgm_clk_register_gate(ctx, list);
+ break;
+ default:
+ dev_err(ctx->dev, "invalid clk type\n");
+ return -EINVAL;
+ }
+
+ if (IS_ERR(hw)) {
+ dev_err(ctx->dev,
+ "register clk: %s, type: %u failed!\n",
+ list->name, list->type);
+ return -EIO;
+ }
+ lgm_clk_add_lookup(ctx, hw, list->id);
+ }
+
+ return 0;
+}
+
+static unsigned long
+lgm_clk_ddiv_recalc_rate(struct clk_hw *hw, unsigned long parent_rate)
+{
+ struct lgm_clk_ddiv *ddiv = to_lgm_clk_ddiv(hw);
+ unsigned int div0, div1, exdiv;
+ unsigned long flags;
+ u64 prate;
+
+ raw_spin_lock_irqsave(&ddiv->lock, flags);
+ div0 = lgm_get_clk_val(ddiv->membase, ddiv->reg,
+ ddiv->shift0, ddiv->width0) + 1;
+ div1 = lgm_get_clk_val(ddiv->membase, ddiv->reg,
+ ddiv->shift1, ddiv->width1) + 1;
+ exdiv = lgm_get_clk_val(ddiv->membase, ddiv->reg,
+ ddiv->shift2, ddiv->width2);
+ raw_spin_unlock_irqrestore(&ddiv->lock, flags);
+
+ prate = (u64)parent_rate;
+ do_div(prate, div0);
+ do_div(prate, div1);
+
+ if (exdiv) {
+ do_div(prate, ddiv->div);
+ prate *= ddiv->mult;
+ }
+
+ return (unsigned long)prate;
+}
+
+const static struct clk_ops lgm_clk_ddiv_ops = {
+ .recalc_rate = lgm_clk_ddiv_recalc_rate,
+};
+
+int lgm_clk_register_ddiv(struct lgm_clk_provider *ctx,
+ const struct lgm_clk_ddiv_data *list,
+ unsigned int nr_clk)
+{
+ struct device *dev = ctx->dev;
+ struct clk_init_data *init;
+ struct lgm_clk_ddiv *ddiv;
+ struct clk_hw *hw;
+ unsigned int idx;
+ int ret;
+
+ for (idx = 0; idx < nr_clk; idx++, list++) {
+ init = NULL;
+ init = devm_kzalloc(dev, sizeof(*init), GFP_KERNEL);
+ if (!init)
+ return -ENOMEM;
+
+ ddiv = NULL;
+ ddiv = devm_kzalloc(dev, sizeof(*ddiv), GFP_KERNEL);
+ if (!ddiv)
+ return -ENOMEM;
+
+ init->name = list->name;
+ init->ops = &lgm_clk_ddiv_ops;
+ init->flags = list->flags;
+ init->parent_names = list->parent_name;
+ init->num_parents = 1;
+
+ ddiv->membase = ctx->membase;
+ ddiv->lock = ctx->lock;
+ ddiv->reg = list->reg;
+ ddiv->shift0 = list->shift0;
+ ddiv->width0 = list->width0;
+ ddiv->shift1 = list->shift1;
+ ddiv->width1 = list->width1;
+ ddiv->shift2 = list->ex_shift;
+ ddiv->width2 = list->ex_width;
+ ddiv->flags = list->div_flags;
+ ddiv->mult = 2;
+ ddiv->div = 5;
+ ddiv->dev = dev;
+ ddiv->hw.init = init;
+
+ hw = &ddiv->hw;
+ ret = clk_hw_register(dev, hw);
+ if (ret) {
+ dev_err(dev, "register clk: %s failed!\n", list->name);
+ return -EIO;
+ }
+
+ lgm_clk_add_lookup(ctx, hw, list->id);
+ }
+
+ return 0;
+}
+
+struct lgm_clk_provider *__init
+lgm_clk_init(struct device *dev, unsigned int nr_clks)
+{
+ struct lgm_clk_provider *ctx;
+
+ ctx = devm_kzalloc(dev, struct_size(ctx, clk_data.hws, nr_clks),
+ GFP_KERNEL);
+ if (!ctx)
+ return ERR_PTR(-ENOMEM);
+
+ ctx->clk_data.num = nr_clks;
+
+ return ctx;
+}
diff --git a/drivers/clk/x86/clk-cgu.h b/drivers/clk/x86/clk-cgu.h
new file mode 100644
index 000000000000..3a0e7c2d63c4
--- /dev/null
+++ b/drivers/clk/x86/clk-cgu.h
@@ -0,0 +1,296 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright(c) 2019 Intel Corporation.
+ * Zhu YiXin <yixin.zhu@intel.com>
+ * Rahul Tanwar <rahul.tanwar@intel.com>
+ */
+
+#ifndef __CLK_CGU_H
+#define __CLK_CGU_H
+
+struct lgm_clk_mux {
+ struct clk_hw hw;
+ struct device *dev;
+ void __iomem *membase;
+ unsigned int reg;
+ u8 shift;
+ u8 width;
+ unsigned long flags;
+ raw_spinlock_t lock;
+};
+
+struct lgm_clk_divider {
+ struct clk_hw hw;
+ struct device *dev;
+ void __iomem *membase;
+ unsigned int reg;
+ u8 shift;
+ u8 width;
+ unsigned long flags;
+ const struct clk_div_table *table;
+ raw_spinlock_t lock;
+};
+
+struct lgm_clk_ddiv {
+ struct clk_hw hw;
+ struct device *dev;
+ void __iomem *membase;
+ unsigned int reg;
+ u8 shift0;
+ u8 width0;
+ u8 shift1;
+ u8 width1;
+ u8 shift2;
+ u8 width2;
+ unsigned int mult;
+ unsigned int div;
+ unsigned long flags;
+ raw_spinlock_t lock;
+};
+
+struct lgm_clk_gate {
+ struct clk_hw hw;
+ struct device *dev;
+ void __iomem *membase;
+ unsigned int reg;
+ u8 shift;
+ unsigned long flags;
+ raw_spinlock_t lock;
+};
+
+enum lgm_clk_type {
+ CLK_TYPE_FIXED,
+ CLK_TYPE_MUX,
+ CLK_TYPE_DIVIDER,
+ CLK_TYPE_FIXED_FACTOR,
+ CLK_TYPE_GATE,
+ CLK_TYPE_NONE,
+};
+
+/**
+ * struct lgm_clk_provider
+ * @membase: IO mem base address for CGU.
+ * @np: device node
+ * @dev: device
+ * @clk_data: array of hw clocks and clk number.
+ */
+struct lgm_clk_provider {
+ void __iomem *membase;
+ struct device_node *np;
+ struct device *dev;
+ struct clk_hw_onecell_data clk_data;
+ raw_spinlock_t lock;
+};
+
+enum pll_type {
+ TYPE_ROPLL,
+ TYPE_LJPLL,
+ TYPE_NONE,
+};
+
+struct lgm_clk_pll {
+ struct clk_hw hw;
+ struct device *dev;
+ void __iomem *membase;
+ unsigned int reg;
+ unsigned long flags;
+ enum pll_type type;
+ raw_spinlock_t lock;
+};
+
+/**
+ * struct lgm_pll_clk_data
+ * @id: platform specific id of the clock.
+ * @name: name of this pll clock.
+ * @parent_names: name of the parent clock.
+ * @num_parents: number of parents.
+ * @flags: optional flags for basic clock.
+ * @type: platform type of pll.
+ * @reg: offset of the register.
+ */
+struct lgm_pll_clk_data {
+ unsigned int id;
+ const char *name;
+ const char *const *parent_names;
+ u8 num_parents;
+ unsigned long flags;
+ enum pll_type type;
+ int reg;
+};
+
+#define LGM_PLL(_id, _name, _pnames, _flags, \
+ _reg, _type) \
+ { \
+ .id = _id, \
+ .name = _name, \
+ .parent_names = _pnames, \
+ .num_parents = ARRAY_SIZE(_pnames), \
+ .flags = _flags, \
+ .reg = _reg, \
+ .type = _type, \
+ }
+
+struct lgm_clk_ddiv_data {
+ unsigned int id;
+ const char *name;
+ const char *const *parent_name;
+ u8 flags;
+ unsigned long div_flags;
+ unsigned int reg;
+ u8 shift0;
+ u8 width0;
+ u8 shift1;
+ u8 width1;
+ u8 ex_shift;
+ u8 ex_width;
+};
+
+#define LGM_DDIV(_id, _name, _pname, _flags, _reg, \
+ _shft0, _wdth0, _shft1, _wdth1, \
+ _xshft, _df) \
+ { \
+ .id = _id, \
+ .name = _name, \
+ .parent_name = (const char *[]) { _pname }, \
+ .flags = _flags, \
+ .reg = _reg, \
+ .shift0 = _shft0, \
+ .width0 = _wdth0, \
+ .shift1 = _shft1, \
+ .width1 = _wdth1, \
+ .ex_shift = _xshft, \
+ .ex_width = 1, \
+ .div_flags = _df, \
+ }
+
+struct lgm_clk_branch {
+ unsigned int id;
+ enum lgm_clk_type type;
+ const char *name;
+ const char *const *parent_names;
+ u8 num_parents;
+ unsigned long flags;
+ unsigned int mux_off;
+ u8 mux_shift;
+ u8 mux_width;
+ unsigned long mux_flags;
+ unsigned int mux_val;
+ unsigned int div_off;
+ u8 div_shift;
+ u8 div_width;
+ unsigned long div_flags;
+ unsigned int div_val;
+ const struct clk_div_table *div_table;
+ unsigned int gate_off;
+ u8 gate_shift;
+ unsigned long gate_flags;
+ unsigned int gate_val;
+ unsigned int mult;
+ unsigned int div;
+};
+
+/* clock flags definition */
+#define CLOCK_FLAG_VAL_INIT BIT(16)
+#define GATE_CLK_HW BIT(17)
+#define GATE_CLK_SW BIT(18)
+
+#define LGM_MUX(_id, _name, _pname, _f, _reg, \
+ _shift, _width, _cf, _v) \
+ { \
+ .id = _id, \
+ .type = CLK_TYPE_MUX, \
+ .name = _name, \
+ .parent_names = _pname, \
+ .num_parents = ARRAY_SIZE(_pname), \
+ .flags = _f, \
+ .mux_off = _reg, \
+ .mux_shift = _shift, \
+ .mux_width = _width, \
+ .mux_flags = _cf, \
+ .mux_val = _v, \
+ }
+
+#define LGM_DIV(_id, _name, _pname, _f, _reg, \
+ _shift, _width, _cf, _v, _dtable) \
+ { \
+ .id = _id, \
+ .type = CLK_TYPE_DIVIDER, \
+ .name = _name, \
+ .parent_names = (const char *[]) { _pname }, \
+ .num_parents = 1, \
+ .flags = _f, \
+ .div_off = _reg, \
+ .div_shift = _shift, \
+ .div_width = _width, \
+ .div_flags = _cf, \
+ .div_val = _v, \
+ .div_table = _dtable, \
+ }
+
+#define LGM_GATE(_id, _name, _pname, _f, _reg, \
+ _shift, _cf, _v) \
+ { \
+ .id = _id, \
+ .type = CLK_TYPE_GATE, \
+ .name = _name, \
+ .parent_names = (const char *[]) { _pname }, \
+ .num_parents = !_pname ? 0 : 1, \
+ .flags = _f, \
+ .gate_off = _reg, \
+ .gate_shift = _shift, \
+ .gate_flags = _cf, \
+ .gate_val = _v, \
+ }
+
+#define LGM_FIXED(_id, _name, _pname, _f, _reg, \
+ _shift, _width, _cf, _freq, _v) \
+ { \
+ .id = _id, \
+ .type = CLK_TYPE_FIXED, \
+ .name = _name, \
+ .parent_names = (const char *[]) { _pname }, \
+ .num_parents = !_pname ? 0 : 1, \
+ .flags = _f, \
+ .div_off = _reg, \
+ .div_shift = _shift, \
+ .div_width = _width, \
+ .div_flags = _cf, \
+ .div_val = _v, \
+ .mux_flags = _freq, \
+ }
+
+#define LGM_FIXED_FACTOR(_id, _name, _pname, _f, _reg, \
+ _shift, _width, _cf, _v, _m, _d) \
+ { \
+ .id = _id, \
+ .type = CLK_TYPE_FIXED_FACTOR, \
+ .name = _name, \
+ .parent_names = (const char *[]) { _pname }, \
+ .num_parents = 1, \
+ .flags = _f, \
+ .div_off = _reg, \
+ .div_shift = _shift, \
+ .div_width = _width, \
+ .div_flags = _cf, \
+ .div_val = _v, \
+ .mult = _m, \
+ .div = _d, \
+ }
+
+void lgm_set_clk_val(void *membase, u32 reg,
+ u8 shift, u8 width, u32 set_val);
+u32 lgm_get_clk_val(void *membase, u32 reg, u8 shift, u8 width);
+void lgm_clk_add_lookup(struct lgm_clk_provider *ctx,
+ struct clk_hw *hw, unsigned int id);
+struct lgm_clk_provider *lgm_clk_init(struct device *dev,
+ unsigned int nr_clks);
+int lgm_clk_register_branches(struct lgm_clk_provider *ctx,
+ const struct lgm_clk_branch *list,
+ unsigned int nr_clk);
+int lgm_clk_register_plls(struct lgm_clk_provider *ctx,
+ const struct lgm_pll_clk_data *list,
+ unsigned int nr_clk);
+int lgm_clk_register_ddiv(struct lgm_clk_provider *ctx,
+ const struct lgm_clk_ddiv_data *list,
+ unsigned int nr_clk);
+#endif /* __CLK_CGU_H */
diff --git a/drivers/clk/x86/clk-lgm.c b/drivers/clk/x86/clk-lgm.c
new file mode 100644
index 000000000000..888c7ef13117
--- /dev/null
+++ b/drivers/clk/x86/clk-lgm.c
@@ -0,0 +1,351 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2019 Intel Corporation.
+ * Zhu YiXin <yixin.zhu@intel.com>
+ * Rahul Tanwar <rahul.tanwar@intel.com>
+ */
+#include <linux/clk-provider.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/platform_device.h>
+#include <linux/module.h>
+#include <linux/spinlock.h>
+#include <dt-bindings/clock/intel,lgm-clk.h>
+#include "clk-cgu.h"
+
+#define PLL_DIV_WIDTH 4
+#define PLL_DDIV_WIDTH 3
+
+/* Register definition */
+#define CGU_PLL0CZ_CFG0 0x000
+#define CGU_PLL0B_CFG0 0x060
+#define CGU_PLL1_CFG0 0x080
+#define CGU_PLL2_CFG0 0x0A0
+#define CGU_PLLPP_CFG0 0x0C0
+#define CGU_LJPLL3_CFG0 0x0E0
+#define CGU_LJPLL4_CFG0 0x100
+#define CGU_IF_CLK1 0x1A0
+#define CGU_IF_CLK2 0x1A4
+#define CGU_GATE0 0x300
+#define CGU_GATE1 0x310
+#define CGU_GATE2 0x320
+#define CGU_GATE3 0x310
+
+#define PLL_DIV(x) ((x) + 0x04)
+#define PLL_SSC(x) ((x) + 0x10)
+
+/*
+ * Below table defines the pair's of regval & effective dividers.
+ * It's more efficient to provide an explicit table due to non-linear
+ * relation between values.
+ */
+static const struct clk_div_table pll_div[] = {
+ { .val = 0, .div = 1 },
+ { .val = 1, .div = 2 },
+ { .val = 2, .div = 3 },
+ { .val = 3, .div = 4 },
+ { .val = 4, .div = 5 },
+ { .val = 5, .div = 6 },
+ { .val = 6, .div = 8 },
+ { .val = 7, .div = 10 },
+ { .val = 8, .div = 12 },
+ { .val = 9, .div = 16 },
+ { .val = 10, .div = 20 },
+ { .val = 11, .div = 24 },
+ { .val = 12, .div = 32 },
+ { .val = 13, .div = 40 },
+ { .val = 14, .div = 48 },
+ { .val = 15, .div = 64 },
+ {}
+};
+
+enum lgm_plls {
+ PLL0CZ, PLL0B, PLL1, PLL2, PLLPP, LJPLL3, LJPLL4,
+};
+
+static const char *const pll_p[] __initconst = { "osc" };
+static const char *const emmc_p[] __initconst = { "emmc4", "noc4" };
+static const char *const sdio_p[] __initconst = { "sdio3", "sdio2" };
+
+static const struct lgm_pll_clk_data lgm_pll_clks[] __initconst = {
+ [PLL0CZ] = LGM_PLL(LGM_CLK_PLL0CZ, "pll0cz", pll_p, 0,
+ CGU_PLL0CZ_CFG0, TYPE_ROPLL),
+ [PLL0B] = LGM_PLL(LGM_CLK_PLL0B, "pll0b", pll_p, 0,
+ CGU_PLL0B_CFG0, TYPE_ROPLL),
+ [PLL1] = LGM_PLL(LGM_CLK_PLL1, "pll1", pll_p, 0,
+ CGU_PLL1_CFG0, TYPE_ROPLL),
+ [PLL2] = LGM_PLL(LGM_CLK_PLL2, "pll2", pll_p, 0,
+ CGU_PLL2_CFG0, TYPE_ROPLL),
+ [PLLPP] = LGM_PLL(LGM_CLK_PLLPP, "pllpp", pll_p, 0,
+ CGU_PLLPP_CFG0, TYPE_ROPLL),
+ [LJPLL3] = LGM_PLL(LGM_CLK_LJPLL3, "ljpll3", pll_p, 0,
+ CGU_LJPLL3_CFG0, TYPE_LJPLL),
+ [LJPLL4] = LGM_PLL(LGM_CLK_LJPLL4, "ljpll4", pll_p, 0,
+ CGU_LJPLL4_CFG0, TYPE_LJPLL),
+};
+
+static const struct lgm_clk_branch lgm_branch_clks[] __initconst = {
+ /* Divider clocks */
+ LGM_DIV(LGM_CLK_PP_HW, "pp_hw", "pllpp", 0, PLL_DIV(CGU_PLLPP_CFG0),
+ 0, PLL_DIV_WIDTH, 0, 0, pll_div),
+ LGM_DIV(LGM_CLK_PP_UC, "pp_uc", "pllpp", 0, PLL_DIV(CGU_PLLPP_CFG0),
+ 4, PLL_DIV_WIDTH, 0, 0, pll_div),
+ LGM_DIV(LGM_CLK_PP_FXD, "pp_rt", "pllpp", 0, PLL_DIV(CGU_PLLPP_CFG0),
+ 8, PLL_DIV_WIDTH, 0, 0, pll_div),
+ LGM_DIV(LGM_CLK_PP_TBM, "pp_tbm", "pllpp", 0, PLL_DIV(CGU_PLLPP_CFG0),
+ 12, PLL_DIV_WIDTH, 0, 0, pll_div),
+ LGM_DIV(LGM_CLK_DDR, "ddr", "pll2", 0, PLL_DIV(CGU_PLL2_CFG0),
+ 0, PLL_DIV_WIDTH, 0, 0, pll_div),
+ LGM_DIV(LGM_CLK_CM, "cpu_cm", "pll0cz", 0, PLL_DIV(CGU_PLL0CZ_CFG0),
+ 0, PLL_DIV_WIDTH, 0, 0, pll_div),
+ LGM_DIV(LGM_CLK_IC, "cpu_ic", "pll0cz", 0, PLL_DIV(CGU_PLL0CZ_CFG0),
+ 4, PLL_DIV_WIDTH, 0, 0, pll_div),
+ LGM_DIV(LGM_CLK_SDIO3, "sdio3", "pll0cz", 0, PLL_DIV(CGU_PLL0CZ_CFG0),
+ 8, PLL_DIV_WIDTH, 0, 0, pll_div),
+ LGM_DIV(LGM_CLK_NGI, "ngi", "pll0b", 0, PLL_DIV(CGU_PLL0B_CFG0),
+ 0, PLL_DIV_WIDTH, 0, 0, pll_div),
+ LGM_DIV(LGM_CLK_NOC4, "noc4", "pll0b", 0, PLL_DIV(CGU_PLL0B_CFG0),
+ 4, PLL_DIV_WIDTH, 0, 0, pll_div),
+ LGM_DIV(LGM_CLK_SW, "switch", "pll0b", 0, PLL_DIV(CGU_PLL0B_CFG0),
+ 8, PLL_DIV_WIDTH, 0, 0, pll_div),
+ LGM_DIV(LGM_CLK_QSPI, "qspi", "pll0b", 0, PLL_DIV(CGU_PLL0B_CFG0),
+ 12, PLL_DIV_WIDTH, 0, 0, pll_div),
+ LGM_DIV(LGM_CLK_CT, "voice_ct", "pll1", 0, PLL_DIV(CGU_PLL1_CFG0),
+ 0, PLL_DIV_WIDTH, 0, 0, pll_div),
+ LGM_DIV(LGM_CLK_DSP, "voice_dsp", "pll1", 0, PLL_DIV(CGU_PLL1_CFG0),
+ 4, PLL_DIV_WIDTH, 0, 0, pll_div),
+ LGM_DIV(LGM_CLK_4X, "voice_4x", "pll1", 0, PLL_DIV(CGU_PLL1_CFG0),
+ 8, PLL_DIV_WIDTH, 0, 0, pll_div),
+ LGM_DIV(LGM_CLK_DCL, "voice_dcl", "pll1", 0, PLL_DIV(CGU_PLL1_CFG0),
+ 12, PLL_DIV_WIDTH, 0, 0, pll_div),
+
+ LGM_FIXED_FACTOR(LGM_CLK_EMMC4, "emmc4", "sdio3", 0, 0, 0, 0, 0, 0, 1, 4),
+ LGM_FIXED_FACTOR(LGM_CLK_SDIO2, "sdio2", "noc4", 0, 0, 0, 0, 0, 0, 1, 4),
+
+ LGM_MUX(LGM_CLK_EMMC, "emmc", emmc_p, 0, CGU_IF_CLK1, 0, 1, 0, 0),
+ LGM_MUX(LGM_CLK_SDIO, "sdio", sdio_p, 0, CGU_IF_CLK1, 1, 1, 0, 0),
+
+ /* Gate0 clocks */
+ LGM_GATE(LGM_GCLK_TOPNOC, "g_topnoc", NULL, 0, CGU_GATE0,
+ 0, GATE_CLK_HW, 0),
+ LGM_GATE(LGM_GCLK_C55, "g_c55", NULL, 0, CGU_GATE0,
+ 7, GATE_CLK_HW, 0),
+ LGM_GATE(LGM_GCLK_VCODEC, "g_vcodec", NULL, 0, CGU_GATE0,
+ 8, GATE_CLK_HW, 0),
+ LGM_GATE(LGM_GCLK_QSPI, "g_qspi", NULL, 0, CGU_GATE0,
+ 9, GATE_CLK_HW, 0),
+ LGM_GATE(LGM_GCLK_TEP, "g_tep", NULL, 0, CGU_GATE0,
+ 10, GATE_CLK_HW, 0),
+ LGM_GATE(LGM_GCLK_EIP197, "g_eip197", NULL, 0, CGU_GATE0,
+ 11, GATE_CLK_HW, 0),
+ LGM_GATE(LGM_GCLK_VAULT, "g_vault130", NULL, 0, CGU_GATE0,
+ 12, GATE_CLK_HW, 0),
+ LGM_GATE(LGM_GCLK_TOE, "g_toe", NULL, 0, CGU_GATE0,
+ 13, GATE_CLK_HW, 0),
+ LGM_GATE(LGM_GCLK_SDXC, "g_sdxc", NULL, 0, CGU_GATE0,
+ 14, GATE_CLK_HW, 0),
+ LGM_GATE(LGM_GCLK_EMMC, "g_emmc", NULL, 0, CGU_GATE0,
+ 15, GATE_CLK_HW, 0),
+ LGM_GATE(LGM_GCLK_EIP154, "g_eip154", NULL, 0, CGU_GATE0,
+ 16, GATE_CLK_HW, 0),
+ LGM_GATE(LGM_GCLK_SPI_DBG, "g_spidbg", NULL, 0, CGU_GATE0,
+ 17, GATE_CLK_HW, 0),
+ LGM_GATE(LGM_GCLK_DMA3, "g_dma3", NULL, 0, CGU_GATE0,
+ 28, GATE_CLK_HW, 0),
+
+ /* Gate1 clocks */
+ LGM_GATE(LGM_GCLK_DMA0, "g_dma0", NULL, 0, CGU_GATE1,
+ 0, GATE_CLK_HW, 0),
+ LGM_GATE(LGM_GCLK_LEDC0, "g_ledc0", NULL, 0, CGU_GATE1,
+ 1, GATE_CLK_HW, 0),
+ LGM_GATE(LGM_GCLK_LEDC1, "g_ledc1", NULL, 0, CGU_GATE1,
+ 2, GATE_CLK_HW, 0),
+ LGM_GATE(LGM_GCLK_I2S0, "g_i2s0", NULL, 0, CGU_GATE1,
+ 3, GATE_CLK_HW, 0),
+ LGM_GATE(LGM_GCLK_I2S1, "g_i2s1", NULL, 0, CGU_GATE1,
+ 4, GATE_CLK_HW, 0),
+ LGM_GATE(LGM_GCLK_EBU, "g_ebu", NULL, 0, CGU_GATE1,
+ 5, GATE_CLK_HW, 0),
+ LGM_GATE(LGM_GCLK_I2C0, "g_i2c0", NULL, 0, CGU_GATE1,
+ 7, GATE_CLK_HW, 0),
+ LGM_GATE(LGM_GCLK_I2C1, "g_i2c1", NULL, 0, CGU_GATE1,
+ 8, GATE_CLK_HW, 0),
+ LGM_GATE(LGM_GCLK_I2C2, "g_i2c2", NULL, 0, CGU_GATE1,
+ 9, GATE_CLK_HW, 0),
+ LGM_GATE(LGM_GCLK_I2C3, "g_i2c3", NULL, 0, CGU_GATE1,
+ 10, GATE_CLK_HW, 0),
+ LGM_GATE(LGM_GCLK_SSC0, "g_ssc0", NULL, 0, CGU_GATE1,
+ 12, GATE_CLK_HW, 0),
+ LGM_GATE(LGM_GCLK_SSC1, "g_ssc1", NULL, 0, CGU_GATE1,
+ 13, GATE_CLK_HW, 0),
+ LGM_GATE(LGM_GCLK_SSC2, "g_ssc2", NULL, 0, CGU_GATE1,
+ 14, GATE_CLK_HW, 0),
+ LGM_GATE(LGM_GCLK_SSC3, "g_ssc3", NULL, 0, CGU_GATE1,
+ 15, GATE_CLK_HW, 0),
+ LGM_GATE(LGM_GCLK_GPTC0, "g_gptc0", NULL, 0, CGU_GATE1,
+ 17, GATE_CLK_HW, 0),
+ LGM_GATE(LGM_GCLK_GPTC1, "g_gptc1", NULL, 0, CGU_GATE1,
+ 18, GATE_CLK_HW, 0),
+ LGM_GATE(LGM_GCLK_GPTC2, "g_gptc2", NULL, 0, CGU_GATE1,
+ 19, GATE_CLK_HW, 0),
+ LGM_GATE(LGM_GCLK_GPTC3, "g_gptc3", NULL, 0, CGU_GATE1,
+ 20, GATE_CLK_HW, 0),
+ LGM_GATE(LGM_GCLK_ASC0, "g_asc0", NULL, 0, CGU_GATE1,
+ 22, GATE_CLK_HW, 0),
+ LGM_GATE(LGM_GCLK_ASC1, "g_asc1", NULL, 0, CGU_GATE1,
+ 23, GATE_CLK_HW, 0),
+ LGM_GATE(LGM_GCLK_ASC2, "g_asc2", NULL, 0, CGU_GATE1,
+ 24, GATE_CLK_HW, 0),
+ LGM_GATE(LGM_GCLK_ASC3, "g_asc3", NULL, 0, CGU_GATE1,
+ 25, GATE_CLK_HW, 0),
+ LGM_GATE(LGM_GCLK_PCM0, "g_pcm0", NULL, 0, CGU_GATE1,
+ 27, GATE_CLK_HW, 0),
+ LGM_GATE(LGM_GCLK_PCM1, "g_pcm1", NULL, 0, CGU_GATE1,
+ 28, GATE_CLK_HW, 0),
+ LGM_GATE(LGM_GCLK_PCM2, "g_pcm2", NULL, 0, CGU_GATE1,
+ 29, GATE_CLK_HW, 0),
+ LGM_GATE(LGM_GCLK_PERINOC, "g_perinoc", NULL, 0, CGU_GATE1,
+ 31, GATE_CLK_HW, 0),
+
+ /* Gate2 clock */
+ LGM_GATE(LGM_GCLK_PCIE10, "g_pcie10", NULL, 0, CGU_GATE2,
+ 1, GATE_CLK_HW, 0),
+ LGM_GATE(LGM_GCLK_PCIE11, "g_pcie11", NULL, 0, CGU_GATE2,
+ 2, GATE_CLK_HW, 0),
+ LGM_GATE(LGM_GCLK_PCIE30, "g_pcie30", NULL, 0, CGU_GATE2,
+ 3, GATE_CLK_HW, 0),
+ LGM_GATE(LGM_GCLK_PCIE31, "g_pcie31", NULL, 0, CGU_GATE2,
+ 4, GATE_CLK_HW, 0),
+ LGM_GATE(LGM_GCLK_PCIE20, "g_pcie20", NULL, 0, CGU_GATE2,
+ 5, GATE_CLK_HW, 0),
+ LGM_GATE(LGM_GCLK_PCIE21, "g_pcie21", NULL, 0, CGU_GATE2,
+ 6, GATE_CLK_HW, 0),
+ LGM_GATE(LGM_GCLK_PCIE40, "g_pcie40", NULL, 0, CGU_GATE2,
+ 7, GATE_CLK_HW, 0),
+ LGM_GATE(LGM_GCLK_PCIE41, "g_pcie41", NULL, 0, CGU_GATE2,
+ 8, GATE_CLK_HW, 0),
+ LGM_GATE(LGM_GCLK_XPCS0, "g_xpcs0", NULL, 0, CGU_GATE2,
+ 10, GATE_CLK_HW, 0),
+ LGM_GATE(LGM_GCLK_XPCS1, "g_xpcs1", NULL, 0, CGU_GATE2,
+ 11, GATE_CLK_HW, 0),
+ LGM_GATE(LGM_GCLK_XPCS2, "g_xpcs2", NULL, 0, CGU_GATE2,
+ 12, GATE_CLK_HW, 0),
+ LGM_GATE(LGM_GCLK_XPCS3, "g_xpcs3", NULL, 0, CGU_GATE2,
+ 13, GATE_CLK_HW, 0),
+ LGM_GATE(LGM_GCLK_SATA0, "g_sata0", NULL, 0, CGU_GATE2,
+ 14, GATE_CLK_HW, 0),
+ LGM_GATE(LGM_GCLK_SATA1, "g_sata1", NULL, 0, CGU_GATE2,
+ 15, GATE_CLK_HW, 0),
+ LGM_GATE(LGM_GCLK_SATA2, "g_sata2", NULL, 0, CGU_GATE2,
+ 16, GATE_CLK_HW, 0),
+ LGM_GATE(LGM_GCLK_SATA3, "g_sata3", NULL, 0, CGU_GATE2,
+ 17, GATE_CLK_HW, 0),
+
+ /* Gate3 clock */
+ LGM_GATE(LGM_GCLK_ARCEM4, "g_arcem4", NULL, 0, CGU_GATE3,
+ 0, GATE_CLK_HW, 0),
+ LGM_GATE(LGM_GCLK_VPNHOST, "g_vpnhost", NULL, 0, CGU_GATE3,
+ 1, GATE_CLK_HW, 0),
+ LGM_GATE(LGM_GCLK_IDMAR1, "g_idmar1", NULL, 0, CGU_GATE3,
+ 2, GATE_CLK_HW, 0),
+ LGM_GATE(LGM_GCLK_IDMAT0, "g_idmat0", NULL, 0, CGU_GATE3,
+ 3, GATE_CLK_HW, 0),
+ LGM_GATE(LGM_GCLK_IDMAT1, "g_idmat1", NULL, 0, CGU_GATE3,
+ 4, GATE_CLK_HW, 0),
+ LGM_GATE(LGM_GCLK_IDMAT2, "g_idmat2", NULL, 0, CGU_GATE3,
+ 5, GATE_CLK_HW, 0),
+ LGM_GATE(LGM_GCLK_PPV4, "g_ppv4", NULL, 0, CGU_GATE3,
+ 8, GATE_CLK_HW, 0),
+ LGM_GATE(LGM_GCLK_GSWIPO, "g_gswipo", NULL, 0, CGU_GATE3,
+ 9, GATE_CLK_HW, 0),
+ LGM_GATE(LGM_GCLK_CQEM, "g_cqem", NULL, 0, CGU_GATE3,
+ 10, GATE_CLK_HW, 0),
+ LGM_GATE(LGM_GCLK_PON, "g_pon", NULL, 0, CGU_GATE3,
+ 11, GATE_CLK_HW, 0),
+ LGM_GATE(LGM_GCLK_BM, "g_bm", NULL, 0, CGU_GATE3,
+ 12, GATE_CLK_HW, 0),
+ LGM_GATE(LGM_GCLK_PB, "g_pb", NULL, 0, CGU_GATE3,
+ 13, GATE_CLK_HW, 0),
+ LGM_GATE(LGM_GCLK_XPCS5, "g_xpcs5", NULL, 0, CGU_GATE3,
+ 14, GATE_CLK_HW, 0),
+ LGM_GATE(LGM_GCLK_USB1, "g_usb1", NULL, 0, CGU_GATE3,
+ 25, GATE_CLK_HW, 0),
+ LGM_GATE(LGM_GCLK_USB2, "g_usb2", NULL, 0, CGU_GATE3,
+ 26, GATE_CLK_HW, 0),
+};
+
+static const struct lgm_clk_ddiv_data lgm_ddiv_clks[] __initconst = {
+ LGM_DDIV(LGM_CLK_CML, "dd_cml", "ljpll3", 0,
+ PLL_DIV(CGU_LJPLL3_CFG0), 0, PLL_DDIV_WIDTH,
+ 3, PLL_DDIV_WIDTH, 29, 0),
+ LGM_DDIV(LGM_CLK_CBPHY, "dd_cbphy", "ljpll3", 0,
+ PLL_DIV(CGU_LJPLL3_CFG0), 6, PLL_DDIV_WIDTH,
+ 9, PLL_DDIV_WIDTH, 28, 0),
+ LGM_DDIV(LGM_CLK_POOL, "dd_pool", "ljpll3", 0,
+ PLL_DIV(CGU_LJPLL3_CFG0), 12, PLL_DDIV_WIDTH,
+ 15, PLL_DDIV_WIDTH, 28, 0),
+ LGM_DDIV(LGM_CLK_PTP, "dd_ptp", "ljpll3", 0,
+ PLL_DIV(CGU_LJPLL3_CFG0), 18, PLL_DDIV_WIDTH,
+ 21, PLL_DDIV_WIDTH, 28, 0),
+ LGM_DDIV(LGM_CLK_PCIE, "dd_pcie", "ljpll4", 0,
+ PLL_DIV(CGU_LJPLL4_CFG0), 0, PLL_DDIV_WIDTH,
+ 3, PLL_DDIV_WIDTH, 29, 0),
+};
+
+static int __init lgm_cgu_probe(struct platform_device *pdev)
+{
+ struct lgm_clk_provider *ctx;
+ struct device *dev = &pdev->dev;
+ struct device_node *np = dev->of_node;
+ int ret;
+
+ ctx = lgm_clk_init(dev, CLK_NR_CLKS);
+ if (IS_ERR(ctx))
+ return PTR_ERR(ctx);
+
+ ctx->membase = devm_platform_ioremap_resource(pdev, 0);
+ if (IS_ERR(ctx->membase))
+ return PTR_ERR(ctx->membase);
+
+ ctx->np = np;
+ ctx->dev = dev;
+ raw_spin_lock_init(&ctx->lock);
+
+ ret = lgm_clk_register_plls(ctx, lgm_pll_clks,
+ ARRAY_SIZE(lgm_pll_clks));
+ if (ret)
+ return ret;
+
+ ret = lgm_clk_register_branches(ctx, lgm_branch_clks,
+ ARRAY_SIZE(lgm_branch_clks));
+ if (ret)
+ return ret;
+
+ ret = lgm_clk_register_ddiv(ctx, lgm_ddiv_clks,
+ ARRAY_SIZE(lgm_ddiv_clks));
+ if (ret)
+ return ret;
+
+ ret = devm_of_clk_add_hw_provider(dev, of_clk_hw_onecell_get,
+ &ctx->clk_data);
+ if (ret)
+ return ret;
+
+ platform_set_drvdata(pdev, ctx);
+ return 0;
+}
+
+static const struct of_device_id of_lgm_cgu_match[] = {
+ {.compatible = "intel,cgu-lgm"},
+ {}
+};
+
+static struct platform_driver lgm_cgu_driver __refdata = {
+ .probe = lgm_cgu_probe,
+ .driver = {
+ .name = "cgu-lgm",
+ .of_match_table = of_lgm_cgu_match,
+ },
+};
+
+builtin_platform_driver(lgm_cgu_driver);
--
2.11.0
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  Last update: 2019-12-20 04:32    [W:0.120 / U:0.072 seconds]
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