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authorStephen Boyd <sboyd@codeaurora.org>2016-05-06 11:21:23 -0700
committerStephen Boyd <sboyd@codeaurora.org>2016-05-06 11:21:23 -0700
commitf3bf9841b837cba56d1e42d510c59623f14de3e4 (patch)
treec22e8d7cc2ab6f67bfbec570f0434166a6e76ef6 /drivers/clk
parent4087a5f2e5e75a6d0231d1318bada1a12972a5fd (diff)
parent6c9da387c8d5c5254857d2782bd6c314226f4f27 (diff)
Merge branch 'clk-hi3519' into clk-next
* clk-hi3519: clk: hisilicon: add CRG driver for hi3519 soc clk: hisilicon: export some hisilicon APIs to modules reset: hisilicon: add reset controller driver for hisilicon SOCs
Diffstat (limited to 'drivers/clk')
-rw-r--r--drivers/clk/hisilicon/Kconfig15
-rw-r--r--drivers/clk/hisilicon/Makefile2
-rw-r--r--drivers/clk/hisilicon/clk-hi3519.c131
-rw-r--r--drivers/clk/hisilicon/clk.c23
-rw-r--r--drivers/clk/hisilicon/clk.h14
-rw-r--r--drivers/clk/hisilicon/reset.c134
-rw-r--r--drivers/clk/hisilicon/reset.h36
7 files changed, 340 insertions, 15 deletions
diff --git a/drivers/clk/hisilicon/Kconfig b/drivers/clk/hisilicon/Kconfig
index e43485448612..3f537a04c6a6 100644
--- a/drivers/clk/hisilicon/Kconfig
+++ b/drivers/clk/hisilicon/Kconfig
@@ -1,3 +1,11 @@
+config COMMON_CLK_HI3519
+ tristate "Hi3519 Clock Driver"
+ depends on ARCH_HISI || COMPILE_TEST
+ select RESET_HISI
+ default ARCH_HISI
+ help
+ Build the clock driver for hi3519.
+
config COMMON_CLK_HI6220
bool "Hi6220 Clock Driver"
depends on ARCH_HISI || COMPILE_TEST
@@ -5,6 +13,13 @@ config COMMON_CLK_HI6220
help
Build the Hisilicon Hi6220 clock driver based on the common clock framework.
+config RESET_HISI
+ bool "HiSilicon Reset Controller Driver"
+ depends on ARCH_HISI || COMPILE_TEST
+ select RESET_CONTROLLER
+ help
+ Build reset controller driver for HiSilicon device chipsets.
+
config STUB_CLK_HI6220
bool "Hi6220 Stub Clock Driver"
depends on COMMON_CLK_HI6220 && MAILBOX
diff --git a/drivers/clk/hisilicon/Makefile b/drivers/clk/hisilicon/Makefile
index 74dba31590f9..e169ec7da023 100644
--- a/drivers/clk/hisilicon/Makefile
+++ b/drivers/clk/hisilicon/Makefile
@@ -7,5 +7,7 @@ obj-y += clk.o clkgate-separated.o clkdivider-hi6220.o
obj-$(CONFIG_ARCH_HI3xxx) += clk-hi3620.o
obj-$(CONFIG_ARCH_HIP04) += clk-hip04.o
obj-$(CONFIG_ARCH_HIX5HD2) += clk-hix5hd2.o
+obj-$(CONFIG_COMMON_CLK_HI3519) += clk-hi3519.o
obj-$(CONFIG_COMMON_CLK_HI6220) += clk-hi6220.o
+obj-$(CONFIG_RESET_HISI) += reset.o
obj-$(CONFIG_STUB_CLK_HI6220) += clk-hi6220-stub.o
diff --git a/drivers/clk/hisilicon/clk-hi3519.c b/drivers/clk/hisilicon/clk-hi3519.c
new file mode 100644
index 000000000000..715c7301a66a
--- /dev/null
+++ b/drivers/clk/hisilicon/clk-hi3519.c
@@ -0,0 +1,131 @@
+/*
+ * Hi3519 Clock Driver
+ *
+ * Copyright (c) 2015-2016 HiSilicon Technologies Co., Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <dt-bindings/clock/hi3519-clock.h>
+#include <linux/clk-provider.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include "clk.h"
+#include "reset.h"
+
+#define HI3519_INNER_CLK_OFFSET 64
+#define HI3519_FIXED_24M 65
+#define HI3519_FIXED_50M 66
+#define HI3519_FIXED_75M 67
+#define HI3519_FIXED_125M 68
+#define HI3519_FIXED_150M 69
+#define HI3519_FIXED_200M 70
+#define HI3519_FIXED_250M 71
+#define HI3519_FIXED_300M 72
+#define HI3519_FIXED_400M 73
+#define HI3519_FMC_MUX 74
+
+#define HI3519_NR_CLKS 128
+
+static const struct hisi_fixed_rate_clock hi3519_fixed_rate_clks[] = {
+ { HI3519_FIXED_24M, "24m", NULL, 0, 24000000, },
+ { HI3519_FIXED_50M, "50m", NULL, 0, 50000000, },
+ { HI3519_FIXED_75M, "75m", NULL, 0, 75000000, },
+ { HI3519_FIXED_125M, "125m", NULL, 0, 125000000, },
+ { HI3519_FIXED_150M, "150m", NULL, 0, 150000000, },
+ { HI3519_FIXED_200M, "200m", NULL, 0, 200000000, },
+ { HI3519_FIXED_250M, "250m", NULL, 0, 250000000, },
+ { HI3519_FIXED_300M, "300m", NULL, 0, 300000000, },
+ { HI3519_FIXED_400M, "400m", NULL, 0, 400000000, },
+};
+
+static const char *const fmc_mux_p[] = {
+ "24m", "75m", "125m", "150m", "200m", "250m", "300m", "400m", };
+static u32 fmc_mux_table[] = {0, 1, 2, 3, 4, 5, 6, 7};
+
+static const struct hisi_mux_clock hi3519_mux_clks[] = {
+ { HI3519_FMC_MUX, "fmc_mux", fmc_mux_p, ARRAY_SIZE(fmc_mux_p),
+ CLK_SET_RATE_PARENT, 0xc0, 2, 3, 0, fmc_mux_table, },
+};
+
+static const struct hisi_gate_clock hi3519_gate_clks[] = {
+ { HI3519_FMC_CLK, "clk_fmc", "fmc_mux",
+ CLK_SET_RATE_PARENT, 0xc0, 1, 0, },
+ { HI3519_UART0_CLK, "clk_uart0", "24m",
+ CLK_SET_RATE_PARENT, 0xe4, 20, 0, },
+ { HI3519_UART1_CLK, "clk_uart1", "24m",
+ CLK_SET_RATE_PARENT, 0xe4, 21, 0, },
+ { HI3519_UART2_CLK, "clk_uart2", "24m",
+ CLK_SET_RATE_PARENT, 0xe4, 22, 0, },
+ { HI3519_UART3_CLK, "clk_uart3", "24m",
+ CLK_SET_RATE_PARENT, 0xe4, 23, 0, },
+ { HI3519_UART4_CLK, "clk_uart4", "24m",
+ CLK_SET_RATE_PARENT, 0xe4, 24, 0, },
+ { HI3519_SPI0_CLK, "clk_spi0", "50m",
+ CLK_SET_RATE_PARENT, 0xe4, 16, 0, },
+ { HI3519_SPI1_CLK, "clk_spi1", "50m",
+ CLK_SET_RATE_PARENT, 0xe4, 17, 0, },
+ { HI3519_SPI2_CLK, "clk_spi2", "50m",
+ CLK_SET_RATE_PARENT, 0xe4, 18, 0, },
+};
+
+static int hi3519_clk_probe(struct platform_device *pdev)
+{
+ struct device_node *np = pdev->dev.of_node;
+ struct hisi_clock_data *clk_data;
+ struct hisi_reset_controller *rstc;
+
+ rstc = hisi_reset_init(np);
+ if (!rstc)
+ return -ENOMEM;
+
+ clk_data = hisi_clk_init(np, HI3519_NR_CLKS);
+ if (!clk_data) {
+ hisi_reset_exit(rstc);
+ return -ENODEV;
+ }
+
+ hisi_clk_register_fixed_rate(hi3519_fixed_rate_clks,
+ ARRAY_SIZE(hi3519_fixed_rate_clks),
+ clk_data);
+ hisi_clk_register_mux(hi3519_mux_clks, ARRAY_SIZE(hi3519_mux_clks),
+ clk_data);
+ hisi_clk_register_gate(hi3519_gate_clks,
+ ARRAY_SIZE(hi3519_gate_clks), clk_data);
+
+ return 0;
+}
+
+static const struct of_device_id hi3519_clk_match_table[] = {
+ { .compatible = "hisilicon,hi3519-crg" },
+ { }
+};
+MODULE_DEVICE_TABLE(of, hi3519_clk_match_table);
+
+static struct platform_driver hi3519_clk_driver = {
+ .probe = hi3519_clk_probe,
+ .driver = {
+ .name = "hi3519-clk",
+ .of_match_table = hi3519_clk_match_table,
+ },
+};
+
+static int __init hi3519_clk_init(void)
+{
+ return platform_driver_register(&hi3519_clk_driver);
+}
+core_initcall(hi3519_clk_init);
+
+MODULE_LICENSE("GPL v2");
+MODULE_DESCRIPTION("HiSilicon Hi3519 Clock Driver");
diff --git a/drivers/clk/hisilicon/clk.c b/drivers/clk/hisilicon/clk.c
index 9f8e76676553..9b15adbfc30c 100644
--- a/drivers/clk/hisilicon/clk.c
+++ b/drivers/clk/hisilicon/clk.c
@@ -37,7 +37,7 @@
static DEFINE_SPINLOCK(hisi_clk_lock);
-struct hisi_clock_data __init *hisi_clk_init(struct device_node *np,
+struct hisi_clock_data *hisi_clk_init(struct device_node *np,
int nr_clks)
{
struct hisi_clock_data *clk_data;
@@ -71,8 +71,9 @@ err_data:
err:
return NULL;
}
+EXPORT_SYMBOL_GPL(hisi_clk_init);
-void __init hisi_clk_register_fixed_rate(struct hisi_fixed_rate_clock *clks,
+void hisi_clk_register_fixed_rate(const struct hisi_fixed_rate_clock *clks,
int nums, struct hisi_clock_data *data)
{
struct clk *clk;
@@ -91,8 +92,9 @@ void __init hisi_clk_register_fixed_rate(struct hisi_fixed_rate_clock *clks,
data->clk_data.clks[clks[i].id] = clk;
}
}
+EXPORT_SYMBOL_GPL(hisi_clk_register_fixed_rate);
-void __init hisi_clk_register_fixed_factor(struct hisi_fixed_factor_clock *clks,
+void hisi_clk_register_fixed_factor(const struct hisi_fixed_factor_clock *clks,
int nums,
struct hisi_clock_data *data)
{
@@ -112,8 +114,9 @@ void __init hisi_clk_register_fixed_factor(struct hisi_fixed_factor_clock *clks,
data->clk_data.clks[clks[i].id] = clk;
}
}
+EXPORT_SYMBOL_GPL(hisi_clk_register_fixed_factor);
-void __init hisi_clk_register_mux(struct hisi_mux_clock *clks,
+void hisi_clk_register_mux(const struct hisi_mux_clock *clks,
int nums, struct hisi_clock_data *data)
{
struct clk *clk;
@@ -141,8 +144,9 @@ void __init hisi_clk_register_mux(struct hisi_mux_clock *clks,
data->clk_data.clks[clks[i].id] = clk;
}
}
+EXPORT_SYMBOL_GPL(hisi_clk_register_mux);
-void __init hisi_clk_register_divider(struct hisi_divider_clock *clks,
+void hisi_clk_register_divider(const struct hisi_divider_clock *clks,
int nums, struct hisi_clock_data *data)
{
struct clk *clk;
@@ -170,8 +174,9 @@ void __init hisi_clk_register_divider(struct hisi_divider_clock *clks,
data->clk_data.clks[clks[i].id] = clk;
}
}
+EXPORT_SYMBOL_GPL(hisi_clk_register_divider);
-void __init hisi_clk_register_gate(struct hisi_gate_clock *clks,
+void hisi_clk_register_gate(const struct hisi_gate_clock *clks,
int nums, struct hisi_clock_data *data)
{
struct clk *clk;
@@ -198,8 +203,9 @@ void __init hisi_clk_register_gate(struct hisi_gate_clock *clks,
data->clk_data.clks[clks[i].id] = clk;
}
}
+EXPORT_SYMBOL_GPL(hisi_clk_register_gate);
-void __init hisi_clk_register_gate_sep(struct hisi_gate_clock *clks,
+void hisi_clk_register_gate_sep(const struct hisi_gate_clock *clks,
int nums, struct hisi_clock_data *data)
{
struct clk *clk;
@@ -226,8 +232,9 @@ void __init hisi_clk_register_gate_sep(struct hisi_gate_clock *clks,
data->clk_data.clks[clks[i].id] = clk;
}
}
+EXPORT_SYMBOL_GPL(hisi_clk_register_gate_sep);
-void __init hi6220_clk_register_divider(struct hi6220_divider_clock *clks,
+void __init hi6220_clk_register_divider(const struct hi6220_divider_clock *clks,
int nums, struct hisi_clock_data *data)
{
struct clk *clk;
diff --git a/drivers/clk/hisilicon/clk.h b/drivers/clk/hisilicon/clk.h
index b56fbc1c5f27..20d64afe4ad8 100644
--- a/drivers/clk/hisilicon/clk.h
+++ b/drivers/clk/hisilicon/clk.h
@@ -111,18 +111,18 @@ struct clk *hi6220_register_clkdiv(struct device *dev, const char *name,
u8 shift, u8 width, u32 mask_bit, spinlock_t *lock);
struct hisi_clock_data *hisi_clk_init(struct device_node *, int);
-void hisi_clk_register_fixed_rate(struct hisi_fixed_rate_clock *,
+void hisi_clk_register_fixed_rate(const struct hisi_fixed_rate_clock *,
int, struct hisi_clock_data *);
-void hisi_clk_register_fixed_factor(struct hisi_fixed_factor_clock *,
+void hisi_clk_register_fixed_factor(const struct hisi_fixed_factor_clock *,
int, struct hisi_clock_data *);
-void hisi_clk_register_mux(struct hisi_mux_clock *, int,
+void hisi_clk_register_mux(const struct hisi_mux_clock *, int,
struct hisi_clock_data *);
-void hisi_clk_register_divider(struct hisi_divider_clock *,
+void hisi_clk_register_divider(const struct hisi_divider_clock *,
int, struct hisi_clock_data *);
-void hisi_clk_register_gate(struct hisi_gate_clock *,
+void hisi_clk_register_gate(const struct hisi_gate_clock *,
int, struct hisi_clock_data *);
-void hisi_clk_register_gate_sep(struct hisi_gate_clock *,
+void hisi_clk_register_gate_sep(const struct hisi_gate_clock *,
int, struct hisi_clock_data *);
-void hi6220_clk_register_divider(struct hi6220_divider_clock *,
+void hi6220_clk_register_divider(const struct hi6220_divider_clock *,
int, struct hisi_clock_data *);
#endif /* __HISI_CLK_H */
diff --git a/drivers/clk/hisilicon/reset.c b/drivers/clk/hisilicon/reset.c
new file mode 100644
index 000000000000..6aa49c2204d0
--- /dev/null
+++ b/drivers/clk/hisilicon/reset.c
@@ -0,0 +1,134 @@
+/*
+ * Hisilicon Reset Controller Driver
+ *
+ * Copyright (c) 2015-2016 HiSilicon Technologies Co., Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <linux/io.h>
+#include <linux/of_address.h>
+#include <linux/reset-controller.h>
+#include <linux/slab.h>
+#include <linux/spinlock.h>
+#include "reset.h"
+
+#define HISI_RESET_BIT_MASK 0x1f
+#define HISI_RESET_OFFSET_SHIFT 8
+#define HISI_RESET_OFFSET_MASK 0xffff00
+
+struct hisi_reset_controller {
+ spinlock_t lock;
+ void __iomem *membase;
+ struct reset_controller_dev rcdev;
+};
+
+
+#define to_hisi_reset_controller(rcdev) \
+ container_of(rcdev, struct hisi_reset_controller, rcdev)
+
+static int hisi_reset_of_xlate(struct reset_controller_dev *rcdev,
+ const struct of_phandle_args *reset_spec)
+{
+ u32 offset;
+ u8 bit;
+
+ offset = (reset_spec->args[0] << HISI_RESET_OFFSET_SHIFT)
+ & HISI_RESET_OFFSET_MASK;
+ bit = reset_spec->args[1] & HISI_RESET_BIT_MASK;
+
+ return (offset | bit);
+}
+
+static int hisi_reset_assert(struct reset_controller_dev *rcdev,
+ unsigned long id)
+{
+ struct hisi_reset_controller *rstc = to_hisi_reset_controller(rcdev);
+ unsigned long flags;
+ u32 offset, reg;
+ u8 bit;
+
+ offset = (id & HISI_RESET_OFFSET_MASK) >> HISI_RESET_OFFSET_SHIFT;
+ bit = id & HISI_RESET_BIT_MASK;
+
+ spin_lock_irqsave(&rstc->lock, flags);
+
+ reg = readl(rstc->membase + offset);
+ writel(reg | BIT(bit), rstc->membase + offset);
+
+ spin_unlock_irqrestore(&rstc->lock, flags);
+
+ return 0;
+}
+
+static int hisi_reset_deassert(struct reset_controller_dev *rcdev,
+ unsigned long id)
+{
+ struct hisi_reset_controller *rstc = to_hisi_reset_controller(rcdev);
+ unsigned long flags;
+ u32 offset, reg;
+ u8 bit;
+
+ offset = (id & HISI_RESET_OFFSET_MASK) >> HISI_RESET_OFFSET_SHIFT;
+ bit = id & HISI_RESET_BIT_MASK;
+
+ spin_lock_irqsave(&rstc->lock, flags);
+
+ reg = readl(rstc->membase + offset);
+ writel(reg & ~BIT(bit), rstc->membase + offset);
+
+ spin_unlock_irqrestore(&rstc->lock, flags);
+
+ return 0;
+}
+
+static const struct reset_control_ops hisi_reset_ops = {
+ .assert = hisi_reset_assert,
+ .deassert = hisi_reset_deassert,
+};
+
+struct hisi_reset_controller *hisi_reset_init(struct device_node *np)
+{
+ struct hisi_reset_controller *rstc;
+
+ rstc = kzalloc(sizeof(*rstc), GFP_KERNEL);
+ if (!rstc)
+ return NULL;
+
+ rstc->membase = of_iomap(np, 0);
+ if (!rstc->membase) {
+ kfree(rstc);
+ return NULL;
+ }
+
+ spin_lock_init(&rstc->lock);
+
+ rstc->rcdev.owner = THIS_MODULE;
+ rstc->rcdev.ops = &hisi_reset_ops;
+ rstc->rcdev.of_node = np;
+ rstc->rcdev.of_reset_n_cells = 2;
+ rstc->rcdev.of_xlate = hisi_reset_of_xlate;
+ reset_controller_register(&rstc->rcdev);
+
+ return rstc;
+}
+EXPORT_SYMBOL_GPL(hisi_reset_init);
+
+void hisi_reset_exit(struct hisi_reset_controller *rstc)
+{
+ reset_controller_unregister(&rstc->rcdev);
+ iounmap(rstc->membase);
+ kfree(rstc);
+}
+EXPORT_SYMBOL_GPL(hisi_reset_exit);
diff --git a/drivers/clk/hisilicon/reset.h b/drivers/clk/hisilicon/reset.h
new file mode 100644
index 000000000000..677d773ed27c
--- /dev/null
+++ b/drivers/clk/hisilicon/reset.h
@@ -0,0 +1,36 @@
+/*
+ * Copyright (c) 2015 HiSilicon Technologies Co., Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __HISI_RESET_H
+#define __HISI_RESET_H
+
+struct device_node;
+struct hisi_reset_controller;
+
+#ifdef CONFIG_RESET_CONTROLLER
+struct hisi_reset_controller *hisi_reset_init(struct device_node *np);
+void hisi_reset_exit(struct hisi_reset_controller *rstc);
+#else
+static inline hisi_reset_controller *hisi_reset_init(struct device_node *np)
+{
+ return 0;
+}
+static inline void hisi_reset_exit(struct hisi_reset_controller *rstc)
+{}
+#endif
+
+#endif /* __HISI_RESET_H */