diff mbox

[V5,Base,on,RC7,2/3] Add reset controller for hi6220 SoC platform.

Message ID 1445939498-94147-2-git-send-email-puck.chen@hisilicon.com
State New
Headers show

Commit Message

Chen Feng Oct. 27, 2015, 9:51 a.m. UTC
reset: add driver for hi6220 reset controller

Signed-off-by: Chen Feng <puck.chen@hisilicon.com>

---
 drivers/reset/Kconfig                          |   1 +
 drivers/reset/Makefile                         |   1 +
 drivers/reset/hisilicon/Kconfig                |   5 ++
 drivers/reset/hisilicon/Makefile               |   1 +
 drivers/reset/hisilicon/hi6220_reset.c         | 107 +++++++++++++++++++++++++
 include/dt-bindings/reset/hisi,hi6220-resets.h |  67 ++++++++++++++++
 6 files changed, 182 insertions(+)
 create mode 100644 drivers/reset/hisilicon/Kconfig
 create mode 100644 drivers/reset/hisilicon/Makefile
 create mode 100644 drivers/reset/hisilicon/hi6220_reset.c
 create mode 100644 include/dt-bindings/reset/hisi,hi6220-resets.h

-- 
1.9.1

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diff mbox

Patch

diff --git a/drivers/reset/Kconfig b/drivers/reset/Kconfig
index 0615f50..df37212 100644
--- a/drivers/reset/Kconfig
+++ b/drivers/reset/Kconfig
@@ -13,3 +13,4 @@  menuconfig RESET_CONTROLLER
 	  If unsure, say no.
 
 source "drivers/reset/sti/Kconfig"
+source "drivers/reset/hisilicon/Kconfig"
diff --git a/drivers/reset/Makefile b/drivers/reset/Makefile
index 85d5904..99e18c8 100644
--- a/drivers/reset/Makefile
+++ b/drivers/reset/Makefile
@@ -4,5 +4,6 @@  obj-$(CONFIG_ARCH_SOCFPGA) += reset-socfpga.o
 obj-$(CONFIG_ARCH_BERLIN) += reset-berlin.o
 obj-$(CONFIG_ARCH_SUNXI) += reset-sunxi.o
 obj-$(CONFIG_ARCH_STI) += sti/
+obj-$(CONFIG_ARCH_HISI) += hisilicon/
 obj-$(CONFIG_ARCH_ZYNQ) += reset-zynq.o
 obj-$(CONFIG_ATH79) += reset-ath79.o
diff --git a/drivers/reset/hisilicon/Kconfig b/drivers/reset/hisilicon/Kconfig
new file mode 100644
index 0000000..26bf95a
--- /dev/null
+++ b/drivers/reset/hisilicon/Kconfig
@@ -0,0 +1,5 @@ 
+config COMMON_RESET_HI6220
+	tristate "Hi6220 Reset Driver"
+	depends on (ARCH_HISI && RESET_CONTROLLER)
+	help
+	  Build the Hisilicon Hi6220 reset driver.
diff --git a/drivers/reset/hisilicon/Makefile b/drivers/reset/hisilicon/Makefile
new file mode 100644
index 0000000..c932f86
--- /dev/null
+++ b/drivers/reset/hisilicon/Makefile
@@ -0,0 +1 @@ 
+obj-$(CONFIG_COMMON_RESET_HI6220) += hi6220_reset.o
diff --git a/drivers/reset/hisilicon/hi6220_reset.c b/drivers/reset/hisilicon/hi6220_reset.c
new file mode 100644
index 0000000..eac9531
--- /dev/null
+++ b/drivers/reset/hisilicon/hi6220_reset.c
@@ -0,0 +1,107 @@ 
+/*
+ * Hisilicon Hi6220 reset controller driver
+ *
+ * Copyright (c) 2015 Hisilicon Limited.
+ *
+ * Author: Feng Chen <puck.chen@hisilicon.com>
+ *
+ * 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/init.h>
+#include <linux/bitops.h>
+#include <linux/of.h>
+#include <linux/reset-controller.h>
+#include <linux/reset.h>
+#include <linux/platform_device.h>
+
+#define ASSERT_OFFSET            0x300
+#define DEASSERT_OFFSET          0x304
+#define MAX_INDEX                0x509
+
+#define to_reset_data(x) container_of(x, struct hi6220_reset_data, rc_dev)
+
+struct hi6220_reset_data {
+	void __iomem			*assert_base;
+	void __iomem			*deassert_base;
+	struct reset_controller_dev	rc_dev;
+};
+
+static int hi6220_reset_assert(struct reset_controller_dev *rc_dev,
+			       unsigned long idx)
+{
+	struct hi6220_reset_data *data = to_reset_data(rc_dev);
+
+	int bank = idx >> 8;
+	int offset = idx & 0xff;
+
+	writel(BIT(offset), data->assert_base + (bank * 0x10));
+
+	return 0;
+}
+
+static int hi6220_reset_deassert(struct reset_controller_dev *rc_dev,
+				 unsigned long idx)
+{
+	struct hi6220_reset_data *data = to_reset_data(rc_dev);
+
+	int bank = idx >> 8;
+	int offset = idx & 0xff;
+
+	writel(BIT(offset), data->deassert_base + (bank * 0x10));
+
+	return 0;
+}
+
+static struct reset_control_ops hi6220_reset_ops = {
+	.assert = hi6220_reset_assert,
+	.deassert = hi6220_reset_deassert,
+};
+
+static int hi6220_reset_probe(struct platform_device *pdev)
+{
+	struct hi6220_reset_data *data;
+	struct resource *res;
+	void __iomem *src_base;
+
+	data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
+	if (!data)
+		return -ENOMEM;
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	src_base = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(src_base))
+		return PTR_ERR(src_base);
+
+	data->assert_base = src_base + ASSERT_OFFSET;
+	data->deassert_base = src_base + DEASSERT_OFFSET;
+	data->rc_dev.nr_resets = MAX_INDEX;
+	data->rc_dev.ops = &hi6220_reset_ops;
+	data->rc_dev.of_node = pdev->dev.of_node;
+
+	reset_controller_register(&data->rc_dev);
+
+	return 0;
+}
+
+static const struct of_device_id hi6220_reset_match[] = {
+	{ .compatible = "hisilicon,hi6220-reset-ctl" },
+	{ },
+};
+
+static struct platform_driver hi6220_reset_driver = {
+	.probe = hi6220_reset_probe,
+	.driver = {
+		.name = "reset-hi6220",
+		.of_match_table = hi6220_reset_match,
+	},
+};
+
+static int __init hi6220_reset_init(void)
+{
+	return platform_driver_register(&hi6220_reset_driver);
+}
+
+postcore_initcall(hi6220_reset_init);
diff --git a/include/dt-bindings/reset/hisi,hi6220-resets.h b/include/dt-bindings/reset/hisi,hi6220-resets.h
new file mode 100644
index 0000000..ca08a7e
--- /dev/null
+++ b/include/dt-bindings/reset/hisi,hi6220-resets.h
@@ -0,0 +1,67 @@ 
+/**
+ * This header provides index for the reset controller
+ * based on hi6220 SoC.
+ */
+#ifndef _DT_BINDINGS_RESET_CONTROLLER_HI6220
+#define _DT_BINDINGS_RESET_CONTROLLER_HI6220
+
+#define PERIPH_RSTDIS0_MMC0             0x000
+#define PERIPH_RSTDIS0_MMC1             0x001
+#define PERIPH_RSTDIS0_MMC2             0x002
+#define PERIPH_RSTDIS0_NANDC            0x003
+#define PERIPH_RSTDIS0_USBOTG_BUS       0x004
+#define PERIPH_RSTDIS0_POR_PICOPHY      0x005
+#define PERIPH_RSTDIS0_USBOTG           0x006
+#define PERIPH_RSTDIS0_USBOTG_32K       0x007
+#define PERIPH_RSTDIS1_HIFI             0x100
+#define PERIPH_RSTDIS1_DIGACODEC        0x105
+#define PERIPH_RSTEN2_IPF               0x200
+#define PERIPH_RSTEN2_SOCP              0x201
+#define PERIPH_RSTEN2_DMAC              0x202
+#define PERIPH_RSTEN2_SECENG            0x203
+#define PERIPH_RSTEN2_ABB               0x204
+#define PERIPH_RSTEN2_HPM0              0x205
+#define PERIPH_RSTEN2_HPM1              0x206
+#define PERIPH_RSTEN2_HPM2              0x207
+#define PERIPH_RSTEN2_HPM3              0x208
+#define PERIPH_RSTEN3_CSSYS             0x300
+#define PERIPH_RSTEN3_I2C0              0x301
+#define PERIPH_RSTEN3_I2C1              0x302
+#define PERIPH_RSTEN3_I2C2              0x303
+#define PERIPH_RSTEN3_I2C3              0x304
+#define PERIPH_RSTEN3_UART1             0x305
+#define PERIPH_RSTEN3_UART2             0x306
+#define PERIPH_RSTEN3_UART3             0x307
+#define PERIPH_RSTEN3_UART4             0x308
+#define PERIPH_RSTEN3_SSP               0x309
+#define PERIPH_RSTEN3_PWM               0x30a
+#define PERIPH_RSTEN3_BLPWM             0x30b
+#define PERIPH_RSTEN3_TSENSOR           0x30c
+#define PERIPH_RSTEN3_DAPB              0x312
+#define PERIPH_RSTEN3_HKADC             0x313
+#define PERIPH_RSTEN3_CODEC_SSI         0x314
+#define PERIPH_RSTEN3_PMUSSI1           0x316
+#define PERIPH_RSTEN8_RS0               0x400
+#define PERIPH_RSTEN8_RS2               0x401
+#define PERIPH_RSTEN8_RS3               0x402
+#define PERIPH_RSTEN8_MS0               0x403
+#define PERIPH_RSTEN8_MS2               0x405
+#define PERIPH_RSTEN8_XG2RAM0           0x406
+#define PERIPH_RSTEN8_X2SRAM_TZMA       0x407
+#define PERIPH_RSTEN8_SRAM              0x408
+#define PERIPH_RSTEN8_HARQ              0x40a
+#define PERIPH_RSTEN8_DDRC              0x40c
+#define PERIPH_RSTEN8_DDRC_APB          0x40d
+#define PERIPH_RSTEN8_DDRPACK_APB       0x40e
+#define PERIPH_RSTEN8_DDRT              0x411
+#define PERIPH_RSDIST9_CARM_DAP         0x500
+#define PERIPH_RSDIST9_CARM_ATB         0x501
+#define PERIPH_RSDIST9_CARM_LBUS        0x502
+#define PERIPH_RSDIST9_CARM_POR         0x503
+#define PERIPH_RSDIST9_CARM_CORE        0x504
+#define PERIPH_RSDIST9_CARM_DBG         0x505
+#define PERIPH_RSDIST9_CARM_L2          0x506
+#define PERIPH_RSDIST9_CARM_SOCDBG      0x507
+#define PERIPH_RSDIST9_CARM_ETM         0x508
+
+#endif /*_DT_BINDINGS_RESET_CONTROLLER_HI6220*/