[PATCH v2 3/5] irqchip: add platform device driver for mbigen device

From: MaJun
Date: Tue Feb 16 2016 - 01:39:44 EST


From: Ma Jun <majun258@xxxxxxxxxx>

Add the platform device driver for mbigen chip v1.
This patch just same as mbigen v2.

Signed-off-by: Ma Jun <majun258@xxxxxxxxxx>
---
drivers/irqchip/Makefile | 2 +-
drivers/irqchip/irq-mbigen-v1.c | 76 +++++++++++++++++++++++++++++++++++++++
2 files changed, 77 insertions(+), 1 deletions(-)
create mode 100644 drivers/irqchip/irq-mbigen-v1.c

diff --git a/drivers/irqchip/Makefile b/drivers/irqchip/Makefile
index d91d99d..d4b9c7f 100644
--- a/drivers/irqchip/Makefile
+++ b/drivers/irqchip/Makefile
@@ -25,7 +25,7 @@ obj-$(CONFIG_REALVIEW_DT) += irq-gic-realview.o
obj-$(CONFIG_ARM_GIC_V2M) += irq-gic-v2m.o
obj-$(CONFIG_ARM_GIC_V3) += irq-gic-v3.o irq-gic-common.o
obj-$(CONFIG_ARM_GIC_V3_ITS) += irq-gic-v3-its.o irq-gic-v3-its-pci-msi.o irq-gic-v3-its-platform-msi.o
-obj-$(CONFIG_HISILICON_IRQ_MBIGEN) += irq-mbigen.o
+obj-$(CONFIG_HISILICON_IRQ_MBIGEN) += irq-mbigen.o irq-mbigen-v1.o
obj-$(CONFIG_ARM_NVIC) += irq-nvic.o
obj-$(CONFIG_ARM_VIC) += irq-vic.o
obj-$(CONFIG_ATMEL_AIC_IRQ) += irq-atmel-aic-common.o irq-atmel-aic.o
diff --git a/drivers/irqchip/irq-mbigen-v1.c b/drivers/irqchip/irq-mbigen-v1.c
new file mode 100644
index 0000000..9445658
--- /dev/null
+++ b/drivers/irqchip/irq-mbigen-v1.c
@@ -0,0 +1,76 @@
+/*
+ * Copyright (C) 2015 Hisilicon Limited, All Rights Reserved.
+ * Author: Jun Ma <majun258@xxxxxxxxxx>
+ * Author: Yun Wu <wuyun.wu@xxxxxxxxxx>
+ *
+ * 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.
+ *
+ * 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/module.h>
+#include <linux/of_platform.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+
+/**
+ * struct mbigen_device - holds the information of mbigen device.
+ *
+ * @pdev: pointer to the platform device structure of mbigen chip.
+ * @base: mapped address of this mbigen chip.
+ */
+struct mbigen_device {
+ struct platform_device *pdev;
+ void __iomem *base;
+};
+
+static int mbigen_device_probe(struct platform_device *pdev)
+{
+ struct mbigen_device *mgn_chip;
+ struct resource *res;
+
+ mgn_chip = devm_kzalloc(&pdev->dev, sizeof(*mgn_chip), GFP_KERNEL);
+ if (!mgn_chip)
+ return -ENOMEM;
+
+ mgn_chip->pdev = pdev;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ mgn_chip->base = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(mgn_chip->base))
+ return PTR_ERR(mgn_chip->base);
+
+ platform_set_drvdata(pdev, mgn_chip);
+
+ return 0;
+}
+
+static const struct of_device_id mbigen_of_match[] = {
+ { .compatible = "hisilicon,mbigen-v1" },
+ { /* END */ }
+};
+MODULE_DEVICE_TABLE(of, mbigen_of_match);
+
+static struct platform_driver mbigen_platform_driver = {
+ .driver = {
+ .name = "Hisilicon MBIGEN-V1",
+ .owner = THIS_MODULE,
+ .of_match_table = mbigen_of_match,
+ },
+ .probe = mbigen_device_probe,
+};
+
+module_platform_driver(mbigen_platform_driver);
+
+MODULE_AUTHOR("Jun Ma <majun258@xxxxxxxxxx>");
+MODULE_AUTHOR("Yun Wu <wuyun.wu@xxxxxxxxxx>");
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("Hisilicon MBI Generator driver");
--
1.7.1