[Feature]add MT2731_MP2_MR2_SVN388 baseline version
Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/kernel/linux/v4.14/drivers/media/rc/zx-irdec.c b/src/kernel/linux/v4.14/drivers/media/rc/zx-irdec.c
new file mode 100644
index 0000000..12d322e
--- /dev/null
+++ b/src/kernel/linux/v4.14/drivers/media/rc/zx-irdec.c
@@ -0,0 +1,184 @@
+/*
+ * Copyright (C) 2017 Sanechips Technology Co., Ltd.
+ * Copyright 2017 Linaro Ltd.
+ *
+ * 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/device.h>
+#include <linux/err.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/module.h>
+#include <linux/of_platform.h>
+#include <linux/platform_device.h>
+
+#include <media/rc-core.h>
+
+#define DRIVER_NAME "zx-irdec"
+
+#define ZX_IR_ENABLE 0x04
+#define ZX_IREN BIT(0)
+#define ZX_IR_CTRL 0x08
+#define ZX_DEGL_MASK GENMASK(21, 20)
+#define ZX_DEGL_VALUE(x) (((x) << 20) & ZX_DEGL_MASK)
+#define ZX_WDBEGIN_MASK GENMASK(18, 8)
+#define ZX_WDBEGIN_VALUE(x) (((x) << 8) & ZX_WDBEGIN_MASK)
+#define ZX_IR_INTEN 0x10
+#define ZX_IR_INTSTCLR 0x14
+#define ZX_IR_CODE 0x30
+#define ZX_IR_CNUM 0x34
+#define ZX_NECRPT BIT(16)
+
+struct zx_irdec {
+ void __iomem *base;
+ struct rc_dev *rcd;
+};
+
+static void zx_irdec_set_mask(struct zx_irdec *irdec, unsigned int reg,
+ u32 mask, u32 value)
+{
+ u32 data;
+
+ data = readl(irdec->base + reg);
+ data &= ~mask;
+ data |= value & mask;
+ writel(data, irdec->base + reg);
+}
+
+static irqreturn_t zx_irdec_irq(int irq, void *dev_id)
+{
+ struct zx_irdec *irdec = dev_id;
+ u8 address, not_address;
+ u8 command, not_command;
+ u32 rawcode, scancode;
+ enum rc_proto rc_proto;
+
+ /* Clear interrupt */
+ writel(1, irdec->base + ZX_IR_INTSTCLR);
+
+ /* Check repeat frame */
+ if (readl(irdec->base + ZX_IR_CNUM) & ZX_NECRPT) {
+ rc_repeat(irdec->rcd);
+ goto done;
+ }
+
+ rawcode = readl(irdec->base + ZX_IR_CODE);
+ not_command = (rawcode >> 24) & 0xff;
+ command = (rawcode >> 16) & 0xff;
+ not_address = (rawcode >> 8) & 0xff;
+ address = rawcode & 0xff;
+
+ scancode = ir_nec_bytes_to_scancode(address, not_address,
+ command, not_command,
+ &rc_proto);
+ rc_keydown(irdec->rcd, rc_proto, scancode, 0);
+
+done:
+ return IRQ_HANDLED;
+}
+
+static int zx_irdec_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct zx_irdec *irdec;
+ struct resource *res;
+ struct rc_dev *rcd;
+ int irq;
+ int ret;
+
+ irdec = devm_kzalloc(dev, sizeof(*irdec), GFP_KERNEL);
+ if (!irdec)
+ return -ENOMEM;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ irdec->base = devm_ioremap_resource(dev, res);
+ if (IS_ERR(irdec->base))
+ return PTR_ERR(irdec->base);
+
+ irq = platform_get_irq(pdev, 0);
+ if (irq < 0)
+ return irq;
+
+ rcd = devm_rc_allocate_device(dev, RC_DRIVER_SCANCODE);
+ if (!rcd) {
+ dev_err(dev, "failed to allocate rc device\n");
+ return -ENOMEM;
+ }
+
+ irdec->rcd = rcd;
+
+ rcd->priv = irdec;
+ rcd->input_phys = DRIVER_NAME "/input0";
+ rcd->input_id.bustype = BUS_HOST;
+ rcd->map_name = RC_MAP_ZX_IRDEC;
+ rcd->allowed_protocols = RC_PROTO_BIT_NEC | RC_PROTO_BIT_NECX |
+ RC_PROTO_BIT_NEC32;
+ rcd->driver_name = DRIVER_NAME;
+ rcd->device_name = DRIVER_NAME;
+
+ platform_set_drvdata(pdev, irdec);
+
+ ret = devm_rc_register_device(dev, rcd);
+ if (ret) {
+ dev_err(dev, "failed to register rc device\n");
+ return ret;
+ }
+
+ ret = devm_request_irq(dev, irq, zx_irdec_irq, 0, NULL, irdec);
+ if (ret) {
+ dev_err(dev, "failed to request irq\n");
+ return ret;
+ }
+
+ /*
+ * Initialize deglitch level and watchdog counter beginner as
+ * recommended by vendor BSP code.
+ */
+ zx_irdec_set_mask(irdec, ZX_IR_CTRL, ZX_DEGL_MASK, ZX_DEGL_VALUE(0));
+ zx_irdec_set_mask(irdec, ZX_IR_CTRL, ZX_WDBEGIN_MASK,
+ ZX_WDBEGIN_VALUE(0x21c));
+
+ /* Enable interrupt */
+ writel(1, irdec->base + ZX_IR_INTEN);
+
+ /* Enable the decoder */
+ zx_irdec_set_mask(irdec, ZX_IR_ENABLE, ZX_IREN, ZX_IREN);
+
+ return 0;
+}
+
+static int zx_irdec_remove(struct platform_device *pdev)
+{
+ struct zx_irdec *irdec = platform_get_drvdata(pdev);
+
+ /* Disable the decoder */
+ zx_irdec_set_mask(irdec, ZX_IR_ENABLE, ZX_IREN, 0);
+
+ /* Disable interrupt */
+ writel(0, irdec->base + ZX_IR_INTEN);
+
+ return 0;
+}
+
+static const struct of_device_id zx_irdec_match[] = {
+ { .compatible = "zte,zx296718-irdec" },
+ { },
+};
+MODULE_DEVICE_TABLE(of, zx_irdec_match);
+
+static struct platform_driver zx_irdec_driver = {
+ .probe = zx_irdec_probe,
+ .remove = zx_irdec_remove,
+ .driver = {
+ .name = DRIVER_NAME,
+ .of_match_table = zx_irdec_match,
+ },
+};
+module_platform_driver(zx_irdec_driver);
+
+MODULE_DESCRIPTION("ZTE ZX IR remote control driver");
+MODULE_AUTHOR("Shawn Guo <shawn.guo@linaro.org>");
+MODULE_LICENSE("GPL v2");