[Feature]add MT2731_MP2_MR2_SVN388 baseline version
Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/kernel/linux/v4.14/drivers/input/serio/rpckbd.c b/src/kernel/linux/v4.14/drivers/input/serio/rpckbd.c
new file mode 100644
index 0000000..8cf9647
--- /dev/null
+++ b/src/kernel/linux/v4.14/drivers/input/serio/rpckbd.c
@@ -0,0 +1,173 @@
+/*
+ * Copyright (c) 2000-2001 Vojtech Pavlik
+ * Copyright (c) 2002 Russell King
+ */
+
+/*
+ * Acorn RiscPC PS/2 keyboard controller driver for Linux/ARM
+ */
+
+/*
+ * 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, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * Should you need to contact me, the author, you can do so either by
+ * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
+ * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
+ */
+
+#include <linux/module.h>
+#include <linux/interrupt.h>
+#include <linux/serio.h>
+#include <linux/err.h>
+#include <linux/platform_device.h>
+#include <linux/io.h>
+#include <linux/slab.h>
+
+#include <mach/hardware.h>
+#include <asm/hardware/iomd.h>
+
+MODULE_AUTHOR("Vojtech Pavlik, Russell King");
+MODULE_DESCRIPTION("Acorn RiscPC PS/2 keyboard controller driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:kart");
+
+struct rpckbd_data {
+ int tx_irq;
+ int rx_irq;
+};
+
+static int rpckbd_write(struct serio *port, unsigned char val)
+{
+ while (!(iomd_readb(IOMD_KCTRL) & (1 << 7)))
+ cpu_relax();
+
+ iomd_writeb(val, IOMD_KARTTX);
+
+ return 0;
+}
+
+static irqreturn_t rpckbd_rx(int irq, void *dev_id)
+{
+ struct serio *port = dev_id;
+ unsigned int byte;
+ int handled = IRQ_NONE;
+
+ while (iomd_readb(IOMD_KCTRL) & (1 << 5)) {
+ byte = iomd_readb(IOMD_KARTRX);
+
+ serio_interrupt(port, byte, 0);
+ handled = IRQ_HANDLED;
+ }
+ return handled;
+}
+
+static irqreturn_t rpckbd_tx(int irq, void *dev_id)
+{
+ return IRQ_HANDLED;
+}
+
+static int rpckbd_open(struct serio *port)
+{
+ struct rpckbd_data *rpckbd = port->port_data;
+
+ /* Reset the keyboard state machine. */
+ iomd_writeb(0, IOMD_KCTRL);
+ iomd_writeb(8, IOMD_KCTRL);
+ iomd_readb(IOMD_KARTRX);
+
+ if (request_irq(rpckbd->rx_irq, rpckbd_rx, 0, "rpckbd", port) != 0) {
+ printk(KERN_ERR "rpckbd.c: Could not allocate keyboard receive IRQ\n");
+ return -EBUSY;
+ }
+
+ if (request_irq(rpckbd->tx_irq, rpckbd_tx, 0, "rpckbd", port) != 0) {
+ printk(KERN_ERR "rpckbd.c: Could not allocate keyboard transmit IRQ\n");
+ free_irq(rpckbd->rx_irq, port);
+ return -EBUSY;
+ }
+
+ return 0;
+}
+
+static void rpckbd_close(struct serio *port)
+{
+ struct rpckbd_data *rpckbd = port->port_data;
+
+ free_irq(rpckbd->rx_irq, port);
+ free_irq(rpckbd->tx_irq, port);
+}
+
+/*
+ * Allocate and initialize serio structure for subsequent registration
+ * with serio core.
+ */
+static int rpckbd_probe(struct platform_device *dev)
+{
+ struct rpckbd_data *rpckbd;
+ struct serio *serio;
+ int tx_irq, rx_irq;
+
+ rx_irq = platform_get_irq(dev, 0);
+ if (rx_irq <= 0)
+ return rx_irq < 0 ? rx_irq : -ENXIO;
+
+ tx_irq = platform_get_irq(dev, 1);
+ if (tx_irq <= 0)
+ return tx_irq < 0 ? tx_irq : -ENXIO;
+
+ serio = kzalloc(sizeof(struct serio), GFP_KERNEL);
+ rpckbd = kzalloc(sizeof(*rpckbd), GFP_KERNEL);
+ if (!serio || !rpckbd) {
+ kfree(rpckbd);
+ kfree(serio);
+ return -ENOMEM;
+ }
+
+ rpckbd->rx_irq = rx_irq;
+ rpckbd->tx_irq = tx_irq;
+
+ serio->id.type = SERIO_8042;
+ serio->write = rpckbd_write;
+ serio->open = rpckbd_open;
+ serio->close = rpckbd_close;
+ serio->dev.parent = &dev->dev;
+ serio->port_data = rpckbd;
+ strlcpy(serio->name, "RiscPC PS/2 kbd port", sizeof(serio->name));
+ strlcpy(serio->phys, "rpckbd/serio0", sizeof(serio->phys));
+
+ platform_set_drvdata(dev, serio);
+ serio_register_port(serio);
+ return 0;
+}
+
+static int rpckbd_remove(struct platform_device *dev)
+{
+ struct serio *serio = platform_get_drvdata(dev);
+ struct rpckbd_data *rpckbd = serio->port_data;
+
+ serio_unregister_port(serio);
+ kfree(rpckbd);
+
+ return 0;
+}
+
+static struct platform_driver rpckbd_driver = {
+ .probe = rpckbd_probe,
+ .remove = rpckbd_remove,
+ .driver = {
+ .name = "kart",
+ },
+};
+module_platform_driver(rpckbd_driver);