1 files changed, 459 insertions, 0 deletions

diff --git a/drivers/media/video/tm6000/tm6000-input.c b/drivers/media/video/tm6000/tm6000-input.c
new file mode 100644
index 000000000000..405d12729d05
--- /dev/null
+++ b/drivers/media/video/tm6000/tm6000-input.c
@@ -0,0 +1,459 @@
+/*
+ *  tm6000-input.c - driver for TM5600/TM6000/TM6010 USB video capture devices
+ *
+ *  Copyright (C) 2010 Stefan Ringel <stefan.ringel@arcor.de>
+ *
+ *  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 version 2
+ *
+ *  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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+
+#include <linux/input.h>
+#include <linux/usb.h>
+
+#include <media/rc-core.h>
+
+#include "tm6000.h"
+#include "tm6000-regs.h"
+
+static unsigned int ir_debug;
+module_param(ir_debug, int, 0644);
+MODULE_PARM_DESC(ir_debug, "enable debug message [IR]");
+
+static unsigned int enable_ir = 1;
+module_param(enable_ir, int, 0644);
+MODULE_PARM_DESC(enable_ir, "enable ir (default is enable)");
+
+/* number of 50ms for ON-OFF-ON power led */
+/* show IR activity */
+#define PWLED_OFF 2
+
+#undef dprintk
+
+#define dprintk(fmt, arg...) \
+	if (ir_debug) { \
+		printk(KERN_DEBUG "%s/ir: " fmt, ir->name , ## arg); \
+	}
+
+struct tm6000_ir_poll_result {
+	u16 rc_data;
+};
+
+struct tm6000_IR {
+	struct tm6000_core	*dev;
+	struct rc_dev		*rc;
+	char			name[32];
+	char			phys[32];
+
+	/* poll expernal decoder */
+	int			polling;
+	struct delayed_work	work;
+	u8			wait:1;
+	u8			key:1;
+	u8			pwled:1;
+	u8			pwledcnt;
+	u16			key_addr;
+	struct urb		*int_urb;
+	u8			*urb_data;
+
+	int (*get_key) (struct tm6000_IR *, struct tm6000_ir_poll_result *);
+
+	/* IR device properties */
+	u64			rc_type;
+};
+
+
+void tm6000_ir_wait(struct tm6000_core *dev, u8 state)
+{
+	struct tm6000_IR *ir = dev->ir;
+
+	if (!dev->ir)
+		return;
+
+	if (state)
+		ir->wait = 1;
+	else
+		ir->wait = 0;
+}
+
+
+static int tm6000_ir_config(struct tm6000_IR *ir)
+{
+	struct tm6000_core *dev = ir->dev;
+	u8 buf[10];
+	int rc;
+
+	switch (ir->rc_type) {
+	case RC_TYPE_NEC:
+		/* Setup IR decoder for NEC standard 12MHz system clock */
+		/* IR_LEADER_CNT = 0.9ms             */
+		tm6000_set_reg(dev, TM6010_REQ07_RD8_IR_LEADER1, 0xaa);
+		tm6000_set_reg(dev, TM6010_REQ07_RD8_IR_LEADER0, 0x30);
+		/* IR_PULSE_CNT = 0.7ms              */
+		tm6000_set_reg(dev, TM6010_REQ07_RD8_IR_PULSE_CNT1, 0x20);
+		tm6000_set_reg(dev, TM6010_REQ07_RD8_IR_PULSE_CNT0, 0xd0);
+		/* Remote WAKEUP = enable */
+		tm6000_set_reg(dev, TM6010_REQ07_RE5_REMOTE_WAKEUP, 0xfe);
+		/* IR_WKUP_SEL = Low byte in decoded IR data */
+		tm6000_set_reg(dev, TM6010_REQ07_RD8_IR_WAKEUP_SEL, 0xff);
+		/* IR_WKU_ADD code */
+		tm6000_set_reg(dev, TM6010_REQ07_RD8_IR_WAKEUP_ADD, 0xff);
+		tm6000_flash_led(dev, 0);
+		msleep(100);
+		tm6000_flash_led(dev, 1);
+		break;
+	default:
+		/* hack */
+		buf[0] = 0xff;
+		buf[1] = 0xff;
+		buf[2] = 0xf2;
+		buf[3] = 0x2b;
+		buf[4] = 0x20;
+		buf[5] = 0x35;
+		buf[6] = 0x60;
+		buf[7] = 0x04;
+		buf[8] = 0xc0;
+		buf[9] = 0x08;
+
+		rc = tm6000_read_write_usb(dev, USB_DIR_OUT | USB_TYPE_VENDOR |
+			USB_RECIP_DEVICE, REQ_00_SET_IR_VALUE, 0, 0, buf, 0x0a);
+		msleep(100);
+
+		if (rc < 0) {
+			printk(KERN_INFO "IR configuration failed");
+			return rc;
+		}
+		break;
+	}
+
+	return 0;
+}
+
+static void tm6000_ir_urb_received(struct urb *urb)
+{
+	struct tm6000_core *dev = urb->context;
+	struct tm6000_IR *ir = dev->ir;
+	int rc;
+
+	if (urb->status != 0)
+		printk(KERN_INFO "not ready\n");
+	else if (urb->actual_length > 0) {
+		memcpy(ir->urb_data, urb->transfer_buffer, urb->actual_length);
+
+		dprintk("data %02x %02x %02x %02x\n", ir->urb_data[0],
+			ir->urb_data[1], ir->urb_data[2], ir->urb_data[3]);
+
+		ir->key = 1;
+	}
+
+	rc = usb_submit_urb(urb, GFP_ATOMIC);
+}
+
+static int default_polling_getkey(struct tm6000_IR *ir,
+				struct tm6000_ir_poll_result *poll_result)
+{
+	struct tm6000_core *dev = ir->dev;
+	int rc;
+	u8 buf[2];
+
+	if (ir->wait && !&dev->int_in)
+		return 0;
+
+	if (&dev->int_in) {
+		switch (ir->rc_type) {
+		case RC_TYPE_RC5:
+			poll_result->rc_data = ir->urb_data[0];
+			break;
+		case RC_TYPE_NEC:
+			if (ir->urb_data[1] == ((ir->key_addr >> 8) & 0xff)) {
+				poll_result->rc_data = ir->urb_data[0]
+							| ir->urb_data[1] << 8;
+			}
+			break;
+		default:
+			poll_result->rc_data = ir->urb_data[0]
+					| ir->urb_data[1] << 8;
+			break;
+		}
+	} else {
+		tm6000_set_reg(dev, REQ_04_EN_DISABLE_MCU_INT, 2, 0);
+		msleep(10);
+		tm6000_set_reg(dev, REQ_04_EN_DISABLE_MCU_INT, 2, 1);
+		msleep(10);
+
+		if (ir->rc_type == RC_TYPE_RC5) {
+			rc = tm6000_read_write_usb(dev, USB_DIR_IN |
+				USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+				REQ_02_GET_IR_CODE, 0, 0, buf, 1);
+
+			msleep(10);
+
+			dprintk("read data=%02x\n", buf[0]);
+			if (rc < 0)
+				return rc;
+
+			poll_result->rc_data = buf[0];
+		} else {
+			rc = tm6000_read_write_usb(dev, USB_DIR_IN |
+				USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+				REQ_02_GET_IR_CODE, 0, 0, buf, 2);
+
+			msleep(10);
+
+			dprintk("read data=%04x\n", buf[0] | buf[1] << 8);
+			if (rc < 0)
+				return rc;
+
+			poll_result->rc_data = buf[0] | buf[1] << 8;
+		}
+		if ((poll_result->rc_data & 0x00ff) != 0xff)
+			ir->key = 1;
+	}
+	return 0;
+}
+
+static void tm6000_ir_handle_key(struct tm6000_IR *ir)
+{
+	struct tm6000_core *dev = ir->dev;
+	int result;
+	struct tm6000_ir_poll_result poll_result;
+
+	/* read the registers containing the IR status */
+	result = ir->get_key(ir, &poll_result);
+	if (result < 0) {
+		printk(KERN_INFO "ir->get_key() failed %d\n", result);
+		return;
+	}
+
+	dprintk("ir->get_key result data=%04x\n", poll_result.rc_data);
+
+	if (ir->pwled) {
+		if (ir->pwledcnt >= PWLED_OFF) {
+			ir->pwled = 0;
+			ir->pwledcnt = 0;
+			tm6000_flash_led(dev, 1);
+		} else
+			ir->pwledcnt += 1;
+	}
+
+	if (ir->key) {
+		rc_keydown(ir->rc, poll_result.rc_data, 0);
+		ir->key = 0;
+		ir->pwled = 1;
+		ir->pwledcnt = 0;
+		tm6000_flash_led(dev, 0);
+	}
+	return;
+}
+
+static void tm6000_ir_work(struct work_struct *work)
+{
+	struct tm6000_IR *ir = container_of(work, struct tm6000_IR, work.work);
+
+	tm6000_ir_handle_key(ir);
+	schedule_delayed_work(&ir->work, msecs_to_jiffies(ir->polling));
+}
+
+static int tm6000_ir_start(struct rc_dev *rc)
+{
+	struct tm6000_IR *ir = rc->priv;
+
+	INIT_DELAYED_WORK(&ir->work, tm6000_ir_work);
+	schedule_delayed_work(&ir->work, 0);
+
+	return 0;
+}
+
+static void tm6000_ir_stop(struct rc_dev *rc)
+{
+	struct tm6000_IR *ir = rc->priv;
+
+	cancel_delayed_work_sync(&ir->work);
+}
+
+static int tm6000_ir_change_protocol(struct rc_dev *rc, u64 rc_type)
+{
+	struct tm6000_IR *ir = rc->priv;
+
+	if (!ir)
+		return 0;
+
+	if ((rc->rc_map.scan) && (rc_type == RC_TYPE_NEC))
+		ir->key_addr = ((rc->rc_map.scan[0].scancode >> 8) & 0xffff);
+
+	ir->get_key = default_polling_getkey;
+	ir->rc_type = rc_type;
+
+	tm6000_ir_config(ir);
+	/* TODO */
+	return 0;
+}
+
+int tm6000_ir_int_start(struct tm6000_core *dev)
+{
+	struct tm6000_IR *ir = dev->ir;
+	int pipe, size;
+	int err = -ENOMEM;
+
+
+	if (!ir)
+		return -ENODEV;
+
+	ir->int_urb = usb_alloc_urb(0, GFP_KERNEL);
+	if (!ir->int_urb)
+		return -ENOMEM;
+
+	pipe = usb_rcvintpipe(dev->udev,
+		dev->int_in.endp->desc.bEndpointAddress
+		& USB_ENDPOINT_NUMBER_MASK);
+
+	size = usb_maxpacket(dev->udev, pipe, usb_pipeout(pipe));
+	dprintk("IR max size: %d\n", size);
+
+	ir->int_urb->transfer_buffer = kzalloc(size, GFP_KERNEL);
+	if (ir->int_urb->transfer_buffer == NULL) {
+		usb_free_urb(ir->int_urb);
+		return err;
+	}
+	dprintk("int interval: %d\n", dev->int_in.endp->desc.bInterval);
+	usb_fill_int_urb(ir->int_urb, dev->udev, pipe,
+		ir->int_urb->transfer_buffer, size,
+		tm6000_ir_urb_received, dev,
+		dev->int_in.endp->desc.bInterval);
+	err = usb_submit_urb(ir->int_urb, GFP_KERNEL);
+	if (err) {
+		kfree(ir->int_urb->transfer_buffer);
+		usb_free_urb(ir->int_urb);
+		return err;
+	}
+	ir->urb_data = kzalloc(size, GFP_KERNEL);
+
+	return 0;
+}
+
+void tm6000_ir_int_stop(struct tm6000_core *dev)
+{
+	struct tm6000_IR *ir = dev->ir;
+
+	if (!ir)
+		return;
+
+	usb_kill_urb(ir->int_urb);
+	kfree(ir->int_urb->transfer_buffer);
+	usb_free_urb(ir->int_urb);
+	ir->int_urb = NULL;
+	kfree(ir->urb_data);
+	ir->urb_data = NULL;
+}
+
+int tm6000_ir_init(struct tm6000_core *dev)
+{
+	struct tm6000_IR *ir;
+	struct rc_dev *rc;
+	int err = -ENOMEM;
+
+	if (!enable_ir)
+		return -ENODEV;
+
+	if (!dev->caps.has_remote)
+		return 0;
+
+	if (!dev->ir_codes)
+		return 0;
+
+	ir = kzalloc(sizeof(*ir), GFP_KERNEL);
+	rc = rc_allocate_device();
+	if (!ir || !rc)
+		goto out;
+
+	/* record handles to ourself */
+	ir->dev = dev;
+	dev->ir = ir;
+	ir->rc = rc;
+
+	/* input einrichten */
+	rc->allowed_protos = RC_TYPE_RC5 | RC_TYPE_NEC;
+	rc->priv = ir;
+	rc->change_protocol = tm6000_ir_change_protocol;
+	rc->open = tm6000_ir_start;
+	rc->close = tm6000_ir_stop;
+	rc->driver_type = RC_DRIVER_SCANCODE;
+
+	ir->polling = 50;
+	ir->pwled = 0;
+	ir->pwledcnt = 0;
+
+
+	snprintf(ir->name, sizeof(ir->name), "tm5600/60x0 IR (%s)",
+						dev->name);
+
+	usb_make_path(dev->udev, ir->phys, sizeof(ir->phys));
+	strlcat(ir->phys, "/input0", sizeof(ir->phys));
+
+	tm6000_ir_change_protocol(rc, RC_TYPE_UNKNOWN);
+
+	rc->input_name = ir->name;
+	rc->input_phys = ir->phys;
+	rc->input_id.bustype = BUS_USB;
+	rc->input_id.version = 1;
+	rc->input_id.vendor = le16_to_cpu(dev->udev->descriptor.idVendor);
+	rc->input_id.product = le16_to_cpu(dev->udev->descriptor.idProduct);
+	rc->map_name = dev->ir_codes;
+	rc->driver_name = "tm6000";
+	rc->dev.parent = &dev->udev->dev;
+
+	if (&dev->int_in) {
+		dprintk("IR over int\n");
+
+		err = tm6000_ir_int_start(dev);
+
+		if (err)
+			goto out;
+	}
+
+	/* ir register */
+	err = rc_register_device(rc);
+	if (err)
+		goto out;
+
+	return 0;
+
+out:
+	dev->ir = NULL;
+	rc_free_device(rc);
+	kfree(ir);
+	return err;
+}
+
+int tm6000_ir_fini(struct tm6000_core *dev)
+{
+	struct tm6000_IR *ir = dev->ir;
+
+	/* skip detach on non attached board */
+
+	if (!ir)
+		return 0;
+
+	rc_unregister_device(ir->rc);
+
+	if (ir->int_urb)
+		tm6000_ir_int_stop(dev);
+
+	kfree(ir);
+	dev->ir = NULL;
+
+	return 0;
+}