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path: root/drivers/media/video/tm6000/tm6000-input.c
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-rw-r--r--drivers/media/video/tm6000/tm6000-input.c459
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;
+}
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