blob: 21e7da40f049c2824c289b9da1e41913620fc458 [file] [log] [blame]
/*
* 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);
}
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);
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;
}