diff options
Diffstat (limited to 'drivers/media/video/tm6000/tm6000-input.c')
-rw-r--r-- | drivers/media/video/tm6000/tm6000-input.c | 498 |
1 files changed, 0 insertions, 498 deletions
diff --git a/drivers/media/video/tm6000/tm6000-input.c b/drivers/media/video/tm6000/tm6000-input.c deleted file mode 100644 index e80b7e190471..000000000000 --- a/drivers/media/video/tm6000/tm6000-input.c +++ /dev/null @@ -1,498 +0,0 @@ -/* - * 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, "debug message level"); - -static unsigned int enable_ir = 1; -module_param(enable_ir, int, 0644); -MODULE_PARM_DESC(enable_ir, "enable ir (default is enable)"); - -static unsigned int ir_clock_mhz = 12; -module_param(ir_clock_mhz, int, 0644); -MODULE_PARM_DESC(enable_ir, "ir clock, in MHz"); - -#define URB_SUBMIT_DELAY 100 /* ms - Delay to submit an URB request on retrial and init */ -#define URB_INT_LED_DELAY 100 /* ms - Delay to turn led on again on int mode */ - -#undef dprintk - -#define dprintk(level, fmt, arg...) do {\ - if (ir_debug >= level) \ - printk(KERN_DEBUG "%s/ir: " fmt, ir->name , ## arg); \ - } while (0) - -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 pwled:2; - u8 submit_urb:1; - u16 key_addr; - struct urb *int_urb; - - /* 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; - - dprintk(2, "%s: %i\n",__func__, ir->wait); - - if (state) - ir->wait = 1; - else - ir->wait = 0; -} - -static int tm6000_ir_config(struct tm6000_IR *ir) -{ - struct tm6000_core *dev = ir->dev; - u32 pulse = 0, leader = 0; - - dprintk(2, "%s\n",__func__); - - /* - * The IR decoder supports RC-5 or NEC, with a configurable timing. - * The timing configuration there is not that accurate, as it uses - * approximate values. The NEC spec mentions a 562.5 unit period, - * and RC-5 uses a 888.8 period. - * Currently, driver assumes a clock provided by a 12 MHz XTAL, but - * a modprobe parameter can adjust it. - * Adjustments are required for other timings. - * It seems that the 900ms timing for NEC is used to detect a RC-5 - * IR, in order to discard such decoding - */ - - switch (ir->rc_type) { - case RC_TYPE_NEC: - leader = 900; /* ms */ - pulse = 700; /* ms - the actual value would be 562 */ - break; - default: - case RC_TYPE_RC5: - leader = 900; /* ms - from the NEC decoding */ - pulse = 1780; /* ms - The actual value would be 1776 */ - break; - } - - pulse = ir_clock_mhz * pulse; - leader = ir_clock_mhz * leader; - if (ir->rc_type == RC_TYPE_NEC) - leader = leader | 0x8000; - - dprintk(2, "%s: %s, %d MHz, leader = 0x%04x, pulse = 0x%06x \n", - __func__, - (ir->rc_type == RC_TYPE_NEC) ? "NEC" : "RC-5", - ir_clock_mhz, leader, pulse); - - /* Remote WAKEUP = enable, normal mode, from IR decoder output */ - tm6000_set_reg(dev, TM6010_REQ07_RE5_REMOTE_WAKEUP, 0xfe); - - /* Enable IR reception on non-busrt mode */ - tm6000_set_reg(dev, TM6010_REQ07_RD8_IR, 0x2f); - - /* IR_WKUP_SEL = Low byte in decoded IR data */ - tm6000_set_reg(dev, TM6010_REQ07_RDA_IR_WAKEUP_SEL, 0xff); - /* IR_WKU_ADD code */ - tm6000_set_reg(dev, TM6010_REQ07_RDB_IR_WAKEUP_ADD, 0xff); - - tm6000_set_reg(dev, TM6010_REQ07_RDC_IR_LEADER1, leader >> 8); - tm6000_set_reg(dev, TM6010_REQ07_RDD_IR_LEADER0, leader); - - tm6000_set_reg(dev, TM6010_REQ07_RDE_IR_PULSE_CNT1, pulse >> 8); - tm6000_set_reg(dev, TM6010_REQ07_RDF_IR_PULSE_CNT0, pulse); - - if (!ir->polling) - tm6000_set_reg(dev, REQ_04_EN_DISABLE_MCU_INT, 2, 0); - else - tm6000_set_reg(dev, REQ_04_EN_DISABLE_MCU_INT, 2, 1); - msleep(10); - - /* Shows that IR is working via the LED */ - tm6000_flash_led(dev, 0); - msleep(100); - tm6000_flash_led(dev, 1); - ir->pwled = 1; - - return 0; -} - -static void tm6000_ir_urb_received(struct urb *urb) -{ - struct tm6000_core *dev = urb->context; - struct tm6000_IR *ir = dev->ir; - struct tm6000_ir_poll_result poll_result; - char *buf; - - dprintk(2, "%s\n",__func__); - if (urb->status < 0 || urb->actual_length <= 0) { - printk(KERN_INFO "tm6000: IR URB failure: status: %i, length %i\n", - urb->status, urb->actual_length); - ir->submit_urb = 1; - schedule_delayed_work(&ir->work, msecs_to_jiffies(URB_SUBMIT_DELAY)); - return; - } - buf = urb->transfer_buffer; - - if (ir_debug) - print_hex_dump(KERN_DEBUG, "tm6000: IR data: ", - DUMP_PREFIX_OFFSET,16, 1, - buf, urb->actual_length, false); - - poll_result.rc_data = buf[0]; - if (urb->actual_length > 1) - poll_result.rc_data |= buf[1] << 8; - - dprintk(1, "%s, scancode: 0x%04x\n",__func__, poll_result.rc_data); - rc_keydown(ir->rc, poll_result.rc_data, 0); - - usb_submit_urb(urb, GFP_ATOMIC); - /* - * Flash the led. We can't do it here, as it is running on IRQ context. - * So, use the scheduler to do it, in a few ms. - */ - ir->pwled = 2; - schedule_delayed_work(&ir->work, msecs_to_jiffies(10)); -} - -static void tm6000_ir_handle_key(struct work_struct *work) -{ - struct tm6000_IR *ir = container_of(work, struct tm6000_IR, work.work); - struct tm6000_core *dev = ir->dev; - struct tm6000_ir_poll_result poll_result; - int rc; - u8 buf[2]; - - if (ir->wait) - return; - - dprintk(3, "%s\n",__func__); - - rc = tm6000_read_write_usb(dev, USB_DIR_IN | - USB_TYPE_VENDOR | USB_RECIP_DEVICE, - REQ_02_GET_IR_CODE, 0, 0, buf, 2); - if (rc < 0) - return; - - if (rc > 1) - poll_result.rc_data = buf[0] | buf[1] << 8; - else - poll_result.rc_data = buf[0]; - - /* Check if something was read */ - if ((poll_result.rc_data & 0xff) == 0xff) { - if (!ir->pwled) { - tm6000_flash_led(dev, 1); - ir->pwled = 1; - } - return; - } - - dprintk(1, "%s, scancode: 0x%04x\n",__func__, poll_result.rc_data); - rc_keydown(ir->rc, poll_result.rc_data, 0); - tm6000_flash_led(dev, 0); - ir->pwled = 0; - - /* Re-schedule polling */ - schedule_delayed_work(&ir->work, msecs_to_jiffies(ir->polling)); -} - -static void tm6000_ir_int_work(struct work_struct *work) -{ - struct tm6000_IR *ir = container_of(work, struct tm6000_IR, work.work); - struct tm6000_core *dev = ir->dev; - int rc; - - dprintk(3, "%s, submit_urb = %d, pwled = %d\n",__func__, ir->submit_urb, - ir->pwled); - - if (ir->submit_urb) { - dprintk(3, "Resubmit urb\n"); - tm6000_set_reg(dev, REQ_04_EN_DISABLE_MCU_INT, 2, 0); - - rc = usb_submit_urb(ir->int_urb, GFP_ATOMIC); - if (rc < 0) { - printk(KERN_ERR "tm6000: Can't submit an IR interrupt. Error %i\n", - rc); - /* Retry in 100 ms */ - schedule_delayed_work(&ir->work, msecs_to_jiffies(URB_SUBMIT_DELAY)); - return; - } - ir->submit_urb = 0; - } - - /* Led is enabled only if USB submit doesn't fail */ - if (ir->pwled == 2) { - tm6000_flash_led(dev, 0); - ir->pwled = 0; - schedule_delayed_work(&ir->work, msecs_to_jiffies(URB_INT_LED_DELAY)); - } else if (!ir->pwled) { - tm6000_flash_led(dev, 1); - ir->pwled = 1; - } -} - -static int tm6000_ir_start(struct rc_dev *rc) -{ - struct tm6000_IR *ir = rc->priv; - - dprintk(2, "%s\n",__func__); - - schedule_delayed_work(&ir->work, 0); - - return 0; -} - -static void tm6000_ir_stop(struct rc_dev *rc) -{ - struct tm6000_IR *ir = rc->priv; - - dprintk(2, "%s\n",__func__); - - 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; - - dprintk(2, "%s\n",__func__); - - if ((rc->rc_map.scan) && (rc_type == RC_TYPE_NEC)) - ir->key_addr = ((rc->rc_map.scan[0].scancode >> 8) & 0xffff); - - ir->rc_type = rc_type; - - tm6000_ir_config(ir); - /* TODO */ - return 0; -} - -static int __tm6000_ir_int_start(struct rc_dev *rc) -{ - struct tm6000_IR *ir = rc->priv; - struct tm6000_core *dev = ir->dev; - int pipe, size; - int err = -ENOMEM; - - if (!ir) - return -ENODEV; - - dprintk(2, "%s\n",__func__); - - ir->int_urb = usb_alloc_urb(0, GFP_ATOMIC); - 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(1, "IR max size: %d\n", size); - - ir->int_urb->transfer_buffer = kzalloc(size, GFP_ATOMIC); - if (ir->int_urb->transfer_buffer == NULL) { - usb_free_urb(ir->int_urb); - return err; - } - dprintk(1, "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); - - ir->submit_urb = 1; - schedule_delayed_work(&ir->work, msecs_to_jiffies(URB_SUBMIT_DELAY)); - - return 0; -} - -static void __tm6000_ir_int_stop(struct rc_dev *rc) -{ - struct tm6000_IR *ir = rc->priv; - - if (!ir || !ir->int_urb) - return; - - dprintk(2, "%s\n",__func__); - - usb_kill_urb(ir->int_urb); - kfree(ir->int_urb->transfer_buffer); - usb_free_urb(ir->int_urb); - ir->int_urb = NULL; -} - -int tm6000_ir_int_start(struct tm6000_core *dev) -{ - struct tm6000_IR *ir = dev->ir; - - if (!ir) - return 0; - - return __tm6000_ir_int_start(ir->rc); -} - -void tm6000_ir_int_stop(struct tm6000_core *dev) -{ - struct tm6000_IR *ir = dev->ir; - - if (!ir || !ir->rc) - return; - - __tm6000_ir_int_stop(ir->rc); -} - -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_ATOMIC); - rc = rc_allocate_device(); - if (!ir || !rc) - goto out; - - dprintk(2, "%s\n", __func__); - - /* record handles to ourself */ - ir->dev = dev; - dev->ir = ir; - ir->rc = rc; - - /* input setup */ - rc->allowed_protos = RC_TYPE_RC5 | RC_TYPE_NEC; - /* Neded, in order to support NEC remotes with 24 or 32 bits */ - rc->scanmask = 0xffff; - rc->priv = ir; - rc->change_protocol = tm6000_ir_change_protocol; - if (dev->int_in.endp) { - rc->open = __tm6000_ir_int_start; - rc->close = __tm6000_ir_int_stop; - INIT_DELAYED_WORK(&ir->work, tm6000_ir_int_work); - } else { - rc->open = tm6000_ir_start; - rc->close = tm6000_ir_stop; - ir->polling = 50; - INIT_DELAYED_WORK(&ir->work, tm6000_ir_handle_key); - } - rc->driver_type = RC_DRIVER_SCANCODE; - - 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; - - /* 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; - - dprintk(2, "%s\n",__func__); - - if (!ir->polling) - __tm6000_ir_int_stop(ir->rc); - - tm6000_ir_stop(ir->rc); - - /* Turn off the led */ - tm6000_flash_led(dev, 0); - ir->pwled = 0; - - rc_unregister_device(ir->rc); - - kfree(ir); - dev->ir = NULL; - - return 0; -} |