diff options
Diffstat (limited to 'ANDROID_3.4.5/drivers/media/video/em28xx/em28xx-input.c')
| -rw-r--r-- | ANDROID_3.4.5/drivers/media/video/em28xx/em28xx-input.c | 563 |
1 files changed, 0 insertions, 563 deletions
diff --git a/ANDROID_3.4.5/drivers/media/video/em28xx/em28xx-input.c b/ANDROID_3.4.5/drivers/media/video/em28xx/em28xx-input.c deleted file mode 100644 index 2630b265..00000000 --- a/ANDROID_3.4.5/drivers/media/video/em28xx/em28xx-input.c +++ /dev/null @@ -1,563 +0,0 @@ -/* - handle em28xx IR remotes via linux kernel input layer. - - Copyright (C) 2005 Ludovico Cavedon <cavedon@sssup.it> - Markus Rechberger <mrechberger@gmail.com> - Mauro Carvalho Chehab <mchehab@infradead.org> - Sascha Sommer <saschasommer@freenet.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; 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 - */ - -#include <linux/module.h> -#include <linux/init.h> -#include <linux/delay.h> -#include <linux/interrupt.h> -#include <linux/usb.h> -#include <linux/slab.h> - -#include "em28xx.h" - -#define EM28XX_SNAPSHOT_KEY KEY_CAMERA -#define EM28XX_SBUTTON_QUERY_INTERVAL 500 -#define EM28XX_R0C_USBSUSP_SNAPSHOT 0x20 - -static unsigned int ir_debug; -module_param(ir_debug, int, 0644); -MODULE_PARM_DESC(ir_debug, "enable debug messages [IR]"); - -#define MODULE_NAME "em28xx" - -#define i2cdprintk(fmt, arg...) \ - if (ir_debug) { \ - printk(KERN_DEBUG "%s/ir: " fmt, ir->name , ## arg); \ - } - -#define dprintk(fmt, arg...) \ - if (ir_debug) { \ - printk(KERN_DEBUG "%s/ir: " fmt, ir->name , ## arg); \ - } - -/********************************************************** - Polling structure used by em28xx IR's - **********************************************************/ - -struct em28xx_ir_poll_result { - unsigned int toggle_bit:1; - unsigned int read_count:7; - u8 rc_address; - u8 rc_data[4]; /* 1 byte on em2860/2880, 4 on em2874 */ -}; - -struct em28xx_IR { - struct em28xx *dev; - struct rc_dev *rc; - char name[32]; - char phys[32]; - - /* poll external decoder */ - int polling; - struct delayed_work work; - unsigned int full_code:1; - unsigned int last_readcount; - - int (*get_key)(struct em28xx_IR *, struct em28xx_ir_poll_result *); -}; - -/********************************************************** - I2C IR based get keycodes - should be used with ir-kbd-i2c - **********************************************************/ - -int em28xx_get_key_terratec(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw) -{ - unsigned char b; - - /* poll IR chip */ - if (1 != i2c_master_recv(ir->c, &b, 1)) { - i2cdprintk("read error\n"); - return -EIO; - } - - /* it seems that 0xFE indicates that a button is still hold - down, while 0xff indicates that no button is hold - down. 0xfe sequences are sometimes interrupted by 0xFF */ - - i2cdprintk("key %02x\n", b); - - if (b == 0xff) - return 0; - - if (b == 0xfe) - /* keep old data */ - return 1; - - *ir_key = b; - *ir_raw = b; - return 1; -} - -int em28xx_get_key_em_haup(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw) -{ - unsigned char buf[2]; - u16 code; - int size; - - /* poll IR chip */ - size = i2c_master_recv(ir->c, buf, sizeof(buf)); - - if (size != 2) - return -EIO; - - /* Does eliminate repeated parity code */ - if (buf[1] == 0xff) - return 0; - - ir->old = buf[1]; - - /* - * Rearranges bits to the right order. - * The bit order were determined experimentally by using - * The original Hauppauge Grey IR and another RC5 that uses addr=0x08 - * The RC5 code has 14 bits, but we've experimentally determined - * the meaning for only 11 bits. - * So, the code translation is not complete. Yet, it is enough to - * work with the provided RC5 IR. - */ - code = - ((buf[0] & 0x01) ? 0x0020 : 0) | /* 0010 0000 */ - ((buf[0] & 0x02) ? 0x0010 : 0) | /* 0001 0000 */ - ((buf[0] & 0x04) ? 0x0008 : 0) | /* 0000 1000 */ - ((buf[0] & 0x08) ? 0x0004 : 0) | /* 0000 0100 */ - ((buf[0] & 0x10) ? 0x0002 : 0) | /* 0000 0010 */ - ((buf[0] & 0x20) ? 0x0001 : 0) | /* 0000 0001 */ - ((buf[1] & 0x08) ? 0x1000 : 0) | /* 0001 0000 */ - ((buf[1] & 0x10) ? 0x0800 : 0) | /* 0000 1000 */ - ((buf[1] & 0x20) ? 0x0400 : 0) | /* 0000 0100 */ - ((buf[1] & 0x40) ? 0x0200 : 0) | /* 0000 0010 */ - ((buf[1] & 0x80) ? 0x0100 : 0); /* 0000 0001 */ - - i2cdprintk("ir hauppauge (em2840): code=0x%02x (rcv=0x%02x%02x)\n", - code, buf[1], buf[0]); - - /* return key */ - *ir_key = code; - *ir_raw = code; - return 1; -} - -int em28xx_get_key_pinnacle_usb_grey(struct IR_i2c *ir, u32 *ir_key, - u32 *ir_raw) -{ - unsigned char buf[3]; - - /* poll IR chip */ - - if (3 != i2c_master_recv(ir->c, buf, 3)) { - i2cdprintk("read error\n"); - return -EIO; - } - - i2cdprintk("key %02x\n", buf[2]&0x3f); - if (buf[0] != 0x00) - return 0; - - *ir_key = buf[2]&0x3f; - *ir_raw = buf[2]&0x3f; - - return 1; -} - -int em28xx_get_key_winfast_usbii_deluxe(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw) -{ - unsigned char subaddr, keydetect, key; - - struct i2c_msg msg[] = { { .addr = ir->c->addr, .flags = 0, .buf = &subaddr, .len = 1}, - - { .addr = ir->c->addr, .flags = I2C_M_RD, .buf = &keydetect, .len = 1} }; - - subaddr = 0x10; - if (2 != i2c_transfer(ir->c->adapter, msg, 2)) { - i2cdprintk("read error\n"); - return -EIO; - } - if (keydetect == 0x00) - return 0; - - subaddr = 0x00; - msg[1].buf = &key; - if (2 != i2c_transfer(ir->c->adapter, msg, 2)) { - i2cdprintk("read error\n"); - return -EIO; - } - if (key == 0x00) - return 0; - - *ir_key = key; - *ir_raw = key; - return 1; -} - -/********************************************************** - Poll based get keycode functions - **********************************************************/ - -/* This is for the em2860/em2880 */ -static int default_polling_getkey(struct em28xx_IR *ir, - struct em28xx_ir_poll_result *poll_result) -{ - struct em28xx *dev = ir->dev; - int rc; - u8 msg[3] = { 0, 0, 0 }; - - /* Read key toggle, brand, and key code - on registers 0x45, 0x46 and 0x47 - */ - rc = dev->em28xx_read_reg_req_len(dev, 0, EM28XX_R45_IR, - msg, sizeof(msg)); - if (rc < 0) - return rc; - - /* Infrared toggle (Reg 0x45[7]) */ - poll_result->toggle_bit = (msg[0] >> 7); - - /* Infrared read count (Reg 0x45[6:0] */ - poll_result->read_count = (msg[0] & 0x7f); - - /* Remote Control Address (Reg 0x46) */ - poll_result->rc_address = msg[1]; - - /* Remote Control Data (Reg 0x47) */ - poll_result->rc_data[0] = msg[2]; - - return 0; -} - -static int em2874_polling_getkey(struct em28xx_IR *ir, - struct em28xx_ir_poll_result *poll_result) -{ - struct em28xx *dev = ir->dev; - int rc; - u8 msg[5] = { 0, 0, 0, 0, 0 }; - - /* Read key toggle, brand, and key code - on registers 0x51-55 - */ - rc = dev->em28xx_read_reg_req_len(dev, 0, EM2874_R51_IR, - msg, sizeof(msg)); - if (rc < 0) - return rc; - - /* Infrared toggle (Reg 0x51[7]) */ - poll_result->toggle_bit = (msg[0] >> 7); - - /* Infrared read count (Reg 0x51[6:0] */ - poll_result->read_count = (msg[0] & 0x7f); - - /* Remote Control Address (Reg 0x52) */ - poll_result->rc_address = msg[1]; - - /* Remote Control Data (Reg 0x53-55) */ - poll_result->rc_data[0] = msg[2]; - poll_result->rc_data[1] = msg[3]; - poll_result->rc_data[2] = msg[4]; - - return 0; -} - -/********************************************************** - Polling code for em28xx - **********************************************************/ - -static void em28xx_ir_handle_key(struct em28xx_IR *ir) -{ - int result; - struct em28xx_ir_poll_result poll_result; - - /* read the registers containing the IR status */ - result = ir->get_key(ir, &poll_result); - if (unlikely(result < 0)) { - dprintk("ir->get_key() failed %d\n", result); - return; - } - - if (unlikely(poll_result.read_count != ir->last_readcount)) { - dprintk("%s: toggle: %d, count: %d, key 0x%02x%02x\n", __func__, - poll_result.toggle_bit, poll_result.read_count, - poll_result.rc_address, poll_result.rc_data[0]); - if (ir->full_code) - rc_keydown(ir->rc, - poll_result.rc_address << 8 | - poll_result.rc_data[0], - poll_result.toggle_bit); - else - rc_keydown(ir->rc, - poll_result.rc_data[0], - poll_result.toggle_bit); - - if (ir->dev->chip_id == CHIP_ID_EM2874 || - ir->dev->chip_id == CHIP_ID_EM2884) - /* The em2874 clears the readcount field every time the - register is read. The em2860/2880 datasheet says that it - is supposed to clear the readcount, but it doesn't. So with - the em2874, we are looking for a non-zero read count as - opposed to a readcount that is incrementing */ - ir->last_readcount = 0; - else - ir->last_readcount = poll_result.read_count; - } -} - -static void em28xx_ir_work(struct work_struct *work) -{ - struct em28xx_IR *ir = container_of(work, struct em28xx_IR, work.work); - - em28xx_ir_handle_key(ir); - schedule_delayed_work(&ir->work, msecs_to_jiffies(ir->polling)); -} - -static int em28xx_ir_start(struct rc_dev *rc) -{ - struct em28xx_IR *ir = rc->priv; - - INIT_DELAYED_WORK(&ir->work, em28xx_ir_work); - schedule_delayed_work(&ir->work, 0); - - return 0; -} - -static void em28xx_ir_stop(struct rc_dev *rc) -{ - struct em28xx_IR *ir = rc->priv; - - cancel_delayed_work_sync(&ir->work); -} - -int em28xx_ir_change_protocol(struct rc_dev *rc_dev, u64 rc_type) -{ - int rc = 0; - struct em28xx_IR *ir = rc_dev->priv; - struct em28xx *dev = ir->dev; - u8 ir_config = EM2874_IR_RC5; - - /* Adjust xclk based o IR table for RC5/NEC tables */ - - if (rc_type == RC_TYPE_RC5) { - dev->board.xclk |= EM28XX_XCLK_IR_RC5_MODE; - ir->full_code = 1; - } else if (rc_type == RC_TYPE_NEC) { - dev->board.xclk &= ~EM28XX_XCLK_IR_RC5_MODE; - ir_config = EM2874_IR_NEC; - ir->full_code = 1; - } else if (rc_type != RC_TYPE_UNKNOWN) - rc = -EINVAL; - - em28xx_write_reg_bits(dev, EM28XX_R0F_XCLK, dev->board.xclk, - EM28XX_XCLK_IR_RC5_MODE); - - /* Setup the proper handler based on the chip */ - switch (dev->chip_id) { - case CHIP_ID_EM2860: - case CHIP_ID_EM2883: - ir->get_key = default_polling_getkey; - break; - case CHIP_ID_EM2884: - case CHIP_ID_EM2874: - case CHIP_ID_EM28174: - ir->get_key = em2874_polling_getkey; - em28xx_write_regs(dev, EM2874_R50_IR_CONFIG, &ir_config, 1); - break; - default: - printk("Unrecognized em28xx chip id 0x%02x: IR not supported\n", - dev->chip_id); - rc = -EINVAL; - } - - return rc; -} - -int em28xx_ir_init(struct em28xx *dev) -{ - struct em28xx_IR *ir; - struct rc_dev *rc; - int err = -ENOMEM; - - if (dev->board.ir_codes == NULL) { - /* No remote control support */ - return 0; - } - - ir = kzalloc(sizeof(*ir), GFP_KERNEL); - rc = rc_allocate_device(); - if (!ir || !rc) - goto err_out_free; - - /* record handles to ourself */ - ir->dev = dev; - dev->ir = ir; - ir->rc = rc; - - /* - * em2874 supports more protocols. For now, let's just announce - * the two protocols that were already tested - */ - rc->allowed_protos = RC_TYPE_RC5 | RC_TYPE_NEC; - rc->priv = ir; - rc->change_protocol = em28xx_ir_change_protocol; - rc->open = em28xx_ir_start; - rc->close = em28xx_ir_stop; - - /* By default, keep protocol field untouched */ - err = em28xx_ir_change_protocol(rc, RC_TYPE_UNKNOWN); - if (err) - goto err_out_free; - - /* This is how often we ask the chip for IR information */ - ir->polling = 100; /* ms */ - - /* init input device */ - snprintf(ir->name, sizeof(ir->name), "em28xx IR (%s)", - dev->name); - - usb_make_path(dev->udev, ir->phys, sizeof(ir->phys)); - strlcat(ir->phys, "/input0", sizeof(ir->phys)); - - 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->dev.parent = &dev->udev->dev; - rc->map_name = dev->board.ir_codes; - rc->driver_name = MODULE_NAME; - - /* all done */ - err = rc_register_device(rc); - if (err) - goto err_out_stop; - - return 0; - - err_out_stop: - dev->ir = NULL; - err_out_free: - rc_free_device(rc); - kfree(ir); - return err; -} - -int em28xx_ir_fini(struct em28xx *dev) -{ - struct em28xx_IR *ir = dev->ir; - - /* skip detach on non attached boards */ - if (!ir) - return 0; - - if (ir->rc) - rc_unregister_device(ir->rc); - - /* done */ - kfree(ir); - dev->ir = NULL; - return 0; -} - -/********************************************************** - Handle Webcam snapshot button - **********************************************************/ - -static void em28xx_query_sbutton(struct work_struct *work) -{ - /* Poll the register and see if the button is depressed */ - struct em28xx *dev = - container_of(work, struct em28xx, sbutton_query_work.work); - int ret; - - ret = em28xx_read_reg(dev, EM28XX_R0C_USBSUSP); - - if (ret & EM28XX_R0C_USBSUSP_SNAPSHOT) { - u8 cleared; - /* Button is depressed, clear the register */ - cleared = ((u8) ret) & ~EM28XX_R0C_USBSUSP_SNAPSHOT; - em28xx_write_regs(dev, EM28XX_R0C_USBSUSP, &cleared, 1); - - /* Not emulate the keypress */ - input_report_key(dev->sbutton_input_dev, EM28XX_SNAPSHOT_KEY, - 1); - /* Now unpress the key */ - input_report_key(dev->sbutton_input_dev, EM28XX_SNAPSHOT_KEY, - 0); - } - - /* Schedule next poll */ - schedule_delayed_work(&dev->sbutton_query_work, - msecs_to_jiffies(EM28XX_SBUTTON_QUERY_INTERVAL)); -} - -void em28xx_register_snapshot_button(struct em28xx *dev) -{ - struct input_dev *input_dev; - int err; - - em28xx_info("Registering snapshot button...\n"); - input_dev = input_allocate_device(); - if (!input_dev) { - em28xx_errdev("input_allocate_device failed\n"); - return; - } - - usb_make_path(dev->udev, dev->snapshot_button_path, - sizeof(dev->snapshot_button_path)); - strlcat(dev->snapshot_button_path, "/sbutton", - sizeof(dev->snapshot_button_path)); - INIT_DELAYED_WORK(&dev->sbutton_query_work, em28xx_query_sbutton); - - input_dev->name = "em28xx snapshot button"; - input_dev->phys = dev->snapshot_button_path; - input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP); - set_bit(EM28XX_SNAPSHOT_KEY, input_dev->keybit); - input_dev->keycodesize = 0; - input_dev->keycodemax = 0; - input_dev->id.bustype = BUS_USB; - input_dev->id.vendor = le16_to_cpu(dev->udev->descriptor.idVendor); - input_dev->id.product = le16_to_cpu(dev->udev->descriptor.idProduct); - input_dev->id.version = 1; - input_dev->dev.parent = &dev->udev->dev; - - err = input_register_device(input_dev); - if (err) { - em28xx_errdev("input_register_device failed\n"); - input_free_device(input_dev); - return; - } - - dev->sbutton_input_dev = input_dev; - schedule_delayed_work(&dev->sbutton_query_work, - msecs_to_jiffies(EM28XX_SBUTTON_QUERY_INTERVAL)); - return; - -} - -void em28xx_deregister_snapshot_button(struct em28xx *dev) -{ - if (dev->sbutton_input_dev != NULL) { - em28xx_info("Deregistering snapshot button\n"); - cancel_delayed_work_sync(&dev->sbutton_query_work); - input_unregister_device(dev->sbutton_input_dev); - dev->sbutton_input_dev = NULL; - } - return; -} |