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- /*
- 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/moduleparam.h>
- #include <linux/init.h>
- #include <linux/delay.h>
- #include <linux/sched.h>
- #include <linux/interrupt.h>
- #include <linux/input.h>
- #include <linux/usb.h>
- #include "em28xx.h"
- static unsigned int disable_ir = 0;
- module_param(disable_ir, int, 0444);
- MODULE_PARM_DESC(disable_ir,"disable infrared remote support");
- static unsigned int ir_debug = 0;
- module_param(ir_debug, int, 0644);
- MODULE_PARM_DESC(ir_debug,"enable debug messages [IR]");
- #define dprintk(fmt, arg...) if (ir_debug) \
- printk(KERN_DEBUG "%s/ir: " fmt, ir->c.name , ## arg)
- /* ----------------------------------------------------------------------- */
- static int 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)) {
- dprintk("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 */
- dprintk("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;
- }
- static int get_key_em_haup(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw)
- {
- unsigned char buf[2];
- unsigned char code;
- /* poll IR chip */
- if (2 != i2c_master_recv(&ir->c,buf,2))
- return -EIO;
- /* Does eliminate repeated parity code */
- if (buf[1]==0xff)
- return 0;
- ir->old=buf[1];
- /* Rearranges bits to the right order */
- code= ((buf[0]&0x01)<<5) | /* 0010 0000 */
- ((buf[0]&0x02)<<3) | /* 0001 0000 */
- ((buf[0]&0x04)<<1) | /* 0000 1000 */
- ((buf[0]&0x08)>>1) | /* 0000 0100 */
- ((buf[0]&0x10)>>3) | /* 0000 0010 */
- ((buf[0]&0x20)>>5); /* 0000 0001 */
- dprintk("ir hauppauge (em2840): code=0x%02x (rcv=0x%02x)\n",code,buf[0]);
- /* return key */
- *ir_key = code;
- *ir_raw = code;
- return 1;
- }
- static int 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)) {
- dprintk("read error\n");
- return -EIO;
- }
- dprintk("key %02x\n", buf[2]&0x3f);
- if (buf[0]!=0x00){
- return 0;
- }
- *ir_key = buf[2]&0x3f;
- *ir_raw = buf[2]&0x3f;
- return 1;
- }
- /* ----------------------------------------------------------------------- */
- void em28xx_set_ir(struct em28xx * dev,struct IR_i2c *ir)
- {
- if (disable_ir) {
- ir->get_key=NULL;
- return ;
- }
- /* detect & configure */
- switch (dev->model) {
- case (EM2800_BOARD_UNKNOWN):
- break;
- case (EM2820_BOARD_UNKNOWN):
- break;
- case (EM2800_BOARD_TERRATEC_CINERGY_200):
- case (EM2820_BOARD_TERRATEC_CINERGY_250):
- ir->ir_codes = ir_codes_em_terratec;
- ir->get_key = get_key_terratec;
- snprintf(ir->c.name, sizeof(ir->c.name), "i2c IR (EM28XX Terratec)");
- break;
- case (EM2820_BOARD_PINNACLE_USB_2):
- ir->ir_codes = ir_codes_pinnacle_grey;
- ir->get_key = get_key_pinnacle_usb_grey;
- snprintf(ir->c.name, sizeof(ir->c.name), "i2c IR (EM28XX Pinnacle PCTV)");
- break;
- case (EM2820_BOARD_HAUPPAUGE_WINTV_USB_2):
- ir->ir_codes = ir_codes_hauppauge_new;
- ir->get_key = get_key_em_haup;
- snprintf(ir->c.name, sizeof(ir->c.name), "i2c IR (EM2840 Hauppauge)");
- break;
- case (EM2820_BOARD_MSI_VOX_USB_2):
- break;
- case (EM2800_BOARD_LEADTEK_WINFAST_USBII):
- break;
- case (EM2800_BOARD_KWORLD_USB2800):
- break;
- }
- }
- /* ----------------------------------------------------------------------
- * Local variables:
- * c-basic-offset: 8
- * End:
- */
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