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Diffstat (limited to 'drivers/media/video/em28xx/em28xx-input.c')
-rw-r--r--drivers/media/video/em28xx/em28xx-input.c184
1 files changed, 184 insertions, 0 deletions
diff --git a/drivers/media/video/em28xx/em28xx-input.c b/drivers/media/video/em28xx/em28xx-input.c
new file mode 100644
index 00000000000..32c49df58ad
--- /dev/null
+++ b/drivers/media/video/em28xx/em28xx-input.c
@@ -0,0 +1,184 @@
+/*
+ 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@brturbo.com.br>
+ 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 IR_KEYTAB_TYPE ir_codes_em_terratec[IR_KEYTAB_SIZE] = {
+ [ 0x01 ] = KEY_CHANNEL,
+ [ 0x02 ] = KEY_SELECT,
+ [ 0x03 ] = KEY_MUTE,
+ [ 0x04 ] = KEY_POWER,
+ [ 0x05 ] = KEY_KP1,
+ [ 0x06 ] = KEY_KP2,
+ [ 0x07 ] = KEY_KP3,
+ [ 0x08 ] = KEY_CHANNELUP,
+ [ 0x09 ] = KEY_KP4,
+ [ 0x0a ] = KEY_KP5,
+ [ 0x0b ] = KEY_KP6,
+ [ 0x0c ] = KEY_CHANNELDOWN,
+ [ 0x0d ] = KEY_KP7,
+ [ 0x0e ] = KEY_KP8,
+ [ 0x0f ] = KEY_KP9,
+ [ 0x10 ] = KEY_VOLUMEUP,
+ [ 0x11 ] = KEY_KP0,
+ [ 0x12 ] = KEY_MENU,
+ [ 0x13 ] = KEY_PRINT,
+ [ 0x14 ] = KEY_VOLUMEDOWN,
+ [ 0x16 ] = KEY_PAUSE,
+ [ 0x18 ] = KEY_RECORD,
+ [ 0x19 ] = KEY_REWIND,
+ [ 0x1a ] = KEY_PLAY,
+ [ 0x1b ] = KEY_FORWARD,
+ [ 0x1c ] = KEY_BACKSPACE,
+ [ 0x1e ] = KEY_STOP,
+ [ 0x40 ] = KEY_ZOOM,
+};
+
+/* ----------------------------------------------------------------------- */
+
+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;
+
+ /* avoid fast reapeating */
+ if (buf[1]==ir->old)
+ 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;
+}
+
+/* ----------------------------------------------------------------------- */
+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):
+ 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:
+ */