[PATCH] v4l: 784: several improvement on i2c ir handling for em2820

- Several Improvement on I2C IR handling for em2820:
        - moved Pinnacle IR table (ir_codes_em2820) to em2820-input.c
        - IR struct renamed and moved to a header file.
        - New file to handle em2820-specific IR.
        - Some cleanups.
        - attach now detects I2C IR and calls em2820-specific IR code
        - IR compat code moved to compat.h
        - New header with struct IR_i2c there, to allow it to be
          used by board-specific input handlers.

- Some improvements at em28xx board detection:
        - Board detection message improved to show interface and class.
        - Now it doesn't touch audio interfaces.

Signed-off-by: Mauro Carvalho Chehab <mchehab@brturbo.com.br>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 150 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..d6b3e15a035
--- /dev/null
+++ b/drivers/media/video/em28xx/em28xx-input.c
@@ -0,0 +1,150 @@
+/*
+ *
+ * handle saa7134 IR remotes via linux kernel input layer.
+ *
+ * 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 "em2820.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_pinnacle[IR_KEYTAB_SIZE] = {
+	[  0 ] = KEY_CHANNEL,
+	[  1 ] = KEY_SELECT,
+	[  2 ] = KEY_MUTE,
+	[  3 ] = KEY_POWER,
+	[  4 ] = KEY_KP1,
+	[  5 ] = KEY_KP2,
+	[  6 ] = KEY_KP3,
+	[  7 ] = KEY_CHANNELUP,
+	[  8 ] = KEY_KP4,
+	[  9 ] = KEY_KP5,
+	[ 10 ] = KEY_KP6,
+
+	[ 11 ] = KEY_CHANNELDOWN,
+	[ 12 ] = KEY_KP7,
+	[ 13 ] = KEY_KP8,
+	[ 14 ] = KEY_KP9,
+	[ 15 ] = KEY_VOLUMEUP,
+	[ 16 ] = KEY_KP0,
+	[ 17 ] = KEY_MENU,
+	[ 18 ] = KEY_PRINT,
+
+	[ 19 ] = KEY_VOLUMEDOWN,
+	[ 21 ] = KEY_PAUSE,
+	[ 23 ] = KEY_RECORD,
+	[ 24 ] = KEY_REWIND,
+	[ 25 ] = KEY_PLAY,
+	[ 27 ] = KEY_BACKSPACE,
+	[ 29 ] = KEY_STOP,
+	[ 31 ] = KEY_ZOOM,
+};
+
+/* ----------------------------------------------------------------------- */
+
+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 em2820_set_ir(struct em2820 * dev,struct IR_i2c *ir)
+{
+	if (disable_ir)
+		return ;
+
+	/* detect & configure */
+	switch (dev->model) {
+	case (EM2800_BOARD_UNKNOWN):
+		break;
+	case (EM2820_BOARD_UNKNOWN):
+		break;
+	case (EM2820_BOARD_TERRATEC_CINERGY_250):
+		break;
+	case (EM2820_BOARD_PINNACLE_USB_2):
+		ir->ir_codes = ir_codes_em_pinnacle;
+		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 Hauppage)");
+		break;
+	case (EM2820_BOARD_MSI_VOX_USB_2):
+		break;
+	case (EM2800_BOARD_TERRATEC_CINERGY_200):
+		break;
+	case (EM2800_BOARD_LEADTEK_WINFAST_USBII):
+		break;
+	case (EM2800_BOARD_KWORLD_USB2800):
+		break;
+	}
+}
+
+/* ----------------------------------------------------------------------
+ * Local variables:
+ * c-basic-offset: 8
+ * End:
+ */