[media] hdpvr: Add I2C and ir-kdb-i2c registration of the Zilog Z8 IR chip

Adds I2C registration of the Zilog Z8F0811 IR microcontroller for either
lirc_zilog or ir-kbd-i2c to use.  This is a required step in removing
lirc_zilog's use of the deprecated struct i2c_adapter.id field.

Signed-off-by: Andy Walls <awalls@md.metrocast.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/video/hdpvr/hdpvr-core.c

@@ -385,6 +385,11 @@ static int hdpvr_probe(struct usb_interface *interface,
 		v4l2_err(&dev->v4l2_dev, "registering i2c adapter failed\n");
 		goto error;
 	}
+
+	/* until i2c is working properly */
+	retval = 0; /* hdpvr_register_i2c_ir(dev); */
+	if (retval < 0)
+		v4l2_err(&dev->v4l2_dev, "registering i2c IR devices failed\n");
 #endif /* CONFIG_I2C */
 
 	/* let the user know what node this device is now attached to */

drivers/media/video/hdpvr/hdpvr-i2c.c

@@ -4,6 +4,9 @@
  *
  * Copyright (C) 2008      Janne Grunau (j@jannau.net)
  *
+ * IR device registration code is
+ * Copyright (C) 2010	Andy Walls <awalls@md.metrocast.net>
+ *
  *	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.
@@ -22,6 +25,56 @@
 #define REQTYPE_I2C_WRITE	0xb0
 #define REQTYPE_I2C_WRITE_STATT	0xd0
 
+#define Z8F0811_IR_TX_I2C_ADDR	0x70
+#define Z8F0811_IR_RX_I2C_ADDR	0x71
+
+static const u8 ir_i2c_addrs[] = {
+	Z8F0811_IR_TX_I2C_ADDR,
+	Z8F0811_IR_RX_I2C_ADDR,
+};
+
+static const char * const ir_devicenames[] = {
+	"ir_tx_z8f0811_hdpvr",
+	"ir_rx_z8f0811_hdpvr",
+};
+
+static int hdpvr_new_i2c_ir(struct hdpvr_device *dev, struct i2c_adapter *adap,
+			    const char *type, u8 addr)
+{
+	struct i2c_board_info info;
+	struct IR_i2c_init_data *init_data = &dev->ir_i2c_init_data;
+	unsigned short addr_list[2] = { addr, I2C_CLIENT_END };
+
+	memset(&info, 0, sizeof(struct i2c_board_info));
+	strlcpy(info.type, type, I2C_NAME_SIZE);
+
+	/* Our default information for ir-kbd-i2c.c to use */
+	switch (addr) {
+	case Z8F0811_IR_RX_I2C_ADDR:
+		init_data->ir_codes = RC_MAP_HAUPPAUGE_NEW;
+		init_data->internal_get_key_func = IR_KBD_GET_KEY_HAUP_XVR;
+		init_data->type = RC_TYPE_RC5;
+		init_data->name = "HD PVR";
+		info.platform_data = init_data;
+		break;
+	}
+
+	return i2c_new_probed_device(adap, &info, addr_list, NULL) == NULL ?
+	       -1 : 0;
+}
+
+int hdpvr_register_i2c_ir(struct hdpvr_device *dev)
+{
+	int i;
+	int ret = 0;
+
+	for (i = 0; i < ARRAY_SIZE(ir_i2c_addrs); i++)
+		ret += hdpvr_new_i2c_ir(dev, dev->i2c_adapter,
+					ir_devicenames[i], ir_i2c_addrs[i]);
+
+	return ret;
+}
+
 static int hdpvr_i2c_read(struct hdpvr_device *dev, unsigned char addr,
 			  char *data, int len)
 {

drivers/media/video/hdpvr/hdpvr.h

@@ -16,6 +16,7 @@
 #include <linux/videodev2.h>
 
 #include <media/v4l2-device.h>
+#include <media/ir-kbd-i2c.h>
 
 #define HDPVR_MAJOR_VERSION 0
 #define HDPVR_MINOR_VERSION 2
@@ -109,6 +110,9 @@ struct hdpvr_device {
 	/* I2C lock */
 	struct mutex		i2c_mutex;
 
+	/* For passing data to ir-kbd-i2c */
+	struct IR_i2c_init_data	ir_i2c_init_data;
+
 	/* usb control transfer buffer and lock */
 	struct mutex		usbc_mutex;
 	u8			*usbc_buf;
@@ -306,6 +310,8 @@ int hdpvr_cancel_queue(struct hdpvr_device *dev);
 /* i2c adapter registration */
 int hdpvr_register_i2c_adapter(struct hdpvr_device *dev);
 
+int hdpvr_register_i2c_ir(struct hdpvr_device *dev);
+
 /*========================================================================*/
 /* buffer management */
 int hdpvr_free_buffers(struct hdpvr_device *dev);