X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=drivers%2Fmedia%2Fvideo%2Fir-kbd-i2c.c;h=fba30a40e9c6fface92fe3909314e64fefd39057;hb=16c70f8c1b54b61c3b951b6fb220df250fe09b32;hp=7e66d83fe0ce672f6fb4cc0b4b53e28246d5b186;hpb=43bc926fffd92024b46cafaf7350d669ba9ca884;p=linux-2.6.git

diff --git a/drivers/media/video/ir-kbd-i2c.c b/drivers/media/video/ir-kbd-i2c.c
index 7e66d83fe..fba30a40e 100644
--- a/drivers/media/video/ir-kbd-i2c.c
+++ b/drivers/media/video/ir-kbd-i2c.c
@@ -150,12 +150,11 @@ static int get_key_knc1(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw)
 	return 1;
 }
 
-/* The new pinnacle PCTV remote (with the colored buttons)
+/* Common (grey or coloured) pinnacle PCTV remote handling
  *
- * Ricardo Cerqueira <v4l@cerqueira.org>
  */
-
-int get_key_pinnacle(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw)
+static int get_key_pinnacle(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw,
+			    int parity_offset, int marker, int code_modulo)
 {
 	unsigned char b[4];
 	unsigned int start = 0,parity = 0,code = 0;
@@ -167,9 +166,9 @@ int get_key_pinnacle(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw)
 	}
 
 	for (start = 0; start<4; start++) {
-		if (b[start] == 0x80) {
-			code=b[(start+3)%4];
-			parity=b[(start+2)%4];
+		if (b[start] == marker) {
+			code=b[(start+parity_offset+1)%4];
+			parity=b[(start+parity_offset)%4];
 		}
 	}
 
@@ -181,16 +180,14 @@ int get_key_pinnacle(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw)
 	if (ir->old == parity)
 		return 0;
 
-
 	ir->old = parity;
 
-	/* Reduce code value to fit inside IR_KEYTAB_SIZE
-	 *
-	 * this is the only value that results in 42 unique
-	 * codes < 128
-	 */
+	/* drop special codes when a key is held down a long time for the grey controller
+	   In this case, the second bit of the code is asserted */
+	if (marker == 0xfe && (code & 0x40))
+		return 0;
 
-	code %= 0x88;
+	code %= code_modulo;
 
 	*ir_raw = code;
 	*ir_key = code;
@@ -200,7 +197,40 @@ int get_key_pinnacle(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw)
 	return 1;
 }
 
-EXPORT_SYMBOL_GPL(get_key_pinnacle);
+/* The grey pinnacle PCTV remote
+ *
+ *  There are one issue with this remote:
+ *   - I2c packet does not change when the same key is pressed quickly. The workaround
+ *     is to hold down each key for about half a second, so that another code is generated
+ *     in the i2c packet, and the function can distinguish key presses.
+ *
+ * Sylvain Pasche <sylvain.pasche@gmail.com>
+ */
+int get_key_pinnacle_grey(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw)
+{
+
+	return get_key_pinnacle(ir, ir_key, ir_raw, 1, 0xfe, 0xff);
+}
+
+EXPORT_SYMBOL_GPL(get_key_pinnacle_grey);
+
+
+/* The new pinnacle PCTV remote (with the colored buttons)
+ *
+ * Ricardo Cerqueira <v4l@cerqueira.org>
+ */
+int get_key_pinnacle_color(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw)
+{
+	/* code_modulo parameter (0x88) is used to reduce code value to fit inside IR_KEYTAB_SIZE
+	 *
+	 * this is the only value that results in 42 unique
+	 * codes < 128
+	 */
+
+	return get_key_pinnacle(ir, ir_key, ir_raw, 2, 0x80, 0x88);
+}
+
+EXPORT_SYMBOL_GPL(get_key_pinnacle_color);
 
 /* ----------------------------------------------------------------------- */