V4L/DVB (5786): Ir-kbd-i2c: add support for Hauppauge HVR1300 remote

- add support for the I2C based IR transceiver of the Hauppauge HVR-1300
- remove bad code from cx88-input.c

Signed-off-by: Jan Frey <jfrey@gmx.de>
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

drivers/media/video/cx88/cx88-input.c

@@ -218,7 +218,6 @@ int cx88_ir_init(struct cx88_core *core, struct pci_dev *pci)
 	case CX88_BOARD_HAUPPAUGE_NOVASE2_S1:
 	case CX88_BOARD_HAUPPAUGE_NOVASPLUS_S1:
 	case CX88_BOARD_HAUPPAUGE_HVR1100:
-	case CX88_BOARD_HAUPPAUGE_HVR1300:
 	case CX88_BOARD_HAUPPAUGE_HVR3000:
 		ir_codes = ir_codes_hauppauge_new;
 		ir_type = IR_TYPE_RC5;
@@ -438,7 +437,6 @@ void cx88_ir_irq(struct cx88_core *core)
 	case CX88_BOARD_HAUPPAUGE_NOVASE2_S1:
 	case CX88_BOARD_HAUPPAUGE_NOVASPLUS_S1:
 	case CX88_BOARD_HAUPPAUGE_HVR1100:
-	case CX88_BOARD_HAUPPAUGE_HVR1300:
 	case CX88_BOARD_HAUPPAUGE_HVR3000:
 		ircode = ir_decode_biphase(ir->samples, ir->scount, 5, 7);
 		ir_dprintk("biphase decoded: %x\n", ircode);

drivers/media/video/ir-kbd-i2c.c

@@ -37,6 +37,7 @@
 #include <linux/errno.h>
 #include <linux/slab.h>
 #include <linux/i2c.h>
+#include <linux/i2c-id.h>
 #include <linux/workqueue.h>
 #include <asm/semaphore.h>
 
@@ -60,21 +61,22 @@ MODULE_PARM_DESC(hauppauge, "Specify Hauppauge remote: 0=black, 1=grey (defaults
 
 /* ----------------------------------------------------------------------- */
 
-static int get_key_haup(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw)
+static int get_key_haup_common(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw,
+			       int size, int offset)
 {
-	unsigned char buf[3];
+	unsigned char buf[6];
 	int start, range, toggle, dev, code;
 
 	/* poll IR chip */
-	if (3 != i2c_master_recv(&ir->c,buf,3))
+	if (size != i2c_master_recv(&ir->c,buf,size))
 		return -EIO;
 
 	/* split rc5 data block ... */
-	start  = (buf[0] >> 7) &    1;
-	range  = (buf[0] >> 6) &    1;
-	toggle = (buf[0] >> 5) &    1;
-	dev    =  buf[0]       & 0x1f;
-	code   = (buf[1] >> 2) & 0x3f;
+	start  = (buf[offset] >> 7) &    1;
+	range  = (buf[offset] >> 6) &    1;
+	toggle = (buf[offset] >> 5) &    1;
+	dev    =  buf[offset]       & 0x1f;
+	code   = (buf[offset+1] >> 2) & 0x3f;
 
 	/* rc5 has two start bits
 	 * the first bit must be one
@@ -96,6 +98,16 @@ static int get_key_haup(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw)
 	return 1;
 }
 
+static inline int get_key_haup(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw)
+{
+	return get_key_haup_common (ir, ir_key, ir_raw, 3, 0);
+}
+
+static inline int get_key_haup_xvr(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw)
+{
+	return get_key_haup_common (ir, ir_key, ir_raw, 6, 3);
+}
+
 static int get_key_pixelview(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw)
 {
 	unsigned char b;
@@ -355,9 +367,21 @@ static int ir_attach(struct i2c_adapter *adap, int addr,
 	case 0x7a:
 	case 0x47:
 	case 0x71:
-		/* Handled by saa7134-input */
-		name        = "SAA713x remote";
-		ir_type     = IR_TYPE_OTHER;
+		if (adap->id == I2C_HW_B_CX2388x) {
+			/* Handled by cx88-input */
+			name        = "CX2388x remote";
+			ir_type     = IR_TYPE_RC5;
+			ir->get_key = get_key_haup_xvr;
+			if (hauppauge == 1) {
+				ir_codes    = ir_codes_hauppauge_new;
+			} else {
+				ir_codes    = ir_codes_rc5_tv;
+			}
+		} else {
+			/* Handled by saa7134-input */
+			name        = "SAA713x remote";
+			ir_type     = IR_TYPE_OTHER;
+		}
 		break;
 	default:
 		/* shouldn't happen */
@@ -451,6 +475,7 @@ static int ir_probe(struct i2c_adapter *adap)
 	static const int probe_bttv[] = { 0x1a, 0x18, 0x4b, 0x64, 0x30, -1};
 	static const int probe_saa7134[] = { 0x7a, 0x47, 0x71, -1 };
 	static const int probe_em28XX[] = { 0x30, 0x47, -1 };
+	static const int probe_cx88[] = { 0x18, 0x71, -1 };
 	const int *probe = NULL;
 	struct i2c_client c;
 	unsigned char buf;
@@ -469,6 +494,9 @@ static int ir_probe(struct i2c_adapter *adap)
 	case I2C_HW_B_EM28XX:
 		probe = probe_em28XX;
 		break;
+	case I2C_HW_B_CX2388x:
+		probe = probe_cx88;
+		break;
 	}
 	if (NULL == probe)
 		return 0;