---

yaml --- r: 137720 b: refs/heads/master c: 350145a h: refs/heads/master v: v3
git-mirror · Mar 30, 2009 · af56b71 · af56b71
1 parent 31ed4a5
commit af56b71
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Showing 4 changed files with 34 additions and 3 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 31230c5f6f3a3e549f16857b7af45f5e08ca6f30
+refs/heads/master: 350145a4f7d0edffdccdace1221efc6d1d362a36
diff --git a/trunk/drivers/media/video/cx18/cx18-driver.c b/trunk/drivers/media/video/cx18/cx18-driver.c
@@ -1043,8 +1043,21 @@ int cx18_init_on_first_open(struct cx18 *cx)
 	}
 	set_bit(CX18_F_I_LOADED_FW, &cx->i_flags);
 
-	/* Init the firmware twice to work around a silicon bug
-	 * transport related. */
+	/*
+	 * Init the firmware twice to work around a silicon bug
+	 * with the digital TS.
+	 *
+	 * The second firmware load requires us to normalize the APU state,
+	 * or the audio for the first analog capture will be badly incorrect.
+	 *
+	 * I can't seem to call APU_RESETAI and have it succeed without the
+	 * APU capturing audio, so we start and stop it here to do the reset
+	 */
+
+	/* MPEG Encoding, 224 kbps, MPEG Layer II, 48 ksps */
+	cx18_vapi(cx, CX18_APU_START, 2, CX18_APU_ENCODING_METHOD_MPEG|0xb9, 0);
+	cx18_vapi(cx, CX18_APU_RESETAI, 0);
+	cx18_vapi(cx, CX18_APU_STOP, 1, CX18_APU_ENCODING_METHOD_MPEG);
 
 	fw_retry_count = 3;
 	while (--fw_retry_count > 0) {

diff --git a/trunk/drivers/media/video/cx18/cx18-mailbox.c b/trunk/drivers/media/video/cx18/cx18-mailbox.c
@@ -83,6 +83,8 @@ static const struct cx18_api_info api_info[] = {
 	API_ENTRY(CPU, CX18_CPU_DE_SET_MDL_ACK,			0),
 	API_ENTRY(CPU, CX18_CPU_DE_SET_MDL,			API_FAST),
 	API_ENTRY(CPU, CX18_CPU_DE_RELEASE_MDL,			API_SLOW),
+	API_ENTRY(APU, CX18_APU_START,				0),
+	API_ENTRY(APU, CX18_APU_STOP,				0),
 	API_ENTRY(APU, CX18_APU_RESETAI,			0),
 	API_ENTRY(CPU, CX18_CPU_DEBUG_PEEK32,			0),
 	API_ENTRY(0, 0,						0),

diff --git a/trunk/drivers/media/video/cx18/cx23418.h b/trunk/drivers/media/video/cx18/cx23418.h
@@ -56,6 +56,22 @@
 #define APU_CMD_MASK 				0x10000000
 #define APU_CMD_MASK_ACK 			(APU_CMD_MASK | 0x80000000)
 
+#define CX18_APU_ENCODING_METHOD_MPEG		(0 << 28)
+#define CX18_APU_ENCODING_METHOD_AC3		(1 << 28)
+
+/* Description: Command APU to start audio
+   IN[0] - audio parameters (same as CX18_CPU_SET_AUDIO_PARAMETERS?)
+   IN[1] - caller buffer address, or 0
+   ReturnCode - ??? */
+#define CX18_APU_START				(APU_CMD_MASK | 0x01)
+
+/* Description: Command APU to stop audio
+   IN[0] - encoding method to stop
+   ReturnCode - ??? */
+#define CX18_APU_STOP				(APU_CMD_MASK | 0x02)
+
+/* Description: Command APU to reset the AI
+   ReturnCode - ??? */
 #define CX18_APU_RESETAI 			(APU_CMD_MASK | 0x05)
 
 /* Description: This command indicates that a Memory Descriptor List has been