From 291b2338c98c211794d55a68c9585d278fc86563 Mon Sep 17 00:00:00 2001 From: Cástor Muñoz Date: Sat, 6 Dec 2014 19:00:34 +0100 Subject: ipod Classic: implement HAVE_RECORDING This patch has been tested on iPod 80 and 160slim, actually it works but some updates must be done to the final version: - unlimitted input buffer - decrease CHUNK_SIZE - use non-cached addresses instead of discard d-cache ??? Capture hardware versions: Ver iPod models capture support --- ----------- --------------- 0 80/160fat dock line-in 1 120/160slim dock line-in + jack mic HW version 1 includes an amplifier for the jack plug mic. Capture HW detection only tested on iPod 80 and 160slim. CODEC power: AFAIK, OF powers CS42L55 at VA=2.4V for capture (1.8V for playback) and turns on the ADC charge pump. CODEC datasheet recommmends to disable the charge pump for VA>2.1V. CS42L55 DS, s4.13 (Required Initialization Settings): for VA>2.1V, some adjustments "must" be done using undocummented "control port compensation" registers. OF does not modifies these registers when VA=2.4V. This patch configures capture HW in the same way as OF does. TODO: - ADC full scale voltage depends on VA, perform tests to find clipping levels for VA=1.8V and VA=2.4V Change-Id: I7e20fd3ecaa83b1c58d5c746f5153fe5c3891d75 --- firmware/target/arm/s5l8702/debug-s5l8702.c | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'firmware/target/arm/s5l8702/debug-s5l8702.c') diff --git a/firmware/target/arm/s5l8702/debug-s5l8702.c b/firmware/target/arm/s5l8702/debug-s5l8702.c index 74f765e447..c49737756c 100644 --- a/firmware/target/arm/s5l8702/debug-s5l8702.c +++ b/firmware/target/arm/s5l8702/debug-s5l8702.c @@ -39,6 +39,8 @@ #define _DEBUG_PRINTF(a, varargs...) lcd_putsf(0, line++, (a), ##varargs); extern int lcd_type; +extern int rec_hw_ver; + bool dbg_hw_info(void) { int line; @@ -70,6 +72,9 @@ bool dbg_hw_info(void) _DEBUG_PRINTF("LCD type: %d", lcd_type); line++; + + _DEBUG_PRINTF("capture HW: %d", rec_hw_ver); + line++; } else if(state==1) { -- cgit v1.2.3