Commit graph

22 commits

Author SHA1 Message Date
Franklin Wei
3d6d90382e iPod Classic: enable IRAM1 in bootloader
7442742 ("iPod Classic: disable IRAM1") was causing subsequent ipod6g
bootloader builds to result in a completely black screen upon
installation, with recovery only possible with a reflash through DFU
mode.

IRAM1 is re-enabled for bootloader only.

Change-Id: I92d489c91f81cad55d66a8647c1e61a45f468770
2019-10-13 23:23:32 -04:00
Cástor Muñoz
7442742208 iPod Classic: disable IRAM1
On Classic, IRAM1 (second 128Kb of a total of 256KB available IRAM) is
slower than DRAM. Codecs that actually are using regions of IRAM1 runs
faster when DRAM is used, so IRAM1 is disabled and only IRAM0 remains
enabled: 48KB for core and 80KB for codecs/plugins.

The next test_codec results shows how decode time is decreased:

file           boosted     unboosted
*.ra           ~1.5%       ~0.5%
*.mpc          ~21%        ~4.5%
*.ogg          ~0.5%       ~0%
nero_he*.m4a   ~8%         ~1%
nero*.m4a      ~25%        ~7%
wmapro*.wma    ~4.5%       ~0%
wma*.wma       ~25%        ~7%

In addition there is a small power save when IRAM1 HW is disabled.

Change-Id: I102adee11458e82037f23076d5d5956e23235de8
2018-07-30 18:50:27 -04:00
Cástor Muñoz
98bd2231ec iPod Classic: introduce PMU interrupts
PMU interrupts are used to detect USB Vbus, wall adaptor, accessories
and holdswitch. A thread is needed to poll the PMU throught I2C, ATM
it does nothing but showing the state of the inputs on the HW debug
menu, funcionallity for each individual input will be added in next
patches.

Change-Id: If93bf2044d1052729237a7fd1431c8493e09f1c7
2016-05-25 12:45:34 +02:00
Cástor Muñoz
88caf222ed iPod Classic: rework on external interrupts
Change-Id: I5be450adeb12b16070d9bfa31503e2ef350b2981
2016-05-25 12:44:55 +02:00
Cástor Muñoz
3f17745930 iPod Classic: HW initialization for RB
Do not rely on a bootloader initializing the HW, RB initializes
and configures GPIO, I2C, and PMU at startup.

Change-Id: If7f856b1f345f63de584aa4e4fc22d130cd66c80
2016-05-25 12:23:47 +02:00
Cástor Muñoz
1aefd9ea41 iPod Classic: HW preliminary initialization for bootloader
When the bootloader starts, most of HW never has been initialized.
This patch includes all code needed to perform the preliminary
initialization on SYSCON, GPIO, i2c, and MIU.

The code is based on emCORE and OF reverse engineering, ported to
C for readability.

Change-Id: I9ecf2c3e8b1b636241a211dbba8735137accd05c
2016-05-25 10:59:31 +02:00
Cástor Muñoz
8fb67f48ab iPod Classic: updates for uc8702 driver
- Small rework on the UC8702 UART controller to make it compatible with
  other s5l870x SOCs. Files moved and renamed, many conditional code
  added to deal with capabilities and 'features' of the different CPUs.

- A couple of optimizacions that should not affect the functionality.

Change-Id: I705169f7e8b18d5d1da642f81ffc31c4089780a6
2016-05-13 23:21:42 +02:00
Cástor Muñoz
00bda90a21 iPod Classic: add non-cached memory region
Configures uncached memory region and adds some defines for misc HW,
for compability with the bootloader and other future use, current
functionality should not be affected.

Change-Id: I390e79bea1aef5b10dfbc72ad327d7fe438ec6f5
2015-12-17 10:52:49 +01:00
Cástor Muñoz
f753b8ead1 iPod Classic: s5l8702 clocking rewrite+documentation
This is a rewrite of the clocking section, the resulting system
frequencies are the same as the current git version.

This pàtch uses fixed FClk and just one register is written to switch
all system frequencies, it needs less steps than the current git
version to reach the desired frequency, so it is faster and safer.
Includes functions to step-up/down over a table of predefined set of
frequencies.

The major difference is that Vcore is decreased from 1050 to 1000 mV.

See clocking-s5l8702.h for more information.

Change-Id: I58ac6634e1996adbe1c0c0918a7ce94ad1917d8e
2015-12-17 07:05:53 +01:00
Cástor Muñoz
38ae0d53e8 iPod Classic: implement HAVE_SERIAL
Change-Id: I24a861cd45095d858d1a7db39969f6eda17cc563
2015-10-07 06:15:03 +02:00
Cástor Muñoz
291b2338c9 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
2015-10-07 06:15:03 +02:00
Cástor Muñoz
67b4e7f958 iPod Classic: use new PL080 DMA driver
This patch uses the new pl080 DMA driver for I2S playback and LCD
update. I have tried to be as fiel as possible to the current
behaviour, algorithms and configurations are the same, but using
the new driver. Other modifications:

Playback:

 - CHUNK_SIZE is decreased from 42988 to 8188 bytes, it does not
   affect normal playback (block size 1024), was tested using
   metronome (block size 46080). This change is needed because the
   new code commits d-cache range instead of commiting the whole
   d-cache, maximum time spent commiting the range should be
   limited, CHUNK_SIZE can be decreased even more if necessary.

 - pcm_play_dma_start() calls pcm_play_dma_stop() to stop the
   channel when it is running (metronome replays the tick sound
   without stopping the channel).

 - pcm_play_dma_get_peak_buffer(): same as actual SVN function but
   returns samples count instead of bytes count.
   TODO: AFAIK, actually this function is not used in RB. Not tested,
   but probably this function will fail because it returns pointers
   to the internal double buffer.

LCD update:

 - suppresses lcd_wakeup semaphore and uses yield()

Change-Id: I79b8aa47a941e0dd91847150618f3f7f676c26ef
2015-10-07 06:15:03 +02:00
Cástor Muñoz
609cde9468 iPod Classic: s5l8702 GPIO interrupt controller.
This patch implements a simple API to use the external interrupt
hardware present on s5l8702 (GPIO interrupt controller). This
GPIOIC has been fully tested using emcore apps.

Code is based on openiBoot project, there are a few modifications
to optimize space considering we will only use two or three external
interrupts. The API compiles and works, but has been never used,
therefore probably will need some changes to the final version.

External interrupts are necessary for jack remote+mic controller
(see iAP Interface Specifiction: Headphone Remote and Mic System),
this controller is located at I2C bus address 0x72, there is a IRQ
line for remote button press/release events routed to GPIO E6. At
this moment, the functionallity of this controller has been
extensively tested using emcore, getting a lot of information about
how it works. Microphone is already working on RB, jack accessory
detection and button events are work in progress.

PMU IRQ line is also routed to GPIO F3, it signals many events:
holdswitch, usb plug, wall adapter, low battery... The use of PMU
interrupts is the orthodox way of doing things, at this moment
there is no work done in this direction, there are a lot of PMU
events and i think it is a matter of discursion what to do and how.

Change-Id: Icc2e48965e664ca56c9518d84a81c9d9fdd31736
2015-10-07 06:15:03 +02:00
Cástor Muñoz
bfb63f8017 iPod Classic: minor modifications in TIMER
The current behaviour should not change.

Change-Id: Ia8f44cdccf41dbc3881722f9aebab91de51a9bc5
2014-12-08 03:07:44 +01:00
Cástor Muñoz
57969698ce iPod Classic: update timer API using 32-bit timers.
Change-Id: I49dab8ae955a339ad0a27402fa21caa411c4ecf6
Reviewed-on: http://gerrit.rockbox.org/1032
Reviewed-by: Marcin Bukat <marcin.bukat@gmail.com>
2014-11-16 14:18:32 +01:00
Cástor Muñoz
a85780bacc Classic/6G: CPU frequency/voltage scaling
This patch implements HAVE_ADJUSTABLE_CPU_FREQ, it modifies the
following parameters when CPU is unboosted:

- s5l8702 voltage is decreased: 1.200V -> 1.050V
- CPU frequency is divided by 4: 216MHz -> 54MHz
- AHB frequency is divided by 2: 108MHz -> 54MHz

Change-Id: I2285b83efb7e1567864ac288f2d4ba55f058f7c5
2012-03-31 01:18:15 +02:00
Bertrik Sikken
0dfce1972b ipod6g: make functions and variables static where possible
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@29767 a1c6a512-1295-4272-9138-f99709370657
2011-04-22 21:39:17 +00:00
Michael Sparmann
30fb680a4d iPod Classic CE-ATA Support (Part 4 of 4: S5L8702 ATA driver)
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@29448 a1c6a512-1295-4272-9138-f99709370657
2011-02-27 22:47:55 +00:00
Michael Sparmann
2007d67bce Fix red (remove accidentally committed debugging code)
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@29269 a1c6a512-1295-4272-9138-f99709370657
2011-02-10 00:35:46 +00:00
Michael Sparmann
fdf092ebd3 iPod Classic: Do boosting the right way round ;-)
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@29268 a1c6a512-1295-4272-9138-f99709370657
2011-02-10 00:30:42 +00:00
Michael Sparmann
44870b7415 iPod Classic: Enable boosting by switching the CPU between 1x and 2x AHB clock
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@29265 a1c6a512-1295-4272-9138-f99709370657
2011-02-09 21:45:57 +00:00
Michael Sparmann
152847977a New port: iPod Classic (also known as iPod 6G/6.5G/7G)
Major known issues:
- No bootloader yet
- No support for the first-generation 160GB CE-ATA hard disk drive yet
- Audio playback is slow, only FLAC seems to reach realtime


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@28953 a1c6a512-1295-4272-9138-f99709370657
2011-01-02 23:16:27 +00:00