Colin Cross [Mon, 5 Apr 2010 20:30:14 +0000 (13:30 -0700)]
serial: Add tegra_hsuart driver
Change-Id: Ic2d0a43ac3597c8a270758af6ea3090acdd0fe7f
Signed-off-by: Colin Cross <ccross@android.com>
Dmitry Shmidt [Fri, 13 Aug 2010 01:17:47 +0000 (18:17 -0700)]
mmc: sdhci-tegra: Always call sdhci suspend/resume functions
Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>
Dmitry Shmidt [Fri, 13 Aug 2010 01:08:40 +0000 (18:08 -0700)]
mmc: sdhci: Skip mmc suspend/resume ops for SDIO device,
enable/disable sdc irq instead of request/free,
mask all sdc interrupts on suspend
Change-Id: I3fb137363c6e639882b796aff8b80784c5256a71
Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>
Gary King [Fri, 16 Jul 2010 00:11:32 +0000 (17:11 -0700)]
mmc: subtract boot sectors from disk size for eMMC 4.3+ devices
the csd sector count reported by eMMC 4.3+ cards includes the boot
partition size; subtract this from the size reported to the disk
since the boot partition is inaccessible
Change-Id: I601b83aa0159b7aa446409ea8c945b256dd0b5b1
Signed-off-by: Gary King <gking@nvidia.com>
Gary King [Thu, 15 Jul 2010 03:41:23 +0000 (20:41 -0700)]
tegra-sdhci: treat -1 as invalid card detect GPIO
0 is a valid GPIO number (GPIO_PA0), so the check in the tegra
SDHCI driver for a valid card detect pin should compare against -1
instead
Change-Id: I47ad31eaf89472b2e6938978d72a9d0b92a74958
Signed-off-by: Gary King <gking@nvidia.com>
Dmitry Shmidt [Thu, 1 Jul 2010 21:47:07 +0000 (14:47 -0700)]
drivers: mmc: sdhci-tegra: Add suspend/resume processing
Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>
Colin Cross [Thu, 11 Mar 2010 04:42:35 +0000 (20:42 -0800)]
mmc: sdhci: Initial Tegra sdhci driver
Change-Id: I6a761b978224fe91dc7928ef5595af2cbd66fc92
Signed-off-by: Colin Cross <ccross@android.com>
Erik Gilling [Tue, 24 Aug 2010 23:43:44 +0000 (16:43 -0700)]
video: tegra: include nvhost.h instead of nvhost_dev.h
Signed-off-by: Erik Gilling <konkers@android.com>
Erik Gilling [Tue, 24 Aug 2010 23:13:39 +0000 (16:13 -0700)]
video: tegra: set window size on mode change
otherwise it's hardcoded by the platform-data
Signed-off-by: Erik Gilling <konkers@android.com>
Erik Gilling [Tue, 24 Aug 2010 04:36:56 +0000 (21:36 -0700)]
video: tegra: add hdmi output support
Signed-off-by: Erik Gilling <konkers@android.com>
Erik Gilling [Tue, 24 Aug 2010 04:28:12 +0000 (21:28 -0700)]
video: tegra: add hotplug display support
This is needed for HDMI.
Signed-off-by: Erik Gilling <konkers@android.com>
Erik Gilling [Tue, 17 Aug 2010 23:16:19 +0000 (16:16 -0700)]
video: add fb_edid_add_monspecs for parsing extended edid information
Modern monitors/tvs have more extended EDID information blocks which can
contain extra detailed modes. This adds a fb_edid_add_monspecs function
which drivers can use to parse those additions blocks.
Signed-off-by: Erik Gilling <konkers@android.com>
Erik Gilling [Fri, 6 Aug 2010 02:10:37 +0000 (19:10 -0700)]
video: tegra: add host bus support to display controller
Signed-off-by: Erik Gilling <konkers@android.com>
Erik Gilling [Tue, 24 Aug 2010 04:58:20 +0000 (21:58 -0700)]
video: tegra: add skeleton host bus support
The host (or host1x) bus sits between the cpu core and the 3d, 2d, camera,
display, and mpeg encoder functions. It contains provides DMA channels,
hardware mutexes, and synchronization points.
Signed-off-by: Erik Gilling <konkers@android.com>
Iliyan Malchev [Fri, 20 Aug 2010 22:09:59 +0000 (15:09 -0700)]
[ARM] tegra: tegra_i2s_audio: remove debugfs, add sysfs interface
-- Removed debugfs interface for toggling DMA
-- Added it under sysfs
-- Also added attributes for settings the attention levels of the i2s fifos
Signed-off-by: Iliyan Malchev <malchev@google.com>
Iliyan Malchev [Tue, 24 Aug 2010 01:42:07 +0000 (18:42 -0700)]
[ARM] tegra: tegra_i2s_audio: do not reset the i2s fifo unnecessarily
This patch removes redundant i2s fifo resets, which also cause blips on playback.
It also moves the fifo attention levels to struct audio_stream.
Signed-off-by: Iliyan Malchev <malchev@google.com>
Iliyan Malchev [Fri, 20 Aug 2010 22:11:48 +0000 (15:11 -0700)]
[ARM] tegra: tegra_i2s_audio: allow preloading of the tx fifo with data
Add an ioctl to allow the TX fifo to be loaded with data before playback
starts. Playback can then be started by calling write() on the FIFO, even
with a length of 0. This will cause the pending data to be played out.
Signed-off-by: Iliyan Malchev <malchev@google.com>
Iliyan Malchev [Wed, 18 Aug 2010 01:36:41 +0000 (18:36 -0700)]
[ARM] tegra: tegra_i2s_audio: clean up handling of state
-- Use consistently the various state flags:
-- active is set only when there is a read or write in flight
-- recording_canncelled is set only when recording is stopped via the ioctl()
-- dma_has_it is used to determine whether DMA is already in flight; do not
use the state of the fifos for this (e.g., if the TX fifo is empty, do not
assume that playback is stopped)
-- added a stop_completion (implemented for readers only) so that readers
closing a stream can wait until DMA or PIO transactions are stopped
-- Split /dev/audio0_{in,out} into /dev/audio0_{in,in_ctl,out,out_ctl} where the
_ctl versions have the ioctl()s
-- Introduced an error count per audio_stream; error count is reset on open, can
be read back & reset through an ioctl
Signed-off-by: Iliyan Malchev <malchev@google.com>
Iliyan Malchev [Tue, 17 Aug 2010 18:34:39 +0000 (11:34 -0700)]
[ARM] tegra: tegra_i2s_audio: configure in/out buffer sizes from user space
-- Add ioctls for configuring buffer, threshold, and DMA-transaction sizes from
user space.
-- Buffer sizes are provided in orders of magnitude.
-- Allocate max-sized buffers during probe, and allow the user to resize them
only within the original allocation, to avoid the risk from kmalloc failing
due to kernel-heap fragmentation, and also to avoid race conditions on DMA
shut-down.
-- In tegra_audio_write(), moved the call to start_playback_if_necessary()
immediately after writing to the fifo. Otherwise, when the fifo size is
smaller than what the user is trying to write, the user will block before
playback is started.
-- Silenced printk spew on spinning on i2s registers after transactions are
completed.
-- Cleaned up a 80-col style violation in downsample()
Signed-off-by: Iliyan Malchev <malchev@google.com>
Iliyan Malchev [Tue, 17 Aug 2010 16:56:18 +0000 (09:56 -0700)]
[ARM] tegra: tegra_i2s_audio: combine audio_in_stream and audio_out_stream
Signed-off-by: Iliyan Malchev <malchev@google.com>
Benoit Goby [Fri, 20 Aug 2010 05:01:58 +0000 (22:01 -0700)]
usb: host: Add support for suspend and bus suspend
On suspend, use phy_suspend save the phy registers so that there is
no need to reset the controller and re-enumerate devices on resume.
Change-Id: I00fe5b87a1b319044724494b8e635b540088a38b
Signed-off-by: Benoit Goby <benoit@android.com>
Benoit Goby [Fri, 20 Aug 2010 04:42:23 +0000 (21:42 -0700)]
usb: gadget: Reset the controller when cable is unplugged
Reset the controller when the cable is unplugged to leave it in the idle
state. The OTG driver will reconfigure it on vbus/id pin detection.
Change-Id: I87903ec86f3c35af64a141f27a34cc0720a61b08
Signed-off-by: Benoit Goby <benoit@android.com>
Benoit Goby [Fri, 20 Aug 2010 04:28:59 +0000 (21:28 -0700)]
[ARM] tegra: usb_phy: Add phy_suspend and phy_clk_disable
phy_suspend save the phy registers and power it off. phy_clk_disable
disable the phy clock to put the phy in low power mode.
Change-Id: If5665ec96beec9441fae3b737923dbe69c86e650
Signed-off-by: Benoit Goby <benoit@android.com>
Benoit Goby [Tue, 10 Aug 2010 03:49:09 +0000 (20:49 -0700)]
usb: gadget: In OTG mode, power down the controller on probe
The OTG driver will power it up on ID pin detection. This avoids
race conditions when the device is powered on with the otg cable
attached.
Change-Id: I6bd5f1d73284f9b8534ef3dfb936b81a9400fa5b
Signed-off-by: Benoit Goby <benoit@android.com>
Colin Cross [Sun, 22 Aug 2010 01:23:34 +0000 (18:23 -0700)]
[ARM] tegra: ventana: Add pmu device
Change-Id: I5fa227893cc64b900ee749d292cb09a728f9ec2f
Signed-off-by: Colin Cross <ccross@google.com>
Colin Cross [Sun, 22 Aug 2010 01:23:11 +0000 (18:23 -0700)]
[ARM] tegra: harmony: Add pmu device
Originally fixed by Will Deacon.
Change-Id: I2319d269f645766597100f91b2086fde4535c0fd
Signed-off-by: Colin Cross <ccross@google.com>
Colin Cross [Sun, 22 Aug 2010 01:21:23 +0000 (18:21 -0700)]
[ARM] tegra: Add pmu to common devices
Originally fixed by Will Deacon.
Change-Id: I504f8109bedd1eea4bf637395913726a98eb6bb8
Signed-off-by: Colin Cross <ccross@google.com>
Colin Cross [Fri, 20 Aug 2010 05:19:53 +0000 (22:19 -0700)]
[ARM] tegra: cpufreq: Adjust twds on frequency scaling
Change-Id: I8d187b861e18dfefcbf4566f4c695dfd1e17fe98
Signed-off-by: Colin Cross <ccross@google.com>
Colin Cross [Fri, 20 Aug 2010 05:08:06 +0000 (22:08 -0700)]
[ARM] tegra: localtimer: Pass target twd rate
Change-Id: I4d57462045732f1f219a62c1be911437adf9a077
Signed-off-by: Colin Cross <ccross@google.com>
Colin Cross [Fri, 20 Aug 2010 05:07:43 +0000 (22:07 -0700)]
[ARM] twd: Allow twd rescaling to match cpu frequency
The clock to the ARM TWD local timer scales with the cpu
frequency. To allow the cpu frequency to change while
maintaining a constant TWD frequency, pick a lower target
frequency for the TWD and use the prescaler to divide down
to the closest lower frequency.
This patch provides a new initialization function that takes
a target TWD frequency and the relation between the cpu
clock and the TWD clock, required to be an integer divider
>= 2 by the ARM spec. It also provides a function to be
called from cpufreq drivers to set the prescaler whenever
the cpu frequency changes.
Also fixes a typo in the printk of the calibrated frequency.
Change-Id: I3fa8ef718ff5518170f1b2bab29efe960741853e
Signed-off-by: Colin Cross <ccross@google.com>
Iliyan Malchev [Thu, 12 Aug 2010 01:19:47 +0000 (18:19 -0700)]
[ARM] tegra_i2s_audio: add software downsampling for recorded data + fixes
downsampling:
-- add ioctl()s to downsample recorded data
-- supported frequencies are 8kHz, 11.025kHz, 22.05kHz, and 44.1kHz
-- downsamping to stereo and mono
-- default is 11.025kHz mono
fixes:
-- fix crashes from dequeuing DMA requests twice
Signed-off-by: Iliyan Malchev <malchev@google.com>
Erik Gilling [Thu, 12 Aug 2010 02:53:36 +0000 (19:53 -0700)]
video: tegra: include linux/pm.h in mach/tegradc.h
Signed-off-by: Erik Gilling <konkers@android.com>
Erik Gilling [Thu, 12 Aug 2010 01:52:50 +0000 (18:52 -0700)]
video: tegra: add init/suspend/resume hooks to outputs
Allows board specific code to handle panel init.
Signed-off-by: Erik Gilling <konkers@android.com>
Benoit Goby [Wed, 4 Aug 2010 04:27:49 +0000 (21:27 -0700)]
[ARM] tegra: usb_phy: Power up/down bias and otg config pad circuitry
On tegra, the UTMIP PAD control logic is common to all utmip phys and
are controlled from usb1. This adds a reference count to turn off the
pads when all utmip phy are off.
Change-Id: I3537d5cc52df929f817e547a79da235394d2c265
Signed-off-by: Benoit Goby <benoit@android.com>
Erik Gilling [Wed, 11 Aug 2010 22:55:49 +0000 (15:55 -0700)]
video: tegra: checkpatch changes
Signed-off-by: Erik Gilling <konkers@android.com>
Benoit Goby [Tue, 10 Aug 2010 23:36:58 +0000 (16:36 -0700)]
usb: host: Fix kernel warning on probe
Change-Id: I6d5b10e047807f9bcb36809672705f8a8b2d11a4
Signed-off-by: Benoit Goby <benoit@android.com>
Iliyan Malchev [Fri, 6 Aug 2010 22:41:26 +0000 (15:41 -0700)]
[ARM] tegra: audio_i2s_audio: clean up & support for recording audio
-- add audio_in_stream (identical to audio_out_stream, may merge them later)
-- add support for DMA and PIO recording
-- add ioctls for /dev/audio<n>_in to start and stop recording
Signed-off-by: Iliyan Malchev <malchev@google.com>
Erik Gilling [Mon, 12 Jul 2010 00:06:28 +0000 (17:06 -0700)]
video: tegra: add tegra display controller driver
Notable ommisions:
* support for anything but lvds panels
* inegration with nvhost driver to sync updates with 3D
* FB physical geometry is not set
* lacks interface to set overlay/window x,y offset
v2 changes:
* suspend/resume support
* move code into drivers/video/tegra/dc
* modularize output support
* clean register dumping, add debugfs register file
* code review feedback
* make the display controller register the framebuffer devices
Signed-off-by: Erik Gilling <konkers@android.com>
Erik Gilling [Mon, 12 Jul 2010 00:00:24 +0000 (17:00 -0700)]
video: tegra: remove old tegra fb driver
Signed-off-by: Erik Gilling <konkers@android.com>
Gary King [Wed, 4 Aug 2010 00:48:42 +0000 (17:48 -0700)]
[ARM] tegra: ventana: add suspend support to ventana
add support for system suspend to ventana; currently LP1 (DRAM in
self-refresh, CPU power-gated, core power active) is used.
Change-Id: Idb223a7da94c3b87ea61e0eef1de77206c4171e4
Signed-off-by: Gary King <gking@nvidia.com>
Gary King [Wed, 4 Aug 2010 00:50:19 +0000 (17:50 -0700)]
[ARM] tegra: ventana: register gpio-keys device
Change-Id: Ie2e59f61facb116a5af88478e231542778af9eaf
Signed-off-by: Gary King <gking@nvidia.com>
Benoit Goby [Tue, 3 Aug 2010 03:22:58 +0000 (20:22 -0700)]
usb: host: Fix tegra EHCI suspend in OTG mode
Change-Id: Ia46830dfbb8bc39de1280b00ce30efe6022f6bd3
Signed-off-by: Benoit Goby <benoit@android.com>
Benoit Goby [Tue, 3 Aug 2010 03:18:11 +0000 (20:18 -0700)]
[ARM] tegra: clock: Add pll_u to common clock init table
Change-Id: I8cdef0406b6fe04551584ae0bae9534b4aec93f6
Signed-off-by: Benoit Goby <benoit@android.com>
Gary King [Tue, 3 Aug 2010 21:54:46 +0000 (14:54 -0700)]
[ARM] tegra: ventana: use tegra_gart_device rather than local definition
Change-Id: I6cb57dd46162c258e32c4946de5a649daff3a79b
Signed-off-by: Gary King <gking@nvidia.com>
Gary King [Tue, 3 Aug 2010 21:54:13 +0000 (14:54 -0700)]
[ARM] tegra: harmony: use tegra_gart_device rather than local definition
Change-Id: I1b456bb5634a75ae1dba2f5bd64ad71b8abdfc53
Signed-off-by: Gary King <gking@nvidia.com>
Gary King [Tue, 3 Aug 2010 21:53:23 +0000 (14:53 -0700)]
[ARM] tegra: add gart device to devices.c
Change-Id: Id748aa37a3c2234a2a618b09dfa963a4b4ac572c
Signed-off-by: Gary King <gking@nvidia.com>
Gary King [Wed, 28 Jul 2010 20:05:45 +0000 (13:05 -0700)]
[ARM] ventana: register i2c, touchscreen & regulator
register I2C controllers, regulator consumers and the panjit
touchscreen platform_device
Change-Id: Ife13c0d86084f26c734dea2c358f8c4fd3e27a8e
Signed-off-by: Gary King <gking@nvidia.com>
Gary King [Wed, 28 Jul 2010 22:03:57 +0000 (15:03 -0700)]
[ARM] tegra: fix packet alignment and padding
tegra's DMA controller expects to start transfers at word boundaries,
and the standard packet alignment (2) was resulting in data corruption
also, provide a full cacheline of padding between skbuffs, to eliminate
coherency issues between the processor and USB networking devices.
Change-Id: Ibb508b512f43c8934d35eb182c8738370b7be585
Signed-off-by: Gary King <gking@nvidia.com>
Iliyan Malchev [Thu, 29 Jul 2010 21:00:54 +0000 (14:00 -0700)]
[ARM] tegra: generic driver for i2s audio (initial implementation)
-- i2s settings are passed through the board file
-- supports playback (no recording yet)
-- works in DMA and PIO (non-DMA) modes (toggle through debugfs)
-- does NOT perform volume and audio-path control
-- exports /dev/audio<n>_{in, out}, where <n> is the i2s interface
-- assumes that i2s is used such that fifo1 is TX and fifo2 is RX
Signed-off-by: Iliyan Malchev <malchev@google.com>
Iliyan Malchev [Thu, 29 Jul 2010 21:02:17 +0000 (14:02 -0700)]
[ARM] tegra: header describing i2s registers
Signed-off-by: Iliyan Malchev <malchev@google.com>
Iliyan Malchev [Thu, 29 Jul 2010 20:57:45 +0000 (13:57 -0700)]
[ARM] tegra: add platform devices for i2s1 and i2s2
Signed-off-by: Iliyan Malchev <malchev@google.com>
Benoit Goby [Thu, 29 Jul 2010 03:16:43 +0000 (20:16 -0700)]
[ARM] tegra: Don't share tegra_usb1_resources
Don't share tegra_usb1_resources as both tegra-udc and ehci1 are loaded
in otg mode.
Change-Id: Id5c9a076572e18662b5d3e7835f638b1cc5a1e07
Signed-off-by: Benoit Goby <benoit@android.com>
Gary King [Wed, 28 Jul 2010 23:22:31 +0000 (16:22 -0700)]
[ARM] tegra: add EHCI and UDC controllers to devices.c
update harmony and ventana to use the common UDC definition, rather
than using the current duplicated definitions
Change-Id: I2e3aca674ab35305a0c516bd22e044382280d05e
Signed-off-by: Gary King <gking@nvidia.com>
Benoit Goby [Wed, 28 Jul 2010 07:10:13 +0000 (00:10 -0700)]
[ARM] tegra: Add USB PHY configuration
Configure board dependant phy settings from the board file.
Change-Id: I29f6ffe0b84a2a6eb55bade1379002f561d92d17
Signed-off-by: Benoit Goby <benoit@android.com>
Benoit Goby [Sat, 24 Jul 2010 00:02:26 +0000 (17:02 -0700)]
[ARM] tegra: Setup USB PHY as recommended by NVIDIA
This fixes enumeration issues with some devices
Change-Id: I6283a6fb49a9e4505ad388cacdd88ecf1bdf1b9d
Signed-off-by: Benoit Goby <benoit@android.com>
Benoit Goby [Thu, 22 Jul 2010 01:05:06 +0000 (18:05 -0700)]
usb: gadget: Fix tegra udc in OTG mode
Check the transceiver state before checking udc->stopped
Enable/disable the PHY and the clock on cable events
Change-Id: Id5a8a1b94f83da8060786f31181014dd1d546fc7
Signed-off-by: Benoit Goby <benoit@android.com>
Benoit Goby [Fri, 9 Jul 2010 00:00:48 +0000 (17:00 -0700)]
usb: host: Add EHCI driver for NVIDIA Tegra SoCs
Change-Id: I53c560f2c31e043f139b840f58786429ded6ec62
Signed-off-by: Benoit Goby <benoit@android.com>
Benoit Goby [Thu, 22 Jul 2010 00:44:44 +0000 (17:44 -0700)]
[ARM] tegra: usb_phy: Add tegra_usb_phy_power_off
Change-Id: If4d66b1a0f1810773b9dc9bcec0e252df947e609
Signed-off-by: Benoit Goby <benoit@android.com>
Gary King [Wed, 14 Jul 2010 01:30:59 +0000 (18:30 -0700)]
[ARM] tegra: harmony/ventana: register additional devices
register GART, pda_power, and OTG devices
Change-Id: I6dec5f765494cdc96f3395cf32fd962c87bf70b7
Signed-off-by: Gary King <gking@nvidia.com>
Gary King [Wed, 14 Jul 2010 00:16:23 +0000 (17:16 -0700)]
[ARM] tegra: ventana: add initial support for Ventana
Change-Id: I1993fda7628c623d53fd2c97649ec3533ad790e2
Signed-off-by: Gary King <gking@nvidia.com>
Gary King [Thu, 15 Jul 2010 17:06:40 +0000 (10:06 -0700)]
[ARM] tegra: harmony: add sdhci0 controller (wlan)
Change-Id: I6000b1d34e35d9291cae80e4508518d0059397f8
Signed-off-by: Gary King <gking@nvidia.com>
Colin Cross [Mon, 4 Oct 2010 06:37:45 +0000 (23:37 -0700)]
[ARM] tegra: suspend: Add iovmm suspend
Signed-off-by: Colin Cross <ccross@android.com>
Gary King [Sat, 26 Jun 2010 01:39:58 +0000 (18:39 -0700)]
[ARM] tegra: add I/O virtual memory manager interface (iovmm)
The Tegra IOVMM is an interface to allow device drivers and subsystems in
the kernel to manage the virtual memory spaces visible to I/O devices.
The interface has been designed to be scalable to allow for I/O virtual
memory hardware which exists in one or more limited apertures of the address
space (e.g., a small aperture in physical address space which can perform
MMU-like remapping) up to complete virtual addressing with multiple
address spaces and memory protection.
The interface has been designed to be similar to the Linux virtual memory
system; however, operations which would be difficult to implement or
nonsensical for DMA devices (e.g., copy-on-write) are not present, and
APIs have been added to allow for management of multiple simultaneous
active address spaces.
The API is broken into four principal objects: areas, clients, domains and
devices.
Areas
=====
An area is a contiguous region of the virtual address space which can be
filled with virtual-to-physical translations (and, optionally, protection
attributes). The virtual address of the area can be queried and used for
DMA operations by the client which created it.
As with the Linux vm_area structures, it is the responsibility of whichever
code creates an area to ensure that it is populated with appropriate
translations.
Domains
=======
A domain in the IOVMM system is similar to a process in a standard CPU
virtual memory system; it represents the entire range of virtual addresses
which may be allocated and used for translation. Depending on hardware
capabilities, one or more domains may be resident and available for
translation. IOVMM areas are allocated from IOVMM domains.
Whenever a DMA operation is performed to or from an IOVMM area, its parent
domain must be made resident prior to commencing the operation.
Clients
=======
I/O VMM clients represent any entity which needs to be able to allocate
and map system memory into I/O virtual space. Clients are created by name
and may be created as part of a "share group," where all clients created
in the same share group will observe the same I/O virtual space (i.e., all
will use the same IOVMM domain). This is similar to threads inside a process
in the CPU virtual memory manager.
The callers of the I/O VMM system are responsible for deciding on the
granularity of client creation and share group definition; depending on the
specific usage model expected by the caller, it may be appropriate to create
an IOVMM client per task (if the caller represents an ioctl'able interface
to user land), an IOVMM client per driver instance, a common IOVMM client
for an entire bus, or a global IOVMM client for an OS subsystem (e.g., the DMA
mapping interface).
Each client is responsible for ensuring that its IOVMM client's translation is
resident on the system prior to performing DMA operations using the IOVMM
addresses. This is accomplished by preceding all DMA operations for the client
with a call to tegra_iovmm_client_lock (or tegra_iovmm_client_trylock),
and following all operations (once complete) with a call to
tegra_iovmm_client_unlock. In this regard, clients are cooperatively context-
switched, and are expected to behave appropriately.
Devices
=======
I/O VMM devices are the physical hardware which is responsible for performing
the I/O virtual-to-physical translation.
Devices are responsible for domain management: the mapping and unmapping
operations needed to make translations resident in the domain (including
any TLB shootdown or cache invalidation needed to ensure coherency), locking
and unlocking domains as they are made resident by clients into the devices'
address space(s), and allocating and deallocating the domain objects.
Devices are responsible for the allocation and deallocation of domains to
allow coalescing of multiple client share groups into a single domain. For
example, if the device's hardware only allows a single address space to
be translated system-wide, performing full flushes and invalidates of the
translation at every client switch may be prohibitively expensive. In these
circumstances, a legal implementation of the IOVMM interface includes
returning the same domain for all clients on the system (regardless of
the originally-specified share group).
In this respect, a client can be assured that it will share an address space
with all of the other clients in its share group; however, it may also share
this address space with other clients, too.
Multiple devices may be present in a system; a device should return a NULL
domain if it is incapable of servicing the client when it is asked to
allocate a domain.
----------------------------------------------------------------------------
IOVMM Client API
================
tegra_iovmm_alloc_client - Called to create a new IOVMM client object; the
implementation may create a new domain or return an existing one depending on
both the device and the share group.
tegra_iovmm_free_client - Frees a client.
tegra_iovmm_client_lock - Makes a client's translations resident in the IOVMM
device for subsequent DMA operations. May block if the device is incapable
of context-switching the client when it is called. Returns -EINTR if the
waiting thread is interrupted before the client is locked.
tegra_iovmm_client_trylock - Non-blocking version of tegra_iovmm_client_lock
tegra_iovmm_client_unlock - Called by clients after DMA operations on IOVMM-
translated addresses is complete; allows IOVMM system to context-switch the
current client out of the device if needed.
tegra_iovmm_create_vm - Called to allocate an IOVMM area. If
lazy / demand-loading of pages is desired, clients should supply a pointer
to a tegra_iovmm_area_ops structure providing callback functions to load, pin
and unpin the physical pages which will be mapped into this IOVMM region.
tegra_iovmm_get_vm_size - Called to query the total size of an IOVMM client
tegra_iovmm_free_vm - Called to free a IOVMM area, releasing any pinned
physical pages mapped by it and to decommit any resources (memory for
PTEs / PDEs) required by the VM area.
tegra_iovmm_vm_insert_pfn - Called to insert an exact pfn (system memory
physical page) into the area at a specific virtual address. Illegal to call
if the IOVMM area was originally created with lazy / demand-loading.
tegra_iovmm_zap_vm - Called to mark all mappings in the IOVMM area as
invalid / no-access, but continues to consume the I/O virtual address space.
For lazy / demand-loaded IOVMM areas, a zapped region will not be reloaded
until it has been unzapped; DMA operations using the affected translations
may fault (if supported by the device).
tegra_iovmm_unzap_vm - Called to re-enable lazy / demand-loading of pages
for a previously-zapped IOVMM area.
tegra_iovmm_find_area_get - Called to find the IOVMM area object
corresponding to the specified I/O virtual address, or NULL if the address
is not allocated in the client's address space. Increases the reference count
on the IOVMM area object
tegra_iovmm_area_get - Called to increase the reference count on the IOVMM
area object
tegra_iovmm_area_put - Called to decrease the reference count on the IOVMM
area object
IOVMM Device API
================
tegra_iovmm_register - Called to register a new IOVMM device with the IOVMM
manager
tegra_iovmm_unregister - Called to remove an IOVMM device from the IOVMM
manager (unspecified behavior if called while a translation is active and / or
in-use)
tegra_iovmm_domain_init - Called to initialize all of the IOVMM manager's
data structures (block trees, etc.) after allocating a new domain
IOVMM Device HAL
================
map - Called to inform the device about a new lazy-mapped IOVMM area. Devices
may load the entire VM area when this is called, or at any time prior to
the completion of the first read or write operation using the translation.
unmap - Called to zap or to decommit translations
map_pfn - Called to insert a specific virtual-to-physical translation in the
IOVMM area
lock_domain - Called to make a domain resident; should return 0 if the
domain was successfully context-switched, non-zero if the operation can
not be completed (e.g., all available simultaneous hardware translations are
locked). If the device can guarantee that every domain it allocates is
always usable, this function may be NULL.
unlock_domain - Releases a domain from residency, allows the hardware
translation to be used by other domains.
alloc_domain - Called to allocate a new domain; allowed to return an
existing domain
free_domain - Called to free a domain.
Change-Id: Ic65788777b7aba50ee323fe16fd553ce66c4b87c
Signed-off-by: Gary King <gking@nvidia.com>
Benoit Goby [Wed, 30 Jun 2010 01:24:09 +0000 (18:24 -0700)]
usb: gadget: Use USB PHY api
Signed-off-by: Benoit Goby <benoit@android.com>
Benoit Goby [Wed, 30 Jun 2010 01:09:26 +0000 (18:09 -0700)]
[ARM] tegra: add API for enabling the USB PHYs
Moved usb phy initialization code
Added support for usb3 utmi phy
Updated the registers as recommended by Nvidia to be MUCH closer to passing the integrity tests
TODO: Add support for usb2 ulpi phy
Signed-off-by: Benoit Goby <benoit@android.com>
Gary King [Mon, 28 Jun 2010 22:01:43 +0000 (15:01 -0700)]
[ARM] tegra: harmony: remove hard-coded partition table
use the partition information provided on the kernel command line rather
than a fixed table that is subject to change.
Change-Id: I650f634bf49b8658debb75535e94f2a497ef3432
Signed-off-by: Gary King <gking@nvidia.com>
Gary King [Mon, 28 Jun 2010 22:00:10 +0000 (15:00 -0700)]
mtd/tegra_nand: don't ignore return value for add_mtd_partitions
when the mtd partition command line format is used, ignoring the
return value left err set to the number of partitions, which was
later interpreted as an error return code for tegra_nand_probe,
which caused the MTD master to be unregistered (ultimately causing
NULL pointer derefs when mounting the root partition).
Change-Id: Icebfb295810554617c56deeafc91bc22cc43bb35
Signed-off-by: Gary King <gking@nvidia.com>
Colin Cross [Sat, 15 May 2010 02:30:34 +0000 (19:30 -0700)]
[ARM] tegra: harmony: Make board init calls explicit
Signed-off-by: Colin Cross <ccross@android.com>
Change-Id: Ic14e8db00f2272de2f4ee4013bb3ab5c1951e7fe
Colin Cross [Sun, 27 Jun 2010 05:37:57 +0000 (22:37 -0700)]
[ARM] tegra: harmony: Add framebuffer platform device
Signed-off-by: Colin Cross <ccross@android.com>
Colin Cross [Sun, 27 Jun 2010 05:36:41 +0000 (22:36 -0700)]
[ARM] tegra: harmony: Remove android platform devices
Signed-off-by: Colin Cross <ccross@android.com>
Benoit Goby [Sat, 5 Jun 2010 02:36:06 +0000 (19:36 -0700)]
usb: gadget: Add support for OTG
Based on work by Nvidia
Signed-off-by: Benoit Goby <benoit@android.com>
Andrei Warkentin [Mon, 28 Jun 2010 22:59:01 +0000 (17:59 -0500)]
w1: master: tegra_w1: Adds generic mach-tegra w1 support.
This adds w1 as a device for mach-tegra boards, fixes wrong
OWR I/O base, and changes OWR clock name.
Change-Id: Idffbdbd05f383ce8e423ee301e197e230db4f2f9
Signed-off-by: Andrei Warkentin <andreiw@motorola.com>
Andrei Warkentin [Mon, 28 Jun 2010 22:56:06 +0000 (17:56 -0500)]
w1: master: tegra_w1: Add initial Tegra W1 master driver
Initial implementation of W1 master driver for Tegra SoCs.
Tested with DS2781 slave driver.
Change-Id: I6cda1ea152d25a789ae6cdca96b710da72884033
Signed-off-by: Andrei Warkentin <andreiw@motorola.com>
Gary King [Wed, 4 Aug 2010 00:46:59 +0000 (17:46 -0700)]
[ARM] tegra: add a header defining tegra 2 wake pads
wakeup from LP0 is latched at the pads rather than in the interrupt
controller; since the pad numbers don't correspond to any other
sane numbering or naming system, provide a new list of defines
to make board code easier to read and maintain
Change-Id: Icf85a5826acc567452c0a2475c5a06ed042f66b3
Signed-off-by: Gary King <gking@nvidia.com>
Colin Cross [Mon, 4 Oct 2010 03:20:10 +0000 (20:20 -0700)]
[ARM] tegra: enable ARM errata 742230
Change-Id: I25b9e7c266147163ca1dcf7619db0580ff9888d8
Signed-off-by: Colin Cross <ccross@android.com>
Colin Cross [Tue, 8 Jun 2010 03:50:12 +0000 (20:50 -0700)]
video: tegrafb: Enable host1x clock
Change-Id: If1e50ed661493cb06de5e5bbc5ee2b0966297b4f
Signed-off-by: Colin Cross <ccross@android.com>
Iliyan Malchev [Wed, 26 May 2010 21:21:21 +0000 (14:21 -0700)]
[ARM] tegra: add FIQ support
Signed-off-by: Iliyan Malchev <malchev@google.com>
Colin Cross [Sat, 15 May 2010 02:29:18 +0000 (19:29 -0700)]
[ARM] tegra: Move common platform_device_register into boards
Signed-off-by: Colin Cross <ccross@android.com>
Erik Gilling [Thu, 22 Apr 2010 22:59:50 +0000 (15:59 -0700)]
[ARM] tegra: add spi platform devices
Signed-off-by: Erik Gilling <konkers@android.com>
Colin Cross [Mon, 4 Oct 2010 05:06:14 +0000 (22:06 -0700)]
[ARM] tegra: delay: Use immediates instead of literals
Change-Id: I4629398863062e3f80303c84d0fd3b7a4ed6e708
Signed-off-by: Colin Cross <ccross@android.com>
Colin Cross [Sun, 25 Apr 2010 07:29:45 +0000 (00:29 -0700)]
[ARM] tegra: Add arch-specific udelay using TMRUS
Change-Id: If075117642a725ee2ee24a622068274e588a5bc1
Signed-off-by: Colin Cross <ccross@android.com>
Colin Cross [Sun, 25 Apr 2010 07:29:07 +0000 (00:29 -0700)]
[ARM] Add ARCH_PROVIDES_UDELAY config option
Change-Id: Ife690c9d055fc0f17a52d2b29048af5062a664a6
Signed-off-by: Colin Cross <ccross@android.com>
Colin Cross [Thu, 15 Apr 2010 21:06:44 +0000 (14:06 -0700)]
[ARM] tegra: tegrafb: Free irq in probe error case and remove function
v3: Fixes from review by Jaya Kumar
- Free irq in probe error case and remove function
Change-Id: Id6ebb8b79a738d0e3a9ac63fddd785f5652982f7
CC: Jaya Kumar <jayakumar.lkml@gmail.com>
Signed-off-by: Colin Cross <ccross@android.com>
Colin Cross [Mon, 22 Feb 2010 03:39:55 +0000 (19:39 -0800)]
[ARM] tegra: Add framebuffer driver
v2: Fixes from review by Russell King
- Use proper return values
v2: Fixes from review by Jaya Kumar
- Comments on lcd resolution
- Remove stub functions
- Change DUMP_REG to pr_debug
- Add unregister_framebuffer to tegra_plat_remove
v2: from Colin Cross
- adjust debugging
Signed-off-by: Colin Cross <ccross@android.com>
Signed-off-by: Erik Gilling <konkers@android.com>
Erik Gilling [Wed, 31 Mar 2010 20:49:16 +0000 (13:49 -0700)]
[ARM] tegra: move sdhci and i2c to generic devices.c
Change-Id: Ib8d500cb868663d851af5e849815bc2a1312f659
Signed-off-by: Erik Gilling <konkers@android.com>
Todd Poynor [Thu, 16 Sep 2010 22:26:37 +0000 (15:26 -0700)]
tegra: i2c: recover from spurious interrupt storm
Re-init the I2C controller when an IRQ arrives with no
I2C_INT_STATUS bits set to indicate why the interrupt was sent.
Storms of such mystery interrupts are infrequently seen.
Dump some more status when these interrupts arrive. Set an error
for the current request and wake up the requester (rather than
timing out the request or possibly silently ignoring the interrupts).
If the I2C block is inside the DVC, also ACK the DVC I2C transfer
done interrupt in the ISR error return path, as is done for the
normal return path.
Change-Id: I625b5c245aa8d83dbd7ff076b0fb5cc5682fffa1
Signed-off-by: Todd Poynor <toddpoynor@google.com>
Colin Cross [Sat, 7 Aug 2010 02:37:07 +0000 (19:37 -0700)]
i2c: tegra: Add reset in init back
The tegra i2c controller requires a reset after an error. Put the
reset back in the init function.
Signed-off-by: Colin Cross <ccross@google.com>
Colin Cross [Fri, 6 Aug 2010 21:35:00 +0000 (14:35 -0700)]
i2c: tegra: Remove reset during init
Colin Cross [Thu, 29 Jul 2010 23:32:57 +0000 (16:32 -0700)]
i2c: i2c-tegra: Fix warning
Signed-off-by: Colin Cross <ccross@android.com>
Colin Cross [Wed, 28 Jul 2010 22:17:50 +0000 (15:17 -0700)]
i2c: i2c-tegra: Fix checkpatch issues, remove debugging
Change-Id: Icba24ebb1753619fcb039cbcf98487627f274744
Signed-off-by: Colin Cross <ccross@android.com>
Gary King [Wed, 14 Jul 2010 01:56:40 +0000 (18:56 -0700)]
i2c-tegra: add support for virtual busses with dynamic pinmuxing
this adds support for dynamically reprogramming the I2C controller's
pin mux on transaction boundaries to enable one controller to be
registered as multiple I2C bus adapters with the kernel. this allows
platform designers an additional tool to resolve clock rate, I/O
voltage and electrical loading restrictions between the platform's
peripherals.
the i2c-tegra platform data is extended to support this; platforms
which use this feature should pass in the number of busses which
should be created for each controller, the starting adapter number
to use and the clock rate and pin mux for each virtual bus.
Change-Id: I57a96deb7b7b793222ec3f8cc3a941917a023609
Signed-off-by: Gary King <gking@nvidia.com>
Colin Cross [Fri, 23 Jul 2010 19:55:12 +0000 (12:55 -0700)]
i2c: tegra: Prevent i2c transactions after suspend
The cpufreq driver suspends very late, and may cause an i2c
transaction when the clk api calls the dvfs api, which calls
the regulator api, which calls i2c. Return an error if an
i2c transaction is requested after suspend has been called.
Change-Id: I4d92eb9c1f558758097e2dafda6fc02addf4e185
Signed-off-by: Colin Cross <ccross@android.com>
Colin Cross [Mon, 14 Jun 2010 23:09:46 +0000 (16:09 -0700)]
i2c: busses: i2c-tegra: Set bus speed in platform data
Change-Id: Iebc1ad5cc56d09f1df99d09dd6456c24c93cdb0b
Signed-off-by: Colin Cross <ccross@android.com>
Colin Cross [Mon, 14 Jun 2010 22:06:18 +0000 (15:06 -0700)]
i2c: busses: i2c-tegra: Fix bus clock rate
Change-Id: I186a7b7474c3d2504e2a4d7c1308706bb1b53004
Signed-off-by: Colin Cross <ccross@android.com>
Colin Cross [Fri, 14 May 2010 02:08:32 +0000 (19:08 -0700)]
[ARM] tegra: i2c: Fix i2c driver behavior on timeout/nack
Change-Id: Ia0968df649fa56d93cf3522d983fde16413e854d
Signed-off-by: Colin Cross <ccross@android.com>
Colin Cross [Thu, 22 Apr 2010 07:03:06 +0000 (00:03 -0700)]
[ARM] tegra: i2c: Disable clock when idle, fix dvc
Change-Id: Idca4c392134640f611ccf10edfd28fea102742fb
Signed-off-by: Colin Cross <ccross@android.com>
Colin Cross [Fri, 19 Mar 2010 01:01:37 +0000 (18:01 -0700)]
[ARM] tegra: Add i2c support
Signed-off-by: Colin Cross <ccross@android.com>
Erik Gilling [Fri, 26 Mar 2010 20:31:27 +0000 (13:31 -0700)]
usb: gadget: add utmip phy into to fsl_tegra_udc
Signed-off-by: Erik Gilling <konkers@android.com>
Colin Cross [Mon, 15 Mar 2010 22:06:29 +0000 (15:06 -0700)]
[ARM] tegra: HACK Enable uart and clocks in uncompress.h
Signed-off-by: Colin Cross <ccross@android.com>
Erik Gilling [Tue, 16 Mar 2010 03:40:51 +0000 (20:40 -0700)]
[ARM] tegra: add platform devices to harmony board file
Signed-off-by: Erik Gilling <konkers@android.com>