Ricardo Neri 9c0b842036 OMAPDSS: Provide an interface for audio support ... There exist several display technologies and standards that support audio as well. Hence, it is relevant to update the DSS device driver to provide an audio interface that may be used by an audio driver or any other driver interested in the functionality. The audio_enable function is intended to prepare the relevant IP for playback (e.g., enabling an audio FIFO, taking in/out of reset some IP, enabling companion chips, etc). It is intended to be called before audio_start. The audio_disable function performs the reverse operation and is intended to be called after audio_stop. While a given DSS device driver may support audio, it is possible that for certain configurations audio is not supported (e.g., an HDMI display using a VESA video timing). The audio_supported function is intended to query whether the current configuration of the display supports audio. The audio_config function is intended to configure all the relevant audio parameters of the display. In order to make the function independent of any specific DSS device driver, a struct omap_dss_audio is defined. Its purpose is to contain all the required parameters for audio configuration. At the moment, such structure contains pointers to IEC-60958 channel status word and CEA-861 audio infoframe structures. This should be enough to support HDMI and DisplayPort, as both are based on CEA-861 and IEC-60958. The omap_dss_audio structure may be extended in the future if required. The audio_enable/disable, audio_config and audio_supported functions could be implemented as functions that may sleep. Hence, they should not be called while holding a spinlock or a readlock. The audio_start/audio_stop function is intended to effectively start/stop audio playback after the configuration has taken place. These functions are designed to be used in an atomic context. Hence, audio_start should return quickly and be called only after all the needed resources for audio playback (audio FIFOs, DMA channels, companion chips, etc) have been enabled to begin data transfers. audio_stop is designed to only stop the audio transfers. The resources used for playback are released using audio_disable. A new enum omap_dss_audio_state is introduced to help the implementations of the interface to keep track of the audio state. The initial state is _DISABLED; then, the state transitions to _CONFIGURED, and then, when it is ready to play audio, to _ENABLED. The state _PLAYING is used when the audio is being rendered. Signed-off-by: Ricardo Neri <ricardo.neri@ti.com>		2012-05-11 15:13:50 +03:00
..
ABI	Merge branch 'for-3.4/drivers' of git://git.kernel.dk/linux-block	2012-04-13 18:45:13 -07:00
accounting	Documentation: update cgroupfs mount point	2011-06-15 21:52:50 -07:00
acpi	Update documentation for parameter *notrigger* in einj.txt	2012-03-30 03:30:19 -04:00
aoe	Documentation: remove references to /etc/modprobe.conf	2012-03-30 16:03:15 -07:00
arm	OMAPDSS: Provide an interface for audio support	2012-05-11 15:13:50 +03:00
auxdisplay
backlight	backlight: new backlight driver for LP855x devices	2012-03-23 16:58:33 -07:00
blackfin	doc: fix broken references	2011-09-27 18:08:04 +02:00
block	Documentation: drop as block elevator reference in switching-sched.txt	2011-11-04 12:01:48 -07:00
blockdev	Documentation: remove references to /etc/modprobe.conf	2012-03-30 16:03:15 -07:00
cdrom	doc: fix broken references	2011-09-27 18:08:04 +02:00
cgroups	memcg: fix up documentation on global LRU	2012-04-12 13:12:11 -07:00
connector
console
cpu-freq	Doc: cpufreq: Fix typo and outdated line	2011-11-08 10:23:29 +01:00
cpuidle	cpuidle: add a sysfs entry to disable specific C state for debug purpose.	2012-03-30 01:52:58 -04:00
cris
crypto
development-process	Documentation: Update stable address	2011-12-12 14:14:31 -08:00
device-mapper	dm: add verity target	2012-03-28 18:43:38 +01:00
devicetree	ARM: SoC fixes for 3.4-rc2	2012-04-05 22:13:39 -07:00
DocBook	Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media	2012-04-21 12:43:23 -07:00
driver-model	Merge remote-tracking branches 'regulator/topic/devm' and 'regulator/topic/stub' into regulator-next	2012-03-18 21:38:28 +00:00
dvb	[media] lmedm04 RS2000 Firmware details	2012-03-19 14:55:55 -03:00
early-userspace
EDID	drm: allow loading an EDID as firmware to override broken monitor	2012-03-20 10:09:28 +00:00
fault-injection	fault-injection: update documentation with the mmc module param	2011-10-26 16:32:13 -04:00
fb	Documentation: remove references to /etc/modprobe.conf	2012-03-30 16:03:15 -07:00
filesystems	typo fix in Documentation/filesystems/vfs.txt	2012-04-09 01:39:24 -04:00
firmware_class	firmware: Update hotplug script	2010-08-05 13:53:34 -07:00
frv	doc: fix broken references	2011-09-27 18:08:04 +02:00
hid	HID: Move hiddev.txt to the new Documentation/hid directory	2011-03-22 11:43:51 +01:00
hwmon	hwmon: (k10temp) Add support for AMD Trinity CPUs	2012-04-01 10:25:56 -07:00
i2c	Documentation: remove references to /etc/modprobe.conf	2012-03-30 16:03:15 -07:00
i2o	Documentation: Fix multiple typo in Documentation	2012-03-07 16:08:24 +01:00
ia64	Fix common misspellings	2011-03-31 11:26:23 -03:00
ide	Documentation: remove references to /etc/modprobe.conf	2012-03-30 16:03:15 -07:00
infiniband	Documentation: update broken web addresses.	2010-08-04 15:21:40 +02:00
input	Documentation: input.txt: clarify mousedev 'cat' command syntax	2012-03-30 16:03:15 -07:00
ioctl	Merge branch 'for-next' of git://gitorious.org/kernel-hsi/kernel-hsi	2012-04-02 09:50:40 -07:00
isdn	Documentation: remove references to /etc/modprobe.conf	2012-03-30 16:03:15 -07:00
ja_JP	Merge branch 'driver-core-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6	2011-07-25 23:06:24 -07:00
kbuild	Documentation: mention scripts/diffconfig tool	2012-03-30 16:03:15 -07:00
kdump	[S390] Add s390x description to Documentation/kdump/kdump.txt	2011-12-27 11:27:13 +01:00
ko_KR	driver-core: documentation: fix up Greg's email address	2012-02-15 14:48:01 -08:00
laptops	Documentation: remove references to /etc/modprobe.conf	2012-03-30 16:03:15 -07:00
leds	drivers/leds/leds-lp5521.c: support led pattern data	2012-03-23 16:58:34 -07:00
m68k	Documentation: add pointer to name_to_dev_t for root= values	2011-08-03 14:25:21 -10:00
make	kbuild: introduce HDR_ARCH_LIST for headers_install_all	2010-12-14 22:16:19 +01:00
mips	Fix common misspellings	2011-03-31 11:26:23 -03:00
misc-devices	Fix common misspellings	2011-03-31 11:26:23 -03:00
mmc	mmc: core: Fixup delayed work clock gating patch	2012-01-11 23:58:43 -05:00
mn10300
mtd	Documentation: update broken web addresses.	2010-08-04 15:21:40 +02:00
namespaces
netlabel
networking	doc, net: Update ndo_start_xmit return type and values	2012-04-06 02:43:13 -04:00
nfc	NFC: Driver for NXP Semiconductors PN544 NFC chip.	2011-01-13 08:03:19 -08:00
parisc
PCI	doc: fix broken references	2011-09-27 18:08:04 +02:00
pcmcia	pcmcia: use autoconfiguration feature for ioports and iomem	2010-09-29 17:20:24 +02:00
power	PM / Freezer / Docs: Document the beauty of freeze/thaw semantics	2012-02-09 23:55:49 +01:00
powerpc	Documentation/powerpc/mpc52xx.txt: Checkpatch cleanup	2012-03-18 23:59:34 +01:00
pps	pps: add parallel port PPS signal generator	2011-01-13 08:03:21 -08:00
prctl
pti	Kernel documentation for the PTI feature.	2011-05-13 16:31:00 -07:00
ptp	ptp: Added a brand new class driver for ptp clocks.	2011-05-23 13:01:00 -07:00
rapidio	RapidIO: documentation update	2011-11-02 16:07:02 -07:00
RCU	rcu: Call out dangers of expedited RCU primitives	2012-02-21 09:06:08 -08:00
s390	Documentation: remove references to /etc/modprobe.conf	2012-03-30 16:03:15 -07:00
scheduler	sched: Remove sched_switch	2012-01-27 13:28:53 +01:00
scsi	SCSI updates on 20120331	2012-03-31 13:31:23 -07:00
security	Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security	2012-03-21 13:25:04 -07:00
serial	Documentation: remove references to /etc/modprobe.conf	2012-03-30 16:03:15 -07:00
sh	sh: clkfwk: Kill off unused clk_set_rate_ex().	2010-11-15 18:25:12 +09:00
sound	ALSA: hda/realtek - Add a few ALC882 model strings back	2012-04-11 14:10:57 +02:00
sparc
spi	spi: create a message queueing infrastructure	2012-03-07 19:19:48 -07:00
sysctl	Documentation: add missing tainted bits to Documentation/sysctl/kernel.txt	2012-02-06 16:29:19 -08:00
target	Documentation: Fix typo in tcm_mod_builder.py	2012-02-10 09:52:18 +01:00
telephony	Fix common misspellings	2011-03-31 11:26:23 -03:00
thermal	thermal: Rename generate_netlink_event	2012-01-23 03:15:25 -05:00
timers	doc: fix broken references	2011-09-27 18:08:04 +02:00
trace	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2012-03-20 21:12:50 -07:00
usb	USB documentation: explain lifetime rules for unlinking URBs	2012-04-06 13:54:00 -07:00
vDSO	Document the vDSO and add a reference parser	2011-07-14 17:57:09 -07:00
video4linux	Documentation: remove references to /etc/modprobe.conf	2012-03-30 16:03:15 -07:00
virtual	Merge branch 'kvm-updates/3.4' of git://git.kernel.org/pub/scm/virt/kvm/kvm	2012-03-28 14:35:31 -07:00
vm	mm: move hugepage test examples to tools/testing/selftests/vm	2012-03-28 17:14:37 -07:00
w1	Fix common misspellings	2011-03-31 11:26:23 -03:00
watchdog	watchdog: Add support for WDIOC_GETTIMELEFT IOCTL in watchdog core	2012-03-27 20:15:37 +02:00
wimax
x86	x86-64, doc: Remove int 0xcc from entry_64.S documentation	2011-08-16 08:04:08 -07:00
zh_CN	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	2012-03-20 21:04:47 -07:00
.gitignore
00-INDEX	crc32: move long comment about crc32 fundamentals to Documentation/	2012-03-23 16:58:37 -07:00
applying-patches.txt
atomic_ops.txt	doc: Add load/store guarantees to Documentation/atomic-ops.txt	2011-12-11 10:31:58 -08:00
bad_memory.txt
basic_profiling.txt
binfmt_misc.txt	Documentation: update broken web addresses.	2010-08-04 15:21:40 +02:00
braille-console.txt
bt8xxgpio.txt
btmrvl.txt
BUG-HUNTING
bus-virt-phys-mapping.txt	doc: fix broken references	2011-09-27 18:08:04 +02:00
cachetlb.txt	mm: convert mm->cpu_vm_cpumask into cpumask_var_t	2011-05-25 08:39:21 -07:00
Changes	Documentation/Changes: remove some really obsolete text	2011-07-11 16:48:38 -07:00
circular-buffers.txt
clk.txt	Documentation: common clk API	2012-03-16 20:35:01 +00:00
coccinelle.txt	coccinelle.txt: update documentation to include M= option	2012-01-14 22:25:56 +01:00
CodingStyle	Documentation: CodingStyle: add inline assembly guidelines	2012-03-30 16:03:15 -07:00
cpu-hotplug.txt	documentation: remove references to cpu_*_map.	2012-03-29 15:38:31 +10:30
cpu-load.txt
cputopology.txt	topology/sysfs: Provide book id and siblings attributes	2010-09-09 20:41:25 +02:00
crc32.txt	crc32: move long comment about crc32 fundamentals to Documentation/	2012-03-23 16:58:37 -07:00
dcdbas.txt
debugging-modules.txt
debugging-via-ohci1394.txt
dell_rbu.txt	Fix common misspellings	2011-03-31 11:26:23 -03:00
devices.txt	vhost-net: add module alias (v2.1)	2012-01-13 10:12:23 -08:00
digsig.txt	crypto: digital signature verification support	2011-11-09 12:10:37 +02:00
DMA-API-HOWTO.txt	Documentation/DMA-API-HOWTO.txt: fix misleading example	2011-07-26 16:49:45 -07:00
DMA-API.txt	include/linux/dma-mapping.h: add dma_zalloc_coherent()	2011-11-02 16:07:02 -07:00
DMA-attributes.txt	common: DMA-mapping: add NON-CONSISTENT attribute	2012-03-28 16:36:44 +02:00
dma-buf-sharing.txt	dma-buf: document fd flags and O_CLOEXEC requirement	2012-03-26 11:33:22 +05:30
DMA-ISA-LPC.txt
dmaengine.txt	Documentation: Fix multiple typo in Documentation	2012-03-07 16:08:24 +01:00
dontdiff	Documentation: remove 'mach' from dontdiff file	2012-03-30 16:03:15 -07:00
dynamic-debug-howto.txt	dynamic_debug: process multiple debug-queries on a line	2012-01-24 12:50:36 -08:00
edac.txt	EDAC: Correct scrub rate API	2012-03-19 12:03:58 +01:00
eisa.txt	Fix common misspellings	2011-03-31 11:26:23 -03:00
email-clients.txt	Documentation: email-clients: Add better Thunderbird information	2011-08-13 18:34:03 -07:00
feature-removal-schedule.txt	Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2012-04-12 15:16:26 -07:00
flexible-arrays.txt	flex_array: flex_array_prealloc takes a number of elements, not an end	2011-04-28 16:12:47 -04:00
futex-requeue-pi.txt
gcov.txt
gpio.txt	Documentation/gpio.txt: Explain expected pinctrl interaction	2012-03-12 11:27:07 -06:00
highuid.txt
HOWTO	Documentation: Update stable address	2011-12-12 14:14:31 -08:00
hw_random.txt
hwspinlock.txt	hwspinlock/core: register a bank of hwspinlocks in a single API call	2011-09-21 19:45:34 +03:00
init.txt
initrd.txt
intel_txt.txt	Documentation: update broken web addresses.	2010-08-04 15:21:40 +02:00
Intel-IOMMU.txt
io_ordering.txt
io-mapping.txt
iostats.txt	Documentation/iostats.txt: bit-size reference etc.	2011-03-23 20:44:18 +01:00
IPMI.txt	IPMI: Add the document description of ipmi_get_smi_info	2010-12-14 00:22:00 -05:00
IRQ-affinity.txt	bitmap, irq: add smp_affinity_list interface to /proc/irq	2011-05-25 08:39:45 -07:00
IRQ-domain.txt	irq_domain: add documentation and MAINTAINERS entry.	2012-02-14 14:06:47 -07:00
IRQ.txt
irqflags-tracing.txt	Fix common misspellings	2011-03-31 11:26:23 -03:00
isapnp.txt
java.txt
kernel-doc-nano-HOWTO.txt	docbook: warn on unused doc entries	2010-09-11 16:49:21 -07:00
kernel-docs.txt	doc: fix broken references	2011-09-27 18:08:04 +02:00
kernel-parameters.txt	Merge branch 'for-3.4' of git://linux-nfs.org/~bfields/linux	2012-03-29 14:53:25 -07:00
kmemcheck.txt
kmemleak.txt	kmemleak: Handle percpu memory allocation	2011-12-02 16:12:42 +00:00
kobject.txt	driver-core: documentation: fix up Greg's email address	2012-02-15 14:48:01 -08:00
kprobes.txt	tree-wide: fix comment/printk typos	2010-11-01 15:38:34 -04:00
kref.txt	kref: Fix typo in kref documentation	2011-03-07 13:20:05 -08:00
ldm.txt	Documentation: update broken web addresses.	2010-08-04 15:21:40 +02:00
local_ops.txt
lockdep-design.txt	lockdep: Update documentation for lock-class leak detection	2011-12-11 10:31:23 -08:00
lockstat.txt	Documentation: Add statistics about nested locks	2011-05-28 17:03:29 +02:00
lockup-watchdogs.txt	watchdog: Update documentation	2012-02-11 15:11:28 +01:00
logo.gif
logo.txt
magic-number.txt	drivers/net: fix up stale paths from driver reorg	2012-01-30 12:54:40 -05:00
Makefile	mm: move hugepage test examples to tools/testing/selftests/vm	2012-03-28 17:14:37 -07:00
ManagementStyle
mca.txt	doc: fix wrong arch/i386 references	2011-06-13 13:43:05 +02:00
md.txt	md: create externally visible flags for supporting hot-replace.	2011-12-23 10:17:51 +11:00
media-framework.txt	doc: fix broken references	2011-09-27 18:08:04 +02:00
memory-barriers.txt	doc: fix broken references	2011-09-27 18:08:04 +02:00
memory-hotplug.txt	memory hotplug: Allow memory blocks to span multiple memory sections	2011-02-03 16:08:57 -08:00
memory.txt
mono.txt	Documentation: remove references to /etc/modprobe.conf	2012-03-30 16:03:15 -07:00
mutex-design.txt	mutex: Fix annotations to include it in kernel-locking docbook	2010-09-03 08:19:51 +02:00
nommu-mmap.txt
numastat.txt	Doc: Update numastat.txt	2012-02-28 16:05:06 +01:00
oops-tracing.txt	module,bug: Add TAINT_OOT_MODULE flag for modules not built in-tree	2011-11-07 07:54:42 +10:30
padata.txt	Documentation/padata.txt: fix typos etc.	2010-08-11 08:59:18 -07:00
parport-lowlevel.txt
parport.txt	Documentation: remove references to /etc/modprobe.conf	2012-03-30 16:03:15 -07:00
pi-futex.txt
pinctrl.txt	pinctrl: enhance mapping table to support pin config operations	2012-03-05 11:25:11 +01:00
pnp.txt
preempt-locking.txt
printk-formats.txt	Documentation: update printk-formats.txt	2011-06-15 21:52:50 -07:00
prio_tree.txt
ramoops.txt	Documentation: add Ramoops usage description	2011-08-13 18:34:03 -07:00
rbtree.txt	Documentation: Update augmented rbtree documentation	2011-07-24 10:03:05 -07:00
remoteproc.txt	remoteproc: remove the single rpmsg vdev limitation	2012-03-06 19:14:12 +02:00
rfkill.txt	doc: fix broken references	2011-09-27 18:08:04 +02:00
robust-futex-ABI.txt
robust-futexes.txt
rpmsg.txt	rpmsg: add virtio-based remote processor messaging bus	2012-02-08 22:53:58 +02:00
rt-mutex-design.txt	variable name fix to Documentation/rt-mutex-design.txt	2010-06-05 17:39:09 +02:00
rt-mutex.txt
rtc.txt	RTC: Fix up rtc.txt documentation to reflect changes to generic rtc layer	2011-03-09 11:25:10 -08:00
SAK.txt
SecurityBugs	Fix common misspellings	2011-03-31 11:26:23 -03:00
serial-console.txt
sgi-ioc4.txt
sgi-visws.txt
SM501.txt
sparse.txt	update email address	2010-07-19 10:56:54 +02:00
spinlocks.txt	Documentation/spinlocks.txt: Remove reference to sti()/cli()	2011-07-11 12:45:04 -07:00
stable_api_nonsense.txt	doc: stable_api_nonsense.txt: fix paragraph to make more sense.	2011-03-30 12:02:05 +02:00
stable_kernel_rules.txt	stable: update documentation to ask for kernel version	2012-01-24 10:50:22 -08:00
static-keys.txt	static keys: Add docs better explaining the whole 'struct static_key' mechanism	2012-02-24 09:12:19 +01:00
SubmitChecklist	Documentation/SubmitChecklist: add RCU debug config options	2011-07-25 20:57:17 -07:00
SubmittingDrivers	Documentation: SubmittingDrivers: fix Linus's git tree URL	2011-08-13 18:34:03 -07:00
SubmittingPatches	Documentation: fix spelling error in SubmittingPatches	2011-08-13 18:34:02 -07:00
svga.txt
sysfs-rules.txt
sysrq.txt	Documentation: sysrq: Crutcher Dunnavant is unavailable	2012-03-30 16:03:15 -07:00
unaligned-memory-access.txt
unicode.txt
unshare.txt
VGA-softcursor.txt
vgaarbiter.txt	misc latin1 to utf8 conversions	2012-01-02 13:04:55 +01:00
video-output.txt
volatile-considered-harmful.txt
workqueue.txt	workqueue: Document debugging tricks	2011-03-31 13:40:42 +02:00
xz.txt	decompressors: add XZ decompressor module	2011-01-13 08:03:24 -08:00
zorro.txt