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Tomi Valkeinen 21189f03d3 OMAPDSS: HDMI: PHY burnout fix 
commit c49d005b6c upstream.

A hardware bug in the OMAP4 HDMI PHY causes physical damage to the board
if the HDMI PHY is kept powered on when the cable is not connected.

This patch solves the problem by adding hot-plug-detection into the HDMI
IP driver. This is not a real HPD support in the sense that nobody else
than the IP driver gets to know about the HPD events, but is only meant
to fix the HW bug.

The strategy is simple: If the display device is turned off by the user,
the PHY power is set to OFF. When the display device is turned on by the
user, the PHY power is set either to LDOON or TXON, depending on whether
the HDMI cable is connected.

The reason to avoid PHY OFF when the display device is on, but the cable
is disconnected, is that when the PHY is turned OFF, the HDMI IP is not
"ticking" and thus the DISPC does not receive pixel clock from the HDMI
IP. This would, for example, prevent any VSYNCs from happening, and
would thus affect the users of omapdss. By using LDOON when the cable is
disconnected we'll avoid the HW bug, but keep the HDMI working as usual
from the user's point of view.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-03-12 10:32:59 -07:00
..
accessibility
acpi ACPI / PM: Do not save/restore NVS on Asus K54C/K54HR 2012-03-12 10:32:57 -07:00
amba
ata ata_piix: make DVD Drive recognisable on systems with Intel Sandybridge chipsets(v2) 2011-11-11 09:35:50 -08:00
atm
auxdisplay
base firmware: Fix an oops on reading fw_priv->fw in sysfs loading file 2012-01-12 11:34:55 -08:00
bcma
block block: add and use scsi_blk_cmd_ioctl 2012-01-25 17:24:54 -08:00
bluetooth btusb: add device entry for Broadcom SoftSailing 2011-11-11 09:36:43 -08:00
cdrom cdrom: use copy_to_user() without the underscores 2012-02-29 16:34:35 -08:00
char TPM: Zero buffer after copying to userspace 2011-10-03 11:40:58 -07:00
clk
clocksource
connector
cpufreq powernow-k8: Fix indexing issue 2012-02-13 11:06:13 -08:00
cpuidle
crypto crypto: mv_cesa - fix final callback not ignoring input data 2012-03-12 10:32:56 -07:00
dca
dio
dma at_hdmac: bugfix for enabling channel irq 2012-02-13 11:06:07 -08:00
edac i7core_edac: fixed typo in error count calculation 2011-08-29 13:29:06 -07:00
eisa
firewire firewire: ohci: disable MSI on Ricoh controllers 2012-02-13 11:06:06 -08:00
firmware ibft: Fix finding IBFT ACPI table on UEFI 2011-12-21 12:57:45 -08:00
gpio gpio/pca953x: Fix warning of enabled interrupts in handler 2012-02-20 12:48:11 -08:00
gpu drm/i915: gen7: Disable the RHWO optimization as it can cause GPU hangs. 2012-03-12 10:32:58 -07:00
hid HID: usbhid: Add NOGET quirk for the AIREN Slim+ keyboard 2012-03-12 10:32:56 -07:00
hwmon hwmon: (f75375s) Fix register write order when setting fans to full speed 2012-02-29 16:34:33 -08:00
hwspinlock hwspinlock/core: use a mutex to protect the radix tree 2011-11-11 09:36:31 -08:00
i2c i2c: mxs: only flag completion when queue is completely done 2012-03-12 10:32:40 -07:00
ide block: add and use scsi_blk_cmd_ioctl 2012-01-25 17:24:54 -08:00
idle intel_idle: fix API misuse 2012-01-25 17:24:56 -08:00
ieee802154
infiniband IPoIB: Stop lying about hard_header_len and use skb->cb to stash LL addresses 2012-02-29 16:33:45 -08:00
input Input: synaptics - fix touchpad not working after S2R on Vostro V13 2012-01-06 14:13:49 -08:00
isdn net: Audit drivers to identify those needing IFF_TX_SKB_SHARING cleared 2011-08-15 18:31:38 -07:00
leds Revert "leds: save the delay values after a successful call to blink_set()" 2011-11-21 14:31:19 -08:00
lguest
macintosh
mca
md dm: do not forward ioctls from logical volumes to the underlying device 2012-01-25 17:24:54 -08:00
media hdpvr: fix race conditon during start of streaming 2012-02-29 16:34:33 -08:00
memstick
message
mfd mfd: Fix ACPI conflict check 2012-03-12 10:32:48 -07:00
misc mmc: cb710 core: Add missing spin_lock_init for irq_lock of struct cb710_chip 2012-02-13 11:06:13 -08:00
mmc mmc: sdhci-esdhc-imx: fix for mmc cards on i.MX5 2012-03-12 10:32:55 -07:00
mtd UBI: fix debugging messages 2012-01-25 17:24:44 -08:00
net ath9k_hw: prevent writes to const data on AR9160 2012-03-12 10:32:56 -07:00
nfc
nubus
of
oprofile oprofile: Fix uninitialized memory access when writing to writing to oprofilefs 2012-01-06 14:13:51 -08:00
parisc
parport
pci PCI: workaround hard-wired bus number V2 2012-02-29 16:33:39 -08:00
pcmcia pcmcia: fix socket refcount decrementing on each resume 2012-02-13 11:06:10 -08:00
platform WMI: properly cleanup devices to avoid crashes 2011-11-11 09:36:09 -08:00
pnp PNP: work around Dell 1536/1546 BIOS MMCONFIG bug that breaks USB 2012-01-25 17:24:42 -08:00
power drivers/power/ds2780_battery.c: fix deadlock upon insertion and removal 2011-11-11 09:36:32 -08:00
pps
ps3
ptp ptp: Fix clock_getres() implementation 2011-12-21 12:57:36 -08:00
rapidio rapidio: fix use of non-compatible registers 2011-10-03 11:39:46 -07:00
regulator regulator: fix the ldo configure according to 88pm860x spec 2012-03-12 10:32:40 -07:00
rtc drivers/rtc/interface.c: fix alarm rollover when day or month is out-of-range 2012-01-25 17:24:33 -08:00
s390 compat: fix compile breakage on s390 2012-03-12 10:32:38 -07:00
sbus
scsi osd_uld: Bump MAX_OSD_DEVICES from 64 to 1,048,576 2012-03-12 10:32:57 -07:00
sfi
sh
sn
spi spi/s3c64xx: Bug fix for SPI with different FIFO level 2011-07-06 15:03:08 +09:00
ssb ssb: fix init regression with SoCs 2012-01-06 14:13:48 -08:00
staging staging: r8712u: Add new Sitecom UsB ID 2012-02-13 11:06:12 -08:00
target target: Correct sense key for INVALID FIELD IN {PARAMETER LIST,CDB} 2012-02-13 11:06:11 -08:00
tc
telephony
thermal
tty drivers/tty/vt/vt_ioctl.c: fix KDFONTOP 32bit compatibility layer 2012-02-13 11:06:05 -08:00
uio
usb USB: Don't fail USB3 probe on missing legacy PCI IRQ. 2012-02-29 16:34:27 -08:00
uwb
vhost
video OMAPDSS: HDMI: PHY burnout fix 2012-03-12 10:32:59 -07:00
virtio virtio-pci: fix use after free 2011-11-21 14:31:14 -08:00
vlynq
w1 drivers/power/ds2780_battery.c: add a nolock function to w1 interface 2011-11-11 09:36:32 -08:00
watchdog watchdog: hpwdt: clean up set_memory_x call for 32 bit 2012-03-12 10:32:40 -07:00
xen xen/xenbus: Reject replies with payload > XENSTORE_PAYLOAD_MAX. 2012-01-25 17:24:41 -08:00
zorro zorro: Defer device_register() until all devices have been identified 2011-10-03 11:40:57 -07:00
Kconfig
Makefile