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Use PM runtime and HWMOD support to handle enabling and disabling of DSS
modules.
Each DSS module will have get and put functions which can be used to
enable and disable that module. The functions use pm_runtime and hwmod
opt-clocks to enable the hardware.
Acked-by: Kevin Hilman <khilman@ti.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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CONFIG_OMAP2_DSS_SLEEP_BEFORE_RESET is used to avoid an unclear bug at
DSS reset time. The pm runtime will handle reset in the future, and this
code has to be removed. Hopefully we won't see this error anymore.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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Currently dss.c does all the low level clock handling in the DSS, and
thus it contains pointers to all the clocks. This allows dss.c to dump
the clock information for all the clocks.
With pm_runtime this is no longer the case, as each submodule will
handle its clocks independently. Thus remove the core_dump_clocks
function as it cannot be used with pm_runtime.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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DSI PLL requires sys_clk to function, and DPI enables sys_clk when it
wants to use DSI PLL. However, DSI PLL code already handles enabling
sys_clk, so DPI's sys_clk code is extra.
Remove the unneeded sys_clk handling from dpi.c.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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Initialize get_context_loss_count in the DSS board data to
omap_pm_get_dev_context_loss_count, so that omapdss driver can use it.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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The function to get device's context loss count has changed from
omap_pm_get_last_off_on_transaction_id() to
omap_pm_get_dev_context_loss_count()
Change name of the function pointer in omapdss.h accordingly, and use
the term "context loss count" instead of "context id" in the code.
Restructure the context loss count functions to handle errors properly,
and ensure that context is always considered lost if an error happens.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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DSS enables core clocks for the duration of initialization to avoid
unnecessary context saves and restores.
With PM runtime the clocks cannot be handled in this way, outside the
dss module drivers. Thus we need to remove the optimization.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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The initialization order of the DSS modules is important when pm_runtime
support is implemented. Currently RFBI is initialized before DISPC,
which will cause problems with pm_runtime as RFBI uses DISPC.
The same goes for uninitialization order, and dss_uninit needs to be
called last, and dispc_uninit just before that.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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Both dss.c and dsi.c had a probe function, which was almost a dummy one,
calling dss_init() and dsi_init().
Remove the init functions by moving the initialization code into probe
functions.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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Get and put for dpll4_m4_ck was handled in dss_init/dss_exit. Move the
code to dss_get/put_clocks(), which is a better place to handle it.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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The DMA FIFO threshold registers and burst size registers have changed
for OMAP4. The current code only handles OMAP2/3 case, and so the
values are a bit off for OMAP4. A summary of the differences between
OMAP2/3 and OMAP4:
Burst size:
OMAP2/3: 4 x 32 bits / 8 x 32 bits / 16 x 32 bits
OMAP4: 2 x 128 bits / 4 x 128 bits / 8 x 128 bits
Threshold size:
OMAP2/3: in bytes (8 bit units)
OMAP4: in 128bit units
This patch fixes the issue by creating two new helper functions in
dss_features: dss_feat_get_buffer_size_unit() and
dss_feat_get_burst_size_unit(). These return (in bytes) the unit size
for threshold registers and unit size for burst size register,
respectively, and are used to calculate correct values.
For the threshold size the usage is straightforward. However, the burst
size register has different multipliers for OMAP2/3 and OMAP4. This
patch solves the problem by defining the multipliers for the burst size
as 2x, 4x and 8x, which fit fine for the OMAP4 burst size definition
(i.e. burst size unit for OMAP4 is 128bits), but requires a slight twist
on OMAP2/3 by defining the burst size unit as 64bit.
As the driver in practice always uses the maximum burst size, and no use
case currently exists where we would want to use a smaller burst size,
this patch changes the driver to hardcode the burst size when
initializing DISPC. This makes the threshold configuration code somewhat
simpler.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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When the panel driver calls omapdss_dsi_display_disable() it is possible
that there are still some unsent packets in the TX fifo.
Add dsi_sync_vc() calls in the beginning of
omapdss_dsi_display_disable() to make sure the TX fifos are empty.
This allows us to remove the msleep(10) hack from panel-taal.c
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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Add Color Phase Rotation (CPR) support and sysfs files to enable CPR and
to set the CPR coefficient matrix.
CPR is enabled via manager?/cpr_enable file, and the coefficient matrix
is set via manager?/cpr_coef file. The values in cpr_coef are in the
following order:
RR RG RB GR GG GB BR BG BB
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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The overlay_cache_data and manager_cache_data structs include
the elements of omap_overlay_info and omap_overlay_manager_info
structs respectively. Include the structs instead of the individual
elements to reduce code.
Signed-off-by: Nishant Kamat <nskamat@ti.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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OMAP2 doesn't have CPR, PRELOAD nor FIR_COEF_V registers. Add new
feature definitions for those, and check the feature before accessing
those registers.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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OMAP3430 requires an 96MHz clock to VENC's DAC, but no other OMAP needs
it.
Add a new feature, FEAT_VENC_REQUIRES_TV_DAC_CLK, which tells if the
clock is needed on this platform, and use that feature in venc.c to
decide if the clock needs enabling.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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LANEx_ULPS_SIG2 bits are left on after entering ULPS. This doesn't cause
any problems currently, as DSI HW is reset when it is enabled. However,
if the reset is not done, operation fails if the bits are still set.
So reset the bits after entering ULPS to ensure operation even without
HW reset.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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If ULPS exit fails, and the following reset fails also, Taal driver was
left in state where it thinks DSI is enabled while it really isn't,
leading to crash.
This patch checks the return value of taal_panel_reset, and if that
fails, ulps_enabled is left true, causing the driver to retry ulps exit
later.
Also the return value of taal_wake_up is checked at taal_disable, and if
wake up fails, we'll skip the power_off. This could leave the panel into
a not-quite-valid state, but there's nothing we can do about it in that
situation.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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Remove the whole update_mode stuff from omapdss driver. If automatic
update for manual update displays is needed, it's better implemented in
higher layers.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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Implement auto-update mode for manual-update displays. omapfb driver
uses a delayed work to update the display with a constant rate.
The update mode can be changed via OMAPFB_SET_UPDATE_MODE ioctl, which
previously called omapdss but is now handled inside omapfb, and a new
sysfs file, "update_mode".
The update interval is by default 20 times per second, but can be
changed via "auto_update_freq" module parameter. There is also a new
module parameter "auto_update", which will make omapfb start manual
update displays in auto-update mode.
This auto-update mode can be used for testing if the userspace does not
support manual update displays properly. However, it is a very
inefficient solution, and should be considered more as a hack for
testing than something that could be used as a long term solution.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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Create a new struct omapfb_display_data to contain omapfb's private
per-display data. Move the bpp override there.
This struct will be used to hold auto/manual update state of a display
in the following patches.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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Using empty macros for performance measurement functions when DSS DEBUG
is not enabled causes an unused variable warning.
Change the empty macros to empty inline functions to remove the
warning.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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omapdss.h included platform_device.h and atomic.h, neither of which is
needed by omapdss.h. Remove those includes from omapdss.h, and fix the
affected .c files which did not include platform_device.h even though
they should.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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Commit 13e12d14e2dc ("vfs: reorganize 'struct inode' layout a bit")
moved things around a bit changed i_state to be unsigned int instead of
unsigned long. That was to help structure layout for the 64-bit case,
and shrink 'struct inode' a bit (admittedly that only happened when
spinlock debugging was on and i_flags didn't pack with i_lock).
However, Meelis Roos reports that this results in unaligned exceptions
on sprc, and it turns out that the bit-locking primitives that we use
for the I_NEW bit want to use the bitops. Which want 'unsigned long',
not 'unsigned int'.
We really should fix the bit locking code to not have that kind of
requirement, but that's a much bigger change. So for now, revert that
field back to 'unsigned long' (but keep the other re-ordering changes
from the commit that caused this).
Andi points out that we have played games with this in 'struct page', so
it's solvable with other hacks too, but since right now the struct inode
size advantage only happens with some rare config options, it's not
worth fighting.
It _would_ be worth fixing the bitlocking code, though. Especially
since there is no type safety in the bitlocking code (this never caused
any warnings, and worked fine on x86-64, because the bitlocks take a
'void *' and x86-64 doesn't care that deeply about alignment). So it's
currently a very easy problem to trigger by mistake and never notice.
Reported-by: Meelis Roos <mroos@linux.ee>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Miller <davem@davemloft.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6
* 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6:
drm/radeon/kms/r6xx+: voltage fixes
drm/nouveau: drop leftover debugging
drm/radeon: avoid warnings from r600/eg irq handlers on powered off card.
drm/radeon/kms: add missing param for dce3.2 DP transmitter setup
drm/radeon/kms/atom: fix duallink on some early DCE3.2 cards
drm/nouveau: fix assumption that semaphore dmaobj is valid in x-chan sync
drm/nv50/disp: fix gamma with page flipping overlay turned on
drm/nouveau/pm: Prevent overflow in nouveau_perf_init()
drm/nouveau: fix big-endian switch
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* 'msm-fix' of git://codeaurora.org/quic/kernel/davidb/linux-msm:
msm: timer: Fix DGT rate on 8960 and 8660
msm: timer: compensate for timer shift in msm_read_timer_count
msm: timer: Fix SMP build error
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* 'for-2.6.40' of git://linux-nfs.org/~bfields/linux:
nfsd4: fix break_lease flags on nfsd open
nfsd: link returns nfserr_delay when breaking lease
nfsd: v4 support requires CRYPTO
nfsd: fix dependency of nfsd on auth_rpcgss
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* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (40 commits)
pxa168_eth: fix race in transmit path.
ipv4, ping: Remove duplicate icmp.h include
netxen: fix race in skb->len access
sgi-xp: fix a use after free
hp100: fix an skb->len race
netpoll: copy dev name of slaves to struct netpoll
ipv4: fix multicast losses
r8169: fix static initializers.
inet_diag: fix inet_diag_bc_audit()
gigaset: call module_put before restart of if_open()
farsync: add module_put to error path in fst_open()
net: rfs: enable RFS before first data packet is received
fs_enet: fix freescale FCC ethernet dp buffer alignment
netdev: bfin_mac: fix memory leak when freeing dma descriptors
vlan: don't call ndo_vlan_rx_register on hardware that doesn't have vlan support
caif: Bugfix - XOFF removed channel from caif-mux
tun: teach the tun/tap driver to support netpoll
dp83640: drop PHY status frames in the driver.
dp83640: fix phy status frame event parsing
phylib: Allow BCM63XX PHY to be selected only on BCM63XX.
...
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git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6:
devcgroup_inode_permission: take "is it a device node" checks to inlined wrapper
fix comment in generic_permission()
kill obsolete comment for follow_down()
proc_sys_permission() is OK in RCU mode
reiserfs_permission() doesn't need to bail out in RCU mode
proc_fd_permission() is doesn't need to bail out in RCU mode
nilfs2_permission() doesn't need to bail out in RCU mode
logfs doesn't need ->permission() at all
coda_ioctl_permission() is safe in RCU mode
cifs_permission() doesn't need to bail out in RCU mode
bad_inode_permission() is safe from RCU mode
ubifs: dereferencing an ERR_PTR in ubifs_mount()
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0xff01 is not an actual voltage value, but a flag
for the driver. If the power state as that value,
skip setting the voltage.
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
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The DGT runs at 27 MHz divided by 4 on 8660 and 8960.
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: David Brown <davidb@codeaurora.org>
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Because the socket buffer is freed in the completion interrupt, it is not
safe to access it after submitting it to the hardware.
Cc: stable@kernel.org
Cc: Sachin Sanap <ssanap@marvell.com>
Cc: Zhangfei Gao <zgao6@marvell.com>
Cc: Philip Rakity <prakity@marvell.com>
Signed-off-by: Richard Cochran <richard.cochran@omicron.at>
Acked-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Remove the duplicate inclusion of net/icmp.h from net/ipv4/ping.c
Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
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As soon as skb is given to hardware, TX completion can free skb under
us.
Therefore, we should update dev stats before kicking the device.
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
CC: Amit Kumar Salecha <amit.salecha@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen
* 'stable/bug.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen:
xen/setup: Fix for incorrect xen_extra_mem_start.
xen: When calling power_off, don't call the halt function.
xen: Fix compile warning when CONFIG_SMP is not defined.
xen: support CONFIG_MAXSMP
xen: partially revert "xen: set max_pfn_mapped to the last pfn mapped"
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git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
Input: sh_keysc - 8x8 MODE_6 fix
Input: omap-keypad - add missing input_sync()
Input: evdev - try to wake up readers only if we have full packet
Input: properly assign return value of clamp() macro.
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git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable:
Btrfs: avoid delayed metadata items during commits
btrfs: fix uninitialized return value
btrfs: fix wrong reservation when doing delayed inode operations
btrfs: Remove unused sysfs code
btrfs: fix dereference of ERR_PTR value
Btrfs: fix relocation races
Btrfs: set no_trans_join after trying to expand the transaction
Btrfs: protect the pending_snapshots list with trans_lock
Btrfs: fix path leakage on subvol deletion
Btrfs: drop the delalloc_bytes check in shrink_delalloc
Btrfs: check the return value from set_anon_super
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* 'kvm-updates/3.0' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
KVM: Fix register corruption in pvclock_scale_delta
KVM: MMU: fix opposite condition in mapping_level_dirty_bitmap
KVM: VMX: do not overwrite uptodate vcpu->arch.cr3 on KVM_SET_SREGS
KVM: MMU: Fix build warnings in walk_addr_generic()
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inode_permission() calls devcgroup_inode_permission() and almost all such
calls are _not_ for device nodes; let's at least keep the common path
straight...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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CAP_DAC_OVERRIDE is enough for MAY_EXEC on directory, even if
no exec bits are set.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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nothing blocking there, since all instances of sysctl
->permissions() method are non-blocking - both of them,
that is.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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nothing blocking other than generic_permission() (and
check_acl callback does bail out in RCU mode).
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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nothing blocking except generic_permission()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Nothing blocking except for generic_permission(). Which will DTRT.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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... and never did, what with its ->permission() being what we do by default
when ->permission is NULL...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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return (mask & MAY_EXEC) ? -EACCES : 0; is non-blocking...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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nothing potentially blocking except generic_permission(), which
will DTRT
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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return -EIO; is *not* a blocking operation, thank you very much.
Nick, what the hell have you been smoking?
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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