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2010-05-20ARM: Merge for-2635-4/s5pc1xx-removalBen Dooks
Merge branch 'for-2635-4/s5pc1xx-removal' into for-2635-4/partial1
2010-05-20ARM: S5PV210: Fixup machine Kconfig orderBen Dooks
Update the Kconfig order and add a spacer between device setup support and the machine definitions. Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2010-05-20ARM: S5PV210: Add GONI board supportJoonyoung Shim
This is for samsung GONI board using s5pc110. Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com> Reviewed-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2010-05-20crypto: authenc - Fix cryptlen calculationShikhar Khattar
This patch (applied against 2.6.34) fixes the calculation of the length of the ABLKCIPHER decrypt request ("cryptlen") after an asynchronous hash request has been completed in the AUTHENC interface. Signed-off-by: Shikhar Khattar <shikhark@gmail.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2010-05-20ASoC: tpa6130a2: Remove CPVSS and HPVdd suppliesJarkko Nikula
These pins are for decoupling capacitors for the internal charge pumps in TPA6130A2 and TPA6140A2 and not for connecting external supply. Thanks to Eduardo Valentin <eduardo.valentin@nokia.com> for pointing out the issue with TPA6130A2 and Ilkka Koskinen <ilkka.koskinen@nokia.com> with TPA6140A2. Signed-off-by: Jarkko Nikula <jhnikula@gmail.com> Acked-by: Peter Ujfalusi <peter.ujfalusi@nokia.com> Reviewed-by: Ilkka Koskinen <ilkka.koskinen@nokia.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
2010-05-20ARM: S5PV210: add common HSMMC device helpersMarek Szyprowski
This patch adds sdhci platform helpers required by sdhci-s3c driver. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2010-05-20ARM: S5PV210: add common I2C device helpersMarek Szyprowski
This patch adds I2C platform helpers required by s3c2440-i2c driver. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2010-05-20ARM: S5PV210: add framebuffer platform helpers for s5pv210 based machinesMarek Szyprowski
This patch adds common framebuffer device helpers and register defines for S5PV210 based machines. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2010-05-20mtd: mxc_nand: Remove duplicate NAND_CMD_RESET case valueDavid Woodhouse
This reverts commit 66803762 ("mtd: mxc_nand: add RESET command support"). Support for NAND_CMD_RESET was added separately in commit d4840180 ("mtd: mxc_nand: set NFC registers after reset"), causing a build error: drivers/mtd/nand/mxc_nand.c: In function 'mxc_nand_command': drivers/mtd/nand/mxc_nand.c:689: error: duplicate case value drivers/mtd/nand/mxc_nand.c:606: error: previously used here Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-05-20ARM: SAMSUNG: Add platform support code for OneNAND controllerMarek Szyprowski
This patch adds setup code for Samsung OneNAND controller driver. The driver needs to be aware on which SoC it is running, so the actual device id is being changed in cpu init code. S3C64xx SoCs have 2 OneNAND controllers while S5PC100 and S5PC110 has only one. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> [ben-linux@fluff.org: sort map.h entries] Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2010-05-20ARM: remove obsolete plat-s5pc1xx directoryMarek Szyprowski
This patch removes all obsolete files from plat-s5pc1xx. This directory is no longer needed. S5PC100 SoC is now completely supported in plat-s5p framework. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2010-05-20ARM: S5PC100: use common plat-s5p external interrupt codeMarek Szyprowski
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2010-05-20ARM: S5PC100: Add support for gpio interruptMarek Szyprowski
This patch moves support for gpio interrupts from plat-s5pc1xx to mach-s5pc100 directory. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2010-05-20ARM: SAMSUNG: move S5PC100 support from plat-s5pc1xx to plat-s5p frameworkMarek Szyprowski
This patch moves S5PC100 SoC support to plat-s5p framework. Most periperal support code has been already moved from plat-s5pc1xx to mach-s5pc100. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2010-05-20ARM: S5PC100: Move sdhci helpers from plat-s5pc1xx to mach-s5pc100Marek Szyprowski
Move sdhci helpers from plat-s5pc1xx to mach-s5pc100. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2010-05-20ARM: S5PV210: add support for s3c-fb driver on Aquila machineMarek Szyprowski
This patch adds required platform definitions to enable s3c-fb driver. Two framebuffer windows in 480x800x16bpp mode are defined. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2010-05-20ARM: S5PV210: add Aquila boardMarek Szyprowski
Add basic support for Samsung Aquila board. This board is based on S5PC110 SoC. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2010-05-20ARM: S5PV210: Remove limiting choice of machine to buildBen Dooks
The arch/arm/mach-s5pv210/Kconfig had a choice entry to choose which of the two machines to build, which is silly since you can easily build more than one machine at a time. Remove the choice entry so that both machines and any future additions can all build in harmony. Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2010-05-20ARM: SMDKC100: remove magic values from uart setup structuresMarek Szyprowski
This patch introduces nice defines for the initial values for UART devices on SMDKC100. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2010-05-20ARM: SMDKC100: fix frame buffer definitionsMarek Szyprowski
The definition of the framebuffer parameters was created when s3c-fb.c driver was patched to support setting the refresh rate directly (commit 600ce1a0faafeed1ce6bcfd421bc040b941cbbc1). That patch was completely wrong and was reverted in commit eb29a5cc0b601c458bae9df2f what breaked the framebuffer on s5pc100. This patch updates framebuffer definitions to correct values. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2010-05-20ARM: S5PV210: Add IRQ_EINT interrupt support.Jongpill Lee
Add support for external interrupts on S5PV210. Signed-off-by: Jongpill Lee <boyko.lee@samsung.com> Signed-off-by: Pannaga Bhushan <p.bhushan@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com> [ben-linux@fluff.org: Ext => IRQ_EINT in title] Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2010-05-20ARM: S5PV210: Add Touchscreen support for S5PV210Naveen Krishna Ch
This patch adds touchscreen support for S5PV210. Note: TSADC in S5PV210 support 2 touchscreen interfaces, Only 1 is implemented as of now. Signed-off-by: Naveen Krishna Ch <ch.naveen@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com> [ben-linux@fluff.org: minor title fix] Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2010-05-20ARM: S5P6440: Add Touchscreen support for S5P6440Naveen Krishna Ch
This patch adds touchscreen support for S5P6440. Signed-off-by: Naveen Krishna Ch <ch.naveen@samsung.com Signed-off-by: Kukjin Kim <kgene.kim@samsung.com> [ben-linux@fluff.org: minor header fix] Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2010-05-20ARM: S3C64XX: Add Touchscreen support for S3C64XXNaveen Krishna Ch
This patch adds touchscreen support for S3C64XX. Signed-off-by: Naveen Krishna Ch <ch.naveen@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com> [ben-linux@fluff.org: minor title fix] Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2010-05-19ACPI: fix early DSDT dmi check warnings on ia64Lin Ming
WARNING: at drivers/firmware/dmi_scan.c:423 dmi_matches+0x70/0x160() dmi check: not initialized yet. This is caused by commit aa2110c (ACPI: add boot option acpi=copy_dsdt to fix corrupt DSDT). DMI is not initialized yet in acpi_early_init on ia64. The DSDT DMI check table is x86 specific, so make it empty on other archs. And this fixes the warnings on ia64. Reported-and-tested-by: Tony Luck <tony.luck@intel.com> Signed-off-by: Lin Ming <ming.m.lin@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2010-05-19Merge branch 'for-2.6.35' of git://linux-nfs.org/~bfields/linuxLinus Torvalds
* 'for-2.6.35' of git://linux-nfs.org/~bfields/linux: (45 commits) Revert "nfsd4: distinguish expired from stale stateids" nfsd: safer initialization order in find_file() nfs4: minor callback code simplification, comment NFSD: don't report compiled-out versions as present nfsd4: implement reclaim_complete nfsd4: nfsd4_destroy_session must set callback client under the state lock nfsd4: keep a reference count on client while in use nfsd4: mark_client_expired nfsd4: introduce nfs4_client.cl_refcount nfsd4: refactor expire_client nfsd4: extend the client_lock to cover cl_lru nfsd4: use list_move in move_to_confirmed nfsd4: fold release_session into expire_client nfsd4: rename sessionid_lock to client_lock nfsd4: fix bare destroy_session null dereference nfsd4: use local variable in nfs4svc_encode_compoundres nfsd: further comment typos sunrpc: centralise most calls to svc_xprt_received nfsd4: fix unlikely race in session replay case nfsd4: fix filehandle comment ...
2010-05-19Merge branch 'nfs-for-2.6.35' of ↵Linus Torvalds
git://git.linux-nfs.org/projects/trondmy/nfs-2.6 * 'nfs-for-2.6.35' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6: (78 commits) SUNRPC: Don't spam gssd with upcall requests when the kerberos key expired SUNRPC: Reorder the struct rpc_task fields SUNRPC: Remove the 'tk_magic' debugging field SUNRPC: Move the task->tk_bytes_sent and tk_rtt to struct rpc_rqst NFS: Don't call iput() in nfs_access_cache_shrinker NFS: Clean up nfs_access_zap_cache() NFS: Don't run nfs_access_cache_shrinker() when the mask is GFP_NOFS SUNRPC: Ensure rpcauth_prune_expired() respects the nr_to_scan parameter SUNRPC: Ensure memory shrinker doesn't waste time in rpcauth_prune_expired() SUNRPC: Dont run rpcauth_cache_shrinker() when gfp_mask is GFP_NOFS NFS: Read requests can use GFP_KERNEL. NFS: Clean up nfs_create_request() NFS: Don't use GFP_KERNEL in rpcsec_gss downcalls NFSv4: Don't use GFP_KERNEL allocations in state recovery SUNRPC: Fix xs_setup_bc_tcp() SUNRPC: Replace jiffies-based metrics with ktime-based metrics ktime: introduce ktime_to_ms() SUNRPC: RPC metrics and RTT estimator should use same RTT value NFS: Calldata for nfs4_renew_done() NFS: Squelch compiler warning in nfs_add_server_stats() ...
2010-05-19Merge branch 'bkl/procfs' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/frederic/random-tracing * 'bkl/procfs' of git://git.kernel.org/pub/scm/linux/kernel/git/frederic/random-tracing: sunrpc: Include missing smp_lock.h procfs: Kill the bkl in ioctl procfs: Push down the bkl from ioctl procfs: Use generic_file_llseek in /proc/vmcore procfs: Use generic_file_llseek in /proc/kmsg procfs: Use generic_file_llseek in /proc/kcore procfs: Kill BKL in llseek on proc base
2010-05-19Merge branch 'timers-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'timers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: clocksource: Add clocksource_register_hz/khz interface posix-cpu-timers: Optimize run_posix_cpu_timers() time: Remove xtime_cache mqueue: Convert message queue timeout to use hrtimers hrtimers: Provide schedule_hrtimeout for CLOCK_REALTIME timers: Introduce the concept of timer slack for legacy timers ntp: Remove tickadj ntp: Make time_adjust static time: Add xtime, wall_to_monotonic to feature-removal-schedule timer: Try to survive timer callback preempt_count leak timer: Split out timer function call timer: Print function name for timer callbacks modifying preemption count time: Clean up warp_clock() cpu-timers: Avoid iterating over all threads in fastpath_timer_check() cpu-timers: Change SIGEV_NONE timer implementation cpu-timers: Return correct previous timer reload value cpu-timers: Cleanup arm_timer() cpu-timers: Simplify RLIMIT_CPU handling
2010-05-19Merge branch 'timers-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'timers-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: cs5535-clockevt: Free timer in IRQ setup error path
2010-05-19Merge branch 'timers-for-linus-hpet' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'timers-for-linus-hpet' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86, hpet: Add reference to chipset erratum documentation for disable-hpet-msi-quirk x86, hpet: Restrict read back to affected ATI chipsets
2010-05-19Merge branch 'timers-for-linus-cleanups' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'timers-for-linus-cleanups' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: avr32: Fix typo in read_persistent_clock() sparc: Convert sparc to use read/update_persistent_clock cris: Convert cris to use read/update_persistent_clock m68k: Convert m68k to use read/update_persistent_clock m32r: Convert m32r to use read/update_peristent_clock blackfin: Convert blackfin to use read/update_persistent_clock ia64: Convert ia64 to use read/update_persistent_clock avr32: Convert avr32 to use read/update_persistent_clock h8300: Convert h8300 to use read/update_persistent_clock frv: Convert frv to use read/update_persistent_clock mn10300: Convert mn10300 to use read/update_persistent_clock alpha: Convert alpha to use read/update_persistent_clock xtensa: Fix unnecessary setting of xtime time: Clean up direct xtime usage in xen
2010-05-19Merge branch 'irq-core-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: genirq: Clear CPU mask in affinity_hint when none is provided genirq: Add CPU mask affinity hint genirq: Remove IRQF_DISABLED from core code genirq: Run irq handlers with interrupts disabled genirq: Introduce request_any_context_irq() genirq: Expose irq_desc->node in proc/irq Fixed up trivial conflicts in Documentation/feature-removal-schedule.txt
2010-05-20i2c-highlander: remover superflous variableWolfram Sang
When cppcheck found this flaw [./i2c/busses/i2c-highlander.c:284]: (style) Warning - using char variable in bit operation it was noted that the 'read'-variable could be simply removed as read_write can only be 0 or 1 anyhow. So, we remove the flaw and simplify the code. Reported-by: d binderman <dcb314@hotmail.com> Signed-off-by: Wolfram Sang <w.sang@pengutronix.de> Acked-by: Paul Mundt <lethal@linux-sh.org> Acked-by: Jean Delvare <khali@linux-fr.org> Cc: Ben Dooks <ben-linux@fluff.org>
2010-05-20i2c-ibm-iic: drop NO_IRQWolfram Sang
Drop NO_IRQ as 0 is the preferred way to describe 'no irq' (http://lkml.org/lkml/2005/11/21/221). This change is safe, as the driver is only used on powerpc, where NO_IRQ is 0 anyhow. Signed-off-by: Wolfram Sang <w.sang@pengutronix.de> Acked-by: Grant Likely <grant.likely@secretlab.ca> Acked-by: Sean MacLennan <smaclennan@pikatech.com> Cc: Ben Dooks <ben-linux@fluff.org>
2010-05-20i2c-cpm: drop NO_IRQWolfram Sang
Drop NO_IRQ as 0 is the preferred way to describe 'no irq' (http://lkml.org/lkml/2005/11/21/221). This change is safe, as the driver is only used on powerpc, where NO_IRQ is 0 anyhow. Signed-off-by: Wolfram Sang <w.sang@pengutronix.de> Acked-by: Grant Likely <grant.likely@secretlab.ca> Acked-by: Jochen Friedrich <jochen@scram.de> Cc: Ben Dooks <ben-linux@fluff.org>
2010-05-20i2c-mpc: drop NO_IRQWolfram Sang
Drop NO_IRQ as 0 is the preferred way to describe 'no irq' (http://lkml.org/lkml/2005/11/21/221). This change is safe, as the driver is only used on powerpc, where NO_IRQ is 0 anyhow. Signed-off-by: Wolfram Sang <w.sang@pengutronix.de> Acked-by: Grant Likely <grant.likely@secretlab.ca> Cc: Ben Dooks <ben-linux@fluff.org>
2010-05-20MAINTAINERS: add i2c tree for embedded platformsUwe Kleine-König
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Acked-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
2010-05-20i2c-pxa: only define 'blue_murder'-function if DEBUG is #definedWolfram Sang
This talkative function is also called on timeouts. As timeouts can happen on regular writes to EEPROMs (no error case), this creates false positives. Giving lots of details is interesting only for developers anyhow, so just use the function if DEBUG is #defined. Signed-off-by: Wolfram Sang <w.sang@pengutronix.de> Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Cc: Russell King <rmk+kernel@arm.linux.org.uk> Acked-by: Eric Miao <eric.y.miao@gmail.com> Cc: Roel Kluin <roel.kluin@gmail.com> Cc: Pavel Machek <pavel@ucw.cz>
2010-05-20i2c-pxa: remove unused macroUwe Kleine-König
Commit beea494 ([ARM] Remove EEPROM slave emulation from i2c-pxa driver.) removed all uses of eedbg, so the definition can go, too. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Acked-by: Russell King <rmk+kernel@arm.linux.org.uk> Cc: Eric Miao <eric.y.miao@gmail.com> Cc: Roel Kluin <roel.kluin@gmail.com> Acked-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
2010-05-20i2c-nomadik: fix operator precedence warningRabin Vincent
Fix this warning: i2c-nomadik.c:707: warning: suggest parentheses around operand of '!' or change '&' to '&&' or '!' to '~' Acked-by: Linus Walleij <linus.walleij@stericsson.com> Acked-by: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com> Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2010-05-20i2c-nomadik: release region when removedRabin Vincent
So that the module can be loaded again after an unload. Acked-by: Linus Walleij <linus.walleij@stericsson.com> Acked-by: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com> Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2010-05-20OMAP3: I2C: Clean up Errata 1p153 handlingmanjugk manjugk
Clean up existing Errata 1p153 handling to use generic errata handling mechanism through dev flag. Signed-off-by: Manjunatha GK <manjugk@ti.com> Cc: Nishanth Menon <nm@ti.com> Cc: Alexander Shishkin <virtuoso@slind.org> Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2010-05-20i2c-omap: add mpu wake up latency constraint in i2cKalle Jokiniemi
While waiting for completion of the i2c transfer, the MPU could hit OFF mode and cause several msecs of delay that made i2c transfers fail more often. The extra delays and subsequent re-trys cause i2c clocks to be active more often. This has also an negative effect on power consumption. Created a mechanism for passing and using the constraint setting function in driver code. The used mpu wake up latency constraints are now set individually per bus, and they are calculated based on clock rate and fifo size. Thanks to Jarkko Nikula, Moiz Sonasath, Paul Walmsley, and Nishanth Menon for tuning out the details of this patch. Updates by Kevin as requested by Tony: - Remove omap_set_i2c_constraint_func() in favor of conditionally adding the flag in omap_i2c_add_bus() in order to keep all the OMAP conditional checking in a single location. - Update set_mpu_wkup_lat prototypes to match OMAP PM layer so OMAP PM function can be used directly in pdata. Cc: Moiz Sonasath <m-sonasath@ti.com> Cc: Jarkko Nikula <jhnikula@gmail.com> Cc: Paul Walmsley <paul@pwsan.com> Cc: Nishanth Menon <nm@ti.com> Signed-off-by: Kalle Jokiniemi <kalle.jokiniemi@digia.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com> Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2010-05-20OMAP2/3: I2C: Errata ID i207: Clear wrong RDR interruptmanjugk manjugk
Under certain rare conditions, I2C_STAT[13].RDR bit may be set and the corresponding interrupt fire, even there is no data in the receive FIFO, or the I2C data transfer is still ongoing. These spurious RDR events must be ignored by the software. This patch handles and ignores RDR spurious interrupts. The below sequence is required in interrupt handler for handling this errata: 1. If RDR is set to 1, clear RDR 2. Read I2C status register and check for BusBusy bit. If BusBusy bit is set, skip remaining steps. 3. If BusBusy bit is not set, perform read operation on I2C status register. 4. If RDR is set, clear the same. Check RDR again and clear if it sets RDR bit again. 5. Perform I2C Data Read operation N number of times(where N is value read from the register BUFSTAT-RXSTAT bit fields). Note: This errata is not applicable for omap2420 and omap4. It is applicable for: 1. omap2430 2. omap34xx(including omap3630). Signed-off-by: Manjunatha GK <manjugk@ti.com> Cc: Hema Kalliguddi <hemahk@ti.com> Cc: Nishanth Menon <nm@ti.com> Cc: Aaro Koskinen <Aaro.Koskinen@nokia.com> Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2010-05-20omap: i2c: Add i2c support on omap4 platformSantosh Shilimkar
This patch is rebased version of earlier post to add I2C driver support to OMAP4 platform. On OMAP4, all I2C register address offsets are changed from OMAP1/2/3 I2C. In order to not have #ifdef's at various places in code, as well as to support multi-OMAP build, an array is created to hold the register addresses with it's offset. This patch was submitted, reviewed and acked on mailing list already. For more details refer below link http://www.mail-archive.com/linux-i2c@vger.kernel.org/msg02281.html This updated verion has a depedancy on "Add support for 16-bit registers" posted on linux-omap. Below is the patch-works link for the same http://patchwork.kernel.org/patch/72295/ Signed-off-by: Syed Rafiuddin <rafiuddin.syed@ti.com> Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Acked-by: Kevin Hilman <khilman@deeprootsystems.com> Reviewed-by: Paul Walmsley <paul@pwsan.com> Cc: Cory Maccarrone <darkstar6262@gmail.com> Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2010-05-20omap: i2c: add a timeout to the busy waitingAlexander Shishkin
The errata 1.153 workaround is busy waiting on XUDF bit in interrupt context, which may lead to kernel hangs. The problem can be reproduced by running the bus with wrong (too high) speed. Signed-off-by: Alexander Shishkin <virtuoso@slind.org> Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2010-05-20omap: i2c: make errata 1.153 workaround a separate functionAlexander Shishkin
This is to avoid insanely long lines and levels of indentation. Signed-off-by: Alexander Shishkin <virtuoso@slind.org> Cc: Nishant Menon <nm@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2010-05-20i2c-bfin-twi: return completion in interrupt for smbus quick transfersSonic Zhang
A smbus quick transfer has no data after the address byte. Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
2010-05-20i2c-bfin-twi: remove redundant retrySonic Zhang
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Ben Dooks <ben-linux@fluff.org>