aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/i2c
Commit message (Collapse)AuthorAge
...
| * i2c: s3c2410: Convert to devm_request_and_ioremap()Mark Brown2012-11-16
| | | | | | | | | | | | | | A small code saving and less error handling to worry about. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
| * i2c: s3c2410: Refactor ifdefs for PM_SLEEPMark Brown2012-11-16
| | | | | | | | | | | | | | | | | | | | Use the PM_SLEEP ifdef for system suspend and resume. This is partly in preparation for adding runtime operations and partly because a user may in theory choose to enable runtime suspend but not system suspend. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Reviewed-by: Shubhrajyoti D <shubhrajyoti@ti.com> Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
| * i2c: mux: Add dt support to i2c-mux-gpio driverMaxime Ripard2012-11-16
| | | | | | | | | | | | | | | | | | | | | | | | | | Allow the i2c-mux-gpio to be used by a device tree enabled device. The bindings are inspired by the one found in the i2c-mux-pinctrl driver. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Reviewed-by: Stephen Warren <swarren@nvidia.com> Acked-by: Peter Korsgaard <peter.korsgaard@barco.com> [wsa: fixed some whitespace] Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
| * i2c: i2c-sh_mobile: fix spurious transfer request timed outShinya Kuribayashi2012-11-16
| | | | | | | | | | | | | | | | | | | | | | | | | | Ensure that any of preceding register write operations to the I2C hardware block reached the module, and the write data is reflected in the registers, before leaving the interrupt handler. Otherwise, we'll suffer from spurious WAIT interrupts that lead to 'Transfer request timed out' message, and the transaction failed. Reported-by: Teppei Kamijou <teppei.kamijou.yb@renesas.com> Signed-off-by: Shinya Kuribayashi <shinya.kuribayashi.px@renesas.com> Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
| * i2c: i2c-sh_mobile: support I2C hardware block with a faster operating clockShinya Kuribayashi2012-11-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On newer SH-/R-Mobile SoCs, a clock supply to the I2C hardware block, which is used to generate the SCL clock output, is getting faster than before, while on the other hand, the SCL clock control registers, ICCH and ICCL, stay unchanged in 9-bit-wide (8+1). On such silicons, the internal SCL clock counter gets incremented every 2 clocks of the operating clock. This patch makes it configurable through platform data. Signed-off-by: Shinya Kuribayashi <shinya.kuribayashi.px@renesas.com> Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
| * i2c: i2c-sh_mobile: optimize ICCH/ICCL values according to I2C bus speedShinya Kuribayashi2012-11-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ICCH/ICCL values is supposed to be calculated/optimized to strictly meet the timing specs required by the I2C standard. The resulting I2C bus speed does not matter at all, if it's less than 100 or 400 kHz. With this change, sh_mobile_i2c_icch() is virtually identical to sh_mobile_i2c_iccl(), but they're providing good descriptions of SH-/R-Mobile I2C hardware spec, and I'd leave them as separated. Also fix a typo in the comment, print icch/iccl values at probe, etc. Signed-off-by: Shinya Kuribayashi <shinya.kuribayashi.px@renesas.com> [wsa: squashed two patches for bisectability] Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
| * i2c: i2c-sh_mobile: calculate clock parameters at driver probing timeShinya Kuribayashi2012-11-16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently SCL clock parameters (ICCH/ICCL) are calculated in activate_ch(), which gets called every time sh_mobile_i2c_xfer() is processed, while each I2C bus speed is system-defined and in general those parameters do not have to be updated over I2C transactions. The only reason I could see having it transaction-time is to adjust ICCH/ICCL values according to the operating frequency of the I2C hardware block, in the face of DFS (Dynamic Frequency Scaling). However, this won't be necessary. The operating frequency of the I2C hardware block can change _even_ in the middle of I2C transactions. There is no way to prevent it from happening, and I2C hardware block can work with such dynamic frequency change, of course. Another is that ICCH/ICCL clock parameters optimized for the faster operating frequency, can also be applied to the slower operating frequency, as long as slave devices work. However, the converse is not true. It would violate SCL timing specs of the I2C standard. What we can do now is to calculate the ICCH/ICCL clock parameters according to the fastest operating clock of the I2C hardware block. And if that's the case, that calculation should be done just once at driver-module-init time. This patch moves ICCH/ICCL calculating part from activate_ch() into sh_mobile_i2c_init(), and call it from sh_mobile_i2c_probe(). Note that sh_mobile_i2c_init() just prepares clock parameters using the clock rate and platform data provided, but does _not_ make any hardware I/O accesses. We don't have to care about run-time PM maintenance here. Signed-off-by: Shinya Kuribayashi <shinya.kuribayashi.px@renesas.com> Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
| * i2c: omap: don't save a value only needed for read-clearingWolfram Sang2012-11-14
| | | | | | | | | | Acked-by: Felipe Balbi <balbi@ti.com> Signed-off-by: Wolfram Sang <wolfram@the-dreams.de>
| * i2c: omap: cleanup the sysc writeShubhrajyoti D2012-11-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently after the reset the sysc is written with hardcoded values. The patch reads the sysc register and writes back the same value after reset. - Some unnecessary rev checks can be optimised. - Also due to whatever reason the hwmod flags are changed we will not reset the values. - In some of the cases the minor values of the 2430 register is different(0x37) in that case the autoidle setting may be missed. Signed-off-by: Shubhrajyoti D <shubhrajyoti@ti.com> Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
| * i2c: omap: Restore i2c context alwaysShubhrajyoti D2012-11-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently the restore is done based on the flag OMAP_I2C_FLAG_RESET_REGS_POSTIDLE. This helps the following - The driver is always capable of restoring regardless of the off mode support being there or not. - While testing omap2430 it is found that in case of certain error paths (timeout) a reset is done. However the restore never happens as it is dependent on the POSTIDLE flag. The other option would be to call a restore in the reset case. As there are only a few registers to be restored the penalty in the idle case should not be much. Reviewed-by: Felipe Balbi <balbi@ti.com> Signed-off-by: Shubhrajyoti D <shubhrajyoti@ti.com> Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
| * i2c: omap: make reset a seperate functionShubhrajyoti D2012-11-14
| | | | | | | | | | | | | | | | | | | | | | | | Implement reset as a separate function. This will enable us to make sure that we don't do the calculation again on every transfer. Also at probe the reset is not added as the hwmod is doing that for us. Reviewed-by: Felipe Balbi <balbi@ti.com> Signed-off-by: Shubhrajyoti D <shubhrajyoti@ti.com> Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
| * i2c: omap: re-factor omap_i2c_init functionShubhrajyoti D2012-11-14
| | | | | | | | | | | | | | | | | | | | re-factor omap_i2c_init() so that we can re-use it for resume. While at it also remove the bufstate variable as we write it in omap_i2c_resize_fifo for every transfer. Reviewed-by: Felipe Balbi <balbi@ti.com> Signed-off-by: Shubhrajyoti D <shubhrajyoti@ti.com> Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
| * ARM: i2c: omap: Remove the i207 errata flagShubhrajyoti D2012-11-14
| | | | | | | | | | | | | | | | | | The commit [i2c: omap: use revision check for OMAP_I2C_FLAG_APPLY_ERRATA_I207] uses the revision id instead of the flag. So the flag can be safely removed. Reviewed-by: Felipe Balbi <balbi@ti.com> Signed-off-by: Shubhrajyoti D <shubhrajyoti@ti.com> Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
| * i2c: omap: remove the dtrevShubhrajyoti D2012-11-14
| | | | | | | | | | | | | | | | | | The dtrev is used only for the comments. Remove the same and use the scheme instead to know if it is version2. Signed-off-by: Shubhrajyoti D <shubhrajyoti@ti.com> Reviewed-by: Felipe Balbi <balbi@ti.com> Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
| * i2c: omap: use revision check for OMAP_I2C_FLAG_APPLY_ERRATA_I207Shubhrajyoti D2012-11-14
| | | | | | | | | | | | | | | | | | The errata i207 is enabled for 2430 and 3xxx. Use the revision check to enable the erratum instead. Reviewed-by: Felipe Balbi <balbi@ti.com> Signed-off-by: Shubhrajyoti D <shubhrajyoti@ti.com> Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
| * i2c: omap: Fix the revision register readShubhrajyoti D2012-11-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The revision register on OMAP4 is a 16-bit lo and a 16-bit hi. Currently the driver reads only the lower 8-bits. Fix the same by preventing the truncating of the rev register for OMAP4. Also use the scheme bit ie bit-14 of the hi register to know if it is OMAP_I2C_IP_VERSION_2. On platforms previous to OMAP4 the offset 0x04 is IE register whose bit-14 reset value is 0, the code uses the same to its advantage. Also since the omap_i2c_read_reg uses reg_map_ip_* a raw_readw is done to fetch the revision register. The dev->regs is populated after reading the rev_hi. A NULL check has been added in the resume handler to prevent the access before the setting of the regs. Signed-off-by: Shubhrajyoti D <shubhrajyoti@ti.com> Reviewed-by: Felipe Balbi <balbi@ti.com> Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
| * i2c: omap: adopt pinctrl supportSebastien Guiriec2012-11-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Some GPIO expanders need some early pin control muxing. Due to legacy boards sometimes the driver uses subsys_initcall instead of module_init. This patch takes advantage of defer probe feature and pin control in order to wait until pin control probing before GPIO driver probing. It has been tested on OMAP5 board with TCA6424 driver. Signed-off-by: Sebastien Guiriec <s-guiriec@ti.com> Acked-by: Shubhrajyoti D <shubhrajyoti@ti.com> Reviewed-by: Felipe Balbi <balbi@ti.com> Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
| * i2c: omap: ensure writes to dev->buf_len are orderedFelipe Balbi2012-11-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | if we allow compiler reorder our writes, we could fall into a situation where dev->buf_len is reset for no apparent reason. This bug was found with a simple script which would transfer data to an i2c client from 1 to 1024 bytes (a simple for loop), when we got to transfer sizes bigger than the fifo size, dev->buf_len was reset to zero before we had an oportunity to handle XDR Interrupt. Because dev->buf_len was zero, we entered omap_i2c_transmit_data() to transfer zero bytes, which would mean we would just silently exit omap_i2c_transmit_data() without actually writing anything to DATA register. That would cause XDR IRQ to trigger forever and we would never transfer the remaining bytes. After adding the memory barrier, we also drop resetting dev->buf_len to zero in omap_i2c_xfer_msg() because both omap_i2c_transmit_data() and omap_i2c_receive_data() will act until dev->buf_len reaches zero, rendering the other write in omap_i2c_xfer_msg() redundant. This patch has been tested with pandaboard for a few iterations of the script mentioned above. Signed-off-by: Felipe Balbi <balbi@ti.com> Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
| * Revert "ARM: OMAP: convert I2C driver to PM QoS for MPU latency constraints"Paul Walmsley2012-11-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This reverts commit 3db11feffc1ad2ab9dea27789e6b5b3032827adc (ARM: OMAP: convert I2C driver to PM QoS for MPU latency constraints). This commit causes I2C timeouts to appear on several OMAP3430/3530-based boards: http://marc.info/?l=linux-arm-kernel&m=135071372426971&w=2 http://marc.info/?l=linux-arm-kernel&m=135067558415214&w=2 http://marc.info/?l=linux-arm-kernel&m=135216013608196&w=2 and appears to have been sent for merging before one of its prerequisites was merged: http://marc.info/?l=linux-arm-kernel&m=135219411617621&w=2 Signed-off-by: Paul Walmsley <paul@pwsan.com> Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
| * i2c: at91: fix SMBus quick commandLudovic Desroches2012-11-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | The driver claims to support SMBus quick command but it was not the case. This patch fixes this issue. Without it, i2cdetect finds imaginary devices. And with some IP versions, trying to send 0 byte can cause issue when writing data to an EEPROM. Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com> Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> [wsa: improved the commit message] Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
| * i2c: i2c-gpio: fix name issue with multiple i2c gpio nodesBo Shen2012-11-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When having multiple i2c-gpio nodes, the name for each is same. So add the patch to fix it. The adap->name printing information was added by myself without this patch the log information is as following ---<8--- adap->name = i2c-gpio-1 i2c-gpio i2c.2: using pins 30 (SDA) and 31 (SCL) adap->name = i2c-gpio-1 i2c-gpio i2c.3: using pins 64 (SDA) and 65 (SCL) --->8--- with this patch, the log information is as following ---<8--- adap->name = i2c.2 i2c-gpio i2c.2: using pins 30 (SDA) and 31 (SCL) adap->name = i2c.3 i2c-gpio i2c.3: using pins 64 (SDA) and 65 (SCL) --->8--- Signed-off-by: Bo Shen <voice.shen@atmel.com> Reviewed-by: Stephen Warren <swarren@nvidia.com> [wsa: minor fixes to the commit mesage] Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
| * i2c: ocores: Use devm_request_and_ioremap()Thierry Reding2012-11-13
| | | | | | | | | | | | | | | | | | Replacing the devm_request_mem_region() and devm_ioremap_nocache() calls by a single call to devm_request_and_ioremap() simplifies the code. Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de> Acked-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
| * i2c: rcar: fix section mismatchWolfram Sang2012-11-13
| | | | | | | | | | | | | | | | | | | | | | | | Give the driver struct a name according to the 'standard' to fix: WARNING: vmlinux.o(.data+0x11798): Section mismatch in reference from the variable rcar_i2c_drv to the function .devinit.text:rcar_i2c_probe() ... WARNING: vmlinux.o(.data+0x1179c): Section mismatch in reference from the variable rcar_i2c_drv to the function .devexit.text:rcar_i2c_remove() Reported-by: Simon Horman <horms@verge.net.au> Signed-off-by: Wolfram Sang <w.sang@pengutronix.de> Cc: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
| * i2c: rcar: used devm_request_and_ioremap() instead of devm_ioremap()Kuninori Morimoto2012-11-13
| | | | | | | | | | Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
| * i2c: nomadik: Fix the usage of wait_for_completion_timeoutChuansheng Liu2012-11-12
| | | | | | | | | | | | | | | | | | | | The return value of wait_for_completion_timeout() is always >= 0 with unsigned int type. So the condition "ret < 0" or "ret >= 0" is pointless. Signed-off-by: liu chuansheng <chuansheng.liu@intel.com> Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
* | Merge tag 'mfd-3.8-1' of ↵Linus Torvalds2012-12-16
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6 Pull MFS update from Samuel Ortiz: "This is the MFD patch set for the 3.8 merge window. We have several new drivers, most of the time coming with their sub devices drivers: - Austria Microsystem's AS3711 - Nano River's viperboard - TI's TPS80031, AM335x TS/ADC, - Realtek's MMC/memstick card reader - Nokia's retu We also got some notable cleanups and improvements: - tps6586x got converted to IRQ domains. - tps65910 and tps65090 moved to the regmap IRQ API. - STMPE is now Device Tree aware. - A general twl6040 and twl-core cleanup, with moves to the regmap I/O and IRQ APIs and a conversion to the recently added PWM framework. - sta2x11 gained regmap support. Then the rest is mostly tiny cleanups and fixes, among which we have Mark's wm5xxx and wm8xxx patchset." Far amount of annoying but largely trivial conflicts. Many due to __devinit/exit removal, others due to one or two of the new drivers also having come in through another tree. * tag 'mfd-3.8-1' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6: (119 commits) mfd: tps6507x: Convert to devm_kzalloc mfd: stmpe: Update DT support for stmpe driver mfd: wm5102: Add readback of DSP status 3 register mfd: arizona: Log if we fail to create the primary IRQ domain mfd: tps80031: MFD_TPS80031 needs to select REGMAP_IRQ mfd: tps80031: Add terminating entry for tps80031_id_table mfd: sta2x11: Fix potential NULL pointer dereference in __sta2x11_mfd_mask() mfd: wm5102: Add tuning for revision B mfd: arizona: Defer patch initialistation until after first device boot mfd: tps65910: Fix wrong ack_base register mfd: tps65910: Remove unused data mfd: stmpe: Get rid of irq_invert_polarity mfd: ab8500-core: Fix invalid free of devm_ allocated data mfd: wm5102: Mark DSP memory regions as volatile mfd: wm5102: Correct default for LDO1_CONTROL_2 mfd: arizona: Register haptics devices mfd: wm8994: Make current device behaviour the default mfd: tps65090: MFD_TPS65090 needs to select REGMAP_IRQ mfd: Fix stmpe.c build when OF is not enabled mfd: jz4740-adc: Use devm_kzalloc ...
| * | i2c: Add viperboard i2c master driverLars Poeschel2012-11-20
| |/ | | | | | | | | | | | | | | This adds the mfd cell to use the i2c part of the Nano River Technologies viperboard as i2c master. Signed-off-by: Lars Poeschel <poeschel@lemonage.de> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
* | i2c-piix4: Convert dev_printk(KERN_<LEVEL> to dev_<level>(Joe Perches2012-12-16
| | | | | | | | | | | | | | | | | | dev_<level> calls take less code than dev_printk(KERN_<LEVEL> and reducing object size is good. Coalesce formats for easier grep. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Jean Delvare <khali@linux-fr.org>
* | i2c-i801: Enable interrupts for all post-ICH5 chipsJean Delvare2012-12-16
| | | | | | | | | | | | | | | | | | I did not receive a single bug report after interrupt support was added for a limited number of chips. So I'd say the code is good and should be enabled for all supported chips, that is: ICH5 and later. Signed-off-by: Jean Delvare <khali@linux-fr.org> Reviewed-by: Daniel Kurtz <djkurtz@chromium.org>
* | i2c-i801: Add device tree supportThierry Reding2012-12-16
| | | | | | | | | | | | | | | | Add support for probing slave devices parsed from the device tree. Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de> Acked-by: Wolfram Sang <w.sang@pengutronix.de> Signed-off-by: Jean Delvare <khali@linux-fr.org>
* | Merge branch 'for-linus' of ↵Linus Torvalds2012-12-13
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial Pull trivial branch from Jiri Kosina: "Usual stuff -- comment/printk typo fixes, documentation updates, dead code elimination." * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (39 commits) HOWTO: fix double words typo x86 mtrr: fix comment typo in mtrr_bp_init propagate name change to comments in kernel source doc: Update the name of profiling based on sysfs treewide: Fix typos in various drivers treewide: Fix typos in various Kconfig wireless: mwifiex: Fix typo in wireless/mwifiex driver messages: i2o: Fix typo in messages/i2o scripts/kernel-doc: check that non-void fcts describe their return value Kernel-doc: Convention: Use a "Return" section to describe return values radeon: Fix typo and copy/paste error in comments doc: Remove unnecessary declarations from Documentation/accounting/getdelays.c various: Fix spelling of "asynchronous" in comments. Fix misspellings of "whether" in comments. eisa: Fix spelling of "asynchronous". various: Fix spelling of "registered" in comments. doc: fix quite a few typos within Documentation target: iscsi: fix comment typos in target/iscsi drivers treewide: fix typo of "suport" in various comments and Kconfig treewide: fix typo of "suppport" in various comments ...
| * | Fix misspellings of "whether" in comments.Adam Buchbinder2012-11-19
| | | | | | | | | | | | | | | | | | | | | | | | "Whether" is misspelled in various comments across the tree; this fixes them. No code changes. Signed-off-by: Adam Buchbinder <adam.buchbinder@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
* | | Merge tag 'cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-socLinus Torvalds2012-12-12
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull ARM SoC cleanups on various subarchitectures from Olof Johansson: "Cleanup patches for various ARM platforms and some of their associated drivers. There's also a branch in here that enables Freescale i.MX to be part of the multiplatform support -- the first "big" SoC that is moved over (more multiplatform work comes in a separate branch later during the merge window)." Conflicts fixed as per Olof, including a silent semantic one in arch/arm/mach-omap2/board-generic.c (omap_prcm_restart() was renamed to omap3xxx_restart(), and a new user of the old name was added). * tag 'cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (189 commits) ARM: omap: fix typo on timer cleanup ARM: EXYNOS: Remove unused regs-mem.h file ARM: EXYNOS: Remove unused non-dt support for dwmci controller ARM: Kirkwood: Use hw_pci.ops instead of hw_pci.scan ARM: OMAP3: cm-t3517: use GPTIMER for system clock ARM: OMAP2+: timer: remove CONFIG_OMAP_32K_TIMER ARM: SAMSUNG: use devm_ functions for ADC driver ARM: EXYNOS: no duplicate mask/unmask in eint0_15 ARM: S3C24XX: SPI clock channel setup is fixed for S3C2443 ARM: EXYNOS: Remove i2c0 resource information and setting of device names ARM: Kirkwood: checkpatch cleanups ARM: Kirkwood: Fix sparse warnings. ARM: Kirkwood: Remove unused includes ARM: kirkwood: cleanup lsxl board includes ARM: integrator: use BUG_ON where possible ARM: integrator: push down SC dependencies ARM: integrator: delete static UART1 mapping ARM: integrator: delete SC mapping on the CP ARM: integrator: remove static CP syscon mapping ARM: integrator: remove static AP syscon mapping ...
| * \ \ Merge tag 'v3.7-rc7' into next/cleanupOlof Johansson2012-11-26
| |\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Merging in mainline back to next/cleanup since it has collected a few conflicts between fixes going upstream and some of the cleanup patches. Git doesn't auto-resolve some of them, and they're mostly noise so let's take care of it locally. Conflicts are in: arch/arm/mach-omap2/omap_hwmod_44xx_data.c arch/arm/plat-omap/i2c.c drivers/video/omap2/dss/dss.c Signed-off-by: Olof Johansson <olof@lixom.net>
| * \ \ \ Merge branch 'cleanups/dma' into next/cleanupArnd Bergmann2012-11-13
| |\ \ \ \ | | | |_|/ | | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Separate patches from Marek Szyprowski <m.szyprowski@samsung.com>: Commit e9da6e9905e639b0 ("ARM: dma-mapping: remove custom consistent dma region") replaced custom consistent memory handling, so setting consistent dma memory size is not longer required. This patch series cleans sub-architecture platform code to remove all calls to the obsolated init_consistent_dma_size() function and finally removes the init_consistent_dma_size() stub itself. * cleanups/dma: ARM: at91: remove obsoleted init_consistent_dma_size() ARM: u300: remove obsoleted init_consistent_dma_size() ARM: dma-mapping: remove init_consistent_dma_size() stub ARM: shmobile: remove obsoleted init_consistent_dma_size() ARM: davinci: remove obsoleted init_consistent_dma_size() ARM: samsung: remove obsoleted init_consistent_dma_size() Signed-off-by: Arnd Bergmann <arnd@arndb.de>
| * | | | i2c: imx: remove cpu_is_xxx by using platform_device_idShawn Guo2012-10-14
| | |_|/ | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is some amount of work left/forgot from device tree conversion. Instead of checking cpu_is_xxx to determine the controller type, the driver should use platform_device_id, which should match the device tree compatible string. The patch changes the driver to use platform_device_id rather than cpu_is_xxx to determine the controller type/version. It also updates the platform code and device tree source accordingly. As the result, mach/hardware.h inclusion gets removed from the driver. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Acked-by: Sascha Hauer <s.hauer@pengutronix.de> Acked-by: Arnd Bergmann <arnd@arndb.de> Cc: Wolfram Sang <w.sang@pengutronix.de> Cc: linux-i2c@vger.kernel.org
* | | | Merge tag 'pm+acpi-for-3.8-rc1' of ↵Linus Torvalds2012-12-11
|\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull ACPI and power management updates from Rafael Wysocki: - Introduction of device PM QoS flags. - ACPI device power management update allowing subsystems other than PCI to use it more easily. - ACPI device enumeration rework allowing additional kinds of devices to be enumerated via ACPI. From Mika Westerberg, Adrian Hunter, Mathias Nyman, Andy Shevchenko, and Rafael J. Wysocki. - ACPICA update to version 20121018 from Bob Moore and Lv Zheng. - ACPI memory hotplug update from Wen Congyang and Yasuaki Ishimatsu. - Introduction of acpi_handle_<level>() messaging macros and ACPI-based CPU hot-remove support from Toshi Kani. - ACPI EC updates from Feng Tang. - cpufreq updates from Viresh Kumar, Fabio Baltieri and others. - cpuidle changes to quickly notice governor prediction failure from Youquan Song. - Support for using multiple cpuidle drivers at the same time and cpuidle cleanups from Daniel Lezcano. - devfreq updates from Nishanth Menon and others. - cpupower update from Thomas Renninger. - Fixes and small cleanups all over the place. * tag 'pm+acpi-for-3.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (196 commits) mmc: sdhci-acpi: enable runtime-pm for device HID INT33C6 ACPI: add Haswell LPSS devices to acpi_platform_device_ids list ACPI: add documentation about ACPI 5 enumeration pnpacpi: fix incorrect TEST_ALPHA() test ACPI / PM: Fix header of acpi_dev_pm_detach() in acpi.h ACPI / video: ignore BIOS initial backlight value for HP Folio 13-2000 ACPI : do not use Lid and Sleep button for S5 wakeup ACPI / PNP: Do not crash due to stale pointer use during system resume ACPI / video: Add "Asus UL30VT" to ACPI video detect blacklist ACPI: do acpisleep dmi check when CONFIG_ACPI_SLEEP is set spi / ACPI: add ACPI enumeration support gpio / ACPI: add ACPI support PM / devfreq: remove compiler error with module governors (2) cpupower: IvyBridge (0x3a and 0x3e models) support cpupower: Provide -c param for cpupower monitor to schedule process on all cores cpupower tools: Fix warning and a bug with the cpu package count cpupower tools: Fix malloc of cpu_info structure cpupower tools: Fix issues with sysfs_topology_read_file cpupower tools: Fix minor warnings cpupower tools: Update .gitignore for files created in the debug directories ...
| * \ \ \ Merge branch 'acpi-enumeration'Rafael J. Wysocki2012-11-29
| |\ \ \ \ | | |_|_|/ | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * acpi-enumeration: ACPI: remove unnecessary INIT_LIST_HEAD ACPI / platform: include missed header into acpi_platform.c platform / ACPI: Attach/detach ACPI PM during probe/remove/shutdown mmc: sdhci-acpi: add SDHCI ACPI driver ACPI: add SDHCI to ACPI platform devices ACPI / PNP: skip ACPI device nodes associated with physical nodes already i2c / ACPI: add ACPI enumeration support ACPI / platform: Initialize ACPI handles of platform devices in advance ACPI / driver core: Introduce struct acpi_dev_node and related macros ACPI: Allow ACPI handles of devices to be initialized in advance ACPI / resources: Use AE_CTRL_TERMINATE to terminate resources walks ACPI: Centralized processing of ACPI device resources ACPI / platform: Use common ACPI device resource parsing routines ACPI: Move device resources interpretation code from PNP to ACPI core ACPI / platform: use ACPI device name instead of _HID._UID ACPI: Add support for platform bus type ACPI / ia64: Export acpi_[un]register_gsi() ACPI / x86: Export acpi_[un]register_gsi() ACPI: Provide generic functions for matching ACPI device nodes driver core / ACPI: Move ACPI support to core device and driver types
| | * | | i2c / ACPI: add ACPI enumeration supportMika Westerberg2012-11-23
| | | |/ | | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ACPI 5 introduced I2cSerialBus resource that makes it possible to enumerate and configure the I2C slave devices behind the I2C controller. This patch adds helper functions to support I2C slave enumeration. An ACPI enabled I2C controller driver only needs to call acpi_i2c_register_devices() in order to get its slave devices enumerated, created and bound to the corresponding ACPI handle. Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* | | | Merge tag 'devicetree-for-linus' of git://git.secretlab.ca/git/linux-2.6Linus Torvalds2012-12-11
|\ \ \ \ | |/ / / |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull device tree changes from Grant Likely: "Here are the DT changes I've got queued up for v3.8. As described below, there are a lot of bug fixes here and documentation updates but nothing major: Bug fixes, little cleanups, and documentation changes. The most invasive thing here touches a bunch of the arch directories to use a common build rule for .dtb files. There are no major changes to functionality here other than a few new helper functions." * tag 'devicetree-for-linus' of git://git.secretlab.ca/git/linux-2.6: (34 commits) arm64: Fix the dtbs target building mtd: nand: davinci: fix the binding documentation rtc: rtc-mv: Add the device tree binding documentation devicetree/bindings: Move gpio-leds binding into leds directory of/vendor-prefixes: add Imagination Technologies microblaze: use new common dtc rule c6x: use new common dtc rule openrisc: use new common dtc rule arm64: Add dtbs target for building all the enabled dtb files arm64: use new common dtc rule ARM: dt: change .dtb build rules to build in dts directory kbuild: centralize .dts->.dtb rule Fix build when CONFIG_W1_MASTER_GPIO=m b exporting "allnodes" of/spi: Honour "status=disabled" property of device of_mdio: Honour "status=disabled" property of device of_i2c: Honour "status=disabled" property of device powerpc: Fix fallout from device_node->name constification of: add 'const' for of_parse_phandle parameter *np Documentation: correct of_platform_populate() argument list script: dtc: clean generated files ...
| * | | bindings: i2c: use consistent naming for i2c binding descriptionsWolfram Sang2012-11-15
| |/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Filenames of devictree binding documentation seems to be arbitrary and for me it is unneeded hazzle to find the corresponding documentation for a specific driver. Naming the description the same as the driver is a lot easier and makes sense to me since the driver defines the binding it understands. Also, remove a reference in one source to the binding documentation, since path information easily gets stale. Signed-off-by: Wolfram Sang <wolfram@the-dreams.de> Cc: Rob Herring <robherring2@gmail.com> Cc: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
* | | Merge branch 'i2c-embedded/for-current' of ↵Linus Torvalds2012-11-23
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.pengutronix.de/git/wsa/linux Pull i2c fixes from Wolfram Sang: "Bugfixes for the i2c subsystem. Except for a few one-liners, there is mainly one revert because of an overlooked dependency. Since there is no linux-next at the moment, I did some extra testing, and all was fine for me." * 'i2c-embedded/for-current' of git://git.pengutronix.de/git/wsa/linux: i2c: mxs: Handle i2c DMA failure properly i2c: s3c2410: Fix code to free gpios i2c: omap: ensure writes to dev->buf_len are ordered Revert "ARM: OMAP: convert I2C driver to PM QoS for MPU latency constraints" i2c: at91: fix SMBus quick command
| * | | i2c: mxs: Handle i2c DMA failure properlyMarek Vasut2012-11-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Properly terminate the DMA transfer in case the DMA PIO transfer or setup fails for any reason. Signed-off-by: Marek Vasut <marex@denx.de> Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
| * | | i2c: s3c2410: Fix code to free gpiosAbhilash Kesavan2012-11-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Store the requested gpios so that they can be freed on error/removal. Signed-off-by: Abhilash Kesavan <a.kesavan@samsung.com> Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
| * | | i2c: omap: ensure writes to dev->buf_len are orderedFelipe Balbi2012-11-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | if we allow compiler reorder our writes, we could fall into a situation where dev->buf_len is reset for no apparent reason. This bug was found with a simple script which would transfer data to an i2c client from 1 to 1024 bytes (a simple for loop), when we got to transfer sizes bigger than the fifo size, dev->buf_len was reset to zero before we had an oportunity to handle XDR Interrupt. Because dev->buf_len was zero, we entered omap_i2c_transmit_data() to transfer zero bytes, which would mean we would just silently exit omap_i2c_transmit_data() without actually writing anything to DATA register. That would cause XDR IRQ to trigger forever and we would never transfer the remaining bytes. After adding the memory barrier, we also drop resetting dev->buf_len to zero in omap_i2c_xfer_msg() because both omap_i2c_transmit_data() and omap_i2c_receive_data() will act until dev->buf_len reaches zero, rendering the other write in omap_i2c_xfer_msg() redundant. This patch has been tested with pandaboard for a few iterations of the script mentioned above. Signed-off-by: Felipe Balbi <balbi@ti.com> Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
| * | | Revert "ARM: OMAP: convert I2C driver to PM QoS for MPU latency constraints"Paul Walmsley2012-11-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This reverts commit 3db11feffc1ad2ab9dea27789e6b5b3032827adc (ARM: OMAP: convert I2C driver to PM QoS for MPU latency constraints). This commit causes I2C timeouts to appear on several OMAP3430/3530-based boards: http://marc.info/?l=linux-arm-kernel&m=135071372426971&w=2 http://marc.info/?l=linux-arm-kernel&m=135067558415214&w=2 http://marc.info/?l=linux-arm-kernel&m=135216013608196&w=2 and appears to have been sent for merging before one of its prerequisites was merged: http://marc.info/?l=linux-arm-kernel&m=135219411617621&w=2 Signed-off-by: Paul Walmsley <paul@pwsan.com> Acked-by: Jean Pihet <j-pihet@ti.com> Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
| * | | i2c: at91: fix SMBus quick commandLudovic Desroches2012-11-14
| |/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The driver claims to support SMBus quick command but it was not the case. This patch fixes this issue. Without it, i2cdetect finds imaginary devices. And with some IP versions, trying to send 0 byte can cause issue when writing data to an EEPROM. Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com> Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> [wsa: improved the commit message] Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
* / / i2c-mux-pinctrl: Fix probe error pathGuenter Roeck2012-11-13
|/ / | | | | | | | | | | | | | | | | When allocating the memory for i2c busses, the code checked the wrong variable and thus never detected if there was a memory error. Signed-off-by: Guenter Roeck <linux@roeck-us.net> Cc: stable@vger.kernel.org Signed-off-by: Jean Delvare <khali@linux-fr.org>
* | Merge branch 'i2c-embedded/for-current' of ↵Linus Torvalds2012-11-03
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.pengutronix.de/git/wsa/linux Pull i2c embedded fixes from Wolfram Sang: "Two patches are usual stuff. The bigger patch is needed to correct a wrong decision made in this merge window. We hoped to get the PIOQUEUE mode in the mxs driver working with DMA, but it turned out to be too broken (leading to data loss), so we now think it is best to remove it entirely and work only with DMA now. The patch should be in 3.7. IMO, so users never get the chance to use both modes in parallel." * 'i2c-embedded/for-current' of git://git.pengutronix.de/git/wsa/linux: i2c: tegra: set irq name as device name i2c-nomadik: Fixup clock handling i2c: mxs: remove broken PIOQUEUE support
| * | i2c: tegra: set irq name as device nameLaxman Dewangan2012-11-02
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When watching the irqs name of tegra i2c, all instances irq name shows as tegra_i2c. Passing the device name properly to have the irq names with instance like tegra-i2c.0, tegra-i2c.1 etc. Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Acked-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
generated by cgit v1.2.2 (git 2.25.0) at 2025-04-03 13:09:10 -0400