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* i2c: robotfuzz-osif: fix control-request directionsJohan Hovold2021-06-241-2/+2
| | | | | | | | | | | | | | | | | | | The direction of the pipe argument must match the request-type direction bit or control requests may fail depending on the host-controller-driver implementation. Control transfers without a data stage are treated as OUT requests by the USB stack and should be using usb_sndctrlpipe(). Failing to do so will now trigger a warning. Fix the OSIFI2C_SET_BIT_RATE and OSIFI2C_STOP requests which erroneously used the osif_usb_read() helper and set the IN direction bit. Reported-by: syzbot+9d7dadd15b8819d73f41@syzkaller.appspotmail.com Fixes: 83e53a8f120f ("i2c: Add bus driver for for OSIF USB i2c device.") Cc: stable@vger.kernel.org # 3.14 Signed-off-by: Johan Hovold <johan@kernel.org> Signed-off-by: Wolfram Sang <wsa@kernel.org>
* i2c: dev: Add __user annotationAndreas Hecht2021-06-241-1/+1
| | | | | | | | | | | | | | | Fix Sparse warnings: drivers/i2c/i2c-dev.c:546:19: warning: incorrect type in assignment (different address spaces) drivers/i2c/i2c-dev.c:549:53: warning: incorrect type in argument 2 (different address spaces) compat_ptr() returns a pointer tagged __user which gets assigned to a pointer missing the __user annotation. The same pointer is passed to copy_from_user() as an argument where it is expected to have the __user annotation. Fix both by adding the __user annotation to the pointer. Fixes: 7d5cb45655f2 ("i2c compat ioctls: move to ->compat_ioctl()") Signed-off-by: Andreas Hecht <andreas.e.hecht@gmail.com> Signed-off-by: Wolfram Sang <wsa@kernel.org>
* i2c: cp2615: check for allocation failure in cp2615_i2c_recv()Dan Carpenter2021-06-201-4/+10
| | | | | | | | | We need to add a check for if the kzalloc() fails. Fixes: 4a7695429ead ("i2c: cp2615: add i2c driver for Silicon Labs' CP2615 Digital Audio Bridge") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Reviewed-by: Bence Csókás <bence98@sch.bme.hu> Signed-off-by: Wolfram Sang <wsa@kernel.org>
* i2c: i801: Ensure that SMBHSTSTS_INUSE_STS is cleared when leaving i801_accessHeiner Kallweit2021-06-201-0/+3
| | | | | | | | | | | | | | | | | | | | | As explained in [0] currently we may leave SMBHSTSTS_INUSE_STS set, thus potentially breaking ACPI/BIOS usage of the SMBUS device. Seems patch [0] needs a little bit more of review effort, therefore I'd suggest to apply a part of it as quick win. Just clearing SMBHSTSTS_INUSE_STS when leaving i801_access() should fix the referenced issue and leaves more time for discussing a more sophisticated locking handling. [0] https://www.spinics.net/lists/linux-i2c/msg51558.html Fixes: 01590f361e94 ("i2c: i801: Instantiate SPD EEPROMs automatically") Suggested-by: Hector Martin <marcan@marcan.st> Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> Reviewed-by: Hector Martin <marcan@marcan.st> Reviewed-by: Jean Delvare <jdelvare@suse.de> Tested-by: Jean Delvare <jdelvare@suse.de> Signed-off-by: Wolfram Sang <wsa@kernel.org>
* i2c: qcom-geni: Suspend and resume the bus during SYSTEM_SLEEP_PM opsRoja Rani Yarubandi2021-06-041-1/+11
| | | | | | | | | | Mark bus as suspended during system suspend to block the future transfers. Implement geni_i2c_resume_noirq() to resume the bus. Fixes: 37692de5d523 ("i2c: i2c-qcom-geni: Add bus driver for the Qualcomm GENI I2C controller") Signed-off-by: Roja Rani Yarubandi <rojay@codeaurora.org> Reviewed-by: Stephen Boyd <swboyd@chromium.org> Signed-off-by: Wolfram Sang <wsa@kernel.org>
* i2c: qcom-geni: Add shutdown callback for i2cRoja Rani Yarubandi2021-06-041-0/+9
| | | | | | | | | | | | | | | | If the hardware is still accessing memory after SMMU translation is disabled (as part of smmu shutdown callback), then the IOVAs (I/O virtual address) which it was using will go on the bus as the physical addresses which will result in unknown crashes like NoC/interconnect errors. So, implement shutdown callback for i2c driver to suspend the bus during system "reboot" or "shutdown". Fixes: 37692de5d523 ("i2c: i2c-qcom-geni: Add bus driver for the Qualcomm GENI I2C controller") Signed-off-by: Roja Rani Yarubandi <rojay@codeaurora.org> Reviewed-by: Stephen Boyd <swboyd@chromium.org> Signed-off-by: Wolfram Sang <wsa@kernel.org>
* i2c: tegra-bpmp: Demote kernel-doc abusesLee Jones2021-06-031-2/+2
| | | | | | | | | | | | | | | | | | | Fixes the following W=1 kernel build warning(s): drivers/i2c/busses/i2c-tegra-bpmp.c:86: warning: Function parameter or member 'i2c' not described in 'tegra_bpmp_serialize_i2c_msg' drivers/i2c/busses/i2c-tegra-bpmp.c:86: warning: Function parameter or member 'request' not described in 'tegra_bpmp_serialize_i2c_msg' drivers/i2c/busses/i2c-tegra-bpmp.c:86: warning: Function parameter or member 'msgs' not described in 'tegra_bpmp_serialize_i2c_msg' drivers/i2c/busses/i2c-tegra-bpmp.c:86: warning: Function parameter or member 'num' not described in 'tegra_bpmp_serialize_i2c_msg' drivers/i2c/busses/i2c-tegra-bpmp.c:86: warning: expecting prototype for The serialized I2C format is simply the following(). Prototype was for tegra_bpmp_serialize_i2c_msg() instead drivers/i2c/busses/i2c-tegra-bpmp.c:130: warning: Function parameter or member 'i2c' not described in 'tegra_bpmp_i2c_deserialize' drivers/i2c/busses/i2c-tegra-bpmp.c:130: warning: Function parameter or member 'response' not described in 'tegra_bpmp_i2c_deserialize' drivers/i2c/busses/i2c-tegra-bpmp.c:130: warning: Function parameter or member 'msgs' not described in 'tegra_bpmp_i2c_deserialize' drivers/i2c/busses/i2c-tegra-bpmp.c:130: warning: Function parameter or member 'num' not described in 'tegra_bpmp_i2c_deserialize' drivers/i2c/busses/i2c-tegra-bpmp.c:130: warning: expecting prototype for The data in the BPMP(). Prototype was for tegra_bpmp_i2c_deserialize() instead Signed-off-by: Lee Jones <lee.jones@linaro.org> Acked-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Wolfram Sang <wsa@kernel.org>
* i2c: altera: Fix formatting issue in struct and demote unworthy kernel-doc ↵Lee Jones2021-06-031-5/+4
| | | | | | | | | | | | | | | headers Fixes the following W=1 kernel build warning(s): drivers/i2c/busses/i2c-altera.c:74: warning: cannot understand function prototype: 'struct altr_i2c_dev ' drivers/i2c/busses/i2c-altera.c:180: warning: Function parameter or member 'idev' not described in 'altr_i2c_transfer' drivers/i2c/busses/i2c-altera.c:180: warning: Function parameter or member 'data' not described in 'altr_i2c_transfer' drivers/i2c/busses/i2c-altera.c:193: warning: Function parameter or member 'idev' not described in 'altr_i2c_empty_rx_fifo' drivers/i2c/busses/i2c-altera.c:209: warning: Function parameter or member 'idev' not described in 'altr_i2c_fill_tx_fifo' Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Wolfram Sang <wsa@kernel.org>
* i2c: s3c2410: fix possible NULL pointer deref on read message after writeKrzysztof Kozlowski2021-05-281-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Interrupt handler processes multiple message write requests one after another, till the driver message queue is drained. However if driver encounters a read message without preceding START, it stops the I2C transfer as it is an invalid condition for the controller. At least the comment describes a requirement "the controller forces us to send a new START when we change direction". This stop results in clearing the message queue (i2c->msg = NULL). The code however immediately jumped back to label "retry_write" which dereferenced the "i2c->msg" making it a possible NULL pointer dereference. The Coverity analysis: 1. Condition !is_msgend(i2c), taking false branch. if (!is_msgend(i2c)) { 2. Condition !is_lastmsg(i2c), taking true branch. } else if (!is_lastmsg(i2c)) { 3. Condition i2c->msg->flags & 1, taking true branch. if (i2c->msg->flags & I2C_M_RD) { 4. write_zero_model: Passing i2c to s3c24xx_i2c_stop, which sets i2c->msg to NULL. s3c24xx_i2c_stop(i2c, -EINVAL); 5. Jumping to label retry_write. goto retry_write; 6. var_deref_model: Passing i2c to is_msgend, which dereferences null i2c->msg. if (!is_msgend(i2c)) {" All previous calls to s3c24xx_i2c_stop() in this interrupt service routine are followed by jumping to end of function (acknowledging the interrupt and returning). This seems a reasonable choice also here since message buffer was entirely emptied. Addresses-Coverity: Explicit null dereferenced Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Signed-off-by: Wolfram Sang <wsa@kernel.org>
* i2c: mediatek: Disable i2c start_en and clear intr_stat brfore resetQii Wang2021-05-281-0/+5
| | | | | | | | | | | | | The i2c controller driver do dma reset after transfer timeout, but sometimes dma reset will trigger an unexpected DMA_ERR irq. It will cause the i2c controller to continuously send interrupts to the system and cause soft lock-up. So we need to disable i2c start_en and clear intr_stat to stop i2c controller before dma reset when transfer timeout. Fixes: aafced673c06("i2c: mediatek: move dma reset before i2c reset") Signed-off-by: Qii Wang <qii.wang@mediatek.com> Signed-off-by: Wolfram Sang <wsa@kernel.org>
* i2c: i801: Don't generate an interrupt on bus resetJean Delvare2021-05-271-4/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | Now that the i2c-i801 driver supports interrupts, setting the KILL bit in a attempt to recover from a timed out transaction triggers an interrupt. Unfortunately, the interrupt handler (i801_isr) is not prepared for this situation and will try to process the interrupt as if it was signaling the end of a successful transaction. In the case of a block transaction, this can result in an out-of-range memory access. This condition was reproduced several times by syzbot: https://syzkaller.appspot.com/bug?extid=ed71512d469895b5b34e https://syzkaller.appspot.com/bug?extid=8c8dedc0ba9e03f6c79e https://syzkaller.appspot.com/bug?extid=c8ff0b6d6c73d81b610e https://syzkaller.appspot.com/bug?extid=33f6c360821c399d69eb https://syzkaller.appspot.com/bug?extid=be15dc0b1933f04b043a https://syzkaller.appspot.com/bug?extid=b4d3fd1dfd53e90afd79 So disable interrupts while trying to reset the bus. Interrupts will be enabled again for the following transaction. Fixes: 636752bcb517 ("i2c-i801: Enable IRQ for SMBus transactions") Reported-by: syzbot+b4d3fd1dfd53e90afd79@syzkaller.appspotmail.com Signed-off-by: Jean Delvare <jdelvare@suse.de> Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: Jarkko Nikula <jarkko.nikula@linux.intel.com> Tested-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Signed-off-by: Wolfram Sang <wsa@kernel.org>
* i2c: mpc: implement erratum A-004447 workaroundChris Packham2021-05-271-2/+79
| | | | | | | | | The P2040/P2041 has an erratum where the normal i2c recovery mechanism does not work. Implement the alternative recovery mechanism documented in the P2040 Chip Errata Rev Q. Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz> Signed-off-by: Wolfram Sang <wsa@kernel.org>
* i2c: busses: i2c-stm32f4: Remove incorrectly placed ' ' from function nameLee Jones2021-05-271-1/+1
| | | | | | | | | | Fixes the following W=1 kernel build warning(s): drivers/i2c/busses/i2c-stm32f4.c:321: warning: expecting prototype for stm32f4_i2c_write_ byte()(). Prototype was for stm32f4_i2c_write_byte() instead Signed-off-by: Lee Jones <lee.jones@linaro.org> Reviewed-by: Alain Volmat <alain.volmat@foss.st.com> Signed-off-by: Wolfram Sang <wsa@kernel.org>
* i2c: busses: i2c-st: Fix copy/paste function misnaming issuesLee Jones2021-05-271-2/+2
| | | | | | | | | | | | | Fixes the following W=1 kernel build warning(s): drivers/i2c/busses/i2c-st.c:531: warning: expecting prototype for st_i2c_handle_write(). Prototype was for st_i2c_handle_read() instead drivers/i2c/busses/i2c-st.c:566: warning: expecting prototype for st_i2c_isr(). Prototype was for st_i2c_isr_thread() instead Fix the "enmpty" typo while here. Signed-off-by: Lee Jones <lee.jones@linaro.org> Reviewed-by: Alain Volmat <alain.volmat@foss.st.com> Signed-off-by: Wolfram Sang <wsa@kernel.org>
* i2c: busses: i2c-pnx: Provide descriptions for 'alg_data' data structureLee Jones2021-05-271-4/+4
| | | | | | | | | | | | | | | | | Fixes the following W=1 kernel build warning(s): drivers/i2c/busses/i2c-pnx.c:147: warning: Function parameter or member 'alg_data' not described in 'i2c_pnx_start' drivers/i2c/busses/i2c-pnx.c:147: warning: Excess function parameter 'adap' description in 'i2c_pnx_start' drivers/i2c/busses/i2c-pnx.c:202: warning: Function parameter or member 'alg_data' not described in 'i2c_pnx_stop' drivers/i2c/busses/i2c-pnx.c:202: warning: Excess function parameter 'adap' description in 'i2c_pnx_stop' drivers/i2c/busses/i2c-pnx.c:231: warning: Function parameter or member 'alg_data' not described in 'i2c_pnx_master_xmit' drivers/i2c/busses/i2c-pnx.c:231: warning: Excess function parameter 'adap' description in 'i2c_pnx_master_xmit' drivers/i2c/busses/i2c-pnx.c:301: warning: Function parameter or member 'alg_data' not described in 'i2c_pnx_master_rcv' drivers/i2c/busses/i2c-pnx.c:301: warning: Excess function parameter 'adap' description in 'i2c_pnx_master_rcv' Signed-off-by: Lee Jones <lee.jones@linaro.org> Acked-by: Vladimir Zapolskiy <vz@mleia.com> Signed-off-by: Wolfram Sang <wsa@kernel.org>
* i2c: busses: i2c-ocores: Place the expected function names into the ↵Lee Jones2021-05-271-4/+4
| | | | | | | | | | | | | | | | documentation headers Fixes the following W=1 kernel build warning(s): drivers/i2c/busses/i2c-ocores.c:253: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst drivers/i2c/busses/i2c-ocores.c:267: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst drivers/i2c/busses/i2c-ocores.c:299: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst drivers/i2c/busses/i2c-ocores.c:347: warning: expecting prototype for It handles an IRQ(). Prototype was for ocores_process_polling() instead Signed-off-by: Lee Jones <lee.jones@linaro.org> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Reviewed-by: Peter Korsgaard <peter@korsgaard.com> Signed-off-by: Wolfram Sang <wsa@kernel.org>
* i2c: busses: i2c-eg20t: Fix 'bad line' issue and provide description for ↵Lee Jones2021-05-271-1/+2
| | | | | | | | | | | | 'msgs' param Fixes the following W=1 kernel build warning(s): drivers/i2c/busses/i2c-eg20t.c:151: warning: bad line: PCH i2c controller drivers/i2c/busses/i2c-eg20t.c:369: warning: Function parameter or member 'msgs' not described in 'pch_i2c_writebytes' Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Wolfram Sang <wsa@kernel.org>
* i2c: busses: i2c-designware-master: Fix misnaming of 'i2c_dw_init_master()'Lee Jones2021-05-271-1/+1
| | | | | | | | | | Fixes the following W=1 kernel build warning(s): drivers/i2c/busses/i2c-designware-master.c:176: warning: expecting prototype for i2c_dw_init(). Prototype was for i2c_dw_init_master() instead Signed-off-by: Lee Jones <lee.jones@linaro.org> Acked-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Signed-off-by: Wolfram Sang <wsa@kernel.org>
* i2c: busses: i2c-cadence: Fix incorrectly documented 'enum cdns_i2c_slave_mode'Lee Jones2021-05-271-1/+1
| | | | | | | | | | Fixes the following W=1 kernel build warning(s): drivers/i2c/busses/i2c-cadence.c:157: warning: expecting prototype for enum cdns_i2c_slave_mode. Prototype was for enum cdns_i2c_slave_state instead Signed-off-by: Lee Jones <lee.jones@linaro.org> Reviewed-by: Michal Simek <michal.simek@xilinx.com> Signed-off-by: Wolfram Sang <wsa@kernel.org>
* i2c: busses: i2c-ali1563: File headers are not good candidates for kernel-docLee Jones2021-05-271-1/+1
| | | | | | | | | | Fixes the following W=1 kernel build warning(s): drivers/i2c/busses/i2c-ali1563.c:24: warning: expecting prototype for i2c(). Prototype was for ALI1563_MAX_TIMEOUT() instead Signed-off-by: Lee Jones <lee.jones@linaro.org> Reviewed-by: Jean Delvare <jdelvare@suse.de> Signed-off-by: Wolfram Sang <wsa@kernel.org>
* i2c: muxes: i2c-arb-gpio-challenge: Demote non-conformant kernel-doc headersLee Jones2021-05-271-2/+2
| | | | | | | | | | | | | | Fixes the following W=1 kernel build warning(s): drivers/i2c/muxes/i2c-arb-gpio-challenge.c:43: warning: Function parameter or member 'muxc' not described in 'i2c_arbitrator_select' drivers/i2c/muxes/i2c-arb-gpio-challenge.c:43: warning: Function parameter or member 'chan' not described in 'i2c_arbitrator_select' drivers/i2c/muxes/i2c-arb-gpio-challenge.c:86: warning: Function parameter or member 'muxc' not described in 'i2c_arbitrator_deselect' drivers/i2c/muxes/i2c-arb-gpio-challenge.c:86: warning: Function parameter or member 'chan' not described in 'i2c_arbitrator_deselect' Signed-off-by: Lee Jones <lee.jones@linaro.org> Acked-by: Douglas Anderson <dianders@chromium.org> Acked-by: Peter Rosin <peda@axentia.se> Signed-off-by: Wolfram Sang <wsa@kernel.org>
* i2c: busses: i2c-nomadik: Fix formatting issue pertaining to 'timeout'Lee Jones2021-05-271-1/+1
| | | | | | | | | | Fixes the following W=1 kernel build warning(s): drivers/i2c/busses/i2c-nomadik.c:184: warning: Function parameter or member 'timeout' not described in 'nmk_i2c_dev' Signed-off-by: Lee Jones <lee.jones@linaro.org> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Wolfram Sang <wsa@kernel.org>
* i2c: sh_mobile: Use new clock calculation formulas for RZ/G2EGeert Uytterhoeven2021-05-251-1/+1
| | | | | | | | | | | When switching the Gen3 SoCs to the new clock calculation formulas, the match entry for RZ/G2E added in commit 51243b73455f2d12 ("i2c: sh_mobile: Add support for r8a774c0 (RZ/G2E)") was forgotten. Fixes: e8a27567509b2439 ("i2c: sh_mobile: use new clock calculation formulas for Gen3") Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Fabrizio Castro <fabrizio.castro.jz@renesas.com> Signed-off-by: Wolfram Sang <wsa@kernel.org>
* i2c: I2C_HISI should depend on ACPIGeert Uytterhoeven2021-05-251-1/+1
| | | | | | | | | | | | The HiSilicon Kunpeng I2C controller driver relies on ACPI to probe for its presence. Hence add a dependency on ACPI, to prevent asking the user about this driver when configuring a kernel without ACPI firmware support. Fixes: d62fbdb99a85730a ("i2c: add support for HiSilicon I2C controller") Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Acked-by: Yicong Yang <yangyicong@hisilicon.com> Signed-off-by: Wolfram Sang <wsa@kernel.org>
* i2c: icy: Remove unused variable new_fwnode in icy_probe()Geert Uytterhoeven2021-05-251-1/+0
| | | | | | | | | | | | | | The last user of new_fwnode was removed, leading to: drivers/i2c/busses/i2c-icy.c: In function ‘icy_probe’: drivers/i2c/busses/i2c-icy.c:126:24: warning: unused variable ‘new_fwnode’ [-Wunused-variable] 126 | struct fwnode_handle *new_fwnode; | ^~~~~~~~~~ Fixes: dd7a37102b79ae55 ("i2c: icy: Constify the software node") Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Reviewed-by: Max Staudt <max@enpas.org> Signed-off-by: Wolfram Sang <wsa@kernel.org>
* i2c: qcom-geni: fix spelling mistake "unepxected" -> "unexpected"Colin Ian King2021-05-251-1/+1
| | | | | | | | There is a spelling mistake in an error message string, fix it. Signed-off-by: Colin Ian King <colin.king@canonical.com> Reviewed-by: Akash Asthana <akashast@codeaurora.org> Signed-off-by: Wolfram Sang <wsa@kernel.org>
* Merge branch 'i2c/for-5.13' of ↵Linus Torvalds2021-04-3040-655/+1847
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux Pull i2c updates from Wolfram Sang: - new drivers for Silicon Labs CP2615 and the HiSilicon I2C unit - bigger refactoring for the MPC driver - support for full software nodes - no need to work around with only properties anymore - we now have 'devm_i2c_add_adapter', too - sub-system wide fixes for the RPM refcounting problem which often caused a leak when an error was encountered during probe - the rest is usual driver updates and improvements * 'i2c/for-5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: (77 commits) i2c: mediatek: Use scl_int_delay_ns to compensate clock-stretching i2c: mediatek: Fix wrong dma sync flag i2c: mediatek: Fix send master code at more than 1MHz i2c: sh7760: fix IRQ error path i2c: i801: Add support for Intel Alder Lake PCH-M i2c: core: Fix spacing error by checkpatch i2c: s3c2410: simplify getting of_device_id match data i2c: nomadik: Fix space errors i2c: iop3xx: Fix coding style issues i2c: amd8111: Fix coding style issues i2c: mpc: Drop duplicate message from devm_platform_ioremap_resource() i2c: mpc: Use device_get_match_data() helper i2c: mpc: Remove CONFIG_PM_SLEEP ifdeffery i2c: mpc: Use devm_clk_get_optional() i2c: mpc: Update license and copyright i2c: mpc: Interrupt driven transfer i2c: sh7760: add IRQ check i2c: rcar: add IRQ check i2c: mlxbf: add IRQ check i2c: jz4780: add IRQ check ...
| * i2c: mediatek: Use scl_int_delay_ns to compensate clock-stretchingQii Wang2021-04-171-1/+5
| | | | | | | | | | | | | | | | | | | | The parameters of tSU,STA/tHD,STA/tSU,STOP maybe out of spec due to device clock-stretch or circuit loss, we could get a suitable scl_int_delay_ns from i2c_timings to compensate these parameters to meet the spec via EXT_CONF register. Signed-off-by: Qii Wang <qii.wang@mediatek.com> Signed-off-by: Wolfram Sang <wsa@kernel.org>
| * i2c: mediatek: Fix wrong dma sync flagQii Wang2021-04-171-1/+1
| | | | | | | | | | | | | | | | The right flag is apdma_sync when apdma remove hand-shake signel. Fixes: 05f6f7271a38 ("i2c: mediatek: Fix apdma and i2c hand-shake timeout") Signed-off-by: Qii Wang <qii.wang@mediatek.com> Signed-off-by: Wolfram Sang <wsa@kernel.org>
| * i2c: mediatek: Fix send master code at more than 1MHzQii Wang2021-04-171-4/+5
| | | | | | | | | | | | | | | | | | | | There are some omissions in the previous patch about replacing I2C_MAX_FAST_MODE__FREQ with I2C_MAX_FAST_MODE_PLUS_FREQ and need to fix it. Fixes: b44658e755b5("i2c: mediatek: Send i2c master code at more than 1MHz") Signed-off-by: Qii Wang <qii.wang@mediatek.com> Signed-off-by: Wolfram Sang <wsa@kernel.org>
| * i2c: sh7760: fix IRQ error pathSergey Shtylyov2021-04-171-1/+1
| | | | | | | | | | | | | | | | | | | | | | While adding the invalid IRQ check after calling platform_get_irq(), I managed to overlook that the driver has a complex error path in its probe() method, thus a simple *return* couldn't be used. Use a proper *goto* instead! Fixes: e5b2e3e74201 ("i2c: sh7760: add IRQ check") Signed-off-by: Sergey Shtylyov <s.shtylyov@omprussia.ru> Signed-off-by: Wolfram Sang <wsa@kernel.org>
| * i2c: i801: Add support for Intel Alder Lake PCH-MJarkko Nikula2021-04-171-0/+4
| | | | | | | | | | | | | | Add PCI ID of SMBus controller on Intel Alder Lake PCH-M. Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Signed-off-by: Wolfram Sang <wsa@kernel.org>
| * i2c: core: Fix spacing error by checkpatchTian Tao2021-04-171-1/+1
| | | | | | | | | | | | | | | | | | | | | | Fix the following checkpatch error: #614: FILE: drivers/i2c/i2c-core-base.c:614: + len = acpi_device_modalias(dev, buf, PAGE_SIZE -1); ^ No functional changes. Signed-off-by: Tian Tao <tiantao6@hisilicon.com> Signed-off-by: Wolfram Sang <wsa@kernel.org>
| * i2c: s3c2410: simplify getting of_device_id match dataKrzysztof Kozlowski2021-04-171-6/+3
| | | | | | | | | | | | | | | | Use of_device_get_match_data() to make the code slightly smaller. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Reviewed-by: Sylwester Nawrocki <snawrocki@kernel.org> Signed-off-by: Wolfram Sang <wsa@kernel.org>
| * i2c: nomadik: Fix space errorsTian Tao2021-04-151-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix the following checkpatch errors: ERROR: space prohibited before that ',' (ctx:WxW) #280: FILE: drivers/i2c/busses/i2c-nomadik.c:280: + i2c_clr_bit(dev->virtbase + I2C_CR , I2C_CR_PE); ^ ERROR: space prohibited before that ',' (ctx:WxW) #528: FILE: drivers/i2c/busses/i2c-nomadik.c:528: + i2c_set_bit(dev->virtbase + I2C_CR , I2C_CR_PE); ^ No functional changes. Signed-off-by: Tian Tao <tiantao6@hisilicon.com> Signed-off-by: Zihao Tang <tangzihao1@hisilicon.com> Signed-off-by: Wolfram Sang <wsa@kernel.org>
| * i2c: iop3xx: Fix coding style issuesTian Tao2021-04-151-13/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix 20 checkpatch errors. Among these errors, 18 of them are incorrect space usage, such as: ERROR: space prohibited after that open parenthesis '(' #128: FILE: drivers/i2c/busses/i2c-iop3xx.c:128: + if ( !rc ) rc = -I2C_ERR_BERR The remaining two errors are trailing statements should be on next line, such as: ERROR: trailing statements should be on next line #128: FILE: drivers/i2c/busses/i2c-iop3xx.c:128: + if ( !rc ) rc = -I2C_ERR_BERR; No functional changes. Signed-off-by: Tian Tao <tiantao6@hisilicon.com> Signed-off-by: Zihao Tang <tangzihao1@hisilicon.com> Signed-off-by: Wolfram Sang <wsa@kernel.org>
| * i2c: amd8111: Fix coding style issuesTian Tao2021-04-151-134/+134
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix the following checkpatch errors: ERROR: "foo * bar" should be "foo *bar" #189: FILE: drivers/i2c/busses/i2c-amd8111.c:189: ERROR: "foo * bar" should be "foo *bar" #191: FILE: drivers/i2c/busses/i2c-amd8111.c:191: ERROR: switch and case should be at the same indent #201: FILE: drivers/i2c/busses/i2c-amd8111.c:201: ERROR: switch and case should be at the same indent #359: FILE: drivers/i2c/busses/i2c-amd8111.c:359: No functional changes. Signed-off-by: Tian Tao <tiantao6@hisilicon.com> Signed-off-by: Zihao Tang <tangzihao1@hisilicon.com> Signed-off-by: Wolfram Sang <wsa@kernel.org>
| * i2c: mpc: Drop duplicate message from devm_platform_ioremap_resource()Andy Shevchenko2021-04-151-3/+1
| | | | | | | | | | | | | | | | | | | | devm_platform_ioremap_resource() prints a message in case of error. Drop custom one. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Chris Packham <chris.packham@alliedtelesis.co.nz> Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz> Signed-off-by: Wolfram Sang <wsa@kernel.org>
| * i2c: mpc: Use device_get_match_data() helperAndy Shevchenko2021-04-151-8/+4
| | | | | | | | | | | | | | | | | | Use the device_get_match_data() helper instead of open coding. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Chris Packham <chris.packham@alliedtelesis.co.nz> Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz> Signed-off-by: Wolfram Sang <wsa@kernel.org>
| * i2c: mpc: Remove CONFIG_PM_SLEEP ifdefferyAndy Shevchenko2021-04-151-11/+3
| | | | | | | | | | | | | | | | | | | | Use __maybe_unused for the suspend()/resume() hooks and get rid of the CONFIG_PM_SLEEP ifdeffery to improve the code. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Chris Packham <chris.packham@alliedtelesis.co.nz> Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz> Signed-off-by: Wolfram Sang <wsa@kernel.org>
| * i2c: mpc: Use devm_clk_get_optional()Andy Shevchenko2021-04-151-13/+12
| | | | | | | | | | | | | | | | | | | | | | The peripheral clock is optional and we may get an -EPROBE_DEFER error code which would not be propagated correctly, fix this by using devm_clk_get_optional(). Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Chris Packham <chris.packham@alliedtelesis.co.nz> Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz> Signed-off-by: Wolfram Sang <wsa@kernel.org>
| * i2c: mpc: Update license and copyrightChris Packham2021-04-151-8/+3
| | | | | | | | | | | | | | | | Use SPDX-License-Identifier and add copyright for Allied Telesis because of the reasonably large rewrite in the preceding patch. Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz> Signed-off-by: Wolfram Sang <wsa@kernel.org>
| * i2c: mpc: Interrupt driven transferChris Packham2021-04-151-187/+239
| | | | | | | | | | | | | | | | | | | | | | The fsl-i2c controller will generate an interrupt after every byte transferred. Make use of this interrupt to drive a state machine which allows the next part of a transfer to happen as soon as the interrupt is received. This is particularly helpful with SMBUS devices like the LM81 which will timeout if we take too long between bytes in a transfer. Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz> Signed-off-by: Wolfram Sang <wsa@kernel.org>
| * i2c: sh7760: add IRQ checkSergey Shtylyov2021-04-141-1/+4
| | | | | | | | | | | | | | | | | | | | | | | | The driver neglects to check the result of platform_get_irq()'s call and blithely passes the negative error codes to devm_request_irq() (which takes *unsigned* IRQ #), causing it to fail with -EINVAL, overriding an original error code. Stop calling devm_request_irq() with invalid IRQ #s. Fixes: a26c20b1fa6d ("i2c: Renesas SH7760 I2C master driver") Signed-off-by: Sergey Shtylyov <s.shtylyov@omprussia.ru> Signed-off-by: Wolfram Sang <wsa@kernel.org>
| * i2c: rcar: add IRQ checkSergey Shtylyov2021-04-141-1/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | The driver neglects to check the result of platform_get_irq()'s call and blithely passes the negative error codes to devm_request_irq() (which takes *unsigned* IRQ #), causing it to fail with -EINVAL, overriding an original error code. Stop calling devm_request_irq() with the invalid IRQ #s. Fixes: 6ccbe607132b ("i2c: add Renesas R-Car I2C driver") Signed-off-by: Sergey Shtylyov <s.shtylyov@omprussia.ru> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Wolfram Sang <wsa@kernel.org>
| * i2c: mlxbf: add IRQ checkSergey Shtylyov2021-04-141-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | The driver neglects to check the result of platform_get_irq()'s call and blithely passes the negative error codes to devm_request_irq() (which takes *unsigned* IRQ #), causing it to fail with -EINVAL, overriding an original error code. Stop calling devm_request_irq() with invalid IRQ #s. Fixes: b5b5b32081cd ("i2c: mlxbf: I2C SMBus driver for Mellanox BlueField SoC") Signed-off-by: Sergey Shtylyov <s.shtylyov@omprussia.ru> Signed-off-by: Wolfram Sang <wsa@kernel.org>
| * i2c: jz4780: add IRQ checkSergey Shtylyov2021-04-141-1/+4
| | | | | | | | | | | | | | | | | | | | | | | | The driver neglects to check the result of platform_get_irq()'s call and blithely passes the negative error codes to devm_request_irq() (which takes *unsigned* IRQ #), causing it to fail with -EINVAL, overriding an original error code. Stop calling devm_request_irq() with invalid IRQ #s. Fixes: ba92222ed63a ("i2c: jz4780: Add i2c bus controller driver for Ingenic JZ4780") Signed-off-by: Sergey Shtylyov <s.shtylyov@omprussia.ru> Signed-off-by: Wolfram Sang <wsa@kernel.org>
| * i2c: emev2: add IRQ checkSergey Shtylyov2021-04-141-1/+4
| | | | | | | | | | | | | | | | | | | | | | | | The driver neglects to check the result of platform_get_irq()'s call and blithely passes the negative error codes to devm_request_irq() (which takes *unsigned* IRQ #), causing it to fail with -EINVAL, overriding an original error code. Stop calling devm_request_irq() with invalid IRQ #s. Fixes: 5faf6e1f58b4 ("i2c: emev2: add driver") Signed-off-by: Sergey Shtylyov <s.shtylyov@omprussia.ru> Signed-off-by: Wolfram Sang <wsa@kernel.org>
| * i2c: cadence: add IRQ checkSergey Shtylyov2021-04-141-1/+4
| | | | | | | | | | | | | | | | | | | | | | | | The driver neglects to check the result of platform_get_irq()'s call and blithely passes the negative error codes to devm_request_irq() (which takes *unsigned* IRQ #), causing it to fail with -EINVAL, overriding an original error code. Stop calling devm_request_irq() with invalid IRQ #s. Fixes: df8eb5691c48 ("i2c: Add driver for Cadence I2C controller") Signed-off-by: Sergey Shtylyov <s.shtylyov@omprussia.ru> Signed-off-by: Wolfram Sang <wsa@kernel.org>
| * i2c: imx: Fix PM reference leak in i2c_imx_reg_slave()Ye Weihua2021-04-141-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | pm_runtime_get_sync() will increment the PM reference count even on failure. Forgetting to put the reference again will result in a leak. Replace it with pm_runtime_resume_and_get() to keep the usage counter balanced. Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Ye Weihua <yeweihua4@huawei.com> Signed-off-by: Wolfram Sang <wsa@kernel.org>
generated by cgit v1.2.3 (git 2.25.1) at 2025-03-19 14:54:07 +0000