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* 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>
| * i2c: xiic: fix reference leak when pm_runtime_get_sync failsQinglang Miao2021-04-141-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The PM reference count is not expected to be incremented on return in xiic_xfer and xiic_i2c_remove. However, pm_runtime_get_sync will increment the PM reference count even failed. Forgetting to putting operation will result in a reference leak here. Replace it with pm_runtime_resume_and_get to keep usage counter balanced. Fixes: 10b17004a74c ("i2c: xiic: Fix the clocking across bind unbind") Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Qinglang Miao <miaoqinglang@huawei.com> Signed-off-by: Wolfram Sang <wsa@kernel.org>
| * i2c: stm32f7: fix reference leak when pm_runtime_get_sync failsQinglang Miao2021-04-141-6/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The PM reference count is not expected to be incremented on return in these stm32f7_i2c_xx serious functions. However, pm_runtime_get_sync will increment the PM reference count even failed. Forgetting to putting operation will result in a reference leak here. Replace it with pm_runtime_resume_and_get to keep usage counter balanced. Fixes: ea6dd25deeb5 ("i2c: stm32f7: add PM_SLEEP suspend/resume support") Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Qinglang Miao <miaoqinglang@huawei.com> Signed-off-by: Wolfram Sang <wsa@kernel.org>
| * i2c: sprd: fix reference leak when pm_runtime_get_sync failsQinglang Miao2021-04-141-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The PM reference count is not expected to be incremented on return in sprd_i2c_master_xfer() and sprd_i2c_remove(). However, pm_runtime_get_sync will increment the PM reference count even failed. Forgetting to putting operation will result in a reference leak here. Replace it with pm_runtime_resume_and_get to keep usage counter balanced. Fixes: 8b9ec0719834 ("i2c: Add Spreadtrum I2C controller driver") Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Qinglang Miao <miaoqinglang@huawei.com> Signed-off-by: Wolfram Sang <wsa@kernel.org>
| * i2c: omap: fix reference leak when pm_runtime_get_sync failsQinglang Miao2021-04-141-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The PM reference count is not expected to be incremented on return in omap_i2c_probe() and omap_i2c_remove(). However, pm_runtime_get_sync will increment the PM reference count even failed. Forgetting to putting operation will result in a reference leak here. I Replace it with pm_runtime_resume_and_get to keep usage counter balanced. What's more, error path 'err_free_mem' seems not like a proper name any more. So I change the name to err_disable_pm and move pm_runtime_disable below, for pm_runtime of 'pdev->dev' should be disabled when pm_runtime_resume_and_get fails. Fixes: 3b0fb97c8dc4 ("I2C: OMAP: Handle error check for pm runtime") Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Qinglang Miao <miaoqinglang@huawei.com> Reviewed-by: Grygorii Strashko <grygorii.strashko@ti.com> Reviewed-by: Vignesh Raghavendra <vigneshr@ti.com> Signed-off-by: Wolfram Sang <wsa@kernel.org>
| * i2c: imx: fix reference leak when pm_runtime_get_sync failsQinglang Miao2021-04-141-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In i2c_imx_xfer() and i2c_imx_remove(), the pm reference count is not expected to be incremented on return. However, pm_runtime_get_sync will increment pm reference count even failed. Forgetting to putting operation will result in a reference leak here. Replace it with pm_runtime_resume_and_get to keep usage counter balanced. Fixes: 3a5ee18d2a32 ("i2c: imx: implement master_xfer_atomic callback") Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Qinglang Miao <miaoqinglang@huawei.com> Reviewed-by: Oleksij Rempel <o.rempel@pengutronix.de> Signed-off-by: Wolfram Sang <wsa@kernel.org>
| * i2c: imx-lpi2c: fix reference leak when pm_runtime_get_sync failsQinglang Miao2021-04-141-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The PM reference count is not expected to be incremented on return in lpi2c_imx_master_enable. However, pm_runtime_get_sync will increment the PM reference count even failed. Forgetting to putting operation will result in a reference leak here. Replace it with pm_runtime_resume_and_get to keep usage counter balanced. Fixes: 13d6eb20fc79 ("i2c: imx-lpi2c: add runtime pm support") Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Qinglang Miao <miaoqinglang@huawei.com> Signed-off-by: Wolfram Sang <wsa@kernel.org>
| * i2c: img-scb: fix reference leak when pm_runtime_get_sync failsQinglang Miao2021-04-141-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The PM reference count is not expected to be incremented on return in functions img_i2c_xfer and img_i2c_init. However, pm_runtime_get_sync will increment the PM reference count even failed. Forgetting to putting operation will result in a reference leak here. Replace it with pm_runtime_resume_and_get to keep usage counter balanced. Fixes: 93222bd9b966 ("i2c: img-scb: Add runtime PM") Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Qinglang Miao <miaoqinglang@huawei.com> Signed-off-by: Wolfram Sang <wsa@kernel.org>
| * i2c: cadence: fix reference leak when pm_runtime_get_sync failsQinglang Miao2021-04-141-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The PM reference count is not expected to be incremented on return in functions cdns_i2c_master_xfer and cdns_reg_slave. However, pm_runtime_get_sync will increment pm usage counter even failed. Forgetting to putting operation will result in a reference leak here. Replace it with pm_runtime_resume_and_get to keep usage counter balanced. Fixes: 7fa32329ca03 ("i2c: cadence: Move to sensible power management") Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Qinglang Miao <miaoqinglang@huawei.com> Signed-off-by: Wolfram Sang <wsa@kernel.org>
| * i2c: sprd: Add missing MODULE_DEVICE_TABLEBixuan Cui2021-04-131-0/+1
| | | | | | | | | | | | | | | | | | | | | | This patch adds missing MODULE_DEVICE_TABLE definition which generates correct modalias for automatic loading of this driver when it is built as an external module. Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Bixuan Cui <cuibixuan@huawei.com> Reviewed-by: Baolin Wang <baolin.wang7@gmail.com> Signed-off-by: Wolfram Sang <wsa@kernel.org>
| * i2c: mpc: Remove redundant NULL checkChris Packham2021-04-131-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | In mpc_i2c_get_fdr_8xxx div is assigned as we iterate through the mpc_i2c_dividers_8xxx array. By the time we exit the loop div will either have the value that matches the requested speed or be pointing at the last entry in mpc_i2c_dividers_8xxx. Checking for div being NULL after the loop is redundant so remove the check. Reported-by: Wolfram Sang <wsa@kernel.org> Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz> Signed-off-by: Wolfram Sang <wsa@kernel.org>
| * i2c: mpc: drop release for resource allocated with devm_*Wei Yongjun2021-04-131-6/+0
| | | | | | | | | | | | | | | | | | | | | | | | It's not necessary to release resource which allocated with devm_* and those release may leads to a double free. And also remove useless irq_dispose_mapping() call since mapping not created. Fixes: 09aab7add7bf ("i2c: mpc: use device managed APIs") Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> Reviewed-by: Chris Packham <chris.packham@alliedtelesis.co.nz> Signed-off-by: Wolfram Sang <wsa@kernel.org>
| * i2c: mpc: use device managed APIsChris Packham2021-04-101-28/+18
| | | | | | | | | | | | | | Use device managed functions an clean up error handling. Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz> Signed-off-by: Wolfram Sang <wsa@kernel.org>
| * i2c: mpc: make interrupt mandatory and remove polling codeChris Packham2021-04-101-32/+19
| | | | | | | | | | | | | | | | | | All the in-tree dts files that use one of the compatible strings from i2c-mpc.c provide an interrupt property. By making this mandatory we can simplify the code. Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz> Signed-off-by: Wolfram Sang <wsa@kernel.org>
| * i2c: mpc: Make use of i2c_recover_bus()Chris Packham2021-04-101-2/+16
| | | | | | | | | | | | | | | | | | | | Move the existing calls of mpc_i2c_fixup() to a recovery function registered via bus_recovery_info. This makes it more obvious that recovery is supported and allows for a future where recovery is triggered by the i2c core. Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz> Signed-off-by: Wolfram Sang <wsa@kernel.org>
| * i2c: ensure timely release of driver-allocated resourcesDmitry Torokhov2021-04-101-1/+20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | More and more drivers rely on devres to manage their resources, however if bus' probe() and release() methods are not trivial and control some of resources as well (for example enable or disable clocks, or attach device to a power domain), we need to make sure that driver-allocated resources are released immediately after driver's remove() method returns, and not postponed until driver core gets around to releasing resources. To fix that we open a new devres group before calling driver's probe() and explicitly release it when we return from driver's remove(). Tested-by: Jeff LaBundy <jeff@labundy.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by: Wolfram Sang <wsa@kernel.org>
| * i2c: designware: Switch over to i2c_freq_mode_string()Andy Shevchenko2021-04-101-16/+4
| | | | | | | | | | | | | | | | | | Use generic i2c_freq_mode_string() helper to print chosen bus speed. Acked-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Yicong Yang <yangyicong@hisilicon.com> Signed-off-by: Wolfram Sang <wsa@kernel.org>
| * i2c: add support for HiSilicon I2C controllerYicong Yang2021-04-103-0/+515
| | | | | | | | | | | | | | | | | | | | | | | | | | Add HiSilicon I2C controller driver for the Kunpeng SoC. It provides the access to the i2c busses, which connects to the eeprom, rtc, etc. The driver works with IRQ mode, and supports basic I2C features and 10bit address. The DMA is not supported. Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Dmitry Osipenko <digetx@gmail.com> Signed-off-by: Yicong Yang <yangyicong@hisilicon.com> Signed-off-by: Wolfram Sang <wsa@kernel.org>
| * i2c: core: add api to provide frequency mode stringsYicong Yang2021-04-101-0/+21
| | | | | | | | | | | | | | | | | | | | | | | | Some I2C drivers like Designware and HiSilicon will print the bus frequency mode information, so add a public one that everyone can make use of. Tested-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Reviewed-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Yicong Yang <yangyicong@hisilicon.com> Signed-off-by: Wolfram Sang <wsa@kernel.org>
| * i2c: core: add managed function for adding i2c adaptersYicong Yang2021-04-101-0/+26
| | | | | | | | | | | | | | | | | | | | | | | | | | Some I2C controller drivers will only unregister the I2C adapter in their .remove() callback, which can be done by simply using a managed variant to add the I2C adapter. So add the managed functions for adding the I2C adapter. Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Dmitry Osipenko <digetx@gmail.com> Signed-off-by: Yicong Yang <yangyicong@hisilicon.com> Signed-off-by: Wolfram Sang <wsa@kernel.org>
| * Merge branch 'i2c/software-nodes' into i2c/for-5.13Wolfram Sang2021-04-105-43/+26
| |\
| | * i2c: Remove support for dangling device propertiesHeikki Krogerus2021-04-102-25/+1
| | | | | | | | | | | | | | | | | | | | | From now on only accepting complete software nodes. Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> Signed-off-by: Wolfram Sang <wsa@kernel.org>
| | * i2c: icy: Constify the software nodeHeikki Krogerus2021-04-101-23/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | Complete software node can now be supplied to the device with struct i2c_board_info. Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> Reviewed-by: Max Staudt <max@enpas.org> Signed-off-by: Wolfram Sang <wsa@kernel.org>
| | * i2c: nvidia-gpu: Constify the software nodeHeikki Krogerus2021-04-101-1/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | Additional device properties are always just a part of a software fwnode. If the device properties are constant, the software node can also be constant. Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> Signed-off-by: Wolfram Sang <wsa@kernel.org>
| | * i2c: cht-wc: Constify the software nodeHeikki Krogerus2021-04-101-1/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Additional device properties are always just a part of a software fwnode. If the device properties are constant, the software node can also be constant. Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> Reviewed-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Wolfram Sang <wsa@kernel.org>
| | * i2c: Add support for software nodesHeikki Krogerus2021-04-081-1/+14
| | | | | | | | | | | | | | | | | | | | | | | | | | | This makes it possible for the drivers to assign complete software fwnodes to the devices instead of only the device properties in those nodes. Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> Signed-off-by: Wolfram Sang <wsa@kernel.org>
| * | i2c: remove unused 'version.h' include in driversTian Tao2021-04-082-2/+0
| | | | | | | | | | | | | | | | | | | | | Signed-off-by: Tian Tao <tiantao6@hisilicon.com> Signed-off-by: Zhiqi Song <songzhiqi1@huawei.com> Acked-by: Florian Fainelli <f.fainelli@gmail.com> # for brcmstb Signed-off-by: Wolfram Sang <wsa@kernel.org>
generated by cgit v1.2.3 (git 2.39.1) at 2025-01-27 05:20:40 +0100