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2021-05-27eeprom: ee1004: Improve error handling in ee1004_readHeiner Kallweit1-18/+13
Simplify the error handling and make it better readable. No functional change intended. Signed-off-by: Heiner Kallweit <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2021-05-27eeprom: ee1004: Factor out setting page to ee1004_set_current_pageHeiner Kallweit1-22/+30
Factor out setting the page, this makes the code better readable. Signed-off-by: Heiner Kallweit <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2021-05-27eeprom: ee1004: Cache current page at initialization of first device onlyHeiner Kallweit1-8/+7
The value of ee1004_current_page applies to all SPD eeproms connected to the adapter. Therefore it's sufficient if we set ee1004_current_page when the first device is added. Signed-off-by: Heiner Kallweit <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2021-05-27eeprom: ee1004: Switch to i2c probe_new callbackHeiner Kallweit1-3/+2
Switch to the new i2c_driver probe callback version. Signed-off-by: Heiner Kallweit <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2021-05-27eeprom: ee1004: Improve creating dummy devicesHeiner Kallweit1-7/+6
i2c_new_dummy_device() calls i2c_new_client_device() that complains if it fails to create the device. Therefore we don't have to emit an error message in case of failure. In addition ensure that ee1004_set_page is only set if creating the device succeeded. Signed-off-by: Heiner Kallweit <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2021-05-27eeprom: ee1004: Improve check for SMBUS featuresHeiner Kallweit1-18/+4
We have to read 512 bytes only, therefore read performance isn't really a concern. Don't bother the user if i2c block read isn't supported. For i2c_smbus_read_i2c_block_data_or_emulated() to work it's sufficient if I2C_FUNC_SMBUS_READ_I2C_BLOCK or I2C_FUNC_SMBUS_READ_BYTE_DATA is supported. Therefore remove the check for I2C_FUNC_SMBUS_READ_WORD_DATA. In addition check for I2C_FUNC_SMBUS_WRITE_BYTE (included in I2C_FUNC_SMBUS_BYTE) which is needed for setting the page. Signed-off-by: Heiner Kallweit <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2021-05-27eeprom: ee1004: Remove usage of i2c_adapter_id in adapter comparisonHeiner Kallweit1-2/+1
We can compare the adapter pointers directly instead of using i2c_adapter_id(). Signed-off-by: Heiner Kallweit <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2021-05-27eeprom: ee1004: Remove not needed check in ee1004_eeprom_readHeiner Kallweit1-3/+1
i2c_smbus_read_i2c_block_data_or_emulated() checks its length argument, so we don't have to do it. In addition remove the unlikely hint from the checks, we do i2c reads and therefore are in a slow path. Signed-off-by: Heiner Kallweit <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2021-05-27eeprom: ee1004: Remove not needed check in ee1004_readHeiner Kallweit1-3/+0
sysfs_kf_bin_read() checks this for us already. In addition the function works correctly also w/o this check. Signed-off-by: Heiner Kallweit <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2021-05-27eeprom: ee1004: Use kobj_to_i2c_client to simplify the codeHeiner Kallweit1-2/+1
Switch to helper kobj_to_i2c_client() to simplify the code. Signed-off-by: Heiner Kallweit <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2021-05-21eeprom: ee1004: Let device core handle attribute eepromHeiner Kallweit1-17/+9
Instead of creating/removing the attribute ourselves, just declare the attribute and let the device core handle it. This allows to simplify the code. Signed-off-by: Heiner Kallweit <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2021-05-21Merge 50f09a3dd587 ("Merge tag 'char-misc-5.13-rc3' of ↵Greg Kroah-Hartman1-2/+4
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc") into char-misc-next We want the char/misc driver fixes in here as well Signed-off-by: Greg Kroah-Hartman <[email protected]>
2021-05-14misc: eeprom: at24: check suspend status before disable regulatorHsin-Yi Wang1-2/+4
cd5676db0574 ("misc: eeprom: at24: support pm_runtime control") disables regulator in runtime suspend. If runtime suspend is called before regulator disable, it will results in regulator unbalanced disabling. Fixes: cd5676db0574 ("misc: eeprom: at24: support pm_runtime control") Cc: stable <[email protected]> Acked-by: Bartosz Golaszewski <[email protected]> Signed-off-by: Hsin-Yi Wang <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2021-05-14misc: eeprom_93xx46: Add new 93c56 and 93c66 compatible stringsEmmanuel Gil Peyrot1-3/+32
These two devices have respectively 2048 and 4096 bits of storage, compared to 1024 for the 93c46. Reviewed-by: Jonathan Neuschäfer <[email protected]> Signed-off-by: Emmanuel Gil Peyrot <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2021-05-14misc: eeprom_93xx46: Remove hardcoded bit lengthsEmmanuel Gil Peyrot1-25/+32
This avoids using magic numbers based on the length of an address or a command, while we only want to differentiate between 8-bit and 16-bit. The driver was previously wrapping around the offset in the write operation, this now returns -EINVAL instead (but should never happen in the first place). If two pointer indirections are too many, we could move the flags to the main struct instead, but I doubt it’s going to make any sensible difference on any hardware. Reviewed-by: Jonathan Neuschäfer <[email protected]> Signed-off-by: Emmanuel Gil Peyrot <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2021-01-20misc: eeprom_93xx46: Add quirk to support Microchip 93LC46B eepromAswath Govindraju1-0/+15
A dummy zero bit is sent preceding the data during a read transfer by the Microchip 93LC46B eeprom (section 2.7 of[1]). This results in right shift of data during a read. In order to ignore this bit a quirk can be added to send an extra zero bit after the read address. Add a quirk to ignore the zero bit sent before data by adding a zero bit after the read address. [1] - https://www.mouser.com/datasheet/2/268/20001749K-277859.pdf Signed-off-by: Aswath Govindraju <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2021-01-13misc: eeprom_93xx46: Add module alias to avoid breaking support for non ↵Aswath Govindraju1-0/+1
device tree users Module alias "spi:93xx46" is used by non device tree users like drivers/misc/eeprom/digsy_mtc_eeprom.c and removing it will break support for them. Fix this by adding back the module alias "spi:93xx46". Fixes: 13613a2246bf ("misc: eeprom_93xx46: Fix module alias to enable module autoprobe") Signed-off-by: Aswath Govindraju <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2021-01-07misc: eeprom_93xx46: Enable module autoprobe for microchip 93LC46B eepromAswath Govindraju1-0/+1
Add module alias to enable autoprobe for microchip 93LC46B eeprom by using /sys/class/.../spi1.0/modalias content. Signed-off-by: Aswath Govindraju <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2021-01-07misc: eeprom_93xx46: Fix module alias to enable module autoprobeAswath Govindraju1-1/+1
Fix module autoprobe by correcting module alias to match the string from /sys/class/.../spi1.0/modalias content. Fixes: 06b4501e88ad ("misc/eeprom: add driver for microwire 93xx46 EEPROMs") Signed-off-by: Aswath Govindraju <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2020-12-15Merge tag 'char-misc-5.11-rc1' of ↵Linus Torvalds1-0/+3
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc Pull char / misc driver updates from Greg KH: "Here is the big char/misc driver update for 5.11-rc1. Continuing the tradition of previous -rc1 pulls, there seems to be more and more tiny driver subsystems flowing through this tree. Lots of different things, all of which have been in linux-next for a while with no reported issues: - extcon driver updates - habannalab driver updates - mei driver updates - uio driver updates - binder fixes and features added - soundwire driver updates - mhi bus driver updates - phy driver updates - coresight driver updates - fpga driver updates - speakup driver updates - slimbus driver updates - various small char and misc driver updates" * tag 'char-misc-5.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (305 commits) extcon: max77693: Fix modalias string extcon: fsa9480: Support TI TSU6111 variant extcon: fsa9480: Rewrite bindings in YAML and extend dt-bindings: extcon: add binding for TUSB320 extcon: Add driver for TI TUSB320 slimbus: qcom: fix potential NULL dereference in qcom_slim_prg_slew() siox: Make remove callback return void siox: Use bus_type functions for probe, remove and shutdown spmi: Add driver shutdown support spmi: fix some coding style issues at the spmi core spmi: get rid of a warning when built with W=1 uio: uio_hv_generic: use devm_kzalloc() for private data alloc uio: uio_fsl_elbc_gpcm: use device-managed allocators uio: uio_aec: use devm_kzalloc() for uio_info object uio: uio_cif: use devm_kzalloc() for uio_info object uio: uio_netx: use devm_kzalloc() for or uio_info object uio: uio_mf624: use devm_kzalloc() for uio_info object uio: uio_sercos3: use device-managed functions for simple allocs uio: uio_dmem_genirq: finalize conversion of probe to devm_ handlers uio: uio_dmem_genirq: convert simple allocations to device-managed ...
2020-12-04misc: eeprom: at24: fix NVMEM name with custom AT24 device nameDiego Santa Cruz1-1/+0
When the "label" property is set on the AT24 EEPROM the NVMEM devid is set to NVMEM_DEVID_NONE, but it is not effective since there is a leftover line setting it back to NVMEM_DEVID_AUTO a few lines after. Fixes: 61f764c307f6 ("eeprom: at24: Support custom device names for AT24 EEPROMs") Signed-off-by: Diego Santa Cruz <[email protected]> Signed-off-by: Bartosz Golaszewski <[email protected]>
2020-11-14eeprom: at25: Add example part numbersJonathan Neuschäfer1-0/+3
To save the interested reader some time, add examples of AT25 part numbers that correspond to EEPROMs rather than flashes. Signed-off-by: Jonathan Neuschäfer <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2020-10-21Merge branch 'i2c/for-5.10' of ↵Linus Torvalds2-8/+65
git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux Pull i2c updates from Wolfram Sang: - if a host can be a client, too, the I2C core can now use it to emulate SMBus HostNotify support (STM32 and R-Car added this so far) - also for client mode, a testunit has been added. It can create rare situations on the bus, so host controllers can be tested - a binding has been added to mark the bus as "single-master". This allows for better timeout detections - new driver for Mellanox Bluefield - massive refactoring of the Tegra driver - EEPROMs recognized by the at24 driver can now have custom names - rest is driver updates * 'i2c/for-5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: (80 commits) Documentation: i2c: add testunit docs to index i2c: tegra: Improve driver module description i2c: tegra: Clean up whitespaces, newlines and indentation i2c: tegra: Clean up and improve comments i2c: tegra: Clean up printk messages i2c: tegra: Clean up variable names i2c: tegra: Improve formatting of variables i2c: tegra: Check errors for both positive and negative values i2c: tegra: Factor out hardware initialization into separate function i2c: tegra: Factor out register polling into separate function i2c: tegra: Factor out packet header setup from tegra_i2c_xfer_msg() i2c: tegra: Factor out error recovery from tegra_i2c_xfer_msg() i2c: tegra: Rename wait/poll functions i2c: tegra: Remove "dma" variable from tegra_i2c_xfer_msg() i2c: tegra: Remove redundant check in tegra_i2c_issue_bus_clear() i2c: tegra: Remove likely/unlikely from the code i2c: tegra: Remove outdated barrier() i2c: tegra: Clean up variable types i2c: tegra: Reorder location of functions in the code i2c: tegra: Clean up probe function ...
2020-10-02eeprom: ee1004: use module_i2c_driver to simplify the codeLiu Shixin1-12/+1
Use the module_i2c_driver() macro to make the code smaller and a bit simpler. Signed-off-by: Liu Shixin <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2020-09-27Merge tag 'at24-updates-for-v5.10' of ↵Wolfram Sang1-7/+64
git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux into i2c/for-5.10 at24 updates for v5.10 - add support for masking sensitive data in VAIO EEPROMs - set the nvmem TYPE to NVMEM_TYPE_EEPROM - add support for the new 'label' property - set the nvmem ID to NVMEM_DEVID_AUTO by default (for backward compatibility) or to NVMEM_DEVID_NONE if label is defined
2020-09-25eeprom: at24: Support custom device names for AT24 EEPROMsJon Hunter1-1/+21
By using the label property, a more descriptive name can be populated for AT24 EEPROMs NVMEM device. Update the AT24 driver to check to see if the label property is present and if so, use this as the name for NVMEM device. Please note that when the 'label' property is present for the AT24 EEPROM, we do not want the NVMEM driver to append the 'devid' to the name and so the nvmem_config.id is initialised to NVMEM_DEVID_NONE. Signed-off-by: Jon Hunter <[email protected]> Signed-off-by: Bartosz Golaszewski <[email protected]>
2020-09-24eeprom: at24: Initialise AT24 NVMEM ID fieldJon Hunter1-0/+1
The AT24 EEPROM driver does not initialise the 'id' field of the nvmem_config structure and because the entire structure is not initialised, it ends up with a random value. This causes the NVMEM driver to append the device 'devid' value to name of the NVMEM device. Ideally for I2C devices such as the AT24 that already have a unique name, we would not bother to append the 'devid'. However, given that this has always been done for AT24 devices, we cannot remove the 'devid' as this will change the name of the userspace sysfs node for the NVMEM device. Nonetheless we should ensure that the 'id' field of the nvmem_config structure is initialised so that there is no chance of a random value causes problems in the future. Therefore, set the NVMEM config.id to NVMEM_DEVID_AUTO for AT24 EEPROMs so that the 'devid' is always appended. Signed-off-by: Jon Hunter <[email protected]> Signed-off-by: Bartosz Golaszewski <[email protected]>
2020-09-21misc: eeprom: use helper to get i2c_client from kobjWolfram Sang1-1/+1
Slightly easier to read. Signed-off-by: Wolfram Sang <[email protected]> Reviewed-by: Jean Delvare <[email protected]> Signed-off-by: Wolfram Sang <[email protected]>
2020-09-17eeprom: 93xx46: set type id as EEPROMVadym Kochan1-0/+1
Set type as NVMEM_TYPE_EEPROM to expose this info via sysfs: $ cat /sys/bus/nvmem/devices/{DEVICE}/type EEPROM Signed-off-by: Vadym Kochan <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2020-09-17eeprom: at25: set type id as EEPROMVadym Kochan1-0/+1
Set type as NVMEM_TYPE_EEPROM to expose this info via sysfs: $ cat /sys/bus/nvmem/devices/{DEVICE}/type EEPROM Signed-off-by: Vadym Kochan <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2020-09-17eeprom: at24: set type id as EEPROMVadym Kochan1-0/+1
Set type as NVMEM_TYPE_EEPROM to expose this info via sysfs: $ cat /sys/bus/nvmem/devices/{DEVICE}/type EEPROM Signed-off-by: Vadym Kochan <[email protected]> Signed-off-by: Bartosz Golaszewski <[email protected]>
2020-09-14Merge 5.9-rc5 into char-misc-nextGreg Kroah-Hartman1-4/+7
We want the char/misc fixes in here as well. Signed-off-by: Greg Kroah-Hartman <[email protected]>
2020-09-09Merge tag 'at24-fixes-for-v5.9-rc5' of ↵Wolfram Sang1-4/+7
git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux into i2c/for-current at24 fixes for v5.9-rc5 - delay registration of the nvmem provider until after power is enabled
2020-09-01misc: eeprom: at24: register nvmem only after eeprom is ready to useVadym Kochan1-4/+7
During nvmem_register() the nvmem core sends notifications when: - cell added - nvmem added and during these notifications some callback func may access the nvmem device, which will fail in case of at24 eeprom because regulator and pm are enabled after nvmem_register(). Fixes: cd5676db0574 ("misc: eeprom: at24: support pm_runtime control") Fixes: b20eb4c1f026 ("eeprom: at24: drop unnecessary label") Cc: [email protected] Signed-off-by: Vadym Kochan <[email protected]> Signed-off-by: Bartosz Golaszewski <[email protected]>
2020-08-31Merge 5.9-rc3 into char-misc-nextGreg Kroah-Hartman1-5/+5
We need the fixes in here as well. Signed-off-by: Greg Kroah-Hartman <[email protected]>
2020-08-28eeprom: at25: set minimum read/write access stride to 1Christian Eggers1-1/+1
SPI eeproms are addressed by byte. Signed-off-by: Christian Eggers <[email protected]> Cc: [email protected] Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2020-08-28eeprom: at25: allow page sizes greater than 16 bitChristian Eggers1-1/+1
Storage technologies like FRAM have no "write pages", the whole chip can be written within one SPI transfer. For these chips, the page size can be set equal to the device size. Currently available devices are already bigger than 64 kiB. Signed-off-by: Christian Eggers <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2020-08-25eeprom: at24: Tidy at24_read()Jean Delvare1-10/+4
The elegant code in at24_read() has the drawback that we now need to make a copy of all parameters to pass them to the post-processing callback function if there is one. Rewrite the loop in such a way that the parameters are not modified, so saving them is no longer needed. Signed-off-by: Jean Delvare <[email protected]> Cc: Bartosz Golaszewski <[email protected]> Cc: Arnd Bergmann <[email protected]> Cc: Greg Kroah-Hartman <[email protected]> Signed-off-by: Bartosz Golaszewski <[email protected]>
2020-08-23treewide: Use fallthrough pseudo-keywordGustavo A. R. Silva1-5/+5
Replace the existing /* fall through */ comments and its variants with the new pseudo-keyword macro fallthrough[1]. Also, remove unnecessary fall-through markings when it is the case. [1] https://www.kernel.org/doc/html/v5.7/process/deprecated.html?highlight=fallthrough#implicit-switch-case-fall-through Signed-off-by: Gustavo A. R. Silva <[email protected]>
2020-08-18eeprom: at24: Add support for the Sony VAIO EEPROMsJean Delvare1-0/+41
Special handling of the Sony VAIO EEPROMs is the last feature of the legacy eeprom driver that the at24 driver does not support. Adding this would let us deprecate and eventually remove the legacy eeprom driver. So add the option to specify a post-processing callback function that is called after reading data from the EEPROM, before it is returned to the user. The 24c02-vaio type is the first use case of that option: the callback function will mask the sensitive data for non-root users exactly as the legacy eeprom driver was doing. Signed-off-by: Jean Delvare <[email protected]> Cc: Bartosz Golaszewski <[email protected]> Cc: Arnd Bergmann <[email protected]> Cc: Greg Kroah-Hartman <[email protected]> [Bartosz: removed a stray newline] Signed-off-by: Bartosz Golaszewski <[email protected]>
2020-07-10misc: eeprom: at24: Tell the compiler that ACPI functions may not be usedLee Jones1-1/+1
... as is the case when !CONFIG_ACPI. Fixes the following W=1 kernel build warning: drivers/misc/eeprom/at24.c:228:36: warning: ‘at24_acpi_ids’ defined but not used [-Wunused-const-variable=] Signed-off-by: Lee Jones <[email protected]> Acked-by: Bartosz Golaszewski <[email protected]> Link: https://lore.kernel.org/r/20200701093616.GX1179328@dell Signed-off-by: Greg Kroah-Hartman <[email protected]>
2020-06-29misc: eeprom: eeprom_93cx6: Repair function arg descriptionsLee Jones1-2/+2
Copy-paste issue. Looks like the kerneldoc style descriptions for these functions were taken from existing functions with slightly different argument names. Fixes the following W=1 warnings: drivers/misc/eeprom/eeprom_93cx6.c:239: warning: Function parameter or member 'byte' not described in 'eeprom_93cx6_readb' drivers/misc/eeprom/eeprom_93cx6.c:239: warning: Excess function parameter 'word' description in 'eeprom_93cx6_readb' drivers/misc/eeprom/eeprom_93cx6.c:280: warning: Function parameter or member 'bytes' not described in 'eeprom_93cx6_multireadb' drivers/misc/eeprom/eeprom_93cx6.c:280: warning: Excess function parameter 'words' description in 'eeprom_93cx6_multireadb' Cc: Wolfram Sang <[email protected]> Acked-by: Arnd Bergmann <[email protected]> Signed-off-by: Lee Jones <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2020-03-26Merge tag 'v5.6-rc7' into i2c/for-5.7Wolfram Sang1-1/+2
Linux 5.6-rc7
2020-03-12misc: eeprom: at24: fix regulator underflowMichael Auchter1-1/+2
The at24 driver attempts to read a byte from the device to validate that it's actually present, and if not, disables the vcc regulator and returns -ENODEV. However, between the read and the error handling path, pm_runtime_idle() is called and invokes the driver's suspend callback, which also disables the vcc regulator. This leads to an underflow of the regulator enable count if the EEPROM is not present. Move the pm_runtime_suspend() call to be after the error handling path to resolve this. Fixes: cd5676db0574 ("misc: eeprom: at24: support pm_runtime control") Signed-off-by: Michael Auchter <[email protected]> Signed-off-by: Bartosz Golaszewski <[email protected]>
2020-02-10eeprom: at24: add TPF0001 ACPI ID for 24c1024 deviceMarkus Pietrek1-0/+1
This ID is used at leas on some variants of MSC C6B-SLH board. Signed-off-by: Markus Pietrek <[email protected]> Signed-off-by: Oleksij Rempel <[email protected]> Signed-off-by: Bartosz Golaszewski <[email protected]>
2020-01-23misc: eeprom: at24: support pm_runtime controlBibby Hsieh1-0/+39
Although in the most platforms, the power of eeprom are alway on, some platforms disable the eeprom power in order to meet low power request. This patch add the pm_runtime ops to control power to support all platforms. Signed-off-by: Bibby Hsieh <[email protected]> [Bartosz: rebased on top of current at24/for-next] Signed-off-by: Bartosz Golaszewski <[email protected]>
2020-01-09eeprom: at24: remove the write-protect pin supportKhouloud Touil1-9/+0
NVMEM framework is an interface for the at24 EEPROMs as well as for other drivers, instead of passing the wp-gpios over the different drivers each time, it would be better to pass it over the NVMEM subsystem once and for all. Removing the support for the write-protect pin after adding it to the NVMEM subsystem. Signed-off-by: Khouloud Touil <[email protected]> Reviewed-by: Linus Walleij <[email protected]> Signed-off-by: Bartosz Golaszewski <[email protected]>
2020-01-02eeprom: at24: sort headers alphabeticallyBartosz Golaszewski1-12/+12
For consistency and easier maintenance: sort the headers alphabetically. Signed-off-by: Bartosz Golaszewski <[email protected]>
2020-01-02eeprom: at24: update the license tagBartosz Golaszewski1-1/+1
The current GPL v2.0 or later SPDX tag is 'GPL-2.0-or-later' as defined at https://spdx.org/licenses/. Signed-off-by: Bartosz Golaszewski <[email protected]>
2019-12-01Merge branch 'i2c/for-5.5' of ↵Linus Torvalds1-3/+6
git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux Pull i2c updates from Wolfram Sang: "I2C has mostly driver updates this time. The few noteworthy changes are: the core has now support for analog and digital filters with at91 being the first user, a core addition to replace the NULL returning i2c_new_probed_device() with an ERR_PTR variant, and the pxa driver has finally being moved to use the generic I2C slave interface. We have quite a significant number of reviews per patch this time, so thank you to all involved!" * 'i2c/for-5.5' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: (37 commits) video: fbdev: matrox: convert to i2c_new_scanned_device i2c: icy: convert to i2c_new_scanned_device i2c: replace i2c_new_probed_device with an ERR_PTR variant i2c: Fix Kconfig indentation i2c: smbus: Don't filter out duplicate alerts i2c: i801: Correct Intel Jasper Lake SOC naming i2c: i2c-stm32f7: fix 10-bits check in slave free id search loop i2c: iproc: Add i2c repeated start capability i2c: remove helpers for ref-counting clients i2c: tegra: Use dma_request_chan() directly for channel request i2c: sh_mobile: Use dma_request_chan() directly for channel request i2c: qup: Use dma_request_chan() directly for channel request i2c: at91: Use dma_request_chan() directly for channel request i2c: rcar: Remove superfluous call to clk_get_rate() i2c: pxa: remove unused i2c-slave APIs i2c: pxa: migrate to new i2c_slave APIs i2c: cros-ec-tunnel: Make the device acpi compatible i2c: stm32f7: report dma error during probe i2c: icy: no need to populate address for scanned device i2c: xiic: Fix kerneldoc warnings ...
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