user/sven/linux.git/include/linux/nvmem-consumer.h, branch v5.3.2

nvmem: core: add nvmem_cell_read_u16

2019-04-25T17:43:12Z

Add nvmem_cell_read_u16() helper to ease read of an u16 value on consumer side. This is inspired by nvmem_cell_read_u32() function. This helper is useful on stm32 that has 16 bits data cells stored in non volatile memory. Signed-off-by: Fabrice Gasnier Signed-off-by: Srinivas Kandagatla Signed-off-by: Greg Kroah-Hartman

nvmem: use EOPNOTSUPP instead of ENOSYS

2018-09-28T13:14:55Z

Checkpatch emits warnings when using ENOSYS. Some of the frameworks started using EOPNOTSUPP as return values for API functions when given subsystem is disabled in Kconfig. Signed-off-by: Bartosz Golaszewski Signed-off-by: Srinivas Kandagatla Signed-off-by: Greg Kroah-Hartman

nvmem: make the naming of arguments in nvmem_cell_get() consistent

2018-09-28T13:14:55Z

The argument representing the cell name in the nvmem_cell_get() family of functions is not consistend between function prototypes and definitions. Name it 'id' in all those routines. This is in line with other frameworks and can represent both the DT cell name from the nvmem-cell-names property as well as the con_id field from cell lookup entries. Signed-off-by: Bartosz Golaszewski Signed-off-by: Srinivas Kandagatla Signed-off-by: Greg Kroah-Hartman

nvmem: use SPDX license identifiers

2018-09-28T13:14:54Z

Use SPDX license identiefiers to core nvmem files and remove GPL 2.0 license boilerplate. Signed-off-by: Bartosz Golaszewski Signed-off-by: Srinivas Kandagatla Signed-off-by: Greg Kroah-Hartman

nvmem: add a notifier chain

2018-09-28T13:14:54Z

Add a blocking notifier chain with four events (add and remove for both devices and cells) so that users can get notified about the addition of nvmem resources they're waiting for. We'll use this instead of the at24 setup callback in the mityomapl138 board file. Signed-off-by: Bartosz Golaszewski Signed-off-by: Srinivas Kandagatla Signed-off-by: Greg Kroah-Hartman

nvmem: add support for cell lookups from machine code

2018-09-28T13:14:54Z

Add a way for machine code users to associate devices with nvmem cells. This restores the support for non-DT systems but following a different approach. Cells must now be associated with devices using provided routines and data structures before they can be retrieved using nvmem_cell_get(). It's still possible to define cells statically in nvmem_config but cells created this way still need to be associated with consumers using lookup entries. Note that nvmem_find() must be moved higher in the source file as we want to call it from __nvmem_device_get() for devices that don't have a device node. The signature of __nvmem_device_get() is also changed as it's no longer used to retrieve cells. Signed-off-by: Bartosz Golaszewski Signed-off-by: Srinivas Kandagatla Signed-off-by: Greg Kroah-Hartman

nvmem: provide nvmem_dev_name()

2018-09-28T13:14:53Z

Kernel users don't have any means of checking the names of nvmem devices. Add a routine that returns the name of the nvmem provider. This will be useful for future nvmem notifier subscribers - otherwise they can't check what device is being added/removed. Signed-off-by: Bartosz Golaszewski Signed-off-by: Srinivas Kandagatla Signed-off-by: Greg Kroah-Hartman

nvmem: include linux/err.h from header

2017-08-28T15:33:23Z

missing err.h header file can cause simillar errors like below in some configurations. "error: implicit declaration of function 'ERR_PTR' [-Werror=implicit-function-declaration]" This adds the missing include to ensure we can always include the header. Signed-off-by: Srinivas Kandagatla Signed-off-by: Greg Kroah-Hartman

nvmem: core: Add nvmem_cell_read_u32

2017-08-28T15:33:23Z

This function does a quick and easy read of an u32 value without any kind of resource management code on the consumer side. Signed-off-by: Leonard Crestez Reviewed-by: Shawn Guo Signed-off-by: Srinivas Kandagatla Signed-off-by: Greg Kroah-Hartman

nvmem: Declare nvmem_cell_read() consistently

2016-06-25T14:42:55Z

nvmem_cell_read() is declared as void * if CONFIG_NVMEM is enabled, and as char * otherwise. This can result in a build warning if CONFIG_NVMEM is not enabled and a caller asigns the result to a type other than char * without using a typecast. Use a consistent declaration to avoid the problem. Fixes: e2a5402ec7c6 ("nvmem: Add nvmem_device based consumer apis.") Cc: Srinivas Kandagatla Signed-off-by: Guenter Roeck Signed-off-by: Srinivas Kandagatla Signed-off-by: Greg Kroah-Hartman