linux-toradex.git/drivers/nvmem, branch v5.0-rc3

nvmem: add new config option

2018-12-06T14:45:46+00:00

We want to add nvmem support for MTD. TI DaVinci is the first platform
that will be using it, but only in non-DT mode. In order not to
introduce any new interface to supporting of which we would have to
commit - add a new config option that tells nvmem not to use the DT
node of the parent device.

This way we won't be creating nvmem devices corresponding with MTD
partitions defined in device tree. By default MTD will set this new
field to true.

Once a set of bindings for MTD nvmem cells is agreed upon, we'll be
able to remove this option.

Signed-off-by: Bartosz Golaszewski 
Signed-off-by: Srinivas Kandagatla 
Signed-off-by: Greg Kroah-Hartman

nvmem: Move nvmem_type_str array to its only user

2018-12-06T14:45:46+00:00

Since we put static variable to a header file it's copied to each module
that includes the header. But not all of them are actually using it.

Move nvmem_type_str array to its only user to make a compiler happy:

In file included from include/linux/rtc.h:18,
                 from drivers/rtc/rtc-proc.c:15:
include/linux/nvmem-provider.h:29:27: warning: 'nvmem_type_str'
defined but not used [-Wunused-const-variable=]
 static const char * const nvmem_type_str[] = {
                           ^~~~~~~~~~~~~~

Suggested-by: Alexandre Belloni 
Suggested-by: Joe Perches 
Cc: Srinivas Kandagatla 
Signed-off-by: Andy Shevchenko 
Signed-off-by: Srinivas Kandagatla 
Signed-off-by: Greg Kroah-Hartman

nvmem: meson-efuse: add peripheral clock

2018-12-06T14:45:46+00:00

Get and enable the peripheral clock required by the efuse device.
The driver has been handle to work without it so far because the
clock was left enabled by default but it won't be the case soon.

Signed-off-by: Jerome Brunet 
Signed-off-by: Srinivas Kandagatla 
Signed-off-by: Greg Kroah-Hartman

nvmem: meson-efuse: add error message on user_max failure.

2018-12-06T14:45:45+00:00

Add an explicit error message when SM_EFUSE_USER_MAX command fails

Signed-off-by: Jerome Brunet 
Signed-off-by: Srinivas Kandagatla 
Signed-off-by: Greg Kroah-Hartman

nvmem: add type attribute

2018-12-06T14:45:45+00:00

Add a type attribute so userspace is able to know how the data is stored as
this can help taking the correct decision when selecting which device to
use. This will also help program display the proper warnings when burning
fuses for example.

Signed-off-by: Alexandre Belloni 
Signed-off-by: Srinivas Kandagatla 
Signed-off-by: Greg Kroah-Hartman

nvmem: core: fix regression in of_nvmem_cell_get()

2018-11-11T17:15:29+00:00

NVMEM DT support seems to be totally broken after
commit e888d445ac33 ("nvmem: resolve cells from DT at registration time")
Fix this!

Index used in of_nvmem_cell_get() to find cell is specific to
consumer, It can not be used for searching the cell in provider.
Use device_node instead of this to find the matching cell in device
tree case.

Fixes: e888d445ac33 ("nvmem: resolve cells from DT at registration time")
Reported-by: Niklas Cassel 
Signed-off-by: Srinivas Kandagatla 
Tested-by: Niklas Cassel 
Signed-off-by: Greg Kroah-Hartman

nvmem: hide unused nvmem_find_cell_by_index function

2018-10-15T13:56:15+00:00

nvmem_find_cell_by_index() is only called from inside an #ifdef,
so we get a build warning without CONFIG_OF:

drivers/nvmem/core.c:496:1: error: 'nvmem_find_cell_by_index' defined but not used [-Werror=unused-function]

Move it into the same #ifdef as the caller to avoid the warning.

Fixes: e888d445ac33 ("nvmem: resolve cells from DT at registration time")
Signed-off-by: Arnd Bergmann 
Acked-by: Srinivas Kandagatla 
Signed-off-by: Greg Kroah-Hartman

nvmem: lpc18xx_eeprom: remove unused variable

2018-10-15T13:56:15+00:00

Remove a variable that's no longer used from lpc18xx_eeprom_remove().

Signed-off-by: Bartosz Golaszewski 
Reported-by: Stephen Rothwell 
Acked-by: Srinivas Kandagatla 
Signed-off-by: Greg Kroah-Hartman

nvmem: fix nvmem_cell_get_from_lookup()

2018-10-15T13:56:15+00:00

We check if the pointer returned by __nvmem_device_get() is not NULL
while we should actually check if it is not IS_ERR(nvmem). Fix it.

While we're at it: fix the next error path where we should assign an
error value to cell before returning.

Signed-off-by: Bartosz Golaszewski 
Reported-by: Stephen Rothwell 
Acked-by: Srinivas Kandagatla 
Signed-off-by: Greg Kroah-Hartman

nvmem: Convert to using %pOFn instead of device_node.name

2018-10-15T13:56:14+00:00

In preparation to remove the node name pointer from struct device_node,
convert printf users to use the %pOFn format specifier.

Cc: Srinivas Kandagatla 
Signed-off-by: Rob Herring 
[srinivas: rebased on top of next]
Signed-off-by: Srinivas Kandagatla 
Signed-off-by: Greg Kroah-Hartman