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path: root/drivers/nvmem/meson-efuse.c
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2018-05-14nvmem: meson-efuse: add write supportJerome Brunet1-1/+8
Add write support to the meson-gx efuse driver. Beware, this efuse is one time programmable ! Reviewed-by: Kevin Hilman <khilman@baylibre.com> Signed-off-by: Jerome Brunet <jbrunet@baylibre.com> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-05-14nvmem: meson-efuse: simplify read callbackJerome Brunet1-9/+2
Most of the code and variables in the read callback is not necessary. Keep only what is required. Signed-off-by: Jerome Brunet <jbrunet@baylibre.com> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-05-14nvmem: meson-efuse: remove econfig globalJerome Brunet1-11/+14
Having a global structure holding a reference to the device structure is not very nice. Allocate the econfig instead and fill the nvmem information as before Reviewed-by: Kevin Hilman <khilman@baylibre.com> Signed-off-by: Jerome Brunet <jbrunet@baylibre.com> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-03-14nvmem: meson-efuse: Convert to use devm_nvmem_register()Andrey Smirnov1-14/+2
Drop all of the code related to .remove hook and make use of devm_nvmem_register() instead. Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Cc: Heiko Stuebner <heiko@sntech.de> Cc: Masahiro Yamada <yamada.masahiro@socionext.com> Cc: Carlo Caione <carlo@caione.org> Cc: Kevin Hilman <khilman@baylibre.com> Cc: Matthias Brugger <matthias.bgg@gmail.com> Cc: cphealy@gmail.com Cc: linux-kernel@vger.kernel.org Cc: linux-mediatek@lists.infradead.org Cc: linux-rockchip@lists.infradead.org Cc: linux-amlogic@lists.infradead.org Cc: linux-arm-kernel@lists.infradead.org Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-11-08nvmem: set nvmem->owner to nvmem->dev->driver->owner if unsetMasahiro Yamada1-1/+0
All nvmem drivers are supposed to set the owner field of struct nvmem_config, but this matches nvmem->dev->driver->owner. As far as I see in drivers/nvmem/ directory, all the drivers are the case. So, make nvmem_register() set the nvmem's owner to the associated driver's owner unless nvmem_config sets otherwise. Remove .owner settings in the drivers that are now redundant. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-10-20nvmem: meson-efuse: indicate that this driver is only for Meson GX SoCsMartin Blumenstingl1-2/+2
The current Amlogic Meson eFuse driver only supports the 64-bit SoCs (GXBB and newer). Older SoCs cannot be supported by the same driver because they do not use the meson secure monitor firmware to access the hardware. Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-03-23firmware: meson-sm: Check for buffer output sizeCarlo Caione1-1/+1
After the data is read by the secure monitor driver it is being copied in the output buffer checking only the size of the bounce buffer but not the size of the output buffer. Fix this in the secure monitor driver slightly changing the API. Fix also the efuse driver that it is the only driver using this API to not break bisectability. Signed-off-by: Carlo Caione <carlo@endlessm.com> Acked-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> # for nvmem Acked-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Kevin Hilman <khilman@baylibre.com>
2016-09-01nvmem: amlogic: Add Amlogic Meson EFUSE driverCarlo Caione1-0/+93
Add Amlogic EFUSE driver to access hardware data like ethernet address, serial number or IDs. Acked-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Signed-off-by: Carlo Caione <carlo@endlessm.com> Signed-off-by: Kevin Hilman <khilman@baylibre.com>