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path: root/drivers/nvmem/mtk-efuse.c
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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>
2017-11-08nvmem: mtk-efuse: fix different address space warnings of sparseMasahiro Yamada1-9/+17
Fix the following sparse warnings: drivers/nvmem/mtk-efuse.c:24:30: warning: incorrect type in initializer (different address spaces) drivers/nvmem/mtk-efuse.c:24:30: expected void [noderef] <asn:2>*base drivers/nvmem/mtk-efuse.c:24:30: got void *context drivers/nvmem/mtk-efuse.c:37:30: warning: incorrect type in initializer (different address spaces) drivers/nvmem/mtk-efuse.c:37:30: expected void [noderef] <asn:2>*base drivers/nvmem/mtk-efuse.c:37:30: got void *context drivers/nvmem/mtk-efuse.c:69:23: warning: incorrect type in assignment (different address spaces) drivers/nvmem/mtk-efuse.c:69:23: expected void *priv drivers/nvmem/mtk-efuse.c:69:23: got void [noderef] <asn:2>*[assigned] base The type of nvmem_config->priv is (void *), so sparse complains about assignment of the base address with (void __iomem *) type. Even if we cast it out, sparse still warns: warning: cast removes address space of expression Of course, we can shut up the sparse by marking __force, but a more correct way is to put the base address into driver private data. 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>
2017-11-08nvmem: mtk-efuse: use stack for nvmem_config instead of malloc'ing itMasahiro Yamada1-14/+10
nvmem_register() copies all the members of nvmem_config to nvmem_device. So, nvmem_config is one-time use data during probing. There is no point to keep it until the driver detach. Using stack should be no problem because nvmem_config is pretty small. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Acked-by: Sean Wang <sean.wang@mediatek.com> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-06-25nvmem: mtk-efuse: remove nvmem regmap dependencySrinivas Kandagatla1-15/+32
Regmap raw accessors are bus specific implementations, using regmap raw apis in nvmem breaks nvmem providers based on regmap mmio. This patch moves to nvmem support in the driver to use callback instead of regmap, which is what the nvmem core supports now. Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-03-05nvmem: mediatek: Fix later provider initializationAndrew-CT Chen1-1/+22
Possibly, provider driver initialization is later than consumer driver. Use function subsys_initcall to initialize NVMEM provider early to ensure NVMEM consumer doesn't need to -EPROBE_DEFER. Signed-off-by: Andrew-CT Chen <andrew-ct.chen@mediatek.com> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-02-07nvmem: mediatek: Add Mediatek EFUSE driverAndrew-CT Chen1-0/+89
Add Mediatek EFUSE driver to access hardware data like thermal sensor calibration or HDMI impedance. Signed-off-by: Andrew-CT Chen <andrew-ct.chen@mediatek.com> Reviewed-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>