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4a670ac3e7
Similar to the existing reg_downshift mechanism, that is used to translate register addresses on busses that have a smaller address stride, it's also possible to want to upshift register addresses. Such a case was encountered when network PHYs and PCS that usually sit on a MDIO bus (16-bits register with a stride of 1) are integrated directly as memory-mapped devices. Here, the same register layout defined in 802.3 is used, but the register now have a larger stride. Introduce a mechanism to also allow upshifting register addresses. Re-purpose reg_downshift into a more generic, signed reg_shift, whose sign indicates the direction of the shift. To avoid confusion, also introduce macros to explicitly indicate if we want to downshift or upshift. For bisectability, change any use of reg_downshift to use reg_shift. Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com> Tested-by: Colin Foster <colin.foster@in-advantage.com> Link: https://lore.kernel.org/r/20230407152604.105467-1-maxime.chevallier@bootlin.com Signed-off-by: Mark Brown <broonie@kernel.org> |
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| .. | ||
| internal.h | ||
| Kconfig | ||
| Makefile | ||
| regcache-flat.c | ||
| regcache-maple.c | ||
| regcache-rbtree.c | ||
| regcache.c | ||
| regmap-ac97.c | ||
| regmap-debugfs.c | ||
| regmap-fsi.c | ||
| regmap-i2c.c | ||
| regmap-i3c.c | ||
| regmap-irq.c | ||
| regmap-kunit.c | ||
| regmap-mdio.c | ||
| regmap-mmio.c | ||
| regmap-ram.c | ||
| regmap-sccb.c | ||
| regmap-sdw-mbq.c | ||
| regmap-sdw.c | ||
| regmap-slimbus.c | ||
| regmap-spi-avmm.c | ||
| regmap-spi.c | ||
| regmap-spmi.c | ||
| regmap-w1.c | ||
| regmap.c | ||
| trace.h | ||