linux

iv/linux

Fork 0

Commit Graph

Author	SHA1	Message	Date
Randy Dunlap	4d5270e709	lib/linear_ranges: fix repeated words & one typo Change "which which" to "for which" in 3 places. Change "ranges" to possessive "range's" in 1 place. Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Mark Brown <broonie@kernel.org> Cc: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com> Reviewed-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com> Link: https://lore.kernel.org/r/20201221040610.12809-1-rdunlap@infradead.org Signed-off-by: Mark Brown <broonie@kernel.org>	2020-12-28 12:24:47 +00:00
Matti Vaittinen	35e6560080	lib: linear_ranges: Add missing MODULE_LICENSE() When linear_ranges is compiled as module we get warning about missing MODULE_LICENSE(). Fix it by adding MODULE_LICENSE("GPL") as is suggested by SPDX and EXPORTs. Signed-off-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com> Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.com> Link: https://lore.kernel.org/r/20200509151519.GA7100@localhost.localdomain Signed-off-by: Mark Brown <broonie@kernel.org>	2020-05-11 11:55:28 +01:00
Matti Vaittinen	d2218d4e4a	lib: add linear ranges helpers Many devices have control registers which control some measurable property. Often a register contains control field so that change in this field causes linear change in the controlled property. It is not a rare case that user wants to give 'meaningful' control values and driver needs to convert them to register field values. Even more often user wants to 'see' the currently set value - again in meaningful units - and driver needs to convert the values it reads from register to these meaningful units. Examples of this include: - regulators, voltage/current configurations - power, voltage/current configurations - clk(?) NCOs and maybe others I can't think of right now. Provide a linear_range helper which can do conversion from user value to register value 'selector'. The idea here is stolen from regulator framework and patches refactoring the regulator helpers to use this are following. Current implementation does not support inversely proportional ranges but it might be useful if we could support also inversely proportional ranges? Signed-off-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com> Reviewed-by: Mark Brown <broonie@kernel.org> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/59259bc475e0c800eb4bb163f02528c7c01f7b3a.1588944082.git.matti.vaittinen@fi.rohmeurope.com Signed-off-by: Mark Brown <broonie@kernel.org>	2020-05-08 18:18:11 +01:00

Author

SHA1

Message

Date

Randy Dunlap

4d5270e709

lib/linear_ranges: fix repeated words & one typo

Change "which which" to "for which" in 3 places.
Change "ranges" to possessive "range's" in 1 place.

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Mark Brown <broonie@kernel.org>
Cc: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
Reviewed-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
Link: https://lore.kernel.org/r/20201221040610.12809-1-rdunlap@infradead.org
Signed-off-by: Mark Brown <broonie@kernel.org>

2020-12-28 12:24:47 +00:00

Matti Vaittinen

35e6560080

lib: linear_ranges: Add missing MODULE_LICENSE()

When linear_ranges is compiled as module we get warning
about missing MODULE_LICENSE(). Fix it by adding
MODULE_LICENSE("GPL") as is suggested by SPDX and EXPORTs.

Signed-off-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Link: https://lore.kernel.org/r/20200509151519.GA7100@localhost.localdomain
Signed-off-by: Mark Brown <broonie@kernel.org>

2020-05-11 11:55:28 +01:00

Matti Vaittinen

d2218d4e4a

lib: add linear ranges helpers

Many devices have control registers which control some measurable
property. Often a register contains control field so that change in
this field causes linear change in the controlled property. It is not
a rare case that user wants to give 'meaningful' control values and
driver needs to convert them to register field values. Even more
often user wants to 'see' the currently set value - again in
meaningful units - and driver needs to convert the values it reads
from register to these meaningful units. Examples of this include:

- regulators, voltage/current configurations
- power, voltage/current configurations
- clk(?) NCOs

and maybe others I can't think of right now.

Provide a linear_range helper which can do conversion from user value
to register value 'selector'.

The idea here is stolen from regulator framework and patches refactoring
the regulator helpers to use this are following.

Current implementation does not support inversely proportional ranges
but it might be useful if we could support also inversely proportional
ranges?

Signed-off-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
Reviewed-by: Mark Brown <broonie@kernel.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/59259bc475e0c800eb4bb163f02528c7c01f7b3a.1588944082.git.matti.vaittinen@fi.rohmeurope.com
Signed-off-by: Mark Brown <broonie@kernel.org>

2020-05-08 18:18:11 +01:00

3 Commits