regulator: Move regulator code in dev/regulator

We've removed kernel option EXT_RESOURCES almost two years ago.
While it was ok to have some code under a common 'extres' subdirectory
at first, we no

regulator: Move regulator code in dev/regulator

We've removed kernel option EXT_RESOURCES almost two years ago.
While it was ok to have some code under a common 'extres' subdirectory
at first, we now have a lot of consumer of it and we made it mandatory
so no need to have it under a cryptic name.

Reviewed by: emaste, imp
Sponsored by: Beckhoff Automation GmbH & Co. KG
Differential Revision: https://reviews.freebsd.org/D43194

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sys: Remove $FreeBSD$: two-line .h pattern

Remove /^\s*\*\n \*\s+\$FreeBSD\$$\n/

mmc: Make ext_resources non-optional

EXT_RESOURCES have been introduced in 12-CURRENT and all supported
releases have it enabled in their kernel config.

MFC after: 1 month
Differential Revisio

mmc: Make ext_resources non-optional

EXT_RESOURCES have been introduced in 12-CURRENT and all supported
releases have it enabled in their kernel config.

MFC after: 1 month
Differential Revision: https://reviews.freebsd.org/D33821

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mmc: switch mmc_helper to device_ api

Add generic mmc_helper which uses newly introduced device_*_property
api. Thanks to this change the sd/mmc drivers will be capable
of parsing both DT and ACPI d

mmc: switch mmc_helper to device_ api

Add generic mmc_helper which uses newly introduced device_*_property
api. Thanks to this change the sd/mmc drivers will be capable
of parsing both DT and ACPI description.

Ensure backward compatibility for all mmc_fdt_helper users.

Reviewed by: manu, mw
Sponsored by: Semihalf
Differential revision: https://reviews.freebsd.org/D31598

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mmc_fdt_helper: Add mmc_fdt_set_power

This helper can be used to enable/disable the regulator and starting
the power sequence of sd/sdio/eMMC cards.

Sponsored by: Diablotin Systems
Differential Rev

mmc_fdt_helper: Add mmc_fdt_set_power

This helper can be used to enable/disable the regulator and starting
the power sequence of sd/sdio/eMMC cards.

Sponsored by: Diablotin Systems
Differential Revision: https://reviews.freebsd.org/D30291

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mmc_fdt_helpers: Parse the optional pwrseq element.

If a sd/emmc node have a pwrseq property parse it and get the corresponding
driver.
This can later be used to powerup/powerdown the SDIO card or e

mmc_fdt_helpers: Parse the optional pwrseq element.

If a sd/emmc node have a pwrseq property parse it and get the corresponding
driver.
This can later be used to powerup/powerdown the SDIO card or eMMC.

Sponsored by: Diablotin Systems
Differential Revision: https://reviews.freebsd.org/D30289

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Those functions are here to help fdt mmc controller drivers to parse
the dts to find the supported speeds and the regulators.
Not all DTS have every settings properly defined so host controller
will

Those functions are here to help fdt mmc controller drivers to parse
the dts to find the supported speeds and the regulators.
Not all DTS have every settings properly defined so host controller
will still have to add some caps themselves.
It also add a mmc_fdt_gpio_setup function which will read the cd-gpios
property and register it as the CD pin.
If the pin support interrupts one will be registered and the cd_helper
function will be called.
If the pin doesn't support interrupts the internal taskqueue will poll
for change and call the same cd_helper function.
mmc_fdt_gpio_setup will also parse the wp-gpio property and MMC drivers
can know the write-protect pin value by calling the
mmc_fdt_gpio_get_readonly function.

MFC after: 1 month
Differential Revision: https://reviews.freebsd.org/D23267

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