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  1. 09 10月, 2011 1 次提交
    • H
      regulator: Add driver for gpio-controlled regulators · 3f0292ae
      由 Heiko Stübner 提交于 
      This patch adds support for regulators that can be controlled via gpios.

Examples for such regulators are the TI-tps65024x voltage regulators
with 4 fixed and 1 runtime-switchable voltage regulators
or the TI-bq240XX charger regulators.

The number of controlling gpios is not limited, the mapping between
voltage/current and target gpio state is done via the states map
and the driver can be used for either voltage or current regulators.

A mapping for a regulator with two GPIOs could look like:

gpios = {
	{ .gpio = GPIO1, .flags = GPIOF_OUT_INIT_HIGH, .label = "gpio name 1" },
	{ .gpio = GPIO2, .flags = GPIOF_OUT_INIT_LOW,  .label = "gpio name 2" },
}

The flags element of the gpios array determines the initial state of
the gpio, set during probe. The initial state of the regulator is also
calculated from these values

states = {
	{ .value = volt_or_cur1, .gpios = (0 << 1) | (0 << 0) },
	{ .value = volt_or_cur2, .gpios = (0 << 1) | (1 << 0) },
	{ .value = volt_or_cur3, .gpios = (1 << 1) | (0 << 0) },
	{ .value = volt_or_cur4, .gpios = (1 << 1) | (1 << 0) },
}

The target-state for the n-th gpio is determined by the n-th bit
in the bitfield of the target-value.
Signed-off-by: NHeiko Stuebner <heiko@sntech.de>
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
      3f0292ae
  3. 01 8月, 2011 2 次提交
  5. 27 5月, 2011 1 次提交
  7. 25 5月, 2011 1 次提交
  9. 23 3月, 2011 2 次提交
  11. 12 1月, 2011 3 次提交
  13. 29 10月, 2010 3 次提交
  15. 11 8月, 2010 5 次提交
  17. 08 3月, 2010 1 次提交
  19. 03 3月, 2010 3 次提交
  21. 17 12月, 2009 3 次提交
  23. 14 12月, 2009 1 次提交
  25. 22 9月, 2009 1 次提交
  27. 17 9月, 2009 6 次提交
  29. 15 6月, 2009 3 次提交
  31. 31 3月, 2009 1 次提交
    • D
      regulator: twl4030 regulators · fa16a5c1
      由 David Brownell 提交于 
      Support most of the LDO regulators in the twl4030 family chips.
In the case of LDOs supporting MMC/SD, the voltage controls are
used; but in most other cases, the regulator framework is only
used to enable/disable a supplies, conserving power when a given
voltage rail is not needed.

The drivers/mfd/twl4030-core.c code already sets up the various
regulators according to board-specific configuration, and knows
that some chips don't provide the full set of voltage rails.

The omitted regulators are intended to be under hardware control,
such as during the hardware-mediated system powerup, powerdown,
and suspend states.  Unless/until software hooks are known to
be safe, they won't be exported here.

These regulators implement the new get_status() operation, but
can't realistically implement get_mode(); the status output is
effectively the result of a vote, with the relevant hardware
inputs not exposed.
Signed-off-by: NDavid Brownell <dbrownell@users.sourceforge.net>
Acked-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: NLiam Girdwood <lrg@slimlogic.co.uk>
      fa16a5c1
  33. 11 1月, 2009 1 次提交
  35. 14 10月, 2008 2 次提交