[PATCH v2 00/16] omap_hsmmc: regulator usage cleanup and fixes

[Kishon Vijay Abraham I <kishon@ti.com>]

Changes from v1:
*) return on -EPROBE_DEFER and other fatal errors. (Don't return only
   if the return value is -ENODEV)
*) Remove the beagle x15 dts patch. It can be part of a different
   series.
*) Avoid using regulator_is_enabled for vqmmc since if the regulator
   is shared and the other users are not using regulator_is_enabled
   then there can be unbalanced regulator_enable/regulator_disable

This patch series does the following
*) Uses devm_regulator_get_optional() for vmmc and then removes the
   CONFIG_REGULATOR check altogether.
*) return on -EPROBE_DEFER and any other fatal errors
*) enable/disable vmmc_aux regulator based on prior state

I've pushed this patch series to
git://git.ti.com/linux-phy/linux-phy.git mmc_regulator_cleanup_fixes_v2

Please note the branch also has the pbias fixes [1] & [2].
[1] -> https://lkml.org/lkml/2015/7/27/358
[2] -> https://lkml.org/lkml/2015/7/27/391

This series is in preparation for implementing the voltage switch
sequence so that UHS cards can be supported.

Did basic read/write test in J6, J6 Eco, Beagle-x15, AM437x EVM,
Beaglebone black, OMAP5 uEVM and OMAP4 PANDA.

Kishon Vijay Abraham I (15):
  mmc: host: omap_hsmmc: use devm_regulator_get_optional() for vmmc
  mmc: host: omap_hsmmc: return on fatal errors from omap_hsmmc_reg_get
  mmc: host: omap_hsmmc: cleanup omap_hsmmc_reg_get()
  mmc: host: omap_hsmmc: use the ocrmask provided by the vmmc regulator
  mmc: host: omap_hsmmc: use mmc_host's vmmc and vqmmc
  mmc: host: omap_hsmmc: remove unnecessary pbias set_voltage
  mmc: host: omap_hsmmc: return error if any of the regulator APIs fail
  mmc: host: omap_hsmmc: add separate functions for enable/disable
    supply
  mmc: host: omap_hsmmc: add separate function to set pbias
  mmc: host: omap_hsmmc: avoid pbias regulator enable on power off
  mmc: host: omap_hsmmc: don't use ->set_power to set initial regulator
    state
  mmc: host: omap_hsmmc: enable/disable vmmc_aux regulator based on
    previous state
  mmc: host: omap_hsmmc: use regulator_is_enabled to find pbias status
  mmc: host: omap_hsmmc: use ios->vdd for setting vmmc voltage
  mmc: host: omap_hsmmc: remove CONFIG_REGULATOR check

Roger Quadros (1):
  mmc: host: omap_hsmmc: use "mmc_of_parse_voltage" to get ocr_avail

 .../devicetree/bindings/mmc/ti-omap-hsmmc.txt      |    2 +
 drivers/mmc/host/omap_hsmmc.c                      |  340 +++++++++++++-------
 2 files changed, 224 insertions(+), 118 deletions(-)

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1.7.9.5