linux.git/drivers/mmc/core, branch v4.2-rc8

mmc: core: Attach PM domain prior probing of SDIO func driver

2015-06-04T08:03:51+00:00

Other subsystem buses attach PM domains during probe, but prior calling
the driver's ->probe() method. During the removal phase, detaching the PM
domain will be done after invoking the driver's ->remove() callback.

Convert the SDIO bus to follow this behavior and add error handling.

Signed-off-by: Ulf Hansson

mmc: core: Remove redundant ->power_restore() callback for SD

2015-06-04T08:03:51+00:00

Since the ->reset() callback is implemented for SD, the ->power_restore()
callback has become redundant, let's remove it.

Signed-off-by: Ulf Hansson

mmc: core: Remove redundant ->power_restore() callback for MMC

2015-06-04T08:03:51+00:00

Since the ->reset() callback is implemented for MMC, the ->power_restore()
callback has become redundant, let's remove it.

Signed-off-by: Ulf Hansson

mmc: mmc: Add driver strength selection

2015-06-01T07:07:14+00:00

Add the ability to set eMMC driver strength
for HS200 and HS400.

Signed-off-by: Adrian Hunter 
Signed-off-by: Ulf Hansson

mmc: mmc: Read card's valid driver strength mask

2015-06-01T07:07:13+00:00

In preparation for supporing drive strength selection
for eMMC, read the card's valid driver strengths.

Note that though the SD spec uses the term "drive strength",
the JEDEC eMMC spec uses the term "driver strength".

Signed-off-by: Adrian Hunter 
Signed-off-by: Ulf Hansson

mmc: core: Record card drive strength

2015-06-01T07:07:13+00:00

In preparation for adding drive strength support
for eMMC, add drive_strength to struct mmc_card
to record the card drive strength for UHS-I modes
and HS200 / HS400. For eMMC this will be needed
when switching between HS200 and HS400.

Signed-off-by: Adrian Hunter 
Signed-off-by: Ulf Hansson

mmc: core: Factor out common code in drive strength selection

2015-06-01T07:07:12+00:00

Make a new function out of common code used for drive
strength selection.

Signed-off-by: Adrian Hunter 
Signed-off-by: Ulf Hansson

mmc: core: Add 'card' to drive strength selection callback

2015-06-01T07:07:12+00:00

In preparation for supporting also eMMC drive strength,
add the 'card' as a parameter so that the callback can
distinguish different types of cards if necessary.

Signed-off-by: Adrian Hunter 
Signed-off-by: Ulf Hansson

mmc: core: Simplify card drive strength mask

2015-06-01T07:07:11+00:00

Card drive strength selection uses a callback to
which a mask of supported drive strengths is passed.
Currently, the bits are checked against the values
in the SD specifications. That is not necessary
because the callback will anyway match the mask
against a valid value. Simplify by taking the mask
as is but still ensuring that the default mandatory
value (type B) is always supported.

Signed-off-by: Adrian Hunter 
Signed-off-by: Ulf Hansson

mmc: core: Allow card drive strength to be different to host

2015-06-01T07:07:11+00:00

Initialization of UHS-I modes for SD and SDIO cards
employs a callback to allow the host driver to
choose a drive strength value. Currently that
assumes the card drive strength and host driver
type must be the same value. Change to let the
callback make that decision and return both the
card drive strength and host driver type.

Signed-off-by: Adrian Hunter 
Signed-off-by: Ulf Hansson