mci: core: the sd1.0 card can work in 4 bits mode ...

The sd 1.0 card can work in 4 bits mode also.

Signed-off-by: Bo Shen <voice.shen@atmel.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mci: implement non-removable property ...

There is no need to check the card-detect status
for non-removable devices.

Signed-off-by: Lucas Stach <dev@lynxeye.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mci: Add regulator support ...

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mci: core: Typo fix in printk specifier ...

Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mci: Fix version handling ...

Currently the version defines reflect the digits in the version
number. MMC_VERSION_4_41 is defined as 0x441 and MMC_VERSION_4_5
is defined as 0x405. This results in MMC_VERSION_4_5 < MMC_VERSION_4_41
becoming true which was surely not intended. Fix this by
redefining the versions as 0x<major><minor><micro>. This makes the
string generation more complicated but makes versions comparable
again.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mci: add device tree support for DSR ...

add optional DSR support. This should go into the kernel, too

Signed-off-by: Markus Niebel <Markus.Niebel@tqs.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mci: add DSR support ...

The eMMC and the SD-Card specifications describe the optional SET_DSR command.
During measurements at our lab we found that some cards implementing this feature
having really strong driver strengts per default. This can lead to voltage peaks
above the specification of the host on signal edges for data sent from a card to
the host.

Since availability of a given card type may be shorter than the time a certain
hardware will be produced it is useful to have support for this command (Alternative
would be changing termination resistors and adapting the driver strength of the
host to the used card.)

Signed-off-by: Markus Niebel <Markus.Niebel@tqs.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mci: production year for eMMC 4.41 and later ...

Year is coded in 4 bits of CID. eMMC 4.41
adds a new interpretation rule: production
year for 4.41 cards and newer is between 2010
and 2025 with 0 corresponding to 2013.

This fix was inspired by currect kernel code.

Signed-off-by: Markus Niebel <Markus.Niebel@tqs.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mci: Support the correct version for eMMC ...

eMMC is available up to version 4.5 but the
correct version is not decoded. Change version
definitions to support more minor verions, add
missing versions and parse the minor versions from
ext_csd.

After this, card detection code and devinfo reports
correct versions.

Handling is inspired by u-boot code.

Signed-off-by: Markus Niebel <Markus.Niebel@tqs.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

barebox: remove double semicolons ...

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

treewide: Add missing includes ...

A lot of files rely on include/driver.h including include/of.h (and
this including include/errno.h. include the files explicitly so we can
eventually get rid of including of.h from driver.h

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mci: add max_req_size support ...

Some controller such as the ARM AMBA pl181 can not handle more than 16bits
data length request.

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mci: Add devicetree partition parsing ...

MMC/SD cards normally have a DOS/GPT partition table, but sometimes
barebox uses the unpartitioned area to store its environment. Add
devicetree partition parsing also for SD/MMC cards so that we have
a way to describe the partition in the devicetree.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mci: set partnames of eMMC boot partitions ...

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mci: Use tran_speed field to fix highspeed MMC card clock ...

The tran_speed field as decoded from csd is valid in most cases,
so use it to determine the maximum clock we can support. It is
not valid though for MMC highspeed cards, in this case the
csd contains invalid values and we have to set tran_speed explicitly
to the maximum speed. As the values passed into mci_set_clock are
now based on tran_speed we no longer have to limit the rate to
tran_speed in mci_set_clock.

The (intended) effect of this patch is that highspeed MMC cards are
no longer limited to non highspeed rates.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mci: add mci_caps function ...

To let the card caps be card caps and not the intersection between
card caps and host caps.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mci: provide static inline function for mmc_host_is_spi ...

To prevent compiler warnings like:

warning: unused variable 'host'

When CONFIG_MCI_SPI is disabled.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mci: Print more info ...

In devinfo for the card also print:

- capabilities for host and card
- current bus width
- current clock

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mci: rename capabilities flags ...

Use MMC_CAP_ names instead of MMC_MODE_. This makes it more
clear that these are capabilities of host/card and do not refer
to the current mode. These are in line with the Linux Kernel
except for MMC_CAP_MMC_HIGHSPEED_52MHZ which could be fixed
later.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mci: Add devicetree helper function ...

This adds helper code to parse the bus-width and max-frequency
property from devicetree.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mci: implement detect driver callback ...

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mci: set name of mci device to same name as the filename ...

We already have the possibility to register a mci with a certain
filename to get persistent names. However, the device needed to
find the probe parameter still has the name 'mcix'. This patch
changes this by registering the mci device with the same name
as the filename.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mci: embed mci device into struct mci ...

To safe a separate allocation and to make the code simpler.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mci: make mci device a pure device ...

No need to match and probe the device if all that we want is a logical
deivice for the mci.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

driver: Attach info callback to device, not to driver ...

Since the info is device specific and not driver specific, attach
the callback to the device. This makes it possible to have a info
callback for a device which does not have a driver attached.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mci: Add support for MMC boot partitions ...

Some MMC cards support boot partitions. These are special regions
on the MMC card intended to put a bootloader on.

This patch adds support for these partitions, they are accessible
as /dev/diskx.boot[0|1].

Additionally the partitions can be configured bootable using a
device parameter. This can be used to mark the user area or one
of the boot partitions as bootable.

Since this feature is mostly seen on eMMC cards it is made optional
to lower the size impact for boards which do not have eMMC.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Merge branch 'for-next/param' ...

Conflicts:
	drivers/mci/mci-core.c

MCI/Core: honor transmission limits at the card's side ...

The host limits are only one limit we must honor when changing the transmission frequency.
The SD cards have their own limits, so take them also into account.

Signed-off-by: Juergen Beisert <jbe@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

MCI/Core: increase the transmission frequency while card detection ...

According to the SD card spec the detection can happen at 400 kHz

Signed-off-by: Juergen Beisert <jbe@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

console: Use dev_add_param_int for baudrate parameter ...

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>