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>

mci: Use dev_add_param_int for probe parameter ...

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

mci: Fix bug if probe parameter is omitted ...

barebox@Phytec phyCORE-i.MX27:/ mci0.probe=
unable to handle NULL pointer dereference at address 0x00000000
pc : [<a7f24700>]    lr : [<a7f193f4>]
sp : a7fff8e0  ip : 00000000  fp : 00000001
r10: 00000000  r9 : a6ffba8c  r8 : 00000000
r7 : a7fffad0  r6 : a6ffbb04  r5 : a6fdd5cc  r4 : a6fdd658
r3 : a7f18760  r2 : 00000000  r1 : 00000000  r0 : 00000000
Flags: nZCv  IRQs off  FIQs off  Mode SVC_32
[<a7f24700>] (simple_strtoul+0xc/0xc0) from [<a7f193f4>] (mci_set_probe+0xc94/0xd64)
[<a7f193f4>] (mci_set_probe+0xc94/0xd64) from [<a7f252cc>] (dev_set_param+0x74/0x8c)
[<a7f252cc>] (dev_set_param+0x74/0x8c) from [<a7f0606c>] (setenv+0x60/0xd8)
[<a7f0606c>] (setenv+0x60/0xd8) from [<a7f00820>] (set_local_var.isra.3+0x5c/0x7c)
[<a7f00820>] (set_local_var.isra.3+0x5c/0x7c) from [<a7f01a6c>] (run_list_real+0x494/0x934)
[<a7f01a6c>] (run_list_real+0x494/0x934) from [<a7f01400>] (parse_stream_outer+0x198/0x270)
[<a7f01400>] (parse_stream_outer+0x198/0x270) from [<a7f0209c>] (run_shell+0x3c/0x7c)
[<a7f0209c>] (run_shell+0x3c/0x7c) from [<a7f05494>] (execute_command+0x38/0x78)
[<a7f05494>] (execute_command+0x38/0x78) from [<a7f01db8>] (run_list_real+0x7e0/0x934)
[<a7f01db8>] (run_list_real+0x7e0/0x934) from [<a7f019ec>] (run_list_real+0x414/0x934)
[<a7f39578>] (unwind_backtrace+0x0/0xa8) from [<a7f24ed4>] (panic+0x28/0x3c)
[<a7f24ed4>] (panic+0x28/0x3c) from [<a7f39a3c>] (do_exception+0x10/0x14)
[<a7f39a3c>] (do_exception+0x10/0x14) from [<a7f39ac8>] (do_data_abort+0x2c/0x38)
[<a7f39ac8>] (do_data_abort+0x2c/0x38) from [<a7f39788>] (data_abort+0x48/0x60)

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

mci-core: fix coding style ...

Signed-off-by: Hubert Feurstein <h.feurstein@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mci-core: use dev_* for messages ...

Signed-off-by: Hubert Feurstein <h.feurstein@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mci: add card_write_protected ...

Currently there is no common way for the mci host driver to tell
that thee car is write protected. This adds a card_write_protected callback
which is used by the framework to tell whether it's protected or not.

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

mci: Add card_present callback ...

Currently there is no common way for the mci host driver to tell
that there is no card present. This adds a card_present callback
which is used by the framework to tell whether it's present or not.

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

mci: Always add probe parameter for cards ...

Always add the 'probe' parameter to cards so that scripts can
rely on the parameter to be present.

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

mci: return 0 for probe parameter even when already initialized ...

This makes the behaviour more friendly to scripts which can now
set the probe parameter without checking if it has been done before.
Having a succesful result now means that there is a card.

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

mci: Allow to specify device name ...

When multiple MMC/SD cards are present in the system we often
have to have persistent names to identify them during runtime.
This patch allows to overwrite the devicename which is used.

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

drivers/base: fix corrupt device tree ...

dev_add_child is a very unsafe function. If called multiple times
it allows setting the same device to different parents thus corrupting
the siblings list. This happens regularly since:

| commit c2e568d
| Author: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
| Date:   Sat Nov 3 16:11:05 2012 +0100
|
|    bus: add bus device
|
|    automatically add it as parent of any bus device if none already specified
|
|    we have now a nice output per bus

If for example a FATfs is mounted this nice output per bus often ends with:

>     `---- fat0
>     `---- 0
>          `---- 0x86f0000087020031-0x86f000410df27124: /dev/<NULL>
>          `---- sram00
>               `---- 0x00000000-0xffffffffffffffff: /dev/<NULL>
>               `---- 0x00000000-0xffffffffffffffff: /dev/<NULL>
>               unable to handle NULL pointer dereference at address 0x0000000c
> pc : [<87f08a20>]    lr : [<87f08a04>]
> sp : 86eff8c0  ip : 87f3fbde  fp : ffffffff
> r10: ffffffff  r9 : 00000000  r8 : 00000003
> r7 : 86f075b8  r6 : 00000002  r5 : ffffffec  r4 : 86f07544
> r3 : 00000000  r2 : 43f900b4  r1 : 00000020  r0 : 00000005
> Flags: Nzcv  IRQs off  FIQs off  Mode SVC_32
> [<87f08a20>] (do_devinfo_subtree+0x90/0x130) from [<87f08a90>] (do_devinfo_subtree+0x100/0x130)
>
> [<87f3e070>] (unwind_backtrace+0x0/0x90) from [<87f28514>] (panic+0x28/0x3c)
> [<87f28514>] (panic+0x28/0x3c) from [<87f3e4b8>] (do_exception+0x10/0x14)
> [<87f3e4b8>] (do_exception+0x10/0x14) from [<87f3e544>] (do_data_abort+0x2c/0x38)
> [<87f3e544>] (do_data_abort+0x2c/0x38) from [<87f3e268>] (data_abort+0x48/0x60)

This patch fixes this by adding a device to its parents children list in
register_device so that dev_add_child is no longer needed. This function
is removed from the tree. Now callers of register_device have to clearly
set the parent *before* registering a device.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Reported-by: Jan Lübbe <jlu@pengutronix.de>

mci: Fix capacity calculation for high capacity MMC cards ...

For these cards we have to calculate the size using the ext csd
sector count fields.

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

mci: Add STUFF_BITS and use it ...

This adds the STUFF_BITS macro from the kernel to extract numbers
from the csd. This also fixes several places where the csd fields
in SD cards differ from MMC cards.

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

Merge branch 'for-next/mci'

mci-core: fix debug Capacity cast ...

so we print the correct size

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

mci-core: spi fix op cond support ...

so we can detect sd card version 2.0 on spi

as we need to the OCR_HCS on version 2.0 regardless if it's a SPI or not

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

switch all platform_bus device/driver registering to platform_driver/device_register ...

now register_driver and register_device are for bus only usage.

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>

Treewide: remove address of the Free Software Foundation ...

The FSF address has changed in the past. Instead of updating it
each time the address changes, just drop it completely treewide.

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

Use DEVICE_ID_DYNAMIC where applicable ...

We now have DEVICE_ID_DYNAMIC for dynamic allocation of device ids,
Use it where applicable.

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

drivers/mci: fix read/write stalling ...

If a read or write operation encounters an error, the card
might stay in "recv" or "data" state, and never get back to
"tran" state.

In these cases, the host is required to send a CMD12 (end
transmission) to switch the FSM of the card back to "tran"
state, as described in MMC Specification, chapter "Data
Transfer Mode".

Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mci: Fix 8 bit mmc cards ...

Currently we test the cards capabilities for being 8bit capable.
This does not work since noone ever sets this bit. Unfortunately
there is no bit to test 8bit capability, so we introduce a patch
from the kernel which puts the mmc card into 8bit mode and tests
whether it can succesfully read the ext_csd in this mode.

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

mci: Add a complete list of EXT_CSD_* fields from the kernel ...

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

mci: Be more verbose on what device is associated to which disk ...

This is quite useful when multiple SD cards are present so spare
some bytes to print this information.

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

mci: cdev_find_free_index won't fail, no need to check ...

There will always be the next integer number unless we register
INT_MAX disk devices which is rarely the case.

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

mci: factor out mci/sd specific startup functions ...

This saves an indention level and makes the code more readable.

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

mci: replace pr_debug with dev_dbg ...

The mci layer uses pr_debug throughout. Use dev_dbg instead
which is very useful when multiple cards are involved.

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

mci: Use struct mci for internal argument passing ...

The mci layer currently passes around a struct device_d for
its internal use. Apart from being confusing this drops
typesafety for no good reason. Instead, pass around a struct
mci.

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