staging: rts5208: Eliminate the use of Camel Case in file sd.h

Cleans up checks of "Avoid CamelCase" in file sd.h
Even though the constant "DCM_LOW_FREQUENCY_MODE_SET" is defined and never used,
it's useful to keep it because it documents the device.

Signed-off-by: Gabriela Bittencourt <gabrielabittencourt00@gmail.com>

Link: https://lore.kernel.org/r/20191031230243.3462-4-gabrielabittencourt00@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: rts5208: Remove function soft_reset_sd_card()

Remove function soft_reset_sd_card, as all it does is call reset_sd.
Modify call sites of the former to call the latter instead.
Issue found with Coccinelle.

Signed-off-by: Nishka Dasgupta <nishkadg.linux@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Staging: rts5208: Add SPDX license tags

Add SPDX license tags to remove checkpatch SPDX warnings.

Signed-off-by: Kim Bradley <kim.jamie.bradley@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: rts5208: sd: fix misspelled constant

Fixes the misspelled constant to 'SWITCH_NO_ERR'.
Issue reported by checkpatch.pl

Signed-off-by: Sumit Pundir <pundirsumit11@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: rts5208: sd.h: Alignment fixes

Lining up code with open parenthses found by checkpatch

Signed-off-by: Wayne Porter <wporter82@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: rts5208: Convert variable from int to bool and propagate the change to function parameters

This patch convert local variables declared as int into booleans.
It also propagates the conversion when these variables were used
as function parameters.

Coccinelle was used to generate this patch.

Signed-off-by: Quentin Lambert <lambert.quentin@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

staging: rts5208: add support for rts5208 and rts5288

There are still many rts5208/5288 card readers being used, but no
drivers are supported them in kernel now. This driver can make a
great convenience for people who use them.

Many other rts-series card reader are supported by mfd driver, but due
to much difference with others, rts5208/5288 can not add into mfd driver
pretty now, so we provide a separated driver here to support the device.

Signed-off-by: Micky Ching <micky_ching@realsil.com.cn>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>