linux-toradex.git/drivers/tty/serial/ifx6x60.h, branch v4.9.49 Linux kernel for Apalis and Colibri modules serial:ifx6x60:Prevent data transfer when IFX6x60 port is shutdown 2012-11-01T15:50:01+00:00 chao bi chao.bi@intel.com 2012-10-31T08:54:07+00:00 31fe99048859b13a87f476016e7bb5c2b5220c36 This patch is to implement following 2 places to avoid potential error when IFX6x60 port shutdown: 1) Clear Flag IFX_SPI_STATE_IO_AVAILABLE to disable data transfer when Modem port is shutdown; 2) Clear Flag IFX_SPI_STATE_IO_IN_PROGRESS and IFX_SPI_STATE_IO_READY when reopen port. This is because last port shutdown may happen when SPI/DMA transfer is in progress, if the last data transfer is not completed(for example due to modem reset), the Flag IFX_SPI_STATE_IO_IN_PROGRESS will be set forever, so when IFX port is activated again, IFX_SPI_STATE_IO_IN_PROGRESS will prevent transferring data forever. And if don't clear IFX_SPI_STATE_IO_READY, it may cause one more SPI frame transferring in spit there is not data need to be transfer. cc: liu chuansheng <chuansheng.liu@intel.com> cc: Chen Jun <jun.d.chen@intel.com> Signed-off-by: channing <chao.bi@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
This patch is to implement following 2 places to avoid potential error when IFX6x60 port shutdown:
1) Clear Flag IFX_SPI_STATE_IO_AVAILABLE to disable data transfer when Modem port is shutdown;
2) Clear Flag IFX_SPI_STATE_IO_IN_PROGRESS and IFX_SPI_STATE_IO_READY when reopen port.
This is because last port shutdown may happen when SPI/DMA transfer is in progress, if the last
data transfer is not completed(for example due to modem reset), the Flag IFX_SPI_STATE_IO_IN_PROGRESS
will be set forever, so when IFX port is activated again, IFX_SPI_STATE_IO_IN_PROGRESS will prevent
transferring data forever. And if don't clear IFX_SPI_STATE_IO_READY, it may cause one more SPI frame
transferring in spit there is not data need to be transfer.

cc: liu chuansheng <chuansheng.liu@intel.com>
cc: Chen Jun <jun.d.chen@intel.com>
Signed-off-by: channing <chao.bi@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
serial: ifx6x60: different SPI word width configure requires different swap process 2012-10-25T18:29:58+00:00 chao bi chao.bi@intel.com 2012-10-25T01:02:32+00:00 319fb0d21907f771d8ccdb6177fb2fcafabc6ab4 SPI protocol driver only provide one function (swap_buf()) to swap SPI data into big endian format, which is only available when SPI controller's word width is 16 bits. But word width could be configured as 8/16/32 bits, different word width configure should be mapped to different swap methods.This patch is to make SPI protocol driver choose the right swap function corresponding to SPI word width configuration. cc: liu chuansheng <chuansheng.liu@intel.com> cc: Chen Jun <jun.d.chen@intel.com> Signed-off-by: channing <chao.bi@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
SPI protocol driver only provide one function (swap_buf()) to swap SPI
data into big endian format, which is only available when SPI
controller's word width is 16 bits. But word width could be configured
as 8/16/32 bits, different word width configure should be mapped to
different swap methods.This patch is to make SPI protocol driver choose
the right swap function corresponding to SPI word width configuration.

cc: liu chuansheng <chuansheng.liu@intel.com>
cc: Chen Jun <jun.d.chen@intel.com>
Signed-off-by: channing <chao.bi@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
serial: ifx6x60: minor cleanup 2011-02-17T19:16:15+00:00 Russ Gorby russ.gorby@intel.com 2011-02-07T20:02:32+00:00 8115be01462f8af2dc22dd65dd28268bb9b8bff6 renamed spi_driver variable to not be h/w specific set driver name to use DRVNAME define removed commented-out define Signed-off-by: Russ Gorby <russ.gorby@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> 
renamed spi_driver variable to not be h/w specific
set driver name to use DRVNAME define
removed commented-out define

Signed-off-by: Russ Gorby <russ.gorby@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
serial: ifx6x60: expanded info available from platform data 2011-02-03T19:43:10+00:00 Russ Gorby russ.gorby@intel.com 2011-02-02T20:56:58+00:00 2f1522eccb09188f0008168f75420bc2fedc9cae Some platform attributes (e.g. max_hz, use_dma) were being intuited from the modem type. These things should be specified by the platform data. Added max_hz, use_dma to ifx_modem_platform_data definition, replaced is_6160 w/ modem_type, and changed clients accordingly Signed-off-by: Russ Gorby <russ.gorby@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> 
Some platform attributes (e.g. max_hz, use_dma) were being intuited
from the modem type. These things should be specified by the platform
data.

Added max_hz, use_dma to ifx_modem_platform_data definition,
replaced is_6160 w/ modem_type, and changed clients accordingly

Signed-off-by: Russ Gorby <russ.gorby@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
tty: move drivers/serial/ to drivers/tty/serial/ 2011-01-13T20:10:18+00:00 Greg Kroah-Hartman gregkh@suse.de 2011-01-13T20:10:18+00:00 ab4382d27412e7e3e7c936e8d50d8888dfac3df8 The serial drivers are really just tty drivers, so move them to drivers/tty/ to make things a bit neater overall. This is part of the tty/serial driver movement proceedure as proposed by Arnd Bergmann and approved by everyone involved a number of months ago. Cc: Arnd Bergmann <arnd@arndb.de> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Rogier Wolff <R.E.Wolff@bitwizard.nl> Cc: Michael H. Warfield <mhw@wittsend.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> 
The serial drivers are really just tty drivers, so move them to
drivers/tty/ to make things a bit neater overall.

This is part of the tty/serial driver movement proceedure as proposed by
Arnd Bergmann and approved by everyone involved a number of months ago.

Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Rogier Wolff <R.E.Wolff@bitwizard.nl>
Cc: Michael H. Warfield <mhw@wittsend.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>