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Groups > linux.kernel > #1451508

sc16is7xx: fix RTS/CTS implementation and add reading CTS

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Hi Greg,

Here are explanations of the two patches:

0001-sc16is7xx-fix-RTS-CTS-implementation.patch:
RTS/CTS handshaking for sc16is7xx driver does not work, no character is sent 
regardless of the state of CTS.

This test was done on a raspberry pi 2:

1- sc16is7xx_set_baud() overwrites the flow control configuration bits in EFR. 
Writing in EFR has been replaced by an update.
2- As noted in the file Documentation/serial/driver, 
get_mctrl() should return an active state for unsupported entries.

0002-sc16is7xx-add-reading-CTS.patch:
This patch adds the possibility to read the actual status of the CTS input when
 RTS/CTS handshaking is not activated.

After those changes everything works.

Thank you for your hard work.
Have a nice day.
Pascal

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sc16is7xx: fix RTS/CTS implementation and add reading CTS Pascal JEAN <epsilonrt@gmail.com> - 2016-07-27 23:00 +0200
  [PATCH 1/2] sc16is7xx: fix RTS/CTS implementation Pascal JEAN <epsilonrt@gmail.com> - 2016-07-27 23:00 +0200
    Re: [PATCH 1/2] sc16is7xx: fix RTS/CTS implementation Greg KH <gregkh@linuxfoundation.org> - 2016-07-27 23:30 +0200
      Re: [PATCH 1/2] sc16is7xx: fix RTS/CTS implementation Pascal JEAN <epsilonrt@gmail.com> - 2016-07-28 09:00 +0200
      [PATCH 2/2] sc16is7xx: add reading CTS Pascal JEAN <epsilonrt@gmail.com> - 2016-07-28 09:10 +0200
        Re: [PATCH 2/2] sc16is7xx: add reading CTS Greg KH <gregkh@linuxfoundation.org> - 2016-07-28 16:20 +0200

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