From mboxrd@z Thu Jan 1 00:00:00 1970 From: Peter Hurley Subject: Re: [PATCH v5] tty: serial: men_z135_uart: Fix driver for changes in hardware Date: Sun, 25 Jan 2015 16:17:27 -0500 Message-ID: <54C55D67.8060503@hurleysoftware.com> References: <1421649881-2275-1-git-send-email-johannes.thumshirn@men.de> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1421649881-2275-1-git-send-email-johannes.thumshirn@men.de> Sender: linux-kernel-owner@vger.kernel.org To: Johannes Thumshirn , Greg Kroah-Hartman Cc: Jiri Slaby , linux-serial@vger.kernel.org, linux-kernel@vger.kernel.org List-Id: linux-serial@vger.kernel.org On 01/19/2015 01:44 AM, Johannes Thumshirn wrote: > 16z135 IP Core has changed so the driver needs to be updated to respect > these changes. The following changes have been made: > > * Don't invert the 16z135 modem status register when reading. > * Add module parameter to configure the (baud rate dependent) RX timeout. > Character timeout in seconds = (timeout_reg * baud_reg * 4)/freq_reg. > * Enable the handling of UART core's automatic flow control feature. > When AFE is active disable generation of modem status IRQs. > * Rework the handling of IRQs to be conform with newer FPGA versions and > take precautions not to miss an interrupt because of the destructive read > of the IIR register. > * Correct men_z135_handle_modem_status(), MSR is stat_reg[15:8] not > stat_reg[7:0] > * Correct calling of uart_handle_{dcd,cts}_change() > * Reset CLOCAL when CRTSCTS is set Reviewed-by: Peter Hurley