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Commit 2276f03b745c297733e41470dde7f32bdd4b52af

Authored by Robert Jarzmik
Committed by Russell King
1 parent 4104980a3c
Exists in master and in 7 other branches imx_3.0.35_4.1.0, imx_3.10.17_1.0.1_ga, imx_3.10.53_1.1.0_ga, imx_3.14.28_1.0.0_ga, smarc-imx_3.10.53_1.1.0_ga, smarc-imx_3.14.28_1.0.0_ga, smarc-l5.0.0_1.0.0-ga

[ARM] 5244/1: Add hardware CTSRTS flow control to pxa serial driver 

Adds hardware CTSRTS control for pxa serial devices through
termios controls.

Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

Showing 1 changed file with 5 additions and 0 deletions Side-by-side Diff

drivers/serial/pxa.c
Diff comments   View file @ 2276f03
... ... @@ -534,6 +534,11 @@
534 534  
535 535 serial_out(up, UART_IER, up->ier);
536 536  
  537 + if (termios->c_cflag & CRTSCTS)
  538 + up->mcr |= UART_MCR_AFE;
  539 + else
  540 + up->mcr &= ~UART_MCR_AFE;
  541 +
537 542 serial_out(up, UART_LCR, cval | UART_LCR_DLAB);/* set DLAB */
538 543 serial_out(up, UART_DLL, quot & 0xff); /* LS of divisor */
539 544 serial_out(up, UART_DLM, quot >> 8); /* MS of divisor */