ARM: 6966/1: ep93xx: fix inverted RTS/DTR signals on uart1
It was discovered by Roberto Bergo, that RTS/DTR signals are inverted after the boot, because it was causing him problems with hardware controlled modem connected on ttyAM0. Todd Valentic came with this patch for the issue. Discussion: http://tech.groups.yahoo.com/group/ts-7000/message/20259 Comments from Petr Štetiar: Sorry, but forget to add Acked-by[1]: 1. https://patchwork.kernel.org/patch/873052/ Cc: Ryan Mallon <ryan@bluewatersys.com> Cc: Hartley Sweeten <hsweeten@visionengravers.com> Signed-off-by: Todd Valentic <todd.valentic@sri.com> Tested-by: Roberto Bergo <roberto.bergo@robson.it> Signed-off-by: Petr Štetiar <ynezz@true.cz> Acked-by: H Hartley Sweeten <hsweeten@visionengravers.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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@ -251,9 +251,9 @@ static void ep93xx_uart_set_mctrl(struct amba_device *dev,
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unsigned int mcr;
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mcr = 0;
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if (!(mctrl & TIOCM_RTS))
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if (mctrl & TIOCM_RTS)
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mcr |= 2;
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if (!(mctrl & TIOCM_DTR))
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if (mctrl & TIOCM_DTR)
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mcr |= 1;
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__raw_writel(mcr, base + EP93XX_UART_MCR_OFFSET);
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