diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2017-06-20 22:08:32 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2017-06-20 22:08:32 +0200 |
| commit | b50fb7c99217922ea36d6e38bae34d84c0587cad (patch) | |
| tree | 5f46167ac7fe5cd87bbed8ca8644f32befc5bbae /drivers/tty/serial/imx.c | |
| parent | 04c848d398797a626608ff48804d809ae6687163 (diff) | |
| parent | 41f1830f5a7af77cf5c86359aba3cbd706687e52 (diff) | |
Merge branch 'linus' into irq/core
Get upstream changes so pending patches won't conflict.
Diffstat (limited to 'drivers/tty/serial/imx.c')
| -rw-r--r-- | drivers/tty/serial/imx.c | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c index 33509b4beaec..bbefddd92bfe 100644 --- a/drivers/tty/serial/imx.c +++ b/drivers/tty/serial/imx.c @@ -2184,7 +2184,9 @@ static int serial_imx_probe(struct platform_device *pdev) * and DCD (when they are outputs) or enables the respective * irqs. So set this bit early, i.e. before requesting irqs. */ - writel(UFCR_DCEDTE, sport->port.membase + UFCR); + reg = readl(sport->port.membase + UFCR); + if (!(reg & UFCR_DCEDTE)) + writel(reg | UFCR_DCEDTE, sport->port.membase + UFCR); /* * Disable UCR3_RI and UCR3_DCD irqs. They are also not @@ -2195,7 +2197,15 @@ static int serial_imx_probe(struct platform_device *pdev) sport->port.membase + UCR3); } else { - writel(0, sport->port.membase + UFCR); + unsigned long ucr3 = UCR3_DSR; + + reg = readl(sport->port.membase + UFCR); + if (reg & UFCR_DCEDTE) + writel(reg & ~UFCR_DCEDTE, sport->port.membase + UFCR); + + if (!is_imx1_uart(sport)) + ucr3 |= IMX21_UCR3_RXDMUXSEL | UCR3_ADNIMP; + writel(ucr3, sport->port.membase + UCR3); } clk_disable_unprepare(sport->clk_ipg); |