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author | Sascha Hauer <s.hauer@pengutronix.de> | 2011-08-08 08:22:41 +0200 |
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committer | Sascha Hauer <s.hauer@pengutronix.de> | 2011-08-08 08:22:41 +0200 |
commit | 1a43f2012455a977397deffe35912fd3f3ce17b9 (patch) | |
tree | 5189f337df44e7a495fbd097cd476b0380babd8c /arch/sh/kernel/cpu/sh3/serial-sh770x.c | |
parent | ARM: iMX5: Don't enable DPLL if it already enabled (diff) | |
parent | Linux 3.1-rc1 (diff) | |
download | linux-1a43f2012455a977397deffe35912fd3f3ce17b9.tar.xz linux-1a43f2012455a977397deffe35912fd3f3ce17b9.zip |
Merge commit 'v3.1-rc1' into imx-fixes
Diffstat (limited to 'arch/sh/kernel/cpu/sh3/serial-sh770x.c')
-rw-r--r-- | arch/sh/kernel/cpu/sh3/serial-sh770x.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/arch/sh/kernel/cpu/sh3/serial-sh770x.c b/arch/sh/kernel/cpu/sh3/serial-sh770x.c new file mode 100644 index 000000000000..4f7242c676b3 --- /dev/null +++ b/arch/sh/kernel/cpu/sh3/serial-sh770x.c @@ -0,0 +1,33 @@ +#include <linux/serial_sci.h> +#include <linux/serial_core.h> +#include <linux/io.h> +#include <cpu/serial.h> + +#define SCPCR 0xA4000116 +#define SCPDR 0xA4000136 + +static void sh770x_sci_init_pins(struct uart_port *port, unsigned int cflag) +{ + unsigned short data; + + /* We need to set SCPCR to enable RTS/CTS */ + data = __raw_readw(SCPCR); + /* Clear out SCP7MD1,0, SCP6MD1,0, SCP4MD1,0*/ + __raw_writew(data & 0x0fcf, SCPCR); + + if (!(cflag & CRTSCTS)) { + /* We need to set SCPCR to enable RTS/CTS */ + data = __raw_readw(SCPCR); + /* Clear out SCP7MD1,0, SCP4MD1,0, + Set SCP6MD1,0 = {01} (output) */ + __raw_writew((data & 0x0fcf) | 0x1000, SCPCR); + + data = __raw_readb(SCPDR); + /* Set /RTS2 (bit6) = 0 */ + __raw_writeb(data & 0xbf, SCPDR); + } +} + +struct plat_sci_port_ops sh770x_sci_port_ops = { + .init_pins = sh770x_sci_init_pins, +}; |