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| author | Paul Mundt <lethal@linux-sh.org> | 2011-06-15 11:03:58 +0200 |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2011-06-15 11:03:58 +0200 |
| commit | 1f83812d61de8c09ad6ab6be29e0ebd0817d16f1 (patch) | |
| tree | 32cc463e07a5efd7ec4702df003780664f543d5c /arch/sh/kernel/cpu/sh3/serial-sh770x.c | |
| parent | sh, exec: remove redundant set_fs(USER_DS) (diff) | |
| parent | serial: sh-sci: Support generic SCLSR overrun detection. (diff) | |
| download | linux-1f83812d61de8c09ad6ab6be29e0ebd0817d16f1.tar.xz linux-1f83812d61de8c09ad6ab6be29e0ebd0817d16f1.zip | |
Merge branch 'common/serial-rework' into sh-latest
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, +}; |