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authorSascha Hauer <s.hauer@pengutronix.de>2011-08-08 08:22:41 +0200
committerSascha Hauer <s.hauer@pengutronix.de>2011-08-08 08:22:41 +0200
commit1a43f2012455a977397deffe35912fd3f3ce17b9 (patch)
tree5189f337df44e7a495fbd097cd476b0380babd8c /arch/sh/kernel/cpu/sh3/serial-sh770x.c
parente1b96ada659431669efaf3defa997abf5db68130 (diff)
parent322a8b034003c0d46d39af85bf24fee27b902f48 (diff)
downloadop-kernel-dev-1a43f2012455a977397deffe35912fd3f3ce17b9.zip
op-kernel-dev-1a43f2012455a977397deffe35912fd3f3ce17b9.tar.gz
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.c33
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 0000000..4f7242c
--- /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,
+};
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