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authorDan Williams <dan.j.williams@intel.com>2012-04-11 01:10:53 +0400
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2012-04-19 02:07:53 +0400
commitbf03f65b7967df5807ddef7b99f8a41d4c94fc70 (patch)
tree558ae56db6ddedae03eee1bc569321d8ab571d0a /include/linux/of_serial.h
parent7c77c8decfd14a611ddcba071782a9520e4bb3f8 (diff)
downloadlinux-bf03f65b7967df5807ddef7b99f8a41d4c94fc70.tar.xz
tegra, serial8250: add ->handle_break() uart_port op
The "KT" serial port has another use case for a "received break" quirk, so before adding another special case to the 8250 core take this opportunity to push such quirks out of the core and into a uart_port op. Stephen says: "If the callback function is to no longer live in 8250.c itself, arch/arm/mach-tegra/devices.c isn't logically a good place to put it, and that file will be going away once we get rid of all the board files and move solely to device tree." ...so since 8250_pci.c houses all the quirks for pci serial devices this quirk is similarly housed in of_serial.c. Once the open firmware conversion completes the infrastructure details (include/linux/of_serial.h, and the export) can all be removed to make this self contained to of_serial.c. Cc: Nhan H Mai <nhan.h.mai@intel.com> Cc: Colin Cross <ccross@android.com> Cc: Olof Johansson <olof@lixom.net> [stephen: kill CONFIG_SERIAL_TEGRA in favor just using CONFIG_ARCH_TEGRA] Cc: Grant Likely <grant.likely@secretlab.ca> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Sudhakar Mamillapalli <sudhakar@fb.com> Reported-by: Alan Cox <alan@lxorguk.ukuu.org.uk> Acked-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com> Acked-by: Stephen Warren <swarren@wwwdotorg.org> Tested-by: Stephen Warren <swarren@wwwdotorg.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux/of_serial.h')
-rw-r--r--include/linux/of_serial.h17
1 files changed, 17 insertions, 0 deletions
diff --git a/include/linux/of_serial.h b/include/linux/of_serial.h
new file mode 100644
index 000000000000..4a73ed80b4c0
--- /dev/null
+++ b/include/linux/of_serial.h
@@ -0,0 +1,17 @@
+#ifndef __LINUX_OF_SERIAL_H
+#define __LINUX_OF_SERIAL_H
+
+/*
+ * FIXME remove this file when tegra finishes conversion to open firmware,
+ * expectation is that all quirks will then be self-contained in
+ * drivers/tty/serial/of_serial.c.
+ */
+#ifdef CONFIG_ARCH_TEGRA
+extern void tegra_serial_handle_break(struct uart_port *port);
+#else
+static inline void tegra_serial_handle_break(struct uart_port *port)
+{
+}
+#endif
+
+#endif /* __LINUX_OF_SERIAL */