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authorMichael Lawnick <ml.lawnick@gmx.de>2010-08-11 18:21:03 +0200
committerJean Delvare <khali@linux-fr.org>2010-08-11 18:21:03 +0200
commit7f528135da9704d67db1f727162024b078e1cd8f (patch)
tree53261ac3cdfbbac4a727843b72453a6f7f1cb080 /include/linux/i2c
parent0826374bff57411d239f2fcb15da3c35af0a93cd (diff)
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i2c: I2C bus multiplexer driver pca954x
I2C driver for PCA954x I2C multiplexer series. Signed-off-by: Michael Lawnick <ml.lawnick@gmx.de> Acked-by: Rodolfo Giometti <giometti@linux.it> Signed-off-by: Jean Delvare <khali@linux-fr.org>
Diffstat (limited to 'include/linux/i2c')
-rw-r--r--include/linux/i2c/pca954x.h47
1 files changed, 47 insertions, 0 deletions
diff --git a/include/linux/i2c/pca954x.h b/include/linux/i2c/pca954x.h
new file mode 100644
index 000000000000..28f1f8d5ab1f
--- /dev/null
+++ b/include/linux/i2c/pca954x.h
@@ -0,0 +1,47 @@
+/*
+ *
+ * pca954x.h - I2C multiplexer/switch support
+ *
+ * Copyright (c) 2008-2009 Rodolfo Giometti <giometti@linux.it>
+ * Copyright (c) 2008-2009 Eurotech S.p.A. <info@eurotech.it>
+ * Michael Lawnick <michael.lawnick.ext@nsn.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+
+#ifndef _LINUX_I2C_PCA954X_H
+#define _LINUX_I2C_PCA954X_H
+
+/* Platform data for the PCA954x I2C multiplexers */
+
+/* Per channel initialisation data:
+ * @adap_id: bus number for the adapter. 0 = don't care
+ * @deselect_on_exit: set this entry to 1, if your H/W needs deselection
+ * of this channel after transaction.
+ *
+ */
+struct pca954x_platform_mode {
+ int adap_id;
+ unsigned int deselect_on_exit:1;
+};
+
+/* Per mux/switch data, used with i2c_register_board_info */
+struct pca954x_platform_data {
+ struct pca954x_platform_mode *modes;
+ int num_modes;
+};
+
+#endif /* _LINUX_I2C_PCA954X_H */