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authorShimoda, Yoshihiro <yoshihiro.shimoda.uh@renesas.com>2012-04-20 14:50:36 +0900
committerGrant Likely <grant.likely@secretlab.ca>2012-05-19 22:37:16 -0600
commita3633fe7aa7022e2e9b2b799a0cbf3d6944d8ba5 (patch)
treeacd8bfc00d867708e90b8e28e84de5617c9c7ac4 /include/linux/spi
parentd195f7bebc14ece71bf11d09f1726ee6f6b4f4b9 (diff)
downloadop-kernel-dev-a3633fe7aa7022e2e9b2b799a0cbf3d6944d8ba5.zip
op-kernel-dev-a3633fe7aa7022e2e9b2b799a0cbf3d6944d8ba5.tar.gz
spi/rspi: add dmaengine support
This patch adds dmaengine supporting using sh_dma driver. The module receives data by DMAC, it also needs TX DMAC to generate SPI's clocks. Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Diffstat (limited to 'include/linux/spi')
-rw-r--r--include/linux/spi/rspi.h31
1 files changed, 31 insertions, 0 deletions
diff --git a/include/linux/spi/rspi.h b/include/linux/spi/rspi.h
new file mode 100644
index 0000000..900f0e3
--- /dev/null
+++ b/include/linux/spi/rspi.h
@@ -0,0 +1,31 @@
+/*
+ * Renesas SPI driver
+ *
+ * Copyright (C) 2012 Renesas Solutions Corp.
+ *
+ * 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; version 2 of the License.
+ *
+ * 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ */
+
+#ifndef __LINUX_SPI_RENESAS_SPI_H__
+#define __LINUX_SPI_RENESAS_SPI_H__
+
+struct rspi_plat_data {
+ unsigned int dma_tx_id;
+ unsigned int dma_rx_id;
+
+ unsigned dma_width_16bit:1; /* DMAC read/write width = 16-bit */
+};
+
+#endif
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