summaryrefslogtreecommitdiffstats
path: root/include
diff options
context:
space:
mode:
authorLaxman Dewangan <ldewangan@nvidia.com>2012-10-30 12:34:05 +0530
committerMark Brown <broonie@opensource.wolfsonmicro.com>2012-10-30 18:38:35 +0000
commitdc4dc36056392c0b0b1ca9e81bebff964b9297e0 (patch)
treeadbe20e39ba98a2ae893548511b656048686cd85 /include
parent8f0d8163b50e01f398b14bcd4dc039ac5ab18d64 (diff)
downloadlinux-dc4dc36056392c0b0b1ca9e81bebff964b9297e0.tar.bz2
spi: tegra: add spi driver for SLINK controller
Tegra20/Tegra30 supports the spi interface through its SLINK controller. Add spi driver for SLINK controller. Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Reviewed-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'include')
-rw-r--r--include/linux/spi/spi-tegra.h40
1 files changed, 40 insertions, 0 deletions
diff --git a/include/linux/spi/spi-tegra.h b/include/linux/spi/spi-tegra.h
new file mode 100644
index 000000000000..786932c62edb
--- /dev/null
+++ b/include/linux/spi/spi-tegra.h
@@ -0,0 +1,40 @@
+/*
+ * spi-tegra.h: SPI interface for Nvidia Tegra20 SLINK controller.
+ *
+ * Copyright (C) 2011 NVIDIA Corporation
+ *
+ * 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.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+
+#ifndef _LINUX_SPI_TEGRA_H
+#define _LINUX_SPI_TEGRA_H
+
+struct tegra_spi_platform_data {
+ int dma_req_sel;
+ unsigned int spi_max_frequency;
+};
+
+/*
+ * Controller data from device to pass some info like
+ * hw based chip select can be used or not and if yes
+ * then CS hold and setup time.
+ */
+struct tegra_spi_device_controller_data {
+ bool is_hw_based_cs;
+ int cs_setup_clk_count;
+ int cs_hold_clk_count;
+};
+
+#endif /* _LINUX_SPI_TEGRA_H */