diff options
| author | Allen Martin <amartin@nvidia.com> | 2013-03-16 18:58:13 +0000 |
|---|---|---|
| committer | Tom Warren <twarren@nvidia.com> | 2013-03-25 09:56:07 -0700 |
| commit | 77c42e80b936cf44334a59a7890c775712f5b707 (patch) | |
| tree | 124810d32c093cd8a9fc9d71ec98c7113c17312a /arch | |
| parent | af77fdb2ce7184104c6eb5a7b981def549c771e0 (diff) | |
tegra114: add SPI driver
Add driver for tegra114 SPI controller. This controller is not
compatible with either the tegra20 or tegra30 controllers, so it
requires a new driver.
Signed-off-by: Allen Martin <amartin@nvidia.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>
Reviewed-by: Stephen Warren <swarren@nvidia.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/include/asm/arch-tegra114/tegra114_spi.h | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/arch/arm/include/asm/arch-tegra114/tegra114_spi.h b/arch/arm/include/asm/arch-tegra114/tegra114_spi.h new file mode 100644 index 0000000000..48197bc27f --- /dev/null +++ b/arch/arm/include/asm/arch-tegra114/tegra114_spi.h @@ -0,0 +1,41 @@ +/* + * NVIDIA Tegra SPI controller + * + * Copyright 2010-2013 NVIDIA Corporation + * + * This software may be used and distributed according to the + * terms of the GNU Public License, Version 2, incorporated + * herein by reference. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * Version 2 as published by the Free Software Foundation. + * + * 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., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#ifndef _TEGRA114_SPI_H_ +#define _TEGRA114_SPI_H_ + +#include <asm/types.h> + +int tegra114_spi_init(int *node_list, int count); +int tegra114_spi_cs_is_valid(unsigned int bus, unsigned int cs); +struct spi_slave *tegra114_spi_setup_slave(unsigned int bus, unsigned int cs, + unsigned int max_hz, unsigned int mode); +void tegra114_spi_free_slave(struct spi_slave *slave); +int tegra114_spi_claim_bus(struct spi_slave *slave); +void tegra114_spi_cs_activate(struct spi_slave *slave); +void tegra114_spi_cs_deactivate(struct spi_slave *slave); +int tegra114_spi_xfer(struct spi_slave *slave, unsigned int bitlen, + const void *data_out, void *data_in, unsigned long flags); + +#endif /* _TEGRA114_SPI_H_ */ |