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| author | Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> | 2011-01-31 10:50:43 +0300 |
|---|---|---|
| committer | Nobuhiro Iwamatsu <iwamatsu@nigauri.org> | 2011-02-02 10:38:41 +0300 |
| commit | 6639562e6a7f2ae3160ef120d18b7796a2ff8e19 (patch) | |
| tree | d3bb3e2b276669a59ce4c88a21273ef2c751a281 /drivers/spi/sh_spi.h | |
| parent | 68260aab93afd7f4570d09cc63ed32752841039d (diff) | |
| download | u-boot-6639562e6a7f2ae3160ef120d18b7796a2ff8e19.tar.xz | |
spi: add support SuperH SPI module
SH7757 has SPI module. This patch supports it.
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
Diffstat (limited to 'drivers/spi/sh_spi.h')
| -rw-r--r-- | drivers/spi/sh_spi.h | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/drivers/spi/sh_spi.h b/drivers/spi/sh_spi.h new file mode 100644 index 0000000000..b1cf98cc33 --- /dev/null +++ b/drivers/spi/sh_spi.h @@ -0,0 +1,79 @@ +/* + * SH SPI driver + * + * Copyright (C) 2011 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 __SH_SPI_H__ +#define __SH_SPI_H__ + +#include <spi.h> + +struct sh_spi_regs { + unsigned long tbr_rbr; + unsigned long resv1; + unsigned long cr1; + unsigned long resv2; + unsigned long cr2; + unsigned long resv3; + unsigned long cr3; + unsigned long resv4; + unsigned long cr4; +}; + +/* CR1 */ +#define SH_SPI_TBE 0x80 +#define SH_SPI_TBF 0x40 +#define SH_SPI_RBE 0x20 +#define SH_SPI_RBF 0x10 +#define SH_SPI_PFONRD 0x08 +#define SH_SPI_SSDB 0x04 +#define SH_SPI_SSD 0x02 +#define SH_SPI_SSA 0x01 + +/* CR2 */ +#define SH_SPI_RSTF 0x80 +#define SH_SPI_LOOPBK 0x40 +#define SH_SPI_CPOL 0x20 +#define SH_SPI_CPHA 0x10 +#define SH_SPI_L1M0 0x08 + +/* CR3 */ +#define SH_SPI_MAX_BYTE 0xFF + +/* CR4 */ +#define SH_SPI_TBEI 0x80 +#define SH_SPI_TBFI 0x40 +#define SH_SPI_RBEI 0x20 +#define SH_SPI_RBFI 0x10 +#define SH_SPI_WPABRT 0x04 +#define SH_SPI_SSS 0x01 + +#define SH_SPI_FIFO_SIZE 32 + +struct sh_spi { + struct spi_slave slave; + struct sh_spi_regs *regs; +}; + +static inline struct sh_spi *to_sh_spi(struct spi_slave *slave) +{ + return container_of(slave, struct sh_spi, slave); +} + +#endif + |