mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-08-29 05:18:51 +09:00
![Yoshihiro Shimoda](/assets/img/avatar_default.png)
The module has 4 chip select signals. This patch supports it. Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
81 lines
1.8 KiB
C
81 lines
1.8 KiB
C
/*
|
|
* 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_SSS1 0x08
|
|
#define SH_SPI_WPABRT 0x04
|
|
#define SH_SPI_SSS0 0x01
|
|
|
|
#define SH_SPI_FIFO_SIZE 32
|
|
#define SH_SPI_NUM_CS 4
|
|
|
|
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
|