| Yoshihiro Shimoda | 6639562 | 2011-01-31 16:50:43 +0900 | [diff] [blame] | 1 | /* |
| 2 | * SH SPI driver |
| 3 | * |
| 4 | * Copyright (C) 2011 Renesas Solutions Corp. |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; version 2 of the License. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License |
| 16 | * along with this program; if not, write to the Free Software |
| 17 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 18 | * |
| 19 | */ |
| 20 | |
| 21 | #ifndef __SH_SPI_H__ |
| 22 | #define __SH_SPI_H__ |
| 23 | |
| 24 | #include <spi.h> |
| 25 | |
| 26 | struct sh_spi_regs { |
| 27 | unsigned long tbr_rbr; |
| 28 | unsigned long resv1; |
| 29 | unsigned long cr1; |
| 30 | unsigned long resv2; |
| 31 | unsigned long cr2; |
| 32 | unsigned long resv3; |
| 33 | unsigned long cr3; |
| 34 | unsigned long resv4; |
| 35 | unsigned long cr4; |
| 36 | }; |
| 37 | |
| 38 | /* CR1 */ |
| 39 | #define SH_SPI_TBE 0x80 |
| 40 | #define SH_SPI_TBF 0x40 |
| 41 | #define SH_SPI_RBE 0x20 |
| 42 | #define SH_SPI_RBF 0x10 |
| 43 | #define SH_SPI_PFONRD 0x08 |
| 44 | #define SH_SPI_SSDB 0x04 |
| 45 | #define SH_SPI_SSD 0x02 |
| 46 | #define SH_SPI_SSA 0x01 |
| 47 | |
| 48 | /* CR2 */ |
| 49 | #define SH_SPI_RSTF 0x80 |
| 50 | #define SH_SPI_LOOPBK 0x40 |
| 51 | #define SH_SPI_CPOL 0x20 |
| 52 | #define SH_SPI_CPHA 0x10 |
| 53 | #define SH_SPI_L1M0 0x08 |
| 54 | |
| 55 | /* CR3 */ |
| 56 | #define SH_SPI_MAX_BYTE 0xFF |
| 57 | |
| 58 | /* CR4 */ |
| 59 | #define SH_SPI_TBEI 0x80 |
| 60 | #define SH_SPI_TBFI 0x40 |
| 61 | #define SH_SPI_RBEI 0x20 |
| 62 | #define SH_SPI_RBFI 0x10 |
| 63 | #define SH_SPI_WPABRT 0x04 |
| 64 | #define SH_SPI_SSS 0x01 |
| 65 | |
| 66 | #define SH_SPI_FIFO_SIZE 32 |
| 67 | |
| 68 | struct sh_spi { |
| 69 | struct spi_slave slave; |
| 70 | struct sh_spi_regs *regs; |
| 71 | }; |
| 72 | |
| 73 | static inline struct sh_spi *to_sh_spi(struct spi_slave *slave) |
| 74 | { |
| 75 | return container_of(slave, struct sh_spi, slave); |
| 76 | } |
| 77 | |
| 78 | #endif |