/* * NVIDIA Tegra SPI-SLINK 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 _TEGRA_SLINK_H_ #define _TEGRA_SLINK_H_ #include struct slink_tegra { u32 command; /* SLINK_COMMAND_0 register */ u32 command2; /* SLINK_COMMAND2_0 reg */ u32 status; /* SLINK_STATUS_0 register */ u32 reserved; /* Reserved offset 0C */ u32 mas_data; /* SLINK_MAS_DATA_0 reg */ u32 slav_data; /* SLINK_SLAVE_DATA_0 reg */ u32 dma_ctl; /* SLINK_DMA_CTL_0 register */ u32 status2; /* SLINK_STATUS2_0 reg */ u32 rsvd[56]; /* 0x20 to 0xFF reserved */ u32 tx_fifo; /* SLINK_TX_FIFO_0 reg off 100h */ u32 rsvd2[31]; /* 0x104 to 0x17F reserved */ u32 rx_fifo; /* SLINK_RX_FIFO_0 reg off 180h */ }; /* COMMAND */ #define SLINK_CMD_ENB (1 << 31) #define SLINK_CMD_GO (1 << 30) #define SLINK_CMD_M_S (1 << 28) #define SLINK_CMD_CK_SDA (1 << 21) #define SLINK_CMD_CS_POL (1 << 13) #define SLINK_CMD_CS_VAL (1 << 12) #define SLINK_CMD_CS_SOFT (1 << 11) #define SLINK_CMD_BIT_LENGTH (1 << 4) #define SLINK_CMD_BIT_LENGTH_MASK 0x0000001F /* COMMAND2 */ #define SLINK_CMD2_TXEN (1 << 30) #define SLINK_CMD2_RXEN (1 << 31) #define SLINK_CMD2_SS_EN (1 << 18) #define SLINK_CMD2_SS_EN_SHIFT 18 #define SLINK_CMD2_SS_EN_MASK 0x000C0000 #define SLINK_CMD2_CS_ACTIVE_BETWEEN (1 << 17) /* STATUS */ #define SLINK_STAT_BSY (1 << 31) #define SLINK_STAT_RDY (1 << 30) #define SLINK_STAT_ERR (1 << 29) #define SLINK_STAT_RXF_FLUSH (1 << 27) #define SLINK_STAT_TXF_FLUSH (1 << 26) #define SLINK_STAT_RXF_OVF (1 << 25) #define SLINK_STAT_TXF_UNR (1 << 24) #define SLINK_STAT_RXF_EMPTY (1 << 23) #define SLINK_STAT_RXF_FULL (1 << 22) #define SLINK_STAT_TXF_EMPTY (1 << 21) #define SLINK_STAT_TXF_FULL (1 << 20) #define SLINK_STAT_TXF_OVF (1 << 19) #define SLINK_STAT_RXF_UNR (1 << 18) #define SLINK_STAT_CUR_BLKCNT (1 << 15) /* STATUS2 */ #define SLINK_STAT2_RXF_FULL_CNT (1 << 16) #define SLINK_STAT2_TXF_FULL_CNT (1 << 0) #define SPI_TIMEOUT 1000 #define TEGRA_SPI_MAX_FREQ 52000000 #endif /* _TEGRA_SLINK_H_ */