/* * (C) Copyright 2012 SAMSUNG Electronics * Padmavathi Venna * * 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; either version 2 of the License, or * (at your option) any later version. * * 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 __ASM_ARCH_EXYNOS_COMMON_SPI_H_ #define __ASM_ARCH_EXYNOS_COMMON_SPI_H_ #ifndef __ASSEMBLY__ /* SPI peripheral register map; padded to 64KB */ struct exynos_spi { unsigned int ch_cfg; /* 0x00 */ unsigned char reserved0[4]; unsigned int mode_cfg; /* 0x08 */ unsigned int cs_reg; /* 0x0c */ unsigned char reserved1[4]; unsigned int spi_sts; /* 0x14 */ unsigned int tx_data; /* 0x18 */ unsigned int rx_data; /* 0x1c */ unsigned int pkt_cnt; /* 0x20 */ unsigned char reserved2[4]; unsigned char reserved3[4]; unsigned int fb_clk; /* 0x2c */ unsigned char padding[0xffd0]; }; #define EXYNOS_SPI_MAX_FREQ 50000000 #define SPI_TIMEOUT_MS 10 /* SPI_CHCFG */ #define SPI_CH_HS_EN (1 << 6) #define SPI_CH_RST (1 << 5) #define SPI_SLAVE_MODE (1 << 4) #define SPI_CH_CPOL_L (1 << 3) #define SPI_CH_CPHA_B (1 << 2) #define SPI_RX_CH_ON (1 << 1) #define SPI_TX_CH_ON (1 << 0) /* SPI_MODECFG */ #define SPI_MODE_CH_WIDTH_WORD (0x2 << 29) #define SPI_MODE_BUS_WIDTH_WORD (0x2 << 17) /* SPI_CSREG */ #define SPI_SLAVE_SIG_INACT (1 << 0) /* SPI_STS */ #define SPI_ST_TX_DONE (1 << 25) #define SPI_FIFO_LVL_MASK 0x1ff #define SPI_TX_LVL_OFFSET 6 #define SPI_RX_LVL_OFFSET 15 /* Feedback Delay */ #define SPI_CLK_BYPASS (0 << 0) #define SPI_FB_DELAY_90 (1 << 0) #define SPI_FB_DELAY_180 (2 << 0) #define SPI_FB_DELAY_270 (3 << 0) /* Packet Count */ #define SPI_PACKET_CNT_EN (1 << 16) #endif /* __ASSEMBLY__ */ #endif