| /* |
| * (C) Copyright 2012 SAMSUNG Electronics |
| * Padmavathi Venna <padma.v@samsung.com> |
| * |
| * SPDX-License-Identifier: GPL-2.0+ |
| */ |
| |
| #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 int swap_cfg; /* 0x28 */ |
| unsigned int fb_clk; /* 0x2c */ |
| unsigned char padding[0xffd0]; |
| }; |
| |
| #define EXYNOS_SPI_MAX_FREQ 50000000 |
| |
| #define SPI_TIMEOUT_MS 10 |
| #define SF_READ_DATA_CMD 0x3 |
| |
| /* 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) |
| |
| /* Swap config */ |
| #define SPI_TX_SWAP_EN (1 << 0) |
| #define SPI_TX_BYTE_SWAP (1 << 2) |
| #define SPI_TX_HWORD_SWAP (1 << 3) |
| #define SPI_TX_BYTE_SWAP (1 << 2) |
| #define SPI_RX_SWAP_EN (1 << 4) |
| #define SPI_RX_BYTE_SWAP (1 << 6) |
| #define SPI_RX_HWORD_SWAP (1 << 7) |
| |
| #endif /* __ASSEMBLY__ */ |
| #endif |
