76 lines
1.8 KiB
C
76 lines
1.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
|
|
/*
|
|
* (C) Copyright 2012 SAMSUNG Electronics
|
|
* Padmavathi Venna <padma.v@samsung.com>
|
|
*/
|
|
|
|
#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
|