| /* SPDX-License-Identifier: (GPL-2.0+ OR MIT) */ |
| /* |
| * Copyright (c) 2019 Amlogic, Inc. All rights reserved. |
| */ |
| |
| #ifndef __AML_SPI_H_ |
| #define __AML_SPI_H_ |
| |
| enum { |
| DMA_TRIG_NORMAL = 0, |
| DMA_TRIG_VSYNC, |
| DMA_TRIG_LINE_N, |
| }; |
| |
| #define CONTROLLER_SPICC 1 |
| #define CONTROLLER_SPISG 2 |
| |
| #define CAP_DMA_TRIG_VSYNC BIT(0) |
| #define CAP_DMA_TRIG_LINE_N BIT(1) |
| #define CAP_DMA_TRIG_PWM_VS BIT(2) |
| #define CAP_TRIG_DELAY BIT(3) |
| |
| struct spicc_controller_data { |
| unsigned int controller_version; |
| unsigned int controller_capabilities; |
| unsigned ccxfer_en:1; |
| unsigned timing_en:1; |
| unsigned use_ctrl_cs:1; |
| unsigned ss_leading_gap:4; |
| unsigned ss_trailing_gap:4; |
| unsigned tx_tuning:4; |
| unsigned rx_tuning:4; |
| unsigned dummy_ctl:1; |
| unsigned miso_latency_en:1; |
| int miso_latency; // in ns, signed |
| void (*dirspi_start)(struct spi_device *spi); |
| void (*dirspi_stop)(struct spi_device *spi); |
| int (*dirspi_async)(struct spi_device *spi, |
| u8 *tx_buf, |
| u8 *rx_buf, |
| int len, |
| void (*complete)(void *context), |
| void *context); |
| int (*dirspi_sync)(struct spi_device *spi, |
| u8 *tx_buf, |
| u8 *rx_buf, |
| int len); |
| int (*dirspi_dma_trig)(struct spi_device *spi, |
| dma_addr_t tx_dma, |
| dma_addr_t rx_dma, |
| int len, |
| u8 src); |
| int (*dirspi_dma_trig_start)(struct spi_device *spi); |
| int (*dirspi_dma_trig_stop)(struct spi_device *spi); |
| }; |
| |
| struct spicc_transfer { |
| struct spi_transfer xfer; |
| unsigned dc_level:1; |
| #define DC_LEVEL_LOW 0 |
| #define DC_LEVEL_HIGH 1 |
| unsigned read_turn_around:2; |
| unsigned dc_mode:2; |
| #define DC_MODE_NONE 0 |
| #define DC_MODE_PIN 1 |
| #define DC_MODE_9BIT 2 |
| void *tx_ccsg; |
| void *rx_ccsg; |
| int tx_ccsg_len; |
| int rx_ccsg_len; |
| }; |
| |
| #endif |
