1 /* 2 * Copyright (C) 2012 3 * Altera Corporation <www.altera.com> 4 * 5 * SPDX-License-Identifier: GPL-2.0+ 6 */ 7 8 #ifndef __CADENCE_QSPI_H__ 9 #define __CADENCE_QSPI_H__ 10 11 #define CQSPI_IS_ADDR(cmd_len) (cmd_len > 1 ? 1 : 0) 12 13 #define CQSPI_NO_DECODER_MAX_CS 4 14 #define CQSPI_DECODER_MAX_CS 16 15 #define CQSPI_READ_CAPTURE_MAX_DELAY 16 16 17 struct cadence_spi_platdata { 18 unsigned int max_hz; 19 void *regbase; 20 void *ahbbase; 21 22 u32 page_size; 23 u32 block_size; 24 u32 tshsl_ns; 25 u32 tsd2d_ns; 26 u32 tchsh_ns; 27 u32 tslch_ns; 28 u32 sram_size; 29 }; 30 31 struct cadence_spi_priv { 32 void *regbase; 33 void *ahbbase; 34 size_t cmd_len; 35 u8 cmd_buf[32]; 36 size_t data_len; 37 38 int qspi_is_init; 39 unsigned int qspi_calibrated_hz; 40 unsigned int qspi_calibrated_cs; 41 unsigned int previous_hz; 42 }; 43 44 /* Functions call declaration */ 45 void cadence_qspi_apb_controller_init(struct cadence_spi_platdata *plat); 46 void cadence_qspi_apb_controller_enable(void *reg_base_addr); 47 void cadence_qspi_apb_controller_disable(void *reg_base_addr); 48 49 int cadence_qspi_apb_command_read(void *reg_base_addr, 50 unsigned int cmdlen, const u8 *cmdbuf, unsigned int rxlen, u8 *rxbuf); 51 int cadence_qspi_apb_command_write(void *reg_base_addr, 52 unsigned int cmdlen, const u8 *cmdbuf, 53 unsigned int txlen, const u8 *txbuf); 54 55 int cadence_qspi_apb_indirect_read_setup(struct cadence_spi_platdata *plat, 56 unsigned int cmdlen, const u8 *cmdbuf); 57 int cadence_qspi_apb_indirect_read_execute(struct cadence_spi_platdata *plat, 58 unsigned int rxlen, u8 *rxbuf); 59 int cadence_qspi_apb_indirect_write_setup(struct cadence_spi_platdata *plat, 60 unsigned int cmdlen, const u8 *cmdbuf); 61 int cadence_qspi_apb_indirect_write_execute(struct cadence_spi_platdata *plat, 62 unsigned int txlen, const u8 *txbuf); 63 64 void cadence_qspi_apb_chipselect(void *reg_base, 65 unsigned int chip_select, unsigned int decoder_enable); 66 void cadence_qspi_apb_set_clk_mode(void *reg_base_addr, 67 unsigned int clk_pol, unsigned int clk_pha); 68 void cadence_qspi_apb_config_baudrate_div(void *reg_base, 69 unsigned int ref_clk_hz, unsigned int sclk_hz); 70 void cadence_qspi_apb_delay(void *reg_base, 71 unsigned int ref_clk, unsigned int sclk_hz, 72 unsigned int tshsl_ns, unsigned int tsd2d_ns, 73 unsigned int tchsh_ns, unsigned int tslch_ns); 74 void cadence_qspi_apb_enter_xip(void *reg_base, char xip_dummy); 75 void cadence_qspi_apb_readdata_capture(void *reg_base, 76 unsigned int bypass, unsigned int delay); 77 78 #endif /* __CADENCE_QSPI_H__ */ 79