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gerrit.devboardsforandroid.linaro.org / platform / external / u-boot / fddf876a8f56ff53d1354387ebf7fd3997189349 / . / drivers / spi / cadence_qspi.h
blob: 99dee75bbdcb8386dc92f56a79fec4c62ff3a62b [file] [log] [blame]
Tom Rini83d290c2018-05-06 17:58:06 -0400[diff] [blame]1/* SPDX-License-Identifier: GPL-2.0+ */
Stefan Roese10e8bf82014-11-07 12:37:49 +0100[diff] [blame]2/*
3 * Copyright (C) 2012
4 * Altera Corporation <www.altera.com>
Stefan Roese10e8bf82014-11-07 12:37:49 +0100[diff] [blame]5 */
6
7#ifndef __CADENCE_QSPI_H__
8#define __CADENCE_QSPI_H__
9
Simon Goldschmidtac7e14a2019-03-01 20:12:35 +0100[diff] [blame]10#include <reset.h>
11
Stefan Roese10e8bf82014-11-07 12:37:49 +0100[diff] [blame]12#define CQSPI_IS_ADDR(cmd_len) (cmd_len > 1 ? 1 : 0)
13
14#define CQSPI_NO_DECODER_MAX_CS 4
15#define CQSPI_DECODER_MAX_CS 16
16#define CQSPI_READ_CAPTURE_MAX_DELAY 16
17
18struct cadence_spi_platdata {
Simon Goldschmidt64c7c8c2019-11-20 22:27:31 +0100[diff] [blame]19 unsigned int ref_clk_hz;
Stefan Roese10e8bf82014-11-07 12:37:49 +0100[diff] [blame]20 unsigned int max_hz;
21 void *regbase;
22 void *ahbbase;
Jason Rush15a70a52018-01-23 17:13:09 -0600[diff] [blame]23 bool is_decoded_cs;
24 u32 fifo_depth;
25 u32 fifo_width;
26 u32 trigger_address;
Stefan Roese10e8bf82014-11-07 12:37:49 +0100[diff] [blame]27
Jason Rush15a70a52018-01-23 17:13:09 -0600[diff] [blame]28 /* Flash parameters */
Stefan Roese10e8bf82014-11-07 12:37:49 +0100[diff] [blame]29 u32 page_size;
30 u32 block_size;
31 u32 tshsl_ns;
32 u32 tsd2d_ns;
33 u32 tchsh_ns;
34 u32 tslch_ns;
Stefan Roese10e8bf82014-11-07 12:37:49 +0100[diff] [blame]35};
36
37struct cadence_spi_priv {
38 void *regbase;
39 void *ahbbase;
40 size_t cmd_len;
41 u8 cmd_buf[32];
42 size_t data_len;
43
44 int qspi_is_init;
45 unsigned int qspi_calibrated_hz;
46 unsigned int qspi_calibrated_cs;
Chin Liang See98fbd712015-10-17 08:31:55 -0500[diff] [blame]47 unsigned int previous_hz;
Simon Goldschmidtac7e14a2019-03-01 20:12:35 +0100[diff] [blame]48
49 struct reset_ctl_bulk resets;
Stefan Roese10e8bf82014-11-07 12:37:49 +0100[diff] [blame]50};
51
52/* Functions call declaration */
53void cadence_qspi_apb_controller_init(struct cadence_spi_platdata *plat);
54void cadence_qspi_apb_controller_enable(void *reg_base_addr);
55void cadence_qspi_apb_controller_disable(void *reg_base_addr);
56
57int cadence_qspi_apb_command_read(void *reg_base_addr,
58 unsigned int cmdlen, const u8 *cmdbuf, unsigned int rxlen, u8 *rxbuf);
59int cadence_qspi_apb_command_write(void *reg_base_addr,
60 unsigned int cmdlen, const u8 *cmdbuf,
61 unsigned int txlen, const u8 *txbuf);
62
63int cadence_qspi_apb_indirect_read_setup(struct cadence_spi_platdata *plat,
Vignesh R2372e142016-07-06 10:20:56 +0530[diff] [blame]64 unsigned int cmdlen, unsigned int rx_width, const u8 *cmdbuf);
Stefan Roese10e8bf82014-11-07 12:37:49 +0100[diff] [blame]65int cadence_qspi_apb_indirect_read_execute(struct cadence_spi_platdata *plat,
66 unsigned int rxlen, u8 *rxbuf);
67int cadence_qspi_apb_indirect_write_setup(struct cadence_spi_platdata *plat,
Ley Foon Tan7eece322019-02-27 13:36:14 +0800[diff] [blame]68 unsigned int cmdlen, unsigned int tx_width, const u8 *cmdbuf);
Stefan Roese10e8bf82014-11-07 12:37:49 +0100[diff] [blame]69int cadence_qspi_apb_indirect_write_execute(struct cadence_spi_platdata *plat,
70 unsigned int txlen, const u8 *txbuf);
71
72void cadence_qspi_apb_chipselect(void *reg_base,
73 unsigned int chip_select, unsigned int decoder_enable);
Phil Edworthy7d403f22016-11-29 12:58:31 +0000[diff] [blame]74void cadence_qspi_apb_set_clk_mode(void *reg_base, uint mode);
Stefan Roese10e8bf82014-11-07 12:37:49 +0100[diff] [blame]75void cadence_qspi_apb_config_baudrate_div(void *reg_base,
76 unsigned int ref_clk_hz, unsigned int sclk_hz);
77void cadence_qspi_apb_delay(void *reg_base,
78 unsigned int ref_clk, unsigned int sclk_hz,
79 unsigned int tshsl_ns, unsigned int tsd2d_ns,
80 unsigned int tchsh_ns, unsigned int tslch_ns);
81void cadence_qspi_apb_enter_xip(void *reg_base, char xip_dummy);
82void cadence_qspi_apb_readdata_capture(void *reg_base,
83 unsigned int bypass, unsigned int delay);
84
85#endif /* __CADENCE_QSPI_H__ */