nsekar@codeaurora.org has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/32058
Change subject: qcs405: Add SPI driver support ......................................................................
qcs405: Add SPI driver support
Enable SPI driver support in coreboot.
Change-Id: I813ba0b5cc8344c463c3e41ff6db80bc0d8ebd96 Signed-off-by: Prudhvi Yarlagadda pyarlaga@codeaurora.org Signed-off-by: Nitheesh Sekar nsekar@codeaurora.org --- M src/soc/qualcomm/qcs405/Kconfig A src/soc/qualcomm/qcs405/include/soc/qup.h A src/soc/qualcomm/qcs405/include/soc/spi.h M src/soc/qualcomm/qcs405/spi.c 4 files changed, 1,194 insertions(+), 17 deletions(-)
git pull ssh://review.coreboot.org:29418/coreboot refs/changes/58/32058/1
diff --git a/src/soc/qualcomm/qcs405/Kconfig b/src/soc/qualcomm/qcs405/Kconfig index 3e8c1ba..9bd95fe 100644 --- a/src/soc/qualcomm/qcs405/Kconfig +++ b/src/soc/qualcomm/qcs405/Kconfig @@ -18,4 +18,13 @@ select VBOOT_SEPARATE_VERSTAGE select VBOOT_RETURN_FROM_VERSTAGE select VBOOT_STARTS_IN_BOOTBLOCK + +config QCS405_BLSP_SPI + bool + default y + prompt "Build Flash Using SPI-NOR" + +config BOOT_DEVICE_SPI_FLASH_BUS + int + default 5 endif diff --git a/src/soc/qualcomm/qcs405/include/soc/qup.h b/src/soc/qualcomm/qcs405/include/soc/qup.h new file mode 100644 index 0000000..f8f9c75 --- /dev/null +++ b/src/soc/qualcomm/qcs405/include/soc/qup.h @@ -0,0 +1,232 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2018 - 2019 The Linux Foundation. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials provided + * with the distribution. + * * Neither the name of The Linux Foundation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS + * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR + * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE + * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN + * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef __QUP_H__ +#define __QUP_H__ + + +/* QUP block registers */ +#define QUP_CONFIG 0x000 +#define QUP_STATE 0x004 +#define QUP_IO_MODES 0x008 +#define QUP_SW_RESET 0x00C +#define QUP_TRANSFER_CANCEL 0x014 +#define QUP_OPERATIONAL 0x018 +#define QUP_ERROR_FLAGS 0x01C +#define QUP_ERROR_FLAGS_EN 0x020 +#define QUP_TEST_CTRL 0x024 +#define QUP_OPERATIONAL_MASK 0x028 +#define QUP_HW_VERSION 0x030 +#define QUP_MX_OUTPUT_COUNT 0x100 +#define QUP_MX_OUTPUT_CNT_CURRENT 0x104 +#define QUP_OUTPUT_DEBUG 0x108 +#define QUP_OUTPUT_FIFO_WORD_CNT 0x10C +#define QUP_OUTPUT_FIFO 0x110 +#define QUP_OUTPUT_FIFO_SIZE 64 /* bytes */ +#define QUP_MX_WRITE_COUNT 0x150 +#define QUP_MX_WRITE_CNT_CURRENT 0x154 +#define QUP_MX_INPUT_COUNT 0x200 +#define QUP_MX_INPUT_CNT_CURRENT 0x204 +#define QUP_MX_READ_COUNT 0x208 +#define QUP_MX_READ_CNT_CURRENT 0x20C +#define QUP_INPUT_DEBUG 0x210 +#define QUP_INPUT_FIFO_WORD_CNT 0x214 +#define QUP_INPUT_FIFO 0x218 +#define QUP_INPUT_FIFO_SIZE 64 /* bytes */ +#define QUP_I2C_MASTER_CLK_CTL 0x400 +#define QUP_I2C_MASTER_STATUS 0x404 +#define QUP_I2C_MASTER_CONFIG 0x408 +#define QUP_I2C_MASTER_BUS_CLEAR 0x40C +#define QUP_I2C_MASTER_LOCAL_ID 0x410 +#define QUP_I2C_MASTER_COMMAND 0x414 + +#define OUTPUT_FIFO_FULL (1<<6) +#define INPUT_FIFO_NOT_EMPTY (1<<5) +#define OUTPUT_FIFO_NOT_EMPTY (1<<4) +#define MAX_OUTPUT_DONE_FLAG (1<<10) +#define MAX_INPUT_DONE_FLAG (1<<11) +#define INPUT_SERVICE_FLAG (1<<9) +#define OUTPUT_SERVICE_FLAG (1<<8) +#define QUP_UNPACK_EN (1<<14) +#define QUP_PACK_EN (1<<15) +#define QUP_OUTPUT_BIT_SHIFT_EN (1<<16) + +#define QUP_MODE_MASK (0x03) +#define QUP_OUTPUT_MODE_SHFT (10) +#define QUP_INPUT_MODE_SHFT (12) + +#define QUP_FS_DIVIDER_MASK (0xFF) + +#define QUP_APP_CLK_ON_EN (1 << 12) +#define QUP_CORE_CLK_ON_EN (1 << 13) +#define QUP_MINI_CORE_PROTO_SHFT (8) +#define QUP_MINI_CORE_PROTO_MASK (0x0F) + +/* Mini-core states */ +#define QUP_STATE_RESET 0x0 +#define QUP_STATE_RUN 0x1 +#define QUP_STATE_PAUSE 0x3 +#define QUP_STATE_VALID (1<<2) +#define QUP_STATE_MASK 0x3 +#define QUP_STATE_VALID_MASK (1<<2) + +/* Tags for output FIFO */ +#define QUP_I2C_1CLK_NOOP_SEQ 0x1 /*MSB 8-bit NOP, LSB 8-bits 1 clk.*/ +#define QUP_I2C_START_SEQ (0x1 << 8) +#define QUP_I2C_DATA_SEQ (0x2 << 8) +#define QUP_I2C_STOP_SEQ (0x3 << 8) +#define QUP_I2C_RECV_SEQ (0x4 << 8) + +/* Tags for input FIFO */ +#define QUP_I2C_MIDATA_SEQ (0x5 << 8) +#define QUP_I2C_MISTOP_SEQ (0x6 << 8) +#define QUP_I2C_MINACK_SEQ (0x7 << 8) + +#define QUP_I2C_ADDR(x) ((x & 0xFF) << 1) +#define QUP_I2C_DATA(x) (x & 0xFF) +#define QUP_I2C_MI_TAG(x) (x & 0xFF00) +#define QUP_I2C_SLAVE_READ (0x1) + +/*Bit vals for I2C_MASTER_CLK_CTL register */ +#define QUP_HS_DIVIDER_SHFT (8) +#define QUP_DIVIDER_MIN_VAL (0x3) + +/* Bit masks for I2C_MASTER_STATUS register */ +#define QUP_I2C_INVALID_READ_SEQ (1 << 25) +#define QUP_I2C_INVALID_READ_ADDR (1 << 24) +#define QUP_I2C_INVALID_TAG (1 << 23) +#define QUP_I2C_FAILED_MASK (0x3 << 6) +#define QUP_I2C_INVALID_WRITE (1 << 5) +#define QUP_I2C_ARB_LOST (1 << 4) +#define QUP_I2C_PACKET_NACK (1 << 3) +#define QUP_I2C_BUS_ERROR (1 << 2) + +typedef enum { + QUP_SUCCESS = 0, + QUP_ERR_BAD_PARAM, + QUP_ERR_STATE_SET, + QUP_ERR_TIMEOUT, + QUP_ERR_UNSUPPORTED, + QUP_ERR_I2C_FAILED, + QUP_ERR_I2C_ARB_LOST, + QUP_ERR_I2C_BUS_ERROR, + QUP_ERR_I2C_INVALID_SLAVE_ADDR, + QUP_ERR_XFER_FAIL, + QUP_ERR_I2C_NACK, + QUP_ERR_I2C_INVALID_WRITE, + QUP_ERR_I2C_INVALID_TAG, + QUP_ERR_UNDEFINED, +} qup_return_t; + +typedef enum { + QUP_MINICORE_SPI = 1, + QUP_MINICORE_I2C_MASTER, + QUP_MINICORE_I2C_SLAVE +} qup_protocol_t; + +typedef enum { + QUP_MODE_FIFO = 0, + QUP_MODE_BLOCK, + QUP_MODE_DATAMOVER, +} qup_mode_t; + +typedef struct { + qup_protocol_t protocol; + unsigned int clk_frequency; + unsigned int src_frequency; + qup_mode_t mode; + unsigned int initialized; +} qup_config_t; + +typedef struct { + qup_protocol_t protocol; + union { + struct { + uint8_t addr; + uint8_t *data; + unsigned int data_len; + } iic; + struct { + void *in; + void *out; + unsigned int size; + } spi; + } p; +} qup_data_t; + +/* + * Initialize BLSP QUP block for FIFO I2C transfers. + * id[IN]: BLSP for which QUP is to be initialized. + * config_ptr[IN]: configurations parameters for the QUP. + * + * return: QUP_SUCCESS, if initialization succeeds. + */ +qup_return_t qup_init(blsp_qup_id_t id, const qup_config_t *config_ptr); + +/* + * Set QUP state to run, pause, reset. + * id[IN]: BLSP block for which QUP state is to be set. + * state[IN]: New state to transition to. + * + * return: QUP_SUCCESS, if state transition succeeds. + */ +qup_return_t qup_set_state(blsp_qup_id_t id, uint32_t state); + +/* + * Reset the status bits set during an i2c transfer. + * id[IN]: BLSP block for which i2c status bits are to be cleared. + * + * return: QUP_SUCCESS, if status bits are cleared successfully. + */ +qup_return_t qup_reset_i2c_master_status(blsp_qup_id_t id); + +/* + * Send data to the peripheral on the bus. + * id[IN]: BLSP block for which data is to be sent. + * p_tx_obj[IN]: Data to be sent to the slave on the bus. + * stop_seq[IN]: When set to non-zero QUP engine sends i2c stop sequnce. + * + * return: QUP_SUCCESS, when data is sent successfully to the peripheral. + */ +qup_return_t qup_send_data(blsp_qup_id_t id, qup_data_t *p_tx_obj, + uint8_t stop_seq); + +/* + * Receive data from peripheral on the bus. + * id[IN]: BLSP block from which data is to be received. + * p_tx_obj[IN]: length of data to be received, slave address. + * [OUT]: buffer filled with data from slave. + * + * return: QUP_SUCCESS, when data is received successfully. + */ +qup_return_t qup_recv_data(blsp_qup_id_t id, qup_data_t *p_tx_obj); + +#endif //__QUP_H__ diff --git a/src/soc/qualcomm/qcs405/include/soc/spi.h b/src/soc/qualcomm/qcs405/include/soc/spi.h new file mode 100644 index 0000000..e1bdadd --- /dev/null +++ b/src/soc/qualcomm/qcs405/include/soc/spi.h @@ -0,0 +1,210 @@ +/* + * Register definitions for the IPQ BLSP SPI Controller + * + * Copyright (c) 2012-2019 The Linux Foundation. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials provided + * with the distribution. + * * Neither the name of The Linux Foundation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS + * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR + * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE + * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN + * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef _IPQ40XX_SPI_H_ +#define _IPQ40XX_SPI_H_ + +#include <soc/iomap.h> +#include <soc/qup.h> +#include <spi-generic.h> + +#define BLSP0_QUP_REG_BASE ((void *)0x78b5000u) +#define BLSP4_QUP_REG_BASE ((void *)0x78b9000u) +#define BLSP5_QUP_REG_BASE ((void *)0x7af5000u) + +#define BLSP0_SPI_CONFIG_REG (BLSP0_QUP_REG_BASE + 0x00000300) +#define BLSP4_SPI_CONFIG_REG (BLSP4_QUP_REG_BASE + 0x00000300) +#define BLSP5_SPI_CONFIG_REG (BLSP5_QUP_REG_BASE + 0x00000300) + +#define BLSP0_SPI_IO_CONTROL_REG (BLSP0_QUP_REG_BASE + 0x00000304) +#define BLSP4_SPI_IO_CONTROL_REG (BLSP4_QUP_REG_BASE + 0x00000304) +#define BLSP5_SPI_IO_CONTROL_REG (BLSP5_QUP_REG_BASE + 0x00000304) + +#define BLSP0_SPI_ERROR_FLAGS_REG (BLSP0_QUP_REG_BASE + 0x00000308) +#define BLSP4_SPI_ERROR_FLAGS_REG (BLSP4_QUP_REG_BASE + 0x00000308) +#define BLSP5_SPI_ERROR_FLAGS_REG (BLSP5_QUP_REG_BASE + 0x00000308) + +#define BLSP0_SPI_DEASSERT_WAIT_REG (BLSP0_QUP_REG_BASE + 0x00000310) +#define BLSP4_SPI_DEASSERT_WAIT_REG (BLSP4_QUP_REG_BASE + 0x00000310) +#define BLSP5_SPI_DEASSERT_WAIT_REG (BLSP5_QUP_REG_BASE + 0x00000310) +#define BLSP0_SPI_ERROR_FLAGS_EN_REG (BLSP0_QUP_REG_BASE + 0x0000030c) +#define BLSP4_SPI_ERROR_FLAGS_EN_REG (BLSP4_QUP_REG_BASE + 0x0000030c) +#define BLSP5_SPI_ERROR_FLAGS_EN_REG (BLSP5_QUP_REG_BASE + 0x0000030c) + +#define BLSP0_QUP_CONFIG_REG (BLSP0_QUP_REG_BASE + 0x00000000) +#define BLSP4_QUP_CONFIG_REG (BLSP4_QUP_REG_BASE + 0x00000000) +#define BLSP5_QUP_CONFIG_REG (BLSP5_QUP_REG_BASE + 0x00000000) + +#define BLSP0_QUP_ERROR_FLAGS_REG (BLSP0_QUP_REG_BASE + 0x0000001c) +#define BLSP4_QUP_ERROR_FLAGS_REG (BLSP4_QUP_REG_BASE + 0x0000001c) +#define BLSP5_QUP_ERROR_FLAGS_REG (BLSP5_QUP_REG_BASE + 0x0000001c) + +#define BLSP0_QUP_ERROR_FLAGS_EN_REG (BLSP0_QUP_REG_BASE + 0x00000020) +#define BLSP4_QUP_ERROR_FLAGS_EN_REG (BLSP4_QUP_REG_BASE + 0x00000020) +#define BLSP5_QUP_ERROR_FLAGS_EN_REG (BLSP5_QUP_REG_BASE + 0x00000020) + +#define BLSP0_QUP_OPERATIONAL_MASK (BLSP0_QUP_REG_BASE + 0x00000028) +#define BLSP4_QUP_OPERATIONAL_MASK (BLSP4_QUP_REG_BASE + 0x00000028) +#define BLSP5_QUP_OPERATIONAL_MASK (BLSP5_QUP_REG_BASE + 0x00000028) + +#define BLSP0_QUP_OPERATIONAL_REG (BLSP0_QUP_REG_BASE + 0x00000018) +#define BLSP4_QUP_OPERATIONAL_REG (BLSP4_QUP_REG_BASE + 0x00000018) +#define BLSP5_QUP_OPERATIONAL_REG (BLSP5_QUP_REG_BASE + 0x00000018) + +#define BLSP0_QUP_IO_MODES_REG (BLSP0_QUP_REG_BASE + 0x00000008) +#define BLSP4_QUP_IO_MODES_REG (BLSP4_QUP_REG_BASE + 0x00000008) +#define BLSP5_QUP_IO_MODES_REG (BLSP5_QUP_REG_BASE + 0x00000008) + +#define BLSP0_QUP_STATE_REG (BLSP0_QUP_REG_BASE + 0x00000004) +#define BLSP4_QUP_STATE_REG (BLSP4_QUP_REG_BASE + 0x00000004) +#define BLSP5_QUP_STATE_REG (BLSP5_QUP_REG_BASE + 0x00000004) + +#define BLSP0_QUP_INPUT_FIFOc_REG(c) \ + (BLSP0_QUP_REG_BASE + 0x00000218 + 4 * (c)) +#define BLSP4_QUP_INPUT_FIFOc_REG(c) \ + (BLSP4_QUP_REG_BASE + 0x00000218 + 4 * (c)) +#define BLSP5_QUP_INPUT_FIFOc_REG(c) \ + (BLSP5_QUP_REG_BASE + 0x00000218 + 4 * (c)) + +#define BLSP0_QUP_OUTPUT_FIFOc_REG(c) \ + (BLSP0_QUP_REG_BASE + 0x00000110 + 4 * (c)) +#define BLSP4_QUP_OUTPUT_FIFOc_REG(c) \ + (BLSP4_QUP_REG_BASE + 0x00000110 + 4 * (c)) +#define BLSP5_QUP_OUTPUT_FIFOc_REG(c) \ + (BLSP5_QUP_REG_BASE + 0x00000110 + 4 * (c)) + +#define BLSP0_QUP_MX_INPUT_COUNT_REG (BLSP0_QUP_REG_BASE + 0x00000200) +#define BLSP4_QUP_MX_INPUT_COUNT_REG (BLSP4_QUP_REG_BASE + 0x00000200) +#define BLSP5_QUP_MX_INPUT_COUNT_REG (BLSP5_QUP_REG_BASE + 0x00000200) + +#define BLSP0_QUP_MX_OUTPUT_COUNT_REG (BLSP0_QUP_REG_BASE + 0x00000100) +#define BLSP4_QUP_MX_OUTPUT_COUNT_REG (BLSP4_QUP_REG_BASE + 0x00000100) +#define BLSP5_QUP_MX_OUTPUT_COUNT_REG (BLSP5_QUP_REG_BASE + 0x00000100) + +#define BLSP0_QUP_SW_RESET_REG (BLSP0_QUP_REG_BASE + 0x0000000c) +#define BLSP4_QUP_SW_RESET_REG (BLSP4_QUP_REG_BASE + 0x0000000c) +#define BLSP5_QUP_SW_RESET_REG (BLSP5_QUP_REG_BASE + 0x0000000c) + +#define QUP_CONFIG_MINI_CORE_MSK (0x0F << 8) +#define QUP_CONFIG_MINI_CORE_SPI (1 << 8) +#define QUP_CONF_INPUT_MSK (1 << 7) +#define QUP_CONF_INPUT_ENA (0 << 7) +#define QUP_CONF_NO_INPUT (1 << 7) +#define QUP_CONF_OUTPUT_MSK (1 << 6) +#define QUP_CONF_OUTPUT_ENA (0 << 6) +#define QUP_CONF_NO_OUTPUT (1 << 6) +#define QUP_CONF_N_MASK 0x1F +#define QUP_CONF_N_SPI_8_BIT_WORD 0x07 + +#define SPI_CONFIG_INPUT_FIRST (1 << 9) +#define SPI_CONFIG_INPUT_FIRST_BACK (0 << 9) +#define SPI_CONFIG_LOOP_BACK_MSK (1 << 8) +#define SPI_CONFIG_NO_LOOP_BACK (0 << 8) +#define SPI_CONFIG_NO_SLAVE_OPER_MSK (1 << 5) +#define SPI_CONFIG_NO_SLAVE_OPER (0 << 5) + +#define SPI_IO_CTRL_CLK_ALWAYS_ON (0 << 9) +#define SPI_IO_CTRL_MX_CS_MODE (1 << 8) +#define SPI_IO_CTRL_NO_TRI_STATE (1 << 0) +#define SPI_IO_CTRL_FORCE_CS_MSK (1 << 11) +#define SPI_IO_CTRL_FORCE_CS_EN (1 << 11) +#define SPI_IO_CTRL_FORCE_CS_DIS (0 << 11) +#define SPI_IO_CTRL_CLOCK_IDLE_HIGH (1 << 10) + +#define QUP_IO_MODES_OUTPUT_BIT_SHIFT_MSK (1 << 16) +#define QUP_IO_MODES_OUTPUT_BIT_SHIFT_EN (1 << 16) +#define QUP_IO_MODES_INPUT_MODE_MSK (0x03 << 12) +#define QUP_IO_MODES_INPUT_BLOCK_MODE (0x01 << 12) +#define QUP_IO_MODES_OUTPUT_MODE_MSK (0x03 << 10) +#define QUP_IO_MODES_OUTPUT_BLOCK_MODE (0x01 << 10) + +#define SPI_INPUT_BLOCK_SIZE 4 +#define SPI_OUTPUT_BLOCK_SIZE 4 + +#define MAX_COUNT_SIZE 0xffff + +#define SPI_CORE_RESET 0 +#define SPI_CORE_RUNNING 1 +#define SPI_MODE0 0 +#define SPI_MODE1 1 +#define SPI_MODE2 2 +#define SPI_MODE3 3 +#define BLSP0_SPI 0 +#define BLSP4_SPI 4 +#define BLSP5_SPI 5 + +struct blsp_spi { + void *spi_config; + void *io_control; + void *error_flags; + void *error_flags_en; + void *qup_config; + void *qup_error_flags; + void *qup_error_flags_en; + void *qup_operational; + void *qup_io_modes; + void *qup_state; + void *qup_input_fifo; + void *qup_output_fifo; + void *qup_mx_input_count; + void *qup_mx_output_count; + void *qup_sw_reset; + void *qup_ns_reg; + void *qup_md_reg; + void *qup_op_mask; + void *qup_deassert_wait; +}; + + +#define SUCCESS 0 + +#define DUMMY_DATA_VAL 0 +#define TIMEOUT_CNT 100 + +#define ETIMEDOUT -10 +#define EINVAL -11 +#define EIO -12 + +/* MX_INPUT_COUNT and MX_OUTPUT_COUNT are 16-bits. Zero has a special meaning + * (count function disabled) and does not hold significance in the count. */ +#define MAX_PACKET_COUNT ((64 * KiB) - 1) + + +struct ipq_spi_slave { + struct spi_slave slave; + const struct blsp_spi *regs; + unsigned int mode; + unsigned int initialized; + unsigned long freq; + int allocated; +}; + +#endif /* _IPQ40XX_SPI_H_ */ diff --git a/src/soc/qualcomm/qcs405/spi.c b/src/soc/qualcomm/qcs405/spi.c index c04b15d..38993b6 100644 --- a/src/soc/qualcomm/qcs405/spi.c +++ b/src/soc/qualcomm/qcs405/spi.c @@ -1,49 +1,775 @@ /* - * This file is part of the coreboot project. + * Copyright (c) 2012-2019 The Linux Foundation. All rights reserved. * - * Copyright (C) 2018, The Linux Foundation. All rights reserved. + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials provided + * with the distribution. + * * Neither the name of The Linux Foundation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 and - * only version 2 as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. + * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS + * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR + * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE + * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN + * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
-#include <spi-generic.h> +#include <device/mmio.h> +#include <console/console.h> +#include <delay.h> +#include <gpio.h> +#include <soc/iomap.h> +#include <soc/spi.h> +#include <stdlib.h> +#include <string.h> #include <spi_flash.h> +#include <timer.h> + +static const struct blsp_spi spi_reg[] = { + /* BLSP0 registers for SPI interface */ + { + BLSP0_SPI_CONFIG_REG, + BLSP0_SPI_IO_CONTROL_REG, + BLSP0_SPI_ERROR_FLAGS_REG, + BLSP0_SPI_ERROR_FLAGS_EN_REG, + BLSP0_QUP_CONFIG_REG, + BLSP0_QUP_ERROR_FLAGS_REG, + BLSP0_QUP_ERROR_FLAGS_EN_REG, + BLSP0_QUP_OPERATIONAL_REG, + BLSP0_QUP_IO_MODES_REG, + BLSP0_QUP_STATE_REG, + BLSP0_QUP_INPUT_FIFOc_REG(0), + BLSP0_QUP_OUTPUT_FIFOc_REG(0), + BLSP0_QUP_MX_INPUT_COUNT_REG, + BLSP0_QUP_MX_OUTPUT_COUNT_REG, + BLSP0_QUP_SW_RESET_REG, + 0, + 0, + BLSP0_QUP_OPERATIONAL_MASK, + BLSP0_SPI_DEASSERT_WAIT_REG, + }, + {0}, {0}, {0}, + /* BLSP4 registers for SPI interface */ + { + BLSP4_SPI_CONFIG_REG, + BLSP4_SPI_IO_CONTROL_REG, + BLSP4_SPI_ERROR_FLAGS_REG, + BLSP4_SPI_ERROR_FLAGS_EN_REG, + BLSP4_QUP_CONFIG_REG, + BLSP4_QUP_ERROR_FLAGS_REG, + BLSP4_QUP_ERROR_FLAGS_EN_REG, + BLSP4_QUP_OPERATIONAL_REG, + BLSP4_QUP_IO_MODES_REG, + BLSP4_QUP_STATE_REG, + BLSP4_QUP_INPUT_FIFOc_REG(0), + BLSP4_QUP_OUTPUT_FIFOc_REG(0), + BLSP4_QUP_MX_INPUT_COUNT_REG, + BLSP4_QUP_MX_OUTPUT_COUNT_REG, + BLSP4_QUP_SW_RESET_REG, + 0, + 0, + BLSP4_QUP_OPERATIONAL_MASK, + BLSP4_SPI_DEASSERT_WAIT_REG, + }, + /* BLSP5 registers for SPI interface */ + { + BLSP5_SPI_CONFIG_REG, + BLSP5_SPI_IO_CONTROL_REG, + BLSP5_SPI_ERROR_FLAGS_REG, + BLSP5_SPI_ERROR_FLAGS_EN_REG, + BLSP5_QUP_CONFIG_REG, + BLSP5_QUP_ERROR_FLAGS_REG, + BLSP5_QUP_ERROR_FLAGS_EN_REG, + BLSP5_QUP_OPERATIONAL_REG, + BLSP5_QUP_IO_MODES_REG, + BLSP5_QUP_STATE_REG, + BLSP5_QUP_INPUT_FIFOc_REG(0), + BLSP5_QUP_OUTPUT_FIFOc_REG(0), + BLSP5_QUP_MX_INPUT_COUNT_REG, + BLSP5_QUP_MX_OUTPUT_COUNT_REG, + BLSP5_QUP_SW_RESET_REG, + 0, + 0, + BLSP5_QUP_OPERATIONAL_MASK, + BLSP5_SPI_DEASSERT_WAIT_REG, + }, +}; + +static int check_bit_state(void *reg_addr, int mask, + int val, int us_delay) +{ + unsigned int count = TIMEOUT_CNT; + + while ((read32(reg_addr) & mask) != val) { + count--; + if (count == 0) + return -ETIMEDOUT; + udelay(us_delay); + } + + return SUCCESS; +} + +/* + * Check whether QUPn State is valid + */ +static int check_qup_state_valid(struct ipq_spi_slave *ds) +{ + return check_bit_state(ds->regs->qup_state, QUP_STATE_VALID_MASK, + QUP_STATE_VALID, 1); +} + +/* + * Configure QUPn Core state + */ +static int config_spi_state(struct ipq_spi_slave *ds, unsigned int state) +{ + uint32_t val; + int ret = SUCCESS; + + ret = check_qup_state_valid(ds); + if (ret != SUCCESS) + return ret; + + switch (state) { + case QUP_STATE_RUN: + /* Set the state to RUN */ + val = ((read32(ds->regs->qup_state) & ~QUP_STATE_MASK) + | QUP_STATE_RUN); + write32(ds->regs->qup_state, val); + ret = check_qup_state_valid(ds); + break; + case QUP_STATE_RESET: + /* Set the state to RESET */ + val = ((read32(ds->regs->qup_state) & ~QUP_STATE_MASK) + | QUP_STATE_RESET); + write32(ds->regs->qup_state, val); + ret = check_qup_state_valid(ds); + break; + default: + printk(BIOS_ERR, "unsupported QUP SPI state : %d\n", state); + ret = -EINVAL; + break; + } + + return ret; +} + +/* + * Set QUPn SPI Mode + */ +static void spi_set_mode(struct ipq_spi_slave *ds, unsigned int mode) +{ + unsigned int clk_idle_state; + unsigned int input_first_mode; + uint32_t val; + + switch (mode) { + case SPI_MODE0: + clk_idle_state = 0; + input_first_mode = SPI_CONFIG_INPUT_FIRST; + break; + case SPI_MODE1: + clk_idle_state = 0; + input_first_mode = 0; + break; + case SPI_MODE2: + clk_idle_state = 1; + input_first_mode = SPI_CONFIG_INPUT_FIRST; + break; + case SPI_MODE3: + clk_idle_state = 1; + input_first_mode = 0; + break; + default: + printk(BIOS_ERR, "unsupported spi mode : %d\n", mode); + return; + } + + val = read32(ds->regs->spi_config); + val |= input_first_mode; + write32(ds->regs->spi_config, val); + val = read32(ds->regs->io_control); + + if (clk_idle_state) + val |= SPI_IO_CTRL_CLOCK_IDLE_HIGH; + else + val &= ~SPI_IO_CTRL_CLOCK_IDLE_HIGH; + + write32(ds->regs->io_control, val); +} + +/* + * Reset entire QUP and all mini cores + */ +static void spi_reset(struct ipq_spi_slave *ds) +{ + write32(ds->regs->qup_sw_reset, 0x1); + udelay(5); + check_qup_state_valid(ds); +} + +static struct ipq_spi_slave spi_slave_pool[3]; + +static struct ipq_spi_slave *to_ipq_spi(const struct spi_slave *slave) +{ + struct ipq_spi_slave *ds; + size_t i; + + for (i = 0; i < ARRAY_SIZE(spi_slave_pool); i++) { + ds = spi_slave_pool + i; + + if (!ds->allocated) + continue; + + if ((ds->slave.bus == slave->bus) && + (ds->slave.cs == slave->cs)) + return ds; + } + + return NULL; +} + +static void write_force_cs(const struct spi_slave *slave, int assert) +{ + struct ipq_spi_slave *ds = to_ipq_spi(slave); + if (assert) + clrsetbits_le32(ds->regs->io_control, + SPI_IO_CTRL_FORCE_CS_MSK, SPI_IO_CTRL_FORCE_CS_EN); + else + clrsetbits_le32(ds->regs->io_control, + SPI_IO_CTRL_FORCE_CS_MSK, SPI_IO_CTRL_FORCE_CS_DIS); +} + +/* + * BLSP QUPn SPI Hardware Initialisation + */ +static int spi_hw_init(struct ipq_spi_slave *ds) +{ + int ret; + + ds->initialized = 0; + + /* QUPn module configuration */ + spi_reset(ds); + + /* Set the QUPn state */ + ret = config_spi_state(ds, QUP_STATE_RESET); + if (ret) + return ret; + + /* + * Configure Mini core to SPI core with Input Output enabled, + * SPI master, N = 8 bits + */ + clrsetbits_le32(ds->regs->qup_config, QUP_CONFIG_MINI_CORE_MSK | + QUP_CONF_INPUT_MSK | + QUP_CONF_OUTPUT_MSK | + QUP_CONF_N_MASK, + QUP_CONFIG_MINI_CORE_SPI | + QUP_CONF_INPUT_ENA | + QUP_CONF_OUTPUT_ENA | + QUP_CONF_N_SPI_8_BIT_WORD); + + /* + * Configure Input first SPI protocol, + * SPI master mode and no loopback + */ + clrsetbits_le32(ds->regs->spi_config, SPI_CONFIG_LOOP_BACK_MSK | + SPI_CONFIG_NO_SLAVE_OPER_MSK, + SPI_CONFIG_NO_LOOP_BACK | + SPI_CONFIG_NO_SLAVE_OPER); + + /* + * Configure SPI IO Control Register + * CLK_ALWAYS_ON = 0 + * MX_CS_MODE = 0 + * NO_TRI_STATE = 1 + */ + write32(ds->regs->io_control, SPI_IO_CTRL_CLK_ALWAYS_ON | + SPI_IO_CTRL_NO_TRI_STATE | SPI_IO_CTRL_MX_CS_MODE); + + /* + * Configure SPI IO Modes. + * OUTPUT_BIT_SHIFT_EN = 1 + * INPUT_MODE = Block Mode + * OUTPUT MODE = Block Mode + */ + clrsetbits_le32(ds->regs->qup_io_modes, + QUP_IO_MODES_OUTPUT_BIT_SHIFT_MSK | + QUP_IO_MODES_INPUT_MODE_MSK | + QUP_IO_MODES_OUTPUT_MODE_MSK, + QUP_IO_MODES_OUTPUT_BIT_SHIFT_EN | + QUP_IO_MODES_INPUT_BLOCK_MODE | + QUP_IO_MODES_OUTPUT_BLOCK_MODE); + + spi_set_mode(ds, ds->mode); + + /* Disable Error mask */ + write32(ds->regs->error_flags_en, 0); + write32(ds->regs->qup_error_flags_en, 0); + write32(ds->regs->qup_deassert_wait, 0); + + ds->initialized = 1; + + return SUCCESS; +}
static int spi_ctrlr_claim_bus(const struct spi_slave *slave) { - return 0; + struct ipq_spi_slave *ds = to_ipq_spi(slave); + unsigned int ret; + + ret = spi_hw_init(ds); + if (ret) + return -EIO; + switch (slave->bus) { + case 4: + gpio_configure + (GPIO(37), 2, GPIO_PULL_DOWN, GPIO_6MA, GPIO_INPUT); // MOSI + gpio_configure + (GPIO(38), 2, GPIO_PULL_DOWN, GPIO_6MA, GPIO_OUTPUT); // MISO + gpio_configure + (GPIO(117), 2, GPIO_NO_PULL, GPIO_6MA, GPIO_OUTPUT); // CS + gpio_configure + (GPIO(118), 2, GPIO_PULL_DOWN, GPIO_6MA, GPIO_OUTPUT);// CLK + break; + case 5: + gpio_configure + (GPIO(26), 3, GPIO_NO_PULL, GPIO_16MA, GPIO_INPUT); // MOSI + gpio_configure + (GPIO(27), 3, GPIO_NO_PULL, GPIO_16MA, GPIO_INPUT); // MISO + gpio_configure + (GPIO(28), 4, GPIO_PULL_UP, GPIO_16MA, GPIO_INPUT); // CS + gpio_configure + (GPIO(29), 4, GPIO_NO_PULL, GPIO_16MA, GPIO_INPUT); // CLK + break; + default: + printk(BIOS_ERR, "SPI error: unsupported bus %d " + "(Supported buses 0, 1, 2, 3, 4, 5)\n", slave->bus); + break; + } + write_force_cs(slave, 1); + + return SUCCESS; }
static void spi_ctrlr_release_bus(const struct spi_slave *slave) { + struct ipq_spi_slave *ds = to_ipq_spi(slave);
+ /* Reset the SPI hardware */ + write_force_cs(slave, 0); + spi_reset(ds); + ds->initialized = 0; }
-static int spi_ctrlr_xfer(const struct spi_slave *slave, const void *dout, - size_t bytes_out, void *din, size_t bytes_in) +/* + * Function to write data to OUTPUT FIFO + */ +static void spi_write_byte(struct ipq_spi_slave *ds, unsigned char data) { + /* Wait for space in the FIFO */ + while ((read32(ds->regs->qup_operational) & OUTPUT_FIFO_FULL)) + udelay(1); + + /* Write the byte of data */ + write32(ds->regs->qup_output_fifo, data); +} + +/* + * Function to read data from Input FIFO + */ +static unsigned char spi_read_byte(struct ipq_spi_slave *ds) +{ + /* Wait for Data in FIFO */ + while (!(read32(ds->regs->qup_operational) & INPUT_FIFO_NOT_EMPTY)) + udelay(1); + + /* Read a byte of data */ + return read32(ds->regs->qup_input_fifo) & 0xff; +} + +/* + * Function to check wheather Input or Output FIFO + * has data to be serviced + */ +static int check_fifo_status(void *reg_addr) +{ + unsigned int count = TIMEOUT_CNT; + unsigned int status_flag; + unsigned int val; + + do { + val = read32(reg_addr); + count--; + if (count == 0) + return -ETIMEDOUT; + status_flag = ((val & OUTPUT_SERVICE_FLAG) | + (val & INPUT_SERVICE_FLAG)); + } while (!status_flag); + + return SUCCESS; +} + +/* + * Function to configure Input and Output enable/disable + */ +static void enable_io_config(struct ipq_spi_slave *ds, + uint32_t write_cnt, uint32_t read_cnt) +{ + + if (write_cnt) { + clrsetbits_le32(ds->regs->qup_config, + QUP_CONF_OUTPUT_MSK, QUP_CONF_OUTPUT_ENA); + } else { + clrsetbits_le32(ds->regs->qup_config, + QUP_CONF_OUTPUT_MSK, QUP_CONF_NO_OUTPUT); + } + + if (read_cnt) { + clrsetbits_le32(ds->regs->qup_config, + QUP_CONF_INPUT_MSK, QUP_CONF_INPUT_ENA); + } else { + clrsetbits_le32(ds->regs->qup_config, + QUP_CONF_INPUT_MSK, QUP_CONF_NO_INPUT); + } +} + +/* + * Function to read bytes number of data from the Input FIFO + */ +static int __blsp_spi_read(struct ipq_spi_slave *ds, u8 *data_buffer, + unsigned int bytes) +{ + uint32_t val; + unsigned int i; + unsigned int fifo_count; + int ret = SUCCESS; + int state_config; + struct stopwatch sw; + + /* Configure no of bytes to read */ + state_config = config_spi_state(ds, QUP_STATE_RESET); + if (state_config) + return state_config; + + /* Configure input and output enable */ + enable_io_config(ds, 0, bytes); + + write32(ds->regs->qup_mx_input_count, bytes); + + state_config = config_spi_state(ds, QUP_STATE_RUN); + if (state_config) + return state_config; + + while (bytes) { + ret = check_fifo_status(ds->regs->qup_operational); + if (ret != SUCCESS) + goto out; + + val = read32(ds->regs->qup_operational); + if (val & INPUT_SERVICE_FLAG) { + /* + * acknowledge to hw that software will + * read input data + */ + val &= INPUT_SERVICE_FLAG; + write32(ds->regs->qup_operational, val); + + fifo_count = ((bytes > SPI_INPUT_BLOCK_SIZE) ? + SPI_INPUT_BLOCK_SIZE : bytes); + + for (i = 0; i < fifo_count; i++) { + *data_buffer = spi_read_byte(ds); + data_buffer++; + bytes--; + } + } + } + + stopwatch_init_msecs_expire(&sw, 10); + + do { + val = read32(ds->regs->qup_operational); + if (stopwatch_expired(&sw)) { + printk(BIOS_ERR, "SPI FIFO read timeout\n"); + ret = -ETIMEDOUT; + goto out; + } + } while (!(val & MAX_INPUT_DONE_FLAG)); + +out: + /* + * Put the SPI Core back in the Reset State + * to end the transfer + */ + (void)config_spi_state(ds, QUP_STATE_RESET); + return ret; +} + +static int blsp_spi_read(struct ipq_spi_slave *ds, u8 *data_buffer, + unsigned int bytes) +{ + int length, ret; + + while (bytes) { + length = (bytes < MAX_COUNT_SIZE) ? bytes : MAX_COUNT_SIZE; + + ret = __blsp_spi_read(ds, data_buffer, length); + if (ret != SUCCESS) + return ret; + + data_buffer += length; + bytes -= length; + } + return 0; }
+/* + * Function to write data to the Output FIFO + */ +static int __blsp_spi_write(struct ipq_spi_slave *ds, const u8 *cmd_buffer, + unsigned int bytes) +{ + uint32_t val; + unsigned int i; + unsigned int write_len = bytes; + unsigned int read_len = bytes; + unsigned int fifo_count; + int ret = SUCCESS; + int state_config; + struct stopwatch sw; + + state_config = config_spi_state(ds, QUP_STATE_RESET); + if (state_config) + return state_config; + + /* Configure input and output enable */ + enable_io_config(ds, write_len, read_len); + /* No of bytes to be written in Output FIFO */ + write32(ds->regs->qup_mx_output_count, bytes); + write32(ds->regs->qup_mx_input_count, bytes); + state_config = config_spi_state(ds, QUP_STATE_RUN); + + if (state_config) + return state_config; + + /* + * read_len considered to ensure that we read the dummy data for the + * write we performed. This is needed to ensure with WR-RD transaction + * to get the actual data on the subsequent read cycle that happens + */ + while (write_len || read_len) { + ret = check_fifo_status(ds->regs->qup_operational); + if (ret != SUCCESS) + goto out; + + val = read32(ds->regs->qup_operational); + if (val & OUTPUT_SERVICE_FLAG) { + /* + * acknowledge to hw that software will write + * expected output data + */ + val &= OUTPUT_SERVICE_FLAG; + write32(ds->regs->qup_operational, val); + + if (write_len > SPI_OUTPUT_BLOCK_SIZE) + fifo_count = SPI_OUTPUT_BLOCK_SIZE; + else + fifo_count = write_len; + + for (i = 0; i < fifo_count; i++) { + /* Write actual data to output FIFO */ + spi_write_byte(ds, *cmd_buffer); + cmd_buffer++; + write_len--; + } + } + + if (val & INPUT_SERVICE_FLAG) { + /* + * acknowledge to hw that software + * will read input data + */ + val &= INPUT_SERVICE_FLAG; + write32(ds->regs->qup_operational, val); + + if (read_len > SPI_INPUT_BLOCK_SIZE) + fifo_count = SPI_INPUT_BLOCK_SIZE; + else + fifo_count = read_len; + + for (i = 0; i < fifo_count; i++) { + /* Read dummy data for the data written */ + (void)spi_read_byte(ds); + + /* Decrement the read count after reading the + * dummy data from the device. This is to make + * sure we read dummy data before we write the + * data to fifo + */ + read_len--; + } + } + } + + stopwatch_init_msecs_expire(&sw, 10); + + do { + val = read32(ds->regs->qup_operational); + if (stopwatch_expired(&sw)) { + printk(BIOS_ERR, "SPI FIFO write timeout\n"); + ret = -ETIMEDOUT; + goto out; + } + + } while (!(val & MAX_OUTPUT_DONE_FLAG)); + +out: + /* + * Put the SPI Core back in the Reset State + * to end the transfer + */ + (void)config_spi_state(ds, QUP_STATE_RESET); + + return ret; +} + +static int blsp_spi_write(struct ipq_spi_slave *ds, u8 *cmd_buffer, + unsigned int bytes) +{ + int length, ret; + + while (bytes) { + length = (bytes < MAX_COUNT_SIZE) ? bytes : MAX_COUNT_SIZE; + + ret = __blsp_spi_write(ds, cmd_buffer, length); + if (ret != SUCCESS) { + printk(BIOS_ERR, "SPI:DBG write not success\n"); + return ret; + } + + cmd_buffer += length; + bytes -= length; + } + + return 0; +} + +/* + * This function is invoked with either tx_buf or rx_buf. + * Calling this function with both null does a chip select change. + */ +static int spi_ctrlr_xfer(const struct spi_slave *slave, const void *dout, + size_t out_bytes, void *din, size_t in_bytes) +{ + struct ipq_spi_slave *ds = to_ipq_spi(slave); + u8 *txp = (u8 *)dout; + u8 *rxp = (u8 *)din; + int ret; + + ret = config_spi_state(ds, QUP_STATE_RESET); + if (ret != SUCCESS) + return ret; + + if (dout != NULL) { + ret = blsp_spi_write(ds, txp, (unsigned int) out_bytes); + if (ret != SUCCESS) + goto out; + } + + if (din != NULL) { + ret = blsp_spi_read(ds, rxp, in_bytes); + if (ret != SUCCESS) + goto out; + } + +out: + /* + * Put the SPI Core back in the Reset State + * to end the transfer + */ + (void)config_spi_state(ds, QUP_STATE_RESET); + + return ret; +} + +static int spi_ctrlr_setup(const struct spi_slave *slave) +{ + struct ipq_spi_slave *ds = NULL; + int i; + unsigned int bus = slave->bus; + unsigned int cs = slave->cs; + + if ((bus < BLSP0_SPI) || (bus > BLSP5_SPI) + || ((bus == BLSP0_SPI) && (cs > 2)) + || ((bus == BLSP5_SPI) && (cs > 0))) { + printk(BIOS_ERR, + "SPI error: unsupported bus %d (Supported busses 0, 1 and 2) " + "or chipselect\n", bus); + return -1; + } + + for (i = 0; i < ARRAY_SIZE(spi_slave_pool); i++) { + if (spi_slave_pool[i].allocated) + continue; + ds = spi_slave_pool + i; + ds->slave.bus = bus; + ds->slave.cs = cs; + ds->regs = &spi_reg[bus]; + ds->freq = 10000000; + if (bus == BLSP4_SPI) + ds->freq = 800000; + ds->mode = SPI_MODE0; + ds->allocated = 1; + + return 0; + } + + printk(BIOS_ERR, "SPI error: all %d pools busy\n", i); + return -1; +} + +static int xfer_vectors(const struct spi_slave *slave, + struct spi_op vectors[], size_t count) +{ + return spi_flash_vector_helper(slave, vectors, count, spi_ctrlr_xfer); +} + static const struct spi_ctrlr spi_ctrlr = { + .setup = spi_ctrlr_setup, .claim_bus = spi_ctrlr_claim_bus, .release_bus = spi_ctrlr_release_bus, .xfer = spi_ctrlr_xfer, - .max_xfer_size = 65535, + .xfer_vector = xfer_vectors, + .max_xfer_size = MAX_PACKET_COUNT, };
const struct spi_ctrlr_buses spi_ctrlr_bus_map[] = { { .ctrlr = &spi_ctrlr, - .bus_start = 0, - .bus_end = 0, + .bus_start = BLSP5_SPI, + .bus_end = BLSP5_SPI, + }, + { + .ctrlr = &spi_ctrlr, + .bus_start = BLSP4_SPI, + .bus_end = BLSP4_SPI, }, };
Hello build bot (Jenkins),
I'd like you to reexamine a change. Please visit
https://review.coreboot.org/c/coreboot/+/32058
to look at the new patch set (#5).
Change subject: qcs405: Add SPI driver support ......................................................................
qcs405: Add SPI driver support
Add SPI driver support in coreboot.
Change-Id: I813ba0b5cc8344c463c3e41ff6db80bc0d8ebd96 Signed-off-by: Prudhvi Yarlagadda pyarlaga@codeaurora.org Signed-off-by: Nitheesh Sekar nsekar@codeaurora.org --- M src/soc/qualcomm/qcs405/Kconfig A src/soc/qualcomm/qcs405/include/soc/qup.h A src/soc/qualcomm/qcs405/include/soc/spi.h M src/soc/qualcomm/qcs405/spi.c 4 files changed, 1,202 insertions(+), 17 deletions(-)
git pull ssh://review.coreboot.org:29418/coreboot refs/changes/58/32058/5
build bot (Jenkins) has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/32058 )
Change subject: qcs405: Add SPI driver support ......................................................................
Patch Set 5:
(1 comment)
https://review.coreboot.org/#/c/32058/5/src/soc/qualcomm/qcs405/spi.c File src/soc/qualcomm/qcs405/spi.c:
https://review.coreboot.org/#/c/32058/5/src/soc/qualcomm/qcs405/spi.c@722 PS5, Line 722: if (((bus != BLSP4_SPI) && (bus != BLSP5_SPI)) || cs != 0 ) { space prohibited before that close parenthesis ')'
Hello build bot (Jenkins),
I'd like you to reexamine a change. Please visit
https://review.coreboot.org/c/coreboot/+/32058
to look at the new patch set (#6).
Change subject: qcs405: Add SPI driver support ......................................................................
qcs405: Add SPI driver support
Add SPI driver support in coreboot.
Change-Id: I813ba0b5cc8344c463c3e41ff6db80bc0d8ebd96 Signed-off-by: Prudhvi Yarlagadda pyarlaga@codeaurora.org Signed-off-by: Nitheesh Sekar nsekar@codeaurora.org --- M src/soc/qualcomm/qcs405/Kconfig A src/soc/qualcomm/qcs405/include/soc/qup.h A src/soc/qualcomm/qcs405/include/soc/spi.h M src/soc/qualcomm/qcs405/spi.c 4 files changed, 1,202 insertions(+), 17 deletions(-)
git pull ssh://review.coreboot.org:29418/coreboot refs/changes/58/32058/6
Hello build bot (Jenkins),
I'd like you to reexamine a change. Please visit
https://review.coreboot.org/c/coreboot/+/32058
to look at the new patch set (#9).
Change subject: qcs405: Add SPI driver support ......................................................................
qcs405: Add SPI driver support
Add SPI driver support in coreboot.
Change-Id: I813ba0b5cc8344c463c3e41ff6db80bc0d8ebd96 Signed-off-by: Prudhvi Yarlagadda pyarlaga@codeaurora.org Signed-off-by: Nitheesh Sekar nsekar@codeaurora.org --- M src/soc/qualcomm/qcs405/Kconfig A src/soc/qualcomm/qcs405/include/soc/qup.h A src/soc/qualcomm/qcs405/include/soc/spi.h M src/soc/qualcomm/qcs405/spi.c 4 files changed, 1,202 insertions(+), 17 deletions(-)
git pull ssh://review.coreboot.org:29418/coreboot refs/changes/58/32058/9
Patrick Georgi has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/32058 )
Change subject: qcs405: Add SPI driver support ......................................................................
Patch Set 10: Code-Review+2
Patrick Georgi has submitted this change and it was merged. ( https://review.coreboot.org/c/coreboot/+/32058 )
Change subject: qcs405: Add SPI driver support ......................................................................
qcs405: Add SPI driver support
Add SPI driver support in coreboot.
Change-Id: I813ba0b5cc8344c463c3e41ff6db80bc0d8ebd96 Signed-off-by: Prudhvi Yarlagadda pyarlaga@codeaurora.org Signed-off-by: Nitheesh Sekar nsekar@codeaurora.org Reviewed-on: https://review.coreboot.org/c/coreboot/+/32058 Reviewed-by: Patrick Georgi pgeorgi@google.com Tested-by: build bot (Jenkins) no-reply@coreboot.org --- M src/soc/qualcomm/qcs405/Kconfig A src/soc/qualcomm/qcs405/include/soc/qup.h A src/soc/qualcomm/qcs405/include/soc/spi.h M src/soc/qualcomm/qcs405/spi.c 4 files changed, 1,202 insertions(+), 17 deletions(-)
Approvals: build bot (Jenkins): Verified Patrick Georgi: Looks good to me, approved
diff --git a/src/soc/qualcomm/qcs405/Kconfig b/src/soc/qualcomm/qcs405/Kconfig index 6bbdd3b..aa867c2 100644 --- a/src/soc/qualcomm/qcs405/Kconfig +++ b/src/soc/qualcomm/qcs405/Kconfig @@ -19,4 +19,13 @@ select VBOOT_SEPARATE_VERSTAGE select VBOOT_RETURN_FROM_VERSTAGE select VBOOT_STARTS_IN_BOOTBLOCK + +config QCS405_BLSP_SPI + bool + default y + prompt "Build Flash Using SPI-NOR" + +config BOOT_DEVICE_SPI_FLASH_BUS + int + default 5 endif diff --git a/src/soc/qualcomm/qcs405/include/soc/qup.h b/src/soc/qualcomm/qcs405/include/soc/qup.h new file mode 100644 index 0000000..f8f9c75 --- /dev/null +++ b/src/soc/qualcomm/qcs405/include/soc/qup.h @@ -0,0 +1,232 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2018 - 2019 The Linux Foundation. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials provided + * with the distribution. + * * Neither the name of The Linux Foundation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS + * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR + * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE + * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN + * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef __QUP_H__ +#define __QUP_H__ + + +/* QUP block registers */ +#define QUP_CONFIG 0x000 +#define QUP_STATE 0x004 +#define QUP_IO_MODES 0x008 +#define QUP_SW_RESET 0x00C +#define QUP_TRANSFER_CANCEL 0x014 +#define QUP_OPERATIONAL 0x018 +#define QUP_ERROR_FLAGS 0x01C +#define QUP_ERROR_FLAGS_EN 0x020 +#define QUP_TEST_CTRL 0x024 +#define QUP_OPERATIONAL_MASK 0x028 +#define QUP_HW_VERSION 0x030 +#define QUP_MX_OUTPUT_COUNT 0x100 +#define QUP_MX_OUTPUT_CNT_CURRENT 0x104 +#define QUP_OUTPUT_DEBUG 0x108 +#define QUP_OUTPUT_FIFO_WORD_CNT 0x10C +#define QUP_OUTPUT_FIFO 0x110 +#define QUP_OUTPUT_FIFO_SIZE 64 /* bytes */ +#define QUP_MX_WRITE_COUNT 0x150 +#define QUP_MX_WRITE_CNT_CURRENT 0x154 +#define QUP_MX_INPUT_COUNT 0x200 +#define QUP_MX_INPUT_CNT_CURRENT 0x204 +#define QUP_MX_READ_COUNT 0x208 +#define QUP_MX_READ_CNT_CURRENT 0x20C +#define QUP_INPUT_DEBUG 0x210 +#define QUP_INPUT_FIFO_WORD_CNT 0x214 +#define QUP_INPUT_FIFO 0x218 +#define QUP_INPUT_FIFO_SIZE 64 /* bytes */ +#define QUP_I2C_MASTER_CLK_CTL 0x400 +#define QUP_I2C_MASTER_STATUS 0x404 +#define QUP_I2C_MASTER_CONFIG 0x408 +#define QUP_I2C_MASTER_BUS_CLEAR 0x40C +#define QUP_I2C_MASTER_LOCAL_ID 0x410 +#define QUP_I2C_MASTER_COMMAND 0x414 + +#define OUTPUT_FIFO_FULL (1<<6) +#define INPUT_FIFO_NOT_EMPTY (1<<5) +#define OUTPUT_FIFO_NOT_EMPTY (1<<4) +#define MAX_OUTPUT_DONE_FLAG (1<<10) +#define MAX_INPUT_DONE_FLAG (1<<11) +#define INPUT_SERVICE_FLAG (1<<9) +#define OUTPUT_SERVICE_FLAG (1<<8) +#define QUP_UNPACK_EN (1<<14) +#define QUP_PACK_EN (1<<15) +#define QUP_OUTPUT_BIT_SHIFT_EN (1<<16) + +#define QUP_MODE_MASK (0x03) +#define QUP_OUTPUT_MODE_SHFT (10) +#define QUP_INPUT_MODE_SHFT (12) + +#define QUP_FS_DIVIDER_MASK (0xFF) + +#define QUP_APP_CLK_ON_EN (1 << 12) +#define QUP_CORE_CLK_ON_EN (1 << 13) +#define QUP_MINI_CORE_PROTO_SHFT (8) +#define QUP_MINI_CORE_PROTO_MASK (0x0F) + +/* Mini-core states */ +#define QUP_STATE_RESET 0x0 +#define QUP_STATE_RUN 0x1 +#define QUP_STATE_PAUSE 0x3 +#define QUP_STATE_VALID (1<<2) +#define QUP_STATE_MASK 0x3 +#define QUP_STATE_VALID_MASK (1<<2) + +/* Tags for output FIFO */ +#define QUP_I2C_1CLK_NOOP_SEQ 0x1 /*MSB 8-bit NOP, LSB 8-bits 1 clk.*/ +#define QUP_I2C_START_SEQ (0x1 << 8) +#define QUP_I2C_DATA_SEQ (0x2 << 8) +#define QUP_I2C_STOP_SEQ (0x3 << 8) +#define QUP_I2C_RECV_SEQ (0x4 << 8) + +/* Tags for input FIFO */ +#define QUP_I2C_MIDATA_SEQ (0x5 << 8) +#define QUP_I2C_MISTOP_SEQ (0x6 << 8) +#define QUP_I2C_MINACK_SEQ (0x7 << 8) + +#define QUP_I2C_ADDR(x) ((x & 0xFF) << 1) +#define QUP_I2C_DATA(x) (x & 0xFF) +#define QUP_I2C_MI_TAG(x) (x & 0xFF00) +#define QUP_I2C_SLAVE_READ (0x1) + +/*Bit vals for I2C_MASTER_CLK_CTL register */ +#define QUP_HS_DIVIDER_SHFT (8) +#define QUP_DIVIDER_MIN_VAL (0x3) + +/* Bit masks for I2C_MASTER_STATUS register */ +#define QUP_I2C_INVALID_READ_SEQ (1 << 25) +#define QUP_I2C_INVALID_READ_ADDR (1 << 24) +#define QUP_I2C_INVALID_TAG (1 << 23) +#define QUP_I2C_FAILED_MASK (0x3 << 6) +#define QUP_I2C_INVALID_WRITE (1 << 5) +#define QUP_I2C_ARB_LOST (1 << 4) +#define QUP_I2C_PACKET_NACK (1 << 3) +#define QUP_I2C_BUS_ERROR (1 << 2) + +typedef enum { + QUP_SUCCESS = 0, + QUP_ERR_BAD_PARAM, + QUP_ERR_STATE_SET, + QUP_ERR_TIMEOUT, + QUP_ERR_UNSUPPORTED, + QUP_ERR_I2C_FAILED, + QUP_ERR_I2C_ARB_LOST, + QUP_ERR_I2C_BUS_ERROR, + QUP_ERR_I2C_INVALID_SLAVE_ADDR, + QUP_ERR_XFER_FAIL, + QUP_ERR_I2C_NACK, + QUP_ERR_I2C_INVALID_WRITE, + QUP_ERR_I2C_INVALID_TAG, + QUP_ERR_UNDEFINED, +} qup_return_t; + +typedef enum { + QUP_MINICORE_SPI = 1, + QUP_MINICORE_I2C_MASTER, + QUP_MINICORE_I2C_SLAVE +} qup_protocol_t; + +typedef enum { + QUP_MODE_FIFO = 0, + QUP_MODE_BLOCK, + QUP_MODE_DATAMOVER, +} qup_mode_t; + +typedef struct { + qup_protocol_t protocol; + unsigned int clk_frequency; + unsigned int src_frequency; + qup_mode_t mode; + unsigned int initialized; +} qup_config_t; + +typedef struct { + qup_protocol_t protocol; + union { + struct { + uint8_t addr; + uint8_t *data; + unsigned int data_len; + } iic; + struct { + void *in; + void *out; + unsigned int size; + } spi; + } p; +} qup_data_t; + +/* + * Initialize BLSP QUP block for FIFO I2C transfers. + * id[IN]: BLSP for which QUP is to be initialized. + * config_ptr[IN]: configurations parameters for the QUP. + * + * return: QUP_SUCCESS, if initialization succeeds. + */ +qup_return_t qup_init(blsp_qup_id_t id, const qup_config_t *config_ptr); + +/* + * Set QUP state to run, pause, reset. + * id[IN]: BLSP block for which QUP state is to be set. + * state[IN]: New state to transition to. + * + * return: QUP_SUCCESS, if state transition succeeds. + */ +qup_return_t qup_set_state(blsp_qup_id_t id, uint32_t state); + +/* + * Reset the status bits set during an i2c transfer. + * id[IN]: BLSP block for which i2c status bits are to be cleared. + * + * return: QUP_SUCCESS, if status bits are cleared successfully. + */ +qup_return_t qup_reset_i2c_master_status(blsp_qup_id_t id); + +/* + * Send data to the peripheral on the bus. + * id[IN]: BLSP block for which data is to be sent. + * p_tx_obj[IN]: Data to be sent to the slave on the bus. + * stop_seq[IN]: When set to non-zero QUP engine sends i2c stop sequnce. + * + * return: QUP_SUCCESS, when data is sent successfully to the peripheral. + */ +qup_return_t qup_send_data(blsp_qup_id_t id, qup_data_t *p_tx_obj, + uint8_t stop_seq); + +/* + * Receive data from peripheral on the bus. + * id[IN]: BLSP block from which data is to be received. + * p_tx_obj[IN]: length of data to be received, slave address. + * [OUT]: buffer filled with data from slave. + * + * return: QUP_SUCCESS, when data is received successfully. + */ +qup_return_t qup_recv_data(blsp_qup_id_t id, qup_data_t *p_tx_obj); + +#endif //__QUP_H__ diff --git a/src/soc/qualcomm/qcs405/include/soc/spi.h b/src/soc/qualcomm/qcs405/include/soc/spi.h new file mode 100644 index 0000000..12f7fd9 --- /dev/null +++ b/src/soc/qualcomm/qcs405/include/soc/spi.h @@ -0,0 +1,210 @@ +/* + * Register definitions for the IPQ BLSP SPI Controller + * + * Copyright (c) 2012-2019 The Linux Foundation. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials provided + * with the distribution. + * * Neither the name of The Linux Foundation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS + * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR + * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE + * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN + * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef _QCS405_SPI_H_ +#define _QCS405_SPI_H_ + +#include <soc/iomap.h> +#include <soc/qup.h> +#include <spi-generic.h> + +#define BLSP0_QUP_REG_BASE ((void *)0x78b5000u) +#define BLSP4_QUP_REG_BASE ((void *)0x78b9000u) +#define BLSP5_QUP_REG_BASE ((void *)0x7af5000u) + +#define BLSP0_SPI_CONFIG_REG (BLSP0_QUP_REG_BASE + 0x00000300) +#define BLSP4_SPI_CONFIG_REG (BLSP4_QUP_REG_BASE + 0x00000300) +#define BLSP5_SPI_CONFIG_REG (BLSP5_QUP_REG_BASE + 0x00000300) + +#define BLSP0_SPI_IO_CONTROL_REG (BLSP0_QUP_REG_BASE + 0x00000304) +#define BLSP4_SPI_IO_CONTROL_REG (BLSP4_QUP_REG_BASE + 0x00000304) +#define BLSP5_SPI_IO_CONTROL_REG (BLSP5_QUP_REG_BASE + 0x00000304) + +#define BLSP0_SPI_ERROR_FLAGS_REG (BLSP0_QUP_REG_BASE + 0x00000308) +#define BLSP4_SPI_ERROR_FLAGS_REG (BLSP4_QUP_REG_BASE + 0x00000308) +#define BLSP5_SPI_ERROR_FLAGS_REG (BLSP5_QUP_REG_BASE + 0x00000308) + +#define BLSP0_SPI_DEASSERT_WAIT_REG (BLSP0_QUP_REG_BASE + 0x00000310) +#define BLSP4_SPI_DEASSERT_WAIT_REG (BLSP4_QUP_REG_BASE + 0x00000310) +#define BLSP5_SPI_DEASSERT_WAIT_REG (BLSP5_QUP_REG_BASE + 0x00000310) +#define BLSP0_SPI_ERROR_FLAGS_EN_REG (BLSP0_QUP_REG_BASE + 0x0000030c) +#define BLSP4_SPI_ERROR_FLAGS_EN_REG (BLSP4_QUP_REG_BASE + 0x0000030c) +#define BLSP5_SPI_ERROR_FLAGS_EN_REG (BLSP5_QUP_REG_BASE + 0x0000030c) + +#define BLSP0_QUP_CONFIG_REG (BLSP0_QUP_REG_BASE + 0x00000000) +#define BLSP4_QUP_CONFIG_REG (BLSP4_QUP_REG_BASE + 0x00000000) +#define BLSP5_QUP_CONFIG_REG (BLSP5_QUP_REG_BASE + 0x00000000) + +#define BLSP0_QUP_ERROR_FLAGS_REG (BLSP0_QUP_REG_BASE + 0x0000001c) +#define BLSP4_QUP_ERROR_FLAGS_REG (BLSP4_QUP_REG_BASE + 0x0000001c) +#define BLSP5_QUP_ERROR_FLAGS_REG (BLSP5_QUP_REG_BASE + 0x0000001c) + +#define BLSP0_QUP_ERROR_FLAGS_EN_REG (BLSP0_QUP_REG_BASE + 0x00000020) +#define BLSP4_QUP_ERROR_FLAGS_EN_REG (BLSP4_QUP_REG_BASE + 0x00000020) +#define BLSP5_QUP_ERROR_FLAGS_EN_REG (BLSP5_QUP_REG_BASE + 0x00000020) + +#define BLSP0_QUP_OPERATIONAL_MASK (BLSP0_QUP_REG_BASE + 0x00000028) +#define BLSP4_QUP_OPERATIONAL_MASK (BLSP4_QUP_REG_BASE + 0x00000028) +#define BLSP5_QUP_OPERATIONAL_MASK (BLSP5_QUP_REG_BASE + 0x00000028) + +#define BLSP0_QUP_OPERATIONAL_REG (BLSP0_QUP_REG_BASE + 0x00000018) +#define BLSP4_QUP_OPERATIONAL_REG (BLSP4_QUP_REG_BASE + 0x00000018) +#define BLSP5_QUP_OPERATIONAL_REG (BLSP5_QUP_REG_BASE + 0x00000018) + +#define BLSP0_QUP_IO_MODES_REG (BLSP0_QUP_REG_BASE + 0x00000008) +#define BLSP4_QUP_IO_MODES_REG (BLSP4_QUP_REG_BASE + 0x00000008) +#define BLSP5_QUP_IO_MODES_REG (BLSP5_QUP_REG_BASE + 0x00000008) + +#define BLSP0_QUP_STATE_REG (BLSP0_QUP_REG_BASE + 0x00000004) +#define BLSP4_QUP_STATE_REG (BLSP4_QUP_REG_BASE + 0x00000004) +#define BLSP5_QUP_STATE_REG (BLSP5_QUP_REG_BASE + 0x00000004) + +#define BLSP0_QUP_INPUT_FIFOc_REG(c) \ + (BLSP0_QUP_REG_BASE + 0x00000218 + 4 * (c)) +#define BLSP4_QUP_INPUT_FIFOc_REG(c) \ + (BLSP4_QUP_REG_BASE + 0x00000218 + 4 * (c)) +#define BLSP5_QUP_INPUT_FIFOc_REG(c) \ + (BLSP5_QUP_REG_BASE + 0x00000218 + 4 * (c)) + +#define BLSP0_QUP_OUTPUT_FIFOc_REG(c) \ + (BLSP0_QUP_REG_BASE + 0x00000110 + 4 * (c)) +#define BLSP4_QUP_OUTPUT_FIFOc_REG(c) \ + (BLSP4_QUP_REG_BASE + 0x00000110 + 4 * (c)) +#define BLSP5_QUP_OUTPUT_FIFOc_REG(c) \ + (BLSP5_QUP_REG_BASE + 0x00000110 + 4 * (c)) + +#define BLSP0_QUP_MX_INPUT_COUNT_REG (BLSP0_QUP_REG_BASE + 0x00000200) +#define BLSP4_QUP_MX_INPUT_COUNT_REG (BLSP4_QUP_REG_BASE + 0x00000200) +#define BLSP5_QUP_MX_INPUT_COUNT_REG (BLSP5_QUP_REG_BASE + 0x00000200) + +#define BLSP0_QUP_MX_OUTPUT_COUNT_REG (BLSP0_QUP_REG_BASE + 0x00000100) +#define BLSP4_QUP_MX_OUTPUT_COUNT_REG (BLSP4_QUP_REG_BASE + 0x00000100) +#define BLSP5_QUP_MX_OUTPUT_COUNT_REG (BLSP5_QUP_REG_BASE + 0x00000100) + +#define BLSP0_QUP_SW_RESET_REG (BLSP0_QUP_REG_BASE + 0x0000000c) +#define BLSP4_QUP_SW_RESET_REG (BLSP4_QUP_REG_BASE + 0x0000000c) +#define BLSP5_QUP_SW_RESET_REG (BLSP5_QUP_REG_BASE + 0x0000000c) + +#define QUP_CONFIG_MINI_CORE_MSK (0x0F << 8) +#define QUP_CONFIG_MINI_CORE_SPI (1 << 8) +#define QUP_CONF_INPUT_MSK (1 << 7) +#define QUP_CONF_INPUT_ENA (0 << 7) +#define QUP_CONF_NO_INPUT (1 << 7) +#define QUP_CONF_OUTPUT_MSK (1 << 6) +#define QUP_CONF_OUTPUT_ENA (0 << 6) +#define QUP_CONF_NO_OUTPUT (1 << 6) +#define QUP_CONF_N_MASK 0x1F +#define QUP_CONF_N_SPI_8_BIT_WORD 0x07 + +#define SPI_CONFIG_INPUT_FIRST (1 << 9) +#define SPI_CONFIG_INPUT_FIRST_BACK (0 << 9) +#define SPI_CONFIG_LOOP_BACK_MSK (1 << 8) +#define SPI_CONFIG_NO_LOOP_BACK (0 << 8) +#define SPI_CONFIG_NO_SLAVE_OPER_MSK (1 << 5) +#define SPI_CONFIG_NO_SLAVE_OPER (0 << 5) + +#define SPI_IO_CTRL_CLK_ALWAYS_ON (0 << 9) +#define SPI_IO_CTRL_MX_CS_MODE (1 << 8) +#define SPI_IO_CTRL_NO_TRI_STATE (1 << 0) +#define SPI_IO_CTRL_FORCE_CS_MSK (1 << 11) +#define SPI_IO_CTRL_FORCE_CS_EN (1 << 11) +#define SPI_IO_CTRL_FORCE_CS_DIS (0 << 11) +#define SPI_IO_CTRL_CLOCK_IDLE_HIGH (1 << 10) + +#define QUP_IO_MODES_OUTPUT_BIT_SHIFT_MSK (1 << 16) +#define QUP_IO_MODES_OUTPUT_BIT_SHIFT_EN (1 << 16) +#define QUP_IO_MODES_INPUT_MODE_MSK (0x03 << 12) +#define QUP_IO_MODES_INPUT_BLOCK_MODE (0x01 << 12) +#define QUP_IO_MODES_OUTPUT_MODE_MSK (0x03 << 10) +#define QUP_IO_MODES_OUTPUT_BLOCK_MODE (0x01 << 10) + +#define SPI_INPUT_BLOCK_SIZE 4 +#define SPI_OUTPUT_BLOCK_SIZE 4 + +#define MAX_COUNT_SIZE 0xffff + +#define SPI_CORE_RESET 0 +#define SPI_CORE_RUNNING 1 +#define SPI_MODE0 0 +#define SPI_MODE1 1 +#define SPI_MODE2 2 +#define SPI_MODE3 3 +#define BLSP0_SPI 0 +#define BLSP4_SPI 4 +#define BLSP5_SPI 5 + +struct blsp_spi { + void *spi_config; + void *io_control; + void *error_flags; + void *error_flags_en; + void *qup_config; + void *qup_error_flags; + void *qup_error_flags_en; + void *qup_operational; + void *qup_io_modes; + void *qup_state; + void *qup_input_fifo; + void *qup_output_fifo; + void *qup_mx_input_count; + void *qup_mx_output_count; + void *qup_sw_reset; + void *qup_ns_reg; + void *qup_md_reg; + void *qup_op_mask; + void *qup_deassert_wait; +}; + + +#define SUCCESS 0 + +#define DUMMY_DATA_VAL 0 +#define TIMEOUT_CNT 100 + +#define ETIMEDOUT -10 +#define EINVAL -11 +#define EIO -12 + +/* MX_INPUT_COUNT and MX_OUTPUT_COUNT are 16-bits. Zero has a special meaning + * (count function disabled) and does not hold significance in the count. */ +#define MAX_PACKET_COUNT ((64 * KiB) - 1) + + +struct qcs_spi_slave { + struct spi_slave slave; + const struct blsp_spi *regs; + unsigned int mode; + unsigned int initialized; + unsigned long freq; + int allocated; +}; + +#endif diff --git a/src/soc/qualcomm/qcs405/spi.c b/src/soc/qualcomm/qcs405/spi.c index c04b15d..13b9dae 100644 --- a/src/soc/qualcomm/qcs405/spi.c +++ b/src/soc/qualcomm/qcs405/spi.c @@ -1,49 +1,783 @@ /* - * This file is part of the coreboot project. + * Copyright (c) 2012-2019 The Linux Foundation. All rights reserved. * - * Copyright (C) 2018, The Linux Foundation. All rights reserved. + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials provided + * with the distribution. + * * Neither the name of The Linux Foundation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 and - * only version 2 as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. + * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS + * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR + * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE + * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN + * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
-#include <spi-generic.h> +#include <device/mmio.h> +#include <console/console.h> +#include <delay.h> +#include <gpio.h> +#include <soc/iomap.h> +#include <soc/spi.h> +#include <soc/clock.h> +#include <stdlib.h> +#include <string.h> #include <spi_flash.h> +#include <timer.h> + +static const struct blsp_spi spi_reg[] = { + /* BLSP0 registers for SPI interface */ + { + BLSP0_SPI_CONFIG_REG, + BLSP0_SPI_IO_CONTROL_REG, + BLSP0_SPI_ERROR_FLAGS_REG, + BLSP0_SPI_ERROR_FLAGS_EN_REG, + BLSP0_QUP_CONFIG_REG, + BLSP0_QUP_ERROR_FLAGS_REG, + BLSP0_QUP_ERROR_FLAGS_EN_REG, + BLSP0_QUP_OPERATIONAL_REG, + BLSP0_QUP_IO_MODES_REG, + BLSP0_QUP_STATE_REG, + BLSP0_QUP_INPUT_FIFOc_REG(0), + BLSP0_QUP_OUTPUT_FIFOc_REG(0), + BLSP0_QUP_MX_INPUT_COUNT_REG, + BLSP0_QUP_MX_OUTPUT_COUNT_REG, + BLSP0_QUP_SW_RESET_REG, + 0, + 0, + BLSP0_QUP_OPERATIONAL_MASK, + BLSP0_SPI_DEASSERT_WAIT_REG, + }, + {0}, {0}, {0}, + /* BLSP4 registers for SPI interface */ + { + BLSP4_SPI_CONFIG_REG, + BLSP4_SPI_IO_CONTROL_REG, + BLSP4_SPI_ERROR_FLAGS_REG, + BLSP4_SPI_ERROR_FLAGS_EN_REG, + BLSP4_QUP_CONFIG_REG, + BLSP4_QUP_ERROR_FLAGS_REG, + BLSP4_QUP_ERROR_FLAGS_EN_REG, + BLSP4_QUP_OPERATIONAL_REG, + BLSP4_QUP_IO_MODES_REG, + BLSP4_QUP_STATE_REG, + BLSP4_QUP_INPUT_FIFOc_REG(0), + BLSP4_QUP_OUTPUT_FIFOc_REG(0), + BLSP4_QUP_MX_INPUT_COUNT_REG, + BLSP4_QUP_MX_OUTPUT_COUNT_REG, + BLSP4_QUP_SW_RESET_REG, + 0, + 0, + BLSP4_QUP_OPERATIONAL_MASK, + BLSP4_SPI_DEASSERT_WAIT_REG, + }, + /* BLSP5 registers for SPI interface */ + { + BLSP5_SPI_CONFIG_REG, + BLSP5_SPI_IO_CONTROL_REG, + BLSP5_SPI_ERROR_FLAGS_REG, + BLSP5_SPI_ERROR_FLAGS_EN_REG, + BLSP5_QUP_CONFIG_REG, + BLSP5_QUP_ERROR_FLAGS_REG, + BLSP5_QUP_ERROR_FLAGS_EN_REG, + BLSP5_QUP_OPERATIONAL_REG, + BLSP5_QUP_IO_MODES_REG, + BLSP5_QUP_STATE_REG, + BLSP5_QUP_INPUT_FIFOc_REG(0), + BLSP5_QUP_OUTPUT_FIFOc_REG(0), + BLSP5_QUP_MX_INPUT_COUNT_REG, + BLSP5_QUP_MX_OUTPUT_COUNT_REG, + BLSP5_QUP_SW_RESET_REG, + 0, + 0, + BLSP5_QUP_OPERATIONAL_MASK, + BLSP5_SPI_DEASSERT_WAIT_REG, + }, +}; + +static int check_bit_state(void *reg_addr, int mask, + int val, int us_delay) +{ + unsigned int count = TIMEOUT_CNT; + + while ((read32(reg_addr) & mask) != val) { + count--; + if (count == 0) + return -ETIMEDOUT; + udelay(us_delay); + } + + return SUCCESS; +} + +/* + * Check whether QUPn State is valid + */ +static int check_qup_state_valid(struct qcs_spi_slave *ds) +{ + return check_bit_state(ds->regs->qup_state, QUP_STATE_VALID_MASK, + QUP_STATE_VALID, 1); +} + +/* + * Configure QUPn Core state + */ +static int config_spi_state(struct qcs_spi_slave *ds, unsigned int state) +{ + uint32_t val; + int ret = SUCCESS; + + ret = check_qup_state_valid(ds); + if (ret != SUCCESS) + return ret; + + switch (state) { + case QUP_STATE_RUN: + /* Set the state to RUN */ + val = ((read32(ds->regs->qup_state) & ~QUP_STATE_MASK) + | QUP_STATE_RUN); + write32(ds->regs->qup_state, val); + ret = check_qup_state_valid(ds); + break; + case QUP_STATE_RESET: + /* Set the state to RESET */ + val = ((read32(ds->regs->qup_state) & ~QUP_STATE_MASK) + | QUP_STATE_RESET); + write32(ds->regs->qup_state, val); + ret = check_qup_state_valid(ds); + break; + default: + printk(BIOS_ERR, "unsupported QUP SPI state : %d\n", state); + ret = -EINVAL; + break; + } + + return ret; +} + +/* + * Set QUPn SPI Mode + */ +static void spi_set_mode(struct qcs_spi_slave *ds, unsigned int mode) +{ + unsigned int clk_idle_state; + unsigned int input_first_mode; + uint32_t val; + + switch (mode) { + case SPI_MODE0: + clk_idle_state = 0; + input_first_mode = SPI_CONFIG_INPUT_FIRST; + break; + case SPI_MODE1: + clk_idle_state = 0; + input_first_mode = 0; + break; + case SPI_MODE2: + clk_idle_state = 1; + input_first_mode = SPI_CONFIG_INPUT_FIRST; + break; + case SPI_MODE3: + clk_idle_state = 1; + input_first_mode = 0; + break; + default: + printk(BIOS_ERR, "unsupported spi mode : %d\n", mode); + return; + } + + val = read32(ds->regs->spi_config); + val |= input_first_mode; + write32(ds->regs->spi_config, val); + val = read32(ds->regs->io_control); + + if (clk_idle_state) + val |= SPI_IO_CTRL_CLOCK_IDLE_HIGH; + else + val &= ~SPI_IO_CTRL_CLOCK_IDLE_HIGH; + + write32(ds->regs->io_control, val); +} + +/* + * Reset entire QUP and all mini cores + */ +static void spi_reset(struct qcs_spi_slave *ds) +{ + write32(ds->regs->qup_sw_reset, 0x1); + udelay(5); + check_qup_state_valid(ds); +} + +static struct qcs_spi_slave spi_slave_pool[3]; + +static struct qcs_spi_slave *to_qcs_spi(const struct spi_slave *slave) +{ + struct qcs_spi_slave *ds; + size_t i; + + for (i = 0; i < ARRAY_SIZE(spi_slave_pool); i++) { + ds = spi_slave_pool + i; + + if (!ds->allocated) + continue; + + if ((ds->slave.bus == slave->bus) && + (ds->slave.cs == slave->cs)) + return ds; + } + + return NULL; +} + +static void write_force_cs(const struct spi_slave *slave, int assert) +{ + struct qcs_spi_slave *ds = to_qcs_spi(slave); + if (assert) + clrsetbits_le32(ds->regs->io_control, + SPI_IO_CTRL_FORCE_CS_MSK, SPI_IO_CTRL_FORCE_CS_EN); + else + clrsetbits_le32(ds->regs->io_control, + SPI_IO_CTRL_FORCE_CS_MSK, SPI_IO_CTRL_FORCE_CS_DIS); +} + +/* + * BLSP QUPn SPI Hardware Initialisation + */ +static int spi_hw_init(struct qcs_spi_slave *ds) +{ + int ret; + + ds->initialized = 0; + + /* QUPn module configuration */ + spi_reset(ds); + + /* Set the QUPn state */ + ret = config_spi_state(ds, QUP_STATE_RESET); + if (ret) + return ret; + + /* + * Configure Mini core to SPI core with Input Output enabled, + * SPI master, N = 8 bits + */ + clrsetbits_le32(ds->regs->qup_config, QUP_CONFIG_MINI_CORE_MSK | + QUP_CONF_INPUT_MSK | + QUP_CONF_OUTPUT_MSK | + QUP_CONF_N_MASK, + QUP_CONFIG_MINI_CORE_SPI | + QUP_CONF_INPUT_ENA | + QUP_CONF_OUTPUT_ENA | + QUP_CONF_N_SPI_8_BIT_WORD); + + /* + * Configure Input first SPI protocol, + * SPI master mode and no loopback + */ + clrsetbits_le32(ds->regs->spi_config, SPI_CONFIG_LOOP_BACK_MSK | + SPI_CONFIG_NO_SLAVE_OPER_MSK, + SPI_CONFIG_NO_LOOP_BACK | + SPI_CONFIG_NO_SLAVE_OPER); + + /* + * Configure SPI IO Control Register + * CLK_ALWAYS_ON = 0 + * MX_CS_MODE = 0 + * NO_TRI_STATE = 1 + */ + write32(ds->regs->io_control, SPI_IO_CTRL_CLK_ALWAYS_ON | + SPI_IO_CTRL_NO_TRI_STATE | SPI_IO_CTRL_MX_CS_MODE); + + /* + * Configure SPI IO Modes. + * OUTPUT_BIT_SHIFT_EN = 1 + * INPUT_MODE = Block Mode + * OUTPUT MODE = Block Mode + */ + clrsetbits_le32(ds->regs->qup_io_modes, + QUP_IO_MODES_OUTPUT_BIT_SHIFT_MSK | + QUP_IO_MODES_INPUT_MODE_MSK | + QUP_IO_MODES_OUTPUT_MODE_MSK, + QUP_IO_MODES_OUTPUT_BIT_SHIFT_EN | + QUP_IO_MODES_INPUT_BLOCK_MODE | + QUP_IO_MODES_OUTPUT_BLOCK_MODE); + + spi_set_mode(ds, ds->mode); + + /* Disable Error mask */ + write32(ds->regs->error_flags_en, 0); + write32(ds->regs->qup_error_flags_en, 0); + write32(ds->regs->qup_deassert_wait, 0); + + ds->initialized = 1; + + return SUCCESS; +}
static int spi_ctrlr_claim_bus(const struct spi_slave *slave) { - return 0; + struct qcs_spi_slave *ds = to_qcs_spi(slave); + unsigned int ret; + + ret = spi_hw_init(ds); + if (ret) + return -EIO; + switch (slave->bus) { + case 4: + gpio_configure + (GPIO(37), 2, GPIO_PULL_DOWN, GPIO_6MA, GPIO_INPUT); // MOSI + gpio_configure + (GPIO(38), 2, GPIO_PULL_DOWN, GPIO_6MA, GPIO_OUTPUT); // MISO + gpio_configure + (GPIO(117), 2, GPIO_NO_PULL, GPIO_6MA, GPIO_OUTPUT); // CS + gpio_configure + (GPIO(118), 2, GPIO_PULL_DOWN, GPIO_6MA, GPIO_OUTPUT);// CLK + break; + case 5: + gpio_configure + (GPIO(26), 3, GPIO_NO_PULL, GPIO_16MA, GPIO_INPUT); // MOSI + gpio_configure + (GPIO(27), 3, GPIO_NO_PULL, GPIO_16MA, GPIO_INPUT); // MISO + gpio_configure + (GPIO(28), 4, GPIO_PULL_UP, GPIO_16MA, GPIO_INPUT); // CS + gpio_configure + (GPIO(29), 4, GPIO_NO_PULL, GPIO_16MA, GPIO_INPUT); // CLK + break; + default: + printk(BIOS_ERR, "SPI error: unsupported bus %d " + "(Supported buses 0, 1, 2, 3, 4, 5)\n", slave->bus); + break; + } + write_force_cs(slave, 1); + + return SUCCESS; }
static void spi_ctrlr_release_bus(const struct spi_slave *slave) { + struct qcs_spi_slave *ds = to_qcs_spi(slave);
+ /* Reset the SPI hardware */ + write_force_cs(slave, 0); + spi_reset(ds); + ds->initialized = 0; }
-static int spi_ctrlr_xfer(const struct spi_slave *slave, const void *dout, - size_t bytes_out, void *din, size_t bytes_in) +/* + * Function to write data to OUTPUT FIFO + */ +static void spi_write_byte(struct qcs_spi_slave *ds, unsigned char data) { + /* Wait for space in the FIFO */ + while ((read32(ds->regs->qup_operational) & OUTPUT_FIFO_FULL)) + udelay(1); + + /* Write the byte of data */ + write32(ds->regs->qup_output_fifo, data); +} + +/* + * Function to read data from Input FIFO + */ +static unsigned char spi_read_byte(struct qcs_spi_slave *ds) +{ + /* Wait for Data in FIFO */ + while (!(read32(ds->regs->qup_operational) & INPUT_FIFO_NOT_EMPTY)) + udelay(1); + + /* Read a byte of data */ + return read32(ds->regs->qup_input_fifo) & 0xff; +} + +/* + * Function to check wheather Input or Output FIFO + * has data to be serviced + */ +static int check_fifo_status(void *reg_addr) +{ + unsigned int count = TIMEOUT_CNT; + unsigned int status_flag; + unsigned int val; + + do { + val = read32(reg_addr); + count--; + if (count == 0) + return -ETIMEDOUT; + status_flag = ((val & OUTPUT_SERVICE_FLAG) | + (val & INPUT_SERVICE_FLAG)); + } while (!status_flag); + + return SUCCESS; +} + +/* + * Function to configure Input and Output enable/disable + */ +static void enable_io_config(struct qcs_spi_slave *ds, + uint32_t write_cnt, uint32_t read_cnt) +{ + + if (write_cnt) { + clrsetbits_le32(ds->regs->qup_config, + QUP_CONF_OUTPUT_MSK, QUP_CONF_OUTPUT_ENA); + } else { + clrsetbits_le32(ds->regs->qup_config, + QUP_CONF_OUTPUT_MSK, QUP_CONF_NO_OUTPUT); + } + + if (read_cnt) { + clrsetbits_le32(ds->regs->qup_config, + QUP_CONF_INPUT_MSK, QUP_CONF_INPUT_ENA); + } else { + clrsetbits_le32(ds->regs->qup_config, + QUP_CONF_INPUT_MSK, QUP_CONF_NO_INPUT); + } +} + +/* + * Function to read bytes number of data from the Input FIFO + */ +static int __blsp_spi_read(struct qcs_spi_slave *ds, u8 *data_buffer, + unsigned int bytes) +{ + uint32_t val; + unsigned int i; + unsigned int fifo_count; + int ret = SUCCESS; + int state_config; + struct stopwatch sw; + + /* Configure no of bytes to read */ + state_config = config_spi_state(ds, QUP_STATE_RESET); + if (state_config) + return state_config; + + /* Configure input and output enable */ + enable_io_config(ds, 0, bytes); + + write32(ds->regs->qup_mx_input_count, bytes); + + state_config = config_spi_state(ds, QUP_STATE_RUN); + if (state_config) + return state_config; + + while (bytes) { + ret = check_fifo_status(ds->regs->qup_operational); + if (ret != SUCCESS) + goto out; + + val = read32(ds->regs->qup_operational); + if (val & INPUT_SERVICE_FLAG) { + /* + * acknowledge to hw that software will + * read input data + */ + val &= INPUT_SERVICE_FLAG; + write32(ds->regs->qup_operational, val); + + fifo_count = ((bytes > SPI_INPUT_BLOCK_SIZE) ? + SPI_INPUT_BLOCK_SIZE : bytes); + + for (i = 0; i < fifo_count; i++) { + *data_buffer = spi_read_byte(ds); + data_buffer++; + bytes--; + } + } + } + + stopwatch_init_msecs_expire(&sw, 10); + + do { + val = read32(ds->regs->qup_operational); + if (stopwatch_expired(&sw)) { + printk(BIOS_ERR, "SPI FIFO read timeout\n"); + ret = -ETIMEDOUT; + goto out; + } + } while (!(val & MAX_INPUT_DONE_FLAG)); + +out: + /* + * Put the SPI Core back in the Reset State + * to end the transfer + */ + (void)config_spi_state(ds, QUP_STATE_RESET); + return ret; +} + +static int blsp_spi_read(struct qcs_spi_slave *ds, u8 *data_buffer, + unsigned int bytes) +{ + int length, ret; + + while (bytes) { + length = (bytes < MAX_COUNT_SIZE) ? bytes : MAX_COUNT_SIZE; + + ret = __blsp_spi_read(ds, data_buffer, length); + if (ret != SUCCESS) + return ret; + + data_buffer += length; + bytes -= length; + } + return 0; }
+/* + * Function to write data to the Output FIFO + */ +static int __blsp_spi_write(struct qcs_spi_slave *ds, const u8 *cmd_buffer, + unsigned int bytes) +{ + uint32_t val; + unsigned int i; + unsigned int write_len = bytes; + unsigned int read_len = bytes; + unsigned int fifo_count; + int ret = SUCCESS; + int state_config; + struct stopwatch sw; + + state_config = config_spi_state(ds, QUP_STATE_RESET); + if (state_config) + return state_config; + + /* Configure input and output enable */ + enable_io_config(ds, write_len, read_len); + /* No of bytes to be written in Output FIFO */ + write32(ds->regs->qup_mx_output_count, bytes); + write32(ds->regs->qup_mx_input_count, bytes); + state_config = config_spi_state(ds, QUP_STATE_RUN); + + if (state_config) + return state_config; + + /* + * read_len considered to ensure that we read the dummy data for the + * write we performed. This is needed to ensure with WR-RD transaction + * to get the actual data on the subsequent read cycle that happens + */ + while (write_len || read_len) { + ret = check_fifo_status(ds->regs->qup_operational); + if (ret != SUCCESS) + goto out; + + val = read32(ds->regs->qup_operational); + if (val & OUTPUT_SERVICE_FLAG) { + /* + * acknowledge to hw that software will write + * expected output data + */ + val &= OUTPUT_SERVICE_FLAG; + write32(ds->regs->qup_operational, val); + + if (write_len > SPI_OUTPUT_BLOCK_SIZE) + fifo_count = SPI_OUTPUT_BLOCK_SIZE; + else + fifo_count = write_len; + + for (i = 0; i < fifo_count; i++) { + /* Write actual data to output FIFO */ + spi_write_byte(ds, *cmd_buffer); + cmd_buffer++; + write_len--; + } + } + + if (val & INPUT_SERVICE_FLAG) { + /* + * acknowledge to hw that software + * will read input data + */ + val &= INPUT_SERVICE_FLAG; + write32(ds->regs->qup_operational, val); + + if (read_len > SPI_INPUT_BLOCK_SIZE) + fifo_count = SPI_INPUT_BLOCK_SIZE; + else + fifo_count = read_len; + + for (i = 0; i < fifo_count; i++) { + /* Read dummy data for the data written */ + (void)spi_read_byte(ds); + + /* Decrement the read count after reading the + * dummy data from the device. This is to make + * sure we read dummy data before we write the + * data to fifo + */ + read_len--; + } + } + } + + stopwatch_init_msecs_expire(&sw, 10); + + do { + val = read32(ds->regs->qup_operational); + if (stopwatch_expired(&sw)) { + printk(BIOS_ERR, "SPI FIFO write timeout\n"); + ret = -ETIMEDOUT; + goto out; + } + + } while (!(val & MAX_OUTPUT_DONE_FLAG)); + +out: + /* + * Put the SPI Core back in the Reset State + * to end the transfer + */ + (void)config_spi_state(ds, QUP_STATE_RESET); + + return ret; +} + +static int blsp_spi_write(struct qcs_spi_slave *ds, u8 *cmd_buffer, + unsigned int bytes) +{ + int length, ret; + + while (bytes) { + length = (bytes < MAX_COUNT_SIZE) ? bytes : MAX_COUNT_SIZE; + + ret = __blsp_spi_write(ds, cmd_buffer, length); + if (ret != SUCCESS) { + printk(BIOS_ERR, "SPI:DBG write not success\n"); + return ret; + } + + cmd_buffer += length; + bytes -= length; + } + + return 0; +} + +/* + * This function is invoked with either tx_buf or rx_buf. + * Calling this function with both null does a chip select change. + */ +static int spi_ctrlr_xfer(const struct spi_slave *slave, const void *dout, + size_t out_bytes, void *din, size_t in_bytes) +{ + struct qcs_spi_slave *ds = to_qcs_spi(slave); + u8 *txp = (u8 *)dout; + u8 *rxp = (u8 *)din; + int ret; + + ret = config_spi_state(ds, QUP_STATE_RESET); + if (ret != SUCCESS) + return ret; + + if (dout != NULL) { + ret = blsp_spi_write(ds, txp, (unsigned int) out_bytes); + if (ret != SUCCESS) + goto out; + } + + if (din != NULL) { + ret = blsp_spi_read(ds, rxp, in_bytes); + if (ret != SUCCESS) + goto out; + } + +out: + /* + * Put the SPI Core back in the Reset State + * to end the transfer + */ + (void)config_spi_state(ds, QUP_STATE_RESET); + + return ret; +} + +static int spi_ctrlr_setup(const struct spi_slave *slave) +{ + struct qcs_spi_slave *ds = NULL; + int i; + unsigned int bus = slave->bus; + unsigned int cs = slave->cs; + int qup = 0; + int blsp = 2; + + if (((bus != BLSP4_SPI) && (bus != BLSP5_SPI)) || cs != 0) { + printk(BIOS_ERR, + "SPI error: unsupported bus %d or cs %d\n", bus, cs); + return -1; + } + + for (i = 0; i < ARRAY_SIZE(spi_slave_pool); i++) { + if (spi_slave_pool[i].allocated) + continue; + ds = spi_slave_pool + i; + ds->slave.bus = bus; + ds->slave.cs = cs; + ds->regs = &spi_reg[bus]; + ds->mode = SPI_MODE0; + ds->freq = 50000000; + + if (bus == BLSP4_SPI) { + ds->freq = 1000000; + qup = 4; + blsp = 1; + } + + clock_configure_spi(blsp, qup, ds->freq); + clock_enable_spi(blsp, qup); + + ds->allocated = 1; + + return 0; + } + + printk(BIOS_ERR, "SPI error: all %d pools busy\n", i); + return -1; +} + +static int xfer_vectors(const struct spi_slave *slave, + struct spi_op vectors[], size_t count) +{ + return spi_flash_vector_helper(slave, vectors, count, spi_ctrlr_xfer); +} + static const struct spi_ctrlr spi_ctrlr = { + .setup = spi_ctrlr_setup, .claim_bus = spi_ctrlr_claim_bus, .release_bus = spi_ctrlr_release_bus, .xfer = spi_ctrlr_xfer, - .max_xfer_size = 65535, + .xfer_vector = xfer_vectors, + .max_xfer_size = MAX_PACKET_COUNT, };
const struct spi_ctrlr_buses spi_ctrlr_bus_map[] = { { .ctrlr = &spi_ctrlr, - .bus_start = 0, - .bus_end = 0, + .bus_start = BLSP5_SPI, + .bus_end = BLSP5_SPI, + }, + { + .ctrlr = &spi_ctrlr, + .bus_start = BLSP4_SPI, + .bus_end = BLSP4_SPI, }, };
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