#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 <spi_flash.h>
#include <timer.h>

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Functions
static int	check_bit_state (void *reg_addr, int mask, int val, int us_delay)

static int	check_qup_state_valid (struct qcs_spi_slave *ds)

static int	config_spi_state (struct qcs_spi_slave *ds, unsigned int state)

static void	spi_set_mode (struct qcs_spi_slave *ds, unsigned int mode)

static void	spi_reset (struct qcs_spi_slave *ds)

static struct qcs_spi_slave *	to_qcs_spi (const struct spi_slave *slave)

static void	write_force_cs (const struct spi_slave *slave, int assert)

static int	spi_hw_init (struct qcs_spi_slave *ds)

static int	spi_ctrlr_claim_bus (const struct spi_slave *slave)

static void	spi_ctrlr_release_bus (const struct spi_slave *slave)

static void	spi_write_byte (struct qcs_spi_slave *ds, unsigned char data)

static unsigned char	spi_read_byte (struct qcs_spi_slave *ds)

static int	check_fifo_status (void *reg_addr)

static void	enable_io_config (struct qcs_spi_slave *ds, uint32_t write_cnt, uint32_t read_cnt)

static int	__blsp_spi_read (struct qcs_spi_slave ds, u8 data_buffer, unsigned int bytes)

static int	blsp_spi_read (struct qcs_spi_slave ds, u8 data_buffer, unsigned int bytes)

static int	__blsp_spi_write (struct qcs_spi_slave ds, const u8 cmd_buffer, unsigned int bytes)

static int	blsp_spi_write (struct qcs_spi_slave ds, u8 cmd_buffer, unsigned int bytes)

static int	spi_ctrlr_xfer (const struct spi_slave slave, const void dout, size_t out_bytes, void *din, size_t in_bytes)

static int	spi_ctrlr_setup (const struct spi_slave *slave)

static int	xfer_vectors (const struct spi_slave *slave, struct spi_op vectors[], size_t count)

Variables
static const struct blsp_spi	spi_reg []

static struct qcs_spi_slave	spi_slave_pool [3]

static const struct spi_ctrlr	spi_ctrlr

const struct spi_ctrlr_buses	spi_ctrlr_bus_map []

const size_t	spi_ctrlr_bus_map_count = ARRAY_SIZE(spi_ctrlr_bus_map)

Function Documentation

◆ __blsp_spi_read()

static int __blsp_spi_read	(	struct qcs_spi_slave *	ds,
		u8 *	data_buffer,
		unsigned int	bytes
	)

static

Definition at line 427 of file spi.c.

References BIOS_ERR, check_fifo_status(), config_spi_state(), enable_io_config(), ETIMEDOUT, INPUT_SERVICE_FLAG, MAX_INPUT_DONE_FLAG, printk, blsp_spi::qup_mx_input_count, blsp_spi::qup_operational, QUP_STATE_RESET, QUP_STATE_RUN, read32(), qcs_spi_slave::regs, SPI_INPUT_BLOCK_SIZE, spi_read_byte(), stopwatch_expired(), stopwatch_init_msecs_expire(), SUCCESS, val, void(), and write32().

Referenced by blsp_spi_read().

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◆ __blsp_spi_write()

static int __blsp_spi_write	(	struct qcs_spi_slave *	ds,
		const u8 *	cmd_buffer,
		unsigned int	bytes
	)

static

Definition at line 518 of file spi.c.

References BIOS_ERR, check_fifo_status(), config_spi_state(), enable_io_config(), ETIMEDOUT, INPUT_SERVICE_FLAG, MAX_OUTPUT_DONE_FLAG, OUTPUT_SERVICE_FLAG, printk, blsp_spi::qup_mx_input_count, blsp_spi::qup_mx_output_count, blsp_spi::qup_operational, QUP_STATE_RESET, QUP_STATE_RUN, read32(), qcs_spi_slave::regs, SPI_INPUT_BLOCK_SIZE, SPI_OUTPUT_BLOCK_SIZE, spi_read_byte(), spi_write_byte(), stopwatch_expired(), stopwatch_init_msecs_expire(), SUCCESS, val, void(), and write32().

Referenced by blsp_spi_write().

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◆ blsp_spi_read()

static int blsp_spi_read	(	struct qcs_spi_slave *	ds,
		u8 *	data_buffer,
		unsigned int	bytes
	)

static

Definition at line 496 of file spi.c.

References __blsp_spi_read(), length, MAX_COUNT_SIZE, and SUCCESS.

Referenced by spi_ctrlr_xfer().

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◆ blsp_spi_write()

static int blsp_spi_write	(	struct qcs_spi_slave *	ds,
		u8 *	cmd_buffer,
		unsigned int	bytes
	)

static

Definition at line 625 of file spi.c.

References __blsp_spi_write(), BIOS_ERR, length, MAX_COUNT_SIZE, printk, and SUCCESS.

Referenced by spi_ctrlr_xfer().

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◆ check_bit_state()

static int check_bit_state	(	void *	reg_addr,
		int	mask,
		int	val,
		int	us_delay
	)

static

Definition at line 83 of file spi.c.

References count, ETIMEDOUT, mask, read32(), SUCCESS, TIMEOUT_CNT, udelay(), and val.

Referenced by check_qup_state_valid().

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◆ check_fifo_status()

static int check_fifo_status ( void * reg_addr )

static

Definition at line 382 of file spi.c.

References count, ETIMEDOUT, INPUT_SERVICE_FLAG, OUTPUT_SERVICE_FLAG, read32(), SUCCESS, TIMEOUT_CNT, and val.

Referenced by __blsp_spi_read(), and __blsp_spi_write().

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◆ check_qup_state_valid()

static int check_qup_state_valid ( struct qcs_spi_slave * ds )

static

Definition at line 101 of file spi.c.

References check_bit_state(), blsp_spi::qup_state, QUP_STATE_VALID, QUP_STATE_VALID_MASK, and qcs_spi_slave::regs.

Referenced by config_spi_state(), and spi_reset().

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◆ config_spi_state()

static int config_spi_state	(	struct qcs_spi_slave *	ds,
		unsigned int	state
	)

static

Definition at line 110 of file spi.c.

References BIOS_ERR, check_qup_state_valid(), EINVAL, printk, blsp_spi::qup_state, QUP_STATE_MASK, QUP_STATE_RESET, QUP_STATE_RUN, read32(), qcs_spi_slave::regs, SUCCESS, val, and write32().

Referenced by __blsp_spi_read(), __blsp_spi_write(), spi_ctrlr_xfer(), and spi_hw_init().

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◆ enable_io_config()

static void enable_io_config	(	struct qcs_spi_slave *	ds,
		uint32_t	write_cnt,
		uint32_t	read_cnt
	)

static

Definition at line 403 of file spi.c.

References clrsetbits32, QUP_CONF_INPUT_ENA, QUP_CONF_INPUT_MSK, QUP_CONF_NO_INPUT, QUP_CONF_NO_OUTPUT, QUP_CONF_OUTPUT_ENA, QUP_CONF_OUTPUT_MSK, blsp_spi::qup_config, and qcs_spi_slave::regs.

Referenced by __blsp_spi_read(), and __blsp_spi_write().

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◆ spi_ctrlr_claim_bus()

static int spi_ctrlr_claim_bus ( const struct spi_slave * slave )

static

Definition at line 303 of file spi.c.

References BIOS_ERR, spi_slave::bus, EIO, GPIO, GPIO_16MA, GPIO_6MA, gpio_configure(), GPIO_INPUT, GPIO_NO_PULL, GPIO_OUTPUT, GPIO_PULL_DOWN, GPIO_PULL_UP, printk, slave, spi_hw_init(), SUCCESS, to_qcs_spi(), and write_force_cs().

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◆ spi_ctrlr_release_bus()

static void spi_ctrlr_release_bus ( const struct spi_slave * slave )

static

Definition at line 342 of file spi.c.

References qcs_spi_slave::initialized, slave, spi_reset(), to_qcs_spi(), and write_force_cs().

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◆ spi_ctrlr_setup()

static int spi_ctrlr_setup ( const struct spi_slave * slave )

static

Definition at line 684 of file spi.c.

References qcs_spi_slave::allocated, ARRAY_SIZE, BIOS_ERR, BLSP4_SPI, BLSP5_SPI, spi_slave::bus, clock_configure_spi(), clock_enable_spi(), spi_slave::cs, qcs_spi_slave::freq, qcs_spi_slave::mode, NULL, printk, qcs_spi_slave::regs, slave, qcs_spi_slave::slave, SPI_MODE0, spi_reg, and spi_slave_pool.

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◆ spi_ctrlr_xfer()

static int spi_ctrlr_xfer	(	const struct spi_slave *	slave,
		const void *	dout,
		size_t	out_bytes,
		void *	din,
		size_t	in_bytes
	)

static

Definition at line 650 of file spi.c.

References blsp_spi_read(), blsp_spi_write(), config_spi_state(), NULL, QUP_STATE_RESET, slave, SUCCESS, to_qcs_spi(), and void().

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◆ spi_hw_init()

static int spi_hw_init ( struct qcs_spi_slave * ds )

static

Definition at line 232 of file spi.c.

References clrsetbits32, config_spi_state(), blsp_spi::error_flags_en, qcs_spi_slave::initialized, blsp_spi::io_control, qcs_spi_slave::mode, QUP_CONF_INPUT_ENA, QUP_CONF_INPUT_MSK, QUP_CONF_N_MASK, QUP_CONF_N_SPI_8_BIT_WORD, QUP_CONF_OUTPUT_ENA, QUP_CONF_OUTPUT_MSK, blsp_spi::qup_config, QUP_CONFIG_MINI_CORE_MSK, QUP_CONFIG_MINI_CORE_SPI, blsp_spi::qup_deassert_wait, blsp_spi::qup_error_flags_en, blsp_spi::qup_io_modes, QUP_IO_MODES_INPUT_BLOCK_MODE, QUP_IO_MODES_INPUT_MODE_MSK, QUP_IO_MODES_OUTPUT_BIT_SHIFT_EN, QUP_IO_MODES_OUTPUT_BIT_SHIFT_MSK, QUP_IO_MODES_OUTPUT_BLOCK_MODE, QUP_IO_MODES_OUTPUT_MODE_MSK, QUP_STATE_RESET, qcs_spi_slave::regs, blsp_spi::spi_config, SPI_CONFIG_LOOP_BACK_MSK, SPI_CONFIG_NO_LOOP_BACK, SPI_CONFIG_NO_SLAVE_OPER, SPI_CONFIG_NO_SLAVE_OPER_MSK, SPI_IO_CTRL_CLK_ALWAYS_ON, SPI_IO_CTRL_MX_CS_MODE, SPI_IO_CTRL_NO_TRI_STATE, spi_reset(), spi_set_mode(), SUCCESS, and write32().

Referenced by spi_ctrlr_claim_bus().

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◆ spi_read_byte()

static unsigned char spi_read_byte ( struct qcs_spi_slave * ds )

static

Definition at line 368 of file spi.c.

References INPUT_FIFO_NOT_EMPTY, blsp_spi::qup_input_fifo, blsp_spi::qup_operational, read32(), qcs_spi_slave::regs, and udelay().

Referenced by __blsp_spi_read(), and __blsp_spi_write().

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◆ spi_reset()

static void spi_reset ( struct qcs_spi_slave * ds )

static

Definition at line 190 of file spi.c.

References check_qup_state_valid(), blsp_spi::qup_sw_reset, qcs_spi_slave::regs, udelay(), and write32().

Referenced by spi_ctrlr_release_bus(), and spi_hw_init().

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◆ spi_set_mode()

static void spi_set_mode	(	struct qcs_spi_slave *	ds,
		unsigned int	mode
	)

static

Definition at line 146 of file spi.c.

References BIOS_ERR, blsp_spi::io_control, printk, read32(), qcs_spi_slave::regs, blsp_spi::spi_config, SPI_CONFIG_INPUT_FIRST, SPI_IO_CTRL_CLOCK_IDLE_HIGH, SPI_MODE0, SPI_MODE1, SPI_MODE2, SPI_MODE3, val, and write32().

Referenced by spi_hw_init().

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◆ spi_write_byte()

static void spi_write_byte	(	struct qcs_spi_slave *	ds,
		unsigned char	data
	)

static

Definition at line 355 of file spi.c.

References OUTPUT_FIFO_FULL, blsp_spi::qup_operational, blsp_spi::qup_output_fifo, read32(), qcs_spi_slave::regs, udelay(), and write32().

Referenced by __blsp_spi_write().

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◆ to_qcs_spi()

static struct qcs_spi_slave* to_qcs_spi ( const struct spi_slave * slave )

static

Definition at line 199 of file spi.c.

References qcs_spi_slave::allocated, ARRAY_SIZE, spi_slave::bus, spi_slave::cs, NULL, slave, qcs_spi_slave::slave, and spi_slave_pool.

Referenced by spi_ctrlr_claim_bus(), spi_ctrlr_release_bus(), spi_ctrlr_xfer(), and write_force_cs().

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◆ write_force_cs()

static void write_force_cs	(	const struct spi_slave *	slave,
		int	assert
	)

static

Definition at line 218 of file spi.c.

References assert, clrsetbits32, blsp_spi::io_control, qcs_spi_slave::regs, slave, SPI_IO_CTRL_FORCE_CS_DIS, SPI_IO_CTRL_FORCE_CS_EN, SPI_IO_CTRL_FORCE_CS_MSK, and to_qcs_spi().

Referenced by spi_ctrlr_claim_bus(), and spi_ctrlr_release_bus().

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◆ xfer_vectors()

static int xfer_vectors	(	const struct spi_slave *	slave,
		struct spi_op	vectors[],
		size_t	count
	)

static

Definition at line 727 of file spi.c.

Variable Documentation

◆ spi_ctrlr

const struct spi_ctrlr spi_ctrlr

static

Initial value:

= {
        .setup = spi_ctrlr_setup,
        .claim_bus = spi_ctrlr_claim_bus,
        .release_bus = spi_ctrlr_release_bus,
        .xfer = spi_ctrlr_xfer,
        .xfer_vector = xfer_vectors,
        .max_xfer_size = MAX_PACKET_COUNT,
}

Definition at line 727 of file spi.c.

◆ spi_ctrlr_bus_map

const struct spi_ctrlr_buses spi_ctrlr_bus_map[]

Initial value:

= {
        {
                .ctrlr = &spi_ctrlr,
                .bus_start = BLSP5_SPI,
                .bus_end = BLSP5_SPI,
        },
        {
                .ctrlr = &spi_ctrlr,
                .bus_start = BLSP4_SPI,
                .bus_end = BLSP4_SPI,
        },
}

Definition at line 727 of file spi.c.

◆ spi_ctrlr_bus_map_count

const size_t spi_ctrlr_bus_map_count = ARRAY_SIZE(spi_ctrlr_bus_map)

Definition at line 755 of file spi.c.

◆ spi_reg

const struct blsp_spi spi_reg[]

static

Definition at line 1 of file spi.c.

Referenced by spi_ctrlr_setup().

◆ spi_slave_pool

struct qcs_spi_slave spi_slave_pool[3]

static

Definition at line 190 of file spi.c.

Referenced by spi_ctrlr_setup(), and to_qcs_spi().

Functions

Variables

Function Documentation

◆ __blsp_spi_read()

◆ __blsp_spi_write()

◆ blsp_spi_read()

◆ blsp_spi_write()

◆ check_bit_state()

◆ check_fifo_status()

◆ check_qup_state_valid()

◆ config_spi_state()

◆ enable_io_config()

◆ spi_ctrlr_claim_bus()

◆ spi_ctrlr_release_bus()

◆ spi_ctrlr_setup()

◆ spi_ctrlr_xfer()

◆ spi_hw_init()

◆ spi_read_byte()

◆ spi_reset()

◆ spi_set_mode()

◆ spi_write_byte()

◆ to_qcs_spi()

◆ write_force_cs()

◆ xfer_vectors()

Variable Documentation

◆ spi_ctrlr

◆ spi_ctrlr_bus_map

◆ spi_ctrlr_bus_map_count

◆ spi_reg

◆ spi_slave_pool