qupv3_spi.c File Reference

#include <assert.h>
#include <lib.h>
#include <soc/clock.h>
#include <soc/gpio.h>
#include <soc/qcom_qup_se.h>
#include <soc/qup_se_handlers_common.h>
#include <soc/qupv3_config_common.h>
#include <soc/qupv3_spi_common.h>
#include <types.h>

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Macros
#define	LOOPBACK_ENABLE   0x1
#define	WORD_LEN_MSK   QC_GENMASK(9, 0)
#define	MIN_WORD_LEN   4
#define	TRANS_LEN_MSK   QC_GENMASK(23, 0)
#define	SPI_TX_ONLY   1
#define	SPI_RX_ONLY   2
#define	SPI_FULL_DUPLEX   3
#define	SPI_TX_RX   7
#define	SPI_CS_ASSERT   8
#define	SPI_CS_DEASSERT   9
#define	SPI_SCK_ONLY   10
#define	M_CMD_FRAGMENTATION   BIT(2)
#define	BITS_PER_BYTE   8
#define	BITS_PER_WORD   8
#define	TX_WATERMARK   1
#define	IRQ_TRIGGER

Functions
static void	setup_fifo_params (const struct spi_slave *slave)
static void	qup_setup_m_cmd (unsigned int se_bus, u32 cmd, u32 params)
int	qup_spi_xfer (const struct spi_slave *slave, const void *dout, size_t bytes_out, void *din, size_t bytes_in)
static int	spi_qup_set_cs (const struct spi_slave *slave, bool enable)
void	qup_spi_init (unsigned int bus, unsigned int speed_hz)
int	qup_spi_claim_bus (const struct spi_slave *slave)
void	qup_spi_release_bus (const struct spi_slave *slave)

Macro Definition Documentation

BITS_PER_BYTE

#define BITS_PER_BYTE   8

Definition at line 36 of file qupv3_spi.c.

BITS_PER_WORD

#define BITS_PER_WORD   8

Definition at line 37 of file qupv3_spi.c.

IRQ_TRIGGER

#define IRQ_TRIGGER

Value:

        (M_RX_FIFO_WATERMARK_EN | M_RX_FIFO_LAST_EN | \
        M_TX_FIFO_WATERMARK_EN | M_CMD_DONE_EN | \
        M_CMD_CANCEL_EN | M_CMD_ABORT_EN)

Definition at line 40 of file qupv3_spi.c.

LOOPBACK_ENABLE

#define LOOPBACK_ENABLE   0x1

Definition at line 14 of file qupv3_spi.c.

M_CMD_FRAGMENTATION

#define M_CMD_FRAGMENTATION   BIT(2)

Definition at line 34 of file qupv3_spi.c.

MIN_WORD_LEN

#define MIN_WORD_LEN   4

Definition at line 18 of file qupv3_spi.c.

SPI_CS_ASSERT

#define SPI_CS_ASSERT   8

Definition at line 28 of file qupv3_spi.c.

SPI_CS_DEASSERT

#define SPI_CS_DEASSERT   9

Definition at line 29 of file qupv3_spi.c.

SPI_FULL_DUPLEX

#define SPI_FULL_DUPLEX   3

Definition at line 26 of file qupv3_spi.c.

SPI_RX_ONLY

#define SPI_RX_ONLY   2

Definition at line 25 of file qupv3_spi.c.

SPI_SCK_ONLY

#define SPI_SCK_ONLY   10

Definition at line 30 of file qupv3_spi.c.

SPI_TX_ONLY

#define SPI_TX_ONLY   1

Definition at line 24 of file qupv3_spi.c.

SPI_TX_RX

#define SPI_TX_RX   7

Definition at line 27 of file qupv3_spi.c.

TRANS_LEN_MSK

#define TRANS_LEN_MSK   QC_GENMASK(23, 0)

Definition at line 21 of file qupv3_spi.c.

TX_WATERMARK

#define TX_WATERMARK   1

Definition at line 38 of file qupv3_spi.c.

WORD_LEN_MSK

#define WORD_LEN_MSK   QC_GENMASK(9, 0)

Definition at line 17 of file qupv3_spi.c.

Function Documentation

qup_setup_m_cmd()

static void qup_setup_m_cmd ( unsigned int  se_bus, u32  cmd, u32  params  )

static

Definition at line 69 of file qupv3_spi.c.

References M_OPCODE_SHFT, M_PARAMS_MSK, params, qup::regs, and write32().

Referenced by qup_spi_xfer(), and spi_qup_set_cs().

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qup_spi_claim_bus()

int qup_spi_claim_bus

(

const struct spi_slave *

slave

)

Definition at line 213 of file qupv3_spi.c.

References slave, and spi_qup_set_cs().

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qup_spi_init()

void qup_spi_init	(	unsigned int	bus,
		unsigned int	speed_hz
	)

Definition at line 157 of file qupv3_spi.c.

References AHB_SEC_SLV_CLK_CGC_ON, assert, CLK_DIV_SHFT, clock_enable_qup(), clrbits32, DEFAULT_CGC_EN, DEFAULT_IO_OUTPUT_CTRL_MSK, DEFAULT_SE_CLK, DMA_AHB_SLV_CFG_ON, DMA_RX_CLK_CGC_ON, DMA_RX_IRQ_EN, DMA_TX_CLK_CGC_ON, DMA_TX_IRQ_EN, FIFO_DEPTH, FORCE_DEFAULT, GENI_DMA_MODE_EN, GENI_M_IRQ_EN, GENI_S_IRQ_EN, GPIO_6MA, gpio_configure(), GPIO_INPUT, GPIO_NO_PULL, GPIO_OUTPUT, KHz, M_CMD_DONE_EN, M_COMMON_GENI_M_IRQ_EN, M_RX_FIFO_LAST_EN, M_RX_FIFO_WATERMARK_EN, M_TX_FIFO_WATERMARK_EN, MIXED, qupv3_se_fw_load_and_init(), qup::regs, S_CMD_DONE_EN, S_COMMON_GENI_S_IRQ_EN, SE_PROTOCOL_SPI, SER_CLK_EN, and write32().

Referenced by bootblock_mainboard_init().

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qup_spi_release_bus()

void qup_spi_release_bus

(

const struct spi_slave *

slave

)

Definition at line 218 of file qupv3_spi.c.

References slave, and spi_qup_set_cs().

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qup_spi_xfer()

int qup_spi_xfer	(	const struct spi_slave *	slave,
		const void *	dout,
		size_t	bytes_out,
		void *	din,
		size_t	bytes_in
	)

Definition at line 78 of file qupv3_spi.c.

References assert, spi_slave::bus, M_CMD_FRAGMENTATION, MAX, MIN, NULL, qup_handle_transfer(), qup_setup_m_cmd(), qup_spi_xfer(), qup::regs, setup_fifo_params(), slave, SPI_FULL_DUPLEX, SPI_RX_ONLY, SPI_TX_ONLY, stopwatch_init_msecs_expire(), TRANS_LEN_MSK, TX_WATERMARK, and write32().

Referenced by qup_spi_xfer().

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setup_fifo_params()

static void setup_fifo_params ( const struct spi_slave *  slave )

static

Definition at line 44 of file qupv3_spi.c.

References BITS_PER_WORD, spi_slave::bus, spi_slave::cs, log2(), MIN_WORD_LEN, PACK_VECTOR0, PACK_VECTOR1, PACK_VECTOR2, PACK_VECTOR3, qup::regs, slave, WORD_LEN_MSK, and write32().

Referenced by qup_spi_xfer().

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spi_qup_set_cs()

static int spi_qup_set_cs ( const struct spi_slave *  slave, bool  enable  )

static

Definition at line 128 of file qupv3_spi.c.

References BIOS_INFO, spi_slave::bus, M_CMD_DONE_EN, printk, qup_m_cancel_and_abort(), qup_setup_m_cmd(), qup_wait_for_m_irq(), slave, SPI_CS_ASSERT, SPI_CS_DEASSERT, stopwatch_expired(), stopwatch_init_usecs_expire(), and write32().

Referenced by qup_spi_claim_bus(), and qup_spi_release_bus().

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