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Diffstat (limited to 'qemu/roms/u-boot/drivers/spi/sh_qspi.c')
-rw-r--r--qemu/roms/u-boot/drivers/spi/sh_qspi.c278
1 files changed, 0 insertions, 278 deletions
diff --git a/qemu/roms/u-boot/drivers/spi/sh_qspi.c b/qemu/roms/u-boot/drivers/spi/sh_qspi.c
deleted file mode 100644
index 77ede6bba..000000000
--- a/qemu/roms/u-boot/drivers/spi/sh_qspi.c
+++ /dev/null
@@ -1,278 +0,0 @@
-/*
- * SH QSPI (Quad SPI) driver
- *
- * Copyright (C) 2013 Renesas Electronics Corporation
- * Copyright (C) 2013 Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
- *
- * SPDX-License-Identifier: GPL-2.0
- */
-
-#include <common.h>
-#include <malloc.h>
-#include <spi.h>
-#include <asm/arch/rmobile.h>
-#include <asm/io.h>
-
-/* SH QSPI register bit masks <REG>_<BIT> */
-#define SPCR_MSTR 0x08
-#define SPCR_SPE 0x40
-#define SPSR_SPRFF 0x80
-#define SPSR_SPTEF 0x20
-#define SPPCR_IO3FV 0x04
-#define SPPCR_IO2FV 0x02
-#define SPPCR_IO1FV 0x01
-#define SPBDCR_RXBC0 (1 << 0)
-#define SPCMD_SCKDEN (1 << 15)
-#define SPCMD_SLNDEN (1 << 14)
-#define SPCMD_SPNDEN (1 << 13)
-#define SPCMD_SSLKP (1 << 7)
-#define SPCMD_BRDV0 (1 << 2)
-#define SPCMD_INIT1 SPCMD_SCKDEN | SPCMD_SLNDEN | \
- SPCMD_SPNDEN | SPCMD_SSLKP | \
- SPCMD_BRDV0
-#define SPCMD_INIT2 SPCMD_SPNDEN | SPCMD_SSLKP | \
- SPCMD_BRDV0
-#define SPBFCR_TXRST (1 << 7)
-#define SPBFCR_RXRST (1 << 6)
-
-/* SH QSPI register set */
-struct sh_qspi_regs {
- unsigned char spcr;
- unsigned char sslp;
- unsigned char sppcr;
- unsigned char spsr;
- unsigned long spdr;
- unsigned char spscr;
- unsigned char spssr;
- unsigned char spbr;
- unsigned char spdcr;
- unsigned char spckd;
- unsigned char sslnd;
- unsigned char spnd;
- unsigned char dummy0;
- unsigned short spcmd0;
- unsigned short spcmd1;
- unsigned short spcmd2;
- unsigned short spcmd3;
- unsigned char spbfcr;
- unsigned char dummy1;
- unsigned short spbdcr;
- unsigned long spbmul0;
- unsigned long spbmul1;
- unsigned long spbmul2;
- unsigned long spbmul3;
-};
-
-struct sh_qspi_slave {
- struct spi_slave slave;
- struct sh_qspi_regs *regs;
-};
-
-static inline struct sh_qspi_slave *to_sh_qspi(struct spi_slave *slave)
-{
- return container_of(slave, struct sh_qspi_slave, slave);
-}
-
-static void sh_qspi_init(struct sh_qspi_slave *ss)
-{
- /* QSPI initialize */
- /* Set master mode only */
- writeb(SPCR_MSTR, &ss->regs->spcr);
-
- /* Set SSL signal level */
- writeb(0x00, &ss->regs->sslp);
-
- /* Set MOSI signal value when transfer is in idle state */
- writeb(SPPCR_IO3FV|SPPCR_IO2FV, &ss->regs->sppcr);
-
- /* Set bit rate. See 58.3.8 Quad Serial Peripheral Interface */
- writeb(0x01, &ss->regs->spbr);
-
- /* Disable Dummy Data Transmission */
- writeb(0x00, &ss->regs->spdcr);
-
- /* Set clock delay value */
- writeb(0x00, &ss->regs->spckd);
-
- /* Set SSL negation delay value */
- writeb(0x00, &ss->regs->sslnd);
-
- /* Set next-access delay value */
- writeb(0x00, &ss->regs->spnd);
-
- /* Set equence command */
- writew(SPCMD_INIT2, &ss->regs->spcmd0);
-
- /* Reset transfer and receive Buffer */
- setbits_8(&ss->regs->spbfcr, SPBFCR_TXRST|SPBFCR_RXRST);
-
- /* Clear transfer and receive Buffer control bit */
- clrbits_8(&ss->regs->spbfcr, SPBFCR_TXRST|SPBFCR_RXRST);
-
- /* Set equence control method. Use equence0 only */
- writeb(0x00, &ss->regs->spscr);
-
- /* Enable SPI function */
- setbits_8(&ss->regs->spcr, SPCR_SPE);
-}
-
-int spi_cs_is_valid(unsigned int bus, unsigned int cs)
-{
- return 1;
-}
-
-void spi_cs_activate(struct spi_slave *slave)
-{
- struct sh_qspi_slave *ss = to_sh_qspi(slave);
-
- /* Set master mode only */
- writeb(SPCR_MSTR, &ss->regs->spcr);
-
- /* Set command */
- writew(SPCMD_INIT1, &ss->regs->spcmd0);
-
- /* Reset transfer and receive Buffer */
- setbits_8(&ss->regs->spbfcr, SPBFCR_TXRST|SPBFCR_RXRST);
-
- /* Clear transfer and receive Buffer control bit */
- clrbits_8(&ss->regs->spbfcr, SPBFCR_TXRST|SPBFCR_RXRST);
-
- /* Set equence control method. Use equence0 only */
- writeb(0x00, &ss->regs->spscr);
-
- /* Enable SPI function */
- setbits_8(&ss->regs->spcr, SPCR_SPE);
-}
-
-void spi_cs_deactivate(struct spi_slave *slave)
-{
- struct sh_qspi_slave *ss = to_sh_qspi(slave);
-
- /* Disable SPI Function */
- clrbits_8(&ss->regs->spcr, SPCR_SPE);
-}
-
-void spi_init(void)
-{
- /* nothing to do */
-}
-
-struct spi_slave *spi_setup_slave(unsigned int bus, unsigned int cs,
- unsigned int max_hz, unsigned int mode)
-{
- struct sh_qspi_slave *ss;
-
- if (!spi_cs_is_valid(bus, cs))
- return NULL;
-
- ss = spi_alloc_slave(struct sh_qspi_slave, bus, cs);
- if (!ss) {
- printf("SPI_error: Fail to allocate sh_qspi_slave\n");
- return NULL;
- }
-
- ss->regs = (struct sh_qspi_regs *)SH_QSPI_BASE;
-
- /* Init SH QSPI */
- sh_qspi_init(ss);
-
- return &ss->slave;
-}
-
-void spi_free_slave(struct spi_slave *slave)
-{
- struct sh_qspi_slave *spi = to_sh_qspi(slave);
-
- free(spi);
-}
-
-int spi_claim_bus(struct spi_slave *slave)
-{
- return 0;
-}
-
-void spi_release_bus(struct spi_slave *slave)
-{
-}
-
-int spi_xfer(struct spi_slave *slave, unsigned int bitlen, const void *dout,
- void *din, unsigned long flags)
-{
- struct sh_qspi_slave *ss = to_sh_qspi(slave);
- unsigned long nbyte;
- int ret = 0;
- unsigned char dtdata = 0, drdata;
- unsigned char *tdata = &dtdata, *rdata = &drdata;
- unsigned long *spbmul0 = &ss->regs->spbmul0;
-
- if (dout == NULL && din == NULL) {
- if (flags & SPI_XFER_END)
- spi_cs_deactivate(slave);
- return 0;
- }
-
- if (bitlen % 8) {
- printf("%s: bitlen is not 8bit alined %d", __func__, bitlen);
- return 1;
- }
-
- nbyte = bitlen / 8;
-
- if (flags & SPI_XFER_BEGIN) {
- spi_cs_activate(slave);
-
- /* Set 1048576 byte */
- writel(0x100000, spbmul0);
- }
-
- if (flags & SPI_XFER_END)
- writel(nbyte, spbmul0);
-
- if (dout != NULL)
- tdata = (unsigned char *)dout;
-
- if (din != NULL)
- rdata = din;
-
- while (nbyte > 0) {
- while (!(readb(&ss->regs->spsr) & SPSR_SPTEF)) {
- if (ctrlc()) {
- puts("abort\n");
- return 1;
- }
- udelay(10);
- }
-
- writeb(*tdata, (unsigned char *)(&ss->regs->spdr));
-
- while ((readw(&ss->regs->spbdcr) != SPBDCR_RXBC0)) {
- if (ctrlc()) {
- puts("abort\n");
- return 1;
- }
- udelay(1);
- }
-
- while (!(readb(&ss->regs->spsr) & SPSR_SPRFF)) {
- if (ctrlc()) {
- puts("abort\n");
- return 1;
- }
- udelay(10);
- }
-
- *rdata = readb((unsigned char *)(&ss->regs->spdr));
-
- if (dout != NULL)
- tdata++;
- if (din != NULL)
- rdata++;
-
- nbyte--;
- }
-
- if (flags & SPI_XFER_END)
- spi_cs_deactivate(slave);
-
- return ret;
-}