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Diffstat (limited to 'qemu/roms/u-boot/drivers/spi/altera_spi.c')
-rw-r--r--qemu/roms/u-boot/drivers/spi/altera_spi.c168
1 files changed, 0 insertions, 168 deletions
diff --git a/qemu/roms/u-boot/drivers/spi/altera_spi.c b/qemu/roms/u-boot/drivers/spi/altera_spi.c
deleted file mode 100644
index 5accbb5c2..000000000
--- a/qemu/roms/u-boot/drivers/spi/altera_spi.c
+++ /dev/null
@@ -1,168 +0,0 @@
-/*
- * Altera SPI driver
- *
- * based on bfin_spi.c
- * Copyright (c) 2005-2008 Analog Devices Inc.
- * Copyright (C) 2010 Thomas Chou <thomas@wytron.com.tw>
- *
- * SPDX-License-Identifier: GPL-2.0+
- */
-#include <common.h>
-#include <asm/io.h>
-#include <malloc.h>
-#include <spi.h>
-
-#define ALTERA_SPI_RXDATA 0
-#define ALTERA_SPI_TXDATA 4
-#define ALTERA_SPI_STATUS 8
-#define ALTERA_SPI_CONTROL 12
-#define ALTERA_SPI_SLAVE_SEL 20
-
-#define ALTERA_SPI_STATUS_ROE_MSK (0x8)
-#define ALTERA_SPI_STATUS_TOE_MSK (0x10)
-#define ALTERA_SPI_STATUS_TMT_MSK (0x20)
-#define ALTERA_SPI_STATUS_TRDY_MSK (0x40)
-#define ALTERA_SPI_STATUS_RRDY_MSK (0x80)
-#define ALTERA_SPI_STATUS_E_MSK (0x100)
-
-#define ALTERA_SPI_CONTROL_IROE_MSK (0x8)
-#define ALTERA_SPI_CONTROL_ITOE_MSK (0x10)
-#define ALTERA_SPI_CONTROL_ITRDY_MSK (0x40)
-#define ALTERA_SPI_CONTROL_IRRDY_MSK (0x80)
-#define ALTERA_SPI_CONTROL_IE_MSK (0x100)
-#define ALTERA_SPI_CONTROL_SSO_MSK (0x400)
-
-#ifndef CONFIG_SYS_ALTERA_SPI_LIST
-#define CONFIG_SYS_ALTERA_SPI_LIST { CONFIG_SYS_SPI_BASE }
-#endif
-
-static ulong altera_spi_base_list[] = CONFIG_SYS_ALTERA_SPI_LIST;
-
-struct altera_spi_slave {
- struct spi_slave slave;
- ulong base;
-};
-#define to_altera_spi_slave(s) container_of(s, struct altera_spi_slave, slave)
-
-__attribute__((weak))
-int spi_cs_is_valid(unsigned int bus, unsigned int cs)
-{
- return bus < ARRAY_SIZE(altera_spi_base_list) && cs < 32;
-}
-
-__attribute__((weak))
-void spi_cs_activate(struct spi_slave *slave)
-{
- struct altera_spi_slave *altspi = to_altera_spi_slave(slave);
- writel(1 << slave->cs, altspi->base + ALTERA_SPI_SLAVE_SEL);
- writel(ALTERA_SPI_CONTROL_SSO_MSK, altspi->base + ALTERA_SPI_CONTROL);
-}
-
-__attribute__((weak))
-void spi_cs_deactivate(struct spi_slave *slave)
-{
- struct altera_spi_slave *altspi = to_altera_spi_slave(slave);
- writel(0, altspi->base + ALTERA_SPI_CONTROL);
- writel(0, altspi->base + ALTERA_SPI_SLAVE_SEL);
-}
-
-void spi_init(void)
-{
-}
-
-void spi_set_speed(struct spi_slave *slave, uint hz)
-{
- /* altera spi core does not support programmable speed */
-}
-
-struct spi_slave *spi_setup_slave(unsigned int bus, unsigned int cs,
- unsigned int max_hz, unsigned int mode)
-{
- struct altera_spi_slave *altspi;
-
- if (!spi_cs_is_valid(bus, cs))
- return NULL;
-
- altspi = spi_alloc_slave(struct altera_spi_slave, bus, cs);
- if (!altspi)
- return NULL;
-
- altspi->base = altera_spi_base_list[bus];
- debug("%s: bus:%i cs:%i base:%lx\n", __func__,
- bus, cs, altspi->base);
-
- return &altspi->slave;
-}
-
-void spi_free_slave(struct spi_slave *slave)
-{
- struct altera_spi_slave *altspi = to_altera_spi_slave(slave);
- free(altspi);
-}
-
-int spi_claim_bus(struct spi_slave *slave)
-{
- struct altera_spi_slave *altspi = to_altera_spi_slave(slave);
-
- debug("%s: bus:%i cs:%i\n", __func__, slave->bus, slave->cs);
- writel(0, altspi->base + ALTERA_SPI_CONTROL);
- writel(0, altspi->base + ALTERA_SPI_SLAVE_SEL);
- return 0;
-}
-
-void spi_release_bus(struct spi_slave *slave)
-{
- struct altera_spi_slave *altspi = to_altera_spi_slave(slave);
-
- debug("%s: bus:%i cs:%i\n", __func__, slave->bus, slave->cs);
- writel(0, altspi->base + ALTERA_SPI_SLAVE_SEL);
-}
-
-#ifndef CONFIG_ALTERA_SPI_IDLE_VAL
-# define CONFIG_ALTERA_SPI_IDLE_VAL 0xff
-#endif
-
-int spi_xfer(struct spi_slave *slave, unsigned int bitlen, const void *dout,
- void *din, unsigned long flags)
-{
- struct altera_spi_slave *altspi = to_altera_spi_slave(slave);
- /* assume spi core configured to do 8 bit transfers */
- uint bytes = bitlen / 8;
- const uchar *txp = dout;
- uchar *rxp = din;
-
- debug("%s: bus:%i cs:%i bitlen:%i bytes:%i flags:%lx\n", __func__,
- slave->bus, slave->cs, bitlen, bytes, flags);
- if (bitlen == 0)
- goto done;
-
- if (bitlen % 8) {
- flags |= SPI_XFER_END;
- goto done;
- }
-
- /* empty read buffer */
- if (readl(altspi->base + ALTERA_SPI_STATUS) &
- ALTERA_SPI_STATUS_RRDY_MSK)
- readl(altspi->base + ALTERA_SPI_RXDATA);
- if (flags & SPI_XFER_BEGIN)
- spi_cs_activate(slave);
-
- while (bytes--) {
- uchar d = txp ? *txp++ : CONFIG_ALTERA_SPI_IDLE_VAL;
- debug("%s: tx:%x ", __func__, d);
- writel(d, altspi->base + ALTERA_SPI_TXDATA);
- while (!(readl(altspi->base + ALTERA_SPI_STATUS) &
- ALTERA_SPI_STATUS_RRDY_MSK))
- ;
- d = readl(altspi->base + ALTERA_SPI_RXDATA);
- if (rxp)
- *rxp++ = d;
- debug("rx:%x\n", d);
- }
- done:
- if (flags & SPI_XFER_END)
- spi_cs_deactivate(slave);
-
- return 0;
-}