#include <linux/fpga/adi-axi-common.h>
#include <linux/interrupt.h>
#include <linux/io.h>
+#include <linux/iopoll.h>
#include <linux/of.h>
#include <linux/module.h>
#include <linux/overflow.h>
{
struct spi_controller *host = device->controller;
struct spi_engine *spi_engine = spi_controller_get_devdata(host);
+ unsigned int reg;
if (device->mode & SPI_CS_HIGH)
spi_engine->cs_inv |= BIT(spi_get_chipselect(device, 0));
else
spi_engine->cs_inv &= ~BIT(spi_get_chipselect(device, 0));
+ writel_relaxed(SPI_ENGINE_CMD_SYNC(0),
+ spi_engine->base + SPI_ENGINE_REG_CMD_FIFO);
+
writel_relaxed(SPI_ENGINE_CMD_CS_INV(spi_engine->cs_inv),
spi_engine->base + SPI_ENGINE_REG_CMD_FIFO);
writel_relaxed(SPI_ENGINE_CMD_ASSERT(0, 0xff),
spi_engine->base + SPI_ENGINE_REG_CMD_FIFO);
- return 0;
+ writel_relaxed(SPI_ENGINE_CMD_SYNC(1),
+ spi_engine->base + SPI_ENGINE_REG_CMD_FIFO);
+
+ return readl_relaxed_poll_timeout(spi_engine->base + SPI_ENGINE_REG_SYNC_ID,
+ reg, reg == 1, 1, 1000);
}
static int spi_engine_transfer_one_message(struct spi_controller *host,