#include <linux/platform_device.h>
#include <linux/delay.h>
#include <linux/spi/spi.h>
+#include <linux/iopoll.h>
#define AMD_SPI_CTRL0_REG 0x00
#define AMD_SPI_EXEC_CMD BIT(16)
static int amd_spi_busy_wait(struct amd_spi *amd_spi)
{
- int timeout = 100000;
+ u32 val;
- /* poll for SPI bus to become idle */
- while (amd_spi_readreg32(amd_spi, AMD_SPI_CTRL0_REG) & AMD_SPI_BUSY) {
- usleep_range(10, 20);
- if (timeout-- < 0)
- return -ETIMEDOUT;
- }
-
- return 0;
+ return readl_poll_timeout(amd_spi->io_remap_addr + AMD_SPI_CTRL0_REG,
+ val, !(val & AMD_SPI_BUSY), 20, 2000000);
}
static int amd_spi_execute_opcode(struct amd_spi *amd_spi)