nor->bouncebuf[0] |= SR_QUAD_EN_MX;
- ret = spi_nor_write_sr(nor, nor->bouncebuf, 1);
- if (ret)
- return ret;
-
- ret = spi_nor_read_sr(nor, nor->bouncebuf);
- if (ret)
- return ret;
-
- if (!(nor->bouncebuf[0] & SR_QUAD_EN_MX)) {
- dev_dbg(nor->dev, "Macronix Quad bit not set\n");
- return -EIO;
- }
-
- return 0;
+ return spi_nor_write_sr1_and_check(nor, nor->bouncebuf[0]);
}
/**
{
u8 *sr_cr = nor->bouncebuf;
int ret;
+ u8 sr_written;
/* Keep the current value of the Status Register. */
ret = spi_nor_read_sr(nor, sr_cr);
sr_cr[1] = CR_QUAD_EN_SPAN;
- return spi_nor_write_sr(nor, sr_cr, 2);
+ ret = spi_nor_write_sr(nor, sr_cr, 2);
+ if (ret)
+ return ret;
+
+ sr_written = sr_cr[0];
+
+ ret = spi_nor_read_sr(nor, sr_cr);
+ if (ret)
+ return ret;
+
+ if (sr_cr[0] != sr_written) {
+ dev_err(nor->dev, "SR: Read back test failed\n");
+ return -EIO;
+ }
+
+ return 0;
}
/**
{
u8 *sr_cr = nor->bouncebuf;
int ret;
+ u8 sr_written;
/* Check current Quad Enable bit value. */
ret = spi_nor_read_cr(nor, &sr_cr[1]);
if (ret)
return ret;
+ sr_written = sr_cr[0];
+
+ ret = spi_nor_read_sr(nor, sr_cr);
+ if (ret)
+ return ret;
+
+ if (sr_written != sr_cr[0]) {
+ dev_err(nor->dev, "SR: Read back test failed\n");
+ return -EIO;
+ }
+
+ sr_written = sr_cr[1];
+
/* Read back and check it. */
ret = spi_nor_read_cr(nor, &sr_cr[1]);
if (ret)
return ret;
- if (!(sr_cr[1] & CR_QUAD_EN_SPAN)) {
- dev_dbg(nor->dev, "Spansion Quad bit not set\n");
+ if (sr_cr[1] != sr_written) {
+ dev_dbg(nor->dev, "CR: Read back test failed\n");
return -EIO;
}
{
u8 *sr2 = nor->bouncebuf;
int ret;
+ u8 sr2_written;
/* Check current Quad Enable bit value. */
ret = spi_nor_read_sr2(nor, sr2);
if (ret)
return ret;
+ sr2_written = *sr2;
+
/* Read back and check it. */
ret = spi_nor_read_sr2(nor, sr2);
if (ret)
return ret;
- if (!(*sr2 & SR2_QUAD_EN_BIT7)) {
- dev_dbg(nor->dev, "SR2 Quad bit not set\n");
+ if (*sr2 != sr2_written) {
+ dev_dbg(nor->dev, "SR2: Read back test failed\n");
return -EIO;
}