diff options
| author | Alexander Dahl <[email protected]> | 2025-01-23 13:12:10 +0100 |
|---|---|---|
| committer | Eugen Hristev <[email protected]> | 2025-02-12 10:29:33 +0200 |
| commit | 6a9e8d6d21157567702dc3ccec6a7dcda7cb2afe (patch) | |
| tree | 080f92506d27abfccd1420bdc7306a4d44f37eb2 | |
| parent | d3ded566db57ee7a09f354ab10018396725f38c0 (diff) | |
spi: atmel-quadspi: Port collected fixes from Linux v5.10 and v5.15
Port changes from a 4 piece patch series from Linux kernel v5.10, merged
with v5.10-rc1-83-gc732b7567d869 ("Merge series "spi: atmel-quadspi: Fix
AHB memory accesses" from Tudor Ambarus …").
Port the single fix v5.15-rc1-14-g09134c5322df9 ("spi: Fixed division by
zero warning").
Reduces differences between linux and u-boot driver.
Cc: Tudor Ambarus <[email protected]>
Cc: Yoshitaka Ikeda <[email protected]>
Signed-off-by: Alexander Dahl <[email protected]>
| -rw-r--r-- | drivers/spi/atmel-quadspi.c | 27 |
1 files changed, 14 insertions, 13 deletions
diff --git a/drivers/spi/atmel-quadspi.c b/drivers/spi/atmel-quadspi.c index 3efb661803b..ea045acab65 100644 --- a/drivers/spi/atmel-quadspi.c +++ b/drivers/spi/atmel-quadspi.c @@ -474,7 +474,7 @@ static int atmel_qspi_set_cfg(struct atmel_qspi *aq, return mode; ifr |= atmel_qspi_modes[mode].config; - if (op->dummy.buswidth && op->dummy.nbytes) + if (op->dummy.nbytes) dummy_cycles = op->dummy.nbytes * 8 / op->dummy.buswidth; /* @@ -529,10 +529,14 @@ static int atmel_qspi_set_cfg(struct atmel_qspi *aq, if (dummy_cycles) ifr |= QSPI_IFR_NBDUM(dummy_cycles); - /* Set data enable */ - if (op->data.nbytes) + /* Set data enable and data transfer type. */ + if (op->data.nbytes) { ifr |= QSPI_IFR_DATAEN; + if (op->addr.nbytes) + ifr |= QSPI_IFR_TFRTYP_MEM; + } + /* * If the QSPI controller is set in regular SPI mode, set it in * Serial Memory Mode (SMM). @@ -545,27 +549,24 @@ static int atmel_qspi_set_cfg(struct atmel_qspi *aq, /* Clear pending interrupts */ (void)atmel_qspi_read(aq, QSPI_SR); - if (aq->caps->has_ricr) { - if (!op->addr.nbytes && op->data.dir == SPI_MEM_DATA_IN) - ifr |= QSPI_IFR_APBTFRTYP_READ; - - /* Set QSPI Instruction Frame registers */ + /* Set QSPI Instruction Frame registers. */ + if (op->addr.nbytes && !op->data.nbytes) atmel_qspi_write(iar, aq, QSPI_IAR); + + if (aq->caps->has_ricr) { if (op->data.dir == SPI_MEM_DATA_IN) atmel_qspi_write(icr, aq, QSPI_RICR); else atmel_qspi_write(icr, aq, QSPI_WICR); - atmel_qspi_write(ifr, aq, QSPI_IFR); } else { - if (op->data.dir == SPI_MEM_DATA_OUT) + if (op->data.nbytes && op->data.dir == SPI_MEM_DATA_OUT) ifr |= QSPI_IFR_SAMA5D2_WRITE_TRSFR; - /* Set QSPI Instruction Frame registers */ - atmel_qspi_write(iar, aq, QSPI_IAR); atmel_qspi_write(icr, aq, QSPI_ICR); - atmel_qspi_write(ifr, aq, QSPI_IFR); } + atmel_qspi_write(ifr, aq, QSPI_IFR); + return 0; } |