Create new flag inorder to avoid playing with use_direct_mode
flag currently being used throughout the driver.
Disable DAC write if auto polling is disabled or CQSPI_DISABLE_DAC_MODE
is set.
Signed-off-by: Dhruva Gole <[email protected]>
---
drivers/spi/spi-cadence-quadspi.c | 13 +++++++++++--
1 file changed, 11 insertions(+), 2 deletions(-)
diff --git a/drivers/spi/spi-cadence-quadspi.c b/drivers/spi/spi-cadence-quadspi.c
index 6030da942c6e..4bbf6e3ad34a 100644
--- a/drivers/spi/spi-cadence-quadspi.c
+++ b/drivers/spi/spi-cadence-quadspi.c
@@ -84,6 +84,7 @@ struct cqspi_st {
u32 trigger_address;
u32 wr_delay;
bool use_direct_mode;
+ bool use_direct_mode_wr;
struct cqspi_flash_pdata f_pdata[CQSPI_MAX_CHIPSELECT];
bool use_dma_read;
u32 pd_dev_id;
@@ -945,6 +946,12 @@ static int cqspi_write_setup(struct cqspi_flash_pdata *f_pdata,
reg = readl(reg_base + CQSPI_REG_WR_COMPLETION_CTRL);
reg |= CQSPI_REG_WR_DISABLE_AUTO_POLL;
writel(reg, reg_base + CQSPI_REG_WR_COMPLETION_CTRL);
+ /*
+ * DAC mode require auto polling as flash needs to be polled
+ * for write completion in case of bubble in SPI transaction
+ * due to slow CPU/DMA master.
+ */
+ cqspi->use_direct_mode_wr = false;
}
reg = readl(reg_base + CQSPI_REG_SIZE);
@@ -1230,7 +1237,7 @@ static ssize_t cqspi_write(struct cqspi_flash_pdata *f_pdata,
* data.
*/
if (!op->cmd.dtr && cqspi->use_direct_mode &&
- ((to + len) <= cqspi->ahb_size)) {
+ cqspi->use_direct_mode_wr && ((to + len) <= cqspi->ahb_size)) {
memcpy_toio(cqspi->ahb_base + to, buf, len);
return cqspi_wait_idle(cqspi);
}
@@ -1700,8 +1707,10 @@ static int cqspi_probe(struct platform_device *pdev)
cqspi->master_ref_clk_hz);
if (ddata->hwcaps_mask & CQSPI_SUPPORTS_OCTAL)
master->mode_bits |= SPI_RX_OCTAL | SPI_TX_OCTAL;
- if (!(ddata->quirks & CQSPI_DISABLE_DAC_MODE))
+ if (!(ddata->quirks & CQSPI_DISABLE_DAC_MODE)) {
cqspi->use_direct_mode = true;
+ cqspi->use_direct_mode_wr = true;
+ }
if (ddata->quirks & CQSPI_SUPPORT_EXTERNAL_DMA)
cqspi->use_dma_read = true;
if (ddata->quirks & CQSPI_NO_SUPPORT_WR_COMPLETION)
--
2.25.1