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spi: cadence-quadspi: Add flag for direct mode writes

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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 <d-gole@ti.com>
Link: https://lore.kernel.org/r/20230125081023.1573712-3-d-gole@ti.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Dhruva Gole 2023-01-25 13:40:21 +05:30 committed by Mark Brown
parent d4f43a2d05
commit e8c51b1643
No known key found for this signature in database
GPG key ID: 24D68B725D5487D0
1 changed files with 11 additions and 2 deletions
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13
drivers/spi/spi-cadence-quadspi.c
View file

@ -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)