spi: intel: Add support for SFDP opcode

The Intel SPI-NOR controller supports SFDP (Serial Flash Discoverable
Parameter) opcode so add it to the list of supported opcodes.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Link: https://lore.kernel.org/r/20221025064623.22808-5-mika.westerberg@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/drivers/spi/spi-intel.c b/drivers/spi/spi-intel.c
index 4d8fda991e7b73fd127961609dfcb61d797405c4..71c36ad778fc8baa02badb36d9ccf176714dbfac 100644 (file)
--- a/drivers/spi/spi-intel.c
+++ b/drivers/spi/spi-intel.c
@@ -33,6 +33,7 @@
 #define HSFSTS_CTL_FCYCLE_WRITE                (0x02 << HSFSTS_CTL_FCYCLE_SHIFT)
 #define HSFSTS_CTL_FCYCLE_ERASE                (0x03 << HSFSTS_CTL_FCYCLE_SHIFT)
 #define HSFSTS_CTL_FCYCLE_ERASE_64K    (0x04 << HSFSTS_CTL_FCYCLE_SHIFT)
+#define HSFSTS_CTL_FCYCLE_RDSFDP       (0x05 << HSFSTS_CTL_FCYCLE_SHIFT)
 #define HSFSTS_CTL_FCYCLE_RDID         (0x06 << HSFSTS_CTL_FCYCLE_SHIFT)
 #define HSFSTS_CTL_FCYCLE_WRSR         (0x07 << HSFSTS_CTL_FCYCLE_SHIFT)
 #define HSFSTS_CTL_FCYCLE_RDSR         (0x08 << HSFSTS_CTL_FCYCLE_SHIFT)
@@ -920,6 +921,11 @@ static const struct spi_controller_mem_ops intel_spi_mem_ops = {
                              INTEL_SPI_OP_DATA_OUT(1),                 \
                              intel_spi_write_reg,                      \
                              HSFSTS_CTL_FCYCLE_WRSR),                  \
+       INTEL_SPI_MEM_OP_REPL(SPI_MEM_OP_CMD(SPINOR_OP_RDSFDP, 1),      \
+                             INTEL_SPI_OP_ADDR(3),                     \
+                             INTEL_SPI_OP_DATA_IN(1),                  \
+                             intel_spi_read_reg,                       \
+                             HSFSTS_CTL_FCYCLE_RDSFDP),                \
        /* Normal read */                                               \
        INTEL_SPI_MEM_OP(SPI_MEM_OP_CMD(SPINOR_OP_READ, 1),             \
                         INTEL_SPI_OP_ADDR(3),                          \