diff options
Diffstat (limited to 'drivers/spi/spi-intel.c')
| -rw-r--r-- | drivers/spi/spi-intel.c | 51 |
1 files changed, 50 insertions, 1 deletions
diff --git a/drivers/spi/spi-intel.c b/drivers/spi/spi-intel.c index e937cfe85559..50f42983b950 100644 --- a/drivers/spi/spi-intel.c +++ b/drivers/spi/spi-intel.c @@ -779,10 +779,59 @@ static const char *intel_spi_get_name(struct spi_mem *mem) return dev_name(ispi->dev); } +static int intel_spi_dirmap_create(struct spi_mem_dirmap_desc *desc) +{ + struct intel_spi *ispi = spi_master_get_devdata(desc->mem->spi->master); + const struct intel_spi_mem_op *iop; + + iop = intel_spi_match_mem_op(ispi, &desc->info.op_tmpl); + if (!iop) + return -EOPNOTSUPP; + + desc->priv = (void *)iop; + return 0; +} + +static ssize_t intel_spi_dirmap_read(struct spi_mem_dirmap_desc *desc, u64 offs, + size_t len, void *buf) +{ + struct intel_spi *ispi = spi_master_get_devdata(desc->mem->spi->master); + const struct intel_spi_mem_op *iop = desc->priv; + struct spi_mem_op op = desc->info.op_tmpl; + int ret; + + /* Fill in the gaps */ + op.addr.val = offs; + op.data.nbytes = len; + op.data.buf.in = buf; + + ret = iop->exec_op(ispi, iop, &op); + return ret ? ret : len; +} + +static ssize_t intel_spi_dirmap_write(struct spi_mem_dirmap_desc *desc, u64 offs, + size_t len, const void *buf) +{ + struct intel_spi *ispi = spi_master_get_devdata(desc->mem->spi->master); + const struct intel_spi_mem_op *iop = desc->priv; + struct spi_mem_op op = desc->info.op_tmpl; + int ret; + + op.addr.val = offs; + op.data.nbytes = len; + op.data.buf.out = buf; + + ret = iop->exec_op(ispi, iop, &op); + return ret ? ret : len; +} + static const struct spi_controller_mem_ops intel_spi_mem_ops = { .supports_op = intel_spi_supports_mem_op, .exec_op = intel_spi_exec_mem_op, .get_name = intel_spi_get_name, + .dirmap_create = intel_spi_dirmap_create, + .dirmap_read = intel_spi_dirmap_read, + .dirmap_write = intel_spi_dirmap_write, }; #define INTEL_SPI_OP_ADDR(__nbytes) \ @@ -1205,7 +1254,7 @@ static int intel_spi_populate_chip(struct intel_spi *ispi) * intel_spi_probe() - Probe the Intel SPI flash controller * @dev: Pointer to the parent device * @mem: MMIO resource - * @info: Platform spefific information + * @info: Platform specific information * * Probes Intel SPI flash controller and creates the flash chip device. * Returns %0 on success and negative errno in case of failure. |