sysadmin/ipxe
1
0
Fork 0
mirror of https://github.com/ipxe/ipxe synced 2025-12-24 15:23:42 +03:00
Code Issues Packages Projects Releases Wiki Activity

Abstracted out part of the concept of an SPI device to a generalised NVS

Browse Source 
device.

Separated the mechanisms of non-volatile storage access and non-volatile
stored options.
This commit is contained in:
Michael Brown
2006-12-04 18:23:06 +00:00
parent dc06c895fc
commit 946967f09c
12 changed files with 275 additions and 240 deletions
Download Patch File Download Diff File Expand all files Collapse all files

9
src/drivers/bitbash/spi_bit.c
View File

@@ -147,22 +147,21 @@ static int spi_bit_rw ( struct spi_bus *bus, struct spi_device *device,
const void *data_out, void *data_in, size_t len ) {
struct spi_bit_basher *spibit
= container_of ( bus, struct spi_bit_basher, bus );
struct spi_device_type *devtype = device->type;
uint32_t tmp;
/* Assert chip select on specified slave */
spi_bit_set_slave_select ( spibit, device->slave, SELECT_SLAVE );
/* Transmit command */
assert ( devtype->command_len <= ( 8 * sizeof ( tmp ) ) );
assert ( device->command_len <= ( 8 * sizeof ( tmp ) ) );
tmp = cpu_to_le32 ( command );
spi_bit_transfer ( spibit, &tmp, NULL, devtype->command_len );
spi_bit_transfer ( spibit, &tmp, NULL, device->command_len );
/* Transmit address, if present */
if ( address >= 0 ) {
assert ( devtype->address_len <= ( 8 * sizeof ( tmp ) ) );
assert ( device->address_len <= ( 8 * sizeof ( tmp ) ) );
tmp = cpu_to_le32 ( address );
spi_bit_transfer ( spibit, &tmp, NULL, devtype->address_len );
spi_bit_transfer ( spibit, &tmp, NULL, device->address_len );
}
/* Transmit/receive data */