diff options
Diffstat (limited to 'drivers/spi')
| -rw-r--r-- | drivers/spi/ich.c | 29 |
1 files changed, 13 insertions, 16 deletions
diff --git a/drivers/spi/ich.c b/drivers/spi/ich.c index f5c6f3e7d2..0379444872 100644 --- a/drivers/spi/ich.c +++ b/drivers/spi/ich.c @@ -141,6 +141,15 @@ struct spi_slave *spi_setup_slave(unsigned int bus, unsigned int cs, ich->slave.max_write_size = ctlr.databytes; ich->speed = max_hz; + /* + * ICH 7 SPI controller only supports array read command + * and byte program command for SST flash + */ + if (ctlr.ich_version == 7) { + ich->slave.op_mode_rx = SPI_OPM_RX_AS; + ich->slave.op_mode_tx = SPI_OPM_TX_BP; + } + return &ich->slave; } @@ -158,7 +167,8 @@ void spi_free_slave(struct spi_slave *slave) */ static int get_ich_version(uint16_t device_id) { - if (device_id == PCI_DEVICE_ID_INTEL_TGP_LPC) + if (device_id == PCI_DEVICE_ID_INTEL_TGP_LPC || + device_id == PCI_DEVICE_ID_INTEL_ITC_LPC) return 7; if ((device_id >= PCI_DEVICE_ID_INTEL_COUGARPOINT_LPC_MIN && @@ -483,8 +493,6 @@ int spi_xfer(struct spi_slave *slave, unsigned int bitlen, const void *dout, struct spi_trans *trans = &ich->trans; unsigned type = flags & (SPI_XFER_BEGIN | SPI_XFER_END); int using_cmd = 0; - /* Align read transactions to 64-byte boundaries */ - char buff[ctlr.databytes]; /* Ee don't support writing partial bytes. */ if (bitlen % 8) { @@ -632,14 +640,9 @@ int spi_xfer(struct spi_slave *slave, unsigned int bitlen, const void *dout, */ while (trans->bytesout || trans->bytesin) { uint32_t data_length; - uint32_t aligned_offset; - uint32_t diff; - - aligned_offset = trans->offset & ~(ctlr.databytes - 1); - diff = trans->offset - aligned_offset; /* SPI addresses are 24 bit only */ - ich_writel(aligned_offset & 0x00FFFFFF, ctlr.addr); + ich_writel(trans->offset & 0x00FFFFFF, ctlr.addr); if (trans->bytesout) data_length = min(trans->bytesout, ctlr.databytes); @@ -673,13 +676,7 @@ int spi_xfer(struct spi_slave *slave, unsigned int bitlen, const void *dout, } if (trans->bytesin) { - if (diff) { - data_length -= diff; - read_reg(ctlr.data, buff, ctlr.databytes); - memcpy(trans->in, buff + diff, data_length); - } else { - read_reg(ctlr.data, trans->in, data_length); - } + read_reg(ctlr.data, trans->in, data_length); spi_use_in(trans, data_length); if (with_address) trans->offset += data_length; |