- * it821x_tune_chipset - set controller timings
- * @drive: Drive to set up
- * @speed: speed we want to achieve
- *
- * Tune the ITE chipset for the desired mode.
- */
-
-static int it821x_tune_chipset(ide_drive_t *drive, const u8 speed)
-{
-
- ide_hwif_t *hwif = drive->hwif;
- struct it821x_dev *itdev = ide_get_hwifdata(hwif);
-
- switch (speed) {
- case XFER_PIO_4:
- case XFER_PIO_3:
- case XFER_PIO_2:
- case XFER_PIO_1:
- case XFER_PIO_0:
- return it821x_tunepio(drive, speed - XFER_PIO_0);
- }
-
- if (itdev->smart == 0) {
- switch (speed) {
- /* MWDMA tuning is really hard because our MWDMA and PIO
- timings are kept in the same place. We can switch in the
- host dma on/off callbacks */
- case XFER_MW_DMA_2:
- case XFER_MW_DMA_1:
- case XFER_MW_DMA_0:
- it821x_tune_mwdma(drive, (speed - XFER_MW_DMA_0));
- break;
- case XFER_UDMA_6:
- case XFER_UDMA_5:
- case XFER_UDMA_4:
- case XFER_UDMA_3:
- case XFER_UDMA_2:
- case XFER_UDMA_1:
- case XFER_UDMA_0:
- it821x_tune_udma(drive, (speed - XFER_UDMA_0));
- break;
- default:
- return 1;
- }
-
- return ide_config_drive_speed(drive, speed);
- }
-
- /* don't touch anything in the smart mode */
- return 0;
-}
-
-/**
- * it821x_configure_drive_for_dma - set up for DMA transfers
- * @drive: drive we are going to set up