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| author | Brian Norris <computersforpeace@gmail.com> | 2012-02-21 10:38:44 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-04-02 10:32:06 -0700 |
| commit | a9758dd522160885657ea98137b6e8a3205597e6 (patch) | |
| tree | 630d2e3ee39fa2b98a88f5272a00a0b19551ac70 /drivers | |
| parent | 690ea068bfa1b5c208153334a81a0f2afe18fded (diff) | |
| download | lwn-a9758dd522160885657ea98137b6e8a3205597e6.tar.gz lwn-a9758dd522160885657ea98137b6e8a3205597e6.zip | |
ahci_platform: add STRICT_AHCI platform type
commit d408e2b14fba4fa214fa5bc24b7baae8a55e563c upstream.
Some platforms need to make use of the AHCI_HFLAG_DELAY_ENGINE flag.
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/ata/ahci_platform.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/ata/ahci_platform.c b/drivers/ata/ahci_platform.c index 48be4e189163..0c86c77764bc 100644 --- a/drivers/ata/ahci_platform.c +++ b/drivers/ata/ahci_platform.c @@ -26,6 +26,7 @@ enum ahci_type { AHCI, /* standard platform ahci */ IMX53_AHCI, /* ahci on i.mx53 */ + STRICT_AHCI, /* delayed DMA engine start */ }; static struct platform_device_id ahci_devtype[] = { @@ -36,6 +37,9 @@ static struct platform_device_id ahci_devtype[] = { .name = "imx53-ahci", .driver_data = IMX53_AHCI, }, { + .name = "strict-ahci", + .driver_data = STRICT_AHCI, + }, { /* sentinel */ } }; @@ -56,6 +60,13 @@ static const struct ata_port_info ahci_port_info[] = { .udma_mask = ATA_UDMA6, .port_ops = &ahci_pmp_retry_srst_ops, }, + [STRICT_AHCI] = { + AHCI_HFLAGS (AHCI_HFLAG_DELAY_ENGINE), + .flags = AHCI_FLAG_COMMON, + .pio_mask = ATA_PIO4, + .udma_mask = ATA_UDMA6, + .port_ops = &ahci_ops, + }, }; static struct scsi_host_template ahci_platform_sht = { |