summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorBrian Norris <computersforpeace@gmail.com>2012-02-21 10:38:44 -0800
committerJeff Garzik <jgarzik@redhat.com>2012-03-13 16:36:18 -0400
commitd408e2b14fba4fa214fa5bc24b7baae8a55e563c (patch)
tree25074c867acc318ef5312012f75ca42cb0397fc0
parent55d5ec316627b64c3764e4c1b4b8e1988e272c1f (diff)
ahci_platform: add STRICT_AHCI platform type
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> Cc: stable@kernel.org
-rw-r--r--drivers/ata/ahci_platform.c11
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 = {