[libata] ahci_platform: Add the board_ids and pi refer to different features

On imx53 AHCI, soft reset fails with IPMS set when PMP
is enabled but SATA HDD/ODD is connected to SATA port,
do soft reset again to port 0.
So the 'ahci_pmp_retry_srst_ops' is required when imx53
ahci is present.

Signed-off-by: Richard Zhu <richard.zhu@linaro.org>
Acked-by: Eric Miao <eric.miao@linaro.org>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

1 files changed, 38 insertions, 6 deletions

diff --git a/drivers/ata/ahci_platform.c b/drivers/ata/ahci_platform.c
index 6fef1fa75c54..c03277d37748 100644
--- a/drivers/ata/ahci_platform.c
+++ b/drivers/ata/ahci_platform.c
@@ -23,6 +23,41 @@
 #include <linux/ahci_platform.h>
 #include "ahci.h"
 
+enum ahci_type {
+        AHCI,           /* standard platform ahci */
+        IMX53_AHCI,     /* ahci on i.mx53 */
+};
+
+static struct platform_device_id ahci_devtype[] = {
+        {
+                .name = "ahci",
+                .driver_data = AHCI,
+        }, {
+                .name = "imx53-ahci",
+                .driver_data = IMX53_AHCI,
+        }, {
+                /* sentinel */
+        }
+};
+MODULE_DEVICE_TABLE(platform, ahci_devtype);
+
+
+static const struct ata_port_info ahci_port_info[] = {
+        /* by features */
+        [AHCI] = {
+                .flags          = AHCI_FLAG_COMMON,
+                .pio_mask       = ATA_PIO4,
+                .udma_mask      = ATA_UDMA6,
+                .port_ops       = &ahci_ops,
+        },
+        [IMX53_AHCI] = {
+                .flags          = AHCI_FLAG_COMMON,
+                .pio_mask       = ATA_PIO4,
+                .udma_mask      = ATA_UDMA6,
+                .port_ops       = &ahci_pmp_retry_srst_ops,
+        },
+};
+
 static struct scsi_host_template ahci_platform_sht = {
         AHCI_SHT("ahci_platform"),
 };
@@ -31,12 +66,8 @@ static int __init ahci_probe(struct platform_device *pdev)
 {
         struct device *dev = &pdev->dev;
         struct ahci_platform_data *pdata = dev->platform_data;
-        struct ata_port_info pi = {
-                .flags          = AHCI_FLAG_COMMON,
-                .pio_mask       = ATA_PIO4,
-                .udma_mask      = ATA_UDMA6,
-                .port_ops       = &ahci_ops,
-        };
+        const struct platform_device_id *id = platform_get_device_id(pdev);
+        struct ata_port_info pi = ahci_port_info[id->driver_data];
         const struct ata_port_info *ppi[] = { &pi, NULL };
         struct ahci_host_priv *hpriv;
         struct ata_host *host;
@@ -177,6 +208,7 @@ static struct platform_driver ahci_driver = {
                 .name = "ahci",
                 .owner = THIS_MODULE,
         },
+        .id_table       = ahci_devtype,
 };
 
 static int __init ahci_init(void)