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hisi_sas: use Unified Device Properties API 

The hisi_sas driver is required to support both device tree and
ACPI. The scanning of the device properties now uses the Unified Device
Properties API, which serves both OF and ACPI.

Since syscon is not supported by ACPI, syscon is only used in the driver
when device tree is used.

Signed-off-by: John Garry <john.garry@huawei.com>
Signed-off-by: Zhangfei Gao <zhangfei.gao@linaro.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
John Garry 2016-02-04 02:26:08 +08:00 committed by Martin K. Petersen
parent f64d92e665
commit 4d558c7774
2 changed files with 26 additions and 23 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/scsi/hisi_sas/hisi_sas.h
View File

@ -12,11 +12,13 @@
#ifndef _HISI_SAS_H_
#define _HISI_SAS_H_
#include <linux/acpi.h>
#include <linux/dmapool.h>
#include <linux/mfd/syscon.h>
#include <linux/module.h>
#include <linux/of_address.h>
#include <linux/platform_device.h>
#include <linux/property.h>
#include <linux/regmap.h>
#include <scsi/sas_ata.h>
#include <scsi/libsas.h>

47
drivers/scsi/hisi_sas/hisi_sas_main.c
View File

@ -1167,7 +1167,6 @@ static struct Scsi_Host *hisi_sas_shost_alloc(struct platform_device *pdev,
struct hisi_hba *hisi_hba;
struct device *dev = &pdev->dev;
struct device_node *np = pdev->dev.of_node;
struct property *sas_addr_prop;
shost = scsi_host_alloc(&hisi_sas_sht, sizeof(*hisi_hba));
if (!shost)
@ -1181,27 +1180,34 @@ static struct Scsi_Host *hisi_sas_shost_alloc(struct platform_device *pdev,
init_timer(&hisi_hba->timer);
sas_addr_prop = of_find_property(np, "sas-addr", NULL);
if (!sas_addr_prop || (sas_addr_prop->length != SAS_ADDR_SIZE))
goto err_out;
memcpy(hisi_hba->sas_addr, sas_addr_prop->value, SAS_ADDR_SIZE);
if (of_property_read_u32(np, "ctrl-reset-reg",
&hisi_hba->ctrl_reset_reg))
if (device_property_read_u8_array(dev, "sas-addr", hisi_hba->sas_addr,
SAS_ADDR_SIZE))
goto err_out;
if (of_property_read_u32(np, "ctrl-reset-sts-reg",
&hisi_hba->ctrl_reset_sts_reg))
if (np) {
hisi_hba->ctrl = syscon_regmap_lookup_by_phandle(np,
"hisilicon,sas-syscon");
if (IS_ERR(hisi_hba->ctrl))
goto err_out;
if (device_property_read_u32(dev, "ctrl-reset-reg",
&hisi_hba->ctrl_reset_reg))
goto err_out;
if (device_property_read_u32(dev, "ctrl-reset-sts-reg",
&hisi_hba->ctrl_reset_sts_reg))
goto err_out;
if (device_property_read_u32(dev, "ctrl-clock-ena-reg",
&hisi_hba->ctrl_clock_ena_reg))
goto err_out;
}
if (device_property_read_u32(dev, "phy-count", &hisi_hba->n_phy))
goto err_out;
if (of_property_read_u32(np, "ctrl-clock-ena-reg",
&hisi_hba->ctrl_clock_ena_reg))
goto err_out;
if (of_property_read_u32(np, "phy-count", &hisi_hba->n_phy))
goto err_out;
if (of_property_read_u32(np, "queue-count", &hisi_hba->queue_count))
if (device_property_read_u32(dev, "queue-count",
&hisi_hba->queue_count))
goto err_out;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
@ -1209,11 +1215,6 @@ static struct Scsi_Host *hisi_sas_shost_alloc(struct platform_device *pdev,
if (IS_ERR(hisi_hba->regs))
goto err_out;
hisi_hba->ctrl = syscon_regmap_lookup_by_phandle(
np, "hisilicon,sas-syscon");
if (IS_ERR(hisi_hba->ctrl))
goto err_out;
if (hisi_sas_alloc(hisi_hba, shost)) {
hisi_sas_free(hisi_hba);
goto err_out;