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authorYong Wu <yong.wu@mediatek.com>2019-08-24 11:02:07 +0800
committerJoerg Roedel <jroedel@suse.de>2019-08-30 15:57:27 +0200
commitec2da07ca1202552d87fb01b238d46642817da2b (patch)
tree8da2856e02687fc93c587f25077e811e5eaed32f /drivers/memory
parentb9475b3471f81a60a727886230b0903be72dc96d (diff)
downloadlinux-ec2da07ca1202552d87fb01b238d46642817da2b.tar.gz
memory: mtk-smi: Get rid of need_larbid
The "mediatek,larb-id" has already been parsed in MTK IOMMU driver. It's no need to parse it again in SMI driver. Only clean some codes. This patch is fit for all the current mt2701, mt2712, mt7623, mt8173 and mt8183. After this patch, the "mediatek,larb-id" only be needed for mt2712 which have 2 M4Us. In the other SoCs, we can get the larb-id from M4U in which the larbs in the "mediatek,larbs" always are ordered. Correspondingly, the larb_nr in the "struct mtk_smi_iommu" could also be deleted. CC: Matthias Brugger <matthias.bgg@gmail.com> Signed-off-by: Yong Wu <yong.wu@mediatek.com> Reviewed-by: Evan Green <evgreen@chromium.org> Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/memory')
-rw-r--r--drivers/memory/mtk-smi.c26
1 files changed, 2 insertions, 24 deletions
diff --git a/drivers/memory/mtk-smi.c b/drivers/memory/mtk-smi.c
index 289e59543a04..d6dc62fd89fe 100644
--- a/drivers/memory/mtk-smi.c
+++ b/drivers/memory/mtk-smi.c
@@ -59,7 +59,6 @@ struct mtk_smi_common_plat {
};
struct mtk_smi_larb_gen {
- bool need_larbid;
int port_in_larb[MTK_LARB_NR_MAX + 1];
void (*config_port)(struct device *);
unsigned int larb_direct_to_common_mask;
@@ -147,18 +146,9 @@ mtk_smi_larb_bind(struct device *dev, struct device *master, void *data)
struct mtk_smi_iommu *smi_iommu = data;
unsigned int i;
- if (larb->larb_gen->need_larbid) {
- larb->mmu = &smi_iommu->larb_imu[larb->larbid].mmu;
- return 0;
- }
-
- /*
- * If there is no larbid property, Loop to find the corresponding
- * iommu information.
- */
- for (i = 0; i < smi_iommu->larb_nr; i++) {
+ for (i = 0; i < MTK_LARB_NR_MAX; i++) {
if (dev == smi_iommu->larb_imu[i].dev) {
- /* The 'mmu' may be updated in iommu-attach/detach. */
+ larb->larbid = i;
larb->mmu = &smi_iommu->larb_imu[i].mmu;
return 0;
}
@@ -237,7 +227,6 @@ static const struct mtk_smi_larb_gen mtk_smi_larb_mt8173 = {
};
static const struct mtk_smi_larb_gen mtk_smi_larb_mt2701 = {
- .need_larbid = true,
.port_in_larb = {
LARB0_PORT_OFFSET, LARB1_PORT_OFFSET,
LARB2_PORT_OFFSET, LARB3_PORT_OFFSET
@@ -246,7 +235,6 @@ static const struct mtk_smi_larb_gen mtk_smi_larb_mt2701 = {
};
static const struct mtk_smi_larb_gen mtk_smi_larb_mt2712 = {
- .need_larbid = true,
.config_port = mtk_smi_larb_config_port_gen2_general,
.larb_direct_to_common_mask = BIT(8) | BIT(9), /* bdpsys */
};
@@ -285,7 +273,6 @@ static int mtk_smi_larb_probe(struct platform_device *pdev)
struct device *dev = &pdev->dev;
struct device_node *smi_node;
struct platform_device *smi_pdev;
- int err;
larb = devm_kzalloc(dev, sizeof(*larb), GFP_KERNEL);
if (!larb)
@@ -315,15 +302,6 @@ static int mtk_smi_larb_probe(struct platform_device *pdev)
}
larb->smi.dev = dev;
- if (larb->larb_gen->need_larbid) {
- err = of_property_read_u32(dev->of_node, "mediatek,larb-id",
- &larb->larbid);
- if (err) {
- dev_err(dev, "missing larbid property\n");
- return err;
- }
- }
-
smi_node = of_parse_phandle(dev->of_node, "mediatek,smi", 0);
if (!smi_node)
return -EINVAL;