gpu: ipu-v3: Add ipu_get_num()

Adds of-alias id to ipu_soc and retrieve with ipu_get_num().

Signed-off-by: Steve Longerbeam <steve_longerbeam@mentor.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>

2 files changed, 9 insertions, 0 deletions

diff --git a/drivers/gpu/ipu-v3/ipu-common.c b/drivers/gpu/ipu-v3/ipu-common.c
index 99dcacf05b99..d697cd505289 100644
--- a/drivers/gpu/ipu-v3/ipu-common.c
+++ b/drivers/gpu/ipu-v3/ipu-common.c
@@ -45,6 +45,12 @@ static inline void ipu_cm_write(struct ipu_soc *ipu, u32 value, unsigned offset)
         writel(value, ipu->cm_reg + offset);
 }
 
+int ipu_get_num(struct ipu_soc *ipu)
+{
+        return ipu->id;
+}
+EXPORT_SYMBOL_GPL(ipu_get_num);
+
 void ipu_srm_dp_sync_update(struct ipu_soc *ipu)
 {
         u32 val;
@@ -1209,6 +1215,7 @@ static int ipu_probe(struct platform_device *pdev)
 {
         const struct of_device_id *of_id =
                         of_match_device(imx_ipu_dt_ids, &pdev->dev);
+        struct device_node *np = pdev->dev.of_node;
         struct ipu_soc *ipu;
         struct resource *res;
         unsigned long ipu_base;
@@ -1237,6 +1244,7 @@ static int ipu_probe(struct platform_device *pdev)
                 ipu->channel[i].ipu = ipu;
         ipu->devtype = devtype;
         ipu->ipu_type = devtype->type;
+        ipu->id = of_alias_get_id(np, "ipu");
 
         spin_lock_init(&ipu->lock);
         mutex_init(&ipu->channel_lock);
diff --git a/drivers/gpu/ipu-v3/ipu-prv.h b/drivers/gpu/ipu-v3/ipu-prv.h
index bfb1e8a4483f..fd47f8f555cd 100644
--- a/drivers/gpu/ipu-v3/ipu-prv.h
+++ b/drivers/gpu/ipu-v3/ipu-prv.h
@@ -152,6 +152,7 @@ struct ipu_soc {
         void __iomem            *cm_reg;
         void __iomem            *idmac_reg;
 
+        int                     id;
         int                     usecount;
 
         struct clk              *clk;