[PATCH 04/38] gpu: ipu-v3: Add ipu_get_num()

[Steve Longerbeam]

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

Signed-off-by: Steve Longerbeam <steve_longerb...@mentor.com>
---
 drivers/gpu/ipu-v3/ipu-common.c | 8 ++++++++
 drivers/gpu/ipu-v3/ipu-prv.h    | 1 +
 include/video/imx-ipu-v3.h      | 1 +
 3 files changed, 10 insertions(+)

diff --git a/drivers/gpu/ipu-v3/ipu-common.c b/drivers/gpu/ipu-v3/ipu-common.c
index 30dc115..49af121 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;
@@ -1220,6 +1226,7 @@ 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;
@@ -1248,6 +1255,7 @@ 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 845f64c..02057d8 100644
--- a/drivers/gpu/ipu-v3/ipu-prv.h
+++ b/drivers/gpu/ipu-v3/ipu-prv.h
@@ -153,6 +153,7 @@ struct ipu_soc {
        void __iomem            *cm_reg;
        void __iomem            *idmac_reg;
 
+       int                     id;
        int                     usecount;
 
        struct clk              *clk;
diff --git a/include/video/imx-ipu-v3.h b/include/video/imx-ipu-v3.h
index 60540ead..b174f8a 100644
--- a/include/video/imx-ipu-v3.h
+++ b/include/video/imx-ipu-v3.h
@@ -148,6 +148,7 @@ int ipu_idmac_channel_irq(struct ipu_soc *ipu, struct 
ipuv3_channel *channel,
 /*
  * IPU Common functions
  */
+int ipu_get_num(struct ipu_soc *ipu);
 void ipu_set_csi_src_mux(struct ipu_soc *ipu, int csi_id, bool mipi_csi2);
 void ipu_set_ic_src_mux(struct ipu_soc *ipu, int csi_id, bool vdi);
 void ipu_dump(struct ipu_soc *ipu);
-- 
1.9.1

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