To allow for IPU clients containing multiple ports, they are no longer
a single port node name, but have a name of the format
"ipu<id>_<unit>". So we can no longer use of_graph_get_port_by_id()
to lookup the client node.
Create the function of_get_ipu_client_node() that looks up the client
node by node name and unit id. The ipu_unit_type enumeration is added
to the client_reg[] entries to compose the node names.
Signed-off-by: Steve Longerbeam <steve_longerbeam at mentor.com>
---
drivers/gpu/ipu-v3/ipu-common.c | 55 +++++++++++++++++++++++++++++++++++------
1 file changed, 47 insertions(+), 8 deletions(-)
diff --git a/drivers/gpu/ipu-v3/ipu-common.c b/drivers/gpu/ipu-v3/ipu-common.c
index 97218af..b6ca36b 100644
--- a/drivers/gpu/ipu-v3/ipu-common.c
+++ b/drivers/gpu/ipu-v3/ipu-common.c
@@ -1159,6 +1159,7 @@ struct ipu_platform_reg {
static struct ipu_platform_reg client_reg[] = {
{
.pdata = {
+ .type = IPU_CSI,
.csi = 0,
.dma[0] = IPUV3_CHANNEL_CSI0,
.dma[1] = -EINVAL,
@@ -1166,6 +1167,7 @@ static struct ipu_platform_reg client_reg[] = {
.name = "imx-ipuv3-csi",
}, {
.pdata = {
+ .type = IPU_CSI,
.csi = 1,
.dma[0] = IPUV3_CHANNEL_CSI1,
.dma[1] = -EINVAL,
@@ -1173,6 +1175,7 @@ static struct ipu_platform_reg client_reg[] = {
.name = "imx-ipuv3-csi",
}, {
.pdata = {
+ .type = IPU_DI,
.di = 0,
.dc = 5,
.dp = IPU_DP_FLOW_SYNC_BG,
@@ -1182,6 +1185,7 @@ static struct ipu_platform_reg client_reg[] = {
.name = "imx-ipuv3-crtc",
}, {
.pdata = {
+ .type = IPU_DI,
.di = 1,
.dc = 1,
.dp = -EINVAL,
@@ -1195,6 +1199,46 @@ static struct ipu_platform_reg client_reg[] = {
static DEFINE_MUTEX(ipu_client_id_mutex);
static int ipu_client_id;
+static struct device_node *
+of_get_ipu_client_node(struct ipu_soc *ipu, struct ipu_platform_reg *reg)
+{
+ struct device *dev = ipu->dev;
+ struct device_node *client;
+ char node_name[32];
+ u32 id, client_id = 0;
+
+ switch (reg->pdata.type) {
+ case IPU_CSI:
+ snprintf(node_name, sizeof(node_name),
+ "ipu%d_csi", ipu->id + 1);
+ client_id = reg->pdata.csi;
+ break;
+ case IPU_DI:
+ snprintf(node_name, sizeof(node_name),
+ "ipu%d_di", ipu->id + 1);
+ client_id = reg->pdata.di;
+ break;
+ default:
+ client = NULL;
+ goto out;
+ }
+
+ for_each_child_of_node(dev->of_node, client) {
+ if (client->name &&
+ (of_node_cmp(client->name, node_name) == 0)) {
+ of_property_read_u32(client, "reg", &id);
+ if (id == client_id)
+ break;
+ }
+ }
+out:
+ if (!client)
+ dev_info(dev, "no %s%d node in %s, not using %s%d\n",
+ node_name, client_id, dev->of_node->full_name,
+ node_name, client_id);
+ return client;
+}
+
static int ipu_add_client_devices(struct ipu_soc *ipu, unsigned long ipu_base)
{
struct device *dev = ipu->dev;
@@ -1211,15 +1255,10 @@ static int ipu_add_client_devices(struct ipu_soc *ipu,
unsigned long ipu_base)
struct platform_device *pdev;
struct device_node *of_node;
- /* Associate subdevice with the corresponding port node */
- of_node = of_graph_get_port_by_id(dev->of_node, i);
- if (!of_node) {
- dev_info(dev,
- "no port@%d node in %s, not using %s%d\n",
- i, dev->of_node->full_name,
- (i / 2) ? "DI" : "CSI", i % 2);
+ /* Associate subdevice with the corresponding client node */
+ of_node = of_get_ipu_client_node(ipu, reg);
+ if (!of_node)
continue;
- }
pdev = platform_device_alloc(reg->name, id++);
if (!pdev) {
--
2.7.4
