[PATCH v3 3/6] net: ti: am65-cpsw-nuss: Rework RX flow ID handling

[Vignesh Raghavendra]

Get flow ID information for RX DMA channel using dma_get_cfg() interface
instead of reading from DT. This is required in order to avoid DT update
whenever there is change in the range of flow ID allocated to the host.

Signed-off-by: Vignesh Raghavendra <vigneshr at ti.com>
Acked-by: Joe Hershberger <joe.hershberger at ni.com>
Reviewed-by: Grygorii Strashko <grygorii.strashko at ti.com>
---
 drivers/net/ti/am65-cpsw-nuss.c | 15 ++++++---------
 1 file changed, 6 insertions(+), 9 deletions(-)

diff --git a/drivers/net/ti/am65-cpsw-nuss.c b/drivers/net/ti/am65-cpsw-nuss.c
index 06b06639506a..db686595b782 100644
--- a/drivers/net/ti/am65-cpsw-nuss.c
+++ b/drivers/net/ti/am65-cpsw-nuss.c
@@ -99,7 +99,6 @@ struct am65_cpsw_common {
 
 	u32			port_num;
 	struct am65_cpsw_port	ports[AM65_CPSW_CPSWNU_MAX_PORTS];
-	u32			rflow_id_base;
 
 	struct mii_dev		*bus;
 	u32			bus_freq;
@@ -276,6 +275,7 @@ static int am65_cpsw_start(struct udevice *dev)
 	struct am65_cpsw_common	*common = priv->cpsw_common;
 	struct am65_cpsw_port *port = &common->ports[priv->port_id];
 	struct am65_cpsw_port *port0 = &common->ports[0];
+	struct ti_udma_drv_chan_cfg_data *dma_rx_cfg_data;
 	int ret, i;
 
 	ret = power_domain_on(&common->pwrdmn);
@@ -341,8 +341,11 @@ static int am65_cpsw_start(struct udevice *dev)
 	writel(PKTSIZE_ALIGN, port0->port_base + AM65_CPSW_PN_RX_MAXLEN_REG);
 
 	/* set base flow_id */
-	writel(common->rflow_id_base,
+	dma_get_cfg(&common->dma_rx, 0, (void **)&dma_rx_cfg_data);
+	writel(dma_rx_cfg_data->flow_id_base,
 	       port0->port_base + AM65_CPSW_P0_FLOW_ID_REG);
+	dev_info(dev, "K3 CPSW: rflow_id_base: %u\n",
+		 dma_rx_cfg_data->flow_id_base);
 
 	/* Reset and enable the ALE */
 	writel(AM65_CPSW_ALE_CTL_REG_ENABLE | AM65_CPSW_ALE_CTL_REG_RESET_TBL |
@@ -669,11 +672,6 @@ static int am65_cpsw_probe_cpsw(struct udevice *dev)
 				AM65_CPSW_CPSW_NU_ALE_BASE;
 	cpsw_common->mdio_base = cpsw_common->ss_base + AM65_CPSW_MDIO_BASE;
 
-	cpsw_common->rflow_id_base = 0;
-	cpsw_common->rflow_id_base =
-			dev_read_u32_default(dev, "ti,rx-flow-id-base",
-					     cpsw_common->rflow_id_base);
-
 	ports_np = dev_read_subnode(dev, "ports");
 	if (!ofnode_valid(ports_np)) {
 		ret = -ENOENT;
@@ -761,12 +759,11 @@ static int am65_cpsw_probe_cpsw(struct udevice *dev)
 	if (ret)
 		goto out;
 
-	dev_info(dev, "K3 CPSW: nuss_ver: 0x%08X cpsw_ver: 0x%08X ale_ver: 0x%08X Ports:%u rflow_id_base:%u mdio_freq:%u\n",
+	dev_info(dev, "K3 CPSW: nuss_ver: 0x%08X cpsw_ver: 0x%08X ale_ver: 0x%08X Ports:%u mdio_freq:%u\n",
 		 readl(cpsw_common->ss_base),
 		 readl(cpsw_common->cpsw_base),
 		 readl(cpsw_common->ale_base),
 		 cpsw_common->port_num,
-		 cpsw_common->rflow_id_base,
 		 cpsw_common->bus_freq);
 
 out:
-- 
2.24.0