dtoc: extend dtoc to use struct driver_info when linking nodes

In the current implementation, when dtoc parses a dtb to generate a struct
platdata it converts the information related to linked nodes as pointers
to struct platdata of destination nodes. By doing this, it makes
difficult to get pointer to udevices created based on these
information.

This patch extends dtoc to use struct driver_info when populating
information about linked nodes, which makes it easier to later get
the devices created. In this context, reimplement functions like
clk_get_by_index_platdata() which made use of the previous approach.

Signed-off-by: Walter Lozano <walter.lozano@collabora.com>
Reviewed-by: Simon Glass <sjg@chromium.org>

7 files changed, 14 insertions, 17 deletions

diff --git a/drivers/clk/clk-uclass.c b/drivers/clk/clk-uclass.c
index 70df9d410f..15656f5973 100644
--- a/drivers/clk/clk-uclass.c
+++ b/drivers/clk/clk-uclass.c
@@ -27,17 +27,16 @@ static inline const struct clk_ops *clk_dev_ops(struct udevice *dev)
 
 #if CONFIG_IS_ENABLED(OF_CONTROL)
 # if CONFIG_IS_ENABLED(OF_PLATDATA)
-int clk_get_by_index_platdata(struct udevice *dev, int index,
-			      struct phandle_1_arg *cells, struct clk *clk)
+int clk_get_by_driver_info(struct udevice *dev, struct phandle_1_arg *cells,
+			   struct clk *clk)
 {
 	int ret;
 
-	if (index != 0)
-		return -ENOSYS;
-	ret = uclass_get_device(UCLASS_CLK, 0, &clk->dev);
+	ret = device_get_by_driver_info((struct driver_info *)cells->node,
+					&clk->dev);
 	if (ret)
 		return ret;
-	clk->id = cells[0].arg[0];
+	clk->id = cells->arg[0];
 
 	return 0;
 }
diff --git a/drivers/misc/irq-uclass.c b/drivers/misc/irq-uclass.c
index 16dc0be75c..ec70866cc3 100644
--- a/drivers/misc/irq-uclass.c
+++ b/drivers/misc/irq-uclass.c
@@ -64,17 +64,15 @@ int irq_read_and_clear(struct irq *irq)
 }
 
 #if CONFIG_IS_ENABLED(OF_PLATDATA)
-int irq_get_by_index_platdata(struct udevice *dev, int index,
-			      struct phandle_1_arg *cells, struct irq *irq)
+int irq_get_by_driver_info(struct udevice *dev,
+			   struct phandle_1_arg *cells, struct irq *irq)
 {
 	int ret;
 
-	if (index != 0)
-		return -ENOSYS;
-	ret = uclass_get_device(UCLASS_IRQ, 0, &irq->dev);
+	ret = device_get_by_driver_info(cells->node, &irq->dev);
 	if (ret)
 		return ret;
-	irq->id = cells[0].arg[0];
+	irq->id = cells->arg[0];
 
 	return 0;
 }
diff --git a/drivers/mmc/ftsdc010_mci.c b/drivers/mmc/ftsdc010_mci.c
index b37523e26f..fb28f0166f 100644
--- a/drivers/mmc/ftsdc010_mci.c
+++ b/drivers/mmc/ftsdc010_mci.c
@@ -439,7 +439,7 @@ static int ftsdc010_mmc_probe(struct udevice *dev)
 	chip->priv = dev;
 	chip->dev_index = 1;
 	memcpy(priv->minmax, dtplat->clock_freq_min_max, sizeof(priv->minmax));
-	ret = clk_get_by_index_platdata(dev, 0, dtplat->clocks, &priv->clk);
+	ret = clk_get_by_driver_info(dev, dtplat->clocks, &priv->clk);
 	if (ret < 0)
 		return ret;
 #endif
diff --git a/drivers/mmc/rockchip_dw_mmc.c b/drivers/mmc/rockchip_dw_mmc.c
index e8e4da20f7..f1dafa6ce7 100644
--- a/drivers/mmc/rockchip_dw_mmc.c
+++ b/drivers/mmc/rockchip_dw_mmc.c
@@ -122,7 +122,7 @@ static int rockchip_dwmmc_probe(struct udevice *dev)
 	priv->minmax[0] = 400000;  /*  400 kHz */
 	priv->minmax[1] = dtplat->max_frequency;
 
-	ret = clk_get_by_index_platdata(dev, 0, dtplat->clocks, &priv->clk);
+	ret = clk_get_by_driver_info(dev, dtplat->clocks, &priv->clk);
 	if (ret < 0)
 		return ret;
 #else
diff --git a/drivers/mmc/rockchip_sdhci.c b/drivers/mmc/rockchip_sdhci.c
index b440996b26..b073f1a08d 100644
--- a/drivers/mmc/rockchip_sdhci.c
+++ b/drivers/mmc/rockchip_sdhci.c
@@ -46,7 +46,7 @@ static int arasan_sdhci_probe(struct udevice *dev)
 	host->name = dev->name;
 	host->ioaddr = map_sysmem(dtplat->reg[0], dtplat->reg[1]);
 	max_frequency = dtplat->max_frequency;
-	ret = clk_get_by_index_platdata(dev, 0, dtplat->clocks, &clk);
+	ret = clk_get_by_driver_info(dev, dtplat->clocks, &clk);
 #else
 	max_frequency = dev_read_u32_default(dev, "max-frequency", 0);
 	ret = clk_get_by_index(dev, 0, &clk);
diff --git a/drivers/ram/rockchip/sdram_rk3399.c b/drivers/ram/rockchip/sdram_rk3399.c
index 60a1ab8b51..0fe2cedc52 100644
--- a/drivers/ram/rockchip/sdram_rk3399.c
+++ b/drivers/ram/rockchip/sdram_rk3399.c
@@ -3128,7 +3128,7 @@ static int rk3399_dmc_init(struct udevice *dev)
 	      priv->cic, priv->pmugrf, priv->pmusgrf, priv->pmucru, priv->pmu);
 
 #if CONFIG_IS_ENABLED(OF_PLATDATA)
-	ret = clk_get_by_index_platdata(dev, 0, dtplat->clocks, &priv->ddr_clk);
+	ret = clk_get_by_driver_info(dev, dtplat->clocks, &priv->ddr_clk);
 #else
 	ret = clk_get_by_index(dev, 0, &priv->ddr_clk);
 #endif
diff --git a/drivers/spi/rk_spi.c b/drivers/spi/rk_spi.c
index add3e49c30..b6f95fa9a4 100644
--- a/drivers/spi/rk_spi.c
+++ b/drivers/spi/rk_spi.c
@@ -183,7 +183,7 @@ static int conv_of_platdata(struct udevice *dev)
 
 	plat->base = dtplat->reg[0];
 	plat->frequency = 20000000;
-	ret = clk_get_by_index_platdata(dev, 0, dtplat->clocks, &priv->clk);
+	ret = clk_get_by_driver_info(dev, dtplat->clocks, &priv->clk);
 	if (ret < 0)
 		return ret;
 	dev->req_seq = 0;