[PATCH v2 1/4] designware: Use the remove() method with related drivers

[Simon Glass <sjg@chromium.org>]

Several drivers make use of the designware Ethernet driver but do not
implement the remove() method. Add this to keep things tidy.

Note that the Ethernet uclass calls each driver's stop() method on
removal, so there is no need to do that here.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reported-by: Christian Kohlschütter <christian@kohlschutter.com>
---

Changes in v2:
- Use the designware_eth_remove() method directly
- Add gmac_rockchip too
- Reword the commit message to mention the uclass' actions

 drivers/net/designware.c    |  2 +-
 drivers/net/designware.h    | 12 ++++++++++++
 drivers/net/dwmac_meson8b.c |  1 +
 drivers/net/dwmac_s700.c    |  1 +
 drivers/net/dwmac_socfpga.c |  1 +
 drivers/net/gmac_rockchip.c |  1 +
 6 files changed, 17 insertions(+), 1 deletion(-)

diff --git a/drivers/net/designware.c b/drivers/net/designware.c
index 07b0f49ef58..5385849ea6b 100644
--- a/drivers/net/designware.c
+++ b/drivers/net/designware.c
@@ -805,7 +805,7 @@ clk_err:
 	return err;
 }
 
-static int designware_eth_remove(struct udevice *dev)
+int designware_eth_remove(struct udevice *dev)
 {
 	struct dw_eth_dev *priv = dev_get_priv(dev);
 
diff --git a/drivers/net/designware.h b/drivers/net/designware.h
index e47101ccaf6..8c9d0190e03 100644
--- a/drivers/net/designware.h
+++ b/drivers/net/designware.h
@@ -247,6 +247,18 @@ struct dw_eth_dev {
 
 int designware_eth_of_to_plat(struct udevice *dev);
 int designware_eth_probe(struct udevice *dev);
+
+/**
+ * designware_eth_remove() - Remove the device
+ *
+ * Disables DMA and marks the device as remove. This must be called before
+ * booting an OS, to ensure that DMA is inactive.
+ *
+ * @dev: Device to remove
+ * Return 0 if OK, -ve on error
+ */
+int designware_eth_remove(struct udevice *dev);
+
 extern const struct eth_ops designware_eth_ops;
 
 struct dw_eth_pdata {
diff --git a/drivers/net/dwmac_meson8b.c b/drivers/net/dwmac_meson8b.c
index fde4aabbace..bf94e50842d 100644
--- a/drivers/net/dwmac_meson8b.c
+++ b/drivers/net/dwmac_meson8b.c
@@ -158,6 +158,7 @@ U_BOOT_DRIVER(dwmac_meson8b) = {
 	.of_match	= dwmac_meson8b_ids,
 	.of_to_plat = dwmac_meson8b_of_to_plat,
 	.probe		= dwmac_meson8b_probe,
+	.remove		= designware_eth_remove,
 	.ops		= &designware_eth_ops,
 	.priv_auto	= sizeof(struct dw_eth_dev),
 	.plat_auto	= sizeof(struct dwmac_meson8b_plat),
diff --git a/drivers/net/dwmac_s700.c b/drivers/net/dwmac_s700.c
index 969d247b4f3..e78193f3376 100644
--- a/drivers/net/dwmac_s700.c
+++ b/drivers/net/dwmac_s700.c
@@ -60,6 +60,7 @@ U_BOOT_DRIVER(dwmac_s700) = {
 	.of_match = dwmac_s700_ids,
 	.of_to_plat = dwmac_s700_of_to_plat,
 	.probe  = dwmac_s700_probe,
+	.remove	= designware_eth_remove,
 	.ops    = &designware_eth_ops,
 	.priv_auto	= sizeof(struct dw_eth_dev),
 	.plat_auto	= sizeof(struct eth_pdata),
diff --git a/drivers/net/dwmac_socfpga.c b/drivers/net/dwmac_socfpga.c
index a9e2d8c0972..dda33f90d65 100644
--- a/drivers/net/dwmac_socfpga.c
+++ b/drivers/net/dwmac_socfpga.c
@@ -141,6 +141,7 @@ U_BOOT_DRIVER(dwmac_socfpga) = {
 	.of_match	= dwmac_socfpga_ids,
 	.of_to_plat = dwmac_socfpga_of_to_plat,
 	.probe		= dwmac_socfpga_probe,
+	.remove		= designware_eth_remove,
 	.ops		= &designware_eth_ops,
 	.priv_auto	= sizeof(struct dw_eth_dev),
 	.plat_auto	= sizeof(struct dwmac_socfpga_plat),
diff --git a/drivers/net/gmac_rockchip.c b/drivers/net/gmac_rockchip.c
index 8cfeeffe95b..5c542d62bd8 100644
--- a/drivers/net/gmac_rockchip.c
+++ b/drivers/net/gmac_rockchip.c
@@ -756,6 +756,7 @@ U_BOOT_DRIVER(eth_gmac_rockchip) = {
 	.of_match = rockchip_gmac_ids,
 	.of_to_plat = gmac_rockchip_of_to_plat,
 	.probe	= gmac_rockchip_probe,
+	.remove	= designware_eth_remove,
 	.ops	= &gmac_rockchip_eth_ops,
 	.priv_auto	= sizeof(struct dw_eth_dev),
 	.plat_auto	= sizeof(struct gmac_rockchip_plat),
-- 
2.43.0