Update Linux to v5.10.109
Sourced from [1]
[1] https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.10.109.tar.xz
Change-Id: I19bca9fc6762d4e63bcf3e4cba88bbe560d9c76c
Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
diff --git a/drivers/net/mdio/mdio-mux-gpio.c b/drivers/net/mdio/mdio-mux-gpio.c
new file mode 100644
index 0000000..10a758f
--- /dev/null
+++ b/drivers/net/mdio/mdio-mux-gpio.c
@@ -0,0 +1,98 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2011, 2012 Cavium, Inc.
+ */
+
+#include <linux/platform_device.h>
+#include <linux/device.h>
+#include <linux/of_mdio.h>
+#include <linux/module.h>
+#include <linux/phy.h>
+#include <linux/mdio-mux.h>
+#include <linux/gpio/consumer.h>
+
+#define DRV_VERSION "1.1"
+#define DRV_DESCRIPTION "GPIO controlled MDIO bus multiplexer driver"
+
+struct mdio_mux_gpio_state {
+ struct gpio_descs *gpios;
+ void *mux_handle;
+};
+
+static int mdio_mux_gpio_switch_fn(int current_child, int desired_child,
+ void *data)
+{
+ struct mdio_mux_gpio_state *s = data;
+ DECLARE_BITMAP(values, BITS_PER_TYPE(desired_child));
+
+ if (current_child == desired_child)
+ return 0;
+
+ values[0] = desired_child;
+
+ gpiod_set_array_value_cansleep(s->gpios->ndescs, s->gpios->desc,
+ s->gpios->info, values);
+
+ return 0;
+}
+
+static int mdio_mux_gpio_probe(struct platform_device *pdev)
+{
+ struct mdio_mux_gpio_state *s;
+ struct gpio_descs *gpios;
+ int r;
+
+ gpios = devm_gpiod_get_array(&pdev->dev, NULL, GPIOD_OUT_LOW);
+ if (IS_ERR(gpios))
+ return PTR_ERR(gpios);
+
+ s = devm_kzalloc(&pdev->dev, sizeof(*s), GFP_KERNEL);
+ if (!s)
+ return -ENOMEM;
+
+ s->gpios = gpios;
+
+ r = mdio_mux_init(&pdev->dev, pdev->dev.of_node,
+ mdio_mux_gpio_switch_fn, &s->mux_handle, s, NULL);
+
+ if (r != 0)
+ return r;
+
+ pdev->dev.platform_data = s;
+ return 0;
+}
+
+static int mdio_mux_gpio_remove(struct platform_device *pdev)
+{
+ struct mdio_mux_gpio_state *s = dev_get_platdata(&pdev->dev);
+ mdio_mux_uninit(s->mux_handle);
+ return 0;
+}
+
+static const struct of_device_id mdio_mux_gpio_match[] = {
+ {
+ .compatible = "mdio-mux-gpio",
+ },
+ {
+ /* Legacy compatible property. */
+ .compatible = "cavium,mdio-mux-sn74cbtlv3253",
+ },
+ {},
+};
+MODULE_DEVICE_TABLE(of, mdio_mux_gpio_match);
+
+static struct platform_driver mdio_mux_gpio_driver = {
+ .driver = {
+ .name = "mdio-mux-gpio",
+ .of_match_table = mdio_mux_gpio_match,
+ },
+ .probe = mdio_mux_gpio_probe,
+ .remove = mdio_mux_gpio_remove,
+};
+
+module_platform_driver(mdio_mux_gpio_driver);
+
+MODULE_DESCRIPTION(DRV_DESCRIPTION);
+MODULE_VERSION(DRV_VERSION);
+MODULE_AUTHOR("David Daney");
+MODULE_LICENSE("GPL v2");