Adding upstream version 6.1.76.upstream/6.1.76upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 246 insertions, 0 deletions

diff --git a/drivers/net/dsa/microchip/ksz_spi.c b/drivers/net/dsa/microchip/ksz_spi.c
new file mode 100644
index 000000000..1b6ab891b
--- /dev/null
+++ b/drivers/net/dsa/microchip/ksz_spi.c
@@ -0,0 +1,246 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Microchip ksz series register access through SPI
+ *
+ * Copyright (C) 2017 Microchip Technology Inc.
+ *	Tristram Ha <Tristram.Ha@microchip.com>
+ */
+
+#include <asm/unaligned.h>
+
+#include <linux/delay.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/regmap.h>
+#include <linux/spi/spi.h>
+
+#include "ksz_common.h"
+
+#define KSZ8795_SPI_ADDR_SHIFT			12
+#define KSZ8795_SPI_ADDR_ALIGN			3
+#define KSZ8795_SPI_TURNAROUND_SHIFT		1
+
+#define KSZ8863_SPI_ADDR_SHIFT			8
+#define KSZ8863_SPI_ADDR_ALIGN			8
+#define KSZ8863_SPI_TURNAROUND_SHIFT		0
+
+#define KSZ9477_SPI_ADDR_SHIFT			24
+#define KSZ9477_SPI_ADDR_ALIGN			3
+#define KSZ9477_SPI_TURNAROUND_SHIFT		5
+
+KSZ_REGMAP_TABLE(ksz8795, 16, KSZ8795_SPI_ADDR_SHIFT,
+		 KSZ8795_SPI_TURNAROUND_SHIFT, KSZ8795_SPI_ADDR_ALIGN);
+
+KSZ_REGMAP_TABLE(ksz8863, 16, KSZ8863_SPI_ADDR_SHIFT,
+		 KSZ8863_SPI_TURNAROUND_SHIFT, KSZ8863_SPI_ADDR_ALIGN);
+
+KSZ_REGMAP_TABLE(ksz9477, 32, KSZ9477_SPI_ADDR_SHIFT,
+		 KSZ9477_SPI_TURNAROUND_SHIFT, KSZ9477_SPI_ADDR_ALIGN);
+
+static int ksz_spi_probe(struct spi_device *spi)
+{
+	const struct regmap_config *regmap_config;
+	const struct ksz_chip_data *chip;
+	struct device *ddev = &spi->dev;
+	struct regmap_config rc;
+	struct ksz_device *dev;
+	int i, ret = 0;
+
+	dev = ksz_switch_alloc(&spi->dev, spi);
+	if (!dev)
+		return -ENOMEM;
+
+	chip = device_get_match_data(ddev);
+	if (!chip)
+		return -EINVAL;
+
+	if (chip->chip_id == KSZ8830_CHIP_ID)
+		regmap_config = ksz8863_regmap_config;
+	else if (chip->chip_id == KSZ8795_CHIP_ID ||
+		 chip->chip_id == KSZ8794_CHIP_ID ||
+		 chip->chip_id == KSZ8765_CHIP_ID)
+		regmap_config = ksz8795_regmap_config;
+	else
+		regmap_config = ksz9477_regmap_config;
+
+	for (i = 0; i < ARRAY_SIZE(ksz8795_regmap_config); i++) {
+		rc = regmap_config[i];
+		rc.lock_arg = &dev->regmap_mutex;
+		rc.wr_table = chip->wr_table;
+		rc.rd_table = chip->rd_table;
+		dev->regmap[i] = devm_regmap_init_spi(spi, &rc);
+
+		if (IS_ERR(dev->regmap[i])) {
+			ret = PTR_ERR(dev->regmap[i]);
+			dev_err(&spi->dev,
+				"Failed to initialize regmap%i: %d\n",
+				regmap_config[i].val_bits, ret);
+			return ret;
+		}
+	}
+
+	if (spi->dev.platform_data)
+		dev->pdata = spi->dev.platform_data;
+
+	/* setup spi */
+	spi->mode = SPI_MODE_3;
+	ret = spi_setup(spi);
+	if (ret)
+		return ret;
+
+	dev->irq = spi->irq;
+
+	ret = ksz_switch_register(dev);
+
+	/* Main DSA driver may not be started yet. */
+	if (ret)
+		return ret;
+
+	spi_set_drvdata(spi, dev);
+
+	return 0;
+}
+
+static void ksz_spi_remove(struct spi_device *spi)
+{
+	struct ksz_device *dev = spi_get_drvdata(spi);
+
+	if (dev)
+		ksz_switch_remove(dev);
+}
+
+static void ksz_spi_shutdown(struct spi_device *spi)
+{
+	struct ksz_device *dev = spi_get_drvdata(spi);
+
+	if (!dev)
+		return;
+
+	if (dev->dev_ops->reset)
+		dev->dev_ops->reset(dev);
+
+	dsa_switch_shutdown(dev->ds);
+
+	spi_set_drvdata(spi, NULL);
+}
+
+static const struct of_device_id ksz_dt_ids[] = {
+	{
+		.compatible = "microchip,ksz8765",
+		.data = &ksz_switch_chips[KSZ8765]
+	},
+	{
+		.compatible = "microchip,ksz8794",
+		.data = &ksz_switch_chips[KSZ8794]
+	},
+	{
+		.compatible = "microchip,ksz8795",
+		.data = &ksz_switch_chips[KSZ8795]
+	},
+	{
+		.compatible = "microchip,ksz8863",
+		.data = &ksz_switch_chips[KSZ8830]
+	},
+	{
+		.compatible = "microchip,ksz8873",
+		.data = &ksz_switch_chips[KSZ8830]
+	},
+	{
+		.compatible = "microchip,ksz9477",
+		.data = &ksz_switch_chips[KSZ9477]
+	},
+	{
+		.compatible = "microchip,ksz9896",
+		.data = &ksz_switch_chips[KSZ9896]
+	},
+	{
+		.compatible = "microchip,ksz9897",
+		.data = &ksz_switch_chips[KSZ9897]
+	},
+	{
+		.compatible = "microchip,ksz9893",
+		.data = &ksz_switch_chips[KSZ9893]
+	},
+	{
+		.compatible = "microchip,ksz9563",
+		.data = &ksz_switch_chips[KSZ9893]
+	},
+	{
+		.compatible = "microchip,ksz8563",
+		.data = &ksz_switch_chips[KSZ8563]
+	},
+	{
+		.compatible = "microchip,ksz9567",
+		.data = &ksz_switch_chips[KSZ9567]
+	},
+	{
+		.compatible = "microchip,lan9370",
+		.data = &ksz_switch_chips[LAN9370]
+	},
+	{
+		.compatible = "microchip,lan9371",
+		.data = &ksz_switch_chips[LAN9371]
+	},
+	{
+		.compatible = "microchip,lan9372",
+		.data = &ksz_switch_chips[LAN9372]
+	},
+	{
+		.compatible = "microchip,lan9373",
+		.data = &ksz_switch_chips[LAN9373]
+	},
+	{
+		.compatible = "microchip,lan9374",
+		.data = &ksz_switch_chips[LAN9374]
+	},
+	{},
+};
+MODULE_DEVICE_TABLE(of, ksz_dt_ids);
+
+static const struct spi_device_id ksz_spi_ids[] = {
+	{ "ksz8765" },
+	{ "ksz8794" },
+	{ "ksz8795" },
+	{ "ksz8863" },
+	{ "ksz8873" },
+	{ "ksz9477" },
+	{ "ksz9896" },
+	{ "ksz9897" },
+	{ "ksz9893" },
+	{ "ksz9563" },
+	{ "ksz8563" },
+	{ "ksz9567" },
+	{ "lan9370" },
+	{ "lan9371" },
+	{ "lan9372" },
+	{ "lan9373" },
+	{ "lan9374" },
+	{ },
+};
+MODULE_DEVICE_TABLE(spi, ksz_spi_ids);
+
+static struct spi_driver ksz_spi_driver = {
+	.driver = {
+		.name	= "ksz-switch",
+		.owner	= THIS_MODULE,
+		.of_match_table = ksz_dt_ids,
+	},
+	.id_table = ksz_spi_ids,
+	.probe	= ksz_spi_probe,
+	.remove	= ksz_spi_remove,
+	.shutdown = ksz_spi_shutdown,
+};
+
+module_spi_driver(ksz_spi_driver);
+
+MODULE_ALIAS("spi:ksz9477");
+MODULE_ALIAS("spi:ksz9896");
+MODULE_ALIAS("spi:ksz9897");
+MODULE_ALIAS("spi:ksz9893");
+MODULE_ALIAS("spi:ksz9563");
+MODULE_ALIAS("spi:ksz8563");
+MODULE_ALIAS("spi:ksz9567");
+MODULE_ALIAS("spi:lan937x");
+MODULE_AUTHOR("Tristram Ha <Tristram.Ha@microchip.com>");
+MODULE_DESCRIPTION("Microchip ksz Series Switch SPI Driver");
+MODULE_LICENSE("GPL");