Commit cc13e52c authored by Michael Grzeschik's avatar Michael Grzeschik Committed by David S. Miller
Browse files

net: dsa: microchip: Add Microchip KSZ8863 SPI based driver support 



Add KSZ88X3 driver support. We add support for the KXZ88X3 three port
switches using the SPI Interface.

Reviewed-by: default avatarFlorian Fainelli <f.fainelli@gmail.com>
Signed-off-by: default avatarMichael Grzeschik <m.grzeschik@pengutronix.de>
Signed-off-by: default avatarOleksij Rempel <o.rempel@pengutronix.de>
Reviewed-by: default avatarAndrew Lunn <andrew@lunn.ch>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 4b20a07e

drivers/net/dsa/microchip/ksz8795_spi.c

+32 −12
Original line number Diff line number Diff line
@@ -14,34 +14,52 @@ 
#include <linux/regmap.h>

#include <linux/spi/spi.h>



#include "ksz8.h"

#include "ksz_common.h"



#define SPI_ADDR_SHIFT			12

#define SPI_ADDR_ALIGN			3

#define SPI_TURNAROUND_SHIFT		1

#define KSZ8795_SPI_ADDR_SHIFT			12

#define KSZ8795_SPI_ADDR_ALIGN			3

#define KSZ8795_SPI_TURNAROUND_SHIFT		1



KSZ_REGMAP_TABLE(ksz8795, 16, SPI_ADDR_SHIFT,

		 SPI_TURNAROUND_SHIFT, SPI_ADDR_ALIGN);

#define KSZ8863_SPI_ADDR_SHIFT			8

#define KSZ8863_SPI_ADDR_ALIGN			8

#define KSZ8863_SPI_TURNAROUND_SHIFT		0



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);



static int ksz8795_spi_probe(struct spi_device *spi)

{

	const struct regmap_config *regmap_config;

	struct device *ddev = &spi->dev;

	struct regmap_config rc;

	struct ksz_device *dev;

	int i, ret;

	struct ksz8 *ksz8;

	int i, ret = 0;



	dev = ksz_switch_alloc(&spi->dev, spi);

	ksz8 = devm_kzalloc(&spi->dev, sizeof(struct ksz8), GFP_KERNEL);

	ksz8->priv = spi;



	dev = ksz_switch_alloc(&spi->dev, ksz8);

	if (!dev)

		return -ENOMEM;



	regmap_config = device_get_match_data(ddev);

	if (!regmap_config)

		return -EINVAL;



	for (i = 0; i < ARRAY_SIZE(ksz8795_regmap_config); i++) {

		rc = ksz8795_regmap_config[i];

		rc = regmap_config[i];

		rc.lock_arg = &dev->regmap_mutex;

		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",

				ksz8795_regmap_config[i].val_bits, ret);

				regmap_config[i].val_bits, ret);

			return ret;

		}

	}
@@ -85,9 +103,11 @@ static void ksz8795_spi_shutdown(struct spi_device *spi) 
}



static const struct of_device_id ksz8795_dt_ids[] = {

	{ .compatible = "microchip,ksz8765" },

	{ .compatible = "microchip,ksz8794" },

	{ .compatible = "microchip,ksz8795" },

	{ .compatible = "microchip,ksz8765", .data = &ksz8795_regmap_config },

	{ .compatible = "microchip,ksz8794", .data = &ksz8795_regmap_config },

	{ .compatible = "microchip,ksz8795", .data = &ksz8795_regmap_config },

	{ .compatible = "microchip,ksz8863", .data = &ksz8863_regmap_config },

	{ .compatible = "microchip,ksz8873", .data = &ksz8863_regmap_config },

	{},

};

MODULE_DEVICE_TABLE(of, ksz8795_dt_ids);