Add KSZ88X3 driver support. We add support for the KXZ88X3 three port
switches using the SPI Interface.
Signed-off-by: Michael Grzeschik <m.grzesc...@pengutronix.de>
---
v1 -> v2: - this glue was not implemented
v2 -> v3: - this glue was part of previous bigger patch
v3 -> v4: - this glue was moved to this separate patch
drivers/net/dsa/microchip/ksz8795_spi.c | 62 ++++++++++++++++++-------
1 file changed, 45 insertions(+), 17 deletions(-)
diff --git a/drivers/net/dsa/microchip/ksz8795_spi.c
b/drivers/net/dsa/microchip/ksz8795_spi.c
index 3bab09c46f6a7bd..d13a83c27428cdc 100644
--- a/drivers/net/dsa/microchip/ksz8795_spi.c
+++ b/drivers/net/dsa/microchip/ksz8795_spi.c
@@ -14,34 +14,70 @@
#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 const struct of_device_id ksz8795_dt_ids[] = {
+ { .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);
static int ksz8795_spi_probe(struct spi_device *spi)
{
+ const struct regmap_config *regmap_config;
+ const struct of_device_id *match;
+ struct device *ddev = &spi->dev;
+ struct ksz8 *ksz8;
struct regmap_config rc;
struct ksz_device *dev;
- int i, ret;
+ 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 = ksz8795_regmap_config;
+
+ if (ddev->of_node) {
+ match = of_match_node(ksz8795_dt_ids, ddev->of_node);
+ if (!match)
+ return -ENOTSUPP;
+
+ if (match->data)
+ regmap_config = match->data;
+ }
+
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;
}
}
@@ -78,14 +114,6 @@ static void ksz8795_spi_shutdown(struct spi_device *spi)
dev->dev_ops->shutdown(dev);
}
-static const struct of_device_id ksz8795_dt_ids[] = {
- { .compatible = "microchip,ksz8765" },
- { .compatible = "microchip,ksz8794" },
- { .compatible = "microchip,ksz8795" },
- {},
-};
-MODULE_DEVICE_TABLE(of, ksz8795_dt_ids);
-
static struct spi_driver ksz8795_spi_driver = {
.driver = {
.name = "ksz8795-switch",
--
2.28.0
