phy: sparx5-serdes: add support for private match data

In order to reuse the existing Sparx5 SERDES driver for lan969x, we add
support for private match data, with initial fields for the iomap and
imap_size.

Signed-off-by: Daniel Machon <daniel.machon@microchip.com>
Reviewed-by: Steen Hegelund <Steen.Hegelund@microchip.com>
Link: https://lore.kernel.org/r/20240909-sparx5-lan969x-serdes-driver-v2-1-d695bcb57b84@microchip.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>

diff --git a/drivers/phy/microchip/sparx5_serdes.c b/drivers/phy/microchip/sparx5_serdes.c
index 7cb85029fab399e61b3e7f973b3730e4ad3f295b..5427e8627a7871811733d05b5d366d6e5f6d920f 100644 (file)
--- a/drivers/phy/microchip/sparx5_serdes.c
+++ b/drivers/phy/microchip/sparx5_serdes.c
@@ -2507,6 +2507,11 @@ static struct sparx5_serdes_io_resource sparx5_serdes_iomap[] =  {
        { TARGET_SD_LANE_25G + 7, 0x5c8000 }, /* 0x610dd0000: sd_lane_25g_32 */
 };
 
+static const struct sparx5_serdes_match_data sparx5_desc = {
+       .iomap = sparx5_serdes_iomap,
+       .iomap_size = ARRAY_SIZE(sparx5_serdes_iomap),
+};
+
 /* Client lookup function, uses serdes index */
 static struct phy *sparx5_serdes_xlate(struct device *dev,
                                     const struct of_phandle_args *args)
@@ -2555,6 +2560,10 @@ static int sparx5_serdes_probe(struct platform_device *pdev)
        platform_set_drvdata(pdev, priv);
        priv->dev = &pdev->dev;
 
+       priv->data = device_get_match_data(priv->dev);
+       if (!priv->data)
+               return -EINVAL;
+
        /* Get coreclock */
        clk = devm_clk_get(priv->dev, NULL);
        if (IS_ERR(clk)) {
@@ -2579,8 +2588,9 @@ static int sparx5_serdes_probe(struct platform_device *pdev)
                        iores->name);
                return -ENOMEM;
        }
-       for (idx = 0; idx < ARRAY_SIZE(sparx5_serdes_iomap); idx++) {
-               struct sparx5_serdes_io_resource *iomap = &sparx5_serdes_iomap[idx];
+       for (idx = 0; idx < priv->data->iomap_size; idx++) {
+               const struct sparx5_serdes_io_resource *iomap =
+                       &priv->data->iomap[idx];
 
                priv->regs[iomap->id] = iomem + iomap->offset;
        }
@@ -2599,7 +2609,7 @@ static int sparx5_serdes_probe(struct platform_device *pdev)
 }
 
 static const struct of_device_id sparx5_serdes_match[] = {
-       { .compatible = "microchip,sparx5-serdes" },
+       { .compatible = "microchip,sparx5-serdes", .data = &sparx5_desc },
        { }
 };
 MODULE_DEVICE_TABLE(of, sparx5_serdes_match);

diff --git a/drivers/phy/microchip/sparx5_serdes.h b/drivers/phy/microchip/sparx5_serdes.h
index 13f94a29225a40c533af45fcb98bfa943964c8d9..128f8c53172f129e6e7558f833e4428a53868739 100644 (file)
--- a/drivers/phy/microchip/sparx5_serdes.h
+++ b/drivers/phy/microchip/sparx5_serdes.h
@@ -26,11 +26,17 @@ enum sparx5_serdes_mode {
        SPX5_SD_MODE_SFI,
 };
 
+struct sparx5_serdes_match_data {
+       const struct sparx5_serdes_io_resource *iomap;
+       int iomap_size;
+};
+
 struct sparx5_serdes_private {
        struct device *dev;
        void __iomem *regs[NUM_TARGETS];
        struct phy *phys[SPX5_SERDES_MAX];
        unsigned long coreclock;
+       const struct sparx5_serdes_match_data *data;
 };
 
 struct sparx5_serdes_macro {