[PATCH net-next v9 3/6] net: stmmac: qcom-ethqos: wrap emac driver data in additional structure

Bartosz Golaszewski
2026-03-16T12:05:45Z

From: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>

As the first step in enabling power domain support in the driver, we'll
split the device match data and runtime data structures into their
general and power-management-specific parts. To allow that: first wrap
the emac driver data in another layer which will later be expanded.

Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
---
.../ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c | 52 +++++++++++++++-------
1 file changed, 37 insertions(+), 15 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c
index 66fd2ed2c2c8428694c07d89220d0e1608546791..8fda6c128117d7f5b1dece68c919f2a09a511210 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c
@@ -97,6 +97,10 @@ struct ethqos_emac_driver_data {
bool needs_sgmii_loopback;
};

+struct ethqos_emac_match_data {
+ const struct ethqos_emac_driver_data *drv_data;
+};
+
struct qcom_ethqos {
struct platform_device *pdev;
void __iomem *rgmii_base;
@@ -223,6 +227,10 @@ static const struct ethqos_emac_driver_data emac_v2_3_0_data = {
.has_emac_ge_3 = false,
};

+static const struct ethqos_emac_match_data emac_qcs404_data = {
+ .drv_data = &emac_v2_3_0_data,
+};
+
static const struct ethqos_emac_por emac_v2_1_0_por[] = {
{ .offset = RGMII_IO_MACRO_CONFIG, .value = 0x40C01343 },
{ .offset = SDCC_HC_REG_DLL_CONFIG, .value = 0x2004642C },
@@ -239,6 +247,10 @@ static const struct ethqos_emac_driver_data emac_v2_1_0_data = {
.has_emac_ge_3 = false,
};

+static const struct ethqos_emac_match_data emac_sm8150_data = {
+ .drv_data = &emac_v2_1_0_data,
+};
+
static const struct ethqos_emac_por emac_v3_0_0_por[] = {
{ .offset = RGMII_IO_MACRO_CONFIG, .value = 0x40c01343 },
{ .offset = SDCC_HC_REG_DLL_CONFIG, .value = 0x2004642c },
@@ -271,6 +283,10 @@ static const struct ethqos_emac_driver_data emac_v3_0_0_data = {
},
};

+static const struct ethqos_emac_match_data emac_sc8280xp_data = {
+ .drv_data = &emac_v3_0_0_data,
+};
+
static const struct ethqos_emac_por emac_v4_0_0_por[] = {
{ .offset = RGMII_IO_MACRO_CONFIG, .value = 0x40c01343 },
{ .offset = SDCC_HC_REG_DLL_CONFIG, .value = 0x2004642c },
@@ -306,6 +322,10 @@ static const struct ethqos_emac_driver_data emac_v4_0_0_data = {
},
};

+static const struct ethqos_emac_match_data emac_sa8775p_data = {
+ .drv_data = &emac_v4_0_0_data,
+};
+
static int ethqos_dll_configure(struct qcom_ethqos *ethqos)
{
struct device *dev = &ethqos->pdev->dev;
@@ -728,7 +748,8 @@ static void ethqos_ptp_clk_freq_config(struct stmmac_priv *priv)

static int qcom_ethqos_probe(struct platform_device *pdev)
{
- const struct ethqos_emac_driver_data *data;
+ const struct ethqos_emac_driver_data *drv_data;
+ const struct ethqos_emac_match_data *data;
struct plat_stmmacenet_data *plat_dat;
struct stmmac_resources stmmac_res;
struct device *dev = &pdev->dev;
@@ -778,13 +799,14 @@ static int qcom_ethqos_probe(struct platform_device *pdev)
"Failed to map rgmii resource\n");

data = device_get_match_data(dev);
- ethqos->rgmii_por = data->rgmii_por;
- ethqos->num_rgmii_por = data->num_rgmii_por;
- ethqos->rgmii_config_loopback_en = data->rgmii_config_loopback_en;
- ethqos->has_emac_ge_3 = data->has_emac_ge_3;
- ethqos->needs_sgmii_loopback = data->needs_sgmii_loopback;
-
- ethqos->link_clk = devm_clk_get(dev, data->link_clk_name ?: "rgmii");
+ drv_data = data->drv_data;
+ ethqos->rgmii_por = drv_data->rgmii_por;
+ ethqos->num_rgmii_por = drv_data->num_rgmii_por;
+ ethqos->rgmii_config_loopback_en = drv_data->rgmii_config_loopback_en;
+ ethqos->has_emac_ge_3 = drv_data->has_emac_ge_3;
+ ethqos->needs_sgmii_loopback = drv_data->needs_sgmii_loopback;
+
+ ethqos->link_clk = devm_clk_get(dev, drv_data->link_clk_name ?: "rgmii");
if (IS_ERR(ethqos->link_clk))
return dev_err_probe(dev, PTR_ERR(ethqos->link_clk),
"Failed to get link_clk\n");
@@ -815,14 +837,14 @@ static int qcom_ethqos_probe(struct platform_device *pdev)
plat_dat->ptp_clk_freq_config = ethqos_ptp_clk_freq_config;
plat_dat->core_type = DWMAC_CORE_GMAC4;
if (ethqos->has_emac_ge_3)
- plat_dat->dwmac4_addrs = &data->dwmac4_addrs;
+ plat_dat->dwmac4_addrs = &drv_data->dwmac4_addrs;
plat_dat->pmt = true;
if (device_property_present(dev, "snps,tso"))
plat_dat->flags |= STMMAC_FLAG_TSO_EN;
if (device_is_compatible(dev, "qcom,qcs404-ethqos"))
plat_dat->flags |= STMMAC_FLAG_RX_CLK_RUNS_IN_LPI;
- if (data->dma_addr_width)
- plat_dat->host_dma_width = data->dma_addr_width;
+ if (drv_data->dma_addr_width)
+ plat_dat->host_dma_width = drv_data->dma_addr_width;

if (ethqos->serdes_phy) {
plat_dat->serdes_powerup = qcom_ethqos_serdes_powerup;
@@ -837,10 +859,10 @@ static int qcom_ethqos_probe(struct platform_device *pdev)
}

static const struct of_device_id qcom_ethqos_match[] = {
- { .compatible = "qcom,qcs404-ethqos", .data = &emac_v2_3_0_data},
- { .compatible = "qcom,sa8775p-ethqos", .data = &emac_v4_0_0_data},
- { .compatible = "qcom,sc8280xp-ethqos", .data = &emac_v3_0_0_data},
- { .compatible = "qcom,sm8150-ethqos", .data = &emac_v2_1_0_data},
+ { .compatible = "qcom,qcs404-ethqos", .data = &emac_qcs404_data},
+ { .compatible = "qcom,sa8775p-ethqos", .data = &emac_sa8775p_data},
+ { .compatible = "qcom,sc8280xp-ethqos", .data = &emac_sc8280xp_data},
+ { .compatible = "qcom,sm8150-ethqos", .data = &emac_sm8150_data},
{ }
};
MODULE_DEVICE_TABLE(of, qcom_ethqos_match);

--
2.47.3