[PATCH net-next v3 11/12] net: stmmac: dwmac-qcom-ethqos: Use loopback_en for all speeds

Andrew Halaney
2023-03-31T21:49:31Z

It seems that this variable should be used for all speeds, not just
1000/100.

While at it refactor it slightly to be more readable, including fixing
the typo in the variable name.

Signed-off-by: Andrew Halaney <ahalaney@redhat.com>
---

Changes since v2:
* None
Changes since v1:
* Use a consistent subject prefix with other stmmac changes in series (myself)

.../stmicro/stmmac/dwmac-qcom-ethqos.c | 36 +++++++++----------
1 file changed, 17 insertions(+), 19 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c
index abec6dd27992..ec9e93147716 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c
@@ -78,7 +78,7 @@ struct ethqos_emac_por {
struct ethqos_emac_driver_data {
const struct ethqos_emac_por *por;
unsigned int num_por;
- bool rgmii_config_looback_en;
+ bool rgmii_config_loopback_en;
};

struct qcom_ethqos {
@@ -91,7 +91,7 @@ struct qcom_ethqos {

const struct ethqos_emac_por *por;
unsigned int num_por;
- bool rgmii_config_looback_en;
+ bool rgmii_config_loopback_en;
};

static int rgmii_readl(struct qcom_ethqos *ethqos, unsigned int offset)
@@ -183,7 +183,7 @@ static const struct ethqos_emac_por emac_v2_3_0_por[] = {
static const struct ethqos_emac_driver_data emac_v2_3_0_data = {
.por = emac_v2_3_0_por,
.num_por = ARRAY_SIZE(emac_v2_3_0_por),
- .rgmii_config_looback_en = true,
+ .rgmii_config_loopback_en = true,
};

static const struct ethqos_emac_por emac_v2_1_0_por[] = {
@@ -198,7 +198,7 @@ static const struct ethqos_emac_por emac_v2_1_0_por[] = {
static const struct ethqos_emac_driver_data emac_v2_1_0_data = {
.por = emac_v2_1_0_por,
.num_por = ARRAY_SIZE(emac_v2_1_0_por),
- .rgmii_config_looback_en = false,
+ .rgmii_config_loopback_en = false,
};

static int ethqos_dll_configure(struct qcom_ethqos *ethqos)
@@ -281,6 +281,7 @@ static int ethqos_rgmii_macro_init(struct qcom_ethqos *ethqos)
{
int phase_shift;
int phy_mode;
+ int loopback;

/* Determine if the PHY adds a 2 ns TX delay or the MAC handles it */
phy_mode = device_get_phy_mode(&ethqos->pdev->dev);
@@ -294,6 +295,12 @@ static int ethqos_rgmii_macro_init(struct qcom_ethqos *ethqos)
rgmii_updatel(ethqos, RGMII_CONFIG2_TX_TO_RX_LOOPBACK_EN,
0, RGMII_IO_MACRO_CONFIG2);

+ /* Determine if this platform wants loopback enabled after programming */
+ if (ethqos->rgmii_config_loopback_en)
+ loopback = RGMII_CONFIG_LOOPBACK_EN;
+ else
+ loopback = 0;
+
/* Select RGMII, write 0 to interface select */
rgmii_updatel(ethqos, RGMII_CONFIG_INTF_SEL,
0, RGMII_IO_MACRO_CONFIG);
@@ -326,12 +333,8 @@ static int ethqos_rgmii_macro_init(struct qcom_ethqos *ethqos)
rgmii_updatel(ethqos, SDCC_DDR_CONFIG_PRG_DLY_EN,
SDCC_DDR_CONFIG_PRG_DLY_EN,
SDCC_HC_REG_DDR_CONFIG);
- if (ethqos->rgmii_config_looback_en)
- rgmii_updatel(ethqos, RGMII_CONFIG_LOOPBACK_EN,
- RGMII_CONFIG_LOOPBACK_EN, RGMII_IO_MACRO_CONFIG);
- else
- rgmii_updatel(ethqos, RGMII_CONFIG_LOOPBACK_EN,
- 0, RGMII_IO_MACRO_CONFIG);
+ rgmii_updatel(ethqos, RGMII_CONFIG_LOOPBACK_EN,
+ loopback, RGMII_IO_MACRO_CONFIG);
break;

case SPEED_100:
@@ -363,13 +366,8 @@ static int ethqos_rgmii_macro_init(struct qcom_ethqos *ethqos)
rgmii_updatel(ethqos, SDCC_DDR_CONFIG_EXT_PRG_RCLK_DLY_EN,
SDCC_DDR_CONFIG_EXT_PRG_RCLK_DLY_EN,
SDCC_HC_REG_DDR_CONFIG);
- if (ethqos->rgmii_config_looback_en)
- rgmii_updatel(ethqos, RGMII_CONFIG_LOOPBACK_EN,
- RGMII_CONFIG_LOOPBACK_EN, RGMII_IO_MACRO_CONFIG);
- else
- rgmii_updatel(ethqos, RGMII_CONFIG_LOOPBACK_EN,
- 0, RGMII_IO_MACRO_CONFIG);
-
+ rgmii_updatel(ethqos, RGMII_CONFIG_LOOPBACK_EN,
+ loopback, RGMII_IO_MACRO_CONFIG);
break;

case SPEED_10:
@@ -403,7 +401,7 @@ static int ethqos_rgmii_macro_init(struct qcom_ethqos *ethqos)
SDCC_DDR_CONFIG_EXT_PRG_RCLK_DLY_EN,
SDCC_HC_REG_DDR_CONFIG);
rgmii_updatel(ethqos, RGMII_CONFIG_LOOPBACK_EN,
- RGMII_CONFIG_LOOPBACK_EN, RGMII_IO_MACRO_CONFIG);
+ loopback, RGMII_IO_MACRO_CONFIG);
break;
default:
dev_err(&ethqos->pdev->dev,
@@ -548,7 +546,7 @@ static int qcom_ethqos_probe(struct platform_device *pdev)
data = of_device_get_match_data(&pdev->dev);
ethqos->por = data->por;
ethqos->num_por = data->num_por;
- ethqos->rgmii_config_looback_en = data->rgmii_config_looback_en;
+ ethqos->rgmii_config_loopback_en = data->rgmii_config_loopback_en;

ethqos->rgmii_clk = devm_clk_get(&pdev->dev, "rgmii");
if (IS_ERR(ethqos->rgmii_clk)) {
--
2.39.2