diff mbox series

[1/2] phy: qualcomm: eusb2-repeater: Fix the regfields for multiple instances

Message ID 20240104-phy-qcom-eusb2-repeater-fixes-v1-1-047b7b6b8333@linaro.org
State Superseded
Headers show
Series phy: qualcomm: eusb2-repeater: Some fixes after the regmap rework | expand

Commit Message

Abel Vesa Jan. 4, 2024, 2:52 p.m. UTC 
The global regmap fields offsets currently get incremented with the base
address of the repeater. This issue doesn't get noticed unless the probe
defers or there are multiple repeaters on that platform. So instead of
incrementing the global ones, copy them for each instance of the
repeater.

Fixes: 4ba2e52718c0 ("phy: qualcomm: phy-qcom-eusb2-repeater: Use regmap_fields")
Signed-off-by: Abel Vesa <abel.vesa@linaro.org>
---
 drivers/phy/qualcomm/phy-qcom-eusb2-repeater.c | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

Comments

Konrad Dybcio Jan. 4, 2024, 10:46 p.m. UTC | #1 
On 4.01.2024 15:52, Abel Vesa wrote:
> The global regmap fields offsets currently get incremented with the base
> address of the repeater. This issue doesn't get noticed unless the probe
> defers or there are multiple repeaters on that platform. So instead of
> incrementing the global ones, copy them for each instance of the
> repeater.
> 
> Fixes: 4ba2e52718c0 ("phy: qualcomm: phy-qcom-eusb2-repeater: Use regmap_fields")
> Signed-off-by: Abel Vesa <abel.vesa@linaro.org>
> ---
Ohh I wouldn't have thought about this.. Nice spot!

[...]

> -	struct reg_field *regfields = eusb2_repeater_tune_reg_fields;
>  	struct eusb2_repeater *rptr = phy_get_drvdata(phy);
> +	struct reg_field *regfields = rptr->regfields;
Without this:

Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>

Konrad
diff mbox series

Patch

diff --git a/drivers/phy/qualcomm/phy-qcom-eusb2-repeater.c b/drivers/phy/qualcomm/phy-qcom-eusb2-repeater.c
index a623f092b11f..5f5862a68b73 100644
--- a/drivers/phy/qualcomm/phy-qcom-eusb2-repeater.c
+++ b/drivers/phy/qualcomm/phy-qcom-eusb2-repeater.c
@@ -101,6 +101,7 @@  struct eusb2_repeater {
 	struct regmap_field *regs[F_NUM_FIELDS];
 	struct phy *phy;
 	struct regulator_bulk_data *vregs;
+	struct reg_field *regfields;
 	const struct eusb2_repeater_cfg *cfg;
 	enum phy_mode mode;
 };
@@ -140,8 +141,8 @@  static int eusb2_repeater_init_vregs(struct eusb2_repeater *rptr)
 
 static int eusb2_repeater_init(struct phy *phy)
 {
-	struct reg_field *regfields = eusb2_repeater_tune_reg_fields;
 	struct eusb2_repeater *rptr = phy_get_drvdata(phy);
+	struct reg_field *regfields = rptr->regfields;
 	struct device_node *np = rptr->dev->of_node;
 	u32 init_tbl[F_NUM_TUNE_FIELDS] = { 0 };
 	u8 override;
@@ -262,15 +263,21 @@  static int eusb2_repeater_probe(struct platform_device *pdev)
 	if (!regmap)
 		return -ENODEV;
 
+	rptr->regfields = devm_kmemdup(dev, eusb2_repeater_tune_reg_fields,
+				       sizeof(eusb2_repeater_tune_reg_fields),
+				       GFP_KERNEL);
+	if (!rptr->regfields)
+		return -ENOMEM;
+
 	ret = of_property_read_u32(np, "reg", &res);
 	if (ret < 0)
 		return ret;
 
 	for (i = 0; i < F_NUM_FIELDS; i++)
-		eusb2_repeater_tune_reg_fields[i].reg += res;
+		rptr->regfields[i].reg += res;
 
 	ret = devm_regmap_field_bulk_alloc(dev, regmap, rptr->regs,
-					   eusb2_repeater_tune_reg_fields,
+					   rptr->regfields,
 					   F_NUM_FIELDS);
 	if (ret)
 		return ret;