soc: qcom: geni-se: Enable QUPs on SA8255p Qualcomm platforms

On the sa8255p platform, resources such as clocks,interconnects
and TLMM (GPIO) configurations are managed by firmware.

Use the `num_clks` field in platform data to distinguish whether
resource control is performed by firmware or directly by the driver
in linux.

Signed-off-by: Praveen Talari <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>

Author: Praveen Talari

drivers/soc/qcom/qcom-geni-se.c

@@ -895,6 +895,7 @@ static int geni_se_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
 	struct geni_wrapper *wrapper;
+	const struct geni_se_desc *desc;
 	int ret;
 
 	wrapper = devm_kzalloc(dev, sizeof(*wrapper), GFP_KERNEL);
@@ -906,13 +907,10 @@ static int geni_se_probe(struct platform_device *pdev)
 	if (IS_ERR(wrapper->base))
 		return PTR_ERR(wrapper->base);
 
-	if (!has_acpi_companion(&pdev->dev)) {
-		const struct geni_se_desc *desc;
-		int i;
+	desc = device_get_match_data(&pdev->dev);
 
-		desc = device_get_match_data(&pdev->dev);
-		if (!desc)
-			return -EINVAL;
+	if (!has_acpi_companion(&pdev->dev) && desc->num_clks) {
+		int i;
 
 		wrapper->num_clks = min_t(unsigned int, desc->num_clks, MAX_CLKS);
 
@@ -953,6 +951,8 @@ static const struct geni_se_desc qup_desc = {
 	.num_clks = ARRAY_SIZE(qup_clks),
 };
 
+static const struct geni_se_desc sa8255p_qup_desc = {};
+
 static const char * const i2c_master_hub_clks[] = {
 	"s-ahb",
 };
@@ -965,6 +965,7 @@ static const struct geni_se_desc i2c_master_hub_desc = {
 static const struct of_device_id geni_se_dt_match[] = {
 	{ .compatible = "qcom,geni-se-qup", .data = &qup_desc },
 	{ .compatible = "qcom,geni-se-i2c-master-hub", .data = &i2c_master_hub_desc },
+	{ .compatible = "qcom,sa8255p-geni-se-qup", .data = &sa8255p_qup_desc },
 	{}
 };
 MODULE_DEVICE_TABLE(of, geni_se_dt_match);