[PATCH v6 1/4] mailbox: qcom-apcs-ipc: make regmap max_register configurable

[Robert Marko <robimarko@gmail.com>]

APCS register space in IPQ8074 is 0x6000 so regmap max_register needs to
be 0x5ffc.

Instead of making it global, make max_register configurable via match data.

Signed-off-by: Robert Marko <robimarko@gmail.com>
---
 drivers/mailbox/qcom-apcs-ipc-mailbox.c | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/drivers/mailbox/qcom-apcs-ipc-mailbox.c b/drivers/mailbox/qcom-apcs-ipc-mailbox.c
index 80a54d81412e..c05f3276d02c 100644
--- a/drivers/mailbox/qcom-apcs-ipc-mailbox.c
+++ b/drivers/mailbox/qcom-apcs-ipc-mailbox.c
@@ -27,6 +27,7 @@ struct qcom_apcs_ipc {
 struct qcom_apcs_ipc_data {
 	int offset;
 	char *clk_name;
+	unsigned int max_register;
 };
 
 static const struct qcom_apcs_ipc_data ipq6018_apcs_data = {
@@ -53,7 +54,7 @@ static const struct qcom_apcs_ipc_data sdx55_apcs_data = {
 	.offset = 0x1008, .clk_name = "qcom-sdx55-acps-clk"
 };
 
-static const struct regmap_config apcs_regmap_config = {
+static struct regmap_config apcs_regmap_config = {
 	.reg_bits = 32,
 	.reg_stride = 4,
 	.val_bits = 32,
@@ -91,12 +92,17 @@ static int qcom_apcs_ipc_probe(struct platform_device *pdev)
 	if (IS_ERR(base))
 		return PTR_ERR(base);
 
+	apcs_data = of_device_get_match_data(&pdev->dev);
+	if (!apcs_data)
+		return -ENODATA;
+
+	if (apcs_data->max_register)
+		apcs_regmap_config.max_register = apcs_data->max_register;
+
 	regmap = devm_regmap_init_mmio(&pdev->dev, base, &apcs_regmap_config);
 	if (IS_ERR(regmap))
 		return PTR_ERR(regmap);
 
-	apcs_data = of_device_get_match_data(&pdev->dev);
-
 	apcs->regmap = regmap;
 	apcs->offset = apcs_data->offset;
 
-- 
2.36.1