This hardware block provides more functionalities that just IPC. Convert
it to regmap to allow other child platform devices to use the same regmap.
Signed-off-by: Georgi Djakov <georgi.djakov@xxxxxxxxxx>
Acked-by: Bjorn Andersson <bjorn.andersson@xxxxxxxxxx>
---
drivers/mailbox/qcom-apcs-ipc-mailbox.c | 24 +++++++++++++++++++-----
1 file changed, 19 insertions(+), 5 deletions(-)
diff --git a/drivers/mailbox/qcom-apcs-ipc-mailbox.c b/drivers/mailbox/qcom-apcs-ipc-mailbox.c
index 9924c6d7f05d..ab344bc6fa63 100644
--- a/drivers/mailbox/qcom-apcs-ipc-mailbox.c
+++ b/drivers/mailbox/qcom-apcs-ipc-mailbox.c
@@ -18,6 +18,7 @@
#include <linux/of.h>
#include <linux/of_platform.h>
#include <linux/platform_device.h>
+#include <linux/regmap.h>
#include <linux/mailbox_controller.h>
#define QCOM_APCS_IPC_BITS 32
@@ -26,19 +27,25 @@ struct qcom_apcs_ipc {
struct mbox_controller mbox;
struct mbox_chan mbox_chans[QCOM_APCS_IPC_BITS];
- void __iomem *reg;
+ struct regmap *regmap;
unsigned long offset;
};
+static const struct regmap_config apcs_regmap_config = {
+ .reg_bits = 32,
+ .reg_stride = 4,
+ .val_bits = 32,
+ .max_register = 0x1000,
+ .fast_io = true,
+};
+
static int qcom_apcs_ipc_send_data(struct mbox_chan *chan, void *data)
{
struct qcom_apcs_ipc *apcs = container_of(chan->mbox,
struct qcom_apcs_ipc, mbox);
unsigned long idx = (unsigned long)chan->con_priv;
- writel(BIT(idx), apcs->reg);
-
- return 0;
+ return regmap_write(apcs->regmap, apcs->offset, BIT(idx));
}
static const struct mbox_chan_ops qcom_apcs_ipc_ops = {
@@ -47,7 +54,9 @@ static const struct mbox_chan_ops qcom_apcs_ipc_ops = {
static int qcom_apcs_ipc_probe(struct platform_device *pdev)
{
+ struct device_node *np = pdev->dev.of_node;
struct qcom_apcs_ipc *apcs;
+ struct regmap *regmap;
struct resource *res;
unsigned long offset;
void __iomem *base;
@@ -63,9 +72,14 @@ static int qcom_apcs_ipc_probe(struct platform_device *pdev)
if (IS_ERR(base))
return PTR_ERR(base);
+ regmap = devm_regmap_init_mmio(&pdev->dev, base, &apcs_regmap_config);
+ if (IS_ERR(regmap))
+ return PTR_ERR(regmap);
+
offset = (unsigned long)of_device_get_match_data(&pdev->dev);
- apcs->reg = base + offset;
+ apcs->regmap = regmap;
+ apcs->offset = offset;
/* Initialize channel identifiers */
for (i = 0; i < ARRAY_SIZE(apcs->mbox_chans); i++)
--
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