[PATCH v10 2/6] mailbox: qcom: Create APCS child device for clock controller

[Georgi Djakov]

There is a clock controller functionality provided by the APCS hardware
block of msm8916 devices. The device-tree would represent an APCS node
with both mailbox and clock provider properties.
Create a platform child device for the clock controller functionality so
the driver can probe and use APCS as parent.

Signed-off-by: Georgi Djakov <georgi.dja...@linaro.org>
---
 drivers/mailbox/qcom-apcs-ipc-mailbox.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/drivers/mailbox/qcom-apcs-ipc-mailbox.c 
b/drivers/mailbox/qcom-apcs-ipc-mailbox.c
index ab344bc6fa63..57bde0dfd12f 100644
--- a/drivers/mailbox/qcom-apcs-ipc-mailbox.c
+++ b/drivers/mailbox/qcom-apcs-ipc-mailbox.c
@@ -29,6 +29,7 @@ struct qcom_apcs_ipc {
 
        struct regmap *regmap;
        unsigned long offset;
+       struct platform_device *clk;
 };
 
 static const struct regmap_config apcs_regmap_config = {
@@ -96,6 +97,14 @@ static int qcom_apcs_ipc_probe(struct platform_device *pdev)
                return ret;
        }
 
+       if (of_device_is_compatible(np, "qcom,msm8916-apcs-kpss-global")) {
+               apcs->clk = platform_device_register_data(&pdev->dev,
+                                                         
"qcom-apcs-msm8916-clk",
+                                                         -1, NULL, 0);
+               if (IS_ERR(apcs->clk))
+                       dev_err(&pdev->dev, "failed to register APCS clk\n");
+       }
+
        platform_set_drvdata(pdev, apcs);
 
        return 0;
@@ -104,8 +113,10 @@ static int qcom_apcs_ipc_probe(struct platform_device 
*pdev)
 static int qcom_apcs_ipc_remove(struct platform_device *pdev)
 {
        struct qcom_apcs_ipc *apcs = platform_get_drvdata(pdev);
+       struct platform_device *clk = apcs->clk;
 
        mbox_controller_unregister(&apcs->mbox);
+       platform_device_unregister(clk);
 
        return 0;
 }