Commit fdd102b5 authored by Douglas Anderson's avatar Douglas Anderson Committed by Andy Gross

drivers: qcom: rpmh-rsc: Check cmd_db_ready() to help children

Children of RPMh will need access to cmd_db.  Rather than having each
child have code to check if cmd_db is ready let's add the check to
RPMh.

With this we'll be able to remove this boilerplate code from
clk-rpmh.c and qcom-rpmh-regulator.c.  Neither of these files has
landed upstream yet but patches are pretty far along.

===
This code is based upon v11 of Lina and Raju's RPMh series.
Suggested-by: default avatarStephen Boyd <sboyd@kernel.org>
Signed-off-by: default avatarDouglas Anderson <dianders@chromium.org>
Acked-by: default avatarLina Iyer <ilina@codeaurora.org>
Signed-off-by: default avatarAndy Gross <andy.gross@linaro.org>
parent 2de4b8d3
...@@ -18,6 +18,7 @@ ...@@ -18,6 +18,7 @@
#include <linux/slab.h> #include <linux/slab.h>
#include <linux/spinlock.h> #include <linux/spinlock.h>
#include <soc/qcom/cmd-db.h>
#include <soc/qcom/tcs.h> #include <soc/qcom/tcs.h>
#include <dt-bindings/soc/qcom,rpmh-rsc.h> #include <dt-bindings/soc/qcom,rpmh-rsc.h>
...@@ -621,6 +622,18 @@ static int rpmh_rsc_probe(struct platform_device *pdev) ...@@ -621,6 +622,18 @@ static int rpmh_rsc_probe(struct platform_device *pdev)
struct rsc_drv *drv; struct rsc_drv *drv;
int ret, irq; int ret, irq;
/*
* Even though RPMh doesn't directly use cmd-db, all of its children
* do. To avoid adding this check to our children we'll do it now.
*/
ret = cmd_db_ready();
if (ret) {
if (ret != -EPROBE_DEFER)
dev_err(&pdev->dev, "Command DB not available (%d)\n",
ret);
return ret;
}
drv = devm_kzalloc(&pdev->dev, sizeof(*drv), GFP_KERNEL); drv = devm_kzalloc(&pdev->dev, sizeof(*drv), GFP_KERNEL);
if (!drv) if (!drv)
return -ENOMEM; return -ENOMEM;
......
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