diff options
| author | Douglas Anderson <dianders@chromium.org> | 2018-06-18 21:36:52 +0300 |
|---|---|---|
| committer | Andy Gross <andy.gross@linaro.org> | 2018-07-21 21:34:00 +0300 |
| commit | fdd102b52cfd9aa34b078b2b6f1a9aeafef04537 (patch) | |
| tree | 0f1e7f7d73fd0142b343e27fd14ef05abb1ab44d /drivers/soc | |
| parent | 2de4b8d33eab86a6d9653041f8543f6f5f882a25 (diff) | |
| download | linux-fdd102b52cfd9aa34b078b2b6f1a9aeafef04537.tar.xz | |
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: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Acked-by: Lina Iyer <ilina@codeaurora.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
Diffstat (limited to 'drivers/soc')
| -rw-r--r-- | drivers/soc/qcom/rpmh-rsc.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/soc/qcom/rpmh-rsc.c b/drivers/soc/qcom/rpmh-rsc.c index 098feb928576..8e297759c162 100644 --- a/drivers/soc/qcom/rpmh-rsc.c +++ b/drivers/soc/qcom/rpmh-rsc.c @@ -18,6 +18,7 @@ #include <linux/slab.h> #include <linux/spinlock.h> +#include <soc/qcom/cmd-db.h> #include <soc/qcom/tcs.h> #include <dt-bindings/soc/qcom,rpmh-rsc.h> @@ -621,6 +622,18 @@ static int rpmh_rsc_probe(struct platform_device *pdev) struct rsc_drv *drv; 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); if (!drv) return -ENOMEM; |