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Subject[PATCH v1 4/4] phy: qcom-qmp: Expose provided clocks to DT
Date
Register a simple clock provider for the PHY pipe clock sources so that
device tree users can point at these clocks via phandles to the lane
nodes.

Signed-off-by: Evan Green <evgreen@chromium.org>
---

drivers/phy/qualcomm/phy-qcom-qmp.c | 23 ++++++++++++++++++++++-
1 file changed, 22 insertions(+), 1 deletion(-)

diff --git a/drivers/phy/qualcomm/phy-qcom-qmp.c b/drivers/phy/qualcomm/phy-qcom-qmp.c
index 8204d55e2d650..b4006818e1b65 100644
--- a/drivers/phy/qualcomm/phy-qcom-qmp.c
+++ b/drivers/phy/qualcomm/phy-qcom-qmp.c
@@ -1542,6 +1542,11 @@ static int qcom_qmp_phy_clk_init(struct device *dev)
return devm_clk_bulk_get(dev, num, qmp->clks);
}

+static void phy_pipe_clk_release_provider(void *res)
+{
+ of_clk_del_provider(res);
+}
+
/*
* Register a fixed rate pipe clock.
*
@@ -1588,7 +1593,23 @@ static int phy_pipe_clk_register(struct qcom_qmp *qmp, struct device_node *np)
fixed->fixed_rate = 125000000;
fixed->hw.init = &init;

- return devm_clk_hw_register(qmp->dev, &fixed->hw);
+ ret = devm_clk_hw_register(qmp->dev, &fixed->hw);
+ if (ret)
+ return ret;
+
+ ret = of_clk_add_hw_provider(np, of_clk_hw_simple_get, &fixed->hw);
+ if (ret)
+ return ret;
+
+ /*
+ * Roll a devm action because the clock provider is the child node, but
+ * the child node is not actually a device.
+ */
+ ret = devm_add_action(qmp->dev, phy_pipe_clk_release_provider, np);
+ if (ret)
+ phy_pipe_clk_release_provider(np);
+
+ return ret;
}

static const struct phy_ops qcom_qmp_phy_gen_ops = {
--
2.18.1
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