linux-kernel - [PATCH 3/4] clk: bcm2835: register Raspberry Pi's firmware clk device

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Date:   Tue,  4 Jun 2019 19:32:23 +0200
From:   Nicolas Saenz Julienne <nsaenzjulienne@...e.de>
To:     stefan.wahren@...e.com, Florian Fainelli <f.fainelli@...il.com>,
        Ray Jui <rjui@...adcom.com>,
        Scott Branden <sbranden@...adcom.com>,
        bcm-kernel-feedback-list@...adcom.com,
        Eric Anholt <eric@...olt.net>
Cc:     mbrugger@...e.de, viresh.kumar@...aro.org, rjw@...ysocki.net,
        sboyd@...nel.org, ptesarik@...e.com,
        linux-rpi-kernel@...ts.infradead.org, ssuloev@...altech.com,
        linux-clk@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        mturquette@...libre.com, linux-pm@...r.kernel.org,
        Nicolas Saenz Julienne <nsaenzjulienne@...e.de>,
        linux-kernel@...r.kernel.org
Subject: [PATCH 3/4] clk: bcm2835: register Raspberry Pi's firmware clk device

Registers clk-raspberrypi as a platform device as part of the driver's
probe sequence.

Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@...e.de>
---
 drivers/clk/bcm/clk-bcm2835.c | 15 +++++++++++++--
 1 file changed, 13 insertions(+), 2 deletions(-)

diff --git a/drivers/clk/bcm/clk-bcm2835.c b/drivers/clk/bcm/clk-bcm2835.c
index ccb0319fc2e9..6f370e6bafed 100644
--- a/drivers/clk/bcm/clk-bcm2835.c
+++ b/drivers/clk/bcm/clk-bcm2835.c
@@ -2098,6 +2098,7 @@ static int bcm2835_mark_sdc_parent_critical(struct clk *sdc)
 
 static int bcm2835_clk_probe(struct platform_device *pdev)
 {
+	struct platform_device *rpi_fw_clk;
 	struct device *dev = &pdev->dev;
 	struct clk_hw **hws;
 	struct bcm2835_cprman *cprman;
@@ -2150,8 +2151,18 @@ static int bcm2835_clk_probe(struct platform_device *pdev)
 	if (ret)
 		return ret;
 
-	return of_clk_add_hw_provider(dev->of_node, of_clk_hw_onecell_get,
-				      &cprman->onecell);
+	ret = of_clk_add_hw_provider(dev->of_node, of_clk_hw_onecell_get,
+				     &cprman->onecell);
+	if (ret)
+		return ret;
+
+	rpi_fw_clk = platform_device_register_data(NULL, "raspberrypi-clk", -1,
+						   NULL, 0);
+	ret = PTR_ERR_OR_ZERO(rpi_fw_clk);
+	if (ret)
+		dev_err(dev, "Failed to create platform device, %d\n", ret);
+
+	return ret;
 }
 
 static const struct of_device_id bcm2835_clk_of_match[] = {
-- 
2.21.0