linux-kernel - [PATCH 21/89] clk: bcm: rpi: Add DT provider for the clocks

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Message-Id: <f38e173f73f9c9c06291d96d095f5a42002720c9.1582533919.git-series.maxime@cerno.tech>
Date:   Mon, 24 Feb 2020 10:06:23 +0100
From:   Maxime Ripard <maxime@...no.tech>
To:     Nicolas Saenz Julienne <nsaenzjulienne@...e.de>,
        Eric Anholt <eric@...olt.net>
Cc:     dri-devel@...ts.freedesktop.org,
        linux-rpi-kernel@...ts.infradead.org,
        bcm-kernel-feedback-list@...adcom.com,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Dave Stevenson <dave.stevenson@...pberrypi.com>,
        Tim Gover <tim.gover@...pberrypi.com>,
        Phil Elwell <phil@...pberrypi.com>,
        Maxime Ripard <maxime@...no.tech>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>, linux-clk@...r.kernel.org
Subject: [PATCH 21/89] clk: bcm: rpi: Add DT provider for the clocks

For the upcoming registration of the clocks provided by the firmware, make
sure it's exposed to the device tree providers.

Cc: Michael Turquette <mturquette@...libre.com>
Cc: Stephen Boyd <sboyd@...nel.org>
Cc: linux-clk@...r.kernel.org
Signed-off-by: Maxime Ripard <maxime@...no.tech>
---
 drivers/clk/bcm/clk-raspberrypi.c | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/drivers/clk/bcm/clk-raspberrypi.c b/drivers/clk/bcm/clk-raspberrypi.c
index db5de9073930..3f21888a3e3e 100644
--- a/drivers/clk/bcm/clk-raspberrypi.c
+++ b/drivers/clk/bcm/clk-raspberrypi.c
@@ -31,6 +31,8 @@
 
 #define A2W_PLL_FRAC_BITS		20
 
+#define NUM_FW_CLKS			16
+
 struct raspberrypi_clk {
 	struct device *dev;
 	struct rpi_firmware *firmware;
@@ -285,6 +287,7 @@ static struct clk_hw *raspberrypi_register_pllb_arm(struct raspberrypi_clk *rpi)
 
 static int raspberrypi_clk_probe(struct platform_device *pdev)
 {
+	struct clk_hw_onecell_data *clk_data;
 	struct device_node *firmware_node;
 	struct device *dev = &pdev->dev;
 	struct rpi_firmware *firmware;
@@ -309,6 +312,11 @@ static int raspberrypi_clk_probe(struct platform_device *pdev)
 	rpi->firmware = firmware;
 	platform_set_drvdata(pdev, rpi);
 
+	clk_data = devm_kzalloc(dev, struct_size(clk_data, hws, NUM_FW_CLKS),
+				GFP_KERNEL);
+	if (!clk_data)
+		return -ENOMEM;
+
 	hw = raspberrypi_register_pllb(rpi);
 	if (IS_ERR(hw)) {
 		dev_err(dev, "Failed to initialize pllb, %ld\n", PTR_ERR(hw));
@@ -318,6 +326,13 @@ static int raspberrypi_clk_probe(struct platform_device *pdev)
 	hw = raspberrypi_register_pllb_arm(rpi);
 	if (IS_ERR(hw))
 		return PTR_ERR(hw);
+	clk_data->hws[RPI_FIRMWARE_ARM_CLK_ID] = hw;
+	clk_data->num = RPI_FIRMWARE_ARM_CLK_ID + 1;
+
+	ret = devm_of_clk_add_hw_provider(dev, of_clk_hw_onecell_get,
+					  clk_data);
+	if (ret)
+		return ret;
 
 	rpi->cpufreq = platform_device_register_data(dev, "raspberrypi-cpufreq",
 						     -1, NULL, 0);
-- 
git-series 0.9.1