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-rw-r--r--drivers/clk/meson/meson-eeclk.c62
1 files changed, 62 insertions, 0 deletions
diff --git a/drivers/clk/meson/meson-eeclk.c b/drivers/clk/meson/meson-eeclk.c
new file mode 100644
index 000000000..0e5e6b57e
--- /dev/null
+++ b/drivers/clk/meson/meson-eeclk.c
@@ -0,0 +1,62 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2019 BayLibre, SAS.
+ * Author: Jerome Brunet <jbrunet@baylibre.com>
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+#include <linux/mfd/syscon.h>
+#include <linux/regmap.h>
+#include <linux/module.h>
+
+#include "clk-regmap.h"
+#include "meson-eeclk.h"
+
+int meson_eeclkc_probe(struct platform_device *pdev)
+{
+ const struct meson_eeclkc_data *data;
+ struct device *dev = &pdev->dev;
+ struct device_node *np;
+ struct regmap *map;
+ int ret, i;
+
+ data = of_device_get_match_data(dev);
+ if (!data)
+ return -EINVAL;
+
+ /* Get the hhi system controller node */
+ np = of_get_parent(dev->of_node);
+ map = syscon_node_to_regmap(np);
+ of_node_put(np);
+ if (IS_ERR(map)) {
+ dev_err(dev,
+ "failed to get HHI regmap\n");
+ return PTR_ERR(map);
+ }
+
+ if (data->init_count)
+ regmap_multi_reg_write(map, data->init_regs, data->init_count);
+
+ /* Populate regmap for the regmap backed clocks */
+ for (i = 0; i < data->regmap_clk_num; i++)
+ data->regmap_clks[i]->map = map;
+
+ for (i = 0; i < data->hw_onecell_data->num; i++) {
+ /* array might be sparse */
+ if (!data->hw_onecell_data->hws[i])
+ continue;
+
+ ret = devm_clk_hw_register(dev, data->hw_onecell_data->hws[i]);
+ if (ret) {
+ dev_err(dev, "Clock registration failed\n");
+ return ret;
+ }
+ }
+
+ return devm_of_clk_add_hw_provider(dev, of_clk_hw_onecell_get,
+ data->hw_onecell_data);
+}
+EXPORT_SYMBOL_GPL(meson_eeclkc_probe);
+MODULE_LICENSE("GPL v2");