diff options
Diffstat (limited to 'drivers/clk/meson/meson-eeclk.c')
| -rw-r--r-- | drivers/clk/meson/meson-eeclk.c | 62 |
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"); |