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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
commit | 2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch) | |
tree | 848558de17fb3008cdf4d861b01ac7781903ce39 /drivers/clk/hisilicon/clk.c | |
parent | Initial commit. (diff) | |
download | linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip |
Adding upstream version 6.1.76.upstream/6.1.76upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | drivers/clk/hisilicon/clk.c | 343 |
1 files changed, 343 insertions, 0 deletions
diff --git a/drivers/clk/hisilicon/clk.c b/drivers/clk/hisilicon/clk.c new file mode 100644 index 000000000..54d9fdc93 --- /dev/null +++ b/drivers/clk/hisilicon/clk.c @@ -0,0 +1,343 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Hisilicon clock driver + * + * Copyright (c) 2012-2013 Hisilicon Limited. + * Copyright (c) 2012-2013 Linaro Limited. + * + * Author: Haojian Zhuang <haojian.zhuang@linaro.org> + * Xin Li <li.xin@linaro.org> + */ + +#include <linux/kernel.h> +#include <linux/clkdev.h> +#include <linux/clk-provider.h> +#include <linux/delay.h> +#include <linux/io.h> +#include <linux/of.h> +#include <linux/of_address.h> +#include <linux/of_device.h> +#include <linux/slab.h> + +#include "clk.h" + +static DEFINE_SPINLOCK(hisi_clk_lock); + +struct hisi_clock_data *hisi_clk_alloc(struct platform_device *pdev, + int nr_clks) +{ + struct hisi_clock_data *clk_data; + struct resource *res; + struct clk **clk_table; + + clk_data = devm_kmalloc(&pdev->dev, sizeof(*clk_data), GFP_KERNEL); + if (!clk_data) + return NULL; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!res) + return NULL; + clk_data->base = devm_ioremap(&pdev->dev, + res->start, resource_size(res)); + if (!clk_data->base) + return NULL; + + clk_table = devm_kmalloc_array(&pdev->dev, nr_clks, + sizeof(*clk_table), + GFP_KERNEL); + if (!clk_table) + return NULL; + + clk_data->clk_data.clks = clk_table; + clk_data->clk_data.clk_num = nr_clks; + + return clk_data; +} +EXPORT_SYMBOL_GPL(hisi_clk_alloc); + +struct hisi_clock_data *hisi_clk_init(struct device_node *np, + int nr_clks) +{ + struct hisi_clock_data *clk_data; + struct clk **clk_table; + void __iomem *base; + + base = of_iomap(np, 0); + if (!base) { + pr_err("%s: failed to map clock registers\n", __func__); + goto err; + } + + clk_data = kzalloc(sizeof(*clk_data), GFP_KERNEL); + if (!clk_data) + goto err; + + clk_data->base = base; + clk_table = kcalloc(nr_clks, sizeof(*clk_table), GFP_KERNEL); + if (!clk_table) + goto err_data; + + clk_data->clk_data.clks = clk_table; + clk_data->clk_data.clk_num = nr_clks; + of_clk_add_provider(np, of_clk_src_onecell_get, &clk_data->clk_data); + return clk_data; +err_data: + kfree(clk_data); +err: + return NULL; +} +EXPORT_SYMBOL_GPL(hisi_clk_init); + +int hisi_clk_register_fixed_rate(const struct hisi_fixed_rate_clock *clks, + int nums, struct hisi_clock_data *data) +{ + struct clk *clk; + int i; + + for (i = 0; i < nums; i++) { + clk = clk_register_fixed_rate(NULL, clks[i].name, + clks[i].parent_name, + clks[i].flags, + clks[i].fixed_rate); + if (IS_ERR(clk)) { + pr_err("%s: failed to register clock %s\n", + __func__, clks[i].name); + goto err; + } + data->clk_data.clks[clks[i].id] = clk; + } + + return 0; + +err: + while (i--) + clk_unregister_fixed_rate(data->clk_data.clks[clks[i].id]); + + return PTR_ERR(clk); +} +EXPORT_SYMBOL_GPL(hisi_clk_register_fixed_rate); + +int hisi_clk_register_fixed_factor(const struct hisi_fixed_factor_clock *clks, + int nums, + struct hisi_clock_data *data) +{ + struct clk *clk; + int i; + + for (i = 0; i < nums; i++) { + clk = clk_register_fixed_factor(NULL, clks[i].name, + clks[i].parent_name, + clks[i].flags, clks[i].mult, + clks[i].div); + if (IS_ERR(clk)) { + pr_err("%s: failed to register clock %s\n", + __func__, clks[i].name); + goto err; + } + data->clk_data.clks[clks[i].id] = clk; + } + + return 0; + +err: + while (i--) + clk_unregister_fixed_factor(data->clk_data.clks[clks[i].id]); + + return PTR_ERR(clk); +} +EXPORT_SYMBOL_GPL(hisi_clk_register_fixed_factor); + +int hisi_clk_register_mux(const struct hisi_mux_clock *clks, + int nums, struct hisi_clock_data *data) +{ + struct clk *clk; + void __iomem *base = data->base; + int i; + + for (i = 0; i < nums; i++) { + u32 mask = BIT(clks[i].width) - 1; + + clk = clk_register_mux_table(NULL, clks[i].name, + clks[i].parent_names, + clks[i].num_parents, clks[i].flags, + base + clks[i].offset, clks[i].shift, + mask, clks[i].mux_flags, + clks[i].table, &hisi_clk_lock); + if (IS_ERR(clk)) { + pr_err("%s: failed to register clock %s\n", + __func__, clks[i].name); + goto err; + } + + if (clks[i].alias) + clk_register_clkdev(clk, clks[i].alias, NULL); + + data->clk_data.clks[clks[i].id] = clk; + } + + return 0; + +err: + while (i--) + clk_unregister_mux(data->clk_data.clks[clks[i].id]); + + return PTR_ERR(clk); +} +EXPORT_SYMBOL_GPL(hisi_clk_register_mux); + +int hisi_clk_register_phase(struct device *dev, + const struct hisi_phase_clock *clks, + int nums, struct hisi_clock_data *data) +{ + void __iomem *base = data->base; + struct clk *clk; + int i; + + for (i = 0; i < nums; i++) { + clk = clk_register_hisi_phase(dev, &clks[i], base, + &hisi_clk_lock); + if (IS_ERR(clk)) { + pr_err("%s: failed to register clock %s\n", __func__, + clks[i].name); + return PTR_ERR(clk); + } + + data->clk_data.clks[clks[i].id] = clk; + } + + return 0; +} +EXPORT_SYMBOL_GPL(hisi_clk_register_phase); + +int hisi_clk_register_divider(const struct hisi_divider_clock *clks, + int nums, struct hisi_clock_data *data) +{ + struct clk *clk; + void __iomem *base = data->base; + int i; + + for (i = 0; i < nums; i++) { + clk = clk_register_divider_table(NULL, clks[i].name, + clks[i].parent_name, + clks[i].flags, + base + clks[i].offset, + clks[i].shift, clks[i].width, + clks[i].div_flags, + clks[i].table, + &hisi_clk_lock); + if (IS_ERR(clk)) { + pr_err("%s: failed to register clock %s\n", + __func__, clks[i].name); + goto err; + } + + if (clks[i].alias) + clk_register_clkdev(clk, clks[i].alias, NULL); + + data->clk_data.clks[clks[i].id] = clk; + } + + return 0; + +err: + while (i--) + clk_unregister_divider(data->clk_data.clks[clks[i].id]); + + return PTR_ERR(clk); +} +EXPORT_SYMBOL_GPL(hisi_clk_register_divider); + +int hisi_clk_register_gate(const struct hisi_gate_clock *clks, + int nums, struct hisi_clock_data *data) +{ + struct clk *clk; + void __iomem *base = data->base; + int i; + + for (i = 0; i < nums; i++) { + clk = clk_register_gate(NULL, clks[i].name, + clks[i].parent_name, + clks[i].flags, + base + clks[i].offset, + clks[i].bit_idx, + clks[i].gate_flags, + &hisi_clk_lock); + if (IS_ERR(clk)) { + pr_err("%s: failed to register clock %s\n", + __func__, clks[i].name); + goto err; + } + + if (clks[i].alias) + clk_register_clkdev(clk, clks[i].alias, NULL); + + data->clk_data.clks[clks[i].id] = clk; + } + + return 0; + +err: + while (i--) + clk_unregister_gate(data->clk_data.clks[clks[i].id]); + + return PTR_ERR(clk); +} +EXPORT_SYMBOL_GPL(hisi_clk_register_gate); + +void hisi_clk_register_gate_sep(const struct hisi_gate_clock *clks, + int nums, struct hisi_clock_data *data) +{ + struct clk *clk; + void __iomem *base = data->base; + int i; + + for (i = 0; i < nums; i++) { + clk = hisi_register_clkgate_sep(NULL, clks[i].name, + clks[i].parent_name, + clks[i].flags, + base + clks[i].offset, + clks[i].bit_idx, + clks[i].gate_flags, + &hisi_clk_lock); + if (IS_ERR(clk)) { + pr_err("%s: failed to register clock %s\n", + __func__, clks[i].name); + continue; + } + + if (clks[i].alias) + clk_register_clkdev(clk, clks[i].alias, NULL); + + data->clk_data.clks[clks[i].id] = clk; + } +} +EXPORT_SYMBOL_GPL(hisi_clk_register_gate_sep); + +void __init hi6220_clk_register_divider(const struct hi6220_divider_clock *clks, + int nums, struct hisi_clock_data *data) +{ + struct clk *clk; + void __iomem *base = data->base; + int i; + + for (i = 0; i < nums; i++) { + clk = hi6220_register_clkdiv(NULL, clks[i].name, + clks[i].parent_name, + clks[i].flags, + base + clks[i].offset, + clks[i].shift, + clks[i].width, + clks[i].mask_bit, + &hisi_clk_lock); + if (IS_ERR(clk)) { + pr_err("%s: failed to register clock %s\n", + __func__, clks[i].name); + continue; + } + + if (clks[i].alias) + clk_register_clkdev(clk, clks[i].alias, NULL); + + data->clk_data.clks[clks[i].id] = clk; + } +} |