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// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (c) 2017 MediaTek Inc.
* Copyright (c) 2023 Collabora, Ltd.
* AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
*/
#include <dt-bindings/clock/mt7622-clk.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include "clk-cpumux.h"
#include "clk-gate.h"
#include "clk-mtk.h"
#include "reset.h"
#define GATE_INFRA(_id, _name, _parent, _shift) \
GATE_MTK(_id, _name, _parent, &infra_cg_regs, _shift, &mtk_clk_gate_ops_setclr)
static const struct mtk_gate_regs infra_cg_regs = {
.set_ofs = 0x40,
.clr_ofs = 0x44,
.sta_ofs = 0x48,
};
static const char * const infra_mux1_parents[] = {
"clkxtal",
"armpll",
"main_core_en",
"armpll"
};
static const struct mtk_composite cpu_muxes[] = {
MUX(CLK_INFRA_MUX1_SEL, "infra_mux1_sel", infra_mux1_parents, 0x000, 2, 2),
};
static const struct mtk_gate infra_clks[] = {
GATE_INFRA(CLK_INFRA_DBGCLK_PD, "infra_dbgclk_pd", "axi_sel", 0),
GATE_INFRA(CLK_INFRA_TRNG, "trng_ck", "axi_sel", 2),
GATE_INFRA(CLK_INFRA_AUDIO_PD, "infra_audio_pd", "aud_intbus_sel", 5),
GATE_INFRA(CLK_INFRA_IRRX_PD, "infra_irrx_pd", "irrx_sel", 16),
GATE_INFRA(CLK_INFRA_APXGPT_PD, "infra_apxgpt_pd", "f10m_ref_sel", 18),
GATE_INFRA(CLK_INFRA_PMIC_PD, "infra_pmic_pd", "pmicspi_sel", 22),
};
static u16 infrasys_rst_ofs[] = { 0x30 };
static const struct mtk_clk_rst_desc clk_rst_desc = {
.version = MTK_RST_SIMPLE,
.rst_bank_ofs = infrasys_rst_ofs,
.rst_bank_nr = ARRAY_SIZE(infrasys_rst_ofs),
};
static const struct of_device_id of_match_clk_mt7622_infracfg[] = {
{ .compatible = "mediatek,mt7622-infracfg" },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, of_match_clk_mt7622_infracfg);
static int clk_mt7622_infracfg_probe(struct platform_device *pdev)
{
struct clk_hw_onecell_data *clk_data;
struct device_node *node = pdev->dev.of_node;
void __iomem *base;
int ret;
base = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(base))
return PTR_ERR(base);
clk_data = mtk_alloc_clk_data(CLK_INFRA_NR_CLK);
if (!clk_data)
return -ENOMEM;
ret = mtk_register_reset_controller_with_dev(&pdev->dev, &clk_rst_desc);
if (ret)
goto free_clk_data;
ret = mtk_clk_register_gates(&pdev->dev, node, infra_clks,
ARRAY_SIZE(infra_clks), clk_data);
if (ret)
goto free_clk_data;
ret = mtk_clk_register_cpumuxes(&pdev->dev, node, cpu_muxes,
ARRAY_SIZE(cpu_muxes), clk_data);
if (ret)
goto unregister_gates;
ret = of_clk_add_hw_provider(node, of_clk_hw_onecell_get, clk_data);
if (ret)
goto unregister_cpumuxes;
return 0;
unregister_cpumuxes:
mtk_clk_unregister_cpumuxes(cpu_muxes, ARRAY_SIZE(cpu_muxes), clk_data);
unregister_gates:
mtk_clk_unregister_gates(infra_clks, ARRAY_SIZE(infra_clks), clk_data);
free_clk_data:
mtk_free_clk_data(clk_data);
return ret;
}
static int clk_mt7622_infracfg_remove(struct platform_device *pdev)
{
struct device_node *node = pdev->dev.of_node;
struct clk_hw_onecell_data *clk_data = platform_get_drvdata(pdev);
of_clk_del_provider(node);
mtk_clk_unregister_cpumuxes(cpu_muxes, ARRAY_SIZE(cpu_muxes), clk_data);
mtk_clk_unregister_gates(infra_clks, ARRAY_SIZE(infra_clks), clk_data);
mtk_free_clk_data(clk_data);
return 0;
}
static struct platform_driver clk_mt7622_infracfg_drv = {
.driver = {
.name = "clk-mt7622-infracfg",
.of_match_table = of_match_clk_mt7622_infracfg,
},
.probe = clk_mt7622_infracfg_probe,
.remove = clk_mt7622_infracfg_remove,
};
module_platform_driver(clk_mt7622_infracfg_drv);
MODULE_DESCRIPTION("MediaTek MT7622 infracfg clocks driver");
MODULE_LICENSE("GPL");
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