diff options
Diffstat (limited to 'drivers/clk/mediatek/clk-mt7622-infracfg.c')
| -rw-r--r-- | drivers/clk/mediatek/clk-mt7622-infracfg.c | 126 |
1 files changed, 126 insertions, 0 deletions
diff --git a/drivers/clk/mediatek/clk-mt7622-infracfg.c b/drivers/clk/mediatek/clk-mt7622-infracfg.c new file mode 100644 index 0000000000..6bc911cb29 --- /dev/null +++ b/drivers/clk/mediatek/clk-mt7622-infracfg.c @@ -0,0 +1,126 @@ +// 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 void 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); +} + +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_new = clk_mt7622_infracfg_remove, +}; +module_platform_driver(clk_mt7622_infracfg_drv); + +MODULE_DESCRIPTION("MediaTek MT7622 infracfg clocks driver"); +MODULE_LICENSE("GPL"); |