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1// SPDX-License-Identifier: GPL-2.0-only2/*3 * Copyright (c) 2022 Collabora Ltd.4 * Author: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>5 */6 7#include <dt-bindings/clock/mediatek,mt6795-clk.h>8#include <dt-bindings/reset/mediatek,mt6795-resets.h>9#include <linux/module.h>10#include <linux/platform_device.h>11#include "clk-gate.h"12#include "clk-mtk.h"13#include "reset.h"14 15#define GATE_PERI(_id, _name, _parent, _shift)			\16		GATE_MTK(_id, _name, _parent, &peri_cg_regs,	\17			 _shift, &mtk_clk_gate_ops_setclr)18 19static DEFINE_SPINLOCK(mt6795_peri_clk_lock);20 21static const struct mtk_gate_regs peri_cg_regs = {22	.set_ofs = 0x0008,23	.clr_ofs = 0x0010,24	.sta_ofs = 0x0018,25};26 27static const char * const uart_ck_sel_parents[] = {28	"clk26m",29	"uart_sel",30};31 32static const struct mtk_composite peri_clks[] = {33	MUX(CLK_PERI_UART0_SEL, "uart0_ck_sel", uart_ck_sel_parents, 0x40c, 0, 1),34	MUX(CLK_PERI_UART1_SEL, "uart1_ck_sel", uart_ck_sel_parents, 0x40c, 1, 1),35	MUX(CLK_PERI_UART2_SEL, "uart2_ck_sel", uart_ck_sel_parents, 0x40c, 2, 1),36	MUX(CLK_PERI_UART3_SEL, "uart3_ck_sel", uart_ck_sel_parents, 0x40c, 3, 1),37};38 39static const struct mtk_gate peri_gates[] = {40	GATE_PERI(CLK_PERI_NFI, "peri_nfi", "axi_sel", 0),41	GATE_PERI(CLK_PERI_THERM, "peri_therm", "axi_sel", 1),42	GATE_PERI(CLK_PERI_PWM1, "peri_pwm1", "axi_sel", 2),43	GATE_PERI(CLK_PERI_PWM2, "peri_pwm2", "axi_sel", 3),44	GATE_PERI(CLK_PERI_PWM3, "peri_pwm3", "axi_sel", 4),45	GATE_PERI(CLK_PERI_PWM4, "peri_pwm4", "axi_sel", 5),46	GATE_PERI(CLK_PERI_PWM5, "peri_pwm5", "axi_sel", 6),47	GATE_PERI(CLK_PERI_PWM6, "peri_pwm6", "axi_sel", 7),48	GATE_PERI(CLK_PERI_PWM7, "peri_pwm7", "axi_sel", 8),49	GATE_PERI(CLK_PERI_PWM, "peri_pwm", "axi_sel", 9),50	GATE_PERI(CLK_PERI_USB0, "peri_usb0", "usb30_sel", 10),51	GATE_PERI(CLK_PERI_USB1, "peri_usb1", "usb20_sel", 11),52	GATE_PERI(CLK_PERI_AP_DMA, "peri_ap_dma", "axi_sel", 12),53	GATE_PERI(CLK_PERI_MSDC30_0, "peri_msdc30_0", "msdc50_0_sel", 13),54	GATE_PERI(CLK_PERI_MSDC30_1, "peri_msdc30_1", "msdc30_1_sel", 14),55	GATE_PERI(CLK_PERI_MSDC30_2, "peri_msdc30_2", "msdc30_2_sel", 15),56	GATE_PERI(CLK_PERI_MSDC30_3, "peri_msdc30_3", "msdc30_3_sel", 16),57	GATE_PERI(CLK_PERI_NLI_ARB, "peri_nli_arb", "axi_sel", 17),58	GATE_PERI(CLK_PERI_IRDA, "peri_irda", "irda_sel", 18),59	GATE_PERI(CLK_PERI_UART0, "peri_uart0", "axi_sel", 19),60	GATE_PERI(CLK_PERI_UART1, "peri_uart1", "axi_sel", 20),61	GATE_PERI(CLK_PERI_UART2, "peri_uart2", "axi_sel", 21),62	GATE_PERI(CLK_PERI_UART3, "peri_uart3", "axi_sel", 22),63	GATE_PERI(CLK_PERI_I2C0, "peri_i2c0", "axi_sel", 23),64	GATE_PERI(CLK_PERI_I2C1, "peri_i2c1", "axi_sel", 24),65	GATE_PERI(CLK_PERI_I2C2, "peri_i2c2", "axi_sel", 25),66	GATE_PERI(CLK_PERI_I2C3, "peri_i2c3", "axi_sel", 26),67	GATE_PERI(CLK_PERI_I2C4, "peri_i2c4", "axi_sel", 27),68	GATE_PERI(CLK_PERI_AUXADC, "peri_auxadc", "clk26m", 28),69	GATE_PERI(CLK_PERI_SPI0, "peri_spi0", "spi_sel", 29),70};71 72static u16 peri_rst_ofs[] = { 0x0 };73 74static u16 peri_idx_map[] = {75	[MT6795_PERI_NFI_SW_RST]   = 14,76	[MT6795_PERI_THERM_SW_RST] = 16,77	[MT6795_PERI_MSDC1_SW_RST] = 20,78};79 80static const struct mtk_clk_rst_desc clk_rst_desc = {81	.version = MTK_RST_SIMPLE,82	.rst_bank_ofs = peri_rst_ofs,83	.rst_bank_nr = ARRAY_SIZE(peri_rst_ofs),84	.rst_idx_map = peri_idx_map,85	.rst_idx_map_nr = ARRAY_SIZE(peri_idx_map),86};87 88static const struct of_device_id of_match_clk_mt6795_pericfg[] = {89	{ .compatible = "mediatek,mt6795-pericfg" },90	{ /* sentinel */ }91};92MODULE_DEVICE_TABLE(of, of_match_clk_mt6795_pericfg);93 94static int clk_mt6795_pericfg_probe(struct platform_device *pdev)95{96	struct clk_hw_onecell_data *clk_data;97	struct device_node *node = pdev->dev.of_node;98	void __iomem *base;99	int ret;100 101	base = devm_platform_ioremap_resource(pdev, 0);102	if (IS_ERR(base))103		return PTR_ERR(base);104 105	clk_data = mtk_alloc_clk_data(CLK_PERI_NR_CLK);106	if (!clk_data)107		return -ENOMEM;108 109	ret = mtk_register_reset_controller_with_dev(&pdev->dev, &clk_rst_desc);110	if (ret)111		goto free_clk_data;112 113	ret = mtk_clk_register_gates(&pdev->dev, node, peri_gates,114				     ARRAY_SIZE(peri_gates), clk_data);115	if (ret)116		goto free_clk_data;117 118	ret = mtk_clk_register_composites(&pdev->dev, peri_clks,119					  ARRAY_SIZE(peri_clks), base,120					  &mt6795_peri_clk_lock, clk_data);121	if (ret)122		goto unregister_gates;123 124	ret = of_clk_add_hw_provider(node, of_clk_hw_onecell_get, clk_data);125	if (ret)126		goto unregister_composites;127 128	return 0;129 130unregister_composites:131	mtk_clk_unregister_composites(peri_clks, ARRAY_SIZE(peri_clks), clk_data);132unregister_gates:133	mtk_clk_unregister_gates(peri_gates, ARRAY_SIZE(peri_gates), clk_data);134free_clk_data:135	mtk_free_clk_data(clk_data);136	return ret;137}138 139static void clk_mt6795_pericfg_remove(struct platform_device *pdev)140{141	struct device_node *node = pdev->dev.of_node;142	struct clk_hw_onecell_data *clk_data = platform_get_drvdata(pdev);143 144	of_clk_del_provider(node);145	mtk_clk_unregister_composites(peri_clks, ARRAY_SIZE(peri_clks), clk_data);146	mtk_clk_unregister_gates(peri_gates, ARRAY_SIZE(peri_gates), clk_data);147	mtk_free_clk_data(clk_data);148}149 150static struct platform_driver clk_mt6795_pericfg_drv = {151	.driver = {152		.name = "clk-mt6795-pericfg",153		.of_match_table = of_match_clk_mt6795_pericfg,154	},155	.probe = clk_mt6795_pericfg_probe,156	.remove = clk_mt6795_pericfg_remove,157};158module_platform_driver(clk_mt6795_pericfg_drv);159 160MODULE_DESCRIPTION("MediaTek MT6795 pericfg clocks driver");161MODULE_LICENSE("GPL");162