1 // SPDX-License-Identifier: GPL-2.0
2 /*
3  * Copyright (c) 2020 huangzhenwei@allwinnertech.com
4  * Copyright (C) 2021 Samuel Holland <samuel@sholland.org>
5  */
6 
7 #include <linux/clk-provider.h>
8 #include <linux/module.h>
9 #include <linux/platform_device.h>
10 
11 #include "ccu_common.h"
12 #include "ccu_reset.h"
13 
14 #include "ccu_gate.h"
15 #include "ccu_mp.h"
16 
17 #include "ccu-sun20i-d1-r.h"
18 
19 static const struct clk_parent_data r_ahb_apb0_parents[] = {
20 	{ .fw_name = "hosc" },
21 	{ .fw_name = "losc" },
22 	{ .fw_name = "iosc" },
23 	{ .fw_name = "pll-periph" },
24 };
25 static SUNXI_CCU_MP_DATA_WITH_MUX(r_ahb_clk, "r-ahb",
26 				  r_ahb_apb0_parents, 0x000,
27 				  0, 5,		/* M */
28 				  8, 2,		/* P */
29 				  24, 3,	/* mux */
30 				  0);
31 static const struct clk_hw *r_ahb_hw = &r_ahb_clk.common.hw;
32 
33 static SUNXI_CCU_MP_DATA_WITH_MUX(r_apb0_clk, "r-apb0",
34 				  r_ahb_apb0_parents, 0x00c,
35 				  0, 5,		/* M */
36 				  8, 2,		/* P */
37 				  24, 3,	/* mux */
38 				  0);
39 static const struct clk_hw *r_apb0_hw = &r_apb0_clk.common.hw;
40 
41 static SUNXI_CCU_GATE_HWS(bus_r_timer_clk,	"bus-r-timer",	&r_apb0_hw,
42 			  0x11c, BIT(0), 0);
43 static SUNXI_CCU_GATE_HWS(bus_r_twd_clk,	"bus-r-twd",	&r_apb0_hw,
44 			  0x12c, BIT(0), 0);
45 static SUNXI_CCU_GATE_HWS(bus_r_ppu_clk,	"bus-r-ppu",	&r_apb0_hw,
46 			  0x1ac, BIT(0), 0);
47 
48 static const struct clk_parent_data r_ir_rx_parents[] = {
49 	{ .fw_name = "losc" },
50 	{ .fw_name = "hosc" },
51 };
52 static SUNXI_CCU_MP_DATA_WITH_MUX_GATE(r_ir_rx_clk, "r-ir-rx",
53 				       r_ir_rx_parents, 0x1c0,
54 				       0, 5,	/* M */
55 				       8, 2,	/* P */
56 				       24, 2,	/* mux */
57 				       BIT(31),	/* gate */
58 				       0);
59 
60 static SUNXI_CCU_GATE_HWS(bus_r_ir_rx_clk,	"bus-r-ir-rx",	&r_apb0_hw,
61 			  0x1cc, BIT(0), 0);
62 static SUNXI_CCU_GATE_HWS(bus_r_rtc_clk,	"bus-r-rtc",	&r_ahb_hw,
63 			  0x20c, BIT(0), 0);
64 static SUNXI_CCU_GATE_HWS(bus_r_cpucfg_clk,	"bus-r-cpucfg",	&r_apb0_hw,
65 			  0x22c, BIT(0), 0);
66 
67 static struct ccu_common *sun20i_d1_r_ccu_clks[] = {
68 	&r_ahb_clk.common,
69 	&r_apb0_clk.common,
70 	&bus_r_timer_clk.common,
71 	&bus_r_twd_clk.common,
72 	&bus_r_ppu_clk.common,
73 	&r_ir_rx_clk.common,
74 	&bus_r_ir_rx_clk.common,
75 	&bus_r_rtc_clk.common,
76 	&bus_r_cpucfg_clk.common,
77 };
78 
79 static struct clk_hw_onecell_data sun20i_d1_r_hw_clks = {
80 	.num	= CLK_NUMBER,
81 	.hws	= {
82 		[CLK_R_AHB]		= &r_ahb_clk.common.hw,
83 		[CLK_R_APB0]		= &r_apb0_clk.common.hw,
84 		[CLK_BUS_R_TIMER]	= &bus_r_timer_clk.common.hw,
85 		[CLK_BUS_R_TWD]		= &bus_r_twd_clk.common.hw,
86 		[CLK_BUS_R_PPU]		= &bus_r_ppu_clk.common.hw,
87 		[CLK_R_IR_RX]		= &r_ir_rx_clk.common.hw,
88 		[CLK_BUS_R_IR_RX]	= &bus_r_ir_rx_clk.common.hw,
89 		[CLK_BUS_R_RTC]		= &bus_r_rtc_clk.common.hw,
90 		[CLK_BUS_R_CPUCFG]	= &bus_r_cpucfg_clk.common.hw,
91 	},
92 };
93 
94 static struct ccu_reset_map sun20i_d1_r_ccu_resets[] = {
95 	[RST_BUS_R_TIMER]	= { 0x11c, BIT(16) },
96 	[RST_BUS_R_TWD]		= { 0x12c, BIT(16) },
97 	[RST_BUS_R_PPU]		= { 0x1ac, BIT(16) },
98 	[RST_BUS_R_IR_RX]	= { 0x1cc, BIT(16) },
99 	[RST_BUS_R_RTC]		= { 0x20c, BIT(16) },
100 	[RST_BUS_R_CPUCFG]	= { 0x22c, BIT(16) },
101 };
102 
103 static const struct sunxi_ccu_desc sun20i_d1_r_ccu_desc = {
104 	.ccu_clks	= sun20i_d1_r_ccu_clks,
105 	.num_ccu_clks	= ARRAY_SIZE(sun20i_d1_r_ccu_clks),
106 
107 	.hw_clks	= &sun20i_d1_r_hw_clks,
108 
109 	.resets		= sun20i_d1_r_ccu_resets,
110 	.num_resets	= ARRAY_SIZE(sun20i_d1_r_ccu_resets),
111 };
112 
sun20i_d1_r_ccu_probe(struct platform_device * pdev)113 static int sun20i_d1_r_ccu_probe(struct platform_device *pdev)
114 {
115 	void __iomem *reg;
116 
117 	reg = devm_platform_ioremap_resource(pdev, 0);
118 	if (IS_ERR(reg))
119 		return PTR_ERR(reg);
120 
121 	return devm_sunxi_ccu_probe(&pdev->dev, reg, &sun20i_d1_r_ccu_desc);
122 }
123 
124 static const struct of_device_id sun20i_d1_r_ccu_ids[] = {
125 	{ .compatible = "allwinner,sun20i-d1-r-ccu" },
126 	{ }
127 };
128 
129 static struct platform_driver sun20i_d1_r_ccu_driver = {
130 	.probe	= sun20i_d1_r_ccu_probe,
131 	.driver	= {
132 		.name			= "sun20i-d1-r-ccu",
133 		.suppress_bind_attrs	= true,
134 		.of_match_table		= sun20i_d1_r_ccu_ids,
135 	},
136 };
137 module_platform_driver(sun20i_d1_r_ccu_driver);
138 
139 MODULE_IMPORT_NS(SUNXI_CCU);
140 MODULE_LICENSE("GPL");
141