1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Copyright (c) 2020 Yangtao Li <frank@allwinnertech.com>
4 */
5
6 #include <linux/clk-provider.h>
7 #include <linux/module.h>
8 #include <linux/platform_device.h>
9
10 #include "ccu_common.h"
11 #include "ccu_reset.h"
12
13 #include "ccu_div.h"
14 #include "ccu_gate.h"
15 #include "ccu_mp.h"
16 #include "ccu_nm.h"
17
18 #include "ccu-sun50i-a100-r.h"
19
20 static const char * const cpus_r_apb2_parents[] = { "dcxo24M", "osc32k",
21 "iosc", "pll-periph0" };
22 static const struct ccu_mux_var_prediv cpus_r_apb2_predivs[] = {
23 { .index = 3, .shift = 0, .width = 5 },
24 };
25
26 static struct ccu_div r_cpus_clk = {
27 .div = _SUNXI_CCU_DIV_FLAGS(8, 2, CLK_DIVIDER_POWER_OF_TWO),
28
29 .mux = {
30 .shift = 24,
31 .width = 2,
32
33 .var_predivs = cpus_r_apb2_predivs,
34 .n_var_predivs = ARRAY_SIZE(cpus_r_apb2_predivs),
35 },
36
37 .common = {
38 .reg = 0x000,
39 .features = CCU_FEATURE_VARIABLE_PREDIV,
40 .hw.init = CLK_HW_INIT_PARENTS("cpus",
41 cpus_r_apb2_parents,
42 &ccu_div_ops,
43 0),
44 },
45 };
46
47 static CLK_FIXED_FACTOR_HW(r_ahb_clk, "r-ahb", &r_cpus_clk.common.hw, 1, 1, 0);
48
49 static struct ccu_div r_apb1_clk = {
50 .div = _SUNXI_CCU_DIV(0, 2),
51
52 .common = {
53 .reg = 0x00c,
54 .hw.init = CLK_HW_INIT("r-apb1",
55 "r-ahb",
56 &ccu_div_ops,
57 0),
58 },
59 };
60
61 static struct ccu_div r_apb2_clk = {
62 .div = _SUNXI_CCU_DIV_FLAGS(8, 2, CLK_DIVIDER_POWER_OF_TWO),
63
64 .mux = {
65 .shift = 24,
66 .width = 2,
67
68 .var_predivs = cpus_r_apb2_predivs,
69 .n_var_predivs = ARRAY_SIZE(cpus_r_apb2_predivs),
70 },
71
72 .common = {
73 .reg = 0x010,
74 .features = CCU_FEATURE_VARIABLE_PREDIV,
75 .hw.init = CLK_HW_INIT_PARENTS("r-apb2",
76 cpus_r_apb2_parents,
77 &ccu_div_ops,
78 0),
79 },
80 };
81
82 static const struct clk_parent_data clk_parent_r_apb1[] = {
83 { .hw = &r_apb1_clk.common.hw },
84 };
85
86 static const struct clk_parent_data clk_parent_r_apb2[] = {
87 { .hw = &r_apb2_clk.common.hw },
88 };
89
90 static SUNXI_CCU_GATE_DATA(r_apb1_timer_clk, "r-apb1-timer", clk_parent_r_apb1,
91 0x11c, BIT(0), 0);
92
93 static SUNXI_CCU_GATE_DATA(r_apb1_twd_clk, "r-apb1-twd", clk_parent_r_apb1,
94 0x12c, BIT(0), 0);
95
96 static const char * const r_apb1_pwm_clk_parents[] = { "dcxo24M", "osc32k",
97 "iosc" };
98 static SUNXI_CCU_MUX(r_apb1_pwm_clk, "r-apb1-pwm", r_apb1_pwm_clk_parents,
99 0x130, 24, 2, 0);
100
101 static SUNXI_CCU_GATE_DATA(r_apb1_bus_pwm_clk, "r-apb1-bus-pwm",
102 clk_parent_r_apb1, 0x13c, BIT(0), 0);
103
104 static SUNXI_CCU_GATE_DATA(r_apb1_ppu_clk, "r-apb1-ppu", clk_parent_r_apb1,
105 0x17c, BIT(0), 0);
106
107 static SUNXI_CCU_GATE_DATA(r_apb2_uart_clk, "r-apb2-uart", clk_parent_r_apb2,
108 0x18c, BIT(0), 0);
109
110 static SUNXI_CCU_GATE_DATA(r_apb2_i2c0_clk, "r-apb2-i2c0", clk_parent_r_apb2,
111 0x19c, BIT(0), 0);
112
113 static SUNXI_CCU_GATE_DATA(r_apb2_i2c1_clk, "r-apb2-i2c1", clk_parent_r_apb2,
114 0x19c, BIT(1), 0);
115
116 static const char * const r_apb1_ir_rx_parents[] = { "osc32k", "dcxo24M" };
117 static SUNXI_CCU_MP_WITH_MUX_GATE(r_apb1_ir_rx_clk, "r-apb1-ir-rx",
118 r_apb1_ir_rx_parents, 0x1c0,
119 0, 5, /* M */
120 8, 2, /* P */
121 24, 1, /* mux */
122 BIT(31), /* gate */
123 0);
124
125 static SUNXI_CCU_GATE_DATA(r_apb1_bus_ir_rx_clk, "r-apb1-bus-ir-rx",
126 clk_parent_r_apb1, 0x1cc, BIT(0), 0);
127
128 static SUNXI_CCU_GATE(r_ahb_bus_rtc_clk, "r-ahb-rtc", "r-ahb",
129 0x20c, BIT(0), 0);
130
131 static struct ccu_common *sun50i_a100_r_ccu_clks[] = {
132 &r_cpus_clk.common,
133 &r_apb1_clk.common,
134 &r_apb2_clk.common,
135 &r_apb1_timer_clk.common,
136 &r_apb1_twd_clk.common,
137 &r_apb1_pwm_clk.common,
138 &r_apb1_bus_pwm_clk.common,
139 &r_apb1_ppu_clk.common,
140 &r_apb2_uart_clk.common,
141 &r_apb2_i2c0_clk.common,
142 &r_apb2_i2c1_clk.common,
143 &r_apb1_ir_rx_clk.common,
144 &r_apb1_bus_ir_rx_clk.common,
145 &r_ahb_bus_rtc_clk.common,
146 };
147
148 static struct clk_hw_onecell_data sun50i_a100_r_hw_clks = {
149 .hws = {
150 [CLK_R_CPUS] = &r_cpus_clk.common.hw,
151 [CLK_R_AHB] = &r_ahb_clk.hw,
152 [CLK_R_APB1] = &r_apb1_clk.common.hw,
153 [CLK_R_APB2] = &r_apb2_clk.common.hw,
154 [CLK_R_APB1_TIMER] = &r_apb1_timer_clk.common.hw,
155 [CLK_R_APB1_TWD] = &r_apb1_twd_clk.common.hw,
156 [CLK_R_APB1_PWM] = &r_apb1_pwm_clk.common.hw,
157 [CLK_R_APB1_BUS_PWM] = &r_apb1_bus_pwm_clk.common.hw,
158 [CLK_R_APB1_PPU] = &r_apb1_ppu_clk.common.hw,
159 [CLK_R_APB2_UART] = &r_apb2_uart_clk.common.hw,
160 [CLK_R_APB2_I2C0] = &r_apb2_i2c0_clk.common.hw,
161 [CLK_R_APB2_I2C1] = &r_apb2_i2c1_clk.common.hw,
162 [CLK_R_APB1_IR] = &r_apb1_ir_rx_clk.common.hw,
163 [CLK_R_APB1_BUS_IR] = &r_apb1_bus_ir_rx_clk.common.hw,
164 [CLK_R_AHB_BUS_RTC] = &r_ahb_bus_rtc_clk.common.hw,
165 },
166 .num = CLK_NUMBER,
167 };
168
169 static const struct ccu_reset_map sun50i_a100_r_ccu_resets[] = {
170 [RST_R_APB1_TIMER] = { 0x11c, BIT(16) },
171 [RST_R_APB1_BUS_PWM] = { 0x13c, BIT(16) },
172 [RST_R_APB1_PPU] = { 0x17c, BIT(16) },
173 [RST_R_APB2_UART] = { 0x18c, BIT(16) },
174 [RST_R_APB2_I2C0] = { 0x19c, BIT(16) },
175 [RST_R_APB2_I2C1] = { 0x19c, BIT(17) },
176 [RST_R_APB1_BUS_IR] = { 0x1cc, BIT(16) },
177 [RST_R_AHB_BUS_RTC] = { 0x20c, BIT(16) },
178 };
179
180 static const struct sunxi_ccu_desc sun50i_a100_r_ccu_desc = {
181 .ccu_clks = sun50i_a100_r_ccu_clks,
182 .num_ccu_clks = ARRAY_SIZE(sun50i_a100_r_ccu_clks),
183
184 .hw_clks = &sun50i_a100_r_hw_clks,
185
186 .resets = sun50i_a100_r_ccu_resets,
187 .num_resets = ARRAY_SIZE(sun50i_a100_r_ccu_resets),
188 };
189
sun50i_a100_r_ccu_probe(struct platform_device * pdev)190 static int sun50i_a100_r_ccu_probe(struct platform_device *pdev)
191 {
192 void __iomem *reg;
193
194 reg = devm_platform_ioremap_resource(pdev, 0);
195 if (IS_ERR(reg))
196 return PTR_ERR(reg);
197
198 return devm_sunxi_ccu_probe(&pdev->dev, reg, &sun50i_a100_r_ccu_desc);
199 }
200
201 static const struct of_device_id sun50i_a100_r_ccu_ids[] = {
202 { .compatible = "allwinner,sun50i-a100-r-ccu" },
203 { }
204 };
205 MODULE_DEVICE_TABLE(of, sun50i_a100_r_ccu_ids);
206
207 static struct platform_driver sun50i_a100_r_ccu_driver = {
208 .probe = sun50i_a100_r_ccu_probe,
209 .driver = {
210 .name = "sun50i-a100-r-ccu",
211 .suppress_bind_attrs = true,
212 .of_match_table = sun50i_a100_r_ccu_ids,
213 },
214 };
215 module_platform_driver(sun50i_a100_r_ccu_driver);
216
217 MODULE_IMPORT_NS("SUNXI_CCU");
218 MODULE_DESCRIPTION("Support for the Allwinner A100 PRCM CCU");
219 MODULE_LICENSE("GPL");
220