1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3  * Copyright (c) 2019, The Linux Foundation. All rights reserved.
4  */
5 
6 #include <linux/clk-provider.h>
7 #include <linux/module.h>
8 #include <linux/platform_device.h>
9 #include <linux/regmap.h>
10 
11 #include <dt-bindings/clock/qcom,videocc-sc7180.h>
12 
13 #include "clk-alpha-pll.h"
14 #include "clk-branch.h"
15 #include "clk-rcg.h"
16 #include "clk-regmap.h"
17 #include "common.h"
18 #include "gdsc.h"
19 
20 enum {
21 	P_BI_TCXO,
22 	P_CHIP_SLEEP_CLK,
23 	P_CORE_BI_PLL_TEST_SE,
24 	P_VIDEO_PLL0_OUT_EVEN,
25 	P_VIDEO_PLL0_OUT_MAIN,
26 	P_VIDEO_PLL0_OUT_ODD,
27 };
28 
29 static const struct pll_vco fabia_vco[] = {
30 	{ 249600000, 2000000000, 0 },
31 };
32 
33 static struct clk_alpha_pll video_pll0 = {
34 	.offset = 0x42c,
35 	.vco_table = fabia_vco,
36 	.num_vco = ARRAY_SIZE(fabia_vco),
37 	.regs = clk_alpha_pll_regs[CLK_ALPHA_PLL_TYPE_FABIA],
38 	.clkr = {
39 		.hw.init = &(struct clk_init_data){
40 			.name = "video_pll0",
41 			.parent_data = &(const struct clk_parent_data){
42 				.fw_name = "bi_tcxo",
43 			},
44 			.num_parents = 1,
45 			.ops = &clk_alpha_pll_fabia_ops,
46 		},
47 	},
48 };
49 
50 static const struct parent_map video_cc_parent_map_1[] = {
51 	{ P_BI_TCXO, 0 },
52 	{ P_VIDEO_PLL0_OUT_MAIN, 1 },
53 };
54 
55 static const struct clk_parent_data video_cc_parent_data_1[] = {
56 	{ .fw_name = "bi_tcxo" },
57 	{ .hw = &video_pll0.clkr.hw },
58 };
59 
60 static const struct freq_tbl ftbl_video_cc_venus_clk_src[] = {
61 	F(19200000, P_BI_TCXO, 1, 0, 0),
62 	F(150000000, P_VIDEO_PLL0_OUT_MAIN, 4, 0, 0),
63 	F(270000000, P_VIDEO_PLL0_OUT_MAIN, 2.5, 0, 0),
64 	F(340000000, P_VIDEO_PLL0_OUT_MAIN, 2, 0, 0),
65 	F(434000000, P_VIDEO_PLL0_OUT_MAIN, 2, 0, 0),
66 	F(500000000, P_VIDEO_PLL0_OUT_MAIN, 2, 0, 0),
67 	{ }
68 };
69 
70 static struct clk_rcg2 video_cc_venus_clk_src = {
71 	.cmd_rcgr = 0x7f0,
72 	.mnd_width = 0,
73 	.hid_width = 5,
74 	.parent_map = video_cc_parent_map_1,
75 	.freq_tbl = ftbl_video_cc_venus_clk_src,
76 	.clkr.hw.init = &(struct clk_init_data){
77 		.name = "video_cc_venus_clk_src",
78 		.parent_data = video_cc_parent_data_1,
79 		.num_parents = ARRAY_SIZE(video_cc_parent_data_1),
80 		.flags = CLK_SET_RATE_PARENT,
81 		.ops = &clk_rcg2_shared_ops,
82 	},
83 };
84 
85 static struct clk_branch video_cc_vcodec0_axi_clk = {
86 	.halt_reg = 0x9ec,
87 	.halt_check = BRANCH_HALT,
88 	.clkr = {
89 		.enable_reg = 0x9ec,
90 		.enable_mask = BIT(0),
91 		.hw.init = &(struct clk_init_data){
92 			.name = "video_cc_vcodec0_axi_clk",
93 			.ops = &clk_branch2_ops,
94 		},
95 	},
96 };
97 
98 static struct clk_branch video_cc_vcodec0_core_clk = {
99 	.halt_reg = 0x890,
100 	.halt_check = BRANCH_HALT_VOTED,
101 	.clkr = {
102 		.enable_reg = 0x890,
103 		.enable_mask = BIT(0),
104 		.hw.init = &(struct clk_init_data){
105 			.name = "video_cc_vcodec0_core_clk",
106 			.parent_data = &(const struct clk_parent_data){
107 				.hw = &video_cc_venus_clk_src.clkr.hw,
108 			},
109 			.num_parents = 1,
110 			.flags = CLK_SET_RATE_PARENT,
111 			.ops = &clk_branch2_ops,
112 		},
113 	},
114 };
115 
116 static struct clk_branch video_cc_venus_ahb_clk = {
117 	.halt_reg = 0xa4c,
118 	.halt_check = BRANCH_HALT,
119 	.clkr = {
120 		.enable_reg = 0xa4c,
121 		.enable_mask = BIT(0),
122 		.hw.init = &(struct clk_init_data){
123 			.name = "video_cc_venus_ahb_clk",
124 			.ops = &clk_branch2_ops,
125 		},
126 	},
127 };
128 
129 static struct clk_branch video_cc_venus_ctl_axi_clk = {
130 	.halt_reg = 0x9cc,
131 	.halt_check = BRANCH_HALT,
132 	.clkr = {
133 		.enable_reg = 0x9cc,
134 		.enable_mask = BIT(0),
135 		.hw.init = &(struct clk_init_data){
136 			.name = "video_cc_venus_ctl_axi_clk",
137 			.ops = &clk_branch2_ops,
138 		},
139 	},
140 };
141 
142 static struct clk_branch video_cc_venus_ctl_core_clk = {
143 	.halt_reg = 0x850,
144 	.halt_check = BRANCH_HALT,
145 	.clkr = {
146 		.enable_reg = 0x850,
147 		.enable_mask = BIT(0),
148 		.hw.init = &(struct clk_init_data){
149 			.name = "video_cc_venus_ctl_core_clk",
150 			.parent_data = &(const struct clk_parent_data){
151 				.hw = &video_cc_venus_clk_src.clkr.hw,
152 			},
153 			.num_parents = 1,
154 			.flags = CLK_SET_RATE_PARENT,
155 			.ops = &clk_branch2_ops,
156 		},
157 	},
158 };
159 
160 static struct gdsc venus_gdsc = {
161 	.gdscr = 0x814,
162 	.pd = {
163 		.name = "venus_gdsc",
164 	},
165 	.pwrsts = PWRSTS_OFF_ON,
166 };
167 
168 static struct gdsc vcodec0_gdsc = {
169 	.gdscr = 0x874,
170 	.pd = {
171 		.name = "vcodec0_gdsc",
172 	},
173 	.flags = HW_CTRL,
174 	.pwrsts = PWRSTS_OFF_ON,
175 };
176 
177 static struct clk_regmap *video_cc_sc7180_clocks[] = {
178 	[VIDEO_CC_VCODEC0_AXI_CLK] = &video_cc_vcodec0_axi_clk.clkr,
179 	[VIDEO_CC_VCODEC0_CORE_CLK] = &video_cc_vcodec0_core_clk.clkr,
180 	[VIDEO_CC_VENUS_AHB_CLK] = &video_cc_venus_ahb_clk.clkr,
181 	[VIDEO_CC_VENUS_CLK_SRC] = &video_cc_venus_clk_src.clkr,
182 	[VIDEO_CC_VENUS_CTL_AXI_CLK] = &video_cc_venus_ctl_axi_clk.clkr,
183 	[VIDEO_CC_VENUS_CTL_CORE_CLK] = &video_cc_venus_ctl_core_clk.clkr,
184 	[VIDEO_PLL0] = &video_pll0.clkr,
185 };
186 
187 static struct gdsc *video_cc_sc7180_gdscs[] = {
188 	[VENUS_GDSC] = &venus_gdsc,
189 	[VCODEC0_GDSC] = &vcodec0_gdsc,
190 };
191 
192 static const struct regmap_config video_cc_sc7180_regmap_config = {
193 	.reg_bits = 32,
194 	.reg_stride = 4,
195 	.val_bits = 32,
196 	.max_register = 0xb94,
197 	.fast_io = true,
198 };
199 
200 static const struct qcom_cc_desc video_cc_sc7180_desc = {
201 	.config = &video_cc_sc7180_regmap_config,
202 	.clks = video_cc_sc7180_clocks,
203 	.num_clks = ARRAY_SIZE(video_cc_sc7180_clocks),
204 	.gdscs = video_cc_sc7180_gdscs,
205 	.num_gdscs = ARRAY_SIZE(video_cc_sc7180_gdscs),
206 };
207 
208 static const struct of_device_id video_cc_sc7180_match_table[] = {
209 	{ .compatible = "qcom,sc7180-videocc" },
210 	{ }
211 };
212 MODULE_DEVICE_TABLE(of, video_cc_sc7180_match_table);
213 
214 static int video_cc_sc7180_probe(struct platform_device *pdev)
215 {
216 	struct regmap *regmap;
217 	struct alpha_pll_config video_pll0_config = {};
218 
219 	regmap = qcom_cc_map(pdev, &video_cc_sc7180_desc);
220 	if (IS_ERR(regmap))
221 		return PTR_ERR(regmap);
222 
223 	video_pll0_config.l = 0x1f;
224 	video_pll0_config.alpha = 0x4000;
225 	video_pll0_config.user_ctl_val = 0x00000001;
226 	video_pll0_config.user_ctl_hi_val = 0x00004805;
227 
228 	clk_fabia_pll_configure(&video_pll0, regmap, &video_pll0_config);
229 
230 	/* Keep VIDEO_CC_XO_CLK ALWAYS-ON */
231 	regmap_update_bits(regmap, 0x984, 0x1, 0x1);
232 
233 	return qcom_cc_really_probe(pdev, &video_cc_sc7180_desc, regmap);
234 }
235 
236 static struct platform_driver video_cc_sc7180_driver = {
237 	.probe = video_cc_sc7180_probe,
238 	.driver = {
239 		.name = "sc7180-videocc",
240 		.of_match_table = video_cc_sc7180_match_table,
241 	},
242 };
243 
244 static int __init video_cc_sc7180_init(void)
245 {
246 	return platform_driver_register(&video_cc_sc7180_driver);
247 }
248 subsys_initcall(video_cc_sc7180_init);
249 
250 static void __exit video_cc_sc7180_exit(void)
251 {
252 	platform_driver_unregister(&video_cc_sc7180_driver);
253 }
254 module_exit(video_cc_sc7180_exit);
255 
256 MODULE_LICENSE("GPL v2");
257 MODULE_DESCRIPTION("QTI VIDEOCC SC7180 Driver");
258