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_VIDEO_PLL0_OUT_MAIN,
23 };
24 
25 static const struct pll_vco fabia_vco[] = {
26 	{ 249600000, 2000000000, 0 },
27 };
28 
29 static struct clk_alpha_pll video_pll0 = {
30 	.offset = 0x42c,
31 	.vco_table = fabia_vco,
32 	.num_vco = ARRAY_SIZE(fabia_vco),
33 	.regs = clk_alpha_pll_regs[CLK_ALPHA_PLL_TYPE_FABIA],
34 	.clkr = {
35 		.hw.init = &(struct clk_init_data){
36 			.name = "video_pll0",
37 			.parent_data = &(const struct clk_parent_data){
38 				.fw_name = "bi_tcxo",
39 			},
40 			.num_parents = 1,
41 			.ops = &clk_alpha_pll_fabia_ops,
42 		},
43 	},
44 };
45 
46 static const struct parent_map video_cc_parent_map_1[] = {
47 	{ P_BI_TCXO, 0 },
48 	{ P_VIDEO_PLL0_OUT_MAIN, 1 },
49 };
50 
51 static const struct clk_parent_data video_cc_parent_data_1[] = {
52 	{ .fw_name = "bi_tcxo" },
53 	{ .hw = &video_pll0.clkr.hw },
54 };
55 
56 static const struct freq_tbl ftbl_video_cc_venus_clk_src[] = {
57 	F(19200000, P_BI_TCXO, 1, 0, 0),
58 	F(150000000, P_VIDEO_PLL0_OUT_MAIN, 4, 0, 0),
59 	F(270000000, P_VIDEO_PLL0_OUT_MAIN, 2.5, 0, 0),
60 	F(340000000, P_VIDEO_PLL0_OUT_MAIN, 2, 0, 0),
61 	F(434000000, P_VIDEO_PLL0_OUT_MAIN, 2, 0, 0),
62 	F(500000000, P_VIDEO_PLL0_OUT_MAIN, 2, 0, 0),
63 	{ }
64 };
65 
66 static struct clk_rcg2 video_cc_venus_clk_src = {
67 	.cmd_rcgr = 0x7f0,
68 	.mnd_width = 0,
69 	.hid_width = 5,
70 	.parent_map = video_cc_parent_map_1,
71 	.freq_tbl = ftbl_video_cc_venus_clk_src,
72 	.clkr.hw.init = &(struct clk_init_data){
73 		.name = "video_cc_venus_clk_src",
74 		.parent_data = video_cc_parent_data_1,
75 		.num_parents = ARRAY_SIZE(video_cc_parent_data_1),
76 		.flags = CLK_SET_RATE_PARENT,
77 		.ops = &clk_rcg2_shared_ops,
78 	},
79 };
80 
81 static struct clk_branch video_cc_vcodec0_axi_clk = {
82 	.halt_reg = 0x9ec,
83 	.halt_check = BRANCH_HALT,
84 	.clkr = {
85 		.enable_reg = 0x9ec,
86 		.enable_mask = BIT(0),
87 		.hw.init = &(struct clk_init_data){
88 			.name = "video_cc_vcodec0_axi_clk",
89 			.ops = &clk_branch2_ops,
90 		},
91 	},
92 };
93 
94 static struct clk_branch video_cc_vcodec0_core_clk = {
95 	.halt_reg = 0x890,
96 	.halt_check = BRANCH_HALT_VOTED,
97 	.clkr = {
98 		.enable_reg = 0x890,
99 		.enable_mask = BIT(0),
100 		.hw.init = &(struct clk_init_data){
101 			.name = "video_cc_vcodec0_core_clk",
102 			.parent_hws = (const struct clk_hw*[]){
103 				&video_cc_venus_clk_src.clkr.hw,
104 			},
105 			.num_parents = 1,
106 			.flags = CLK_SET_RATE_PARENT,
107 			.ops = &clk_branch2_ops,
108 		},
109 	},
110 };
111 
112 static struct clk_branch video_cc_venus_ahb_clk = {
113 	.halt_reg = 0xa4c,
114 	.halt_check = BRANCH_HALT,
115 	.clkr = {
116 		.enable_reg = 0xa4c,
117 		.enable_mask = BIT(0),
118 		.hw.init = &(struct clk_init_data){
119 			.name = "video_cc_venus_ahb_clk",
120 			.ops = &clk_branch2_ops,
121 		},
122 	},
123 };
124 
125 static struct clk_branch video_cc_venus_ctl_axi_clk = {
126 	.halt_reg = 0x9cc,
127 	.halt_check = BRANCH_HALT,
128 	.clkr = {
129 		.enable_reg = 0x9cc,
130 		.enable_mask = BIT(0),
131 		.hw.init = &(struct clk_init_data){
132 			.name = "video_cc_venus_ctl_axi_clk",
133 			.ops = &clk_branch2_ops,
134 		},
135 	},
136 };
137 
138 static struct clk_branch video_cc_venus_ctl_core_clk = {
139 	.halt_reg = 0x850,
140 	.halt_check = BRANCH_HALT,
141 	.clkr = {
142 		.enable_reg = 0x850,
143 		.enable_mask = BIT(0),
144 		.hw.init = &(struct clk_init_data){
145 			.name = "video_cc_venus_ctl_core_clk",
146 			.parent_hws = (const struct clk_hw*[]){
147 				&video_cc_venus_clk_src.clkr.hw,
148 			},
149 			.num_parents = 1,
150 			.flags = CLK_SET_RATE_PARENT,
151 			.ops = &clk_branch2_ops,
152 		},
153 	},
154 };
155 
156 static struct gdsc venus_gdsc = {
157 	.gdscr = 0x814,
158 	.pd = {
159 		.name = "venus_gdsc",
160 	},
161 	.pwrsts = PWRSTS_OFF_ON,
162 };
163 
164 static struct gdsc vcodec0_gdsc = {
165 	.gdscr = 0x874,
166 	.pd = {
167 		.name = "vcodec0_gdsc",
168 	},
169 	.flags = HW_CTRL,
170 	.pwrsts = PWRSTS_OFF_ON,
171 };
172 
173 static struct clk_regmap *video_cc_sc7180_clocks[] = {
174 	[VIDEO_CC_VCODEC0_AXI_CLK] = &video_cc_vcodec0_axi_clk.clkr,
175 	[VIDEO_CC_VCODEC0_CORE_CLK] = &video_cc_vcodec0_core_clk.clkr,
176 	[VIDEO_CC_VENUS_AHB_CLK] = &video_cc_venus_ahb_clk.clkr,
177 	[VIDEO_CC_VENUS_CLK_SRC] = &video_cc_venus_clk_src.clkr,
178 	[VIDEO_CC_VENUS_CTL_AXI_CLK] = &video_cc_venus_ctl_axi_clk.clkr,
179 	[VIDEO_CC_VENUS_CTL_CORE_CLK] = &video_cc_venus_ctl_core_clk.clkr,
180 	[VIDEO_PLL0] = &video_pll0.clkr,
181 };
182 
183 static struct gdsc *video_cc_sc7180_gdscs[] = {
184 	[VENUS_GDSC] = &venus_gdsc,
185 	[VCODEC0_GDSC] = &vcodec0_gdsc,
186 };
187 
188 static const struct regmap_config video_cc_sc7180_regmap_config = {
189 	.reg_bits = 32,
190 	.reg_stride = 4,
191 	.val_bits = 32,
192 	.max_register = 0xb94,
193 	.fast_io = true,
194 };
195 
196 static const struct qcom_cc_desc video_cc_sc7180_desc = {
197 	.config = &video_cc_sc7180_regmap_config,
198 	.clks = video_cc_sc7180_clocks,
199 	.num_clks = ARRAY_SIZE(video_cc_sc7180_clocks),
200 	.gdscs = video_cc_sc7180_gdscs,
201 	.num_gdscs = ARRAY_SIZE(video_cc_sc7180_gdscs),
202 };
203 
204 static const struct of_device_id video_cc_sc7180_match_table[] = {
205 	{ .compatible = "qcom,sc7180-videocc" },
206 	{ }
207 };
208 MODULE_DEVICE_TABLE(of, video_cc_sc7180_match_table);
209 
video_cc_sc7180_probe(struct platform_device * pdev)210 static int video_cc_sc7180_probe(struct platform_device *pdev)
211 {
212 	struct regmap *regmap;
213 	struct alpha_pll_config video_pll0_config = {};
214 
215 	regmap = qcom_cc_map(pdev, &video_cc_sc7180_desc);
216 	if (IS_ERR(regmap))
217 		return PTR_ERR(regmap);
218 
219 	video_pll0_config.l = 0x1f;
220 	video_pll0_config.alpha = 0x4000;
221 	video_pll0_config.user_ctl_val = 0x00000001;
222 	video_pll0_config.user_ctl_hi_val = 0x00004805;
223 
224 	clk_fabia_pll_configure(&video_pll0, regmap, &video_pll0_config);
225 
226 	/* Keep VIDEO_CC_XO_CLK ALWAYS-ON */
227 	regmap_update_bits(regmap, 0x984, 0x1, 0x1);
228 
229 	return qcom_cc_really_probe(pdev, &video_cc_sc7180_desc, regmap);
230 }
231 
232 static struct platform_driver video_cc_sc7180_driver = {
233 	.probe = video_cc_sc7180_probe,
234 	.driver = {
235 		.name = "sc7180-videocc",
236 		.of_match_table = video_cc_sc7180_match_table,
237 	},
238 };
239 
video_cc_sc7180_init(void)240 static int __init video_cc_sc7180_init(void)
241 {
242 	return platform_driver_register(&video_cc_sc7180_driver);
243 }
244 subsys_initcall(video_cc_sc7180_init);
245 
video_cc_sc7180_exit(void)246 static void __exit video_cc_sc7180_exit(void)
247 {
248 	platform_driver_unregister(&video_cc_sc7180_driver);
249 }
250 module_exit(video_cc_sc7180_exit);
251 
252 MODULE_LICENSE("GPL v2");
253 MODULE_DESCRIPTION("QTI VIDEOCC SC7180 Driver");
254