]> git.proxmox.com Git - mirror_ubuntu-kernels.git/blob - drivers/clk/meson/axg-audio.c
projects / mirror_ubuntu-kernels.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
HID: logitech-dj: fix spelling in printk
[mirror_ubuntu-kernels.git] / drivers / clk / meson / axg-audio.c
1 // SPDX-License-Identifier: (GPL-2.0 OR MIT)
2 /*
3 * Copyright (c) 2018 BayLibre, SAS.
4 * Author: Jerome Brunet <jbrunet@baylibre.com>
5 */
6
7 #include <linux/clk.h>
8 #include <linux/clk-provider.h>
9 #include <linux/init.h>
10 #include <linux/of_device.h>
11 #include <linux/module.h>
12 #include <linux/platform_device.h>
13 #include <linux/regmap.h>
14 #include <linux/reset.h>
15 #include <linux/slab.h>
16
17 #include "clkc-audio.h"
18 #include "axg-audio.h"
19
20 #define AXG_MST_IN_COUNT 8
21 #define AXG_SLV_SCLK_COUNT 10
22 #define AXG_SLV_LRCLK_COUNT 10
23
24 #define AXG_AUD_GATE(_name, _reg, _bit, _pname, _iflags) \
25 struct clk_regmap axg_##_name = { \
26 .data = &(struct clk_regmap_gate_data){ \
27 .offset = (_reg), \
28 .bit_idx = (_bit), \
29 }, \
30 .hw.init = &(struct clk_init_data) { \
31 .name = "axg_"#_name, \
32 .ops = &clk_regmap_gate_ops, \
33 .parent_names = (const char *[]){ _pname }, \
34 .num_parents = 1, \
35 .flags = CLK_DUTY_CYCLE_PARENT | (_iflags), \
36 }, \
37 }
38
39 #define AXG_AUD_MUX(_name, _reg, _mask, _shift, _dflags, _pnames, _iflags) \
40 struct clk_regmap axg_##_name = { \
41 .data = &(struct clk_regmap_mux_data){ \
42 .offset = (_reg), \
43 .mask = (_mask), \
44 .shift = (_shift), \
45 .flags = (_dflags), \
46 }, \
47 .hw.init = &(struct clk_init_data){ \
48 .name = "axg_"#_name, \
49 .ops = &clk_regmap_mux_ops, \
50 .parent_names = (_pnames), \
51 .num_parents = ARRAY_SIZE(_pnames), \
52 .flags = CLK_DUTY_CYCLE_PARENT | (_iflags), \
53 }, \
54 }
55
56 #define AXG_AUD_DIV(_name, _reg, _shift, _width, _dflags, _pname, _iflags) \
57 struct clk_regmap axg_##_name = { \
58 .data = &(struct clk_regmap_div_data){ \
59 .offset = (_reg), \
60 .shift = (_shift), \
61 .width = (_width), \
62 .flags = (_dflags), \
63 }, \
64 .hw.init = &(struct clk_init_data){ \
65 .name = "axg_"#_name, \
66 .ops = &clk_regmap_divider_ops, \
67 .parent_names = (const char *[]) { _pname }, \
68 .num_parents = 1, \
69 .flags = (_iflags), \
70 }, \
71 }
72
73 #define AXG_PCLK_GATE(_name, _bit) \
74 AXG_AUD_GATE(_name, AUDIO_CLK_GATE_EN, _bit, "axg_audio_pclk", 0)
75
76 /* Audio peripheral clocks */
77 static AXG_PCLK_GATE(ddr_arb, 0);
78 static AXG_PCLK_GATE(pdm, 1);
79 static AXG_PCLK_GATE(tdmin_a, 2);
80 static AXG_PCLK_GATE(tdmin_b, 3);
81 static AXG_PCLK_GATE(tdmin_c, 4);
82 static AXG_PCLK_GATE(tdmin_lb, 5);
83 static AXG_PCLK_GATE(tdmout_a, 6);
84 static AXG_PCLK_GATE(tdmout_b, 7);
85 static AXG_PCLK_GATE(tdmout_c, 8);
86 static AXG_PCLK_GATE(frddr_a, 9);
87 static AXG_PCLK_GATE(frddr_b, 10);
88 static AXG_PCLK_GATE(frddr_c, 11);
89 static AXG_PCLK_GATE(toddr_a, 12);
90 static AXG_PCLK_GATE(toddr_b, 13);
91 static AXG_PCLK_GATE(toddr_c, 14);
92 static AXG_PCLK_GATE(loopback, 15);
93 static AXG_PCLK_GATE(spdifin, 16);
94 static AXG_PCLK_GATE(spdifout, 17);
95 static AXG_PCLK_GATE(resample, 18);
96 static AXG_PCLK_GATE(power_detect, 19);
97
98 /* Audio Master Clocks */
99 static const char * const mst_mux_parent_names[] = {
100 "axg_mst_in0", "axg_mst_in1", "axg_mst_in2", "axg_mst_in3",
101 "axg_mst_in4", "axg_mst_in5", "axg_mst_in6", "axg_mst_in7",
102 };
103
104 #define AXG_MST_MUX(_name, _reg, _flag) \
105 AXG_AUD_MUX(_name##_sel, _reg, 0x7, 24, _flag, \
106 mst_mux_parent_names, CLK_SET_RATE_PARENT)
107
108 #define AXG_MST_MCLK_MUX(_name, _reg) \
109 AXG_MST_MUX(_name, _reg, CLK_MUX_ROUND_CLOSEST)
110
111 #define AXG_MST_SYS_MUX(_name, _reg) \
112 AXG_MST_MUX(_name, _reg, 0)
113
114 static AXG_MST_MCLK_MUX(mst_a_mclk, AUDIO_MCLK_A_CTRL);
115 static AXG_MST_MCLK_MUX(mst_b_mclk, AUDIO_MCLK_B_CTRL);
116 static AXG_MST_MCLK_MUX(mst_c_mclk, AUDIO_MCLK_C_CTRL);
117 static AXG_MST_MCLK_MUX(mst_d_mclk, AUDIO_MCLK_D_CTRL);
118 static AXG_MST_MCLK_MUX(mst_e_mclk, AUDIO_MCLK_E_CTRL);
119 static AXG_MST_MCLK_MUX(mst_f_mclk, AUDIO_MCLK_F_CTRL);
120 static AXG_MST_MCLK_MUX(spdifout_clk, AUDIO_CLK_SPDIFOUT_CTRL);
121 static AXG_MST_MCLK_MUX(pdm_dclk, AUDIO_CLK_PDMIN_CTRL0);
122 static AXG_MST_SYS_MUX(spdifin_clk, AUDIO_CLK_SPDIFIN_CTRL);
123 static AXG_MST_SYS_MUX(pdm_sysclk, AUDIO_CLK_PDMIN_CTRL1);
124
125 #define AXG_MST_DIV(_name, _reg, _flag) \
126 AXG_AUD_DIV(_name##_div, _reg, 0, 16, _flag, \
127 "axg_"#_name"_sel", CLK_SET_RATE_PARENT) \
128
129 #define AXG_MST_MCLK_DIV(_name, _reg) \
130 AXG_MST_DIV(_name, _reg, CLK_DIVIDER_ROUND_CLOSEST)
131
132 #define AXG_MST_SYS_DIV(_name, _reg) \
133 AXG_MST_DIV(_name, _reg, 0)
134
135 static AXG_MST_MCLK_DIV(mst_a_mclk, AUDIO_MCLK_A_CTRL);
136 static AXG_MST_MCLK_DIV(mst_b_mclk, AUDIO_MCLK_B_CTRL);
137 static AXG_MST_MCLK_DIV(mst_c_mclk, AUDIO_MCLK_C_CTRL);
138 static AXG_MST_MCLK_DIV(mst_d_mclk, AUDIO_MCLK_D_CTRL);
139 static AXG_MST_MCLK_DIV(mst_e_mclk, AUDIO_MCLK_E_CTRL);
140 static AXG_MST_MCLK_DIV(mst_f_mclk, AUDIO_MCLK_F_CTRL);
141 static AXG_MST_MCLK_DIV(spdifout_clk, AUDIO_CLK_SPDIFOUT_CTRL);
142 static AXG_MST_MCLK_DIV(pdm_dclk, AUDIO_CLK_PDMIN_CTRL0);
143 static AXG_MST_SYS_DIV(spdifin_clk, AUDIO_CLK_SPDIFIN_CTRL);
144 static AXG_MST_SYS_DIV(pdm_sysclk, AUDIO_CLK_PDMIN_CTRL1);
145
146 #define AXG_MST_MCLK_GATE(_name, _reg) \
147 AXG_AUD_GATE(_name, _reg, 31, "axg_"#_name"_div", \
148 CLK_SET_RATE_PARENT)
149
150 static AXG_MST_MCLK_GATE(mst_a_mclk, AUDIO_MCLK_A_CTRL);
151 static AXG_MST_MCLK_GATE(mst_b_mclk, AUDIO_MCLK_B_CTRL);
152 static AXG_MST_MCLK_GATE(mst_c_mclk, AUDIO_MCLK_C_CTRL);
153 static AXG_MST_MCLK_GATE(mst_d_mclk, AUDIO_MCLK_D_CTRL);
154 static AXG_MST_MCLK_GATE(mst_e_mclk, AUDIO_MCLK_E_CTRL);
155 static AXG_MST_MCLK_GATE(mst_f_mclk, AUDIO_MCLK_F_CTRL);
156 static AXG_MST_MCLK_GATE(spdifout_clk, AUDIO_CLK_SPDIFOUT_CTRL);
157 static AXG_MST_MCLK_GATE(spdifin_clk, AUDIO_CLK_SPDIFIN_CTRL);
158 static AXG_MST_MCLK_GATE(pdm_dclk, AUDIO_CLK_PDMIN_CTRL0);
159 static AXG_MST_MCLK_GATE(pdm_sysclk, AUDIO_CLK_PDMIN_CTRL1);
160
161 /* Sample Clocks */
162 #define AXG_MST_SCLK_PRE_EN(_name, _reg) \
163 AXG_AUD_GATE(mst_##_name##_sclk_pre_en, _reg, 31, \
164 "axg_mst_"#_name"_mclk", 0)
165
166 static AXG_MST_SCLK_PRE_EN(a, AUDIO_MST_A_SCLK_CTRL0);
167 static AXG_MST_SCLK_PRE_EN(b, AUDIO_MST_B_SCLK_CTRL0);
168 static AXG_MST_SCLK_PRE_EN(c, AUDIO_MST_C_SCLK_CTRL0);
169 static AXG_MST_SCLK_PRE_EN(d, AUDIO_MST_D_SCLK_CTRL0);
170 static AXG_MST_SCLK_PRE_EN(e, AUDIO_MST_E_SCLK_CTRL0);
171 static AXG_MST_SCLK_PRE_EN(f, AUDIO_MST_F_SCLK_CTRL0);
172
173 #define AXG_AUD_SCLK_DIV(_name, _reg, _div_shift, _div_width, \
174 _hi_shift, _hi_width, _pname, _iflags) \
175 struct clk_regmap axg_##_name = { \
176 .data = &(struct meson_sclk_div_data) { \
177 .div = { \
178 .reg_off = (_reg), \
179 .shift = (_div_shift), \
180 .width = (_div_width), \
181 }, \
182 .hi = { \
183 .reg_off = (_reg), \
184 .shift = (_hi_shift), \
185 .width = (_hi_width), \
186 }, \
187 }, \
188 .hw.init = &(struct clk_init_data) { \
189 .name = "axg_"#_name, \
190 .ops = &meson_sclk_div_ops, \
191 .parent_names = (const char *[]) { _pname }, \
192 .num_parents = 1, \
193 .flags = (_iflags), \
194 }, \
195 }
196
197 #define AXG_MST_SCLK_DIV(_name, _reg) \
198 AXG_AUD_SCLK_DIV(mst_##_name##_sclk_div, _reg, 20, 10, 0, 0, \
199 "axg_mst_"#_name"_sclk_pre_en", \
200 CLK_SET_RATE_PARENT)
201
202 static AXG_MST_SCLK_DIV(a, AUDIO_MST_A_SCLK_CTRL0);
203 static AXG_MST_SCLK_DIV(b, AUDIO_MST_B_SCLK_CTRL0);
204 static AXG_MST_SCLK_DIV(c, AUDIO_MST_C_SCLK_CTRL0);
205 static AXG_MST_SCLK_DIV(d, AUDIO_MST_D_SCLK_CTRL0);
206 static AXG_MST_SCLK_DIV(e, AUDIO_MST_E_SCLK_CTRL0);
207 static AXG_MST_SCLK_DIV(f, AUDIO_MST_F_SCLK_CTRL0);
208
209 #define AXG_MST_SCLK_POST_EN(_name, _reg) \
210 AXG_AUD_GATE(mst_##_name##_sclk_post_en, _reg, 30, \
211 "axg_mst_"#_name"_sclk_div", CLK_SET_RATE_PARENT)
212
213 static AXG_MST_SCLK_POST_EN(a, AUDIO_MST_A_SCLK_CTRL0);
214 static AXG_MST_SCLK_POST_EN(b, AUDIO_MST_B_SCLK_CTRL0);
215 static AXG_MST_SCLK_POST_EN(c, AUDIO_MST_C_SCLK_CTRL0);
216 static AXG_MST_SCLK_POST_EN(d, AUDIO_MST_D_SCLK_CTRL0);
217 static AXG_MST_SCLK_POST_EN(e, AUDIO_MST_E_SCLK_CTRL0);
218 static AXG_MST_SCLK_POST_EN(f, AUDIO_MST_F_SCLK_CTRL0);
219
220 #define AXG_AUD_TRIPHASE(_name, _reg, _width, _shift0, _shift1, _shift2, \
221 _pname, _iflags) \
222 struct clk_regmap axg_##_name = { \
223 .data = &(struct meson_clk_triphase_data) { \
224 .ph0 = { \
225 .reg_off = (_reg), \
226 .shift = (_shift0), \
227 .width = (_width), \
228 }, \
229 .ph1 = { \
230 .reg_off = (_reg), \
231 .shift = (_shift1), \
232 .width = (_width), \
233 }, \
234 .ph2 = { \
235 .reg_off = (_reg), \
236 .shift = (_shift2), \
237 .width = (_width), \
238 }, \
239 }, \
240 .hw.init = &(struct clk_init_data) { \
241 .name = "axg_"#_name, \
242 .ops = &meson_clk_triphase_ops, \
243 .parent_names = (const char *[]) { _pname }, \
244 .num_parents = 1, \
245 .flags = CLK_DUTY_CYCLE_PARENT | (_iflags), \
246 }, \
247 }
248
249 #define AXG_MST_SCLK(_name, _reg) \
250 AXG_AUD_TRIPHASE(mst_##_name##_sclk, _reg, 1, 0, 2, 4, \
251 "axg_mst_"#_name"_sclk_post_en", CLK_SET_RATE_PARENT)
252
253 static AXG_MST_SCLK(a, AUDIO_MST_A_SCLK_CTRL1);
254 static AXG_MST_SCLK(b, AUDIO_MST_B_SCLK_CTRL1);
255 static AXG_MST_SCLK(c, AUDIO_MST_C_SCLK_CTRL1);
256 static AXG_MST_SCLK(d, AUDIO_MST_D_SCLK_CTRL1);
257 static AXG_MST_SCLK(e, AUDIO_MST_E_SCLK_CTRL1);
258 static AXG_MST_SCLK(f, AUDIO_MST_F_SCLK_CTRL1);
259
260 #define AXG_MST_LRCLK_DIV(_name, _reg) \
261 AXG_AUD_SCLK_DIV(mst_##_name##_lrclk_div, _reg, 0, 10, 10, 10, \
262 "axg_mst_"#_name"_sclk_post_en", 0) \
263
264 static AXG_MST_LRCLK_DIV(a, AUDIO_MST_A_SCLK_CTRL0);
265 static AXG_MST_LRCLK_DIV(b, AUDIO_MST_B_SCLK_CTRL0);
266 static AXG_MST_LRCLK_DIV(c, AUDIO_MST_C_SCLK_CTRL0);
267 static AXG_MST_LRCLK_DIV(d, AUDIO_MST_D_SCLK_CTRL0);
268 static AXG_MST_LRCLK_DIV(e, AUDIO_MST_E_SCLK_CTRL0);
269 static AXG_MST_LRCLK_DIV(f, AUDIO_MST_F_SCLK_CTRL0);
270
271 #define AXG_MST_LRCLK(_name, _reg) \
272 AXG_AUD_TRIPHASE(mst_##_name##_lrclk, _reg, 1, 1, 3, 5, \
273 "axg_mst_"#_name"_lrclk_div", CLK_SET_RATE_PARENT)
274
275 static AXG_MST_LRCLK(a, AUDIO_MST_A_SCLK_CTRL1);
276 static AXG_MST_LRCLK(b, AUDIO_MST_B_SCLK_CTRL1);
277 static AXG_MST_LRCLK(c, AUDIO_MST_C_SCLK_CTRL1);
278 static AXG_MST_LRCLK(d, AUDIO_MST_D_SCLK_CTRL1);
279 static AXG_MST_LRCLK(e, AUDIO_MST_E_SCLK_CTRL1);
280 static AXG_MST_LRCLK(f, AUDIO_MST_F_SCLK_CTRL1);
281
282 static const char * const tdm_sclk_parent_names[] = {
283 "axg_mst_a_sclk", "axg_mst_b_sclk", "axg_mst_c_sclk",
284 "axg_mst_d_sclk", "axg_mst_e_sclk", "axg_mst_f_sclk",
285 "axg_slv_sclk0", "axg_slv_sclk1", "axg_slv_sclk2",
286 "axg_slv_sclk3", "axg_slv_sclk4", "axg_slv_sclk5",
287 "axg_slv_sclk6", "axg_slv_sclk7", "axg_slv_sclk8",
288 "axg_slv_sclk9"
289 };
290
291 #define AXG_TDM_SCLK_MUX(_name, _reg) \
292 AXG_AUD_MUX(tdm##_name##_sclk_sel, _reg, 0xf, 24, \
293 CLK_MUX_ROUND_CLOSEST, \
294 tdm_sclk_parent_names, 0)
295
296 static AXG_TDM_SCLK_MUX(in_a, AUDIO_CLK_TDMIN_A_CTRL);
297 static AXG_TDM_SCLK_MUX(in_b, AUDIO_CLK_TDMIN_B_CTRL);
298 static AXG_TDM_SCLK_MUX(in_c, AUDIO_CLK_TDMIN_C_CTRL);
299 static AXG_TDM_SCLK_MUX(in_lb, AUDIO_CLK_TDMIN_LB_CTRL);
300 static AXG_TDM_SCLK_MUX(out_a, AUDIO_CLK_TDMOUT_A_CTRL);
301 static AXG_TDM_SCLK_MUX(out_b, AUDIO_CLK_TDMOUT_B_CTRL);
302 static AXG_TDM_SCLK_MUX(out_c, AUDIO_CLK_TDMOUT_C_CTRL);
303
304 #define AXG_TDM_SCLK_PRE_EN(_name, _reg) \
305 AXG_AUD_GATE(tdm##_name##_sclk_pre_en, _reg, 31, \
306 "axg_tdm"#_name"_sclk_sel", CLK_SET_RATE_PARENT)
307
308 static AXG_TDM_SCLK_PRE_EN(in_a, AUDIO_CLK_TDMIN_A_CTRL);
309 static AXG_TDM_SCLK_PRE_EN(in_b, AUDIO_CLK_TDMIN_B_CTRL);
310 static AXG_TDM_SCLK_PRE_EN(in_c, AUDIO_CLK_TDMIN_C_CTRL);
311 static AXG_TDM_SCLK_PRE_EN(in_lb, AUDIO_CLK_TDMIN_LB_CTRL);
312 static AXG_TDM_SCLK_PRE_EN(out_a, AUDIO_CLK_TDMOUT_A_CTRL);
313 static AXG_TDM_SCLK_PRE_EN(out_b, AUDIO_CLK_TDMOUT_B_CTRL);
314 static AXG_TDM_SCLK_PRE_EN(out_c, AUDIO_CLK_TDMOUT_C_CTRL);
315
316 #define AXG_TDM_SCLK_POST_EN(_name, _reg) \
317 AXG_AUD_GATE(tdm##_name##_sclk_post_en, _reg, 30, \
318 "axg_tdm"#_name"_sclk_pre_en", CLK_SET_RATE_PARENT)
319
320 static AXG_TDM_SCLK_POST_EN(in_a, AUDIO_CLK_TDMIN_A_CTRL);
321 static AXG_TDM_SCLK_POST_EN(in_b, AUDIO_CLK_TDMIN_B_CTRL);
322 static AXG_TDM_SCLK_POST_EN(in_c, AUDIO_CLK_TDMIN_C_CTRL);
323 static AXG_TDM_SCLK_POST_EN(in_lb, AUDIO_CLK_TDMIN_LB_CTRL);
324 static AXG_TDM_SCLK_POST_EN(out_a, AUDIO_CLK_TDMOUT_A_CTRL);
325 static AXG_TDM_SCLK_POST_EN(out_b, AUDIO_CLK_TDMOUT_B_CTRL);
326 static AXG_TDM_SCLK_POST_EN(out_c, AUDIO_CLK_TDMOUT_C_CTRL);
327
328 #define AXG_TDM_SCLK(_name, _reg) \
329 struct clk_regmap axg_tdm##_name##_sclk = { \
330 .data = &(struct meson_clk_phase_data) { \
331 .ph = { \
332 .reg_off = (_reg), \
333 .shift = 29, \
334 .width = 1, \
335 }, \
336 }, \
337 .hw.init = &(struct clk_init_data) { \
338 .name = "axg_tdm"#_name"_sclk", \
339 .ops = &meson_clk_phase_ops, \
340 .parent_names = (const char *[]) \
341 { "axg_tdm"#_name"_sclk_post_en" }, \
342 .num_parents = 1, \
343 .flags = CLK_DUTY_CYCLE_PARENT | CLK_SET_RATE_PARENT, \
344 }, \
345 }
346
347 static AXG_TDM_SCLK(in_a, AUDIO_CLK_TDMIN_A_CTRL);
348 static AXG_TDM_SCLK(in_b, AUDIO_CLK_TDMIN_B_CTRL);
349 static AXG_TDM_SCLK(in_c, AUDIO_CLK_TDMIN_C_CTRL);
350 static AXG_TDM_SCLK(in_lb, AUDIO_CLK_TDMIN_LB_CTRL);
351 static AXG_TDM_SCLK(out_a, AUDIO_CLK_TDMOUT_A_CTRL);
352 static AXG_TDM_SCLK(out_b, AUDIO_CLK_TDMOUT_B_CTRL);
353 static AXG_TDM_SCLK(out_c, AUDIO_CLK_TDMOUT_C_CTRL);
354
355 static const char * const tdm_lrclk_parent_names[] = {
356 "axg_mst_a_lrclk", "axg_mst_b_lrclk", "axg_mst_c_lrclk",
357 "axg_mst_d_lrclk", "axg_mst_e_lrclk", "axg_mst_f_lrclk",
358 "axg_slv_lrclk0", "axg_slv_lrclk1", "axg_slv_lrclk2",
359 "axg_slv_lrclk3", "axg_slv_lrclk4", "axg_slv_lrclk5",
360 "axg_slv_lrclk6", "axg_slv_lrclk7", "axg_slv_lrclk8",
361 "axg_slv_lrclk9"
362 };
363
364 #define AXG_TDM_LRLCK(_name, _reg) \
365 AXG_AUD_MUX(tdm##_name##_lrclk, _reg, 0xf, 20, \
366 CLK_MUX_ROUND_CLOSEST, \
367 tdm_lrclk_parent_names, 0)
368
369 static AXG_TDM_LRLCK(in_a, AUDIO_CLK_TDMIN_A_CTRL);
370 static AXG_TDM_LRLCK(in_b, AUDIO_CLK_TDMIN_B_CTRL);
371 static AXG_TDM_LRLCK(in_c, AUDIO_CLK_TDMIN_C_CTRL);
372 static AXG_TDM_LRLCK(in_lb, AUDIO_CLK_TDMIN_LB_CTRL);
373 static AXG_TDM_LRLCK(out_a, AUDIO_CLK_TDMOUT_A_CTRL);
374 static AXG_TDM_LRLCK(out_b, AUDIO_CLK_TDMOUT_B_CTRL);
375 static AXG_TDM_LRLCK(out_c, AUDIO_CLK_TDMOUT_C_CTRL);
376
377 /*
378 * Array of all clocks provided by this provider
379 * The input clocks of the controller will be populated at runtime
380 */
381 static struct clk_hw_onecell_data axg_audio_hw_onecell_data = {
382 .hws = {
383 [AUD_CLKID_DDR_ARB] = &axg_ddr_arb.hw,
384 [AUD_CLKID_PDM] = &axg_pdm.hw,
385 [AUD_CLKID_TDMIN_A] = &axg_tdmin_a.hw,
386 [AUD_CLKID_TDMIN_B] = &axg_tdmin_b.hw,
387 [AUD_CLKID_TDMIN_C] = &axg_tdmin_c.hw,
388 [AUD_CLKID_TDMIN_LB] = &axg_tdmin_lb.hw,
389 [AUD_CLKID_TDMOUT_A] = &axg_tdmout_a.hw,
390 [AUD_CLKID_TDMOUT_B] = &axg_tdmout_b.hw,
391 [AUD_CLKID_TDMOUT_C] = &axg_tdmout_c.hw,
392 [AUD_CLKID_FRDDR_A] = &axg_frddr_a.hw,
393 [AUD_CLKID_FRDDR_B] = &axg_frddr_b.hw,
394 [AUD_CLKID_FRDDR_C] = &axg_frddr_c.hw,
395 [AUD_CLKID_TODDR_A] = &axg_toddr_a.hw,
396 [AUD_CLKID_TODDR_B] = &axg_toddr_b.hw,
397 [AUD_CLKID_TODDR_C] = &axg_toddr_c.hw,
398 [AUD_CLKID_LOOPBACK] = &axg_loopback.hw,
399 [AUD_CLKID_SPDIFIN] = &axg_spdifin.hw,
400 [AUD_CLKID_SPDIFOUT] = &axg_spdifout.hw,
401 [AUD_CLKID_RESAMPLE] = &axg_resample.hw,
402 [AUD_CLKID_POWER_DETECT] = &axg_power_detect.hw,
403 [AUD_CLKID_MST_A_MCLK_SEL] = &axg_mst_a_mclk_sel.hw,
404 [AUD_CLKID_MST_B_MCLK_SEL] = &axg_mst_b_mclk_sel.hw,
405 [AUD_CLKID_MST_C_MCLK_SEL] = &axg_mst_c_mclk_sel.hw,
406 [AUD_CLKID_MST_D_MCLK_SEL] = &axg_mst_d_mclk_sel.hw,
407 [AUD_CLKID_MST_E_MCLK_SEL] = &axg_mst_e_mclk_sel.hw,
408 [AUD_CLKID_MST_F_MCLK_SEL] = &axg_mst_f_mclk_sel.hw,
409 [AUD_CLKID_MST_A_MCLK_DIV] = &axg_mst_a_mclk_div.hw,
410 [AUD_CLKID_MST_B_MCLK_DIV] = &axg_mst_b_mclk_div.hw,
411 [AUD_CLKID_MST_C_MCLK_DIV] = &axg_mst_c_mclk_div.hw,
412 [AUD_CLKID_MST_D_MCLK_DIV] = &axg_mst_d_mclk_div.hw,
413 [AUD_CLKID_MST_E_MCLK_DIV] = &axg_mst_e_mclk_div.hw,
414 [AUD_CLKID_MST_F_MCLK_DIV] = &axg_mst_f_mclk_div.hw,
415 [AUD_CLKID_MST_A_MCLK] = &axg_mst_a_mclk.hw,
416 [AUD_CLKID_MST_B_MCLK] = &axg_mst_b_mclk.hw,
417 [AUD_CLKID_MST_C_MCLK] = &axg_mst_c_mclk.hw,
418 [AUD_CLKID_MST_D_MCLK] = &axg_mst_d_mclk.hw,
419 [AUD_CLKID_MST_E_MCLK] = &axg_mst_e_mclk.hw,
420 [AUD_CLKID_MST_F_MCLK] = &axg_mst_f_mclk.hw,
421 [AUD_CLKID_SPDIFOUT_CLK_SEL] = &axg_spdifout_clk_sel.hw,
422 [AUD_CLKID_SPDIFOUT_CLK_DIV] = &axg_spdifout_clk_div.hw,
423 [AUD_CLKID_SPDIFOUT_CLK] = &axg_spdifout_clk.hw,
424 [AUD_CLKID_SPDIFIN_CLK_SEL] = &axg_spdifin_clk_sel.hw,
425 [AUD_CLKID_SPDIFIN_CLK_DIV] = &axg_spdifin_clk_div.hw,
426 [AUD_CLKID_SPDIFIN_CLK] = &axg_spdifin_clk.hw,
427 [AUD_CLKID_PDM_DCLK_SEL] = &axg_pdm_dclk_sel.hw,
428 [AUD_CLKID_PDM_DCLK_DIV] = &axg_pdm_dclk_div.hw,
429 [AUD_CLKID_PDM_DCLK] = &axg_pdm_dclk.hw,
430 [AUD_CLKID_PDM_SYSCLK_SEL] = &axg_pdm_sysclk_sel.hw,
431 [AUD_CLKID_PDM_SYSCLK_DIV] = &axg_pdm_sysclk_div.hw,
432 [AUD_CLKID_PDM_SYSCLK] = &axg_pdm_sysclk.hw,
433 [AUD_CLKID_MST_A_SCLK_PRE_EN] = &axg_mst_a_sclk_pre_en.hw,
434 [AUD_CLKID_MST_B_SCLK_PRE_EN] = &axg_mst_b_sclk_pre_en.hw,
435 [AUD_CLKID_MST_C_SCLK_PRE_EN] = &axg_mst_c_sclk_pre_en.hw,
436 [AUD_CLKID_MST_D_SCLK_PRE_EN] = &axg_mst_d_sclk_pre_en.hw,
437 [AUD_CLKID_MST_E_SCLK_PRE_EN] = &axg_mst_e_sclk_pre_en.hw,
438 [AUD_CLKID_MST_F_SCLK_PRE_EN] = &axg_mst_f_sclk_pre_en.hw,
439 [AUD_CLKID_MST_A_SCLK_DIV] = &axg_mst_a_sclk_div.hw,
440 [AUD_CLKID_MST_B_SCLK_DIV] = &axg_mst_b_sclk_div.hw,
441 [AUD_CLKID_MST_C_SCLK_DIV] = &axg_mst_c_sclk_div.hw,
442 [AUD_CLKID_MST_D_SCLK_DIV] = &axg_mst_d_sclk_div.hw,
443 [AUD_CLKID_MST_E_SCLK_DIV] = &axg_mst_e_sclk_div.hw,
444 [AUD_CLKID_MST_F_SCLK_DIV] = &axg_mst_f_sclk_div.hw,
445 [AUD_CLKID_MST_A_SCLK_POST_EN] = &axg_mst_a_sclk_post_en.hw,
446 [AUD_CLKID_MST_B_SCLK_POST_EN] = &axg_mst_b_sclk_post_en.hw,
447 [AUD_CLKID_MST_C_SCLK_POST_EN] = &axg_mst_c_sclk_post_en.hw,
448 [AUD_CLKID_MST_D_SCLK_POST_EN] = &axg_mst_d_sclk_post_en.hw,
449 [AUD_CLKID_MST_E_SCLK_POST_EN] = &axg_mst_e_sclk_post_en.hw,
450 [AUD_CLKID_MST_F_SCLK_POST_EN] = &axg_mst_f_sclk_post_en.hw,
451 [AUD_CLKID_MST_A_SCLK] = &axg_mst_a_sclk.hw,
452 [AUD_CLKID_MST_B_SCLK] = &axg_mst_b_sclk.hw,
453 [AUD_CLKID_MST_C_SCLK] = &axg_mst_c_sclk.hw,
454 [AUD_CLKID_MST_D_SCLK] = &axg_mst_d_sclk.hw,
455 [AUD_CLKID_MST_E_SCLK] = &axg_mst_e_sclk.hw,
456 [AUD_CLKID_MST_F_SCLK] = &axg_mst_f_sclk.hw,
457 [AUD_CLKID_MST_A_LRCLK_DIV] = &axg_mst_a_lrclk_div.hw,
458 [AUD_CLKID_MST_B_LRCLK_DIV] = &axg_mst_b_lrclk_div.hw,
459 [AUD_CLKID_MST_C_LRCLK_DIV] = &axg_mst_c_lrclk_div.hw,
460 [AUD_CLKID_MST_D_LRCLK_DIV] = &axg_mst_d_lrclk_div.hw,
461 [AUD_CLKID_MST_E_LRCLK_DIV] = &axg_mst_e_lrclk_div.hw,
462 [AUD_CLKID_MST_F_LRCLK_DIV] = &axg_mst_f_lrclk_div.hw,
463 [AUD_CLKID_MST_A_LRCLK] = &axg_mst_a_lrclk.hw,
464 [AUD_CLKID_MST_B_LRCLK] = &axg_mst_b_lrclk.hw,
465 [AUD_CLKID_MST_C_LRCLK] = &axg_mst_c_lrclk.hw,
466 [AUD_CLKID_MST_D_LRCLK] = &axg_mst_d_lrclk.hw,
467 [AUD_CLKID_MST_E_LRCLK] = &axg_mst_e_lrclk.hw,
468 [AUD_CLKID_MST_F_LRCLK] = &axg_mst_f_lrclk.hw,
469 [AUD_CLKID_TDMIN_A_SCLK_SEL] = &axg_tdmin_a_sclk_sel.hw,
470 [AUD_CLKID_TDMIN_B_SCLK_SEL] = &axg_tdmin_b_sclk_sel.hw,
471 [AUD_CLKID_TDMIN_C_SCLK_SEL] = &axg_tdmin_c_sclk_sel.hw,
472 [AUD_CLKID_TDMIN_LB_SCLK_SEL] = &axg_tdmin_lb_sclk_sel.hw,
473 [AUD_CLKID_TDMOUT_A_SCLK_SEL] = &axg_tdmout_a_sclk_sel.hw,
474 [AUD_CLKID_TDMOUT_B_SCLK_SEL] = &axg_tdmout_b_sclk_sel.hw,
475 [AUD_CLKID_TDMOUT_C_SCLK_SEL] = &axg_tdmout_c_sclk_sel.hw,
476 [AUD_CLKID_TDMIN_A_SCLK_PRE_EN] = &axg_tdmin_a_sclk_pre_en.hw,
477 [AUD_CLKID_TDMIN_B_SCLK_PRE_EN] = &axg_tdmin_b_sclk_pre_en.hw,
478 [AUD_CLKID_TDMIN_C_SCLK_PRE_EN] = &axg_tdmin_c_sclk_pre_en.hw,
479 [AUD_CLKID_TDMIN_LB_SCLK_PRE_EN] = &axg_tdmin_lb_sclk_pre_en.hw,
480 [AUD_CLKID_TDMOUT_A_SCLK_PRE_EN] = &axg_tdmout_a_sclk_pre_en.hw,
481 [AUD_CLKID_TDMOUT_B_SCLK_PRE_EN] = &axg_tdmout_b_sclk_pre_en.hw,
482 [AUD_CLKID_TDMOUT_C_SCLK_PRE_EN] = &axg_tdmout_c_sclk_pre_en.hw,
483 [AUD_CLKID_TDMIN_A_SCLK_POST_EN] = &axg_tdmin_a_sclk_post_en.hw,
484 [AUD_CLKID_TDMIN_B_SCLK_POST_EN] = &axg_tdmin_b_sclk_post_en.hw,
485 [AUD_CLKID_TDMIN_C_SCLK_POST_EN] = &axg_tdmin_c_sclk_post_en.hw,
486 [AUD_CLKID_TDMIN_LB_SCLK_POST_EN] = &axg_tdmin_lb_sclk_post_en.hw,
487 [AUD_CLKID_TDMOUT_A_SCLK_POST_EN] = &axg_tdmout_a_sclk_post_en.hw,
488 [AUD_CLKID_TDMOUT_B_SCLK_POST_EN] = &axg_tdmout_b_sclk_post_en.hw,
489 [AUD_CLKID_TDMOUT_C_SCLK_POST_EN] = &axg_tdmout_c_sclk_post_en.hw,
490 [AUD_CLKID_TDMIN_A_SCLK] = &axg_tdmin_a_sclk.hw,
491 [AUD_CLKID_TDMIN_B_SCLK] = &axg_tdmin_b_sclk.hw,
492 [AUD_CLKID_TDMIN_C_SCLK] = &axg_tdmin_c_sclk.hw,
493 [AUD_CLKID_TDMIN_LB_SCLK] = &axg_tdmin_lb_sclk.hw,
494 [AUD_CLKID_TDMOUT_A_SCLK] = &axg_tdmout_a_sclk.hw,
495 [AUD_CLKID_TDMOUT_B_SCLK] = &axg_tdmout_b_sclk.hw,
496 [AUD_CLKID_TDMOUT_C_SCLK] = &axg_tdmout_c_sclk.hw,
497 [AUD_CLKID_TDMIN_A_LRCLK] = &axg_tdmin_a_lrclk.hw,
498 [AUD_CLKID_TDMIN_B_LRCLK] = &axg_tdmin_b_lrclk.hw,
499 [AUD_CLKID_TDMIN_C_LRCLK] = &axg_tdmin_c_lrclk.hw,
500 [AUD_CLKID_TDMIN_LB_LRCLK] = &axg_tdmin_lb_lrclk.hw,
501 [AUD_CLKID_TDMOUT_A_LRCLK] = &axg_tdmout_a_lrclk.hw,
502 [AUD_CLKID_TDMOUT_B_LRCLK] = &axg_tdmout_b_lrclk.hw,
503 [AUD_CLKID_TDMOUT_C_LRCLK] = &axg_tdmout_c_lrclk.hw,
504 [NR_CLKS] = NULL,
505 },
506 .num = NR_CLKS,
507 };
508
509 /* Convenience table to populate regmap in .probe() */
510 static struct clk_regmap *const axg_audio_clk_regmaps[] = {
511 &axg_ddr_arb,
512 &axg_pdm,
513 &axg_tdmin_a,
514 &axg_tdmin_b,
515 &axg_tdmin_c,
516 &axg_tdmin_lb,
517 &axg_tdmout_a,
518 &axg_tdmout_b,
519 &axg_tdmout_c,
520 &axg_frddr_a,
521 &axg_frddr_b,
522 &axg_frddr_c,
523 &axg_toddr_a,
524 &axg_toddr_b,
525 &axg_toddr_c,
526 &axg_loopback,
527 &axg_spdifin,
528 &axg_spdifout,
529 &axg_resample,
530 &axg_power_detect,
531 &axg_mst_a_mclk_sel,
532 &axg_mst_b_mclk_sel,
533 &axg_mst_c_mclk_sel,
534 &axg_mst_d_mclk_sel,
535 &axg_mst_e_mclk_sel,
536 &axg_mst_f_mclk_sel,
537 &axg_mst_a_mclk_div,
538 &axg_mst_b_mclk_div,
539 &axg_mst_c_mclk_div,
540 &axg_mst_d_mclk_div,
541 &axg_mst_e_mclk_div,
542 &axg_mst_f_mclk_div,
543 &axg_mst_a_mclk,
544 &axg_mst_b_mclk,
545 &axg_mst_c_mclk,
546 &axg_mst_d_mclk,
547 &axg_mst_e_mclk,
548 &axg_mst_f_mclk,
549 &axg_spdifout_clk_sel,
550 &axg_spdifout_clk_div,
551 &axg_spdifout_clk,
552 &axg_spdifin_clk_sel,
553 &axg_spdifin_clk_div,
554 &axg_spdifin_clk,
555 &axg_pdm_dclk_sel,
556 &axg_pdm_dclk_div,
557 &axg_pdm_dclk,
558 &axg_pdm_sysclk_sel,
559 &axg_pdm_sysclk_div,
560 &axg_pdm_sysclk,
561 &axg_mst_a_sclk_pre_en,
562 &axg_mst_b_sclk_pre_en,
563 &axg_mst_c_sclk_pre_en,
564 &axg_mst_d_sclk_pre_en,
565 &axg_mst_e_sclk_pre_en,
566 &axg_mst_f_sclk_pre_en,
567 &axg_mst_a_sclk_div,
568 &axg_mst_b_sclk_div,
569 &axg_mst_c_sclk_div,
570 &axg_mst_d_sclk_div,
571 &axg_mst_e_sclk_div,
572 &axg_mst_f_sclk_div,
573 &axg_mst_a_sclk_post_en,
574 &axg_mst_b_sclk_post_en,
575 &axg_mst_c_sclk_post_en,
576 &axg_mst_d_sclk_post_en,
577 &axg_mst_e_sclk_post_en,
578 &axg_mst_f_sclk_post_en,
579 &axg_mst_a_sclk,
580 &axg_mst_b_sclk,
581 &axg_mst_c_sclk,
582 &axg_mst_d_sclk,
583 &axg_mst_e_sclk,
584 &axg_mst_f_sclk,
585 &axg_mst_a_lrclk_div,
586 &axg_mst_b_lrclk_div,
587 &axg_mst_c_lrclk_div,
588 &axg_mst_d_lrclk_div,
589 &axg_mst_e_lrclk_div,
590 &axg_mst_f_lrclk_div,
591 &axg_mst_a_lrclk,
592 &axg_mst_b_lrclk,
593 &axg_mst_c_lrclk,
594 &axg_mst_d_lrclk,
595 &axg_mst_e_lrclk,
596 &axg_mst_f_lrclk,
597 &axg_tdmin_a_sclk_sel,
598 &axg_tdmin_b_sclk_sel,
599 &axg_tdmin_c_sclk_sel,
600 &axg_tdmin_lb_sclk_sel,
601 &axg_tdmout_a_sclk_sel,
602 &axg_tdmout_b_sclk_sel,
603 &axg_tdmout_c_sclk_sel,
604 &axg_tdmin_a_sclk_pre_en,
605 &axg_tdmin_b_sclk_pre_en,
606 &axg_tdmin_c_sclk_pre_en,
607 &axg_tdmin_lb_sclk_pre_en,
608 &axg_tdmout_a_sclk_pre_en,
609 &axg_tdmout_b_sclk_pre_en,
610 &axg_tdmout_c_sclk_pre_en,
611 &axg_tdmin_a_sclk_post_en,
612 &axg_tdmin_b_sclk_post_en,
613 &axg_tdmin_c_sclk_post_en,
614 &axg_tdmin_lb_sclk_post_en,
615 &axg_tdmout_a_sclk_post_en,
616 &axg_tdmout_b_sclk_post_en,
617 &axg_tdmout_c_sclk_post_en,
618 &axg_tdmin_a_sclk,
619 &axg_tdmin_b_sclk,
620 &axg_tdmin_c_sclk,
621 &axg_tdmin_lb_sclk,
622 &axg_tdmout_a_sclk,
623 &axg_tdmout_b_sclk,
624 &axg_tdmout_c_sclk,
625 &axg_tdmin_a_lrclk,
626 &axg_tdmin_b_lrclk,
627 &axg_tdmin_c_lrclk,
628 &axg_tdmin_lb_lrclk,
629 &axg_tdmout_a_lrclk,
630 &axg_tdmout_b_lrclk,
631 &axg_tdmout_c_lrclk,
632 };
633
634 static int devm_clk_get_enable(struct device *dev, char *id)
635 {
636 struct clk *clk;
637 int ret;
638
639 clk = devm_clk_get(dev, id);
640 if (IS_ERR(clk)) {
641 ret = PTR_ERR(clk);
642 if (ret != -EPROBE_DEFER)
643 dev_err(dev, "failed to get %s", id);
644 return ret;
645 }
646
647 ret = clk_prepare_enable(clk);
648 if (ret) {
649 dev_err(dev, "failed to enable %s", id);
650 return ret;
651 }
652
653 ret = devm_add_action_or_reset(dev,
654 (void(*)(void *))clk_disable_unprepare,
655 clk);
656 if (ret) {
657 dev_err(dev, "failed to add reset action on %s", id);
658 return ret;
659 }
660
661 return 0;
662 }
663
664 static int axg_register_clk_hw_input(struct device *dev,
665 const char *name,
666 unsigned int clkid)
667 {
668 char *clk_name;
669 struct clk_hw *hw;
670 int err = 0;
671
672 clk_name = kasprintf(GFP_KERNEL, "axg_%s", name);
673 if (!clk_name)
674 return -ENOMEM;
675
676 hw = meson_clk_hw_register_input(dev, name, clk_name, 0);
677 if (IS_ERR(hw)) {
678 /* It is ok if an input clock is missing */
679 if (PTR_ERR(hw) == -ENOENT) {
680 dev_dbg(dev, "%s not provided", name);
681 } else {
682 err = PTR_ERR(hw);
683 if (err != -EPROBE_DEFER)
684 dev_err(dev, "failed to get %s clock", name);
685 }
686 } else {
687 axg_audio_hw_onecell_data.hws[clkid] = hw;
688 }
689
690 kfree(clk_name);
691 return err;
692 }
693
694 static int axg_register_clk_hw_inputs(struct device *dev,
695 const char *basename,
696 unsigned int count,
697 unsigned int clkid)
698 {
699 char *name;
700 int i, ret;
701
702 for (i = 0; i < count; i++) {
703 name = kasprintf(GFP_KERNEL, "%s%d", basename, i);
704 if (!name)
705 return -ENOMEM;
706
707 ret = axg_register_clk_hw_input(dev, name, clkid + i);
708 kfree(name);
709 if (ret)
710 return ret;
711 }
712
713 return 0;
714 }
715
716 static const struct regmap_config axg_audio_regmap_cfg = {
717 .reg_bits = 32,
718 .val_bits = 32,
719 .reg_stride = 4,
720 .max_register = AUDIO_CLK_PDMIN_CTRL1,
721 };
722
723 static int axg_audio_clkc_probe(struct platform_device *pdev)
724 {
725 struct device *dev = &pdev->dev;
726 struct regmap *map;
727 struct resource *res;
728 void __iomem *regs;
729 struct clk_hw *hw;
730 int ret, i;
731
732 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
733 regs = devm_ioremap_resource(dev, res);
734 if (IS_ERR(regs))
735 return PTR_ERR(regs);
736
737 map = devm_regmap_init_mmio(dev, regs, &axg_audio_regmap_cfg);
738 if (IS_ERR(map)) {
739 dev_err(dev, "failed to init regmap: %ld\n", PTR_ERR(map));
740 return PTR_ERR(map);
741 }
742
743 /* Get the mandatory peripheral clock */
744 ret = devm_clk_get_enable(dev, "pclk");
745 if (ret)
746 return ret;
747
748 ret = device_reset(dev);
749 if (ret) {
750 dev_err(dev, "failed to reset device\n");
751 return ret;
752 }
753
754 /* Register the peripheral input clock */
755 hw = meson_clk_hw_register_input(dev, "pclk", "axg_audio_pclk", 0);
756 if (IS_ERR(hw))
757 return PTR_ERR(hw);
758
759 axg_audio_hw_onecell_data.hws[AUD_CLKID_PCLK] = hw;
760
761 /* Register optional input master clocks */
762 ret = axg_register_clk_hw_inputs(dev, "mst_in",
763 AXG_MST_IN_COUNT,
764 AUD_CLKID_MST0);
765 if (ret)
766 return ret;
767
768 /* Register optional input slave sclks */
769 ret = axg_register_clk_hw_inputs(dev, "slv_sclk",
770 AXG_SLV_SCLK_COUNT,
771 AUD_CLKID_SLV_SCLK0);
772 if (ret)
773 return ret;
774
775 /* Register optional input slave lrclks */
776 ret = axg_register_clk_hw_inputs(dev, "slv_lrclk",
777 AXG_SLV_LRCLK_COUNT,
778 AUD_CLKID_SLV_LRCLK0);
779 if (ret)
780 return ret;
781
782 /* Populate regmap for the regmap backed clocks */
783 for (i = 0; i < ARRAY_SIZE(axg_audio_clk_regmaps); i++)
784 axg_audio_clk_regmaps[i]->map = map;
785
786 /* Take care to skip the registered input clocks */
787 for (i = AUD_CLKID_DDR_ARB; i < axg_audio_hw_onecell_data.num; i++) {
788 hw = axg_audio_hw_onecell_data.hws[i];
789 /* array might be sparse */
790 if (!hw)
791 continue;
792
793 ret = devm_clk_hw_register(dev, hw);
794 if (ret) {
795 dev_err(dev, "failed to register clock %s\n",
796 hw->init->name);
797 return ret;
798 }
799 }
800
801 return devm_of_clk_add_hw_provider(dev, of_clk_hw_onecell_get,
802 &axg_audio_hw_onecell_data);
803 }
804
805 static const struct of_device_id clkc_match_table[] = {
806 { .compatible = "amlogic,axg-audio-clkc" },
807 {}
808 };
809 MODULE_DEVICE_TABLE(of, clkc_match_table);
810
811 static struct platform_driver axg_audio_driver = {
812 .probe = axg_audio_clkc_probe,
813 .driver = {
814 .name = "axg-audio-clkc",
815 .of_match_table = clkc_match_table,
816 },
817 };
818 module_platform_driver(axg_audio_driver);
819
820 MODULE_DESCRIPTION("Amlogic A113x Audio Clock driver");
821 MODULE_AUTHOR("Jerome Brunet <jbrunet@baylibre.com>");
822 MODULE_LICENSE("GPL v2");
Ubuntu combined Linux kernel mirror