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5
6#include <linux/module.h>
7#include <linux/of_platform.h>
8#include <linux/regmap.h>
9#include <sound/soc.h>
10#include <sound/soc-dai.h>
11
12#include "axg-tdm-formatter.h"
13
14#define TDMIN_CTRL 0x00
15#define TDMIN_CTRL_ENABLE BIT(31)
16#define TDMIN_CTRL_I2S_MODE BIT(30)
17#define TDMIN_CTRL_RST_OUT BIT(29)
18#define TDMIN_CTRL_RST_IN BIT(28)
19#define TDMIN_CTRL_WS_INV BIT(25)
20#define TDMIN_CTRL_SEL_SHIFT 20
21#define TDMIN_CTRL_IN_BIT_SKEW_MASK GENMASK(18, 16)
22#define TDMIN_CTRL_IN_BIT_SKEW(x) ((x) << 16)
23#define TDMIN_CTRL_LSB_FIRST BIT(5)
24#define TDMIN_CTRL_BITNUM_MASK GENMASK(4, 0)
25#define TDMIN_CTRL_BITNUM(x) ((x) << 0)
26#define TDMIN_SWAP 0x04
27#define TDMIN_MASK0 0x08
28#define TDMIN_MASK1 0x0c
29#define TDMIN_MASK2 0x10
30#define TDMIN_MASK3 0x14
31#define TDMIN_STAT 0x18
32#define TDMIN_MUTE_VAL 0x1c
33#define TDMIN_MUTE0 0x20
34#define TDMIN_MUTE1 0x24
35#define TDMIN_MUTE2 0x28
36#define TDMIN_MUTE3 0x2c
37
38static const struct regmap_config axg_tdmin_regmap_cfg = {
39 .reg_bits = 32,
40 .val_bits = 32,
41 .reg_stride = 4,
42 .max_register = TDMIN_MUTE3,
43};
44
45static const char * const axg_tdmin_sel_texts[] = {
46 "IN 0", "IN 1", "IN 2", "IN 3", "IN 4", "IN 5",
47};
48
49
50static SOC_ENUM_SINGLE_DECL(axg_tdmin_sel_enum, TDMIN_CTRL,
51 TDMIN_CTRL_SEL_SHIFT, axg_tdmin_sel_texts);
52
53static const struct snd_kcontrol_new axg_tdmin_in_mux =
54 SOC_DAPM_ENUM("Input Source", axg_tdmin_sel_enum);
55
56static struct snd_soc_dai *
57axg_tdmin_get_be(struct snd_soc_dapm_widget *w)
58{
59 struct snd_soc_dapm_path *p = NULL;
60 struct snd_soc_dai *be;
61
62 snd_soc_dapm_widget_for_each_source_path(w, p) {
63 if (!p->connect)
64 continue;
65
66 if (p->source->id == snd_soc_dapm_dai_out)
67 return (struct snd_soc_dai *)p->source->priv;
68
69 be = axg_tdmin_get_be(p->source);
70 if (be)
71 return be;
72 }
73
74 return NULL;
75}
76
77static struct axg_tdm_stream *
78axg_tdmin_get_tdm_stream(struct snd_soc_dapm_widget *w)
79{
80 struct snd_soc_dai *be = axg_tdmin_get_be(w);
81
82 if (!be)
83 return NULL;
84
85 return be->capture_dma_data;
86}
87
88static void axg_tdmin_enable(struct regmap *map)
89{
90
91 regmap_update_bits(map, TDMIN_CTRL,
92 TDMIN_CTRL_RST_OUT | TDMIN_CTRL_RST_IN, 0);
93
94
95 regmap_update_bits(map, TDMIN_CTRL,
96 TDMIN_CTRL_RST_OUT, TDMIN_CTRL_RST_OUT);
97 regmap_update_bits(map, TDMIN_CTRL,
98 TDMIN_CTRL_RST_IN, TDMIN_CTRL_RST_IN);
99
100
101 regmap_update_bits(map, TDMIN_CTRL,
102 TDMIN_CTRL_ENABLE, TDMIN_CTRL_ENABLE);
103}
104
105static void axg_tdmin_disable(struct regmap *map)
106{
107 regmap_update_bits(map, TDMIN_CTRL, TDMIN_CTRL_ENABLE, 0);
108}
109
110static int axg_tdmin_prepare(struct regmap *map,
111 const struct axg_tdm_formatter_hw *quirks,
112 struct axg_tdm_stream *ts)
113{
114 unsigned int val, skew = quirks->skew_offset;
115
116
117 switch (ts->iface->fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
118 case SND_SOC_DAIFMT_I2S:
119 case SND_SOC_DAIFMT_DSP_A:
120 skew += 1;
121 break;
122
123 case SND_SOC_DAIFMT_LEFT_J:
124 case SND_SOC_DAIFMT_DSP_B:
125 break;
126
127 default:
128 pr_err("Unsupported format: %u\n",
129 ts->iface->fmt & SND_SOC_DAIFMT_FORMAT_MASK);
130 return -EINVAL;
131 }
132
133 val = TDMIN_CTRL_IN_BIT_SKEW(skew);
134
135
136 switch (ts->iface->fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
137 case SND_SOC_DAIFMT_I2S:
138 case SND_SOC_DAIFMT_LEFT_J:
139 case SND_SOC_DAIFMT_RIGHT_J:
140 val |= TDMIN_CTRL_I2S_MODE;
141 break;
142 }
143
144
145 if (axg_tdm_lrclk_invert(ts->iface->fmt))
146 val |= TDMIN_CTRL_WS_INV;
147
148
149 val |= TDMIN_CTRL_BITNUM(ts->iface->slot_width - 1);
150
151
152
153
154
155 regmap_update_bits(map, TDMIN_CTRL,
156 (TDMIN_CTRL_IN_BIT_SKEW_MASK | TDMIN_CTRL_WS_INV |
157 TDMIN_CTRL_I2S_MODE | TDMIN_CTRL_LSB_FIRST |
158 TDMIN_CTRL_BITNUM_MASK), val);
159
160
161 regmap_write(map, TDMIN_SWAP, 0x76543210);
162
163 return axg_tdm_formatter_set_channel_masks(map, ts, TDMIN_MASK0);
164}
165
166static const struct snd_soc_dapm_widget axg_tdmin_dapm_widgets[] = {
167 SND_SOC_DAPM_AIF_IN("IN 0", NULL, 0, SND_SOC_NOPM, 0, 0),
168 SND_SOC_DAPM_AIF_IN("IN 1", NULL, 0, SND_SOC_NOPM, 0, 0),
169 SND_SOC_DAPM_AIF_IN("IN 2", NULL, 0, SND_SOC_NOPM, 0, 0),
170 SND_SOC_DAPM_AIF_IN("IN 3", NULL, 0, SND_SOC_NOPM, 0, 0),
171 SND_SOC_DAPM_AIF_IN("IN 4", NULL, 0, SND_SOC_NOPM, 0, 0),
172 SND_SOC_DAPM_AIF_IN("IN 5", NULL, 0, SND_SOC_NOPM, 0, 0),
173 SND_SOC_DAPM_MUX("SRC SEL", SND_SOC_NOPM, 0, 0, &axg_tdmin_in_mux),
174 SND_SOC_DAPM_PGA_E("DEC", SND_SOC_NOPM, 0, 0, NULL, 0,
175 axg_tdm_formatter_event,
176 (SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_PRE_PMD)),
177 SND_SOC_DAPM_AIF_OUT("OUT", NULL, 0, SND_SOC_NOPM, 0, 0),
178};
179
180static const struct snd_soc_dapm_route axg_tdmin_dapm_routes[] = {
181 { "SRC SEL", "IN 0", "IN 0" },
182 { "SRC SEL", "IN 1", "IN 1" },
183 { "SRC SEL", "IN 2", "IN 2" },
184 { "SRC SEL", "IN 3", "IN 3" },
185 { "SRC SEL", "IN 4", "IN 4" },
186 { "SRC SEL", "IN 5", "IN 5" },
187 { "DEC", NULL, "SRC SEL" },
188 { "OUT", NULL, "DEC" },
189};
190
191static const struct snd_soc_component_driver axg_tdmin_component_drv = {
192 .dapm_widgets = axg_tdmin_dapm_widgets,
193 .num_dapm_widgets = ARRAY_SIZE(axg_tdmin_dapm_widgets),
194 .dapm_routes = axg_tdmin_dapm_routes,
195 .num_dapm_routes = ARRAY_SIZE(axg_tdmin_dapm_routes),
196};
197
198static const struct axg_tdm_formatter_ops axg_tdmin_ops = {
199 .get_stream = axg_tdmin_get_tdm_stream,
200 .prepare = axg_tdmin_prepare,
201 .enable = axg_tdmin_enable,
202 .disable = axg_tdmin_disable,
203};
204
205static const struct axg_tdm_formatter_driver axg_tdmin_drv = {
206 .component_drv = &axg_tdmin_component_drv,
207 .regmap_cfg = &axg_tdmin_regmap_cfg,
208 .ops = &axg_tdmin_ops,
209 .quirks = &(const struct axg_tdm_formatter_hw) {
210 .invert_sclk = false,
211 .skew_offset = 2,
212 },
213};
214
215static const struct of_device_id axg_tdmin_of_match[] = {
216 {
217 .compatible = "amlogic,axg-tdmin",
218 .data = &axg_tdmin_drv,
219 }, {}
220};
221MODULE_DEVICE_TABLE(of, axg_tdmin_of_match);
222
223static struct platform_driver axg_tdmin_pdrv = {
224 .probe = axg_tdm_formatter_probe,
225 .driver = {
226 .name = "axg-tdmin",
227 .of_match_table = axg_tdmin_of_match,
228 },
229};
230module_platform_driver(axg_tdmin_pdrv);
231
232MODULE_DESCRIPTION("Amlogic AXG TDM input formatter driver");
233MODULE_AUTHOR("Jerome Brunet <jbrunet@baylibre.com>");
234MODULE_LICENSE("GPL v2");
235
