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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 TDMOUT_CTRL0 0x00
15#define TDMOUT_CTRL0_BITNUM_MASK GENMASK(4, 0)
16#define TDMOUT_CTRL0_BITNUM(x) ((x) << 0)
17#define TDMOUT_CTRL0_SLOTNUM_MASK GENMASK(9, 5)
18#define TDMOUT_CTRL0_SLOTNUM(x) ((x) << 5)
19#define TDMOUT_CTRL0_INIT_BITNUM_MASK GENMASK(19, 15)
20#define TDMOUT_CTRL0_INIT_BITNUM(x) ((x) << 15)
21#define TDMOUT_CTRL0_ENABLE BIT(31)
22#define TDMOUT_CTRL0_RST_OUT BIT(29)
23#define TDMOUT_CTRL0_RST_IN BIT(28)
24#define TDMOUT_CTRL1 0x04
25#define TDMOUT_CTRL1_TYPE_MASK GENMASK(6, 4)
26#define TDMOUT_CTRL1_TYPE(x) ((x) << 4)
27#define TDMOUT_CTRL1_MSB_POS_MASK GENMASK(12, 8)
28#define TDMOUT_CTRL1_MSB_POS(x) ((x) << 8)
29#define TDMOUT_CTRL1_SEL_SHIFT 24
30#define TDMOUT_CTRL1_GAIN_EN 26
31#define TDMOUT_CTRL1_WS_INV BIT(28)
32#define TDMOUT_SWAP 0x08
33#define TDMOUT_MASK0 0x0c
34#define TDMOUT_MASK1 0x10
35#define TDMOUT_MASK2 0x14
36#define TDMOUT_MASK3 0x18
37#define TDMOUT_STAT 0x1c
38#define TDMOUT_GAIN0 0x20
39#define TDMOUT_GAIN1 0x24
40#define TDMOUT_MUTE_VAL 0x28
41#define TDMOUT_MUTE0 0x2c
42#define TDMOUT_MUTE1 0x30
43#define TDMOUT_MUTE2 0x34
44#define TDMOUT_MUTE3 0x38
45#define TDMOUT_MASK_VAL 0x3c
46
47static const struct regmap_config axg_tdmout_regmap_cfg = {
48 .reg_bits = 32,
49 .val_bits = 32,
50 .reg_stride = 4,
51 .max_register = TDMOUT_MASK_VAL,
52};
53
54static const struct snd_kcontrol_new axg_tdmout_controls[] = {
55 SOC_DOUBLE("Lane 0 Volume", TDMOUT_GAIN0, 0, 8, 255, 0),
56 SOC_DOUBLE("Lane 1 Volume", TDMOUT_GAIN0, 16, 24, 255, 0),
57 SOC_DOUBLE("Lane 2 Volume", TDMOUT_GAIN1, 0, 8, 255, 0),
58 SOC_DOUBLE("Lane 3 Volume", TDMOUT_GAIN1, 16, 24, 255, 0),
59 SOC_SINGLE("Gain Enable Switch", TDMOUT_CTRL1,
60 TDMOUT_CTRL1_GAIN_EN, 1, 0),
61};
62
63static const char * const tdmout_sel_texts[] = {
64 "IN 0", "IN 1", "IN 2",
65};
66
67static SOC_ENUM_SINGLE_DECL(axg_tdmout_sel_enum, TDMOUT_CTRL1,
68 TDMOUT_CTRL1_SEL_SHIFT, tdmout_sel_texts);
69
70static const struct snd_kcontrol_new axg_tdmout_in_mux =
71 SOC_DAPM_ENUM("Input Source", axg_tdmout_sel_enum);
72
73static struct snd_soc_dai *
74axg_tdmout_get_be(struct snd_soc_dapm_widget *w)
75{
76 struct snd_soc_dapm_path *p = NULL;
77 struct snd_soc_dai *be;
78
79 snd_soc_dapm_widget_for_each_sink_path(w, p) {
80 if (!p->connect)
81 continue;
82
83 if (p->sink->id == snd_soc_dapm_dai_in)
84 return (struct snd_soc_dai *)p->sink->priv;
85
86 be = axg_tdmout_get_be(p->sink);
87 if (be)
88 return be;
89 }
90
91 return NULL;
92}
93
94static struct axg_tdm_stream *
95axg_tdmout_get_tdm_stream(struct snd_soc_dapm_widget *w)
96{
97 struct snd_soc_dai *be = axg_tdmout_get_be(w);
98
99 if (!be)
100 return NULL;
101
102 return be->playback_dma_data;
103}
104
105static void axg_tdmout_enable(struct regmap *map)
106{
107
108 regmap_update_bits(map, TDMOUT_CTRL0,
109 TDMOUT_CTRL0_RST_OUT | TDMOUT_CTRL0_RST_IN, 0);
110
111
112 regmap_update_bits(map, TDMOUT_CTRL0,
113 TDMOUT_CTRL0_RST_OUT, TDMOUT_CTRL0_RST_OUT);
114 regmap_update_bits(map, TDMOUT_CTRL0,
115 TDMOUT_CTRL0_RST_IN, TDMOUT_CTRL0_RST_IN);
116
117
118 regmap_update_bits(map, TDMOUT_CTRL0,
119 TDMOUT_CTRL0_ENABLE, TDMOUT_CTRL0_ENABLE);
120}
121
122static void axg_tdmout_disable(struct regmap *map)
123{
124 regmap_update_bits(map, TDMOUT_CTRL0, TDMOUT_CTRL0_ENABLE, 0);
125}
126
127static int axg_tdmout_prepare(struct regmap *map,
128 const struct axg_tdm_formatter_hw *quirks,
129 struct axg_tdm_stream *ts)
130{
131 unsigned int val, skew = quirks->skew_offset;
132
133
134 switch (ts->iface->fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
135 case SND_SOC_DAIFMT_I2S:
136 case SND_SOC_DAIFMT_DSP_A:
137 break;
138
139 case SND_SOC_DAIFMT_LEFT_J:
140 case SND_SOC_DAIFMT_RIGHT_J:
141 case SND_SOC_DAIFMT_DSP_B:
142 skew += 1;
143 break;
144
145 default:
146 pr_err("Unsupported format: %u\n",
147 ts->iface->fmt & SND_SOC_DAIFMT_FORMAT_MASK);
148 return -EINVAL;
149 }
150
151 val = TDMOUT_CTRL0_INIT_BITNUM(skew);
152
153
154 val |= TDMOUT_CTRL0_BITNUM(ts->iface->slot_width - 1);
155
156
157 val |= TDMOUT_CTRL0_SLOTNUM(ts->iface->slots - 1);
158
159 regmap_update_bits(map, TDMOUT_CTRL0,
160 TDMOUT_CTRL0_INIT_BITNUM_MASK |
161 TDMOUT_CTRL0_BITNUM_MASK |
162 TDMOUT_CTRL0_SLOTNUM_MASK, val);
163
164
165 val = TDMOUT_CTRL1_MSB_POS(ts->width - 1);
166
167
168 switch (ts->physical_width) {
169 case 8:
170
171 val |= TDMOUT_CTRL1_TYPE(0);
172 break;
173 case 16:
174
175 val |= TDMOUT_CTRL1_TYPE(2);
176 break;
177 case 32:
178
179 val |= TDMOUT_CTRL1_TYPE(4);
180 break;
181 default:
182 pr_err("Unsupported physical width: %u\n",
183 ts->physical_width);
184 return -EINVAL;
185 }
186
187
188 if (axg_tdm_lrclk_invert(ts->iface->fmt))
189 val |= TDMOUT_CTRL1_WS_INV;
190
191 regmap_update_bits(map, TDMOUT_CTRL1,
192 (TDMOUT_CTRL1_TYPE_MASK | TDMOUT_CTRL1_MSB_POS_MASK |
193 TDMOUT_CTRL1_WS_INV), val);
194
195
196 regmap_write(map, TDMOUT_SWAP, 0x76543210);
197
198 return axg_tdm_formatter_set_channel_masks(map, ts, TDMOUT_MASK0);
199}
200
201static const struct snd_soc_dapm_widget axg_tdmout_dapm_widgets[] = {
202 SND_SOC_DAPM_AIF_IN("IN 0", NULL, 0, SND_SOC_NOPM, 0, 0),
203 SND_SOC_DAPM_AIF_IN("IN 1", NULL, 0, SND_SOC_NOPM, 0, 0),
204 SND_SOC_DAPM_AIF_IN("IN 2", NULL, 0, SND_SOC_NOPM, 0, 0),
205 SND_SOC_DAPM_MUX("SRC SEL", SND_SOC_NOPM, 0, 0, &axg_tdmout_in_mux),
206 SND_SOC_DAPM_PGA_E("ENC", SND_SOC_NOPM, 0, 0, NULL, 0,
207 axg_tdm_formatter_event,
208 (SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_PRE_PMD)),
209 SND_SOC_DAPM_AIF_OUT("OUT", NULL, 0, SND_SOC_NOPM, 0, 0),
210};
211
212static const struct snd_soc_dapm_route axg_tdmout_dapm_routes[] = {
213 { "SRC SEL", "IN 0", "IN 0" },
214 { "SRC SEL", "IN 1", "IN 1" },
215 { "SRC SEL", "IN 2", "IN 2" },
216 { "ENC", NULL, "SRC SEL" },
217 { "OUT", NULL, "ENC" },
218};
219
220static const struct snd_soc_component_driver axg_tdmout_component_drv = {
221 .controls = axg_tdmout_controls,
222 .num_controls = ARRAY_SIZE(axg_tdmout_controls),
223 .dapm_widgets = axg_tdmout_dapm_widgets,
224 .num_dapm_widgets = ARRAY_SIZE(axg_tdmout_dapm_widgets),
225 .dapm_routes = axg_tdmout_dapm_routes,
226 .num_dapm_routes = ARRAY_SIZE(axg_tdmout_dapm_routes),
227};
228
229static const struct axg_tdm_formatter_ops axg_tdmout_ops = {
230 .get_stream = axg_tdmout_get_tdm_stream,
231 .prepare = axg_tdmout_prepare,
232 .enable = axg_tdmout_enable,
233 .disable = axg_tdmout_disable,
234};
235
236static const struct axg_tdm_formatter_driver axg_tdmout_drv = {
237 .component_drv = &axg_tdmout_component_drv,
238 .regmap_cfg = &axg_tdmout_regmap_cfg,
239 .ops = &axg_tdmout_ops,
240 .quirks = &(const struct axg_tdm_formatter_hw) {
241 .invert_sclk = true,
242 .skew_offset = 1,
243 },
244};
245
246static const struct axg_tdm_formatter_driver g12a_tdmout_drv = {
247 .component_drv = &axg_tdmout_component_drv,
248 .regmap_cfg = &axg_tdmout_regmap_cfg,
249 .ops = &axg_tdmout_ops,
250 .quirks = &(const struct axg_tdm_formatter_hw) {
251 .invert_sclk = true,
252 .skew_offset = 2,
253 },
254};
255
256static const struct of_device_id axg_tdmout_of_match[] = {
257 {
258 .compatible = "amlogic,axg-tdmout",
259 .data = &axg_tdmout_drv,
260 }, {
261 .compatible = "amlogic,g12a-tdmout",
262 .data = &g12a_tdmout_drv,
263 }, {}
264};
265MODULE_DEVICE_TABLE(of, axg_tdmout_of_match);
266
267static struct platform_driver axg_tdmout_pdrv = {
268 .probe = axg_tdm_formatter_probe,
269 .driver = {
270 .name = "axg-tdmout",
271 .of_match_table = axg_tdmout_of_match,
272 },
273};
274module_platform_driver(axg_tdmout_pdrv);
275
276MODULE_DESCRIPTION("Amlogic AXG TDM output formatter driver");
277MODULE_AUTHOR("Jerome Brunet <jbrunet@baylibre.com>");
278MODULE_LICENSE("GPL v2");
279
