1 // SPDX-License-Identifier: (GPL-2.0 OR MIT)
3 // Copyright (c) 2018 BayLibre, SAS.
4 // Author: Jerome Brunet <jbrunet@baylibre.com>
6 #include <linux/module.h>
7 #include <linux/of_platform.h>
8 #include <linux/regmap.h>
10 #include <sound/soc-dai.h>
12 #include "axg-tdm-formatter.h"
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
38 static const struct regmap_config axg_tdmin_regmap_cfg
= {
42 .max_register
= TDMIN_MUTE3
,
45 static const char * const axg_tdmin_sel_texts
[] = {
46 "IN 0", "IN 1", "IN 2", "IN 3", "IN 4", "IN 5", "IN 6", "IN 7",
47 "IN 8", "IN 9", "IN 10", "IN 11", "IN 12", "IN 13", "IN 14", "IN 15",
50 /* Change to special mux control to reset dapm */
51 static SOC_ENUM_SINGLE_DECL(axg_tdmin_sel_enum
, TDMIN_CTRL
,
52 TDMIN_CTRL_SEL_SHIFT
, axg_tdmin_sel_texts
);
54 static const struct snd_kcontrol_new axg_tdmin_in_mux
=
55 SOC_DAPM_ENUM("Input Source", axg_tdmin_sel_enum
);
57 static struct snd_soc_dai
*
58 axg_tdmin_get_be(struct snd_soc_dapm_widget
*w
)
60 struct snd_soc_dapm_path
*p
= NULL
;
61 struct snd_soc_dai
*be
;
63 snd_soc_dapm_widget_for_each_source_path(w
, p
) {
67 if (p
->source
->id
== snd_soc_dapm_dai_out
)
68 return (struct snd_soc_dai
*)p
->source
->priv
;
70 be
= axg_tdmin_get_be(p
->source
);
78 static struct axg_tdm_stream
*
79 axg_tdmin_get_tdm_stream(struct snd_soc_dapm_widget
*w
)
81 struct snd_soc_dai
*be
= axg_tdmin_get_be(w
);
86 return be
->capture_dma_data
;
89 static void axg_tdmin_enable(struct regmap
*map
)
91 /* Apply both reset */
92 regmap_update_bits(map
, TDMIN_CTRL
,
93 TDMIN_CTRL_RST_OUT
| TDMIN_CTRL_RST_IN
, 0);
95 /* Clear out reset before in reset */
96 regmap_update_bits(map
, TDMIN_CTRL
,
97 TDMIN_CTRL_RST_OUT
, TDMIN_CTRL_RST_OUT
);
98 regmap_update_bits(map
, TDMIN_CTRL
,
99 TDMIN_CTRL_RST_IN
, TDMIN_CTRL_RST_IN
);
101 /* Actually enable tdmin */
102 regmap_update_bits(map
, TDMIN_CTRL
,
103 TDMIN_CTRL_ENABLE
, TDMIN_CTRL_ENABLE
);
106 static void axg_tdmin_disable(struct regmap
*map
)
108 regmap_update_bits(map
, TDMIN_CTRL
, TDMIN_CTRL_ENABLE
, 0);
111 static int axg_tdmin_prepare(struct regmap
*map
,
112 const struct axg_tdm_formatter_hw
*quirks
,
113 struct axg_tdm_stream
*ts
)
115 unsigned int val
, skew
= quirks
->skew_offset
;
117 /* Set stream skew */
118 switch (ts
->iface
->fmt
& SND_SOC_DAIFMT_FORMAT_MASK
) {
119 case SND_SOC_DAIFMT_I2S
:
120 case SND_SOC_DAIFMT_DSP_A
:
124 case SND_SOC_DAIFMT_LEFT_J
:
125 case SND_SOC_DAIFMT_DSP_B
:
129 pr_err("Unsupported format: %u\n",
130 ts
->iface
->fmt
& SND_SOC_DAIFMT_FORMAT_MASK
);
134 val
= TDMIN_CTRL_IN_BIT_SKEW(skew
);
136 /* Set stream format mode */
137 switch (ts
->iface
->fmt
& SND_SOC_DAIFMT_FORMAT_MASK
) {
138 case SND_SOC_DAIFMT_I2S
:
139 case SND_SOC_DAIFMT_LEFT_J
:
140 case SND_SOC_DAIFMT_RIGHT_J
:
141 val
|= TDMIN_CTRL_I2S_MODE
;
145 /* If the sample clock is inverted, invert it back for the formatter */
146 if (axg_tdm_lrclk_invert(ts
->iface
->fmt
))
147 val
|= TDMIN_CTRL_WS_INV
;
149 /* Set the slot width */
150 val
|= TDMIN_CTRL_BITNUM(ts
->iface
->slot_width
- 1);
153 * The following also reset LSB_FIRST which result in the formatter
154 * placing the first bit received at bit 31
156 regmap_update_bits(map
, TDMIN_CTRL
,
157 (TDMIN_CTRL_IN_BIT_SKEW_MASK
| TDMIN_CTRL_WS_INV
|
158 TDMIN_CTRL_I2S_MODE
| TDMIN_CTRL_LSB_FIRST
|
159 TDMIN_CTRL_BITNUM_MASK
), val
);
161 /* Set static swap mask configuration */
162 regmap_write(map
, TDMIN_SWAP
, 0x76543210);
164 return axg_tdm_formatter_set_channel_masks(map
, ts
, TDMIN_MASK0
);
167 static const struct snd_soc_dapm_widget axg_tdmin_dapm_widgets
[] = {
168 SND_SOC_DAPM_AIF_IN("IN 0", NULL
, 0, SND_SOC_NOPM
, 0, 0),
169 SND_SOC_DAPM_AIF_IN("IN 1", NULL
, 0, SND_SOC_NOPM
, 0, 0),
170 SND_SOC_DAPM_AIF_IN("IN 2", NULL
, 0, SND_SOC_NOPM
, 0, 0),
171 SND_SOC_DAPM_AIF_IN("IN 3", NULL
, 0, SND_SOC_NOPM
, 0, 0),
172 SND_SOC_DAPM_AIF_IN("IN 4", NULL
, 0, SND_SOC_NOPM
, 0, 0),
173 SND_SOC_DAPM_AIF_IN("IN 5", NULL
, 0, SND_SOC_NOPM
, 0, 0),
174 SND_SOC_DAPM_AIF_IN("IN 6", NULL
, 0, SND_SOC_NOPM
, 0, 0),
175 SND_SOC_DAPM_AIF_IN("IN 7", NULL
, 0, SND_SOC_NOPM
, 0, 0),
176 SND_SOC_DAPM_AIF_IN("IN 8", NULL
, 0, SND_SOC_NOPM
, 0, 0),
177 SND_SOC_DAPM_AIF_IN("IN 9", NULL
, 0, SND_SOC_NOPM
, 0, 0),
178 SND_SOC_DAPM_AIF_IN("IN 10", NULL
, 0, SND_SOC_NOPM
, 0, 0),
179 SND_SOC_DAPM_AIF_IN("IN 11", NULL
, 0, SND_SOC_NOPM
, 0, 0),
180 SND_SOC_DAPM_AIF_IN("IN 12", NULL
, 0, SND_SOC_NOPM
, 0, 0),
181 SND_SOC_DAPM_AIF_IN("IN 13", NULL
, 0, SND_SOC_NOPM
, 0, 0),
182 SND_SOC_DAPM_AIF_IN("IN 14", NULL
, 0, SND_SOC_NOPM
, 0, 0),
183 SND_SOC_DAPM_AIF_IN("IN 15", NULL
, 0, SND_SOC_NOPM
, 0, 0),
184 SND_SOC_DAPM_MUX("SRC SEL", SND_SOC_NOPM
, 0, 0, &axg_tdmin_in_mux
),
185 SND_SOC_DAPM_PGA_E("DEC", SND_SOC_NOPM
, 0, 0, NULL
, 0,
186 axg_tdm_formatter_event
,
187 (SND_SOC_DAPM_PRE_PMU
| SND_SOC_DAPM_PRE_PMD
)),
188 SND_SOC_DAPM_AIF_OUT("OUT", NULL
, 0, SND_SOC_NOPM
, 0, 0),
191 static const struct snd_soc_dapm_route axg_tdmin_dapm_routes
[] = {
192 { "SRC SEL", "IN 0", "IN 0" },
193 { "SRC SEL", "IN 1", "IN 1" },
194 { "SRC SEL", "IN 2", "IN 2" },
195 { "SRC SEL", "IN 3", "IN 3" },
196 { "SRC SEL", "IN 4", "IN 4" },
197 { "SRC SEL", "IN 5", "IN 5" },
198 { "SRC SEL", "IN 6", "IN 6" },
199 { "SRC SEL", "IN 7", "IN 7" },
200 { "SRC SEL", "IN 8", "IN 8" },
201 { "SRC SEL", "IN 9", "IN 9" },
202 { "SRC SEL", "IN 10", "IN 10" },
203 { "SRC SEL", "IN 11", "IN 11" },
204 { "SRC SEL", "IN 12", "IN 12" },
205 { "SRC SEL", "IN 13", "IN 13" },
206 { "SRC SEL", "IN 14", "IN 14" },
207 { "SRC SEL", "IN 15", "IN 15" },
208 { "DEC", NULL
, "SRC SEL" },
209 { "OUT", NULL
, "DEC" },
212 static const struct snd_soc_component_driver axg_tdmin_component_drv
= {
213 .dapm_widgets
= axg_tdmin_dapm_widgets
,
214 .num_dapm_widgets
= ARRAY_SIZE(axg_tdmin_dapm_widgets
),
215 .dapm_routes
= axg_tdmin_dapm_routes
,
216 .num_dapm_routes
= ARRAY_SIZE(axg_tdmin_dapm_routes
),
219 static const struct axg_tdm_formatter_ops axg_tdmin_ops
= {
220 .get_stream
= axg_tdmin_get_tdm_stream
,
221 .prepare
= axg_tdmin_prepare
,
222 .enable
= axg_tdmin_enable
,
223 .disable
= axg_tdmin_disable
,
226 static const struct axg_tdm_formatter_driver axg_tdmin_drv
= {
227 .component_drv
= &axg_tdmin_component_drv
,
228 .regmap_cfg
= &axg_tdmin_regmap_cfg
,
229 .ops
= &axg_tdmin_ops
,
230 .quirks
= &(const struct axg_tdm_formatter_hw
) {
235 static const struct axg_tdm_formatter_driver g12a_tdmin_drv
= {
236 .component_drv
= &axg_tdmin_component_drv
,
237 .regmap_cfg
= &axg_tdmin_regmap_cfg
,
238 .ops
= &axg_tdmin_ops
,
239 .quirks
= &(const struct axg_tdm_formatter_hw
) {
244 static const struct of_device_id axg_tdmin_of_match
[] = {
246 .compatible
= "amlogic,axg-tdmin",
247 .data
= &axg_tdmin_drv
,
249 .compatible
= "amlogic,g12a-tdmin",
250 .data
= &g12a_tdmin_drv
,
252 .compatible
= "amlogic,sm1-tdmin",
253 .data
= &g12a_tdmin_drv
,
256 MODULE_DEVICE_TABLE(of
, axg_tdmin_of_match
);
258 static struct platform_driver axg_tdmin_pdrv
= {
259 .probe
= axg_tdm_formatter_probe
,
262 .of_match_table
= axg_tdmin_of_match
,
265 module_platform_driver(axg_tdmin_pdrv
);
267 MODULE_DESCRIPTION("Amlogic AXG TDM input formatter driver");
268 MODULE_AUTHOR("Jerome Brunet <jbrunet@baylibre.com>");
269 MODULE_LICENSE("GPL v2");