1
2
3
4
5
6
7
8
9
10
11
12
13
14#include <linux/types.h>
15#include <linux/gpio.h>
16#include <linux/module.h>
17
18#include <sound/soc.h>
19#include <sound/jack.h>
20
21#include <mach/gpio-samsung.h>
22#include "regs-iis.h"
23#include <asm/mach-types.h>
24
25#include "s3c24xx-i2s.h"
26
27static int rx1950_uda1380_init(struct snd_soc_pcm_runtime *rtd);
28static int rx1950_startup(struct snd_pcm_substream *substream);
29static int rx1950_hw_params(struct snd_pcm_substream *substream,
30 struct snd_pcm_hw_params *params);
31static int rx1950_spk_power(struct snd_soc_dapm_widget *w,
32 struct snd_kcontrol *kcontrol, int event);
33
34static const unsigned int rates[] = {
35 16000,
36 44100,
37 48000,
38};
39
40static const struct snd_pcm_hw_constraint_list hw_rates = {
41 .count = ARRAY_SIZE(rates),
42 .list = rates,
43};
44
45static struct snd_soc_jack hp_jack;
46
47static struct snd_soc_jack_pin hp_jack_pins[] = {
48 {
49 .pin = "Headphone Jack",
50 .mask = SND_JACK_HEADPHONE,
51 },
52 {
53 .pin = "Speaker",
54 .mask = SND_JACK_HEADPHONE,
55 .invert = 1,
56 },
57};
58
59static struct snd_soc_jack_gpio hp_jack_gpios[] = {
60 [0] = {
61 .gpio = S3C2410_GPG(12),
62 .name = "hp-gpio",
63 .report = SND_JACK_HEADPHONE,
64 .invert = 1,
65 .debounce_time = 200,
66 },
67};
68
69static struct snd_soc_ops rx1950_ops = {
70 .startup = rx1950_startup,
71 .hw_params = rx1950_hw_params,
72};
73
74
75SND_SOC_DAILINK_DEFS(uda1380,
76 DAILINK_COMP_ARRAY(COMP_CPU("s3c24xx-iis")),
77 DAILINK_COMP_ARRAY(COMP_CODEC("uda1380-codec.0-001a",
78 "uda1380-hifi")),
79 DAILINK_COMP_ARRAY(COMP_PLATFORM("s3c24xx-iis")));
80
81static struct snd_soc_dai_link rx1950_uda1380_dai[] = {
82 {
83 .name = "uda1380",
84 .stream_name = "UDA1380 Duplex",
85 .init = rx1950_uda1380_init,
86 .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
87 SND_SOC_DAIFMT_CBS_CFS,
88 .ops = &rx1950_ops,
89 SND_SOC_DAILINK_REG(uda1380),
90 },
91};
92
93
94static const struct snd_soc_dapm_widget uda1380_dapm_widgets[] = {
95 SND_SOC_DAPM_HP("Headphone Jack", NULL),
96 SND_SOC_DAPM_MIC("Mic Jack", NULL),
97 SND_SOC_DAPM_SPK("Speaker", rx1950_spk_power),
98};
99
100
101static const struct snd_soc_dapm_route audio_map[] = {
102
103 {"Headphone Jack", NULL, "VOUTLHP"},
104 {"Headphone Jack", NULL, "VOUTRHP"},
105
106
107 {"Speaker", NULL, "VOUTL"},
108 {"Speaker", NULL, "VOUTR"},
109
110
111 {"VINM", NULL, "Mic Jack"},
112};
113
114static struct snd_soc_card rx1950_asoc = {
115 .name = "rx1950",
116 .owner = THIS_MODULE,
117 .dai_link = rx1950_uda1380_dai,
118 .num_links = ARRAY_SIZE(rx1950_uda1380_dai),
119
120 .dapm_widgets = uda1380_dapm_widgets,
121 .num_dapm_widgets = ARRAY_SIZE(uda1380_dapm_widgets),
122 .dapm_routes = audio_map,
123 .num_dapm_routes = ARRAY_SIZE(audio_map),
124};
125
126static struct platform_device *s3c24xx_snd_device;
127
128static int rx1950_startup(struct snd_pcm_substream *substream)
129{
130 struct snd_pcm_runtime *runtime = substream->runtime;
131
132 return snd_pcm_hw_constraint_list(runtime, 0,
133 SNDRV_PCM_HW_PARAM_RATE,
134 &hw_rates);
135}
136
137static int rx1950_spk_power(struct snd_soc_dapm_widget *w,
138 struct snd_kcontrol *kcontrol, int event)
139{
140 if (SND_SOC_DAPM_EVENT_ON(event))
141 gpio_set_value(S3C2410_GPA(1), 1);
142 else
143 gpio_set_value(S3C2410_GPA(1), 0);
144
145 return 0;
146}
147
148static int rx1950_hw_params(struct snd_pcm_substream *substream,
149 struct snd_pcm_hw_params *params)
150{
151 struct snd_soc_pcm_runtime *rtd = substream->private_data;
152 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
153 int div;
154 int ret;
155 unsigned int rate = params_rate(params);
156 int clk_source, fs_mode;
157
158 switch (rate) {
159 case 16000:
160 case 48000:
161 clk_source = S3C24XX_CLKSRC_PCLK;
162 fs_mode = S3C2410_IISMOD_256FS;
163 div = s3c24xx_i2s_get_clockrate() / (256 * rate);
164 if (s3c24xx_i2s_get_clockrate() % (256 * rate) > (128 * rate))
165 div++;
166 break;
167 case 44100:
168 case 88200:
169 clk_source = S3C24XX_CLKSRC_MPLL;
170 fs_mode = S3C2410_IISMOD_384FS;
171 div = 1;
172 break;
173 default:
174 printk(KERN_ERR "%s: rate %d is not supported\n",
175 __func__, rate);
176 return -EINVAL;
177 }
178
179
180 ret = snd_soc_dai_set_sysclk(cpu_dai, clk_source, rate,
181 SND_SOC_CLOCK_OUT);
182 if (ret < 0)
183 return ret;
184
185
186 ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_MCLK,
187 fs_mode);
188 if (ret < 0)
189 return ret;
190
191
192 ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_BCLK,
193 S3C2410_IISMOD_32FS);
194 if (ret < 0)
195 return ret;
196
197
198 ret = snd_soc_dai_set_clkdiv(cpu_dai, S3C24XX_DIV_PRESCALER,
199 S3C24XX_PRESCALE(div, div));
200 if (ret < 0)
201 return ret;
202
203 return 0;
204}
205
206static int rx1950_uda1380_init(struct snd_soc_pcm_runtime *rtd)
207{
208 snd_soc_card_jack_new(rtd->card, "Headphone Jack", SND_JACK_HEADPHONE,
209 &hp_jack, hp_jack_pins, ARRAY_SIZE(hp_jack_pins));
210
211 snd_soc_jack_add_gpios(&hp_jack, ARRAY_SIZE(hp_jack_gpios),
212 hp_jack_gpios);
213
214 return 0;
215}
216
217static int __init rx1950_init(void)
218{
219 int ret;
220
221 if (!machine_is_rx1950())
222 return -ENODEV;
223
224
225 ret = gpio_request(S3C2410_GPA(1), "speaker-power");
226 if (ret)
227 goto err_gpio;
228
229 ret = gpio_direction_output(S3C2410_GPA(1), 0);
230 if (ret)
231 goto err_gpio_conf;
232
233 s3c24xx_snd_device = platform_device_alloc("soc-audio", -1);
234 if (!s3c24xx_snd_device) {
235 ret = -ENOMEM;
236 goto err_plat_alloc;
237 }
238
239 platform_set_drvdata(s3c24xx_snd_device, &rx1950_asoc);
240 ret = platform_device_add(s3c24xx_snd_device);
241
242 if (ret) {
243 platform_device_put(s3c24xx_snd_device);
244 goto err_plat_add;
245 }
246
247 return 0;
248
249err_plat_add:
250err_plat_alloc:
251err_gpio_conf:
252 gpio_free(S3C2410_GPA(1));
253
254err_gpio:
255 return ret;
256}
257
258static void __exit rx1950_exit(void)
259{
260 platform_device_unregister(s3c24xx_snd_device);
261 gpio_free(S3C2410_GPA(1));
262}
263
264module_init(rx1950_init);
265module_exit(rx1950_exit);
266
267
268MODULE_AUTHOR("Vasily Khoruzhick");
269MODULE_DESCRIPTION("ALSA SoC RX1950");
270MODULE_LICENSE("GPL");
271
