Commit | Line | Data |
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17467f23 | 1 | /** |
f0fba2ad | 2 | * Freescale MPC8610HPCD ALSA SoC Machine driver |
17467f23 TT |
3 | * |
4 | * Author: Timur Tabi <timur@freescale.com> | |
5 | * | |
f0fba2ad LG |
6 | * Copyright 2007-2010 Freescale Semiconductor, Inc. |
7 | * | |
8 | * This file is licensed under the terms of the GNU General Public License | |
9 | * version 2. This program is licensed "as is" without any warranty of any | |
10 | * kind, whether express or implied. | |
17467f23 TT |
11 | */ |
12 | ||
13 | #include <linux/module.h> | |
14 | #include <linux/interrupt.h> | |
15 | #include <linux/of_device.h> | |
38fec727 | 16 | #include <linux/slab.h> |
17467f23 | 17 | #include <sound/soc.h> |
6e6f6622 | 18 | #include <asm/fsl_guts.h> |
17467f23 | 19 | |
17467f23 TT |
20 | #include "fsl_dma.h" |
21 | #include "fsl_ssi.h" | |
22 | ||
f0fba2ad LG |
23 | /* There's only one global utilities register */ |
24 | static phys_addr_t guts_phys; | |
25 | ||
26 | #define DAI_NAME_SIZE 32 | |
27 | ||
17467f23 | 28 | /** |
f0fba2ad | 29 | * mpc8610_hpcd_data: machine-specific ASoC device data |
17467f23 TT |
30 | * |
31 | * This structure contains data for a single sound platform device on an | |
32 | * MPC8610 HPCD. Some of the data is taken from the device tree. | |
33 | */ | |
34 | struct mpc8610_hpcd_data { | |
f0fba2ad LG |
35 | struct snd_soc_dai_link dai[2]; |
36 | struct snd_soc_card card; | |
17467f23 TT |
37 | unsigned int dai_format; |
38 | unsigned int codec_clk_direction; | |
39 | unsigned int cpu_clk_direction; | |
40 | unsigned int clk_frequency; | |
f0fba2ad LG |
41 | unsigned int ssi_id; /* 0 = SSI1, 1 = SSI2, etc */ |
42 | unsigned int dma_id[2]; /* 0 = DMA1, 1 = DMA2, etc */ | |
17467f23 | 43 | unsigned int dma_channel_id[2]; /* 0 = ch 0, 1 = ch 1, etc*/ |
f0fba2ad LG |
44 | char codec_dai_name[DAI_NAME_SIZE]; |
45 | char codec_name[DAI_NAME_SIZE]; | |
46 | char platform_name[2][DAI_NAME_SIZE]; /* One for each DMA channel */ | |
17467f23 TT |
47 | }; |
48 | ||
49 | /** | |
f0fba2ad | 50 | * mpc8610_hpcd_machine_probe: initialize the board |
17467f23 | 51 | * |
f0fba2ad | 52 | * This function is used to initialize the board-specific hardware. |
17467f23 TT |
53 | * |
54 | * Here we program the DMACR and PMUXCR registers. | |
55 | */ | |
56 | static int mpc8610_hpcd_machine_probe(struct platform_device *sound_device) | |
57 | { | |
f0fba2ad | 58 | struct snd_soc_card *card = platform_get_drvdata(sound_device); |
17467f23 | 59 | struct mpc8610_hpcd_data *machine_data = |
f0fba2ad | 60 | container_of(card, struct mpc8610_hpcd_data, card); |
6e6f6622 | 61 | struct ccsr_guts_86xx __iomem *guts; |
17467f23 | 62 | |
6e6f6622 | 63 | guts = ioremap(guts_phys, sizeof(struct ccsr_guts_86xx)); |
f0fba2ad LG |
64 | if (!guts) { |
65 | dev_err(card->dev, "could not map global utilities\n"); | |
66 | return -ENOMEM; | |
67 | } | |
17467f23 | 68 | |
f0fba2ad LG |
69 | /* Program the signal routing between the SSI and the DMA */ |
70 | guts_set_dmacr(guts, machine_data->dma_id[0], | |
71 | machine_data->dma_channel_id[0], | |
72 | CCSR_GUTS_DMACR_DEV_SSI); | |
73 | guts_set_dmacr(guts, machine_data->dma_id[1], | |
74 | machine_data->dma_channel_id[1], | |
75 | CCSR_GUTS_DMACR_DEV_SSI); | |
76 | ||
77 | guts_set_pmuxcr_dma(guts, machine_data->dma_id[0], | |
78 | machine_data->dma_channel_id[0], 0); | |
79 | guts_set_pmuxcr_dma(guts, machine_data->dma_id[1], | |
80 | machine_data->dma_channel_id[1], 0); | |
17467f23 | 81 | |
17467f23 TT |
82 | switch (machine_data->ssi_id) { |
83 | case 0: | |
f0fba2ad | 84 | clrsetbits_be32(&guts->pmuxcr, |
17467f23 TT |
85 | CCSR_GUTS_PMUXCR_SSI1_MASK, CCSR_GUTS_PMUXCR_SSI1_SSI); |
86 | break; | |
87 | case 1: | |
f0fba2ad | 88 | clrsetbits_be32(&guts->pmuxcr, |
17467f23 TT |
89 | CCSR_GUTS_PMUXCR_SSI2_MASK, CCSR_GUTS_PMUXCR_SSI2_SSI); |
90 | break; | |
91 | } | |
92 | ||
f0fba2ad LG |
93 | iounmap(guts); |
94 | ||
17467f23 TT |
95 | return 0; |
96 | } | |
97 | ||
98 | /** | |
99 | * mpc8610_hpcd_startup: program the board with various hardware parameters | |
100 | * | |
101 | * This function takes board-specific information, like clock frequencies | |
102 | * and serial data formats, and passes that information to the codec and | |
103 | * transport drivers. | |
104 | */ | |
105 | static int mpc8610_hpcd_startup(struct snd_pcm_substream *substream) | |
106 | { | |
107 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
17467f23 | 108 | struct mpc8610_hpcd_data *machine_data = |
f0fba2ad LG |
109 | container_of(rtd->card, struct mpc8610_hpcd_data, card); |
110 | struct device *dev = rtd->card->dev; | |
17467f23 TT |
111 | int ret = 0; |
112 | ||
17467f23 | 113 | /* Tell the codec driver what the serial protocol is. */ |
f0fba2ad | 114 | ret = snd_soc_dai_set_fmt(rtd->codec_dai, machine_data->dai_format); |
64105cfd | 115 | if (ret < 0) { |
f0fba2ad | 116 | dev_err(dev, "could not set codec driver audio format\n"); |
64105cfd | 117 | return ret; |
17467f23 TT |
118 | } |
119 | ||
120 | /* | |
121 | * Tell the codec driver what the MCLK frequency is, and whether it's | |
122 | * a slave or master. | |
123 | */ | |
f0fba2ad LG |
124 | ret = snd_soc_dai_set_sysclk(rtd->codec_dai, 0, |
125 | machine_data->clk_frequency, | |
126 | machine_data->codec_clk_direction); | |
64105cfd | 127 | if (ret < 0) { |
f0fba2ad | 128 | dev_err(dev, "could not set codec driver clock params\n"); |
64105cfd | 129 | return ret; |
17467f23 TT |
130 | } |
131 | ||
132 | return 0; | |
133 | } | |
134 | ||
135 | /** | |
136 | * mpc8610_hpcd_machine_remove: Remove the sound device | |
137 | * | |
138 | * This function is called to remove the sound device for one SSI. We | |
139 | * de-program the DMACR and PMUXCR register. | |
140 | */ | |
f0fba2ad | 141 | static int mpc8610_hpcd_machine_remove(struct platform_device *sound_device) |
17467f23 | 142 | { |
f0fba2ad | 143 | struct snd_soc_card *card = platform_get_drvdata(sound_device); |
17467f23 | 144 | struct mpc8610_hpcd_data *machine_data = |
f0fba2ad | 145 | container_of(card, struct mpc8610_hpcd_data, card); |
6e6f6622 | 146 | struct ccsr_guts_86xx __iomem *guts; |
f0fba2ad | 147 | |
6e6f6622 | 148 | guts = ioremap(guts_phys, sizeof(struct ccsr_guts_86xx)); |
f0fba2ad LG |
149 | if (!guts) { |
150 | dev_err(card->dev, "could not map global utilities\n"); | |
151 | return -ENOMEM; | |
152 | } | |
17467f23 TT |
153 | |
154 | /* Restore the signal routing */ | |
155 | ||
f0fba2ad LG |
156 | guts_set_dmacr(guts, machine_data->dma_id[0], |
157 | machine_data->dma_channel_id[0], 0); | |
158 | guts_set_dmacr(guts, machine_data->dma_id[1], | |
159 | machine_data->dma_channel_id[1], 0); | |
17467f23 TT |
160 | |
161 | switch (machine_data->ssi_id) { | |
162 | case 0: | |
f0fba2ad | 163 | clrsetbits_be32(&guts->pmuxcr, |
17467f23 TT |
164 | CCSR_GUTS_PMUXCR_SSI1_MASK, CCSR_GUTS_PMUXCR_SSI1_LA); |
165 | break; | |
166 | case 1: | |
f0fba2ad | 167 | clrsetbits_be32(&guts->pmuxcr, |
83544994 | 168 | CCSR_GUTS_PMUXCR_SSI2_MASK, CCSR_GUTS_PMUXCR_SSI2_LA); |
17467f23 TT |
169 | break; |
170 | } | |
171 | ||
f0fba2ad LG |
172 | iounmap(guts); |
173 | ||
17467f23 TT |
174 | return 0; |
175 | } | |
176 | ||
177 | /** | |
f0fba2ad | 178 | * mpc8610_hpcd_ops: ASoC machine driver operations |
17467f23 TT |
179 | */ |
180 | static struct snd_soc_ops mpc8610_hpcd_ops = { | |
181 | .startup = mpc8610_hpcd_startup, | |
182 | }; | |
183 | ||
17467f23 | 184 | /** |
f0fba2ad | 185 | * get_node_by_phandle_name - get a node by its phandle name |
17467f23 | 186 | * |
f0fba2ad LG |
187 | * This function takes a node, the name of a property in that node, and a |
188 | * compatible string. Assuming the property is a phandle to another node, | |
189 | * it returns that node, (optionally) if that node is compatible. | |
17467f23 | 190 | * |
f0fba2ad LG |
191 | * If the property is not a phandle, or the node it points to is not compatible |
192 | * with the specific string, then NULL is returned. | |
193 | */ | |
194 | static struct device_node *get_node_by_phandle_name(struct device_node *np, | |
195 | const char *name, | |
196 | const char *compatible) | |
197 | { | |
198 | const phandle *ph; | |
199 | int len; | |
200 | ||
201 | ph = of_get_property(np, name, &len); | |
202 | if (!ph || (len != sizeof(phandle))) | |
203 | return NULL; | |
204 | ||
205 | np = of_find_node_by_phandle(*ph); | |
206 | if (!np) | |
207 | return NULL; | |
208 | ||
209 | if (compatible && !of_device_is_compatible(np, compatible)) { | |
210 | of_node_put(np); | |
211 | return NULL; | |
212 | } | |
213 | ||
214 | return np; | |
215 | } | |
216 | ||
217 | /** | |
218 | * get_parent_cell_index -- return the cell-index of the parent of a node | |
17467f23 | 219 | * |
f0fba2ad LG |
220 | * Return the value of the cell-index property of the parent of the given |
221 | * node. This is used for DMA channel nodes that need to know the DMA ID | |
222 | * of the controller they are on. | |
223 | */ | |
224 | static int get_parent_cell_index(struct device_node *np) | |
225 | { | |
226 | struct device_node *parent = of_get_parent(np); | |
227 | const u32 *iprop; | |
228 | ||
229 | if (!parent) | |
230 | return -1; | |
231 | ||
232 | iprop = of_get_property(parent, "cell-index", NULL); | |
233 | of_node_put(parent); | |
234 | ||
235 | if (!iprop) | |
236 | return -1; | |
237 | ||
238 | return *iprop; | |
239 | } | |
240 | ||
241 | /** | |
242 | * codec_node_dev_name - determine the dev_name for a codec node | |
17467f23 | 243 | * |
f0fba2ad LG |
244 | * This function determines the dev_name for an I2C node. This is the name |
245 | * that would be returned by dev_name() if this device_node were part of a | |
246 | * 'struct device' It's ugly and hackish, but it works. | |
247 | * | |
248 | * The dev_name for such devices include the bus number and I2C address. For | |
249 | * example, "cs4270-codec.0-004f". | |
17467f23 | 250 | */ |
f0fba2ad | 251 | static int codec_node_dev_name(struct device_node *np, char *buf, size_t len) |
17467f23 | 252 | { |
17467f23 | 253 | const u32 *iprop; |
f0fba2ad LG |
254 | int bus, addr; |
255 | char temp[DAI_NAME_SIZE]; | |
256 | ||
257 | of_modalias_node(np, temp, DAI_NAME_SIZE); | |
258 | ||
259 | iprop = of_get_property(np, "reg", NULL); | |
260 | if (!iprop) | |
261 | return -EINVAL; | |
262 | ||
263 | addr = *iprop; | |
264 | ||
265 | bus = get_parent_cell_index(np); | |
266 | if (bus < 0) | |
267 | return bus; | |
268 | ||
269 | snprintf(buf, len, "%s-codec.%u-%04x", temp, bus, addr); | |
270 | ||
271 | return 0; | |
272 | } | |
273 | ||
274 | static int get_dma_channel(struct device_node *ssi_np, | |
275 | const char *compatible, | |
276 | struct snd_soc_dai_link *dai, | |
277 | unsigned int *dma_channel_id, | |
278 | unsigned int *dma_id) | |
279 | { | |
17467f23 | 280 | struct resource res; |
f0fba2ad LG |
281 | struct device_node *dma_channel_np; |
282 | const u32 *iprop; | |
283 | int ret; | |
284 | ||
285 | dma_channel_np = get_node_by_phandle_name(ssi_np, compatible, | |
286 | "fsl,ssi-dma-channel"); | |
287 | if (!dma_channel_np) | |
288 | return -EINVAL; | |
289 | ||
290 | /* Determine the dev_name for the device_node. This code mimics the | |
291 | * behavior of of_device_make_bus_id(). We need this because ASoC uses | |
292 | * the dev_name() of the device to match the platform (DMA) device with | |
293 | * the CPU (SSI) device. It's all ugly and hackish, but it works (for | |
294 | * now). | |
295 | * | |
296 | * dai->platform name should already point to an allocated buffer. | |
297 | */ | |
298 | ret = of_address_to_resource(dma_channel_np, 0, &res); | |
299 | if (ret) | |
300 | return ret; | |
301 | snprintf((char *)dai->platform_name, DAI_NAME_SIZE, "%llx.%s", | |
302 | (unsigned long long) res.start, dma_channel_np->name); | |
303 | ||
304 | iprop = of_get_property(dma_channel_np, "cell-index", NULL); | |
305 | if (!iprop) { | |
306 | of_node_put(dma_channel_np); | |
307 | return -EINVAL; | |
308 | } | |
309 | ||
310 | *dma_channel_id = *iprop; | |
311 | *dma_id = get_parent_cell_index(dma_channel_np); | |
312 | of_node_put(dma_channel_np); | |
313 | ||
314 | return 0; | |
315 | } | |
316 | ||
317 | /** | |
318 | * mpc8610_hpcd_probe: platform probe function for the machine driver | |
319 | * | |
320 | * Although this is a machine driver, the SSI node is the "master" node with | |
321 | * respect to audio hardware connections. Therefore, we create a new ASoC | |
322 | * device for each new SSI node that has a codec attached. | |
323 | */ | |
324 | static int mpc8610_hpcd_probe(struct platform_device *pdev) | |
325 | { | |
326 | struct device *dev = pdev->dev.parent; | |
38fec727 TT |
327 | /* ssi_pdev is the platform device for the SSI node that probed us */ |
328 | struct platform_device *ssi_pdev = | |
329 | container_of(dev, struct platform_device, dev); | |
330 | struct device_node *np = ssi_pdev->dev.of_node; | |
f0fba2ad | 331 | struct device_node *codec_np = NULL; |
17467f23 TT |
332 | struct platform_device *sound_device = NULL; |
333 | struct mpc8610_hpcd_data *machine_data; | |
17467f23 | 334 | int ret = -ENODEV; |
f0fba2ad LG |
335 | const char *sprop; |
336 | const u32 *iprop; | |
337 | ||
338 | /* We are only interested in SSIs with a codec phandle in them, | |
339 | * so let's make sure this SSI has one. The MPC8610 HPCD only | |
340 | * knows about the CS4270 codec, so reject anything else. | |
341 | */ | |
342 | codec_np = get_node_by_phandle_name(np, "codec-handle", | |
343 | "cirrus,cs4270"); | |
344 | if (!codec_np) { | |
345 | dev_err(dev, "invalid codec node\n"); | |
346 | return -EINVAL; | |
347 | } | |
17467f23 TT |
348 | |
349 | machine_data = kzalloc(sizeof(struct mpc8610_hpcd_data), GFP_KERNEL); | |
350 | if (!machine_data) | |
351 | return -ENOMEM; | |
352 | ||
38fec727 | 353 | machine_data->dai[0].cpu_dai_name = dev_name(&ssi_pdev->dev); |
f0fba2ad | 354 | machine_data->dai[0].ops = &mpc8610_hpcd_ops; |
17467f23 | 355 | |
f0fba2ad LG |
356 | /* Determine the codec name, it will be used as the codec DAI name */ |
357 | ret = codec_node_dev_name(codec_np, machine_data->codec_name, | |
358 | DAI_NAME_SIZE); | |
359 | if (ret) { | |
360 | dev_err(&pdev->dev, "invalid codec node %s\n", | |
361 | codec_np->full_name); | |
362 | ret = -EINVAL; | |
17467f23 | 363 | goto error; |
f0fba2ad LG |
364 | } |
365 | machine_data->dai[0].codec_name = machine_data->codec_name; | |
17467f23 | 366 | |
f0fba2ad LG |
367 | /* The DAI name from the codec (snd_soc_dai_driver.name) */ |
368 | machine_data->dai[0].codec_dai_name = "cs4270-hifi"; | |
17467f23 | 369 | |
f0fba2ad LG |
370 | /* We register two DAIs per SSI, one for playback and the other for |
371 | * capture. Currently, we only support codecs that have one DAI for | |
372 | * both playback and capture. | |
373 | */ | |
374 | memcpy(&machine_data->dai[1], &machine_data->dai[0], | |
375 | sizeof(struct snd_soc_dai_link)); | |
17467f23 TT |
376 | |
377 | /* Get the device ID */ | |
378 | iprop = of_get_property(np, "cell-index", NULL); | |
379 | if (!iprop) { | |
f0fba2ad | 380 | dev_err(&pdev->dev, "cell-index property not found\n"); |
17467f23 TT |
381 | ret = -EINVAL; |
382 | goto error; | |
383 | } | |
384 | machine_data->ssi_id = *iprop; | |
17467f23 TT |
385 | |
386 | /* Get the serial format and clock direction. */ | |
387 | sprop = of_get_property(np, "fsl,mode", NULL); | |
388 | if (!sprop) { | |
f0fba2ad | 389 | dev_err(&pdev->dev, "fsl,mode property not found\n"); |
17467f23 TT |
390 | ret = -EINVAL; |
391 | goto error; | |
392 | } | |
393 | ||
394 | if (strcasecmp(sprop, "i2s-slave") == 0) { | |
395 | machine_data->dai_format = SND_SOC_DAIFMT_I2S; | |
396 | machine_data->codec_clk_direction = SND_SOC_CLOCK_OUT; | |
397 | machine_data->cpu_clk_direction = SND_SOC_CLOCK_IN; | |
398 | ||
f0fba2ad | 399 | /* In i2s-slave mode, the codec has its own clock source, so we |
17467f23 TT |
400 | * need to get the frequency from the device tree and pass it to |
401 | * the codec driver. | |
402 | */ | |
403 | iprop = of_get_property(codec_np, "clock-frequency", NULL); | |
404 | if (!iprop || !*iprop) { | |
f0fba2ad LG |
405 | dev_err(&pdev->dev, "codec bus-frequency " |
406 | "property is missing or invalid\n"); | |
17467f23 TT |
407 | ret = -EINVAL; |
408 | goto error; | |
409 | } | |
410 | machine_data->clk_frequency = *iprop; | |
411 | } else if (strcasecmp(sprop, "i2s-master") == 0) { | |
412 | machine_data->dai_format = SND_SOC_DAIFMT_I2S; | |
413 | machine_data->codec_clk_direction = SND_SOC_CLOCK_IN; | |
414 | machine_data->cpu_clk_direction = SND_SOC_CLOCK_OUT; | |
415 | } else if (strcasecmp(sprop, "lj-slave") == 0) { | |
416 | machine_data->dai_format = SND_SOC_DAIFMT_LEFT_J; | |
417 | machine_data->codec_clk_direction = SND_SOC_CLOCK_OUT; | |
418 | machine_data->cpu_clk_direction = SND_SOC_CLOCK_IN; | |
419 | } else if (strcasecmp(sprop, "lj-master") == 0) { | |
420 | machine_data->dai_format = SND_SOC_DAIFMT_LEFT_J; | |
421 | machine_data->codec_clk_direction = SND_SOC_CLOCK_IN; | |
422 | machine_data->cpu_clk_direction = SND_SOC_CLOCK_OUT; | |
e5c21571 | 423 | } else if (strcasecmp(sprop, "rj-slave") == 0) { |
17467f23 TT |
424 | machine_data->dai_format = SND_SOC_DAIFMT_RIGHT_J; |
425 | machine_data->codec_clk_direction = SND_SOC_CLOCK_OUT; | |
426 | machine_data->cpu_clk_direction = SND_SOC_CLOCK_IN; | |
427 | } else if (strcasecmp(sprop, "rj-master") == 0) { | |
428 | machine_data->dai_format = SND_SOC_DAIFMT_RIGHT_J; | |
429 | machine_data->codec_clk_direction = SND_SOC_CLOCK_IN; | |
430 | machine_data->cpu_clk_direction = SND_SOC_CLOCK_OUT; | |
431 | } else if (strcasecmp(sprop, "ac97-slave") == 0) { | |
432 | machine_data->dai_format = SND_SOC_DAIFMT_AC97; | |
433 | machine_data->codec_clk_direction = SND_SOC_CLOCK_OUT; | |
434 | machine_data->cpu_clk_direction = SND_SOC_CLOCK_IN; | |
435 | } else if (strcasecmp(sprop, "ac97-master") == 0) { | |
436 | machine_data->dai_format = SND_SOC_DAIFMT_AC97; | |
437 | machine_data->codec_clk_direction = SND_SOC_CLOCK_IN; | |
438 | machine_data->cpu_clk_direction = SND_SOC_CLOCK_OUT; | |
439 | } else { | |
f0fba2ad LG |
440 | dev_err(&pdev->dev, |
441 | "unrecognized fsl,mode property '%s'\n", sprop); | |
17467f23 TT |
442 | ret = -EINVAL; |
443 | goto error; | |
444 | } | |
445 | ||
446 | if (!machine_data->clk_frequency) { | |
f0fba2ad | 447 | dev_err(&pdev->dev, "unknown clock frequency\n"); |
17467f23 TT |
448 | ret = -EINVAL; |
449 | goto error; | |
450 | } | |
451 | ||
f0fba2ad LG |
452 | /* Find the playback DMA channel to use. */ |
453 | machine_data->dai[0].platform_name = machine_data->platform_name[0]; | |
454 | ret = get_dma_channel(np, "fsl,playback-dma", &machine_data->dai[0], | |
455 | &machine_data->dma_channel_id[0], | |
456 | &machine_data->dma_id[0]); | |
17467f23 | 457 | if (ret) { |
f0fba2ad | 458 | dev_err(&pdev->dev, "missing/invalid playback DMA phandle\n"); |
17467f23 TT |
459 | goto error; |
460 | } | |
461 | ||
f0fba2ad LG |
462 | /* Find the capture DMA channel to use. */ |
463 | machine_data->dai[1].platform_name = machine_data->platform_name[1]; | |
464 | ret = get_dma_channel(np, "fsl,capture-dma", &machine_data->dai[1], | |
465 | &machine_data->dma_channel_id[1], | |
466 | &machine_data->dma_id[1]); | |
467 | if (ret) { | |
468 | dev_err(&pdev->dev, "missing/invalid capture DMA phandle\n"); | |
17467f23 TT |
469 | goto error; |
470 | } | |
471 | ||
f0fba2ad LG |
472 | /* Initialize our DAI data structure. */ |
473 | machine_data->dai[0].stream_name = "playback"; | |
474 | machine_data->dai[1].stream_name = "capture"; | |
475 | machine_data->dai[0].name = machine_data->dai[0].stream_name; | |
476 | machine_data->dai[1].name = machine_data->dai[1].stream_name; | |
17467f23 | 477 | |
f0fba2ad LG |
478 | machine_data->card.probe = mpc8610_hpcd_machine_probe; |
479 | machine_data->card.remove = mpc8610_hpcd_machine_remove; | |
480 | machine_data->card.name = pdev->name; /* The platform driver name */ | |
481 | machine_data->card.num_links = 2; | |
482 | machine_data->card.dai_link = machine_data->dai; | |
17467f23 TT |
483 | |
484 | /* Allocate a new audio platform device structure */ | |
485 | sound_device = platform_device_alloc("soc-audio", -1); | |
486 | if (!sound_device) { | |
f0fba2ad | 487 | dev_err(&pdev->dev, "platform device alloc failed\n"); |
17467f23 TT |
488 | ret = -ENOMEM; |
489 | goto error; | |
490 | } | |
491 | ||
f0fba2ad LG |
492 | /* Associate the card data with the sound device */ |
493 | platform_set_drvdata(sound_device, &machine_data->card); | |
17467f23 | 494 | |
f0fba2ad | 495 | /* Register with ASoC */ |
17467f23 | 496 | ret = platform_device_add(sound_device); |
17467f23 | 497 | if (ret) { |
f0fba2ad | 498 | dev_err(&pdev->dev, "platform device add failed\n"); |
17467f23 TT |
499 | goto error; |
500 | } | |
501 | ||
f0fba2ad | 502 | of_node_put(codec_np); |
17467f23 TT |
503 | |
504 | return 0; | |
505 | ||
506 | error: | |
507 | of_node_put(codec_np); | |
17467f23 TT |
508 | |
509 | if (sound_device) | |
510 | platform_device_unregister(sound_device); | |
511 | ||
17467f23 TT |
512 | kfree(machine_data); |
513 | ||
514 | return ret; | |
515 | } | |
516 | ||
517 | /** | |
f0fba2ad | 518 | * mpc8610_hpcd_remove: remove the platform device |
17467f23 | 519 | * |
f0fba2ad | 520 | * This function is called when the platform device is removed. |
17467f23 | 521 | */ |
f0fba2ad | 522 | static int __devexit mpc8610_hpcd_remove(struct platform_device *pdev) |
17467f23 | 523 | { |
f0fba2ad LG |
524 | struct platform_device *sound_device = dev_get_drvdata(&pdev->dev); |
525 | struct snd_soc_card *card = platform_get_drvdata(sound_device); | |
17467f23 | 526 | struct mpc8610_hpcd_data *machine_data = |
f0fba2ad | 527 | container_of(card, struct mpc8610_hpcd_data, card); |
17467f23 TT |
528 | |
529 | platform_device_unregister(sound_device); | |
530 | ||
17467f23 TT |
531 | kfree(machine_data); |
532 | sound_device->dev.platform_data = NULL; | |
533 | ||
f0fba2ad | 534 | dev_set_drvdata(&pdev->dev, NULL); |
17467f23 TT |
535 | |
536 | return 0; | |
537 | } | |
538 | ||
f0fba2ad LG |
539 | static struct platform_driver mpc8610_hpcd_driver = { |
540 | .probe = mpc8610_hpcd_probe, | |
541 | .remove = __devexit_p(mpc8610_hpcd_remove), | |
4018294b | 542 | .driver = { |
f0fba2ad LG |
543 | /* The name must match the 'model' property in the device tree, |
544 | * in lowercase letters. | |
545 | */ | |
546 | .name = "snd-soc-mpc8610hpcd", | |
4018294b | 547 | .owner = THIS_MODULE, |
4018294b | 548 | }, |
17467f23 TT |
549 | }; |
550 | ||
551 | /** | |
f0fba2ad | 552 | * mpc8610_hpcd_init: machine driver initialization. |
17467f23 TT |
553 | * |
554 | * This function is called when this module is loaded. | |
555 | */ | |
556 | static int __init mpc8610_hpcd_init(void) | |
557 | { | |
f0fba2ad LG |
558 | struct device_node *guts_np; |
559 | struct resource res; | |
17467f23 | 560 | |
f0fba2ad | 561 | pr_info("Freescale MPC8610 HPCD ALSA SoC machine driver\n"); |
17467f23 | 562 | |
f0fba2ad LG |
563 | /* Get the physical address of the global utilities registers */ |
564 | guts_np = of_find_compatible_node(NULL, NULL, "fsl,mpc8610-guts"); | |
565 | if (of_address_to_resource(guts_np, 0, &res)) { | |
566 | pr_err("mpc8610-hpcd: missing/invalid global utilities node\n"); | |
567 | return -EINVAL; | |
568 | } | |
569 | guts_phys = res.start; | |
17467f23 | 570 | |
f0fba2ad | 571 | return platform_driver_register(&mpc8610_hpcd_driver); |
17467f23 TT |
572 | } |
573 | ||
574 | /** | |
f0fba2ad | 575 | * mpc8610_hpcd_exit: machine driver exit |
17467f23 TT |
576 | * |
577 | * This function is called when this driver is unloaded. | |
578 | */ | |
579 | static void __exit mpc8610_hpcd_exit(void) | |
580 | { | |
f0fba2ad | 581 | platform_driver_unregister(&mpc8610_hpcd_driver); |
17467f23 TT |
582 | } |
583 | ||
584 | module_init(mpc8610_hpcd_init); | |
585 | module_exit(mpc8610_hpcd_exit); | |
586 | ||
587 | MODULE_AUTHOR("Timur Tabi <timur@freescale.com>"); | |
f0fba2ad LG |
588 | MODULE_DESCRIPTION("Freescale MPC8610 HPCD ALSA SoC machine driver"); |
589 | MODULE_LICENSE("GPL v2"); |