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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 | */ | |
e7361ec4 | 56 | static int mpc8610_hpcd_machine_probe(struct snd_soc_card *card) |
17467f23 TT |
57 | { |
58 | struct mpc8610_hpcd_data *machine_data = | |
f0fba2ad | 59 | container_of(card, struct mpc8610_hpcd_data, card); |
6e6f6622 | 60 | struct ccsr_guts_86xx __iomem *guts; |
17467f23 | 61 | |
6e6f6622 | 62 | guts = ioremap(guts_phys, sizeof(struct ccsr_guts_86xx)); |
f0fba2ad LG |
63 | if (!guts) { |
64 | dev_err(card->dev, "could not map global utilities\n"); | |
65 | return -ENOMEM; | |
66 | } | |
17467f23 | 67 | |
f0fba2ad LG |
68 | /* Program the signal routing between the SSI and the DMA */ |
69 | guts_set_dmacr(guts, machine_data->dma_id[0], | |
70 | machine_data->dma_channel_id[0], | |
71 | CCSR_GUTS_DMACR_DEV_SSI); | |
72 | guts_set_dmacr(guts, machine_data->dma_id[1], | |
73 | machine_data->dma_channel_id[1], | |
74 | CCSR_GUTS_DMACR_DEV_SSI); | |
75 | ||
76 | guts_set_pmuxcr_dma(guts, machine_data->dma_id[0], | |
77 | machine_data->dma_channel_id[0], 0); | |
78 | guts_set_pmuxcr_dma(guts, machine_data->dma_id[1], | |
79 | machine_data->dma_channel_id[1], 0); | |
17467f23 | 80 | |
17467f23 TT |
81 | switch (machine_data->ssi_id) { |
82 | case 0: | |
f0fba2ad | 83 | clrsetbits_be32(&guts->pmuxcr, |
17467f23 TT |
84 | CCSR_GUTS_PMUXCR_SSI1_MASK, CCSR_GUTS_PMUXCR_SSI1_SSI); |
85 | break; | |
86 | case 1: | |
f0fba2ad | 87 | clrsetbits_be32(&guts->pmuxcr, |
17467f23 TT |
88 | CCSR_GUTS_PMUXCR_SSI2_MASK, CCSR_GUTS_PMUXCR_SSI2_SSI); |
89 | break; | |
90 | } | |
91 | ||
f0fba2ad LG |
92 | iounmap(guts); |
93 | ||
17467f23 TT |
94 | return 0; |
95 | } | |
96 | ||
97 | /** | |
98 | * mpc8610_hpcd_startup: program the board with various hardware parameters | |
99 | * | |
100 | * This function takes board-specific information, like clock frequencies | |
101 | * and serial data formats, and passes that information to the codec and | |
102 | * transport drivers. | |
103 | */ | |
104 | static int mpc8610_hpcd_startup(struct snd_pcm_substream *substream) | |
105 | { | |
106 | struct snd_soc_pcm_runtime *rtd = substream->private_data; | |
17467f23 | 107 | struct mpc8610_hpcd_data *machine_data = |
f0fba2ad LG |
108 | container_of(rtd->card, struct mpc8610_hpcd_data, card); |
109 | struct device *dev = rtd->card->dev; | |
17467f23 TT |
110 | int ret = 0; |
111 | ||
17467f23 | 112 | /* Tell the codec driver what the serial protocol is. */ |
f0fba2ad | 113 | ret = snd_soc_dai_set_fmt(rtd->codec_dai, machine_data->dai_format); |
64105cfd | 114 | if (ret < 0) { |
f0fba2ad | 115 | dev_err(dev, "could not set codec driver audio format\n"); |
64105cfd | 116 | return ret; |
17467f23 TT |
117 | } |
118 | ||
119 | /* | |
120 | * Tell the codec driver what the MCLK frequency is, and whether it's | |
121 | * a slave or master. | |
122 | */ | |
f0fba2ad LG |
123 | ret = snd_soc_dai_set_sysclk(rtd->codec_dai, 0, |
124 | machine_data->clk_frequency, | |
125 | machine_data->codec_clk_direction); | |
64105cfd | 126 | if (ret < 0) { |
f0fba2ad | 127 | dev_err(dev, "could not set codec driver clock params\n"); |
64105cfd | 128 | return ret; |
17467f23 TT |
129 | } |
130 | ||
131 | return 0; | |
132 | } | |
133 | ||
134 | /** | |
135 | * mpc8610_hpcd_machine_remove: Remove the sound device | |
136 | * | |
137 | * This function is called to remove the sound device for one SSI. We | |
138 | * de-program the DMACR and PMUXCR register. | |
139 | */ | |
e7361ec4 | 140 | static int mpc8610_hpcd_machine_remove(struct snd_soc_card *card) |
17467f23 TT |
141 | { |
142 | struct mpc8610_hpcd_data *machine_data = | |
f0fba2ad | 143 | container_of(card, struct mpc8610_hpcd_data, card); |
6e6f6622 | 144 | struct ccsr_guts_86xx __iomem *guts; |
f0fba2ad | 145 | |
6e6f6622 | 146 | guts = ioremap(guts_phys, sizeof(struct ccsr_guts_86xx)); |
f0fba2ad LG |
147 | if (!guts) { |
148 | dev_err(card->dev, "could not map global utilities\n"); | |
149 | return -ENOMEM; | |
150 | } | |
17467f23 TT |
151 | |
152 | /* Restore the signal routing */ | |
153 | ||
f0fba2ad LG |
154 | guts_set_dmacr(guts, machine_data->dma_id[0], |
155 | machine_data->dma_channel_id[0], 0); | |
156 | guts_set_dmacr(guts, machine_data->dma_id[1], | |
157 | machine_data->dma_channel_id[1], 0); | |
17467f23 TT |
158 | |
159 | switch (machine_data->ssi_id) { | |
160 | case 0: | |
f0fba2ad | 161 | clrsetbits_be32(&guts->pmuxcr, |
17467f23 TT |
162 | CCSR_GUTS_PMUXCR_SSI1_MASK, CCSR_GUTS_PMUXCR_SSI1_LA); |
163 | break; | |
164 | case 1: | |
f0fba2ad | 165 | clrsetbits_be32(&guts->pmuxcr, |
83544994 | 166 | CCSR_GUTS_PMUXCR_SSI2_MASK, CCSR_GUTS_PMUXCR_SSI2_LA); |
17467f23 TT |
167 | break; |
168 | } | |
169 | ||
f0fba2ad LG |
170 | iounmap(guts); |
171 | ||
17467f23 TT |
172 | return 0; |
173 | } | |
174 | ||
175 | /** | |
f0fba2ad | 176 | * mpc8610_hpcd_ops: ASoC machine driver operations |
17467f23 TT |
177 | */ |
178 | static struct snd_soc_ops mpc8610_hpcd_ops = { | |
179 | .startup = mpc8610_hpcd_startup, | |
180 | }; | |
181 | ||
17467f23 | 182 | /** |
f0fba2ad | 183 | * get_node_by_phandle_name - get a node by its phandle name |
17467f23 | 184 | * |
f0fba2ad LG |
185 | * This function takes a node, the name of a property in that node, and a |
186 | * compatible string. Assuming the property is a phandle to another node, | |
187 | * it returns that node, (optionally) if that node is compatible. | |
17467f23 | 188 | * |
f0fba2ad LG |
189 | * If the property is not a phandle, or the node it points to is not compatible |
190 | * with the specific string, then NULL is returned. | |
191 | */ | |
192 | static struct device_node *get_node_by_phandle_name(struct device_node *np, | |
193 | const char *name, | |
194 | const char *compatible) | |
195 | { | |
196 | const phandle *ph; | |
197 | int len; | |
198 | ||
199 | ph = of_get_property(np, name, &len); | |
200 | if (!ph || (len != sizeof(phandle))) | |
201 | return NULL; | |
202 | ||
203 | np = of_find_node_by_phandle(*ph); | |
204 | if (!np) | |
205 | return NULL; | |
206 | ||
207 | if (compatible && !of_device_is_compatible(np, compatible)) { | |
208 | of_node_put(np); | |
209 | return NULL; | |
210 | } | |
211 | ||
212 | return np; | |
213 | } | |
214 | ||
215 | /** | |
216 | * get_parent_cell_index -- return the cell-index of the parent of a node | |
17467f23 | 217 | * |
f0fba2ad LG |
218 | * Return the value of the cell-index property of the parent of the given |
219 | * node. This is used for DMA channel nodes that need to know the DMA ID | |
220 | * of the controller they are on. | |
221 | */ | |
222 | static int get_parent_cell_index(struct device_node *np) | |
223 | { | |
224 | struct device_node *parent = of_get_parent(np); | |
225 | const u32 *iprop; | |
226 | ||
227 | if (!parent) | |
228 | return -1; | |
229 | ||
230 | iprop = of_get_property(parent, "cell-index", NULL); | |
231 | of_node_put(parent); | |
232 | ||
233 | if (!iprop) | |
234 | return -1; | |
235 | ||
236 | return *iprop; | |
237 | } | |
238 | ||
239 | /** | |
240 | * codec_node_dev_name - determine the dev_name for a codec node | |
17467f23 | 241 | * |
f0fba2ad LG |
242 | * This function determines the dev_name for an I2C node. This is the name |
243 | * that would be returned by dev_name() if this device_node were part of a | |
244 | * 'struct device' It's ugly and hackish, but it works. | |
245 | * | |
246 | * The dev_name for such devices include the bus number and I2C address. For | |
247 | * example, "cs4270-codec.0-004f". | |
17467f23 | 248 | */ |
f0fba2ad | 249 | static int codec_node_dev_name(struct device_node *np, char *buf, size_t len) |
17467f23 | 250 | { |
17467f23 | 251 | const u32 *iprop; |
f0fba2ad LG |
252 | int bus, addr; |
253 | char temp[DAI_NAME_SIZE]; | |
254 | ||
255 | of_modalias_node(np, temp, DAI_NAME_SIZE); | |
256 | ||
257 | iprop = of_get_property(np, "reg", NULL); | |
258 | if (!iprop) | |
259 | return -EINVAL; | |
260 | ||
261 | addr = *iprop; | |
262 | ||
263 | bus = get_parent_cell_index(np); | |
264 | if (bus < 0) | |
265 | return bus; | |
266 | ||
267 | snprintf(buf, len, "%s-codec.%u-%04x", temp, bus, addr); | |
268 | ||
269 | return 0; | |
270 | } | |
271 | ||
272 | static int get_dma_channel(struct device_node *ssi_np, | |
273 | const char *compatible, | |
274 | struct snd_soc_dai_link *dai, | |
275 | unsigned int *dma_channel_id, | |
276 | unsigned int *dma_id) | |
277 | { | |
17467f23 | 278 | struct resource res; |
f0fba2ad LG |
279 | struct device_node *dma_channel_np; |
280 | const u32 *iprop; | |
281 | int ret; | |
282 | ||
283 | dma_channel_np = get_node_by_phandle_name(ssi_np, compatible, | |
284 | "fsl,ssi-dma-channel"); | |
285 | if (!dma_channel_np) | |
286 | return -EINVAL; | |
287 | ||
288 | /* Determine the dev_name for the device_node. This code mimics the | |
289 | * behavior of of_device_make_bus_id(). We need this because ASoC uses | |
290 | * the dev_name() of the device to match the platform (DMA) device with | |
291 | * the CPU (SSI) device. It's all ugly and hackish, but it works (for | |
292 | * now). | |
293 | * | |
294 | * dai->platform name should already point to an allocated buffer. | |
295 | */ | |
296 | ret = of_address_to_resource(dma_channel_np, 0, &res); | |
297 | if (ret) | |
298 | return ret; | |
299 | snprintf((char *)dai->platform_name, DAI_NAME_SIZE, "%llx.%s", | |
300 | (unsigned long long) res.start, dma_channel_np->name); | |
301 | ||
302 | iprop = of_get_property(dma_channel_np, "cell-index", NULL); | |
303 | if (!iprop) { | |
304 | of_node_put(dma_channel_np); | |
305 | return -EINVAL; | |
306 | } | |
307 | ||
308 | *dma_channel_id = *iprop; | |
309 | *dma_id = get_parent_cell_index(dma_channel_np); | |
310 | of_node_put(dma_channel_np); | |
311 | ||
312 | return 0; | |
313 | } | |
314 | ||
315 | /** | |
316 | * mpc8610_hpcd_probe: platform probe function for the machine driver | |
317 | * | |
318 | * Although this is a machine driver, the SSI node is the "master" node with | |
319 | * respect to audio hardware connections. Therefore, we create a new ASoC | |
320 | * device for each new SSI node that has a codec attached. | |
321 | */ | |
322 | static int mpc8610_hpcd_probe(struct platform_device *pdev) | |
323 | { | |
324 | struct device *dev = pdev->dev.parent; | |
38fec727 TT |
325 | /* ssi_pdev is the platform device for the SSI node that probed us */ |
326 | struct platform_device *ssi_pdev = | |
327 | container_of(dev, struct platform_device, dev); | |
328 | struct device_node *np = ssi_pdev->dev.of_node; | |
f0fba2ad | 329 | struct device_node *codec_np = NULL; |
17467f23 TT |
330 | struct platform_device *sound_device = NULL; |
331 | struct mpc8610_hpcd_data *machine_data; | |
17467f23 | 332 | int ret = -ENODEV; |
f0fba2ad LG |
333 | const char *sprop; |
334 | const u32 *iprop; | |
335 | ||
336 | /* We are only interested in SSIs with a codec phandle in them, | |
337 | * so let's make sure this SSI has one. The MPC8610 HPCD only | |
338 | * knows about the CS4270 codec, so reject anything else. | |
339 | */ | |
340 | codec_np = get_node_by_phandle_name(np, "codec-handle", | |
341 | "cirrus,cs4270"); | |
342 | if (!codec_np) { | |
343 | dev_err(dev, "invalid codec node\n"); | |
344 | return -EINVAL; | |
345 | } | |
17467f23 TT |
346 | |
347 | machine_data = kzalloc(sizeof(struct mpc8610_hpcd_data), GFP_KERNEL); | |
348 | if (!machine_data) | |
349 | return -ENOMEM; | |
350 | ||
38fec727 | 351 | machine_data->dai[0].cpu_dai_name = dev_name(&ssi_pdev->dev); |
f0fba2ad | 352 | machine_data->dai[0].ops = &mpc8610_hpcd_ops; |
17467f23 | 353 | |
f0fba2ad LG |
354 | /* Determine the codec name, it will be used as the codec DAI name */ |
355 | ret = codec_node_dev_name(codec_np, machine_data->codec_name, | |
356 | DAI_NAME_SIZE); | |
357 | if (ret) { | |
358 | dev_err(&pdev->dev, "invalid codec node %s\n", | |
359 | codec_np->full_name); | |
360 | ret = -EINVAL; | |
17467f23 | 361 | goto error; |
f0fba2ad LG |
362 | } |
363 | machine_data->dai[0].codec_name = machine_data->codec_name; | |
17467f23 | 364 | |
f0fba2ad LG |
365 | /* The DAI name from the codec (snd_soc_dai_driver.name) */ |
366 | machine_data->dai[0].codec_dai_name = "cs4270-hifi"; | |
17467f23 | 367 | |
f0fba2ad LG |
368 | /* We register two DAIs per SSI, one for playback and the other for |
369 | * capture. Currently, we only support codecs that have one DAI for | |
370 | * both playback and capture. | |
371 | */ | |
372 | memcpy(&machine_data->dai[1], &machine_data->dai[0], | |
373 | sizeof(struct snd_soc_dai_link)); | |
17467f23 TT |
374 | |
375 | /* Get the device ID */ | |
376 | iprop = of_get_property(np, "cell-index", NULL); | |
377 | if (!iprop) { | |
f0fba2ad | 378 | dev_err(&pdev->dev, "cell-index property not found\n"); |
17467f23 TT |
379 | ret = -EINVAL; |
380 | goto error; | |
381 | } | |
382 | machine_data->ssi_id = *iprop; | |
17467f23 TT |
383 | |
384 | /* Get the serial format and clock direction. */ | |
385 | sprop = of_get_property(np, "fsl,mode", NULL); | |
386 | if (!sprop) { | |
f0fba2ad | 387 | dev_err(&pdev->dev, "fsl,mode property not found\n"); |
17467f23 TT |
388 | ret = -EINVAL; |
389 | goto error; | |
390 | } | |
391 | ||
392 | if (strcasecmp(sprop, "i2s-slave") == 0) { | |
393 | machine_data->dai_format = SND_SOC_DAIFMT_I2S; | |
394 | machine_data->codec_clk_direction = SND_SOC_CLOCK_OUT; | |
395 | machine_data->cpu_clk_direction = SND_SOC_CLOCK_IN; | |
396 | ||
f0fba2ad | 397 | /* In i2s-slave mode, the codec has its own clock source, so we |
17467f23 TT |
398 | * need to get the frequency from the device tree and pass it to |
399 | * the codec driver. | |
400 | */ | |
401 | iprop = of_get_property(codec_np, "clock-frequency", NULL); | |
402 | if (!iprop || !*iprop) { | |
f0fba2ad LG |
403 | dev_err(&pdev->dev, "codec bus-frequency " |
404 | "property is missing or invalid\n"); | |
17467f23 TT |
405 | ret = -EINVAL; |
406 | goto error; | |
407 | } | |
408 | machine_data->clk_frequency = *iprop; | |
409 | } else if (strcasecmp(sprop, "i2s-master") == 0) { | |
410 | machine_data->dai_format = SND_SOC_DAIFMT_I2S; | |
411 | machine_data->codec_clk_direction = SND_SOC_CLOCK_IN; | |
412 | machine_data->cpu_clk_direction = SND_SOC_CLOCK_OUT; | |
413 | } else if (strcasecmp(sprop, "lj-slave") == 0) { | |
414 | machine_data->dai_format = SND_SOC_DAIFMT_LEFT_J; | |
415 | machine_data->codec_clk_direction = SND_SOC_CLOCK_OUT; | |
416 | machine_data->cpu_clk_direction = SND_SOC_CLOCK_IN; | |
417 | } else if (strcasecmp(sprop, "lj-master") == 0) { | |
418 | machine_data->dai_format = SND_SOC_DAIFMT_LEFT_J; | |
419 | machine_data->codec_clk_direction = SND_SOC_CLOCK_IN; | |
420 | machine_data->cpu_clk_direction = SND_SOC_CLOCK_OUT; | |
e5c21571 | 421 | } else if (strcasecmp(sprop, "rj-slave") == 0) { |
17467f23 TT |
422 | machine_data->dai_format = SND_SOC_DAIFMT_RIGHT_J; |
423 | machine_data->codec_clk_direction = SND_SOC_CLOCK_OUT; | |
424 | machine_data->cpu_clk_direction = SND_SOC_CLOCK_IN; | |
425 | } else if (strcasecmp(sprop, "rj-master") == 0) { | |
426 | machine_data->dai_format = SND_SOC_DAIFMT_RIGHT_J; | |
427 | machine_data->codec_clk_direction = SND_SOC_CLOCK_IN; | |
428 | machine_data->cpu_clk_direction = SND_SOC_CLOCK_OUT; | |
429 | } else if (strcasecmp(sprop, "ac97-slave") == 0) { | |
430 | machine_data->dai_format = SND_SOC_DAIFMT_AC97; | |
431 | machine_data->codec_clk_direction = SND_SOC_CLOCK_OUT; | |
432 | machine_data->cpu_clk_direction = SND_SOC_CLOCK_IN; | |
433 | } else if (strcasecmp(sprop, "ac97-master") == 0) { | |
434 | machine_data->dai_format = SND_SOC_DAIFMT_AC97; | |
435 | machine_data->codec_clk_direction = SND_SOC_CLOCK_IN; | |
436 | machine_data->cpu_clk_direction = SND_SOC_CLOCK_OUT; | |
437 | } else { | |
f0fba2ad LG |
438 | dev_err(&pdev->dev, |
439 | "unrecognized fsl,mode property '%s'\n", sprop); | |
17467f23 TT |
440 | ret = -EINVAL; |
441 | goto error; | |
442 | } | |
443 | ||
444 | if (!machine_data->clk_frequency) { | |
f0fba2ad | 445 | dev_err(&pdev->dev, "unknown clock frequency\n"); |
17467f23 TT |
446 | ret = -EINVAL; |
447 | goto error; | |
448 | } | |
449 | ||
f0fba2ad LG |
450 | /* Find the playback DMA channel to use. */ |
451 | machine_data->dai[0].platform_name = machine_data->platform_name[0]; | |
452 | ret = get_dma_channel(np, "fsl,playback-dma", &machine_data->dai[0], | |
453 | &machine_data->dma_channel_id[0], | |
454 | &machine_data->dma_id[0]); | |
17467f23 | 455 | if (ret) { |
f0fba2ad | 456 | dev_err(&pdev->dev, "missing/invalid playback DMA phandle\n"); |
17467f23 TT |
457 | goto error; |
458 | } | |
459 | ||
f0fba2ad LG |
460 | /* Find the capture DMA channel to use. */ |
461 | machine_data->dai[1].platform_name = machine_data->platform_name[1]; | |
462 | ret = get_dma_channel(np, "fsl,capture-dma", &machine_data->dai[1], | |
463 | &machine_data->dma_channel_id[1], | |
464 | &machine_data->dma_id[1]); | |
465 | if (ret) { | |
466 | dev_err(&pdev->dev, "missing/invalid capture DMA phandle\n"); | |
17467f23 TT |
467 | goto error; |
468 | } | |
469 | ||
f0fba2ad LG |
470 | /* Initialize our DAI data structure. */ |
471 | machine_data->dai[0].stream_name = "playback"; | |
472 | machine_data->dai[1].stream_name = "capture"; | |
473 | machine_data->dai[0].name = machine_data->dai[0].stream_name; | |
474 | machine_data->dai[1].name = machine_data->dai[1].stream_name; | |
17467f23 | 475 | |
f0fba2ad LG |
476 | machine_data->card.probe = mpc8610_hpcd_machine_probe; |
477 | machine_data->card.remove = mpc8610_hpcd_machine_remove; | |
478 | machine_data->card.name = pdev->name; /* The platform driver name */ | |
479 | machine_data->card.num_links = 2; | |
480 | machine_data->card.dai_link = machine_data->dai; | |
17467f23 TT |
481 | |
482 | /* Allocate a new audio platform device structure */ | |
483 | sound_device = platform_device_alloc("soc-audio", -1); | |
484 | if (!sound_device) { | |
f0fba2ad | 485 | dev_err(&pdev->dev, "platform device alloc failed\n"); |
17467f23 TT |
486 | ret = -ENOMEM; |
487 | goto error; | |
488 | } | |
489 | ||
f0fba2ad LG |
490 | /* Associate the card data with the sound device */ |
491 | platform_set_drvdata(sound_device, &machine_data->card); | |
17467f23 | 492 | |
f0fba2ad | 493 | /* Register with ASoC */ |
17467f23 | 494 | ret = platform_device_add(sound_device); |
17467f23 | 495 | if (ret) { |
f0fba2ad | 496 | dev_err(&pdev->dev, "platform device add failed\n"); |
17467f23 TT |
497 | goto error; |
498 | } | |
67bd489a | 499 | dev_set_drvdata(&pdev->dev, sound_device); |
17467f23 | 500 | |
f0fba2ad | 501 | of_node_put(codec_np); |
17467f23 TT |
502 | |
503 | return 0; | |
504 | ||
505 | error: | |
506 | of_node_put(codec_np); | |
17467f23 TT |
507 | |
508 | if (sound_device) | |
509 | platform_device_unregister(sound_device); | |
510 | ||
17467f23 TT |
511 | kfree(machine_data); |
512 | ||
513 | return ret; | |
514 | } | |
515 | ||
516 | /** | |
f0fba2ad | 517 | * mpc8610_hpcd_remove: remove the platform device |
17467f23 | 518 | * |
f0fba2ad | 519 | * This function is called when the platform device is removed. |
17467f23 | 520 | */ |
f0fba2ad | 521 | static int __devexit mpc8610_hpcd_remove(struct platform_device *pdev) |
17467f23 | 522 | { |
f0fba2ad LG |
523 | struct platform_device *sound_device = dev_get_drvdata(&pdev->dev); |
524 | struct snd_soc_card *card = platform_get_drvdata(sound_device); | |
17467f23 | 525 | struct mpc8610_hpcd_data *machine_data = |
f0fba2ad | 526 | container_of(card, struct mpc8610_hpcd_data, card); |
17467f23 TT |
527 | |
528 | platform_device_unregister(sound_device); | |
529 | ||
17467f23 TT |
530 | kfree(machine_data); |
531 | sound_device->dev.platform_data = NULL; | |
532 | ||
f0fba2ad | 533 | dev_set_drvdata(&pdev->dev, NULL); |
17467f23 TT |
534 | |
535 | return 0; | |
536 | } | |
537 | ||
f0fba2ad LG |
538 | static struct platform_driver mpc8610_hpcd_driver = { |
539 | .probe = mpc8610_hpcd_probe, | |
540 | .remove = __devexit_p(mpc8610_hpcd_remove), | |
4018294b | 541 | .driver = { |
f0fba2ad LG |
542 | /* The name must match the 'model' property in the device tree, |
543 | * in lowercase letters. | |
544 | */ | |
545 | .name = "snd-soc-mpc8610hpcd", | |
4018294b | 546 | .owner = THIS_MODULE, |
4018294b | 547 | }, |
17467f23 TT |
548 | }; |
549 | ||
550 | /** | |
f0fba2ad | 551 | * mpc8610_hpcd_init: machine driver initialization. |
17467f23 TT |
552 | * |
553 | * This function is called when this module is loaded. | |
554 | */ | |
555 | static int __init mpc8610_hpcd_init(void) | |
556 | { | |
f0fba2ad LG |
557 | struct device_node *guts_np; |
558 | struct resource res; | |
17467f23 | 559 | |
f0fba2ad | 560 | pr_info("Freescale MPC8610 HPCD ALSA SoC machine driver\n"); |
17467f23 | 561 | |
f0fba2ad LG |
562 | /* Get the physical address of the global utilities registers */ |
563 | guts_np = of_find_compatible_node(NULL, NULL, "fsl,mpc8610-guts"); | |
564 | if (of_address_to_resource(guts_np, 0, &res)) { | |
565 | pr_err("mpc8610-hpcd: missing/invalid global utilities node\n"); | |
566 | return -EINVAL; | |
567 | } | |
568 | guts_phys = res.start; | |
17467f23 | 569 | |
f0fba2ad | 570 | return platform_driver_register(&mpc8610_hpcd_driver); |
17467f23 TT |
571 | } |
572 | ||
573 | /** | |
f0fba2ad | 574 | * mpc8610_hpcd_exit: machine driver exit |
17467f23 TT |
575 | * |
576 | * This function is called when this driver is unloaded. | |
577 | */ | |
578 | static void __exit mpc8610_hpcd_exit(void) | |
579 | { | |
f0fba2ad | 580 | platform_driver_unregister(&mpc8610_hpcd_driver); |
17467f23 TT |
581 | } |
582 | ||
583 | module_init(mpc8610_hpcd_init); | |
584 | module_exit(mpc8610_hpcd_exit); | |
585 | ||
586 | MODULE_AUTHOR("Timur Tabi <timur@freescale.com>"); | |
f0fba2ad LG |
587 | MODULE_DESCRIPTION("Freescale MPC8610 HPCD ALSA SoC machine driver"); |
588 | MODULE_LICENSE("GPL v2"); |