Commit | Line | Data |
---|---|---|
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> |
6132725e | 17 | #include <linux/of_i2c.h> |
17467f23 | 18 | #include <sound/soc.h> |
6e6f6622 | 19 | #include <asm/fsl_guts.h> |
17467f23 | 20 | |
17467f23 TT |
21 | #include "fsl_dma.h" |
22 | #include "fsl_ssi.h" | |
23 | ||
f0fba2ad LG |
24 | /* There's only one global utilities register */ |
25 | static phys_addr_t guts_phys; | |
26 | ||
27 | #define DAI_NAME_SIZE 32 | |
28 | ||
17467f23 | 29 | /** |
f0fba2ad | 30 | * mpc8610_hpcd_data: machine-specific ASoC device data |
17467f23 TT |
31 | * |
32 | * This structure contains data for a single sound platform device on an | |
33 | * MPC8610 HPCD. Some of the data is taken from the device tree. | |
34 | */ | |
35 | struct mpc8610_hpcd_data { | |
f0fba2ad LG |
36 | struct snd_soc_dai_link dai[2]; |
37 | struct snd_soc_card card; | |
17467f23 TT |
38 | unsigned int dai_format; |
39 | unsigned int codec_clk_direction; | |
40 | unsigned int cpu_clk_direction; | |
41 | unsigned int clk_frequency; | |
f0fba2ad LG |
42 | unsigned int ssi_id; /* 0 = SSI1, 1 = SSI2, etc */ |
43 | unsigned int dma_id[2]; /* 0 = DMA1, 1 = DMA2, etc */ | |
17467f23 | 44 | unsigned int dma_channel_id[2]; /* 0 = ch 0, 1 = ch 1, etc*/ |
f0fba2ad LG |
45 | char codec_dai_name[DAI_NAME_SIZE]; |
46 | char codec_name[DAI_NAME_SIZE]; | |
47 | char platform_name[2][DAI_NAME_SIZE]; /* One for each DMA channel */ | |
17467f23 TT |
48 | }; |
49 | ||
50 | /** | |
f0fba2ad | 51 | * mpc8610_hpcd_machine_probe: initialize the board |
17467f23 | 52 | * |
f0fba2ad | 53 | * This function is used to initialize the board-specific hardware. |
17467f23 TT |
54 | * |
55 | * Here we program the DMACR and PMUXCR registers. | |
56 | */ | |
e7361ec4 | 57 | static int mpc8610_hpcd_machine_probe(struct snd_soc_card *card) |
17467f23 TT |
58 | { |
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 | */ | |
e7361ec4 | 141 | static int mpc8610_hpcd_machine_remove(struct snd_soc_card *card) |
17467f23 TT |
142 | { |
143 | struct mpc8610_hpcd_data *machine_data = | |
f0fba2ad | 144 | container_of(card, struct mpc8610_hpcd_data, card); |
6e6f6622 | 145 | struct ccsr_guts_86xx __iomem *guts; |
f0fba2ad | 146 | |
6e6f6622 | 147 | guts = ioremap(guts_phys, sizeof(struct ccsr_guts_86xx)); |
f0fba2ad LG |
148 | if (!guts) { |
149 | dev_err(card->dev, "could not map global utilities\n"); | |
150 | return -ENOMEM; | |
151 | } | |
17467f23 TT |
152 | |
153 | /* Restore the signal routing */ | |
154 | ||
f0fba2ad LG |
155 | guts_set_dmacr(guts, machine_data->dma_id[0], |
156 | machine_data->dma_channel_id[0], 0); | |
157 | guts_set_dmacr(guts, machine_data->dma_id[1], | |
158 | machine_data->dma_channel_id[1], 0); | |
17467f23 TT |
159 | |
160 | switch (machine_data->ssi_id) { | |
161 | case 0: | |
f0fba2ad | 162 | clrsetbits_be32(&guts->pmuxcr, |
17467f23 TT |
163 | CCSR_GUTS_PMUXCR_SSI1_MASK, CCSR_GUTS_PMUXCR_SSI1_LA); |
164 | break; | |
165 | case 1: | |
f0fba2ad | 166 | clrsetbits_be32(&guts->pmuxcr, |
83544994 | 167 | CCSR_GUTS_PMUXCR_SSI2_MASK, CCSR_GUTS_PMUXCR_SSI2_LA); |
17467f23 TT |
168 | break; |
169 | } | |
170 | ||
f0fba2ad LG |
171 | iounmap(guts); |
172 | ||
17467f23 TT |
173 | return 0; |
174 | } | |
175 | ||
176 | /** | |
f0fba2ad | 177 | * mpc8610_hpcd_ops: ASoC machine driver operations |
17467f23 TT |
178 | */ |
179 | static struct snd_soc_ops mpc8610_hpcd_ops = { | |
180 | .startup = mpc8610_hpcd_startup, | |
181 | }; | |
182 | ||
17467f23 | 183 | /** |
f0fba2ad | 184 | * get_node_by_phandle_name - get a node by its phandle name |
17467f23 | 185 | * |
f0fba2ad LG |
186 | * This function takes a node, the name of a property in that node, and a |
187 | * compatible string. Assuming the property is a phandle to another node, | |
188 | * it returns that node, (optionally) if that node is compatible. | |
17467f23 | 189 | * |
f0fba2ad LG |
190 | * If the property is not a phandle, or the node it points to is not compatible |
191 | * with the specific string, then NULL is returned. | |
192 | */ | |
193 | static struct device_node *get_node_by_phandle_name(struct device_node *np, | |
194 | const char *name, | |
195 | const char *compatible) | |
196 | { | |
197 | const phandle *ph; | |
198 | int len; | |
199 | ||
200 | ph = of_get_property(np, name, &len); | |
201 | if (!ph || (len != sizeof(phandle))) | |
202 | return NULL; | |
203 | ||
204 | np = of_find_node_by_phandle(*ph); | |
205 | if (!np) | |
206 | return NULL; | |
207 | ||
208 | if (compatible && !of_device_is_compatible(np, compatible)) { | |
209 | of_node_put(np); | |
210 | return NULL; | |
211 | } | |
212 | ||
213 | return np; | |
214 | } | |
215 | ||
216 | /** | |
217 | * get_parent_cell_index -- return the cell-index of the parent of a node | |
17467f23 | 218 | * |
f0fba2ad LG |
219 | * Return the value of the cell-index property of the parent of the given |
220 | * node. This is used for DMA channel nodes that need to know the DMA ID | |
221 | * of the controller they are on. | |
222 | */ | |
223 | static int get_parent_cell_index(struct device_node *np) | |
224 | { | |
225 | struct device_node *parent = of_get_parent(np); | |
226 | const u32 *iprop; | |
227 | ||
228 | if (!parent) | |
229 | return -1; | |
230 | ||
231 | iprop = of_get_property(parent, "cell-index", NULL); | |
232 | of_node_put(parent); | |
233 | ||
234 | if (!iprop) | |
235 | return -1; | |
236 | ||
147dfe90 | 237 | return be32_to_cpup(iprop); |
f0fba2ad LG |
238 | } |
239 | ||
240 | /** | |
241 | * codec_node_dev_name - determine the dev_name for a codec node | |
17467f23 | 242 | * |
f0fba2ad LG |
243 | * This function determines the dev_name for an I2C node. This is the name |
244 | * that would be returned by dev_name() if this device_node were part of a | |
245 | * 'struct device' It's ugly and hackish, but it works. | |
246 | * | |
247 | * The dev_name for such devices include the bus number and I2C address. For | |
64902b29 | 248 | * example, "cs4270.0-004f". |
17467f23 | 249 | */ |
f0fba2ad | 250 | static int codec_node_dev_name(struct device_node *np, char *buf, size_t len) |
17467f23 | 251 | { |
17467f23 | 252 | const u32 *iprop; |
6132725e | 253 | int addr; |
f0fba2ad | 254 | char temp[DAI_NAME_SIZE]; |
6132725e | 255 | struct i2c_client *i2c; |
f0fba2ad LG |
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 | ||
147dfe90 | 263 | addr = be32_to_cpup(iprop); |
f0fba2ad | 264 | |
6132725e TT |
265 | /* We need the adapter number */ |
266 | i2c = of_find_i2c_device_by_node(np); | |
267 | if (!i2c) | |
268 | return -ENODEV; | |
f0fba2ad | 269 | |
64902b29 | 270 | snprintf(buf, len, "%s.%u-%04x", temp, i2c->adapter->nr, addr); |
f0fba2ad LG |
271 | |
272 | return 0; | |
273 | } | |
274 | ||
275 | static int get_dma_channel(struct device_node *ssi_np, | |
fb1a6453 | 276 | const char *name, |
f0fba2ad LG |
277 | struct snd_soc_dai_link *dai, |
278 | unsigned int *dma_channel_id, | |
279 | unsigned int *dma_id) | |
280 | { | |
17467f23 | 281 | struct resource res; |
f0fba2ad LG |
282 | struct device_node *dma_channel_np; |
283 | const u32 *iprop; | |
284 | int ret; | |
285 | ||
fb1a6453 | 286 | dma_channel_np = get_node_by_phandle_name(ssi_np, name, |
f0fba2ad LG |
287 | "fsl,ssi-dma-channel"); |
288 | if (!dma_channel_np) | |
289 | return -EINVAL; | |
290 | ||
291 | /* Determine the dev_name for the device_node. This code mimics the | |
292 | * behavior of of_device_make_bus_id(). We need this because ASoC uses | |
293 | * the dev_name() of the device to match the platform (DMA) device with | |
294 | * the CPU (SSI) device. It's all ugly and hackish, but it works (for | |
295 | * now). | |
296 | * | |
297 | * dai->platform name should already point to an allocated buffer. | |
298 | */ | |
299 | ret = of_address_to_resource(dma_channel_np, 0, &res); | |
300 | if (ret) | |
301 | return ret; | |
302 | snprintf((char *)dai->platform_name, DAI_NAME_SIZE, "%llx.%s", | |
303 | (unsigned long long) res.start, dma_channel_np->name); | |
304 | ||
305 | iprop = of_get_property(dma_channel_np, "cell-index", NULL); | |
306 | if (!iprop) { | |
307 | of_node_put(dma_channel_np); | |
308 | return -EINVAL; | |
309 | } | |
310 | ||
147dfe90 | 311 | *dma_channel_id = be32_to_cpup(iprop); |
f0fba2ad LG |
312 | *dma_id = get_parent_cell_index(dma_channel_np); |
313 | of_node_put(dma_channel_np); | |
314 | ||
315 | return 0; | |
316 | } | |
317 | ||
318 | /** | |
319 | * mpc8610_hpcd_probe: platform probe function for the machine driver | |
320 | * | |
321 | * Although this is a machine driver, the SSI node is the "master" node with | |
322 | * respect to audio hardware connections. Therefore, we create a new ASoC | |
323 | * device for each new SSI node that has a codec attached. | |
324 | */ | |
325 | static int mpc8610_hpcd_probe(struct platform_device *pdev) | |
326 | { | |
327 | struct device *dev = pdev->dev.parent; | |
38fec727 TT |
328 | /* ssi_pdev is the platform device for the SSI node that probed us */ |
329 | struct platform_device *ssi_pdev = | |
330 | container_of(dev, struct platform_device, dev); | |
331 | struct device_node *np = ssi_pdev->dev.of_node; | |
f0fba2ad | 332 | struct device_node *codec_np = NULL; |
17467f23 TT |
333 | struct platform_device *sound_device = NULL; |
334 | struct mpc8610_hpcd_data *machine_data; | |
17467f23 | 335 | int ret = -ENODEV; |
f0fba2ad LG |
336 | const char *sprop; |
337 | const u32 *iprop; | |
338 | ||
7c59bc55 SG |
339 | /* Find the codec node for this SSI. */ |
340 | codec_np = of_parse_phandle(np, "codec-handle", 0); | |
f0fba2ad LG |
341 | if (!codec_np) { |
342 | dev_err(dev, "invalid codec node\n"); | |
343 | return -EINVAL; | |
344 | } | |
17467f23 TT |
345 | |
346 | machine_data = kzalloc(sizeof(struct mpc8610_hpcd_data), GFP_KERNEL); | |
c09f5ca7 JL |
347 | if (!machine_data) { |
348 | ret = -ENOMEM; | |
349 | goto error_alloc; | |
350 | } | |
17467f23 | 351 | |
38fec727 | 352 | machine_data->dai[0].cpu_dai_name = dev_name(&ssi_pdev->dev); |
f0fba2ad | 353 | machine_data->dai[0].ops = &mpc8610_hpcd_ops; |
17467f23 | 354 | |
f0fba2ad LG |
355 | /* Determine the codec name, it will be used as the codec DAI name */ |
356 | ret = codec_node_dev_name(codec_np, machine_data->codec_name, | |
357 | DAI_NAME_SIZE); | |
358 | if (ret) { | |
359 | dev_err(&pdev->dev, "invalid codec node %s\n", | |
360 | codec_np->full_name); | |
361 | ret = -EINVAL; | |
17467f23 | 362 | goto error; |
f0fba2ad LG |
363 | } |
364 | machine_data->dai[0].codec_name = machine_data->codec_name; | |
17467f23 | 365 | |
f0fba2ad LG |
366 | /* The DAI name from the codec (snd_soc_dai_driver.name) */ |
367 | machine_data->dai[0].codec_dai_name = "cs4270-hifi"; | |
17467f23 | 368 | |
f0fba2ad LG |
369 | /* We register two DAIs per SSI, one for playback and the other for |
370 | * capture. Currently, we only support codecs that have one DAI for | |
371 | * both playback and capture. | |
372 | */ | |
373 | memcpy(&machine_data->dai[1], &machine_data->dai[0], | |
374 | sizeof(struct snd_soc_dai_link)); | |
17467f23 TT |
375 | |
376 | /* Get the device ID */ | |
377 | iprop = of_get_property(np, "cell-index", NULL); | |
378 | if (!iprop) { | |
f0fba2ad | 379 | dev_err(&pdev->dev, "cell-index property not found\n"); |
17467f23 TT |
380 | ret = -EINVAL; |
381 | goto error; | |
382 | } | |
147dfe90 | 383 | machine_data->ssi_id = be32_to_cpup(iprop); |
17467f23 TT |
384 | |
385 | /* Get the serial format and clock direction. */ | |
386 | sprop = of_get_property(np, "fsl,mode", NULL); | |
387 | if (!sprop) { | |
f0fba2ad | 388 | dev_err(&pdev->dev, "fsl,mode property not found\n"); |
17467f23 TT |
389 | ret = -EINVAL; |
390 | goto error; | |
391 | } | |
392 | ||
393 | if (strcasecmp(sprop, "i2s-slave") == 0) { | |
380c8830 TT |
394 | machine_data->dai_format = |
395 | SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBM_CFM; | |
17467f23 TT |
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 | } | |
147dfe90 | 410 | machine_data->clk_frequency = be32_to_cpup(iprop); |
17467f23 | 411 | } else if (strcasecmp(sprop, "i2s-master") == 0) { |
380c8830 TT |
412 | machine_data->dai_format = |
413 | SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_CBS_CFS; | |
17467f23 TT |
414 | machine_data->codec_clk_direction = SND_SOC_CLOCK_IN; |
415 | machine_data->cpu_clk_direction = SND_SOC_CLOCK_OUT; | |
416 | } else if (strcasecmp(sprop, "lj-slave") == 0) { | |
380c8830 TT |
417 | machine_data->dai_format = |
418 | SND_SOC_DAIFMT_LEFT_J | SND_SOC_DAIFMT_CBM_CFM; | |
17467f23 TT |
419 | machine_data->codec_clk_direction = SND_SOC_CLOCK_OUT; |
420 | machine_data->cpu_clk_direction = SND_SOC_CLOCK_IN; | |
421 | } else if (strcasecmp(sprop, "lj-master") == 0) { | |
380c8830 TT |
422 | machine_data->dai_format = |
423 | SND_SOC_DAIFMT_LEFT_J | SND_SOC_DAIFMT_CBS_CFS; | |
17467f23 TT |
424 | machine_data->codec_clk_direction = SND_SOC_CLOCK_IN; |
425 | machine_data->cpu_clk_direction = SND_SOC_CLOCK_OUT; | |
e5c21571 | 426 | } else if (strcasecmp(sprop, "rj-slave") == 0) { |
380c8830 TT |
427 | machine_data->dai_format = |
428 | SND_SOC_DAIFMT_RIGHT_J | SND_SOC_DAIFMT_CBM_CFM; | |
17467f23 TT |
429 | machine_data->codec_clk_direction = SND_SOC_CLOCK_OUT; |
430 | machine_data->cpu_clk_direction = SND_SOC_CLOCK_IN; | |
431 | } else if (strcasecmp(sprop, "rj-master") == 0) { | |
380c8830 TT |
432 | machine_data->dai_format = |
433 | SND_SOC_DAIFMT_RIGHT_J | SND_SOC_DAIFMT_CBS_CFS; | |
17467f23 TT |
434 | machine_data->codec_clk_direction = SND_SOC_CLOCK_IN; |
435 | machine_data->cpu_clk_direction = SND_SOC_CLOCK_OUT; | |
436 | } else if (strcasecmp(sprop, "ac97-slave") == 0) { | |
380c8830 TT |
437 | machine_data->dai_format = |
438 | SND_SOC_DAIFMT_AC97 | SND_SOC_DAIFMT_CBM_CFM; | |
17467f23 TT |
439 | machine_data->codec_clk_direction = SND_SOC_CLOCK_OUT; |
440 | machine_data->cpu_clk_direction = SND_SOC_CLOCK_IN; | |
441 | } else if (strcasecmp(sprop, "ac97-master") == 0) { | |
380c8830 TT |
442 | machine_data->dai_format = |
443 | SND_SOC_DAIFMT_AC97 | SND_SOC_DAIFMT_CBS_CFS; | |
17467f23 TT |
444 | machine_data->codec_clk_direction = SND_SOC_CLOCK_IN; |
445 | machine_data->cpu_clk_direction = SND_SOC_CLOCK_OUT; | |
446 | } else { | |
f0fba2ad LG |
447 | dev_err(&pdev->dev, |
448 | "unrecognized fsl,mode property '%s'\n", sprop); | |
17467f23 TT |
449 | ret = -EINVAL; |
450 | goto error; | |
451 | } | |
452 | ||
453 | if (!machine_data->clk_frequency) { | |
f0fba2ad | 454 | dev_err(&pdev->dev, "unknown clock frequency\n"); |
17467f23 TT |
455 | ret = -EINVAL; |
456 | goto error; | |
457 | } | |
458 | ||
f0fba2ad LG |
459 | /* Find the playback DMA channel to use. */ |
460 | machine_data->dai[0].platform_name = machine_data->platform_name[0]; | |
461 | ret = get_dma_channel(np, "fsl,playback-dma", &machine_data->dai[0], | |
462 | &machine_data->dma_channel_id[0], | |
463 | &machine_data->dma_id[0]); | |
17467f23 | 464 | if (ret) { |
f0fba2ad | 465 | dev_err(&pdev->dev, "missing/invalid playback DMA phandle\n"); |
17467f23 TT |
466 | goto error; |
467 | } | |
468 | ||
f0fba2ad LG |
469 | /* Find the capture DMA channel to use. */ |
470 | machine_data->dai[1].platform_name = machine_data->platform_name[1]; | |
471 | ret = get_dma_channel(np, "fsl,capture-dma", &machine_data->dai[1], | |
472 | &machine_data->dma_channel_id[1], | |
473 | &machine_data->dma_id[1]); | |
474 | if (ret) { | |
475 | dev_err(&pdev->dev, "missing/invalid capture DMA phandle\n"); | |
17467f23 TT |
476 | goto error; |
477 | } | |
478 | ||
f0fba2ad LG |
479 | /* Initialize our DAI data structure. */ |
480 | machine_data->dai[0].stream_name = "playback"; | |
481 | machine_data->dai[1].stream_name = "capture"; | |
482 | machine_data->dai[0].name = machine_data->dai[0].stream_name; | |
483 | machine_data->dai[1].name = machine_data->dai[1].stream_name; | |
17467f23 | 484 | |
f0fba2ad LG |
485 | machine_data->card.probe = mpc8610_hpcd_machine_probe; |
486 | machine_data->card.remove = mpc8610_hpcd_machine_remove; | |
487 | machine_data->card.name = pdev->name; /* The platform driver name */ | |
488 | machine_data->card.num_links = 2; | |
489 | machine_data->card.dai_link = machine_data->dai; | |
17467f23 TT |
490 | |
491 | /* Allocate a new audio platform device structure */ | |
492 | sound_device = platform_device_alloc("soc-audio", -1); | |
493 | if (!sound_device) { | |
f0fba2ad | 494 | dev_err(&pdev->dev, "platform device alloc failed\n"); |
17467f23 TT |
495 | ret = -ENOMEM; |
496 | goto error; | |
497 | } | |
498 | ||
f0fba2ad LG |
499 | /* Associate the card data with the sound device */ |
500 | platform_set_drvdata(sound_device, &machine_data->card); | |
17467f23 | 501 | |
f0fba2ad | 502 | /* Register with ASoC */ |
17467f23 | 503 | ret = platform_device_add(sound_device); |
17467f23 | 504 | if (ret) { |
f0fba2ad | 505 | dev_err(&pdev->dev, "platform device add failed\n"); |
c09f5ca7 | 506 | goto error_sound; |
17467f23 | 507 | } |
67bd489a | 508 | dev_set_drvdata(&pdev->dev, sound_device); |
17467f23 | 509 | |
f0fba2ad | 510 | of_node_put(codec_np); |
17467f23 TT |
511 | |
512 | return 0; | |
513 | ||
c09f5ca7 | 514 | error_sound: |
d890a1a4 | 515 | platform_device_put(sound_device); |
17467f23 | 516 | error: |
17467f23 | 517 | kfree(machine_data); |
c09f5ca7 JL |
518 | error_alloc: |
519 | of_node_put(codec_np); | |
17467f23 TT |
520 | return ret; |
521 | } | |
522 | ||
523 | /** | |
f0fba2ad | 524 | * mpc8610_hpcd_remove: remove the platform device |
17467f23 | 525 | * |
f0fba2ad | 526 | * This function is called when the platform device is removed. |
17467f23 | 527 | */ |
f0fba2ad | 528 | static int __devexit mpc8610_hpcd_remove(struct platform_device *pdev) |
17467f23 | 529 | { |
f0fba2ad LG |
530 | struct platform_device *sound_device = dev_get_drvdata(&pdev->dev); |
531 | struct snd_soc_card *card = platform_get_drvdata(sound_device); | |
17467f23 | 532 | struct mpc8610_hpcd_data *machine_data = |
f0fba2ad | 533 | container_of(card, struct mpc8610_hpcd_data, card); |
17467f23 TT |
534 | |
535 | platform_device_unregister(sound_device); | |
536 | ||
17467f23 TT |
537 | kfree(machine_data); |
538 | sound_device->dev.platform_data = NULL; | |
539 | ||
f0fba2ad | 540 | dev_set_drvdata(&pdev->dev, NULL); |
17467f23 TT |
541 | |
542 | return 0; | |
543 | } | |
544 | ||
f0fba2ad LG |
545 | static struct platform_driver mpc8610_hpcd_driver = { |
546 | .probe = mpc8610_hpcd_probe, | |
547 | .remove = __devexit_p(mpc8610_hpcd_remove), | |
4018294b | 548 | .driver = { |
2b81ec69 | 549 | /* The name must match 'compatible' property in the device tree, |
f0fba2ad LG |
550 | * in lowercase letters. |
551 | */ | |
552 | .name = "snd-soc-mpc8610hpcd", | |
4018294b | 553 | .owner = THIS_MODULE, |
4018294b | 554 | }, |
17467f23 TT |
555 | }; |
556 | ||
557 | /** | |
f0fba2ad | 558 | * mpc8610_hpcd_init: machine driver initialization. |
17467f23 TT |
559 | * |
560 | * This function is called when this module is loaded. | |
561 | */ | |
562 | static int __init mpc8610_hpcd_init(void) | |
563 | { | |
f0fba2ad LG |
564 | struct device_node *guts_np; |
565 | struct resource res; | |
17467f23 | 566 | |
f0fba2ad | 567 | pr_info("Freescale MPC8610 HPCD ALSA SoC machine driver\n"); |
17467f23 | 568 | |
f0fba2ad LG |
569 | /* Get the physical address of the global utilities registers */ |
570 | guts_np = of_find_compatible_node(NULL, NULL, "fsl,mpc8610-guts"); | |
571 | if (of_address_to_resource(guts_np, 0, &res)) { | |
572 | pr_err("mpc8610-hpcd: missing/invalid global utilities node\n"); | |
573 | return -EINVAL; | |
574 | } | |
575 | guts_phys = res.start; | |
17467f23 | 576 | |
f0fba2ad | 577 | return platform_driver_register(&mpc8610_hpcd_driver); |
17467f23 TT |
578 | } |
579 | ||
580 | /** | |
f0fba2ad | 581 | * mpc8610_hpcd_exit: machine driver exit |
17467f23 TT |
582 | * |
583 | * This function is called when this driver is unloaded. | |
584 | */ | |
585 | static void __exit mpc8610_hpcd_exit(void) | |
586 | { | |
f0fba2ad | 587 | platform_driver_unregister(&mpc8610_hpcd_driver); |
17467f23 TT |
588 | } |
589 | ||
590 | module_init(mpc8610_hpcd_init); | |
591 | module_exit(mpc8610_hpcd_exit); | |
592 | ||
593 | MODULE_AUTHOR("Timur Tabi <timur@freescale.com>"); | |
f0fba2ad LG |
594 | MODULE_DESCRIPTION("Freescale MPC8610 HPCD ALSA SoC machine driver"); |
595 | MODULE_LICENSE("GPL v2"); |