projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| abd3147e KM |
1 | /* |
| 2 | * simple-card-core.c | |
| 3 | * | |
| 4 | * Copyright (c) 2016 Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> | |
| 5 | * | |
| 6 | * This program is free software; you can redistribute it and/or modify | |
| 7 | * it under the terms of the GNU General Public License version 2 as | |
| 8 | * published by the Free Software Foundation. | |
| 9 | */ | |
| 10 | #include <linux/of.h> | |
| 11 | #include <sound/simple_card_utils.h> | |
| 12 | ||
| 13 | int asoc_simple_card_parse_daifmt(struct device *dev, | |
| 14 | struct device_node *node, | |
| 15 | struct device_node *codec, | |
| 16 | char *prefix, | |
| 17 | unsigned int *retfmt) | |
| 18 | { | |
| 19 | struct device_node *bitclkmaster = NULL; | |
| 20 | struct device_node *framemaster = NULL; | |
| 21 | int prefix_len = prefix ? strlen(prefix) : 0; | |
| 22 | unsigned int daifmt; | |
| 23 | ||
| 24 | daifmt = snd_soc_of_parse_daifmt(node, prefix, | |
| 25 | &bitclkmaster, &framemaster); | |
| 26 | daifmt &= ~SND_SOC_DAIFMT_MASTER_MASK; | |
| 27 | ||
| 28 | if (prefix_len && !bitclkmaster && !framemaster) { | |
| 29 | /* | |
| 30 | * No dai-link level and master setting was not found from | |
| 31 | * sound node level, revert back to legacy DT parsing and | |
| 32 | * take the settings from codec node. | |
| 33 | */ | |
| 34 | dev_dbg(dev, "Revert to legacy daifmt parsing\n"); | |
| 35 | ||
| 36 | daifmt = snd_soc_of_parse_daifmt(codec, NULL, NULL, NULL) | | |
| 37 | (daifmt & ~SND_SOC_DAIFMT_CLOCK_MASK); | |
| 38 | } else { | |
| 39 | if (codec == bitclkmaster) | |
| 40 | daifmt |= (codec == framemaster) ? | |
| 41 | SND_SOC_DAIFMT_CBM_CFM : SND_SOC_DAIFMT_CBM_CFS; | |
| 42 | else | |
| 43 | daifmt |= (codec == framemaster) ? | |
| 44 | SND_SOC_DAIFMT_CBS_CFM : SND_SOC_DAIFMT_CBS_CFS; | |
| 45 | } | |
| 46 | ||
| 47 | of_node_put(bitclkmaster); | |
| 48 | of_node_put(framemaster); | |
| 49 | ||
| 50 | *retfmt = daifmt; | |
| 51 | ||
| 52 | return 0; | |
| 53 | } | |
| 54 | EXPORT_SYMBOL_GPL(asoc_simple_card_parse_daifmt); |