diff options
Diffstat (limited to 'target/linux/omap/patches-3.12/401-ASoC-davinci-evm-Add-device-tree-binding.patch')
| -rw-r--r-- | target/linux/omap/patches-3.12/401-ASoC-davinci-evm-Add-device-tree-binding.patch | 261 |
1 files changed, 261 insertions, 0 deletions
diff --git a/target/linux/omap/patches-3.12/401-ASoC-davinci-evm-Add-device-tree-binding.patch b/target/linux/omap/patches-3.12/401-ASoC-davinci-evm-Add-device-tree-binding.patch new file mode 100644 index 0000000000..a3cbfb7bc5 --- /dev/null +++ b/target/linux/omap/patches-3.12/401-ASoC-davinci-evm-Add-device-tree-binding.patch @@ -0,0 +1,261 @@ +From af9ef849e8700327b807361344427a43c38e823a Mon Sep 17 00:00:00 2001 +From: "Hebbar, Gururaja" <gururaja.hebbar@ti.com> +Date: Tue, 31 Jul 2012 21:25:38 +0530 +Subject: [PATCH 212/752] ASoC: davinci-evm: Add device tree binding + +Device tree support for Davinci Machine driver + +When the board boots with device tree, the driver will receive card, +codec, dai interface details (like the card name, DAPM routing map, +phandle for the audio components described in the dts file, codec mclk +speed). The card will be set up based on this information. Since the +routing is provided via DT we can mark the card fully routed so core +can take care of disconnecting the unused pins. + +Signed-off-by: Hebbar, Gururaja <gururaja.hebbar@ti.com> +Signed-off-by: Darren Etheridge <detheridge@ti.com> +Signed-off-by: Jyri Sarha <jsarha@ti.com> +--- + .../bindings/sound/davinci-evm-audio.txt | 58 ++++++++++ + sound/soc/davinci/davinci-evm.c | 120 +++++++++++++++++++- + 2 files changed, 176 insertions(+), 2 deletions(-) + create mode 100644 Documentation/devicetree/bindings/sound/davinci-evm-audio.txt + +diff --git a/Documentation/devicetree/bindings/sound/davinci-evm-audio.txt b/Documentation/devicetree/bindings/sound/davinci-evm-audio.txt +new file mode 100644 +index 0000000..e6b61ff +--- /dev/null ++++ b/Documentation/devicetree/bindings/sound/davinci-evm-audio.txt +@@ -0,0 +1,58 @@ ++* Texas Instruments SoC audio setups with TLV320AIC3X Codec ++ ++Required properties: ++- compatible : "ti,da830-evm-audio" : forDM365/DA8xx/OMAPL1x/AM33xx ++- ti,model : The user-visible name of this sound complex. ++- ti,audio-codec : The phandle of the TLV320AIC3x audio codec ++- ti,mcasp-controller : The phandle of the McASP controller ++- ti,codec-clock-rate : The Codec Clock rate (in Hz) applied to the Codec ++- ti,audio-routing : A list of the connections between audio components. ++ Each entry is a pair of strings, the first being the connection's sink, ++ the second being the connection's source. Valid names for sources and ++ sinks are the codec's pins, and the jacks on the board: ++ ++ TLV320AIC3X pins: ++ ++ * LLOUT ++ * RLOUT ++ * MONO_LOUT ++ * HPLOUT ++ * HPROUT ++ * HPLCOM ++ * HPRCOM ++ * MIC3L ++ * MIC3R ++ * LINE1L ++ * LINE2L ++ * LINE1R ++ * LINE2R ++ ++ Board connectors: ++ ++ * Headphone Jack ++ * Line Out ++ * Mic Jack ++ * Line In ++ ++ ++Example: ++ ++sound { ++ compatible = "ti,da830-evm-audio"; ++ ti,model = "DA830 EVM"; ++ ti,audio-codec = <&tlv320aic3x>; ++ ti,mcasp-controller = <&mcasp1>; ++ ti,codec-clock-rate = <12000000>; ++ ti,audio-routing = ++ "Headphone Jack", "HPLOUT", ++ "Headphone Jack", "HPROUT", ++ "Line Out", "LLOUT", ++ "Line Out", "RLOUT", ++ "MIC3L", "Mic Bias 2V", ++ "MIC3R", "Mic Bias 2V", ++ "Mic Bias 2V", "Mic Jack", ++ "LINE1L", "Line In", ++ "LINE2L", "Line In", ++ "LINE1R", "Line In", ++ "LINE2R", "Line In"; ++}; +diff --git a/sound/soc/davinci/davinci-evm.c b/sound/soc/davinci/davinci-evm.c +index 2f8161c..340a68d 100644 +--- a/sound/soc/davinci/davinci-evm.c ++++ b/sound/soc/davinci/davinci-evm.c +@@ -16,6 +16,7 @@ + #include <linux/platform_device.h> + #include <linux/platform_data/edma.h> + #include <linux/i2c.h> ++#include <linux/of_platform.h> + #include <sound/core.h> + #include <sound/pcm.h> + #include <sound/soc.h> +@@ -23,6 +24,8 @@ + #include <asm/dma.h> + #include <asm/mach-types.h> + ++#include <linux/edma.h> ++ + #include "davinci-pcm.h" + #include "davinci-i2s.h" + #include "davinci-mcasp.h" +@@ -121,13 +124,22 @@ static int evm_aic3x_init(struct snd_soc_pcm_runtime *rtd) + { + struct snd_soc_codec *codec = rtd->codec; + struct snd_soc_dapm_context *dapm = &codec->dapm; ++ struct device_node *np = codec->card->dev->of_node; ++ int ret; + + /* Add davinci-evm specific widgets */ + snd_soc_dapm_new_controls(dapm, aic3x_dapm_widgets, + ARRAY_SIZE(aic3x_dapm_widgets)); + +- /* Set up davinci-evm specific audio path audio_map */ +- snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map)); ++ if (np) { ++ ret = snd_soc_of_parse_audio_routing(codec->card, ++ "ti,audio-routing"); ++ if (ret) ++ return ret; ++ } else { ++ /* Set up davinci-evm specific audio path audio_map */ ++ snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map)); ++ } + + /* not connected */ + snd_soc_dapm_disable_pin(dapm, "MONO_LOUT"); +@@ -312,6 +324,98 @@ static struct snd_soc_card da850_snd_soc_card = { + .drvdata = &da850_snd_soc_card_drvdata, + }; + ++#if defined(CONFIG_OF) ++ ++/* ++ * The struct is used as place holder. It will be completely ++ * filled with data from dt node. ++ */ ++static struct snd_soc_dai_link evm_dai_tlv320aic3x = { ++ .name = "TLV320AIC3X", ++ .stream_name = "AIC3X", ++ .codec_dai_name = "tlv320aic3x-hifi", ++ .ops = &evm_ops, ++ .init = evm_aic3x_init, ++}; ++ ++static const struct of_device_id davinci_evm_dt_ids[] = { ++ { ++ .compatible = "ti,da830-evm-audio", ++ .data = (void *) &evm_dai_tlv320aic3x, ++ }, ++ { /* sentinel */ } ++}; ++MODULE_DEVICE_TABLE(of, davinci_evm_dt_ids); ++ ++/* davinci evm audio machine driver */ ++static struct snd_soc_card evm_soc_card = { ++ .owner = THIS_MODULE, ++ .num_links = 1, ++}; ++ ++static int davinci_evm_probe(struct platform_device *pdev) ++{ ++ struct device_node *np = pdev->dev.of_node; ++ const struct of_device_id *match = ++ of_match_device(of_match_ptr(davinci_evm_dt_ids), &pdev->dev); ++ struct snd_soc_dai_link *dai = (struct snd_soc_dai_link *) match->data; ++ struct snd_soc_card_drvdata_davinci *drvdata = NULL; ++ int ret = 0; ++ ++ evm_soc_card.dai_link = dai; ++ ++ dai->codec_of_node = of_parse_phandle(np, "ti,audio-codec", 0); ++ if (!dai->codec_of_node) ++ return -EINVAL; ++ ++ dai->cpu_of_node = of_parse_phandle(np, "ti,mcasp-controller", 0); ++ if (!dai->cpu_of_node) ++ return -EINVAL; ++ ++ dai->platform_of_node = dai->cpu_of_node; ++ ++ evm_soc_card.dev = &pdev->dev; ++ ret = snd_soc_of_parse_card_name(&evm_soc_card, "ti,model"); ++ if (ret) ++ return ret; ++ ++ drvdata = devm_kzalloc(&pdev->dev, sizeof(*drvdata), GFP_KERNEL); ++ if (!drvdata) ++ return -ENOMEM; ++ ++ ret = of_property_read_u32(np, "ti,codec-clock-rate", &drvdata->sysclk); ++ if (ret < 0) ++ return -EINVAL; ++ ++ snd_soc_card_set_drvdata(&evm_soc_card, drvdata); ++ ret = snd_soc_register_card(&evm_soc_card); ++ ++ if (ret) ++ dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret); ++ ++ return ret; ++} ++ ++static int davinci_evm_remove(struct platform_device *pdev) ++{ ++ struct snd_soc_card *card = platform_get_drvdata(pdev); ++ ++ snd_soc_unregister_card(card); ++ ++ return 0; ++} ++ ++static struct platform_driver davinci_evm_driver = { ++ .probe = davinci_evm_probe, ++ .remove = davinci_evm_remove, ++ .driver = { ++ .name = "davinci_evm", ++ .owner = THIS_MODULE, ++ .of_match_table = of_match_ptr(davinci_evm_dt_ids), ++ }, ++}; ++#endif ++ + static struct platform_device *evm_snd_device; + + static int __init evm_init(void) +@@ -320,6 +424,13 @@ static int __init evm_init(void) + int index; + int ret; + ++ /* ++ * If dtb is there, the devices will be created dynamically. ++ * Only register platfrom driver structure. ++ */ ++ if (of_have_populated_dt()) ++ return platform_driver_register(&davinci_evm_driver); ++ + if (machine_is_davinci_evm()) { + evm_snd_dev_data = &dm6446_snd_soc_card_evm; + index = 0; +@@ -355,6 +466,11 @@ static int __init evm_init(void) + + static void __exit evm_exit(void) + { ++ if (of_have_populated_dt()) { ++ platform_driver_unregister(&davinci_evm_driver); ++ return; ++ } ++ + platform_device_unregister(evm_snd_device); + } + +-- +1.7.10.4 + |