ASoC: Adding OMAP3517 / AM3517 EVM support in ASOC
Anuj Aggarwal [Thu, 29 Oct 2009 18:52:30 +0000 (23:52 +0530)]
Adding support for OMAP3517 / AM3517 EVM in Alsa SoC.

Signed-off-by: Anuj Aggarwal <anuj.aggarwal@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

sound/soc/omap/am3517evm.c [new file with mode: 0644]

diff --git a/sound/soc/omap/am3517evm.c b/sound/soc/omap/am3517evm.c
new file mode 100644 (file)
index 0000000..135901b
--- /dev/null
@@ -0,0 +1,202 @@
+/*
+ * am3517evm.c  -- ALSA SoC support for OMAP3517 / AM3517 EVM
+ *
+ * Author: Anuj Aggarwal <anuj.aggarwal@ti.com>
+ *
+ * Based on sound/soc/omap/beagle.c by Steve Sakoman
+ *
+ * Copyright (C) 2009 Texas Instruments Incorporated
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation version 2.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any kind,
+ * whether express or implied; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ */
+
+#include <linux/clk.h>
+#include <linux/platform_device.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/soc.h>
+#include <sound/soc-dapm.h>
+
+#include <asm/mach-types.h>
+#include <mach/hardware.h>
+#include <mach/gpio.h>
+#include <plat/mcbsp.h>
+
+#include "omap-mcbsp.h"
+#include "omap-pcm.h"
+
+#include "../codecs/tlv320aic23.h"
+
+#define CODEC_CLOCK    12000000
+
+static int am3517evm_hw_params(struct snd_pcm_substream *substream,
+       struct snd_pcm_hw_params *params)
+{
+       struct snd_soc_pcm_runtime *rtd = substream->private_data;
+       struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
+       struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
+       int ret;
+
+       /* Set codec DAI configuration */
+       ret = snd_soc_dai_set_fmt(codec_dai,
+                                 SND_SOC_DAIFMT_DSP_B |
+                                 SND_SOC_DAIFMT_NB_NF |
+                                 SND_SOC_DAIFMT_CBM_CFM);
+       if (ret < 0) {
+               printk(KERN_ERR "can't set codec DAI configuration\n");
+               return ret;
+       }
+
+       /* Set cpu DAI configuration */
+       ret = snd_soc_dai_set_fmt(cpu_dai,
+                                 SND_SOC_DAIFMT_DSP_B |
+                                 SND_SOC_DAIFMT_NB_NF |
+                                 SND_SOC_DAIFMT_CBM_CFM);
+       if (ret < 0) {
+               printk(KERN_ERR "can't set cpu DAI configuration\n");
+               return ret;
+       }
+
+       /* Set the codec system clock for DAC and ADC */
+       ret = snd_soc_dai_set_sysclk(codec_dai, 0,
+                       CODEC_CLOCK, SND_SOC_CLOCK_IN);
+       if (ret < 0) {
+               printk(KERN_ERR "can't set codec system clock\n");
+               return ret;
+       }
+
+       ret = snd_soc_dai_set_sysclk(cpu_dai, OMAP_MCBSP_CLKR_SRC_CLKX, 0,
+                               SND_SOC_CLOCK_IN);
+       if (ret < 0) {
+               printk(KERN_ERR "can't set CPU system clock OMAP_MCBSP_CLKR_SRC_CLKX\n");
+               return ret;
+       }
+
+       snd_soc_dai_set_sysclk(cpu_dai, OMAP_MCBSP_FSR_SRC_FSX, 0,
+                               SND_SOC_CLOCK_IN);
+       if (ret < 0) {
+               printk(KERN_ERR "can't set CPU system clock OMAP_MCBSP_FSR_SRC_FSX\n");
+               return ret;
+       }
+
+       return 0;
+}
+
+static struct snd_soc_ops am3517evm_ops = {
+       .hw_params = am3517evm_hw_params,
+};
+
+/* am3517evm machine dapm widgets */
+static const struct snd_soc_dapm_widget tlv320aic23_dapm_widgets[] = {
+       SND_SOC_DAPM_HP("Line Out", NULL),
+       SND_SOC_DAPM_LINE("Line In", NULL),
+       SND_SOC_DAPM_MIC("Mic In", NULL),
+};
+
+static const struct snd_soc_dapm_route audio_map[] = {
+       /* Line Out connected to LLOUT, RLOUT */
+       {"Line Out", NULL, "LOUT"},
+       {"Line Out", NULL, "ROUT"},
+
+       {"LLINEIN", NULL, "Line In"},
+       {"RLINEIN", NULL, "Line In"},
+
+       {"MICIN", NULL, "Mic In"},
+};
+
+static int am3517evm_aic23_init(struct snd_soc_codec *codec)
+{
+       /* Add am3517-evm specific widgets */
+       snd_soc_dapm_new_controls(codec, tlv320aic23_dapm_widgets,
+                                 ARRAY_SIZE(tlv320aic23_dapm_widgets));
+
+       /* Set up davinci-evm specific audio path audio_map */
+       snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
+
+       /* always connected */
+       snd_soc_dapm_enable_pin(codec, "Line Out");
+       snd_soc_dapm_enable_pin(codec, "Line In");
+       snd_soc_dapm_enable_pin(codec, "Mic In");
+
+       snd_soc_dapm_sync(codec);
+
+       return 0;
+}
+
+/* Digital audio interface glue - connects codec <--> CPU */
+static struct snd_soc_dai_link am3517evm_dai = {
+       .name = "TLV320AIC23",
+       .stream_name = "AIC23",
+       .cpu_dai = &omap_mcbsp_dai[0],
+       .codec_dai = &tlv320aic23_dai,
+       .init = am3517evm_aic23_init,
+       .ops = &am3517evm_ops,
+};
+
+/* Audio machine driver */
+static struct snd_soc_card snd_soc_am3517evm = {
+       .name = "am3517evm",
+       .platform = &omap_soc_platform,
+       .dai_link = &am3517evm_dai,
+       .num_links = 1,
+};
+
+/* Audio subsystem */
+static struct snd_soc_device am3517evm_snd_devdata = {
+       .card = &snd_soc_am3517evm,
+       .codec_dev = &soc_codec_dev_tlv320aic23,
+};
+
+static struct platform_device *am3517evm_snd_device;
+
+static int __init am3517evm_soc_init(void)
+{
+       int ret;
+
+       if (!machine_is_omap3517evm()) {
+               pr_err("Not OMAP3517 / AM3517 EVM!\n");
+               return -ENODEV;
+       }
+       pr_info("OMAP3517 / AM3517 EVM SoC init\n");
+
+       am3517evm_snd_device = platform_device_alloc("soc-audio", -1);
+       if (!am3517evm_snd_device) {
+               printk(KERN_ERR "Platform device allocation failed\n");
+               return -ENOMEM;
+       }
+
+       platform_set_drvdata(am3517evm_snd_device, &am3517evm_snd_devdata);
+       am3517evm_snd_devdata.dev = &am3517evm_snd_device->dev;
+       *(unsigned int *)am3517evm_dai.cpu_dai->private_data = 0; /* McBSP1 */
+
+       ret = platform_device_add(am3517evm_snd_device);
+       if (ret)
+               goto err1;
+
+       return 0;
+
+err1:
+       printk(KERN_ERR "Unable to add platform device\n");
+       platform_device_put(am3517evm_snd_device);
+
+       return ret;
+}
+
+static void __exit am3517evm_soc_exit(void)
+{
+       platform_device_unregister(am3517evm_snd_device);
+}
+
+module_init(am3517evm_soc_init);
+module_exit(am3517evm_soc_exit);
+
+MODULE_AUTHOR("Anuj Aggarwal <anuj.aggarwal@ti.com>");
+MODULE_DESCRIPTION("ALSA SoC OMAP3517 / AM3517 EVM");
+MODULE_LICENSE("GPL v2");