ALSA: ASoC: Add support for osk5912

Adding ASoC machine driver for osk5912

Signed-off-by: Arun KS <arunks@mistralsolutions.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

3 files changed, 242 insertions, 0 deletions

diff --git a/sound/soc/omap/Kconfig b/sound/soc/omap/Kconfig
index aea27e70043c..8b7766b998d7 100644
--- a/sound/soc/omap/Kconfig
+++ b/sound/soc/omap/Kconfig
@@ -13,3 +13,11 @@ config SND_OMAP_SOC_N810
         select SND_SOC_TLV320AIC3X
         help
           Say Y if you want to add support for SoC audio on Nokia N810.
+
+config SND_OMAP_SOC_OSK5912
+        tristate "SoC Audio support for omap osk5912"
+        depends on SND_OMAP_SOC && MACH_OMAP_OSK
+        select SND_OMAP_SOC_MCBSP
+        select SND_SOC_TLV320AIC23
+        help
+          Say Y if you want to add support for SoC audio on osk5912.
diff --git a/sound/soc/omap/Makefile b/sound/soc/omap/Makefile
index d8d8d58075e3..e09d1f297f64 100644
--- a/sound/soc/omap/Makefile
+++ b/sound/soc/omap/Makefile
@@ -7,5 +7,7 @@ obj-$(CONFIG_SND_OMAP_SOC_MCBSP) += snd-soc-omap-mcbsp.o
 
 # OMAP Machine Support
 snd-soc-n810-objs := n810.o
+snd-soc-osk5912-objs := osk5912.o
 
 obj-$(CONFIG_SND_OMAP_SOC_N810) += snd-soc-n810.o
+obj-$(CONFIG_SND_OMAP_SOC_OSK5912) += snd-soc-osk5912.o
diff --git a/sound/soc/omap/osk5912.c b/sound/soc/omap/osk5912.c
new file mode 100644
index 000000000000..0fe733796898
--- /dev/null
+++ b/sound/soc/omap/osk5912.c
@@ -0,0 +1,232 @@
+/*
+ * osk5912.c  --  SoC audio for OSK 5912
+ *
+ * Copyright (C) 2008 Mistral Solutions
+ *
+ * Contact: Arun KS  <arunks@mistralsolutions.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ *
+ */
+
+#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 <linux/gpio.h>
+#include <mach/mcbsp.h>
+
+#include "omap-mcbsp.h"
+#include "omap-pcm.h"
+#include "../codecs/tlv320aic23.h"
+
+#define CODEC_CLOCK     12000000
+
+static struct clk *tlv320aic23_mclk;
+
+static int osk_startup(struct snd_pcm_substream *substream)
+{
+        return clk_enable(tlv320aic23_mclk);
+}
+
+static void osk_shutdown(struct snd_pcm_substream *substream)
+{
+        clk_disable(tlv320aic23_mclk);
+}
+
+static int osk_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 err;
+
+        /* Set codec DAI configuration */
+        err = snd_soc_dai_set_fmt(codec_dai,
+                                  SND_SOC_DAIFMT_DSP_A |
+                                  SND_SOC_DAIFMT_NB_IF |
+                                  SND_SOC_DAIFMT_CBM_CFM);
+        if (err < 0) {
+                printk(KERN_ERR "can't set codec DAI configuration\n");
+                return err;
+        }
+
+        /* Set cpu DAI configuration */
+        err = snd_soc_dai_set_fmt(cpu_dai,
+                                  SND_SOC_DAIFMT_DSP_A |
+                                  SND_SOC_DAIFMT_NB_IF |
+                                  SND_SOC_DAIFMT_CBM_CFM);
+        if (err < 0) {
+                printk(KERN_ERR "can't set cpu DAI configuration\n");
+                return err;
+        }
+
+        /* Set the codec system clock for DAC and ADC */
+        err =
+            snd_soc_dai_set_sysclk(codec_dai, 0, CODEC_CLOCK, SND_SOC_CLOCK_IN);
+
+        if (err < 0) {
+                printk(KERN_ERR "can't set codec system clock\n");
+                return err;
+        }
+
+        return err;
+}
+
+static struct snd_soc_ops osk_ops = {
+        .startup = osk_startup,
+        .hw_params = osk_hw_params,
+        .shutdown = osk_shutdown,
+};
+
+static const struct snd_soc_dapm_widget tlv320aic23_dapm_widgets[] = {
+        SND_SOC_DAPM_HP("Headphone Jack", NULL),
+        SND_SOC_DAPM_LINE("Line In", NULL),
+        SND_SOC_DAPM_MIC("Mic Jack", NULL),
+};
+
+static const struct snd_soc_dapm_route audio_map[] = {
+        {"Headphone Jack", NULL, "LHPOUT"},
+        {"Headphone Jack", NULL, "RHPOUT"},
+
+        {"LLINEIN", NULL, "Line In"},
+        {"RLINEIN", NULL, "Line In"},
+
+        {"MICIN", NULL, "Mic Jack"},
+};
+
+static int osk_tlv320aic23_init(struct snd_soc_codec *codec)
+{
+
+        /* Add osk5912 specific widgets */
+        snd_soc_dapm_new_controls(codec, tlv320aic23_dapm_widgets,
+                                  ARRAY_SIZE(tlv320aic23_dapm_widgets));
+
+        /* Set up osk5912 specific audio path audio_map */
+        snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
+
+        snd_soc_dapm_enable_pin(codec, "Headphone Jack");
+        snd_soc_dapm_enable_pin(codec, "Line In");
+        snd_soc_dapm_enable_pin(codec, "Mic Jack");
+
+        snd_soc_dapm_sync(codec);
+
+        return 0;
+}
+
+/* Digital audio interface glue - connects codec <--> CPU */
+static struct snd_soc_dai_link osk_dai = {
+        .name = "TLV320AIC23",
+        .stream_name = "AIC23",
+        .cpu_dai = &omap_mcbsp_dai[0],
+        .codec_dai = &tlv320aic23_dai,
+        .init = osk_tlv320aic23_init,
+        .ops = &osk_ops,
+};
+
+/* Audio machine driver */
+static struct snd_soc_machine snd_soc_machine_osk = {
+        .name = "OSK5912",
+        .dai_link = &osk_dai,
+        .num_links = 1,
+};
+
+/* Audio subsystem */
+static struct snd_soc_device osk_snd_devdata = {
+        .machine = &snd_soc_machine_osk,
+        .platform = &omap_soc_platform,
+        .codec_dev = &soc_codec_dev_tlv320aic23,
+};
+
+static struct platform_device *osk_snd_device;
+
+static int __init osk_soc_init(void)
+{
+        int err;
+        u32 curRate;
+        struct device *dev;
+
+        if (!(machine_is_omap_osk()))
+                return -ENODEV;
+
+        osk_snd_device = platform_device_alloc("soc-audio", -1);
+        if (!osk_snd_device)
+                return -ENOMEM;
+
+        platform_set_drvdata(osk_snd_device, &osk_snd_devdata);
+        osk_snd_devdata.dev = &osk_snd_device->dev;
+        *(unsigned int *)osk_dai.cpu_dai->private_data = 0;     /* McBSP1 */
+        err = platform_device_add(osk_snd_device);
+        if (err)
+                goto err1;
+
+        dev = &osk_snd_device->dev;
+
+        tlv320aic23_mclk = clk_get(dev, "mclk");
+        if (IS_ERR(tlv320aic23_mclk)) {
+                printk(KERN_ERR "Could not get mclk clock\n");
+                return -ENODEV;
+        }
+
+        if (clk_get_usecount(tlv320aic23_mclk) > 0) {
+                /* MCLK is already in use */
+                printk(KERN_WARNING
+                       "MCLK in use at %d Hz. We change it to %d Hz\n",
+                       (uint) clk_get_rate(tlv320aic23_mclk), CODEC_CLOCK);
+        }
+
+        /*
+         * Configure 12 MHz output on MCLK.
+         */
+        curRate = (uint) clk_get_rate(tlv320aic23_mclk);
+        if (curRate != CODEC_CLOCK) {
+                if (clk_set_rate(tlv320aic23_mclk, CODEC_CLOCK)) {
+                        printk(KERN_ERR "Cannot set MCLK for AIC23 CODEC\n");
+                        err = -ECANCELED;
+                        goto err1;
+                }
+        }
+
+        printk(KERN_INFO "MCLK = %d [%d], usecount = %d\n",
+               (uint) clk_get_rate(tlv320aic23_mclk), CODEC_CLOCK,
+               clk_get_usecount(tlv320aic23_mclk));
+
+        return 0;
+err1:
+        clk_put(tlv320aic23_mclk);
+        platform_device_del(osk_snd_device);
+        platform_device_put(osk_snd_device);
+
+        return err;
+
+}
+
+static void __exit osk_soc_exit(void)
+{
+        platform_device_unregister(osk_snd_device);
+}
+
+module_init(osk_soc_init);
+module_exit(osk_soc_exit);
+
+MODULE_AUTHOR("Arun KS <arunks@mistralsolutions.com>");
+MODULE_DESCRIPTION("ALSA SoC OSK 5912");
+MODULE_LICENSE("GPL");