ALSA: ASoC Blackfin: add asoc ad73311 driver supporting in Blackfin boards

Signed-off-by: Cliff Cai <cliff.cai@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

3 files changed, 258 insertions, 1 deletions

diff --git a/sound/soc/blackfin/Kconfig b/sound/soc/blackfin/Kconfig
index f98331d099e7..dc006206f622 100644
--- a/sound/soc/blackfin/Kconfig
+++ b/sound/soc/blackfin/Kconfig
@@ -17,6 +17,22 @@ config SND_BF5XX_SOC_SSM2602
         help
           Say Y if you want to add support for SoC audio on BF527-EZKIT.
 
+config SND_BF5XX_SOC_AD73311
+        tristate "SoC AD73311 Audio support for Blackfin"
+        depends on SND_BF5XX_I2S
+        select SND_BF5XX_SOC_I2S
+        select SND_SOC_AD73311
+        help
+          Say Y if you want to add support for AD73311 codec on Blackfin.
+
+config SND_BFIN_AD73311_SE
+        int "PF pin for AD73311L Chip Select"
+        depends on SND_BF5XX_SOC_AD73311
+        default 4
+        help
+          Enter the GPIO used to control AD73311's SE pin. Acceptable
+          values are 0 to 7
+
 config SND_BF5XX_AC97
         tristate "SoC AC97 Audio for the ADI BF5xx chip"
         depends on BLACKFIN && SND_SOC
diff --git a/sound/soc/blackfin/Makefile b/sound/soc/blackfin/Makefile
index 9ea8bd9e0ba3..97bb37a6359c 100644
--- a/sound/soc/blackfin/Makefile
+++ b/sound/soc/blackfin/Makefile
@@ -14,7 +14,8 @@ obj-$(CONFIG_SND_BF5XX_SOC_I2S) += snd-soc-bf5xx-i2s.o
 # Blackfin Machine Support
 snd-ad1980-objs := bf5xx-ad1980.o
 snd-ssm2602-objs := bf5xx-ssm2602.o
-
+snd-ad73311-objs := bf5xx-ad73311.o
 
 obj-$(CONFIG_SND_BF5XX_SOC_AD1980) += snd-ad1980.o
 obj-$(CONFIG_SND_BF5XX_SOC_SSM2602) += snd-ssm2602.o
+obj-$(CONFIG_SND_BF5XX_SOC_AD73311) += snd-ad73311.o
diff --git a/sound/soc/blackfin/bf5xx-ad73311.c b/sound/soc/blackfin/bf5xx-ad73311.c
new file mode 100644
index 000000000000..622c9b909532
--- /dev/null
+++ b/sound/soc/blackfin/bf5xx-ad73311.c
@@ -0,0 +1,240 @@
+/*
+ * File:         sound/soc/blackfin/bf5xx-ad73311.c
+ * Author:       Cliff Cai <Cliff.Cai@analog.com>
+ *
+ * Created:      Thur Sep 25 2008
+ * Description:  Board driver for ad73311 sound chip
+ *
+ * Modified:
+ *               Copyright 2008 Analog Devices Inc.
+ *
+ * Bugs:         Enter bugs at http://blackfin.uclinux.org/
+ *
+ * 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; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/device.h>
+#include <linux/delay.h>
+#include <linux/gpio.h>
+
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/soc.h>
+#include <sound/soc-dapm.h>
+#include <sound/pcm_params.h>
+
+#include <asm/blackfin.h>
+#include <asm/cacheflush.h>
+#include <asm/irq.h>
+#include <asm/dma.h>
+#include <asm/portmux.h>
+
+#include "../codecs/ad73311.h"
+#include "bf5xx-sport.h"
+#include "bf5xx-i2s-pcm.h"
+#include "bf5xx-i2s.h"
+
+#if CONFIG_SND_BF5XX_SPORT_NUM == 0
+#define bfin_write_SPORT_TCR1   bfin_write_SPORT0_TCR1
+#define bfin_read_SPORT_TCR1    bfin_read_SPORT0_TCR1
+#define bfin_write_SPORT_TCR2   bfin_write_SPORT0_TCR2
+#define bfin_write_SPORT_TX16   bfin_write_SPORT0_TX16
+#define bfin_read_SPORT_STAT    bfin_read_SPORT0_STAT
+#else
+#define bfin_write_SPORT_TCR1   bfin_write_SPORT1_TCR1
+#define bfin_read_SPORT_TCR1    bfin_read_SPORT1_TCR1
+#define bfin_write_SPORT_TCR2   bfin_write_SPORT1_TCR2
+#define bfin_write_SPORT_TX16   bfin_write_SPORT1_TX16
+#define bfin_read_SPORT_STAT    bfin_read_SPORT1_STAT
+#endif
+
+#define GPIO_SE CONFIG_SND_BFIN_AD73311_SE
+
+static struct snd_soc_machine bf5xx_ad73311;
+
+static int snd_ad73311_startup(void)
+{
+        pr_debug("%s enter\n", __func__);
+
+        /* Pull up SE pin on AD73311L */
+        gpio_set_value(GPIO_SE, 1);
+        return 0;
+}
+
+static int snd_ad73311_configure(void)
+{
+        unsigned short ctrl_regs[6];
+        unsigned short status = 0;
+        int count = 0;
+
+        /* DMCLK = MCLK = 16.384 MHz
+         * SCLK = DMCLK/8 = 2.048 MHz
+         * Sample Rate = DMCLK/2048  = 8 KHz
+         */
+        ctrl_regs[0] = AD_CONTROL | AD_WRITE | CTRL_REG_B | REGB_MCDIV(0) | \
+                        REGB_SCDIV(0) | REGB_DIRATE(0);
+        ctrl_regs[1] = AD_CONTROL | AD_WRITE | CTRL_REG_C | REGC_PUDEV | \
+                        REGC_PUADC | REGC_PUDAC | REGC_PUREF | REGC_REFUSE ;
+        ctrl_regs[2] = AD_CONTROL | AD_WRITE | CTRL_REG_D | REGD_OGS(2) | \
+                        REGD_IGS(2);
+        ctrl_regs[3] = AD_CONTROL | AD_WRITE | CTRL_REG_E | REGE_DA(0x1f);
+        ctrl_regs[4] = AD_CONTROL | AD_WRITE | CTRL_REG_F | REGF_SEEN ;
+        ctrl_regs[5] = AD_CONTROL | AD_WRITE | CTRL_REG_A | REGA_MODE_DATA;
+
+        local_irq_disable();
+        snd_ad73311_startup();
+        udelay(1);
+
+        bfin_write_SPORT_TCR1(TFSR);
+        bfin_write_SPORT_TCR2(0xF);
+        SSYNC();
+
+        /* SPORT Tx Register is a 8 x 16 FIFO, all the data can be put to
+         * FIFO before enable SPORT to transfer the data
+         */
+        for (count = 0; count < 6; count++)
+                bfin_write_SPORT_TX16(ctrl_regs[count]);
+        SSYNC();
+        bfin_write_SPORT_TCR1(bfin_read_SPORT_TCR1() | TSPEN);
+        SSYNC();
+
+        /* When TUVF is set, the data is already send out */
+        while (!(status & TUVF) && count++ < 10000) {
+                udelay(1);
+                status = bfin_read_SPORT_STAT();
+                SSYNC();
+        }
+        bfin_write_SPORT_TCR1(bfin_read_SPORT_TCR1() & ~TSPEN);
+        SSYNC();
+        local_irq_enable();
+
+        if (count == 10000) {
+                printk(KERN_ERR "ad73311: failed to configure codec\n");
+                return -1;
+        }
+        return 0;
+}
+
+static int bf5xx_probe(struct platform_device *pdev)
+{
+        int err;
+        if (gpio_request(GPIO_SE, "AD73311_SE")) {
+                printk(KERN_ERR "%s: Failed ro request GPIO_%d\n", __func__, GPIO_SE);
+                return -EBUSY;
+        }
+
+        gpio_direction_output(GPIO_SE, 0);
+
+        err = snd_ad73311_configure();
+        if (err < 0)
+                return -EFAULT;
+
+        return 0;
+}
+
+static int bf5xx_ad73311_startup(struct snd_pcm_substream *substream)
+{
+        struct snd_soc_pcm_runtime *rtd = substream->private_data;
+        struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
+
+        pr_debug("%s enter\n", __func__);
+        cpu_dai->private_data = sport_handle;
+        return 0;
+}
+
+static int bf5xx_ad73311_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 *cpu_dai = rtd->dai->cpu_dai;
+        int ret = 0;
+
+        pr_debug("%s rate %d format %x\n", __func__, params_rate(params),
+                params_format(params));
+
+        /* set cpu DAI configuration */
+        ret = cpu_dai->dai_ops.set_fmt(cpu_dai, SND_SOC_DAIFMT_DSP_A |
+                SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM);
+        if (ret < 0)
+                return ret;
+
+        return 0;
+}
+
+
+static struct snd_soc_ops bf5xx_ad73311_ops = {
+        .startup = bf5xx_ad73311_startup,
+        .hw_params = bf5xx_ad73311_hw_params,
+};
+
+static struct snd_soc_dai_link bf5xx_ad73311_dai = {
+        .name = "ad73311",
+        .stream_name = "AD73311",
+        .cpu_dai = &bf5xx_i2s_dai,
+        .codec_dai = &ad73311_dai,
+        .ops = &bf5xx_ad73311_ops,
+};
+
+static struct snd_soc_machine bf5xx_ad73311 = {
+        .name = "bf5xx_ad73311",
+        .probe = bf5xx_probe,
+        .dai_link = &bf5xx_ad73311_dai,
+        .num_links = 1,
+};
+
+static struct snd_soc_device bf5xx_ad73311_snd_devdata = {
+        .machine = &bf5xx_ad73311,
+        .platform = &bf5xx_i2s_soc_platform,
+        .codec_dev = &soc_codec_dev_ad73311,
+};
+
+static struct platform_device *bf52x_ad73311_snd_device;
+
+static int __init bf5xx_ad73311_init(void)
+{
+        int ret;
+
+        pr_debug("%s enter\n", __func__);
+        bf52x_ad73311_snd_device = platform_device_alloc("soc-audio", -1);
+        if (!bf52x_ad73311_snd_device)
+                return -ENOMEM;
+
+        platform_set_drvdata(bf52x_ad73311_snd_device, &bf5xx_ad73311_snd_devdata);
+        bf5xx_ad73311_snd_devdata.dev = &bf52x_ad73311_snd_device->dev;
+        ret = platform_device_add(bf52x_ad73311_snd_device);
+
+        if (ret)
+                platform_device_put(bf52x_ad73311_snd_device);
+
+        return ret;
+}
+
+static void __exit bf5xx_ad73311_exit(void)
+{
+        pr_debug("%s enter\n", __func__);
+        platform_device_unregister(bf52x_ad73311_snd_device);
+}
+
+module_init(bf5xx_ad73311_init);
+module_exit(bf5xx_ad73311_exit);
+
+/* Module information */
+MODULE_AUTHOR("Cliff Cai");
+MODULE_DESCRIPTION("ALSA SoC AD73311 Blackfin");
+MODULE_LICENSE("GPL");
+