1 files changed, 144 insertions, 0 deletions

diff --git a/sound/soc/au1x/sample-ac97.c b/sound/soc/au1x/sample-ac97.c
new file mode 100644
index 000000000000..f75ae7f62c3d
--- /dev/null
+++ b/sound/soc/au1x/sample-ac97.c
@@ -0,0 +1,144 @@
+/*
+ * Sample Au12x0/Au1550 PSC AC97 sound machine.
+ *
+ * Copyright (c) 2007-2008 Manuel Lauss <mano@roarinelk.homelinux.net>
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms outlined in the file COPYING at the root of this
+ *  source archive.
+ *
+ * This is a very generic AC97 sound machine driver for boards which
+ * have (AC97) audio at PSC1 (e.g. DB1200 demoboards).
+ */
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/timer.h>
+#include <linux/interrupt.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-au1x00/au1000.h>
+#include <asm/mach-au1x00/au1xxx_psc.h>
+#include <asm/mach-au1x00/au1xxx_dbdma.h>
+
+#include "../codecs/ac97.h"
+#include "psc.h"
+
+static int au1xpsc_sample_ac97_init(struct snd_soc_codec *codec)
+{
+        snd_soc_dapm_sync(codec);
+        return 0;
+}
+
+static struct snd_soc_dai_link au1xpsc_sample_ac97_dai = {
+        .name           = "AC97",
+        .stream_name    = "AC97 HiFi",
+        .cpu_dai        = &au1xpsc_ac97_dai,    /* see psc-ac97.c */
+        .codec_dai      = &ac97_dai,            /* see codecs/ac97.c */
+        .init           = au1xpsc_sample_ac97_init,
+        .ops            = NULL,
+};
+
+static struct snd_soc_machine au1xpsc_sample_ac97_machine = {
+        .name           = "Au1xxx PSC AC97 Audio",
+        .dai_link       = &au1xpsc_sample_ac97_dai,
+        .num_links      = 1,
+};
+
+static struct snd_soc_device au1xpsc_sample_ac97_devdata = {
+        .machine        = &au1xpsc_sample_ac97_machine,
+        .platform       = &au1xpsc_soc_platform, /* see dbdma2.c */
+        .codec_dev      = &soc_codec_dev_ac97,
+};
+
+static struct resource au1xpsc_psc1_res[] = {
+        [0] = {
+                .start  = CPHYSADDR(PSC1_BASE_ADDR),
+                .end    = CPHYSADDR(PSC1_BASE_ADDR) + 0x000fffff,
+                .flags  = IORESOURCE_MEM,
+        },
+        [1] = {
+#ifdef CONFIG_SOC_AU1200
+                .start  = AU1200_PSC1_INT,
+                .end    = AU1200_PSC1_INT,
+#elif defined(CONFIG_SOC_AU1550)
+                .start  = AU1550_PSC1_INT,
+                .end    = AU1550_PSC1_INT,
+#endif
+                .flags  = IORESOURCE_IRQ,
+        },
+        [2] = {
+                .start  = DSCR_CMD0_PSC1_TX,
+                .end    = DSCR_CMD0_PSC1_TX,
+                .flags  = IORESOURCE_DMA,
+        },
+        [3] = {
+                .start  = DSCR_CMD0_PSC1_RX,
+                .end    = DSCR_CMD0_PSC1_RX,
+                .flags  = IORESOURCE_DMA,
+        },
+};
+
+static struct platform_device *au1xpsc_sample_ac97_dev;
+
+static int __init au1xpsc_sample_ac97_load(void)
+{
+        int ret;
+
+#ifdef CONFIG_SOC_AU1200
+        unsigned long io;
+
+        /* modify sys_pinfunc for AC97 on PSC1 */
+        io = au_readl(SYS_PINFUNC);
+        io |= SYS_PINFUNC_P1C;
+        io &= ~(SYS_PINFUNC_P1A | SYS_PINFUNC_P1B);
+        au_writel(io, SYS_PINFUNC);
+        au_sync();
+#endif
+
+        ret = -ENOMEM;
+
+        /* setup PSC clock source for AC97 part: external clock provided
+         * by codec.  The psc-ac97.c driver depends on this setting!
+         */
+        au_writel(PSC_SEL_CLK_SERCLK, PSC1_BASE_ADDR + PSC_SEL_OFFSET);
+        au_sync();
+
+        au1xpsc_sample_ac97_dev = platform_device_alloc("soc-audio", -1);
+        if (!au1xpsc_sample_ac97_dev)
+                goto out;
+
+        au1xpsc_sample_ac97_dev->resource =
+                kmemdup(au1xpsc_psc1_res, sizeof(struct resource) *
+                        ARRAY_SIZE(au1xpsc_psc1_res), GFP_KERNEL);
+        au1xpsc_sample_ac97_dev->num_resources = ARRAY_SIZE(au1xpsc_psc1_res);
+        au1xpsc_sample_ac97_dev->id = 1;
+
+        platform_set_drvdata(au1xpsc_sample_ac97_dev,
+                             &au1xpsc_sample_ac97_devdata);
+        au1xpsc_sample_ac97_devdata.dev = &au1xpsc_sample_ac97_dev->dev;
+        ret = platform_device_add(au1xpsc_sample_ac97_dev);
+
+        if (ret) {
+                platform_device_put(au1xpsc_sample_ac97_dev);
+                au1xpsc_sample_ac97_dev = NULL;
+        }
+
+out:
+        return ret;
+}
+
+static void __exit au1xpsc_sample_ac97_exit(void)
+{
+        platform_device_unregister(au1xpsc_sample_ac97_dev);
+}
+
+module_init(au1xpsc_sample_ac97_load);
+module_exit(au1xpsc_sample_ac97_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("Au1xxx PSC sample AC97 machine");
+MODULE_AUTHOR("Manuel Lauss <mano@roarinelk.homelinux.net>");