zte's code,first commit
Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
diff --git a/ap/os/linux/linux-3.4.x/sound/isa/cs423x/cs4231.c b/ap/os/linux/linux-3.4.x/sound/isa/cs423x/cs4231.c
new file mode 100644
index 0000000..99dda45
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/sound/isa/cs423x/cs4231.c
@@ -0,0 +1,204 @@
+/*
+ * Generic driver for CS4231 chips
+ * Copyright (c) by Jaroslav Kysela <perex@perex.cz>
+ * Originally the CS4232/CS4232A driver, modified for use on CS4231 by
+ * Tugrul Galatali <galatalt@stuy.edu>
+ *
+ * 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, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#include <linux/init.h>
+#include <linux/err.h>
+#include <linux/isa.h>
+#include <linux/time.h>
+#include <linux/wait.h>
+#include <linux/module.h>
+#include <sound/core.h>
+#include <sound/wss.h>
+#include <sound/mpu401.h>
+#include <sound/initval.h>
+
+#define CRD_NAME "Generic CS4231"
+#define DEV_NAME "cs4231"
+
+MODULE_DESCRIPTION(CRD_NAME);
+MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
+MODULE_LICENSE("GPL");
+MODULE_SUPPORTED_DEVICE("{{Crystal Semiconductors,CS4231}}");
+
+static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */
+static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */
+static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE; /* Enable this card */
+static long port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT; /* PnP setup */
+static long mpu_port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT; /* PnP setup */
+static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ; /* 5,7,9,11,12,15 */
+static int mpu_irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ; /* 9,11,12,15 */
+static int dma1[SNDRV_CARDS] = SNDRV_DEFAULT_DMA; /* 0,1,3,5,6,7 */
+static int dma2[SNDRV_CARDS] = SNDRV_DEFAULT_DMA; /* 0,1,3,5,6,7 */
+
+module_param_array(index, int, NULL, 0444);
+MODULE_PARM_DESC(index, "Index value for " CRD_NAME " soundcard.");
+module_param_array(id, charp, NULL, 0444);
+MODULE_PARM_DESC(id, "ID string for " CRD_NAME " soundcard.");
+module_param_array(enable, bool, NULL, 0444);
+MODULE_PARM_DESC(enable, "Enable " CRD_NAME " soundcard.");
+module_param_array(port, long, NULL, 0444);
+MODULE_PARM_DESC(port, "Port # for " CRD_NAME " driver.");
+module_param_array(mpu_port, long, NULL, 0444);
+MODULE_PARM_DESC(mpu_port, "MPU-401 port # for " CRD_NAME " driver.");
+module_param_array(irq, int, NULL, 0444);
+MODULE_PARM_DESC(irq, "IRQ # for " CRD_NAME " driver.");
+module_param_array(mpu_irq, int, NULL, 0444);
+MODULE_PARM_DESC(mpu_irq, "MPU-401 IRQ # for " CRD_NAME " driver.");
+module_param_array(dma1, int, NULL, 0444);
+MODULE_PARM_DESC(dma1, "DMA1 # for " CRD_NAME " driver.");
+module_param_array(dma2, int, NULL, 0444);
+MODULE_PARM_DESC(dma2, "DMA2 # for " CRD_NAME " driver.");
+
+static int __devinit snd_cs4231_match(struct device *dev, unsigned int n)
+{
+ if (!enable[n])
+ return 0;
+
+ if (port[n] == SNDRV_AUTO_PORT) {
+ dev_err(dev, "please specify port\n");
+ return 0;
+ }
+ if (irq[n] == SNDRV_AUTO_IRQ) {
+ dev_err(dev, "please specify irq\n");
+ return 0;
+ }
+ if (dma1[n] == SNDRV_AUTO_DMA) {
+ dev_err(dev, "please specify dma1\n");
+ return 0;
+ }
+ return 1;
+}
+
+static int __devinit snd_cs4231_probe(struct device *dev, unsigned int n)
+{
+ struct snd_card *card;
+ struct snd_wss *chip;
+ struct snd_pcm *pcm;
+ int error;
+
+ error = snd_card_create(index[n], id[n], THIS_MODULE, 0, &card);
+ if (error < 0)
+ return error;
+
+ error = snd_wss_create(card, port[n], -1, irq[n], dma1[n], dma2[n],
+ WSS_HW_DETECT, 0, &chip);
+ if (error < 0)
+ goto out;
+
+ card->private_data = chip;
+
+ error = snd_wss_pcm(chip, 0, &pcm);
+ if (error < 0)
+ goto out;
+
+ strcpy(card->driver, "CS4231");
+ strcpy(card->shortname, pcm->name);
+
+ sprintf(card->longname, "%s at 0x%lx, irq %d, dma %d",
+ pcm->name, chip->port, irq[n], dma1[n]);
+ if (dma2[n] >= 0)
+ sprintf(card->longname + strlen(card->longname), "&%d", dma2[n]);
+
+ error = snd_wss_mixer(chip);
+ if (error < 0)
+ goto out;
+
+ error = snd_wss_timer(chip, 0, NULL);
+ if (error < 0)
+ goto out;
+
+ if (mpu_port[n] > 0 && mpu_port[n] != SNDRV_AUTO_PORT) {
+ if (mpu_irq[n] == SNDRV_AUTO_IRQ)
+ mpu_irq[n] = -1;
+ if (snd_mpu401_uart_new(card, 0, MPU401_HW_CS4232,
+ mpu_port[n], 0, mpu_irq[n],
+ NULL) < 0)
+ dev_warn(dev, "MPU401 not detected\n");
+ }
+
+ snd_card_set_dev(card, dev);
+
+ error = snd_card_register(card);
+ if (error < 0)
+ goto out;
+
+ dev_set_drvdata(dev, card);
+ return 0;
+
+out: snd_card_free(card);
+ return error;
+}
+
+static int __devexit snd_cs4231_remove(struct device *dev, unsigned int n)
+{
+ snd_card_free(dev_get_drvdata(dev));
+ dev_set_drvdata(dev, NULL);
+ return 0;
+}
+
+#ifdef CONFIG_PM
+static int snd_cs4231_suspend(struct device *dev, unsigned int n, pm_message_t state)
+{
+ struct snd_card *card = dev_get_drvdata(dev);
+ struct snd_wss *chip = card->private_data;
+
+ snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
+ chip->suspend(chip);
+ return 0;
+}
+
+static int snd_cs4231_resume(struct device *dev, unsigned int n)
+{
+ struct snd_card *card = dev_get_drvdata(dev);
+ struct snd_wss *chip = card->private_data;
+
+ chip->resume(chip);
+ snd_power_change_state(card, SNDRV_CTL_POWER_D0);
+ return 0;
+}
+#endif
+
+static struct isa_driver snd_cs4231_driver = {
+ .match = snd_cs4231_match,
+ .probe = snd_cs4231_probe,
+ .remove = __devexit_p(snd_cs4231_remove),
+#ifdef CONFIG_PM
+ .suspend = snd_cs4231_suspend,
+ .resume = snd_cs4231_resume,
+#endif
+ .driver = {
+ .name = DEV_NAME
+ }
+};
+
+static int __init alsa_card_cs4231_init(void)
+{
+ return isa_register_driver(&snd_cs4231_driver, SNDRV_CARDS);
+}
+
+static void __exit alsa_card_cs4231_exit(void)
+{
+ isa_unregister_driver(&snd_cs4231_driver);
+}
+
+module_init(alsa_card_cs4231_init);
+module_exit(alsa_card_cs4231_exit);