Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/include/sound/i2c.h b/include/sound/i2c.h
new file mode 100644
index 0000000..a665ddf
--- /dev/null
+++ b/include/sound/i2c.h
@@ -0,0 +1,102 @@
+#ifndef __SOUND_I2C_H
+#define __SOUND_I2C_H
+
+/*
+ *
+ *
+ * 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
+ *
+ *
+ */
+
+typedef struct _snd_i2c_device snd_i2c_device_t;
+typedef struct _snd_i2c_bus snd_i2c_bus_t;
+
+#define SND_I2C_DEVICE_ADDRTEN (1<<0) /* 10-bit I2C address */
+
+struct _snd_i2c_device {
+ struct list_head list;
+ snd_i2c_bus_t *bus; /* I2C bus */
+ char name[32]; /* some useful device name */
+ unsigned short flags; /* device flags */
+ unsigned short addr; /* device address (might be 10-bit) */
+ unsigned long private_value;
+ void *private_data;
+ void (*private_free)(snd_i2c_device_t *device);
+};
+
+#define snd_i2c_device(n) list_entry(n, snd_i2c_device_t, list)
+
+typedef struct _snd_i2c_bit_ops {
+ void (*start)(snd_i2c_bus_t *bus); /* transfer start */
+ void (*stop)(snd_i2c_bus_t *bus); /* transfer stop */
+ void (*direction)(snd_i2c_bus_t *bus, int clock, int data); /* set line direction (0 = write, 1 = read) */
+ void (*setlines)(snd_i2c_bus_t *bus, int clock, int data);
+ int (*getclock)(snd_i2c_bus_t *bus);
+ int (*getdata)(snd_i2c_bus_t *bus, int ack);
+} snd_i2c_bit_ops_t;
+
+typedef struct _snd_i2c_ops {
+ int (*sendbytes)(snd_i2c_device_t *device, unsigned char *bytes, int count);
+ int (*readbytes)(snd_i2c_device_t *device, unsigned char *bytes, int count);
+ int (*probeaddr)(snd_i2c_bus_t *bus, unsigned short addr);
+} snd_i2c_ops_t;
+
+struct _snd_i2c_bus {
+ snd_card_t *card; /* card which I2C belongs to */
+ char name[32]; /* some useful label */
+
+ struct semaphore lock_mutex;
+
+ snd_i2c_bus_t *master; /* master bus when SCK/SCL is shared */
+ struct list_head buses; /* master: slave buses sharing SCK/SCL, slave: link list */
+
+ struct list_head devices; /* attached devices to this bus */
+
+ union {
+ snd_i2c_bit_ops_t *bit;
+ void *ops;
+ } hw_ops; /* lowlevel operations */
+ snd_i2c_ops_t *ops; /* midlevel operations */
+
+ unsigned long private_value;
+ void *private_data;
+ void (*private_free)(snd_i2c_bus_t *bus);
+};
+
+#define snd_i2c_slave_bus(n) list_entry(n, snd_i2c_bus_t, buses)
+
+int snd_i2c_bus_create(snd_card_t *card, const char *name, snd_i2c_bus_t *master, snd_i2c_bus_t **ri2c);
+int snd_i2c_device_create(snd_i2c_bus_t *bus, const char *name, unsigned char addr, snd_i2c_device_t **rdevice);
+int snd_i2c_device_free(snd_i2c_device_t *device);
+
+static inline void snd_i2c_lock(snd_i2c_bus_t *bus) {
+ if (bus->master)
+ down(&bus->master->lock_mutex);
+ else
+ down(&bus->lock_mutex);
+}
+static inline void snd_i2c_unlock(snd_i2c_bus_t *bus) {
+ if (bus->master)
+ up(&bus->master->lock_mutex);
+ else
+ up(&bus->lock_mutex);
+}
+
+int snd_i2c_sendbytes(snd_i2c_device_t *device, unsigned char *bytes, int count);
+int snd_i2c_readbytes(snd_i2c_device_t *device, unsigned char *bytes, int count);
+int snd_i2c_probeaddr(snd_i2c_bus_t *bus, unsigned short addr);
+
+#endif /* __SOUND_I2C_H */