summaryrefslogtreecommitdiffstats
path: root/sound/oss/dmasound/dac3550a.c
diff options
context:
space:
mode:
Diffstat (limited to 'sound/oss/dmasound/dac3550a.c')
-rw-r--r--sound/oss/dmasound/dac3550a.c209
1 files changed, 0 insertions, 209 deletions
diff --git a/sound/oss/dmasound/dac3550a.c b/sound/oss/dmasound/dac3550a.c
deleted file mode 100644
index 0f0d03a55dab..000000000000
--- a/sound/oss/dmasound/dac3550a.c
+++ /dev/null
@@ -1,209 +0,0 @@
-/*
- * Driver for the i2c/i2s based DAC3550a sound chip used
- * on some Apple iBooks. Also known as "DACA".
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file COPYING in the main directory of this archive
- * for more details.
- */
-
-#include <linux/module.h>
-#include <linux/slab.h>
-#include <linux/delay.h>
-#include <linux/proc_fs.h>
-#include <linux/ioport.h>
-#include <linux/sysctl.h>
-#include <linux/types.h>
-#include <linux/i2c.h>
-#include <linux/init.h>
-#include <asm/uaccess.h>
-#include <asm/errno.h>
-#include <asm/io.h>
-
-#include "dmasound.h"
-
-/* FYI: This code was derived from the tas3001c.c Texas/Tumbler mixer
- * control code, as well as info derived from the AppleDACAAudio driver
- * from Darwin CVS (main thing I derived being register numbers and
- * values, as well as when to make the calls). */
-
-#define I2C_DRIVERID_DACA (0xFDCB)
-
-#define DACA_VERSION "0.1"
-#define DACA_DATE "20010930"
-
-static int cur_left_vol;
-static int cur_right_vol;
-static struct i2c_client *daca_client;
-
-static int daca_attach_adapter(struct i2c_adapter *adapter);
-static int daca_detect_client(struct i2c_adapter *adapter, int address);
-static int daca_detach_client(struct i2c_client *client);
-
-struct i2c_driver daca_driver = {
- .driver = {
- .name = "DAC3550A driver V " DACA_VERSION,
- },
- .id = I2C_DRIVERID_DACA,
- .attach_adapter = daca_attach_adapter,
- .detach_client = daca_detach_client,
-};
-
-#define VOL_MAX ((1<<20) - 1)
-
-void daca_get_volume(uint * left_vol, uint *right_vol)
-{
- *left_vol = cur_left_vol >> 5;
- *right_vol = cur_right_vol >> 5;
-}
-
-int daca_set_volume(uint left_vol, uint right_vol)
-{
- unsigned short voldata;
-
- if (!daca_client)
- return -1;
-
- /* Derived from experience, not from any specific values */
- left_vol <<= 5;
- right_vol <<= 5;
-
- if (left_vol > VOL_MAX)
- left_vol = VOL_MAX;
- if (right_vol > VOL_MAX)
- right_vol = VOL_MAX;
-
- voldata = ((left_vol >> 14) & 0x3f) << 8;
- voldata |= (right_vol >> 14) & 0x3f;
-
- if (i2c_smbus_write_word_data(daca_client, 2, voldata) < 0) {
- printk("daca: failed to set volume \n");
- return -1;
- }
-
- cur_left_vol = left_vol;
- cur_right_vol = right_vol;
-
- return 0;
-}
-
-int daca_leave_sleep(void)
-{
- if (!daca_client)
- return -1;
-
- /* Do a short sleep, just to make sure I2C bus is awake and paying
- * attention to us
- */
- msleep(20);
- /* Write the sample rate reg the value it needs */
- i2c_smbus_write_byte_data(daca_client, 1, 8);
- daca_set_volume(cur_left_vol >> 5, cur_right_vol >> 5);
- /* Another short delay, just to make sure the other I2C bus writes
- * have taken...
- */
- msleep(20);
- /* Write the global config reg - invert right power amp,
- * DAC on, use 5-volt mode */
- i2c_smbus_write_byte_data(daca_client, 3, 0x45);
-
- return 0;
-}
-
-int daca_enter_sleep(void)
-{
- if (!daca_client)
- return -1;
-
- i2c_smbus_write_byte_data(daca_client, 1, 8);
- daca_set_volume(cur_left_vol >> 5, cur_right_vol >> 5);
-
- /* Write the global config reg - invert right power amp,
- * DAC on, enter low-power mode, use 5-volt mode
- */
- i2c_smbus_write_byte_data(daca_client, 3, 0x65);
-
- return 0;
-}
-
-static int daca_attach_adapter(struct i2c_adapter *adapter)
-{
- if (!strncmp(adapter->name, "mac-io", 6))
- daca_detect_client(adapter, 0x4d);
- return 0;
-}
-
-static int daca_init_client(struct i2c_client * new_client)
-{
- /*
- * Probe is not working with the current i2c-keywest
- * driver. We try to use addr 0x4d on each adapters
- * instead, by setting the format register.
- *
- * FIXME: I'm sure that can be obtained from the
- * device-tree. --BenH.
- */
-
- /* Write the global config reg - invert right power amp,
- * DAC on, use 5-volt mode
- */
- if (i2c_smbus_write_byte_data(new_client, 3, 0x45))
- return -1;
-
- i2c_smbus_write_byte_data(new_client, 1, 8);
- daca_client = new_client;
- daca_set_volume(15000, 15000);
-
- return 0;
-}
-
-static int daca_detect_client(struct i2c_adapter *adapter, int address)
-{
- const char *client_name = "DAC 3550A Digital Equalizer";
- struct i2c_client *new_client;
- int rc = -ENODEV;
-
- new_client = kzalloc(sizeof(*new_client), GFP_KERNEL);
- if (!new_client)
- return -ENOMEM;
-
- new_client->addr = address;
- new_client->adapter = adapter;
- new_client->driver = &daca_driver;
- new_client->flags = 0;
- strcpy(new_client->name, client_name);
-
- if (daca_init_client(new_client))
- goto bail;
-
- /* Tell the i2c layer a new client has arrived */
- if (i2c_attach_client(new_client))
- goto bail;
-
- return 0;
- bail:
- kfree(new_client);
- return rc;
-}
-
-
-static int daca_detach_client(struct i2c_client *client)
-{
- if (client == daca_client)
- daca_client = NULL;
-
- i2c_detach_client(client);
- kfree(client);
- return 0;
-}
-
-void daca_cleanup(void)
-{
- i2c_del_driver(&daca_driver);
-}
-
-int daca_init(void)
-{
- printk("dac3550a driver version %s (%s)\n",DACA_VERSION,DACA_DATE);
- return i2c_add_driver(&daca_driver);
-}