diff options
Diffstat (limited to 'sound/oss/dmasound/dac3550a.c')
| -rw-r--r-- | sound/oss/dmasound/dac3550a.c | 209 |
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); -} |