#include <linux/module.h>
#include <linux/types.h>
+#include <linux/slab.h>
#include <linux/ioctl.h>
#include <asm/uaccess.h>
#include <linux/i2c.h>
#include <linux/i2c-id.h>
-#include <linux/videodev.h>
-#include <media/audiochip.h>
+#include <linux/videodev2.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-chip-ident.h>
+#include <media/v4l2-i2c-drv.h>
MODULE_DESCRIPTION("i2c device driver for cs53l32a Audio ADC");
MODULE_AUTHOR("Martin Vaughan");
MODULE_LICENSE("GPL");
-static int debug = 0;
+static int debug;
module_param(debug, bool, 0644);
-MODULE_PARM_DESC(debug, "Debugging messages\n\t\t\t0=Off (default), 1=On");
+MODULE_PARM_DESC(debug, "Debugging messages, 0=Off (default), 1=On");
-#define cs53l32a_dbg(fmt, arg...) \
- do { \
- if (debug) \
- printk(KERN_INFO "%s debug %d-%04x: " fmt, \
- client->driver->driver.name, \
- i2c_adapter_id(client->adapter), client->addr , ## arg); \
- } while (0)
-
-#define cs53l32a_err(fmt, arg...) do { \
- printk(KERN_ERR "%s %d-%04x: " fmt, client->driver->driver.name, \
- i2c_adapter_id(client->adapter), client->addr , ## arg); } while (0)
-#define cs53l32a_info(fmt, arg...) do { \
- printk(KERN_INFO "%s %d-%04x: " fmt, client->driver->driver.name, \
- i2c_adapter_id(client->adapter), client->addr , ## arg); } while (0)
-
-static unsigned short normal_i2c[] = { 0x22 >> 1, I2C_CLIENT_END };
-
-
-I2C_CLIENT_INSMOD;
/* ----------------------------------------------------------------------- */
-static int cs53l32a_write(struct i2c_client *client, u8 reg, u8 value)
+static int cs53l32a_write(struct v4l2_subdev *sd, u8 reg, u8 value)
{
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+
return i2c_smbus_write_byte_data(client, reg, value);
}
-static int cs53l32a_read(struct i2c_client *client, u8 reg)
+static int cs53l32a_read(struct v4l2_subdev *sd, u8 reg)
{
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+
return i2c_smbus_read_byte_data(client, reg);
}
-static int cs53l32a_command(struct i2c_client *client, unsigned int cmd,
- void *arg)
+static int cs53l32a_s_routing(struct v4l2_subdev *sd,
+ u32 input, u32 output, u32 config)
{
- int *input = arg;
-
- switch (cmd) {
- case AUDC_SET_INPUT:
- switch (*input) {
- case AUDIO_TUNER:
- cs53l32a_write(client, 0x01, 0x01);
- break;
- case AUDIO_EXTERN:
- cs53l32a_write(client, 0x01, 0x21);
- break;
- case AUDIO_MUTE:
- cs53l32a_write(client, 0x03, 0xF0);
- break;
- case AUDIO_UNMUTE:
- cs53l32a_write(client, 0x03, 0x30);
- break;
- default:
- cs53l32a_err("Invalid input %d.\n", *input);
- return -EINVAL;
- }
- break;
-
- case VIDIOC_S_CTRL:
- {
- struct v4l2_control *ctrl = arg;
-
- if (ctrl->id != V4L2_CID_AUDIO_VOLUME)
- return -EINVAL;
- if (ctrl->value > 12 || ctrl->value < -90)
- return -EINVAL;
- cs53l32a_write(client, 0x04, (u8) ctrl->value);
- cs53l32a_write(client, 0x05, (u8) ctrl->value);
- break;
- }
-
- case VIDIOC_LOG_STATUS:
- {
- u8 v = cs53l32a_read(client, 0x01);
- u8 m = cs53l32a_read(client, 0x03);
-
- cs53l32a_info("Input: %s%s\n",
- v == 0x21 ? "external line in" : "tuner",
- (m & 0xC0) ? " (muted)" : "");
- break;
- }
-
- default:
+ /* There are 2 physical inputs, but the second input can be
+ placed in two modes, the first mode bypasses the PGA (gain),
+ the second goes through the PGA. Hence there are three
+ possible inputs to choose from. */
+ if (input > 2) {
+ v4l2_err(sd, "Invalid input %d.\n", input);
return -EINVAL;
}
+ cs53l32a_write(sd, 0x01, 0x01 + (input << 4));
+ return 0;
+}
+
+static int cs53l32a_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
+{
+ if (ctrl->id == V4L2_CID_AUDIO_MUTE) {
+ ctrl->value = (cs53l32a_read(sd, 0x03) & 0xc0) != 0;
+ return 0;
+ }
+ if (ctrl->id != V4L2_CID_AUDIO_VOLUME)
+ return -EINVAL;
+ ctrl->value = (s8)cs53l32a_read(sd, 0x04);
+ return 0;
+}
+
+static int cs53l32a_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
+{
+ if (ctrl->id == V4L2_CID_AUDIO_MUTE) {
+ cs53l32a_write(sd, 0x03, ctrl->value ? 0xf0 : 0x30);
+ return 0;
+ }
+ if (ctrl->id != V4L2_CID_AUDIO_VOLUME)
+ return -EINVAL;
+ if (ctrl->value > 12 || ctrl->value < -96)
+ return -EINVAL;
+ cs53l32a_write(sd, 0x04, (u8) ctrl->value);
+ cs53l32a_write(sd, 0x05, (u8) ctrl->value);
+ return 0;
+}
+
+static int cs53l32a_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+
+ return v4l2_chip_ident_i2c_client(client,
+ chip, V4L2_IDENT_CS53l32A, 0);
+}
+
+static int cs53l32a_log_status(struct v4l2_subdev *sd)
+{
+ u8 v = cs53l32a_read(sd, 0x01);
+ u8 m = cs53l32a_read(sd, 0x03);
+ s8 vol = cs53l32a_read(sd, 0x04);
+
+ v4l2_info(sd, "Input: %d%s\n", (v >> 4) & 3,
+ (m & 0xC0) ? " (muted)" : "");
+ v4l2_info(sd, "Volume: %d dB\n", vol);
return 0;
}
/* ----------------------------------------------------------------------- */
+static const struct v4l2_subdev_core_ops cs53l32a_core_ops = {
+ .log_status = cs53l32a_log_status,
+ .g_chip_ident = cs53l32a_g_chip_ident,
+ .g_ctrl = cs53l32a_g_ctrl,
+ .s_ctrl = cs53l32a_s_ctrl,
+};
+
+static const struct v4l2_subdev_audio_ops cs53l32a_audio_ops = {
+ .s_routing = cs53l32a_s_routing,
+};
+
+static const struct v4l2_subdev_ops cs53l32a_ops = {
+ .core = &cs53l32a_core_ops,
+ .audio = &cs53l32a_audio_ops,
+};
+
+/* ----------------------------------------------------------------------- */
+
/* i2c implementation */
/*
* concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1'
*/
-static struct i2c_driver i2c_driver;
-
-static int cs53l32a_attach(struct i2c_adapter *adapter, int address, int kind)
+static int cs53l32a_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
{
- struct i2c_client *client;
+ struct v4l2_subdev *sd;
int i;
/* Check if the adapter supports the needed features */
- if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
- return 0;
+ if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
+ return -EIO;
- client = kmalloc(sizeof(struct i2c_client), GFP_KERNEL);
- if (client == 0)
- return -ENOMEM;
+ if (!id)
+ strlcpy(client->name, "cs53l32a", sizeof(client->name));
- memset(client, 0, sizeof(struct i2c_client));
- client->addr = address;
- client->adapter = adapter;
- client->driver = &i2c_driver;
- snprintf(client->name, sizeof(client->name) - 1, "cs53l32a");
+ v4l_info(client, "chip found @ 0x%x (%s)\n",
+ client->addr << 1, client->adapter->name);
- cs53l32a_info("chip found @ 0x%x (%s)\n", address << 1, adapter->name);
+ sd = kmalloc(sizeof(struct v4l2_subdev), GFP_KERNEL);
+ if (sd == NULL)
+ return -ENOMEM;
+ v4l2_i2c_subdev_init(sd, client, &cs53l32a_ops);
for (i = 1; i <= 7; i++) {
- u8 v = cs53l32a_read(client, i);
+ u8 v = cs53l32a_read(sd, i);
- cs53l32a_dbg("Read Reg %d %02x\n", i, v);
+ v4l2_dbg(1, debug, sd, "Read Reg %d %02x\n", i, v);
}
/* Set cs53l32a internal register for Adaptec 2010/2410 setup */
- cs53l32a_write(client, 0x01, (u8) 0x21);
- cs53l32a_write(client, 0x02, (u8) 0x29);
- cs53l32a_write(client, 0x03, (u8) 0x30);
- cs53l32a_write(client, 0x04, (u8) 0x00);
- cs53l32a_write(client, 0x05, (u8) 0x00);
- cs53l32a_write(client, 0x06, (u8) 0x00);
- cs53l32a_write(client, 0x07, (u8) 0x00);
+ cs53l32a_write(sd, 0x01, (u8) 0x21);
+ cs53l32a_write(sd, 0x02, (u8) 0x29);
+ cs53l32a_write(sd, 0x03, (u8) 0x30);
+ cs53l32a_write(sd, 0x04, (u8) 0x00);
+ cs53l32a_write(sd, 0x05, (u8) 0x00);
+ cs53l32a_write(sd, 0x06, (u8) 0x00);
+ cs53l32a_write(sd, 0x07, (u8) 0x00);
/* Display results, should be 0x21,0x29,0x30,0x00,0x00,0x00,0x00 */
for (i = 1; i <= 7; i++) {
- u8 v = cs53l32a_read(client, i);
+ u8 v = cs53l32a_read(sd, i);
- cs53l32a_dbg("Read Reg %d %02x\n", i, v);
+ v4l2_dbg(1, debug, sd, "Read Reg %d %02x\n", i, v);
}
-
- i2c_attach_client(client);
-
- return 0;
-}
-
-static int cs53l32a_probe(struct i2c_adapter *adapter)
-{
-#ifdef I2C_CLASS_TV_ANALOG
- if (adapter->class & I2C_CLASS_TV_ANALOG)
-#else
- if (adapter->id == I2C_HW_B_BT848)
-#endif
- return i2c_probe(adapter, &addr_data, cs53l32a_attach);
return 0;
}
-static int cs53l32a_detach(struct i2c_client *client)
+static int cs53l32a_remove(struct i2c_client *client)
{
- int err;
-
- err = i2c_detach_client(client);
- if (err) {
- return err;
- }
- kfree(client);
+ struct v4l2_subdev *sd = i2c_get_clientdata(client);
+ v4l2_device_unregister_subdev(sd);
+ kfree(sd);
return 0;
}
-/* ----------------------------------------------------------------------- */
-
-/* i2c implementation */
-static struct i2c_driver i2c_driver = {
- .driver = {
- .owner = THIS_MODULE,
- .name = "cs53l32a",
- },
- .id = I2C_DRIVERID_CS53L32A,
- .attach_adapter = cs53l32a_probe,
- .detach_client = cs53l32a_detach,
- .command = cs53l32a_command,
+static const struct i2c_device_id cs53l32a_id[] = {
+ { "cs53l32a", 0 },
+ { }
};
+MODULE_DEVICE_TABLE(i2c, cs53l32a_id);
-
-static int __init cs53l32a_init_module(void)
-{
- return i2c_add_driver(&i2c_driver);
-}
-
-static void __exit cs53l32a_cleanup_module(void)
-{
- i2c_del_driver(&i2c_driver);
-}
-
-module_init(cs53l32a_init_module);
-module_exit(cs53l32a_cleanup_module);
+static struct v4l2_i2c_driver_data v4l2_i2c_data = {
+ .name = "cs53l32a",
+ .remove = cs53l32a_remove,
+ .probe = cs53l32a_probe,
+ .id_table = cs53l32a_id,
+};
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff