diff options
Diffstat (limited to 'drivers/media/video/tda9840.c')
| -rw-r--r-- | drivers/media/video/tda9840.c | 188 |
1 files changed, 116 insertions, 72 deletions
diff --git a/drivers/media/video/tda9840.c b/drivers/media/video/tda9840.c index 1c391f0328fd..2644e0dc9251 100644 --- a/drivers/media/video/tda9840.c +++ b/drivers/media/video/tda9840.c @@ -29,7 +29,7 @@ #include <linux/module.h> #include <linux/ioctl.h> #include <linux/i2c.h> -#include <media/v4l2-common.h> +#include <media/v4l2-device.h> #include <media/v4l2-i2c-drv-legacy.h> #include "tda9840.h" @@ -62,85 +62,89 @@ static unsigned short normal_i2c[] = { I2C_ADDR_TDA9840, I2C_CLIENT_END }; /* magic definition of all other variables and things */ I2C_CLIENT_INSMOD; -static void tda9840_write(struct i2c_client *client, u8 reg, u8 val) +static void tda9840_write(struct v4l2_subdev *sd, u8 reg, u8 val) { + struct i2c_client *client = v4l2_get_subdevdata(sd); + if (i2c_smbus_write_byte_data(client, reg, val)) - v4l_dbg(1, debug, client, "error writing %02x to %02x\n", + v4l2_dbg(1, debug, sd, "error writing %02x to %02x\n", val, reg); } -static int tda9840_command(struct i2c_client *client, unsigned cmd, void *arg) +static int tda9840_s_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *t) { - int byte = *(int *)arg; - - switch (cmd) { - case VIDIOC_S_TUNER: { - struct v4l2_tuner *t = arg; - int byte; + int byte; - if (t->index) - return -EINVAL; + if (t->index) + return -EINVAL; - switch (t->audmode) { - case V4L2_TUNER_MODE_STEREO: - byte = TDA9840_SET_STEREO; - break; - case V4L2_TUNER_MODE_LANG1_LANG2: - byte = TDA9840_SET_BOTH; - break; - case V4L2_TUNER_MODE_LANG1: - byte = TDA9840_SET_LANG1; - break; - case V4L2_TUNER_MODE_LANG2: - byte = TDA9840_SET_LANG2; - break; - default: - byte = TDA9840_SET_MONO; - break; - } - v4l_dbg(1, debug, client, "TDA9840_SWITCH: 0x%02x\n", byte); - tda9840_write(client, SWITCH, byte); + switch (t->audmode) { + case V4L2_TUNER_MODE_STEREO: + byte = TDA9840_SET_STEREO; break; + case V4L2_TUNER_MODE_LANG1_LANG2: + byte = TDA9840_SET_BOTH; + break; + case V4L2_TUNER_MODE_LANG1: + byte = TDA9840_SET_LANG1; + break; + case V4L2_TUNER_MODE_LANG2: + byte = TDA9840_SET_LANG2; + break; + default: + byte = TDA9840_SET_MONO; + break; + } + v4l2_dbg(1, debug, sd, "TDA9840_SWITCH: 0x%02x\n", byte); + tda9840_write(sd, SWITCH, byte); + return 0; +} + +static int tda9840_g_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *t) +{ + struct i2c_client *client = v4l2_get_subdevdata(sd); + u8 byte; + + t->rxsubchans = V4L2_TUNER_SUB_MONO; + if (1 != i2c_master_recv(client, &byte, 1)) { + v4l2_dbg(1, debug, sd, + "i2c_master_recv() failed\n"); + return -EIO; + } + + if (byte & 0x80) { + v4l2_dbg(1, debug, sd, + "TDA9840_DETECT: register contents invalid\n"); + return -EINVAL; } - case VIDIOC_G_TUNER: { - struct v4l2_tuner *t = arg; - u8 byte; + v4l2_dbg(1, debug, sd, "TDA9840_DETECT: byte: 0x%02x\n", byte); + switch (byte & 0x60) { + case 0x00: t->rxsubchans = V4L2_TUNER_SUB_MONO; - if (1 != i2c_master_recv(client, &byte, 1)) { - v4l_dbg(1, debug, client, - "i2c_master_recv() failed\n"); - return -EIO; - } - - if (byte & 0x80) { - v4l_dbg(1, debug, client, - "TDA9840_DETECT: register contents invalid\n"); - return -EINVAL; - } - - v4l_dbg(1, debug, client, "TDA9840_DETECT: byte: 0x%02x\n", byte); - - switch (byte & 0x60) { - case 0x00: - t->rxsubchans = V4L2_TUNER_SUB_MONO; - break; - case 0x20: - t->rxsubchans = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2; - break; - case 0x40: - t->rxsubchans = V4L2_TUNER_SUB_STEREO | V4L2_TUNER_SUB_MONO; - break; - default: /* Incorrect detect */ - t->rxsubchans = V4L2_TUNER_MODE_MONO; - break; - } + break; + case 0x20: + t->rxsubchans = V4L2_TUNER_SUB_LANG1 | V4L2_TUNER_SUB_LANG2; + break; + case 0x40: + t->rxsubchans = V4L2_TUNER_SUB_STEREO | V4L2_TUNER_SUB_MONO; + break; + default: /* Incorrect detect */ + t->rxsubchans = V4L2_TUNER_MODE_MONO; break; } + return 0; +} +static int tda9840_ioctl(struct v4l2_subdev *sd, unsigned cmd, void *arg) +{ + int byte; + + switch (cmd) { case TDA9840_LEVEL_ADJUST: - v4l_dbg(1, debug, client, "TDA9840_LEVEL_ADJUST: %d\n", byte); + byte = *(int *)arg; + v4l2_dbg(1, debug, sd, "TDA9840_LEVEL_ADJUST: %d\n", byte); /* check for correct range */ if (byte > 25 || byte < -20) @@ -152,11 +156,12 @@ static int tda9840_command(struct i2c_client *client, unsigned cmd, void *arg) byte += 0x8; else byte = -byte; - tda9840_write(client, LEVEL_ADJUST, byte); + tda9840_write(sd, LEVEL_ADJUST, byte); break; case TDA9840_STEREO_ADJUST: - v4l_dbg(1, debug, client, "TDA9840_STEREO_ADJUST: %d\n", byte); + byte = *(int *)arg; + v4l2_dbg(1, debug, sd, "TDA9840_STEREO_ADJUST: %d\n", byte); /* check for correct range */ if (byte > 25 || byte < -24) @@ -169,18 +174,41 @@ static int tda9840_command(struct i2c_client *client, unsigned cmd, void *arg) else byte = -byte; - tda9840_write(client, STEREO_ADJUST, byte); + tda9840_write(sd, STEREO_ADJUST, byte); break; default: return -ENOIOCTLCMD; } - return 0; } +static int tda9840_command(struct i2c_client *client, unsigned cmd, void *arg) +{ + return v4l2_subdev_command(i2c_get_clientdata(client), cmd, arg); +} + +/* ----------------------------------------------------------------------- */ + +static const struct v4l2_subdev_core_ops tda9840_core_ops = { + .ioctl = tda9840_ioctl, +}; + +static const struct v4l2_subdev_tuner_ops tda9840_tuner_ops = { + .s_tuner = tda9840_s_tuner, + .g_tuner = tda9840_g_tuner, +}; + +static const struct v4l2_subdev_ops tda9840_ops = { + .core = &tda9840_core_ops, + .tuner = &tda9840_tuner_ops, +}; + +/* ----------------------------------------------------------------------- */ + static int tda9840_probe(struct i2c_client *client, const struct i2c_device_id *id) { + struct v4l2_subdev *sd; int result; int byte; @@ -188,23 +216,38 @@ static int tda9840_probe(struct i2c_client *client, if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_READ_BYTE_DATA | I2C_FUNC_SMBUS_WRITE_BYTE_DATA)) - return 0; + return -EIO; v4l_info(client, "chip found @ 0x%x (%s)\n", client->addr << 1, client->adapter->name); + sd = kmalloc(sizeof(struct v4l2_subdev), GFP_KERNEL); + if (sd == NULL) + return -ENOMEM; + v4l2_i2c_subdev_init(sd, client, &tda9840_ops); + /* set initial values for level & stereo - adjustment, mode */ byte = 0; - result = tda9840_command(client, TDA9840_LEVEL_ADJUST, &byte); - result += tda9840_command(client, TDA9840_STEREO_ADJUST, &byte); - tda9840_write(client, SWITCH, TDA9840_SET_STEREO); + result = tda9840_ioctl(sd, TDA9840_LEVEL_ADJUST, &byte); + result |= tda9840_ioctl(sd, TDA9840_STEREO_ADJUST, &byte); + tda9840_write(sd, SWITCH, TDA9840_SET_STEREO); if (result) { - v4l_dbg(1, debug, client, "could not initialize tda9840\n"); + v4l2_dbg(1, debug, sd, "could not initialize tda9840\n"); + kfree(sd); return -ENODEV; } return 0; } +static int tda9840_remove(struct i2c_client *client) +{ + struct v4l2_subdev *sd = i2c_get_clientdata(client); + + v4l2_device_unregister_subdev(sd); + kfree(sd); + return 0; +} + static int tda9840_legacy_probe(struct i2c_adapter *adapter) { /* Let's see whether this is a known adapter we can attach to. @@ -222,6 +265,7 @@ static struct v4l2_i2c_driver_data v4l2_i2c_data = { .driverid = I2C_DRIVERID_TDA9840, .command = tda9840_command, .probe = tda9840_probe, + .remove = tda9840_remove, .legacy_probe = tda9840_legacy_probe, .id_table = tda9840_id, }; |