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author | Hans Verkuil <hverkuil@xs4all.nl> | 2008-09-07 10:59:54 (GMT) |
---|---|---|
committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2008-10-17 20:17:36 (GMT) |
commit | c18fdcf65732b87f6015ea4e423fc7abf7c26dd2 (patch) | |
tree | 8c283fc744565b5a9745bc981868a067fe52591c | |
parent | a8c26dfe00e147012bd6a1b3bd206b4771bb5bd7 (diff) | |
download | linux-fsl-qoriq-c18fdcf65732b87f6015ea4e423fc7abf7c26dd2.tar.xz |
V4L/DVB (9202): bt866: convert i2c driver for new i2c API
- Convert to use v4l2-i2c-drv-legacy.h to be able to handle the new i2c API
- Cleanups
- Use v4l_dbg/v4l_info to have uniform kernel messages
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
-rw-r--r-- | drivers/media/video/bt866.c | 255 |
1 files changed, 83 insertions, 172 deletions
diff --git a/drivers/media/video/bt866.c b/drivers/media/video/bt866.c index 96b4155..596f9e2 100644 --- a/drivers/media/video/bt866.c +++ b/drivers/media/video/bt866.c @@ -29,42 +29,28 @@ */ #include <linux/module.h> -#include <linux/init.h> -#include <linux/delay.h> -#include <linux/errno.h> -#include <linux/fs.h> -#include <linux/kernel.h> -#include <linux/major.h> -#include <linux/slab.h> -#include <linux/mm.h> -#include <linux/signal.h> -#include <asm/io.h> -#include <asm/pgtable.h> -#include <asm/page.h> -#include <linux/sched.h> #include <linux/types.h> +#include <linux/ioctl.h> +#include <asm/uaccess.h> #include <linux/i2c.h> - +#include <linux/i2c-id.h> #include <linux/videodev.h> -#include <asm/uaccess.h> - #include <linux/video_encoder.h> +#include <media/v4l2-common.h> +#include <media/v4l2-i2c-drv-legacy.h> +MODULE_DESCRIPTION("Brooktree-866 video encoder driver"); +MODULE_AUTHOR("Mike Bernson & Dave Perks"); MODULE_LICENSE("GPL"); -#define BT866_DEVNAME "bt866" -#define I2C_BT866 0x88 - -MODULE_LICENSE("GPL"); - -#define DEBUG(x) /* Debug driver */ +static int debug; +module_param(debug, int, 0); +MODULE_PARM_DESC(debug, "Debug level (0-1)"); /* ----------------------------------------------------------------------- */ struct bt866 { - struct i2c_client *i2c; - int addr; - unsigned char reg[256]; + u8 reg[256]; int norm; int enable; @@ -74,20 +60,45 @@ struct bt866 { int sat; }; -static int bt866_write(struct bt866 *dev, - unsigned char subaddr, unsigned char data); +static int bt866_write(struct i2c_client *client, u8 subaddr, u8 data) +{ + struct bt866 *encoder = i2c_get_clientdata(client); + u8 buffer[2]; + int err; + + buffer[0] = subaddr; + buffer[1] = data; + + encoder->reg[subaddr] = data; + + v4l_dbg(1, debug, client, "write 0x%02x = 0x%02x\n", subaddr, data); + + for (err = 0; err < 3;) { + if (i2c_master_send(client, buffer, 2) == 2) + break; + err++; + v4l_warn(client, "error #%d writing to 0x%02x\n", + err, subaddr); + schedule_timeout_interruptible(msecs_to_jiffies(100)); + } + if (err == 3) { + v4l_warn(client, "giving up\n"); + return -1; + } + + return 0; +} -static int bt866_do_command(struct bt866 *encoder, - unsigned int cmd, void *arg) +static int bt866_command(struct i2c_client *client, unsigned cmd, void *arg) { + struct bt866 *encoder = i2c_get_clientdata(client); + switch (cmd) { case ENCODER_GET_CAPABILITIES: { struct video_encoder_capability *cap = arg; - DEBUG(printk - (KERN_INFO "%s: get capabilities\n", - encoder->i2c->name)); + v4l_dbg(1, debug, client, "get capabilities\n"); cap->flags = VIDEO_ENCODER_PAL @@ -95,18 +106,16 @@ static int bt866_do_command(struct bt866 *encoder, | VIDEO_ENCODER_CCIR; cap->inputs = 2; cap->outputs = 1; + break; } - break; case ENCODER_SET_NORM: { int *iarg = arg; - DEBUG(printk(KERN_INFO "%s: set norm %d\n", - encoder->i2c->name, *iarg)); + v4l_dbg(1, debug, client, "set norm %d\n", *iarg); switch (*iarg) { - case VIDEO_MODE_NTSC: break; @@ -115,11 +124,10 @@ static int bt866_do_command(struct bt866 *encoder, default: return -EINVAL; - } encoder->norm = *iarg; + break; } - break; case ENCODER_SET_INPUT: { @@ -155,7 +163,7 @@ static int bt866_do_command(struct bt866 *encoder, u8 val; for (i = 0; i < ARRAY_SIZE(init) / 2; i += 2) - bt866_write(encoder, init[i], init[i+1]); + bt866_write(client, init[i], init[i+1]); val = encoder->reg[0xdc]; @@ -164,17 +172,16 @@ static int bt866_do_command(struct bt866 *encoder, else val &= ~0x40; /* !CBSWAP */ - bt866_write(encoder, 0xdc, val); + bt866_write(client, 0xdc, val); val = encoder->reg[0xcc]; if (*iarg == 2) val |= 0x01; /* OSDBAR */ else val &= ~0x01; /* !OSDBAR */ - bt866_write(encoder, 0xcc, val); + bt866_write(client, 0xcc, val); - DEBUG(printk(KERN_INFO "%s: set input %d\n", - encoder->i2c->name, *iarg)); + v4l_dbg(1, debug, client, "set input %d\n", *iarg); switch (*iarg) { case 0: @@ -183,48 +190,44 @@ static int bt866_do_command(struct bt866 *encoder, break; default: return -EINVAL; - } + break; } - break; case ENCODER_SET_OUTPUT: { int *iarg = arg; - DEBUG(printk(KERN_INFO "%s: set output %d\n", - encoder->i2c->name, *iarg)); + v4l_dbg(1, debug, client, "set output %d\n", *iarg); /* not much choice of outputs */ if (*iarg != 0) return -EINVAL; + break; } - break; case ENCODER_ENABLE_OUTPUT: { int *iarg = arg; encoder->enable = !!*iarg; - DEBUG(printk - (KERN_INFO "%s: enable output %d\n", - encoder->i2c->name, encoder->enable)); + v4l_dbg(1, debug, client, "enable output %d\n", encoder->enable); + break; } - break; case 4711: { int *iarg = arg; __u8 val; - printk("bt866: square = %d\n", *iarg); + v4l_dbg(1, debug, client, "square %d\n", *iarg); val = encoder->reg[0xdc]; if (*iarg) val |= 1; /* SQUARE */ else val &= ~1; /* !SQUARE */ - bt866_write(encoder, 0xdc, val); + bt866_write(client, 0xdc, val); break; } @@ -235,141 +238,49 @@ static int bt866_do_command(struct bt866 *encoder, return 0; } -static int bt866_write(struct bt866 *encoder, - unsigned char subaddr, unsigned char data) -{ - unsigned char buffer[2]; - int err; +static unsigned short normal_i2c[] = { 0x88 >> 1, I2C_CLIENT_END }; - buffer[0] = subaddr; - buffer[1] = data; - - encoder->reg[subaddr] = data; +I2C_CLIENT_INSMOD; - DEBUG(printk - ("%s: write 0x%02X = 0x%02X\n", - encoder->i2c->name, subaddr, data)); - - for (err = 0; err < 3;) { - if (i2c_master_send(encoder->i2c, buffer, 2) == 2) - break; - err++; - printk(KERN_WARNING "%s: I/O error #%d " - "(write 0x%02x/0x%02x)\n", - encoder->i2c->name, err, encoder->addr, subaddr); - schedule_timeout_interruptible(msecs_to_jiffies(100)); - } - if (err == 3) { - printk(KERN_WARNING "%s: giving up\n", - encoder->i2c->name); - return -1; - } - - return 0; -} - -static int bt866_attach(struct i2c_adapter *adapter); -static int bt866_detach(struct i2c_client *client); -static int bt866_command(struct i2c_client *client, - unsigned int cmd, void *arg); - - -/* Addresses to scan */ -static unsigned short normal_i2c[] = {I2C_BT866>>1, I2C_CLIENT_END}; -static unsigned short probe[2] = {I2C_CLIENT_END, I2C_CLIENT_END}; -static unsigned short ignore[2] = {I2C_CLIENT_END, I2C_CLIENT_END}; - -static struct i2c_client_address_data addr_data = { - normal_i2c, - probe, - ignore, -}; - -static struct i2c_driver i2c_driver_bt866 = { - .driver.name = BT866_DEVNAME, - .id = I2C_DRIVERID_BT866, - .attach_adapter = bt866_attach, - .detach_client = bt866_detach, - .command = bt866_command -}; - - -static struct i2c_client bt866_client_tmpl = -{ - .name = "(nil)", - .addr = 0, - .adapter = NULL, - .driver = &i2c_driver_bt866, -}; - -static int bt866_found_proc(struct i2c_adapter *adapter, - int addr, int kind) +static int bt866_probe(struct i2c_client *client, + const struct i2c_device_id *id) { struct bt866 *encoder; - struct i2c_client *client; - client = kzalloc(sizeof(*client), GFP_KERNEL); - if (client == NULL) - return -ENOMEM; - memcpy(client, &bt866_client_tmpl, sizeof(*client)); + v4l_info(client, "chip found @ 0x%x (%s)\n", + client->addr << 1, client->adapter->name); encoder = kzalloc(sizeof(*encoder), GFP_KERNEL); - if (encoder == NULL) { - kfree(client); + if (encoder == NULL) return -ENOMEM; - } i2c_set_clientdata(client, encoder); - client->adapter = adapter; - client->addr = addr; - sprintf(client->name, "%s-%02x", BT866_DEVNAME, adapter->id); - - encoder->i2c = client; - encoder->addr = addr; - //encoder->encoder_type = ENCODER_TYPE_UNKNOWN; - - /* initialize */ - - i2c_attach_client(client); - - return 0; -} - -static int bt866_attach(struct i2c_adapter *adapter) -{ - if (adapter->id == I2C_HW_B_ZR36067) - return i2c_probe(adapter, &addr_data, bt866_found_proc); - return 0; -} - -static int bt866_detach(struct i2c_client *client) -{ - struct bt866 *encoder = i2c_get_clientdata(client); - - i2c_detach_client(client); - kfree(encoder); - kfree(client); - return 0; } -static int bt866_command(struct i2c_client *client, - unsigned int cmd, void *arg) +static int bt866_remove(struct i2c_client *client) { - struct bt866 *encoder = i2c_get_clientdata(client); - return bt866_do_command(encoder, cmd, arg); -} - -static int __devinit bt866_init(void) -{ - i2c_add_driver(&i2c_driver_bt866); + kfree(i2c_get_clientdata(client)); return 0; } -static void __devexit bt866_exit(void) +static int bt866_legacy_probe(struct i2c_adapter *adapter) { - i2c_del_driver(&i2c_driver_bt866); + return adapter->id == I2C_HW_B_ZR36067; } -module_init(bt866_init); -module_exit(bt866_exit); +static const struct i2c_device_id bt866_id[] = { + { "bt866", 0 }, + { } +}; +MODULE_DEVICE_TABLE(i2c, bt866_id); + +static struct v4l2_i2c_driver_data v4l2_i2c_data = { + .name = "bt866", + .driverid = I2C_DRIVERID_BT866, + .command = bt866_command, + .probe = bt866_probe, + .remove = bt866_remove, + .legacy_probe = bt866_legacy_probe, + .id_table = bt866_id, +}; |