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media: stv6110x: Implement probe/remove for stv6110x 

Refactor out the common parts of stv6110x_probe() and stv6110x_attach()
into separate functions.

This provides the needed functionality to use dvb_module_probe() instead
of dvb_attach()!

Signed-off-by: Tobias Klausmann <tobias.johannes.klausmann@mni.thm.de>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
This commit is contained in:
Tobias Klausmann 2019-05-29 12:56:33 -04:00 committed by Mauro Carvalho Chehab
parent 2659417876
commit 3c8f4cd271
3 changed files with 118 additions and 23 deletions
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135
drivers/media/dvb-frontends/stv6110x.c
View File

@ -333,6 +333,41 @@ static void stv6110x_release(struct dvb_frontend *fe)
kfree(stv6110x);
}
static void st6110x_init_regs(struct stv6110x_state *stv6110x)
{
u8 default_regs[] = {0x07, 0x11, 0xdc, 0x85, 0x17, 0x01, 0xe6, 0x1e};
memcpy(stv6110x->regs, default_regs, 8);
}
static void stv6110x_setup_divider(struct stv6110x_state *stv6110x)
{
switch (stv6110x->config->clk_div) {
default:
case 1:
STV6110x_SETFIELD(stv6110x->regs[STV6110x_CTRL2],
CTRL2_CO_DIV,
0);
break;
case 2:
STV6110x_SETFIELD(stv6110x->regs[STV6110x_CTRL2],
CTRL2_CO_DIV,
1);
break;
case 4:
STV6110x_SETFIELD(stv6110x->regs[STV6110x_CTRL2],
CTRL2_CO_DIV,
2);
break;
case 8:
case 0:
STV6110x_SETFIELD(stv6110x->regs[STV6110x_CTRL2],
CTRL2_CO_DIV,
3);
break;
}
}
static const struct dvb_tuner_ops stv6110x_ops = {
.info = {
.name = "STV6110(A) Silicon Tuner",
@ -342,7 +377,7 @@ static const struct dvb_tuner_ops stv6110x_ops = {
.release = stv6110x_release
};
static const struct stv6110x_devctl stv6110x_ctl = {
static struct stv6110x_devctl stv6110x_ctl = {
.tuner_init = stv6110x_init,
.tuner_sleep = stv6110x_sleep,
.tuner_set_mode = stv6110x_set_mode,
@ -356,48 +391,104 @@ static const struct stv6110x_devctl stv6110x_ctl = {
.tuner_get_status = stv6110x_get_status,
};
static void stv6110x_set_frontend_opts(struct stv6110x_state *stv6110x)
{
stv6110x->frontend->tuner_priv = stv6110x;
stv6110x->frontend->ops.tuner_ops = stv6110x_ops;
}
static struct stv6110x_devctl *stv6110x_get_devctl(struct i2c_client *client)
{
struct stv6110x_state *stv6110x = i2c_get_clientdata(client);
dev_dbg(&client->dev, "\n");
return stv6110x->devctl;
}
static int stv6110x_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct stv6110x_config *config = client->dev.platform_data;
struct stv6110x_state *stv6110x;
stv6110x = kzalloc(sizeof(*stv6110x), GFP_KERNEL);
if (!stv6110x)
return -ENOMEM;
stv6110x->frontend = config->frontend;
stv6110x->i2c = client->adapter;
stv6110x->config = config;
stv6110x->devctl = &stv6110x_ctl;
st6110x_init_regs(stv6110x);
stv6110x_setup_divider(stv6110x);
stv6110x_set_frontend_opts(stv6110x);
dev_info(&stv6110x->i2c->dev, "Probed STV6110x\n");
i2c_set_clientdata(client, stv6110x);
/* setup callbacks */
config->get_devctl = stv6110x_get_devctl;
return 0;
}
static int stv6110x_remove(struct i2c_client *client)
{
struct stv6110x_state *stv6110x = i2c_get_clientdata(client);
stv6110x_release(stv6110x->frontend);
return 0;
}
const struct stv6110x_devctl *stv6110x_attach(struct dvb_frontend *fe,
const struct stv6110x_config *config,
struct i2c_adapter *i2c)
{
struct stv6110x_state *stv6110x;
u8 default_regs[] = {0x07, 0x11, 0xdc, 0x85, 0x17, 0x01, 0xe6, 0x1e};
stv6110x = kzalloc(sizeof (struct stv6110x_state), GFP_KERNEL);
stv6110x = kzalloc(sizeof(*stv6110x), GFP_KERNEL);
if (!stv6110x)
return NULL;
stv6110x->frontend = fe;
stv6110x->i2c = i2c;
stv6110x->config = config;
stv6110x->devctl = &stv6110x_ctl;
memcpy(stv6110x->regs, default_regs, 8);
/* setup divider */
switch (stv6110x->config->clk_div) {
default:
case 1:
STV6110x_SETFIELD(stv6110x->regs[STV6110x_CTRL2], CTRL2_CO_DIV, 0);
break;
case 2:
STV6110x_SETFIELD(stv6110x->regs[STV6110x_CTRL2], CTRL2_CO_DIV, 1);
break;
case 4:
STV6110x_SETFIELD(stv6110x->regs[STV6110x_CTRL2], CTRL2_CO_DIV, 2);
break;
case 8:
case 0:
STV6110x_SETFIELD(stv6110x->regs[STV6110x_CTRL2], CTRL2_CO_DIV, 3);
break;
}
st6110x_init_regs(stv6110x);
stv6110x_setup_divider(stv6110x);
stv6110x_set_frontend_opts(stv6110x);
fe->tuner_priv = stv6110x;
fe->ops.tuner_ops = stv6110x_ops;
printk(KERN_INFO "%s: Attaching STV6110x\n", __func__);
dev_info(&stv6110x->i2c->dev, "Attaching STV6110x\n");
return stv6110x->devctl;
}
EXPORT_SYMBOL(stv6110x_attach);
static const struct i2c_device_id stv6110x_id_table[] = {
{"stv6110x", 0},
{}
};
MODULE_DEVICE_TABLE(i2c, stv6110x_id_table);
static struct i2c_driver stv6110x_driver = {
.driver = {
.name = "stv6110x",
.suppress_bind_attrs = true,
},
.probe = stv6110x_probe,
.remove = stv6110x_remove,
.id_table = stv6110x_id_table,
};
module_i2c_driver(stv6110x_driver);
MODULE_AUTHOR("Manu Abraham");
MODULE_DESCRIPTION("STV6110x Silicon tuner");
MODULE_LICENSE("GPL");

3
drivers/media/dvb-frontends/stv6110x.h
View File

@ -15,6 +15,9 @@ struct stv6110x_config {
u8 addr;
u32 refclk;
u8 clk_div; /* divisor value for the output clock */
struct dvb_frontend *frontend;
struct stv6110x_devctl* (*get_devctl)(struct i2c_client *i2c);
};
enum tuner_mode {

3
drivers/media/dvb-frontends/stv6110x_priv.h
View File

@ -54,11 +54,12 @@
#define REFCLOCK_MHz (stv6110x->config->refclk / 1000000)
struct stv6110x_state {
struct dvb_frontend *frontend;
struct i2c_adapter *i2c;
const struct stv6110x_config *config;
u8 regs[8];
const struct stv6110x_devctl *devctl;
struct stv6110x_devctl *devctl;
};
#endif /* __STV6110x_PRIV_H */