Instead of repeating countless times a complex logic, use
the new dvb_module_probe()/dvb_module_release(), simplifying
the module.
That reduced about 15% at the module's size:
text data bss dec hex filename
7083 1108 12 8203 200b old/drivers/media/usb/dvb-usb-v2/dvbsky.o
5817 1108 12 6937 1b19 new/drivers/media/usb/dvb-usb-v2/dvbsky.o
Tested with a DVBSky S960C DVB-S2 tuner (0572:960c)
Signed-off-by: Mauro Carvalho Chehab <mchehab@xxxxxxxxxxxxxxxx>
---
drivers/media/usb/dvb-usb-v2/dvbsky.c | 390 +++++++++++-----------------------
1 file changed, 119 insertions(+), 271 deletions(-)
diff --git a/drivers/media/usb/dvb-usb-v2/dvbsky.c b/drivers/media/usb/dvb-usb-v2/dvbsky.c
index 43eb82884555..416231bf381f 100644
--- a/drivers/media/usb/dvb-usb-v2/dvbsky.c
+++ b/drivers/media/usb/dvb-usb-v2/dvbsky.c
@@ -290,61 +290,44 @@ static int dvbsky_usb_read_status(struct dvb_frontend *fe,
return ret;
}
-static const struct m88ds3103_config dvbsky_s960_m88ds3103_config = {
- .i2c_addr = 0x68,
- .clock = 27000000,
- .i2c_wr_max = 33,
- .clock_out = 0,
- .ts_mode = M88DS3103_TS_CI,
- .ts_clk = 16000,
- .ts_clk_pol = 0,
- .agc = 0x99,
- .lnb_hv_pol = 1,
- .lnb_en_pol = 1,
-};
-
static int dvbsky_s960_attach(struct dvb_usb_adapter *adap)
{
struct dvbsky_state *state = adap_to_priv(adap);
struct dvb_usb_device *d = adap_to_d(adap);
- int ret = 0;
- /* demod I2C adapter */
- struct i2c_adapter *i2c_adapter = NULL;
- struct i2c_client *client;
- struct i2c_board_info info;
+ struct i2c_adapter *i2c_adapter;
+ struct m88ds3103_platform_data m88ds3103_pdata = {};
struct ts2020_config ts2020_config = {};
- memset(&info, 0, sizeof(struct i2c_board_info));
/* attach demod */
- adap->fe[0] = dvb_attach(m88ds3103_attach,
- &dvbsky_s960_m88ds3103_config,
- &d->i2c_adap,
- &i2c_adapter);
- if (!adap->fe[0]) {
- dev_err(&d->udev->dev, "dvbsky_s960_attach fail.\n");
- ret = -ENODEV;
- goto fail_attach;
- }
+ m88ds3103_pdata.clk = 27000000;
+ m88ds3103_pdata.i2c_wr_max = 33;
+ m88ds3103_pdata.clk_out = 0;
+ m88ds3103_pdata.ts_mode = M88DS3103_TS_CI;
+ m88ds3103_pdata.ts_clk = 16000;
+ m88ds3103_pdata.ts_clk_pol = 0;
+ m88ds3103_pdata.agc = 0x99;
+ m88ds3103_pdata.lnb_hv_pol = 1,
+ m88ds3103_pdata.lnb_en_pol = 1,
+
+ state->i2c_client_demod = dvb_module_probe("m88ds3103", NULL,
+ &d->i2c_adap,
+ 0x68, &m88ds3103_pdata);
+ if (!state->i2c_client_demod)
+ return -ENODEV;
+
+ adap->fe[0] = m88ds3103_pdata.get_dvb_frontend(state->i2c_client_demod);
+ i2c_adapter = m88ds3103_pdata.get_i2c_adapter(state->i2c_client_demod);
/* attach tuner */
ts2020_config.fe = adap->fe[0];
ts2020_config.get_agc_pwm = m88ds3103_get_agc_pwm;
- strlcpy(info.type, "ts2020", I2C_NAME_SIZE);
- info.addr = 0x60;
- info.platform_data = &ts2020_config;
- request_module("ts2020");
- client = i2c_new_device(i2c_adapter, &info);
- if (client == NULL || client->dev.driver == NULL) {
- dvb_frontend_detach(adap->fe[0]);
- ret = -ENODEV;
- goto fail_attach;
- }
- if (!try_module_get(client->dev.driver->owner)) {
- i2c_unregister_device(client);
- dvb_frontend_detach(adap->fe[0]);
- ret = -ENODEV;
- goto fail_attach;
+ state->i2c_client_tuner = dvb_module_probe("ts2020", NULL,
+ i2c_adapter,
+ 0x60, &ts2020_config);
+ if (!state->i2c_client_tuner) {
+ dvb_module_release(state->i2c_client_demod);
+ return -ENODEV;
}
/* delegate signal strength measurement to tuner */
@@ -359,10 +342,7 @@ static int dvbsky_s960_attach(struct dvb_usb_adapter *adap)
state->fe_set_voltage = adap->fe[0]->ops.set_voltage;
adap->fe[0]->ops.set_voltage = dvbsky_usb_set_voltage;
- state->i2c_client_tuner = client;
-
-fail_attach:
- return ret;
+ return 0;
}
static int dvbsky_usb_ci_set_voltage(struct dvb_frontend *fe,
@@ -412,80 +392,60 @@ static int dvbsky_ci_ctrl(void *priv, u8 read, int addr,
return ret;
}
-static const struct m88ds3103_config dvbsky_s960c_m88ds3103_config = {
- .i2c_addr = 0x68,
- .clock = 27000000,
- .i2c_wr_max = 33,
- .clock_out = 0,
- .ts_mode = M88DS3103_TS_CI,
- .ts_clk = 10000,
- .ts_clk_pol = 1,
- .agc = 0x99,
- .lnb_hv_pol = 0,
- .lnb_en_pol = 1,
-};
-
static int dvbsky_s960c_attach(struct dvb_usb_adapter *adap)
{
struct dvbsky_state *state = adap_to_priv(adap);
struct dvb_usb_device *d = adap_to_d(adap);
- int ret = 0;
- /* demod I2C adapter */
- struct i2c_adapter *i2c_adapter = NULL;
- struct i2c_client *client_tuner, *client_ci;
- struct i2c_board_info info;
- struct sp2_config sp2_config;
+ struct i2c_adapter *i2c_adapter;
+ struct m88ds3103_platform_data m88ds3103_pdata = {};
struct ts2020_config ts2020_config = {};
- memset(&info, 0, sizeof(struct i2c_board_info));
+ struct sp2_config sp2_config = {};
/* attach demod */
- adap->fe[0] = dvb_attach(m88ds3103_attach,
- &dvbsky_s960c_m88ds3103_config,
- &d->i2c_adap,
- &i2c_adapter);
- if (!adap->fe[0]) {
- dev_err(&d->udev->dev, "dvbsky_s960ci_attach fail.\n");
- ret = -ENODEV;
- goto fail_attach;
- }
+ m88ds3103_pdata.clk = 27000000,
+ m88ds3103_pdata.i2c_wr_max = 33,
+ m88ds3103_pdata.clk_out = 0,
+ m88ds3103_pdata.ts_mode = M88DS3103_TS_CI,
+ m88ds3103_pdata.ts_clk = 10000,
+ m88ds3103_pdata.ts_clk_pol = 1,
+ m88ds3103_pdata.agc = 0x99,
+ m88ds3103_pdata.lnb_hv_pol = 0,
+ m88ds3103_pdata.lnb_en_pol = 1,
+
+ state->i2c_client_demod = dvb_module_probe("m88ds3103", NULL,
+ &d->i2c_adap,
+ 0x68, &m88ds3103_pdata);
+ if (!state->i2c_client_demod)
+ return -ENODEV;
+
+ adap->fe[0] = m88ds3103_pdata.get_dvb_frontend(state->i2c_client_demod);
+ i2c_adapter = m88ds3103_pdata.get_i2c_adapter(state->i2c_client_demod);
/* attach tuner */
ts2020_config.fe = adap->fe[0];
ts2020_config.get_agc_pwm = m88ds3103_get_agc_pwm;
- strlcpy(info.type, "ts2020", I2C_NAME_SIZE);
- info.addr = 0x60;
- info.platform_data = &ts2020_config;
- request_module("ts2020");
- client_tuner = i2c_new_device(i2c_adapter, &info);
- if (client_tuner == NULL || client_tuner->dev.driver == NULL) {
- ret = -ENODEV;
- goto fail_tuner_device;
- }
- if (!try_module_get(client_tuner->dev.driver->owner)) {
- ret = -ENODEV;
- goto fail_tuner_module;
+ state->i2c_client_tuner = dvb_module_probe("ts2020", NULL,
+ i2c_adapter,
+ 0x60, &ts2020_config);
+ if (!state->i2c_client_tuner) {
+ dvb_module_release(state->i2c_client_demod);
+ return -ENODEV;
}
/* attach ci controller */
- memset(&sp2_config, 0, sizeof(sp2_config));
sp2_config.dvb_adap = &adap->dvb_adap;
sp2_config.priv = d;
sp2_config.ci_control = dvbsky_ci_ctrl;
- memset(&info, 0, sizeof(struct i2c_board_info));
- strlcpy(info.type, "sp2", I2C_NAME_SIZE);
- info.addr = 0x40;
- info.platform_data = &sp2_config;
- request_module("sp2");
- client_ci = i2c_new_device(&d->i2c_adap, &info);
- if (client_ci == NULL || client_ci->dev.driver == NULL) {
- ret = -ENODEV;
- goto fail_ci_device;
- }
- if (!try_module_get(client_ci->dev.driver->owner)) {
- ret = -ENODEV;
- goto fail_ci_module;
+ state->i2c_client_ci = dvb_module_probe("sp2", NULL,
+ &d->i2c_adap,
+ 0x40, &sp2_config);
+
+ if (!state->i2c_client_ci) {
+ dvb_module_release(state->i2c_client_tuner);
+ dvb_module_release(state->i2c_client_demod);
+ return -ENODEV;
}
/* delegate signal strength measurement to tuner */
@@ -500,165 +460,92 @@ static int dvbsky_s960c_attach(struct dvb_usb_adapter *adap)
state->fe_set_voltage = adap->fe[0]->ops.set_voltage;
adap->fe[0]->ops.set_voltage = dvbsky_usb_ci_set_voltage;
- state->i2c_client_tuner = client_tuner;
- state->i2c_client_ci = client_ci;
- return ret;
-fail_ci_module:
- i2c_unregister_device(client_ci);
-fail_ci_device:
- module_put(client_tuner->dev.driver->owner);
-fail_tuner_module:
- i2c_unregister_device(client_tuner);
-fail_tuner_device:
- dvb_frontend_detach(adap->fe[0]);
-fail_attach:
- return ret;
+ return 0;
}
static int dvbsky_t680c_attach(struct dvb_usb_adapter *adap)
{
struct dvbsky_state *state = adap_to_priv(adap);
struct dvb_usb_device *d = adap_to_d(adap);
- int ret = 0;
struct i2c_adapter *i2c_adapter;
- struct i2c_client *client_demod, *client_tuner, *client_ci;
- struct i2c_board_info info;
- struct si2168_config si2168_config;
- struct si2157_config si2157_config;
- struct sp2_config sp2_config;
+ struct si2168_config si2168_config = {};
+ struct si2157_config si2157_config = {};
+ struct sp2_config sp2_config = {};
/* attach demod */
- memset(&si2168_config, 0, sizeof(si2168_config));
si2168_config.i2c_adapter = &i2c_adapter;
si2168_config.fe = &adap->fe[0];
si2168_config.ts_mode = SI2168_TS_PARALLEL;
- memset(&info, 0, sizeof(struct i2c_board_info));
- strlcpy(info.type, "si2168", I2C_NAME_SIZE);
- info.addr = 0x64;
- info.platform_data = &si2168_config;
- request_module(info.type);
- client_demod = i2c_new_device(&d->i2c_adap, &info);
- if (client_demod == NULL ||
- client_demod->dev.driver == NULL)
- goto fail_demod_device;
- if (!try_module_get(client_demod->dev.driver->owner))
- goto fail_demod_module;
+ state->i2c_client_demod = dvb_module_probe("si2168", NULL,
+ &d->i2c_adap,
+ 0x64, &si2168_config);
+ if (!state->i2c_client_demod)
+ return -ENODEV;
/* attach tuner */
- memset(&si2157_config, 0, sizeof(si2157_config));
si2157_config.fe = adap->fe[0];
si2157_config.if_port = 1;
- memset(&info, 0, sizeof(struct i2c_board_info));
- strlcpy(info.type, "si2157", I2C_NAME_SIZE);
- info.addr = 0x60;
- info.platform_data = &si2157_config;
- request_module(info.type);
- client_tuner = i2c_new_device(i2c_adapter, &info);
- if (client_tuner == NULL ||
- client_tuner->dev.driver == NULL)
- goto fail_tuner_device;
- if (!try_module_get(client_tuner->dev.driver->owner))
- goto fail_tuner_module;
+ state->i2c_client_tuner = dvb_module_probe("si2157", NULL,
+ i2c_adapter,
+ 0x60, &si2157_config);
+ if (!state->i2c_client_tuner) {
+ dvb_module_release(state->i2c_client_demod);
+ return -ENODEV;
+ }
/* attach ci controller */
- memset(&sp2_config, 0, sizeof(sp2_config));
sp2_config.dvb_adap = &adap->dvb_adap;
sp2_config.priv = d;
sp2_config.ci_control = dvbsky_ci_ctrl;
- memset(&info, 0, sizeof(struct i2c_board_info));
- strlcpy(info.type, "sp2", I2C_NAME_SIZE);
- info.addr = 0x40;
- info.platform_data = &sp2_config;
- request_module(info.type);
- client_ci = i2c_new_device(&d->i2c_adap, &info);
+ state->i2c_client_ci = dvb_module_probe("sp2", NULL,
+ &d->i2c_adap,
+ 0x40, &sp2_config);
- if (client_ci == NULL || client_ci->dev.driver == NULL)
- goto fail_ci_device;
+ if (!state->i2c_client_ci) {
+ dvb_module_release(state->i2c_client_tuner);
+ dvb_module_release(state->i2c_client_demod);
+ return -ENODEV;
+ }
- if (!try_module_get(client_ci->dev.driver->owner))
- goto fail_ci_module;
-
- state->i2c_client_demod = client_demod;
- state->i2c_client_tuner = client_tuner;
- state->i2c_client_ci = client_ci;
- return ret;
-fail_ci_module:
- i2c_unregister_device(client_ci);
-fail_ci_device:
- module_put(client_tuner->dev.driver->owner);
-fail_tuner_module:
- i2c_unregister_device(client_tuner);
-fail_tuner_device:
- module_put(client_demod->dev.driver->owner);
-fail_demod_module:
- i2c_unregister_device(client_demod);
-fail_demod_device:
- ret = -ENODEV;
- return ret;
+ return 0;
}
static int dvbsky_t330_attach(struct dvb_usb_adapter *adap)
{
struct dvbsky_state *state = adap_to_priv(adap);
struct dvb_usb_device *d = adap_to_d(adap);
- int ret = 0;
struct i2c_adapter *i2c_adapter;
- struct i2c_client *client_demod, *client_tuner;
- struct i2c_board_info info;
- struct si2168_config si2168_config;
- struct si2157_config si2157_config;
+ struct si2168_config si2168_config = {};
+ struct si2157_config si2157_config = {};
/* attach demod */
- memset(&si2168_config, 0, sizeof(si2168_config));
si2168_config.i2c_adapter = &i2c_adapter;
si2168_config.fe = &adap->fe[0];
si2168_config.ts_mode = SI2168_TS_PARALLEL;
si2168_config.ts_clock_gapped = true;
- memset(&info, 0, sizeof(struct i2c_board_info));
- strlcpy(info.type, "si2168", I2C_NAME_SIZE);
- info.addr = 0x64;
- info.platform_data = &si2168_config;
- request_module(info.type);
- client_demod = i2c_new_device(&d->i2c_adap, &info);
- if (client_demod == NULL ||
- client_demod->dev.driver == NULL)
- goto fail_demod_device;
- if (!try_module_get(client_demod->dev.driver->owner))
- goto fail_demod_module;
+ state->i2c_client_demod = dvb_module_probe("si2168", NULL,
+ &d->i2c_adap,
+ 0x64, &si2168_config);
+ if (!state->i2c_client_demod)
+ return -ENODEV;
/* attach tuner */
- memset(&si2157_config, 0, sizeof(si2157_config));
si2157_config.fe = adap->fe[0];
si2157_config.if_port = 1;
- memset(&info, 0, sizeof(struct i2c_board_info));
- strlcpy(info.type, "si2157", I2C_NAME_SIZE);
- info.addr = 0x60;
- info.platform_data = &si2157_config;
- request_module(info.type);
- client_tuner = i2c_new_device(i2c_adapter, &info);
- if (client_tuner == NULL ||
- client_tuner->dev.driver == NULL)
- goto fail_tuner_device;
- if (!try_module_get(client_tuner->dev.driver->owner))
- goto fail_tuner_module;
+ state->i2c_client_tuner = dvb_module_probe("si2157", NULL,
+ i2c_adapter,
+ 0x60, &si2157_config);
+ if (!state->i2c_client_tuner) {
+ dvb_module_release(state->i2c_client_demod);
+ return -ENODEV;
+ }
- state->i2c_client_demod = client_demod;
- state->i2c_client_tuner = client_tuner;
- return ret;
-fail_tuner_module:
- i2c_unregister_device(client_tuner);
-fail_tuner_device:
- module_put(client_demod->dev.driver->owner);
-fail_demod_module:
- i2c_unregister_device(client_demod);
-fail_demod_device:
- ret = -ENODEV;
- return ret;
+ return 0;
}
static int dvbsky_mygica_t230c_attach(struct dvb_usb_adapter *adap)
@@ -666,57 +553,34 @@ static int dvbsky_mygica_t230c_attach(struct dvb_usb_adapter *adap)
struct dvbsky_state *state = adap_to_priv(adap);
struct dvb_usb_device *d = adap_to_d(adap);
struct i2c_adapter *i2c_adapter;
- struct i2c_client *client_demod, *client_tuner;
- struct i2c_board_info info;
- struct si2168_config si2168_config;
- struct si2157_config si2157_config;
+ struct si2168_config si2168_config = {};
+ struct si2157_config si2157_config = {};
/* attach demod */
- memset(&si2168_config, 0, sizeof(si2168_config));
si2168_config.i2c_adapter = &i2c_adapter;
si2168_config.fe = &adap->fe[0];
si2168_config.ts_mode = SI2168_TS_PARALLEL;
si2168_config.ts_clock_inv = 1;
- memset(&info, 0, sizeof(struct i2c_board_info));
- strlcpy(info.type, "si2168", sizeof(info.type));
- info.addr = 0x64;
- info.platform_data = &si2168_config;
- request_module("si2168");
- client_demod = i2c_new_device(&d->i2c_adap, &info);
- if (!client_demod || !client_demod->dev.driver)
- goto fail_demod_device;
- if (!try_module_get(client_demod->dev.driver->owner))
- goto fail_demod_module;
+ state->i2c_client_demod = dvb_module_probe("si2168", NULL,
+ &d->i2c_adap,
+ 0x64, &si2168_config);
+ if (!state->i2c_client_demod)
+ return -ENODEV;
/* attach tuner */
- memset(&si2157_config, 0, sizeof(si2157_config));
si2157_config.fe = adap->fe[0];
si2157_config.if_port = 0;
- memset(&info, 0, sizeof(struct i2c_board_info));
- strlcpy(info.type, "si2141", sizeof(info.type));
- info.addr = 0x60;
- info.platform_data = &si2157_config;
- request_module("si2157");
- client_tuner = i2c_new_device(i2c_adapter, &info);
- if (!client_tuner || !client_tuner->dev.driver)
- goto fail_tuner_device;
- if (!try_module_get(client_tuner->dev.driver->owner))
- goto fail_tuner_module;
+ state->i2c_client_tuner = dvb_module_probe("si2157", "si2141",
+ i2c_adapter,
+ 0x60, &si2157_config);
+ if (!state->i2c_client_tuner) {
+ dvb_module_release(state->i2c_client_demod);
+ return -ENODEV;
+ }
- state->i2c_client_demod = client_demod;
- state->i2c_client_tuner = client_tuner;
return 0;
-
-fail_tuner_module:
- i2c_unregister_device(client_tuner);
-fail_tuner_device:
- module_put(client_demod->dev.driver->owner);
-fail_demod_module:
- i2c_unregister_device(client_demod);
-fail_demod_device:
- return -ENODEV;
}
@@ -754,26 +618,10 @@ static int dvbsky_init(struct dvb_usb_device *d)
static void dvbsky_exit(struct dvb_usb_device *d)
{
struct dvbsky_state *state = d_to_priv(d);
- struct i2c_client *client;
- client = state->i2c_client_tuner;
- /* remove I2C tuner */
- if (client) {
- module_put(client->dev.driver->owner);
- i2c_unregister_device(client);
- }
- client = state->i2c_client_demod;
- /* remove I2C demod */
- if (client) {
- module_put(client->dev.driver->owner);
- i2c_unregister_device(client);
- }
- client = state->i2c_client_ci;
- /* remove I2C ci */
- if (client) {
- module_put(client->dev.driver->owner);
- i2c_unregister_device(client);
- }
+ dvb_module_release(state->i2c_client_tuner);
+ dvb_module_release(state->i2c_client_demod);
+ dvb_module_release(state->i2c_client_ci);
}
/* DVB USB Driver stuff */
--
2.14.3
