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[media] stb6100: get rid of get_state()/set_state()

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It is tricky to get rid of those ops here, as the stv0299 driver
wants to set frequency in separate from setting the bandwidth.

So, we use a small trick: we temporarely fill the cache with
0 for either frequency or bandwidth and add some logic at
set_params to only change the property(ies) that aren't zero.

Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This commit is contained in:
Mauro Carvalho Chehab
2015-11-11 18:42:00 -02:00
parent b2d3afcfbd
commit 65f0f686de
3 changed files with 54 additions and 72 deletions
Download Patch File Download Diff File Expand all files Collapse all files

43
drivers/media/dvb-frontends/stb6100_proc.h
View File

@@ -17,27 +17,27 @@
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <linux/dvb/frontend.h>
#include "dvb_frontend.h"
static int stb6100_get_freq(struct dvb_frontend *fe, u32 *frequency)
{
struct dvb_frontend_ops *frontend_ops = &fe->ops;
struct dvb_tuner_ops *tuner_ops = &frontend_ops->tuner_ops;
struct tuner_state state;
int err = 0;
if (tuner_ops->get_state) {
if (tuner_ops->get_frequency) {
if (frontend_ops->i2c_gate_ctrl)
frontend_ops->i2c_gate_ctrl(fe, 1);
err = tuner_ops->get_state(fe, DVBFE_TUNER_FREQUENCY, &state);
err = tuner_ops->get_frequency(fe, frequency);
if (err < 0) {
printk(KERN_ERR "%s: Invalid parameter\n", __func__);
printk("%s: Invalid parameter\n", __func__);
return err;
}
if (frontend_ops->i2c_gate_ctrl)
frontend_ops->i2c_gate_ctrl(fe, 0);
*frequency = state.frequency;
}
return 0;
@@ -47,18 +47,21 @@ static int stb6100_set_freq(struct dvb_frontend *fe, u32 frequency)
{
struct dvb_frontend_ops *frontend_ops = &fe->ops;
struct dvb_tuner_ops *tuner_ops = &frontend_ops->tuner_ops;
struct tuner_state state;
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
u32 bw = c->bandwidth_hz;
int err = 0;
state.frequency = frequency;
c->frequency = frequency;
c->bandwidth_hz = 0; /* Don't adjust the bandwidth */
if (tuner_ops->set_state) {
if (tuner_ops->set_params) {
if (frontend_ops->i2c_gate_ctrl)
frontend_ops->i2c_gate_ctrl(fe, 1);
err = tuner_ops->set_state(fe, DVBFE_TUNER_FREQUENCY, &state);
err = tuner_ops->set_params(fe);
c->bandwidth_hz = bw;
if (err < 0) {
printk(KERN_ERR "%s: Invalid parameter\n", __func__);
printk("%s: Invalid parameter\n", __func__);
return err;
}
@@ -74,14 +77,13 @@ static int stb6100_get_bandw(struct dvb_frontend *fe, u32 *bandwidth)
{
struct dvb_frontend_ops *frontend_ops = &fe->ops;
struct dvb_tuner_ops *tuner_ops = &frontend_ops->tuner_ops;
struct tuner_state state;
int err = 0;
if (tuner_ops->get_state) {
if (tuner_ops->get_bandwidth) {
if (frontend_ops->i2c_gate_ctrl)
frontend_ops->i2c_gate_ctrl(fe, 1);
err = tuner_ops->get_state(fe, DVBFE_TUNER_BANDWIDTH, &state);
err = tuner_ops->get_bandwidth(fe, bandwidth);
if (err < 0) {
printk(KERN_ERR "%s: Invalid parameter\n", __func__);
return err;
@@ -89,8 +91,6 @@ static int stb6100_get_bandw(struct dvb_frontend *fe, u32 *bandwidth)
if (frontend_ops->i2c_gate_ctrl)
frontend_ops->i2c_gate_ctrl(fe, 0);
*bandwidth = state.bandwidth;
}
return 0;
@@ -100,16 +100,19 @@ static int stb6100_set_bandw(struct dvb_frontend *fe, u32 bandwidth)
{
struct dvb_frontend_ops *frontend_ops = &fe->ops;
struct dvb_tuner_ops *tuner_ops = &frontend_ops->tuner_ops;
struct tuner_state state;
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
u32 freq = c->frequency;
int err = 0;
state.bandwidth = bandwidth;
c->bandwidth_hz = bandwidth;
c->frequency = 0; /* Don't adjust the frequency */
if (tuner_ops->set_state) {
if (tuner_ops->set_params) {
if (frontend_ops->i2c_gate_ctrl)
frontend_ops->i2c_gate_ctrl(fe, 1);
err = tuner_ops->set_state(fe, DVBFE_TUNER_BANDWIDTH, &state);
err = tuner_ops->set_params(fe);
c->frequency = freq;
if (err < 0) {
printk(KERN_ERR "%s: Invalid parameter\n", __func__);
return err;