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[media] saa7134: Kworld SBTVD: make both analog and digital to work

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There are some weird bugs at tda8290/tda18271 initialization, as it
insits do do analog initialization during DVB frontend attach:

DVB: registering new adapter (saa7133[0])
DVB: registering adapter 0 frontend 0 (Fujitsu mb86A20s)...
mb86a20s: mb86a20s_initfe
tda18271_write_regs: [2-0060|M] ERROR: idx = 0x5, len = 1, i2c_transfer returned: -5
tda18271_init: [2-0060|M] error -5 on line 830
tda18271_tune: [2-0060|M] error -5 on line 908
tda18271_write_regs
tda18271_write_regs: [2-0060|M] ERROR: idx = 0x5, len = 1, i2c_transfer returned: -5
tda18271c2_rf_tracking_filters_correction: [2-0060|M] error -5 on line 265
tda18271_write_regs
tda18271_write_regs: [2-0060|M] ERROR: idx = 0x25, len = 1, i2c_transfer returned: -5
tda18271_channel_configuration: [2-0060|M] error -5 on line 119
tda18271_set_analog_params: [2-0060|M] error -5 on line 1045
tda18271_set_analog_params: [2-0060|M] error -5 on line 1045
tda829x 2-004b: tda8295 not locked, no signal?
tda829x 2-004b: tda8295_i2c_bridge: disable i2c gate
tda829x 2-004b: tda8295 not locked, no signal?
tda829x 2-004b: tda8295_i2c_bridge: disable i2c gate
mb86a20s_i2c_writereg: writereg error (rc == -5, reg == 0x29, data == 0x33)
mb86a20s: Init failed. Will try again later

The problem is that mb86a20s is only visible if the analog part is disabled.

However, due to a trick at mb86a20s, it will later initialize properly:

mb86a20s: mb86a20s_initfe: Initialization succeded.

This is hacky and ugly. However, I coldn't find any easy way to fix it.
A proper fix would be to have a resource locking schema, used by both
V4L and DVB parts that would block access to analog registers while
digital registers are in use, but this will probably put tda829x into
a dead lock.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Mauro Carvalho Chehab 2011-01-14 12:03:03 -03:00
parent 6a58bc0f50
commit ecb71d262b
3 changed files with 16 additions and 17 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/media/common/tuners/tda8290.c
View File

@ -232,6 +232,7 @@ static void tda8290_set_params(struct dvb_frontend *fe,
tuner_i2c_xfer_send(&priv->i2c_props, pll_bw_nom, 2);
}
tda8290_i2c_bridge(fe, 1);
if (fe->ops.tuner_ops.set_analog_params)

16
drivers/media/video/saa7134/saa7134-cards.c
View File

@ -5179,11 +5179,7 @@ struct saa7134_board saa7134_boards[] = {
[SAA7134_BOARD_KWORLD_PCI_SBTVD_FULLSEG] = {
.name = "Kworld PCI SBTVD/ISDB-T Full-Seg Hybrid",
.audio_clock = 0x00187de7,
#if 0
.tuner_type = TUNER_PHILIPS_TDA8290,
#else
.tuner_type = UNSET,
#endif
.tuner_addr = ADDR_UNSET,
.radio_type = UNSET,
.radio_addr = ADDR_UNSET,
@ -6926,10 +6922,17 @@ static inline int saa7134_kworld_sbtvd_toggle_agc(struct saa7134_dev *dev,
/* toggle AGC switch through GPIO 27 */
switch (mode) {
case TDA18271_ANALOG:
saa7134_set_gpio(dev, 27, 0);
saa_writel(SAA7134_GPIO_GPMODE0 >> 2, 0x4000);
saa_writel(SAA7134_GPIO_GPSTATUS0 >> 2, 0x4000);
msleep(20);
break;
case TDA18271_DIGITAL:
saa7134_set_gpio(dev, 27, 1);
saa_writel(SAA7134_GPIO_GPMODE0 >> 2, 0x14000);
saa_writel(SAA7134_GPIO_GPSTATUS0 >> 2, 0x14000);
msleep(20);
saa_writel(SAA7134_GPIO_GPMODE0 >> 2, 0x54000);
saa_writel(SAA7134_GPIO_GPSTATUS0 >> 2, 0x54000);
msleep(30);
break;
default:
return -EINVAL;
@ -6987,6 +6990,7 @@ static int saa7134_tda8290_callback(struct saa7134_dev *dev,
int saa7134_tuner_callback(void *priv, int component, int command, int arg)
{
struct saa7134_dev *dev = priv;
if (dev != NULL) {
switch (dev->tuner_type) {
case TUNER_PHILIPS_TDA8290:

16
drivers/media/video/saa7134/saa7134-dvb.c
View File

@ -237,6 +237,8 @@ static struct tda18271_std_map mb86a20s_tda18271_std_map = {
static struct tda18271_config kworld_tda18271_config = {
.std_map = &mb86a20s_tda18271_std_map,
.gate = TDA18271_GATE_DIGITAL,
.config = 3, /* Use tuner callback for AGC */
};
static const struct mb86a20s_config kworld_mb86a20s_config = {
@ -1654,24 +1656,16 @@ static int dvb_init(struct saa7134_dev *dev)
}
break;
case SAA7134_BOARD_KWORLD_PCI_SBTVD_FULLSEG:
saa_writel(SAA7134_GPIO_GPMODE0 >> 2, 0x14000);
saa_writel(SAA7134_GPIO_GPSTATUS0 >> 2, 0x14000);
msleep(20);
saa_writel(SAA7134_GPIO_GPMODE0 >> 2, 0x54000);
saa_writel(SAA7134_GPIO_GPSTATUS0 >> 2, 0x54000);
msleep(20);
/* Switch to digital mode */
saa7134_tuner_callback(dev, 0,
TDA18271_CALLBACK_CMD_AGC_ENABLE, 1);
fe0->dvb.frontend = dvb_attach(mb86a20s_attach,
&kworld_mb86a20s_config,
&dev->i2c_adap);
if (fe0->dvb.frontend != NULL) {
#if 0
dvb_attach(tda829x_attach, fe0->dvb.frontend,
&dev->i2c_adap, 0x4b,
&tda829x_no_probe);
#else
dvb_attach(tda829x_attach, fe0->dvb.frontend,
&dev->i2c_adap, 0x4b, NULL);
#endif
dvb_attach(tda18271_attach, fe0->dvb.frontend,
0x60, &dev->i2c_adap,
&kworld_tda18271_config);