diff options
author | Hartmut Hackmann <hartmut.hackmann@t-online.de> | 2007-04-27 12:31:12 -0300 |
---|---|---|
committer | Mauro Carvalho Chehab <mchehab@infradead.org> | 2007-04-27 15:43:32 -0300 |
commit | 58ef4f924cf2824ae198b1fec3eea1e4059a021c (patch) | |
tree | dc10d767ffc30857a183dacbc4d50a6deacee442 /drivers/media/video/tda8290.c | |
parent | de956c1e0f89413a3837b642d592e2dff3e3eb78 (diff) |
V4L/DVB (5314): Added support for tda827x tuners with preamlifiers
This patch contains
- new tuning code for the tda827xa silicon tuner.
- controls the preamplifier of some boards with this tuner.
- support for the Philips Tiger S hybrid DVB-T reference design.
- reworked the saa7134-dvb modulue to get rid of most of the
small board specific functions.
Signed-off-by: Hartmut Hackmann <hartmut.hackmann@t-online.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Diffstat (limited to 'drivers/media/video/tda8290.c')
-rw-r--r-- | drivers/media/video/tda8290.c | 136 |
1 files changed, 98 insertions, 38 deletions
diff --git a/drivers/media/video/tda8290.c b/drivers/media/video/tda8290.c index 027c8a074df..e6c3e616719 100644 --- a/drivers/media/video/tda8290.c +++ b/drivers/media/video/tda8290.c @@ -192,14 +192,52 @@ static struct tda827xa_data tda827xa_analog[] = { { .lomax = 0, .svco = 0, .spd = 0, .scr = 0, .sbs = 0, .gc3 = 0} /* End */ }; +static void tda827xa_lna_gain(struct i2c_client *c, int high) +{ + struct tuner *t = i2c_get_clientdata(c); + unsigned char buf[] = {0x22, 0x01}; + int arg; + struct i2c_msg msg = {.addr = c->addr, .flags = 0, .buf = buf, .len = sizeof(buf)}; + if (t->config) { + if (high) + tuner_dbg("setting LNA to high gain\n"); + else + tuner_dbg("setting LNA to low gain\n"); + } + switch (t->config) { + case 0: /* no LNA */ + break; + case 1: /* switch is GPIO 0 of tda8290 */ + case 2: + /* turn Vsync on */ + if (t->std & V4L2_STD_MN) + arg = 5; + else + arg = 4; + if (t->gpio_func) + t->gpio_func(c->adapter->algo_data, 22, 5); + buf[1] = high ? 0 : 1; + if (t->config == 2) + buf[1] = high ? 1 : 0; + i2c_transfer(c->adapter, &msg, 1); + break; + case 3: /* switch with GPIO of saa713x */ + if (t->gpio_func) + t->gpio_func(c->adapter->algo_data, 22, high); + break; + } +} + static void tda827xa_tune(struct i2c_client *c, u16 ifc, unsigned int freq) { - unsigned char tuner_reg[14]; - unsigned char reg2[2]; + unsigned char tuner_reg[11]; u32 N; int i; struct tuner *t = i2c_get_clientdata(c); - struct i2c_msg msg = {.addr = t->tda827x_addr, .flags = 0}; + struct i2c_msg msg = {.addr = t->tda827x_addr, .flags = 0, .buf = tuner_reg}; + + tda827xa_lna_gain( c, 1); + msleep(10); if (t->mode == V4L2_TUNER_RADIO) freq = freq / 1000; @@ -222,48 +260,58 @@ static void tda827xa_tune(struct i2c_client *c, u16 ifc, unsigned int freq) tuner_reg[5] = (tda827xa_analog[i].spd << 5) + (tda827xa_analog[i].svco << 3) + tda827xa_analog[i].sbs; tuner_reg[6] = 0x8b + (tda827xa_analog[i].gc3 << 4); - tuner_reg[7] = 0x0c; + tuner_reg[7] = 0x1c; tuner_reg[8] = 4; tuner_reg[9] = 0x20; - tuner_reg[10] = 0xff; - tuner_reg[11] = 0xe0; - tuner_reg[12] = 0; - tuner_reg[13] = 0x39 + (t->tda827x_lpsel << 1); + tuner_reg[10] = 0x00; + msg.len = 11; + i2c_transfer(c->adapter, &msg, 1); - msg.buf = tuner_reg; - msg.len = 14; + tuner_reg[0] = 0x90; + tuner_reg[1] = 0xff; + tuner_reg[2] = 0xe0; + tuner_reg[3] = 0; + tuner_reg[4] = 0x99 + (t->tda827x_lpsel << 1); + msg.len = 5; i2c_transfer(c->adapter, &msg, 1); - msg.buf= reg2; + tuner_reg[0] = 0xa0; + tuner_reg[1] = 0xc0; msg.len = 2; - reg2[0] = 0x60; - reg2[1] = 0x3c; i2c_transfer(c->adapter, &msg, 1); - reg2[0] = 0xa0; - reg2[1] = 0xc0; + tuner_reg[0] = 0x30; + tuner_reg[1] = 0x10 + tda827xa_analog[i].scr; i2c_transfer(c->adapter, &msg, 1); - msleep(2); - reg2[0] = 0x30; - reg2[1] = 0x10 + tda827xa_analog[i].scr; + msg.flags = I2C_M_RD; + i2c_transfer(c->adapter, &msg, 1); + msg.flags = 0; + tuner_reg[1] >>= 4; + tuner_dbg("AGC2 gain is: %d\n", tuner_reg[1]); + if (tuner_reg[1] < 1) + tda827xa_lna_gain( c, 0); + + msleep(100); + tuner_reg[0] = 0x60; + tuner_reg[1] = 0x3c; i2c_transfer(c->adapter, &msg, 1); - msleep(550); - reg2[0] = 0x50; - reg2[1] = 0x8f + (tda827xa_analog[i].gc3 << 4); + msleep(163); + tuner_reg[0] = 0x50; + tuner_reg[1] = 0x8f + (tda827xa_analog[i].gc3 << 4); i2c_transfer(c->adapter, &msg, 1); - reg2[0] = 0x80; - reg2[1] = 0x28; + tuner_reg[0] = 0x80; + tuner_reg[1] = 0x28; i2c_transfer(c->adapter, &msg, 1); - reg2[0] = 0xb0; - reg2[1] = 0x01; + tuner_reg[0] = 0xb0; + tuner_reg[1] = 0x01; i2c_transfer(c->adapter, &msg, 1); - reg2[0] = 0xc0; - reg2[1] = 0x19 + (t->tda827x_lpsel << 1); + tuner_reg[0] = 0xc0; + tuner_reg[1] = 0x19 + (t->tda827x_lpsel << 1); i2c_transfer(c->adapter, &msg, 1); } @@ -319,7 +367,9 @@ static int tda8290_tune(struct i2c_client *c, u16 ifc, unsigned int freq) unsigned char addr_pll_stat = 0x1b; unsigned char adc_sat, agc_stat, pll_stat; + int i; + tuner_dbg("tda827xa config is 0x%02x\n", t->config); i2c_master_send(c, easy_mode, 2); i2c_master_send(c, agc_out_on, 2); i2c_master_send(c, soft_reset, 2); @@ -340,17 +390,22 @@ static int tda8290_tune(struct i2c_client *c, u16 ifc, unsigned int freq) tda827xa_tune(c, ifc, freq); else tda827x_tune(c, ifc, freq); + for (i = 0; i < 3; i++) { + i2c_master_send(c, &addr_pll_stat, 1); + i2c_master_recv(c, &pll_stat, 1); + if (pll_stat & 0x80) { + i2c_master_send(c, &addr_adc_sat, 1); + i2c_master_recv(c, &adc_sat, 1); + i2c_master_send(c, &addr_agc_stat, 1); + i2c_master_recv(c, &agc_stat, 1); + tuner_dbg("tda8290 is locked, AGC: %d\n", agc_stat); + break; + } else { + tuner_dbg("tda8290 not locked, no signal?\n"); + msleep(100); + } + } /* adjust headroom resp. gain */ - i2c_master_send(c, &addr_adc_sat, 1); - i2c_master_recv(c, &adc_sat, 1); - i2c_master_send(c, &addr_agc_stat, 1); - i2c_master_recv(c, &agc_stat, 1); - i2c_master_send(c, &addr_pll_stat, 1); - i2c_master_recv(c, &pll_stat, 1); - if (pll_stat & 0x80) - tuner_dbg("tda8290 is locked, AGC: %d\n", agc_stat); - else - tuner_dbg("tda8290 not locked, no signal?\n"); if ((agc_stat > 115) || (!(pll_stat & 0x80) && (adc_sat < 20))) { tuner_dbg("adjust gain, step 1. Agc: %d, ADC stat: %d, lock: %d\n", agc_stat, adc_sat, pll_stat & 0x80); @@ -487,11 +542,16 @@ static void standby(struct i2c_client *c) static void tda8290_init_if(struct i2c_client *c) { + struct tuner *t = i2c_get_clientdata(c); unsigned char set_VS[] = { 0x30, 0x6F }; + unsigned char set_GP00_CF[] = { 0x20, 0x01 }; unsigned char set_GP01_CF[] = { 0x20, 0x0B }; + if ((t->config == 1) || (t->config == 2)) + i2c_master_send(c, set_GP00_CF, 2); + else + i2c_master_send(c, set_GP01_CF, 2); i2c_master_send(c, set_VS, 2); - i2c_master_send(c, set_GP01_CF, 2); } static void tda8290_init_tuner(struct i2c_client *c) |