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>
diff --git a/drivers/media/video/tda8290.c b/drivers/media/video/tda8290.c
index 027c8a0..e6c3e61 100644
--- a/drivers/media/video/tda8290.c
+++ b/drivers/media/video/tda8290.c
@@ -192,14 +192,52 @@
{ .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 @@
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);
-
- msg.buf = tuner_reg;
- msg.len = 14;
+ tuner_reg[10] = 0x00;
+ msg.len = 11;
i2c_transfer(c->adapter, &msg, 1);
- msg.buf= reg2;
+ 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);
+
+ 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 @@
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 @@
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 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)