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path: root/drivers/media/dvb/frontends/tda827x.c
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Diffstat (limited to 'drivers/media/dvb/frontends/tda827x.c')
-rw-r--r--drivers/media/dvb/frontends/tda827x.c476
1 files changed, 476 insertions, 0 deletions
diff --git a/drivers/media/dvb/frontends/tda827x.c b/drivers/media/dvb/frontends/tda827x.c
new file mode 100644
index 00000000000..cff2d1fa409
--- /dev/null
+++ b/drivers/media/dvb/frontends/tda827x.c
@@ -0,0 +1,476 @@
+/*
+ *
+ * (c) 2005 Hartmut Hackmann
+ * (c) 2007 Michael Krufky
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/dvb/frontend.h>
+#include <asm/types.h>
+
+#include "tda827x.h"
+
+static int debug = 0;
+#define dprintk(args...) \
+ do { \
+ if (debug) printk(KERN_DEBUG "tda827x: " args); \
+ } while (0)
+
+struct tda827x_priv {
+ int i2c_addr;
+ struct i2c_adapter *i2c_adap;
+ struct tda827x_config *cfg;
+ u32 frequency;
+ u32 bandwidth;
+};
+
+struct tda827x_data {
+ u32 lomax;
+ u8 spd;
+ u8 bs;
+ u8 bp;
+ u8 cp;
+ u8 gc3;
+ u8 div1p5;
+};
+
+static const struct tda827x_data tda827x_dvbt[] = {
+ { .lomax = 62000000, .spd = 3, .bs = 2, .bp = 0, .cp = 0, .gc3 = 3, .div1p5 = 1},
+ { .lomax = 66000000, .spd = 3, .bs = 3, .bp = 0, .cp = 0, .gc3 = 3, .div1p5 = 1},
+ { .lomax = 76000000, .spd = 3, .bs = 1, .bp = 0, .cp = 0, .gc3 = 3, .div1p5 = 0},
+ { .lomax = 84000000, .spd = 3, .bs = 2, .bp = 0, .cp = 0, .gc3 = 3, .div1p5 = 0},
+ { .lomax = 93000000, .spd = 3, .bs = 2, .bp = 0, .cp = 0, .gc3 = 1, .div1p5 = 0},
+ { .lomax = 98000000, .spd = 3, .bs = 3, .bp = 0, .cp = 0, .gc3 = 1, .div1p5 = 0},
+ { .lomax = 109000000, .spd = 3, .bs = 3, .bp = 1, .cp = 0, .gc3 = 1, .div1p5 = 0},
+ { .lomax = 123000000, .spd = 2, .bs = 2, .bp = 1, .cp = 0, .gc3 = 1, .div1p5 = 1},
+ { .lomax = 133000000, .spd = 2, .bs = 3, .bp = 1, .cp = 0, .gc3 = 1, .div1p5 = 1},
+ { .lomax = 151000000, .spd = 2, .bs = 1, .bp = 1, .cp = 0, .gc3 = 1, .div1p5 = 0},
+ { .lomax = 154000000, .spd = 2, .bs = 2, .bp = 1, .cp = 0, .gc3 = 1, .div1p5 = 0},
+ { .lomax = 181000000, .spd = 2, .bs = 2, .bp = 1, .cp = 0, .gc3 = 0, .div1p5 = 0},
+ { .lomax = 185000000, .spd = 2, .bs = 2, .bp = 2, .cp = 0, .gc3 = 1, .div1p5 = 0},
+ { .lomax = 217000000, .spd = 2, .bs = 3, .bp = 2, .cp = 0, .gc3 = 1, .div1p5 = 0},
+ { .lomax = 244000000, .spd = 1, .bs = 2, .bp = 2, .cp = 0, .gc3 = 1, .div1p5 = 1},
+ { .lomax = 265000000, .spd = 1, .bs = 3, .bp = 2, .cp = 0, .gc3 = 1, .div1p5 = 1},
+ { .lomax = 302000000, .spd = 1, .bs = 1, .bp = 2, .cp = 0, .gc3 = 1, .div1p5 = 0},
+ { .lomax = 324000000, .spd = 1, .bs = 2, .bp = 2, .cp = 0, .gc3 = 1, .div1p5 = 0},
+ { .lomax = 370000000, .spd = 1, .bs = 2, .bp = 3, .cp = 0, .gc3 = 1, .div1p5 = 0},
+ { .lomax = 454000000, .spd = 1, .bs = 3, .bp = 3, .cp = 0, .gc3 = 1, .div1p5 = 0},
+ { .lomax = 493000000, .spd = 0, .bs = 2, .bp = 3, .cp = 0, .gc3 = 1, .div1p5 = 1},
+ { .lomax = 530000000, .spd = 0, .bs = 3, .bp = 3, .cp = 0, .gc3 = 1, .div1p5 = 1},
+ { .lomax = 554000000, .spd = 0, .bs = 1, .bp = 3, .cp = 0, .gc3 = 1, .div1p5 = 0},
+ { .lomax = 604000000, .spd = 0, .bs = 1, .bp = 4, .cp = 0, .gc3 = 0, .div1p5 = 0},
+ { .lomax = 696000000, .spd = 0, .bs = 2, .bp = 4, .cp = 0, .gc3 = 0, .div1p5 = 0},
+ { .lomax = 740000000, .spd = 0, .bs = 2, .bp = 4, .cp = 1, .gc3 = 0, .div1p5 = 0},
+ { .lomax = 820000000, .spd = 0, .bs = 3, .bp = 4, .cp = 0, .gc3 = 0, .div1p5 = 0},
+ { .lomax = 865000000, .spd = 0, .bs = 3, .bp = 4, .cp = 1, .gc3 = 0, .div1p5 = 0},
+ { .lomax = 0, .spd = 0, .bs = 0, .bp = 0, .cp = 0, .gc3 = 0, .div1p5 = 0}
+};
+
+static int tda827xo_set_params(struct dvb_frontend *fe,
+ struct dvb_frontend_parameters *params)
+{
+ struct tda827x_priv *priv = fe->tuner_priv;
+ u8 buf[14];
+
+ struct i2c_msg msg = { .addr = priv->i2c_addr, .flags = 0,
+ .buf = buf, .len = sizeof(buf) };
+ int i, tuner_freq, if_freq;
+ u32 N;
+
+ switch (params->u.ofdm.bandwidth) {
+ case BANDWIDTH_6_MHZ:
+ if_freq = 4000000;
+ break;
+ case BANDWIDTH_7_MHZ:
+ if_freq = 4500000;
+ break;
+ default: /* 8 MHz or Auto */
+ if_freq = 5000000;
+ break;
+ }
+ tuner_freq = params->frequency + if_freq;
+
+ i = 0;
+ while (tda827x_dvbt[i].lomax < tuner_freq) {
+ if(tda827x_dvbt[i + 1].lomax == 0)
+ break;
+ i++;
+ }
+
+ N = ((tuner_freq + 125000) / 250000) << (tda827x_dvbt[i].spd + 2);
+ buf[0] = 0;
+ buf[1] = (N>>8) | 0x40;
+ buf[2] = N & 0xff;
+ buf[3] = 0;
+ buf[4] = 0x52;
+ buf[5] = (tda827x_dvbt[i].spd << 6) + (tda827x_dvbt[i].div1p5 << 5) +
+ (tda827x_dvbt[i].bs << 3) + tda827x_dvbt[i].bp;
+ buf[6] = (tda827x_dvbt[i].gc3 << 4) + 0x8f;
+ buf[7] = 0xbf;
+ buf[8] = 0x2a;
+ buf[9] = 0x05;
+ buf[10] = 0xff;
+ buf[11] = 0x00;
+ buf[12] = 0x00;
+ buf[13] = 0x40;
+
+ msg.len = 14;
+ if (fe->ops.i2c_gate_ctrl)
+ fe->ops.i2c_gate_ctrl(fe, 1);
+ if (i2c_transfer(priv->i2c_adap, &msg, 1) != 1) {
+ printk("%s: could not write to tuner at addr: 0x%02x\n",
+ __FUNCTION__, priv->i2c_addr << 1);
+ return -EIO;
+ }
+ msleep(500);
+ /* correct CP value */
+ buf[0] = 0x30;
+ buf[1] = 0x50 + tda827x_dvbt[i].cp;
+ msg.len = 2;
+
+ if (fe->ops.i2c_gate_ctrl)
+ fe->ops.i2c_gate_ctrl(fe, 1);
+ i2c_transfer(priv->i2c_adap, &msg, 1);
+
+ priv->frequency = tuner_freq - if_freq; // FIXME
+ priv->bandwidth = (fe->ops.info.type == FE_OFDM) ? params->u.ofdm.bandwidth : 0;
+
+ return 0;
+}
+
+static int tda827xo_sleep(struct dvb_frontend *fe)
+{
+ struct tda827x_priv *priv = fe->tuner_priv;
+ static u8 buf[] = { 0x30, 0xd0 };
+ struct i2c_msg msg = { .addr = priv->i2c_addr, .flags = 0,
+ .buf = buf, .len = sizeof(buf) };
+
+ if (fe->ops.i2c_gate_ctrl)
+ fe->ops.i2c_gate_ctrl(fe, 1);
+ i2c_transfer(priv->i2c_adap, &msg, 1);
+
+ if (priv->cfg && priv->cfg->sleep)
+ priv->cfg->sleep(fe);
+
+ return 0;
+}
+
+/* ------------------------------------------------------------------ */
+
+struct tda827xa_data {
+ u32 lomax;
+ u8 svco;
+ u8 spd;
+ u8 scr;
+ u8 sbs;
+ u8 gc3;
+};
+
+static const struct tda827xa_data tda827xa_dvbt[] = {
+ { .lomax = 56875000, .svco = 3, .spd = 4, .scr = 0, .sbs = 0, .gc3 = 1},
+ { .lomax = 67250000, .svco = 0, .spd = 3, .scr = 0, .sbs = 0, .gc3 = 1},
+ { .lomax = 81250000, .svco = 1, .spd = 3, .scr = 0, .sbs = 0, .gc3 = 1},
+ { .lomax = 97500000, .svco = 2, .spd = 3, .scr = 0, .sbs = 0, .gc3 = 1},
+ { .lomax = 113750000, .svco = 3, .spd = 3, .scr = 0, .sbs = 1, .gc3 = 1},
+ { .lomax = 134500000, .svco = 0, .spd = 2, .scr = 0, .sbs = 1, .gc3 = 1},
+ { .lomax = 154000000, .svco = 1, .spd = 2, .scr = 0, .sbs = 1, .gc3 = 1},
+ { .lomax = 162500000, .svco = 1, .spd = 2, .scr = 0, .sbs = 1, .gc3 = 1},
+ { .lomax = 183000000, .svco = 2, .spd = 2, .scr = 0, .sbs = 1, .gc3 = 1},
+ { .lomax = 195000000, .svco = 2, .spd = 2, .scr = 0, .sbs = 2, .gc3 = 1},
+ { .lomax = 227500000, .svco = 3, .spd = 2, .scr = 0, .sbs = 2, .gc3 = 1},
+ { .lomax = 269000000, .svco = 0, .spd = 1, .scr = 0, .sbs = 2, .gc3 = 1},
+ { .lomax = 290000000, .svco = 1, .spd = 1, .scr = 0, .sbs = 2, .gc3 = 1},
+ { .lomax = 325000000, .svco = 1, .spd = 1, .scr = 0, .sbs = 3, .gc3 = 1},
+ { .lomax = 390000000, .svco = 2, .spd = 1, .scr = 0, .sbs = 3, .gc3 = 1},
+ { .lomax = 455000000, .svco = 3, .spd = 1, .scr = 0, .sbs = 3, .gc3 = 1},
+ { .lomax = 520000000, .svco = 0, .spd = 0, .scr = 0, .sbs = 3, .gc3 = 1},
+ { .lomax = 538000000, .svco = 0, .spd = 0, .scr = 1, .sbs = 3, .gc3 = 1},
+ { .lomax = 550000000, .svco = 1, .spd = 0, .scr = 0, .sbs = 3, .gc3 = 1},
+ { .lomax = 620000000, .svco = 1, .spd = 0, .scr = 0, .sbs = 4, .gc3 = 0},
+ { .lomax = 650000000, .svco = 1, .spd = 0, .scr = 1, .sbs = 4, .gc3 = 0},
+ { .lomax = 700000000, .svco = 2, .spd = 0, .scr = 0, .sbs = 4, .gc3 = 0},
+ { .lomax = 780000000, .svco = 2, .spd = 0, .scr = 1, .sbs = 4, .gc3 = 0},
+ { .lomax = 820000000, .svco = 3, .spd = 0, .scr = 0, .sbs = 4, .gc3 = 0},
+ { .lomax = 870000000, .svco = 3, .spd = 0, .scr = 1, .sbs = 4, .gc3 = 0},
+ { .lomax = 911000000, .svco = 3, .spd = 0, .scr = 2, .sbs = 4, .gc3 = 0},
+ { .lomax = 0, .svco = 0, .spd = 0, .scr = 0, .sbs = 0, .gc3 = 0}
+};
+
+static int tda827xa_set_params(struct dvb_frontend *fe,
+ struct dvb_frontend_parameters *params)
+{
+ struct tda827x_priv *priv = fe->tuner_priv;
+ u8 buf[10];
+
+ struct i2c_msg msg = { .addr = priv->i2c_addr, .flags = 0,
+ .buf = buf, .len = sizeof(buf) };
+
+ int i, tuner_freq, if_freq;
+ u32 N;
+
+ if (priv->cfg && priv->cfg->lna_gain)
+ priv->cfg->lna_gain(fe, 1);
+ msleep(20);
+
+ switch (params->u.ofdm.bandwidth) {
+ case BANDWIDTH_6_MHZ:
+ if_freq = 4000000;
+ break;
+ case BANDWIDTH_7_MHZ:
+ if_freq = 4500000;
+ break;
+ default: /* 8 MHz or Auto */
+ if_freq = 5000000;
+ break;
+ }
+ tuner_freq = params->frequency + if_freq;
+
+ i = 0;
+ while (tda827xa_dvbt[i].lomax < tuner_freq) {
+ if(tda827xa_dvbt[i + 1].lomax == 0)
+ break;
+ i++;
+ }
+
+ N = ((tuner_freq + 31250) / 62500) << tda827xa_dvbt[i].spd;
+ buf[0] = 0; // subaddress
+ buf[1] = N >> 8;
+ buf[2] = N & 0xff;
+ buf[3] = 0;
+ buf[4] = 0x16;
+ buf[5] = (tda827xa_dvbt[i].spd << 5) + (tda827xa_dvbt[i].svco << 3) +
+ tda827xa_dvbt[i].sbs;
+ buf[6] = 0x4b + (tda827xa_dvbt[i].gc3 << 4);
+ buf[7] = 0x1c;
+ buf[8] = 0x06;
+ buf[9] = 0x24;
+ buf[10] = 0x00;
+ msg.len = 11;
+ if (fe->ops.i2c_gate_ctrl)
+ fe->ops.i2c_gate_ctrl(fe, 1);
+ if (i2c_transfer(priv->i2c_adap, &msg, 1) != 1) {
+ printk("%s: could not write to tuner at addr: 0x%02x\n",
+ __FUNCTION__, priv->i2c_addr << 1);
+ return -EIO;
+ }
+ buf[0] = 0x90;
+ buf[1] = 0xff;
+ buf[2] = 0x60;
+ buf[3] = 0x00;
+ buf[4] = 0x59; // lpsel, for 6MHz + 2
+ msg.len = 5;
+ if (fe->ops.i2c_gate_ctrl)
+ fe->ops.i2c_gate_ctrl(fe, 1);
+ i2c_transfer(priv->i2c_adap, &msg, 1);
+
+ buf[0] = 0xa0;
+ buf[1] = 0x40;
+ msg.len = 2;
+ if (fe->ops.i2c_gate_ctrl)
+ fe->ops.i2c_gate_ctrl(fe, 1);
+ i2c_transfer(priv->i2c_adap, &msg, 1);
+
+ msleep(11);
+ msg.flags = I2C_M_RD;
+ if (fe->ops.i2c_gate_ctrl)
+ fe->ops.i2c_gate_ctrl(fe, 1);
+ i2c_transfer(priv->i2c_adap, &msg, 1);
+ msg.flags = 0;
+
+ buf[1] >>= 4;
+ dprintk("tda8275a AGC2 gain is: %d\n", buf[1]);
+ if ((buf[1]) < 2) {
+ if (priv->cfg && priv->cfg->lna_gain)
+ priv->cfg->lna_gain(fe, 0);
+ buf[0] = 0x60;
+ buf[1] = 0x0c;
+ if (fe->ops.i2c_gate_ctrl)
+ fe->ops.i2c_gate_ctrl(fe, 1);
+ i2c_transfer(priv->i2c_adap, &msg, 1);
+ }
+
+ buf[0] = 0xc0;
+ buf[1] = 0x99; // lpsel, for 6MHz + 2
+ if (fe->ops.i2c_gate_ctrl)
+ fe->ops.i2c_gate_ctrl(fe, 1);
+ i2c_transfer(priv->i2c_adap, &msg, 1);
+
+ buf[0] = 0x60;
+ buf[1] = 0x3c;
+ if (fe->ops.i2c_gate_ctrl)
+ fe->ops.i2c_gate_ctrl(fe, 1);
+ i2c_transfer(priv->i2c_adap, &msg, 1);
+
+ /* correct CP value */
+ buf[0] = 0x30;
+ buf[1] = 0x10 + tda827xa_dvbt[i].scr;
+ if (fe->ops.i2c_gate_ctrl)
+ fe->ops.i2c_gate_ctrl(fe, 1);
+ i2c_transfer(priv->i2c_adap, &msg, 1);
+
+ msleep(163);
+ buf[0] = 0xc0;
+ buf[1] = 0x39; // lpsel, for 6MHz + 2
+ if (fe->ops.i2c_gate_ctrl)
+ fe->ops.i2c_gate_ctrl(fe, 1);
+ i2c_transfer(priv->i2c_adap, &msg, 1);
+
+ msleep(3);
+ /* freeze AGC1 */
+ buf[0] = 0x50;
+ buf[1] = 0x4f + (tda827xa_dvbt[i].gc3 << 4);
+ if (fe->ops.i2c_gate_ctrl)
+ fe->ops.i2c_gate_ctrl(fe, 1);
+ i2c_transfer(priv->i2c_adap, &msg, 1);
+
+ priv->frequency = tuner_freq - if_freq; // FIXME
+ priv->bandwidth = (fe->ops.info.type == FE_OFDM) ? params->u.ofdm.bandwidth : 0;
+
+ return 0;
+}
+
+static int tda827xa_sleep(struct dvb_frontend *fe)
+{
+ struct tda827x_priv *priv = fe->tuner_priv;
+ static u8 buf[] = { 0x30, 0x90 };
+ struct i2c_msg msg = { .addr = priv->i2c_addr, .flags = 0,
+ .buf = buf, .len = sizeof(buf) };
+
+ if (fe->ops.i2c_gate_ctrl)
+ fe->ops.i2c_gate_ctrl(fe, 1);
+
+ i2c_transfer(priv->i2c_adap, &msg, 1);
+
+ if (fe->ops.i2c_gate_ctrl)
+ fe->ops.i2c_gate_ctrl(fe, 0);
+
+ if (priv->cfg && priv->cfg->sleep)
+ priv->cfg->sleep(fe);
+
+ return 0;
+}
+
+static int tda827x_release(struct dvb_frontend *fe)
+{
+ kfree(fe->tuner_priv);
+ fe->tuner_priv = NULL;
+ return 0;
+}
+
+static int tda827x_get_frequency(struct dvb_frontend *fe, u32 *frequency)
+{
+ struct tda827x_priv *priv = fe->tuner_priv;
+ *frequency = priv->frequency;
+ return 0;
+}
+
+static int tda827x_get_bandwidth(struct dvb_frontend *fe, u32 *bandwidth)
+{
+ struct tda827x_priv *priv = fe->tuner_priv;
+ *bandwidth = priv->bandwidth;
+ return 0;
+}
+
+static int tda827x_init(struct dvb_frontend *fe)
+{
+ struct tda827x_priv *priv = fe->tuner_priv;
+
+ if (priv->cfg && priv->cfg->init)
+ priv->cfg->init(fe);
+
+ return 0;
+}
+
+
+static struct dvb_tuner_ops tda827xo_tuner_ops = {
+ .info = {
+ .name = "Philips TDA827X",
+ },
+ .release = tda827x_release,
+ .init = tda827x_init,
+ .sleep = tda827xo_sleep,
+ .set_params = tda827xo_set_params,
+ .get_frequency = tda827x_get_frequency,
+ .get_bandwidth = tda827x_get_bandwidth,
+};
+
+static struct dvb_tuner_ops tda827xa_tuner_ops = {
+ .info = {
+ .name = "Philips TDA827XA",
+ },
+ .release = tda827x_release,
+ .init = tda827x_init,
+ .sleep = tda827xa_sleep,
+ .set_params = tda827xa_set_params,
+ .get_frequency = tda827x_get_frequency,
+ .get_bandwidth = tda827x_get_bandwidth,
+};
+
+struct dvb_frontend *tda827x_attach(struct dvb_frontend *fe, int addr,
+ struct i2c_adapter *i2c,
+ struct tda827x_config *cfg)
+{
+ struct tda827x_priv *priv = NULL;
+ u8 data;
+ struct i2c_msg msg = { .addr = addr, .flags = I2C_M_RD,
+ .buf = &data, .len = 1 };
+ dprintk("%s:\n", __FUNCTION__);
+
+ if (fe->ops.i2c_gate_ctrl)
+ fe->ops.i2c_gate_ctrl(fe, 1);
+
+ if (i2c_transfer(i2c, &msg, 1) != 1) {
+ printk("%s: could not read from tuner at addr: 0x%02x\n",
+ __FUNCTION__, addr << 1);
+ return NULL;
+ }
+
+ priv = kzalloc(sizeof(struct tda827x_priv), GFP_KERNEL);
+ if (priv == NULL)
+ return NULL;
+
+ priv->i2c_addr = addr;
+ priv->i2c_adap = i2c;
+ priv->cfg = cfg;
+ if ((data & 0x3c) == 0) {
+ dprintk("tda827x tuner found\n");
+ memcpy(&fe->ops.tuner_ops, &tda827xo_tuner_ops, sizeof(struct dvb_tuner_ops));
+ } else {
+ dprintk("tda827xa tuner found\n");
+ memcpy(&fe->ops.tuner_ops, &tda827xa_tuner_ops, sizeof(struct dvb_tuner_ops));
+ }
+ fe->tuner_priv = priv;
+
+ return fe;
+}
+EXPORT_SYMBOL(tda827x_attach);
+
+module_param(debug, int, 0644);
+MODULE_PARM_DESC(debug, "Turn on/off frontend debugging (default:off).");
+
+MODULE_DESCRIPTION("DVB TDA827x driver");
+MODULE_AUTHOR("Hartmut Hackmann");
+MODULE_AUTHOR("Michael Krufky");
+MODULE_LICENSE("GPL");
+
+/*
+ * Overrides for Emacs so that we follow Linus's tabbing style.
+ * ---------------------------------------------------------------------------
+ * Local variables:
+ * c-basic-offset: 8
+ * End:
+ */
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-26 10:10:16 +0000