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path: root/drivers/media/common/tuners/qt1010.c
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Diffstat (limited to 'drivers/media/common/tuners/qt1010.c')
-rw-r--r--drivers/media/common/tuners/qt1010.c485
1 files changed, 485 insertions, 0 deletions
diff --git a/drivers/media/common/tuners/qt1010.c b/drivers/media/common/tuners/qt1010.c
new file mode 100644
index 000000000000..825aa1412e6f
--- /dev/null
+++ b/drivers/media/common/tuners/qt1010.c
@@ -0,0 +1,485 @@
+/*
+ * Driver for Quantek QT1010 silicon tuner
+ *
+ * Copyright (C) 2006 Antti Palosaari <crope@iki.fi>
+ * Aapo Tahkola <aet@rasterburn.org>
+ *
+ * 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 "qt1010.h"
+#include "qt1010_priv.h"
+
+static int debug;
+module_param(debug, int, 0644);
+MODULE_PARM_DESC(debug, "Turn on/off debugging (default:off).");
+
+#define dprintk(args...) \
+ do { \
+ if (debug) printk(KERN_DEBUG "QT1010: " args); \
+ } while (0)
+
+/* read single register */
+static int qt1010_readreg(struct qt1010_priv *priv, u8 reg, u8 *val)
+{
+ struct i2c_msg msg[2] = {
+ { .addr = priv->cfg->i2c_address,
+ .flags = 0, .buf = &reg, .len = 1 },
+ { .addr = priv->cfg->i2c_address,
+ .flags = I2C_M_RD, .buf = val, .len = 1 },
+ };
+
+ if (i2c_transfer(priv->i2c, msg, 2) != 2) {
+ printk(KERN_WARNING "qt1010 I2C read failed\n");
+ return -EREMOTEIO;
+ }
+ return 0;
+}
+
+/* write single register */
+static int qt1010_writereg(struct qt1010_priv *priv, u8 reg, u8 val)
+{
+ u8 buf[2] = { reg, val };
+ struct i2c_msg msg = { .addr = priv->cfg->i2c_address,
+ .flags = 0, .buf = buf, .len = 2 };
+
+ if (i2c_transfer(priv->i2c, &msg, 1) != 1) {
+ printk(KERN_WARNING "qt1010 I2C write failed\n");
+ return -EREMOTEIO;
+ }
+ return 0;
+}
+
+/* dump all registers */
+static void qt1010_dump_regs(struct qt1010_priv *priv)
+{
+ char buf[52], buf2[4];
+ u8 reg, val;
+
+ for (reg = 0; ; reg++) {
+ if (reg % 16 == 0) {
+ if (reg)
+ printk("%s\n", buf);
+ sprintf(buf, "%02x: ", reg);
+ }
+ if (qt1010_readreg(priv, reg, &val) == 0)
+ sprintf(buf2, "%02x ", val);
+ else
+ strcpy(buf2, "-- ");
+ strcat(buf, buf2);
+ if (reg == 0x2f)
+ break;
+ }
+ printk("%s\n", buf);
+}
+
+static int qt1010_set_params(struct dvb_frontend *fe,
+ struct dvb_frontend_parameters *params)
+{
+ struct qt1010_priv *priv;
+ int err;
+ u32 freq, div, mod1, mod2;
+ u8 i, tmpval, reg05;
+ qt1010_i2c_oper_t rd[48] = {
+ { QT1010_WR, 0x01, 0x80 },
+ { QT1010_WR, 0x02, 0x3f },
+ { QT1010_WR, 0x05, 0xff }, /* 02 c write */
+ { QT1010_WR, 0x06, 0x44 },
+ { QT1010_WR, 0x07, 0xff }, /* 04 c write */
+ { QT1010_WR, 0x08, 0x08 },
+ { QT1010_WR, 0x09, 0xff }, /* 06 c write */
+ { QT1010_WR, 0x0a, 0xff }, /* 07 c write */
+ { QT1010_WR, 0x0b, 0xff }, /* 08 c write */
+ { QT1010_WR, 0x0c, 0xe1 },
+ { QT1010_WR, 0x1a, 0xff }, /* 10 c write */
+ { QT1010_WR, 0x1b, 0x00 },
+ { QT1010_WR, 0x1c, 0x89 },
+ { QT1010_WR, 0x11, 0xff }, /* 13 c write */
+ { QT1010_WR, 0x12, 0xff }, /* 14 c write */
+ { QT1010_WR, 0x22, 0xff }, /* 15 c write */
+ { QT1010_WR, 0x1e, 0x00 },
+ { QT1010_WR, 0x1e, 0xd0 },
+ { QT1010_RD, 0x22, 0xff }, /* 16 c read */
+ { QT1010_WR, 0x1e, 0x00 },
+ { QT1010_RD, 0x05, 0xff }, /* 20 c read */
+ { QT1010_RD, 0x22, 0xff }, /* 21 c read */
+ { QT1010_WR, 0x23, 0xd0 },
+ { QT1010_WR, 0x1e, 0x00 },
+ { QT1010_WR, 0x1e, 0xe0 },
+ { QT1010_RD, 0x23, 0xff }, /* 25 c read */
+ { QT1010_RD, 0x23, 0xff }, /* 26 c read */
+ { QT1010_WR, 0x1e, 0x00 },
+ { QT1010_WR, 0x24, 0xd0 },
+ { QT1010_WR, 0x1e, 0x00 },
+ { QT1010_WR, 0x1e, 0xf0 },
+ { QT1010_RD, 0x24, 0xff }, /* 31 c read */
+ { QT1010_WR, 0x1e, 0x00 },
+ { QT1010_WR, 0x14, 0x7f },
+ { QT1010_WR, 0x15, 0x7f },
+ { QT1010_WR, 0x05, 0xff }, /* 35 c write */
+ { QT1010_WR, 0x06, 0x00 },
+ { QT1010_WR, 0x15, 0x1f },
+ { QT1010_WR, 0x16, 0xff },
+ { QT1010_WR, 0x18, 0xff },
+ { QT1010_WR, 0x1f, 0xff }, /* 40 c write */
+ { QT1010_WR, 0x20, 0xff }, /* 41 c write */
+ { QT1010_WR, 0x21, 0x53 },
+ { QT1010_WR, 0x25, 0xff }, /* 43 c write */
+ { QT1010_WR, 0x26, 0x15 },
+ { QT1010_WR, 0x00, 0xff }, /* 45 c write */
+ { QT1010_WR, 0x02, 0x00 },
+ { QT1010_WR, 0x01, 0x00 }
+ };
+
+#define FREQ1 32000000 /* 32 MHz */
+#define FREQ2 4000000 /* 4 MHz Quartz oscillator in the stick? */
+
+ priv = fe->tuner_priv;
+ freq = params->frequency;
+ div = (freq + QT1010_OFFSET) / QT1010_STEP;
+ freq = (div * QT1010_STEP) - QT1010_OFFSET;
+ mod1 = (freq + QT1010_OFFSET) % FREQ1;
+ mod2 = (freq + QT1010_OFFSET) % FREQ2;
+ priv->bandwidth =
+ (fe->ops.info.type == FE_OFDM) ? params->u.ofdm.bandwidth : 0;
+ priv->frequency = freq;
+
+ if (fe->ops.i2c_gate_ctrl)
+ fe->ops.i2c_gate_ctrl(fe, 1); /* open i2c_gate */
+
+ /* reg 05 base value */
+ if (freq < 290000000) reg05 = 0x14; /* 290 MHz */
+ else if (freq < 610000000) reg05 = 0x34; /* 610 MHz */
+ else if (freq < 802000000) reg05 = 0x54; /* 802 MHz */
+ else reg05 = 0x74;
+
+ /* 0x5 */
+ rd[2].val = reg05;
+
+ /* 07 - set frequency: 32 MHz scale */
+ rd[4].val = (freq + QT1010_OFFSET) / FREQ1;
+
+ /* 09 - changes every 8/24 MHz */
+ if (mod1 < 8000000) rd[6].val = 0x1d;
+ else rd[6].val = 0x1c;
+
+ /* 0a - set frequency: 4 MHz scale (max 28 MHz) */
+ if (mod1 < 1*FREQ2) rd[7].val = 0x09; /* +0 MHz */
+ else if (mod1 < 2*FREQ2) rd[7].val = 0x08; /* +4 MHz */
+ else if (mod1 < 3*FREQ2) rd[7].val = 0x0f; /* +8 MHz */
+ else if (mod1 < 4*FREQ2) rd[7].val = 0x0e; /* +12 MHz */
+ else if (mod1 < 5*FREQ2) rd[7].val = 0x0d; /* +16 MHz */
+ else if (mod1 < 6*FREQ2) rd[7].val = 0x0c; /* +20 MHz */
+ else if (mod1 < 7*FREQ2) rd[7].val = 0x0b; /* +24 MHz */
+ else rd[7].val = 0x0a; /* +28 MHz */
+
+ /* 0b - changes every 2/2 MHz */
+ if (mod2 < 2000000) rd[8].val = 0x45;
+ else rd[8].val = 0x44;
+
+ /* 1a - set frequency: 125 kHz scale (max 3875 kHz)*/
+ tmpval = 0x78; /* byte, overflows intentionally */
+ rd[10].val = tmpval-((mod2/QT1010_STEP)*0x08);
+
+ /* 11 */
+ rd[13].val = 0xfd; /* TODO: correct value calculation */
+
+ /* 12 */
+ rd[14].val = 0x91; /* TODO: correct value calculation */
+
+ /* 22 */
+ if (freq < 450000000) rd[15].val = 0xd0; /* 450 MHz */
+ else if (freq < 482000000) rd[15].val = 0xd1; /* 482 MHz */
+ else if (freq < 514000000) rd[15].val = 0xd4; /* 514 MHz */
+ else if (freq < 546000000) rd[15].val = 0xd7; /* 546 MHz */
+ else if (freq < 610000000) rd[15].val = 0xda; /* 610 MHz */
+ else rd[15].val = 0xd0;
+
+ /* 05 */
+ rd[35].val = (reg05 & 0xf0);
+
+ /* 1f */
+ if (mod1 < 8000000) tmpval = 0x00;
+ else if (mod1 < 12000000) tmpval = 0x01;
+ else if (mod1 < 16000000) tmpval = 0x02;
+ else if (mod1 < 24000000) tmpval = 0x03;
+ else if (mod1 < 28000000) tmpval = 0x04;
+ else tmpval = 0x05;
+ rd[40].val = (priv->reg1f_init_val + 0x0e + tmpval);
+
+ /* 20 */
+ if (mod1 < 8000000) tmpval = 0x00;
+ else if (mod1 < 12000000) tmpval = 0x01;
+ else if (mod1 < 20000000) tmpval = 0x02;
+ else if (mod1 < 24000000) tmpval = 0x03;
+ else if (mod1 < 28000000) tmpval = 0x04;
+ else tmpval = 0x05;
+ rd[41].val = (priv->reg20_init_val + 0x0d + tmpval);
+
+ /* 25 */
+ rd[43].val = priv->reg25_init_val;
+
+ /* 00 */
+ rd[45].val = 0x92; /* TODO: correct value calculation */
+
+ dprintk("freq:%u 05:%02x 07:%02x 09:%02x 0a:%02x 0b:%02x " \
+ "1a:%02x 11:%02x 12:%02x 22:%02x 05:%02x 1f:%02x " \
+ "20:%02x 25:%02x 00:%02x", \
+ freq, rd[2].val, rd[4].val, rd[6].val, rd[7].val, rd[8].val, \
+ rd[10].val, rd[13].val, rd[14].val, rd[15].val, rd[35].val, \
+ rd[40].val, rd[41].val, rd[43].val, rd[45].val);
+
+ for (i = 0; i < ARRAY_SIZE(rd); i++) {
+ if (rd[i].oper == QT1010_WR) {
+ err = qt1010_writereg(priv, rd[i].reg, rd[i].val);
+ } else { /* read is required to proper locking */
+ err = qt1010_readreg(priv, rd[i].reg, &tmpval);
+ }
+ if (err) return err;
+ }
+
+ if (debug)
+ qt1010_dump_regs(priv);
+
+ if (fe->ops.i2c_gate_ctrl)
+ fe->ops.i2c_gate_ctrl(fe, 0); /* close i2c_gate */
+
+ return 0;
+}
+
+static int qt1010_init_meas1(struct qt1010_priv *priv,
+ u8 oper, u8 reg, u8 reg_init_val, u8 *retval)
+{
+ u8 i, val1, val2;
+ int err;
+
+ qt1010_i2c_oper_t i2c_data[] = {
+ { QT1010_WR, reg, reg_init_val },
+ { QT1010_WR, 0x1e, 0x00 },
+ { QT1010_WR, 0x1e, oper },
+ { QT1010_RD, reg, 0xff }
+ };
+
+ for (i = 0; i < ARRAY_SIZE(i2c_data); i++) {
+ if (i2c_data[i].oper == QT1010_WR) {
+ err = qt1010_writereg(priv, i2c_data[i].reg,
+ i2c_data[i].val);
+ } else {
+ err = qt1010_readreg(priv, i2c_data[i].reg, &val2);
+ }
+ if (err) return err;
+ }
+
+ do {
+ val1 = val2;
+ err = qt1010_readreg(priv, reg, &val2);
+ if (err) return err;
+ dprintk("compare reg:%02x %02x %02x", reg, val1, val2);
+ } while (val1 != val2);
+ *retval = val1;
+
+ return qt1010_writereg(priv, 0x1e, 0x00);
+}
+
+static u8 qt1010_init_meas2(struct qt1010_priv *priv,
+ u8 reg_init_val, u8 *retval)
+{
+ u8 i, val;
+ int err;
+ qt1010_i2c_oper_t i2c_data[] = {
+ { QT1010_WR, 0x07, reg_init_val },
+ { QT1010_WR, 0x22, 0xd0 },
+ { QT1010_WR, 0x1e, 0x00 },
+ { QT1010_WR, 0x1e, 0xd0 },
+ { QT1010_RD, 0x22, 0xff },
+ { QT1010_WR, 0x1e, 0x00 },
+ { QT1010_WR, 0x22, 0xff }
+ };
+ for (i = 0; i < ARRAY_SIZE(i2c_data); i++) {
+ if (i2c_data[i].oper == QT1010_WR) {
+ err = qt1010_writereg(priv, i2c_data[i].reg,
+ i2c_data[i].val);
+ } else {
+ err = qt1010_readreg(priv, i2c_data[i].reg, &val);
+ }
+ if (err) return err;
+ }
+ *retval = val;
+ return 0;
+}
+
+static int qt1010_init(struct dvb_frontend *fe)
+{
+ struct qt1010_priv *priv = fe->tuner_priv;
+ struct dvb_frontend_parameters params;
+ int err = 0;
+ u8 i, tmpval, *valptr = NULL;
+
+ qt1010_i2c_oper_t i2c_data[] = {
+ { QT1010_WR, 0x01, 0x80 },
+ { QT1010_WR, 0x0d, 0x84 },
+ { QT1010_WR, 0x0e, 0xb7 },
+ { QT1010_WR, 0x2a, 0x23 },
+ { QT1010_WR, 0x2c, 0xdc },
+ { QT1010_M1, 0x25, 0x40 }, /* get reg 25 init value */
+ { QT1010_M1, 0x81, 0xff }, /* get reg 25 init value */
+ { QT1010_WR, 0x2b, 0x70 },
+ { QT1010_WR, 0x2a, 0x23 },
+ { QT1010_M1, 0x26, 0x08 },
+ { QT1010_M1, 0x82, 0xff },
+ { QT1010_WR, 0x05, 0x14 },
+ { QT1010_WR, 0x06, 0x44 },
+ { QT1010_WR, 0x07, 0x28 },
+ { QT1010_WR, 0x08, 0x0b },
+ { QT1010_WR, 0x11, 0xfd },
+ { QT1010_M1, 0x22, 0x0d },
+ { QT1010_M1, 0xd0, 0xff },
+ { QT1010_WR, 0x06, 0x40 },
+ { QT1010_WR, 0x16, 0xf0 },
+ { QT1010_WR, 0x02, 0x38 },
+ { QT1010_WR, 0x03, 0x18 },
+ { QT1010_WR, 0x20, 0xe0 },
+ { QT1010_M1, 0x1f, 0x20 }, /* get reg 1f init value */
+ { QT1010_M1, 0x84, 0xff }, /* get reg 1f init value */
+ { QT1010_RD, 0x20, 0x20 }, /* get reg 20 init value */
+ { QT1010_WR, 0x03, 0x19 },
+ { QT1010_WR, 0x02, 0x3f },
+ { QT1010_WR, 0x21, 0x53 },
+ { QT1010_RD, 0x21, 0xff },
+ { QT1010_WR, 0x11, 0xfd },
+ { QT1010_WR, 0x05, 0x34 },
+ { QT1010_WR, 0x06, 0x44 },
+ { QT1010_WR, 0x08, 0x08 }
+ };
+
+ if (fe->ops.i2c_gate_ctrl)
+ fe->ops.i2c_gate_ctrl(fe, 1); /* open i2c_gate */
+
+ for (i = 0; i < ARRAY_SIZE(i2c_data); i++) {
+ switch (i2c_data[i].oper) {
+ case QT1010_WR:
+ err = qt1010_writereg(priv, i2c_data[i].reg,
+ i2c_data[i].val);
+ break;
+ case QT1010_RD:
+ if (i2c_data[i].val == 0x20)
+ valptr = &priv->reg20_init_val;
+ else
+ valptr = &tmpval;
+ err = qt1010_readreg(priv, i2c_data[i].reg, valptr);
+ break;
+ case QT1010_M1:
+ if (i2c_data[i].val == 0x25)
+ valptr = &priv->reg25_init_val;
+ else if (i2c_data[i].val == 0x1f)
+ valptr = &priv->reg1f_init_val;
+ else
+ valptr = &tmpval;
+ err = qt1010_init_meas1(priv, i2c_data[i+1].reg,
+ i2c_data[i].reg,
+ i2c_data[i].val, valptr);
+ i++;
+ break;
+ }
+ if (err) return err;
+ }
+
+ for (i = 0x31; i < 0x3a; i++) /* 0x31 - 0x39 */
+ if ((err = qt1010_init_meas2(priv, i, &tmpval)))
+ return err;
+
+ params.frequency = 545000000; /* Sigmatek DVB-110 545000000 */
+ /* MSI Megasky 580 GL861 533000000 */
+ return qt1010_set_params(fe, &params);
+}
+
+static int qt1010_release(struct dvb_frontend *fe)
+{
+ kfree(fe->tuner_priv);
+ fe->tuner_priv = NULL;
+ return 0;
+}
+
+static int qt1010_get_frequency(struct dvb_frontend *fe, u32 *frequency)
+{
+ struct qt1010_priv *priv = fe->tuner_priv;
+ *frequency = priv->frequency;
+ return 0;
+}
+
+static int qt1010_get_bandwidth(struct dvb_frontend *fe, u32 *bandwidth)
+{
+ struct qt1010_priv *priv = fe->tuner_priv;
+ *bandwidth = priv->bandwidth;
+ return 0;
+}
+
+static const struct dvb_tuner_ops qt1010_tuner_ops = {
+ .info = {
+ .name = "Quantek QT1010",
+ .frequency_min = QT1010_MIN_FREQ,
+ .frequency_max = QT1010_MAX_FREQ,
+ .frequency_step = QT1010_STEP,
+ },
+
+ .release = qt1010_release,
+ .init = qt1010_init,
+ /* TODO: implement sleep */
+
+ .set_params = qt1010_set_params,
+ .get_frequency = qt1010_get_frequency,
+ .get_bandwidth = qt1010_get_bandwidth
+};
+
+struct dvb_frontend * qt1010_attach(struct dvb_frontend *fe,
+ struct i2c_adapter *i2c,
+ struct qt1010_config *cfg)
+{
+ struct qt1010_priv *priv = NULL;
+ u8 id;
+
+ priv = kzalloc(sizeof(struct qt1010_priv), GFP_KERNEL);
+ if (priv == NULL)
+ return NULL;
+
+ priv->cfg = cfg;
+ priv->i2c = i2c;
+
+ if (fe->ops.i2c_gate_ctrl)
+ fe->ops.i2c_gate_ctrl(fe, 1); /* open i2c_gate */
+
+
+ /* Try to detect tuner chip. Probably this is not correct register. */
+ if (qt1010_readreg(priv, 0x29, &id) != 0 || (id != 0x39)) {
+ kfree(priv);
+ return NULL;
+ }
+
+ if (fe->ops.i2c_gate_ctrl)
+ fe->ops.i2c_gate_ctrl(fe, 0); /* close i2c_gate */
+
+ printk(KERN_INFO "Quantek QT1010 successfully identified.\n");
+ memcpy(&fe->ops.tuner_ops, &qt1010_tuner_ops,
+ sizeof(struct dvb_tuner_ops));
+
+ fe->tuner_priv = priv;
+ return fe;
+}
+EXPORT_SYMBOL(qt1010_attach);
+
+MODULE_DESCRIPTION("Quantek QT1010 silicon tuner driver");
+MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
+MODULE_AUTHOR("Aapo Tahkola <aet@rasterburn.org>");
+MODULE_VERSION("0.1");
+MODULE_LICENSE("GPL");
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-21 05:41:16 +0000