Support for tuner Fitipower FC0012, revised version 0.4.
Changes compared to version 0.3:
- write function for multiple bytes at once removed again (because the maximum allowable length of an i2c
transfer may be different between various demodulators),
- introduction of i2c_gate_ctrl calls,
- usage of pr_debug instead of self designed deb_info,
- corrected setting of priv->frequency. Error spotted by Michael Büsch, thanks very much!
- replaced a few spaces with tabs (superfluous spaces also identified by Michael Büsch),
The patch is against the snapshot linux-media-2012-03-28.
Support for tuner Fitipower FC0012
Signed-off-by: Hans-Frieder Vogt <hfvogt@xxxxxxx>
drivers/media/common/tuners/Kconfig | 7
drivers/media/common/tuners/Makefile | 1
drivers/media/common/tuners/fc0012-priv.h | 42 +++
drivers/media/common/tuners/fc0012.c | 385 ++++++++++++++++++++++++++++++
drivers/media/common/tuners/fc0012.h | 49 +++
5 files changed, 484 insertions(+)
diff -Nupr a/drivers/media/common/tuners/fc0012.c b/drivers/media/common/tuners/fc0012.c
--- a/drivers/media/common/tuners/fc0012.c 1970-01-01 01:00:00.000000000 +0100
+++ b/drivers/media/common/tuners/fc0012.c 2012-04-01 00:16:15.956198248 +0200
@@ -0,0 +1,385 @@
+/*
+ * Fitipower FC0012 tuner driver
+ *
+ * Copyright (C) 2012 Hans-Frieder Vogt <hfvogt@xxxxxxx>
+ *
+ * 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 "fc0012.h"
+#include "fc0012-priv.h"
+
+static int fc0012_writereg(struct fc0012_priv *priv, u8 reg, u8 val)
+{
+ u8 buf[2] = {reg, val};
+ struct i2c_msg msg = { .addr = priv->addr,
+ .flags = 0, .buf = buf, .len = 2 };
+
+ if (i2c_transfer(priv->i2c, &msg, 1) != 1) {
+ err("I2C write reg failed, reg: %02x, val: %02x", reg, val);
+ return -EREMOTEIO;
+ }
+ return 0;
+}
+
+static int fc0012_readreg(struct fc0012_priv *priv, u8 reg, u8 *val)
+{
+ struct i2c_msg msg[2] = {
+ { .addr = priv->addr,
+ .flags = 0, .buf = ®, .len = 1 },
+ { .addr = priv->addr,
+ .flags = I2C_M_RD, .buf = val, .len = 1 },
+ };
+
+ if (i2c_transfer(priv->i2c, msg, 2) != 2) {
+ err("I2C read failed, reg: %02x", reg);
+ return -EREMOTEIO;
+ }
+ return 0;
+}
+
+static int fc0012_release(struct dvb_frontend *fe)
+{
+ kfree(fe->tuner_priv);
+ fe->tuner_priv = NULL;
+ return 0;
+}
+
+static int fc0012_init(struct dvb_frontend *fe)
+{
+ struct fc0012_priv *priv = fe->tuner_priv;
+ int i, ret = 0;
+ unsigned char reg[] = {
+ 0x00, /* dummy reg. 0 */
+ 0x05, /* reg. 0x01 */
+ 0x10, /* reg. 0x02 */
+ 0x00, /* reg. 0x03 */
+ 0x00, /* reg. 0x04 */
+ 0x0a, /* reg. 0x05 CHECK: correct? */
+ 0x00, /* reg. 0x06: divider 2, VCO slow */
+ 0x0f, /* reg. 0x07 */
+ 0xff, /* reg. 0x08: AGC Clock divide by 256, AGC gain 1/256,
+ Loop Bw 1/8 */
+ 0x6e, /* reg. 0x09: Disable LoopThrough, Enable LoopThrough: 0x6f */
+ 0xb8, /* reg. 0x0a: Disable LO Test Buffer */
+ 0x83, /* reg. 0x0b: Output Clock is same as clock frequency */
+ 0xfe, /* reg. 0x0c: depending on AGC Up-Down mode, may need 0xf8 */
+ 0x02, /* reg. 0x0d: AGC Not Forcing & LNA Forcing, 0x02 for DVB-T */
+ 0x00, /* reg. 0x0e */
+ 0x00, /* reg. 0x0f */
+ 0x0d, /* reg. 0x10 */
+ 0x00, /* reg. 0x11 */
+ 0x1f, /* reg. 0x12: Set to maximum gain */
+ 0x90, /* reg. 0x13: Enable IX2, Set to Middle Gain: 0x08,
+ Low Gain: 0x00, High Gain: 0x10 */
+ 0x00, /* reg. 0x14 */
+ 0x04, /* reg. 0x15: Enable LNA COMPS */
+ };
+
+ switch (priv->xtal_freq) {
+ case FC_XTAL_27_MHZ:
+ case FC_XTAL_28_8_MHZ:
+ reg[0x07] |= 0x20;
+ break;
+ case FC_XTAL_36_MHZ:
+ default:
+ break;
+ }
+
+ if (fe->ops.i2c_gate_ctrl)
+ fe->ops.i2c_gate_ctrl(fe, 1); /* open I2C-gate */
+
+ for (i = 1; i < sizeof(reg); i++) {
+ ret = fc0012_writereg(priv, i, reg[i]);
+ if (ret)
+ break;
+ }
+
+ if (fe->ops.i2c_gate_ctrl)
+ fe->ops.i2c_gate_ctrl(fe, 0); /* close I2C-gate */
+
+ if (ret)
+ pr_debug("%s: failed: %d\n", __func__, ret);
+
+ return ret;
+}
+
+static int fc0012_sleep(struct dvb_frontend *fe)
+{
+ /* nothing to do here */
+ return 0;
+}
+
+static int fc0012_set_params(struct dvb_frontend *fe)
+{
+ struct fc0012_priv *priv = fe->tuner_priv;
+ int i, ret = 0;
+ struct dtv_frontend_properties *p = &fe->dtv_property_cache;
+ u32 freq = p->frequency / 1000;
+ u32 delsys = p->delivery_system;
+ unsigned char reg[0x16], am, pm, multi;
+ unsigned long fVCO;
+ unsigned short xtal_freq_khz_2, xin, xdiv;
+ int vco_select = false;
+
+ switch (priv->xtal_freq) {
+ case FC_XTAL_27_MHZ:
+ xtal_freq_khz_2 = 27000 / 2;
+ break;
+ case FC_XTAL_36_MHZ:
+ xtal_freq_khz_2 = 36000 / 2;
+ break;
+ case FC_XTAL_28_8_MHZ:
+ default:
+ xtal_freq_khz_2 = 28800 / 2;
+ break;
+ }
+
+ /* select frequency divider and the frequency of VCO */
+ if (freq * 96 < 3560000) {
+ multi = 96;
+ reg[5] = 0x82;
+ reg[6] = 0x00;
+ } else if (freq * 64 < 3560000) {
+ multi = 64;
+ reg[5] = 0x82;
+ reg[6] = 0x02;
+ } else if (freq * 48 < 3560000) {
+ multi = 48;
+ reg[5] = 0x42;
+ reg[6] = 0x00;
+ } else if (freq * 32 < 3560000) {
+ multi = 32;
+ reg[5] = 0x42;
+ reg[6] = 0x02;
+ } else if (freq * 24 < 3560000) {
+ multi = 24;
+ reg[5] = 0x22;
+ reg[6] = 0x00;
+ } else if (freq * 16 < 3560000) {
+ multi = 16;
+ reg[5] = 0x22;
+ reg[6] = 0x02;
+ } else if (freq * 12 < 3560000) {
+ multi = 12;
+ reg[5] = 0x12;
+ reg[6] = 0x00;
+ } else if (freq * 8 < 3560000) {
+ multi = 8;
+ reg[5] = 0x12;
+ reg[6] = 0x02;
+ } else if (freq * 6 < 3560000) {
+ multi = 6;
+ reg[5] = 0x0a;
+ reg[6] = 0x00;
+ } else {
+ multi = 4;
+ reg[5] = 0x0a;
+ reg[6] = 0x02;
+ }
+
+ fVCO = freq * multi;
+
+ if (fVCO >= 3060000) {
+ reg[6] |= 0x08;
+ vco_select = true;
+ }
+
+ if (freq >= 45000) {
+ /* From divided value (XDIV) determined the FA and FP value */
+ xdiv = (unsigned short)(fVCO / xtal_freq_khz_2);
+ if ((fVCO - xdiv * xtal_freq_khz_2) >= (xtal_freq_khz_2 / 2))
+ xdiv++;
+
+ pm = (unsigned char)(xdiv / 8);
+ am = (unsigned char)(xdiv - (8 * pm));
+
+ if (am < 2) {
+ reg[1] = am + 8;
+ reg[2] = pm - 1;
+ } else {
+ reg[1] = am;
+ reg[2] = pm;
+ }
+ } else {
+ /* fix for frequency less than 45 MHz */
+ reg[1] = 0x06;
+ reg[2] = 0x11;
+ }
+
+ /* fix clock out */
+ reg[6] |= 0x20;
+
+ /* From VCO frequency determines the XIN ( fractional part of Delta
+ Sigma PLL) and divided value (XDIV) */
+ xin = (unsigned short)(fVCO - (fVCO / xtal_freq_khz_2) * xtal_freq_khz_2);
+ xin = (xin << 15) / xtal_freq_khz_2;
+ if (xin >= 16384)
+ xin += 32768;
+
+ reg[3] = xin >> 8; /* xin with 9 bit resolution */
+ reg[4] = xin & 0xff;
+
+ if (delsys == SYS_DVBT) {
+ reg[6] &= 0x3f; /* bits 6 and 7 describe the bandwidth */
+ switch (p->bandwidth_hz) {
+ case 6000000:
+ reg[6] |= 0x80;
+ break;
+ case 7000000:
+ reg[6] |= 0x40;
+ break;
+ case 8000000:
+ default:
+ break;
+ }
+ } else {
+ err("%s: modulation type not supported!\n", __func__);
+ return -EINVAL;
+ }
+
+ /* modified for Realtek demod */
+ reg[5] |= 0x07;
+
+ if (fe->ops.i2c_gate_ctrl)
+ fe->ops.i2c_gate_ctrl(fe, 1); /* open I2C-gate */
+
+ for (i = 1; i <= 6; i++) {
+ ret = fc0012_writereg(priv, i, reg[i]);
+ if (ret)
+ goto exit;
+ }
+
+ /* VCO Calibration */
+ ret = fc0012_writereg(priv, 0x0e, 0x80);
+ if (!ret)
+ ret = fc0012_writereg(priv, 0x0e, 0x00);
+ /* VCO Re-Calibration if needed */
+ if (!ret)
+ ret = fc0012_writereg(priv, 0x0e, 0x00);
+
+ if (!ret) {
+ msleep(10);
+ ret = fc0012_readreg(priv, 0x0e, ®[0x0e]);
+ }
+ if (ret)
+ goto exit;
+
+ /* vco selection */
+ reg[0x0e] &= 0x3f;
+
+ if (vco_select) {
+ if (reg[0x0e] > 0x3c) {
+ reg[6] &= ~0x08;
+ ret = fc0012_writereg(priv, 0x06, reg[6]);
+ if (!ret)
+ ret = fc0012_writereg(priv, 0x0e, 0x80);
+ if (!ret)
+ ret = fc0012_writereg(priv, 0x0e, 0x00);
+ }
+ } else {
+ if (reg[0x0e] < 0x02) {
+ reg[6] |= 0x08;
+ ret = fc0012_writereg(priv, 0x06, reg[6]);
+ if (!ret)
+ ret = fc0012_writereg(priv, 0x0e, 0x80);
+ if (!ret)
+ ret = fc0012_writereg(priv, 0x0e, 0x00);
+ }
+ }
+
+ priv->frequency = p->frequency;
+ priv->bandwidth = p->bandwidth_hz;
+
+exit:
+ if (fe->ops.i2c_gate_ctrl)
+ fe->ops.i2c_gate_ctrl(fe, 0); /* close I2C-gate */
+ if (ret)
+ pr_debug("%s: failed: %d\n", __func__, ret);
+ return ret;
+}
+
+static int fc0012_get_frequency(struct dvb_frontend *fe, u32 *frequency)
+{
+ struct fc0012_priv *priv = fe->tuner_priv;
+ *frequency = priv->frequency;
+ return 0;
+}
+
+static int fc0012_get_if_frequency(struct dvb_frontend *fe, u32 *frequency)
+{
+ /* CHECK: always ? */
+ *frequency = 0;
+ return 0;
+}
+
+static int fc0012_get_bandwidth(struct dvb_frontend *fe, u32 *bandwidth)
+{
+ struct fc0012_priv *priv = fe->tuner_priv;
+ *bandwidth = priv->bandwidth;
+ return 0;
+}
+
+
+static const struct dvb_tuner_ops fc0012_tuner_ops = {
+ .info = {
+ .name = "Fitipower FC0012",
+
+ .frequency_min = 170000000,
+ .frequency_max = 860000000,
+ .frequency_step = 0,
+ },
+
+ .release = fc0012_release,
+
+ .init = fc0012_init,
+ .sleep = fc0012_sleep,
+
+ .set_params = fc0012_set_params,
+
+ .get_frequency = fc0012_get_frequency,
+ .get_if_frequency = fc0012_get_if_frequency,
+ .get_bandwidth = fc0012_get_bandwidth,
+};
+
+struct dvb_frontend * fc0012_attach(struct dvb_frontend *fe,
+ struct i2c_adapter *i2c, u8 i2c_address,
+ enum fc0012_xtal_freq xtal_freq)
+{
+ struct fc0012_priv *priv = NULL;
+
+ priv = kzalloc(sizeof(struct fc0012_priv), GFP_KERNEL);
+ if (priv == NULL)
+ return NULL;
+
+ priv->i2c = i2c;
+ priv->addr = i2c_address;
+ priv->xtal_freq = xtal_freq;
+
+ info("Fitipower FC0012 successfully attached.");
+
+ fe->tuner_priv = priv;
+
+ memcpy(&fe->ops.tuner_ops, &fc0012_tuner_ops,
+ sizeof(struct dvb_tuner_ops));
+
+ return fe;
+}
+EXPORT_SYMBOL(fc0012_attach);
+
+MODULE_DESCRIPTION("Fitipower FC0012 silicon tuner driver");
+MODULE_AUTHOR("Hans-Frieder Vogt <hfvogt@xxxxxxx>");
+MODULE_LICENSE("GPL");
+MODULE_VERSION("0.4");
diff -Nupr a/drivers/media/common/tuners/fc0012.h b/drivers/media/common/tuners/fc0012.h
--- a/drivers/media/common/tuners/fc0012.h 1970-01-01 01:00:00.000000000 +0100
+++ b/drivers/media/common/tuners/fc0012.h 2012-04-01 00:13:06.811166635 +0200
@@ -0,0 +1,49 @@
+/*
+ * Fitipower FC0012 tuner driver - include
+ *
+ * Copyright (C) 2012 Hans-Frieder Vogt <hfvogt@xxxxxxx>
+ *
+ * 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.
+ */
+
+#ifndef _FC0012_H_
+#define _FC0012_H_
+
+#include "dvb_frontend.h"
+
+enum fc0012_xtal_freq {
+ FC_XTAL_27_MHZ, /* 27000000 */
+ FC_XTAL_28_8_MHZ, /* 28800000 */
+ FC_XTAL_36_MHZ, /* 36000000 */
+};
+
+#if defined(CONFIG_MEDIA_TUNER_FC0012) || \
+ (defined(CONFIG_MEDIA_TUNER_FC0012_MODULE) && defined(MODULE))
+extern struct dvb_frontend *fc0012_attach(struct dvb_frontend *fe,
+ struct i2c_adapter *i2c,
+ u8 i2c_address,
+ enum fc0012_xtal_freq xtal_freq);
+#else
+static inline struct dvb_frontend *fc0012_attach(struct dvb_frontend *fe,
+ struct i2c_adapter *i2c,
+ u8 i2c_address,
+ enum fc0012_xtal_freq xtal_freq)
+{
+ printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
+ return NULL;
+}
+#endif
+
+#endif
diff -Nupr a/drivers/media/common/tuners/fc0012-priv.h b/drivers/media/common/tuners/fc0012-priv.h
--- a/drivers/media/common/tuners/fc0012-priv.h 1970-01-01 01:00:00.000000000 +0100
+++ b/drivers/media/common/tuners/fc0012-priv.h 2012-04-01 00:13:22.801066482 +0200
@@ -0,0 +1,42 @@
+/*
+ * Fitipower FC0012 tuner driver - private includes
+ *
+ * Copyright (C) 2012 Hans-Frieder Vogt <hfvogt@xxxxxxx>
+ *
+ * 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.
+ */
+
+#ifndef _FC0012_PRIV_H_
+#define _FC0012_PRIV_H_
+
+#define LOG_PREFIX "fc0012"
+
+#undef err
+#define err(f, arg...) printk(KERN_ERR LOG_PREFIX": " f "\n" , ## arg)
+#undef info
+#define info(f, arg...) printk(KERN_INFO LOG_PREFIX": " f "\n" , ## arg)
+#undef warn
+#define warn(f, arg...) printk(KERN_WARNING LOG_PREFIX": " f "\n" , ## arg)
+
+struct fc0012_priv {
+ struct i2c_adapter *i2c;
+ u8 addr;
+ u8 xtal_freq;
+
+ u32 frequency;
+ u32 bandwidth;
+};
+
+#endif
diff -Nupr a/drivers/media/common/tuners/Kconfig b/drivers/media/common/tuners/Kconfig
--- a/drivers/media/common/tuners/Kconfig 2012-01-08 05:45:35.000000000 +0100
+++ b/drivers/media/common/tuners/Kconfig 2012-03-31 23:59:03.098424806 +0200
@@ -211,4 +211,11 @@ config MEDIA_TUNER_TDA18212
help
NXP TDA18212 silicon tuner driver.
+config MEDIA_TUNER_FC0012
+ tristate "Fitipower FC0012 silicon tuner"
+ depends on VIDEO_MEDIA && I2C
+ default m if MEDIA_TUNER_CUSTOMISE
+ help
+ Fitipower FC0012 silicon tuner driver.
+
endmenu
diff -Nupr a/drivers/media/common/tuners/Makefile b/drivers/media/common/tuners/Makefile
--- a/drivers/media/common/tuners/Makefile 2012-03-09 05:45:19.000000000 +0100
+++ b/drivers/media/common/tuners/Makefile 2012-04-01 00:00:05.697863847 +0200
@@ -28,6 +28,7 @@ obj-$(CONFIG_MEDIA_TUNER_MC44S803) += mc
obj-$(CONFIG_MEDIA_TUNER_MAX2165) += max2165.o
obj-$(CONFIG_MEDIA_TUNER_TDA18218) += tda18218.o
obj-$(CONFIG_MEDIA_TUNER_TDA18212) += tda18212.o
+obj-$(CONFIG_MEDIA_TUNER_FC0012) += fc0012.o
ccflags-y += -I$(srctree)/drivers/media/dvb/dvb-core
ccflags-y += -I$(srctree)/drivers/media/dvb/frontends
Hans-Frieder Vogt e-mail: hfvogt <at> gmx .dot. net
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