[media] fc001x: tuner driver for FC0012, version 0.5
authorHans-Frieder Vogt <hfvogt@gmx.net>
Sun, 6 May 2012 19:56:55 +0000 (16:56 -0300)
committerMauro Carvalho Chehab <mchehab@redhat.com>
Sun, 20 May 2012 13:19:46 +0000 (10:19 -0300)
Support for tuner Fitipower FC0012

Signed-off-by: Hans-Frieder Vogt <hfvogt@gmx.net>
Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
drivers/media/common/tuners/Kconfig
drivers/media/common/tuners/Makefile
drivers/media/common/tuners/fc0012-priv.h [new file with mode: 0644]
drivers/media/common/tuners/fc0012.c [new file with mode: 0644]
drivers/media/common/tuners/fc0012.h [new file with mode: 0644]

index 0fd15d9..8518251 100644 (file)
@@ -211,6 +211,13 @@ config MEDIA_TUNER_FC0011
        help
          Fitipower FC0011 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.
+
 config MEDIA_TUNER_TDA18212
        tristate "NXP TDA18212 silicon tuner"
        depends on VIDEO_MEDIA && I2C
index 64ee06f..f046106 100644 (file)
@@ -30,6 +30,7 @@ obj-$(CONFIG_MEDIA_TUNER_TDA18218) += tda18218.o
 obj-$(CONFIG_MEDIA_TUNER_TDA18212) += tda18212.o
 obj-$(CONFIG_MEDIA_TUNER_TUA9001) += tua9001.o
 obj-$(CONFIG_MEDIA_TUNER_FC0011) += fc0011.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
diff --git a/drivers/media/common/tuners/fc0012-priv.h b/drivers/media/common/tuners/fc0012-priv.h
new file mode 100644 (file)
index 0000000..4577c91
--- /dev/null
@@ -0,0 +1,43 @@
+/*
+ * Fitipower FC0012 tuner driver - private includes
+ *
+ * Copyright (C) 2012 Hans-Frieder Vogt <hfvogt@gmx.net>
+ *
+ * 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 dual_master;
+       u8 xtal_freq;
+
+       u32 frequency;
+       u32 bandwidth;
+};
+
+#endif
diff --git a/drivers/media/common/tuners/fc0012.c b/drivers/media/common/tuners/fc0012.c
new file mode 100644 (file)
index 0000000..cd58f90
--- /dev/null
@@ -0,0 +1,397 @@
+/*
+ * Fitipower FC0012 tuner driver
+ *
+ * Copyright (C) 2012 Hans-Frieder Vogt <hfvogt@gmx.net>
+ *
+ * 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 = &reg, .len = 1 },
+               { .addr = priv->addr, .flags = I2C_M_RD, .buf = val, .len = 1 },
+       };
+
+       if (i2c_transfer(priv->i2c, msg, 2) != 2) {
+               err("I2C read reg 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 */
+               0x0f,   /* reg. 0x05: may also be 0x0a */
+               0x00,   /* reg. 0x06: divider 2, VCO slow */
+               0x00,   /* reg. 0x07: may also be 0x0f */
+               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 */
+               0x82,   /* reg. 0x0b: Output Clock is same as clock frequency,
+                          may also be 0x83 */
+               0xfc,   /* 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 */
+               0x00,   /* reg. 0x10: may also be 0x0d */
+               0x00,   /* reg. 0x11 */
+               0x1f,   /* reg. 0x12: Set to maximum gain */
+               0x08,   /* reg. 0x13: Set to Middle Gain: 0x08,
+                          Low Gain: 0x00, High Gain: 0x10, enable IX2: 0x80 */
+               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 (priv->dual_master)
+               reg[0x0c] |= 0x02;
+
+       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)
+               err("fc0012_writereg failed: %d", 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[7], am, pm, multi, tmp;
+       unsigned long f_vco;
+       unsigned short xtal_freq_khz_2, xin, xdiv;
+       int vco_select = false;
+
+       if (fe->callback) {
+               ret = fe->callback(priv->i2c, DVB_FRONTEND_COMPONENT_TUNER,
+                       FC_FE_CALLBACK_VHF_ENABLE, (freq > 300000 ? 0 : 1));
+               if (ret)
+                       goto exit;
+       }
+
+       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 < 37084) {             /* freq * 96 < 3560000 */
+               multi = 96;
+               reg[5] = 0x82;
+               reg[6] = 0x00;
+       } else if (freq < 55625) {      /* freq * 64 < 3560000 */
+               multi = 64;
+               reg[5] = 0x82;
+               reg[6] = 0x02;
+       } else if (freq < 74167) {      /* freq * 48 < 3560000 */
+               multi = 48;
+               reg[5] = 0x42;
+               reg[6] = 0x00;
+       } else if (freq < 111250) {     /* freq * 32 < 3560000 */
+               multi = 32;
+               reg[5] = 0x42;
+               reg[6] = 0x02;
+       } else if (freq < 148334) {     /* freq * 24 < 3560000 */
+               multi = 24;
+               reg[5] = 0x22;
+               reg[6] = 0x00;
+       } else if (freq < 222500) {     /* freq * 16 < 3560000 */
+               multi = 16;
+               reg[5] = 0x22;
+               reg[6] = 0x02;
+       } else if (freq < 296667) {     /* freq * 12 < 3560000 */
+               multi = 12;
+               reg[5] = 0x12;
+               reg[6] = 0x00;
+       } else if (freq < 445000) {     /* freq * 8 < 3560000 */
+               multi = 8;
+               reg[5] = 0x12;
+               reg[6] = 0x02;
+       } else if (freq < 593334) {     /* freq * 6 < 3560000 */
+               multi = 6;
+               reg[5] = 0x0a;
+               reg[6] = 0x00;
+       } else {
+               multi = 4;
+               reg[5] = 0x0a;
+               reg[6] = 0x02;
+       }
+
+       f_vco = freq * multi;
+
+       if (f_vco >= 3060000) {
+               reg[6] |= 0x08;
+               vco_select = true;
+       }
+
+       if (freq >= 45000) {
+               /* From divided value (XDIV) determined the FA and FP value */
+               xdiv = (unsigned short)(f_vco / xtal_freq_khz_2);
+               if ((f_vco - 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)(f_vco - (f_vco / 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!", __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, &tmp);
+       }
+       if (ret)
+               goto exit;
+
+       /* vco selection */
+       tmp &= 0x3f;
+
+       if (vco_select) {
+               if (tmp > 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 (tmp < 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)
+               warn("%s: failed: %d", __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  = 37000000,     /* estimate */
+               .frequency_max  = 862000000,    /* estimate */
+               .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, int dual_master,
+       enum fc001x_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->dual_master = dual_master;
+       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@gmx.net>");
+MODULE_LICENSE("GPL");
+MODULE_VERSION("0.5");
diff --git a/drivers/media/common/tuners/fc0012.h b/drivers/media/common/tuners/fc0012.h
new file mode 100644 (file)
index 0000000..4dbd5ef
--- /dev/null
@@ -0,0 +1,44 @@
+/*
+ * Fitipower FC0012 tuner driver - include
+ *
+ * Copyright (C) 2012 Hans-Frieder Vogt <hfvogt@gmx.net>
+ *
+ * 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"
+#include "fc001x-common.h"
+
+#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, int dual_master,
+                                       enum fc001x_xtal_freq xtal_freq);
+#else
+static inline struct dvb_frontend *fc0012_attach(struct dvb_frontend *fe,
+                                       struct i2c_adapter *i2c,
+                                       u8 i2c_address, int dual_master,
+                                       enum fc001x_xtal_freq xtal_freq)
+{
+       printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
+       return NULL;
+}
+#endif
+
+#endif