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path: root/drivers/media/common/tuners/fc0011.c
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Diffstat (limited to 'drivers/media/common/tuners/fc0011.c')
-rw-r--r--drivers/media/common/tuners/fc0011.c524
1 files changed, 524 insertions, 0 deletions
diff --git a/drivers/media/common/tuners/fc0011.c b/drivers/media/common/tuners/fc0011.c
new file mode 100644
index 000000000000..e4882546c283
--- /dev/null
+++ b/drivers/media/common/tuners/fc0011.c
@@ -0,0 +1,524 @@
+/*
+ * Fitipower FC0011 tuner driver
+ *
+ * Copyright (C) 2012 Michael Buesch <m@bues.ch>
+ *
+ * Derived from 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 "fc0011.h"
+
+
+/* Tuner registers */
+enum {
+ FC11_REG_0,
+ FC11_REG_FA, /* FA */
+ FC11_REG_FP, /* FP */
+ FC11_REG_XINHI, /* XIN high 8 bit */
+ FC11_REG_XINLO, /* XIN low 8 bit */
+ FC11_REG_VCO, /* VCO */
+ FC11_REG_VCOSEL, /* VCO select */
+ FC11_REG_7, /* Unknown tuner reg 7 */
+ FC11_REG_8, /* Unknown tuner reg 8 */
+ FC11_REG_9,
+ FC11_REG_10, /* Unknown tuner reg 10 */
+ FC11_REG_11, /* Unknown tuner reg 11 */
+ FC11_REG_12,
+ FC11_REG_RCCAL, /* RC calibrate */
+ FC11_REG_VCOCAL, /* VCO calibrate */
+ FC11_REG_15,
+ FC11_REG_16, /* Unknown tuner reg 16 */
+ FC11_REG_17,
+
+ FC11_NR_REGS, /* Number of registers */
+};
+
+enum FC11_REG_VCOSEL_bits {
+ FC11_VCOSEL_2 = 0x08, /* VCO select 2 */
+ FC11_VCOSEL_1 = 0x10, /* VCO select 1 */
+ FC11_VCOSEL_CLKOUT = 0x20, /* Fix clock out */
+ FC11_VCOSEL_BW7M = 0x40, /* 7MHz bw */
+ FC11_VCOSEL_BW6M = 0x80, /* 6MHz bw */
+};
+
+enum FC11_REG_RCCAL_bits {
+ FC11_RCCAL_FORCE = 0x10, /* force */
+};
+
+enum FC11_REG_VCOCAL_bits {
+ FC11_VCOCAL_RUN = 0, /* VCO calibration run */
+ FC11_VCOCAL_VALUEMASK = 0x3F, /* VCO calibration value mask */
+ FC11_VCOCAL_OK = 0x40, /* VCO calibration Ok */
+ FC11_VCOCAL_RESET = 0x80, /* VCO calibration reset */
+};
+
+
+struct fc0011_priv {
+ struct i2c_adapter *i2c;
+ u8 addr;
+
+ u32 frequency;
+ u32 bandwidth;
+};
+
+
+static int fc0011_writereg(struct fc0011_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) {
+ dev_err(&priv->i2c->dev,
+ "I2C write reg failed, reg: %02x, val: %02x\n",
+ reg, val);
+ return -EIO;
+ }
+
+ return 0;
+}
+
+static int fc0011_readreg(struct fc0011_priv *priv, u8 reg, u8 *val)
+{
+ u8 dummy;
+ struct i2c_msg msg[2] = {
+ { .addr = priv->addr,
+ .flags = 0, .buf = &reg, .len = 1 },
+ { .addr = priv->addr,
+ .flags = I2C_M_RD, .buf = val ? : &dummy, .len = 1 },
+ };
+
+ if (i2c_transfer(priv->i2c, msg, 2) != 2) {
+ dev_err(&priv->i2c->dev,
+ "I2C read failed, reg: %02x\n", reg);
+ return -EIO;
+ }
+
+ return 0;
+}
+
+static int fc0011_release(struct dvb_frontend *fe)
+{
+ kfree(fe->tuner_priv);
+ fe->tuner_priv = NULL;
+
+ return 0;
+}
+
+static int fc0011_init(struct dvb_frontend *fe)
+{
+ struct fc0011_priv *priv = fe->tuner_priv;
+ int err;
+
+ if (WARN_ON(!fe->callback))
+ return -EINVAL;
+
+ err = fe->callback(priv->i2c, DVB_FRONTEND_COMPONENT_TUNER,
+ FC0011_FE_CALLBACK_POWER, priv->addr);
+ if (err) {
+ dev_err(&priv->i2c->dev, "Power-on callback failed\n");
+ return err;
+ }
+ err = fe->callback(priv->i2c, DVB_FRONTEND_COMPONENT_TUNER,
+ FC0011_FE_CALLBACK_RESET, priv->addr);
+ if (err) {
+ dev_err(&priv->i2c->dev, "Reset callback failed\n");
+ return err;
+ }
+
+ return 0;
+}
+
+/* Initiate VCO calibration */
+static int fc0011_vcocal_trigger(struct fc0011_priv *priv)
+{
+ int err;
+
+ err = fc0011_writereg(priv, FC11_REG_VCOCAL, FC11_VCOCAL_RESET);
+ if (err)
+ return err;
+ err = fc0011_writereg(priv, FC11_REG_VCOCAL, FC11_VCOCAL_RUN);
+ if (err)
+ return err;
+
+ return 0;
+}
+
+/* Read VCO calibration value */
+static int fc0011_vcocal_read(struct fc0011_priv *priv, u8 *value)
+{
+ int err;
+
+ err = fc0011_writereg(priv, FC11_REG_VCOCAL, FC11_VCOCAL_RUN);
+ if (err)
+ return err;
+ usleep_range(10000, 20000);
+ err = fc0011_readreg(priv, FC11_REG_VCOCAL, value);
+ if (err)
+ return err;
+
+ return 0;
+}
+
+static int fc0011_set_params(struct dvb_frontend *fe)
+{
+ struct dtv_frontend_properties *p = &fe->dtv_property_cache;
+ struct fc0011_priv *priv = fe->tuner_priv;
+ int err;
+ unsigned int i, vco_retries;
+ u32 freq = p->frequency / 1000;
+ u32 bandwidth = p->bandwidth_hz / 1000;
+ u32 fvco, xin, xdiv, xdivr;
+ u16 frac;
+ u8 fa, fp, vco_sel, vco_cal;
+ u8 regs[FC11_NR_REGS] = { };
+
+ regs[FC11_REG_7] = 0x0F;
+ regs[FC11_REG_8] = 0x3E;
+ regs[FC11_REG_10] = 0xB8;
+ regs[FC11_REG_11] = 0x80;
+ regs[FC11_REG_RCCAL] = 0x04;
+ err = fc0011_writereg(priv, FC11_REG_7, regs[FC11_REG_7]);
+ err |= fc0011_writereg(priv, FC11_REG_8, regs[FC11_REG_8]);
+ err |= fc0011_writereg(priv, FC11_REG_10, regs[FC11_REG_10]);
+ err |= fc0011_writereg(priv, FC11_REG_11, regs[FC11_REG_11]);
+ err |= fc0011_writereg(priv, FC11_REG_RCCAL, regs[FC11_REG_RCCAL]);
+ if (err)
+ return -EIO;
+
+ /* Set VCO freq and VCO div */
+ if (freq < 54000) {
+ fvco = freq * 64;
+ regs[FC11_REG_VCO] = 0x82;
+ } else if (freq < 108000) {
+ fvco = freq * 32;
+ regs[FC11_REG_VCO] = 0x42;
+ } else if (freq < 216000) {
+ fvco = freq * 16;
+ regs[FC11_REG_VCO] = 0x22;
+ } else if (freq < 432000) {
+ fvco = freq * 8;
+ regs[FC11_REG_VCO] = 0x12;
+ } else {
+ fvco = freq * 4;
+ regs[FC11_REG_VCO] = 0x0A;
+ }
+
+ /* Calc XIN. The PLL reference frequency is 18 MHz. */
+ xdiv = fvco / 18000;
+ frac = fvco - xdiv * 18000;
+ frac = (frac << 15) / 18000;
+ if (frac >= 16384)
+ frac += 32786;
+ if (!frac)
+ xin = 0;
+ else if (frac < 511)
+ xin = 512;
+ else if (frac < 65026)
+ xin = frac;
+ else
+ xin = 65024;
+ regs[FC11_REG_XINHI] = xin >> 8;
+ regs[FC11_REG_XINLO] = xin;
+
+ /* Calc FP and FA */
+ xdivr = xdiv;
+ if (fvco - xdiv * 18000 >= 9000)
+ xdivr += 1; /* round */
+ fp = xdivr / 8;
+ fa = xdivr - fp * 8;
+ if (fa < 2) {
+ fp -= 1;
+ fa += 8;
+ }
+ if (fp > 0x1F) {
+ fp &= 0x1F;
+ fa &= 0xF;
+ }
+ if (fa >= fp) {
+ dev_warn(&priv->i2c->dev,
+ "fa %02X >= fp %02X, but trying to continue\n",
+ (unsigned int)(u8)fa, (unsigned int)(u8)fp);
+ }
+ regs[FC11_REG_FA] = fa;
+ regs[FC11_REG_FP] = fp;
+
+ /* Select bandwidth */
+ switch (bandwidth) {
+ case 8000:
+ break;
+ case 7000:
+ regs[FC11_REG_VCOSEL] |= FC11_VCOSEL_BW7M;
+ break;
+ default:
+ dev_warn(&priv->i2c->dev, "Unsupported bandwidth %u kHz. "
+ "Using 6000 kHz.\n",
+ bandwidth);
+ bandwidth = 6000;
+ /* fallthrough */
+ case 6000:
+ regs[FC11_REG_VCOSEL] |= FC11_VCOSEL_BW6M;
+ break;
+ }
+
+ /* Pre VCO select */
+ if (fvco < 2320000) {
+ vco_sel = 0;
+ regs[FC11_REG_VCOSEL] &= ~(FC11_VCOSEL_1 | FC11_VCOSEL_2);
+ } else if (fvco < 3080000) {
+ vco_sel = 1;
+ regs[FC11_REG_VCOSEL] &= ~(FC11_VCOSEL_1 | FC11_VCOSEL_2);
+ regs[FC11_REG_VCOSEL] |= FC11_VCOSEL_1;
+ } else {
+ vco_sel = 2;
+ regs[FC11_REG_VCOSEL] &= ~(FC11_VCOSEL_1 | FC11_VCOSEL_2);
+ regs[FC11_REG_VCOSEL] |= FC11_VCOSEL_2;
+ }
+
+ /* Fix for low freqs */
+ if (freq < 45000) {
+ regs[FC11_REG_FA] = 0x6;
+ regs[FC11_REG_FP] = 0x11;
+ }
+
+ /* Clock out fix */
+ regs[FC11_REG_VCOSEL] |= FC11_VCOSEL_CLKOUT;
+
+ /* Write the cached registers */
+ for (i = FC11_REG_FA; i <= FC11_REG_VCOSEL; i++) {
+ err = fc0011_writereg(priv, i, regs[i]);
+ if (err)
+ return err;
+ }
+
+ /* VCO calibration */
+ err = fc0011_vcocal_trigger(priv);
+ if (err)
+ return err;
+ err = fc0011_vcocal_read(priv, &vco_cal);
+ if (err)
+ return err;
+ vco_retries = 0;
+ while (!(vco_cal & FC11_VCOCAL_OK) && vco_retries < 3) {
+ /* Reset the tuner and try again */
+ err = fe->callback(priv->i2c, DVB_FRONTEND_COMPONENT_TUNER,
+ FC0011_FE_CALLBACK_RESET, priv->addr);
+ if (err) {
+ dev_err(&priv->i2c->dev, "Failed to reset tuner\n");
+ return err;
+ }
+ /* Reinit tuner config */
+ err = 0;
+ for (i = FC11_REG_FA; i <= FC11_REG_VCOSEL; i++)
+ err |= fc0011_writereg(priv, i, regs[i]);
+ err |= fc0011_writereg(priv, FC11_REG_7, regs[FC11_REG_7]);
+ err |= fc0011_writereg(priv, FC11_REG_8, regs[FC11_REG_8]);
+ err |= fc0011_writereg(priv, FC11_REG_10, regs[FC11_REG_10]);
+ err |= fc0011_writereg(priv, FC11_REG_11, regs[FC11_REG_11]);
+ err |= fc0011_writereg(priv, FC11_REG_RCCAL, regs[FC11_REG_RCCAL]);
+ if (err)
+ return -EIO;
+ /* VCO calibration */
+ err = fc0011_vcocal_trigger(priv);
+ if (err)
+ return err;
+ err = fc0011_vcocal_read(priv, &vco_cal);
+ if (err)
+ return err;
+ vco_retries++;
+ }
+ if (!(vco_cal & FC11_VCOCAL_OK)) {
+ dev_err(&priv->i2c->dev,
+ "Failed to read VCO calibration value (got %02X)\n",
+ (unsigned int)vco_cal);
+ return -EIO;
+ }
+ vco_cal &= FC11_VCOCAL_VALUEMASK;
+
+ switch (vco_sel) {
+ case 0:
+ if (vco_cal < 8) {
+ regs[FC11_REG_VCOSEL] &= ~(FC11_VCOSEL_1 | FC11_VCOSEL_2);
+ regs[FC11_REG_VCOSEL] |= FC11_VCOSEL_1;
+ err = fc0011_writereg(priv, FC11_REG_VCOSEL,
+ regs[FC11_REG_VCOSEL]);
+ if (err)
+ return err;
+ err = fc0011_vcocal_trigger(priv);
+ if (err)
+ return err;
+ } else {
+ regs[FC11_REG_VCOSEL] &= ~(FC11_VCOSEL_1 | FC11_VCOSEL_2);
+ err = fc0011_writereg(priv, FC11_REG_VCOSEL,
+ regs[FC11_REG_VCOSEL]);
+ if (err)
+ return err;
+ }
+ break;
+ case 1:
+ if (vco_cal < 5) {
+ regs[FC11_REG_VCOSEL] &= ~(FC11_VCOSEL_1 | FC11_VCOSEL_2);
+ regs[FC11_REG_VCOSEL] |= FC11_VCOSEL_2;
+ err = fc0011_writereg(priv, FC11_REG_VCOSEL,
+ regs[FC11_REG_VCOSEL]);
+ if (err)
+ return err;
+ err = fc0011_vcocal_trigger(priv);
+ if (err)
+ return err;
+ } else if (vco_cal <= 48) {
+ regs[FC11_REG_VCOSEL] &= ~(FC11_VCOSEL_1 | FC11_VCOSEL_2);
+ regs[FC11_REG_VCOSEL] |= FC11_VCOSEL_1;
+ err = fc0011_writereg(priv, FC11_REG_VCOSEL,
+ regs[FC11_REG_VCOSEL]);
+ if (err)
+ return err;
+ } else {
+ regs[FC11_REG_VCOSEL] &= ~(FC11_VCOSEL_1 | FC11_VCOSEL_2);
+ err = fc0011_writereg(priv, FC11_REG_VCOSEL,
+ regs[FC11_REG_VCOSEL]);
+ if (err)
+ return err;
+ err = fc0011_vcocal_trigger(priv);
+ if (err)
+ return err;
+ }
+ break;
+ case 2:
+ if (vco_cal > 53) {
+ regs[FC11_REG_VCOSEL] &= ~(FC11_VCOSEL_1 | FC11_VCOSEL_2);
+ regs[FC11_REG_VCOSEL] |= FC11_VCOSEL_1;
+ err = fc0011_writereg(priv, FC11_REG_VCOSEL,
+ regs[FC11_REG_VCOSEL]);
+ if (err)
+ return err;
+ err = fc0011_vcocal_trigger(priv);
+ if (err)
+ return err;
+ } else {
+ regs[FC11_REG_VCOSEL] &= ~(FC11_VCOSEL_1 | FC11_VCOSEL_2);
+ regs[FC11_REG_VCOSEL] |= FC11_VCOSEL_2;
+ err = fc0011_writereg(priv, FC11_REG_VCOSEL,
+ regs[FC11_REG_VCOSEL]);
+ if (err)
+ return err;
+ }
+ break;
+ }
+ err = fc0011_vcocal_read(priv, NULL);
+ if (err)
+ return err;
+ usleep_range(10000, 50000);
+
+ err = fc0011_readreg(priv, FC11_REG_RCCAL, &regs[FC11_REG_RCCAL]);
+ if (err)
+ return err;
+ regs[FC11_REG_RCCAL] |= FC11_RCCAL_FORCE;
+ err = fc0011_writereg(priv, FC11_REG_RCCAL, regs[FC11_REG_RCCAL]);
+ if (err)
+ return err;
+ err = fc0011_writereg(priv, FC11_REG_16, 0xB);
+ if (err)
+ return err;
+
+ dev_dbg(&priv->i2c->dev, "Tuned to "
+ "fa=%02X fp=%02X xin=%02X%02X vco=%02X vcosel=%02X "
+ "vcocal=%02X(%u) bw=%u\n",
+ (unsigned int)regs[FC11_REG_FA],
+ (unsigned int)regs[FC11_REG_FP],
+ (unsigned int)regs[FC11_REG_XINHI],
+ (unsigned int)regs[FC11_REG_XINLO],
+ (unsigned int)regs[FC11_REG_VCO],
+ (unsigned int)regs[FC11_REG_VCOSEL],
+ (unsigned int)vco_cal, vco_retries,
+ (unsigned int)bandwidth);
+
+ priv->frequency = p->frequency;
+ priv->bandwidth = p->bandwidth_hz;
+
+ return 0;
+}
+
+static int fc0011_get_frequency(struct dvb_frontend *fe, u32 *frequency)
+{
+ struct fc0011_priv *priv = fe->tuner_priv;
+
+ *frequency = priv->frequency;
+
+ return 0;
+}
+
+static int fc0011_get_if_frequency(struct dvb_frontend *fe, u32 *frequency)
+{
+ *frequency = 0;
+
+ return 0;
+}
+
+static int fc0011_get_bandwidth(struct dvb_frontend *fe, u32 *bandwidth)
+{
+ struct fc0011_priv *priv = fe->tuner_priv;
+
+ *bandwidth = priv->bandwidth;
+
+ return 0;
+}
+
+static const struct dvb_tuner_ops fc0011_tuner_ops = {
+ .info = {
+ .name = "Fitipower FC0011",
+
+ .frequency_min = 45000000,
+ .frequency_max = 1000000000,
+ },
+
+ .release = fc0011_release,
+ .init = fc0011_init,
+
+ .set_params = fc0011_set_params,
+
+ .get_frequency = fc0011_get_frequency,
+ .get_if_frequency = fc0011_get_if_frequency,
+ .get_bandwidth = fc0011_get_bandwidth,
+};
+
+struct dvb_frontend *fc0011_attach(struct dvb_frontend *fe,
+ struct i2c_adapter *i2c,
+ const struct fc0011_config *config)
+{
+ struct fc0011_priv *priv;
+
+ priv = kzalloc(sizeof(struct fc0011_priv), GFP_KERNEL);
+ if (!priv)
+ return NULL;
+
+ priv->i2c = i2c;
+ priv->addr = config->i2c_address;
+
+ fe->tuner_priv = priv;
+ fe->ops.tuner_ops = fc0011_tuner_ops;
+
+ dev_info(&priv->i2c->dev, "Fitipower FC0011 tuner attached\n");
+
+ return fe;
+}
+EXPORT_SYMBOL(fc0011_attach);
+
+MODULE_DESCRIPTION("Fitipower FC0011 silicon tuner driver");
+MODULE_AUTHOR("Michael Buesch <m@bues.ch>");
+MODULE_LICENSE("GPL");
generated by cgit v1.2.3 (git 2.0.4) at 2024-11-14 11:54:36 +0000