--- /dev/null
+/*
+ * horus3a.h
+ *
+ * Sony Horus3A DVB-S/S2 tuner driver
+ *
+ * Copyright 2012 Sony Corporation
+ * Copyright (C) 2014 NetUP Inc.
+ * Copyright (C) 2014 Sergey Kozlov <serjk@netup.ru>
+ * Copyright (C) 2014 Abylay Ospan <aospan@netup.ru>
+ *
+ * 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.
+ */
+
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/dvb/frontend.h>
+#include <linux/types.h>
+#include "horus3a.h"
+#include "dvb_frontend.h"
+
+enum horus3a_state {
+ STATE_UNKNOWN,
+ STATE_SLEEP,
+ STATE_ACTIVE
+};
+
+struct horus3a_priv {
+ u32 frequency;
+ u8 i2c_address;
+ struct i2c_adapter *i2c;
+ enum horus3a_state state;
+ void *set_tuner_data;
+ int (*set_tuner)(void *, int);
+};
+
+static void horus3a_i2c_debug(struct horus3a_priv *priv,
+ u8 reg, u8 write, const u8 *data, u32 len)
+{
+ dev_dbg(&priv->i2c->dev, "horus3a: I2C %s reg 0x%02x size %d\n",
+ (write == 0 ? "read" : "write"), reg, len);
+ print_hex_dump_bytes("horus3a: I2C data: ",
+ DUMP_PREFIX_OFFSET, data, len);
+}
+
+static int horus3a_write_regs(struct horus3a_priv *priv,
+ u8 reg, const u8 *data, u32 len)
+{
+ int ret;
+ u8 buf[len+1];
+ struct i2c_msg msg[1] = {
+ {
+ .addr = priv->i2c_address,
+ .flags = 0,
+ .len = sizeof(buf),
+ .buf = buf,
+ }
+ };
+
+ horus3a_i2c_debug(priv, reg, 1, data, len);
+ buf[0] = reg;
+ memcpy(&buf[1], data, len);
+ ret = i2c_transfer(priv->i2c, msg, 1);
+ if (ret >= 0 && ret != 1)
+ ret = -EREMOTEIO;
+ if (ret < 0) {
+ dev_warn(&priv->i2c->dev,
+ "%s: i2c wr failed=%d reg=%02x len=%d\n",
+ KBUILD_MODNAME, ret, reg, len);
+ return ret;
+ }
+ return 0;
+}
+
+static int horus3a_write_reg(struct horus3a_priv *priv, u8 reg, u8 val)
+{
+ return horus3a_write_regs(priv, reg, &val, 1);
+}
+
+static int horus3a_enter_power_save(struct horus3a_priv *priv)
+{
+ u8 data[2];
+
+ dev_dbg(&priv->i2c->dev, "%s()\n", __func__);
+ if (priv->state == STATE_SLEEP)
+ return 0;
+ /* IQ Generator disable */
+ horus3a_write_reg(priv, 0x2a, 0x79);
+ /* MDIV_EN = 0 */
+ horus3a_write_reg(priv, 0x29, 0x70);
+ /* VCO disable preparation */
+ horus3a_write_reg(priv, 0x28, 0x3e);
+ /* VCO buffer disable */
+ horus3a_write_reg(priv, 0x2a, 0x19);
+ /* VCO calibration disable */
+ horus3a_write_reg(priv, 0x1c, 0x00);
+ /* Power save setting (xtal is not stopped) */
+ data[0] = 0xC0;
+ /* LNA is Disabled */
+ data[1] = 0xA7;
+ /* 0x11 - 0x12 */
+ horus3a_write_regs(priv, 0x11, data, sizeof(data));
+ priv->state = STATE_SLEEP;
+ return 0;
+}
+
+static int horus3a_leave_power_save(struct horus3a_priv *priv)
+{
+ u8 data[2];
+
+ dev_dbg(&priv->i2c->dev, "%s()\n", __func__);
+ if (priv->state == STATE_ACTIVE)
+ return 0;
+ /* Leave power save */
+ data[0] = 0x00;
+ /* LNA is Disabled */
+ data[1] = 0xa7;
+ /* 0x11 - 0x12 */
+ horus3a_write_regs(priv, 0x11, data, sizeof(data));
+ /* VCO buffer enable */
+ horus3a_write_reg(priv, 0x2a, 0x79);
+ /* VCO calibration enable */
+ horus3a_write_reg(priv, 0x1c, 0xc0);
+ /* MDIV_EN = 1 */
+ horus3a_write_reg(priv, 0x29, 0x71);
+ usleep_range(5000, 7000);
+ priv->state = STATE_ACTIVE;
+ return 0;
+}
+
+static int horus3a_init(struct dvb_frontend *fe)
+{
+ struct horus3a_priv *priv = fe->tuner_priv;
+
+ dev_dbg(&priv->i2c->dev, "%s()\n", __func__);
+ return 0;
+}
+
+static int horus3a_release(struct dvb_frontend *fe)
+{
+ struct horus3a_priv *priv = fe->tuner_priv;
+
+ dev_dbg(&priv->i2c->dev, "%s()\n", __func__);
+ kfree(fe->tuner_priv);
+ fe->tuner_priv = NULL;
+ return 0;
+}
+
+static int horus3a_sleep(struct dvb_frontend *fe)
+{
+ struct horus3a_priv *priv = fe->tuner_priv;
+
+ dev_dbg(&priv->i2c->dev, "%s()\n", __func__);
+ horus3a_enter_power_save(priv);
+ return 0;
+}
+
+static int horus3a_set_params(struct dvb_frontend *fe)
+{
+ struct dtv_frontend_properties *p = &fe->dtv_property_cache;
+ struct horus3a_priv *priv = fe->tuner_priv;
+ u32 frequency = p->frequency;
+ u32 symbol_rate = p->symbol_rate/1000;
+ u8 mixdiv = 0;
+ u8 mdiv = 0;
+ u32 ms = 0;
+ u8 f_ctl = 0;
+ u8 g_ctl = 0;
+ u8 fc_lpf = 0;
+ u8 data[5];
+
+ dev_dbg(&priv->i2c->dev, "%s(): frequency %dkHz symbol_rate %dksps\n",
+ __func__, frequency, symbol_rate);
+ if (priv->set_tuner)
+ priv->set_tuner(priv->set_tuner_data, 0);
+ if (priv->state == STATE_SLEEP)
+ horus3a_leave_power_save(priv);
+
+ /* frequency should be X MHz (X : integer) */
+ frequency = DIV_ROUND_CLOSEST(frequency, 1000) * 1000;
+ if (frequency <= 1155000) {
+ mixdiv = 4;
+ mdiv = 1;
+ } else {
+ mixdiv = 2;
+ mdiv = 0;
+ }
+ /* Assumed that fREF == 1MHz (1000kHz) */
+ ms = DIV_ROUND_CLOSEST((frequency * mixdiv) / 2, 1000);
+ if (ms > 0x7FFF) { /* 15 bit */
+ dev_err(&priv->i2c->dev, "horus3a: invalid frequency %d\n",
+ frequency);
+ return -EINVAL;
+ }
+ if (frequency < 975000) {
+ /* F_CTL=11100 G_CTL=001 */
+ f_ctl = 0x1C;
+ g_ctl = 0x01;
+ } else if (frequency < 1050000) {
+ /* F_CTL=11000 G_CTL=010 */
+ f_ctl = 0x18;
+ g_ctl = 0x02;
+ } else if (frequency < 1150000) {
+ /* F_CTL=10100 G_CTL=010 */
+ f_ctl = 0x14;
+ g_ctl = 0x02;
+ } else if (frequency < 1250000) {
+ /* F_CTL=10000 G_CTL=011 */
+ f_ctl = 0x10;
+ g_ctl = 0x03;
+ } else if (frequency < 1350000) {
+ /* F_CTL=01100 G_CTL=100 */
+ f_ctl = 0x0C;
+ g_ctl = 0x04;
+ } else if (frequency < 1450000) {
+ /* F_CTL=01010 G_CTL=100 */
+ f_ctl = 0x0A;
+ g_ctl = 0x04;
+ } else if (frequency < 1600000) {
+ /* F_CTL=00111 G_CTL=101 */
+ f_ctl = 0x07;
+ g_ctl = 0x05;
+ } else if (frequency < 1800000) {
+ /* F_CTL=00100 G_CTL=010 */
+ f_ctl = 0x04;
+ g_ctl = 0x02;
+ } else if (frequency < 2000000) {
+ /* F_CTL=00010 G_CTL=001 */
+ f_ctl = 0x02;
+ g_ctl = 0x01;
+ } else {
+ /* F_CTL=00000 G_CTL=000 */
+ f_ctl = 0x00;
+ g_ctl = 0x00;
+ }
+ /* LPF cutoff frequency setting */
+ if (p->delivery_system == SYS_DVBS) {
+ /*
+ * rolloff = 0.35
+ * SR <= 4.3
+ * fc_lpf = 5
+ * 4.3 < SR <= 10
+ * fc_lpf = SR * (1 + rolloff) / 2 + SR / 2 =
+ * SR * 1.175 = SR * (47/40)
+ * 10 < SR
+ * fc_lpf = SR * (1 + rolloff) / 2 + 5 =
+ * SR * 0.675 + 5 = SR * (27/40) + 5
+ * NOTE: The result should be round up.
+ */
+ if (symbol_rate <= 4300)
+ fc_lpf = 5;
+ else if (symbol_rate <= 10000)
+ fc_lpf = (u8)DIV_ROUND_UP(symbol_rate * 47, 40000);
+ else
+ fc_lpf = (u8)DIV_ROUND_UP(symbol_rate * 27, 40000) + 5;
+ /* 5 <= fc_lpf <= 36 */
+ if (fc_lpf > 36)
+ fc_lpf = 36;
+ } else if (p->delivery_system == SYS_DVBS2) {
+ int rolloff;
+
+ switch (p->rolloff) {
+ case ROLLOFF_35:
+ rolloff = 35;
+ break;
+ case ROLLOFF_25:
+ rolloff = 25;
+ break;
+ case ROLLOFF_20:
+ rolloff = 20;
+ break;
+ case ROLLOFF_AUTO:
+ dev_err(&priv->i2c->dev,
+ "horus3a: auto roll-off is not supported\n");
+ return -EINVAL;
+ }
+ /*
+ * SR <= 4.5:
+ * fc_lpf = 5
+ * 4.5 < SR <= 10:
+ * fc_lpf = SR * (1 + rolloff) / 2 + SR / 2
+ * 10 < SR:
+ * fc_lpf = SR * (1 + rolloff) / 2 + 5
+ * NOTE: The result should be round up.
+ */
+ if (symbol_rate <= 4500)
+ fc_lpf = 5;
+ else if (symbol_rate <= 10000)
+ fc_lpf = (u8)DIV_ROUND_UP(
+ symbol_rate * (200 + rolloff), 200000);
+ else
+ fc_lpf = (u8)DIV_ROUND_UP(
+ symbol_rate * (100 + rolloff), 200000) + 5;
+ /* 5 <= fc_lpf <= 36 is valid */
+ if (fc_lpf > 36)
+ fc_lpf = 36;
+ } else {
+ dev_err(&priv->i2c->dev,
+ "horus3a: invalid delivery system %d\n",
+ p->delivery_system);
+ return -EINVAL;
+ }
+ /* 0x00 - 0x04 */
+ data[0] = (u8)((ms >> 7) & 0xFF);
+ data[1] = (u8)((ms << 1) & 0xFF);
+ data[2] = 0x00;
+ data[3] = 0x00;
+ data[4] = (u8)(mdiv << 7);
+ horus3a_write_regs(priv, 0x00, data, sizeof(data));
+ /* Write G_CTL, F_CTL */
+ horus3a_write_reg(priv, 0x09, (u8)((g_ctl << 5) | f_ctl));
+ /* Write LPF cutoff frequency */
+ horus3a_write_reg(priv, 0x37, (u8)(0x80 | (fc_lpf << 1)));
+ /* Start Calibration */
+ horus3a_write_reg(priv, 0x05, 0x80);
+ /* IQ Generator enable */
+ horus3a_write_reg(priv, 0x2a, 0x7b);
+ /* tuner stabilization time */
+ msleep(60);
+ /* Store tuned frequency to the struct */
+ priv->frequency = ms * 2 * 1000 / mixdiv;
+ return 0;
+}
+
+static int horus3a_get_frequency(struct dvb_frontend *fe, u32 *frequency)
+{
+ struct horus3a_priv *priv = fe->tuner_priv;
+
+ *frequency = priv->frequency;
+ return 0;
+}
+
+static struct dvb_tuner_ops horus3a_tuner_ops = {
+ .info = {
+ .name = "Sony Horus3a",
+ .frequency_min = 950000,
+ .frequency_max = 2150000,
+ .frequency_step = 1000,
+ },
+ .init = horus3a_init,
+ .release = horus3a_release,
+ .sleep = horus3a_sleep,
+ .set_params = horus3a_set_params,
+ .get_frequency = horus3a_get_frequency,
+};
+
+struct dvb_frontend *horus3a_attach(struct dvb_frontend *fe,
+ const struct horus3a_config *config,
+ struct i2c_adapter *i2c)
+{
+ u8 buf[3], val;
+ struct horus3a_priv *priv = NULL;
+
+ priv = kzalloc(sizeof(struct horus3a_priv), GFP_KERNEL);
+ if (priv == NULL)
+ return NULL;
+ priv->i2c_address = (config->i2c_address >> 1);
+ priv->i2c = i2c;
+ priv->set_tuner_data = config->set_tuner_priv;
+ priv->set_tuner = config->set_tuner_callback;
+
+ if (fe->ops.i2c_gate_ctrl)
+ fe->ops.i2c_gate_ctrl(fe, 1);
+
+ /* wait 4ms after power on */
+ usleep_range(4000, 6000);
+ /* IQ Generator disable */
+ horus3a_write_reg(priv, 0x2a, 0x79);
+ /* REF_R = Xtal Frequency */
+ buf[0] = config->xtal_freq_mhz;
+ buf[1] = config->xtal_freq_mhz;
+ buf[2] = 0;
+ /* 0x6 - 0x8 */
+ horus3a_write_regs(priv, 0x6, buf, 3);
+ /* IQ Out = Single Ended */
+ horus3a_write_reg(priv, 0x0a, 0x40);
+ switch (config->xtal_freq_mhz) {
+ case 27:
+ val = 0x1f;
+ break;
+ case 24:
+ val = 0x10;
+ break;
+ case 16:
+ val = 0xc;
+ break;
+ default:
+ val = 0;
+ dev_warn(&priv->i2c->dev,
+ "horus3a: invalid xtal frequency %dMHz\n",
+ config->xtal_freq_mhz);
+ break;
+ }
+ val <<= 2;
+ horus3a_write_reg(priv, 0x0e, val);
+ horus3a_enter_power_save(priv);
+ usleep_range(3000, 5000);
+
+ if (fe->ops.i2c_gate_ctrl)
+ fe->ops.i2c_gate_ctrl(fe, 0);
+
+ memcpy(&fe->ops.tuner_ops, &horus3a_tuner_ops,
+ sizeof(struct dvb_tuner_ops));
+ fe->tuner_priv = priv;
+ dev_info(&priv->i2c->dev,
+ "Sony HORUS3A attached on addr=%x at I2C adapter %p\n",
+ priv->i2c_address, priv->i2c);
+ return fe;
+}
+EXPORT_SYMBOL(horus3a_attach);
+
+MODULE_DESCRIPTION("Sony HORUS3A sattelite tuner driver");
+MODULE_AUTHOR("Sergey Kozlov <serjk@netup.ru>");
+MODULE_LICENSE("GPL");
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