--- /dev/null
+/*
+ * Driver for Freescale MC44S803 Low Power CMOS Broadband Tuner
+ *
+ * Copyright (c) 2009 Jochen Friedrich <jochen@scram.de>
+ *
+ * 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 <linux/module.h>
+#include <linux/delay.h>
+#include <linux/dvb/frontend.h>
+#include <linux/i2c.h>
+
+#include "dvb_frontend.h"
+
+#include "mc44s803.h"
+#include "mc44s803_priv.h"
+
+#define mc_printk(level, format, arg...) \
+ printk(level "mc44s803: " format , ## arg)
+
+/* Writes a single register */
+static int mc44s803_writereg(struct mc44s803_priv *priv, u32 val)
+{
+ u8 buf[3];
+ struct i2c_msg msg = {
+ .addr = priv->cfg->i2c_address, .flags = 0, .buf = buf, .len = 3
+ };
+
+ buf[0] = (val & 0xff0000) >> 16;
+ buf[1] = (val & 0xff00) >> 8;
+ buf[2] = (val & 0xff);
+
+ if (i2c_transfer(priv->i2c, &msg, 1) != 1) {
+ mc_printk(KERN_WARNING, "I2C write failed\n");
+ return -EREMOTEIO;
+ }
+ return 0;
+}
+
+/* Reads a single register */
+static int mc44s803_readreg(struct mc44s803_priv *priv, u8 reg, u32 *val)
+{
+ u32 wval;
+ u8 buf[3];
+ int ret;
+ struct i2c_msg msg[] = {
+ { .addr = priv->cfg->i2c_address, .flags = I2C_M_RD,
+ .buf = buf, .len = 3 },
+ };
+
+ wval = MC44S803_REG_SM(MC44S803_REG_DATAREG, MC44S803_ADDR) |
+ MC44S803_REG_SM(reg, MC44S803_D);
+
+ ret = mc44s803_writereg(priv, wval);
+ if (ret)
+ return ret;
+
+ if (i2c_transfer(priv->i2c, msg, 1) != 1) {
+ mc_printk(KERN_WARNING, "I2C read failed\n");
+ return -EREMOTEIO;
+ }
+
+ *val = (buf[0] << 16) | (buf[1] << 8) | buf[2];
+
+ return 0;
+}
+
+static int mc44s803_release(struct dvb_frontend *fe)
+{
+ struct mc44s803_priv *priv = fe->tuner_priv;
+
+ fe->tuner_priv = NULL;
+ kfree(priv);
+
+ return 0;
+}
+
+static int mc44s803_init(struct dvb_frontend *fe)
+{
+ struct mc44s803_priv *priv = fe->tuner_priv;
+ u32 val;
+ int err;
+
+ if (fe->ops.i2c_gate_ctrl)
+ fe->ops.i2c_gate_ctrl(fe, 1);
+
+/* Reset chip */
+ val = MC44S803_REG_SM(MC44S803_REG_RESET, MC44S803_ADDR) |
+ MC44S803_REG_SM(1, MC44S803_RS);
+
+ err = mc44s803_writereg(priv, val);
+ if (err)
+ goto exit;
+
+ val = MC44S803_REG_SM(MC44S803_REG_RESET, MC44S803_ADDR);
+
+ err = mc44s803_writereg(priv, val);
+ if (err)
+ goto exit;
+
+/* Power Up and Start Osc */
+
+ val = MC44S803_REG_SM(MC44S803_REG_REFOSC, MC44S803_ADDR) |
+ MC44S803_REG_SM(0xC0, MC44S803_REFOSC) |
+ MC44S803_REG_SM(1, MC44S803_OSCSEL);
+
+ err = mc44s803_writereg(priv, val);
+ if (err)
+ goto exit;
+
+ val = MC44S803_REG_SM(MC44S803_REG_POWER, MC44S803_ADDR) |
+ MC44S803_REG_SM(0x200, MC44S803_POWER);
+
+ err = mc44s803_writereg(priv, val);
+ if (err)
+ goto exit;
+
+ msleep(10);
+
+ val = MC44S803_REG_SM(MC44S803_REG_REFOSC, MC44S803_ADDR) |
+ MC44S803_REG_SM(0x40, MC44S803_REFOSC) |
+ MC44S803_REG_SM(1, MC44S803_OSCSEL);
+
+ err = mc44s803_writereg(priv, val);
+ if (err)
+ goto exit;
+
+ msleep(20);
+
+/* Setup Mixer */
+
+ val = MC44S803_REG_SM(MC44S803_REG_MIXER, MC44S803_ADDR) |
+ MC44S803_REG_SM(1, MC44S803_TRI_STATE) |
+ MC44S803_REG_SM(0x7F, MC44S803_MIXER_RES);
+
+ err = mc44s803_writereg(priv, val);
+ if (err)
+ goto exit;
+
+/* Setup Cirquit Adjust */
+
+ val = MC44S803_REG_SM(MC44S803_REG_CIRCADJ, MC44S803_ADDR) |
+ MC44S803_REG_SM(1, MC44S803_G1) |
+ MC44S803_REG_SM(1, MC44S803_G3) |
+ MC44S803_REG_SM(0x3, MC44S803_CIRCADJ_RES) |
+ MC44S803_REG_SM(1, MC44S803_G6) |
+ MC44S803_REG_SM(priv->cfg->dig_out, MC44S803_S1) |
+ MC44S803_REG_SM(0x3, MC44S803_LP) |
+ MC44S803_REG_SM(1, MC44S803_CLRF) |
+ MC44S803_REG_SM(1, MC44S803_CLIF);
+
+ err = mc44s803_writereg(priv, val);
+ if (err)
+ goto exit;
+
+ val = MC44S803_REG_SM(MC44S803_REG_CIRCADJ, MC44S803_ADDR) |
+ MC44S803_REG_SM(1, MC44S803_G1) |
+ MC44S803_REG_SM(1, MC44S803_G3) |
+ MC44S803_REG_SM(0x3, MC44S803_CIRCADJ_RES) |
+ MC44S803_REG_SM(1, MC44S803_G6) |
+ MC44S803_REG_SM(priv->cfg->dig_out, MC44S803_S1) |
+ MC44S803_REG_SM(0x3, MC44S803_LP);
+
+ err = mc44s803_writereg(priv, val);
+ if (err)
+ goto exit;
+
+/* Setup Digtune */
+
+ val = MC44S803_REG_SM(MC44S803_REG_DIGTUNE, MC44S803_ADDR) |
+ MC44S803_REG_SM(3, MC44S803_XOD);
+
+ err = mc44s803_writereg(priv, val);
+ if (err)
+ goto exit;
+
+/* Setup AGC */
+
+ val = MC44S803_REG_SM(MC44S803_REG_LNAAGC, MC44S803_ADDR) |
+ MC44S803_REG_SM(1, MC44S803_AT1) |
+ MC44S803_REG_SM(1, MC44S803_AT2) |
+ MC44S803_REG_SM(1, MC44S803_AGC_AN_DIG) |
+ MC44S803_REG_SM(1, MC44S803_AGC_READ_EN) |
+ MC44S803_REG_SM(1, MC44S803_LNA0);
+
+ err = mc44s803_writereg(priv, val);
+ if (err)
+ goto exit;
+
+ if (fe->ops.i2c_gate_ctrl)
+ fe->ops.i2c_gate_ctrl(fe, 0);
+ return 0;
+
+exit:
+ if (fe->ops.i2c_gate_ctrl)
+ fe->ops.i2c_gate_ctrl(fe, 0);
+
+ mc_printk(KERN_WARNING, "I/O Error\n");
+ return err;
+}
+
+static int mc44s803_set_params(struct dvb_frontend *fe,
+ struct dvb_frontend_parameters *params)
+{
+ struct mc44s803_priv *priv = fe->tuner_priv;
+ u32 r1, r2, n1, n2, lo1, lo2, freq, val;
+ int err;
+
+ priv->frequency = params->frequency;
+
+ r1 = MC44S803_OSC / 1000000;
+ r2 = MC44S803_OSC / 100000;
+
+ n1 = (params->frequency + MC44S803_IF1 + 500000) / 1000000;
+ freq = MC44S803_OSC / r1 * n1;
+ lo1 = ((60 * n1) + (r1 / 2)) / r1;
+ freq = freq - params->frequency;
+
+ n2 = (freq - MC44S803_IF2 + 50000) / 100000;
+ lo2 = ((60 * n2) + (r2 / 2)) / r2;
+
+ if (fe->ops.i2c_gate_ctrl)
+ fe->ops.i2c_gate_ctrl(fe, 1);
+
+ val = MC44S803_REG_SM(MC44S803_REG_REFDIV, MC44S803_ADDR) |
+ MC44S803_REG_SM(r1-1, MC44S803_R1) |
+ MC44S803_REG_SM(r2-1, MC44S803_R2) |
+ MC44S803_REG_SM(1, MC44S803_REFBUF_EN);
+
+ err = mc44s803_writereg(priv, val);
+ if (err)
+ goto exit;
+
+ val = MC44S803_REG_SM(MC44S803_REG_LO1, MC44S803_ADDR) |
+ MC44S803_REG_SM(n1-2, MC44S803_LO1);
+
+ err = mc44s803_writereg(priv, val);
+ if (err)
+ goto exit;
+
+ val = MC44S803_REG_SM(MC44S803_REG_LO2, MC44S803_ADDR) |
+ MC44S803_REG_SM(n2-2, MC44S803_LO2);
+
+ err = mc44s803_writereg(priv, val);
+ if (err)
+ goto exit;
+
+ val = MC44S803_REG_SM(MC44S803_REG_DIGTUNE, MC44S803_ADDR) |
+ MC44S803_REG_SM(1, MC44S803_DA) |
+ MC44S803_REG_SM(lo1, MC44S803_LO_REF) |
+ MC44S803_REG_SM(1, MC44S803_AT);
+
+ err = mc44s803_writereg(priv, val);
+ if (err)
+ goto exit;
+
+ val = MC44S803_REG_SM(MC44S803_REG_DIGTUNE, MC44S803_ADDR) |
+ MC44S803_REG_SM(2, MC44S803_DA) |
+ MC44S803_REG_SM(lo2, MC44S803_LO_REF) |
+ MC44S803_REG_SM(1, MC44S803_AT);
+
+ err = mc44s803_writereg(priv, val);
+ if (err)
+ goto exit;
+
+ if (fe->ops.i2c_gate_ctrl)
+ fe->ops.i2c_gate_ctrl(fe, 0);
+
+ return 0;
+
+exit:
+ if (fe->ops.i2c_gate_ctrl)
+ fe->ops.i2c_gate_ctrl(fe, 0);
+
+ mc_printk(KERN_WARNING, "I/O Error\n");
+ return err;
+}
+
+static int mc44s803_get_frequency(struct dvb_frontend *fe, u32 *frequency)
+{
+ struct mc44s803_priv *priv = fe->tuner_priv;
+ *frequency = priv->frequency;
+ return 0;
+}
+
+static const struct dvb_tuner_ops mc44s803_tuner_ops = {
+ .info = {
+ .name = "Freescale MC44S803",
+ .frequency_min = 48000000,
+ .frequency_max = 1000000000,
+ .frequency_step = 100000,
+ },
+
+ .release = mc44s803_release,
+ .init = mc44s803_init,
+ .set_params = mc44s803_set_params,
+ .get_frequency = mc44s803_get_frequency
+};
+
+/* This functions tries to identify a MC44S803 tuner by reading the ID
+ register. This is hasty. */
+struct dvb_frontend *mc44s803_attach(struct dvb_frontend *fe,
+ struct i2c_adapter *i2c, struct mc44s803_config *cfg)
+{
+ struct mc44s803_priv *priv;
+ u32 reg;
+ u8 id;
+ int ret;
+
+ reg = 0;
+
+ priv = kzalloc(sizeof(struct mc44s803_priv), GFP_KERNEL);
+ if (priv == NULL)
+ return NULL;
+
+ priv->cfg = cfg;
+ priv->i2c = i2c;
+ priv->fe = fe;
+
+ if (fe->ops.i2c_gate_ctrl)
+ fe->ops.i2c_gate_ctrl(fe, 1); /* open i2c_gate */
+
+ ret = mc44s803_readreg(priv, MC44S803_REG_ID, ®);
+ if (ret)
+ goto error;
+
+ id = MC44S803_REG_MS(reg, MC44S803_ID);
+
+ if (id != 0x14) {
+ mc_printk(KERN_ERR, "unsupported ID "
+ "(%x should be 0x14)\n", id);
+ goto error;
+ }
+
+ mc_printk(KERN_INFO, "successfully identified (ID = %x)\n", id);
+ memcpy(&fe->ops.tuner_ops, &mc44s803_tuner_ops,
+ sizeof(struct dvb_tuner_ops));
+
+ fe->tuner_priv = priv;
+
+ if (fe->ops.i2c_gate_ctrl)
+ fe->ops.i2c_gate_ctrl(fe, 0); /* close i2c_gate */
+
+ return fe;
+
+error:
+ if (fe->ops.i2c_gate_ctrl)
+ fe->ops.i2c_gate_ctrl(fe, 0); /* close i2c_gate */
+
+ kfree(priv);
+ return NULL;
+}
+EXPORT_SYMBOL(mc44s803_attach);
+
+MODULE_AUTHOR("Jochen Friedrich");
+MODULE_DESCRIPTION("Freescale MC44S803 silicon tuner driver");
+MODULE_LICENSE("GPL");
--- /dev/null
+/*
+ * Driver for Freescale MC44S803 Low Power CMOS Broadband Tuner
+ *
+ * Copyright (c) 2009 Jochen Friedrich <jochen@scram.de>
+ *
+ * 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 MC44S803_PRIV_H
+#define MC44S803_PRIV_H
+
+/* This driver is based on the information available in the datasheet
+ http://www.freescale.com/files/rf_if/doc/data_sheet/MC44S803.pdf
+
+ SPI or I2C Address : 0xc0-0xc6
+
+ Reg.No | Function
+ -------------------------------------------
+ 00 | Power Down
+ 01 | Reference Oszillator
+ 02 | Reference Dividers
+ 03 | Mixer and Reference Buffer
+ 04 | Reset/Serial Out
+ 05 | LO 1
+ 06 | LO 2
+ 07 | Circuit Adjust
+ 08 | Test
+ 09 | Digital Tune
+ 0A | LNA AGC
+ 0B | Data Register Address
+ 0C | Regulator Test
+ 0D | VCO Test
+ 0E | LNA Gain/Input Power
+ 0F | ID Bits
+
+*/
+
+#define MC44S803_OSC 26000000 /* 26 MHz */
+#define MC44S803_IF1 1086000000 /* 1086 MHz */
+#define MC44S803_IF2 36125000 /* 36.125 MHz */
+
+#define MC44S803_REG_POWER 0
+#define MC44S803_REG_REFOSC 1
+#define MC44S803_REG_REFDIV 2
+#define MC44S803_REG_MIXER 3
+#define MC44S803_REG_RESET 4
+#define MC44S803_REG_LO1 5
+#define MC44S803_REG_LO2 6
+#define MC44S803_REG_CIRCADJ 7
+#define MC44S803_REG_TEST 8
+#define MC44S803_REG_DIGTUNE 9
+#define MC44S803_REG_LNAAGC 0x0A
+#define MC44S803_REG_DATAREG 0x0B
+#define MC44S803_REG_REGTEST 0x0C
+#define MC44S803_REG_VCOTEST 0x0D
+#define MC44S803_REG_LNAGAIN 0x0E
+#define MC44S803_REG_ID 0x0F
+
+/* Register definitions */
+#define MC44S803_ADDR 0x0F
+#define MC44S803_ADDR_S 0
+/* REG_POWER */
+#define MC44S803_POWER 0xFFFFF0
+#define MC44S803_POWER_S 4
+/* REG_REFOSC */
+#define MC44S803_REFOSC 0x1FF0
+#define MC44S803_REFOSC_S 4
+#define MC44S803_OSCSEL 0x2000
+#define MC44S803_OSCSEL_S 13
+/* REG_REFDIV */
+#define MC44S803_R2 0x1FF0
+#define MC44S803_R2_S 4
+#define MC44S803_REFBUF_EN 0x2000
+#define MC44S803_REFBUF_EN_S 13
+#define MC44S803_R1 0x7C000
+#define MC44S803_R1_S 14
+/* REG_MIXER */
+#define MC44S803_R3 0x70
+#define MC44S803_R3_S 4
+#define MC44S803_MUX3 0x80
+#define MC44S803_MUX3_S 7
+#define MC44S803_MUX4 0x100
+#define MC44S803_MUX4_S 8
+#define MC44S803_OSC_SCR 0x200
+#define MC44S803_OSC_SCR_S 9
+#define MC44S803_TRI_STATE 0x400
+#define MC44S803_TRI_STATE_S 10
+#define MC44S803_BUF_GAIN 0x800
+#define MC44S803_BUF_GAIN_S 11
+#define MC44S803_BUF_IO 0x1000
+#define MC44S803_BUF_IO_S 12
+#define MC44S803_MIXER_RES 0xFE000
+#define MC44S803_MIXER_RES_S 13
+/* REG_RESET */
+#define MC44S803_RS 0x10
+#define MC44S803_RS_S 4
+#define MC44S803_SO 0x20
+#define MC44S803_SO_S 5
+/* REG_LO1 */
+#define MC44S803_LO1 0xFFF0
+#define MC44S803_LO1_S 4
+/* REG_LO2 */
+#define MC44S803_LO2 0x7FFF0
+#define MC44S803_LO2_S 4
+/* REG_CIRCADJ */
+#define MC44S803_G1 0x20
+#define MC44S803_G1_S 5
+#define MC44S803_G3 0x80
+#define MC44S803_G3_S 7
+#define MC44S803_CIRCADJ_RES 0x300
+#define MC44S803_CIRCADJ_RES_S 8
+#define MC44S803_G6 0x400
+#define MC44S803_G6_S 10
+#define MC44S803_G7 0x800
+#define MC44S803_G7_S 11
+#define MC44S803_S1 0x1000
+#define MC44S803_S1_S 12
+#define MC44S803_LP 0x7E000
+#define MC44S803_LP_S 13
+#define MC44S803_CLRF 0x80000
+#define MC44S803_CLRF_S 19
+#define MC44S803_CLIF 0x100000
+#define MC44S803_CLIF_S 20
+/* REG_TEST */
+/* REG_DIGTUNE */
+#define MC44S803_DA 0xF0
+#define MC44S803_DA_S 4
+#define MC44S803_XOD 0x300
+#define MC44S803_XOD_S 8
+#define MC44S803_RST 0x10000
+#define MC44S803_RST_S 16
+#define MC44S803_LO_REF 0x1FFF00
+#define MC44S803_LO_REF_S 8
+#define MC44S803_AT 0x200000
+#define MC44S803_AT_S 21
+#define MC44S803_MT 0x400000
+#define MC44S803_MT_S 22
+/* REG_LNAAGC */
+#define MC44S803_G 0x3F0
+#define MC44S803_G_S 4
+#define MC44S803_AT1 0x400
+#define MC44S803_AT1_S 10
+#define MC44S803_AT2 0x800
+#define MC44S803_AT2_S 11
+#define MC44S803_HL_GR_EN 0x8000
+#define MC44S803_HL_GR_EN_S 15
+#define MC44S803_AGC_AN_DIG 0x10000
+#define MC44S803_AGC_AN_DIG_S 16
+#define MC44S803_ATTEN_EN 0x20000
+#define MC44S803_ATTEN_EN_S 17
+#define MC44S803_AGC_READ_EN 0x40000
+#define MC44S803_AGC_READ_EN_S 18
+#define MC44S803_LNA0 0x80000
+#define MC44S803_LNA0_S 19
+#define MC44S803_AGC_SEL 0x100000
+#define MC44S803_AGC_SEL_S 20
+#define MC44S803_AT0 0x200000
+#define MC44S803_AT0_S 21
+#define MC44S803_B 0xC00000
+#define MC44S803_B_S 22
+/* REG_DATAREG */
+#define MC44S803_D 0xF0
+#define MC44S803_D_S 4
+/* REG_REGTEST */
+/* REG_VCOTEST */
+/* REG_LNAGAIN */
+#define MC44S803_IF_PWR 0x700
+#define MC44S803_IF_PWR_S 8
+#define MC44S803_RF_PWR 0x3800
+#define MC44S803_RF_PWR_S 11
+#define MC44S803_LNA_GAIN 0xFC000
+#define MC44S803_LNA_GAIN_S 14
+/* REG_ID */
+#define MC44S803_ID 0x3E00
+#define MC44S803_ID_S 9
+
+/* Some macros to read/write fields */
+
+/* First shift, then mask */
+#define MC44S803_REG_SM(_val, _reg) \
+ (((_val) << _reg##_S) & (_reg))
+
+/* First mask, then shift */
+#define MC44S803_REG_MS(_val, _reg) \
+ (((_val) & (_reg)) >> _reg##_S)
+
+struct mc44s803_priv {
+ struct mc44s803_config *cfg;
+ struct i2c_adapter *i2c;
+ struct dvb_frontend *fe;
+
+ u32 frequency;
+};
+
+#endif
projects / GitHub / LineageOS / android_kernel_samsung_universal7580.git / commitdiff