[media] ds3000: remove ts2020 tuner related code

remove ts2020 tuner related code from ds3000 driver
prepare ds3000 driver for using external tuner driver

Signed-off-by: Konstantin Dimitrov <kosio.dimitrov@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

2 files changed, 27 insertions, 223 deletions

diff --git a/drivers/media/dvb-frontends/ds3000.c b/drivers/media/dvb-frontends/ds3000.c
index 60a529e3833f..cd84fbd78a5b 100644
--- a/drivers/media/dvb-frontends/ds3000.c
+++ b/drivers/media/dvb-frontends/ds3000.c
@@ -1,8 +1,8 @@
 /*
-    Montage Technology DS3000/TS2020 - DVBS/S2 Demodulator/Tuner driver
-    Copyright (C) 2009 Konstantin Dimitrov <kosio.dimitrov@gmail.com>
+    Montage Technology DS3000 - DVBS/S2 Demodulator driver
+    Copyright (C) 2009-2012 Konstantin Dimitrov <kosio.dimitrov@gmail.com>
 
-    Copyright (C) 2009 TurboSight.com
+    Copyright (C) 2009-2012 TurboSight.com
 
     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
@@ -42,7 +42,6 @@ static int debug;
 #define DS3000_DEFAULT_FIRMWARE "dvb-fe-ds3000.fw"
 
 #define DS3000_SAMPLE_RATE 96000 /* in kHz */
-#define DS3000_XTAL_FREQ   27000 /* in kHz */
 
 /* Register values to initialise the demod in DVB-S mode */
 static u8 ds3000_dvbs_init_tab[] = {
@@ -256,22 +255,14 @@ static int ds3000_writereg(struct ds3000_state *state, int reg, int data)
         return 0;
 }
 
-static int ds3000_tuner_writereg(struct ds3000_state *state, int reg, int data)
+static int ds3000_i2c_gate_ctrl(struct dvb_frontend *fe, int enable)
 {
-        u8 buf[] = { reg, data };
-        struct i2c_msg msg = { .addr = 0x60,
-                .flags = 0, .buf = buf, .len = 2 };
-        int err;
-
-        dprintk("%s: write reg 0x%02x, value 0x%02x\n", __func__, reg, data);
+        struct ds3000_state *state = fe->demodulator_priv;
 
-        ds3000_writereg(state, 0x03, 0x11);
-        err = i2c_transfer(state->i2c, &msg, 1);
-        if (err != 1) {
-                printk("%s: writereg error(err == %i, reg == 0x%02x,"
-                         " value == 0x%02x)\n", __func__, err, reg, data);
-                return -EREMOTEIO;
-        }
+        if (enable)
+                ds3000_writereg(state, 0x03, 0x12);
+        else
+                ds3000_writereg(state, 0x03, 0x02);
 
         return 0;
 }
@@ -348,38 +339,6 @@ static int ds3000_readreg(struct ds3000_state *state, u8 reg)
         return b1[0];
 }
 
-static int ds3000_tuner_readreg(struct ds3000_state *state, u8 reg)
-{
-        int ret;
-        u8 b0[] = { reg };
-        u8 b1[] = { 0 };
-        struct i2c_msg msg[] = {
-                {
-                        .addr = 0x60,
-                        .flags = 0,
-                        .buf = b0,
-                        .len = 1
-                }, {
-                        .addr = 0x60,
-                        .flags = I2C_M_RD,
-                        .buf = b1,
-                        .len = 1
-                }
-        };
-
-        ds3000_writereg(state, 0x03, 0x12);
-        ret = i2c_transfer(state->i2c, msg, 2);
-
-        if (ret != 2) {
-                printk(KERN_ERR "%s: reg=0x%x(error=%d)\n", __func__, reg, ret);
-                return ret;
-        }
-
-        dprintk("%s: read reg 0x%02x, value 0x%02x\n", __func__, reg, b1[0]);
-
-        return b1[0];
-}
-
 static int ds3000_load_firmware(struct dvb_frontend *fe,
                                         const struct firmware *fw);
 
@@ -568,37 +527,6 @@ static int ds3000_read_ber(struct dvb_frontend *fe, u32* ber)
         return 0;
 }
 
-/* read TS2020 signal strength */
-static int ds3000_read_signal_strength(struct dvb_frontend *fe,
-                                                u16 *signal_strength)
-{
-        struct ds3000_state *state = fe->demodulator_priv;
-        u16 sig_reading, sig_strength;
-        u8 rfgain, bbgain;
-
-        dprintk("%s()\n", __func__);
-
-        rfgain = ds3000_tuner_readreg(state, 0x3d) & 0x1f;
-        bbgain = ds3000_tuner_readreg(state, 0x21) & 0x1f;
-
-        if (rfgain > 15)
-                rfgain = 15;
-        if (bbgain > 13)
-                bbgain = 13;
-
-        sig_reading = rfgain * 2 + bbgain * 3;
-
-        sig_strength = 40 + (64 - sig_reading) * 50 / 64 ;
-
-        /* cook the value to be suitable for szap-s2 human readable output */
-        *signal_strength = sig_strength * 1000;
-
-        dprintk("%s: raw / cooked = 0x%04x / 0x%04x\n", __func__,
-                        sig_reading, *signal_strength);
-
-        return 0;
-}
-
 /* calculate DS3000 snr value in dB */
 static int ds3000_read_snr(struct dvb_frontend *fe, u16 *snr)
 {
@@ -952,133 +880,17 @@ static int ds3000_set_frontend(struct dvb_frontend *fe)
 
         int i;
         fe_status_t status;
-        u8 mlpf, mlpf_new, mlpf_max, mlpf_min, nlpf, div4;
         s32 offset_khz;
-        u16 value, ndiv;
-        u32 f3db;
+        u32 frequency;
+        u16 value;
 
         dprintk("%s() ", __func__);
 
         if (state->config->set_ts_params)
                 state->config->set_ts_params(fe, 0);
         /* Tune */
-        /* unknown */
-        ds3000_tuner_writereg(state, 0x07, 0x02);
-        ds3000_tuner_writereg(state, 0x10, 0x00);
-        ds3000_tuner_writereg(state, 0x60, 0x79);
-        ds3000_tuner_writereg(state, 0x08, 0x01);
-        ds3000_tuner_writereg(state, 0x00, 0x01);
-        div4 = 0;
-
-        /* calculate and set freq divider */
-        if (c->frequency < 1146000) {
-                ds3000_tuner_writereg(state, 0x10, 0x11);
-                div4 = 1;
-                ndiv = ((c->frequency * (6 + 8) * 4) +
-                                (DS3000_XTAL_FREQ / 2)) /
-                                DS3000_XTAL_FREQ - 1024;
-        } else {
-                ds3000_tuner_writereg(state, 0x10, 0x01);
-                ndiv = ((c->frequency * (6 + 8) * 2) +
-                                (DS3000_XTAL_FREQ / 2)) /
-                                DS3000_XTAL_FREQ - 1024;
-        }
-
-        ds3000_tuner_writereg(state, 0x01, (ndiv & 0x0f00) >> 8);
-        ds3000_tuner_writereg(state, 0x02, ndiv & 0x00ff);
-
-        /* set pll */
-        ds3000_tuner_writereg(state, 0x03, 0x06);
-        ds3000_tuner_writereg(state, 0x51, 0x0f);
-        ds3000_tuner_writereg(state, 0x51, 0x1f);
-        ds3000_tuner_writereg(state, 0x50, 0x10);
-        ds3000_tuner_writereg(state, 0x50, 0x00);
-        msleep(5);
-
-        /* unknown */
-        ds3000_tuner_writereg(state, 0x51, 0x17);
-        ds3000_tuner_writereg(state, 0x51, 0x1f);
-        ds3000_tuner_writereg(state, 0x50, 0x08);
-        ds3000_tuner_writereg(state, 0x50, 0x00);
-        msleep(5);
-
-        value = ds3000_tuner_readreg(state, 0x3d);
-        value &= 0x0f;
-        if ((value > 4) && (value < 15)) {
-                value -= 3;
-                if (value < 4)
-                        value = 4;
-                value = ((value << 3) | 0x01) & 0x79;
-        }
-
-        ds3000_tuner_writereg(state, 0x60, value);
-        ds3000_tuner_writereg(state, 0x51, 0x17);
-        ds3000_tuner_writereg(state, 0x51, 0x1f);
-        ds3000_tuner_writereg(state, 0x50, 0x08);
-        ds3000_tuner_writereg(state, 0x50, 0x00);
-
-        /* set low-pass filter period */
-        ds3000_tuner_writereg(state, 0x04, 0x2e);
-        ds3000_tuner_writereg(state, 0x51, 0x1b);
-        ds3000_tuner_writereg(state, 0x51, 0x1f);
-        ds3000_tuner_writereg(state, 0x50, 0x04);
-        ds3000_tuner_writereg(state, 0x50, 0x00);
-        msleep(5);
-
-        f3db = ((c->symbol_rate / 1000) << 2) / 5 + 2000;
-        if ((c->symbol_rate / 1000) < 5000)
-                f3db += 3000;
-        if (f3db < 7000)
-                f3db = 7000;
-        if (f3db > 40000)
-                f3db = 40000;
-
-        /* set low-pass filter baseband */
-        value = ds3000_tuner_readreg(state, 0x26);
-        mlpf = 0x2e * 207 / ((value << 1) + 151);
-        mlpf_max = mlpf * 135 / 100;
-        mlpf_min = mlpf * 78 / 100;
-        if (mlpf_max > 63)
-                mlpf_max = 63;
-
-        /* rounded to the closest integer */
-        nlpf = ((mlpf * f3db * 1000) + (2766 * DS3000_XTAL_FREQ / 2))
-                        / (2766 * DS3000_XTAL_FREQ);
-        if (nlpf > 23)
-                nlpf = 23;
-        if (nlpf < 1)
-                nlpf = 1;
-
-        /* rounded to the closest integer */
-        mlpf_new = ((DS3000_XTAL_FREQ * nlpf * 2766) +
-                        (1000 * f3db / 2)) / (1000 * f3db);
-
-        if (mlpf_new < mlpf_min) {
-                nlpf++;
-                mlpf_new = ((DS3000_XTAL_FREQ * nlpf * 2766) +
-                                (1000 * f3db / 2)) / (1000 * f3db);
-        }
-
-        if (mlpf_new > mlpf_max)
-                mlpf_new = mlpf_max;
-
-        ds3000_tuner_writereg(state, 0x04, mlpf_new);
-        ds3000_tuner_writereg(state, 0x06, nlpf);
-        ds3000_tuner_writereg(state, 0x51, 0x1b);
-        ds3000_tuner_writereg(state, 0x51, 0x1f);
-        ds3000_tuner_writereg(state, 0x50, 0x04);
-        ds3000_tuner_writereg(state, 0x50, 0x00);
-        msleep(5);
-
-        /* unknown */
-        ds3000_tuner_writereg(state, 0x51, 0x1e);
-        ds3000_tuner_writereg(state, 0x51, 0x1f);
-        ds3000_tuner_writereg(state, 0x50, 0x01);
-        ds3000_tuner_writereg(state, 0x50, 0x00);
-        msleep(60);
-
-        offset_khz = (ndiv - ndiv % 2 + 1024) * DS3000_XTAL_FREQ
-                / (6 + 8) / (div4 + 1) / 2 - c->frequency;
+        if (fe->ops.tuner_ops.set_params)
+                fe->ops.tuner_ops.set_params(fe);
 
         /* ds3000 global reset */
         ds3000_writereg(state, 0x07, 0x80);
@@ -1186,7 +998,11 @@ static int ds3000_set_frontend(struct dvb_frontend *fe)
         /* start ds3000 build-in uC */
         ds3000_writereg(state, 0xb2, 0x00);
 
-        ds3000_set_carrier_offset(fe, offset_khz);
+        if (fe->ops.tuner_ops.get_frequency) {
+                fe->ops.tuner_ops.get_frequency(fe, &frequency);
+                offset_khz = frequency - c->frequency;
+                ds3000_set_carrier_offset(fe, offset_khz);
+        }
 
         for (i = 0; i < 30 ; i++) {
                 ds3000_read_status(fe, &status);
@@ -1237,10 +1053,6 @@ static int ds3000_initfe(struct dvb_frontend *fe)
         ds3000_writereg(state, 0x08, 0x01 | ds3000_readreg(state, 0x08));
         msleep(1);
 
-        /* TS2020 init */
-        ds3000_tuner_writereg(state, 0x42, 0x73);
-        ds3000_tuner_writereg(state, 0x05, 0x01);
-        ds3000_tuner_writereg(state, 0x62, 0xf5);
         /* Load the firmware if required */
         ret = ds3000_firmware_ondemand(fe);
         if (ret != 0) {
@@ -1251,17 +1063,10 @@ static int ds3000_initfe(struct dvb_frontend *fe)
         return 0;
 }
 
-/* Put device to sleep */
-static int ds3000_sleep(struct dvb_frontend *fe)
-{
-        dprintk("%s()\n", __func__);
-        return 0;
-}
-
 static struct dvb_frontend_ops ds3000_ops = {
-        .delsys = { SYS_DVBS, SYS_DVBS2},
+        .delsys = { SYS_DVBS, SYS_DVBS2 },
         .info = {
-                .name = "Montage Technology DS3000/TS2020",
+                .name = "Montage Technology DS3000",
                 .frequency_min = 950000,
                 .frequency_max = 2150000,
                 .frequency_stepsize = 1011, /* kHz for QPSK frontends */
@@ -1279,10 +1084,9 @@ static struct dvb_frontend_ops ds3000_ops = {
         .release = ds3000_release,
 
         .init = ds3000_initfe,
-        .sleep = ds3000_sleep,
+        .i2c_gate_ctrl = ds3000_i2c_gate_ctrl,
         .read_status = ds3000_read_status,
         .read_ber = ds3000_read_ber,
-        .read_signal_strength = ds3000_read_signal_strength,
         .read_snr = ds3000_read_snr,
         .read_ucblocks = ds3000_read_ucblocks,
         .set_voltage = ds3000_set_voltage,
@@ -1299,7 +1103,7 @@ module_param(debug, int, 0644);
 MODULE_PARM_DESC(debug, "Activates frontend debugging (default:0)");
 
 MODULE_DESCRIPTION("DVB Frontend module for Montage Technology "
-                        "DS3000/TS2020 hardware");
-MODULE_AUTHOR("Konstantin Dimitrov");
+                        "DS3000 hardware");
+MODULE_AUTHOR("Konstantin Dimitrov <kosio.dimitrov@gmail.com>");
 MODULE_LICENSE("GPL");
 MODULE_FIRMWARE(DS3000_DEFAULT_FIRMWARE);
diff --git a/drivers/media/dvb-frontends/ds3000.h b/drivers/media/dvb-frontends/ds3000.h
index 1b736888ea37..67eeaf9bdbce 100644
--- a/drivers/media/dvb-frontends/ds3000.h
+++ b/drivers/media/dvb-frontends/ds3000.h
@@ -1,8 +1,8 @@
 /*
-    Montage Technology DS3000/TS2020 - DVBS/S2 Satellite demod/tuner driver
-    Copyright (C) 2009 Konstantin Dimitrov <kosio.dimitrov@gmail.com>
+    Montage Technology DS3000 - DVBS/S2 Demodulator driver
+    Copyright (C) 2009-2012 Konstantin Dimitrov <kosio.dimitrov@gmail.com>
 
-    Copyright (C) 2009 TurboSight.com
+    Copyright (C) 2009-2012 TurboSight.com
 
     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
@@ -17,7 +17,7 @@
     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 DS3000_H
 #define DS3000_H