[media] move the dvb/frontends to drivers/media/dvb-frontends

Raise the DVB frontends one level up, as the intention is to remove
the drivers/media/dvb directory.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 553 insertions, 0 deletions

diff --git a/drivers/media/dvb-frontends/ves1x93.c b/drivers/media/dvb-frontends/ves1x93.c
new file mode 100644
index 000000000000..9c17eacaec24
--- /dev/null
+++ b/drivers/media/dvb-frontends/ves1x93.c
@@ -0,0 +1,553 @@
+/*
+    Driver for VES1893 and VES1993 QPSK Demodulators
+
+    Copyright (C) 1999 Convergence Integrated Media GmbH <ralph@convergence.de>
+    Copyright (C) 2001 Ronny Strutz <3des@elitedvb.de>
+    Copyright (C) 2002 Dennis Noermann <dennis.noermann@noernet.de>
+    Copyright (C) 2002-2003 Andreas Oberritter <obi@linuxtv.org>
+
+    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/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/string.h>
+#include <linux/slab.h>
+#include <linux/delay.h>
+
+#include "dvb_frontend.h"
+#include "ves1x93.h"
+
+
+struct ves1x93_state {
+        struct i2c_adapter* i2c;
+        /* configuration settings */
+        const struct ves1x93_config* config;
+        struct dvb_frontend frontend;
+
+        /* previous uncorrected block counter */
+        fe_spectral_inversion_t inversion;
+        u8 *init_1x93_tab;
+        u8 *init_1x93_wtab;
+        u8 tab_size;
+        u8 demod_type;
+        u32 frequency;
+};
+
+static int debug;
+#define dprintk if (debug) printk
+
+#define DEMOD_VES1893           0
+#define DEMOD_VES1993           1
+
+static u8 init_1893_tab [] = {
+        0x01, 0xa4, 0x35, 0x80, 0x2a, 0x0b, 0x55, 0xc4,
+        0x09, 0x69, 0x00, 0x86, 0x4c, 0x28, 0x7f, 0x00,
+        0x00, 0x81, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x80, 0x00, 0x21, 0xb0, 0x14, 0x00, 0xdc, 0x00,
+        0x81, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x55, 0x00, 0x00, 0x7f, 0x00
+};
+
+static u8 init_1993_tab [] = {
+        0x00, 0x9c, 0x35, 0x80, 0x6a, 0x09, 0x72, 0x8c,
+        0x09, 0x6b, 0x00, 0x00, 0x4c, 0x08, 0x00, 0x00,
+        0x00, 0x81, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x80, 0x40, 0x21, 0xb0, 0x00, 0x00, 0x00, 0x10,
+        0x81, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x80, 0x80, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x55, 0x03, 0x00, 0x00, 0x00, 0x00, 0x03,
+        0x00, 0x00, 0x0e, 0x80, 0x00
+};
+
+static u8 init_1893_wtab[] =
+{
+        1,1,1,1,1,1,1,1, 1,1,0,0,1,1,0,0,
+        0,1,0,0,0,0,0,0, 1,0,1,1,0,0,0,1,
+        1,1,1,0,0,0,0,0, 0,0,1,1,0,0,0,0,
+        1,1,1,0,1,1
+};
+
+static u8 init_1993_wtab[] =
+{
+        1,1,1,1,1,1,1,1, 1,1,0,0,1,1,0,0,
+        0,1,0,0,0,0,0,0, 1,1,1,1,0,0,0,1,
+        1,1,1,0,0,0,0,0, 0,0,1,1,0,0,0,0,
+        1,1,1,0,1,1,1,1, 1,1,1,1,1
+};
+
+static int ves1x93_writereg (struct ves1x93_state* state, u8 reg, u8 data)
+{
+        u8 buf [] = { 0x00, reg, data };
+        struct i2c_msg msg = { .addr = state->config->demod_address, .flags = 0, .buf = buf, .len = 3 };
+        int err;
+
+        if ((err = i2c_transfer (state->i2c, &msg, 1)) != 1) {
+                dprintk ("%s: writereg error (err == %i, reg == 0x%02x, data == 0x%02x)\n", __func__, err, reg, data);
+                return -EREMOTEIO;
+        }
+
+        return 0;
+}
+
+static u8 ves1x93_readreg (struct ves1x93_state* state, u8 reg)
+{
+        int ret;
+        u8 b0 [] = { 0x00, reg };
+        u8 b1 [] = { 0 };
+        struct i2c_msg msg [] = { { .addr = state->config->demod_address, .flags = 0, .buf = b0, .len = 2 },
+                           { .addr = state->config->demod_address, .flags = I2C_M_RD, .buf = b1, .len = 1 } };
+
+        ret = i2c_transfer (state->i2c, msg, 2);
+
+        if (ret != 2) return ret;
+
+        return b1[0];
+}
+
+static int ves1x93_clr_bit (struct ves1x93_state* state)
+{
+        msleep(10);
+        ves1x93_writereg (state, 0, state->init_1x93_tab[0] & 0xfe);
+        ves1x93_writereg (state, 0, state->init_1x93_tab[0]);
+        msleep(50);
+        return 0;
+}
+
+static int ves1x93_set_inversion (struct ves1x93_state* state, fe_spectral_inversion_t inversion)
+{
+        u8 val;
+
+        /*
+         * inversion on/off are interchanged because i and q seem to
+         * be swapped on the hardware
+         */
+
+        switch (inversion) {
+        case INVERSION_OFF:
+                val = 0xc0;
+                break;
+        case INVERSION_ON:
+                val = 0x80;
+                break;
+        case INVERSION_AUTO:
+                val = 0x00;
+                break;
+        default:
+                return -EINVAL;
+        }
+
+        return ves1x93_writereg (state, 0x0c, (state->init_1x93_tab[0x0c] & 0x3f) | val);
+}
+
+static int ves1x93_set_fec (struct ves1x93_state* state, fe_code_rate_t fec)
+{
+        if (fec == FEC_AUTO)
+                return ves1x93_writereg (state, 0x0d, 0x08);
+        else if (fec < FEC_1_2 || fec > FEC_8_9)
+                return -EINVAL;
+        else
+                return ves1x93_writereg (state, 0x0d, fec - FEC_1_2);
+}
+
+static fe_code_rate_t ves1x93_get_fec (struct ves1x93_state* state)
+{
+        return FEC_1_2 + ((ves1x93_readreg (state, 0x0d) >> 4) & 0x7);
+}
+
+static int ves1x93_set_symbolrate (struct ves1x93_state* state, u32 srate)
+{
+        u32 BDR;
+        u32 ratio;
+        u8  ADCONF, FCONF, FNR, AGCR;
+        u32 BDRI;
+        u32 tmp;
+        u32 FIN;
+
+        dprintk("%s: srate == %d\n", __func__, (unsigned int) srate);
+
+        if (srate > state->config->xin/2)
+                srate = state->config->xin/2;
+
+        if (srate < 500000)
+                srate = 500000;
+
+#define MUL (1UL<<26)
+
+        FIN = (state->config->xin + 6000) >> 4;
+
+        tmp = srate << 6;
+        ratio = tmp / FIN;
+
+        tmp = (tmp % FIN) << 8;
+        ratio = (ratio << 8) + tmp / FIN;
+
+        tmp = (tmp % FIN) << 8;
+        ratio = (ratio << 8) + tmp / FIN;
+
+        FNR = 0xff;
+
+        if (ratio < MUL/3)           FNR = 0;
+        if (ratio < (MUL*11)/50)     FNR = 1;
+        if (ratio < MUL/6)           FNR = 2;
+        if (ratio < MUL/9)           FNR = 3;
+        if (ratio < MUL/12)          FNR = 4;
+        if (ratio < (MUL*11)/200)    FNR = 5;
+        if (ratio < MUL/24)          FNR = 6;
+        if (ratio < (MUL*27)/1000)   FNR = 7;
+        if (ratio < MUL/48)          FNR = 8;
+        if (ratio < (MUL*137)/10000) FNR = 9;
+
+        if (FNR == 0xff) {
+                ADCONF = 0x89;
+                FCONF  = 0x80;
+                FNR     = 0;
+        } else {
+                ADCONF = 0x81;
+                FCONF  = 0x88 | (FNR >> 1) | ((FNR & 0x01) << 5);
+                /*FCONF  = 0x80 | ((FNR & 0x01) << 5) | (((FNR > 1) & 0x03) << 3) | ((FNR >> 1) & 0x07);*/
+        }
+
+        BDR = (( (ratio << (FNR >> 1)) >> 4) + 1) >> 1;
+        BDRI = ( ((FIN << 8) / ((srate << (FNR >> 1)) >> 2)) + 1) >> 1;
+
+        dprintk("FNR= %d\n", FNR);
+        dprintk("ratio= %08x\n", (unsigned int) ratio);
+        dprintk("BDR= %08x\n", (unsigned int) BDR);
+        dprintk("BDRI= %02x\n", (unsigned int) BDRI);
+
+        if (BDRI > 0xff)
+                BDRI = 0xff;
+
+        ves1x93_writereg (state, 0x06, 0xff & BDR);
+        ves1x93_writereg (state, 0x07, 0xff & (BDR >> 8));
+        ves1x93_writereg (state, 0x08, 0x0f & (BDR >> 16));
+
+        ves1x93_writereg (state, 0x09, BDRI);
+        ves1x93_writereg (state, 0x20, ADCONF);
+        ves1x93_writereg (state, 0x21, FCONF);
+
+        AGCR = state->init_1x93_tab[0x05];
+        if (state->config->invert_pwm)
+                AGCR |= 0x20;
+
+        if (srate < 6000000)
+                AGCR |= 0x80;
+        else
+                AGCR &= ~0x80;
+
+        ves1x93_writereg (state, 0x05, AGCR);
+
+        /* ves1993 hates this, will lose lock */
+        if (state->demod_type != DEMOD_VES1993)
+                ves1x93_clr_bit (state);
+
+        return 0;
+}
+
+static int ves1x93_init (struct dvb_frontend* fe)
+{
+        struct ves1x93_state* state = fe->demodulator_priv;
+        int i;
+        int val;
+
+        dprintk("%s: init chip\n", __func__);
+
+        for (i = 0; i < state->tab_size; i++) {
+                if (state->init_1x93_wtab[i]) {
+                        val = state->init_1x93_tab[i];
+
+                        if (state->config->invert_pwm && (i == 0x05)) val |= 0x20; /* invert PWM */
+                        ves1x93_writereg (state, i, val);
+                }
+        }
+
+        return 0;
+}
+
+static int ves1x93_set_voltage (struct dvb_frontend* fe, fe_sec_voltage_t voltage)
+{
+        struct ves1x93_state* state = fe->demodulator_priv;
+
+        switch (voltage) {
+        case SEC_VOLTAGE_13:
+                return ves1x93_writereg (state, 0x1f, 0x20);
+        case SEC_VOLTAGE_18:
+                return ves1x93_writereg (state, 0x1f, 0x30);
+        case SEC_VOLTAGE_OFF:
+                return ves1x93_writereg (state, 0x1f, 0x00);
+        default:
+                return -EINVAL;
+        }
+}
+
+static int ves1x93_read_status(struct dvb_frontend* fe, fe_status_t* status)
+{
+        struct ves1x93_state* state = fe->demodulator_priv;
+
+        u8 sync = ves1x93_readreg (state, 0x0e);
+
+        /*
+         * The ves1893 sometimes returns sync values that make no sense,
+         * because, e.g., the SIGNAL bit is 0, while some of the higher
+         * bits are 1 (and how can there be a CARRIER w/o a SIGNAL?).
+         * Tests showed that the VITERBI and SYNC bits are returned
+         * reliably, while the SIGNAL and CARRIER bits ar sometimes wrong.
+         * If such a case occurs, we read the value again, until we get a
+         * valid value.
+         */
+        int maxtry = 10; /* just for safety - let's not get stuck here */
+        while ((sync & 0x03) != 0x03 && (sync & 0x0c) && maxtry--) {
+                msleep(10);
+                sync = ves1x93_readreg (state, 0x0e);
+        }
+
+        *status = 0;
+
+        if (sync & 1)
+                *status |= FE_HAS_SIGNAL;
+
+        if (sync & 2)
+                *status |= FE_HAS_CARRIER;
+
+        if (sync & 4)
+                *status |= FE_HAS_VITERBI;
+
+        if (sync & 8)
+                *status |= FE_HAS_SYNC;
+
+        if ((sync & 0x1f) == 0x1f)
+                *status |= FE_HAS_LOCK;
+
+        return 0;
+}
+
+static int ves1x93_read_ber(struct dvb_frontend* fe, u32* ber)
+{
+        struct ves1x93_state* state = fe->demodulator_priv;
+
+        *ber = ves1x93_readreg (state, 0x15);
+        *ber |= (ves1x93_readreg (state, 0x16) << 8);
+        *ber |= ((ves1x93_readreg (state, 0x17) & 0x0F) << 16);
+        *ber *= 10;
+
+        return 0;
+}
+
+static int ves1x93_read_signal_strength(struct dvb_frontend* fe, u16* strength)
+{
+        struct ves1x93_state* state = fe->demodulator_priv;
+
+        u8 signal = ~ves1x93_readreg (state, 0x0b);
+        *strength = (signal << 8) | signal;
+
+        return 0;
+}
+
+static int ves1x93_read_snr(struct dvb_frontend* fe, u16* snr)
+{
+        struct ves1x93_state* state = fe->demodulator_priv;
+
+        u8 _snr = ~ves1x93_readreg (state, 0x1c);
+        *snr = (_snr << 8) | _snr;
+
+        return 0;
+}
+
+static int ves1x93_read_ucblocks(struct dvb_frontend* fe, u32* ucblocks)
+{
+        struct ves1x93_state* state = fe->demodulator_priv;
+
+        *ucblocks = ves1x93_readreg (state, 0x18) & 0x7f;
+
+        if (*ucblocks == 0x7f)
+                *ucblocks = 0xffffffff;   /* counter overflow... */
+
+        ves1x93_writereg (state, 0x18, 0x00);  /* reset the counter */
+        ves1x93_writereg (state, 0x18, 0x80);  /* dto. */
+
+        return 0;
+}
+
+static int ves1x93_set_frontend(struct dvb_frontend *fe)
+{
+        struct dtv_frontend_properties *p = &fe->dtv_property_cache;
+        struct ves1x93_state* state = fe->demodulator_priv;
+
+        if (fe->ops.tuner_ops.set_params) {
+                fe->ops.tuner_ops.set_params(fe);
+                if (fe->ops.i2c_gate_ctrl) fe->ops.i2c_gate_ctrl(fe, 0);
+        }
+        ves1x93_set_inversion (state, p->inversion);
+        ves1x93_set_fec(state, p->fec_inner);
+        ves1x93_set_symbolrate(state, p->symbol_rate);
+        state->inversion = p->inversion;
+        state->frequency = p->frequency;
+
+        return 0;
+}
+
+static int ves1x93_get_frontend(struct dvb_frontend *fe)
+{
+        struct dtv_frontend_properties *p = &fe->dtv_property_cache;
+        struct ves1x93_state* state = fe->demodulator_priv;
+        int afc;
+
+        afc = ((int)((char)(ves1x93_readreg (state, 0x0a) << 1)))/2;
+        afc = (afc * (int)(p->symbol_rate/1000/8))/16;
+
+        p->frequency = state->frequency - afc;
+
+        /*
+         * inversion indicator is only valid
+         * if auto inversion was used
+         */
+        if (state->inversion == INVERSION_AUTO)
+                p->inversion = (ves1x93_readreg (state, 0x0f) & 2) ?
+                                INVERSION_OFF : INVERSION_ON;
+        p->fec_inner = ves1x93_get_fec(state);
+        /*  XXX FIXME: timing offset !! */
+
+        return 0;
+}
+
+static int ves1x93_sleep(struct dvb_frontend* fe)
+{
+        struct ves1x93_state* state = fe->demodulator_priv;
+
+        return ves1x93_writereg (state, 0x00, 0x08);
+}
+
+static void ves1x93_release(struct dvb_frontend* fe)
+{
+        struct ves1x93_state* state = fe->demodulator_priv;
+        kfree(state);
+}
+
+static int ves1x93_i2c_gate_ctrl(struct dvb_frontend* fe, int enable)
+{
+        struct ves1x93_state* state = fe->demodulator_priv;
+
+        if (enable) {
+                return ves1x93_writereg(state, 0x00, 0x11);
+        } else {
+                return ves1x93_writereg(state, 0x00, 0x01);
+        }
+}
+
+static struct dvb_frontend_ops ves1x93_ops;
+
+struct dvb_frontend* ves1x93_attach(const struct ves1x93_config* config,
+                                    struct i2c_adapter* i2c)
+{
+        struct ves1x93_state* state = NULL;
+        u8 identity;
+
+        /* allocate memory for the internal state */
+        state = kzalloc(sizeof(struct ves1x93_state), GFP_KERNEL);
+        if (state == NULL) goto error;
+
+        /* setup the state */
+        state->config = config;
+        state->i2c = i2c;
+        state->inversion = INVERSION_OFF;
+
+        /* check if the demod is there + identify it */
+        identity = ves1x93_readreg(state, 0x1e);
+        switch (identity) {
+        case 0xdc: /* VES1893A rev1 */
+                printk("ves1x93: Detected ves1893a rev1\n");
+                state->demod_type = DEMOD_VES1893;
+                state->init_1x93_tab = init_1893_tab;
+                state->init_1x93_wtab = init_1893_wtab;
+                state->tab_size = sizeof(init_1893_tab);
+                break;
+
+        case 0xdd: /* VES1893A rev2 */
+                printk("ves1x93: Detected ves1893a rev2\n");
+                state->demod_type = DEMOD_VES1893;
+                state->init_1x93_tab = init_1893_tab;
+                state->init_1x93_wtab = init_1893_wtab;
+                state->tab_size = sizeof(init_1893_tab);
+                break;
+
+        case 0xde: /* VES1993 */
+                printk("ves1x93: Detected ves1993\n");
+                state->demod_type = DEMOD_VES1993;
+                state->init_1x93_tab = init_1993_tab;
+                state->init_1x93_wtab = init_1993_wtab;
+                state->tab_size = sizeof(init_1993_tab);
+                break;
+
+        default:
+                goto error;
+        }
+
+        /* create dvb_frontend */
+        memcpy(&state->frontend.ops, &ves1x93_ops, sizeof(struct dvb_frontend_ops));
+        state->frontend.demodulator_priv = state;
+        return &state->frontend;
+
+error:
+        kfree(state);
+        return NULL;
+}
+
+static struct dvb_frontend_ops ves1x93_ops = {
+        .delsys = { SYS_DVBS },
+        .info = {
+                .name                   = "VLSI VES1x93 DVB-S",
+                .frequency_min          = 950000,
+                .frequency_max          = 2150000,
+                .frequency_stepsize     = 125,           /* kHz for QPSK frontends */
+                .frequency_tolerance    = 29500,
+                .symbol_rate_min        = 1000000,
+                .symbol_rate_max        = 45000000,
+        /*      .symbol_rate_tolerance  =       ???,*/
+                .caps = FE_CAN_INVERSION_AUTO |
+                        FE_CAN_FEC_1_2 | FE_CAN_FEC_2_3 | FE_CAN_FEC_3_4 |
+                        FE_CAN_FEC_5_6 | FE_CAN_FEC_7_8 | FE_CAN_FEC_AUTO |
+                        FE_CAN_QPSK
+        },
+
+        .release = ves1x93_release,
+
+        .init = ves1x93_init,
+        .sleep = ves1x93_sleep,
+        .i2c_gate_ctrl = ves1x93_i2c_gate_ctrl,
+
+        .set_frontend = ves1x93_set_frontend,
+        .get_frontend = ves1x93_get_frontend,
+
+        .read_status = ves1x93_read_status,
+        .read_ber = ves1x93_read_ber,
+        .read_signal_strength = ves1x93_read_signal_strength,
+        .read_snr = ves1x93_read_snr,
+        .read_ucblocks = ves1x93_read_ucblocks,
+
+        .set_voltage = ves1x93_set_voltage,
+};
+
+module_param(debug, int, 0644);
+
+MODULE_DESCRIPTION("VLSI VES1x93 DVB-S Demodulator driver");
+MODULE_AUTHOR("Ralph Metzler");
+MODULE_LICENSE("GPL");
+
+EXPORT_SYMBOL(ves1x93_attach);