V4L/DVB (9377): Add STB6100 Support

Signed-off-by: Manu Abraham <manu@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

2 files changed, 667 insertions, 0 deletions

diff --git a/drivers/media/dvb/frontends/stb6100.c b/drivers/media/dvb/frontends/stb6100.c
new file mode 100644
index 000000000000..d5ccc00e1169
--- /dev/null
+++ b/drivers/media/dvb/frontends/stb6100.c
@@ -0,0 +1,566 @@
+/*
+        STB6100 Silicon Tuner
+        Copyright (C) Manu Abraham (abraham.manu@gmail.com)
+
+        Copyright (C) ST Microelectronics
+
+        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/init.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/string.h>
+
+#include "dvb_frontend.h"
+#include "stb6100.h"
+
+static unsigned int verbose;
+module_param(verbose, int, 0644);
+
+
+#define FE_ERROR                0
+#define FE_NOTICE               1
+#define FE_INFO                 2
+#define FE_DEBUG                3
+
+#define dprintk(x, y, z, format, arg...) do {                                           \
+        if (z) {                                                                        \
+                if      ((x > FE_ERROR) && (x > y))                                     \
+                        printk(KERN_ERR "%s: " format "\n", __func__ , ##arg);          \
+                else if ((x > FE_NOTICE) && (x > y))                                    \
+                        printk(KERN_NOTICE "%s: " format "\n", __func__ , ##arg);       \
+                else if ((x > FE_INFO) && (x > y))                                      \
+                        printk(KERN_INFO "%s: " format "\n", __func__ , ##arg);         \
+                else if ((x > FE_DEBUG) && (x > y))                                     \
+                        printk(KERN_DEBUG "%s: " format "\n", __func__ , ##arg);        \
+        } else {                                                                        \
+                if (x > y)                                                              \
+                        printk(format, ##arg);                                          \
+        }                                                                               \
+} while(0)
+
+struct stb6100_lkup {
+        u32 val_low;
+        u32 val_high;
+        u8   reg;
+};
+
+static int stb6100_release(struct dvb_frontend *fe);
+
+static const struct stb6100_lkup lkup[] = {
+        {       0,  950000, 0x0a },
+        {  950000, 1000000, 0x0a },
+        { 1000000, 1075000, 0x0c },
+        { 1075000, 1200000, 0x00 },
+        { 1200000, 1300000, 0x01 },
+        { 1300000, 1370000, 0x02 },
+        { 1370000, 1470000, 0x04 },
+        { 1470000, 1530000, 0x05 },
+        { 1530000, 1650000, 0x06 },
+        { 1650000, 1800000, 0x08 },
+        { 1800000, 1950000, 0x0a },
+        { 1950000, 2150000, 0x0c },
+        { 2150000, 9999999, 0x0c },
+        {       0,       0, 0x00 }
+};
+
+/* Register names for easy debugging.   */
+static const char *stb6100_regnames[] = {
+        [STB6100_LD]            = "LD",
+        [STB6100_VCO]           = "VCO",
+        [STB6100_NI]            = "NI",
+        [STB6100_NF_LSB]        = "NF",
+        [STB6100_K]             = "K",
+        [STB6100_G]             = "G",
+        [STB6100_F]             = "F",
+        [STB6100_DLB]           = "DLB",
+        [STB6100_TEST1]         = "TEST1",
+        [STB6100_FCCK]          = "FCCK",
+        [STB6100_LPEN]          = "LPEN",
+        [STB6100_TEST3]         = "TEST3",
+};
+
+/* Template for normalisation, i.e. setting unused or undocumented
+ * bits as required according to the documentation.
+ */
+struct stb6100_regmask {
+        u8 mask;
+        u8 set;
+};
+
+static const struct stb6100_regmask stb6100_template[] = {
+        [STB6100_LD]            = { 0xff, 0x00 },
+        [STB6100_VCO]           = { 0xff, 0x00 },
+        [STB6100_NI]            = { 0xff, 0x00 },
+        [STB6100_NF_LSB]        = { 0xff, 0x00 },
+        [STB6100_K]             = { 0xc7, 0x38 },
+        [STB6100_G]             = { 0xef, 0x10 },
+        [STB6100_F]             = { 0x1f, 0xc0 },
+        [STB6100_DLB]           = { 0x38, 0xc4 },
+        [STB6100_TEST1]         = { 0x00, 0x8f },
+        [STB6100_FCCK]          = { 0x40, 0x0d },
+        [STB6100_LPEN]          = { 0xf0, 0x0b },
+        [STB6100_TEST3]         = { 0x00, 0xde },
+};
+
+static void stb6100_normalise_regs(u8 regs[])
+{
+        int i;
+
+        for (i = 0; i < STB6100_NUMREGS; i++)
+                regs[i] = (regs[i] & stb6100_template[i].mask) | stb6100_template[i].set;
+}
+
+static int stb6100_read_regs(struct stb6100_state *state, u8 regs[])
+{
+        int rc;
+        struct i2c_msg msg = {
+                .addr   = state->config->tuner_address,
+                .flags  = I2C_M_RD,
+                .buf    = regs,
+                .len    = STB6100_NUMREGS
+        };
+
+        if (state->frontend->ops.i2c_gate_ctrl)
+                if ((rc = state->frontend->ops.i2c_gate_ctrl(state->frontend, 1)) < 0)
+                        return rc;
+
+        rc = i2c_transfer(state->i2c, &msg, 1);
+        if (state->frontend->ops.i2c_gate_ctrl) {
+                int rc2;
+                if ((rc2 = state->frontend->ops.i2c_gate_ctrl(state->frontend, 0)) < 0)
+                        return rc2;
+        }
+        if (unlikely(rc != 1)) {
+                dprintk(verbose, FE_ERROR, 1, "Read (0x%x) err, rc=[%d]",
+                        state->config->tuner_address, rc);
+
+                return -EREMOTEIO;
+        }
+        if (unlikely(verbose > FE_DEBUG)) {
+                int i;
+
+                dprintk(verbose, FE_DEBUG, 1, "    Read from 0x%02x", state->config->tuner_address);
+                for (i = 0; i < STB6100_NUMREGS; i++)
+                        dprintk(verbose, FE_DEBUG, 1, "        %s: 0x%02x", stb6100_regnames[i], regs[i]);
+        }
+        return 0;
+}
+
+static int stb6100_read_reg(struct stb6100_state *state, u8 reg)
+{
+        u8 regs[STB6100_NUMREGS];
+        int rc;
+
+        if (unlikely(reg >= STB6100_NUMREGS)) {
+                dprintk(verbose, FE_ERROR, 1, "Invalid register offset 0x%x", reg);
+                return -EINVAL;
+        }
+        if ((rc = stb6100_read_regs(state, regs)) < 0)
+                return rc;
+        return (unsigned int)regs[reg];
+}
+
+static int stb6100_write_reg_range(struct stb6100_state *state, u8 buf[], int start, int len)
+{
+        int rc;
+        u8 cmdbuf[len + 1];
+        struct i2c_msg msg = {
+                .addr   = state->config->tuner_address,
+                .flags  = 0,
+                .buf    = cmdbuf,
+                .len    = len + 1
+        };
+
+        if (unlikely(start < 1 || start + len > STB6100_NUMREGS)) {
+                dprintk(verbose, FE_ERROR, 1, "Invalid register range %d:%d",
+                        start, len);
+                return -EINVAL;
+        }
+        memcpy(&cmdbuf[1], buf, len);
+        cmdbuf[0] = start;
+
+        if (unlikely(verbose > FE_DEBUG)) {
+                int i;
+
+                dprintk(verbose, FE_DEBUG, 1, "    Write @ 0x%02x: [%d:%d]", state->config->tuner_address, start, len);
+                for (i = 0; i < len; i++)
+                        dprintk(verbose, FE_DEBUG, 1, "        %s: 0x%02x", stb6100_regnames[start + i], buf[i]);
+        }
+        if (state->frontend->ops.i2c_gate_ctrl)
+                if ((rc = state->frontend->ops.i2c_gate_ctrl(state->frontend, 1)) < 0)
+                        return rc;
+        rc = i2c_transfer(state->i2c, &msg, 1);
+        if (state->frontend->ops.i2c_gate_ctrl) {
+                int rc2;
+                if ((rc2 = state->frontend->ops.i2c_gate_ctrl(state->frontend, 0)) < 0)
+                        return rc2;
+        }
+        if (unlikely(rc != 1)) {
+                dprintk(verbose, FE_ERROR, 1, "(0x%x) write err [%d:%d], rc=[%d]",
+                        (unsigned int)state->config->tuner_address, start, len, rc);
+                return -EREMOTEIO;
+        }
+        return 0;
+}
+
+static int stb6100_write_reg(struct stb6100_state *state, u8 reg, u8 data)
+{
+        if (unlikely(reg >= STB6100_NUMREGS)) {
+                dprintk(verbose, FE_ERROR, 1, "Invalid register offset 0x%x", reg);
+                return -EREMOTEIO;
+        }
+        data = (data & stb6100_template[reg].mask) | stb6100_template[reg].set;
+        return stb6100_write_reg_range(state, &data, reg, 1);
+}
+
+static int stb6100_write_regs(struct stb6100_state *state, u8 regs[])
+{
+        stb6100_normalise_regs(regs);
+        return stb6100_write_reg_range(state, &regs[1], 1, STB6100_NUMREGS - 1);
+}
+
+static int stb6100_get_status(struct dvb_frontend *fe, u32 *status)
+{
+        int rc;
+        struct stb6100_state *state = fe->tuner_priv;
+
+        if ((rc = stb6100_read_reg(state, STB6100_LD)) < 0)
+                return rc;
+
+        return (rc & STB6100_LD_LOCK) ? TUNER_STATUS_LOCKED : 0;
+}
+
+static int stb6100_get_bandwidth(struct dvb_frontend *fe, u32 *bandwidth)
+{
+        int rc;
+        u8 f;
+        struct stb6100_state *state = fe->tuner_priv;
+
+        if ((rc = stb6100_read_reg(state, STB6100_F)) < 0)
+                return rc;
+        f = rc & STB6100_F_F;
+
+        state->status.bandwidth = (f + 5) * 2000;       /* x2 for ZIF   */
+
+        *bandwidth = state->bandwidth = state->status.bandwidth * 1000;
+        dprintk(verbose, FE_DEBUG, 1, "bandwidth = %u Hz", state->bandwidth);
+        return 0;
+}
+
+static int stb6100_set_bandwidth(struct dvb_frontend *fe, u32 bandwidth)
+{
+        u32 tmp;
+        int rc;
+        struct stb6100_state *state = fe->tuner_priv;
+
+        dprintk(verbose, FE_DEBUG, 1, "set bandwidth to %u kHz", bandwidth);
+
+        bandwidth *= 1000 / 2;  /* kHz -> Hz, bw / 2 */
+
+        if (bandwidth > 36000000)       /* F[4:0] BW/2 max =31+5=36 mhz for F=31        */
+                tmp = 31;
+        if (bandwidth < 5000000)        /* bw/2 min = 5Mhz for F=0                      */
+                tmp = 0;
+        else                            /* if 5 < bw/2 < 36                             */
+                tmp = bandwidth / 1000000 - 5;
+
+        /* Turn on LPF bandwidth setting clock control,
+         * set bandwidth, wait 10ms, turn off.
+         */
+        if ((rc = stb6100_write_reg(state, STB6100_FCCK, 0x0d | STB6100_FCCK_FCCK)) < 0)
+                return rc;
+        if ((rc = stb6100_write_reg(state, STB6100_F, 0xc0 | tmp)) < 0)
+                return rc;
+        msleep(1);
+        if ((rc = stb6100_write_reg(state, STB6100_FCCK, 0x0d)) < 0)
+                return rc;
+
+        return 0;
+}
+
+static int stb6100_get_frequency(struct dvb_frontend *fe, u32 *frequency)
+{
+        int rc;
+        u32 nint, nfrac, fvco;
+        int psd2, odiv;
+        struct stb6100_state *state = fe->tuner_priv;
+        u8 regs[STB6100_NUMREGS];
+
+        if ((rc = stb6100_read_regs(state, regs)) < 0)
+                return rc;
+
+        odiv = (regs[STB6100_VCO] & STB6100_VCO_ODIV) >> STB6100_VCO_ODIV_SHIFT;
+        psd2 = (regs[STB6100_K] & STB6100_K_PSD2) >> STB6100_K_PSD2_SHIFT;
+        nint = regs[STB6100_NI];
+        nfrac = ((regs[STB6100_K] & STB6100_K_NF_MSB) << 8) | regs[STB6100_NF_LSB];
+        fvco = (nfrac * state->reference >> (9 - psd2)) + (nint * state->reference << psd2);
+        *frequency = state->frequency = fvco >> (odiv + 1);
+
+        dprintk(verbose, FE_DEBUG, 1,
+                "frequency = %u kHz, odiv = %u, psd2 = %u, fxtal = %u kHz, fvco = %u kHz, N(I) = %u, N(F) = %u",
+                state->frequency, odiv, psd2, state->reference, fvco, nint, nfrac);
+        return 0;
+}
+
+
+static int stb6100_set_frequency(struct dvb_frontend *fe, u32 frequency)
+{
+        int rc;
+        const struct stb6100_lkup *ptr;
+        struct stb6100_state *state = fe->tuner_priv;
+        struct dvbfe_params params;
+
+        u32 srate = 0, fvco, nint, nfrac;
+        u8 regs[STB6100_NUMREGS];
+        u8 g, psd2, odiv;
+
+        if ((rc = stb6100_read_regs(state, regs)) < 0)
+                return rc;
+        if (fe->ops.get_params) {
+                dprintk(verbose, FE_DEBUG, 1, "Get Frontend parameters");
+                fe->ops.get_params(fe, &params);
+        }
+        switch (params.delivery) {
+        case DVBFE_DELSYS_DVBS:
+                srate = params.delsys.dvbs.symbol_rate;
+                dprintk(verbose, FE_DEBUG, 1, "Delivery system = DVB-S, Symbol Rate=[%d]", srate);
+                break;
+        case DVBFE_DELSYS_DSS:
+                dprintk(verbose, FE_DEBUG, 1, "Delivery system = DSS, Symbol Rate=[%d]", srate);
+                srate = params.delsys.dss.symbol_rate;
+                break;
+        case DVBFE_DELSYS_DVBS2:
+                dprintk(verbose, FE_DEBUG, 1, "Delivery system = DVB-S2, Symbol Rate=[%d]", srate);
+                srate = params.delsys.dvbs2.symbol_rate;
+                break;
+        default:
+                dprintk(verbose, FE_NOTICE, 1, "symbol rate unknown!");
+                srate = 22000000; /* just a typical default value       */
+        }
+
+        /* Baseband gain.       */
+        if (srate >= 15000000)
+                g = 8;
+        else if (state->srate >= 5000000)
+                g = 12;
+        else
+                g = 14;
+        regs[STB6100_G] = (regs[STB6100_G] & ~STB6100_G_G) | g;
+
+        /* VCO divide ratio (LO divide ratio, VCO prescaler enable).    */
+        if (frequency <= 1075000)
+                odiv = 1;
+        else
+                odiv = 0;
+        regs[STB6100_VCO] = (regs[STB6100_VCO] & ~STB6100_VCO_ODIV) | (odiv << STB6100_VCO_ODIV_SHIFT);
+
+        if ((frequency > 1075000) && (frequency <= 1325000))
+                psd2 = 0;
+        else
+                psd2 = 1;
+        regs[STB6100_K] = (regs[STB6100_K] & ~STB6100_K_PSD2) | (psd2 << STB6100_K_PSD2_SHIFT);
+
+        /* OSM  */
+        for (ptr = lkup;
+             (ptr->val_high != 0) && !CHKRANGE(frequency, ptr->val_low, ptr->val_high);
+             ptr++);
+        if (ptr->val_high == 0) {
+                printk(KERN_ERR "%s: frequency out of range: %u kHz\n", __func__, frequency);
+                return -EINVAL;
+        }
+        regs[STB6100_VCO] = (regs[STB6100_VCO] & ~STB6100_VCO_OSM) | ptr->reg;
+
+        /* F(VCO) = F(LO) * (ODIV == 0 ? 2 : 4)                 */
+        fvco = frequency << (1 + odiv);
+        /* N(I) = floor(f(VCO) / (f(XTAL) * (PSD2 ? 2 : 1)))    */
+        nint = fvco / (state->reference << psd2);
+        /* N(F) = round(f(VCO) / f(XTAL) * (PSD2 ? 2 : 1) - N(I)) * 2 ^ 9       */
+        nfrac = (((fvco - (nint * state->reference << psd2)) << (9 - psd2)) + state->reference / 2) / state->reference;
+        dprintk(verbose, FE_DEBUG, 1,
+                "frequency = %u, srate = %u, g = %u, odiv = %u, psd2 = %u, fxtal = %u, osm = %u, fvco = %u, N(I) = %u, N(F) = %u",
+                frequency, srate, (unsigned int)g, (unsigned int)odiv,
+                (unsigned int)psd2, state->reference,
+                ptr->reg, fvco, nint, nfrac);
+        regs[STB6100_NI] = nint;
+        regs[STB6100_NF_LSB] = nfrac;
+        regs[STB6100_K] = (regs[STB6100_K] & ~STB6100_K_NF_MSB) | ((nfrac >> 8) & STB6100_K_NF_MSB);
+        regs[STB6100_VCO] |= STB6100_VCO_OSCH;          /* VCO search enabled           */
+        regs[STB6100_VCO] |= STB6100_VCO_OCK;           /* VCO search clock off         */
+        regs[STB6100_FCCK] |= STB6100_FCCK_FCCK;        /* LPF BW setting clock enabled */
+        regs[STB6100_LPEN] &= ~STB6100_LPEN_LPEN;       /* PLL loop disabled            */
+        /* Power up. */
+        regs[STB6100_LPEN] |= STB6100_LPEN_SYNP | STB6100_LPEN_OSCP | STB6100_LPEN_BEN;
+
+        if ((rc = stb6100_write_regs(state, regs)) < 0)
+                return rc;
+
+        regs[STB6100_LPEN] |= STB6100_LPEN_LPEN;        /* PLL loop enabled             */
+        if ((rc = stb6100_write_reg(state, STB6100_LPEN, regs[STB6100_LPEN])) < 0)
+                return rc;
+
+        regs[STB6100_VCO] &= ~STB6100_VCO_OCK;          /* VCO fast search              */
+        if ((rc = stb6100_write_reg(state, STB6100_VCO, regs[STB6100_VCO])) < 0)
+                return rc;
+
+        msleep(5);                                      /* wait for LO to lock          */
+        regs[STB6100_VCO] &= ~STB6100_VCO_OSCH;         /* vco search disabled          */
+        regs[STB6100_VCO] |= STB6100_VCO_OCK;           /* search clock off             */
+        if ((rc = stb6100_write_reg(state, STB6100_VCO, regs[STB6100_VCO])) < 0)
+                return rc;
+        regs[STB6100_FCCK] &= ~STB6100_FCCK_FCCK;       /* LPF BW clock disabled        */
+        if ((rc = stb6100_write_reg(state, STB6100_FCCK, regs[STB6100_FCCK])) < 0)
+                return rc;
+
+        return 0;
+}
+
+static int stb6100_sleep(struct dvb_frontend *fe)
+{
+        /* TODO: power down     */
+        return 0;
+}
+
+static int stb6100_init(struct dvb_frontend *fe)
+{
+        struct stb6100_state *state = fe->tuner_priv;
+        struct tuner_state *status = &state->status;
+
+        status->tunerstep       = 125000;
+        status->ifreq           = 0;
+        status->refclock        = 27000000;     /* Hz   */
+        status->iqsense         = 1;
+        status->bandwidth       = 36000;        /* kHz  */
+        state->bandwidth        = status->bandwidth * 1000;     /* MHz  */
+        state->reference        = status->refclock / 1000;      /* kHz  */
+
+        /* Set default bandwidth.       */
+        return stb6100_set_bandwidth(fe, status->bandwidth);
+}
+
+static int stb6100_get_state(struct dvb_frontend *fe,
+                             enum tuner_param param,
+                             struct tuner_state *state)
+{
+        switch (param) {
+        case DVBFE_TUNER_FREQUENCY:
+                stb6100_get_frequency(fe, &state->frequency);
+                break;
+        case DVBFE_TUNER_TUNERSTEP:
+                break;
+        case DVBFE_TUNER_IFFREQ:
+                break;
+        case DVBFE_TUNER_BANDWIDTH:
+                stb6100_get_bandwidth(fe, &state->bandwidth);
+                break;
+        case DVBFE_TUNER_REFCLOCK:
+                break;
+        default:
+                break;
+        }
+
+        return 0;
+}
+
+static int stb6100_set_state(struct dvb_frontend *fe,
+                             enum tuner_param param,
+                             struct tuner_state *state)
+{
+        struct stb6100_state *tstate = fe->tuner_priv;
+
+        switch (param) {
+        case DVBFE_TUNER_FREQUENCY:
+                stb6100_set_frequency(fe, state->frequency);
+                state->frequency = tstate->frequency;
+                break;
+        case DVBFE_TUNER_TUNERSTEP:
+                break;
+        case DVBFE_TUNER_IFFREQ:
+                break;
+        case DVBFE_TUNER_BANDWIDTH:
+                stb6100_set_bandwidth(fe, state->bandwidth);
+                state->bandwidth = tstate->bandwidth;
+                break;
+        case DVBFE_TUNER_REFCLOCK:
+                break;
+        default:
+                break;
+        }
+
+        return 0;
+}
+
+static struct dvb_tuner_ops stb6100_ops = {
+        .info = {
+                .name                   = "STB6100 Silicon Tuner",
+                .frequency_min          = 950000,
+                .frequency_max          = 2150000,
+                .frequency_step         = 0,
+        },
+
+        .init           = stb6100_init,
+        .sleep          = stb6100_sleep,
+        .get_status     = stb6100_get_status,
+        .get_state      = stb6100_get_state,
+        .set_state      = stb6100_set_state,
+        .get_frequency  = stb6100_get_frequency,
+        .get_bandwidth  = stb6100_get_bandwidth,
+        .release        = stb6100_release
+};
+
+struct dvb_frontend *stb6100_attach(struct dvb_frontend *fe,
+                                    struct stb6100_config *config,
+                                    struct i2c_adapter *i2c)
+{
+        struct stb6100_state *state = NULL;
+
+        state = kmalloc(sizeof (struct stb6100_state), GFP_KERNEL);
+        if (state == NULL)
+                goto error;
+
+        state->config           = config;
+        state->i2c              = i2c;
+        state->frontend         = fe;
+        state->reference        = config->refclock;
+        fe->tuner_priv          = state;
+        fe->ops.tuner_ops       = stb6100_ops;
+
+        printk("%s: Attaching\n", __func__);
+        return fe;
+
+error:
+        kfree(state);
+
+        return NULL;
+}
+
+static int stb6100_release(struct dvb_frontend *fe)
+{
+        struct stb6100_state *state = fe->tuner_priv;
+
+        fe->tuner_priv = NULL;
+        memset(&fe->ops.tuner_ops, 0, sizeof (fe->ops.tuner_ops));
+        kfree(state);
+
+        return 0;
+}
+
+EXPORT_SYMBOL(stb6100_attach);
+MODULE_PARM_DESC(verbose, "Set Verbosity level");
+
+MODULE_AUTHOR("Manu Abraham");
+MODULE_DESCRIPTION("STB6100 Silicon tuner");
+MODULE_LICENSE("GPL");
diff --git a/drivers/media/dvb/frontends/stb6100.h b/drivers/media/dvb/frontends/stb6100.h
new file mode 100644
index 000000000000..771914a8a1cc
--- /dev/null
+++ b/drivers/media/dvb/frontends/stb6100.h
@@ -0,0 +1,101 @@
+/*
+        STB6100 Silicon Tuner
+        Copyright (C) Manu Abraham (abraham.manu@gmail.com)
+
+        Copyright (C) ST Microelectronics
+
+        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 __STB_6100_REG_H
+#define __STB_6100_REG_H
+
+#include <linux/dvb/frontend.h>
+#include "dvb_frontend.h"
+
+#define STB6100_LD                      0x00
+#define STB6100_LD_LOCK                 (1 << 0)
+
+#define STB6100_VCO                     0x01
+#define STB6100_VCO_OSCH                (0x01 << 7)
+#define STB6100_VCO_OSCH_SHIFT          7
+#define STB6100_VCO_OCK                 (0x03 << 5)
+#define STB6100_VCO_OCK_SHIFT           5
+#define STB6100_VCO_ODIV                (0x01 << 4)
+#define STB6100_VCO_ODIV_SHIFT          4
+#define STB6100_VCO_OSM                 (0x0f << 0)
+
+#define STB6100_NI                      0x02
+#define STB6100_NF_LSB                  0x03
+
+#define STB6100_K                       0x04
+#define STB6100_K_PSD2                  (0x01 << 2)
+#define STB6100_K_PSD2_SHIFT            2
+#define STB6100_K_NF_MSB                (0x03 << 0)
+
+#define STB6100_G                       0x05
+#define STB6100_G_G                     (0x0f << 0)
+#define STB6100_G_GCT                   (0x07 << 5)
+
+#define STB6100_F                       0x06
+#define STB6100_F_F                     (0x1f << 0)
+
+#define STB6100_DLB                     0x07
+
+#define STB6100_TEST1                   0x08
+
+#define STB6100_FCCK                    0x09
+#define STB6100_FCCK_FCCK               (0x01 << 6)
+
+#define STB6100_LPEN                    0x0a
+#define STB6100_LPEN_LPEN               (0x01 << 4)
+#define STB6100_LPEN_SYNP               (0x01 << 5)
+#define STB6100_LPEN_OSCP               (0x01 << 6)
+#define STB6100_LPEN_BEN                (0x01 << 7)
+
+#define STB6100_TEST3                   0x0b
+
+#define STB6100_NUMREGS                 0x0c
+
+
+#define INRANGE(val, x, y)              (((x <= val) && (val <= y)) ||          \
+                                         ((y <= val) && (val <= x)) ? 1 : 0)
+
+#define CHKRANGE(val, x, y)             (((val >= x) && (val < y)) ? 1 : 0)
+
+struct stb6100_config {
+        u8      tuner_address;
+        u32     refclock;
+};
+
+struct stb6100_state {
+        struct i2c_adapter *i2c;
+
+        const struct stb6100_config     *config;
+        struct dvb_tuner_ops            ops;
+        struct dvb_frontend             *frontend;
+        struct tuner_state              status;
+
+        u32 frequency;
+        u32 srate;
+        u32 bandwidth;
+        u32 reference;
+};
+
+struct dvb_frontend *stb6100_attach(struct dvb_frontend *fe,
+                                    struct stb6100_config* config,
+                                    struct i2c_adapter *i2c);
+
+#endif