V4L/DVB (4524): Initial commit for the DiB7000M-demod

Initial commit for the driver for the DiB7000M COFDM demodulator.

Signed-off-by: Francois KANOUNNIKOFF <fkanounnikoff@dibcom.fr>
Signed-off-by: Patrick Boettcher <pboettcher@dibcom.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

4 files changed, 294 insertions, 0 deletions

diff --git a/drivers/media/dvb/dvb-usb/Kconfig b/drivers/media/dvb/dvb-usb/Kconfig
index a263b3f3c21d..a0aeaf4bbb37 100644
--- a/drivers/media/dvb/dvb-usb/Kconfig
+++ b/drivers/media/dvb/dvb-usb/Kconfig
@@ -69,6 +69,7 @@ config DVB_USB_DIBUSB_MC
 config DVB_USB_DIB0700
         tristate "DiBcom DiB0700 USB DVB devices (see help for supported devices)"
         depends on DVB_USB
+        select DVB_DIB7000M
         select DVB_DIB3000MC
         select DVB_TUNER_MT2060 if !DVB_FE_CUSTOMISE
         help
diff --git a/drivers/media/dvb/dvb-usb/dib0700_devices.c b/drivers/media/dvb/dvb-usb/dib0700_devices.c
index e473bfed226b..b4e339df72e5 100644
--- a/drivers/media/dvb/dvb-usb/dib0700_devices.c
+++ b/drivers/media/dvb/dvb-usb/dib0700_devices.c
@@ -9,6 +9,7 @@
 #include "dib0700.h"
 
 #include "dib3000mc.h"
+#include "dib7000m.h"
 #include "mt2060.h"
 
 static int force_lna_activation;
diff --git a/drivers/media/dvb/frontends/dib7000m.c b/drivers/media/dvb/frontends/dib7000m.c
new file mode 100644
index 000000000000..c9a57678fa34
--- /dev/null
+++ b/drivers/media/dvb/frontends/dib7000m.c
@@ -0,0 +1,242 @@
+/*
+ * Linux-DVB Driver for DiBcom's DiB7000M and
+ *              first generation DiB7000P-demodulator-family.
+ *
+ * Copyright (C) 2005-6 DiBcom (http://www.dibcom.fr/)
+ *
+ * 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, version 2.
+ */
+#include <linux/kernel.h>
+#include <linux/i2c.h>
+
+#include "dvb_frontend.h"
+
+#include "dib7000m.h"
+
+static int debug;
+module_param(debug, int, 0644);
+MODULE_PARM_DESC(debug, "turn on debugging (default: 0)");
+
+#define dprintk(args...) do { if (debug) { printk(KERN_DEBUG "DiB3000MC/P:"); printk(args); } } while (0)
+
+struct dib7000m_state {
+        struct dvb_frontend demod;
+    struct dib7000m_config cfg;
+
+        u8 i2c_addr;
+        struct i2c_adapter   *i2c_adap;
+
+        struct dibx000_i2c_master i2c_master;
+
+/* offset is 1 in case of the 7000MC */
+        u8 reg_offs;
+
+        u16 wbd_ref;
+
+        u8 current_band;
+        fe_bandwidth_t current_bandwidth;
+        struct dibx000_agc_config *current_agc;
+        u32 timf[9];
+
+        u16 revision;
+};
+
+static u16 dib7000m_read_word(struct dib7000m_state *state, u16 reg)
+{
+        u8 wb[2] = { (reg >> 8) | 0x80, reg & 0xff };
+        u8 rb[2];
+        struct i2c_msg msg[2] = {
+                { .addr = state->i2c_addr >> 1, .flags = 0,        .buf = wb, .len = 2 },
+                { .addr = state->i2c_addr >> 1, .flags = I2C_M_RD, .buf = rb, .len = 2 },
+        };
+
+        if (i2c_transfer(state->i2c_adap, msg, 2) != 2)
+                dprintk("i2c read error on %d\n",reg);
+
+        return (rb[0] << 8) | rb[1];
+}
+
+/*
+static int dib7000m_write_word(struct dib7000m_state *state, u16 reg, u16 val)
+{
+        u8 b[4] = {
+                (reg >> 8) & 0xff, reg & 0xff,
+                (val >> 8) & 0xff, val & 0xff,
+        };
+        struct i2c_msg msg = {
+                .addr = state->i2c_addr >> 1, .flags = 0, .buf = b, .len = 4
+        };
+        return i2c_transfer(state->i2c_adap, &msg, 1) != 1 ? -EREMOTEIO : 0;
+}
+*/
+
+static int dib7000m_get_frontend(struct dvb_frontend* fe,
+                                struct dvb_frontend_parameters *fep)
+{
+        struct dib7000m_state *state = fe->demodulator_priv;
+        u16 tps = dib7000m_read_word(state,480);
+
+        fep->inversion = INVERSION_AUTO;
+
+        fep->u.ofdm.bandwidth = state->current_bandwidth;
+
+        switch ((tps >> 8) & 0x2) {
+                case 0: fep->u.ofdm.transmission_mode = TRANSMISSION_MODE_2K; break;
+                case 1: fep->u.ofdm.transmission_mode = TRANSMISSION_MODE_8K; break;
+                /* case 2: fep->u.ofdm.transmission_mode = TRANSMISSION_MODE_4K; break; */
+        }
+
+        switch (tps & 0x3) {
+                case 0: fep->u.ofdm.guard_interval = GUARD_INTERVAL_1_32; break;
+                case 1: fep->u.ofdm.guard_interval = GUARD_INTERVAL_1_16; break;
+                case 2: fep->u.ofdm.guard_interval = GUARD_INTERVAL_1_8; break;
+                case 3: fep->u.ofdm.guard_interval = GUARD_INTERVAL_1_4; break;
+        }
+
+        switch ((tps >> 14) & 0x3) {
+                case 0: fep->u.ofdm.constellation = QPSK; break;
+                case 1: fep->u.ofdm.constellation = QAM_16; break;
+                case 2:
+                default: fep->u.ofdm.constellation = QAM_64; break;
+        }
+
+        /* as long as the frontend_param structure is fixed for hierarchical transmission I refuse to use it */
+        /* (tps >> 13) & 0x1 == hrch is used, (tps >> 10) & 0x7 == alpha */
+
+        fep->u.ofdm.hierarchy_information = HIERARCHY_NONE;
+        switch ((tps >> 5) & 0x7) {
+                case 1: fep->u.ofdm.code_rate_HP = FEC_1_2; break;
+                case 2: fep->u.ofdm.code_rate_HP = FEC_2_3; break;
+                case 3: fep->u.ofdm.code_rate_HP = FEC_3_4; break;
+                case 5: fep->u.ofdm.code_rate_HP = FEC_5_6; break;
+                case 7:
+                default: fep->u.ofdm.code_rate_HP = FEC_7_8; break;
+
+        }
+
+        switch ((tps >> 2) & 0x7) {
+                case 1: fep->u.ofdm.code_rate_LP = FEC_1_2; break;
+                case 2: fep->u.ofdm.code_rate_LP = FEC_2_3; break;
+                case 3: fep->u.ofdm.code_rate_LP = FEC_3_4; break;
+                case 5: fep->u.ofdm.code_rate_LP = FEC_5_6; break;
+                case 7:
+                default: fep->u.ofdm.code_rate_LP = FEC_7_8; break;
+        }
+
+        /* native interleaver: (dib7000m_read_word(state, 481) >>  5) & 0x1 */
+
+        return 0;
+}
+
+static int dib7000m_set_frontend(struct dvb_frontend* fe,
+                                struct dvb_frontend_parameters *fep)
+{
+        return 0;
+}
+
+static int dib7000m_read_status(struct dvb_frontend *fe, fe_status_t *stat)
+{
+        struct dib7000m_state *state = fe->demodulator_priv;
+        u16 lock = dib7000m_read_word(state, 509);
+
+        *stat = 0;
+
+        if (lock & 0x8000)
+                *stat |= FE_HAS_SIGNAL;
+        if (lock & 0x3000)
+                *stat |= FE_HAS_CARRIER;
+        if (lock & 0x0100)
+                *stat |= FE_HAS_VITERBI;
+        if (lock & 0x0010)
+                *stat |= FE_HAS_SYNC;
+        if (lock & 0x0008)
+                *stat |= FE_HAS_LOCK;
+
+        return 0;
+}
+
+static int dib7000m_read_ber(struct dvb_frontend *fe, u32 *ber)
+{
+        struct dib7000m_state *state = fe->demodulator_priv;
+        *ber = (dib7000m_read_word(state, 526) << 16) | dib7000m_read_word(state, 527);
+        return 0;
+}
+
+static int dib7000m_read_unc_blocks(struct dvb_frontend *fe, u32 *unc)
+{
+        struct dib7000m_state *state = fe->demodulator_priv;
+        *unc = dib7000m_read_word(state, 534);
+        return 0;
+}
+
+static int dib7000m_read_signal_strength(struct dvb_frontend *fe, u16 *strength)
+{
+        struct dib7000m_state *state = fe->demodulator_priv;
+        u16 val = dib7000m_read_word(state, 390);
+        *strength = 65535 - val;
+        return 0;
+}
+
+static int dib7000m_read_snr(struct dvb_frontend* fe, u16 *snr)
+{
+        *snr = 0x0000;
+        return 0;
+}
+
+static int dib7000m_fe_get_tune_settings(struct dvb_frontend* fe, struct dvb_frontend_tune_settings *tune)
+{
+        tune->min_delay_ms = 1000;
+        return 0;
+}
+
+static int dib7000m_init(struct dvb_frontend *fe)
+{
+        return 0;
+}
+
+static int dib7000m_sleep(struct dvb_frontend *fe)
+{
+        return 0;
+}
+
+static void dib7000m_release(struct dvb_frontend *fe)
+{ }
+
+static struct dvb_frontend_ops dib7000m_ops = {
+        .info = {
+                .name = "DiBcom 7000MA/MB/PA/PB/MC",
+                .type = FE_OFDM,
+                .frequency_min      = 44250000,
+                .frequency_max      = 867250000,
+                .frequency_stepsize = 62500,
+                .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 | FE_CAN_QAM_16 | FE_CAN_QAM_64 | FE_CAN_QAM_AUTO |
+                        FE_CAN_TRANSMISSION_MODE_AUTO |
+                        FE_CAN_GUARD_INTERVAL_AUTO |
+                        FE_CAN_RECOVER |
+                        FE_CAN_HIERARCHY_AUTO,
+        },
+
+        .release              = dib7000m_release,
+
+        .init                 = dib7000m_init,
+        .sleep                = dib7000m_sleep,
+
+        .set_frontend         = dib7000m_set_frontend,
+        .get_tune_settings    = dib7000m_fe_get_tune_settings,
+        .get_frontend         = dib7000m_get_frontend,
+
+        .read_status          = dib7000m_read_status,
+        .read_ber             = dib7000m_read_ber,
+        .read_signal_strength = dib7000m_read_signal_strength,
+        .read_snr             = dib7000m_read_snr,
+        .read_ucblocks        = dib7000m_read_unc_blocks,
+};
+
+MODULE_AUTHOR("Patrick Boettcher <pboettcher@dibcom.fr>");
+MODULE_DESCRIPTION("Driver for the DiBcom 7000MA/MB/PA/PB/MC COFDM demodulator");
+MODULE_LICENSE("GPL");
diff --git a/drivers/media/dvb/frontends/dib7000m.h b/drivers/media/dvb/frontends/dib7000m.h
new file mode 100644
index 000000000000..45990e3a5cee
--- /dev/null
+++ b/drivers/media/dvb/frontends/dib7000m.h
@@ -0,0 +1,50 @@
+#ifndef DIB7000M_H
+#define DIB7000M_H
+
+#include "dibx000_common.h"
+
+struct dib7000m_config {
+        u8 dvbt_mode;
+        u8 output_mpeg2_in_188_bytes;
+        u8 hostbus_diversity;
+        u8 tuner_is_baseband;
+        u8 mobile_mode;
+        int (*update_lna) (struct dvb_frontend *, u16 agc_global);
+
+        u8 agc_config_count;
+        struct dibx000_agc_config *agc;
+
+        struct dibx000_bandwidth_config *bw;
+
+#define DIB7000M_GPIO_DEFAULT_DIRECTIONS 0xffff
+        u16 gpio_dir;
+#define DIB7000M_GPIO_DEFAULT_VALUES     0x0000
+        u16 gpio_val;
+#define DIB7000M_GPIO_PWM_POS0(v)        ((v & 0xf) << 12)
+#define DIB7000M_GPIO_PWM_POS1(v)        ((v & 0xf) << 8 )
+#define DIB7000M_GPIO_PWM_POS2(v)        ((v & 0xf) << 4 )
+#define DIB7000M_GPIO_PWM_POS3(v)         (v & 0xf)
+#define DIB7000M_GPIO_DEFAULT_PWM_POS    0xffff
+        u16 gpio_pwm_pos;
+
+        u16 pwm_freq_div;
+
+        u8 quartz_direct;
+
+        u8 input_clk_is_div_2;
+};
+
+#define DEFAULT_DIB7000M_I2C_ADDRESS 18
+
+extern int dib7000m_attach(struct i2c_adapter *i2c_adap, int no_of_demods, u8 default_addr , u8 do_i2c_enum, struct dib7000m_config[], struct dvb_frontend*[]);
+
+extern struct i2c_adapter * dib7000m_get_i2c_master(struct dvb_frontend *, enum dibx000_i2c_interface, int);
+
+/* TODO
+extern INT dib7000m_set_gpio(struct dibDemod *demod, UCHAR num, UCHAR dir, UCHAR val);
+extern INT dib7000m_enable_vbg_voltage(struct dibDemod *demod);
+extern void dib7000m_set_hostbus_diversity(struct dibDemod *demod, UCHAR onoff);
+extern USHORT dib7000m_get_current_agc_global(struct dibDemod *demod);
+*/
+
+#endif