--- /dev/null
+/*
+ * Fujitu mb86a20s ISDB-T/ISDB-Tsb Module driver
+ *
+ * Copyright (C) 2010 Mauro Carvalho Chehab <mchehab@redhat.com>
+ * Copyright (C) 2009-2010 Douglas Landgraf <dougsland@redhat.com>
+ *
+ * FIXME: Need to port to DVB v5.2 API
+ *
+ * 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.
+ *
+ * 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.
+ */
+
+#include <linux/kernel.h>
+#include <asm/div64.h>
+
+#include "dvb_frontend.h"
+#include "mb86a20s.h"
+
+static int debug = 1;
+module_param(debug, int, 0644);
+MODULE_PARM_DESC(debug, "Activates frontend debugging (default:0)");
+
+#define rc(args...) do { \
+ printk(KERN_ERR "mb86a20s: " args); \
+} while (0)
+
+#define dprintk(args...) \
+ do { \
+ if (debug) { \
+ printk(KERN_DEBUG "mb86a20s: %s: ", __func__); \
+ printk(args); \
+ } \
+ } while (0)
+
+struct mb86a20s_state {
+ struct i2c_adapter *i2c;
+ const struct mb86a20s_config *config;
+
+ struct dvb_frontend frontend;
+
+
+
+
+};
+
+struct regdata {
+ u8 reg;
+ u8 data;
+};
+
+/*
+ * Initialization sequence: Use whatevere default values that PV SBTVD
+ * does on its initialisation, obtained via USB snoop
+ */
+static struct regdata mb86a20s_init[] = {
+ { 0x70, 0x0f },
+ { 0x70, 0xff },
+ { 0x08, 0x01 },
+ { 0x09, 0x3e },
+ { 0x50, 0xd1 },
+ { 0x51, 0x22 },
+ { 0x39, 0x01 },
+ { 0x71, 0x00 },
+ { 0x28, 0x2a },
+ { 0x29, 0x00 },
+ { 0x2a, 0xff },
+ { 0x2b, 0x80 },
+ { 0x28, 0x20 },
+ { 0x29, 0x33 },
+ { 0x2a, 0xdf },
+ { 0x2b, 0xa9 },
+ { 0x3b, 0x21 },
+ { 0x3c, 0x3a },
+ { 0x01, 0x0d },
+ { 0x04, 0x08 },
+ { 0x05, 0x05 },
+ { 0x04, 0x0e },
+ { 0x05, 0x00 },
+ { 0x04, 0x0f },
+ { 0x05, 0x14 },
+ { 0x04, 0x0b },
+ { 0x05, 0x8c },
+ { 0x04, 0x00 },
+ { 0x05, 0x00 },
+ { 0x04, 0x01 },
+ { 0x05, 0x07 },
+ { 0x04, 0x02 },
+ { 0x05, 0x0f },
+ { 0x04, 0x03 },
+ { 0x05, 0xa0 },
+ { 0x04, 0x09 },
+ { 0x05, 0x00 },
+ { 0x04, 0x0a },
+ { 0x05, 0xff },
+ { 0x04, 0x27 },
+ { 0x05, 0x64 },
+ { 0x04, 0x28 },
+ { 0x05, 0x00 },
+ { 0x04, 0x1e },
+ { 0x05, 0xff },
+ { 0x04, 0x29 },
+ { 0x05, 0x0a },
+ { 0x04, 0x32 },
+ { 0x05, 0x0a },
+ { 0x04, 0x14 },
+ { 0x05, 0x02 },
+ { 0x04, 0x04 },
+ { 0x05, 0x00 },
+ { 0x04, 0x05 },
+ { 0x05, 0x22 },
+ { 0x04, 0x06 },
+ { 0x05, 0x0e },
+ { 0x04, 0x07 },
+ { 0x05, 0xd8 },
+ { 0x04, 0x12 },
+ { 0x05, 0x00 },
+ { 0x04, 0x13 },
+ { 0x05, 0xff },
+ { 0x52, 0x01 },
+ { 0x50, 0xa7 },
+ { 0x51, 0x00 },
+ { 0x50, 0xa8 },
+ { 0x51, 0xff },
+ { 0x50, 0xa9 },
+ { 0x51, 0xff },
+ { 0x50, 0xaa },
+ { 0x51, 0x00 },
+ { 0x50, 0xab },
+ { 0x51, 0xff },
+ { 0x50, 0xac },
+ { 0x51, 0xff },
+ { 0x50, 0xad },
+ { 0x51, 0x00 },
+ { 0x50, 0xae },
+ { 0x51, 0xff },
+ { 0x50, 0xaf },
+ { 0x51, 0xff },
+ { 0x5e, 0x07 },
+ { 0x50, 0xdc },
+ { 0x51, 0x01 },
+ { 0x50, 0xdd },
+ { 0x51, 0xf4 },
+ { 0x50, 0xde },
+ { 0x51, 0x01 },
+ { 0x50, 0xdf },
+ { 0x51, 0xf4 },
+ { 0x50, 0xe0 },
+ { 0x51, 0x01 },
+ { 0x50, 0xe1 },
+ { 0x51, 0xf4 },
+ { 0x50, 0xb0 },
+ { 0x51, 0x07 },
+ { 0x50, 0xb2 },
+ { 0x51, 0xff },
+ { 0x50, 0xb3 },
+ { 0x51, 0xff },
+ { 0x50, 0xb4 },
+ { 0x51, 0xff },
+ { 0x50, 0xb5 },
+ { 0x51, 0xff },
+ { 0x50, 0xb6 },
+ { 0x51, 0xff },
+ { 0x50, 0xb7 },
+ { 0x51, 0xff },
+ { 0x50, 0x50 },
+ { 0x51, 0x02 },
+ { 0x50, 0x51 },
+ { 0x51, 0x04 },
+ { 0x45, 0x04 },
+ { 0x48, 0x04 },
+ { 0x50, 0xd5 },
+ { 0x51, 0x01 },
+ { 0x50, 0xd6 },
+ { 0x51, 0x1f },
+ { 0x50, 0xd2 },
+ { 0x51, 0x03 },
+ { 0x50, 0xd7 },
+ { 0x51, 0x3f },
+ { 0x1c, 0x01 },
+ { 0x28, 0x06 },
+ { 0x29, 0x00 },
+ { 0x2a, 0x00 },
+ { 0x2b, 0x03 },
+ { 0x28, 0x07 },
+ { 0x29, 0x00 },
+ { 0x2a, 0x00 },
+ { 0x2b, 0x0d },
+ { 0x28, 0x08 },
+ { 0x29, 0x00 },
+ { 0x2a, 0x00 },
+ { 0x2b, 0x02 },
+ { 0x28, 0x09 },
+ { 0x29, 0x00 },
+ { 0x2a, 0x00 },
+ { 0x2b, 0x01 },
+ { 0x28, 0x0a },
+ { 0x29, 0x00 },
+ { 0x2a, 0x00 },
+ { 0x2b, 0x21 },
+ { 0x28, 0x0b },
+ { 0x29, 0x00 },
+ { 0x2a, 0x00 },
+ { 0x2b, 0x29 },
+ { 0x28, 0x0c },
+ { 0x29, 0x00 },
+ { 0x2a, 0x00 },
+ { 0x2b, 0x16 },
+ { 0x28, 0x0d },
+ { 0x29, 0x00 },
+ { 0x2a, 0x00 },
+ { 0x2b, 0x31 },
+ { 0x28, 0x0e },
+ { 0x29, 0x00 },
+ { 0x2a, 0x00 },
+ { 0x2b, 0x0e },
+ { 0x28, 0x0f },
+ { 0x29, 0x00 },
+ { 0x2a, 0x00 },
+ { 0x2b, 0x4e },
+ { 0x28, 0x10 },
+ { 0x29, 0x00 },
+ { 0x2a, 0x00 },
+ { 0x2b, 0x46 },
+ { 0x28, 0x11 },
+ { 0x29, 0x00 },
+ { 0x2a, 0x00 },
+ { 0x2b, 0x0f },
+ { 0x28, 0x12 },
+ { 0x29, 0x00 },
+ { 0x2a, 0x00 },
+ { 0x2b, 0x56 },
+ { 0x28, 0x13 },
+ { 0x29, 0x00 },
+ { 0x2a, 0x00 },
+ { 0x2b, 0x35 },
+ { 0x28, 0x14 },
+ { 0x29, 0x00 },
+ { 0x2a, 0x01 },
+ { 0x2b, 0xbe },
+ { 0x28, 0x15 },
+ { 0x29, 0x00 },
+ { 0x2a, 0x01 },
+ { 0x2b, 0x84 },
+ { 0x28, 0x16 },
+ { 0x29, 0x00 },
+ { 0x2a, 0x03 },
+ { 0x2b, 0xee },
+ { 0x28, 0x17 },
+ { 0x29, 0x00 },
+ { 0x2a, 0x00 },
+ { 0x2b, 0x98 },
+ { 0x28, 0x18 },
+ { 0x29, 0x00 },
+ { 0x2a, 0x00 },
+ { 0x2b, 0x9f },
+ { 0x28, 0x19 },
+ { 0x29, 0x00 },
+ { 0x2a, 0x07 },
+ { 0x2b, 0xb2 },
+ { 0x28, 0x1a },
+ { 0x29, 0x00 },
+ { 0x2a, 0x06 },
+ { 0x2b, 0xc2 },
+ { 0x28, 0x1b },
+ { 0x29, 0x00 },
+ { 0x2a, 0x07 },
+ { 0x2b, 0x4a },
+ { 0x28, 0x1c },
+ { 0x29, 0x00 },
+ { 0x2a, 0x01 },
+ { 0x2b, 0xbc },
+ { 0x28, 0x1d },
+ { 0x29, 0x00 },
+ { 0x2a, 0x04 },
+ { 0x2b, 0xba },
+ { 0x28, 0x1e },
+ { 0x29, 0x00 },
+ { 0x2a, 0x06 },
+ { 0x2b, 0x14 },
+ { 0x50, 0x1e },
+ { 0x51, 0x5d },
+ { 0x50, 0x22 },
+ { 0x51, 0x00 },
+ { 0x50, 0x23 },
+ { 0x51, 0xc8 },
+ { 0x50, 0x24 },
+ { 0x51, 0x00 },
+ { 0x50, 0x25 },
+ { 0x51, 0xf0 },
+ { 0x50, 0x26 },
+ { 0x51, 0x00 },
+ { 0x50, 0x27 },
+ { 0x51, 0xc3 },
+ { 0x50, 0x39 },
+ { 0x51, 0x02 },
+ { 0x50, 0xd5 },
+ { 0x51, 0x01 },
+ { 0xd0, 0x00 },
+};
+
+static struct regdata mb86a20s_reset_reception[] = {
+ { 0x70, 0xf0 },
+ { 0x70, 0xff },
+ { 0x08, 0x01 },
+ { 0x08, 0x00 },
+};
+
+static int mb86a20s_i2c_writereg(struct mb86a20s_state *state,
+ u8 i2c_addr, int reg, int data)
+{
+ u8 buf[] = { reg, data };
+ struct i2c_msg msg = {
+ .addr = i2c_addr, .flags = 0, .buf = buf, .len = 2
+ };
+ int rc;
+
+ rc = i2c_transfer(state->i2c, &msg, 1);
+ if (rc != 1) {
+ printk("%s: writereg rcor(rc == %i, reg == 0x%02x,"
+ " data == 0x%02x)\n", __func__, rc, reg, data);
+ return rc;
+ }
+
+ return 0;
+}
+
+static int mb86a20s_i2c_writeregdata(struct mb86a20s_state *state,
+ u8 i2c_addr, struct regdata *rd, int size)
+{
+ int i, rc;
+
+ for (i = 0; i < size; i++) {
+ rc = mb86a20s_i2c_writereg(state, i2c_addr, rd[i].reg,
+ rd[i].data);
+ if (rc < 0)
+ return rc;
+ }
+ return 0;
+}
+
+static int mb86a20s_i2c_readreg(struct mb86a20s_state *state,
+ u8 i2c_addr, u8 reg)
+{
+ u8 val;
+ int rc;
+ struct i2c_msg msg[] = {
+ { .addr = i2c_addr, .flags = 0, .buf = ®, .len = 1 },
+ { .addr = i2c_addr, .flags = I2C_M_RD, .buf = &val, .len = 1 }
+ };
+
+ rc = i2c_transfer(state->i2c, msg, 2);
+
+ if (rc != 2) {
+ rc("%s: reg=0x%x (rcor=%d)\n", __func__, reg, rc);
+ return rc;
+ }
+
+ return val;
+}
+
+#define mb86a20s_readreg(state, reg) \
+ mb86a20s_i2c_readreg(state, state->config->demod_address, reg)
+#define mb86a20s_writereg(state, reg, val) \
+ mb86a20s_i2c_writereg(state, state->config->demod_address, reg, val)
+#define mb86a20s_writeregdata(state, regdata) \
+ mb86a20s_i2c_writeregdata(state, state->config->demod_address, \
+ regdata, ARRAY_SIZE(regdata))
+
+static int mb86a20s_initfe(struct dvb_frontend *fe)
+{
+ struct mb86a20s_state *state = fe->demodulator_priv;
+ int rc;
+
+ dprintk("\n");
+
+ /* Initialize the frontend */
+ rc = mb86a20s_writeregdata(state, mb86a20s_init);
+ if (rc < 0)
+ return rc;
+
+ return 0;
+}
+
+static int mb86a20s_read_signal_strength(struct dvb_frontend *fe, u16 *strength)
+{
+ struct mb86a20s_state *state = fe->demodulator_priv;
+ unsigned rf_max, rf_min, rf;
+ u8 val;
+
+ dprintk("\n");
+
+ /* Does a binary search to get RF strength */
+ rf_max = 0xfff;
+ rf_min = 0;
+ do {
+ rf = (rf_max + rf_min) / 2;
+ mb86a20s_writereg(state, 0x04, 0x1f);
+ mb86a20s_writereg(state, 0x05, rf >> 8);
+ mb86a20s_writereg(state, 0x04, 0x20);
+ mb86a20s_writereg(state, 0x04, rf);
+
+ val = mb86a20s_readreg(state, 0x02);
+ if (val & 0x08)
+ rf_min = (rf_max + rf_min) / 2;
+ else
+ rf_max = (rf_max + rf_min) / 2;
+ if (rf_max - rf_min < 4) {
+ *strength = (((rf_max + rf_min) / 2) * 65535) / 4095;
+ break;
+ }
+ } while (1);
+
+ dprintk("signal strength = %d\n", *strength);
+
+ return 0;
+}
+
+static int mb86a20s_read_status(struct dvb_frontend *fe, fe_status_t *status)
+{
+ struct mb86a20s_state *state = fe->demodulator_priv;
+ u8 val;
+
+ dprintk("\n");
+ *status = 0;
+
+ val = mb86a20s_readreg(state, 0x0a) & 0xf;
+
+ if (val >= 2)
+ *status |= FE_HAS_SIGNAL;
+
+ if (val >= 4)
+ *status |= FE_HAS_CARRIER;
+
+ if (val >= 5)
+ *status |= FE_HAS_VITERBI;
+
+ if (val >= 7)
+ *status |= FE_HAS_SYNC;
+
+ if (val >= 8) /* Maybe 9? */
+ *status |= FE_HAS_LOCK;
+
+ dprintk("val = %d, status = 0x%02x\n", val, *status);
+
+ return 0;
+}
+
+static int mb86a20s_set_frontend(struct dvb_frontend *fe,
+ struct dvb_frontend_parameters *p)
+{
+ struct mb86a20s_state *state = fe->demodulator_priv;
+ int rc;
+
+ dprintk("\n");
+
+ fe->ops.tuner_ops.set_params(fe, p);
+ rc = mb86a20s_writeregdata(state, mb86a20s_reset_reception);
+
+ return rc;
+}
+
+static int mb86a20s_get_frontend(struct dvb_frontend *fe,
+ struct dvb_frontend_parameters *p)
+{
+
+ /* FIXME: For now, it does nothing */
+
+ fe->dtv_property_cache.bandwidth_hz = 6000000;
+ fe->dtv_property_cache.transmission_mode = TRANSMISSION_MODE_AUTO;
+ fe->dtv_property_cache.guard_interval = GUARD_INTERVAL_AUTO;
+ fe->dtv_property_cache.isdbt_partial_reception = 0;
+
+ return 0;
+}
+
+static int mb86a20s_tune(struct dvb_frontend *fe,
+ struct dvb_frontend_parameters *params,
+ unsigned int mode_flags,
+ unsigned int *delay,
+ fe_status_t *status)
+{
+ int rc = 0;
+
+ dprintk("\n");
+
+ if (params != NULL)
+ rc = mb86a20s_set_frontend(fe, params);
+
+ if (!(mode_flags & FE_TUNE_MODE_ONESHOT))
+ mb86a20s_read_status(fe, status);
+
+ return rc;
+}
+
+static void mb86a20s_release(struct dvb_frontend *fe)
+{
+ struct mb86a20s_state *state = fe->demodulator_priv;
+
+ dprintk("\n");
+
+ kfree(state);
+}
+
+static struct dvb_frontend_ops mb86a20s_ops;
+
+struct dvb_frontend *mb86a20s_attach(const struct mb86a20s_config *config,
+ struct i2c_adapter *i2c)
+{
+ u8 rev;
+
+ /* allocate memory for the internal state */
+ struct mb86a20s_state *state =
+ kzalloc(sizeof(struct mb86a20s_state), GFP_KERNEL);
+
+ dprintk("\n");
+ if (state == NULL) {
+ rc("Unable to kzalloc\n");
+ goto error;
+ }
+
+ /* setup the state */
+ state->config = config;
+ state->i2c = i2c;
+
+ /* create dvb_frontend */
+ memcpy(&state->frontend.ops, &mb86a20s_ops,
+ sizeof(struct dvb_frontend_ops));
+ state->frontend.demodulator_priv = state;
+
+ /* Check if it is a mb86a20s frontend */
+ rev = mb86a20s_readreg(state, 0);
+
+ if (rev == 0x13) {
+ printk(KERN_INFO "Detected a Fujitsu mb86a20s frontend\n");
+ } else {
+ printk(KERN_ERR "Frontend revision %d is unknown - aborting.\n",
+ rev);
+ goto error;
+ }
+
+ return &state->frontend;
+
+error:
+ kfree(state);
+ return NULL;
+}
+EXPORT_SYMBOL(mb86a20s_attach);
+
+static struct dvb_frontend_ops mb86a20s_ops = {
+ /* Use dib8000 values per default */
+ .info = {
+ .name = "Fujitsu mb86A20s",
+ .type = FE_OFDM,
+ .caps = FE_CAN_INVERSION_AUTO | FE_CAN_RECOVER |
+ 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_TRANSMISSION_MODE_AUTO | FE_CAN_QAM_AUTO |
+ FE_CAN_GUARD_INTERVAL_AUTO | FE_CAN_HIERARCHY_AUTO,
+ /* Actually, those values depend on the used tuner */
+ .frequency_min = 45000000,
+ .frequency_max = 864000000,
+ .frequency_stepsize = 62500,
+ },
+
+ .release = mb86a20s_release,
+
+ .init = mb86a20s_initfe,
+ .set_frontend = mb86a20s_set_frontend,
+ .get_frontend = mb86a20s_get_frontend,
+ .read_status = mb86a20s_read_status,
+ .read_signal_strength = mb86a20s_read_signal_strength,
+ .tune = mb86a20s_tune,
+};
+
+MODULE_DESCRIPTION("DVB Frontend module for Fujitsu mb86A20s hardware");
+MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@redhat.com>");
+MODULE_LICENSE("GPL");
projects / karo-tx-linux.git / commitdiff