23  * This driver needs external firmware. Please use the command
25  * download/extract it, and then copy it to /usr/lib/hotplug/firmware
26  * or /lib/firmware (depending on configuration of firmware hotplug).
28 #define SP8870_DEFAULT_FIRMWARE "dvb-fe-sp8870.fw"
33 #include <linux/firmware.h>
51 	u8 initialised:1;  member
60 /* firmware size for sp8870 */
63 /* starting point for firmware in file 'Sc_main.mc' */
69 	struct i2c_msg msg = { .addr = state->config->demod_address, .flags = 0, .buf = buf, .len = 4 };  in sp8870_writereg()
72 	if ((err = i2c_transfer (state->i2c, &msg, 1)) != 1) {  in sp8870_writereg()
74 		return -EREMOTEIO;  in sp8870_writereg()
85 …struct i2c_msg msg [] = { { .addr = state->config->demod_address, .flags = 0, .buf = b0, .len = 2 …  in sp8870_readreg()
86 			   { .addr = state->config->demod_address, .flags = I2C_M_RD, .buf = b1, .len = 2 } };  in sp8870_readreg()
88 	ret = i2c_transfer (state->i2c, msg, 2);  in sp8870_readreg()
92 		return -1;  in sp8870_readreg()
98 static int sp8870_firmware_upload (struct sp8870_state* state, const struct firmware *fw)  in sp8870_firmware_upload()
101 	const char *fw_buf = fw->data;  in sp8870_firmware_upload()
109 	if (fw->size < SP8870_FIRMWARE_SIZE + SP8870_FIRMWARE_OFFSET)  in sp8870_firmware_upload()
110 		return -EINVAL;  in sp8870_firmware_upload()
121 	// do firmware upload  in sp8870_firmware_upload()
124 …P8870_FIRMWARE_SIZE + SP8870_FIRMWARE_OFFSET - 252) ? 252 : SP8870_FIRMWARE_SIZE + SP8870_FIRMWARE…  in sp8870_firmware_upload()
129 		msg.addr = state->config->demod_address;  in sp8870_firmware_upload()
133 		if ((err = i2c_transfer (state->i2c, &msg, 1)) != 1) {  in sp8870_firmware_upload()
134 			printk("%s: firmware upload failed!\n", __func__);  in sp8870_firmware_upload()
177 	switch (p->modulation) {  in configure_reg0xc05()
190 		return -EINVAL;  in configure_reg0xc05()
193 	switch (p->hierarchy) {  in configure_reg0xc05()
209 		return -EINVAL;  in configure_reg0xc05()
212 	switch (p->code_rate_HP) {  in configure_reg0xc05()
231 		return -EINVAL;  in configure_reg0xc05()
250 	struct dtv_frontend_properties *p = &fe->dtv_property_cache;  in sp8870_set_frontend_parameters()
251 	struct sp8870_state* state = fe->demodulator_priv;  in sp8870_set_frontend_parameters()
262 	if (fe->ops.tuner_ops.set_params) {  in sp8870_set_frontend_parameters()
263 		fe->ops.tuner_ops.set_params(fe);  in sp8870_set_frontend_parameters()
264 		if (fe->ops.i2c_gate_ctrl) fe->ops.i2c_gate_ctrl(fe, 0);  in sp8870_set_frontend_parameters()
280 	if (p->bandwidth_hz == 6000000)  in sp8870_set_frontend_parameters()
282 	else if (p->bandwidth_hz == 7000000)  in sp8870_set_frontend_parameters()
288 	if (p->transmission_mode == TRANSMISSION_MODE_2K)  in sp8870_set_frontend_parameters()
306 	struct sp8870_state* state = fe->demodulator_priv;  in sp8870_init()
307 	const struct firmware *fw = NULL;  in sp8870_init()
310 	if (state->initialised) return 0;  in sp8870_init()
311 	state->initialised = 1;  in sp8870_init()
316 	/* request the firmware, this will block until someone uploads it */  in sp8870_init()
317 	printk("sp8870: waiting for firmware upload (%s)...\n", SP8870_DEFAULT_FIRMWARE);  in sp8870_init()
318 	if (state->config->request_firmware(fe, &fw, SP8870_DEFAULT_FIRMWARE)) {  in sp8870_init()
319 		printk("sp8870: no firmware upload (timeout or file not found?)\n");  in sp8870_init()
320 		return -EIO;  in sp8870_init()
324 		printk("sp8870: writing firmware to device failed\n");  in sp8870_init()
326 		return -EIO;  in sp8870_init()
329 	printk("sp8870: firmware upload complete\n");  in sp8870_init()
356 	struct sp8870_state* state = fe->demodulator_priv;  in sp8870_read_status()
364 		return -EIO;  in sp8870_read_status()
368 		return -EIO;  in sp8870_read_status()
382 	struct sp8870_state* state = fe->demodulator_priv;  in sp8870_read_ber()
390 		return -EIO;  in sp8870_read_ber()
396 		return -EIO;  in sp8870_read_ber()
409 	struct sp8870_state* state = fe->demodulator_priv;  in sp8870_read_signal_strength()
417 		return -EIO;  in sp8870_read_signal_strength()
423 		return -EIO;  in sp8870_read_signal_strength()
428 		*signal = 0xFFFF - tmp;  in sp8870_read_signal_strength()
435 	struct sp8870_state* state = fe->demodulator_priv;  in sp8870_read_uncorrected_blocks()
442 		return -EIO;  in sp8870_read_uncorrected_blocks()
464 	struct dtv_frontend_properties *p = &fe->dtv_property_cache;  in sp8870_set_frontend()
465 	struct sp8870_state* state = fe->demodulator_priv;  in sp8870_set_frontend()
468 	    The firmware of the sp8870 sometimes locks up after setting frontend parameters.  in sp8870_set_frontend()
479 	dprintk("%s: frequency = %i\n", __func__, p->frequency);  in sp8870_set_frontend()
502 		printk("%s: firmware crash!!!!!!\n", __func__);  in sp8870_set_frontend()
503 		return -EIO;  in sp8870_set_frontend()
509 				printk("%s: firmware lockup!!!\n", __func__);  in sp8870_set_frontend()
510 				printk("%s: recovered after %i trial(s))\n",  __func__, trials - 1);  in sp8870_set_frontend()
523 	struct sp8870_state* state = fe->demodulator_priv;  in sp8870_sleep()
531 	fesettings->min_delay_ms = 350;  in sp8870_get_tune_settings()
532 	fesettings->step_size = 0;  in sp8870_get_tune_settings()
533 	fesettings->max_drift = 0;  in sp8870_get_tune_settings()
539 	struct sp8870_state* state = fe->demodulator_priv;  in sp8870_i2c_gate_ctrl()
550 	struct sp8870_state* state = fe->demodulator_priv;  in sp8870_release()
566 	state->config = config;  in sp8870_attach()
567 	state->i2c = i2c;  in sp8870_attach()
568 	state->initialised = 0;  in sp8870_attach()
574 	memcpy(&state->frontend.ops, &sp8870_ops, sizeof(struct dvb_frontend_ops));  in sp8870_attach()
575 	state->frontend.demodulator_priv = state;  in sp8870_attach()
576 	return &state->frontend;  in sp8870_attach()
586 		.name			= "Spase SP8870 DVB-T",
616 MODULE_DESCRIPTION("Spase SP8870 DVB-T Demodulator driver");