drivers/media/usb/dvb-usb/dib0700_devices.c

Source file repositories/reference/linux-study-clean/drivers/media/usb/dvb-usb/dib0700_devices.c

File Facts

System
Linux kernel
Corpus path
drivers/media/usb/dvb-usb/dib0700_devices.c
Extension
.c
Size
146057 bytes
Lines
5249
Domain
Driver Families
Bucket
drivers/media
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

struct dib0700_adapter_state {
	int (*set_param_save) (struct dvb_frontend *);
	const struct firmware *frontend_firmware;
	struct dib7000p_ops dib7000p_ops;
	struct dib8000_ops dib8000_ops;
};

/* Hauppauge Nova-T 500 (aka Bristol)
 *  has a LNA on GPIO0 which is enabled by setting 1 */
static struct mt2060_config bristol_mt2060_config[2] = {
	{
		.i2c_address = 0x60,
		.clock_out   = 3,
	}, {
		.i2c_address = 0x61,
	}
};


static struct dibx000_agc_config bristol_dib3000p_mt2060_agc_config = {
	.band_caps = BAND_VHF | BAND_UHF,
	.setup     = (1 << 8) | (5 << 5) | (0 << 4) | (0 << 3) | (0 << 2) | (2 << 0),

	.agc1_max = 42598,
	.agc1_min = 17694,
	.agc2_max = 45875,
	.agc2_min = 0,

	.agc1_pt1 = 0,
	.agc1_pt2 = 59,

	.agc1_slope1 = 0,
	.agc1_slope2 = 69,

	.agc2_pt1 = 0,
	.agc2_pt2 = 59,

	.agc2_slope1 = 111,
	.agc2_slope2 = 28,
};

static struct dib3000mc_config bristol_dib3000mc_config[2] = {
	{	.agc          = &bristol_dib3000p_mt2060_agc_config,
		.max_time     = 0x196,
		.ln_adc_level = 0x1cc7,
		.output_mpeg2_in_188_bytes = 1,
	},
	{	.agc          = &bristol_dib3000p_mt2060_agc_config,
		.max_time     = 0x196,
		.ln_adc_level = 0x1cc7,
		.output_mpeg2_in_188_bytes = 1,
	}
};

static int bristol_frontend_attach(struct dvb_usb_adapter *adap)
{
	struct dib0700_state *st = adap->dev->priv;
	if (adap->id == 0) {
		dib0700_set_gpio(adap->dev, GPIO6,  GPIO_OUT, 0); msleep(10);
		dib0700_set_gpio(adap->dev, GPIO6,  GPIO_OUT, 1); msleep(10);
		dib0700_set_gpio(adap->dev, GPIO10, GPIO_OUT, 0); msleep(10);
		dib0700_set_gpio(adap->dev, GPIO10, GPIO_OUT, 1); msleep(10);

		if (force_lna_activation)
			dib0700_set_gpio(adap->dev, GPIO0, GPIO_OUT, 1);
		else
			dib0700_set_gpio(adap->dev, GPIO0, GPIO_OUT, 0);

		if (dib3000mc_i2c_enumeration(&adap->dev->i2c_adap, 2, DEFAULT_DIB3000P_I2C_ADDRESS, bristol_dib3000mc_config) != 0) {
			dib0700_set_gpio(adap->dev, GPIO6, GPIO_OUT, 0); msleep(10);
			return -ENODEV;
		}
	}
	st->mt2060_if1[adap->id] = 1220;
	return (adap->fe_adap[0].fe = dvb_attach(dib3000mc_attach, &adap->dev->i2c_adap,
		(10 + adap->id) << 1, &bristol_dib3000mc_config[adap->id])) == NULL ? -ENODEV : 0;
}

static int eeprom_read(struct i2c_adapter *adap,u8 adrs,u8 *pval)
{
	struct i2c_msg msg[2] = {
		{ .addr = 0x50, .flags = 0,        .buf = &adrs, .len = 1 },
		{ .addr = 0x50, .flags = I2C_M_RD, .buf = pval,  .len = 1 },
	};
	if (i2c_transfer(adap, msg, 2) != 2) return -EREMOTEIO;
	return 0;
}

static int bristol_tuner_attach(struct dvb_usb_adapter *adap)
{

Annotation

Implementation Notes