drivers/media/tuners/tda18271-common.c

Source file repositories/reference/linux-study-clean/drivers/media/tuners/tda18271-common.c

File Facts

System
Linux kernel
Corpus path
drivers/media/tuners/tda18271-common.c
Extension
.c
Size
18656 bytes
Lines
727
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

switch (priv->mode) {
		case TDA18271_DIGITAL:
			gate = TDA18271_GATE_DIGITAL;
			break;
		case TDA18271_ANALOG:
		default:
			gate = TDA18271_GATE_ANALOG;
			break;
		}
	}

	switch (gate) {
	case TDA18271_GATE_ANALOG:
		if (fe->ops.analog_ops.i2c_gate_ctrl)
			ret = fe->ops.analog_ops.i2c_gate_ctrl(fe, enable);
		break;
	case TDA18271_GATE_DIGITAL:
		if (fe->ops.i2c_gate_ctrl)
			ret = fe->ops.i2c_gate_ctrl(fe, enable);
		break;
	default:
		ret = -EINVAL;
		break;
	}

	return ret;
};

/*---------------------------------------------------------------------*/

static void tda18271_dump_regs(struct dvb_frontend *fe, int extended)
{
	struct tda18271_priv *priv = fe->tuner_priv;
	unsigned char *regs = priv->tda18271_regs;

	tda_reg("=== TDA18271 REG DUMP ===\n");
	tda_reg("ID_BYTE            = 0x%02x\n", 0xff & regs[R_ID]);
	tda_reg("THERMO_BYTE        = 0x%02x\n", 0xff & regs[R_TM]);
	tda_reg("POWER_LEVEL_BYTE   = 0x%02x\n", 0xff & regs[R_PL]);
	tda_reg("EASY_PROG_BYTE_1   = 0x%02x\n", 0xff & regs[R_EP1]);
	tda_reg("EASY_PROG_BYTE_2   = 0x%02x\n", 0xff & regs[R_EP2]);
	tda_reg("EASY_PROG_BYTE_3   = 0x%02x\n", 0xff & regs[R_EP3]);
	tda_reg("EASY_PROG_BYTE_4   = 0x%02x\n", 0xff & regs[R_EP4]);
	tda_reg("EASY_PROG_BYTE_5   = 0x%02x\n", 0xff & regs[R_EP5]);
	tda_reg("CAL_POST_DIV_BYTE  = 0x%02x\n", 0xff & regs[R_CPD]);
	tda_reg("CAL_DIV_BYTE_1     = 0x%02x\n", 0xff & regs[R_CD1]);
	tda_reg("CAL_DIV_BYTE_2     = 0x%02x\n", 0xff & regs[R_CD2]);
	tda_reg("CAL_DIV_BYTE_3     = 0x%02x\n", 0xff & regs[R_CD3]);
	tda_reg("MAIN_POST_DIV_BYTE = 0x%02x\n", 0xff & regs[R_MPD]);
	tda_reg("MAIN_DIV_BYTE_1    = 0x%02x\n", 0xff & regs[R_MD1]);
	tda_reg("MAIN_DIV_BYTE_2    = 0x%02x\n", 0xff & regs[R_MD2]);
	tda_reg("MAIN_DIV_BYTE_3    = 0x%02x\n", 0xff & regs[R_MD3]);

	/* only dump extended regs if DBG_ADV is set */
	if (!(tda18271_debug & DBG_ADV))
		return;

	/* W indicates write-only registers.
	 * Register dump for write-only registers shows last value written. */

	tda_reg("EXTENDED_BYTE_1    = 0x%02x\n", 0xff & regs[R_EB1]);
	tda_reg("EXTENDED_BYTE_2    = 0x%02x\n", 0xff & regs[R_EB2]);
	tda_reg("EXTENDED_BYTE_3    = 0x%02x\n", 0xff & regs[R_EB3]);
	tda_reg("EXTENDED_BYTE_4    = 0x%02x\n", 0xff & regs[R_EB4]);
	tda_reg("EXTENDED_BYTE_5    = 0x%02x\n", 0xff & regs[R_EB5]);
	tda_reg("EXTENDED_BYTE_6    = 0x%02x\n", 0xff & regs[R_EB6]);
	tda_reg("EXTENDED_BYTE_7    = 0x%02x\n", 0xff & regs[R_EB7]);
	tda_reg("EXTENDED_BYTE_8    = 0x%02x\n", 0xff & regs[R_EB8]);
	tda_reg("EXTENDED_BYTE_9  W = 0x%02x\n", 0xff & regs[R_EB9]);
	tda_reg("EXTENDED_BYTE_10   = 0x%02x\n", 0xff & regs[R_EB10]);
	tda_reg("EXTENDED_BYTE_11   = 0x%02x\n", 0xff & regs[R_EB11]);
	tda_reg("EXTENDED_BYTE_12   = 0x%02x\n", 0xff & regs[R_EB12]);
	tda_reg("EXTENDED_BYTE_13   = 0x%02x\n", 0xff & regs[R_EB13]);
	tda_reg("EXTENDED_BYTE_14   = 0x%02x\n", 0xff & regs[R_EB14]);
	tda_reg("EXTENDED_BYTE_15   = 0x%02x\n", 0xff & regs[R_EB15]);
	tda_reg("EXTENDED_BYTE_16 W = 0x%02x\n", 0xff & regs[R_EB16]);
	tda_reg("EXTENDED_BYTE_17 W = 0x%02x\n", 0xff & regs[R_EB17]);
	tda_reg("EXTENDED_BYTE_18   = 0x%02x\n", 0xff & regs[R_EB18]);
	tda_reg("EXTENDED_BYTE_19 W = 0x%02x\n", 0xff & regs[R_EB19]);
	tda_reg("EXTENDED_BYTE_20 W = 0x%02x\n", 0xff & regs[R_EB20]);
	tda_reg("EXTENDED_BYTE_21   = 0x%02x\n", 0xff & regs[R_EB21]);
	tda_reg("EXTENDED_BYTE_22   = 0x%02x\n", 0xff & regs[R_EB22]);
	tda_reg("EXTENDED_BYTE_23   = 0x%02x\n", 0xff & regs[R_EB23]);
}

int tda18271_read_regs(struct dvb_frontend *fe)
{
	struct tda18271_priv *priv = fe->tuner_priv;
	unsigned char *regs = priv->tda18271_regs;
	unsigned char buf = 0x00;

Annotation

Implementation Notes