drivers/media/dvb-frontends/au8522_decoder.c

Source file repositories/reference/linux-study-clean/drivers/media/dvb-frontends/au8522_decoder.c

File Facts

System
Linux kernel
Corpus path
drivers/media/dvb-frontends/au8522_decoder.c
Extension
.c
Size
25084 bytes
Lines
787
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 au8522_register_config {
	u16 reg_name;
	u8 reg_val[8];
};


/* Video Decoder Filter Coefficients
   The values are as follows from left to right
   0="ATV RF" 1="ATV RF13" 2="CVBS" 3="S-Video" 4="PAL" 5=CVBS13" 6="SVideo13"
*/
static const struct au8522_register_config filter_coef[] = {
	{AU8522_FILTER_COEF_R410, {0x25, 0x00, 0x25, 0x25, 0x00, 0x00, 0x00} },
	{AU8522_FILTER_COEF_R411, {0x20, 0x00, 0x20, 0x20, 0x00, 0x00, 0x00} },
	{AU8522_FILTER_COEF_R412, {0x03, 0x00, 0x03, 0x03, 0x00, 0x00, 0x00} },
	{AU8522_FILTER_COEF_R413, {0xe6, 0x00, 0xe6, 0xe6, 0x00, 0x00, 0x00} },
	{AU8522_FILTER_COEF_R414, {0x40, 0x00, 0x40, 0x40, 0x00, 0x00, 0x00} },
	{AU8522_FILTER_COEF_R415, {0x1b, 0x00, 0x1b, 0x1b, 0x00, 0x00, 0x00} },
	{AU8522_FILTER_COEF_R416, {0xc0, 0x00, 0xc0, 0x04, 0x00, 0x00, 0x00} },
	{AU8522_FILTER_COEF_R417, {0x04, 0x00, 0x04, 0x04, 0x00, 0x00, 0x00} },
	{AU8522_FILTER_COEF_R418, {0x8c, 0x00, 0x8c, 0x8c, 0x00, 0x00, 0x00} },
	{AU8522_FILTER_COEF_R419, {0xa0, 0x40, 0xa0, 0xa0, 0x40, 0x40, 0x40} },
	{AU8522_FILTER_COEF_R41A, {0x21, 0x09, 0x21, 0x21, 0x09, 0x09, 0x09} },
	{AU8522_FILTER_COEF_R41B, {0x6c, 0x38, 0x6c, 0x6c, 0x38, 0x38, 0x38} },
	{AU8522_FILTER_COEF_R41C, {0x03, 0xff, 0x03, 0x03, 0xff, 0xff, 0xff} },
	{AU8522_FILTER_COEF_R41D, {0xbf, 0xc7, 0xbf, 0xbf, 0xc7, 0xc7, 0xc7} },
	{AU8522_FILTER_COEF_R41E, {0xa0, 0xdf, 0xa0, 0xa0, 0xdf, 0xdf, 0xdf} },
	{AU8522_FILTER_COEF_R41F, {0x10, 0x06, 0x10, 0x10, 0x06, 0x06, 0x06} },
	{AU8522_FILTER_COEF_R420, {0xae, 0x30, 0xae, 0xae, 0x30, 0x30, 0x30} },
	{AU8522_FILTER_COEF_R421, {0xc4, 0x01, 0xc4, 0xc4, 0x01, 0x01, 0x01} },
	{AU8522_FILTER_COEF_R422, {0x54, 0xdd, 0x54, 0x54, 0xdd, 0xdd, 0xdd} },
	{AU8522_FILTER_COEF_R423, {0xd0, 0xaf, 0xd0, 0xd0, 0xaf, 0xaf, 0xaf} },
	{AU8522_FILTER_COEF_R424, {0x1c, 0xf7, 0x1c, 0x1c, 0xf7, 0xf7, 0xf7} },
	{AU8522_FILTER_COEF_R425, {0x76, 0xdb, 0x76, 0x76, 0xdb, 0xdb, 0xdb} },
	{AU8522_FILTER_COEF_R426, {0x61, 0xc0, 0x61, 0x61, 0xc0, 0xc0, 0xc0} },
	{AU8522_FILTER_COEF_R427, {0xd1, 0x2f, 0xd1, 0xd1, 0x2f, 0x2f, 0x2f} },
	{AU8522_FILTER_COEF_R428, {0x84, 0xd8, 0x84, 0x84, 0xd8, 0xd8, 0xd8} },
	{AU8522_FILTER_COEF_R429, {0x06, 0xfb, 0x06, 0x06, 0xfb, 0xfb, 0xfb} },
	{AU8522_FILTER_COEF_R42A, {0x21, 0xd5, 0x21, 0x21, 0xd5, 0xd5, 0xd5} },
	{AU8522_FILTER_COEF_R42B, {0x0a, 0x3e, 0x0a, 0x0a, 0x3e, 0x3e, 0x3e} },
	{AU8522_FILTER_COEF_R42C, {0xe6, 0x15, 0xe6, 0xe6, 0x15, 0x15, 0x15} },
	{AU8522_FILTER_COEF_R42D, {0x01, 0x34, 0x01, 0x01, 0x34, 0x34, 0x34} },

};
#define NUM_FILTER_COEF (sizeof(filter_coef)\
			 / sizeof(struct au8522_register_config))


/* Registers 0x060b through 0x0652 are the LP Filter coefficients
   The values are as follows from left to right
   0="SIF" 1="ATVRF/ATVRF13"
   Note: the "ATVRF/ATVRF13" mode has never been tested
*/
static const struct au8522_register_config lpfilter_coef[] = {
	{0x060b, {0x21, 0x0b} },
	{0x060c, {0xad, 0xad} },
	{0x060d, {0x70, 0xf0} },
	{0x060e, {0xea, 0xe9} },
	{0x060f, {0xdd, 0xdd} },
	{0x0610, {0x08, 0x64} },
	{0x0611, {0x60, 0x60} },
	{0x0612, {0xf8, 0xb2} },
	{0x0613, {0x01, 0x02} },
	{0x0614, {0xe4, 0xb4} },
	{0x0615, {0x19, 0x02} },
	{0x0616, {0xae, 0x2e} },
	{0x0617, {0xee, 0xc5} },
	{0x0618, {0x56, 0x56} },
	{0x0619, {0x30, 0x58} },
	{0x061a, {0xf9, 0xf8} },
	{0x061b, {0x24, 0x64} },
	{0x061c, {0x07, 0x07} },
	{0x061d, {0x30, 0x30} },
	{0x061e, {0xa9, 0xed} },
	{0x061f, {0x09, 0x0b} },
	{0x0620, {0x42, 0xc2} },
	{0x0621, {0x1d, 0x2a} },
	{0x0622, {0xd6, 0x56} },
	{0x0623, {0x95, 0x8b} },
	{0x0624, {0x2b, 0x2b} },
	{0x0625, {0x30, 0x24} },
	{0x0626, {0x3e, 0x3e} },
	{0x0627, {0x62, 0xe2} },
	{0x0628, {0xe9, 0xf5} },
	{0x0629, {0x99, 0x19} },
	{0x062a, {0xd4, 0x11} },
	{0x062b, {0x03, 0x04} },
	{0x062c, {0xb5, 0x85} },
	{0x062d, {0x1e, 0x20} },
	{0x062e, {0x2a, 0xea} },
	{0x062f, {0xd7, 0xd2} },

Annotation

Implementation Notes