drivers/net/wireless/realtek/rtlwifi/rtl8192ce/trx.c

Source file repositories/reference/linux-study-clean/drivers/net/wireless/realtek/rtlwifi/rtl8192ce/trx.c

File Facts

System
Linux kernel
Corpus path
drivers/net/wireless/realtek/rtlwifi/rtl8192ce/trx.c
Extension
.c
Size
18378 bytes
Lines
687
Domain
Driver Families
Bucket
drivers/net
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

if (!cck_highpwr) {
			u8 cck_agc_rpt = cck_buf->cck_agc_rpt;

			report = cck_buf->cck_agc_rpt & 0xc0;
			report = report >> 6;
			switch (report) {
			case 0x3:
				rx_pwr_all = -46 - (cck_agc_rpt & 0x3e);
				break;
			case 0x2:
				rx_pwr_all = -26 - (cck_agc_rpt & 0x3e);
				break;
			case 0x1:
				rx_pwr_all = -12 - (cck_agc_rpt & 0x3e);
				break;
			case 0x0:
				rx_pwr_all = 16 - (cck_agc_rpt & 0x3e);
				break;
			}
		} else {
			u8 cck_agc_rpt = cck_buf->cck_agc_rpt;

			report = p_drvinfo->cfosho[0] & 0x60;
			report = report >> 5;
			switch (report) {
			case 0x3:
				rx_pwr_all = -46 - ((cck_agc_rpt & 0x1f) << 1);
				break;
			case 0x2:
				rx_pwr_all = -26 - ((cck_agc_rpt & 0x1f) << 1);
				break;
			case 0x1:
				rx_pwr_all = -12 - ((cck_agc_rpt & 0x1f) << 1);
				break;
			case 0x0:
				rx_pwr_all = 16 - ((cck_agc_rpt & 0x1f) << 1);
				break;
			}
		}

		pwdb_all = rtl_query_rxpwrpercentage(rx_pwr_all);
		/* CCK gain is smaller than OFDM/MCS gain,
		 * so we add gain diff by experiences,
		 * the val is 6
		 */
		pwdb_all += 6;
		if (pwdb_all > 100)
			pwdb_all = 100;
		/* modify the offset to make the same
		 * gain index with OFDM.
		 */
		if (pwdb_all > 34 && pwdb_all <= 42)
			pwdb_all -= 2;
		else if (pwdb_all > 26 && pwdb_all <= 34)
			pwdb_all -= 6;
		else if (pwdb_all > 14 && pwdb_all <= 26)
			pwdb_all -= 8;
		else if (pwdb_all > 4 && pwdb_all <= 14)
			pwdb_all -= 4;

		pstats->rx_pwdb_all = pwdb_all;
		pstats->recvsignalpower = rx_pwr_all;

		/* (3) Get Signal Quality (EVM) */
		if (packet_match_bssid) {
			u8 sq;

			if (pstats->rx_pwdb_all > 40)
				sq = 100;
			else {
				sq = cck_buf->sq_rpt;
				if (sq > 64)
					sq = 0;
				else if (sq < 20)
					sq = 100;
				else
					sq = ((64 - sq) * 100) / 44;
			}

			pstats->signalquality = sq;
			pstats->rx_mimo_sig_qual[0] = sq;
			pstats->rx_mimo_sig_qual[1] = -1;
		}
	} else {
		rtlpriv->dm.rfpath_rxenable[0] =
		    rtlpriv->dm.rfpath_rxenable[1] = true;
		/* (1)Get RSSI for HT rate */
		for (i = RF90_PATH_A; i < RF90_PATH_MAX; i++) {
			/* we will judge RF RX path now. */
			if (rtlpriv->dm.rfpath_rxenable[i])

Annotation

Implementation Notes