5  * Copyright 2011, 2012, Hauke Mehrtens <hauke@hauke-m.de>
16 #include <linux/dma-mapping.h>
22  * bcma_arch_register_fallback_sprom - Registers a method providing a
33  * This function is useful for weird architectures that have a half-assed
43 		return -EEXIST;  in bcma_arch_register_fallback_sprom()
55 		err = -ENOENT;  in bcma_fill_sprom_with_fallback()
64 		   bus->sprom.revision);  in bcma_fill_sprom_with_fallback()
75 static void bcma_sprom_read(struct bcma_bus *bus, u16 offset, u16 *sprom,  in bcma_sprom_read()  argument
80 		sprom[i] = bcma_read16(bus->drv_cc.core, offset + (i * 2));  in bcma_sprom_read()
132 	for (word = 0; word < words - 1; word++) {  in bcma_sprom_crc()
136 	crc = bcma_crc8(crc, sprom[words - 1] & 0x00FF);  in bcma_sprom_crc()
149 	tmp = sprom[words - 1] & SSB_SPROM_REVISION_CRC;  in bcma_sprom_check_crc()
152 		return -EPROTO;  in bcma_sprom_check_crc()
167 	revision = sprom[words - 1] & SSB_SPROM_REVISION_REV;  in bcma_sprom_valid()
170 		return -ENOENT;  in bcma_sprom_valid()
173 	bus->sprom.revision = revision;  in bcma_sprom_valid()
183 #define SPOFF(offset)	((offset) / sizeof(u16))  argument
186 	bus->sprom._field = ((sprom[SPOFF(_offset)] & (_mask)) >> (_shift))
189 	bus->sprom._field = ((((u32)sprom[SPOFF((_offset)+2)] << 16 | \
204 static s8 sprom_extract_antgain(const u16 *in, u16 offset, u16 mask, u16 shift)  in sprom_extract_antgain()  argument
207 	u8 gain;  in sprom_extract_antgain()  local
209 	v = in[SPOFF(offset)];  in sprom_extract_antgain()
210 	gain = (v & mask) >> shift;  in sprom_extract_antgain()
211 	if (gain == 0xFF) {  in sprom_extract_antgain()
212 		gain = 8; /* If unset use 2dBm */  in sprom_extract_antgain()
215 		gain = ((gain & 0xC0) >> 6) | ((gain & 0x3F) << 2);  in sprom_extract_antgain()
218 	return (s8)gain;  in sprom_extract_antgain()
230 			ARRAY_SIZE(bus->sprom.core_pwr_info));  in bcma_sprom_extract_r8()
234 		*(((__be16 *)bus->sprom.il0mac) + i) = cpu_to_be16(v);  in bcma_sprom_extract_r8()
400 	/* Extract the antenna gain values. */  in bcma_sprom_extract_r8()
401 	bus->sprom.antenna_gain.a0 = sprom_extract_antgain(sprom,  in bcma_sprom_extract_r8()
405 	bus->sprom.antenna_gain.a1 = sprom_extract_antgain(sprom,  in bcma_sprom_extract_r8()
409 	bus->sprom.antenna_gain.a2 = sprom_extract_antgain(sprom,  in bcma_sprom_extract_r8()
413 	bus->sprom.antenna_gain.a3 = sprom_extract_antgain(sprom,  in bcma_sprom_extract_r8()
486 	if (bus->drv_cc.core->id.rev >= 31) {  in bcma_sprom_ext_available()
487 		if (!(bus->drv_cc.capabilities & BCMA_CC_CAP_SPROM))  in bcma_sprom_ext_available()
490 		srom_control = bcma_read32(bus->drv_cc.core,  in bcma_sprom_ext_available()
496 	chip_status = bcma_read32(bus->drv_cc.core, BCMA_CC_CHIPSTAT);  in bcma_sprom_ext_available()
497 	switch (bus->chipinfo.id) {  in bcma_sprom_ext_available()
514  * Indicates that on-chip OTP memory is present and enabled.
522 	chip_status = bcma_read32(bus->drv_cc.core, BCMA_CC_CHIPSTAT);  in bcma_sprom_onchip_available()
523 	switch (bus->chipinfo.id) {  in bcma_sprom_onchip_available()
550 		otpsize = bus->drv_cc.capabilities & BCMA_CC_CAP_OTPS;  in bcma_sprom_onchip_available()
559  * offset where SPROM data is located.
561  * On error, returns 0; byte offset otherwise.
565 	struct bcma_device *cc = bus->drv_cc.core;  in bcma_sprom_onchip_offset()
566 	u32 offset;  in bcma_sprom_onchip_offset()  local
572 	/* obtain bit offset from otplayout register */  in bcma_sprom_onchip_offset()
573 	offset = (bcma_read32(cc, BCMA_CC_OTPL) & BCMA_CC_OTPL_GURGN_OFFSET);  in bcma_sprom_onchip_offset()
574 	return BCMA_CC_SPROM + (offset >> 3);  in bcma_sprom_onchip_offset()
579 	u16 offset = BCMA_CC_SPROM;  in bcma_sprom_get()  local
588 	if (!bus->drv_cc.core)  in bcma_sprom_get()
589 		return -EOPNOTSUPP;  in bcma_sprom_get()
596 		 * on-chip OTP only when no external SPROM  in bcma_sprom_get()
601 			/* determine offset */  in bcma_sprom_get()
602 			offset = bcma_sprom_onchip_offset(bus);  in bcma_sprom_get()
604 		if (!offset || !sprom_onchip) {  in bcma_sprom_get()
610 			err = bcma_fill_sprom_with_fallback(bus, &bus->sprom);  in bcma_sprom_get()
615 	if (bus->chipinfo.id == BCMA_CHIP_ID_BCM4331 ||  in bcma_sprom_get()
616 	    bus->chipinfo.id == BCMA_CHIP_ID_BCM43431)  in bcma_sprom_get()
617 		bcma_chipco_bcm4331_ext_pa_lines_ctl(&bus->drv_cc, false);  in bcma_sprom_get()
619 	bcma_debug(bus, "SPROM offset 0x%x\n", offset);  in bcma_sprom_get()
625 			return -ENOMEM;  in bcma_sprom_get()
627 		bcma_sprom_read(bus, offset, sprom, words);  in bcma_sprom_get()
635 	if (bus->chipinfo.id == BCMA_CHIP_ID_BCM4331 ||  in bcma_sprom_get()
636 	    bus->chipinfo.id == BCMA_CHIP_ID_BCM43431)  in bcma_sprom_get()
637 		bcma_chipco_bcm4331_ext_pa_lines_ctl(&bus->drv_cc, true);  in bcma_sprom_get()
641 		err = bcma_fill_sprom_with_fallback(bus, &bus->sprom);  in bcma_sprom_get()