/*	$OpenBSD: if_urtwn.c,v 1.16 2011/02/10 17:26:40 jakemsr Exp $	*/

/*-
 * Copyright (c) 2010 Damien Bergamini <damien.bergamini@free.fr>
 * Copyright (c) 2014 Kevin Lo <kevlo@FreeBSD.org>
 * Copyright (c) 2015-2016 Andriy Voskoboinyk <avos@FreeBSD.org>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");

#include "opt_wlan.h"

#include <sys/param.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/mbuf.h>
#include <sys/kernel.h>
#include <sys/socket.h>
#include <sys/systm.h>
#include <sys/malloc.h>
#include <sys/queue.h>
#include <sys/taskqueue.h>
#include <sys/bus.h>
#include <sys/endian.h>
#include <sys/linker.h>

#include <net/if.h>
#include <net/ethernet.h>
#include <net/if_media.h>

#include <net80211/ieee80211_var.h>
#include <net80211/ieee80211_radiotap.h>

#include <dev/rtwn/if_rtwnreg.h>
#include <dev/rtwn/if_rtwnvar.h>

#include <dev/rtwn/if_rtwn_debug.h>

#include <dev/rtwn/rtl8192c/r92c.h>
#include <dev/rtwn/rtl8192c/r92c_var.h>

#include <dev/rtwn/rtl8188e/r88e.h>
#include <dev/rtwn/rtl8188e/r88e_reg.h>


static void
r88e_crystalcap_write(struct rtwn_softc *sc)
{
	struct r92c_softc *rs = sc->sc_priv;
	uint32_t reg;
	uint8_t val;

	val = rs->crystalcap & 0x3f;
	reg = rtwn_bb_read(sc, R92C_AFE_XTAL_CTRL);
	rtwn_bb_write(sc, R92C_AFE_XTAL_CTRL,
	    RW(reg, R92C_AFE_XTAL_CTRL_ADDR, val | val << 6));
}

void
r88e_init_bb(struct rtwn_softc *sc)
{

	/* Enable BB and RF. */
	rtwn_setbits_2(sc, R92C_SYS_FUNC_EN, 0,
	    R92C_SYS_FUNC_EN_BBRSTB | R92C_SYS_FUNC_EN_BB_GLB_RST |
	    R92C_SYS_FUNC_EN_DIO_RF);

	rtwn_write_1(sc, R92C_RF_CTRL,
	    R92C_RF_CTRL_EN | R92C_RF_CTRL_RSTB | R92C_RF_CTRL_SDMRSTB);
	rtwn_write_1(sc, R92C_SYS_FUNC_EN,
	    R92C_SYS_FUNC_EN_USBA | R92C_SYS_FUNC_EN_USBD |
	    R92C_SYS_FUNC_EN_BB_GLB_RST | R92C_SYS_FUNC_EN_BBRSTB);

	r92c_init_bb_common(sc);

	rtwn_bb_write(sc, R92C_OFDM0_AGCCORE1(0), 0x69553422);
	rtwn_delay(sc, 1);
	rtwn_bb_write(sc, R92C_OFDM0_AGCCORE1(0), 0x69553420);
	rtwn_delay(sc, 1);

	r88e_crystalcap_write(sc);
}

int
r88e_power_on(struct rtwn_softc *sc)
{
#define RTWN_CHK(res) do {	\
	if (res != 0)		\
		return (EIO);	\
} while(0)
	int ntries;

	/* Wait for power ready bit. */
	for (ntries = 0; ntries < 5000; ntries++) {
		if (rtwn_read_4(sc, R92C_APS_FSMCO) & R92C_APS_FSMCO_SUS_HOST)
			break;
		rtwn_delay(sc, 10);
	}
	if (ntries == 5000) {
		device_printf(sc->sc_dev,
		    "timeout waiting for chip power up\n");
		return (ETIMEDOUT);
	}

	/* Reset BB. */
	RTWN_CHK(rtwn_setbits_1(sc, R92C_SYS_FUNC_EN,
	    R92C_SYS_FUNC_EN_BBRSTB | R92C_SYS_FUNC_EN_BB_GLB_RST, 0));

	RTWN_CHK(rtwn_setbits_1(sc, R92C_AFE_XTAL_CTRL + 2, 0, 0x80));

	/* Disable HWPDN. */
	RTWN_CHK(rtwn_setbits_1_shift(sc, R92C_APS_FSMCO,
	    R92C_APS_FSMCO_APDM_HPDN, 0, 1));

	/* Disable WL suspend. */
	RTWN_CHK(rtwn_setbits_1_shift(sc, R92C_APS_FSMCO,
	    R92C_APS_FSMCO_AFSM_HSUS | R92C_APS_FSMCO_AFSM_PCIE, 0, 1));

	RTWN_CHK(rtwn_setbits_1_shift(sc, R92C_APS_FSMCO,
	    0, R92C_APS_FSMCO_APFM_ONMAC, 1));
	for (ntries = 0; ntries < 5000; ntries++) {
		if (!(rtwn_read_2(sc, R92C_APS_FSMCO) &
		    R92C_APS_FSMCO_APFM_ONMAC))
			break;
		rtwn_delay(sc, 10);
	}
	if (ntries == 5000)
		return (ETIMEDOUT);

	/* Enable LDO normal mode. */
	RTWN_CHK(rtwn_setbits_1(sc, R92C_LPLDO_CTRL,
	    R92C_LPLDO_CTRL_SLEEP, 0));

	/* Enable MAC DMA/WMAC/SCHEDULE/SEC blocks. */
	RTWN_CHK(rtwn_write_2(sc, R92C_CR, 0));
	RTWN_CHK(rtwn_setbits_2(sc, R92C_CR, 0,
	    R92C_CR_HCI_TXDMA_EN | R92C_CR_TXDMA_EN |
	    R92C_CR_HCI_RXDMA_EN | R92C_CR_RXDMA_EN |
	    R92C_CR_PROTOCOL_EN | R92C_CR_SCHEDULE_EN |
	    ((sc->sc_hwcrypto != RTWN_CRYPTO_SW) ? R92C_CR_ENSEC : 0) |
	    R92C_CR_CALTMR_EN));

	return (0);
#undef RTWN_CHK
}