/*
 * Driver for Digigram pcxhr compatible soundcards
 *
 * mixer interface for stereo cards
 *
 * Copyright (c) 2004 by Digigram <alsa@digigram.com>
 *
 *   This program is free software; you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation; either version 2 of the License, or
 *   (at your option) any later version.
 *
 *   This program is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *   GNU General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with this program; if not, write to the Free Software
 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
 */

#include <linux/delay.h>
#include <linux/io.h>
#include <sound/core.h>
#include <sound/control.h>
#include <sound/tlv.h>
#include <sound/asoundef.h>
#include "pcxhr.h"
#include "pcxhr_core.h"
#include "pcxhr_mix22.h"


/* registers used on the DSP and Xilinx (port 2) : HR stereo cards only */
#define PCXHR_DSP_RESET         0x20
#define PCXHR_XLX_CFG           0x24
#define PCXHR_XLX_RUER          0x28
#define PCXHR_XLX_DATA          0x2C
#define PCXHR_XLX_STATUS        0x30
#define PCXHR_XLX_LOFREQ        0x34
#define PCXHR_XLX_HIFREQ        0x38
#define PCXHR_XLX_CSUER         0x3C
#define PCXHR_XLX_SELMIC        0x40

#define PCXHR_DSP 2

/* byte access only ! */
#define PCXHR_INPB(mgr, x)      inb((mgr)->port[PCXHR_DSP] + (x))
#define PCXHR_OUTPB(mgr, x, data) outb((data), (mgr)->port[PCXHR_DSP] + (x))


/* values for PCHR_DSP_RESET register */
#define PCXHR_DSP_RESET_DSP     0x01
#define PCXHR_DSP_RESET_MUTE    0x02
#define PCXHR_DSP_RESET_CODEC   0x08
#define PCXHR_DSP_RESET_SMPTE   0x10
#define PCXHR_DSP_RESET_GPO_OFFSET      5
#define PCXHR_DSP_RESET_GPO_MASK        0x60

/* values for PCHR_XLX_CFG register */
#define PCXHR_CFG_SYNCDSP_MASK          0x80
#define PCXHR_CFG_DEPENDENCY_MASK       0x60
#define PCXHR_CFG_INDEPENDANT_SEL       0x00
#define PCXHR_CFG_MASTER_SEL            0x40
#define PCXHR_CFG_SLAVE_SEL             0x20
#define PCXHR_CFG_DATA_UER1_SEL_MASK    0x10    /* 0 (UER0), 1(UER1) */
#define PCXHR_CFG_DATAIN_SEL_MASK       0x08    /* 0 (ana), 1 (UER) */
#define PCXHR_CFG_SRC_MASK              0x04    /* 0 (Bypass), 1 (SRC Actif) */
#define PCXHR_CFG_CLOCK_UER1_SEL_MASK   0x02    /* 0 (UER0), 1(UER1) */
#define PCXHR_CFG_CLOCKIN_SEL_MASK      0x01    /* 0 (internal), 1 (AES/EBU) */

/* values for PCHR_XLX_DATA register */
#define PCXHR_DATA_CODEC        0x80
#define AKM_POWER_CONTROL_CMD   0xA007
#define AKM_RESET_ON_CMD        0xA100
#define AKM_RESET_OFF_CMD       0xA103
#define AKM_CLOCK_INF_55K_CMD   0xA240
#define AKM_CLOCK_SUP_55K_CMD   0xA24D
#define AKM_MUTE_CMD            0xA38D
#define AKM_UNMUTE_CMD          0xA30D
#define AKM_LEFT_LEVEL_CMD      0xA600
#define AKM_RIGHT_LEVEL_CMD     0xA700

/* values for PCHR_XLX_STATUS register - READ */
#define PCXHR_STAT_SRC_LOCK             0x01
#define PCXHR_STAT_LEVEL_IN             0x02
#define PCXHR_STAT_GPI_OFFSET           2
#define PCXHR_STAT_GPI_MASK             0x0C
#define PCXHR_STAT_MIC_CAPS             0x10
/* values for PCHR_XLX_STATUS register - WRITE */
#define PCXHR_STAT_FREQ_SYNC_MASK       0x01
#define PCXHR_STAT_FREQ_UER1_MASK       0x02
#define PCXHR_STAT_FREQ_SAVE_MASK       0x80

/* values for PCHR_XLX_CSUER register */
#define PCXHR_SUER1_BIT_U_READ_MASK     0x80
#define PCXHR_SUER1_BIT_C_READ_MASK     0x40
#define PCXHR_SUER1_DATA_PRESENT_MASK   0x20
#define PCXHR_SUER1_CLOCK_PRESENT_MASK  0x10
#define PCXHR_SUER_BIT_U_READ_MASK      0x08
#define PCXHR_SUER_BIT_C_READ_MASK      0x04
#define PCXHR_SUER_DATA_PRESENT_MASK    0x02
#define PCXHR_SUER_CLOCK_PRESENT_MASK   0x01

#define PCXHR_SUER_BIT_U_WRITE_MASK     0x02
#define PCXHR_SUER_BIT_C_WRITE_MASK     0x01

/* values for PCXHR_XLX_SELMIC register - WRITE */
#define PCXHR_SELMIC_PREAMPLI_OFFSET    2
#define PCXHR_SELMIC_PREAMPLI_MASK      0x0C
#define PCXHR_SELMIC_PHANTOM_ALIM       0x80


static const unsigned char g_hr222_p_level[] = {
    0x00,   /* [000] -49.5 dB:  AKM[000] = -1.#INF dB   (mute) */
    0x01,   /* [001] -49.0 dB:  AKM[001] = -48.131 dB   (diff=0.86920 dB) */
    0x01,   /* [002] -48.5 dB:  AKM[001] = -48.131 dB   (diff=0.36920 dB) */
    0x01,   /* [003] -48.0 dB:  AKM[001] = -48.131 dB   (diff=0.13080 dB) */
    0x01,   /* [004] -47.5 dB:  AKM[001] = -48.131 dB   (diff=0.63080 dB) */
    0x01,   /* [005] -46.5 dB:  AKM[001] = -48.131 dB   (diff=1.63080 dB) */
    0x01,   /* [006] -47.0 dB:  AKM[001] = -48.131 dB   (diff=1.13080 dB) */
    0x01,   /* [007] -46.0 dB:  AKM[001] = -48.131 dB   (diff=2.13080 dB) */
    0x01,   /* [008] -45.5 dB:  AKM[001] = -48.131 dB   (diff=2.63080 dB) */
    0x02,   /* [009] -45.0 dB:  AKM[002] = -42.110 dB   (diff=2.88980 dB) */
    0x02,   /* [010] -44.5 dB:  AKM[002] = -42.110 dB   (diff=2.38980 dB) */
    0x02,   /* [011] -44.0 dB:  AKM[002] = -42.110 dB   (diff=1.88980 dB) */
    0x02,   /* [012] -43.5 dB:  AKM[002] = -42.110 dB   (diff=1.38980 dB) */
    0x02,   /* [013] -43.0 dB:  AKM[002] = -42.110 dB   (diff=0.88980 dB) */
    0x02,   /* [014] -42.5 dB:  AKM[002] = -42.110 dB   (diff=0.38980 dB) */
    0x02,   /* [015] -42.0 dB:  AKM[002] = -42.110 dB   (diff=0.11020 dB) */
    0x02,   /* [016] -41.5 dB:  AKM[002] = -42.110 dB   (diff=0.61020 dB) */
    0x02,   /* [017] -41.0 dB:  AKM[002] = -42.110 dB   (diff=1.11020 dB) */
    0x02,   /* [018] -40.5 dB:  AKM[002] = -42.110 dB   (diff=1.61020 dB) */
    0x03,   /* [019] -40.0 dB:  AKM[003] = -38.588 dB   (diff=1.41162 dB) */
    0x03,   /* [020] -39.5 dB:  AKM[003] = -38.588 dB   (diff=0.91162 dB) */
    0x03,   /* [021] -39.0 dB:  AKM[003] = -38.588 dB   (diff=0.41162 dB) */
    0x03,   /* [022] -38.5 dB:  AKM[003] = -38.588 dB   (diff=0.08838 dB) */
    0x03,   /* [023] -38.0 dB:  AKM[003] = -38.588 dB   (diff=0.58838 dB) */
    0x03,   /* [024] -37.5 dB:  AKM[003] = -38.588 dB   (diff=1.08838 dB) */
    0x04,   /* [025] -37.0 dB:  AKM[004] = -36.090 dB   (diff=0.91040 dB) */
    0x04,   /* [026] -36.5 dB:  AKM[004] = -36.090 dB   (diff=0.41040 dB) */
    0x04,   /* [027] -36.0 dB:  AKM[004] = -36.090 dB   (diff=0.08960 dB) */
    0x04,   /* [028] -35.5 dB:  AKM[004] = -36.090 dB   (diff=0.58960 dB) */
    0x05,   /* [029] -35.0 dB:  AKM[005] = -34.151 dB   (diff=0.84860 dB) */
    0x05,   /* [030] -34.5 dB:  AKM[005] = -34.151 dB   (diff=0.34860 dB) */
    0x05,   /* [031] -34.0 dB:  AKM[005] = -34.151 dB   (diff=0.15140 dB) */
    0x05,   /* [032] -33.5 dB:  AKM[005] = -34.151 dB   (diff=0.65140 dB) */
    0x06,   /* [033] -33.0 dB:  AKM[006] = -32.568 dB   (diff=0.43222 dB) */
    0x06,   /* [034] -32.5 dB:  AKM[006] = -32.568 dB   (diff=0.06778 dB) */
    0x06,   /* [035] -32.0 dB:  AKM[006] = -32.568 dB   (diff=0.56778 dB) */
    0x07,   /* [036] -31.5 dB:  AKM[007] = -31.229 dB   (diff=0.27116 dB) */
    0x07,   /* [037] -31.0 dB:  AKM[007] = -31.229 dB   (diff=0.22884 dB) */
    0x08,   /* [038] -30.5 dB:  AKM[008] = -30.069 dB   (diff=0.43100 dB) */
    0x08,   /* [039] -30.0 dB:  AKM[008] = -30.069 dB   (diff=0.06900 dB) */
    0x09,   /* [040] -29.5 dB:  AKM[009] = -29.046 dB   (diff=0.45405 dB) */
    0x09,   /* [041] -29.0 dB:  AKM[009] = -29.046 dB   (diff=0.04595 dB) */
    0x0a,   /* [042] -28.5 dB:  AKM[010] = -28.131 dB   (diff=0.36920 dB) */
    0x0a,   /* [043] -28.0 dB:  AKM[010] = -28.131 dB   (diff=0.13080 dB) */
    0x0b,   /* [044] -27.5 dB:  AKM[011] = -27.303 dB   (diff=0.19705 dB) */
    0x0b,   /* [045] -27.0 dB:  AKM[011] = -27.303 dB   (diff=0.30295 dB) */
    0x0c,   /* [046] -26.5 dB:  AKM[012] = -26.547 dB   (diff=0.04718 dB) */
    0x0d,   /* [047] -26.0 dB:  AKM[013] = -25.852 dB   (diff=0.14806 dB) */
    0x0e,   /* [048] -25.5 dB:  AKM[014] = -25.208 dB   (diff=0.29176 dB) */
    0x0e,   /* [049] -25.0 dB:  AKM[014] = -25.208 dB   (diff=0.20824 dB) */
    0x0f,   /* [050] -24.5 dB:  AKM[015] = -24.609 dB   (diff=0.10898 dB) */
    0x10,   /* [051] -24.0 dB:  AKM[016] = -24.048 dB   (diff=0.04840 dB) */
    0x11,   /* [052] -23.5 dB:  AKM[017] = -23.522 dB   (diff=0.02183 dB) */
    0x12,   /* [053] -23.0 dB:  AKM[018] = -23.025 dB   (diff=0.02535 dB) */
    0x13,   /* [054] -22.5 dB:  AKM[019] = -22.556 dB   (diff=0.05573 dB) */
    0x14,   /* [055] -22.0 dB:  AKM[020] = -22.110 dB   (diff=0.11020 dB) */
    0x15,   /* [056] -21.5 dB:  AKM[021] = -21.686 dB   (diff=0.18642 dB) */
    0x17,   /* [057] -21.0 dB:  AKM[023] = -20.896 dB   (diff=0.10375 dB) */
    0x18,   /* [058] -20.5 dB:  AKM[024] = -20.527 dB   (diff=0.02658 dB) */
    0x1a,   /* [059] -20.0 dB:  AKM[026] = -19.831 dB   (diff=0.16866 dB) */
    0x1b,   /* [060] -19.5 dB:  AKM[027] = -19.504 dB   (diff=0.00353 dB) */
    0x1d,   /* [061] -19.0 dB:  AKM[029] = -18.883 dB   (diff=0.11716 dB) */
    0x1e,   /* [062] -18.5 dB:  AKM[030] = -18.588 dB   (diff=0.08838 dB) */
    0x20,   /* [063] -18.0 dB:  AKM[032] = -18.028 dB   (diff=0.02780 dB) */
    0x22,   /* [064] -17.5 dB:  AKM[034] = -17.501 dB   (diff=0.00123 dB) */
    0x24,   /* [065] -17.0 dB:  AKM[036] = -17.005 dB   (diff=0.00475 dB) */
    0x26,   /* [066] -16.5 dB:  AKM[038] = -16.535 dB   (diff=0.03513 dB) */
    0x28,   /* [067] -16.0 dB:  AKM[040] = -16.090 dB   (diff=0.08960 dB) */
    0x2b,   /* [068] -15.5 dB:  AKM[043] = -15.461 dB   (diff=0.03857 dB) */
    0x2d,   /* [069] -15.0 dB:  AKM[045] = -15.067 dB   (diff=0.06655 dB) */
    0x30,   /* [070] -14.5 dB:  AKM[048] = -14.506 dB   (diff=0.00598 dB) */
    0x33,   /* [071] -14.0 dB:  AKM[051] = -13.979 dB   (diff=0.02060 dB) */
    0x36,   /* [072] -13.5 dB:  AKM[054] = -13.483 dB   (diff=0.01707 dB) */
    0x39,   /* [073] -13.0 dB:  AKM[057] = -13.013 dB   (diff=0.01331 dB) */
    0x3c,   /* [074] -12.5 dB:  AKM[060] = -12.568 dB   (diff=0.06778 dB) */
    0x40,   /* [075] -12.0 dB:  AKM[064] = -12.007 dB   (diff=0.00720 dB) */
    0x44,   /* [076] -11.5 dB:  AKM[068] = -11.481 dB   (diff=0.01937 dB) */
    0x48,   /* [077] -11.0 dB:  AKM[072] = -10.984 dB   (diff=0.01585 dB) */
    0x4c,   /* [078] -10.5 dB:  AKM[076] = -10.515 dB   (diff=0.01453 dB) */
    0x51,   /* [079] -10.0 dB:  AKM[081] = -9.961 dB    (diff=0.03890 dB) */
    0x55,   /* [080] -9.5 dB:   AKM[085] = -9.542 dB    (diff=0.04243 dB) */
    0x5a,   /* [081] -9.0 dB:   AKM[090] = -9.046 dB    (diff=0.04595 dB) */
    0x60,   /* [082] -8.5 dB:   AKM[096] = -8.485 dB    (diff=0.01462 dB) */
    0x66,   /* [083] -8.0 dB:   AKM[102] = -7.959 dB    (diff=0.04120 dB) */
    0x6c,   /* [084] -7.5 dB:   AKM[108] = -7.462 dB    (diff=0.03767 dB) */
    0x72,   /* [085] -7.0 dB:   AKM[114] = -6.993 dB    (diff=0.00729 dB) */
    0x79,   /* [086] -6.5 dB:   AKM[121] = -6.475 dB    (diff=0.02490 dB) */
    0x80,   /* [087] -6.0 dB:   AKM[128] = -5.987 dB    (diff=0.01340 dB) */
    0x87,   /* [088] -5.5 dB:   AKM[135] = -5.524 dB    (diff=0.02413 dB) */
    0x8f,   /* [089] -5.0 dB:   AKM[143] = -5.024 dB    (diff=0.02408 dB) */
    0x98,   /* [090] -4.5 dB:   AKM[152] = -4.494 dB    (diff=0.00607 dB) */
    0xa1,   /* [091] -4.0 dB:   AKM[161] = -3.994 dB    (diff=0.00571 dB) */
    0xaa,   /* [092] -3.5 dB:   AKM[170] = -3.522 dB    (diff=0.02183 dB) */
    0xb5,   /* [093] -3.0 dB:   AKM[181] = -2.977 dB    (diff=0.02277 dB) */
    0xbf,   /* [094] -2.5 dB:   AKM[191] = -2.510 dB    (diff=0.01014 dB) */
    0xcb,   /* [095] -2.0 dB:   AKM[203] = -1.981 dB    (diff=0.01912 dB) */
    0xd7,   /* [096] -1.5 dB:   AKM[215] = -1.482 dB    (diff=0.01797 dB) */
    0xe3,   /* [097] -1.0 dB:   AKM[227] = -1.010 dB    (diff=0.01029 dB) */
    0xf1,   /* [098] -0.5 dB:   AKM[241] = -0.490 dB    (diff=0.00954 dB) */
    0xff,   /* [099] +0.0 dB:   AKM[255] = +0.000 dB    (diff=0.00000 dB) */
};


static void hr222_config_akm(struct pcxhr_mgr *mgr, unsigned short data)
{
        unsigned short mask = 0x8000;
        /* activate access to codec registers */
        PCXHR_INPB(mgr, PCXHR_XLX_HIFREQ);

        while (mask) {
                PCXHR_OUTPB(mgr, PCXHR_XLX_DATA,
                            data & mask ? PCXHR_DATA_CODEC : 0);
                mask >>= 1;
        }
        /* termiate access to codec registers */
        PCXHR_INPB(mgr, PCXHR_XLX_RUER);
}


static int hr222_set_hw_playback_level(struct pcxhr_mgr *mgr,
                                       int idx, int level)
{
        unsigned short cmd;
        if (idx > 1 ||
            level < 0 ||
            level >= ARRAY_SIZE(g_hr222_p_level))
                return -EINVAL;

        if (idx == 0)
                cmd = AKM_LEFT_LEVEL_CMD;
        else
                cmd = AKM_RIGHT_LEVEL_CMD;

        /* conversion from PmBoardCodedLevel to AKM nonlinear programming */
        cmd += g_hr222_p_level[level];

        hr222_config_akm(mgr, cmd);
        return 0;
}


static int hr222_set_hw_capture_level(struct pcxhr_mgr *mgr,
                                      int level_l, int level_r, int level_mic)
{
        /* program all input levels at the same time */
        unsigned int data;
        int i;

        if (!mgr->capture_chips)
                return -EINVAL; /* no PCX22 */

        data  = ((level_mic & 0xff) << 24);     /* micro is mono, but apply */
        data |= ((level_mic & 0xff) << 16);     /* level on both channels */
        data |= ((level_r & 0xff) << 8);        /* line input right channel */
        data |= (level_l & 0xff);               /* line input left channel */

        PCXHR_INPB(mgr, PCXHR_XLX_DATA);        /* activate input codec */
        /* send 32 bits (4 x 8 bits) */
        for (i = 0; i < 32; i++, data <<= 1) {
                PCXHR_OUTPB(mgr, PCXHR_XLX_DATA,
                            (data & 0x80000000) ? PCXHR_DATA_CODEC : 0);
        }
        PCXHR_INPB(mgr, PCXHR_XLX_RUER);        /* close input level codec */
        return 0;
}

static void hr222_micro_boost(struct pcxhr_mgr *mgr, int level);

int hr222_sub_init(struct pcxhr_mgr *mgr)
{
        unsigned char reg;

        mgr->board_has_analog = 1;      /* analog always available */
        mgr->xlx_cfg = PCXHR_CFG_SYNCDSP_MASK;

        reg = PCXHR_INPB(mgr, PCXHR_XLX_STATUS);
        if (reg & PCXHR_STAT_MIC_CAPS)
                mgr->board_has_mic = 1; /* microphone available */
        snd_printdd("MIC input available = %d\n", mgr->board_has_mic);

        /* reset codec */
        PCXHR_OUTPB(mgr, PCXHR_DSP_RESET,
                    PCXHR_DSP_RESET_DSP);
        msleep(5);
        mgr->dsp_reset = PCXHR_DSP_RESET_DSP  |
                         PCXHR_DSP_RESET_MUTE |
                         PCXHR_DSP_RESET_CODEC;
        PCXHR_OUTPB(mgr, PCXHR_DSP_RESET, mgr->dsp_reset);
        /* hr222_write_gpo(mgr, 0); does the same */
        msleep(5);

        /* config AKM */
        hr222_config_akm(mgr, AKM_POWER_CONTROL_CMD);
        hr222_config_akm(mgr, AKM_CLOCK_INF_55K_CMD);
        hr222_config_akm(mgr, AKM_UNMUTE_CMD);
        hr222_config_akm(mgr, AKM_RESET_OFF_CMD);

        /* init micro boost */
        hr222_micro_boost(mgr, 0);

        return 0;
}


/* calc PLL register */
/* TODO : there is a very similar fct in pcxhr.c */
static int hr222_pll_freq_register(unsigned int freq,
                                   unsigned int *pllreg,
                                   unsigned int *realfreq)
{
        unsigned int reg;

        if (freq < 6900 || freq > 219000)
                return -EINVAL;
        reg = (28224000 * 2) / freq;
        reg = (reg - 1) / 2;
        if (reg < 0x100)
                *pllreg = reg + 0xC00;
        else if (reg < 0x200)
                *pllreg = reg + 0x800;
        else if (reg < 0x400)
                *pllreg = reg & 0x1ff;
        else if (reg < 0x800) {
                *pllreg = ((reg >> 1) & 0x1ff) + 0x200;
                reg &= ~1;
        } else {
                *pllreg = ((reg >> 2) & 0x1ff) + 0x400;
                reg &= ~3;
        }
        if (realfreq)
                *realfreq = (28224000 / (reg + 1));
        return 0;
}

int hr222_sub_set_clock(struct pcxhr_mgr *mgr,
                        unsigned int rate,
                        int *changed)
{
        unsigned int speed, pllreg = 0;
        int err;
        unsigned realfreq = rate;

        switch (mgr->use_clock_type) {
        case HR22_CLOCK_TYPE_INTERNAL:
                err = hr222_pll_freq_register(rate, &pllreg, &realfreq);
                if (err)
                        return err;

                mgr->xlx_cfg &= ~(PCXHR_CFG_CLOCKIN_SEL_MASK |
                                  PCXHR_CFG_CLOCK_UER1_SEL_MASK);
                break;
        case HR22_CLOCK_TYPE_AES_SYNC:
                mgr->xlx_cfg |= PCXHR_CFG_CLOCKIN_SEL_MASK;
                mgr->xlx_cfg &= ~PCXHR_CFG_CLOCK_UER1_SEL_MASK;
                break;
        case HR22_CLOCK_TYPE_AES_1:
                if (!mgr->board_has_aes1)
                        return -EINVAL;

                mgr->xlx_cfg |= (PCXHR_CFG_CLOCKIN_SEL_MASK |
                                 PCXHR_CFG_CLOCK_UER1_SEL_MASK);
                break;
        default:
                return -EINVAL;
        }
        hr222_config_akm(mgr, AKM_MUTE_CMD);

        if (mgr->use_clock_type == HR22_CLOCK_TYPE_INTERNAL) {
                PCXHR_OUTPB(mgr, PCXHR_XLX_HIFREQ, pllreg >> 8);
                PCXHR_OUTPB(mgr, PCXHR_XLX_LOFREQ, pllreg & 0xff);
        }

        /* set clock source */
        PCXHR_OUTPB(mgr, PCXHR_XLX_CFG, mgr->xlx_cfg);

        /* codec speed modes */
        speed = rate < 55000 ? 0 : 1;
        if (mgr->codec_speed != speed) {
                mgr->codec_speed = speed;
                if (speed == 0)
                        hr222_config_akm(mgr, AKM_CLOCK_INF_55K_CMD);
                else
                        hr222_config_akm(mgr, AKM_CLOCK_SUP_55K_CMD);
        }

        mgr->sample_rate_real = realfreq;
        mgr->cur_clock_type = mgr->use_clock_type;

        if (changed)
                *changed = 1;

        hr222_config_akm(mgr, AKM_UNMUTE_CMD);

        snd_printdd("set_clock to %dHz (realfreq=%d pllreg=%x)\n",
                    rate, realfreq, pllreg);
        return 0;
}

int hr222_get_external_clock(struct pcxhr_mgr *mgr,
                             enum pcxhr_clock_type clock_type,
                             int *sample_rate)
{
        int rate, calc_rate = 0;
        unsigned int ticks;
        unsigned char mask, reg;

        if (clock_type == HR22_CLOCK_TYPE_AES_SYNC) {

                mask = (PCXHR_SUER_CLOCK_PRESENT_MASK |
                        PCXHR_SUER_DATA_PRESENT_MASK);
                reg = PCXHR_STAT_FREQ_SYNC_MASK;

        } else if (clock_type == HR22_CLOCK_TYPE_AES_1 && mgr->board_has_aes1) {

                mask = (PCXHR_SUER1_CLOCK_PRESENT_MASK |
                        PCXHR_SUER1_DATA_PRESENT_MASK);
                reg = PCXHR_STAT_FREQ_UER1_MASK;

        } else {
                snd_printdd("get_external_clock : type %d not supported\n",
                            clock_type);
                return -EINVAL; /* other clocks not supported */
        }

        if ((PCXHR_INPB(mgr, PCXHR_XLX_CSUER) & mask) != mask) {
                snd_printdd("get_external_clock(%d) = 0 Hz\n", clock_type);
                *sample_rate = 0;
                return 0; /* no external clock locked */
        }

        PCXHR_OUTPB(mgr, PCXHR_XLX_STATUS, reg); /* calculate freq */

        /* save the measured clock frequency */
        reg |= PCXHR_STAT_FREQ_SAVE_MASK;

        if (mgr->last_reg_stat != reg) {
                udelay(500);    /* wait min 2 cycles of lowest freq (8000) */
                mgr->last_reg_stat = reg;
        }

        PCXHR_OUTPB(mgr, PCXHR_XLX_STATUS, reg); /* save */

        /* get the frequency */
        ticks = (unsigned int)PCXHR_INPB(mgr, PCXHR_XLX_CFG);
        ticks = (ticks & 0x03) << 8;
        ticks |= (unsigned int)PCXHR_INPB(mgr, PCXHR_DSP_RESET);

        if (ticks != 0)
                calc_rate = 28224000 / ticks;
        /* rounding */
        if (calc_rate > 184200)
                rate = 192000;
        else if (calc_rate > 152200)
                rate = 176400;
        else if (calc_rate > 112000)
                rate = 128000;
        else if (calc_rate > 92100)
                rate = 96000;
        else if (calc_rate > 76100)
                rate = 88200;
        else if (calc_rate > 56000)
                rate = 64000;
        else if (calc_rate > 46050)
                rate = 48000;
        else if (calc_rate > 38050)
                rate = 44100;
        else if (calc_rate > 28000)
                rate = 32000;
        else if (calc_rate > 23025)
                rate = 24000;
        else if (calc_rate > 19025)
                rate = 22050;
        else if (calc_rate > 14000)
                rate = 16000;
        else if (calc_rate > 11512)
                rate = 12000;
        else if (calc_rate > 9512)
                rate = 11025;
        else if (calc_rate > 7000)
                rate = 8000;
        else
                rate = 0;

        snd_printdd("External clock is at %d Hz (measured %d Hz)\n",
                    rate, calc_rate);
        *sample_rate = rate;
        return 0;
}


int hr222_read_gpio(struct pcxhr_mgr *mgr, int is_gpi, int *value)
{
        if (is_gpi) {
                unsigned char reg = PCXHR_INPB(mgr, PCXHR_XLX_STATUS);
                *value = (int)(reg & PCXHR_STAT_GPI_MASK) >>
                              PCXHR_STAT_GPI_OFFSET;
        } else {
                *value = (int)(mgr->dsp_reset & PCXHR_DSP_RESET_GPO_MASK) >>
                         PCXHR_DSP_RESET_GPO_OFFSET;
        }
        return 0;
}


int hr222_write_gpo(struct pcxhr_mgr *mgr, int value)
{
        unsigned char reg = mgr->dsp_reset & ~PCXHR_DSP_RESET_GPO_MASK;

        reg |= (unsigned char)(value << PCXHR_DSP_RESET_GPO_OFFSET) &
               PCXHR_DSP_RESET_GPO_MASK;

        PCXHR_OUTPB(mgr, PCXHR_DSP_RESET, reg);
        mgr->dsp_reset = reg;
        return 0;
}

int hr222_manage_timecode(struct pcxhr_mgr *mgr, int enable)
{
        if (enable)
                mgr->dsp_reset |= PCXHR_DSP_RESET_SMPTE;
        else
                mgr->dsp_reset &= ~PCXHR_DSP_RESET_SMPTE;

        PCXHR_OUTPB(mgr, PCXHR_DSP_RESET, mgr->dsp_reset);
        return 0;
}

int hr222_update_analog_audio_level(struct snd_pcxhr *chip,
                                    int is_capture, int channel)
{
        snd_printdd("hr222_update_analog_audio_level(%s chan=%d)\n",
                    is_capture ? "capture" : "playback", channel);
        if (is_capture) {
                int level_l, level_r, level_mic;
                /* we have to update all levels */
                if (chip->analog_capture_active) {
                        level_l = chip->analog_capture_volume[0];
                        level_r = chip->analog_capture_volume[1];
                } else {
                        level_l = HR222_LINE_CAPTURE_LEVEL_MIN;
                        level_r = HR222_LINE_CAPTURE_LEVEL_MIN;
                }
                if (chip->mic_active)
                        level_mic = chip->mic_volume;
                else
                        level_mic = HR222_MICRO_CAPTURE_LEVEL_MIN;
                return hr222_set_hw_capture_level(chip->mgr,
                                                 level_l, level_r, level_mic);
        } else {
                int vol;
                if (chip->analog_playback_active[channel])
                        vol = chip->analog_playback_volume[channel];
                else
                        vol = HR222_LINE_PLAYBACK_LEVEL_MIN;
                return hr222_set_hw_playback_level(chip->mgr, channel, vol);
        }
}


/*texts[5] = {"Line", "Digital", "Digi+SRC", "Mic", "Line+Mic"}*/
#define SOURCE_LINE     0
#define SOURCE_DIGITAL  1
#define SOURCE_DIGISRC  2
#define SOURCE_MIC      3
#define SOURCE_LINEMIC  4

int hr222_set_audio_source(struct snd_pcxhr *chip)
{
        int digital = 0;
        /* default analog source */
        chip->mgr->xlx_cfg &= ~(PCXHR_CFG_SRC_MASK |
                                PCXHR_CFG_DATAIN_SEL_MASK |
                                PCXHR_CFG_DATA_UER1_SEL_MASK);

        if (chip->audio_capture_source == SOURCE_DIGISRC) {
                chip->mgr->xlx_cfg |= PCXHR_CFG_SRC_MASK;
                digital = 1;
        } else {
                if (chip->audio_capture_source == SOURCE_DIGITAL)
                        digital = 1;
        }
        if (digital) {
                chip->mgr->xlx_cfg |=  PCXHR_CFG_DATAIN_SEL_MASK;
                if (chip->mgr->board_has_aes1) {
                        /* get data from the AES1 plug */
                        chip->mgr->xlx_cfg |= PCXHR_CFG_DATA_UER1_SEL_MASK;
                }
                /* chip->mic_active = 0; */
                /* chip->analog_capture_active = 0; */
        } else {
                int update_lvl = 0;
                chip->analog_capture_active = 0;
                chip->mic_active = 0;
                if (chip->audio_capture_source == SOURCE_LINE ||
                    chip->audio_capture_source == SOURCE_LINEMIC) {
                        if (chip->analog_capture_active == 0)
                                update_lvl = 1;
                        chip->analog_capture_active = 1;
                }
                if (chip->audio_capture_source == SOURCE_MIC ||
                    chip->audio_capture_source == SOURCE_LINEMIC) {
                        if (chip->mic_active == 0)
                                update_lvl = 1;
                        chip->mic_active = 1;
                }
                if (update_lvl) {
                        /* capture: update all 3 mutes/unmutes with one call */
                        hr222_update_analog_audio_level(chip, 1, 0);
                }
        }
        /* set the source infos (max 3 bits modified) */
        PCXHR_OUTPB(chip->mgr, PCXHR_XLX_CFG, chip->mgr->xlx_cfg);
        return 0;
}


int hr222_iec958_capture_byte(struct snd_pcxhr *chip,
                             int aes_idx, unsigned char *aes_bits)
{
        unsigned char idx = (unsigned char)(aes_idx * 8);
        unsigned char temp = 0;
        unsigned char mask = chip->mgr->board_has_aes1 ?
                PCXHR_SUER1_BIT_C_READ_MASK : PCXHR_SUER_BIT_C_READ_MASK;
        int i;
        for (i = 0; i < 8; i++) {
                PCXHR_OUTPB(chip->mgr, PCXHR_XLX_RUER, idx++); /* idx < 192 */
                temp <<= 1;
                if (PCXHR_INPB(chip->mgr, PCXHR_XLX_CSUER) & mask)
                        temp |= 1;
        }
        snd_printdd("read iec958 AES %d byte %d = 0x%x\n",
                    chip->chip_idx, aes_idx, temp);
        *aes_bits = temp;
        return 0;
}


int hr222_iec958_update_byte(struct snd_pcxhr *chip,
                             int aes_idx, unsigned char aes_bits)
{
        int i;
        unsigned char new_bits = aes_bits;
        unsigned char old_bits = chip->aes_bits[aes_idx];
        unsigned char idx = (unsigned char)(aes_idx * 8);
        for (i = 0; i < 8; i++) {
                if ((old_bits & 0x01) != (new_bits & 0x01)) {
                        /* idx < 192 */
                        PCXHR_OUTPB(chip->mgr, PCXHR_XLX_RUER, idx);
                        /* write C and U bit */
                        PCXHR_OUTPB(chip->mgr, PCXHR_XLX_CSUER, new_bits&0x01 ?
                                    PCXHR_SUER_BIT_C_WRITE_MASK : 0);
                }
                idx++;
                old_bits >>= 1;
                new_bits >>= 1;
        }
        chip->aes_bits[aes_idx] = aes_bits;
        return 0;
}

static void hr222_micro_boost(struct pcxhr_mgr *mgr, int level)
{
        unsigned char boost_mask;
        boost_mask = (unsigned char) (level << PCXHR_SELMIC_PREAMPLI_OFFSET);
        if (boost_mask & (~PCXHR_SELMIC_PREAMPLI_MASK))
                return; /* only values form 0 to 3 accepted */

        mgr->xlx_selmic &= ~PCXHR_SELMIC_PREAMPLI_MASK;
        mgr->xlx_selmic |= boost_mask;

        PCXHR_OUTPB(mgr, PCXHR_XLX_SELMIC, mgr->xlx_selmic);

        snd_printdd("hr222_micro_boost : set %x\n", boost_mask);
}

static void hr222_phantom_power(struct pcxhr_mgr *mgr, int power)
{
        if (power)
                mgr->xlx_selmic |= PCXHR_SELMIC_PHANTOM_ALIM;
        else
                mgr->xlx_selmic &= ~PCXHR_SELMIC_PHANTOM_ALIM;

        PCXHR_OUTPB(mgr, PCXHR_XLX_SELMIC, mgr->xlx_selmic);

        snd_printdd("hr222_phantom_power : set %d\n", power);
}


/* mic level */
static const DECLARE_TLV_DB_SCALE(db_scale_mic_hr222, -9850, 50, 650);

static int hr222_mic_vol_info(struct snd_kcontrol *kcontrol,
                              struct snd_ctl_elem_info *uinfo)
{
        uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
        uinfo->count = 1;
        uinfo->value.integer.min = HR222_MICRO_CAPTURE_LEVEL_MIN; /* -98 dB */
        /* gains from 9 dB to 31.5 dB not recommended; use micboost instead */
        uinfo->value.integer.max = HR222_MICRO_CAPTURE_LEVEL_MAX; /*  +7 dB */
        return 0;
}

static int hr222_mic_vol_get(struct snd_kcontrol *kcontrol,
                             struct snd_ctl_elem_value *ucontrol)
{
        struct snd_pcxhr *chip = snd_kcontrol_chip(kcontrol);
        mutex_lock(&chip->mgr->mixer_mutex);
        ucontrol->value.integer.value[0] = chip->mic_volume;
        mutex_unlock(&chip->mgr->mixer_mutex);
        return 0;
}

static int hr222_mic_vol_put(struct snd_kcontrol *kcontrol,
                             struct snd_ctl_elem_value *ucontrol)
{
        struct snd_pcxhr *chip = snd_kcontrol_chip(kcontrol);
        int changed = 0;
        mutex_lock(&chip->mgr->mixer_mutex);
        if (chip->mic_volume != ucontrol->value.integer.value[0]) {
                changed = 1;
                chip->mic_volume = ucontrol->value.integer.value[0];
                hr222_update_analog_audio_level(chip, 1, 0);
        }
        mutex_unlock(&chip->mgr->mixer_mutex);
        return changed;
}

static struct snd_kcontrol_new hr222_control_mic_level = {
        .iface =        SNDRV_CTL_ELEM_IFACE_MIXER,
        .access =       (SNDRV_CTL_ELEM_ACCESS_READWRITE |
                         SNDRV_CTL_ELEM_ACCESS_TLV_READ),
        .name =         "Mic Capture Volume",
        .info =         hr222_mic_vol_info,
        .get =          hr222_mic_vol_get,
        .put =          hr222_mic_vol_put,
        .tlv = { .p = db_scale_mic_hr222 },
};


/* mic boost level */
static const DECLARE_TLV_DB_SCALE(db_scale_micboost_hr222, 0, 1800, 5400);

static int hr222_mic_boost_info(struct snd_kcontrol *kcontrol,
                                struct snd_ctl_elem_info *uinfo)
{
        uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
        uinfo->count = 1;
        uinfo->value.integer.min = 0;   /*  0 dB */
        uinfo->value.integer.max = 3;   /* 54 dB */
        return 0;
}

static int hr222_mic_boost_get(struct snd_kcontrol *kcontrol,
                               struct snd_ctl_elem_value *ucontrol)
{
        struct snd_pcxhr *chip = snd_kcontrol_chip(kcontrol);
        mutex_lock(&chip->mgr->mixer_mutex);
        ucontrol->value.integer.value[0] = chip->mic_boost;
        mutex_unlock(&chip->mgr->mixer_mutex);
        return 0;
}

static int hr222_mic_boost_put(struct snd_kcontrol *kcontrol,
                               struct snd_ctl_elem_value *ucontrol)
{
        struct snd_pcxhr *chip = snd_kcontrol_chip(kcontrol);
        int changed = 0;
        mutex_lock(&chip->mgr->mixer_mutex);
        if (chip->mic_boost != ucontrol->value.integer.value[0]) {
                changed = 1;
                chip->mic_boost = ucontrol->value.integer.value[0];
                hr222_micro_boost(chip->mgr, chip->mic_boost);
        }
        mutex_unlock(&chip->mgr->mixer_mutex);
        return changed;
}

static struct snd_kcontrol_new hr222_control_mic_boost = {
        .iface =        SNDRV_CTL_ELEM_IFACE_MIXER,
        .access =       (SNDRV_CTL_ELEM_ACCESS_READWRITE |
                         SNDRV_CTL_ELEM_ACCESS_TLV_READ),
        .name =         "MicBoost Capture Volume",
        .info =         hr222_mic_boost_info,
        .get =          hr222_mic_boost_get,
        .put =          hr222_mic_boost_put,
        .tlv = { .p = db_scale_micboost_hr222 },
};


/******************* Phantom power switch *******************/
#define hr222_phantom_power_info        snd_ctl_boolean_mono_info

static int hr222_phantom_power_get(struct snd_kcontrol *kcontrol,
                                   struct snd_ctl_elem_value *ucontrol)
{
        struct snd_pcxhr *chip = snd_kcontrol_chip(kcontrol);
        mutex_lock(&chip->mgr->mixer_mutex);
        ucontrol->value.integer.value[0] = chip->phantom_power;
        mutex_unlock(&chip->mgr->mixer_mutex);
        return 0;
}

static int hr222_phantom_power_put(struct snd_kcontrol *kcontrol,
                                   struct snd_ctl_elem_value *ucontrol)
{
        struct snd_pcxhr *chip = snd_kcontrol_chip(kcontrol);
        int power, changed = 0;

        mutex_lock(&chip->mgr->mixer_mutex);
        power = !!ucontrol->value.integer.value[0];
        if (chip->phantom_power != power) {
                hr222_phantom_power(chip->mgr, power);
                chip->phantom_power = power;
                changed = 1;
        }
        mutex_unlock(&chip->mgr->mixer_mutex);
        return changed;
}

static struct snd_kcontrol_new hr222_phantom_power_switch = {
        .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
        .name = "Phantom Power Switch",
        .info = hr222_phantom_power_info,
        .get = hr222_phantom_power_get,
        .put = hr222_phantom_power_put,
};


int hr222_add_mic_controls(struct snd_pcxhr *chip)
{
        int err;
        if (!chip->mgr->board_has_mic)
                return 0;

        /* controls */
        err = snd_ctl_add(chip->card, snd_ctl_new1(&hr222_control_mic_level,
                                                   chip));
        if (err < 0)
                return err;

        err = snd_ctl_add(chip->card, snd_ctl_new1(&hr222_control_mic_boost,
                                                   chip));
        if (err < 0)
                return err;

        err = snd_ctl_add(chip->card, snd_ctl_new1(&hr222_phantom_power_switch,
                                                   chip));
        return err;
}