saa7164-dvb.c

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/*
 *  Driver for the NXP SAA7164 PCIe bridge
 *
 *  Copyright (c) 2010 Steven Toth <[email protected]>
 *
 *  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., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#include "saa7164.h"

#include "tda10048.h"
#include "tda18271.h"
#include "s5h1411.h"

#define DRIVER_NAME "saa7164"

DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);

/* addr is in the card struct, get it from there */
static struct tda10048_config hauppauge_hvr2200_1_config = {
    .demod_address    = 0x10 >> 1,
    .output_mode      = TDA10048_SERIAL_OUTPUT,
    .fwbulkwritelen   = TDA10048_BULKWRITE_200,
    .inversion        = TDA10048_INVERSION_ON,
    .dtv6_if_freq_khz = TDA10048_IF_3300,
    .dtv7_if_freq_khz = TDA10048_IF_3500,
    .dtv8_if_freq_khz = TDA10048_IF_4000,
    .clk_freq_khz     = TDA10048_CLK_16000,
};
static struct tda10048_config hauppauge_hvr2200_2_config = {
    .demod_address    = 0x12 >> 1,
    .output_mode      = TDA10048_SERIAL_OUTPUT,
    .fwbulkwritelen   = TDA10048_BULKWRITE_200,
    .inversion        = TDA10048_INVERSION_ON,
    .dtv6_if_freq_khz = TDA10048_IF_3300,
    .dtv7_if_freq_khz = TDA10048_IF_3500,
    .dtv8_if_freq_khz = TDA10048_IF_4000,
    .clk_freq_khz     = TDA10048_CLK_16000,
};

static struct tda18271_std_map hauppauge_tda18271_std_map = {
    .atsc_6   = { .if_freq = 3250, .agc_mode = 3, .std = 3,
              .if_lvl = 6, .rfagc_top = 0x37 },
    .qam_6    = { .if_freq = 4000, .agc_mode = 3, .std = 0,
              .if_lvl = 6, .rfagc_top = 0x37 },
};

static struct tda18271_config hauppauge_hvr22x0_tuner_config = {
    .std_map    = &hauppauge_tda18271_std_map,
    .gate       = TDA18271_GATE_ANALOG,
    .role       = TDA18271_MASTER,
};

static struct tda18271_config hauppauge_hvr22x0s_tuner_config = {
    .std_map    = &hauppauge_tda18271_std_map,
    .gate       = TDA18271_GATE_ANALOG,
    .role       = TDA18271_SLAVE,
    .output_opt     = TDA18271_OUTPUT_LT_OFF,
    .rf_cal_on_startup = 1
};

static struct s5h1411_config hauppauge_s5h1411_config = {
    .output_mode   = S5H1411_SERIAL_OUTPUT,
    .gpio          = S5H1411_GPIO_ON,
    .qam_if        = S5H1411_IF_4000,
    .vsb_if        = S5H1411_IF_3250,
    .inversion     = S5H1411_INVERSION_ON,
    .status_mode   = S5H1411_DEMODLOCKING,
    .mpeg_timing   = S5H1411_MPEGTIMING_CONTINOUS_NONINVERTING_CLOCK,
};

static int saa7164_dvb_stop_port(struct saa7164_port *port)
{
    struct saa7164_dev *dev = port->dev;
    int ret;

    ret = saa7164_api_transition_port(port, SAA_DMASTATE_STOP);
    if ((ret != SAA_OK) && (ret != SAA_ERR_ALREADY_STOPPED)) {
        printk(KERN_ERR "%s() stop transition failed, ret = 0x%x\n",
            __func__, ret);
        ret = -EIO;
    } else {
        dprintk(DBGLVL_DVB, "%s()    Stopped\n", __func__);
        ret = 0;
    }

    return ret;
}

static int saa7164_dvb_acquire_port(struct saa7164_port *port)
{
    struct saa7164_dev *dev = port->dev;
    int ret;

    ret = saa7164_api_transition_port(port, SAA_DMASTATE_ACQUIRE);
    if ((ret != SAA_OK) && (ret != SAA_ERR_ALREADY_STOPPED)) {
        printk(KERN_ERR "%s() acquire transition failed, ret = 0x%x\n",
            __func__, ret);
        ret = -EIO;
    } else {
        dprintk(DBGLVL_DVB, "%s() Acquired\n", __func__);
        ret = 0;
    }

    return ret;
}

static int saa7164_dvb_pause_port(struct saa7164_port *port)
{
    struct saa7164_dev *dev = port->dev;
    int ret;

    ret = saa7164_api_transition_port(port, SAA_DMASTATE_PAUSE);
    if ((ret != SAA_OK) && (ret != SAA_ERR_ALREADY_STOPPED)) {
        printk(KERN_ERR "%s() pause transition failed, ret = 0x%x\n",
            __func__, ret);
        ret = -EIO;
    } else {
        dprintk(DBGLVL_DVB, "%s()   Paused\n", __func__);
        ret = 0;
    }

    return ret;
}

/* Firmware is very windows centric, meaning you have to transition
 * the part through AVStream / KS Windows stages, forwards or backwards.
 * States are: stopped, acquired (h/w), paused, started.
 */
static int saa7164_dvb_stop_streaming(struct saa7164_port *port)
{
    struct saa7164_dev *dev = port->dev;
    struct saa7164_buffer *buf;
    struct list_head *p, *q;
    int ret;

    dprintk(DBGLVL_DVB, "%s(port=%d)\n", __func__, port->nr);

    ret = saa7164_dvb_pause_port(port);
    ret = saa7164_dvb_acquire_port(port);
    ret = saa7164_dvb_stop_port(port);

    /* Mark the hardware buffers as free */
    mutex_lock(&port->dmaqueue_lock);
    list_for_each_safe(p, q, &port->dmaqueue.list) {
        buf = list_entry(p, struct saa7164_buffer, list);
        buf->flags = SAA7164_BUFFER_FREE;
    }
    mutex_unlock(&port->dmaqueue_lock);

    return ret;
}

static int saa7164_dvb_start_port(struct saa7164_port *port)
{
    struct saa7164_dev *dev = port->dev;
    int ret = 0, result;

    dprintk(DBGLVL_DVB, "%s(port=%d)\n", __func__, port->nr);

    saa7164_buffer_cfg_port(port);

    /* Acquire the hardware */
    result = saa7164_api_transition_port(port, SAA_DMASTATE_ACQUIRE);
    if ((result != SAA_OK) && (result != SAA_ERR_ALREADY_STOPPED)) {
        printk(KERN_ERR "%s() acquire transition failed, res = 0x%x\n",
            __func__, result);

        /* Stop the hardware, regardless */
        result = saa7164_api_transition_port(port, SAA_DMASTATE_STOP);
        if ((result != SAA_OK) && (result != SAA_ERR_ALREADY_STOPPED)) {
            printk(KERN_ERR "%s() acquire/forced stop transition "
                "failed, res = 0x%x\n", __func__, result);
        }
        ret = -EIO;
        goto out;
    } else
        dprintk(DBGLVL_DVB, "%s()   Acquired\n", __func__);

    /* Pause the hardware */
    result = saa7164_api_transition_port(port, SAA_DMASTATE_PAUSE);
    if ((result != SAA_OK) && (result != SAA_ERR_ALREADY_STOPPED)) {
        printk(KERN_ERR "%s() pause transition failed, res = 0x%x\n",
                __func__, result);

        /* Stop the hardware, regardless */
        result = saa7164_api_transition_port(port, SAA_DMASTATE_STOP);
        if ((result != SAA_OK) && (result != SAA_ERR_ALREADY_STOPPED)) {
            printk(KERN_ERR "%s() pause/forced stop transition "
                "failed, res = 0x%x\n", __func__, result);
        }

        ret = -EIO;
        goto out;
    } else
        dprintk(DBGLVL_DVB, "%s()   Paused\n", __func__);

    /* Start the hardware */
    result = saa7164_api_transition_port(port, SAA_DMASTATE_RUN);
    if ((result != SAA_OK) && (result != SAA_ERR_ALREADY_STOPPED)) {
        printk(KERN_ERR "%s() run transition failed, result = 0x%x\n",
                __func__, result);

        /* Stop the hardware, regardless */
        result = saa7164_api_transition_port(port, SAA_DMASTATE_STOP);
        if ((result != SAA_OK) && (result != SAA_ERR_ALREADY_STOPPED)) {
            printk(KERN_ERR "%s() run/forced stop transition "
                "failed, res = 0x%x\n", __func__, result);
        }

        ret = -EIO;
    } else
        dprintk(DBGLVL_DVB, "%s()   Running\n", __func__);

out:
    return ret;
}

static int saa7164_dvb_start_feed(struct dvb_demux_feed *feed)
{
    struct dvb_demux *demux = feed->demux;
    struct saa7164_port *port = (struct saa7164_port *) demux->priv;
    struct saa7164_dvb *dvb = &port->dvb;
    struct saa7164_dev *dev = port->dev;
    int ret = 0;

    dprintk(DBGLVL_DVB, "%s(port=%d)\n", __func__, port->nr);

    if (!demux->dmx.frontend)
        return -EINVAL;

    if (dvb) {
        mutex_lock(&dvb->lock);
        if (dvb->feeding++ == 0) {
            /* Start transport */
            ret = saa7164_dvb_start_port(port);
        }
        mutex_unlock(&dvb->lock);
        dprintk(DBGLVL_DVB, "%s(port=%d) now feeding = %d\n",
            __func__, port->nr, dvb->feeding);
    }

    return ret;
}

static int saa7164_dvb_stop_feed(struct dvb_demux_feed *feed)
{
    struct dvb_demux *demux = feed->demux;
    struct saa7164_port *port = (struct saa7164_port *) demux->priv;
    struct saa7164_dvb *dvb = &port->dvb;
    struct saa7164_dev *dev = port->dev;
    int ret = 0;

    dprintk(DBGLVL_DVB, "%s(port=%d)\n", __func__, port->nr);

    if (dvb) {
        mutex_lock(&dvb->lock);
        if (--dvb->feeding == 0) {
            /* Stop transport */
            ret = saa7164_dvb_stop_streaming(port);
        }
        mutex_unlock(&dvb->lock);
        dprintk(DBGLVL_DVB, "%s(port=%d) now feeding = %d\n",
            __func__, port->nr, dvb->feeding);
    }

    return ret;
}

static int dvb_register(struct saa7164_port *port)
{
    struct saa7164_dvb *dvb = &port->dvb;
    struct saa7164_dev *dev = port->dev;
    struct saa7164_buffer *buf;
    int result, i;

    dprintk(DBGLVL_DVB, "%s(port=%d)\n", __func__, port->nr);

    if (port->type != SAA7164_MPEG_DVB)
        BUG();

    /* Sanity check that the PCI configuration space is active */
    if (port->hwcfg.BARLocation == 0) {
        result = -ENOMEM;
        printk(KERN_ERR "%s: dvb_register_adapter failed "
               "(errno = %d), NO PCI configuration\n",
            DRIVER_NAME, result);
        goto fail_adapter;
    }

    /* Init and establish defaults */
    port->hw_streamingparams.bitspersample = 8;
    port->hw_streamingparams.samplesperline = 188;
    port->hw_streamingparams.numberoflines =
        (SAA7164_TS_NUMBER_OF_LINES * 188) / 188;

    port->hw_streamingparams.pitch = 188;
    port->hw_streamingparams.linethreshold = 0;
    port->hw_streamingparams.pagetablelistvirt = NULL;
    port->hw_streamingparams.pagetablelistphys = NULL;
    port->hw_streamingparams.numpagetables = 2 +
        ((SAA7164_TS_NUMBER_OF_LINES * 188) / PAGE_SIZE);

    port->hw_streamingparams.numpagetableentries = port->hwcfg.buffercount;

    /* Allocate the PCI resources */
    for (i = 0; i < port->hwcfg.buffercount; i++) {
        buf = saa7164_buffer_alloc(port,
            port->hw_streamingparams.numberoflines *
            port->hw_streamingparams.pitch);

        if (!buf) {
            result = -ENOMEM;
            printk(KERN_ERR "%s: dvb_register_adapter failed "
                   "(errno = %d), unable to allocate buffers\n",
                DRIVER_NAME, result);
            goto fail_adapter;
        }

        mutex_lock(&port->dmaqueue_lock);
        list_add_tail(&buf->list, &port->dmaqueue.list);
        mutex_unlock(&port->dmaqueue_lock);
    }

    /* register adapter */
    result = dvb_register_adapter(&dvb->adapter, DRIVER_NAME, THIS_MODULE,
            &dev->pci->dev, adapter_nr);
    if (result < 0) {
        printk(KERN_ERR "%s: dvb_register_adapter failed "
               "(errno = %d)\n", DRIVER_NAME, result);
        goto fail_adapter;
    }
    dvb->adapter.priv = port;

    /* register frontend */
    result = dvb_register_frontend(&dvb->adapter, dvb->frontend);
    if (result < 0) {
        printk(KERN_ERR "%s: dvb_register_frontend failed "
               "(errno = %d)\n", DRIVER_NAME, result);
        goto fail_frontend;
    }

    /* register demux stuff */
    dvb->demux.dmx.capabilities =
        DMX_TS_FILTERING | DMX_SECTION_FILTERING |
        DMX_MEMORY_BASED_FILTERING;
    dvb->demux.priv       = port;
    dvb->demux.filternum  = 256;
    dvb->demux.feednum    = 256;
    dvb->demux.start_feed = saa7164_dvb_start_feed;
    dvb->demux.stop_feed  = saa7164_dvb_stop_feed;
    result = dvb_dmx_init(&dvb->demux);
    if (result < 0) {
        printk(KERN_ERR "%s: dvb_dmx_init failed (errno = %d)\n",
               DRIVER_NAME, result);
        goto fail_dmx;
    }

    dvb->dmxdev.filternum    = 256;
    dvb->dmxdev.demux        = &dvb->demux.dmx;
    dvb->dmxdev.capabilities = 0;
    result = dvb_dmxdev_init(&dvb->dmxdev, &dvb->adapter);
    if (result < 0) {
        printk(KERN_ERR "%s: dvb_dmxdev_init failed (errno = %d)\n",
               DRIVER_NAME, result);
        goto fail_dmxdev;
    }

    dvb->fe_hw.source = DMX_FRONTEND_0;
    result = dvb->demux.dmx.add_frontend(&dvb->demux.dmx, &dvb->fe_hw);
    if (result < 0) {
        printk(KERN_ERR "%s: add_frontend failed "
               "(DMX_FRONTEND_0, errno = %d)\n", DRIVER_NAME, result);
        goto fail_fe_hw;
    }

    dvb->fe_mem.source = DMX_MEMORY_FE;
    result = dvb->demux.dmx.add_frontend(&dvb->demux.dmx, &dvb->fe_mem);
    if (result < 0) {
        printk(KERN_ERR "%s: add_frontend failed "
               "(DMX_MEMORY_FE, errno = %d)\n", DRIVER_NAME, result);
        goto fail_fe_mem;
    }

    result = dvb->demux.dmx.connect_frontend(&dvb->demux.dmx, &dvb->fe_hw);
    if (result < 0) {
        printk(KERN_ERR "%s: connect_frontend failed (errno = %d)\n",
               DRIVER_NAME, result);
        goto fail_fe_conn;
    }

    /* register network adapter */
    dvb_net_init(&dvb->adapter, &dvb->net, &dvb->demux.dmx);
    return 0;

fail_fe_conn:
    dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_mem);
fail_fe_mem:
    dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_hw);
fail_fe_hw:
    dvb_dmxdev_release(&dvb->dmxdev);
fail_dmxdev:
    dvb_dmx_release(&dvb->demux);
fail_dmx:
    dvb_unregister_frontend(dvb->frontend);
fail_frontend:
    dvb_frontend_detach(dvb->frontend);
    dvb_unregister_adapter(&dvb->adapter);
fail_adapter:
    return result;
}

int saa7164_dvb_unregister(struct saa7164_port *port)
{
    struct saa7164_dvb *dvb = &port->dvb;
    struct saa7164_dev *dev = port->dev;
    struct saa7164_buffer *b;
    struct list_head *c, *n;

    dprintk(DBGLVL_DVB, "%s()\n", __func__);

    if (port->type != SAA7164_MPEG_DVB)
        BUG();

    /* Remove any allocated buffers */
    mutex_lock(&port->dmaqueue_lock);
    list_for_each_safe(c, n, &port->dmaqueue.list) {
        b = list_entry(c, struct saa7164_buffer, list);
        list_del(c);
        saa7164_buffer_dealloc(b);
    }
    mutex_unlock(&port->dmaqueue_lock);

    if (dvb->frontend == NULL)
        return 0;

    dvb_net_release(&dvb->net);
    dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_mem);
    dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_hw);
    dvb_dmxdev_release(&dvb->dmxdev);
    dvb_dmx_release(&dvb->demux);
    dvb_unregister_frontend(dvb->frontend);
    dvb_frontend_detach(dvb->frontend);
    dvb_unregister_adapter(&dvb->adapter);
    return 0;
}

/* All the DVB attach calls go here, this function get's modified
 * for each new card.
 */
int saa7164_dvb_register(struct saa7164_port *port)
{
    struct saa7164_dev *dev = port->dev;
    struct saa7164_dvb *dvb = &port->dvb;
    struct saa7164_i2c *i2c_bus = NULL;
    int ret;

    dprintk(DBGLVL_DVB, "%s()\n", __func__);

    /* init frontend */
    switch (dev->board) {
    case SAA7164_BOARD_HAUPPAUGE_HVR2200:
    case SAA7164_BOARD_HAUPPAUGE_HVR2200_2:
    case SAA7164_BOARD_HAUPPAUGE_HVR2200_3:
    case SAA7164_BOARD_HAUPPAUGE_HVR2200_4:
    case SAA7164_BOARD_HAUPPAUGE_HVR2200_5:
        i2c_bus = &dev->i2c_bus[port->nr + 1];
        switch (port->nr) {
        case 0:
            port->dvb.frontend = dvb_attach(tda10048_attach,
                &hauppauge_hvr2200_1_config,
                &i2c_bus->i2c_adap);

            if (port->dvb.frontend != NULL) {
                /* TODO: addr is in the card struct */
                dvb_attach(tda18271_attach, port->dvb.frontend,
                    0xc0 >> 1, &i2c_bus->i2c_adap,
                    &hauppauge_hvr22x0_tuner_config);
            }

            break;
        case 1:
            port->dvb.frontend = dvb_attach(tda10048_attach,
                &hauppauge_hvr2200_2_config,
                &i2c_bus->i2c_adap);

            if (port->dvb.frontend != NULL) {
                /* TODO: addr is in the card struct */
                dvb_attach(tda18271_attach, port->dvb.frontend,
                    0xc0 >> 1, &i2c_bus->i2c_adap,
                    &hauppauge_hvr22x0s_tuner_config);
            }

            break;
        }
        break;
    case SAA7164_BOARD_HAUPPAUGE_HVR2250:
    case SAA7164_BOARD_HAUPPAUGE_HVR2250_2:
    case SAA7164_BOARD_HAUPPAUGE_HVR2250_3:
        i2c_bus = &dev->i2c_bus[port->nr + 1];

        port->dvb.frontend = dvb_attach(s5h1411_attach,
            &hauppauge_s5h1411_config,
            &i2c_bus->i2c_adap);

        if (port->dvb.frontend != NULL) {
            if (port->nr == 0) {
                /* Master TDA18271 */
                /* TODO: addr is in the card struct */
                dvb_attach(tda18271_attach, port->dvb.frontend,
                    0xc0 >> 1, &i2c_bus->i2c_adap,
                    &hauppauge_hvr22x0_tuner_config);
            } else {
                /* Slave TDA18271 */
                dvb_attach(tda18271_attach, port->dvb.frontend,
                    0xc0 >> 1, &i2c_bus->i2c_adap,
                    &hauppauge_hvr22x0s_tuner_config);
            }
        }

        break;
    default:
        printk(KERN_ERR "%s: The frontend isn't supported\n",
               dev->name);
        break;
    }
    if (NULL == dvb->frontend) {
        printk(KERN_ERR "%s() Frontend initialization failed\n",
               __func__);
        return -1;
    }

    /* register everything */
    ret = dvb_register(port);
    if (ret < 0) {
        if (dvb->frontend->ops.release)
            dvb->frontend->ops.release(dvb->frontend);
        return ret;
    }

    return 0;
}