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[/] [test_project/] [trunk/] [linux_sd_driver/] [drivers/] [media/] [video/] [msp3400-driver.c] - Blame information for rev 62

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/*
 * Programming the mspx4xx sound processor family
 *
 * (c) 1997-2001 Gerd Knorr <kraxel@bytesex.org>
 *
 * what works and what doesn't:
 *
 *  AM-Mono
 *      Support for Hauppauge cards added (decoding handled by tuner) added by
 *      Frederic Crozat <fcrozat@mail.dotcom.fr>
 *
 *  FM-Mono
 *      should work. The stereo modes are backward compatible to FM-mono,
 *      therefore FM-Mono should be allways available.
 *
 *  FM-Stereo (B/G, used in germany)
 *      should work, with autodetect
 *
 *  FM-Stereo (satellite)
 *      should work, no autodetect (i.e. default is mono, but you can
 *      switch to stereo -- untested)
 *
 *  NICAM (B/G, L , used in UK, Scandinavia, Spain and France)
 *      should work, with autodetect. Support for NICAM was added by
 *      Pekka Pietikainen <pp@netppl.fi>
 *
 * TODO:
 *   - better SAT support
 *
 * 980623  Thomas Sailer (sailer@ife.ee.ethz.ch)
 *         using soundcore instead of OSS
 *
 * 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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */
 
 
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/i2c.h>
#include <linux/videodev.h>
#include <linux/videodev2.h>
#include <media/v4l2-common.h>
#include <media/tvaudio.h>
#include <media/msp3400.h>
#include <linux/kthread.h>
#include <linux/freezer.h>
#include "msp3400-driver.h"
 
/* ---------------------------------------------------------------------- */
 
MODULE_DESCRIPTION("device driver for msp34xx TV sound processor");
MODULE_AUTHOR("Gerd Knorr");
MODULE_LICENSE("GPL");
 
/* module parameters */
static int opmode   = OPMODE_AUTO;
int msp_debug;           /* msp_debug output */
int msp_once;            /* no continous stereo monitoring */
int msp_amsound;         /* hard-wire AM sound at 6.5 Hz (france),
                            the autoscan seems work well only with FM... */
int msp_standard = 1;    /* Override auto detect of audio msp_standard, if needed. */
int msp_dolby;
 
int msp_stereo_thresh = 0x190; /* a2 threshold for stereo/bilingual
                                        (msp34xxg only) 0x00a0-0x03c0 */
 
/* read-only */
module_param(opmode,           int, 0444);
 
/* read-write */
module_param_named(once,msp_once,                      bool, 0644);
module_param_named(debug,msp_debug,                    int,  0644);
module_param_named(stereo_threshold,msp_stereo_thresh, int,  0644);
module_param_named(standard,msp_standard,              int,  0644);
module_param_named(amsound,msp_amsound,                bool, 0644);
module_param_named(dolby,msp_dolby,                    bool, 0644);
 
MODULE_PARM_DESC(opmode, "Forces a MSP3400 opmode. 0=Manual, 1=Autodetect, 2=Autodetect and autoselect");
MODULE_PARM_DESC(once, "No continuous stereo monitoring");
MODULE_PARM_DESC(debug, "Enable debug messages [0-3]");
MODULE_PARM_DESC(stereo_threshold, "Sets signal threshold to activate stereo");
MODULE_PARM_DESC(standard, "Specify audio standard: 32 = NTSC, 64 = radio, Default: Autodetect");
MODULE_PARM_DESC(amsound, "Hardwire AM sound at 6.5Hz (France), FM can autoscan");
MODULE_PARM_DESC(dolby, "Activates Dolby processsing");
 
/* ---------------------------------------------------------------------- */
 
/* control subaddress */
#define I2C_MSP_CONTROL 0x00
/* demodulator unit subaddress */
#define I2C_MSP_DEM     0x10
/* DSP unit subaddress */
#define I2C_MSP_DSP     0x12
 
/* Addresses to scan */
static unsigned short normal_i2c[] = { 0x80 >> 1, 0x88 >> 1, I2C_CLIENT_END };
I2C_CLIENT_INSMOD;
 
/* ----------------------------------------------------------------------- */
/* functions for talking to the MSP3400C Sound processor                   */
 
int msp_reset(struct i2c_client *client)
{
        /* reset and read revision code */
        static u8 reset_off[3] = { I2C_MSP_CONTROL, 0x80, 0x00 };
        static u8 reset_on[3]  = { I2C_MSP_CONTROL, 0x00, 0x00 };
        static u8 write[3]     = { I2C_MSP_DSP + 1, 0x00, 0x1e };
        u8 read[2];
        struct i2c_msg reset[2] = {
                { client->addr, I2C_M_IGNORE_NAK, 3, reset_off },
                { client->addr, I2C_M_IGNORE_NAK, 3, reset_on  },
        };
        struct i2c_msg test[2] = {
                { client->addr, 0,        3, write },
                { client->addr, I2C_M_RD, 2, read  },
        };
 
        v4l_dbg(3, msp_debug, client, "msp_reset\n");
        if (i2c_transfer(client->adapter, &reset[0], 1) != 1 ||
            i2c_transfer(client->adapter, &reset[1], 1) != 1 ||
            i2c_transfer(client->adapter, test, 2) != 2) {
                v4l_err(client, "chip reset failed\n");
                return -1;
        }
        return 0;
}
 
static int msp_read(struct i2c_client *client, int dev, int addr)
{
        int err, retval;
        u8 write[3];
        u8 read[2];
        struct i2c_msg msgs[2] = {
                { client->addr, 0,        3, write },
                { client->addr, I2C_M_RD, 2, read  }
        };
 
        write[0] = dev + 1;
        write[1] = addr >> 8;
        write[2] = addr & 0xff;
 
        for (err = 0; err < 3; err++) {
                if (i2c_transfer(client->adapter, msgs, 2) == 2)
                        break;
                v4l_warn(client, "I/O error #%d (read 0x%02x/0x%02x)\n", err,
                       dev, addr);
                schedule_timeout_interruptible(msecs_to_jiffies(10));
        }
        if (err == 3) {
                v4l_warn(client, "giving up, resetting chip. Sound will go off, sorry folks :-|\n");
                msp_reset(client);
                return -1;
        }
        retval = read[0] << 8 | read[1];
        v4l_dbg(3, msp_debug, client, "msp_read(0x%x, 0x%x): 0x%x\n", dev, addr, retval);
        return retval;
}
 
int msp_read_dem(struct i2c_client *client, int addr)
{
        return msp_read(client, I2C_MSP_DEM, addr);
}
 
int msp_read_dsp(struct i2c_client *client, int addr)
{
        return msp_read(client, I2C_MSP_DSP, addr);
}
 
static int msp_write(struct i2c_client *client, int dev, int addr, int val)
{
        int err;
        u8 buffer[5];
 
        buffer[0] = dev;
        buffer[1] = addr >> 8;
        buffer[2] = addr &  0xff;
        buffer[3] = val  >> 8;
        buffer[4] = val  &  0xff;
 
        v4l_dbg(3, msp_debug, client, "msp_write(0x%x, 0x%x, 0x%x)\n", dev, addr, val);
        for (err = 0; err < 3; err++) {
                if (i2c_master_send(client, buffer, 5) == 5)
                        break;
                v4l_warn(client, "I/O error #%d (write 0x%02x/0x%02x)\n", err,
                       dev, addr);
                schedule_timeout_interruptible(msecs_to_jiffies(10));
        }
        if (err == 3) {
                v4l_warn(client, "giving up, resetting chip. Sound will go off, sorry folks :-|\n");
                msp_reset(client);
                return -1;
        }
        return 0;
}
 
int msp_write_dem(struct i2c_client *client, int addr, int val)
{
        return msp_write(client, I2C_MSP_DEM, addr, val);
}
 
int msp_write_dsp(struct i2c_client *client, int addr, int val)
{
        return msp_write(client, I2C_MSP_DSP, addr, val);
}
 
/* ----------------------------------------------------------------------- *
 * bits  9  8  5 - SCART DSP input Select:
 *       0  0  0 - SCART 1 to DSP input (reset position)
 *       0  1  0 - MONO to DSP input
 *       1  0  0 - SCART 2 to DSP input
 *       1  1  1 - Mute DSP input
 *
 * bits 11 10  6 - SCART 1 Output Select:
 *       0  0  0 - undefined (reset position)
 *       0  1  0 - SCART 2 Input to SCART 1 Output (for devices with 2 SCARTS)
 *       1  0  0 - MONO input to SCART 1 Output
 *       1  1  0 - SCART 1 DA to SCART 1 Output
 *       0  0  1 - SCART 2 DA to SCART 1 Output
 *       0  1  1 - SCART 1 Input to SCART 1 Output
 *       1  1  1 - Mute SCART 1 Output
 *
 * bits 13 12  7 - SCART 2 Output Select (for devices with 2 Output SCART):
 *       0  0  0 - SCART 1 DA to SCART 2 Output (reset position)
 *       0  1  0 - SCART 1 Input to SCART 2 Output
 *       1  0  0 - MONO input to SCART 2 Output
 *       0  0  1 - SCART 2 DA to SCART 2 Output
 *       0  1  1 - SCART 2 Input to SCART 2 Output
 *       1  1  0 - Mute SCART 2 Output
 *
 * Bits 4 to 0 should be zero.
 * ----------------------------------------------------------------------- */
 
static int scarts[3][9] = {
        /* MASK   IN1     IN2     IN3     IN4     IN1_DA  IN2_DA  MONO    MUTE   */
        /* SCART DSP Input select */
        { 0x0320, 0x0000, 0x0200, 0x0300, 0x0020, -1,     -1,     0x0100, 0x0320 },
        /* SCART1 Output select */
        { 0x0c40, 0x0440, 0x0400, 0x0000, 0x0840, 0x0c00, 0x0040, 0x0800, 0x0c40 },
        /* SCART2 Output select */
        { 0x3080, 0x1000, 0x1080, 0x2080, 0x3080, 0x0000, 0x0080, 0x2000, 0x3000 },
};
 
static char *scart_names[] = {
        "in1", "in2", "in3", "in4", "in1 da", "in2 da", "mono", "mute"
};
 
void msp_set_scart(struct i2c_client *client, int in, int out)
{
        struct msp_state *state = i2c_get_clientdata(client);
 
        state->in_scart = in;
 
        if (in >= 0 && in <= 7 && out >= 0 && out <= 2) {
                if (-1 == scarts[out][in + 1])
                        return;
 
                state->acb &= ~scarts[out][0];
                state->acb |=  scarts[out][in + 1];
        } else
                state->acb = 0xf60; /* Mute Input and SCART 1 Output */
 
        v4l_dbg(1, msp_debug, client, "scart switch: %s => %d (ACB=0x%04x)\n",
                                                scart_names[in], out, state->acb);
        msp_write_dsp(client, 0x13, state->acb);
 
        /* Sets I2S speed 0 = 1.024 Mbps, 1 = 2.048 Mbps */
        if (state->has_i2s_conf)
                msp_write_dem(client, 0x40, state->i2s_mode);
}
 
void msp_set_audio(struct i2c_client *client)
{
        struct msp_state *state = i2c_get_clientdata(client);
        int bal = 0, bass, treble, loudness;
        int val = 0;
        int reallymuted = state->muted | state->scan_in_progress;
 
        if (!reallymuted)
                val = (state->volume * 0x7f / 65535) << 8;
 
        v4l_dbg(1, msp_debug, client, "mute=%s scanning=%s volume=%d\n",
                state->muted ? "on" : "off", state->scan_in_progress ? "yes" : "no",
                state->volume);
 
        msp_write_dsp(client, 0x0000, val);
        msp_write_dsp(client, 0x0007, reallymuted ? 0x1 : (val | 0x1));
        if (state->has_scart2_out_volume)
                msp_write_dsp(client, 0x0040, reallymuted ? 0x1 : (val | 0x1));
        if (state->has_headphones)
                msp_write_dsp(client, 0x0006, val);
        if (!state->has_sound_processing)
                return;
 
        if (val)
                bal = (u8)((state->balance / 256) - 128);
        bass = ((state->bass - 32768) * 0x60 / 65535) << 8;
        treble = ((state->treble - 32768) * 0x60 / 65535) << 8;
        loudness = state->loudness ? ((5 * 4) << 8) : 0;
 
        v4l_dbg(1, msp_debug, client, "balance=%d bass=%d treble=%d loudness=%d\n",
                state->balance, state->bass, state->treble, state->loudness);
 
        msp_write_dsp(client, 0x0001, bal << 8);
        msp_write_dsp(client, 0x0002, bass);
        msp_write_dsp(client, 0x0003, treble);
        msp_write_dsp(client, 0x0004, loudness);
        if (!state->has_headphones)
                return;
        msp_write_dsp(client, 0x0030, bal << 8);
        msp_write_dsp(client, 0x0031, bass);
        msp_write_dsp(client, 0x0032, treble);
        msp_write_dsp(client, 0x0033, loudness);
}
 
/* ------------------------------------------------------------------------ */
 
 
static void msp_wake_thread(struct i2c_client *client)
{
        struct msp_state *state = i2c_get_clientdata(client);
 
        if (NULL == state->kthread)
                return;
        state->watch_stereo = 0;
        state->restart = 1;
        wake_up_interruptible(&state->wq);
}
 
int msp_sleep(struct msp_state *state, int timeout)
{
        DECLARE_WAITQUEUE(wait, current);
 
        add_wait_queue(&state->wq, &wait);
        if (!kthread_should_stop()) {
                if (timeout < 0) {
                        set_current_state(TASK_INTERRUPTIBLE);
                        schedule();
                } else {
                        schedule_timeout_interruptible
                                                (msecs_to_jiffies(timeout));
                }
        }
 
        remove_wait_queue(&state->wq, &wait);
        try_to_freeze();
        return state->restart;
}
 
/* ------------------------------------------------------------------------ */
#ifdef CONFIG_VIDEO_V4L1
static int msp_mode_v4l2_to_v4l1(int rxsubchans, int audmode)
{
        if (rxsubchans == V4L2_TUNER_SUB_MONO)
                return VIDEO_SOUND_MONO;
        if (rxsubchans == V4L2_TUNER_SUB_STEREO)
                return VIDEO_SOUND_STEREO;
        if (audmode == V4L2_TUNER_MODE_LANG2)
                return VIDEO_SOUND_LANG2;
        return VIDEO_SOUND_LANG1;
}
 
static int msp_mode_v4l1_to_v4l2(int mode)
{
        if (mode & VIDEO_SOUND_STEREO)
                return V4L2_TUNER_MODE_STEREO;
        if (mode & VIDEO_SOUND_LANG2)
                return V4L2_TUNER_MODE_LANG2;
        if (mode & VIDEO_SOUND_LANG1)
                return V4L2_TUNER_MODE_LANG1;
        return V4L2_TUNER_MODE_MONO;
}
#endif
 
static int msp_get_ctrl(struct i2c_client *client, struct v4l2_control *ctrl)
{
        struct msp_state *state = i2c_get_clientdata(client);
 
        switch (ctrl->id) {
        case V4L2_CID_AUDIO_VOLUME:
                ctrl->value = state->volume;
                break;
 
        case V4L2_CID_AUDIO_MUTE:
                ctrl->value = state->muted;
                break;
 
        case V4L2_CID_AUDIO_BALANCE:
                if (!state->has_sound_processing)
                        return -EINVAL;
                ctrl->value = state->balance;
                break;
 
        case V4L2_CID_AUDIO_BASS:
                if (!state->has_sound_processing)
                        return -EINVAL;
                ctrl->value = state->bass;
                break;
 
        case V4L2_CID_AUDIO_TREBLE:
                if (!state->has_sound_processing)
                        return -EINVAL;
                ctrl->value = state->treble;
                break;
 
        case V4L2_CID_AUDIO_LOUDNESS:
                if (!state->has_sound_processing)
                        return -EINVAL;
                ctrl->value = state->loudness;
                break;
 
        default:
                return -EINVAL;
        }
        return 0;
}
 
static int msp_set_ctrl(struct i2c_client *client, struct v4l2_control *ctrl)
{
        struct msp_state *state = i2c_get_clientdata(client);
 
        switch (ctrl->id) {
        case V4L2_CID_AUDIO_VOLUME:
                state->volume = ctrl->value;
                if (state->volume == 0)
                        state->balance = 32768;
                break;
 
        case V4L2_CID_AUDIO_MUTE:
                if (ctrl->value < 0 || ctrl->value >= 2)
                        return -ERANGE;
                state->muted = ctrl->value;
                break;
 
        case V4L2_CID_AUDIO_BASS:
                if (!state->has_sound_processing)
                        return -EINVAL;
                state->bass = ctrl->value;
                break;
 
        case V4L2_CID_AUDIO_TREBLE:
                if (!state->has_sound_processing)
                        return -EINVAL;
                state->treble = ctrl->value;
                break;
 
        case V4L2_CID_AUDIO_LOUDNESS:
                if (!state->has_sound_processing)
                        return -EINVAL;
                state->loudness = ctrl->value;
                break;
 
        case V4L2_CID_AUDIO_BALANCE:
                if (!state->has_sound_processing)
                        return -EINVAL;
                state->balance = ctrl->value;
                break;
 
        default:
                return -EINVAL;
        }
        msp_set_audio(client);
        return 0;
}
 
static int msp_command(struct i2c_client *client, unsigned int cmd, void *arg)
{
        struct msp_state *state = i2c_get_clientdata(client);
 
        if (msp_debug >= 2)
                v4l_i2c_print_ioctl(client, cmd);
 
        switch (cmd) {
        case AUDC_SET_RADIO:
                if (state->radio)
                        return 0;
                state->radio = 1;
                v4l_dbg(1, msp_debug, client, "switching to radio mode\n");
                state->watch_stereo = 0;
                switch (state->opmode) {
                case OPMODE_MANUAL:
                        /* set msp3400 to FM radio mode */
                        msp3400c_set_mode(client, MSP_MODE_FM_RADIO);
                        msp3400c_set_carrier(client, MSP_CARRIER(10.7),
                                            MSP_CARRIER(10.7));
                        msp_set_audio(client);
                        break;
                case OPMODE_AUTODETECT:
                case OPMODE_AUTOSELECT:
                        /* the thread will do for us */
                        msp_wake_thread(client);
                        break;
                }
                break;
 
        /* --- v4l ioctls --- */
        /* take care: bttv does userspace copying, we'll get a
           kernel pointer here... */
#ifdef CONFIG_VIDEO_V4L1
        case VIDIOCGAUDIO:
        {
                struct video_audio *va = arg;
 
                va->flags |= VIDEO_AUDIO_VOLUME | VIDEO_AUDIO_MUTABLE;
                if (state->has_sound_processing)
                        va->flags |= VIDEO_AUDIO_BALANCE |
                                VIDEO_AUDIO_BASS |
                                VIDEO_AUDIO_TREBLE;
                if (state->muted)
                        va->flags |= VIDEO_AUDIO_MUTE;
                va->volume = state->volume;
                va->balance = state->volume ? state->balance : 32768;
                va->bass = state->bass;
                va->treble = state->treble;
 
                if (state->radio)
                        break;
                if (state->opmode == OPMODE_AUTOSELECT)
                        msp_detect_stereo(client);
                va->mode = msp_mode_v4l2_to_v4l1(state->rxsubchans, state->audmode);
                break;
        }
 
        case VIDIOCSAUDIO:
        {
                struct video_audio *va = arg;
 
                state->muted = (va->flags & VIDEO_AUDIO_MUTE);
                state->volume = va->volume;
                state->balance = va->balance;
                state->bass = va->bass;
                state->treble = va->treble;
                msp_set_audio(client);
 
                if (va->mode != 0 && state->radio == 0 &&
                    state->audmode != msp_mode_v4l1_to_v4l2(va->mode)) {
                        state->audmode = msp_mode_v4l1_to_v4l2(va->mode);
                        msp_set_audmode(client);
                }
                break;
        }
 
        case VIDIOCSCHAN:
        {
                struct video_channel *vc = arg;
                int update = 0;
                v4l2_std_id std;
 
                if (state->radio)
                        update = 1;
                state->radio = 0;
                if (vc->norm == VIDEO_MODE_PAL)
                        std = V4L2_STD_PAL;
                else if (vc->norm == VIDEO_MODE_SECAM)
                        std = V4L2_STD_SECAM;
                else
                        std = V4L2_STD_NTSC;
                if (std != state->v4l2_std) {
                        state->v4l2_std = std;
                        update = 1;
                }
                if (update)
                        msp_wake_thread(client);
                break;
        }
 
        case VIDIOCSFREQ:
        {
                /* new channel -- kick audio carrier scan */
                msp_wake_thread(client);
                break;
        }
#endif
        case VIDIOC_S_FREQUENCY:
        {
                /* new channel -- kick audio carrier scan */
                msp_wake_thread(client);
                break;
        }
 
        /* --- v4l2 ioctls --- */
        case VIDIOC_S_STD:
        {
                v4l2_std_id *id = arg;
                int update = state->radio || state->v4l2_std != *id;
 
                state->v4l2_std = *id;
                state->radio = 0;
                if (update)
                        msp_wake_thread(client);
                return 0;
        }
 
        case VIDIOC_INT_G_AUDIO_ROUTING:
        {
                struct v4l2_routing *rt = arg;
 
                *rt = state->routing;
                break;
        }
 
        case VIDIOC_INT_S_AUDIO_ROUTING:
        {
                struct v4l2_routing *rt = arg;
                int tuner = (rt->input >> 3) & 1;
                int sc_in = rt->input & 0x7;
                int sc1_out = rt->output & 0xf;
                int sc2_out = (rt->output >> 4) & 0xf;
                u16 val, reg;
                int i;
                int extern_input = 1;
 
                if (state->routing.input == rt->input &&
                    state->routing.output == rt->output)
                        break;
                state->routing = *rt;
                /* check if the tuner input is used */
                for (i = 0; i < 5; i++) {
                        if (((rt->input >> (4 + i * 4)) & 0xf) == 0)
                                extern_input = 0;
                }
                state->mode = extern_input ? MSP_MODE_EXTERN : MSP_MODE_AM_DETECT;
                state->rxsubchans = V4L2_TUNER_SUB_STEREO;
                msp_set_scart(client, sc_in, 0);
                msp_set_scart(client, sc1_out, 1);
                msp_set_scart(client, sc2_out, 2);
                msp_set_audmode(client);
                reg = (state->opmode == OPMODE_AUTOSELECT) ? 0x30 : 0xbb;
                val = msp_read_dem(client, reg);
                msp_write_dem(client, reg, (val & ~0x100) | (tuner << 8));
                /* wake thread when a new input is chosen */
                msp_wake_thread(client);
                break;
        }
 
        case VIDIOC_G_TUNER:
        {
                struct v4l2_tuner *vt = arg;
 
                if (state->radio)
                        break;
                if (state->opmode == OPMODE_AUTOSELECT)
                        msp_detect_stereo(client);
                vt->audmode    = state->audmode;
                vt->rxsubchans = state->rxsubchans;
                vt->capability |= V4L2_TUNER_CAP_STEREO |
                        V4L2_TUNER_CAP_LANG1 | V4L2_TUNER_CAP_LANG2;
                break;
        }
 
        case VIDIOC_S_TUNER:
        {
                struct v4l2_tuner *vt = (struct v4l2_tuner *)arg;
 
                if (state->radio)  /* TODO: add mono/stereo support for radio */
                        break;
                if (state->audmode == vt->audmode)
                        break;
                state->audmode = vt->audmode;
                /* only set audmode */
                msp_set_audmode(client);
                break;
        }
 
        case VIDIOC_INT_I2S_CLOCK_FREQ:
        {
                u32 *a = (u32 *)arg;
 
                v4l_dbg(1, msp_debug, client, "Setting I2S speed to %d\n", *a);
 
                switch (*a) {
                        case 1024000:
                                state->i2s_mode = 0;
                                break;
                        case 2048000:
                                state->i2s_mode = 1;
                                break;
                        default:
                                return -EINVAL;
                }
                break;
        }
 
        case VIDIOC_QUERYCTRL:
        {
                struct v4l2_queryctrl *qc = arg;
 
                switch (qc->id) {
                        case V4L2_CID_AUDIO_VOLUME:
                        case V4L2_CID_AUDIO_MUTE:
                                return v4l2_ctrl_query_fill_std(qc);
                        default:
                                break;
                }
                if (!state->has_sound_processing)
                        return -EINVAL;
                switch (qc->id) {
                        case V4L2_CID_AUDIO_LOUDNESS:
                        case V4L2_CID_AUDIO_BALANCE:
                        case V4L2_CID_AUDIO_BASS:
                        case V4L2_CID_AUDIO_TREBLE:
                                return v4l2_ctrl_query_fill_std(qc);
                        default:
                                return -EINVAL;
                }
        }
 
        case VIDIOC_G_CTRL:
                return msp_get_ctrl(client, arg);
 
        case VIDIOC_S_CTRL:
                return msp_set_ctrl(client, arg);
 
        case VIDIOC_LOG_STATUS:
        {
                const char *p;
 
                if (state->opmode == OPMODE_AUTOSELECT)
                        msp_detect_stereo(client);
                v4l_info(client, "%s rev1 = 0x%04x rev2 = 0x%04x\n",
                                client->name, state->rev1, state->rev2);
                v4l_info(client, "Audio:    volume %d%s\n",
                                state->volume, state->muted ? " (muted)" : "");
                if (state->has_sound_processing) {
                        v4l_info(client, "Audio:    balance %d bass %d treble %d loudness %s\n",
                                        state->balance, state->bass, state->treble,
                                        state->loudness ? "on" : "off");
                }
                switch (state->mode) {
                case MSP_MODE_AM_DETECT: p = "AM (for carrier detect)"; break;
                case MSP_MODE_FM_RADIO: p = "FM Radio"; break;
                case MSP_MODE_FM_TERRA: p = "Terrestial FM-mono + FM-stereo"; break;
                case MSP_MODE_FM_SAT: p = "Satellite FM-mono"; break;
                case MSP_MODE_FM_NICAM1: p = "NICAM/FM (B/G, D/K)"; break;
                case MSP_MODE_FM_NICAM2: p = "NICAM/FM (I)"; break;
                case MSP_MODE_AM_NICAM: p = "NICAM/AM (L)"; break;
                case MSP_MODE_BTSC: p = "BTSC"; break;
                case MSP_MODE_EXTERN: p = "External input"; break;
                default: p = "unknown"; break;
                }
                if (state->mode == MSP_MODE_EXTERN) {
                        v4l_info(client, "Mode:     %s\n", p);
                } else if (state->opmode == OPMODE_MANUAL) {
                        v4l_info(client, "Mode:     %s (%s%s)\n", p,
                                (state->rxsubchans & V4L2_TUNER_SUB_STEREO) ? "stereo" : "mono",
                                (state->rxsubchans & V4L2_TUNER_SUB_LANG2) ? ", dual" : "");
                } else {
                        if (state->opmode == OPMODE_AUTODETECT)
                                v4l_info(client, "Mode:     %s\n", p);
                        v4l_info(client, "Standard: %s (%s%s)\n",
                                msp_standard_std_name(state->std),
                                (state->rxsubchans & V4L2_TUNER_SUB_STEREO) ? "stereo" : "mono",
                                (state->rxsubchans & V4L2_TUNER_SUB_LANG2) ? ", dual" : "");
                }
                v4l_info(client, "Audmode:  0x%04x\n", state->audmode);
                v4l_info(client, "Routing:  0x%08x (input) 0x%08x (output)\n",
                                state->routing.input, state->routing.output);
                v4l_info(client, "ACB:      0x%04x\n", state->acb);
                break;
        }
 
        case VIDIOC_G_CHIP_IDENT:
                return v4l2_chip_ident_i2c_client(client, arg, state->ident, (state->rev1 << 16) | state->rev2);
 
        default:
                /* unknown */
                return -EINVAL;
        }
        return 0;
}
 
static int msp_suspend(struct i2c_client *client, pm_message_t state)
{
 
        v4l_dbg(1, msp_debug, client, "suspend\n");
        msp_reset(client);
        return 0;
}
 
static int msp_resume(struct i2c_client *client)
{
 
        v4l_dbg(1, msp_debug, client, "resume\n");
        msp_wake_thread(client);
        return 0;
}
 
/* ----------------------------------------------------------------------- */
 
static struct i2c_driver i2c_driver;
 
static int msp_attach(struct i2c_adapter *adapter, int address, int kind)
{
        struct i2c_client *client;
        struct msp_state *state;
        int (*thread_func)(void *data) = NULL;
        int msp_hard;
        int msp_family;
        int msp_revision;
        int msp_product, msp_prod_hi, msp_prod_lo;
        int msp_rom;
 
        client = kzalloc(sizeof(*client), GFP_KERNEL);
        if (!client)
                return -ENOMEM;
 
        client->addr = address;
        client->adapter = adapter;
        client->driver = &i2c_driver;
        snprintf(client->name, sizeof(client->name) - 1, "msp3400");
 
        if (msp_reset(client) == -1) {
                v4l_dbg(1, msp_debug, client, "msp3400 not found\n");
                kfree(client);
                return 0;
        }
 
        state = kzalloc(sizeof(*state), GFP_KERNEL);
        if (!state) {
                kfree(client);
                return -ENOMEM;
        }
 
        i2c_set_clientdata(client, state);
 
        state->v4l2_std = V4L2_STD_NTSC;
        state->audmode = V4L2_TUNER_MODE_STEREO;
        state->volume = 58880;  /* 0db gain */
        state->balance = 32768; /* 0db gain */
        state->bass = 32768;
        state->treble = 32768;
        state->loudness = 0;
        state->input = -1;
        state->muted = 0;
        state->i2s_mode = 0;
        init_waitqueue_head(&state->wq);
        /* These are the reset input/output positions */
        state->routing.input = MSP_INPUT_DEFAULT;
        state->routing.output = MSP_OUTPUT_DEFAULT;
 
        state->rev1 = msp_read_dsp(client, 0x1e);
        if (state->rev1 != -1)
                state->rev2 = msp_read_dsp(client, 0x1f);
        v4l_dbg(1, msp_debug, client, "rev1=0x%04x, rev2=0x%04x\n", state->rev1, state->rev2);
        if (state->rev1 == -1 || (state->rev1 == 0 && state->rev2 == 0)) {
                v4l_dbg(1, msp_debug, client, "not an msp3400 (cannot read chip version)\n");
                kfree(state);
                kfree(client);
                return 0;
        }
 
        msp_set_audio(client);
 
        msp_family = ((state->rev1 >> 4) & 0x0f) + 3;
        msp_product = (state->rev2 >> 8) & 0xff;
        msp_prod_hi = msp_product / 10;
        msp_prod_lo = msp_product % 10;
        msp_revision = (state->rev1 & 0x0f) + '@';
        msp_hard = ((state->rev1 >> 8) & 0xff) + '@';
        msp_rom = state->rev2 & 0x1f;
        snprintf(client->name, sizeof(client->name), "MSP%d4%02d%c-%c%d",
                        msp_family, msp_product,
                        msp_revision, msp_hard, msp_rom);
        /* Rev B=2, C=3, D=4, G=7 */
        state->ident = msp_family * 10000 + 4000 + msp_product * 10 + msp_revision - '@';
 
        /* Has NICAM support: all mspx41x and mspx45x products have NICAM */
        state->has_nicam = msp_prod_hi == 1 || msp_prod_hi == 5;
        /* Has radio support: was added with revision G */
        state->has_radio = msp_revision >= 'G';
        /* Has headphones output: not for stripped down products */
        state->has_headphones = msp_prod_lo < 5;
        /* Has scart2 input: not in stripped down products of the '3' family */
        state->has_scart2 = msp_family >= 4 || msp_prod_lo < 7;
        /* Has scart3 input: not in stripped down products of the '3' family */
        state->has_scart3 = msp_family >= 4 || msp_prod_lo < 5;
        /* Has scart4 input: not in pre D revisions, not in stripped D revs */
        state->has_scart4 = msp_family >= 4 || (msp_revision >= 'D' && msp_prod_lo < 5);
        /* Has scart2 output: not in stripped down products of the '3' family */
        state->has_scart2_out = msp_family >= 4 || msp_prod_lo < 5;
        /* Has scart2 a volume control? Not in pre-D revisions. */
        state->has_scart2_out_volume = msp_revision > 'C' && state->has_scart2_out;
        /* Has a configurable i2s out? */
        state->has_i2s_conf = msp_revision >= 'G' && msp_prod_lo < 7;
        /* Has subwoofer output: not in pre-D revs and not in stripped down products */
        state->has_subwoofer = msp_revision >= 'D' && msp_prod_lo < 5;
        /* Has soundprocessing (bass/treble/balance/loudness/equalizer): not in
           stripped down products */
        state->has_sound_processing = msp_prod_lo < 7;
        /* Has Virtual Dolby Surround: only in msp34x1 */
        state->has_virtual_dolby_surround = msp_revision == 'G' && msp_prod_lo == 1;
        /* Has Virtual Dolby Surround & Dolby Pro Logic: only in msp34x2 */
        state->has_dolby_pro_logic = msp_revision == 'G' && msp_prod_lo == 2;
        /* The msp343xG supports BTSC only and cannot do Automatic Standard Detection. */
        state->force_btsc = msp_family == 3 && msp_revision == 'G' && msp_prod_hi == 3;
 
        state->opmode = opmode;
        if (state->opmode == OPMODE_AUTO) {
                /* MSP revision G and up have both autodetect and autoselect */
                if (msp_revision >= 'G')
                        state->opmode = OPMODE_AUTOSELECT;
                /* MSP revision D and up have autodetect */
                else if (msp_revision >= 'D')
                        state->opmode = OPMODE_AUTODETECT;
                else
                        state->opmode = OPMODE_MANUAL;
        }
 
        /* hello world :-) */
        v4l_info(client, "%s found @ 0x%x (%s)\n", client->name, address << 1, adapter->name);
        v4l_info(client, "%s ", client->name);
        if (state->has_nicam && state->has_radio)
                printk("supports nicam and radio, ");
        else if (state->has_nicam)
                printk("supports nicam, ");
        else if (state->has_radio)
                printk("supports radio, ");
        printk("mode is ");
 
        /* version-specific initialization */
        switch (state->opmode) {
        case OPMODE_MANUAL:
                printk("manual");
                thread_func = msp3400c_thread;
                break;
        case OPMODE_AUTODETECT:
                printk("autodetect");
                thread_func = msp3410d_thread;
                break;
        case OPMODE_AUTOSELECT:
                printk("autodetect and autoselect");
                thread_func = msp34xxg_thread;
                break;
        }
        printk("\n");
 
        /* startup control thread if needed */
        if (thread_func) {
                state->kthread = kthread_run(thread_func, client, "msp34xx");
 
                if (IS_ERR(state->kthread))
                        v4l_warn(client, "kernel_thread() failed\n");
                msp_wake_thread(client);
        }
 
        /* done */
        i2c_attach_client(client);
 
        return 0;
}
 
static int msp_probe(struct i2c_adapter *adapter)
{
        if (adapter->class & I2C_CLASS_TV_ANALOG)
                return i2c_probe(adapter, &addr_data, msp_attach);
        return 0;
}
 
static int msp_detach(struct i2c_client *client)
{
        struct msp_state *state = i2c_get_clientdata(client);
        int err;
 
        /* shutdown control thread */
        if (state->kthread) {
                state->restart = 1;
                kthread_stop(state->kthread);
        }
        msp_reset(client);
 
        err = i2c_detach_client(client);
        if (err) {
                return err;
        }
 
        kfree(state);
        kfree(client);
        return 0;
}
 
/* ----------------------------------------------------------------------- */
 
/* i2c implementation */
static struct i2c_driver i2c_driver = {
        .id             = I2C_DRIVERID_MSP3400,
        .attach_adapter = msp_probe,
        .detach_client  = msp_detach,
        .suspend = msp_suspend,
        .resume  = msp_resume,
        .command        = msp_command,
        .driver = {
                .name    = "msp3400",
        },
};
 
static int __init msp3400_init_module(void)
{
        return i2c_add_driver(&i2c_driver);
}
 
static void __exit msp3400_cleanup_module(void)
{
        i2c_del_driver(&i2c_driver);
}
 
module_init(msp3400_init_module);
module_exit(msp3400_cleanup_module);
 
/*
 * Overrides for Emacs so that we follow Linus's tabbing style.
 * ---------------------------------------------------------------------------
 * Local variables:
 * c-basic-offset: 8
 * End:
 */
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[/] [test_project/] [trunk/] [linux_sd_driver/] [drivers/] [media/] [video/] [msp3400-driver.c] - Blame information for rev 62

Line No.	Rev	Author	Line
1	62	marcus.erl	`/*`
2			`* Programming the mspx4xx sound processor family`
3			`*`
4			`* (c) 1997-2001 Gerd Knorr <kraxel@bytesex.org>`
5			`*`
6			`* what works and what doesn't:`
7			`*`
8			`* AM-Mono`
9			`* Support for Hauppauge cards added (decoding handled by tuner) added by`
10			`* Frederic Crozat <fcrozat@mail.dotcom.fr>`
11			`*`
12			`* FM-Mono`
13			`* should work. The stereo modes are backward compatible to FM-mono,`
14			`* therefore FM-Mono should be allways available.`
15			`*`
16			`* FM-Stereo (B/G, used in germany)`
17			`* should work, with autodetect`
18			`*`
19			`* FM-Stereo (satellite)`
20			`* should work, no autodetect (i.e. default is mono, but you can`
21			`* switch to stereo -- untested)`
22			`*`
23			`* NICAM (B/G, L , used in UK, Scandinavia, Spain and France)`
24			`* should work, with autodetect. Support for NICAM was added by`
25			`* Pekka Pietikainen <pp@netppl.fi>`
26			`*`
27			`* TODO:`
28			`* - better SAT support`
29			`*`
30			`* 980623 Thomas Sailer (sailer@ife.ee.ethz.ch)`
31			`* using soundcore instead of OSS`
32			`*`
33			`* This program is free software; you can redistribute it and/or`
34			`* modify it under the terms of the GNU General Public License`
35			`* as published by the Free Software Foundation; either version 2`
36			`* of the License, or (at your option) any later version.`
37			`*`
38			`* This program is distributed in the hope that it will be useful,`
39			`* but WITHOUT ANY WARRANTY; without even the implied warranty of`
40			`* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the`