| /* |
| * |
| * i2c tv tuner chip device driver |
| * core core, i.e. kernel interfaces, registering and so on |
| */ |
| |
| #include <linux/module.h> |
| #include <linux/moduleparam.h> |
| #include <linux/kernel.h> |
| #include <linux/sched.h> |
| #include <linux/string.h> |
| #include <linux/timer.h> |
| #include <linux/delay.h> |
| #include <linux/errno.h> |
| #include <linux/slab.h> |
| #include <linux/poll.h> |
| #include <linux/i2c.h> |
| #include <linux/types.h> |
| #include <linux/videodev.h> |
| #include <linux/init.h> |
| |
| #include <media/tuner.h> |
| #include <media/audiochip.h> |
| |
| #include "msp3400.h" |
| |
| #define UNSET (-1U) |
| |
| /* standard i2c insmod options */ |
| static unsigned short normal_i2c[] = { |
| 0x42, 0x43, 0x4a, 0x4b, /* tda8290 */ |
| 0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, |
| 0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f, |
| I2C_CLIENT_END |
| }; |
| |
| I2C_CLIENT_INSMOD; |
| |
| /* insmod options used at init time => read/only */ |
| static unsigned int addr = 0; |
| module_param(addr, int, 0444); |
| |
| static unsigned int no_autodetect = 0; |
| module_param(no_autodetect, int, 0444); |
| |
| static unsigned int show_i2c = 0; |
| module_param(show_i2c, int, 0444); |
| |
| /* insmod options used at runtime => read/write */ |
| unsigned int tuner_debug = 0; |
| module_param(tuner_debug, int, 0644); |
| |
| static unsigned int tv_range[2] = { 44, 958 }; |
| static unsigned int radio_range[2] = { 65, 108 }; |
| |
| module_param_array(tv_range, int, NULL, 0644); |
| module_param_array(radio_range, int, NULL, 0644); |
| |
| MODULE_DESCRIPTION("device driver for various TV and TV+FM radio tuners"); |
| MODULE_AUTHOR("Ralph Metzler, Gerd Knorr, Gunther Mayer"); |
| MODULE_LICENSE("GPL"); |
| |
| static struct i2c_driver driver; |
| static struct i2c_client client_template; |
| |
| /* ---------------------------------------------------------------------- */ |
| |
| /* Set tuner frequency, freq in Units of 62.5kHz = 1/16MHz */ |
| static void set_tv_freq(struct i2c_client *c, unsigned int freq) |
| { |
| struct tuner *t = i2c_get_clientdata(c); |
| |
| if (t->type == UNSET) { |
| tuner_warn ("tuner type not set\n"); |
| return; |
| } |
| if (NULL == t->tv_freq) { |
| tuner_warn ("Tuner has no way to set tv freq\n"); |
| return; |
| } |
| if (freq < tv_range[0] * 16 || freq > tv_range[1] * 16) { |
| tuner_dbg ("TV freq (%d.%02d) out of range (%d-%d)\n", |
| freq / 16, freq % 16 * 100 / 16, tv_range[0], |
| tv_range[1]); |
| } |
| t->tv_freq(c, freq); |
| } |
| |
| static void set_radio_freq(struct i2c_client *c, unsigned int freq) |
| { |
| struct tuner *t = i2c_get_clientdata(c); |
| |
| if (t->type == UNSET) { |
| tuner_warn ("tuner type not set\n"); |
| return; |
| } |
| if (NULL == t->radio_freq) { |
| tuner_warn ("tuner has no way to set radio frequency\n"); |
| return; |
| } |
| if (freq <= radio_range[0] * 16000 || freq >= radio_range[1] * 16000) { |
| tuner_dbg ("radio freq (%d.%02d) out of range (%d-%d)\n", |
| freq / 16000, freq % 16000 * 100 / 16000, |
| radio_range[0], radio_range[1]); |
| } |
| |
| t->radio_freq(c, freq); |
| return; |
| } |
| |
| static void set_freq(struct i2c_client *c, unsigned long freq) |
| { |
| struct tuner *t = i2c_get_clientdata(c); |
| |
| switch (t->mode) { |
| case V4L2_TUNER_RADIO: |
| tuner_dbg("radio freq set to %lu.%02lu\n", |
| freq / 16000, freq % 16000 * 100 / 16000); |
| set_radio_freq(c, freq); |
| break; |
| case V4L2_TUNER_ANALOG_TV: |
| case V4L2_TUNER_DIGITAL_TV: |
| tuner_dbg("tv freq set to %lu.%02lu\n", |
| freq / 16, freq % 16 * 100 / 16); |
| set_tv_freq(c, freq); |
| break; |
| } |
| t->freq = freq; |
| } |
| |
| static void set_type(struct i2c_client *c, unsigned int type, |
| unsigned int new_mode_mask) |
| { |
| struct tuner *t = i2c_get_clientdata(c); |
| unsigned char buffer[4]; |
| |
| if (type == UNSET || type == TUNER_ABSENT) { |
| tuner_dbg ("tuner 0x%02x: Tuner type absent\n",c->addr); |
| return; |
| } |
| |
| if (type >= tuner_count) { |
| tuner_warn ("tuner 0x%02x: Tuner count greater than %d\n",c->addr,tuner_count); |
| return; |
| } |
| |
| /* This code detects calls by card attach_inform */ |
| if (NULL == t->i2c.dev.driver) { |
| tuner_dbg ("tuner 0x%02x: called during i2c_client register by adapter's attach_inform\n", c->addr); |
| |
| t->type=type; |
| return; |
| } |
| |
| t->type = type; |
| |
| switch (t->type) { |
| case TUNER_MT2032: |
| microtune_init(c); |
| break; |
| case TUNER_PHILIPS_TDA8290: |
| tda8290_init(c); |
| break; |
| case TUNER_TEA5767: |
| if (tea5767_tuner_init(c) == EINVAL) { |
| t->type = TUNER_ABSENT; |
| t->mode_mask = T_UNINITIALIZED; |
| return; |
| } |
| t->mode_mask = T_RADIO; |
| break; |
| case TUNER_PHILIPS_FMD1216ME_MK3: |
| buffer[0] = 0x0b; |
| buffer[1] = 0xdc; |
| buffer[2] = 0x9c; |
| buffer[3] = 0x60; |
| i2c_master_send(c, buffer, 4); |
| mdelay(1); |
| buffer[2] = 0x86; |
| buffer[3] = 0x54; |
| i2c_master_send(c, buffer, 4); |
| default_tuner_init(c); |
| break; |
| case TUNER_LG_TDVS_H062F: |
| /* Set the Auxiliary Byte. */ |
| buffer[2] &= ~0x20; |
| buffer[2] |= 0x18; |
| buffer[3] = 0x20; |
| i2c_master_send(c, buffer, 4); |
| default_tuner_init(c); |
| break; |
| case TUNER_PHILIPS_TD1316: |
| buffer[0] = 0x0b; |
| buffer[1] = 0xdc; |
| buffer[2] = 0x86; |
| buffer[3] = 0xa4; |
| i2c_master_send(c,buffer,4); |
| default_tuner_init(c); |
| default: |
| default_tuner_init(c); |
| break; |
| } |
| |
| if (t->mode_mask == T_UNINITIALIZED) |
| t->mode_mask = new_mode_mask; |
| |
| set_freq(c, t->freq); |
| tuner_dbg("%s %s I2C addr 0x%02x with type %d used for 0x%02x\n", |
| c->adapter->name, c->driver->name, c->addr << 1, type, |
| t->mode_mask); |
| } |
| |
| /* |
| * This function apply tuner config to tuner specified |
| * by tun_setup structure. I addr is unset, then admin status |
| * and tun addr status is more precise then current status, |
| * it's applied. Otherwise status and type are applied only to |
| * tuner with exactly the same addr. |
| */ |
| |
| static void set_addr(struct i2c_client *c, struct tuner_setup *tun_setup) |
| { |
| struct tuner *t = i2c_get_clientdata(c); |
| |
| if ( t->type == UNSET && ((tun_setup->addr == ADDR_UNSET && |
| (t->mode_mask & tun_setup->mode_mask)) || |
| tun_setup->addr == c->addr)) { |
| set_type(c, tun_setup->type, tun_setup->mode_mask); |
| } |
| } |
| |
| static inline int check_mode(struct tuner *t, char *cmd) |
| { |
| if ((1 << t->mode & t->mode_mask) == 0) { |
| return EINVAL; |
| } |
| |
| switch (t->mode) { |
| case V4L2_TUNER_RADIO: |
| tuner_dbg("Cmd %s accepted for radio\n", cmd); |
| break; |
| case V4L2_TUNER_ANALOG_TV: |
| tuner_dbg("Cmd %s accepted for analog TV\n", cmd); |
| break; |
| case V4L2_TUNER_DIGITAL_TV: |
| tuner_dbg("Cmd %s accepted for digital TV\n", cmd); |
| break; |
| } |
| return 0; |
| } |
| |
| static char pal[] = "-"; |
| module_param_string(pal, pal, sizeof(pal), 0644); |
| static char secam[] = "-"; |
| module_param_string(secam, secam, sizeof(secam), 0644); |
| |
| /* get more precise norm info from insmod option */ |
| static int tuner_fixup_std(struct tuner *t) |
| { |
| if ((t->std & V4L2_STD_PAL) == V4L2_STD_PAL) { |
| switch (pal[0]) { |
| case 'b': |
| case 'B': |
| case 'g': |
| case 'G': |
| tuner_dbg ("insmod fixup: PAL => PAL-BG\n"); |
| t->std = V4L2_STD_PAL_BG; |
| break; |
| case 'i': |
| case 'I': |
| tuner_dbg ("insmod fixup: PAL => PAL-I\n"); |
| t->std = V4L2_STD_PAL_I; |
| break; |
| case 'd': |
| case 'D': |
| case 'k': |
| case 'K': |
| tuner_dbg ("insmod fixup: PAL => PAL-DK\n"); |
| t->std = V4L2_STD_PAL_DK; |
| break; |
| case 'M': |
| case 'm': |
| tuner_dbg ("insmod fixup: PAL => PAL-M\n"); |
| t->std = V4L2_STD_PAL_M; |
| break; |
| case 'N': |
| case 'n': |
| tuner_dbg ("insmod fixup: PAL => PAL-N\n"); |
| t->std = V4L2_STD_PAL_N; |
| break; |
| case '-': |
| /* default parameter, do nothing */ |
| break; |
| default: |
| tuner_warn ("pal= argument not recognised\n"); |
| break; |
| } |
| } |
| if ((t->std & V4L2_STD_SECAM) == V4L2_STD_SECAM) { |
| switch (secam[0]) { |
| case 'd': |
| case 'D': |
| case 'k': |
| case 'K': |
| tuner_dbg ("insmod fixup: SECAM => SECAM-DK\n"); |
| t->std = V4L2_STD_SECAM_DK; |
| break; |
| case 'l': |
| case 'L': |
| tuner_dbg ("insmod fixup: SECAM => SECAM-L\n"); |
| t->std = V4L2_STD_SECAM_L; |
| break; |
| case '-': |
| /* default parameter, do nothing */ |
| break; |
| default: |
| tuner_warn ("secam= argument not recognised\n"); |
| break; |
| } |
| } |
| |
| return 0; |
| } |
| |
| /* ---------------------------------------------------------------------- */ |
| |
| /* static var Used only in tuner_attach and tuner_probe */ |
| static unsigned default_mode_mask; |
| |
| /* During client attach, set_type is called by adapter's attach_inform callback. |
| set_type must then be completed by tuner_attach. |
| */ |
| static int tuner_attach(struct i2c_adapter *adap, int addr, int kind) |
| { |
| struct tuner *t; |
| |
| client_template.adapter = adap; |
| client_template.addr = addr; |
| |
| t = kmalloc(sizeof(struct tuner), GFP_KERNEL); |
| if (NULL == t) |
| return -ENOMEM; |
| memset(t, 0, sizeof(struct tuner)); |
| memcpy(&t->i2c, &client_template, sizeof(struct i2c_client)); |
| i2c_set_clientdata(&t->i2c, t); |
| t->type = UNSET; |
| t->radio_if2 = 10700 * 1000; /* 10.7MHz - FM radio */ |
| t->audmode = V4L2_TUNER_MODE_STEREO; |
| t->mode_mask = T_UNINITIALIZED; |
| |
| if (show_i2c) { |
| unsigned char buffer[16]; |
| int i,rc; |
| |
| memset(buffer, 0, sizeof(buffer)); |
| rc = i2c_master_recv(&t->i2c, buffer, sizeof(buffer)); |
| tuner_info("I2C RECV = "); |
| for (i=0;i<rc;i++) |
| printk("%02x ",buffer[i]); |
| printk("\n"); |
| } |
| /* TEA5767 autodetection code - only for addr = 0xc0 */ |
| if (!no_autodetect) { |
| switch (addr) { |
| case 0x42: |
| case 0x43: |
| case 0x4a: |
| case 0x4b: |
| /* If chip is not tda8290, don't register. |
| since it can be tda9887*/ |
| if (tda8290_probe(&t->i2c) != 0) { |
| tuner_dbg("chip at addr %x is not a tda8290\n", addr); |
| kfree(t); |
| return 0; |
| } |
| break; |
| case 0x60: |
| if (tea5767_autodetection(&t->i2c) != EINVAL) { |
| t->type = TUNER_TEA5767; |
| t->mode_mask = T_RADIO; |
| t->mode = T_STANDBY; |
| t->freq = 87.5 * 16; /* Sets freq to FM range */ |
| default_mode_mask &= ~T_RADIO; |
| |
| goto register_client; |
| } |
| break; |
| } |
| } |
| |
| /* Initializes only the first adapter found */ |
| if (default_mode_mask != T_UNINITIALIZED) { |
| tuner_dbg ("Setting mode_mask to 0x%02x\n", default_mode_mask); |
| t->mode_mask = default_mode_mask; |
| t->freq = 400 * 16; /* Sets freq to VHF High */ |
| default_mode_mask = T_UNINITIALIZED; |
| } |
| |
| /* Should be just before return */ |
| register_client: |
| tuner_info("chip found @ 0x%x (%s)\n", addr << 1, adap->name); |
| i2c_attach_client (&t->i2c); |
| set_type (&t->i2c,t->type, t->mode_mask); |
| return 0; |
| } |
| |
| static int tuner_probe(struct i2c_adapter *adap) |
| { |
| if (0 != addr) { |
| normal_i2c[0] = addr; |
| normal_i2c[1] = I2C_CLIENT_END; |
| } |
| |
| default_mode_mask = T_RADIO | T_ANALOG_TV | T_DIGITAL_TV; |
| |
| if (adap->class & I2C_CLASS_TV_ANALOG) |
| return i2c_probe(adap, &addr_data, tuner_attach); |
| return 0; |
| } |
| |
| static int tuner_detach(struct i2c_client *client) |
| { |
| struct tuner *t = i2c_get_clientdata(client); |
| int err; |
| |
| err = i2c_detach_client(&t->i2c); |
| if (err) { |
| tuner_warn |
| ("Client deregistration failed, client not detached.\n"); |
| return err; |
| } |
| |
| kfree(t); |
| return 0; |
| } |
| |
| /* |
| * Switch tuner to other mode. If tuner support both tv and radio, |
| * set another frequency to some value (This is needed for some pal |
| * tuners to avoid locking). Otherwise, just put second tuner in |
| * standby mode. |
| */ |
| |
| static inline int set_mode(struct i2c_client *client, struct tuner *t, int mode, char *cmd) |
| { |
| if (mode == t->mode) |
| return 0; |
| |
| t->mode = mode; |
| |
| if (check_mode(t, cmd) == EINVAL) { |
| t->mode = T_STANDBY; |
| if (t->standby) |
| t->standby (client); |
| return EINVAL; |
| } |
| return 0; |
| } |
| |
| #define switch_v4l2() if (!t->using_v4l2) \ |
| tuner_dbg("switching to v4l2\n"); \ |
| t->using_v4l2 = 1; |
| |
| static inline int check_v4l2(struct tuner *t) |
| { |
| if (t->using_v4l2) { |
| tuner_dbg ("ignore v4l1 call\n"); |
| return EINVAL; |
| } |
| return 0; |
| } |
| |
| static int tuner_command(struct i2c_client *client, unsigned int cmd, void *arg) |
| { |
| struct tuner *t = i2c_get_clientdata(client); |
| unsigned int *iarg = (int *)arg; |
| |
| switch (cmd) { |
| /* --- configuration --- */ |
| case TUNER_SET_TYPE_ADDR: |
| tuner_dbg ("Calling set_type_addr for type=%d, addr=0x%02x, mode=0x%02x\n", |
| ((struct tuner_setup *)arg)->type, |
| ((struct tuner_setup *)arg)->addr, |
| ((struct tuner_setup *)arg)->mode_mask); |
| |
| set_addr(client, (struct tuner_setup *)arg); |
| break; |
| case AUDC_SET_RADIO: |
| set_mode(client,t,V4L2_TUNER_RADIO, "AUDC_SET_RADIO"); |
| break; |
| case TUNER_SET_STANDBY: |
| { |
| if (check_mode(t, "TUNER_SET_STANDBY") == EINVAL) |
| return 0; |
| if (t->standby) |
| t->standby (client); |
| break; |
| } |
| case AUDC_CONFIG_PINNACLE: |
| switch (*iarg) { |
| case 2: |
| tuner_dbg("pinnacle pal\n"); |
| t->radio_if2 = 33300 * 1000; |
| break; |
| case 3: |
| tuner_dbg("pinnacle ntsc\n"); |
| t->radio_if2 = 41300 * 1000; |
| break; |
| } |
| break; |
| case VIDIOCSAUDIO: |
| if (check_mode(t, "VIDIOCSAUDIO") == EINVAL) |
| return 0; |
| if (check_v4l2(t) == EINVAL) |
| return 0; |
| |
| /* Should be implemented, since bttv calls it */ |
| tuner_dbg("VIDIOCSAUDIO not implemented.\n"); |
| |
| break; |
| case MSP_SET_MATRIX: |
| case TDA9887_SET_CONFIG: |
| break; |
| /* --- v4l ioctls --- */ |
| /* take care: bttv does userspace copying, we'll get a |
| kernel pointer here... */ |
| case VIDIOCSCHAN: |
| { |
| static const v4l2_std_id map[] = { |
| [VIDEO_MODE_PAL] = V4L2_STD_PAL, |
| [VIDEO_MODE_NTSC] = V4L2_STD_NTSC_M, |
| [VIDEO_MODE_SECAM] = V4L2_STD_SECAM, |
| [4 /* bttv */ ] = V4L2_STD_PAL_M, |
| [5 /* bttv */ ] = V4L2_STD_PAL_N, |
| [6 /* bttv */ ] = V4L2_STD_NTSC_M_JP, |
| }; |
| struct video_channel *vc = arg; |
| |
| if (check_v4l2(t) == EINVAL) |
| return 0; |
| |
| if (set_mode(client,t,V4L2_TUNER_ANALOG_TV, "VIDIOCSCHAN")==EINVAL) |
| return 0; |
| |
| if (vc->norm < ARRAY_SIZE(map)) |
| t->std = map[vc->norm]; |
| tuner_fixup_std(t); |
| if (t->freq) |
| set_tv_freq(client, t->freq); |
| return 0; |
| } |
| case VIDIOCSFREQ: |
| { |
| unsigned long *v = arg; |
| |
| if (check_mode(t, "VIDIOCSFREQ") == EINVAL) |
| return 0; |
| if (check_v4l2(t) == EINVAL) |
| return 0; |
| |
| set_freq(client, *v); |
| return 0; |
| } |
| case VIDIOCGTUNER: |
| { |
| struct video_tuner *vt = arg; |
| |
| if (check_mode(t, "VIDIOCGTUNER") == EINVAL) |
| return 0; |
| if (check_v4l2(t) == EINVAL) |
| return 0; |
| |
| if (V4L2_TUNER_RADIO == t->mode) { |
| if (t->has_signal) |
| vt->signal = t->has_signal(client); |
| if (t->is_stereo) { |
| if (t->is_stereo(client)) |
| vt->flags |= |
| VIDEO_TUNER_STEREO_ON; |
| else |
| vt->flags &= |
| ~VIDEO_TUNER_STEREO_ON; |
| } |
| vt->flags |= VIDEO_TUNER_LOW; /* Allow freqs at 62.5 Hz */ |
| |
| vt->rangelow = radio_range[0] * 16000; |
| vt->rangehigh = radio_range[1] * 16000; |
| |
| } else { |
| vt->rangelow = tv_range[0] * 16; |
| vt->rangehigh = tv_range[1] * 16; |
| } |
| |
| return 0; |
| } |
| case VIDIOCGAUDIO: |
| { |
| struct video_audio *va = arg; |
| |
| if (check_mode(t, "VIDIOCGAUDIO") == EINVAL) |
| return 0; |
| if (check_v4l2(t) == EINVAL) |
| return 0; |
| |
| if (V4L2_TUNER_RADIO == t->mode && t->is_stereo) |
| va->mode = t->is_stereo(client) |
| ? VIDEO_SOUND_STEREO : VIDEO_SOUND_MONO; |
| return 0; |
| } |
| |
| case VIDIOC_S_STD: |
| { |
| v4l2_std_id *id = arg; |
| |
| if (set_mode (client, t, V4L2_TUNER_ANALOG_TV, "VIDIOC_S_STD") |
| == EINVAL) |
| return 0; |
| |
| switch_v4l2(); |
| |
| t->std = *id; |
| tuner_fixup_std(t); |
| if (t->freq) |
| set_freq(client, t->freq); |
| break; |
| } |
| case VIDIOC_S_FREQUENCY: |
| { |
| struct v4l2_frequency *f = arg; |
| |
| t->freq = f->frequency; |
| switch_v4l2(); |
| if (V4L2_TUNER_RADIO == f->type && |
| V4L2_TUNER_RADIO != t->mode) { |
| if (set_mode (client, t, f->type, "VIDIOC_S_FREQUENCY") |
| == EINVAL) |
| return 0; |
| } |
| set_freq(client,t->freq); |
| |
| break; |
| } |
| case VIDIOC_G_FREQUENCY: |
| { |
| struct v4l2_frequency *f = arg; |
| |
| if (check_mode(t, "VIDIOC_G_FREQUENCY") == EINVAL) |
| return 0; |
| switch_v4l2(); |
| f->type = t->mode; |
| f->frequency = t->freq; |
| break; |
| } |
| case VIDIOC_G_TUNER: |
| { |
| struct v4l2_tuner *tuner = arg; |
| |
| if (check_mode(t, "VIDIOC_G_TUNER") == EINVAL) |
| return 0; |
| switch_v4l2(); |
| |
| if (V4L2_TUNER_RADIO == t->mode) { |
| |
| if (t->has_signal) |
| tuner->signal = t->has_signal(client); |
| |
| if (t->is_stereo) { |
| if (t->is_stereo(client)) { |
| tuner->rxsubchans = |
| V4L2_TUNER_SUB_STEREO | |
| V4L2_TUNER_SUB_MONO; |
| } else { |
| tuner->rxsubchans = |
| V4L2_TUNER_SUB_MONO; |
| } |
| } |
| |
| tuner->capability |= |
| V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO; |
| |
| tuner->audmode = t->audmode; |
| |
| tuner->rangelow = radio_range[0] * 16000; |
| tuner->rangehigh = radio_range[1] * 16000; |
| } else { |
| tuner->rangelow = tv_range[0] * 16; |
| tuner->rangehigh = tv_range[1] * 16; |
| } |
| break; |
| } |
| case VIDIOC_S_TUNER: |
| { |
| struct v4l2_tuner *tuner = arg; |
| |
| if (check_mode(t, "VIDIOC_S_TUNER") == EINVAL) |
| return 0; |
| |
| switch_v4l2(); |
| |
| if (V4L2_TUNER_RADIO == t->mode) { |
| t->audmode = tuner->audmode; |
| set_radio_freq(client, t->freq); |
| } |
| break; |
| } |
| default: |
| tuner_dbg("Unimplemented IOCTL 0x%08x(dir=%d,tp='%c',nr=%d,sz=%d)\n", |
| cmd, _IOC_DIR(cmd), _IOC_TYPE(cmd), |
| _IOC_NR(cmd), _IOC_SIZE(cmd)); |
| break; |
| } |
| |
| return 0; |
| } |
| |
| static int tuner_suspend(struct device *dev, pm_message_t state) |
| { |
| struct i2c_client *c = container_of (dev, struct i2c_client, dev); |
| struct tuner *t = i2c_get_clientdata (c); |
| |
| tuner_dbg ("suspend\n"); |
| /* FIXME: power down ??? */ |
| return 0; |
| } |
| |
| static int tuner_resume(struct device *dev) |
| { |
| struct i2c_client *c = container_of (dev, struct i2c_client, dev); |
| struct tuner *t = i2c_get_clientdata (c); |
| |
| tuner_dbg ("resume\n"); |
| if (t->freq) |
| set_freq(c, t->freq); |
| return 0; |
| } |
| |
| /* ----------------------------------------------------------------------- */ |
| |
| static struct i2c_driver driver = { |
| .owner = THIS_MODULE, |
| .name = "tuner", |
| .id = I2C_DRIVERID_TUNER, |
| .flags = I2C_DF_NOTIFY, |
| .attach_adapter = tuner_probe, |
| .detach_client = tuner_detach, |
| .command = tuner_command, |
| .driver = { |
| .suspend = tuner_suspend, |
| .resume = tuner_resume, |
| }, |
| }; |
| static struct i2c_client client_template = { |
| .name = "(tuner unset)", |
| .flags = I2C_CLIENT_ALLOW_USE, |
| .driver = &driver, |
| }; |
| |
| static int __init tuner_init_module(void) |
| { |
| return i2c_add_driver(&driver); |
| } |
| |
| static void __exit tuner_cleanup_module(void) |
| { |
| i2c_del_driver(&driver); |
| } |
| |
| module_init(tuner_init_module); |
| module_exit(tuner_cleanup_module); |
| |
| /* |
| * Overrides for Emacs so that we follow Linus's tabbing style. |
| * --------------------------------------------------------------------------- |
| * Local variables: |
| * c-basic-offset: 8 |
| * End: |
| */ |