From patchwork Mon Feb 14 21:03:16 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mauro Carvalho Chehab X-Patchwork-Id: 556971 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by demeter1.kernel.org (8.14.4/8.14.3) with ESMTP id p1EL8dKj018263 for ; Mon, 14 Feb 2011 21:08:40 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752381Ab1BNVIi (ORCPT ); Mon, 14 Feb 2011 16:08:38 -0500 Received: from mx1.redhat.com ([209.132.183.28]:52998 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750893Ab1BNVIh (ORCPT ); Mon, 14 Feb 2011 16:08:37 -0500 Received: from int-mx01.intmail.prod.int.phx2.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id p1EL8b65027838 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK) for ; Mon, 14 Feb 2011 16:08:37 -0500 Received: from pedra (vpn-239-121.phx2.redhat.com [10.3.239.121]) by int-mx01.intmail.prod.int.phx2.redhat.com (8.13.8/8.13.8) with ESMTP id p1EL3TG8012908 for ; Mon, 14 Feb 2011 16:08:36 -0500 Date: Mon, 14 Feb 2011 19:03:16 -0200 From: Mauro Carvalho Chehab Cc: Linux Media Mailing List Subject: [PATCH 08/14] [media] tuner-core: Better implement standby mode Message-ID: <20110214190316.6985b67a@pedra> In-Reply-To: References: Mime-Version: 1.0 X-Scanned-By: MIMEDefang 2.67 on 10.5.11.11 To: unlisted-recipients:; (no To-header on input) Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org X-Greylist: IP, sender and recipient auto-whitelisted, not delayed by milter-greylist-4.2.6 (demeter1.kernel.org [140.211.167.41]); Mon, 14 Feb 2011 21:08:40 +0000 (UTC) diff --git a/drivers/media/video/tuner-core.c b/drivers/media/video/tuner-core.c index 7cdfe3a..e6855a4 100644 --- a/drivers/media/video/tuner-core.c +++ b/drivers/media/video/tuner-core.c @@ -115,9 +115,11 @@ struct tuner { unsigned int radio_freq; unsigned int audmode; - unsigned int mode; + enum v4l2_tuner_type mode; unsigned int mode_mask; /* Combination of allowable modes */ + bool standby; /* Standby mode */ + unsigned int type; /* chip type id */ unsigned int config; const char *name; @@ -262,12 +264,6 @@ static void set_type(struct i2c_client *c, unsigned int type, t->fe.callback = tuner_callback; } - if (t->mode == T_UNINITIALIZED) { - tuner_dbg ("tuner 0x%02x: called during i2c_client register by adapter's attach_inform\n", c->addr); - - return; - } - /* discard private data, in case set_type() was previously called */ tuner_detach(&t->fe); t->fe.analog_demod_priv = NULL; @@ -387,8 +383,7 @@ static void set_type(struct i2c_client *c, unsigned int type, tuner_dbg("type set to %s\n", t->name); - if (t->mode_mask == T_UNINITIALIZED) - t->mode_mask = new_mode_mask; + t->mode_mask = new_mode_mask; /* Some tuners require more initialization setup before use, such as firmware download or device calibration. @@ -411,7 +406,6 @@ static void set_type(struct i2c_client *c, unsigned int type, attach_failed: tuner_dbg("Tuner attach for type = %d failed.\n", t->type); t->type = TUNER_ABSENT; - t->mode_mask = T_UNINITIALIZED; return; } @@ -429,10 +423,10 @@ static void set_addr(struct i2c_client *c, struct tuner_setup *tun_setup) struct tuner *t = to_tuner(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, - tun_setup->config, tun_setup->tuner_callback); + (t->mode_mask & tun_setup->mode_mask))) || + (tun_setup->addr == c->addr)) { + set_type(c, tun_setup->type, tun_setup->mode_mask, + tun_setup->config, tun_setup->tuner_callback); } else tuner_dbg("set addr discarded for type %i, mask %x. " "Asked to change tuner at addr 0x%02x, with mask %x\n", @@ -491,7 +485,8 @@ static void tuner_lookup(struct i2c_adapter *adap, strcmp(pos->i2c->driver->driver.name, "tuner")) continue; - mode_mask = pos->mode_mask & ~T_STANDBY; + mode_mask = pos->mode_mask; + pos->standby = 1; if (*radio == NULL && mode_mask == T_RADIO) *radio = pos; /* Note: currently TDA9887 is the only demod-only @@ -521,7 +516,9 @@ static int tuner_probe(struct i2c_client *client, t->name = "(tuner unset)"; t->type = UNSET; t->audmode = V4L2_TUNER_MODE_STEREO; - t->mode_mask = T_UNINITIALIZED; + t->standby = 1; + t->radio_freq = 87.5 * 16000; /* Initial freq range */ + t->tv_freq = 400 * 16; /* Sets freq to VHF High - needed for some PLL's to properly start */ if (show_i2c) { unsigned char buffer[16]; @@ -544,9 +541,6 @@ static int tuner_probe(struct i2c_client *client, t->i2c->addr) >= 0) { t->type = TUNER_TEA5761; t->mode_mask = T_RADIO; - t->mode = T_STANDBY; - /* Sets freq to FM range */ - t->radio_freq = 87.5 * 16000; tuner_lookup(t->i2c->adapter, &radio, &tv); if (tv) tv->mode_mask &= ~T_RADIO; @@ -569,7 +563,6 @@ static int tuner_probe(struct i2c_client *client, t->type = TUNER_TDA9887; t->mode_mask = T_RADIO | T_ANALOG_TV | T_DIGITAL_TV; - t->mode = T_STANDBY; goto register_client; } break; @@ -579,9 +572,7 @@ static int tuner_probe(struct i2c_client *client, >= 0) { t->type = TUNER_TEA5767; t->mode_mask = T_RADIO; - t->mode = T_STANDBY; /* Sets freq to FM range */ - t->radio_freq = 87.5 * 16000; tuner_lookup(t->i2c->adapter, &radio, &tv); if (tv) tv->mode_mask &= ~T_RADIO; @@ -605,15 +596,10 @@ static int tuner_probe(struct i2c_client *client, if (radio == NULL) t->mode_mask |= T_RADIO; tuner_dbg("Setting mode_mask to 0x%02x\n", t->mode_mask); - t->tv_freq = 400 * 16; /* Sets freq to VHF High */ - t->radio_freq = 87.5 * 16000; /* Sets freq to FM range */ } /* Should be just before return */ register_client: - tuner_info("chip found @ 0x%x (%s)\n", client->addr << 1, - client->adapter->name); - /* Sets a default mode */ if (t->mode_mask & T_ANALOG_TV) { t->mode = V4L2_TUNER_ANALOG_TV; @@ -624,6 +610,12 @@ register_client: } set_type(client, t->type, t->mode_mask, t->config, t->fe.callback); list_add_tail(&t->list, &tuner_list); + + tuner_info("Tuner %d found with type(s)%s%s%s.\n", + t->type, + t->mode_mask & T_RADIO ? " radio" : "", + t->mode_mask & T_ANALOG_TV ? " TV" : "", + t->mode_mask & T_ANALOG_TV ? " DTV" : ""); return 0; } @@ -679,6 +671,7 @@ static void set_tv_freq(struct i2c_client *c, unsigned int freq) tuner_dbg("tv freq set to %d.%02d\n", freq / 16, freq % 16 * 100 / 16); t->tv_freq = freq; + t->standby = false; analog_ops->set_params(&t->fe, ¶ms); } @@ -837,13 +830,14 @@ static void set_radio_freq(struct i2c_client *c, unsigned int freq) tuner_dbg("radio freq set to %d.%02d\n", freq / 16000, freq % 16000 * 100 / 16000); t->radio_freq = freq; + t->standby = false; analog_ops->set_params(&t->fe, ¶ms); } /** * check_mode - Verify if tuner supports the requested mode - * @t - a pointer to the module's internal struct_tuner + * @t: a pointer to the module's internal struct_tuner * * This function checks if the tuner is capable of tuning analog TV, * digital TV or radio, depending on what the caller wants. If the @@ -852,51 +846,51 @@ static void set_radio_freq(struct i2c_client *c, unsigned int freq) * This function is needed for boards that have a separate tuner for * radio (like devices with tea5767). */ -static inline int check_mode(struct tuner *t) +static inline int check_mode(struct tuner *t, enum v4l2_tuner_type mode) { - if ((1 << t->mode & t->mode_mask) == 0) { + if ((1 << mode & t->mode_mask) == 0) { return -EINVAL; } return 0; } /** - * set_mode - Switch tuner to other mode. - * @client - struct i2c_client pointer - * @t - a pointer to the module's internal struct_tuner - * @mode - enum v4l2_type + T_STANDBY mode - * @cmd - string for the command to be executed (for debug messages) + * set_mode_freq - Switch tuner to other mode. + * @client: struct i2c_client pointer + * @t: a pointer to the module's internal struct_tuner + * @mode: enum v4l2_type (radio or TV) + * @freq: frequency to set (0 means to use the previous one) * * If tuner doesn't support the needed mode (radio or TV), prints a * debug message and returns -EINVAL, changing internal state to T_STANDBY. * Otherwise, changes the state and sets frequency to the last value, if * the tuner can sleep or if it supports both Radio and TV. */ -static inline int set_mode(struct i2c_client *client, struct tuner *t, - int mode, char *cmd) +static int set_mode_freq(struct i2c_client *client, struct tuner *t, + enum v4l2_tuner_type mode, unsigned int freq) { struct analog_demod_ops *analog_ops = &t->fe.ops.analog_ops; - if (mode == t->mode) - return 0; - - t->mode = mode; - - if (check_mode(t) == -EINVAL) { - tuner_dbg("Tuner doesn't support this mode. " - "Putting tuner to sleep\n"); - t->mode = T_STANDBY; - if (analog_ops->standby) - analog_ops->standby(&t->fe); - return -EINVAL; + if (mode != t->mode) { + if (check_mode(t, mode) == -EINVAL) { + tuner_dbg("Tuner doesn't support mode %d. " + "Putting tuner to sleep\n", mode); + t->standby = true; + if (analog_ops->standby) + analog_ops->standby(&t->fe); + return -EINVAL; + } + t->mode = mode; + tuner_dbg("Changing to mode %d\n", mode); } - if (t->mode == V4L2_TUNER_RADIO) { - if (t->radio_freq) - set_radio_freq(client, t->radio_freq); + if (freq) + t->radio_freq = freq; + set_radio_freq(client, t->radio_freq); } else { - if (t->tv_freq) - set_tv_freq(client, t->tv_freq); + if (freq) + t->tv_freq = freq; + set_tv_freq(client, t->tv_freq); } return 0; @@ -923,6 +917,13 @@ static void set_freq(struct i2c_client *c, unsigned long freq) } } +/** + * tuner_status - Dumps the current tuner status at dmesg + * @fe: pointer to struct dvb_frontend + * + * This callback is used only for driver debug purposes, answering to + * VIDIOC_LOG_STATUS. No changes should happen on this call. + */ static void tuner_status(struct dvb_frontend *fe) { struct tuner *t = fe->analog_demod_priv; @@ -932,10 +933,16 @@ static void tuner_status(struct dvb_frontend *fe) const char *p; switch (t->mode) { - case V4L2_TUNER_RADIO: p = "radio"; break; - case V4L2_TUNER_ANALOG_TV: p = "analog TV"; break; - case V4L2_TUNER_DIGITAL_TV: p = "digital TV"; break; - default: p = "undefined"; break; + case V4L2_TUNER_RADIO: + p = "radio"; + break; + case V4L2_TUNER_DIGITAL_TV: + p = "digital TV"; + break; + case V4L2_TUNER_ANALOG_TV: + default: + p = "analog TV"; + break; } if (t->mode == V4L2_TUNER_RADIO) { freq = t->radio_freq / 16000; @@ -944,7 +951,8 @@ static void tuner_status(struct dvb_frontend *fe) freq = t->tv_freq / 16; freq_fraction = (t->tv_freq % 16) * 100 / 16; } - tuner_info("Tuner mode: %s\n", p); + tuner_info("Tuner mode: %s%s\n", p, + t->standby ? " on standby mode" : ""); tuner_info("Frequency: %lu.%02lu MHz\n", freq, freq_fraction); tuner_info("Standard: 0x%08lx\n", (unsigned long)t->std); if (t->mode != V4L2_TUNER_RADIO) @@ -963,19 +971,22 @@ static void tuner_status(struct dvb_frontend *fe) analog_ops->has_signal(fe)); } +/** + * tuner_s_power - controls the power state of the tuner + * @sd: pointer to struct v4l2_subdev + * @on: a zero value puts the tuner to sleep + */ static int tuner_s_power(struct v4l2_subdev *sd, int on) { struct tuner *t = to_tuner(sd); struct analog_demod_ops *analog_ops = &t->fe.ops.analog_ops; + /* FIXME: Why this function don't wake the tuner if on != 0 ? */ if (on) return 0; tuner_dbg("Putting tuner to sleep\n"); - - if (check_mode(t) == -EINVAL) - return 0; - t->mode = T_STANDBY; + t->standby = true; if (analog_ops->standby) analog_ops->standby(&t->fe); return 0; @@ -983,13 +994,12 @@ static int tuner_s_power(struct v4l2_subdev *sd, int on) /* ---------------------------------------------------------------------- */ - static int tuner_s_radio(struct v4l2_subdev *sd) { struct tuner *t = to_tuner(sd); struct i2c_client *client = v4l2_get_subdevdata(sd); - if (set_mode(client, t, V4L2_TUNER_RADIO, "s_radio") == -EINVAL) + if (set_mode_freq(client, t, V4L2_TUNER_RADIO, 0) == -EINVAL) return 0; return 0; } @@ -1002,13 +1012,12 @@ static int tuner_s_std(struct v4l2_subdev *sd, v4l2_std_id std) struct tuner *t = to_tuner(sd); struct i2c_client *client = v4l2_get_subdevdata(sd); - if (set_mode(client, t, V4L2_TUNER_ANALOG_TV, "s_std") == -EINVAL) + if (set_mode_freq(client, t, V4L2_TUNER_ANALOG_TV, 0) == -EINVAL) return 0; t->std = std; tuner_fixup_std(t); - if (t->tv_freq) - set_freq(client, t->tv_freq); + return 0; } @@ -1017,9 +1026,8 @@ static int tuner_s_frequency(struct v4l2_subdev *sd, struct v4l2_frequency *f) struct tuner *t = to_tuner(sd); struct i2c_client *client = v4l2_get_subdevdata(sd); - if (set_mode(client, t, f->type, "s_frequency") == -EINVAL) + if (set_mode_freq(client, t, f->type, f->frequency) == -EINVAL) return 0; - set_freq(client, f->frequency); return 0; } @@ -1029,20 +1037,20 @@ static int tuner_g_frequency(struct v4l2_subdev *sd, struct v4l2_frequency *f) struct tuner *t = to_tuner(sd); struct dvb_tuner_ops *fe_tuner_ops = &t->fe.ops.tuner_ops; - if (check_mode(t) == -EINVAL) + if (check_mode(t, f->type) == -EINVAL) return 0; f->type = t->mode; - if (fe_tuner_ops->get_frequency) { + if (fe_tuner_ops->get_frequency && !t->standby) { u32 abs_freq; fe_tuner_ops->get_frequency(&t->fe, &abs_freq); f->frequency = (V4L2_TUNER_RADIO == t->mode) ? DIV_ROUND_CLOSEST(abs_freq * 2, 125) : DIV_ROUND_CLOSEST(abs_freq, 62500); - return 0; + } else { + f->frequency = (V4L2_TUNER_RADIO == t->mode) ? + t->radio_freq : t->tv_freq; } - f->frequency = (V4L2_TUNER_RADIO == t->mode) ? - t->radio_freq : t->tv_freq; return 0; } @@ -1052,9 +1060,8 @@ static int tuner_g_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *vt) struct analog_demod_ops *analog_ops = &t->fe.ops.analog_ops; struct dvb_tuner_ops *fe_tuner_ops = &t->fe.ops.tuner_ops; - if (check_mode(t) == -EINVAL) + if (check_mode(t, vt->type) == -EINVAL) return 0; - vt->type = t->mode; if (analog_ops->get_afc) vt->afc = analog_ops->get_afc(&t->fe); @@ -1067,8 +1074,7 @@ static int tuner_g_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *vt) } /* radio mode */ - vt->rxsubchans = - V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO; + vt->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO; if (fe_tuner_ops->get_status) { u32 tuner_status; @@ -1080,11 +1086,11 @@ static int tuner_g_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *vt) } if (analog_ops->has_signal) vt->signal = analog_ops->has_signal(&t->fe); - vt->capability |= - V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO; + vt->capability |= V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO; vt->audmode = t->audmode; vt->rangelow = radio_range[0] * 16000; vt->rangehigh = radio_range[1] * 16000; + return 0; } @@ -1093,14 +1099,12 @@ static int tuner_s_tuner(struct v4l2_subdev *sd, struct v4l2_tuner *vt) struct tuner *t = to_tuner(sd); struct i2c_client *client = v4l2_get_subdevdata(sd); - if (check_mode(t) == -EINVAL) + if (set_mode_freq(client, t, vt->type, 0) == -EINVAL) return 0; - /* do nothing unless we're a radio tuner */ - if (t->mode != V4L2_TUNER_RADIO) - return 0; - t->audmode = vt->audmode; - set_radio_freq(client, t->radio_freq); + if (t->mode == V4L2_TUNER_RADIO) + t->audmode = vt->audmode; + return 0; } @@ -1128,13 +1132,10 @@ static int tuner_resume(struct i2c_client *c) struct tuner *t = to_tuner(i2c_get_clientdata(c)); tuner_dbg("resume\n"); - if (V4L2_TUNER_RADIO == t->mode) { - if (t->radio_freq) - set_freq(c, t->radio_freq); - } else { - if (t->tv_freq) - set_freq(c, t->tv_freq); - } + if (V4L2_TUNER_RADIO == t->mode) + set_freq(c, t->radio_freq); + else + set_freq(c, t->tv_freq); return 0; } diff --git a/include/media/tuner.h b/include/media/tuner.h index 5eec529..1d59642 100644 --- a/include/media/tuner.h +++ b/include/media/tuner.h @@ -160,7 +160,6 @@ #ifdef __KERNEL__ enum tuner_mode { - T_UNINITIALIZED = 0, T_RADIO = 1 << V4L2_TUNER_RADIO, T_ANALOG_TV = 1 << V4L2_TUNER_ANALOG_TV, T_DIGITAL_TV = 1 << V4L2_TUNER_DIGITAL_TV,