From patchwork Thu Jul 30 17:08:57 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Peter Griffin X-Patchwork-Id: 30724 Received: from mail.tu-berlin.de ([130.149.7.33]) by www.linuxtv.org with esmtp (Exim 4.72) (envelope-from ) id 1ZKrMt-0000b3-E2; Thu, 30 Jul 2015 19:11:43 +0200 X-tubIT-Incoming-IP: 209.132.180.67 Received: from vger.kernel.org ([209.132.180.67]) by mail.tu-berlin.de (exim-4.76/mailfrontend-8) with esmtp id 1ZKrMq-000673-m9; Thu, 30 Jul 2015 19:11:43 +0200 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755139AbbG3RLK (ORCPT + 1 other); Thu, 30 Jul 2015 13:11:10 -0400 Received: from mail-wi0-f171.google.com ([209.85.212.171]:38647 "EHLO mail-wi0-f171.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754932AbbG3RJV (ORCPT ); Thu, 30 Jul 2015 13:09:21 -0400 Received: by wibxm9 with SMTP id xm9so591585wib.1 for ; Thu, 30 Jul 2015 10:09:20 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=mKC1XOQE7IIJTR6Mcq2jJA210mFsQLnYalt6z+7Z0lA=; b=ezaLMs+4Pw30oZzK3WqBGGr/qQIlj3dEWDAHtWAp1lICSh0RxEr7zmVs1sljx2p4Ro 9LigyfXNwxIpYMkfBZKEMD7GRVM0NyC1V8B5erb2N+Zn3vGAPdcmTmGQinrrA/9hiDyf +7izkZiO7akVYB+q3ZENBZfOAhhzg38H9HWQt65KHw05AnMll2TDZAydbi11koVKJ5IC mcTCqyV3nNacZe/rci4FOa5HNNh/MtAxL2VzCeEoRrlg5NHAhl53u1g2CmNg9KBtSjyU zR0YbbLaZgVaj2OyuGpFtMG3xEnRucoGGBeU2pQbl/B7Yr9OqmDj1bnI4etIbFwjbv6g JDMA== X-Gm-Message-State: ALoCoQkZv4Pup4cB250CXaUXHT/4+2Vyd2PhhV0R12MTR4PN3ErLoW2cfxSQwmR/hsFxBb1Ljb6p X-Received: by 10.194.143.6 with SMTP id sa6mr1810334wjb.67.1438276160523; Thu, 30 Jul 2015 10:09:20 -0700 (PDT) Received: from localhost.localdomain (cpc14-aztw22-2-0-cust189.18-1.cable.virginm.net. [82.45.1.190]) by smtp.gmail.com with ESMTPSA id lm16sm82853wic.18.2015.07.30.10.09.19 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Thu, 30 Jul 2015 10:09:19 -0700 (PDT) From: Peter Griffin To: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, srinivas.kandagatla@gmail.com, maxime.coquelin@st.com, patrice.chotard@st.com, mchehab@osg.samsung.com, m.krufky@samsung.com Cc: peter.griffin@linaro.org, lee.jones@linaro.org, hugues.fruchet@st.com, linux-media@vger.kernel.org, devicetree@vger.kernel.org, joe@perches.com Subject: [PATCH v2 07/11] [media] c8sectpfe: Add LDVB helper functions. Date: Thu, 30 Jul 2015 18:08:57 +0100 Message-Id: <1438276141-16902-8-git-send-email-peter.griffin@linaro.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1438276141-16902-1-git-send-email-peter.griffin@linaro.org> References: <1438276141-16902-1-git-send-email-peter.griffin@linaro.org> Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org X-PMX-Version: 6.0.0.2142326, Antispam-Engine: 2.7.2.2107409, Antispam-Data: 2015.7.30.170315 X-PMX-Spam: Gauge=IIIIIIII, Probability=8%, Report=' MULTIPLE_RCPTS 0.1, HTML_00_01 0.05, HTML_00_10 0.05, NO_URI_HTTPS 0, REFERENCES 0, SINGLE_URI_IN_BODY 0, URI_ENDS_IN_HTML 0, __ANY_URI 0, __CP_URI_IN_BODY 0, __HAS_FROM 0, __HAS_MSGID 0, __HAS_X_MAILER 0, __HAS_X_MAILING_LIST 0, __IN_REP_TO 0, __MIME_TEXT_ONLY 0, __MULTIPLE_RCPTS_CC_X2 0, __MULTIPLE_RCPTS_TO_X5 0, __REFERENCES 0, __SANE_MSGID 0, __TO_MALFORMED_2 0, __TO_NO_NAME 0, __URI_IN_BODY 0, __URI_NO_WWW 0, __URI_NS , __YOUTUBE_RCVD 0' These functions are used by the core code for creating the LDVB devices and adapter. Addtionally some older SoC's (and potentially newer ones) have different frontend HW which would allow those devices to be easily supported in the future by keeping the code specific to the IP separate from the more generic code. Signed-off-by: Peter Griffin --- .../platform/sti/c8sectpfe/c8sectpfe-common.c | 265 +++++++++++++++++++++ .../platform/sti/c8sectpfe/c8sectpfe-common.h | 64 +++++ 2 files changed, 329 insertions(+) create mode 100644 drivers/media/platform/sti/c8sectpfe/c8sectpfe-common.c create mode 100644 drivers/media/platform/sti/c8sectpfe/c8sectpfe-common.h diff --git a/drivers/media/platform/sti/c8sectpfe/c8sectpfe-common.c b/drivers/media/platform/sti/c8sectpfe/c8sectpfe-common.c new file mode 100644 index 0000000..95223ab --- /dev/null +++ b/drivers/media/platform/sti/c8sectpfe/c8sectpfe-common.c @@ -0,0 +1,265 @@ +/* + * c8sectpfe-common.c - C8SECTPFE STi DVB driver + * + * Copyright (c) STMicroelectronics 2015 + * + * Author: Peter Griffin + * + * 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. + */ +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "dmxdev.h" +#include "dvbdev.h" +#include "dvb_demux.h" +#include "dvb_frontend.h" +#include "dvb_net.h" + +#include "c8sectpfe-common.h" +#include "c8sectpfe-core.h" +#include "c8sectpfe-dvb.h" + +static int register_dvb(struct stdemux *demux, struct dvb_adapter *adap, + void *start_feed, void *stop_feed, + struct c8sectpfei *fei) +{ + int result; + + demux->dvb_demux.dmx.capabilities = DMX_TS_FILTERING | + DMX_SECTION_FILTERING | + DMX_MEMORY_BASED_FILTERING; + + demux->dvb_demux.priv = demux; + demux->dvb_demux.filternum = C8SECTPFE_MAXCHANNEL; + demux->dvb_demux.feednum = C8SECTPFE_MAXCHANNEL; + + demux->dvb_demux.start_feed = start_feed; + demux->dvb_demux.stop_feed = stop_feed; + demux->dvb_demux.write_to_decoder = NULL; + + result = dvb_dmx_init(&demux->dvb_demux); + if (result < 0) { + dev_err(fei->dev, "dvb_dmx_init failed (errno = %d)\n", + result); + goto err_dmx; + } + + demux->dmxdev.filternum = demux->dvb_demux.filternum; + demux->dmxdev.demux = &demux->dvb_demux.dmx; + demux->dmxdev.capabilities = 0; + + result = dvb_dmxdev_init(&demux->dmxdev, adap); + if (result < 0) { + dev_err(fei->dev, "dvb_dmxdev_init failed (errno = %d)\n", + result); + + goto err_dmxdev; + } + + demux->hw_frontend.source = DMX_FRONTEND_0 + demux->tsin_index; + + result = demux->dvb_demux.dmx.add_frontend(&demux->dvb_demux.dmx, + &demux->hw_frontend); + if (result < 0) { + dev_err(fei->dev, "add_frontend failed (errno = %d)\n", result); + goto err_fe_hw; + } + + demux->mem_frontend.source = DMX_MEMORY_FE; + result = demux->dvb_demux.dmx.add_frontend(&demux->dvb_demux.dmx, + &demux->mem_frontend); + if (result < 0) { + dev_err(fei->dev, "add_frontend failed (%d)\n", result); + goto err_fe_mem; + } + + result = demux->dvb_demux.dmx.connect_frontend(&demux->dvb_demux.dmx, + &demux->hw_frontend); + if (result < 0) { + dev_err(fei->dev, "connect_frontend (%d)\n", result); + goto err_fe_con; + } + + return 0; + +err_fe_con: + demux->dvb_demux.dmx.remove_frontend(&demux->dvb_demux.dmx, + &demux->mem_frontend); +err_fe_mem: + demux->dvb_demux.dmx.remove_frontend(&demux->dvb_demux.dmx, + &demux->hw_frontend); +err_fe_hw: + dvb_dmxdev_release(&demux->dmxdev); +err_dmxdev: + dvb_dmx_release(&demux->dvb_demux); +err_dmx: + return result; + +} + +static void unregister_dvb(struct stdemux *demux) +{ + + demux->dvb_demux.dmx.remove_frontend(&demux->dvb_demux.dmx, + &demux->mem_frontend); + + demux->dvb_demux.dmx.remove_frontend(&demux->dvb_demux.dmx, + &demux->hw_frontend); + + dvb_dmxdev_release(&demux->dmxdev); + + dvb_dmx_release(&demux->dvb_demux); +} + +static struct c8sectpfe *c8sectpfe_create(struct c8sectpfei *fei, + void *start_feed, + void *stop_feed) +{ + struct c8sectpfe *c8sectpfe; + int result; + int i, j; + + short int ids[] = { -1 }; + + c8sectpfe = kzalloc(sizeof(struct c8sectpfe), GFP_KERNEL); + if (!c8sectpfe) + goto err1; + + mutex_init(&c8sectpfe->lock); + + c8sectpfe->device = fei->dev; + + result = dvb_register_adapter(&c8sectpfe->adapter, "STi c8sectpfe", + THIS_MODULE, fei->dev, ids); + if (result < 0) { + dev_err(fei->dev, "dvb_register_adapter failed (errno = %d)\n", + result); + goto err2; + } + + c8sectpfe->adapter.priv = fei; + + for (i = 0; i < fei->tsin_count; i++) { + + c8sectpfe->demux[i].tsin_index = i; + c8sectpfe->demux[i].c8sectpfei = fei; + + result = register_dvb(&c8sectpfe->demux[i], &c8sectpfe->adapter, + start_feed, stop_feed, fei); + if (result < 0) { + dev_err(fei->dev, + "register_dvb feed=%d failed (errno = %d)\n", + result, i); + + /* we take a all or nothing approach */ + for (j = 0; j < i; j++) + unregister_dvb(&c8sectpfe->demux[j]); + goto err3; + } + } + + c8sectpfe->num_feeds = fei->tsin_count; + + return c8sectpfe; +err3: + dvb_unregister_adapter(&c8sectpfe->adapter); +err2: + kfree(c8sectpfe); +err1: + return NULL; +}; + +static void c8sectpfe_delete(struct c8sectpfe *c8sectpfe) +{ + int i; + + if (!c8sectpfe) + return; + + for (i = 0; i < c8sectpfe->num_feeds; i++) + unregister_dvb(&c8sectpfe->demux[i]); + + dvb_unregister_adapter(&c8sectpfe->adapter); + + kfree(c8sectpfe); +}; + +void c8sectpfe_tuner_unregister_frontend(struct c8sectpfe *c8sectpfe, + struct c8sectpfei *fei) +{ + int n; + struct channel_info *tsin; + + for (n = 0; n < fei->tsin_count; n++) { + + tsin = fei->channel_data[n]; + + if (tsin && tsin->frontend) { + dvb_unregister_frontend(tsin->frontend); + dvb_frontend_detach(tsin->frontend); + } + + if (tsin && tsin->i2c_adapter) + i2c_put_adapter(tsin->i2c_adapter); + + if (tsin && tsin->i2c_client) { + if (tsin->i2c_client->dev.driver->owner) + module_put(tsin->i2c_client->dev.driver->owner); + i2c_unregister_device(tsin->i2c_client); + } + } + + c8sectpfe_delete(c8sectpfe); +}; + +int c8sectpfe_tuner_register_frontend(struct c8sectpfe **c8sectpfe, + struct c8sectpfei *fei, + void *start_feed, + void *stop_feed) +{ + struct channel_info *tsin; + struct dvb_frontend *frontend; + int n, res; + + *c8sectpfe = c8sectpfe_create(fei, start_feed, stop_feed); + if (!*c8sectpfe) + return -ENOMEM; + + for (n = 0; n < fei->tsin_count; n++) { + tsin = fei->channel_data[n]; + + res = c8sectpfe_frontend_attach(&frontend, *c8sectpfe, tsin, n); + if (res) + goto err; + + res = dvb_register_frontend(&c8sectpfe[0]->adapter, frontend); + if (res < 0) { + dev_err(fei->dev, "dvb_register_frontend failed (%d)\n", + res); + goto err; + } + + tsin->frontend = frontend; + } + + return 0; + +err: + c8sectpfe_tuner_unregister_frontend(*c8sectpfe, fei); + return res; +} diff --git a/drivers/media/platform/sti/c8sectpfe/c8sectpfe-common.h b/drivers/media/platform/sti/c8sectpfe/c8sectpfe-common.h new file mode 100644 index 0000000..da21c0a --- /dev/null +++ b/drivers/media/platform/sti/c8sectpfe/c8sectpfe-common.h @@ -0,0 +1,64 @@ +/* + * c8sectpfe-common.h - C8SECTPFE STi DVB driver + * + * Copyright (c) STMicroelectronics 2015 + * + * Author: Peter Griffin + * + * 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. + */ +#ifndef _C8SECTPFE_COMMON_H_ +#define _C8SECTPFE_COMMON_H_ + +#include +#include +#include +#include + +#include "dmxdev.h" +#include "dvb_demux.h" +#include "dvb_frontend.h" +#include "dvb_net.h" + +/* Maximum number of channels */ +#define C8SECTPFE_MAXADAPTER (4) +#define C8SECTPFE_MAXCHANNEL 64 +#define STPTI_MAXCHANNEL 64 + +#define MAX_INPUTBLOCKS 7 + +struct c8sectpfe; +struct stdemux; + +struct stdemux { + struct dvb_demux dvb_demux; + struct dmxdev dmxdev; + struct dmx_frontend hw_frontend; + struct dmx_frontend mem_frontend; + int tsin_index; + int running_feed_count; + struct c8sectpfei *c8sectpfei; +}; + +struct c8sectpfe { + struct stdemux demux[MAX_INPUTBLOCKS]; + struct mutex lock; + struct dvb_adapter adapter; + struct device *device; + int mapping; + int num_feeds; +}; + +/* Channel registration */ +int c8sectpfe_tuner_register_frontend(struct c8sectpfe **c8sectpfe, + struct c8sectpfei *fei, + void *start_feed, + void *stop_feed); + +void c8sectpfe_tuner_unregister_frontend(struct c8sectpfe *c8sectpfe, + struct c8sectpfei *fei); + +#endif