From patchwork Thu Mar 26 15:21:28 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mauro Carvalho Chehab X-Patchwork-Id: 210424 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-10.1 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7FB5BC2D0F0 for ; Thu, 26 Mar 2020 15:21:39 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 4F8B420748 for ; Thu, 26 Mar 2020 15:21:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1585236099; bh=4l2aNeUZ0aVli1lUKW+ZvSWp0TGxK0qoDGbXSzj19VY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=WdRz4KnQQ8JLkQ6DJ74bWaq32rkimsWgTTSJ1nOIwgs/QwEAFiUfdedJinohuFl0M tQC3inslk3YufFu7vn9AfPplzbD7pBzHAlkRPQPB7w2gTbzm8qsVfrqBqLbBub9fNk VyQ7V6OM/8PUAJi7ieLgaOQJC1pIExAPe8P3mPJk= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727874AbgCZPVh (ORCPT ); Thu, 26 Mar 2020 11:21:37 -0400 Received: from mail.kernel.org ([198.145.29.99]:40512 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727707AbgCZPVg (ORCPT ); Thu, 26 Mar 2020 11:21:36 -0400 Received: from mail.kernel.org (ip5f5ad4d8.dynamic.kabel-deutschland.de [95.90.212.216]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 7646120775; Thu, 26 Mar 2020 15:21:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1585236095; bh=4l2aNeUZ0aVli1lUKW+ZvSWp0TGxK0qoDGbXSzj19VY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=s1FbgIl7g8qQu+AXl8AYMYEWwWw6UAKfMkTW3zqoq+0RzxFm+VMT8Hkk5XasLORTE akwAC2ezLYPiE7OOpSnLp2b+0synlnhd6d1MDVgVGKSoaekXWKSfdSEMS4Ln8tFhxk tGLulNhrDG7nn9C9mdqGeTLputOJCQMXy+xpN4RQ= Received: from mchehab by mail.kernel.org with local (Exim 4.92.3) (envelope-from ) id 1jHUK5-003dim-Nw; Thu, 26 Mar 2020 16:21:33 +0100 From: Mauro Carvalho Chehab To: Linux Media Mailing List Cc: Mauro Carvalho Chehab Subject: [PATCH 3/7] media: ddbridge: copy the dvb_dummy_fe driver to ddbridge Date: Thu, 26 Mar 2020 16:21:28 +0100 Message-Id: <07a7d744b00f0b961bebf0f5d48f496bb525d41d.1585235736.git.mchehab+huawei@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: References: MIME-Version: 1.0 Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org As we'll be transforming the dvb-dummy-fe driver soon into a virtual driver, let's first copy the existing one to ddbridge as-is, as it is needed there. Signed-off-by: Mauro Carvalho Chehab --- .../media/pci/ddbridge/ddbridge-dummy-fe.c | 286 ++++++++++++++++++ .../media/pci/ddbridge/ddbridge-dummy-fe.h | 36 +++ 2 files changed, 322 insertions(+) create mode 100644 drivers/media/pci/ddbridge/ddbridge-dummy-fe.c create mode 100644 drivers/media/pci/ddbridge/ddbridge-dummy-fe.h diff --git a/drivers/media/pci/ddbridge/ddbridge-dummy-fe.c b/drivers/media/pci/ddbridge/ddbridge-dummy-fe.c new file mode 100644 index 000000000000..9ff1ebaa5e04 --- /dev/null +++ b/drivers/media/pci/ddbridge/ddbridge-dummy-fe.c @@ -0,0 +1,286 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Driver for Dummy Frontend + * + * Written by Emard + */ + +#include +#include +#include +#include + +#include +#include "dvb_dummy_fe.h" + + +struct dvb_dummy_fe_state { + struct dvb_frontend frontend; +}; + + +static int dvb_dummy_fe_read_status(struct dvb_frontend *fe, + enum fe_status *status) +{ + *status = FE_HAS_SIGNAL + | FE_HAS_CARRIER + | FE_HAS_VITERBI + | FE_HAS_SYNC + | FE_HAS_LOCK; + + return 0; +} + +static int dvb_dummy_fe_read_ber(struct dvb_frontend *fe, u32 *ber) +{ + *ber = 0; + return 0; +} + +static int dvb_dummy_fe_read_signal_strength(struct dvb_frontend *fe, + u16 *strength) +{ + *strength = 0; + return 0; +} + +static int dvb_dummy_fe_read_snr(struct dvb_frontend *fe, u16 *snr) +{ + *snr = 0; + return 0; +} + +static int dvb_dummy_fe_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks) +{ + *ucblocks = 0; + return 0; +} + +/* + * Should only be implemented if it actually reads something from the hardware. + * Also, it should check for the locks, in order to avoid report wrong data + * to userspace. + */ +static int dvb_dummy_fe_get_frontend(struct dvb_frontend *fe, + struct dtv_frontend_properties *p) +{ + return 0; +} + +static int dvb_dummy_fe_set_frontend(struct dvb_frontend *fe) +{ + if (fe->ops.tuner_ops.set_params) { + fe->ops.tuner_ops.set_params(fe); + if (fe->ops.i2c_gate_ctrl) + fe->ops.i2c_gate_ctrl(fe, 0); + } + + return 0; +} + +static int dvb_dummy_fe_sleep(struct dvb_frontend *fe) +{ + return 0; +} + +static int dvb_dummy_fe_init(struct dvb_frontend *fe) +{ + return 0; +} + +static int dvb_dummy_fe_set_tone(struct dvb_frontend *fe, + enum fe_sec_tone_mode tone) +{ + return 0; +} + +static int dvb_dummy_fe_set_voltage(struct dvb_frontend *fe, + enum fe_sec_voltage voltage) +{ + return 0; +} + +static void dvb_dummy_fe_release(struct dvb_frontend *fe) +{ + struct dvb_dummy_fe_state *state = fe->demodulator_priv; + + kfree(state); +} + +static const struct dvb_frontend_ops dvb_dummy_fe_ofdm_ops; + +struct dvb_frontend *dvb_dummy_fe_ofdm_attach(void) +{ + struct dvb_dummy_fe_state *state = NULL; + + /* allocate memory for the internal state */ + state = kzalloc(sizeof(struct dvb_dummy_fe_state), GFP_KERNEL); + if (!state) + return NULL; + + /* create dvb_frontend */ + memcpy(&state->frontend.ops, + &dvb_dummy_fe_ofdm_ops, + sizeof(struct dvb_frontend_ops)); + + state->frontend.demodulator_priv = state; + return &state->frontend; +} +EXPORT_SYMBOL(dvb_dummy_fe_ofdm_attach); + +static const struct dvb_frontend_ops dvb_dummy_fe_qpsk_ops; + +struct dvb_frontend *dvb_dummy_fe_qpsk_attach(void) +{ + struct dvb_dummy_fe_state *state = NULL; + + /* allocate memory for the internal state */ + state = kzalloc(sizeof(struct dvb_dummy_fe_state), GFP_KERNEL); + if (!state) + return NULL; + + /* create dvb_frontend */ + memcpy(&state->frontend.ops, + &dvb_dummy_fe_qpsk_ops, + sizeof(struct dvb_frontend_ops)); + + state->frontend.demodulator_priv = state; + return &state->frontend; +} +EXPORT_SYMBOL(dvb_dummy_fe_qpsk_attach); + +static const struct dvb_frontend_ops dvb_dummy_fe_qam_ops; + +struct dvb_frontend *dvb_dummy_fe_qam_attach(void) +{ + struct dvb_dummy_fe_state *state = NULL; + + /* allocate memory for the internal state */ + state = kzalloc(sizeof(struct dvb_dummy_fe_state), GFP_KERNEL); + if (!state) + return NULL; + + /* create dvb_frontend */ + memcpy(&state->frontend.ops, + &dvb_dummy_fe_qam_ops, + sizeof(struct dvb_frontend_ops)); + + state->frontend.demodulator_priv = state; + return &state->frontend; +} +EXPORT_SYMBOL(dvb_dummy_fe_qam_attach); + +static const struct dvb_frontend_ops dvb_dummy_fe_ofdm_ops = { + .delsys = { SYS_DVBT }, + .info = { + .name = "Dummy DVB-T", + .frequency_min_hz = 0, + .frequency_max_hz = 863250 * kHz, + .frequency_stepsize_hz = 62500, + .caps = FE_CAN_FEC_1_2 | + FE_CAN_FEC_2_3 | + FE_CAN_FEC_3_4 | + FE_CAN_FEC_4_5 | + FE_CAN_FEC_5_6 | + FE_CAN_FEC_6_7 | + FE_CAN_FEC_7_8 | + FE_CAN_FEC_8_9 | + FE_CAN_FEC_AUTO | + FE_CAN_QAM_16 | + FE_CAN_QAM_64 | + FE_CAN_QAM_AUTO | + FE_CAN_TRANSMISSION_MODE_AUTO | + FE_CAN_GUARD_INTERVAL_AUTO | + FE_CAN_HIERARCHY_AUTO, + }, + + .release = dvb_dummy_fe_release, + + .init = dvb_dummy_fe_init, + .sleep = dvb_dummy_fe_sleep, + + .set_frontend = dvb_dummy_fe_set_frontend, + .get_frontend = dvb_dummy_fe_get_frontend, + + .read_status = dvb_dummy_fe_read_status, + .read_ber = dvb_dummy_fe_read_ber, + .read_signal_strength = dvb_dummy_fe_read_signal_strength, + .read_snr = dvb_dummy_fe_read_snr, + .read_ucblocks = dvb_dummy_fe_read_ucblocks, +}; + +static const struct dvb_frontend_ops dvb_dummy_fe_qam_ops = { + .delsys = { SYS_DVBC_ANNEX_A }, + .info = { + .name = "Dummy DVB-C", + .frequency_min_hz = 51 * MHz, + .frequency_max_hz = 858 * MHz, + .frequency_stepsize_hz = 62500, + /* symbol_rate_min: SACLK/64 == (XIN/2)/64 */ + .symbol_rate_min = (57840000 / 2) / 64, + .symbol_rate_max = (57840000 / 2) / 4, /* SACLK/4 */ + .caps = FE_CAN_QAM_16 | + FE_CAN_QAM_32 | + FE_CAN_QAM_64 | + FE_CAN_QAM_128 | + FE_CAN_QAM_256 | + FE_CAN_FEC_AUTO | + FE_CAN_INVERSION_AUTO + }, + + .release = dvb_dummy_fe_release, + + .init = dvb_dummy_fe_init, + .sleep = dvb_dummy_fe_sleep, + + .set_frontend = dvb_dummy_fe_set_frontend, + .get_frontend = dvb_dummy_fe_get_frontend, + + .read_status = dvb_dummy_fe_read_status, + .read_ber = dvb_dummy_fe_read_ber, + .read_signal_strength = dvb_dummy_fe_read_signal_strength, + .read_snr = dvb_dummy_fe_read_snr, + .read_ucblocks = dvb_dummy_fe_read_ucblocks, +}; + +static const struct dvb_frontend_ops dvb_dummy_fe_qpsk_ops = { + .delsys = { SYS_DVBS }, + .info = { + .name = "Dummy DVB-S", + .frequency_min_hz = 950 * MHz, + .frequency_max_hz = 2150 * MHz, + .frequency_stepsize_hz = 250 * kHz, + .frequency_tolerance_hz = 29500 * kHz, + .symbol_rate_min = 1000000, + .symbol_rate_max = 45000000, + .caps = FE_CAN_INVERSION_AUTO | + FE_CAN_FEC_1_2 | + FE_CAN_FEC_2_3 | + FE_CAN_FEC_3_4 | + FE_CAN_FEC_5_6 | + FE_CAN_FEC_7_8 | + FE_CAN_FEC_AUTO | + FE_CAN_QPSK + }, + + .release = dvb_dummy_fe_release, + + .init = dvb_dummy_fe_init, + .sleep = dvb_dummy_fe_sleep, + + .set_frontend = dvb_dummy_fe_set_frontend, + .get_frontend = dvb_dummy_fe_get_frontend, + + .read_status = dvb_dummy_fe_read_status, + .read_ber = dvb_dummy_fe_read_ber, + .read_signal_strength = dvb_dummy_fe_read_signal_strength, + .read_snr = dvb_dummy_fe_read_snr, + .read_ucblocks = dvb_dummy_fe_read_ucblocks, + + .set_voltage = dvb_dummy_fe_set_voltage, + .set_tone = dvb_dummy_fe_set_tone, +}; + +MODULE_DESCRIPTION("DVB DUMMY Frontend"); +MODULE_AUTHOR("Emard"); +MODULE_LICENSE("GPL"); diff --git a/drivers/media/pci/ddbridge/ddbridge-dummy-fe.h b/drivers/media/pci/ddbridge/ddbridge-dummy-fe.h new file mode 100644 index 000000000000..463abf5ebd56 --- /dev/null +++ b/drivers/media/pci/ddbridge/ddbridge-dummy-fe.h @@ -0,0 +1,36 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * Driver for Dummy Frontend + * + * Written by Emard + */ + +#ifndef DVB_DUMMY_FE_H +#define DVB_DUMMY_FE_H + +#include +#include + +#if IS_REACHABLE(CONFIG_DVB_DUMMY_FE) +struct dvb_frontend *dvb_dummy_fe_ofdm_attach(void); +struct dvb_frontend *dvb_dummy_fe_qpsk_attach(void); +struct dvb_frontend *dvb_dummy_fe_qam_attach(void); +#else +static inline struct dvb_frontend *dvb_dummy_fe_ofdm_attach(void) +{ + pr_warn("%s: driver disabled by Kconfig\n", __func__); + return NULL; +} +static inline struct dvb_frontend *dvb_dummy_fe_qpsk_attach(void) +{ + pr_warn("%s: driver disabled by Kconfig\n", __func__); + return NULL; +} +static inline struct dvb_frontend *dvb_dummy_fe_qam_attach(void) +{ + pr_warn("%s: driver disabled by Kconfig\n", __func__); + return NULL; +} +#endif /* CONFIG_DVB_DUMMY_FE */ + +#endif // DVB_DUMMY_FE_H