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S. Almeida" X-Google-Original-From: Daniel W. S. Almeida To: mchehab@kernel.org, sean@mess.org, tglx@linutronix.de, gregkh@linuxfoundation.org Date: Thu, 9 Jan 2020 12:24:08 -0300 Message-Id: <20200109152408.919325-2-dwlsalmeida@gmail.com> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200109152408.919325-1-dwlsalmeida@gmail.com> References: <20200109152408.919325-1-dwlsalmeida@gmail.com> MIME-Version: 1.0 Cc: linux-kernel@vger.kernel.org, linux-kernel-mentees@lists.linuxfoundation.org, "Daniel W. S. Almeida" , linux-media@vger.kernel.org Subject: [Linux-kernel-mentees] [PATCH 1/1] media: dvb_dummy_tuner: implement driver skeleton X-BeenThere: linux-kernel-mentees@lists.linuxfoundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: linux-kernel-mentees-bounces@lists.linuxfoundation.org Sender: "Linux-kernel-mentees" From: "Daniel W. S. Almeida" Implement the skeleton for the tuner driver in a separate file. Signed-off-by: Daniel W. S. Almeida --- drivers/media/tuners/Kconfig | 7 ++ drivers/media/tuners/Makefile | 1 + drivers/media/tuners/dvb_dummy_tuner.c | 153 +++++++++++++++++++++++++ drivers/media/tuners/dvb_dummy_tuner.h | 20 ++++ 4 files changed, 181 insertions(+) create mode 100644 drivers/media/tuners/dvb_dummy_tuner.c create mode 100644 drivers/media/tuners/dvb_dummy_tuner.h diff --git a/drivers/media/tuners/Kconfig b/drivers/media/tuners/Kconfig index e104bb7766e1..efa1591fe0ae 100644 --- a/drivers/media/tuners/Kconfig +++ b/drivers/media/tuners/Kconfig @@ -296,4 +296,11 @@ config MEDIA_TUNER_QM1D1B0004 default m if !MEDIA_SUBDRV_AUTOSELECT help Sharp QM1D1B0004 ISDB-S tuner driver. + +config MEDIA_TUNER_DVB_DUMMY_TUNER + tristate "Dummy tuner" + depends on MEDIA_SUPPORT && I2C + default m if !MEDIA_SUBDRV_AUTOSELECT + help + Dummy tuner driver for common TV standards. endmenu diff --git a/drivers/media/tuners/Makefile b/drivers/media/tuners/Makefile index 7b4f8423501e..f98de1cf2e19 100644 --- a/drivers/media/tuners/Makefile +++ b/drivers/media/tuners/Makefile @@ -44,5 +44,6 @@ obj-$(CONFIG_MEDIA_TUNER_QM1D1C0042) += qm1d1c0042.o obj-$(CONFIG_MEDIA_TUNER_QM1D1B0004) += qm1d1b0004.o obj-$(CONFIG_MEDIA_TUNER_M88RS6000T) += m88rs6000t.o obj-$(CONFIG_MEDIA_TUNER_TDA18250) += tda18250.o +obj-$(CONFIG_MEDIA_TUNER_DVB_DUMMY_TUNER) += dvb_dummy_tuner.o ccflags-y += -I$(srctree)/drivers/media/dvb-frontends diff --git a/drivers/media/tuners/dvb_dummy_tuner.c b/drivers/media/tuners/dvb_dummy_tuner.c new file mode 100644 index 000000000000..63d2e47d4739 --- /dev/null +++ b/drivers/media/tuners/dvb_dummy_tuner.c @@ -0,0 +1,153 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Driver for Dummy Frontend + * + * Written by Daniel W. S. Almeida + */ + +#include +#include +#include +#include +#include +#include +#include "dvb_dummy_tuner.h" + +struct dvb_dummy_tuner_dev { + struct dvb_frontend *fe; +}; + +static void dvb_dummy_tuner_release(struct dvb_frontend *fe) +{ +} + +static int dvb_dummy_tuner_init(struct dvb_frontend *fe) +{ + return 0; +} + +static int dvb_dummy_tuner_sleep(struct dvb_frontend *fe) +{ + return 0; +} + +static int dvb_dummy_tuner_suspend(struct dvb_frontend *fe) +{ + return 0; +} + +static int dvb_dummy_tuner_resume(struct dvb_frontend *fe) +{ + return 0; +} + +static int dvb_dummy_tuner_set_params(struct dvb_frontend *fe) +{ + return 0; +} + +static int dvb_dummy_tuner_set_config(struct dvb_frontend *fe, void *priv_cfg) +{ + return 0; +} + +static int dvb_dummy_tuner_get_frequency(struct dvb_frontend *fe, + u32 *frequency) +{ + return 0; +} + +static int dvb_dummy_tuner_get_bandwidth(struct dvb_frontend *fe, + u32 *bandwidth) +{ + return 0; +} + +static int dvb_dummy_tuner_get_if_frequency(struct dvb_frontend *fe, + u32 *frequency) +{ + return 0; +} + +static int dvb_dummy_tuner_get_status(struct dvb_frontend *fe, u32 *status) +{ + return 0; +} + +static const struct dvb_tuner_ops dvb_dummy_tuner_ops = { + .release = dvb_dummy_tuner_release, + .init = dvb_dummy_tuner_init, + .sleep = dvb_dummy_tuner_sleep, + .suspend = dvb_dummy_tuner_suspend, + .resume = dvb_dummy_tuner_resume, + .set_params = dvb_dummy_tuner_set_params, + .set_config = dvb_dummy_tuner_set_config, + .get_bandwidth = dvb_dummy_tuner_get_bandwidth, + .get_frequency = dvb_dummy_tuner_get_frequency, + .get_if_frequency = dvb_dummy_tuner_get_if_frequency, + .get_status = dvb_dummy_tuner_get_status, +}; + +static const struct i2c_device_id dvb_dummy_tuner_i2c_id_table[] = { + {"dvb_dummy_tuner", 0}, + {} +}; +MODULE_DEVICE_TABLE(i2c, dvb_dummy_tuner_i2c_id_table); + +static int dvb_dummy_tuner_i2c_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + int ret = 0; + struct dvb_dummy_tuner_config *config = client->dev.platform_data; + struct dvb_frontend *fe = config->fe; + struct dvb_dummy_tuner_dev *tuner_dev = NULL; + + tuner_dev = kzalloc(sizeof(*tuner_dev), GFP_KERNEL); + if (!tuner_dev) { + ret = -ENOMEM; + goto err; + } + + i2c_set_clientdata(client, tuner_dev); + tuner_dev->fe = config->fe; + + memcpy(&fe->ops.tuner_ops, + &dvb_dummy_tuner_ops, + sizeof(struct dvb_tuner_ops)); + + fe->tuner_priv = client; + + pr_debug("%s: Successfully probed %s\n", __func__, client->name); + return ret; + +err: + pr_err("%s: failed\n", __func__); + return ret; +} + +static int dvb_dummy_tuner_i2c_remove(struct i2c_client *client) +{ + struct dvb_dummy_tuner_dev *tuner_dev = i2c_get_clientdata(client); + struct dvb_frontend *fe = tuner_dev->fe; + + memset(&fe->ops.tuner_ops, 0, sizeof(struct dvb_tuner_ops)); + fe->tuner_priv = NULL; + kfree(tuner_dev); + + return 0; +} + +static struct i2c_driver dvb_dummy_tuner_i2c_driver = { + .driver = { + .name = "dvb_dummy_tuner", + .suppress_bind_attrs = true, + }, + .probe = dvb_dummy_tuner_i2c_probe, + .remove = dvb_dummy_tuner_i2c_remove, + .id_table = dvb_dummy_tuner_i2c_id_table, +}; +module_i2c_driver(dvb_dummy_tuner_i2c_driver); + +MODULE_DESCRIPTION("DVB Dummy Tuner"); +MODULE_AUTHOR("Daniel W. S. Almeida"); +MODULE_LICENSE("GPL"); diff --git a/drivers/media/tuners/dvb_dummy_tuner.h b/drivers/media/tuners/dvb_dummy_tuner.h new file mode 100644 index 000000000000..fde7628258fa --- /dev/null +++ b/drivers/media/tuners/dvb_dummy_tuner.h @@ -0,0 +1,20 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * DVB Dummy Tuner + * + */ +#ifndef __TUNER_DVB_DUMMY_TUNER_H__ +#define __TUNER_DVB_DUMMY_TUNER_H__ + +#include +/** + * struct dvb_dummy_tuner_config - configuration parameters for the dummy tuner + * + * @fe: + * frontend returned by driver + */ +struct dvb_dummy_tuner_config { + struct dvb_frontend *fe; +}; + +#endif /*__TUNER_DVB_DUMMY_TUNER_H__ */ -- 2.24.1 _______________________________________________ Linux-kernel-mentees mailing list Linux-kernel-mentees@lists.linuxfoundation.org https://lists.linuxfoundation.org/mailman/listinfo/linux-kernel-mentees