[v2,18/19] media: si470x: allow build both USB and I2C at the same time

Message ID	9e596fe9e1fd9d2c27ae9abaeb900b2e0cd49011.1522959716.git.mchehab@s-opensource.com (mailing list archive)
State	New, archived
Headers	show Return-Path: <linux-media-owner@kernel.org> field: "References" From: Mauro Carvalho Chehab <mchehab@s-opensource.com> Cc: Mauro Carvalho Chehab <mchehab@s-opensource.com>, Linux Media Mailing List <linux-media@vger.kernel.org>, Mauro Carvalho Chehab <mchehab@infradead.org>, Hans Verkuil <hverkuil@xs4all.nl>, Douglas Fischer <fischerdouglasc@gmail.com> Subject: [PATCH v2 18/19] media: si470x: allow build both USB and I2C at the same time Date: Thu, 5 Apr 2018 16:29:45 -0400 Message-Id: <9e596fe9e1fd9d2c27ae9abaeb900b2e0cd49011.1522959716.git.mchehab@s-opensource.com> In-Reply-To: <cover.1522959716.git.mchehab@s-opensource.com> References: <cover.1522959716.git.mchehab@s-opensource.com> In-Reply-To: <cover.1522959716.git.mchehab@s-opensource.com> References: <cover.1522959716.git.mchehab@s-opensource.com> To: unlisted-recipients:; (no To-header on input) Sender: linux-media-owner@vger.kernel.org Precedence: bulk

diff --git a/drivers/media/radio/Kconfig b/drivers/media/radio/Kconfig index 192f36f2f4aa..2ed539f9eb87 100644 --- a/drivers/media/radio/Kconfig +++ b/drivers/media/radio/Kconfig @@ -15,10 +15,6 @@ if RADIO_ADAPTERS && VIDEO_V4L2 config RADIO_TEA575X tristate -config RADIO_SI470X - bool "Silicon Labs Si470x FM Radio Receiver support" - depends on VIDEO_V4L2 - source "drivers/media/radio/si470x/Kconfig" config RADIO_SI4713 diff --git a/drivers/media/radio/si470x/Kconfig b/drivers/media/radio/si470x/Kconfig index a466654ee5c9..a21172e413a9 100644 --- a/drivers/media/radio/si470x/Kconfig +++ b/drivers/media/radio/si470x/Kconfig @@ -1,3 +1,17 @@ +config RADIO_SI470X + tristate "Silicon Labs Si470x FM Radio Receiver support" + depends on VIDEO_V4L2 + ---help--- + This is a driver for devices with the Silicon Labs SI470x + chip (either via USB or I2C buses). + + Say Y here if you want to connect this type of radio to your + computer's USB port or if it is used by some other driver + via I2C bus. + + To compile this driver as a module, choose M here: the + module will be called radio-si470x-common. + config USB_SI470X tristate "Silicon Labs Si470x FM Radio Receiver support with USB" depends on USB && RADIO_SI470X @@ -25,7 +39,7 @@ config USB_SI470X config I2C_SI470X tristate "Silicon Labs Si470x FM Radio Receiver support with I2C" - depends on I2C && RADIO_SI470X && !USB_SI470X + depends on I2C && RADIO_SI470X ---help--- This is a driver for I2C devices with the Silicon Labs SI470x chip. diff --git a/drivers/media/radio/si470x/Makefile b/drivers/media/radio/si470x/Makefile index 06964816cfd6..563500823e04 100644 --- a/drivers/media/radio/si470x/Makefile +++ b/drivers/media/radio/si470x/Makefile @@ -2,8 +2,6 @@ # Makefile for radios with Silicon Labs Si470x FM Radio Receivers # -radio-usb-si470x-objs := radio-si470x-usb.o radio-si470x-common.o -radio-i2c-si470x-objs := radio-si470x-i2c.o radio-si470x-common.o - -obj-$(CONFIG_USB_SI470X) += radio-usb-si470x.o -obj-$(CONFIG_I2C_SI470X) += radio-i2c-si470x.o +obj-$(CONFIG_RADIO_SI470X) := radio-si470x-common.o +obj-$(CONFIG_USB_SI470X) += radio-si470x-usb.o +obj-$(CONFIG_I2C_SI470X) += radio-si470x-i2c.o diff --git a/drivers/media/radio/si470x/radio-si470x-common.c b/drivers/media/radio/si470x/radio-si470x-common.c index b94d66e53d4e..23bc50260b85 100644 --- a/drivers/media/radio/si470x/radio-si470x-common.c +++ b/drivers/media/radio/si470x/radio-si470x-common.c @@ -195,7 +195,7 @@ static int si470x_set_band(struct si470x_device *radio, int band) radio->band = band; radio->registers[SYSCONFIG2] &= ~SYSCONFIG2_BAND; radio->registers[SYSCONFIG2] |= radio->band << 6; - return si470x_set_register(radio, SYSCONFIG2); + return radio->set_register(radio, SYSCONFIG2); } /* @@ -207,7 +207,7 @@ static int si470x_set_chan(struct si470x_device *radio, unsigned short chan) unsigned long time_left; bool timed_out = false; - retval = si470x_get_register(radio, POWERCFG); + retval = radio->get_register(radio, POWERCFG); if (retval) return retval; @@ -219,7 +219,7 @@ static int si470x_set_chan(struct si470x_device *radio, unsigned short chan) /* start tuning */ radio->registers[CHANNEL] &= ~CHANNEL_CHAN; radio->registers[CHANNEL] |= CHANNEL_TUNE | chan; - retval = si470x_set_register(radio, CHANNEL); + retval = radio->set_register(radio, CHANNEL); if (retval < 0) goto done; @@ -238,7 +238,7 @@ static int si470x_set_chan(struct si470x_device *radio, unsigned short chan) /* stop tuning */ radio->registers[CHANNEL] &= ~CHANNEL_TUNE; - retval = si470x_set_register(radio, CHANNEL); + retval = radio->set_register(radio, CHANNEL); done: return retval; @@ -272,7 +272,7 @@ static int si470x_get_freq(struct si470x_device *radio, unsigned int *freq) int chan, retval; /* read channel */ - retval = si470x_get_register(radio, READCHAN); + retval = radio->get_register(radio, READCHAN); chan = radio->registers[READCHAN] & READCHAN_READCHAN; /* Frequency (MHz) = Spacing (kHz) x Channel + Bottom of Band (MHz) */ @@ -343,7 +343,7 @@ static int si470x_set_seek(struct si470x_device *radio, radio->registers[POWERCFG] |= POWERCFG_SEEKUP; else radio->registers[POWERCFG] &= ~POWERCFG_SEEKUP; - retval = si470x_set_register(radio, POWERCFG); + retval = radio->set_register(radio, POWERCFG); if (retval < 0) return retval; @@ -362,7 +362,7 @@ static int si470x_set_seek(struct si470x_device *radio, /* stop seeking */ radio->registers[POWERCFG] &= ~POWERCFG_SEEK; - retval = si470x_set_register(radio, POWERCFG); + retval = radio->set_register(radio, POWERCFG); /* try again, if timed out */ if (retval == 0 && timed_out) @@ -381,7 +381,7 @@ int si470x_start(struct si470x_device *radio) /* powercfg */ radio->registers[POWERCFG] = POWERCFG_DMUTE | POWERCFG_ENABLE | POWERCFG_RDSM; - retval = si470x_set_register(radio, POWERCFG); + retval = radio->set_register(radio, POWERCFG); if (retval < 0) goto done; @@ -392,7 +392,7 @@ int si470x_start(struct si470x_device *radio) radio->registers[SYSCONFIG1] |= SYSCONFIG1_GPIO2_INT; if (de) radio->registers[SYSCONFIG1] |= SYSCONFIG1_DE; - retval = si470x_set_register(radio, SYSCONFIG1); + retval = radio->set_register(radio, SYSCONFIG1); if (retval < 0) goto done; @@ -402,7 +402,7 @@ int si470x_start(struct si470x_device *radio) ((radio->band << 6) & SYSCONFIG2_BAND) |/* BAND */ ((space << 4) & SYSCONFIG2_SPACE) | /* SPACE */ 15; /* VOLUME (max) */ - retval = si470x_set_register(radio, SYSCONFIG2); + retval = radio->set_register(radio, SYSCONFIG2); if (retval < 0) goto done; @@ -424,7 +424,7 @@ int si470x_stop(struct si470x_device *radio) /* sysconfig 1 */ radio->registers[SYSCONFIG1] &= ~SYSCONFIG1_RDS; - retval = si470x_set_register(radio, SYSCONFIG1); + retval = radio->set_register(radio, SYSCONFIG1); if (retval < 0) goto done; @@ -432,7 +432,7 @@ int si470x_stop(struct si470x_device *radio) radio->registers[POWERCFG] &= ~POWERCFG_DMUTE; /* POWERCFG_ENABLE has to automatically go low */ radio->registers[POWERCFG] |= POWERCFG_ENABLE | POWERCFG_DISABLE; - retval = si470x_set_register(radio, POWERCFG); + retval = radio->set_register(radio, POWERCFG); done: return retval; @@ -448,7 +448,7 @@ static int si470x_rds_on(struct si470x_device *radio) /* sysconfig 1 */ radio->registers[SYSCONFIG1] |= SYSCONFIG1_RDS; - retval = si470x_set_register(radio, SYSCONFIG1); + retval = radio->set_register(radio, SYSCONFIG1); if (retval < 0) radio->registers[SYSCONFIG1] &= ~SYSCONFIG1_RDS; @@ -542,6 +542,25 @@ static __poll_t si470x_fops_poll(struct file *file, } +static int si470x_fops_open(struct file *file) +{ + struct si470x_device *radio = video_drvdata(file); + + return radio->fops_open(file); +} + + +/* + * si470x_fops_release - file release + */ +static int si470x_fops_release(struct file *file) +{ + struct si470x_device *radio = video_drvdata(file); + + return radio->fops_release(file); +} + + /* * si470x_fops - file operations interface */ @@ -570,13 +589,13 @@ static int si470x_s_ctrl(struct v4l2_ctrl *ctrl) case V4L2_CID_AUDIO_VOLUME: radio->registers[SYSCONFIG2] &= ~SYSCONFIG2_VOLUME; radio->registers[SYSCONFIG2] |= ctrl->val; - return si470x_set_register(radio, SYSCONFIG2); + return radio->set_register(radio, SYSCONFIG2); case V4L2_CID_AUDIO_MUTE: if (ctrl->val) radio->registers[POWERCFG] &= ~POWERCFG_DMUTE; else radio->registers[POWERCFG] |= POWERCFG_DMUTE; - return si470x_set_register(radio, POWERCFG); + return radio->set_register(radio, POWERCFG); default: return -EINVAL; } @@ -596,7 +615,7 @@ static int si470x_vidioc_g_tuner(struct file *file, void *priv, return -EINVAL; if (!radio->status_rssi_auto_update) { - retval = si470x_get_register(radio, STATUSRSSI); + retval = radio->get_register(radio, STATUSRSSI); if (retval < 0) return retval; } @@ -665,7 +684,7 @@ static int si470x_vidioc_s_tuner(struct file *file, void *priv, break; } - return si470x_set_register(radio, POWERCFG); + return radio->set_register(radio, POWERCFG); } @@ -743,6 +762,14 @@ const struct v4l2_ctrl_ops si470x_ctrl_ops = { .s_ctrl = si470x_s_ctrl, }; +static int si470x_vidioc_querycap(struct file *file, void *priv, + struct v4l2_capability *capability) +{ + struct si470x_device *radio = video_drvdata(file); + + return radio->vidioc_querycap(file, priv, capability); +}; + /* * si470x_ioctl_ops - video device ioctl operations */ diff --git a/drivers/media/radio/si470x/radio-si470x-i2c.c b/drivers/media/radio/si470x/radio-si470x-i2c.c index 41709b24b28f..1b3720b1e737 100644 --- a/drivers/media/radio/si470x/radio-si470x-i2c.c +++ b/drivers/media/radio/si470x/radio-si470x-i2c.c @@ -89,7 +89,7 @@ MODULE_PARM_DESC(max_rds_errors, "RDS maximum block errors: *1*"); /* * si470x_get_register - read register */ -int si470x_get_register(struct si470x_device *radio, int regnr) +static int si470x_get_register(struct si470x_device *radio, int regnr) { u16 buf[READ_REG_NUM]; struct i2c_msg msgs[1] = { @@ -113,7 +113,7 @@ int si470x_get_register(struct si470x_device *radio, int regnr) /* * si470x_set_register - write register */ -int si470x_set_register(struct si470x_device *radio, int regnr) +static int si470x_set_register(struct si470x_device *radio, int regnr) { int i; u16 buf[WRITE_REG_NUM]; @@ -174,7 +174,7 @@ static int si470x_get_all_registers(struct si470x_device *radio) /* * si470x_fops_open - file open */ -int si470x_fops_open(struct file *file) +static int si470x_fops_open(struct file *file) { struct si470x_device *radio = video_drvdata(file); int retval = v4l2_fh_open(file); @@ -206,7 +206,7 @@ int si470x_fops_open(struct file *file) /* * si470x_fops_release - file release */ -int si470x_fops_release(struct file *file) +static int si470x_fops_release(struct file *file) { struct si470x_device *radio = video_drvdata(file); @@ -226,8 +226,8 @@ int si470x_fops_release(struct file *file) /* * si470x_vidioc_querycap - query device capabilities */ -int si470x_vidioc_querycap(struct file *file, void *priv, - struct v4l2_capability *capability) +static int si470x_vidioc_querycap(struct file *file, void *priv, + struct v4l2_capability *capability) { strlcpy(capability->driver, DRIVER_NAME, sizeof(capability->driver)); strlcpy(capability->card, DRIVER_CARD, sizeof(capability->card)); @@ -361,6 +361,12 @@ static int si470x_i2c_probe(struct i2c_client *client, mutex_init(&radio->lock); init_completion(&radio->completion); + radio->get_register = si470x_get_register; + radio->set_register = si470x_set_register; + radio->fops_open = si470x_fops_open; + radio->fops_release = si470x_fops_release; + radio->vidioc_querycap = si470x_vidioc_querycap; + retval = v4l2_device_register(&client->dev, &radio->v4l2_dev); if (retval < 0) { dev_err(&client->dev, "couldn't register v4l2_device\n"); diff --git a/drivers/media/radio/si470x/radio-si470x-usb.c b/drivers/media/radio/si470x/radio-si470x-usb.c index 2277e850bb5e..313a95f195a2 100644 --- a/drivers/media/radio/si470x/radio-si470x-usb.c +++ b/drivers/media/radio/si470x/radio-si470x-usb.c @@ -250,7 +250,7 @@ static int si470x_set_report(struct si470x_device *radio, void *buf, int size) /* * si470x_get_register - read register */ -int si470x_get_register(struct si470x_device *radio, int regnr) +static int si470x_get_register(struct si470x_device *radio, int regnr) { int retval; @@ -268,7 +268,7 @@ int si470x_get_register(struct si470x_device *radio, int regnr) /* * si470x_set_register - write register */ -int si470x_set_register(struct si470x_device *radio, int regnr) +static int si470x_set_register(struct si470x_device *radio, int regnr) { int retval; @@ -482,12 +482,12 @@ static void si470x_int_in_callback(struct urb *urb) } -int si470x_fops_open(struct file *file) +static int si470x_fops_open(struct file *file) { return v4l2_fh_open(file); } -int si470x_fops_release(struct file *file) +static int si470x_fops_release(struct file *file) { return v4l2_fh_release(file); } @@ -514,8 +514,8 @@ static void si470x_usb_release(struct v4l2_device *v4l2_dev) /* * si470x_vidioc_querycap - query device capabilities */ -int si470x_vidioc_querycap(struct file *file, void *priv, - struct v4l2_capability *capability) +static int si470x_vidioc_querycap(struct file *file, void *priv, + struct v4l2_capability *capability) { struct si470x_device *radio = video_drvdata(file); @@ -598,6 +598,12 @@ static int si470x_usb_driver_probe(struct usb_interface *intf, mutex_init(&radio->lock); init_completion(&radio->completion); + radio->get_register = si470x_get_register; + radio->set_register = si470x_set_register; + radio->fops_open = si470x_fops_open; + radio->fops_release = si470x_fops_release; + radio->vidioc_querycap = si470x_vidioc_querycap; + iface_desc = intf->cur_altsetting; /* Set up interrupt endpoint information. */ diff --git a/drivers/media/radio/si470x/radio-si470x.h b/drivers/media/radio/si470x/radio-si470x.h index 0202f8eb90c4..35fa0f3bbdd2 100644 --- a/drivers/media/radio/si470x/radio-si470x.h +++ b/drivers/media/radio/si470x/radio-si470x.h @@ -161,6 +161,15 @@ struct si470x_device { struct completion completion; bool status_rssi_auto_update; /* Does RSSI get updated automatic? */ + /* si470x ops */ + + int (*get_register)(struct si470x_device *radio, int regnr); + int (*set_register)(struct si470x_device *radio, int regnr); + int (*fops_open)(struct file *file); + int (*fops_release)(struct file *file); + int (*vidioc_querycap)(struct file *file, void *priv, + struct v4l2_capability *capability); + #if IS_ENABLED(CONFIG_USB_SI470X) /* reference to USB and video device */ struct usb_device *usbdev; @@ -213,13 +222,7 @@ struct si470x_device { **************************************************************************/ extern const struct video_device si470x_viddev_template; extern const struct v4l2_ctrl_ops si470x_ctrl_ops; -int si470x_get_register(struct si470x_device *radio, int regnr); -int si470x_set_register(struct si470x_device *radio, int regnr); int si470x_disconnect_check(struct si470x_device *radio); int si470x_set_freq(struct si470x_device *radio, unsigned int freq); int si470x_start(struct si470x_device *radio); int si470x_stop(struct si470x_device *radio); -int si470x_fops_open(struct file *file); -int si470x_fops_release(struct file *file); -int si470x_vidioc_querycap(struct file *file, void *priv, - struct v4l2_capability *capability);

[v2,18/19] media: si470x: allow build both USB and I2C at the same time

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