^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Copyright 2013 Cisco Systems, Inc. and/or its affiliates.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * All rights reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) /* kernel includes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/usb.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/input.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/mutex.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/i2c.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) /* V4l includes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/videodev2.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <media/v4l2-common.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <media/v4l2-device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <media/v4l2-ioctl.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <media/v4l2-event.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <linux/platform_data/media/si4713.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include "si4713.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) /* driver and module definitions */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) MODULE_AUTHOR("Dinesh Ram <dinesh.ram@cern.ch>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) MODULE_DESCRIPTION("Si4713 FM Transmitter USB driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) MODULE_LICENSE("GPL v2");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) /* The Device announces itself as Cygnal Integrated Products, Inc. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #define USB_SI4713_VENDOR 0x10c4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #define USB_SI4713_PRODUCT 0x8244
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #define BUFFER_LENGTH 64
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) #define USB_TIMEOUT 1000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) #define USB_RESP_TIMEOUT 50000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) /* USB Device ID List */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) static const struct usb_device_id usb_si4713_usb_device_table[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) {USB_DEVICE_AND_INTERFACE_INFO(USB_SI4713_VENDOR, USB_SI4713_PRODUCT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) USB_CLASS_HID, 0, 0) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) { } /* Terminating entry */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) MODULE_DEVICE_TABLE(usb, usb_si4713_usb_device_table);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) struct si4713_usb_device {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) struct usb_device *usbdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) struct usb_interface *intf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) struct video_device vdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) struct v4l2_device v4l2_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) struct v4l2_subdev *v4l2_subdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) struct mutex lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) struct i2c_adapter i2c_adapter;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) u8 *buffer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) static inline struct si4713_usb_device *to_si4713_dev(struct v4l2_device *v4l2_dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) return container_of(v4l2_dev, struct si4713_usb_device, v4l2_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) static int vidioc_querycap(struct file *file, void *priv,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) struct v4l2_capability *v)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) struct si4713_usb_device *radio = video_drvdata(file);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) strscpy(v->driver, "radio-usb-si4713", sizeof(v->driver));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) strscpy(v->card, "Si4713 FM Transmitter", sizeof(v->card));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) usb_make_path(radio->usbdev, v->bus_info, sizeof(v->bus_info));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) static int vidioc_g_modulator(struct file *file, void *priv,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) struct v4l2_modulator *vm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) struct si4713_usb_device *radio = video_drvdata(file);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) return v4l2_subdev_call(radio->v4l2_subdev, tuner, g_modulator, vm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) static int vidioc_s_modulator(struct file *file, void *priv,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) const struct v4l2_modulator *vm)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) struct si4713_usb_device *radio = video_drvdata(file);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) return v4l2_subdev_call(radio->v4l2_subdev, tuner, s_modulator, vm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) static int vidioc_s_frequency(struct file *file, void *priv,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) const struct v4l2_frequency *vf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) struct si4713_usb_device *radio = video_drvdata(file);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) return v4l2_subdev_call(radio->v4l2_subdev, tuner, s_frequency, vf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) static int vidioc_g_frequency(struct file *file, void *priv,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) struct v4l2_frequency *vf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) struct si4713_usb_device *radio = video_drvdata(file);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) return v4l2_subdev_call(radio->v4l2_subdev, tuner, g_frequency, vf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) static const struct v4l2_ioctl_ops usb_si4713_ioctl_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) .vidioc_querycap = vidioc_querycap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) .vidioc_g_modulator = vidioc_g_modulator,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) .vidioc_s_modulator = vidioc_s_modulator,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) .vidioc_g_frequency = vidioc_g_frequency,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) .vidioc_s_frequency = vidioc_s_frequency,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) .vidioc_log_status = v4l2_ctrl_log_status,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) /* File system interface */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) static const struct v4l2_file_operations usb_si4713_fops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) .owner = THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) .open = v4l2_fh_open,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) .release = v4l2_fh_release,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) .poll = v4l2_ctrl_poll,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) .unlocked_ioctl = video_ioctl2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) static void usb_si4713_video_device_release(struct v4l2_device *v4l2_dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) struct si4713_usb_device *radio = to_si4713_dev(v4l2_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) struct i2c_adapter *adapter = &radio->i2c_adapter;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) i2c_del_adapter(adapter);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) v4l2_device_unregister(&radio->v4l2_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) kfree(radio->buffer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) kfree(radio);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) * This command sequence emulates the behaviour of the Windows driver.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) * The structure of these commands was determined by sniffing the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) * usb traffic of the device during startup.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) * Most likely, these commands make some queries to the device.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) * Commands are sent to enquire parameters like the bus mode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) * component revision, boot mode, the device serial number etc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) * These commands are necessary to be sent in this order during startup.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) * The device fails to powerup if these commands are not sent.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) * The complete list of startup commands is given in the start_seq table below.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) static int si4713_send_startup_command(struct si4713_usb_device *radio)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) unsigned long until_jiffies = jiffies + usecs_to_jiffies(USB_RESP_TIMEOUT) + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) u8 *buffer = radio->buffer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) int retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) /* send the command */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) retval = usb_control_msg(radio->usbdev, usb_sndctrlpipe(radio->usbdev, 0),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 0x09, 0x21, 0x033f, 0, radio->buffer,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) BUFFER_LENGTH, USB_TIMEOUT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) if (retval < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) for (;;) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) /* receive the response */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) retval = usb_control_msg(radio->usbdev, usb_rcvctrlpipe(radio->usbdev, 0),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 0x01, 0xa1, 0x033f, 0, radio->buffer,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) BUFFER_LENGTH, USB_TIMEOUT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) if (retval < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) if (!radio->buffer[1]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) /* USB traffic sniffing showed that some commands require
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) * additional checks. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) switch (buffer[1]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) case 0x32:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) if (radio->buffer[2] == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) case 0x14:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) case 0x12:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) if (radio->buffer[2] & SI4713_CTS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) case 0x06:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) if ((radio->buffer[2] & SI4713_CTS) && radio->buffer[9] == 0x08)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) if (time_is_before_jiffies(until_jiffies))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) msleep(3);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) struct si4713_start_seq_table {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) int len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) u8 payload[8];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) * Some of the startup commands that could be recognized are :
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) * (0x03): Get serial number of the board (Response : CB000-00-00)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) * (0x06, 0x03, 0x03, 0x08, 0x01, 0x0f) : Get Component revision
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) static const struct si4713_start_seq_table start_seq[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) { 1, { 0x03 } },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) { 2, { 0x32, 0x7f } },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) { 6, { 0x06, 0x03, 0x03, 0x08, 0x01, 0x0f } },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) { 2, { 0x14, 0x02 } },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) { 2, { 0x09, 0x90 } },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) { 3, { 0x08, 0x90, 0xfa } },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) { 2, { 0x36, 0x01 } },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) { 2, { 0x05, 0x03 } },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) { 7, { 0x06, 0x00, 0x06, 0x0e, 0x01, 0x0f, 0x05 } },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) { 1, { 0x12 } },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) /* Commands that are sent after pressing the 'Initialize'
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) button in the windows application */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) { 1, { 0x03 } },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) { 1, { 0x01 } },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) { 2, { 0x09, 0x90 } },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) { 3, { 0x08, 0x90, 0xfa } },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) { 1, { 0x34 } },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) { 2, { 0x35, 0x01 } },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) { 2, { 0x36, 0x01 } },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) { 2, { 0x30, 0x09 } },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) { 4, { 0x30, 0x06, 0x00, 0xe2 } },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) { 3, { 0x31, 0x01, 0x30 } },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) { 3, { 0x31, 0x04, 0x09 } },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) { 2, { 0x05, 0x02 } },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) { 6, { 0x06, 0x03, 0x03, 0x08, 0x01, 0x0f } },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) static int si4713_start_seq(struct si4713_usb_device *radio)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) int retval = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) radio->buffer[0] = 0x3f;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) for (i = 0; i < ARRAY_SIZE(start_seq); i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) int len = start_seq[i].len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) const u8 *payload = start_seq[i].payload;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) memcpy(radio->buffer + 1, payload, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) memset(radio->buffer + len + 1, 0, BUFFER_LENGTH - 1 - len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) retval = si4713_send_startup_command(radio);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) static struct i2c_board_info si4713_board_info = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) I2C_BOARD_INFO("si4713", SI4713_I2C_ADDR_BUSEN_HIGH),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) struct si4713_command_table {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) int command_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) u8 payload[8];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) * Structure of a command :
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) * Byte 1 : 0x3f (always)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) * Byte 2 : 0x06 (send a command)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) * Byte 3 : Unknown
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) * Byte 4 : Number of arguments + 1 (for the command byte)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) * Byte 5 : Number of response bytes
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) static struct si4713_command_table command_table[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) { SI4713_CMD_POWER_UP, { 0x00, SI4713_PWUP_NARGS + 1, SI4713_PWUP_NRESP} },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) { SI4713_CMD_GET_REV, { 0x03, 0x01, SI4713_GETREV_NRESP } },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) { SI4713_CMD_POWER_DOWN, { 0x00, 0x01, SI4713_PWDN_NRESP} },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) { SI4713_CMD_SET_PROPERTY, { 0x00, SI4713_SET_PROP_NARGS + 1, SI4713_SET_PROP_NRESP } },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) { SI4713_CMD_GET_PROPERTY, { 0x00, SI4713_GET_PROP_NARGS + 1, SI4713_GET_PROP_NRESP } },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) { SI4713_CMD_TX_TUNE_FREQ, { 0x03, SI4713_TXFREQ_NARGS + 1, SI4713_TXFREQ_NRESP } },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) { SI4713_CMD_TX_TUNE_POWER, { 0x03, SI4713_TXPWR_NARGS + 1, SI4713_TXPWR_NRESP } },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) { SI4713_CMD_TX_TUNE_MEASURE, { 0x03, SI4713_TXMEA_NARGS + 1, SI4713_TXMEA_NRESP } },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) { SI4713_CMD_TX_TUNE_STATUS, { 0x00, SI4713_TXSTATUS_NARGS + 1, SI4713_TXSTATUS_NRESP } },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) { SI4713_CMD_TX_ASQ_STATUS, { 0x03, SI4713_ASQSTATUS_NARGS + 1, SI4713_ASQSTATUS_NRESP } },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) { SI4713_CMD_GET_INT_STATUS, { 0x03, 0x01, SI4713_GET_STATUS_NRESP } },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) { SI4713_CMD_TX_RDS_BUFF, { 0x03, SI4713_RDSBUFF_NARGS + 1, SI4713_RDSBUFF_NRESP } },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) { SI4713_CMD_TX_RDS_PS, { 0x00, SI4713_RDSPS_NARGS + 1, SI4713_RDSPS_NRESP } },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) static int send_command(struct si4713_usb_device *radio, u8 *payload, char *data, int len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) int retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) radio->buffer[0] = 0x3f;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) radio->buffer[1] = 0x06;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) memcpy(radio->buffer + 2, payload, 3);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) memcpy(radio->buffer + 5, data, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) memset(radio->buffer + 5 + len, 0, BUFFER_LENGTH - 5 - len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) /* send the command */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) retval = usb_control_msg(radio->usbdev, usb_sndctrlpipe(radio->usbdev, 0),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) 0x09, 0x21, 0x033f, 0, radio->buffer,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) BUFFER_LENGTH, USB_TIMEOUT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) return retval < 0 ? retval : 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) static int si4713_i2c_read(struct si4713_usb_device *radio, char *data, int len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) unsigned long until_jiffies = jiffies + usecs_to_jiffies(USB_RESP_TIMEOUT) + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) int retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) /* receive the response */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) for (;;) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) retval = usb_control_msg(radio->usbdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) usb_rcvctrlpipe(radio->usbdev, 0),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) 0x01, 0xa1, 0x033f, 0, radio->buffer,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) BUFFER_LENGTH, USB_TIMEOUT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) if (retval < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) * Check that we get a valid reply back (buffer[1] == 0) and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) * that CTS is set before returning, otherwise we wait and try
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) * again. The i2c driver also does the CTS check, but the timeouts
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) * used there are much too small for this USB driver, so we wait
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) * for it here.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) if (radio->buffer[1] == 0 && (radio->buffer[2] & SI4713_CTS)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) memcpy(data, radio->buffer + 2, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) if (time_is_before_jiffies(until_jiffies)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) /* Zero the status value, ensuring CTS isn't set */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) data[0] = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) msleep(3);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) static int si4713_i2c_write(struct si4713_usb_device *radio, char *data, int len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) int retval = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) if (len > BUFFER_LENGTH - 5)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) for (i = 0; i < ARRAY_SIZE(command_table); i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) if (data[0] == command_table[i].command_id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) retval = send_command(radio, command_table[i].payload,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) data, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) return retval < 0 ? retval : 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) static int si4713_transfer(struct i2c_adapter *i2c_adapter,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) struct i2c_msg *msgs, int num)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) struct si4713_usb_device *radio = i2c_get_adapdata(i2c_adapter);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) int retval = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) for (i = 0; i < num; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) if (msgs[i].flags & I2C_M_RD)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) retval = si4713_i2c_read(radio, msgs[i].buf, msgs[i].len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) retval = si4713_i2c_write(radio, msgs[i].buf, msgs[i].len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) if (retval)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) return retval ? retval : num;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) static u32 si4713_functionality(struct i2c_adapter *adapter)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) static const struct i2c_algorithm si4713_algo = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) .master_xfer = si4713_transfer,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) .functionality = si4713_functionality,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) /* This name value shows up in the sysfs filename associated
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) with this I2C adapter */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) static const struct i2c_adapter si4713_i2c_adapter_template = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) .name = "si4713-i2c",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) .owner = THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) .algo = &si4713_algo,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) static int si4713_register_i2c_adapter(struct si4713_usb_device *radio)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) radio->i2c_adapter = si4713_i2c_adapter_template;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) /* set up sysfs linkage to our parent device */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) radio->i2c_adapter.dev.parent = &radio->usbdev->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) i2c_set_adapdata(&radio->i2c_adapter, radio);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) return i2c_add_adapter(&radio->i2c_adapter);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) /* check if the device is present and register with v4l and usb if it is */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) static int usb_si4713_probe(struct usb_interface *intf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) const struct usb_device_id *id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) struct si4713_usb_device *radio;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) struct i2c_adapter *adapter;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) struct v4l2_subdev *sd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) int retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) dev_info(&intf->dev, "Si4713 development board discovered: (%04X:%04X)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) id->idVendor, id->idProduct);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) /* Initialize local device structure */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) radio = kzalloc(sizeof(struct si4713_usb_device), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) if (radio)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) radio->buffer = kmalloc(BUFFER_LENGTH, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) if (!radio || !radio->buffer) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) dev_err(&intf->dev, "kmalloc for si4713_usb_device failed\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) kfree(radio);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) mutex_init(&radio->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) radio->usbdev = interface_to_usbdev(intf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) radio->intf = intf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) usb_set_intfdata(intf, &radio->v4l2_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) retval = si4713_start_seq(radio);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) if (retval < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) goto err_v4l2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) retval = v4l2_device_register(&intf->dev, &radio->v4l2_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) if (retval < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) dev_err(&intf->dev, "couldn't register v4l2_device\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) goto err_v4l2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) retval = si4713_register_i2c_adapter(radio);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) if (retval < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) dev_err(&intf->dev, "could not register i2c device\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) goto err_i2cdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) adapter = &radio->i2c_adapter;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) sd = v4l2_i2c_new_subdev_board(&radio->v4l2_dev, adapter,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) &si4713_board_info, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) radio->v4l2_subdev = sd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) if (!sd) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) dev_err(&intf->dev, "cannot get v4l2 subdevice\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) retval = -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) goto del_adapter;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) radio->vdev.ctrl_handler = sd->ctrl_handler;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) radio->v4l2_dev.release = usb_si4713_video_device_release;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) strscpy(radio->vdev.name, radio->v4l2_dev.name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) sizeof(radio->vdev.name));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) radio->vdev.v4l2_dev = &radio->v4l2_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) radio->vdev.fops = &usb_si4713_fops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) radio->vdev.ioctl_ops = &usb_si4713_ioctl_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) radio->vdev.lock = &radio->lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) radio->vdev.release = video_device_release_empty;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) radio->vdev.vfl_dir = VFL_DIR_TX;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) radio->vdev.device_caps = V4L2_CAP_MODULATOR | V4L2_CAP_RDS_OUTPUT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) video_set_drvdata(&radio->vdev, radio);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) retval = video_register_device(&radio->vdev, VFL_TYPE_RADIO, -1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) if (retval < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) dev_err(&intf->dev, "could not register video device\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) goto del_adapter;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) dev_info(&intf->dev, "V4L2 device registered as %s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) video_device_node_name(&radio->vdev));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) del_adapter:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) i2c_del_adapter(adapter);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) err_i2cdev:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) v4l2_device_unregister(&radio->v4l2_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) err_v4l2:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) kfree(radio->buffer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) kfree(radio);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) static void usb_si4713_disconnect(struct usb_interface *intf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) struct si4713_usb_device *radio = to_si4713_dev(usb_get_intfdata(intf));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) dev_info(&intf->dev, "Si4713 development board now disconnected\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) mutex_lock(&radio->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) usb_set_intfdata(intf, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) video_unregister_device(&radio->vdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) v4l2_device_disconnect(&radio->v4l2_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) mutex_unlock(&radio->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) v4l2_device_put(&radio->v4l2_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) /* USB subsystem interface */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) static struct usb_driver usb_si4713_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) .name = "radio-usb-si4713",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) .probe = usb_si4713_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) .disconnect = usb_si4713_disconnect,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) .id_table = usb_si4713_usb_device_table,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) module_usb_driver(usb_si4713_driver);
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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