Author | Tokens | Token Proportion | Commits | Commit Proportion |
---|---|---|---|---|
Hans de Goede | 2036 | 99.56% | 5 | 38.46% |
Mauro Carvalho Chehab | 4 | 0.20% | 3 | 23.08% |
Paul Bolle | 1 | 0.05% | 1 | 7.69% |
Arvind Yadav | 1 | 0.05% | 1 | 7.69% |
Julia Lawall | 1 | 0.05% | 1 | 7.69% |
Sakari Ailus | 1 | 0.05% | 1 | 7.69% |
Geert Uytterhoeven | 1 | 0.05% | 1 | 7.69% |
Total | 2045 | 13 |
/* * Linux V4L2 radio driver for the Griffin radioSHARK USB radio receiver * * Note the radioSHARK offers the audio through a regular USB audio device, * this driver only handles the tuning. * * The info necessary to drive the shark was taken from the small userspace * shark.c program by Michael Rolig, which he kindly placed in the Public * Domain. * * Copyright (c) 2012 Hans de Goede <hdegoede@redhat.com> * * 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. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. */ #include <linux/init.h> #include <linux/kernel.h> #include <linux/leds.h> #include <linux/module.h> #include <linux/slab.h> #include <linux/usb.h> #include <linux/workqueue.h> #include <media/v4l2-device.h> #include <media/drv-intf/tea575x.h> #if defined(CONFIG_LEDS_CLASS) || \ (defined(CONFIG_LEDS_CLASS_MODULE) && defined(CONFIG_RADIO_SHARK_MODULE)) #define SHARK_USE_LEDS 1 #endif /* * Version Information */ MODULE_AUTHOR("Hans de Goede <hdegoede@redhat.com>"); MODULE_DESCRIPTION("Griffin radioSHARK, USB radio receiver driver"); MODULE_LICENSE("GPL"); #define SHARK_IN_EP 0x83 #define SHARK_OUT_EP 0x05 #define TEA575X_BIT_MONO (1<<22) /* 0 = stereo, 1 = mono */ #define TEA575X_BIT_BAND_MASK (3<<20) #define TEA575X_BIT_BAND_FM (0<<20) #define TB_LEN 6 #define DRV_NAME "radioshark" #define v4l2_dev_to_shark(d) container_of(d, struct shark_device, v4l2_dev) /* Note BLUE_IS_PULSE comes after NO_LEDS as it is a status bit, not a LED */ enum { BLUE_LED, BLUE_PULSE_LED, RED_LED, NO_LEDS, BLUE_IS_PULSE }; struct shark_device { struct usb_device *usbdev; struct v4l2_device v4l2_dev; struct snd_tea575x tea; #ifdef SHARK_USE_LEDS struct work_struct led_work; struct led_classdev leds[NO_LEDS]; char led_names[NO_LEDS][32]; atomic_t brightness[NO_LEDS]; unsigned long brightness_new; #endif u8 *transfer_buffer; u32 last_val; }; static atomic_t shark_instance = ATOMIC_INIT(0); static void shark_write_val(struct snd_tea575x *tea, u32 val) { struct shark_device *shark = tea->private_data; int i, res, actual_len; /* Avoid unnecessary (slow) USB transfers */ if (shark->last_val == val) return; memset(shark->transfer_buffer, 0, TB_LEN); shark->transfer_buffer[0] = 0xc0; /* Write shift register command */ for (i = 0; i < 4; i++) shark->transfer_buffer[i] |= (val >> (24 - i * 8)) & 0xff; res = usb_interrupt_msg(shark->usbdev, usb_sndintpipe(shark->usbdev, SHARK_OUT_EP), shark->transfer_buffer, TB_LEN, &actual_len, 1000); if (res >= 0) shark->last_val = val; else v4l2_err(&shark->v4l2_dev, "set-freq error: %d\n", res); } static u32 shark_read_val(struct snd_tea575x *tea) { struct shark_device *shark = tea->private_data; int i, res, actual_len; u32 val = 0; memset(shark->transfer_buffer, 0, TB_LEN); shark->transfer_buffer[0] = 0x80; res = usb_interrupt_msg(shark->usbdev, usb_sndintpipe(shark->usbdev, SHARK_OUT_EP), shark->transfer_buffer, TB_LEN, &actual_len, 1000); if (res < 0) { v4l2_err(&shark->v4l2_dev, "request-status error: %d\n", res); return shark->last_val; } res = usb_interrupt_msg(shark->usbdev, usb_rcvintpipe(shark->usbdev, SHARK_IN_EP), shark->transfer_buffer, TB_LEN, &actual_len, 1000); if (res < 0) { v4l2_err(&shark->v4l2_dev, "get-status error: %d\n", res); return shark->last_val; } for (i = 0; i < 4; i++) val |= shark->transfer_buffer[i] << (24 - i * 8); shark->last_val = val; /* * The shark does not allow actually reading the stereo / mono pin :( * So assume that when we're tuned to an FM station and mono has not * been requested, that we're receiving stereo. */ if (((val & TEA575X_BIT_BAND_MASK) == TEA575X_BIT_BAND_FM) && !(val & TEA575X_BIT_MONO)) shark->tea.stereo = true; else shark->tea.stereo = false; return val; } static const struct snd_tea575x_ops shark_tea_ops = { .write_val = shark_write_val, .read_val = shark_read_val, }; #ifdef SHARK_USE_LEDS static void shark_led_work(struct work_struct *work) { struct shark_device *shark = container_of(work, struct shark_device, led_work); int i, res, brightness, actual_len; for (i = 0; i < 3; i++) { if (!test_and_clear_bit(i, &shark->brightness_new)) continue; brightness = atomic_read(&shark->brightness[i]); memset(shark->transfer_buffer, 0, TB_LEN); if (i != RED_LED) { shark->transfer_buffer[0] = 0xA0 + i; shark->transfer_buffer[1] = brightness; } else shark->transfer_buffer[0] = brightness ? 0xA9 : 0xA8; res = usb_interrupt_msg(shark->usbdev, usb_sndintpipe(shark->usbdev, 0x05), shark->transfer_buffer, TB_LEN, &actual_len, 1000); if (res < 0) v4l2_err(&shark->v4l2_dev, "set LED %s error: %d\n", shark->led_names[i], res); } } static void shark_led_set_blue(struct led_classdev *led_cdev, enum led_brightness value) { struct shark_device *shark = container_of(led_cdev, struct shark_device, leds[BLUE_LED]); atomic_set(&shark->brightness[BLUE_LED], value); set_bit(BLUE_LED, &shark->brightness_new); clear_bit(BLUE_IS_PULSE, &shark->brightness_new); schedule_work(&shark->led_work); } static void shark_led_set_blue_pulse(struct led_classdev *led_cdev, enum led_brightness value) { struct shark_device *shark = container_of(led_cdev, struct shark_device, leds[BLUE_PULSE_LED]); atomic_set(&shark->brightness[BLUE_PULSE_LED], 256 - value); set_bit(BLUE_PULSE_LED, &shark->brightness_new); set_bit(BLUE_IS_PULSE, &shark->brightness_new); schedule_work(&shark->led_work); } static void shark_led_set_red(struct led_classdev *led_cdev, enum led_brightness value) { struct shark_device *shark = container_of(led_cdev, struct shark_device, leds[RED_LED]); atomic_set(&shark->brightness[RED_LED], value); set_bit(RED_LED, &shark->brightness_new); schedule_work(&shark->led_work); } static const struct led_classdev shark_led_templates[NO_LEDS] = { [BLUE_LED] = { .name = "%s:blue:", .brightness = LED_OFF, .max_brightness = 127, .brightness_set = shark_led_set_blue, }, [BLUE_PULSE_LED] = { .name = "%s:blue-pulse:", .brightness = LED_OFF, .max_brightness = 255, .brightness_set = shark_led_set_blue_pulse, }, [RED_LED] = { .name = "%s:red:", .brightness = LED_OFF, .max_brightness = 1, .brightness_set = shark_led_set_red, }, }; static int shark_register_leds(struct shark_device *shark, struct device *dev) { int i, retval; atomic_set(&shark->brightness[BLUE_LED], 127); INIT_WORK(&shark->led_work, shark_led_work); for (i = 0; i < NO_LEDS; i++) { shark->leds[i] = shark_led_templates[i]; snprintf(shark->led_names[i], sizeof(shark->led_names[0]), shark->leds[i].name, shark->v4l2_dev.name); shark->leds[i].name = shark->led_names[i]; retval = led_classdev_register(dev, &shark->leds[i]); if (retval) { v4l2_err(&shark->v4l2_dev, "couldn't register led: %s\n", shark->led_names[i]); return retval; } } return 0; } static void shark_unregister_leds(struct shark_device *shark) { int i; for (i = 0; i < NO_LEDS; i++) led_classdev_unregister(&shark->leds[i]); cancel_work_sync(&shark->led_work); } static inline void shark_resume_leds(struct shark_device *shark) { if (test_bit(BLUE_IS_PULSE, &shark->brightness_new)) set_bit(BLUE_PULSE_LED, &shark->brightness_new); else set_bit(BLUE_LED, &shark->brightness_new); set_bit(RED_LED, &shark->brightness_new); schedule_work(&shark->led_work); } #else static int shark_register_leds(struct shark_device *shark, struct device *dev) { v4l2_warn(&shark->v4l2_dev, "CONFIG_LEDS_CLASS not enabled, LED support disabled\n"); return 0; } static inline void shark_unregister_leds(struct shark_device *shark) { } static inline void shark_resume_leds(struct shark_device *shark) { } #endif static void usb_shark_disconnect(struct usb_interface *intf) { struct v4l2_device *v4l2_dev = usb_get_intfdata(intf); struct shark_device *shark = v4l2_dev_to_shark(v4l2_dev); mutex_lock(&shark->tea.mutex); v4l2_device_disconnect(&shark->v4l2_dev); snd_tea575x_exit(&shark->tea); mutex_unlock(&shark->tea.mutex); shark_unregister_leds(shark); v4l2_device_put(&shark->v4l2_dev); } static void usb_shark_release(struct v4l2_device *v4l2_dev) { struct shark_device *shark = v4l2_dev_to_shark(v4l2_dev); v4l2_device_unregister(&shark->v4l2_dev); kfree(shark->transfer_buffer); kfree(shark); } static int usb_shark_probe(struct usb_interface *intf, const struct usb_device_id *id) { struct shark_device *shark; int retval = -ENOMEM; shark = kzalloc(sizeof(struct shark_device), GFP_KERNEL); if (!shark) return retval; shark->transfer_buffer = kmalloc(TB_LEN, GFP_KERNEL); if (!shark->transfer_buffer) goto err_alloc_buffer; v4l2_device_set_name(&shark->v4l2_dev, DRV_NAME, &shark_instance); retval = shark_register_leds(shark, &intf->dev); if (retval) goto err_reg_leds; shark->v4l2_dev.release = usb_shark_release; retval = v4l2_device_register(&intf->dev, &shark->v4l2_dev); if (retval) { v4l2_err(&shark->v4l2_dev, "couldn't register v4l2_device\n"); goto err_reg_dev; } shark->usbdev = interface_to_usbdev(intf); shark->tea.v4l2_dev = &shark->v4l2_dev; shark->tea.private_data = shark; shark->tea.radio_nr = -1; shark->tea.ops = &shark_tea_ops; shark->tea.cannot_mute = true; shark->tea.has_am = true; strscpy(shark->tea.card, "Griffin radioSHARK", sizeof(shark->tea.card)); usb_make_path(shark->usbdev, shark->tea.bus_info, sizeof(shark->tea.bus_info)); retval = snd_tea575x_init(&shark->tea, THIS_MODULE); if (retval) { v4l2_err(&shark->v4l2_dev, "couldn't init tea5757\n"); goto err_init_tea; } return 0; err_init_tea: v4l2_device_unregister(&shark->v4l2_dev); err_reg_dev: shark_unregister_leds(shark); err_reg_leds: kfree(shark->transfer_buffer); err_alloc_buffer: kfree(shark); return retval; } #ifdef CONFIG_PM static int usb_shark_suspend(struct usb_interface *intf, pm_message_t message) { return 0; } static int usb_shark_resume(struct usb_interface *intf) { struct v4l2_device *v4l2_dev = usb_get_intfdata(intf); struct shark_device *shark = v4l2_dev_to_shark(v4l2_dev); mutex_lock(&shark->tea.mutex); snd_tea575x_set_freq(&shark->tea); mutex_unlock(&shark->tea.mutex); shark_resume_leds(shark); return 0; } #endif /* Specify the bcdDevice value, as the radioSHARK and radioSHARK2 share ids */ static const struct usb_device_id usb_shark_device_table[] = { { .match_flags = USB_DEVICE_ID_MATCH_DEVICE_AND_VERSION | USB_DEVICE_ID_MATCH_INT_CLASS, .idVendor = 0x077d, .idProduct = 0x627a, .bcdDevice_lo = 0x0001, .bcdDevice_hi = 0x0001, .bInterfaceClass = 3, }, { } }; MODULE_DEVICE_TABLE(usb, usb_shark_device_table); static struct usb_driver usb_shark_driver = { .name = DRV_NAME, .probe = usb_shark_probe, .disconnect = usb_shark_disconnect, .id_table = usb_shark_device_table, #ifdef CONFIG_PM .suspend = usb_shark_suspend, .resume = usb_shark_resume, .reset_resume = usb_shark_resume, #endif }; module_usb_driver(usb_shark_driver);
Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.
Created with Cregit http://github.com/cregit/cregit
Version 2.0-RC1