/* * 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. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * */ #include #include #include #include "usbaudio.h" #include "helper.h" #include "quirks.h" /* * combine bytes and get an integer value */ unsigned int snd_usb_combine_bytes(unsigned char *bytes, int size) { switch (size) { case 1: return *bytes; case 2: return combine_word(bytes); case 3: return combine_triple(bytes); case 4: return combine_quad(bytes); default: return 0; } } /* * parse descriptor buffer and return the pointer starting the given * descriptor type. */ void *snd_usb_find_desc(void *descstart, int desclen, void *after, u8 dtype) { u8 *p, *end, *next; p = descstart; end = p + desclen; for (; p < end;) { if (p[0] < 2) return NULL; next = p + p[0]; if (next > end) return NULL; if (p[1] == dtype && (!after || (void *)p > after)) { return p; } p = next; } return NULL; } /* * find a class-specified interface descriptor with the given subtype. */ void *snd_usb_find_csint_desc(void *buffer, int buflen, void *after, u8 dsubtype) { unsigned char *p = after; while ((p = snd_usb_find_desc(buffer, buflen, p, USB_DT_CS_INTERFACE)) != NULL) { if (p[0] >= 3 && p[2] == dsubtype) return p; } return NULL; } /* * Wrapper for usb_control_msg(). * Allocates a temp buffer to prevent dmaing from/to the stack. */ int snd_usb_ctl_msg(struct usb_device *dev, unsigned int pipe, __u8 request, __u8 requesttype, __u16 value, __u16 index, void *data, __u16 size) { int err; void *buf = NULL; int timeout; if (size > 0) { buf = kmemdup(data, size, GFP_KERNEL); if (!buf) return -ENOMEM; } if (requesttype & USB_DIR_IN) timeout = USB_CTRL_GET_TIMEOUT; else timeout = USB_CTRL_SET_TIMEOUT; err = usb_control_msg(dev, pipe, request, requesttype, value, index, buf, size, timeout); if (size > 0) { memcpy(data, buf, size); kfree(buf); } snd_usb_ctl_msg_quirk(dev, pipe, request, requesttype, value, index, data, size); return err; } unsigned char snd_usb_parse_datainterval(struct snd_usb_audio *chip, struct usb_host_interface *alts) { switch (snd_usb_get_speed(chip->dev)) { case USB_SPEED_HIGH: case USB_SPEED_WIRELESS: case USB_SPEED_SUPER: case USB_SPEED_SUPER_PLUS: if (get_endpoint(alts, 0)->bInterval >= 1 && get_endpoint(alts, 0)->bInterval <= 4) return get_endpoint(alts, 0)->bInterval - 1; break; default: break; } return 0; } td class='label'>context:space:mode:
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authorJerome Brunet <jbrunet@baylibre.com>2017-01-20 08:20:24 -0800
committerArnd Bergmann <arnd@arndb.de>2017-01-27 16:46:42 +0100
commitfeb3cbea0946c67060e2d5bcb7499b0a6f6700fe (patch)
tree4789978854a7fd97de08f4b77f220bcd9278417b /sound/soc/codecs/da7219.h
parent7a308bb3016f57e5be11a677d15b821536419d36 (diff)
ARM64: dts: meson-gxbb-odroidc2: fix GbE tx link breakage
OdroidC2 GbE link breaks under heavy tx transfer. This happens even if the MAC does not enable Energy Efficient Ethernet (No Low Power state Idle on the Tx path). The problem seems to come from the phy Rx path, entering the LPI state. Disabling EEE advertisement on the phy prevent this feature to be negociated with the link partner and solve the issue. Signed-off-by: Jerome Brunet <jbrunet@baylibre.com> Signed-off-by: Kevin Hilman <khilman@baylibre.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'sound/soc/codecs/da7219.h')