/* * Copyright (C) 2007 by Alan Stern * * 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., 675 Mass Ave, Cambridge, MA 02139, USA. */ /* this file is part of ehci-hcd.c */ /* Display the ports dedicated to the companion controller */ static ssize_t show_companion(struct device *dev, struct device_attribute *attr, char *buf) { struct ehci_hcd *ehci; int nports, index, n; int count = PAGE_SIZE; char *ptr = buf; ehci = hcd_to_ehci(dev_get_drvdata(dev)); nports = HCS_N_PORTS(ehci->hcs_params); for (index = 0; index < nports; ++index) { if (test_bit(index, &ehci->companion_ports)) { n = scnprintf(ptr, count, "%d\n", index + 1); ptr += n; count -= n; } } return ptr - buf; } /* * Dedicate or undedicate a port to the companion controller. * Syntax is "[-]portnum", where a leading '-' sign means * return control of the port to the EHCI controller. */ static ssize_t store_companion(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct ehci_hcd *ehci; int portnum, new_owner; ehci = hcd_to_ehci(dev_get_drvdata(dev)); new_owner = PORT_OWNER; /* Owned by companion */ if (sscanf(buf, "%d", &portnum) != 1) return -EINVAL; if (portnum < 0) { portnum = - portnum; new_owner = 0; /* Owned by EHCI */ } if (portnum <= 0 || portnum > HCS_N_PORTS(ehci->hcs_params)) return -ENOENT; portnum--; if (new_owner) set_bit(portnum, &ehci->companion_ports); else clear_bit(portnum, &ehci->companion_ports); set_owner(ehci, portnum, new_owner); return count; } static DEVICE_ATTR(companion, 0644, show_companion, store_companion); /* * Display / Set uframe_periodic_max */ static ssize_t show_uframe_periodic_max(struct device *dev, struct device_attribute *attr, char *buf) { struct ehci_hcd *ehci; int n; ehci = hcd_to_ehci(dev_get_drvdata(dev)); n = scnprintf(buf, PAGE_SIZE, "%d\n", ehci->uframe_periodic_max); return n; } static ssize_t store_uframe_periodic_max(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct ehci_hcd *ehci; unsigned uframe_periodic_max; unsigned uframe; unsigned long flags; ssize_t ret; ehci = hcd_to_ehci(dev_get_drvdata(dev)); if (kstrtouint(buf, 0, &uframe_periodic_max) < 0) return -EINVAL; if (uframe_periodic_max < 100 || uframe_periodic_max >= 125) { ehci_info(ehci, "rejecting invalid request for " "uframe_periodic_max=%u\n", uframe_periodic_max); return -EINVAL; } ret = -EINVAL; /* * lock, so that our checking does not race with possible periodic * bandwidth allocation through submitting new urbs. */ spin_lock_irqsave (&ehci->lock, flags); /* * for request to decrease max periodic bandwidth, we have to check * to see whether the decrease is possible. */ if (uframe_periodic_max < ehci->uframe_periodic_max) { u8 allocated_max = 0; for (uframe = 0; uframe < EHCI_BANDWIDTH_SIZE; ++uframe) allocated_max = max(allocated_max, ehci->bandwidth[uframe]); if (allocated_max > uframe_periodic_max) { ehci_info(ehci, "cannot decrease uframe_periodic_max because " "periodic bandwidth is already allocated " "(%u > %u)\n", allocated_max, uframe_periodic_max); goto out_unlock; } } /* increasing is always ok */ ehci_info(ehci, "setting max periodic bandwidth to %u%% " "(== %u usec/uframe)\n", 100*uframe_periodic_max/125, uframe_periodic_max); if (uframe_periodic_max != 100) ehci_warn(ehci, "max periodic bandwidth set is non-standard\n"); ehci->uframe_periodic_max = uframe_periodic_max; ret = count; out_unlock: spin_unlock_irqrestore (&ehci->lock, flags); return ret; } static DEVICE_ATTR(uframe_periodic_max, 0644, show_uframe_periodic_max, store_uframe_periodic_max); static inline int create_sysfs_files(struct ehci_hcd *ehci) { struct device *controller = ehci_to_hcd(ehci)->self.controller; int i = 0; /* with integrated TT there is no companion! */ if (!ehci_is_TDI(ehci)) i = device_create_file(controller, &dev_attr_companion); if (i) goto out; i = device_create_file(controller, &dev_attr_uframe_periodic_max); out: return i; } static inline void remove_sysfs_files(struct ehci_hcd *ehci) { struct device *controller = ehci_to_hcd(ehci)->self.controller; /* with integrated TT there is no companion! */ if (!ehci_is_TDI(ehci)) device_remove_file(controller, &dev_attr_companion); device_remove_file(controller, &dev_attr_uframe_periodic_max); } cgit.cgi/linux/net-next.git/tree/?h=nds-private-remove&id=205321f0927ad2303e7f71767d402e0ff36a9a87'>fc103f416e5df36a8a2a6c5d88f24f4f6c5a65bc /sound parent1001354ca34179f3db924eb66672442a173147dc (diff)
regulator: lp873x: Add support for populating input supply
In order to have a proper topology of regulators for a platform, each registering regulator needs to populate supply_name field for identifying its supply's name. Add supply_name field for lp873x regulators. Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com> Acked-for-MFD-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound')