/** * Freescale ALSA SoC Machine driver utility * * Author: Timur Tabi * * Copyright 2010 Freescale Semiconductor, Inc. * * This file is licensed under the terms of the GNU General Public License * version 2. This program is licensed "as is" without any warranty of any * kind, whether express or implied. */ #include #include #include #include "fsl_utils.h" /** * fsl_asoc_get_dma_channel - determine the dma channel for a SSI node * * @ssi_np: pointer to the SSI device tree node * @name: name of the phandle pointing to the dma channel * @dai: ASoC DAI link pointer to be filled with platform_name * @dma_channel_id: dma channel id to be returned * @dma_id: dma id to be returned * * This function determines the dma and channel id for given SSI node. It * also discovers the platform_name for the ASoC DAI link. */ int fsl_asoc_get_dma_channel(struct device_node *ssi_np, const char *name, struct snd_soc_dai_link *dai, unsigned int *dma_channel_id, unsigned int *dma_id) { struct resource res; struct device_node *dma_channel_np, *dma_np; const u32 *iprop; int ret; dma_channel_np = of_parse_phandle(ssi_np, name, 0); if (!dma_channel_np) return -EINVAL; if (!of_device_is_compatible(dma_channel_np, "fsl,ssi-dma-channel")) { of_node_put(dma_channel_np); return -EINVAL; } /* Determine the dev_name for the device_node. This code mimics the * behavior of of_device_make_bus_id(). We need this because ASoC uses * the dev_name() of the device to match the platform (DMA) device with * the CPU (SSI) device. It's all ugly and hackish, but it works (for * now). * * dai->platform name should already point to an allocated buffer. */ ret = of_address_to_resource(dma_channel_np, 0, &res); if (ret) { of_node_put(dma_channel_np); return ret; } snprintf((char *)dai->platform_name, DAI_NAME_SIZE, "%llx.%s", (unsigned long long) res.start, dma_channel_np->name); iprop = of_get_property(dma_channel_np, "cell-index", NULL); if (!iprop) { of_node_put(dma_channel_np); return -EINVAL; } *dma_channel_id = be32_to_cpup(iprop); dma_np = of_get_parent(dma_channel_np); iprop = of_get_property(dma_np, "cell-index", NULL); if (!iprop) { of_node_put(dma_np); return -EINVAL; } *dma_id = be32_to_cpup(iprop); of_node_put(dma_np); of_node_put(dma_channel_np); return 0; } EXPORT_SYMBOL(fsl_asoc_get_dma_channel); MODULE_AUTHOR("Timur Tabi "); MODULE_DESCRIPTION("Freescale ASoC utility code"); MODULE_LICENSE("GPL v2"); 164976a6014d534ce3035909'/>
path: root/sound/firewire/oxfw/oxfw-midi.c
diff options
context:
space:
mode:
authorChristophe JAILLET <christophe.jaillet@wanadoo.fr>2017-01-31 00:47:30 -0800
committerDmitry Torokhov <dmitry.torokhov@gmail.com>2017-01-31 00:51:06 -0800
commit05e0be7c900797e9164976a6014d534ce3035909 (patch)
tree6064ddf732b21c686c958cb9da73f6eae6de5a27 /sound/firewire/oxfw/oxfw-midi.c
parent3f5c34c6d4688b3b7e1dbc7bbc68a2f03a0d6b0c (diff)
Input: synaptics-rmi4 - fix reversed conditions in enable/disable_irq_wake
These tests are reversed. A warning should be displayed if an error is returned, not on success. Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'sound/firewire/oxfw/oxfw-midi.c')