/* * Remote processor messaging - sample client driver * * Copyright (C) 2011 Texas Instruments, Inc. * Copyright (C) 2011 Google, Inc. * * Ohad Ben-Cohen * Brian Swetland * * This software is licensed under the terms of the GNU General Public * License version 2, as published by the Free Software Foundation, and * may be copied, distributed, and modified under those terms. * * 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 #include #include #define MSG "hello world!" #define MSG_LIMIT 100 struct instance_data { int rx_count; }; static int rpmsg_sample_cb(struct rpmsg_device *rpdev, void *data, int len, void *priv, u32 src) { int ret; struct instance_data *idata = dev_get_drvdata(&rpdev->dev); dev_info(&rpdev->dev, "incoming msg %d (src: 0x%x)\n", ++idata->rx_count, src); print_hex_dump(KERN_DEBUG, __func__, DUMP_PREFIX_NONE, 16, 1, data, len, true); /* samples should not live forever */ if (idata->rx_count >= MSG_LIMIT) { dev_info(&rpdev->dev, "goodbye!\n"); return 0; } /* send a new message now */ ret = rpmsg_send(rpdev->ept, MSG, strlen(MSG)); if (ret) dev_err(&rpdev->dev, "rpmsg_send failed: %d\n", ret); return 0; } static int rpmsg_sample_probe(struct rpmsg_device *rpdev) { int ret; struct instance_data *idata; dev_info(&rpdev->dev, "new channel: 0x%x -> 0x%x!\n", rpdev->src, rpdev->dst); idata = devm_kzalloc(&rpdev->dev, sizeof(*idata), GFP_KERNEL); if (!idata) return -ENOMEM; dev_set_drvdata(&rpdev->dev, idata); /* send a message to our remote processor */ ret = rpmsg_send(rpdev->ept, MSG, strlen(MSG)); if (ret) { dev_err(&rpdev->dev, "rpmsg_send failed: %d\n", ret); return ret; } return 0; } static void rpmsg_sample_remove(struct rpmsg_device *rpdev) { dev_info(&rpdev->dev, "rpmsg sample client driver is removed\n"); } static struct rpmsg_device_id rpmsg_driver_sample_id_table[] = { { .name = "rpmsg-client-sample" }, { }, }; MODULE_DEVICE_TABLE(rpmsg, rpmsg_driver_sample_id_table); static struct rpmsg_driver rpmsg_sample_client = { .drv.name = KBUILD_MODNAME, .id_table = rpmsg_driver_sample_id_table, .probe = rpmsg_sample_probe, .callback = rpmsg_sample_cb, .remove = rpmsg_sample_remove, }; module_rpmsg_driver(rpmsg_sample_client); MODULE_DESCRIPTION("Remote processor messaging sample client driver"); MODULE_LICENSE("GPL v2"); .git/commit/?id=c92816275674c1491ce228ee49aa030a5fa1be04'>root/sound/soc/dwc
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authorLinus Torvalds <torvalds@linux-foundation.org>2017-01-15 12:40:53 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2017-01-15 12:40:53 -0800
commitc92816275674c1491ce228ee49aa030a5fa1be04 (patch)
tree97deb97f282c6b9f4f58e45a60ea78d1fe31df4e /sound/soc/dwc
parent2d5a7101a140adcf7a5d8677649847fbb2dd5a2f (diff)
parentc8a6a09c1c617402cc9254b2bc8da359a0347d75 (diff)
Merge tag 'char-misc-4.10-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc driver fixes from Greg KH: "Here are some small char/misc driver fixes for 4.10-rc4 that resolve some reported issues. The MEI driver issue resolves a lot of problems that people have been having, as does the mem driver fix. The other minor fixes resolve other reported issues. All of these have been in linux-next for a while" * tag 'char-misc-4.10-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: vme: Fix wrong pointer utilization in ca91cx42_slave_get auxdisplay: fix new ht16k33 build errors ppdev: don't print a free'd string extcon: return error code on failure drivers: char: mem: Fix thinkos in kmem address checks mei: bus: enable OS version only for SPT and newer
Diffstat (limited to 'sound/soc/dwc')