diff options
Diffstat (limited to 'recipes-kernel/most/files/0002-src-most-add-auto-conf-feature.patch')
| -rw-r--r-- | recipes-kernel/most/files/0002-src-most-add-auto-conf-feature.patch | 472 |
1 files changed, 472 insertions, 0 deletions
diff --git a/recipes-kernel/most/files/0002-src-most-add-auto-conf-feature.patch b/recipes-kernel/most/files/0002-src-most-add-auto-conf-feature.patch new file mode 100644 index 000000000..dd811c81b --- /dev/null +++ b/recipes-kernel/most/files/0002-src-most-add-auto-conf-feature.patch @@ -0,0 +1,472 @@ +From 9cb7cb85f59509ac445116e9458c502cf6cb74e6 Mon Sep 17 00:00:00 2001 +From: Christian Gromm <christian.gromm@microchip.com> +Date: Thu, 9 Nov 2017 13:20:23 +0100 +Subject: [PATCH 2/2] src: most: add auto conf feature + +This patch adds the auto configuration feature to the driver +sources. It is needed to have the driver configured automatically +upon start up w/o the need for userspace to set up sysfs. + +Signed-off-by: Christian Gromm <christian.gromm@microchip.com> +--- + driver/Makefile | 3 + + driver/default_conf.c | 162 ++++++++++++++++++++++++++++++++++++++++++++++ + driver/include/mostcore.h | 64 ++++++++++++++++++ + driver/mostcore/core.c | 120 ++++++++++++++++++++++++++++------ + 4 files changed, 331 insertions(+), 18 deletions(-) + create mode 100644 driver/default_conf.c + +diff --git a/Makefile b/Makefile +index e77a4b6..6d74ebe 100644 +--- a/Makefile ++++ b/Makefile +@@ -6,6 +6,9 @@ obj-m := mostcore.o + mostcore-y := mostcore/core.o + CFLAGS_core.o := -I$(src)/include/ + ++obj-m += default_conf.o ++CFLAGL_default_conf.o := -I$(src)/include ++ + obj-m += aim_cdev.o + aim_cdev-y := aim-cdev/cdev.o + CFLAGS_cdev.o := -I$(src)/include/ +diff --git a/default_conf.c b/default_conf.c +new file mode 100644 +index 0000000..adb1786 +--- /dev/null ++++ b/default_conf.c +@@ -0,0 +1,162 @@ ++/* ++ * default_conf.c - Default configuration for the MOST channels. ++ * ++ * Copyright (C) 2017, Microchip Technology Germany II GmbH & Co. KG ++ * ++ * 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. ++ * ++ * This file is licensed under GPLv2. ++ */ ++ ++#include "include/mostcore.h" ++#include <linux/module.h> ++ ++static struct most_config_probe config_probes[] = { ++ ++ /* OS81118 Control */ ++ { ++ .ch_name = "ep8f", ++ .cfg = { ++ .direction = MOST_CH_RX, ++ .data_type = MOST_CH_CONTROL, ++ .num_buffers = 16, ++ .buffer_size = 64, ++ }, ++ .aim_name = "cdev", ++ .aim_param = "inic-usb-crx", ++ }, ++ { ++ .ch_name = "ep0f", ++ .cfg = { ++ .direction = MOST_CH_TX, ++ .data_type = MOST_CH_CONTROL, ++ .num_buffers = 16, ++ .buffer_size = 64, ++ }, ++ .aim_name = "cdev", ++ .aim_param = "inic-usb-ctx", ++ }, ++ /* OS81118 Async */ ++ { ++ .ch_name = "ep8e", ++ .cfg = { ++ .direction = MOST_CH_RX, ++ .data_type = MOST_CH_ASYNC, ++ .num_buffers = 20, ++ .buffer_size = 1522, ++ }, ++ .aim_name = "networking", ++ .aim_param = "inic-usb-arx", ++ }, ++ { ++ .ch_name = "ep0e", ++ .cfg = { ++ .direction = MOST_CH_TX, ++ .data_type = MOST_CH_ASYNC, ++ .num_buffers = 20, ++ .buffer_size = 1522, ++ }, ++ .aim_name = "networking", ++ .aim_param = "inic-usb-atx", ++ }, ++ /* OS81210 Control */ ++ { ++ .ch_name = "ep87", ++ .cfg = { ++ .direction = MOST_CH_RX, ++ .data_type = MOST_CH_CONTROL, ++ .num_buffers = 16, ++ .buffer_size = 64, ++ }, ++ .aim_name = "cdev", ++ .aim_param = "inic-usb-crx", ++ }, ++ { ++ .ch_name = "ep07", ++ .cfg = { ++ .direction = MOST_CH_TX, ++ .data_type = MOST_CH_CONTROL, ++ .num_buffers = 16, ++ .buffer_size = 64, ++ }, ++ .aim_name = "cdev", ++ .aim_param = "inic-usb-ctx", ++ }, ++ /* OS81210 Async */ ++ { ++ .ch_name = "ep86", ++ .cfg = { ++ .direction = MOST_CH_RX, ++ .data_type = MOST_CH_ASYNC, ++ .num_buffers = 20, ++ .buffer_size = 1522, ++ }, ++ .aim_name = "networking", ++ .aim_param = "inic-usb-arx", ++ }, ++ { ++ .ch_name = "ep06", ++ .cfg = { ++ .direction = MOST_CH_TX, ++ .data_type = MOST_CH_ASYNC, ++ .num_buffers = 20, ++ .buffer_size = 1522, ++ }, ++ .aim_name = "networking", ++ .aim_param = "inic-usb-atx", ++ }, ++ /* Streaming channels (common for all INICs) */ ++ { ++ .ch_name = "ep01", ++ .cfg = { ++ .direction = MOST_CH_TX, ++ .data_type = MOST_CH_SYNC, ++ .num_buffers = 8, ++ .buffer_size = 2 * 12 * 42, ++ .subbuffer_size = 12, ++ .packets_per_xact = 42, ++ }, ++ .aim_name = "sound", ++ .aim_param = "ep01-6ch.6x16", ++ }, ++ { ++ .ch_name = "ep02", ++ .cfg = { ++ .direction = MOST_CH_TX, ++ .data_type = MOST_CH_ISOC, ++ .num_buffers = 8, ++ .buffer_size = 40 * 188, ++ .subbuffer_size = 188, ++ .packets_per_xact = 2, ++ }, ++ .aim_name = "cdev", ++ .aim_param = "inic-usb-itx1", ++ }, ++ ++ /* sentinel */ ++ {} ++}; ++ ++static struct most_config_set config_set = { ++ .probes = config_probes ++}; ++ ++static int __init mod_init(void) ++{ ++ most_register_config_set(&config_set); ++ return 0; ++} ++ ++static void __exit mod_exit(void) ++{ ++ most_deregister_config_set(&config_set); ++} ++ ++module_init(mod_init); ++module_exit(mod_exit); ++MODULE_LICENSE("GPL"); ++MODULE_AUTHOR("Andrey Shvetsov <andrey.shvetsov@k2l.de>"); ++MODULE_DESCRIPTION("Default configuration for the MOST channels"); +diff --git a/include/mostcore.h b/include/mostcore.h +index dc87121..3c00efb 100644 +--- a/include/mostcore.h ++++ b/include/mostcore.h +@@ -145,6 +145,39 @@ struct most_channel_config { + u16 dbr_size; + }; + ++/** ++ * struct most_config_probe - matching rule, channel configuration and ++ * the optional AIM name used for the automatic configuration and linking ++ * of the channel ++ * @dev_name: optional matching device id ++ * ("usb_device 1-1:1.0," "dim2-12345678", etc.) ++ * @ch_name: matching channel name ("ep8f", "ca2", etc.) ++ * @cfg: configuration that will be applied for the found channel ++ * @aim_name: optional name of the AIM that will be linked to the channel ++ * ("cdev", "networking", "v4l", "sound") ++ * @aim_param: AIM dependent parameter (it is the character device name ++ * for the cdev AIM, PCM format for the audio AIM, etc.) ++ */ ++struct most_config_probe { ++ const char *dev_name; ++ const char *ch_name; ++ struct most_channel_config cfg; ++ const char *aim_name; ++ const char *aim_param; ++}; ++ ++/** ++ * struct most_config_set - the configuration set containing ++ * several automatic configurations for the different channels ++ * @probes: list of the matching rules and the configurations, ++ * that must be ended with the empty structure ++ * @list: list head used by the MostCore ++ */ ++struct most_config_set { ++ const struct most_config_probe *probes; ++ struct list_head list; ++}; ++ + /* + * struct mbo - MOST Buffer Object. + * @context: context for core completion handler +@@ -285,6 +318,37 @@ struct most_aim { + }; + + /** ++ * most_register_config_set - registers the configuration set ++ * ++ * @cfg_set: configuration set to be registered for the future probes ++ * ++ * The function registers the given configuration set. ++ * ++ * It is possible to register or deregister several configuration sets ++ * independently. Different configuration sets may contain the ++ * overlapped matching rules but later registered configuration set has ++ * the higher priority over the prior registered set. ++ * ++ * The only the first matched configuration is applied for each ++ * channel. ++ * ++ * The configuration for the channel is applied at the time of ++ * registration of the parent most_interface. ++ */ ++void most_register_config_set(struct most_config_set *cfg_set); ++ ++/** ++ * most_deregister_config_set - deregisters the prior registered ++ * configuration set ++ * ++ * @cfg_set: configuration set to be deregistered ++ * ++ * The calling of this function does not change the current ++ * configuration of the channels. ++ */ ++void most_deregister_config_set(struct most_config_set *cfg_set); ++ ++/** + * most_register_interface - Registers instance of the interface. + * @iface: Pointer to the interface instance description. + * +diff --git a/mostcore/core.c b/mostcore/core.c +index 9e0a352..6035cf0 100644 +--- a/mostcore/core.c ++++ b/mostcore/core.c +@@ -36,6 +36,8 @@ static struct class *most_class; + static struct device *core_dev; + static struct ida mdev_id; + static int dummy_num_buffers; ++static struct list_head config_probes; ++struct mutex config_probes_mt; /* config_probes */ + + struct most_c_aim_obj { + struct most_aim *ptr; +@@ -918,6 +920,30 @@ most_c_obj *get_channel_by_name(char *mdev, char *mdev_ch) + return c; + } + ++static int link_channel_to_aim(struct most_c_obj *c, struct most_aim *aim, ++ char *aim_param) ++{ ++ int ret; ++ struct most_aim **aim_ptr; ++ ++ if (!c->aim0.ptr) ++ aim_ptr = &c->aim0.ptr; ++ else if (!c->aim1.ptr) ++ aim_ptr = &c->aim1.ptr; ++ else ++ return -ENOSPC; ++ ++ *aim_ptr = aim; ++ ret = aim->probe_channel(c->iface, c->channel_id, ++ &c->cfg, &c->kobj, aim_param); ++ if (ret) { ++ *aim_ptr = NULL; ++ return ret; ++ } ++ ++ return 0; ++} ++ + /** + * add_link_store - store() function for add_link attribute + * @aim_obj: pointer to AIM object +@@ -946,45 +972,33 @@ static ssize_t add_link_store(struct most_aim_obj *aim_obj, + size_t len) + { + struct most_c_obj *c; +- struct most_aim **aim_ptr; + char buffer[STRING_SIZE]; + char *mdev; + char *mdev_ch; +- char *mdev_devnod; ++ char *aim_param; + char devnod_buf[STRING_SIZE]; + int ret; + size_t max_len = min_t(size_t, len + 1, STRING_SIZE); + + strlcpy(buffer, buf, max_len); + +- ret = split_string(buffer, &mdev, &mdev_ch, &mdev_devnod); ++ ret = split_string(buffer, &mdev, &mdev_ch, &aim_param); + if (ret) + return ret; + +- if (!mdev_devnod || *mdev_devnod == 0) { ++ if (!aim_param || *aim_param == 0) { + snprintf(devnod_buf, sizeof(devnod_buf), "%s-%s", mdev, + mdev_ch); +- mdev_devnod = devnod_buf; ++ aim_param = devnod_buf; + } + + c = get_channel_by_name(mdev, mdev_ch); + if (IS_ERR(c)) + return -ENODEV; + +- if (!c->aim0.ptr) +- aim_ptr = &c->aim0.ptr; +- else if (!c->aim1.ptr) +- aim_ptr = &c->aim1.ptr; +- else +- return -ENOSPC; +- +- *aim_ptr = aim_obj->driver; +- ret = aim_obj->driver->probe_channel(c->iface, c->channel_id, +- &c->cfg, &c->kobj, mdev_devnod); +- if (ret) { +- *aim_ptr = NULL; ++ ret = link_channel_to_aim(c, aim_obj->driver, aim_param); ++ if (ret) + return ret; +- } + + return len; + } +@@ -1679,6 +1693,73 @@ int most_deregister_aim(struct most_aim *aim) + } + EXPORT_SYMBOL_GPL(most_deregister_aim); + ++void most_register_config_set(struct most_config_set *cfg_set) ++{ ++ mutex_lock(&config_probes_mt); ++ list_add(&cfg_set->list, &config_probes); ++ mutex_unlock(&config_probes_mt); ++} ++EXPORT_SYMBOL(most_register_config_set); ++ ++void most_deregister_config_set(struct most_config_set *cfg_set) ++{ ++ mutex_lock(&config_probes_mt); ++ list_del(&cfg_set->list); ++ mutex_unlock(&config_probes_mt); ++} ++EXPORT_SYMBOL(most_deregister_config_set); ++ ++static int probe_aim(struct most_c_obj *c, ++ const char *aim_name, const char *aim_param) ++{ ++ struct most_aim_obj *aim_obj; ++ char buf[STRING_SIZE]; ++ ++ list_for_each_entry(aim_obj, &aim_list, list) { ++ if (!strcmp(aim_obj->driver->name, aim_name)) { ++ strlcpy(buf, aim_param ? aim_param : "", sizeof(buf)); ++ return link_channel_to_aim(c, aim_obj->driver, buf); ++ } ++ } ++ return 0; ++} ++ ++static bool probe_config_set(struct most_c_obj *c, ++ const char *dev_name, const char *ch_name, ++ const struct most_config_probe *p) ++{ ++ int err; ++ ++ for (; p->ch_name; p++) { ++ if ((p->dev_name && strcmp(dev_name, p->dev_name)) || ++ strcmp(ch_name, p->ch_name)) ++ continue; ++ ++ c->cfg = p->cfg; ++ if (p->aim_name) { ++ err = probe_aim(c, p->aim_name, p->aim_param); ++ if (err) ++ pr_err("failed to autolink %s to %s: %d\n", ++ ch_name, p->aim_name, err); ++ } ++ return true; ++ } ++ return false; ++} ++ ++static void find_configuration(struct most_c_obj *c, const char *dev_name, ++ const char *ch_name) ++{ ++ struct most_config_set *plist; ++ ++ mutex_lock(&config_probes_mt); ++ list_for_each_entry(plist, &config_probes, list) { ++ if (probe_config_set(c, dev_name, ch_name, plist->probes)) ++ break; ++ } ++ mutex_unlock(&config_probes_mt); ++} ++ + /** + * most_register_interface - registers an interface with core + * @iface: pointer to the instance of the interface description. +@@ -1777,6 +1858,7 @@ struct kobject *most_register_interface(struct most_interface *iface) + mutex_init(&c->start_mutex); + mutex_init(&c->nq_mutex); + list_add_tail(&c->list, &inst->channel_list); ++ find_configuration(c, iface->description, channel_name); + } + pr_info("registered new MOST device mdev%d (%s)\n", + inst->dev_id, iface->description); +@@ -1880,6 +1962,8 @@ static int __init most_init(void) + pr_info("init()\n"); + INIT_LIST_HEAD(&instance_list); + INIT_LIST_HEAD(&aim_list); ++ INIT_LIST_HEAD(&config_probes); ++ mutex_init(&config_probes_mt); + ida_init(&mdev_id); + + err = bus_register(&most_bus); +-- +2.7.4 + |