/* * Copyright (c) 2011, NVIDIA Corporation. * * 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., * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ #include #include #include #include #include #include #include #include #include #include struct rfkill_gpio_data { const char *name; enum rfkill_type type; struct gpio_desc *reset_gpio; struct gpio_desc *shutdown_gpio; struct rfkill *rfkill_dev; struct clk *clk; bool clk_enabled; }; static int rfkill_gpio_set_power(void *data, bool blocked) { struct rfkill_gpio_data *rfkill = data; if (!blocked && !IS_ERR(rfkill->clk) && !rfkill->clk_enabled) clk_enable(rfkill->clk); gpiod_set_value_cansleep(rfkill->shutdown_gpio, !blocked); gpiod_set_value_cansleep(rfkill->reset_gpio, !blocked); if (blocked && !IS_ERR(rfkill->clk) && rfkill->clk_enabled) clk_disable(rfkill->clk); rfkill->clk_enabled = !blocked; return 0; } static const struct rfkill_ops rfkill_gpio_ops = { .set_block = rfkill_gpio_set_power, }; static const struct acpi_gpio_params reset_gpios = { 0, 0, false }; static const struct acpi_gpio_params shutdown_gpios = { 1, 0, false }; static const struct acpi_gpio_mapping acpi_rfkill_default_gpios[] = { { "reset-gpios", &reset_gpios, 1 }, { "shutdown-gpios", &shutdown_gpios, 1 }, { }, }; static int rfkill_gpio_acpi_probe(struct device *dev, struct rfkill_gpio_data *rfkill) { const struct acpi_device_id *id; id = acpi_match_device(dev->driver->acpi_match_table, dev); if (!id) return -ENODEV; rfkill->type = (unsigned)id->driver_data; return acpi_dev_add_driver_gpios(ACPI_COMPANION(dev), acpi_rfkill_default_gpios); } static int rfkill_gpio_probe(struct platform_device *pdev) { struct rfkill_gpio_data *rfkill; struct gpio_desc *gpio; const char *type_name; int ret; rfkill = devm_kzalloc(&pdev->dev, sizeof(*rfkill), GFP_KERNEL); if (!rfkill) return -ENOMEM; device_property_read_string(&pdev->dev, "name", &rfkill->name); device_property_read_string(&pdev->dev, "type", &type_name); if (!rfkill->name) rfkill->name = dev_name(&pdev->dev); rfkill->type = rfkill_find_type(type_name); if (ACPI_HANDLE(&pdev->dev)) { ret = rfkill_gpio_acpi_probe(&pdev->dev, rfkill); if (ret) return ret; } rfkill->clk = devm_clk_get(&pdev->dev, NULL); gpio = devm_gpiod_get_optional(&pdev->dev, "reset", GPIOD_OUT_LOW); if (IS_ERR(gpio)) return PTR_ERR(gpio); rfkill->reset_gpio = gpio; gpio = devm_gpiod_get_optional(&pdev->dev, "shutdown", GPIOD_OUT_LOW); if (IS_ERR(gpio)) return PTR_ERR(gpio); rfkill->shutdown_gpio = gpio; /* Make sure at-least one GPIO is defined for this instance */ if (!rfkill->reset_gpio && !rfkill->shutdown_gpio) { dev_err(&pdev->dev, "invalid platform data\n"); return -EINVAL; } rfkill->rfkill_dev = rfkill_alloc(rfkill->name, &pdev->dev, rfkill->type, &rfkill_gpio_ops, rfkill); if (!rfkill->rfkill_dev) return -ENOMEM; ret = rfkill_register(rfkill->rfkill_dev); if (ret < 0) return ret; platform_set_drvdata(pdev, rfkill); dev_info(&pdev->dev, "%s device registered.\n", rfkill->name); return 0; } static int rfkill_gpio_remove(struct platform_device *pdev) { struct rfkill_gpio_data *rfkill = platform_get_drvdata(pdev); rfkill_unregister(rfkill->rfkill_dev); rfkill_destroy(rfkill->rfkill_dev); acpi_dev_remove_driver_gpios(ACPI_COMPANION(&pdev->dev)); return 0; } #ifdef CONFIG_ACPI static const struct acpi_device_id rfkill_acpi_match[] = { { "BCM4752", RFKILL_TYPE_GPS }, { "LNV4752", RFKILL_TYPE_GPS }, { }, }; MODULE_DEVICE_TABLE(acpi, rfkill_acpi_match); #endif static struct platform_driver rfkill_gpio_driver = { .probe = rfkill_gpio_probe, .remove = rfkill_gpio_remove, .driver = { .name = "rfkill_gpio", .acpi_match_table = ACPI_PTR(rfkill_acpi_match), }, }; module_platform_driver(rfkill_gpio_driver); MODULE_DESCRIPTION("gpio rfkill"); MODULE_AUTHOR("NVIDIA"); MODULE_LICENSE("GPL"); /select>
authorArd Biesheuvel <ard.biesheuvel@linaro.org>2017-01-17 13:46:29 +0000
committerHerbert Xu <herbert@gondor.apana.org.au>2017-01-23 22:41:33 +0800
commit11e3b725cfc282efe9d4a354153e99d86a16af08 (patch)
tree8b5b9e0e1bcae1ab98ee652ffb7b13b05c209bd6 /include/drm/drm_irq.h
parentd6040764adcb5cb6de1489422411d701c158bb69 (diff)
crypto: arm64/aes-blk - honour iv_out requirement in CBC and CTR modes
Update the ARMv8 Crypto Extensions and the plain NEON AES implementations in CBC and CTR modes to return the next IV back to the skcipher API client. This is necessary for chaining to work correctly. Note that for CTR, this is only done if the request is a round multiple of the block size, since otherwise, chaining is impossible anyway. Cc: <stable@vger.kernel.org> # v3.16+ Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'include/drm/drm_irq.h')