/* * Load Analog Devices SigmaStudio firmware files * * Copyright 2009-2011 Analog Devices Inc. * * Licensed under the GPL-2 or later. */ #include #include #include #include #include #include "sigmadsp.h" static int sigmadsp_write_i2c(void *control_data, unsigned int addr, const uint8_t data[], size_t len) { uint8_t *buf; int ret; buf = kzalloc(2 + len, GFP_KERNEL | GFP_DMA); if (!buf) return -ENOMEM; put_unaligned_be16(addr, buf); memcpy(buf + 2, data, len); ret = i2c_master_send(control_data, buf, len + 2); kfree(buf); if (ret < 0) return ret; return 0; } static int sigmadsp_read_i2c(void *control_data, unsigned int addr, uint8_t data[], size_t len) { struct i2c_client *client = control_data; struct i2c_msg msgs[2]; uint8_t buf[2]; int ret; put_unaligned_be16(addr, buf); msgs[0].addr = client->addr; msgs[0].len = sizeof(buf); msgs[0].buf = buf; msgs[0].flags = 0; msgs[1].addr = client->addr; msgs[1].len = len; msgs[1].buf = data; msgs[1].flags = I2C_M_RD; ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs)); if (ret < 0) return ret; else if (ret != ARRAY_SIZE(msgs)) return -EIO; return 0; } /** * devm_sigmadsp_init_i2c() - Initialize SigmaDSP instance * @client: The parent I2C device * @ops: The sigmadsp_ops to use for this instance * @firmware_name: Name of the firmware file to load * * Allocates a SigmaDSP instance and loads the specified firmware file. * * Returns a pointer to a struct sigmadsp on success, or a PTR_ERR() on error. */ struct sigmadsp *devm_sigmadsp_init_i2c(struct i2c_client *client, const struct sigmadsp_ops *ops, const char *firmware_name) { struct sigmadsp *sigmadsp; sigmadsp = devm_sigmadsp_init(&client->dev, ops, firmware_name); if (IS_ERR(sigmadsp)) return sigmadsp; sigmadsp->control_data = client; sigmadsp->write = sigmadsp_write_i2c; sigmadsp->read = sigmadsp_read_i2c; return sigmadsp; } EXPORT_SYMBOL_GPL(devm_sigmadsp_init_i2c); MODULE_AUTHOR("Lars-Peter Clausen "); MODULE_DESCRIPTION("SigmaDSP I2C firmware loader"); MODULE_LICENSE("GPL"); ove&id=0c4881ced8d2e380d0544f1e7e3249d7bbc45979'>diff
path: root/sound/soc/codecs/adav80x.h
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authorStanislaw Gruszka <sgruszka@redhat.com>2017-01-29 12:40:52 +0100
committerKalle Valo <kvalo@codeaurora.org>2017-01-31 09:08:52 +0200
commit33e962c8871f015f5c8978384553dddcf5b81b22 (patch)
tree43aff96c2ee21d9e0fa2018457778a4de52053cd /drivers/usb/gadget/legacy/Kconfig
parent575ddce0507789bf9830d089557d2199d2f91865 (diff)
rt2x00: fix clk_get call
clk_get() takes two arguments and might return ERR_PTR(), so we have to nullify pointer on that case, to do not break further call to clk_get_rate(). Reported-by: Felix Fietkau <nbd@nbd.name> Fixes: 34db70b92fae ("rt2x00: add copy of clk for soc devices") Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Diffstat (limited to 'drivers/usb/gadget/legacy/Kconfig')