diff options
Diffstat (limited to 'sound/soc/codecs/sigmadsp-i2c.c')
-rw-r--r-- | sound/soc/codecs/sigmadsp-i2c.c | 52 |
1 files changed, 41 insertions, 11 deletions
diff --git a/sound/soc/codecs/sigmadsp-i2c.c b/sound/soc/codecs/sigmadsp-i2c.c index 246081a..bf6a2be 100644 --- a/sound/soc/codecs/sigmadsp-i2c.c +++ b/sound/soc/codecs/sigmadsp-i2c.c @@ -6,29 +6,59 @@ * Licensed under the GPL-2 or later. */ -#include <linux/i2c.h> #include <linux/export.h> +#include <linux/i2c.h> #include <linux/module.h> +#include <linux/slab.h> +#include <asm/unaligned.h> #include "sigmadsp.h" -static int sigma_action_write_i2c(void *control_data, - const struct sigma_action *sa, size_t len) +static int sigmadsp_write_i2c(void *control_data, + unsigned int addr, const uint8_t data[], size_t len) { - return i2c_master_send(control_data, (const unsigned char *)&sa->addr, - 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); + + return ret; } -int process_sigma_firmware(struct i2c_client *client, const char *name) +/** + * 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 sigma_firmware ssfw; + struct sigmadsp *sigmadsp; + + sigmadsp = devm_sigmadsp_init(&client->dev, ops, firmware_name); + if (IS_ERR(sigmadsp)) + return sigmadsp; - ssfw.control_data = client; - ssfw.write = sigma_action_write_i2c; + sigmadsp->control_data = client; + sigmadsp->write = sigmadsp_write_i2c; - return _process_sigma_firmware(&client->dev, &ssfw, name); + return sigmadsp; } -EXPORT_SYMBOL(process_sigma_firmware); +EXPORT_SYMBOL_GPL(devm_sigmadsp_init_i2c); MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>"); MODULE_DESCRIPTION("SigmaDSP I2C firmware loader"); |