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812 lines
19 KiB
812 lines
19 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* Load Analog Devices SigmaStudio firmware files |
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* |
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* Copyright 2009-2014 Analog Devices Inc. |
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*/ |
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|
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#include <linux/crc32.h> |
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#include <linux/firmware.h> |
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#include <linux/kernel.h> |
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#include <linux/i2c.h> |
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#include <linux/regmap.h> |
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#include <linux/module.h> |
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#include <linux/slab.h> |
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|
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#include <sound/control.h> |
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#include <sound/soc.h> |
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#include "sigmadsp.h" |
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#define SIGMA_MAGIC "ADISIGM" |
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#define SIGMA_FW_CHUNK_TYPE_DATA 0 |
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#define SIGMA_FW_CHUNK_TYPE_CONTROL 1 |
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#define SIGMA_FW_CHUNK_TYPE_SAMPLERATES 2 |
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struct sigmadsp_control { |
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struct list_head head; |
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uint32_t samplerates; |
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unsigned int addr; |
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unsigned int num_bytes; |
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const char *name; |
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struct snd_kcontrol *kcontrol; |
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bool cached; |
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uint8_t cache[]; |
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}; |
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struct sigmadsp_data { |
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struct list_head head; |
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uint32_t samplerates; |
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unsigned int addr; |
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unsigned int length; |
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uint8_t data[]; |
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}; |
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struct sigma_fw_chunk { |
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__le32 length; |
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__le32 tag; |
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__le32 samplerates; |
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} __packed; |
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struct sigma_fw_chunk_data { |
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struct sigma_fw_chunk chunk; |
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__le16 addr; |
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uint8_t data[]; |
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} __packed; |
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struct sigma_fw_chunk_control { |
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struct sigma_fw_chunk chunk; |
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__le16 type; |
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__le16 addr; |
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__le16 num_bytes; |
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const char name[]; |
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} __packed; |
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struct sigma_fw_chunk_samplerate { |
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struct sigma_fw_chunk chunk; |
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__le32 samplerates[]; |
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} __packed; |
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struct sigma_firmware_header { |
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unsigned char magic[7]; |
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u8 version; |
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__le32 crc; |
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} __packed; |
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enum { |
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SIGMA_ACTION_WRITEXBYTES = 0, |
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SIGMA_ACTION_WRITESINGLE, |
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SIGMA_ACTION_WRITESAFELOAD, |
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SIGMA_ACTION_END, |
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}; |
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struct sigma_action { |
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u8 instr; |
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u8 len_hi; |
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__le16 len; |
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__be16 addr; |
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unsigned char payload[]; |
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} __packed; |
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static int sigmadsp_write(struct sigmadsp *sigmadsp, unsigned int addr, |
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const uint8_t data[], size_t len) |
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{ |
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return sigmadsp->write(sigmadsp->control_data, addr, data, len); |
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} |
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static int sigmadsp_read(struct sigmadsp *sigmadsp, unsigned int addr, |
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uint8_t data[], size_t len) |
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{ |
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return sigmadsp->read(sigmadsp->control_data, addr, data, len); |
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} |
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static int sigmadsp_ctrl_info(struct snd_kcontrol *kcontrol, |
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struct snd_ctl_elem_info *info) |
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{ |
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struct sigmadsp_control *ctrl = (void *)kcontrol->private_value; |
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info->type = SNDRV_CTL_ELEM_TYPE_BYTES; |
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info->count = ctrl->num_bytes; |
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return 0; |
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} |
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static int sigmadsp_ctrl_write(struct sigmadsp *sigmadsp, |
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struct sigmadsp_control *ctrl, void *data) |
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{ |
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/* safeload loads up to 20 bytes in a atomic operation */ |
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if (ctrl->num_bytes <= 20 && sigmadsp->ops && sigmadsp->ops->safeload) |
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return sigmadsp->ops->safeload(sigmadsp, ctrl->addr, data, |
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ctrl->num_bytes); |
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else |
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return sigmadsp_write(sigmadsp, ctrl->addr, data, |
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ctrl->num_bytes); |
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} |
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static int sigmadsp_ctrl_put(struct snd_kcontrol *kcontrol, |
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struct snd_ctl_elem_value *ucontrol) |
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{ |
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struct sigmadsp_control *ctrl = (void *)kcontrol->private_value; |
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struct sigmadsp *sigmadsp = snd_kcontrol_chip(kcontrol); |
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uint8_t *data; |
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int ret = 0; |
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mutex_lock(&sigmadsp->lock); |
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data = ucontrol->value.bytes.data; |
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if (!(kcontrol->vd[0].access & SNDRV_CTL_ELEM_ACCESS_INACTIVE)) |
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ret = sigmadsp_ctrl_write(sigmadsp, ctrl, data); |
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if (ret == 0) { |
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memcpy(ctrl->cache, data, ctrl->num_bytes); |
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ctrl->cached = true; |
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} |
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mutex_unlock(&sigmadsp->lock); |
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return ret; |
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} |
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static int sigmadsp_ctrl_get(struct snd_kcontrol *kcontrol, |
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struct snd_ctl_elem_value *ucontrol) |
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{ |
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struct sigmadsp_control *ctrl = (void *)kcontrol->private_value; |
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struct sigmadsp *sigmadsp = snd_kcontrol_chip(kcontrol); |
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int ret = 0; |
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mutex_lock(&sigmadsp->lock); |
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if (!ctrl->cached) { |
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ret = sigmadsp_read(sigmadsp, ctrl->addr, ctrl->cache, |
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ctrl->num_bytes); |
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} |
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if (ret == 0) { |
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ctrl->cached = true; |
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memcpy(ucontrol->value.bytes.data, ctrl->cache, |
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ctrl->num_bytes); |
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} |
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mutex_unlock(&sigmadsp->lock); |
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return ret; |
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} |
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static void sigmadsp_control_free(struct snd_kcontrol *kcontrol) |
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{ |
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struct sigmadsp_control *ctrl = (void *)kcontrol->private_value; |
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ctrl->kcontrol = NULL; |
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} |
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static bool sigma_fw_validate_control_name(const char *name, unsigned int len) |
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{ |
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unsigned int i; |
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for (i = 0; i < len; i++) { |
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/* Normal ASCII characters are valid */ |
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if (name[i] < ' ' || name[i] > '~') |
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return false; |
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} |
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return true; |
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} |
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static int sigma_fw_load_control(struct sigmadsp *sigmadsp, |
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const struct sigma_fw_chunk *chunk, unsigned int length) |
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{ |
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const struct sigma_fw_chunk_control *ctrl_chunk; |
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struct sigmadsp_control *ctrl; |
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unsigned int num_bytes; |
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size_t name_len; |
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char *name; |
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int ret; |
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if (length <= sizeof(*ctrl_chunk)) |
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return -EINVAL; |
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ctrl_chunk = (const struct sigma_fw_chunk_control *)chunk; |
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name_len = length - sizeof(*ctrl_chunk); |
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if (name_len >= SNDRV_CTL_ELEM_ID_NAME_MAXLEN) |
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name_len = SNDRV_CTL_ELEM_ID_NAME_MAXLEN - 1; |
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/* Make sure there are no non-displayable characaters in the string */ |
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if (!sigma_fw_validate_control_name(ctrl_chunk->name, name_len)) |
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return -EINVAL; |
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num_bytes = le16_to_cpu(ctrl_chunk->num_bytes); |
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ctrl = kzalloc(sizeof(*ctrl) + num_bytes, GFP_KERNEL); |
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if (!ctrl) |
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return -ENOMEM; |
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name = kzalloc(name_len + 1, GFP_KERNEL); |
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if (!name) { |
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ret = -ENOMEM; |
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goto err_free_ctrl; |
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} |
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memcpy(name, ctrl_chunk->name, name_len); |
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name[name_len] = '\0'; |
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ctrl->name = name; |
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ctrl->addr = le16_to_cpu(ctrl_chunk->addr); |
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ctrl->num_bytes = num_bytes; |
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ctrl->samplerates = le32_to_cpu(chunk->samplerates); |
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list_add_tail(&ctrl->head, &sigmadsp->ctrl_list); |
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return 0; |
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err_free_ctrl: |
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kfree(ctrl); |
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return ret; |
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} |
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static int sigma_fw_load_data(struct sigmadsp *sigmadsp, |
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const struct sigma_fw_chunk *chunk, unsigned int length) |
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{ |
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const struct sigma_fw_chunk_data *data_chunk; |
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struct sigmadsp_data *data; |
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if (length <= sizeof(*data_chunk)) |
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return -EINVAL; |
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data_chunk = (struct sigma_fw_chunk_data *)chunk; |
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length -= sizeof(*data_chunk); |
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data = kzalloc(sizeof(*data) + length, GFP_KERNEL); |
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if (!data) |
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return -ENOMEM; |
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data->addr = le16_to_cpu(data_chunk->addr); |
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data->length = length; |
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data->samplerates = le32_to_cpu(chunk->samplerates); |
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memcpy(data->data, data_chunk->data, length); |
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list_add_tail(&data->head, &sigmadsp->data_list); |
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return 0; |
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} |
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static int sigma_fw_load_samplerates(struct sigmadsp *sigmadsp, |
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const struct sigma_fw_chunk *chunk, unsigned int length) |
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{ |
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const struct sigma_fw_chunk_samplerate *rate_chunk; |
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unsigned int num_rates; |
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unsigned int *rates; |
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unsigned int i; |
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rate_chunk = (const struct sigma_fw_chunk_samplerate *)chunk; |
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num_rates = (length - sizeof(*rate_chunk)) / sizeof(__le32); |
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if (num_rates > 32 || num_rates == 0) |
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return -EINVAL; |
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/* We only allow one samplerates block per file */ |
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if (sigmadsp->rate_constraints.count) |
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return -EINVAL; |
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rates = kcalloc(num_rates, sizeof(*rates), GFP_KERNEL); |
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if (!rates) |
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return -ENOMEM; |
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for (i = 0; i < num_rates; i++) |
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rates[i] = le32_to_cpu(rate_chunk->samplerates[i]); |
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sigmadsp->rate_constraints.count = num_rates; |
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sigmadsp->rate_constraints.list = rates; |
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return 0; |
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} |
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static int sigmadsp_fw_load_v2(struct sigmadsp *sigmadsp, |
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const struct firmware *fw) |
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{ |
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struct sigma_fw_chunk *chunk; |
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unsigned int length, pos; |
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int ret; |
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/* |
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* Make sure that there is at least one chunk to avoid integer |
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* underflows later on. Empty firmware is still valid though. |
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*/ |
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if (fw->size < sizeof(*chunk) + sizeof(struct sigma_firmware_header)) |
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return 0; |
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pos = sizeof(struct sigma_firmware_header); |
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while (pos < fw->size - sizeof(*chunk)) { |
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chunk = (struct sigma_fw_chunk *)(fw->data + pos); |
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length = le32_to_cpu(chunk->length); |
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if (length > fw->size - pos || length < sizeof(*chunk)) |
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return -EINVAL; |
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switch (le32_to_cpu(chunk->tag)) { |
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case SIGMA_FW_CHUNK_TYPE_DATA: |
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ret = sigma_fw_load_data(sigmadsp, chunk, length); |
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break; |
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case SIGMA_FW_CHUNK_TYPE_CONTROL: |
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ret = sigma_fw_load_control(sigmadsp, chunk, length); |
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break; |
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case SIGMA_FW_CHUNK_TYPE_SAMPLERATES: |
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ret = sigma_fw_load_samplerates(sigmadsp, chunk, length); |
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break; |
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default: |
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dev_warn(sigmadsp->dev, "Unknown chunk type: %d\n", |
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chunk->tag); |
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ret = 0; |
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break; |
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} |
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if (ret) |
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return ret; |
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/* |
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* This can not overflow since if length is larger than the |
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* maximum firmware size (0x4000000) we'll error out earilier. |
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*/ |
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pos += ALIGN(length, sizeof(__le32)); |
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} |
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return 0; |
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} |
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static inline u32 sigma_action_len(struct sigma_action *sa) |
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{ |
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return (sa->len_hi << 16) | le16_to_cpu(sa->len); |
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} |
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static size_t sigma_action_size(struct sigma_action *sa) |
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{ |
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size_t payload = 0; |
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switch (sa->instr) { |
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case SIGMA_ACTION_WRITEXBYTES: |
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case SIGMA_ACTION_WRITESINGLE: |
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case SIGMA_ACTION_WRITESAFELOAD: |
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payload = sigma_action_len(sa); |
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break; |
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default: |
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break; |
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} |
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payload = ALIGN(payload, 2); |
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return payload + sizeof(struct sigma_action); |
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} |
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/* |
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* Returns a negative error value in case of an error, 0 if processing of |
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* the firmware should be stopped after this action, 1 otherwise. |
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*/ |
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static int process_sigma_action(struct sigmadsp *sigmadsp, |
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struct sigma_action *sa) |
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{ |
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size_t len = sigma_action_len(sa); |
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struct sigmadsp_data *data; |
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pr_debug("%s: instr:%i addr:%#x len:%zu\n", __func__, |
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sa->instr, sa->addr, len); |
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switch (sa->instr) { |
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case SIGMA_ACTION_WRITEXBYTES: |
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case SIGMA_ACTION_WRITESINGLE: |
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case SIGMA_ACTION_WRITESAFELOAD: |
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if (len < 3) |
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return -EINVAL; |
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data = kzalloc(sizeof(*data) + len - 2, GFP_KERNEL); |
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if (!data) |
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return -ENOMEM; |
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data->addr = be16_to_cpu(sa->addr); |
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data->length = len - 2; |
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memcpy(data->data, sa->payload, data->length); |
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list_add_tail(&data->head, &sigmadsp->data_list); |
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break; |
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case SIGMA_ACTION_END: |
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return 0; |
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default: |
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return -EINVAL; |
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} |
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return 1; |
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} |
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static int sigmadsp_fw_load_v1(struct sigmadsp *sigmadsp, |
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const struct firmware *fw) |
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{ |
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struct sigma_action *sa; |
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size_t size, pos; |
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int ret; |
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pos = sizeof(struct sigma_firmware_header); |
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while (pos + sizeof(*sa) <= fw->size) { |
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sa = (struct sigma_action *)(fw->data + pos); |
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size = sigma_action_size(sa); |
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pos += size; |
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if (pos > fw->size || size == 0) |
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break; |
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ret = process_sigma_action(sigmadsp, sa); |
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pr_debug("%s: action returned %i\n", __func__, ret); |
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if (ret <= 0) |
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return ret; |
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} |
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if (pos != fw->size) |
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return -EINVAL; |
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return 0; |
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} |
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static void sigmadsp_firmware_release(struct sigmadsp *sigmadsp) |
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{ |
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struct sigmadsp_control *ctrl, *_ctrl; |
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struct sigmadsp_data *data, *_data; |
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list_for_each_entry_safe(ctrl, _ctrl, &sigmadsp->ctrl_list, head) { |
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kfree(ctrl->name); |
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kfree(ctrl); |
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} |
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list_for_each_entry_safe(data, _data, &sigmadsp->data_list, head) |
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kfree(data); |
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INIT_LIST_HEAD(&sigmadsp->ctrl_list); |
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INIT_LIST_HEAD(&sigmadsp->data_list); |
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} |
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static void devm_sigmadsp_release(struct device *dev, void *res) |
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{ |
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sigmadsp_firmware_release((struct sigmadsp *)res); |
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} |
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static int sigmadsp_firmware_load(struct sigmadsp *sigmadsp, const char *name) |
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{ |
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const struct sigma_firmware_header *ssfw_head; |
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const struct firmware *fw; |
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int ret; |
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u32 crc; |
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/* first load the blob */ |
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ret = request_firmware(&fw, name, sigmadsp->dev); |
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if (ret) { |
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pr_debug("%s: request_firmware() failed with %i\n", __func__, ret); |
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goto done; |
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} |
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/* then verify the header */ |
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ret = -EINVAL; |
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/* |
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* Reject too small or unreasonable large files. The upper limit has been |
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* chosen a bit arbitrarily, but it should be enough for all practical |
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* purposes and having the limit makes it easier to avoid integer |
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* overflows later in the loading process. |
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*/ |
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if (fw->size < sizeof(*ssfw_head) || fw->size >= 0x4000000) { |
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dev_err(sigmadsp->dev, "Failed to load firmware: Invalid size\n"); |
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goto done; |
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} |
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ssfw_head = (void *)fw->data; |
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if (memcmp(ssfw_head->magic, SIGMA_MAGIC, ARRAY_SIZE(ssfw_head->magic))) { |
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dev_err(sigmadsp->dev, "Failed to load firmware: Invalid magic\n"); |
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goto done; |
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} |
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crc = crc32(0, fw->data + sizeof(*ssfw_head), |
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fw->size - sizeof(*ssfw_head)); |
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pr_debug("%s: crc=%x\n", __func__, crc); |
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if (crc != le32_to_cpu(ssfw_head->crc)) { |
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dev_err(sigmadsp->dev, "Failed to load firmware: Wrong crc checksum: expected %x got %x\n", |
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le32_to_cpu(ssfw_head->crc), crc); |
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goto done; |
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} |
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switch (ssfw_head->version) { |
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case 1: |
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ret = sigmadsp_fw_load_v1(sigmadsp, fw); |
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break; |
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case 2: |
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ret = sigmadsp_fw_load_v2(sigmadsp, fw); |
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break; |
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default: |
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dev_err(sigmadsp->dev, |
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"Failed to load firmware: Invalid version %d. Supported firmware versions: 1, 2\n", |
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ssfw_head->version); |
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ret = -EINVAL; |
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break; |
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} |
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|
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if (ret) |
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sigmadsp_firmware_release(sigmadsp); |
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|
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done: |
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release_firmware(fw); |
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|
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return ret; |
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} |
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static int sigmadsp_init(struct sigmadsp *sigmadsp, struct device *dev, |
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const struct sigmadsp_ops *ops, const char *firmware_name) |
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{ |
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sigmadsp->ops = ops; |
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sigmadsp->dev = dev; |
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|
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INIT_LIST_HEAD(&sigmadsp->ctrl_list); |
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INIT_LIST_HEAD(&sigmadsp->data_list); |
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mutex_init(&sigmadsp->lock); |
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|
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return sigmadsp_firmware_load(sigmadsp, firmware_name); |
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} |
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|
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/** |
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* devm_sigmadsp_init() - Initialize SigmaDSP instance |
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* @dev: The parent device |
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* @ops: The sigmadsp_ops to use for this instance |
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* @firmware_name: Name of the firmware file to load |
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* |
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* Allocates a SigmaDSP instance and loads the specified firmware file. |
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* |
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* Returns a pointer to a struct sigmadsp on success, or a PTR_ERR() on error. |
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*/ |
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struct sigmadsp *devm_sigmadsp_init(struct device *dev, |
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const struct sigmadsp_ops *ops, const char *firmware_name) |
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{ |
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struct sigmadsp *sigmadsp; |
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int ret; |
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sigmadsp = devres_alloc(devm_sigmadsp_release, sizeof(*sigmadsp), |
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GFP_KERNEL); |
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if (!sigmadsp) |
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return ERR_PTR(-ENOMEM); |
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ret = sigmadsp_init(sigmadsp, dev, ops, firmware_name); |
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if (ret) { |
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devres_free(sigmadsp); |
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return ERR_PTR(ret); |
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} |
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devres_add(dev, sigmadsp); |
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return sigmadsp; |
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} |
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EXPORT_SYMBOL_GPL(devm_sigmadsp_init); |
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|
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static int sigmadsp_rate_to_index(struct sigmadsp *sigmadsp, unsigned int rate) |
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{ |
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unsigned int i; |
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|
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for (i = 0; i < sigmadsp->rate_constraints.count; i++) { |
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if (sigmadsp->rate_constraints.list[i] == rate) |
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return i; |
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} |
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|
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return -EINVAL; |
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} |
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|
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static unsigned int sigmadsp_get_samplerate_mask(struct sigmadsp *sigmadsp, |
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unsigned int samplerate) |
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{ |
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int samplerate_index; |
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|
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if (samplerate == 0) |
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return 0; |
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|
|
if (sigmadsp->rate_constraints.count) { |
|
samplerate_index = sigmadsp_rate_to_index(sigmadsp, samplerate); |
|
if (samplerate_index < 0) |
|
return 0; |
|
|
|
return BIT(samplerate_index); |
|
} else { |
|
return ~0; |
|
} |
|
} |
|
|
|
static bool sigmadsp_samplerate_valid(unsigned int supported, |
|
unsigned int requested) |
|
{ |
|
/* All samplerates are supported */ |
|
if (!supported) |
|
return true; |
|
|
|
return supported & requested; |
|
} |
|
|
|
static int sigmadsp_alloc_control(struct sigmadsp *sigmadsp, |
|
struct sigmadsp_control *ctrl, unsigned int samplerate_mask) |
|
{ |
|
struct snd_kcontrol_new template; |
|
struct snd_kcontrol *kcontrol; |
|
|
|
memset(&template, 0, sizeof(template)); |
|
template.iface = SNDRV_CTL_ELEM_IFACE_MIXER; |
|
template.name = ctrl->name; |
|
template.info = sigmadsp_ctrl_info; |
|
template.get = sigmadsp_ctrl_get; |
|
template.put = sigmadsp_ctrl_put; |
|
template.private_value = (unsigned long)ctrl; |
|
template.access = SNDRV_CTL_ELEM_ACCESS_READWRITE; |
|
if (!sigmadsp_samplerate_valid(ctrl->samplerates, samplerate_mask)) |
|
template.access |= SNDRV_CTL_ELEM_ACCESS_INACTIVE; |
|
|
|
kcontrol = snd_ctl_new1(&template, sigmadsp); |
|
if (!kcontrol) |
|
return -ENOMEM; |
|
|
|
kcontrol->private_free = sigmadsp_control_free; |
|
ctrl->kcontrol = kcontrol; |
|
|
|
return snd_ctl_add(sigmadsp->component->card->snd_card, kcontrol); |
|
} |
|
|
|
static void sigmadsp_activate_ctrl(struct sigmadsp *sigmadsp, |
|
struct sigmadsp_control *ctrl, unsigned int samplerate_mask) |
|
{ |
|
struct snd_card *card = sigmadsp->component->card->snd_card; |
|
struct snd_kcontrol_volatile *vd; |
|
struct snd_ctl_elem_id id; |
|
bool active; |
|
bool changed = false; |
|
|
|
active = sigmadsp_samplerate_valid(ctrl->samplerates, samplerate_mask); |
|
|
|
down_write(&card->controls_rwsem); |
|
if (!ctrl->kcontrol) { |
|
up_write(&card->controls_rwsem); |
|
return; |
|
} |
|
|
|
id = ctrl->kcontrol->id; |
|
vd = &ctrl->kcontrol->vd[0]; |
|
if (active == (bool)(vd->access & SNDRV_CTL_ELEM_ACCESS_INACTIVE)) { |
|
vd->access ^= SNDRV_CTL_ELEM_ACCESS_INACTIVE; |
|
changed = true; |
|
} |
|
up_write(&card->controls_rwsem); |
|
|
|
if (active && changed) { |
|
mutex_lock(&sigmadsp->lock); |
|
if (ctrl->cached) |
|
sigmadsp_ctrl_write(sigmadsp, ctrl, ctrl->cache); |
|
mutex_unlock(&sigmadsp->lock); |
|
} |
|
|
|
if (changed) |
|
snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_INFO, &id); |
|
} |
|
|
|
/** |
|
* sigmadsp_attach() - Attach a sigmadsp instance to a ASoC component |
|
* @sigmadsp: The sigmadsp instance to attach |
|
* @component: The component to attach to |
|
* |
|
* Typically called in the components probe callback. |
|
* |
|
* Note, once this function has been called the firmware must not be released |
|
* until after the ALSA snd_card that the component belongs to has been |
|
* disconnected, even if sigmadsp_attach() returns an error. |
|
*/ |
|
int sigmadsp_attach(struct sigmadsp *sigmadsp, |
|
struct snd_soc_component *component) |
|
{ |
|
struct sigmadsp_control *ctrl; |
|
unsigned int samplerate_mask; |
|
int ret; |
|
|
|
sigmadsp->component = component; |
|
|
|
samplerate_mask = sigmadsp_get_samplerate_mask(sigmadsp, |
|
sigmadsp->current_samplerate); |
|
|
|
list_for_each_entry(ctrl, &sigmadsp->ctrl_list, head) { |
|
ret = sigmadsp_alloc_control(sigmadsp, ctrl, samplerate_mask); |
|
if (ret) |
|
return ret; |
|
} |
|
|
|
return 0; |
|
} |
|
EXPORT_SYMBOL_GPL(sigmadsp_attach); |
|
|
|
/** |
|
* sigmadsp_setup() - Setup the DSP for the specified samplerate |
|
* @sigmadsp: The sigmadsp instance to configure |
|
* @samplerate: The samplerate the DSP should be configured for |
|
* |
|
* Loads the appropriate firmware program and parameter memory (if not already |
|
* loaded) and enables the controls for the specified samplerate. Any control |
|
* parameter changes that have been made previously will be restored. |
|
* |
|
* Returns 0 on success, a negative error code otherwise. |
|
*/ |
|
int sigmadsp_setup(struct sigmadsp *sigmadsp, unsigned int samplerate) |
|
{ |
|
struct sigmadsp_control *ctrl; |
|
unsigned int samplerate_mask; |
|
struct sigmadsp_data *data; |
|
int ret; |
|
|
|
if (sigmadsp->current_samplerate == samplerate) |
|
return 0; |
|
|
|
samplerate_mask = sigmadsp_get_samplerate_mask(sigmadsp, samplerate); |
|
if (samplerate_mask == 0) |
|
return -EINVAL; |
|
|
|
list_for_each_entry(data, &sigmadsp->data_list, head) { |
|
if (!sigmadsp_samplerate_valid(data->samplerates, |
|
samplerate_mask)) |
|
continue; |
|
ret = sigmadsp_write(sigmadsp, data->addr, data->data, |
|
data->length); |
|
if (ret) |
|
goto err; |
|
} |
|
|
|
list_for_each_entry(ctrl, &sigmadsp->ctrl_list, head) |
|
sigmadsp_activate_ctrl(sigmadsp, ctrl, samplerate_mask); |
|
|
|
sigmadsp->current_samplerate = samplerate; |
|
|
|
return 0; |
|
err: |
|
sigmadsp_reset(sigmadsp); |
|
|
|
return ret; |
|
} |
|
EXPORT_SYMBOL_GPL(sigmadsp_setup); |
|
|
|
/** |
|
* sigmadsp_reset() - Notify the sigmadsp instance that the DSP has been reset |
|
* @sigmadsp: The sigmadsp instance to reset |
|
* |
|
* Should be called whenever the DSP has been reset and parameter and program |
|
* memory need to be re-loaded. |
|
*/ |
|
void sigmadsp_reset(struct sigmadsp *sigmadsp) |
|
{ |
|
struct sigmadsp_control *ctrl; |
|
|
|
list_for_each_entry(ctrl, &sigmadsp->ctrl_list, head) |
|
sigmadsp_activate_ctrl(sigmadsp, ctrl, false); |
|
|
|
sigmadsp->current_samplerate = 0; |
|
} |
|
EXPORT_SYMBOL_GPL(sigmadsp_reset); |
|
|
|
/** |
|
* sigmadsp_restrict_params() - Applies DSP firmware specific constraints |
|
* @sigmadsp: The sigmadsp instance |
|
* @substream: The substream to restrict |
|
* |
|
* Applies samplerate constraints that may be required by the firmware Should |
|
* typically be called from the CODEC/component drivers startup callback. |
|
* |
|
* Returns 0 on success, a negative error code otherwise. |
|
*/ |
|
int sigmadsp_restrict_params(struct sigmadsp *sigmadsp, |
|
struct snd_pcm_substream *substream) |
|
{ |
|
if (sigmadsp->rate_constraints.count == 0) |
|
return 0; |
|
|
|
return snd_pcm_hw_constraint_list(substream->runtime, 0, |
|
SNDRV_PCM_HW_PARAM_RATE, &sigmadsp->rate_constraints); |
|
} |
|
EXPORT_SYMBOL_GPL(sigmadsp_restrict_params); |
|
|
|
MODULE_LICENSE("GPL");
|
|
|