From f444da38ac924748de696c393327a44c4b8d727e Mon Sep 17 00:00:00 2001
From: Charles Keepax <ckeepax@opensource.cirrus.com>
Date: Wed, 17 Nov 2021 13:22:59 +0000
Subject: [PATCH] firmware: cs_dsp: Add offset to cs_dsp read/write
Git-commit: f444da38ac924748de696c393327a44c4b8d727e
Patch-mainline: v5.17-rc1
References: bsc#1203699
Provide a mechanism to access only part of a control through the cs_dsp
interface.
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20211117132300.1290-9-ckeepax@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/firmware/cirrus/cs_dsp.c | 44 ++++++++++++++++----------
include/linux/firmware/cirrus/cs_dsp.h | 6 ++--
sound/soc/codecs/wm_adsp.c | 14 ++++----
3 files changed, 39 insertions(+), 25 deletions(-)
diff --git a/drivers/firmware/cirrus/cs_dsp.c b/drivers/firmware/cirrus/cs_dsp.c
index d1bcade2efe2..5fe08de91ecd 100644
--- a/drivers/firmware/cirrus/cs_dsp.c
+++ b/drivers/firmware/cirrus/cs_dsp.c
@@ -616,7 +616,8 @@ static void cs_dsp_halo_show_fw_status(struct cs_dsp *dsp)
offs[0], offs[1], offs[2], offs[3]);
}
-static int cs_dsp_coeff_base_reg(struct cs_dsp_coeff_ctl *ctl, unsigned int *reg)
+static int cs_dsp_coeff_base_reg(struct cs_dsp_coeff_ctl *ctl, unsigned int *reg,
+ unsigned int off)
{
const struct cs_dsp_alg_region *alg_region = &ctl->alg_region;
struct cs_dsp *dsp = ctl->dsp;
@@ -629,7 +630,7 @@ static int cs_dsp_coeff_base_reg(struct cs_dsp_coeff_ctl *ctl, unsigned int *reg
return -EINVAL;
}
- *reg = dsp->ops->region_to_reg(mem, ctl->alg_region.base + ctl->offset);
+ *reg = dsp->ops->region_to_reg(mem, ctl->alg_region.base + ctl->offset + off);
return 0;
}
@@ -658,7 +659,7 @@ int cs_dsp_coeff_write_acked_control(struct cs_dsp_coeff_ctl *ctl, unsigned int
if (!dsp->running)
return -EPERM;
- ret = cs_dsp_coeff_base_reg(ctl, ®);
+ ret = cs_dsp_coeff_base_reg(ctl, ®, 0);
if (ret)
return ret;
@@ -712,14 +713,14 @@ int cs_dsp_coeff_write_acked_control(struct cs_dsp_coeff_ctl *ctl, unsigned int
EXPORT_SYMBOL_GPL(cs_dsp_coeff_write_acked_control);
static int cs_dsp_coeff_write_ctrl_raw(struct cs_dsp_coeff_ctl *ctl,
- const void *buf, size_t len)
+ unsigned int off, const void *buf, size_t len)
{
struct cs_dsp *dsp = ctl->dsp;
void *scratch;
int ret;
unsigned int reg;
- ret = cs_dsp_coeff_base_reg(ctl, ®);
+ ret = cs_dsp_coeff_base_reg(ctl, ®, off);
if (ret)
return ret;
@@ -745,6 +746,7 @@ static int cs_dsp_coeff_write_ctrl_raw(struct cs_dsp_coeff_ctl *ctl,
/**
* cs_dsp_coeff_write_ctrl() - Writes the given buffer to the given coefficient control
* @ctl: pointer to coefficient control
+ * @off: word offset at which data should be written
* @buf: the buffer to write to the given control
* @len: the length of the buffer in bytes
*
@@ -752,7 +754,8 @@ static int cs_dsp_coeff_write_ctrl_raw(struct cs_dsp_coeff_ctl *ctl,
*
* Return: Zero for success, a negative number on error.
*/
-int cs_dsp_coeff_write_ctrl(struct cs_dsp_coeff_ctl *ctl, const void *buf, size_t len)
+int cs_dsp_coeff_write_ctrl(struct cs_dsp_coeff_ctl *ctl,
+ unsigned int off, const void *buf, size_t len)
{
int ret = 0;
@@ -761,27 +764,31 @@ int cs_dsp_coeff_write_ctrl(struct cs_dsp_coeff_ctl *ctl, const void *buf, size_
if (!ctl)
return -ENOENT;
+ if (len + off * sizeof(u32) > ctl->len)
+ return -EINVAL;
+
if (ctl->flags & WMFW_CTL_FLAG_VOLATILE)
ret = -EPERM;
else if (buf != ctl->cache)
- memcpy(ctl->cache, buf, len);
+ memcpy(ctl->cache + off * sizeof(u32), buf, len);
ctl->set = 1;
if (ctl->enabled && ctl->dsp->running)
- ret = cs_dsp_coeff_write_ctrl_raw(ctl, buf, len);
+ ret = cs_dsp_coeff_write_ctrl_raw(ctl, off, buf, len);
return ret;
}
EXPORT_SYMBOL_GPL(cs_dsp_coeff_write_ctrl);
-static int cs_dsp_coeff_read_ctrl_raw(struct cs_dsp_coeff_ctl *ctl, void *buf, size_t len)
+static int cs_dsp_coeff_read_ctrl_raw(struct cs_dsp_coeff_ctl *ctl,
+ unsigned int off, void *buf, size_t len)
{
struct cs_dsp *dsp = ctl->dsp;
void *scratch;
int ret;
unsigned int reg;
- ret = cs_dsp_coeff_base_reg(ctl, ®);
+ ret = cs_dsp_coeff_base_reg(ctl, ®, off);
if (ret)
return ret;
@@ -807,6 +814,7 @@ static int cs_dsp_coeff_read_ctrl_raw(struct cs_dsp_coeff_ctl *ctl, void *buf, s
/**
* cs_dsp_coeff_read_ctrl() - Reads the given coefficient control into the given buffer
* @ctl: pointer to coefficient control
+ * @off: word offset at which data should be read
* @buf: the buffer to store to the given control
* @len: the length of the buffer in bytes
*
@@ -814,7 +822,8 @@ static int cs_dsp_coeff_read_ctrl_raw(struct cs_dsp_coeff_ctl *ctl, void *buf, s
*
* Return: Zero for success, a negative number on error.
*/
-int cs_dsp_coeff_read_ctrl(struct cs_dsp_coeff_ctl *ctl, void *buf, size_t len)
+int cs_dsp_coeff_read_ctrl(struct cs_dsp_coeff_ctl *ctl,
+ unsigned int off, void *buf, size_t len)
{
int ret = 0;
@@ -823,17 +832,20 @@ int cs_dsp_coeff_read_ctrl(struct cs_dsp_coeff_ctl *ctl, void *buf, size_t len)
if (!ctl)
return -ENOENT;
+ if (len + off * sizeof(u32) > ctl->len)
+ return -EINVAL;
+
if (ctl->flags & WMFW_CTL_FLAG_VOLATILE) {
if (ctl->enabled && ctl->dsp->running)
- return cs_dsp_coeff_read_ctrl_raw(ctl, buf, len);
+ return cs_dsp_coeff_read_ctrl_raw(ctl, off, buf, len);
else
return -EPERM;
} else {
if (!ctl->flags && ctl->enabled && ctl->dsp->running)
- ret = cs_dsp_coeff_read_ctrl_raw(ctl, ctl->cache, ctl->len);
+ ret = cs_dsp_coeff_read_ctrl_raw(ctl, 0, ctl->cache, ctl->len);
if (buf != ctl->cache)
- memcpy(buf, ctl->cache, len);
+ memcpy(buf, ctl->cache + off * sizeof(u32), len);
}
return ret;
@@ -857,7 +869,7 @@ static int cs_dsp_coeff_init_control_caches(struct cs_dsp *dsp)
* created so we don't need to do anything.
*/
if (!ctl->flags || (ctl->flags & WMFW_CTL_FLAG_READABLE)) {
- ret = cs_dsp_coeff_read_ctrl_raw(ctl, ctl->cache, ctl->len);
+ ret = cs_dsp_coeff_read_ctrl_raw(ctl, 0, ctl->cache, ctl->len);
if (ret < 0)
return ret;
}
@@ -875,7 +887,7 @@ static int cs_dsp_coeff_sync_controls(struct cs_dsp *dsp)
if (!ctl->enabled)
continue;
if (ctl->set && !(ctl->flags & WMFW_CTL_FLAG_VOLATILE)) {
- ret = cs_dsp_coeff_write_ctrl_raw(ctl, ctl->cache,
+ ret = cs_dsp_coeff_write_ctrl_raw(ctl, 0, ctl->cache,
ctl->len);
if (ret < 0)
return ret;
diff --git a/include/linux/firmware/cirrus/cs_dsp.h b/include/linux/firmware/cirrus/cs_dsp.h
index 1ad1b173417a..38b4da3ddfe4 100644
--- a/include/linux/firmware/cirrus/cs_dsp.h
+++ b/include/linux/firmware/cirrus/cs_dsp.h
@@ -232,8 +232,10 @@ void cs_dsp_init_debugfs(struct cs_dsp *dsp, struct dentry *debugfs_root);
void cs_dsp_cleanup_debugfs(struct cs_dsp *dsp);
int cs_dsp_coeff_write_acked_control(struct cs_dsp_coeff_ctl *ctl, unsigned int event_id);
-int cs_dsp_coeff_write_ctrl(struct cs_dsp_coeff_ctl *ctl, const void *buf, size_t len);
-int cs_dsp_coeff_read_ctrl(struct cs_dsp_coeff_ctl *ctl, void *buf, size_t len);
+int cs_dsp_coeff_write_ctrl(struct cs_dsp_coeff_ctl *ctl, unsigned int off,
+ const void *buf, size_t len);
+int cs_dsp_coeff_read_ctrl(struct cs_dsp_coeff_ctl *ctl, unsigned int off,
+ void *buf, size_t len);
struct cs_dsp_coeff_ctl *cs_dsp_get_ctl(struct cs_dsp *dsp, const char *name, int type,
unsigned int alg);
diff --git a/sound/soc/codecs/wm_adsp.c b/sound/soc/codecs/wm_adsp.c
index 404717e30f44..f084b093cff6 100644
--- a/sound/soc/codecs/wm_adsp.c
+++ b/sound/soc/codecs/wm_adsp.c
@@ -401,7 +401,7 @@ static int wm_coeff_put(struct snd_kcontrol *kctl,
int ret = 0;
mutex_lock(&cs_ctl->dsp->pwr_lock);
- ret = cs_dsp_coeff_write_ctrl(cs_ctl, p, cs_ctl->len);
+ ret = cs_dsp_coeff_write_ctrl(cs_ctl, 0, p, cs_ctl->len);
mutex_unlock(&cs_ctl->dsp->pwr_lock);
return ret;
@@ -421,7 +421,7 @@ static int wm_coeff_tlv_put(struct snd_kcontrol *kctl,
if (copy_from_user(cs_ctl->cache, bytes, size))
ret = -EFAULT;
else
- ret = cs_dsp_coeff_write_ctrl(cs_ctl, cs_ctl->cache, size);
+ ret = cs_dsp_coeff_write_ctrl(cs_ctl, 0, cs_ctl->cache, size);
mutex_unlock(&cs_ctl->dsp->pwr_lock);
@@ -464,7 +464,7 @@ static int wm_coeff_get(struct snd_kcontrol *kctl,
int ret;
mutex_lock(&cs_ctl->dsp->pwr_lock);
- ret = cs_dsp_coeff_read_ctrl(cs_ctl, p, cs_ctl->len);
+ ret = cs_dsp_coeff_read_ctrl(cs_ctl, 0, p, cs_ctl->len);
mutex_unlock(&cs_ctl->dsp->pwr_lock);
return ret;
@@ -481,7 +481,7 @@ static int wm_coeff_tlv_get(struct snd_kcontrol *kctl,
mutex_lock(&cs_ctl->dsp->pwr_lock);
- ret = cs_dsp_coeff_read_ctrl(cs_ctl, cs_ctl->cache, size);
+ ret = cs_dsp_coeff_read_ctrl(cs_ctl, 0, cs_ctl->cache, size);
if (!ret && copy_to_user(bytes, cs_ctl->cache, size))
ret = -EFAULT;
@@ -684,7 +684,7 @@ int wm_adsp_write_ctl(struct wm_adsp *dsp, const char *name, int type,
if (len > cs_ctl->len)
return -EINVAL;
- ret = cs_dsp_coeff_write_ctrl(cs_ctl, buf, len);
+ ret = cs_dsp_coeff_write_ctrl(cs_ctl, 0, buf, len);
if (ret)
return ret;
@@ -723,7 +723,7 @@ int wm_adsp_read_ctl(struct wm_adsp *dsp, const char *name, int type,
if (len > cs_ctl->len)
return -EINVAL;
- return cs_dsp_coeff_read_ctrl(cs_ctl, buf, len);
+ return cs_dsp_coeff_read_ctrl(cs_ctl, 0, buf, len);
}
EXPORT_SYMBOL_GPL(wm_adsp_read_ctl);
@@ -1432,7 +1432,7 @@ static int wm_adsp_buffer_parse_coeff(struct cs_dsp_coeff_ctl *cs_ctl)
int ret, i;
for (i = 0; i < 5; ++i) {
- ret = cs_dsp_coeff_read_ctrl(cs_ctl, &coeff_v1, sizeof(coeff_v1));
+ ret = cs_dsp_coeff_read_ctrl(cs_ctl, 0, &coeff_v1, sizeof(coeff_v1));
if (ret < 0)
return ret;
--
2.35.3