From: Mohammed Shafi Shajakhan <[email protected]>
spectral_bin length (number of bins per fft sample) is usually
a value where (2^n = value), n is an integer. All of the QCA99X0
family of chipsets seems to report a spectral_bin length of
2^n + 'm' bytes, where m = 4, 12 based on the chipset. This 'm'
bytes seems to carry some radar related info which is currenly
discarded only for 'bin_len = 68' bytes. Extend this discarding of
irrelevant 'bin_len' for QCA9984, QCA9888, IPQ4019 as well by
introducing a hardware parameter 'spectral_bin_discard'. Also
for QCA988X based family of chipsets which doesn't seem to have this
issue and also for some of the hardware which I have not tested
like QCA6174/QCA9377 the existing behaviour is retained as it is.
Signed-off-by: Mohammed Shafi Shajakhan <[email protected]>
---
drivers/net/wireless/ath/ath10k/core.c | 12 ++++++++++++
drivers/net/wireless/ath/ath10k/hw.h | 3 +++
drivers/net/wireless/ath/ath10k/spectral.c | 25 +++++++++++++++++--------
3 files changed, 32 insertions(+), 8 deletions(-)
diff --git a/drivers/net/wireless/ath/ath10k/core.c b/drivers/net/wireless/ath/ath10k/core.c
index 5736f79..b543c84 100644
--- a/drivers/net/wireless/ath/ath10k/core.c
+++ b/drivers/net/wireless/ath/ath10k/core.c
@@ -71,6 +71,7 @@
},
.hw_ops = &qca988x_ops,
.decap_align_bytes = 4,
+ .spectral_bin_discard = 0,
},
{
.id = QCA9887_HW_1_0_VERSION,
@@ -91,6 +92,7 @@
},
.hw_ops = &qca988x_ops,
.decap_align_bytes = 4,
+ .spectral_bin_discard = 0,
},
{
.id = QCA6174_HW_2_1_VERSION,
@@ -110,6 +112,7 @@
},
.hw_ops = &qca988x_ops,
.decap_align_bytes = 4,
+ .spectral_bin_discard = 0,
},
{
.id = QCA6174_HW_2_1_VERSION,
@@ -129,6 +132,7 @@
},
.hw_ops = &qca988x_ops,
.decap_align_bytes = 4,
+ .spectral_bin_discard = 0,
},
{
.id = QCA6174_HW_3_0_VERSION,
@@ -148,6 +152,7 @@
},
.hw_ops = &qca988x_ops,
.decap_align_bytes = 4,
+ .spectral_bin_discard = 0,
},
{
.id = QCA6174_HW_3_2_VERSION,
@@ -168,6 +173,7 @@
},
.hw_ops = &qca988x_ops,
.decap_align_bytes = 4,
+ .spectral_bin_discard = 0,
},
{
.id = QCA99X0_HW_2_0_DEV_VERSION,
@@ -193,6 +199,7 @@
.sw_decrypt_mcast_mgmt = true,
.hw_ops = &qca99x0_ops,
.decap_align_bytes = 1,
+ .spectral_bin_discard = 4,
},
{
.id = QCA9984_HW_1_0_DEV_VERSION,
@@ -219,6 +226,7 @@
.sw_decrypt_mcast_mgmt = true,
.hw_ops = &qca99x0_ops,
.decap_align_bytes = 1,
+ .spectral_bin_discard = 12,
},
{
.id = QCA9888_HW_2_0_DEV_VERSION,
@@ -244,6 +252,7 @@
.sw_decrypt_mcast_mgmt = true,
.hw_ops = &qca99x0_ops,
.decap_align_bytes = 1,
+ .spectral_bin_discard = 12,
},
{
.id = QCA9377_HW_1_0_DEV_VERSION,
@@ -263,6 +272,7 @@
},
.hw_ops = &qca988x_ops,
.decap_align_bytes = 4,
+ .spectral_bin_discard = 0,
},
{
.id = QCA9377_HW_1_1_DEV_VERSION,
@@ -282,6 +292,7 @@
},
.hw_ops = &qca988x_ops,
.decap_align_bytes = 4,
+ .spectral_bin_discard = 0,
},
{
.id = QCA4019_HW_1_0_DEV_VERSION,
@@ -308,6 +319,7 @@
.sw_decrypt_mcast_mgmt = true,
.hw_ops = &qca99x0_ops,
.decap_align_bytes = 1,
+ .spectral_bin_discard = 4,
},
};
diff --git a/drivers/net/wireless/ath/ath10k/hw.h b/drivers/net/wireless/ath/ath10k/hw.h
index f0fda0f..8a0f9db 100644
--- a/drivers/net/wireless/ath/ath10k/hw.h
+++ b/drivers/net/wireless/ath/ath10k/hw.h
@@ -416,6 +416,9 @@ struct ath10k_hw_params {
/* Number of bytes used for alignment in rx_hdr_status of rx desc. */
int decap_align_bytes;
+
+ /* Number of bytes to be discarded for each FFT sample */
+ int spectral_bin_discard;
};
struct htt_rx_desc;
diff --git a/drivers/net/wireless/ath/ath10k/spectral.c b/drivers/net/wireless/ath/ath10k/spectral.c
index c061d69..3fd5d7d 100644
--- a/drivers/net/wireless/ath/ath10k/spectral.c
+++ b/drivers/net/wireless/ath/ath10k/spectral.c
@@ -56,6 +56,21 @@ static uint8_t get_max_exp(s8 max_index, u16 max_magnitude, size_t bin_len,
return max_exp;
}
+static inline size_t ath10k_spectral_fix_bin_size(struct ath10k *ar,
+ size_t bin_len)
+{
+ /* some chipsets reports bin size as 2^n bytes + 'm' bytes in
+ * report mode 2. First 2^n bytes carries inband tones and last
+ * 'm' bytes carries band edge detection data mainly used in
+ * radar detection purpose. Strip last 'm' bytes to make bin size
+ * as a valid one. 'm' can take possible values of 4, 12.
+ */
+ if (!is_power_of_2(bin_len))
+ bin_len -= ar->hw_params.spectral_bin_discard;
+
+ return bin_len;
+}
+
int ath10k_spectral_process_fft(struct ath10k *ar,
struct wmi_phyerr_ev_arg *phyerr,
const struct phyerr_fft_report *fftr,
@@ -70,17 +85,11 @@ int ath10k_spectral_process_fft(struct ath10k *ar,
fft_sample = (struct fft_sample_ath10k *)&buf;
+ bin_len = ath10k_spectral_fix_bin_size(ar, bin_len);
+
if (bin_len < 64 || bin_len > SPECTRAL_ATH10K_MAX_NUM_BINS)
return -EINVAL;
- /* qca99x0 reports bin size as 68 bytes (64 bytes + 4 bytes) in
- * report mode 2. First 64 bytes carries inband tones (-32 to +31)
- * and last 4 byte carries band edge detection data (+32) mainly
- * used in radar detection purpose. Strip last 4 byte to make bin
- * size is valid one.
- */
- if (bin_len == 68)
- bin_len -= 4;
reg0 = __le32_to_cpu(fftr->reg0);
reg1 = __le32_to_cpu(fftr->reg1);
--
1.9.1
hi!
For reference, would you mind pulling out what hte format of the edge
detection dword is?
Thanks!
-adrian
On 10 April 2017 at 07:26, Mohammed Shafi Shajakhan
<[email protected]> wrote:
> From: Mohammed Shafi Shajakhan <[email protected]>
>
> spectral_bin length (number of bins per fft sample) is usually
> a value where (2^n = value), n is an integer. All of the QCA99X0
> family of chipsets seems to report a spectral_bin length of
> 2^n + 'm' bytes, where m = 4, 12 based on the chipset. This 'm'
> bytes seems to carry some radar related info which is currenly
> discarded only for 'bin_len = 68' bytes. Extend this discarding of
> irrelevant 'bin_len' for QCA9984, QCA9888, IPQ4019 as well by
> introducing a hardware parameter 'spectral_bin_discard'. Also
> for QCA988X based family of chipsets which doesn't seem to have this
> issue and also for some of the hardware which I have not tested
> like QCA6174/QCA9377 the existing behaviour is retained as it is.
>
> Signed-off-by: Mohammed Shafi Shajakhan <[email protected]>
> ---
>
> drivers/net/wireless/ath/ath10k/core.c | 12 ++++++++++++
> drivers/net/wireless/ath/ath10k/hw.h | 3 +++
> drivers/net/wireless/ath/ath10k/spectral.c | 25 +++++++++++++++++--------
> 3 files changed, 32 insertions(+), 8 deletions(-)
>
> diff --git a/drivers/net/wireless/ath/ath10k/core.c b/drivers/net/wireless/ath/ath10k/core.c
> index 5736f79..b543c84 100644
> --- a/drivers/net/wireless/ath/ath10k/core.c
> +++ b/drivers/net/wireless/ath/ath10k/core.c
> @@ -71,6 +71,7 @@
> },
> .hw_ops = &qca988x_ops,
> .decap_align_bytes = 4,
> + .spectral_bin_discard = 0,
> },
> {
> .id = QCA9887_HW_1_0_VERSION,
> @@ -91,6 +92,7 @@
> },
> .hw_ops = &qca988x_ops,
> .decap_align_bytes = 4,
> + .spectral_bin_discard = 0,
> },
> {
> .id = QCA6174_HW_2_1_VERSION,
> @@ -110,6 +112,7 @@
> },
> .hw_ops = &qca988x_ops,
> .decap_align_bytes = 4,
> + .spectral_bin_discard = 0,
> },
> {
> .id = QCA6174_HW_2_1_VERSION,
> @@ -129,6 +132,7 @@
> },
> .hw_ops = &qca988x_ops,
> .decap_align_bytes = 4,
> + .spectral_bin_discard = 0,
> },
> {
> .id = QCA6174_HW_3_0_VERSION,
> @@ -148,6 +152,7 @@
> },
> .hw_ops = &qca988x_ops,
> .decap_align_bytes = 4,
> + .spectral_bin_discard = 0,
> },
> {
> .id = QCA6174_HW_3_2_VERSION,
> @@ -168,6 +173,7 @@
> },
> .hw_ops = &qca988x_ops,
> .decap_align_bytes = 4,
> + .spectral_bin_discard = 0,
> },
> {
> .id = QCA99X0_HW_2_0_DEV_VERSION,
> @@ -193,6 +199,7 @@
> .sw_decrypt_mcast_mgmt = true,
> .hw_ops = &qca99x0_ops,
> .decap_align_bytes = 1,
> + .spectral_bin_discard = 4,
> },
> {
> .id = QCA9984_HW_1_0_DEV_VERSION,
> @@ -219,6 +226,7 @@
> .sw_decrypt_mcast_mgmt = true,
> .hw_ops = &qca99x0_ops,
> .decap_align_bytes = 1,
> + .spectral_bin_discard = 12,
> },
> {
> .id = QCA9888_HW_2_0_DEV_VERSION,
> @@ -244,6 +252,7 @@
> .sw_decrypt_mcast_mgmt = true,
> .hw_ops = &qca99x0_ops,
> .decap_align_bytes = 1,
> + .spectral_bin_discard = 12,
> },
> {
> .id = QCA9377_HW_1_0_DEV_VERSION,
> @@ -263,6 +272,7 @@
> },
> .hw_ops = &qca988x_ops,
> .decap_align_bytes = 4,
> + .spectral_bin_discard = 0,
> },
> {
> .id = QCA9377_HW_1_1_DEV_VERSION,
> @@ -282,6 +292,7 @@
> },
> .hw_ops = &qca988x_ops,
> .decap_align_bytes = 4,
> + .spectral_bin_discard = 0,
> },
> {
> .id = QCA4019_HW_1_0_DEV_VERSION,
> @@ -308,6 +319,7 @@
> .sw_decrypt_mcast_mgmt = true,
> .hw_ops = &qca99x0_ops,
> .decap_align_bytes = 1,
> + .spectral_bin_discard = 4,
> },
> };
>
> diff --git a/drivers/net/wireless/ath/ath10k/hw.h b/drivers/net/wireless/ath/ath10k/hw.h
> index f0fda0f..8a0f9db 100644
> --- a/drivers/net/wireless/ath/ath10k/hw.h
> +++ b/drivers/net/wireless/ath/ath10k/hw.h
> @@ -416,6 +416,9 @@ struct ath10k_hw_params {
>
> /* Number of bytes used for alignment in rx_hdr_status of rx desc. */
> int decap_align_bytes;
> +
> + /* Number of bytes to be discarded for each FFT sample */
> + int spectral_bin_discard;
> };
>
> struct htt_rx_desc;
> diff --git a/drivers/net/wireless/ath/ath10k/spectral.c b/drivers/net/wireless/ath/ath10k/spectral.c
> index c061d69..3fd5d7d 100644
> --- a/drivers/net/wireless/ath/ath10k/spectral.c
> +++ b/drivers/net/wireless/ath/ath10k/spectral.c
> @@ -56,6 +56,21 @@ static uint8_t get_max_exp(s8 max_index, u16 max_magnitude, size_t bin_len,
> return max_exp;
> }
>
> +static inline size_t ath10k_spectral_fix_bin_size(struct ath10k *ar,
> + size_t bin_len)
> +{
> + /* some chipsets reports bin size as 2^n bytes + 'm' bytes in
> + * report mode 2. First 2^n bytes carries inband tones and last
> + * 'm' bytes carries band edge detection data mainly used in
> + * radar detection purpose. Strip last 'm' bytes to make bin size
> + * as a valid one. 'm' can take possible values of 4, 12.
> + */
> + if (!is_power_of_2(bin_len))
> + bin_len -= ar->hw_params.spectral_bin_discard;
> +
> + return bin_len;
> +}
> +
> int ath10k_spectral_process_fft(struct ath10k *ar,
> struct wmi_phyerr_ev_arg *phyerr,
> const struct phyerr_fft_report *fftr,
> @@ -70,17 +85,11 @@ int ath10k_spectral_process_fft(struct ath10k *ar,
>
> fft_sample = (struct fft_sample_ath10k *)&buf;
>
> + bin_len = ath10k_spectral_fix_bin_size(ar, bin_len);
> +
> if (bin_len < 64 || bin_len > SPECTRAL_ATH10K_MAX_NUM_BINS)
> return -EINVAL;
>
> - /* qca99x0 reports bin size as 68 bytes (64 bytes + 4 bytes) in
> - * report mode 2. First 64 bytes carries inband tones (-32 to +31)
> - * and last 4 byte carries band edge detection data (+32) mainly
> - * used in radar detection purpose. Strip last 4 byte to make bin
> - * size is valid one.
> - */
> - if (bin_len == 68)
> - bin_len -= 4;
>
> reg0 = __le32_to_cpu(fftr->reg0);
> reg1 = __le32_to_cpu(fftr->reg1);
> --
> 1.9.1
>
Hello Adrian,=0A=
=0A=
For reference, would you mind pulling out what hte format of the edge=0A=
detection dword is?=0A=
=0A=
[shafi] Sorry I did not dig into the DWORD carrying some radar related info=
,=0A=
as this gets discarded anyway for spectral processing. If you think the dis=
carded=0A=
data is going to be useful in some way ??, let me get the dump for you. But=
feel=0A=
free to experiment with this patch !=0A=
=0A=
This is anyway needed for fixing spectral scan ...=0A=
=0A=
If you look into this patch more closely it just extends what Raja had fixe=
d=0A=
long time back for QCA99X0 alone=0A=
https://patchwork.kernel.org/patch/7040681/=0A=
=0A=
regards,=0A=
shafi=0A=
=0A=
=0A=
On 10 April 2017 at 07:26, Mohammed Shafi Shajakhan=0A=
<[email protected]> wrote:=0A=
> From: Mohammed Shafi Shajakhan <[email protected]>=0A=
>=0A=
> spectral_bin length (number of bins per fft sample) is usually=0A=
> a value where (2^n =3D value), n is an integer. All of the QCA99X0=0A=
> family of chipsets seems to report a spectral_bin length of=0A=
> 2^n + 'm' bytes, where m =3D 4, 12 based on the chipset. This 'm'=0A=
> bytes seems to carry some radar related info which is currenly=0A=
> discarded only for 'bin_len =3D 68' bytes. Extend this discarding of=0A=
> irrelevant 'bin_len' for QCA9984, QCA9888, IPQ4019 as well by=0A=
> introducing a hardware parameter 'spectral_bin_discard'. Also=0A=
> for QCA988X based family of chipsets which doesn't seem to have this=0A=
> issue and also for some of the hardware which I have not tested=0A=
> like QCA6174/QCA9377 the existing behaviour is retained as it is.=0A=
>=0A=
> Signed-off-by: Mohammed Shafi Shajakhan <[email protected]>=0A=
> ---=0A=
>=0A=
> drivers/net/wireless/ath/ath10k/core.c | 12 ++++++++++++=0A=
> drivers/net/wireless/ath/ath10k/hw.h | 3 +++=0A=
> drivers/net/wireless/ath/ath10k/spectral.c | 25 +++++++++++++++++-------=
-=0A=
> 3 files changed, 32 insertions(+), 8 deletions(-)=0A=
>=0A=
> diff --git a/drivers/net/wireless/ath/ath10k/core.c b/drivers/net/wireles=
s/ath/ath10k/core.c=0A=
> index 5736f79..b543c84 100644=0A=
> --- a/drivers/net/wireless/ath/ath10k/core.c=0A=
> +++ b/drivers/net/wireless/ath/ath10k/core.c=0A=
> @@ -71,6 +71,7 @@=0A=
> },=0A=
> .hw_ops =3D &qca988x_ops,=0A=
> .decap_align_bytes =3D 4,=0A=
> + .spectral_bin_discard =3D 0,=0A=
> },=0A=
> {=0A=
> .id =3D QCA9887_HW_1_0_VERSION,=0A=
> @@ -91,6 +92,7 @@=0A=
> },=0A=
> .hw_ops =3D &qca988x_ops,=0A=
> .decap_align_bytes =3D 4,=0A=
> + .spectral_bin_discard =3D 0,=0A=
> },=0A=
> {=0A=
> .id =3D QCA6174_HW_2_1_VERSION,=0A=
> @@ -110,6 +112,7 @@=0A=
> },=0A=
> .hw_ops =3D &qca988x_ops,=0A=
> .decap_align_bytes =3D 4,=0A=
> + .spectral_bin_discard =3D 0,=0A=
> },=0A=
> {=0A=
> .id =3D QCA6174_HW_2_1_VERSION,=0A=
> @@ -129,6 +132,7 @@=0A=
> },=0A=
> .hw_ops =3D &qca988x_ops,=0A=
> .decap_align_bytes =3D 4,=0A=
> + .spectral_bin_discard =3D 0,=0A=
> },=0A=
> {=0A=
> .id =3D QCA6174_HW_3_0_VERSION,=0A=
> @@ -148,6 +152,7 @@=0A=
> },=0A=
> .hw_ops =3D &qca988x_ops,=0A=
> .decap_align_bytes =3D 4,=0A=
> + .spectral_bin_discard =3D 0,=0A=
> },=0A=
> {=0A=
> .id =3D QCA6174_HW_3_2_VERSION,=0A=
> @@ -168,6 +173,7 @@=0A=
> },=0A=
> .hw_ops =3D &qca988x_ops,=0A=
> .decap_align_bytes =3D 4,=0A=
> + .spectral_bin_discard =3D 0,=0A=
> },=0A=
> {=0A=
> .id =3D QCA99X0_HW_2_0_DEV_VERSION,=0A=
> @@ -193,6 +199,7 @@=0A=
> .sw_decrypt_mcast_mgmt =3D true,=0A=
> .hw_ops =3D &qca99x0_ops,=0A=
> .decap_align_bytes =3D 1,=0A=
> + .spectral_bin_discard =3D 4,=0A=
> },=0A=
> {=0A=
> .id =3D QCA9984_HW_1_0_DEV_VERSION,=0A=
> @@ -219,6 +226,7 @@=0A=
> .sw_decrypt_mcast_mgmt =3D true,=0A=
> .hw_ops =3D &qca99x0_ops,=0A=
> .decap_align_bytes =3D 1,=0A=
> + .spectral_bin_discard =3D 12,=0A=
> },=0A=
> {=0A=
> .id =3D QCA9888_HW_2_0_DEV_VERSION,=0A=
> @@ -244,6 +252,7 @@=0A=
> .sw_decrypt_mcast_mgmt =3D true,=0A=
> .hw_ops =3D &qca99x0_ops,=0A=
> .decap_align_bytes =3D 1,=0A=
> + .spectral_bin_discard =3D 12,=0A=
> },=0A=
> {=0A=
> .id =3D QCA9377_HW_1_0_DEV_VERSION,=0A=
> @@ -263,6 +272,7 @@=0A=
> },=0A=
> .hw_ops =3D &qca988x_ops,=0A=
> .decap_align_bytes =3D 4,=0A=
> + .spectral_bin_discard =3D 0,=0A=
> },=0A=
> {=0A=
> .id =3D QCA9377_HW_1_1_DEV_VERSION,=0A=
> @@ -282,6 +292,7 @@=0A=
> },=0A=
> .hw_ops =3D &qca988x_ops,=0A=
> .decap_align_bytes =3D 4,=0A=
> + .spectral_bin_discard =3D 0,=0A=
> },=0A=
> {=0A=
> .id =3D QCA4019_HW_1_0_DEV_VERSION,=0A=
> @@ -308,6 +319,7 @@=0A=
> .sw_decrypt_mcast_mgmt =3D true,=0A=
> .hw_ops =3D &qca99x0_ops,=0A=
> .decap_align_bytes =3D 1,=0A=
> + .spectral_bin_discard =3D 4,=0A=
> },=0A=
> };=0A=
>=0A=
> diff --git a/drivers/net/wireless/ath/ath10k/hw.h b/drivers/net/wireless/=
ath/ath10k/hw.h=0A=
> index f0fda0f..8a0f9db 100644=0A=
> --- a/drivers/net/wireless/ath/ath10k/hw.h=0A=
> +++ b/drivers/net/wireless/ath/ath10k/hw.h=0A=
> @@ -416,6 +416,9 @@ struct ath10k_hw_params {=0A=
>=0A=
> /* Number of bytes used for alignment in rx_hdr_status of rx desc=
. */=0A=
> int decap_align_bytes;=0A=
> +=0A=
> + /* Number of bytes to be discarded for each FFT sample */=0A=
> + int spectral_bin_discard;=0A=
> };=0A=
>=0A=
> struct htt_rx_desc;=0A=
> diff --git a/drivers/net/wireless/ath/ath10k/spectral.c b/drivers/net/wir=
eless/ath/ath10k/spectral.c=0A=
> index c061d69..3fd5d7d 100644=0A=
> --- a/drivers/net/wireless/ath/ath10k/spectral.c=0A=
> +++ b/drivers/net/wireless/ath/ath10k/spectral.c=0A=
> @@ -56,6 +56,21 @@ static uint8_t get_max_exp(s8 max_index, u16 max_magni=
tude, size_t bin_len,=0A=
> return max_exp;=0A=
> }=0A=
>=0A=
> +static inline size_t ath10k_spectral_fix_bin_size(struct ath10k *ar,=0A=
> + size_t bin_len)=0A=
> +{=0A=
> + /* some chipsets reports bin size as 2^n bytes + 'm' bytes in=0A=
> + * report mode 2. First 2^n bytes carries inband tones and last=
=0A=
> + * 'm' bytes carries band edge detection data mainly used in=0A=
> + * radar detection purpose. Strip last 'm' bytes to make bin size=
=0A=
> + * as a valid one. 'm' can take possible values of 4, 12.=0A=
> + */=0A=
> + if (!is_power_of_2(bin_len))=0A=
> + bin_len -=3D ar->hw_params.spectral_bin_discard;=0A=
> +=0A=
> + return bin_len;=0A=
> +}=0A=
> +=0A=
> int ath10k_spectral_process_fft(struct ath10k *ar,=0A=
> struct wmi_phyerr_ev_arg *phyerr,=0A=
> const struct phyerr_fft_report *fftr,=0A=
> @@ -70,17 +85,11 @@ int ath10k_spectral_process_fft(struct ath10k *ar,=0A=
>=0A=
> fft_sample =3D (struct fft_sample_ath10k *)&buf;=0A=
>=0A=
> + bin_len =3D ath10k_spectral_fix_bin_size(ar, bin_len);=0A=
> +=0A=
> if (bin_len < 64 || bin_len > SPECTRAL_ATH10K_MAX_NUM_BINS)=0A=
> return -EINVAL;=0A=
>=0A=
> - /* qca99x0 reports bin size as 68 bytes (64 bytes + 4 bytes) in=
=0A=
> - * report mode 2. First 64 bytes carries inband tones (-32 to +31=
)=0A=
> - * and last 4 byte carries band edge detection data (+32) mainly=
=0A=
> - * used in radar detection purpose. Strip last 4 byte to make bin=
=0A=
> - * size is valid one.=0A=
> - */=0A=
> - if (bin_len =3D=3D 68)=0A=
> - bin_len -=3D 4;=0A=
>=0A=
> reg0 =3D __le32_to_cpu(fftr->reg0);=0A=
> reg1 =3D __le32_to_cpu(fftr->reg1);=0A=
> --=0A=
> 1.9.1=0A=
>=0A=