netdev - Re: [PATCH 4/5] b43: Use common cordic algorithm from kernel lib

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Date:   Sat, 3 Nov 2018 12:37:20 -0500
From:   Larry Finger <Larry.Finger@...inger.net>
To:     Priit Laes <plaes@...es.org>, linux-kernel@...r.kernel.org
Cc:     netdev@...r.kernel.org, linux-wireless@...r.kernel.org,
        "David S. Miller" <davem@...emloft.net>,
        Kalle Valo <kvalo@...eaurora.org>, b43-dev@...ts.infradead.org
Subject: Re: [PATCH 4/5] b43: Use common cordic algorithm from kernel lib

On 11/3/18 4:59 AM, Priit Laes wrote:
> Signed-off-by: Priit Laes <plaes@...es.org>

Where is the commit message? The stuff in the cover letter (Patch 0/N) never 
makes it to the git repository. You must have a message in each of the 
individual patches.

NACK.

Larry

> ---
>   drivers/net/wireless/broadcom/b43/Kconfig  |  1 +
>   drivers/net/wireless/broadcom/b43/phy_lp.c | 13 +++++++------
>   drivers/net/wireless/broadcom/b43/phy_n.c  | 13 +++++++------
>   3 files changed, 15 insertions(+), 12 deletions(-)
> 
> diff --git a/drivers/net/wireless/broadcom/b43/Kconfig b/drivers/net/wireless/broadcom/b43/Kconfig
> index fba8560..3e41457 100644
> --- a/drivers/net/wireless/broadcom/b43/Kconfig
> +++ b/drivers/net/wireless/broadcom/b43/Kconfig
> @@ -4,6 +4,7 @@ config B43
>   	select BCMA if B43_BCMA
>   	select SSB if B43_SSB
>   	select FW_LOADER
> +	select CORDIC
>   	---help---
>   	  b43 is a driver for the Broadcom 43xx series wireless devices.
>   
> diff --git a/drivers/net/wireless/broadcom/b43/phy_lp.c b/drivers/net/wireless/broadcom/b43/phy_lp.c
> index 6922cbb..1718e3b 100644
> --- a/drivers/net/wireless/broadcom/b43/phy_lp.c
> +++ b/drivers/net/wireless/broadcom/b43/phy_lp.c
> @@ -23,6 +23,7 @@
>   
>   */
>   
> +#include <linux/cordic.h>
>   #include <linux/slab.h>
>   
>   #include "b43.h"
> @@ -1780,9 +1781,9 @@ static void lpphy_start_tx_tone(struct b43_wldev *dev, s32 freq, u16 max)
>   {
>   	struct b43_phy_lp *lpphy = dev->phy.lp;
>   	u16 buf[64];
> -	int i, samples = 0, angle = 0;
> +	int i, samples = 0, theta = 0;
>   	int rotation = (((36 * freq) / 20) << 16) / 100;
> -	struct b43_c32 sample;
> +	struct cordic_iq sample;
>   
>   	lpphy->tx_tone_freq = freq;
>   
> @@ -1798,10 +1799,10 @@ static void lpphy_start_tx_tone(struct b43_wldev *dev, s32 freq, u16 max)
>   	}
>   
>   	for (i = 0; i < samples; i++) {
> -		sample = b43_cordic(angle);
> -		angle += rotation;
> -		buf[i] = CORDIC_CONVERT((sample.i * max) & 0xFF) << 8;
> -		buf[i] |= CORDIC_CONVERT((sample.q * max) & 0xFF);
> +		sample = cordic_calc_iq(theta);
> +		theta += rotation;
> +		buf[i] = CORDIC_FLOAT((sample.i * max) & 0xFF) << 8;
> +		buf[i] |= CORDIC_FLOAT((sample.q * max) & 0xFF);
>   	}
>   
>   	b43_lptab_write_bulk(dev, B43_LPTAB16(5, 0), samples, buf);
> diff --git a/drivers/net/wireless/broadcom/b43/phy_n.c b/drivers/net/wireless/broadcom/b43/phy_n.c
> index 44ab080..1f9378a 100644
> --- a/drivers/net/wireless/broadcom/b43/phy_n.c
> +++ b/drivers/net/wireless/broadcom/b43/phy_n.c
> @@ -23,6 +23,7 @@
>   
>   */
>   
> +#include <linux/cordic.h>
>   #include <linux/delay.h>
>   #include <linux/slab.h>
>   #include <linux/types.h>
> @@ -1513,7 +1514,7 @@ static void b43_radio_init2055(struct b43_wldev *dev)
>   
>   /* http://bcm-v4.sipsolutions.net/802.11/PHY/N/LoadSampleTable */
>   static int b43_nphy_load_samples(struct b43_wldev *dev,
> -					struct b43_c32 *samples, u16 len) {
> +					struct cordic_iq *samples, u16 len) {
>   	struct b43_phy_n *nphy = dev->phy.n;
>   	u16 i;
>   	u32 *data;
> @@ -1544,7 +1545,7 @@ static u16 b43_nphy_gen_load_samples(struct b43_wldev *dev, u32 freq, u16 max,
>   {
>   	int i;
>   	u16 bw, len, rot, angle;
> -	struct b43_c32 *samples;
> +	struct cordic_iq *samples;
>   
>   	bw = b43_is_40mhz(dev) ? 40 : 20;
>   	len = bw << 3;
> @@ -1561,7 +1562,7 @@ static u16 b43_nphy_gen_load_samples(struct b43_wldev *dev, u32 freq, u16 max,
>   		len = bw << 1;
>   	}
>   
> -	samples = kcalloc(len, sizeof(struct b43_c32), GFP_KERNEL);
> +	samples = kcalloc(len, sizeof(struct cordic_iq), GFP_KERNEL);
>   	if (!samples) {
>   		b43err(dev->wl, "allocation for samples generation failed\n");
>   		return 0;
> @@ -1570,10 +1571,10 @@ static u16 b43_nphy_gen_load_samples(struct b43_wldev *dev, u32 freq, u16 max,
>   	angle = 0;
>   
>   	for (i = 0; i < len; i++) {
> -		samples[i] = b43_cordic(angle);
> +		samples[i] = cordic_calc_iq(angle);
>   		angle += rot;
> -		samples[i].q = CORDIC_CONVERT(samples[i].q * max);
> -		samples[i].i = CORDIC_CONVERT(samples[i].i * max);
> +		samples[i].q = CORDIC_FLOAT(samples[i].q * max);
> +		samples[i].i = CORDIC_FLOAT(samples[i].i * max);
>   	}
>   
>   	i = b43_nphy_load_samples(dev, samples, len);
>