* [linux-nfc] Re: [PATCH net-next 3/3] nfc: s3fwrn5: extract the common phy blocks
@ 2020-11-26 17:12 Krzysztof Kozlowski
0 siblings, 0 replies; 3+ messages in thread
From: Krzysztof Kozlowski @ 2020-11-26 17:12 UTC (permalink / raw)
To: linux-nfc
[-- Attachment #1: Type: text/plain, Size: 10336 bytes --]
On Fri, Nov 27, 2020@12:33:39AM +0900, bongsu.jeon2@gmail.com wrote:
> From: Bongsu Jeon <bongsu.jeon@samsung.com>
>
> Extract the common phy blocks to reuse it.
> The UART module will use the common blocks.
Hi,
Thanks for the patch. Few comments below.
> Signed-off-by: Bongsu Jeon <bongsu.jeon@samsung.com>
> ---
> drivers/nfc/s3fwrn5/i2c.c | 111 ++++++++++++---------------------------
> drivers/nfc/s3fwrn5/phy_common.h | 86 ++++++++++++++++++++++++++++++
> 2 files changed, 119 insertions(+), 78 deletions(-)
> create mode 100644 drivers/nfc/s3fwrn5/phy_common.h
>
> diff --git a/drivers/nfc/s3fwrn5/i2c.c b/drivers/nfc/s3fwrn5/i2c.c
> index 9a64eea..cd1b2a7 100644
> --- a/drivers/nfc/s3fwrn5/i2c.c
> +++ b/drivers/nfc/s3fwrn5/i2c.c
> @@ -15,75 +15,30 @@
>
> #include <net/nfc/nfc.h>
>
> -#include "s3fwrn5.h"
> +#include "phy_common.h"
>
> #define S3FWRN5_I2C_DRIVER_NAME "s3fwrn5_i2c"
>
> -#define S3FWRN5_EN_WAIT_TIME 20
> -
> struct s3fwrn5_i2c_phy {
> + struct phy_common common;
> struct i2c_client *i2c_dev;
> - struct nci_dev *ndev;
> -
> - int gpio_en;
> - int gpio_fw_wake;
> -
> - struct mutex mutex;
>
> - enum s3fwrn5_mode mode;
> unsigned int irq_skip:1;
> };
>
> -static void s3fwrn5_i2c_set_wake(void *phy_id, bool wake)
> -{
> - struct s3fwrn5_i2c_phy *phy = phy_id;
> -
> - mutex_lock(&phy->mutex);
> - gpio_set_value(phy->gpio_fw_wake, wake);
> - msleep(S3FWRN5_EN_WAIT_TIME);
> - mutex_unlock(&phy->mutex);
> -}
> -
> static void s3fwrn5_i2c_set_mode(void *phy_id, enum s3fwrn5_mode mode)
> {
> struct s3fwrn5_i2c_phy *phy = phy_id;
>
> - mutex_lock(&phy->mutex);
> + mutex_lock(&phy->common.mutex);
>
> - if (phy->mode == mode)
> + if (s3fwrn5_phy_power_ctrl(&phy->common, mode) == false)
> goto out;
>
> - phy->mode = mode;
> -
> - gpio_set_value(phy->gpio_en, 1);
> - gpio_set_value(phy->gpio_fw_wake, 0);
> - if (mode == S3FWRN5_MODE_FW)
> - gpio_set_value(phy->gpio_fw_wake, 1);
> -
> - if (mode != S3FWRN5_MODE_COLD) {
> - msleep(S3FWRN5_EN_WAIT_TIME);
> - gpio_set_value(phy->gpio_en, 0);
> - msleep(S3FWRN5_EN_WAIT_TIME);
> - }
> -
> phy->irq_skip = true;
>
> out:
> - mutex_unlock(&phy->mutex);
> -}
> -
> -static enum s3fwrn5_mode s3fwrn5_i2c_get_mode(void *phy_id)
> -{
> - struct s3fwrn5_i2c_phy *phy = phy_id;
> - enum s3fwrn5_mode mode;
> -
> - mutex_lock(&phy->mutex);
> -
> - mode = phy->mode;
> -
> - mutex_unlock(&phy->mutex);
> -
> - return mode;
> + mutex_unlock(&phy->common.mutex);
> }
>
> static int s3fwrn5_i2c_write(void *phy_id, struct sk_buff *skb)
> @@ -91,7 +46,7 @@ static int s3fwrn5_i2c_write(void *phy_id, struct sk_buff *skb)
> struct s3fwrn5_i2c_phy *phy = phy_id;
> int ret;
>
> - mutex_lock(&phy->mutex);
> + mutex_lock(&phy->common.mutex);
>
> phy->irq_skip = false;
>
> @@ -102,7 +57,7 @@ static int s3fwrn5_i2c_write(void *phy_id, struct sk_buff *skb)
> ret = i2c_master_send(phy->i2c_dev, skb->data, skb->len);
> }
>
> - mutex_unlock(&phy->mutex);
> + mutex_unlock(&phy->common.mutex);
>
> if (ret < 0)
> return ret;
> @@ -114,9 +69,9 @@ static int s3fwrn5_i2c_write(void *phy_id, struct sk_buff *skb)
> }
>
> static const struct s3fwrn5_phy_ops i2c_phy_ops = {
> - .set_wake = s3fwrn5_i2c_set_wake,
> + .set_wake = s3fwrn5_phy_set_wake,
> .set_mode = s3fwrn5_i2c_set_mode,
> - .get_mode = s3fwrn5_i2c_get_mode,
> + .get_mode = s3fwrn5_phy_get_mode,
> .write = s3fwrn5_i2c_write,
> };
>
> @@ -128,7 +83,7 @@ static int s3fwrn5_i2c_read(struct s3fwrn5_i2c_phy *phy)
> char hdr[4];
> int ret;
>
> - hdr_size = (phy->mode == S3FWRN5_MODE_NCI) ?
> + hdr_size = (phy->common.mode == S3FWRN5_MODE_NCI) ?
> NCI_CTRL_HDR_SIZE : S3FWRN5_FW_HDR_SIZE;
> ret = i2c_master_recv(phy->i2c_dev, hdr, hdr_size);
> if (ret < 0)
> @@ -137,7 +92,7 @@ static int s3fwrn5_i2c_read(struct s3fwrn5_i2c_phy *phy)
> if (ret < hdr_size)
> return -EBADMSG;
>
> - data_len = (phy->mode == S3FWRN5_MODE_NCI) ?
> + data_len = (phy->common.mode == S3FWRN5_MODE_NCI) ?
> ((struct nci_ctrl_hdr *)hdr)->plen :
> ((struct s3fwrn5_fw_header *)hdr)->len;
>
> @@ -157,24 +112,24 @@ static int s3fwrn5_i2c_read(struct s3fwrn5_i2c_phy *phy)
> }
>
> out:
> - return s3fwrn5_recv_frame(phy->ndev, skb, phy->mode);
> + return s3fwrn5_recv_frame(phy->common.ndev, skb, phy->common.mode);
> }
>
> static irqreturn_t s3fwrn5_i2c_irq_thread_fn(int irq, void *phy_id)
> {
> struct s3fwrn5_i2c_phy *phy = phy_id;
>
> - if (!phy || !phy->ndev) {
> + if (!phy || !phy->common.ndev) {
> WARN_ON_ONCE(1);
> return IRQ_NONE;
> }
>
> - mutex_lock(&phy->mutex);
> + mutex_lock(&phy->common.mutex);
>
> if (phy->irq_skip)
> goto out;
>
> - switch (phy->mode) {
> + switch (phy->common.mode) {
> case S3FWRN5_MODE_NCI:
> case S3FWRN5_MODE_FW:
> s3fwrn5_i2c_read(phy);
> @@ -184,7 +139,7 @@ static irqreturn_t s3fwrn5_i2c_irq_thread_fn(int irq, void *phy_id)
> }
>
> out:
> - mutex_unlock(&phy->mutex);
> + mutex_unlock(&phy->common.mutex);
>
> return IRQ_HANDLED;
> }
> @@ -197,19 +152,19 @@ static int s3fwrn5_i2c_parse_dt(struct i2c_client *client)
> if (!np)
> return -ENODEV;
>
> - phy->gpio_en = of_get_named_gpio(np, "en-gpios", 0);
> - if (!gpio_is_valid(phy->gpio_en)) {
> + phy->common.gpio_en = of_get_named_gpio(np, "en-gpios", 0);
> + if (!gpio_is_valid(phy->common.gpio_en)) {
> /* Support also deprecated property */
> - phy->gpio_en = of_get_named_gpio(np, "s3fwrn5,en-gpios", 0);
> - if (!gpio_is_valid(phy->gpio_en))
> + phy->common.gpio_en = of_get_named_gpio(np, "s3fwrn5,en-gpios", 0);
> + if (!gpio_is_valid(phy->common.gpio_en))
> return -ENODEV;
> }
>
> - phy->gpio_fw_wake = of_get_named_gpio(np, "wake-gpios", 0);
> - if (!gpio_is_valid(phy->gpio_fw_wake)) {
> + phy->common.gpio_fw_wake = of_get_named_gpio(np, "wake-gpios", 0);
> + if (!gpio_is_valid(phy->common.gpio_fw_wake)) {
> /* Support also deprecated property */
> - phy->gpio_fw_wake = of_get_named_gpio(np, "s3fwrn5,fw-gpios", 0);
> - if (!gpio_is_valid(phy->gpio_fw_wake))
> + phy->common.gpio_fw_wake = of_get_named_gpio(np, "s3fwrn5,fw-gpios", 0);
The lines here should wrap@80 character.
> + if (!gpio_is_valid(phy->common.gpio_fw_wake))
> return -ENODEV;
> }
>
> @@ -226,8 +181,8 @@ static int s3fwrn5_i2c_probe(struct i2c_client *client,
> if (!phy)
> return -ENOMEM;
>
> - mutex_init(&phy->mutex);
> - phy->mode = S3FWRN5_MODE_COLD;
> + mutex_init(&phy->common.mutex);
> + phy->common.mode = S3FWRN5_MODE_COLD;
> phy->irq_skip = true;
>
> phy->i2c_dev = client;
> @@ -237,17 +192,17 @@ static int s3fwrn5_i2c_probe(struct i2c_client *client,
> if (ret < 0)
> return ret;
>
> - ret = devm_gpio_request_one(&phy->i2c_dev->dev, phy->gpio_en,
> - GPIOF_OUT_INIT_HIGH, "s3fwrn5_en");
> + ret = devm_gpio_request_one(&phy->i2c_dev->dev, phy->common.gpio_en,
> + GPIOF_OUT_INIT_HIGH, "s3fwrn5_en");
> if (ret < 0)
> return ret;
>
> - ret = devm_gpio_request_one(&phy->i2c_dev->dev, phy->gpio_fw_wake,
> - GPIOF_OUT_INIT_LOW, "s3fwrn5_fw_wake");
> + ret = devm_gpio_request_one(&phy->i2c_dev->dev, phy->common.gpio_fw_wake,
> + GPIOF_OUT_INIT_LOW, "s3fwrn5_fw_wake");
> if (ret < 0)
> return ret;
>
> - ret = s3fwrn5_probe(&phy->ndev, phy, &phy->i2c_dev->dev, &i2c_phy_ops);
> + ret = s3fwrn5_probe(&phy->common.ndev, phy, &phy->i2c_dev->dev, &i2c_phy_ops);
Please wrap the lines.
> if (ret < 0)
> return ret;
>
> @@ -255,7 +210,7 @@ static int s3fwrn5_i2c_probe(struct i2c_client *client,
> s3fwrn5_i2c_irq_thread_fn, IRQF_TRIGGER_HIGH | IRQF_ONESHOT,
> S3FWRN5_I2C_DRIVER_NAME, phy);
> if (ret)
> - s3fwrn5_remove(phy->ndev);
> + s3fwrn5_remove(phy->common.ndev);
>
> return ret;
> }
> @@ -264,7 +219,7 @@ static int s3fwrn5_i2c_remove(struct i2c_client *client)
> {
> struct s3fwrn5_i2c_phy *phy = i2c_get_clientdata(client);
>
> - s3fwrn5_remove(phy->ndev);
> + s3fwrn5_remove(phy->common.ndev);
>
> return 0;
> }
> diff --git a/drivers/nfc/s3fwrn5/phy_common.h b/drivers/nfc/s3fwrn5/phy_common.h
> new file mode 100644
> index 0000000..14f7690
> --- /dev/null
> +++ b/drivers/nfc/s3fwrn5/phy_common.h
> @@ -0,0 +1,86 @@
> +/* SPDX-License-Identifier: GPL-2.0-or-later
> + *
> + * Link Layer for Samsung S3FWRN5 NCI based Driver
> + *
> + * Copyright (C) 2015 Samsung Electrnoics
> + * Robert Baldyga <r.baldyga@samsung.com>
> + * Copyright (C) 2020 Samsung Electrnoics
> + * Bongsu Jeon <bongsu.jeon@samsung.com>
> + */
> +
> +#ifndef __LOCAL_PHY_COMMON_H
> +#define __LOCAL_PHY_COMMON_H
Header guard: __NFC_S3FWRN5_PHY_COMMON_H
> +
> +#include "s3fwrn5.h"
This include should not be needed.
> +
> +#define S3FWRN5_EN_WAIT_TIME 20
> +
> +struct phy_common {
> + struct nci_dev *ndev;
> +
> + int gpio_en;
> + int gpio_fw_wake;
> +
> + struct mutex mutex;
> +
> + enum s3fwrn5_mode mode;
> +};
> +
> +static inline void s3fwrn5_phy_set_wake(void *phy_id, bool wake)
> +{
All these should go to a C source file. If needed - GPL exported.
> + struct phy_common *phy = phy_id;
> +
> + mutex_lock(&phy->mutex);
> + gpio_set_value(phy->gpio_fw_wake, wake);
> + msleep(S3FWRN5_EN_WAIT_TIME);
> + mutex_unlock(&phy->mutex);
> +}
> +
> +static inline bool s3fwrn5_phy_power_ctrl(struct phy_common *phy,
> + enum s3fwrn5_mode mode)
> +{
> + if (phy->mode == mode)
> + return false;
> +
> + phy->mode = mode;
> +
> + gpio_set_value(phy->gpio_en, 1);
> + gpio_set_value(phy->gpio_fw_wake, 0);
> + if (mode == S3FWRN5_MODE_FW)
> + gpio_set_value(phy->gpio_fw_wake, 1);
> +
> + if (mode != S3FWRN5_MODE_COLD) {
> + msleep(S3FWRN5_EN_WAIT_TIME);
> + gpio_set_value(phy->gpio_en, 0);
> + msleep(S3FWRN5_EN_WAIT_TIME);
> + }
> +
> + return true;
> +}
> +
> +static inline void s3fwrn5_phy_set_mode(void *phy_id, enum s3fwrn5_mode mode)
> +{
This looks unused. If you need it only for your next chip, add it with
next patch (the patch adding the user).
Best regards,
Krzysztof
^ permalink raw reply [flat|nested] 3+ messages in thread
* [linux-nfc] Re: [PATCH net-next 3/3] nfc: s3fwrn5: extract the common phy blocks
@ 2020-11-26 23:09 Bongsu Jeon
0 siblings, 0 replies; 3+ messages in thread
From: Bongsu Jeon @ 2020-11-26 23:09 UTC (permalink / raw)
To: linux-nfc
[-- Attachment #1: Type: text/plain, Size: 12494 bytes --]
On Fri, Nov 27, 2020@2:13 AM Krzysztof Kozlowski <krzk@kernel.org> wrote:
>
> On Fri, Nov 27, 2020@12:33:39AM +0900, bongsu.jeon2@gmail.com wrote:
> > From: Bongsu Jeon <bongsu.jeon@samsung.com>
> >
> > Extract the common phy blocks to reuse it.
> > The UART module will use the common blocks.
>
>
> Hi,
>
> Thanks for the patch. Few comments below.
>
> > Signed-off-by: Bongsu Jeon <bongsu.jeon@samsung.com>
> > ---
> > drivers/nfc/s3fwrn5/i2c.c | 111 ++++++++++++---------------------------
> > drivers/nfc/s3fwrn5/phy_common.h | 86 ++++++++++++++++++++++++++++++
> > 2 files changed, 119 insertions(+), 78 deletions(-)
> > create mode 100644 drivers/nfc/s3fwrn5/phy_common.h
> >
> > diff --git a/drivers/nfc/s3fwrn5/i2c.c b/drivers/nfc/s3fwrn5/i2c.c
> > index 9a64eea..cd1b2a7 100644
> > --- a/drivers/nfc/s3fwrn5/i2c.c
> > +++ b/drivers/nfc/s3fwrn5/i2c.c
> > @@ -15,75 +15,30 @@
> >
> > #include <net/nfc/nfc.h>
> >
> > -#include "s3fwrn5.h"
> > +#include "phy_common.h"
> >
> > #define S3FWRN5_I2C_DRIVER_NAME "s3fwrn5_i2c"
> >
> > -#define S3FWRN5_EN_WAIT_TIME 20
> > -
> > struct s3fwrn5_i2c_phy {
> > + struct phy_common common;
> > struct i2c_client *i2c_dev;
> > - struct nci_dev *ndev;
> > -
> > - int gpio_en;
> > - int gpio_fw_wake;
> > -
> > - struct mutex mutex;
> >
> > - enum s3fwrn5_mode mode;
> > unsigned int irq_skip:1;
> > };
> >
> > -static void s3fwrn5_i2c_set_wake(void *phy_id, bool wake)
> > -{
> > - struct s3fwrn5_i2c_phy *phy = phy_id;
> > -
> > - mutex_lock(&phy->mutex);
> > - gpio_set_value(phy->gpio_fw_wake, wake);
> > - msleep(S3FWRN5_EN_WAIT_TIME);
> > - mutex_unlock(&phy->mutex);
> > -}
> > -
> > static void s3fwrn5_i2c_set_mode(void *phy_id, enum s3fwrn5_mode mode)
> > {
> > struct s3fwrn5_i2c_phy *phy = phy_id;
> >
> > - mutex_lock(&phy->mutex);
> > + mutex_lock(&phy->common.mutex);
> >
> > - if (phy->mode == mode)
> > + if (s3fwrn5_phy_power_ctrl(&phy->common, mode) == false)
> > goto out;
> >
> > - phy->mode = mode;
> > -
> > - gpio_set_value(phy->gpio_en, 1);
> > - gpio_set_value(phy->gpio_fw_wake, 0);
> > - if (mode == S3FWRN5_MODE_FW)
> > - gpio_set_value(phy->gpio_fw_wake, 1);
> > -
> > - if (mode != S3FWRN5_MODE_COLD) {
> > - msleep(S3FWRN5_EN_WAIT_TIME);
> > - gpio_set_value(phy->gpio_en, 0);
> > - msleep(S3FWRN5_EN_WAIT_TIME);
> > - }
> > -
> > phy->irq_skip = true;
> >
> > out:
> > - mutex_unlock(&phy->mutex);
> > -}
> > -
> > -static enum s3fwrn5_mode s3fwrn5_i2c_get_mode(void *phy_id)
> > -{
> > - struct s3fwrn5_i2c_phy *phy = phy_id;
> > - enum s3fwrn5_mode mode;
> > -
> > - mutex_lock(&phy->mutex);
> > -
> > - mode = phy->mode;
> > -
> > - mutex_unlock(&phy->mutex);
> > -
> > - return mode;
> > + mutex_unlock(&phy->common.mutex);
> > }
> >
> > static int s3fwrn5_i2c_write(void *phy_id, struct sk_buff *skb)
> > @@ -91,7 +46,7 @@ static int s3fwrn5_i2c_write(void *phy_id, struct sk_buff *skb)
> > struct s3fwrn5_i2c_phy *phy = phy_id;
> > int ret;
> >
> > - mutex_lock(&phy->mutex);
> > + mutex_lock(&phy->common.mutex);
> >
> > phy->irq_skip = false;
> >
> > @@ -102,7 +57,7 @@ static int s3fwrn5_i2c_write(void *phy_id, struct sk_buff *skb)
> > ret = i2c_master_send(phy->i2c_dev, skb->data, skb->len);
> > }
> >
> > - mutex_unlock(&phy->mutex);
> > + mutex_unlock(&phy->common.mutex);
> >
> > if (ret < 0)
> > return ret;
> > @@ -114,9 +69,9 @@ static int s3fwrn5_i2c_write(void *phy_id, struct sk_buff *skb)
> > }
> >
> > static const struct s3fwrn5_phy_ops i2c_phy_ops = {
> > - .set_wake = s3fwrn5_i2c_set_wake,
> > + .set_wake = s3fwrn5_phy_set_wake,
> > .set_mode = s3fwrn5_i2c_set_mode,
> > - .get_mode = s3fwrn5_i2c_get_mode,
> > + .get_mode = s3fwrn5_phy_get_mode,
> > .write = s3fwrn5_i2c_write,
> > };
> >
> > @@ -128,7 +83,7 @@ static int s3fwrn5_i2c_read(struct s3fwrn5_i2c_phy *phy)
> > char hdr[4];
> > int ret;
> >
> > - hdr_size = (phy->mode == S3FWRN5_MODE_NCI) ?
> > + hdr_size = (phy->common.mode == S3FWRN5_MODE_NCI) ?
> > NCI_CTRL_HDR_SIZE : S3FWRN5_FW_HDR_SIZE;
> > ret = i2c_master_recv(phy->i2c_dev, hdr, hdr_size);
> > if (ret < 0)
> > @@ -137,7 +92,7 @@ static int s3fwrn5_i2c_read(struct s3fwrn5_i2c_phy *phy)
> > if (ret < hdr_size)
> > return -EBADMSG;
> >
> > - data_len = (phy->mode == S3FWRN5_MODE_NCI) ?
> > + data_len = (phy->common.mode == S3FWRN5_MODE_NCI) ?
> > ((struct nci_ctrl_hdr *)hdr)->plen :
> > ((struct s3fwrn5_fw_header *)hdr)->len;
> >
> > @@ -157,24 +112,24 @@ static int s3fwrn5_i2c_read(struct s3fwrn5_i2c_phy *phy)
> > }
> >
> > out:
> > - return s3fwrn5_recv_frame(phy->ndev, skb, phy->mode);
> > + return s3fwrn5_recv_frame(phy->common.ndev, skb, phy->common.mode);
> > }
> >
> > static irqreturn_t s3fwrn5_i2c_irq_thread_fn(int irq, void *phy_id)
> > {
> > struct s3fwrn5_i2c_phy *phy = phy_id;
> >
> > - if (!phy || !phy->ndev) {
> > + if (!phy || !phy->common.ndev) {
> > WARN_ON_ONCE(1);
> > return IRQ_NONE;
> > }
> >
> > - mutex_lock(&phy->mutex);
> > + mutex_lock(&phy->common.mutex);
> >
> > if (phy->irq_skip)
> > goto out;
> >
> > - switch (phy->mode) {
> > + switch (phy->common.mode) {
> > case S3FWRN5_MODE_NCI:
> > case S3FWRN5_MODE_FW:
> > s3fwrn5_i2c_read(phy);
> > @@ -184,7 +139,7 @@ static irqreturn_t s3fwrn5_i2c_irq_thread_fn(int irq, void *phy_id)
> > }
> >
> > out:
> > - mutex_unlock(&phy->mutex);
> > + mutex_unlock(&phy->common.mutex);
> >
> > return IRQ_HANDLED;
> > }
> > @@ -197,19 +152,19 @@ static int s3fwrn5_i2c_parse_dt(struct i2c_client *client)
> > if (!np)
> > return -ENODEV;
> >
> > - phy->gpio_en = of_get_named_gpio(np, "en-gpios", 0);
> > - if (!gpio_is_valid(phy->gpio_en)) {
> > + phy->common.gpio_en = of_get_named_gpio(np, "en-gpios", 0);
> > + if (!gpio_is_valid(phy->common.gpio_en)) {
> > /* Support also deprecated property */
> > - phy->gpio_en = of_get_named_gpio(np, "s3fwrn5,en-gpios", 0);
> > - if (!gpio_is_valid(phy->gpio_en))
> > + phy->common.gpio_en = of_get_named_gpio(np, "s3fwrn5,en-gpios", 0);
> > + if (!gpio_is_valid(phy->common.gpio_en))
> > return -ENODEV;
> > }
> >
> > - phy->gpio_fw_wake = of_get_named_gpio(np, "wake-gpios", 0);
> > - if (!gpio_is_valid(phy->gpio_fw_wake)) {
> > + phy->common.gpio_fw_wake = of_get_named_gpio(np, "wake-gpios", 0);
> > + if (!gpio_is_valid(phy->common.gpio_fw_wake)) {
> > /* Support also deprecated property */
> > - phy->gpio_fw_wake = of_get_named_gpio(np, "s3fwrn5,fw-gpios", 0);
> > - if (!gpio_is_valid(phy->gpio_fw_wake))
> > + phy->common.gpio_fw_wake = of_get_named_gpio(np, "s3fwrn5,fw-gpios", 0);
>
> The lines here should wrap@80 character.
>
> > + if (!gpio_is_valid(phy->common.gpio_fw_wake))
> > return -ENODEV;
> > }
> >
> > @@ -226,8 +181,8 @@ static int s3fwrn5_i2c_probe(struct i2c_client *client,
> > if (!phy)
> > return -ENOMEM;
> >
> > - mutex_init(&phy->mutex);
> > - phy->mode = S3FWRN5_MODE_COLD;
> > + mutex_init(&phy->common.mutex);
> > + phy->common.mode = S3FWRN5_MODE_COLD;
> > phy->irq_skip = true;
> >
> > phy->i2c_dev = client;
> > @@ -237,17 +192,17 @@ static int s3fwrn5_i2c_probe(struct i2c_client *client,
> > if (ret < 0)
> > return ret;
> >
> > - ret = devm_gpio_request_one(&phy->i2c_dev->dev, phy->gpio_en,
> > - GPIOF_OUT_INIT_HIGH, "s3fwrn5_en");
> > + ret = devm_gpio_request_one(&phy->i2c_dev->dev, phy->common.gpio_en,
> > + GPIOF_OUT_INIT_HIGH, "s3fwrn5_en");
> > if (ret < 0)
> > return ret;
> >
> > - ret = devm_gpio_request_one(&phy->i2c_dev->dev, phy->gpio_fw_wake,
> > - GPIOF_OUT_INIT_LOW, "s3fwrn5_fw_wake");
> > + ret = devm_gpio_request_one(&phy->i2c_dev->dev, phy->common.gpio_fw_wake,
> > + GPIOF_OUT_INIT_LOW, "s3fwrn5_fw_wake");
> > if (ret < 0)
> > return ret;
> >
> > - ret = s3fwrn5_probe(&phy->ndev, phy, &phy->i2c_dev->dev, &i2c_phy_ops);
> > + ret = s3fwrn5_probe(&phy->common.ndev, phy, &phy->i2c_dev->dev, &i2c_phy_ops);
>
> Please wrap the lines.
>
> > if (ret < 0)
> > return ret;
> >
> > @@ -255,7 +210,7 @@ static int s3fwrn5_i2c_probe(struct i2c_client *client,
> > s3fwrn5_i2c_irq_thread_fn, IRQF_TRIGGER_HIGH | IRQF_ONESHOT,
> > S3FWRN5_I2C_DRIVER_NAME, phy);
> > if (ret)
> > - s3fwrn5_remove(phy->ndev);
> > + s3fwrn5_remove(phy->common.ndev);
> >
> > return ret;
> > }
> > @@ -264,7 +219,7 @@ static int s3fwrn5_i2c_remove(struct i2c_client *client)
> > {
> > struct s3fwrn5_i2c_phy *phy = i2c_get_clientdata(client);
> >
> > - s3fwrn5_remove(phy->ndev);
> > + s3fwrn5_remove(phy->common.ndev);
> >
> > return 0;
> > }
> > diff --git a/drivers/nfc/s3fwrn5/phy_common.h b/drivers/nfc/s3fwrn5/phy_common.h
> > new file mode 100644
> > index 0000000..14f7690
> > --- /dev/null
> > +++ b/drivers/nfc/s3fwrn5/phy_common.h
> > @@ -0,0 +1,86 @@
> > +/* SPDX-License-Identifier: GPL-2.0-or-later
> > + *
> > + * Link Layer for Samsung S3FWRN5 NCI based Driver
> > + *
> > + * Copyright (C) 2015 Samsung Electrnoics
> > + * Robert Baldyga <r.baldyga@samsung.com>
> > + * Copyright (C) 2020 Samsung Electrnoics
> > + * Bongsu Jeon <bongsu.jeon@samsung.com>
> > + */
> > +
> > +#ifndef __LOCAL_PHY_COMMON_H
> > +#define __LOCAL_PHY_COMMON_H
>
> Header guard: __NFC_S3FWRN5_PHY_COMMON_H
>
> > +
> > +#include "s3fwrn5.h"
>
> This include should not be needed.
>
Actually, I included this because of enum s3fwrn5_mode.
Do you think the following structure is good?
0. remove the '#include "s3fwrn5.h" and the common function's
definition in phy_common.h.
1. make phy_common.c that includes the common function's definition
and "s3fwrn5.h , phy_common.h".
2. i2c.c includes "s3fwrn5.h , phy_common.h".
> > +
> > +#define S3FWRN5_EN_WAIT_TIME 20
> > +
> > +struct phy_common {
> > + struct nci_dev *ndev;
> > +
> > + int gpio_en;
> > + int gpio_fw_wake;
> > +
> > + struct mutex mutex;
> > +
> > + enum s3fwrn5_mode mode;
> > +};
> > +
> > +static inline void s3fwrn5_phy_set_wake(void *phy_id, bool wake)
> > +{
>
> All these should go to a C source file. If needed - GPL exported.
>
> > + struct phy_common *phy = phy_id;
> > +
> > + mutex_lock(&phy->mutex);
> > + gpio_set_value(phy->gpio_fw_wake, wake);
> > + msleep(S3FWRN5_EN_WAIT_TIME);
> > + mutex_unlock(&phy->mutex);
> > +}
> > +
> > +static inline bool s3fwrn5_phy_power_ctrl(struct phy_common *phy,
> > + enum s3fwrn5_mode mode)
> > +{
> > + if (phy->mode == mode)
> > + return false;
> > +
> > + phy->mode = mode;
> > +
> > + gpio_set_value(phy->gpio_en, 1);
> > + gpio_set_value(phy->gpio_fw_wake, 0);
> > + if (mode == S3FWRN5_MODE_FW)
> > + gpio_set_value(phy->gpio_fw_wake, 1);
> > +
> > + if (mode != S3FWRN5_MODE_COLD) {
> > + msleep(S3FWRN5_EN_WAIT_TIME);
> > + gpio_set_value(phy->gpio_en, 0);
> > + msleep(S3FWRN5_EN_WAIT_TIME);
> > + }
> > +
> > + return true;
> > +}
> > +
> > +static inline void s3fwrn5_phy_set_mode(void *phy_id, enum s3fwrn5_mode mode)
> > +{
>
> This looks unused. If you need it only for your next chip, add it with
> next patch (the patch adding the user).
>
Okay I understand it.
> Best regards,
> Krzysztof
^ permalink raw reply [flat|nested] 3+ messages in thread
* [linux-nfc] Re: [PATCH net-next 3/3] nfc: s3fwrn5: extract the common phy blocks
@ 2020-11-28 11:45 Krzysztof Kozlowski
0 siblings, 0 replies; 3+ messages in thread
From: Krzysztof Kozlowski @ 2020-11-28 11:45 UTC (permalink / raw)
To: linux-nfc
[-- Attachment #1: Type: text/plain, Size: 11643 bytes --]
On Fri, Nov 27, 2020@08:09:24AM +0900, Bongsu Jeon wrote:
> On Fri, Nov 27, 2020@2:13 AM Krzysztof Kozlowski <krzk@kernel.org> wrote:
> >
> > On Fri, Nov 27, 2020@12:33:39AM +0900, bongsu.jeon2@gmail.com wrote:
> > > From: Bongsu Jeon <bongsu.jeon@samsung.com>
> > >
> > > Extract the common phy blocks to reuse it.
> > > The UART module will use the common blocks.
> >
> >
> > Hi,
> >
> > Thanks for the patch. Few comments below.
> >
> > > Signed-off-by: Bongsu Jeon <bongsu.jeon@samsung.com>
> > > ---
> > > drivers/nfc/s3fwrn5/i2c.c | 111 ++++++++++++---------------------------
> > > drivers/nfc/s3fwrn5/phy_common.h | 86 ++++++++++++++++++++++++++++++
> > > 2 files changed, 119 insertions(+), 78 deletions(-)
> > > create mode 100644 drivers/nfc/s3fwrn5/phy_common.h
> > >
> > > diff --git a/drivers/nfc/s3fwrn5/i2c.c b/drivers/nfc/s3fwrn5/i2c.c
> > > index 9a64eea..cd1b2a7 100644
> > > --- a/drivers/nfc/s3fwrn5/i2c.c
> > > +++ b/drivers/nfc/s3fwrn5/i2c.c
> > > @@ -15,75 +15,30 @@
> > >
> > > #include <net/nfc/nfc.h>
> > >
> > > -#include "s3fwrn5.h"
> > > +#include "phy_common.h"
> > >
> > > #define S3FWRN5_I2C_DRIVER_NAME "s3fwrn5_i2c"
> > >
> > > -#define S3FWRN5_EN_WAIT_TIME 20
> > > -
> > > struct s3fwrn5_i2c_phy {
> > > + struct phy_common common;
> > > struct i2c_client *i2c_dev;
> > > - struct nci_dev *ndev;
> > > -
> > > - int gpio_en;
> > > - int gpio_fw_wake;
> > > -
> > > - struct mutex mutex;
> > >
> > > - enum s3fwrn5_mode mode;
> > > unsigned int irq_skip:1;
> > > };
> > >
> > > -static void s3fwrn5_i2c_set_wake(void *phy_id, bool wake)
> > > -{
> > > - struct s3fwrn5_i2c_phy *phy = phy_id;
> > > -
> > > - mutex_lock(&phy->mutex);
> > > - gpio_set_value(phy->gpio_fw_wake, wake);
> > > - msleep(S3FWRN5_EN_WAIT_TIME);
> > > - mutex_unlock(&phy->mutex);
> > > -}
> > > -
> > > static void s3fwrn5_i2c_set_mode(void *phy_id, enum s3fwrn5_mode mode)
> > > {
> > > struct s3fwrn5_i2c_phy *phy = phy_id;
> > >
> > > - mutex_lock(&phy->mutex);
> > > + mutex_lock(&phy->common.mutex);
> > >
> > > - if (phy->mode == mode)
> > > + if (s3fwrn5_phy_power_ctrl(&phy->common, mode) == false)
> > > goto out;
> > >
> > > - phy->mode = mode;
> > > -
> > > - gpio_set_value(phy->gpio_en, 1);
> > > - gpio_set_value(phy->gpio_fw_wake, 0);
> > > - if (mode == S3FWRN5_MODE_FW)
> > > - gpio_set_value(phy->gpio_fw_wake, 1);
> > > -
> > > - if (mode != S3FWRN5_MODE_COLD) {
> > > - msleep(S3FWRN5_EN_WAIT_TIME);
> > > - gpio_set_value(phy->gpio_en, 0);
> > > - msleep(S3FWRN5_EN_WAIT_TIME);
> > > - }
> > > -
> > > phy->irq_skip = true;
> > >
> > > out:
> > > - mutex_unlock(&phy->mutex);
> > > -}
> > > -
> > > -static enum s3fwrn5_mode s3fwrn5_i2c_get_mode(void *phy_id)
> > > -{
> > > - struct s3fwrn5_i2c_phy *phy = phy_id;
> > > - enum s3fwrn5_mode mode;
> > > -
> > > - mutex_lock(&phy->mutex);
> > > -
> > > - mode = phy->mode;
> > > -
> > > - mutex_unlock(&phy->mutex);
> > > -
> > > - return mode;
> > > + mutex_unlock(&phy->common.mutex);
> > > }
> > >
> > > static int s3fwrn5_i2c_write(void *phy_id, struct sk_buff *skb)
> > > @@ -91,7 +46,7 @@ static int s3fwrn5_i2c_write(void *phy_id, struct sk_buff *skb)
> > > struct s3fwrn5_i2c_phy *phy = phy_id;
> > > int ret;
> > >
> > > - mutex_lock(&phy->mutex);
> > > + mutex_lock(&phy->common.mutex);
> > >
> > > phy->irq_skip = false;
> > >
> > > @@ -102,7 +57,7 @@ static int s3fwrn5_i2c_write(void *phy_id, struct sk_buff *skb)
> > > ret = i2c_master_send(phy->i2c_dev, skb->data, skb->len);
> > > }
> > >
> > > - mutex_unlock(&phy->mutex);
> > > + mutex_unlock(&phy->common.mutex);
> > >
> > > if (ret < 0)
> > > return ret;
> > > @@ -114,9 +69,9 @@ static int s3fwrn5_i2c_write(void *phy_id, struct sk_buff *skb)
> > > }
> > >
> > > static const struct s3fwrn5_phy_ops i2c_phy_ops = {
> > > - .set_wake = s3fwrn5_i2c_set_wake,
> > > + .set_wake = s3fwrn5_phy_set_wake,
> > > .set_mode = s3fwrn5_i2c_set_mode,
> > > - .get_mode = s3fwrn5_i2c_get_mode,
> > > + .get_mode = s3fwrn5_phy_get_mode,
> > > .write = s3fwrn5_i2c_write,
> > > };
> > >
> > > @@ -128,7 +83,7 @@ static int s3fwrn5_i2c_read(struct s3fwrn5_i2c_phy *phy)
> > > char hdr[4];
> > > int ret;
> > >
> > > - hdr_size = (phy->mode == S3FWRN5_MODE_NCI) ?
> > > + hdr_size = (phy->common.mode == S3FWRN5_MODE_NCI) ?
> > > NCI_CTRL_HDR_SIZE : S3FWRN5_FW_HDR_SIZE;
> > > ret = i2c_master_recv(phy->i2c_dev, hdr, hdr_size);
> > > if (ret < 0)
> > > @@ -137,7 +92,7 @@ static int s3fwrn5_i2c_read(struct s3fwrn5_i2c_phy *phy)
> > > if (ret < hdr_size)
> > > return -EBADMSG;
> > >
> > > - data_len = (phy->mode == S3FWRN5_MODE_NCI) ?
> > > + data_len = (phy->common.mode == S3FWRN5_MODE_NCI) ?
> > > ((struct nci_ctrl_hdr *)hdr)->plen :
> > > ((struct s3fwrn5_fw_header *)hdr)->len;
> > >
> > > @@ -157,24 +112,24 @@ static int s3fwrn5_i2c_read(struct s3fwrn5_i2c_phy *phy)
> > > }
> > >
> > > out:
> > > - return s3fwrn5_recv_frame(phy->ndev, skb, phy->mode);
> > > + return s3fwrn5_recv_frame(phy->common.ndev, skb, phy->common.mode);
> > > }
> > >
> > > static irqreturn_t s3fwrn5_i2c_irq_thread_fn(int irq, void *phy_id)
> > > {
> > > struct s3fwrn5_i2c_phy *phy = phy_id;
> > >
> > > - if (!phy || !phy->ndev) {
> > > + if (!phy || !phy->common.ndev) {
> > > WARN_ON_ONCE(1);
> > > return IRQ_NONE;
> > > }
> > >
> > > - mutex_lock(&phy->mutex);
> > > + mutex_lock(&phy->common.mutex);
> > >
> > > if (phy->irq_skip)
> > > goto out;
> > >
> > > - switch (phy->mode) {
> > > + switch (phy->common.mode) {
> > > case S3FWRN5_MODE_NCI:
> > > case S3FWRN5_MODE_FW:
> > > s3fwrn5_i2c_read(phy);
> > > @@ -184,7 +139,7 @@ static irqreturn_t s3fwrn5_i2c_irq_thread_fn(int irq, void *phy_id)
> > > }
> > >
> > > out:
> > > - mutex_unlock(&phy->mutex);
> > > + mutex_unlock(&phy->common.mutex);
> > >
> > > return IRQ_HANDLED;
> > > }
> > > @@ -197,19 +152,19 @@ static int s3fwrn5_i2c_parse_dt(struct i2c_client *client)
> > > if (!np)
> > > return -ENODEV;
> > >
> > > - phy->gpio_en = of_get_named_gpio(np, "en-gpios", 0);
> > > - if (!gpio_is_valid(phy->gpio_en)) {
> > > + phy->common.gpio_en = of_get_named_gpio(np, "en-gpios", 0);
> > > + if (!gpio_is_valid(phy->common.gpio_en)) {
> > > /* Support also deprecated property */
> > > - phy->gpio_en = of_get_named_gpio(np, "s3fwrn5,en-gpios", 0);
> > > - if (!gpio_is_valid(phy->gpio_en))
> > > + phy->common.gpio_en = of_get_named_gpio(np, "s3fwrn5,en-gpios", 0);
> > > + if (!gpio_is_valid(phy->common.gpio_en))
> > > return -ENODEV;
> > > }
> > >
> > > - phy->gpio_fw_wake = of_get_named_gpio(np, "wake-gpios", 0);
> > > - if (!gpio_is_valid(phy->gpio_fw_wake)) {
> > > + phy->common.gpio_fw_wake = of_get_named_gpio(np, "wake-gpios", 0);
> > > + if (!gpio_is_valid(phy->common.gpio_fw_wake)) {
> > > /* Support also deprecated property */
> > > - phy->gpio_fw_wake = of_get_named_gpio(np, "s3fwrn5,fw-gpios", 0);
> > > - if (!gpio_is_valid(phy->gpio_fw_wake))
> > > + phy->common.gpio_fw_wake = of_get_named_gpio(np, "s3fwrn5,fw-gpios", 0);
> >
> > The lines here should wrap@80 character.
> >
> > > + if (!gpio_is_valid(phy->common.gpio_fw_wake))
> > > return -ENODEV;
> > > }
> > >
> > > @@ -226,8 +181,8 @@ static int s3fwrn5_i2c_probe(struct i2c_client *client,
> > > if (!phy)
> > > return -ENOMEM;
> > >
> > > - mutex_init(&phy->mutex);
> > > - phy->mode = S3FWRN5_MODE_COLD;
> > > + mutex_init(&phy->common.mutex);
> > > + phy->common.mode = S3FWRN5_MODE_COLD;
> > > phy->irq_skip = true;
> > >
> > > phy->i2c_dev = client;
> > > @@ -237,17 +192,17 @@ static int s3fwrn5_i2c_probe(struct i2c_client *client,
> > > if (ret < 0)
> > > return ret;
> > >
> > > - ret = devm_gpio_request_one(&phy->i2c_dev->dev, phy->gpio_en,
> > > - GPIOF_OUT_INIT_HIGH, "s3fwrn5_en");
> > > + ret = devm_gpio_request_one(&phy->i2c_dev->dev, phy->common.gpio_en,
> > > + GPIOF_OUT_INIT_HIGH, "s3fwrn5_en");
> > > if (ret < 0)
> > > return ret;
> > >
> > > - ret = devm_gpio_request_one(&phy->i2c_dev->dev, phy->gpio_fw_wake,
> > > - GPIOF_OUT_INIT_LOW, "s3fwrn5_fw_wake");
> > > + ret = devm_gpio_request_one(&phy->i2c_dev->dev, phy->common.gpio_fw_wake,
> > > + GPIOF_OUT_INIT_LOW, "s3fwrn5_fw_wake");
> > > if (ret < 0)
> > > return ret;
> > >
> > > - ret = s3fwrn5_probe(&phy->ndev, phy, &phy->i2c_dev->dev, &i2c_phy_ops);
> > > + ret = s3fwrn5_probe(&phy->common.ndev, phy, &phy->i2c_dev->dev, &i2c_phy_ops);
> >
> > Please wrap the lines.
> >
> > > if (ret < 0)
> > > return ret;
> > >
> > > @@ -255,7 +210,7 @@ static int s3fwrn5_i2c_probe(struct i2c_client *client,
> > > s3fwrn5_i2c_irq_thread_fn, IRQF_TRIGGER_HIGH | IRQF_ONESHOT,
> > > S3FWRN5_I2C_DRIVER_NAME, phy);
> > > if (ret)
> > > - s3fwrn5_remove(phy->ndev);
> > > + s3fwrn5_remove(phy->common.ndev);
> > >
> > > return ret;
> > > }
> > > @@ -264,7 +219,7 @@ static int s3fwrn5_i2c_remove(struct i2c_client *client)
> > > {
> > > struct s3fwrn5_i2c_phy *phy = i2c_get_clientdata(client);
> > >
> > > - s3fwrn5_remove(phy->ndev);
> > > + s3fwrn5_remove(phy->common.ndev);
> > >
> > > return 0;
> > > }
> > > diff --git a/drivers/nfc/s3fwrn5/phy_common.h b/drivers/nfc/s3fwrn5/phy_common.h
> > > new file mode 100644
> > > index 0000000..14f7690
> > > --- /dev/null
> > > +++ b/drivers/nfc/s3fwrn5/phy_common.h
> > > @@ -0,0 +1,86 @@
> > > +/* SPDX-License-Identifier: GPL-2.0-or-later
> > > + *
> > > + * Link Layer for Samsung S3FWRN5 NCI based Driver
> > > + *
> > > + * Copyright (C) 2015 Samsung Electrnoics
> > > + * Robert Baldyga <r.baldyga@samsung.com>
> > > + * Copyright (C) 2020 Samsung Electrnoics
> > > + * Bongsu Jeon <bongsu.jeon@samsung.com>
> > > + */
> > > +
> > > +#ifndef __LOCAL_PHY_COMMON_H
> > > +#define __LOCAL_PHY_COMMON_H
> >
> > Header guard: __NFC_S3FWRN5_PHY_COMMON_H
> >
> > > +
> > > +#include "s3fwrn5.h"
> >
> > This include should not be needed.
> >
>
> Actually, I included this because of enum s3fwrn5_mode.
> Do you think the following structure is good?
>
> 0. remove the '#include "s3fwrn5.h" and the common function's
> definition in phy_common.h.
> 1. make phy_common.c that includes the common function's definition
> and "s3fwrn5.h , phy_common.h".
> 2. i2c.c includes "s3fwrn5.h , phy_common.h".
It looks like you already sent v2... I'll skip answering here then.
Best regards,
Krzysztof
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2020-11-28 11:45 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2020-11-28 11:45 [linux-nfc] Re: [PATCH net-next 3/3] nfc: s3fwrn5: extract the common phy blocks Krzysztof Kozlowski
-- strict thread matches above, loose matches on Subject: below --
2020-11-26 23:09 Bongsu Jeon
2020-11-26 17:12 Krzysztof Kozlowski
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).