From mboxrd@z Thu Jan 1 00:00:00 1970 From: Lee Jones Subject: Re: [PATCH v2 03/10] mfd: cros_ec: Tweak struct cros_ec_device for clarity Date: Thu, 3 Jul 2014 08:28:24 +0100 Message-ID: <20140703072824.GA30534@lee--X1> References: <1403115247-8853-1-git-send-email-dianders@chromium.org> <1403115247-8853-4-git-send-email-dianders@chromium.org> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Received: from mail-ig0-f172.google.com ([209.85.213.172]:34669 "EHLO mail-ig0-f172.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756362AbaGCH2c (ORCPT ); Thu, 3 Jul 2014 03:28:32 -0400 Received: by mail-ig0-f172.google.com with SMTP id hn18so7580971igb.17 for ; Thu, 03 Jul 2014 00:28:31 -0700 (PDT) Content-Disposition: inline In-Reply-To: <1403115247-8853-4-git-send-email-dianders@chromium.org> Sender: linux-samsung-soc-owner@vger.kernel.org List-Id: linux-samsung-soc@vger.kernel.org To: Doug Anderson Cc: Andrew Bresticker , swarren@wwwdotorg.org, olof@lixom.net, Sonny Rao , linux-samsung-soc@vger.kernel.org, Javier Martinez Canillas , Bill Richardson , sjg@chromium.org, Wolfram Sang , broonie@kernel.org, sameo@linux.intel.com, linux-kernel@vger.kernel.org On Wed, 18 Jun 2014, Doug Anderson wrote: > From: Bill Richardson >=20 > The members of struct cros_ec_device were improperly commented, and > intermixed the private and public sections. This is just cleanup to m= ake it > more obvious what goes with what. >=20 > [dianders: left lock in the structure but gave it the name that will > eventually be used.] >=20 > Signed-off-by: Bill Richardson > Signed-off-by: Doug Anderson > Acked-by: Lee Jones > --- > Changes in v2: None >=20 > drivers/mfd/cros_ec.c | 2 +- > drivers/mfd/cros_ec_i2c.c | 4 +-- > drivers/mfd/cros_ec_spi.c | 10 +++---- > include/linux/mfd/cros_ec.h | 65 ++++++++++++++++++++++++-----------= ---------- > 4 files changed, 43 insertions(+), 38 deletions(-) Patch applied. Clause: There is a chance that this patch might not be seen in -next for ~24-48hrs. If it's not there by 72hrs, feel free to poke. > diff --git a/drivers/mfd/cros_ec.c b/drivers/mfd/cros_ec.c > index 38fe9bf..04e053c 100644 > --- a/drivers/mfd/cros_ec.c > +++ b/drivers/mfd/cros_ec.c > @@ -57,7 +57,7 @@ static int cros_ec_command_sendrecv(struct cros_ec_= device *ec_dev, > msg.in_buf =3D in_buf; > msg.in_len =3D in_len; > =20 > - return ec_dev->command_xfer(ec_dev, &msg); > + return ec_dev->cmd_xfer(ec_dev, &msg); > } > =20 > static int cros_ec_command_recv(struct cros_ec_device *ec_dev, > diff --git a/drivers/mfd/cros_ec_i2c.c b/drivers/mfd/cros_ec_i2c.c > index 4f71be9..777e529 100644 > --- a/drivers/mfd/cros_ec_i2c.c > +++ b/drivers/mfd/cros_ec_i2c.c > @@ -29,7 +29,7 @@ static inline struct cros_ec_device *to_ec_dev(stru= ct device *dev) > return i2c_get_clientdata(client); > } > =20 > -static int cros_ec_command_xfer(struct cros_ec_device *ec_dev, > +static int cros_ec_cmd_xfer_i2c(struct cros_ec_device *ec_dev, > struct cros_ec_msg *msg) > { > struct i2c_client *client =3D ec_dev->priv; > @@ -136,7 +136,7 @@ static int cros_ec_i2c_probe(struct i2c_client *c= lient, > ec_dev->dev =3D dev; > ec_dev->priv =3D client; > ec_dev->irq =3D client->irq; > - ec_dev->command_xfer =3D cros_ec_command_xfer; > + ec_dev->cmd_xfer =3D cros_ec_cmd_xfer_i2c; > ec_dev->ec_name =3D client->name; > ec_dev->phys_name =3D client->adapter->name; > ec_dev->parent =3D &client->dev; > diff --git a/drivers/mfd/cros_ec_spi.c b/drivers/mfd/cros_ec_spi.c > index 0b8d328..52d4d7b 100644 > --- a/drivers/mfd/cros_ec_spi.c > +++ b/drivers/mfd/cros_ec_spi.c > @@ -73,7 +73,7 @@ > * if no record > * @end_of_msg_delay: used to set the delay_usecs on the spi_transfe= r that > * is sent when we want to turn off CS at the end of a transact= ion. > - * @lock: mutex to ensure only one user of cros_ec_command_spi_xfer = at a time > + * @lock: mutex to ensure only one user of cros_ec_cmd_xfer_spi at a= time > */ > struct cros_ec_spi { > struct spi_device *spi; > @@ -210,13 +210,13 @@ static int cros_ec_spi_receive_response(struct = cros_ec_device *ec_dev, > } > =20 > /** > - * cros_ec_command_spi_xfer - Transfer a message over SPI and receiv= e the reply > + * cros_ec_cmd_xfer_spi - Transfer a message over SPI and receive th= e reply > * > * @ec_dev: ChromeOS EC device > * @ec_msg: Message to transfer > */ > -static int cros_ec_command_spi_xfer(struct cros_ec_device *ec_dev, > - struct cros_ec_msg *ec_msg) > +static int cros_ec_cmd_xfer_spi(struct cros_ec_device *ec_dev, > + struct cros_ec_msg *ec_msg) > { > struct cros_ec_spi *ec_spi =3D ec_dev->priv; > struct spi_transfer trans; > @@ -372,7 +372,7 @@ static int cros_ec_spi_probe(struct spi_device *s= pi) > ec_dev->dev =3D dev; > ec_dev->priv =3D ec_spi; > ec_dev->irq =3D spi->irq; > - ec_dev->command_xfer =3D cros_ec_command_spi_xfer; > + ec_dev->cmd_xfer =3D cros_ec_cmd_xfer_spi; > ec_dev->ec_name =3D ec_spi->spi->modalias; > ec_dev->phys_name =3D dev_name(&ec_spi->spi->dev); > ec_dev->parent =3D &ec_spi->spi->dev; > diff --git a/include/linux/mfd/cros_ec.h b/include/linux/mfd/cros_ec.= h > index 2ee3190..79a3585 100644 > --- a/include/linux/mfd/cros_ec.h > +++ b/include/linux/mfd/cros_ec.h > @@ -16,7 +16,9 @@ > #ifndef __LINUX_MFD_CROS_EC_H > #define __LINUX_MFD_CROS_EC_H > =20 > +#include > #include > +#include > =20 > /* > * Command interface between EC and AP, for LPC, I2C and SPI interfa= ces. > @@ -55,34 +57,53 @@ struct cros_ec_msg { > /** > * struct cros_ec_device - Information about a ChromeOS EC device > * > + * @ec_name: name of EC device (e.g. 'chromeos-ec') > + * @phys_name: name of physical comms layer (e.g. 'i2c-4') > + * @dev: Device pointer > + * @was_wake_device: true if this device was set to wake the system = from > + * sleep at the last suspend > + * @event_notifier: interrupt event notifier for transport devices > + * @command_send: send a command > + * @command_recv: receive a response > + * @command_sendrecv: send a command and receive a response > + * > * @name: Name of this EC interface > * @priv: Private data > * @irq: Interrupt to use > - * @din: input buffer (from EC) > - * @dout: output buffer (to EC) > + * @din: input buffer (for data from EC) > + * @dout: output buffer (for data to EC) > * \note > * These two buffers will always be dword-aligned and include enough > * space for up to 7 word-alignment bytes also, so we can ensure tha= t > * the body of the message is always dword-aligned (64-bit). > - * > * We use this alignment to keep ARM and x86 happy. Probably word > * alignment would be OK, there might be a small performance advanta= ge > * to using dword. > * @din_size: size of din buffer to allocate (zero to use static din= ) > * @dout_size: size of dout buffer to allocate (zero to use static d= out) > - * @command_send: send a command > - * @command_recv: receive a command > - * @ec_name: name of EC device (e.g. 'chromeos-ec') > - * @phys_name: name of physical comms layer (e.g. 'i2c-4') > * @parent: pointer to parent device (e.g. i2c or spi device) > - * @dev: Device pointer > - * dev_lock: Lock to prevent concurrent access > * @wake_enabled: true if this device can wake the system from sleep > - * @was_wake_device: true if this device was set to wake the system = from > - * sleep at the last suspend > - * @event_notifier: interrupt event notifier for transport devices > + * @lock: one transaction at a time > + * @cmd_xfer: low-level channel to the EC > */ > struct cros_ec_device { > + > + /* These are used by other drivers that want to talk to the EC */ > + const char *ec_name; > + const char *phys_name; > + struct device *dev; > + bool was_wake_device; > + struct class *cros_class; > + struct blocking_notifier_head event_notifier; > + int (*command_send)(struct cros_ec_device *ec, > + uint16_t cmd, void *out_buf, int out_len); > + int (*command_recv)(struct cros_ec_device *ec, > + uint16_t cmd, void *in_buf, int in_len); > + int (*command_sendrecv)(struct cros_ec_device *ec, > + uint16_t cmd, void *out_buf, int out_len, > + void *in_buf, int in_len); > + > + /* These are used to implement the platform-specific interface */ > const char *name; > void *priv; > int irq; > @@ -90,26 +111,10 @@ struct cros_ec_device { > uint8_t *dout; > int din_size; > int dout_size; > - int (*command_send)(struct cros_ec_device *ec, > - uint16_t cmd, void *out_buf, int out_len); > - int (*command_recv)(struct cros_ec_device *ec, > - uint16_t cmd, void *in_buf, int in_len); > - int (*command_sendrecv)(struct cros_ec_device *ec, > - uint16_t cmd, void *out_buf, int out_len, > - void *in_buf, int in_len); > - int (*command_xfer)(struct cros_ec_device *ec, > - struct cros_ec_msg *msg); > - > - const char *ec_name; > - const char *phys_name; > struct device *parent; > - > - /* These are --private-- fields - do not assign */ > - struct device *dev; > - struct mutex dev_lock; > bool wake_enabled; > - bool was_wake_device; > - struct blocking_notifier_head event_notifier; > + struct mutex lock; > + int (*cmd_xfer)(struct cros_ec_device *ec, struct cros_ec_msg *msg)= ; > }; > =20 > /** --=20 Lee Jones Linaro STMicroelectronics Landing Team Lead Linaro.org =E2=94=82 Open source software for ARM SoCs =46ollow Linaro: Facebook | Twitter | Blog