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Message-ID: <20111115065043.GC9307@caracas.corpusers.net>
Date: Tue, 15 Nov 2011 07:50:43 +0100
From: <oskar.andero@...yericsson.com>
To: Shubhrajyoti Datta <omaplinuxkernel@...il.com>
CC: "dmitry.torokhov@...il.com" <dmitry.torokhov@...il.com>,
"linux-input@...r.kernel.org" <linux-input@...r.kernel.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
"jic23@....ac.uk" <jic23@....ac.uk>,
"aghayal@...eaurora.org" <aghayal@...eaurora.org>,
"Cavin, Courtney" <Courtney.Cavin@...yericsson.com>
Subject: Re: [PATCH v2] input: add driver support for Sharp gp2ap002a00f
proximity sensor
Hi Shubhrajyoti,
Thanks for reviewing!
On 17:52 Mon 14 Nov , Shubhrajyoti Datta wrote:
> Hi Courtney,
> Some minor comments
>
> On Mon, Nov 14, 2011 at 9:09 PM, <[1]oskar.andero@...yericsson.com>
> wrote:
>
> From: Courtney Cavin <[2]courtney.cavin@...yericsson.com>
> Signed-off-by: Courtney Cavin <[3]courtney.cavin@...yericsson.com>
> Signed-off-by: Oskar Andero <[4]oskar.andero@...yericsson.com>
> ---
> drivers/input/misc/Kconfig | 11 ++
> drivers/input/misc/Makefile | 1 +
> drivers/input/misc/gp2ap002a00f.c | 286
> ++++++++++++++++++++++++++++++++++++
> include/linux/input/gp2ap002a00f.h | 22 +++
> 4 files changed, 320 insertions(+), 0 deletions(-)
> create mode 100644 drivers/input/misc/gp2ap002a00f.c
> create mode 100644 include/linux/input/gp2ap002a00f.h
> diff --git a/drivers/input/misc/Kconfig b/drivers/input/misc/Kconfig
> index 22d875f..dee96a0 100644
> --- a/drivers/input/misc/Kconfig
> +++ b/drivers/input/misc/Kconfig
> @@ -544,4 +544,15 @@ config INPUT_XEN_KBDDEV_FRONTEND
> To compile this driver as a module, choose M here: the
> module will be called xen-kbdfront.
> +config INPUT_GP2A
> + tristate "Sharp GP2AP002A00F I2C Proximity/Opto sensor
> driver"
> + depends on I2C
> + default n
>
> you may want to drop it as default is anyways n.
>
> + help
> + Say Y here if you have a Sharp GP2AP002A00F proximity/als
> combo-chip
> + hooked to an I2C bus.
> +
> + To compile this driver as a module, choose M here: the
> + module will be called gp2ap002a00f.
> +
> endif
> diff --git a/drivers/input/misc/Makefile
> b/drivers/input/misc/Makefile
> index a244fc6..1681993 100644
> --- a/drivers/input/misc/Makefile
> +++ b/drivers/input/misc/Makefile
> @@ -22,6 +22,7 @@ obj-$(CONFIG_INPUT_CMA3000) +=
> cma3000_d0x.o
> obj-$(CONFIG_INPUT_CMA3000_I2C) += cma3000_d0x_i2c.o
> obj-$(CONFIG_INPUT_COBALT_BTNS) += cobalt_btns.o
> obj-$(CONFIG_INPUT_DM355EVM) += dm355evm_keys.o
> +obj-$(CONFIG_INPUT_GP2A) += gp2ap002a00f.o
> obj-$(CONFIG_HP_SDC_RTC) += hp_sdc_rtc.o
> obj-$(CONFIG_INPUT_IXP4XX_BEEPER) += ixp4xx-beeper.o
> obj-$(CONFIG_INPUT_KEYSPAN_REMOTE) += keyspan_remote.o
> diff --git a/drivers/input/misc/gp2ap002a00f.c
> b/drivers/input/misc/gp2ap002a00f.c
> new file mode 100644
> index 0000000..1c5ddf8
> --- /dev/null
> +++ b/drivers/input/misc/gp2ap002a00f.c
> @@ -0,0 +1,286 @@
> +/*
> + * Copyright (C) 2009,2010 Sony Ericsson Mobile Communications Inc.
>
> May want to check the year.
>
> + *
> + * Author: Courtney Cavin <[5]courtney.cavin@...yericsson.com>
> + * Prepared for up-stream by: Oskar Andero
> <[6]oskar.andero@...yericsson.com>
>
> + *
> + * This program is free software; you can redistribute it and/or
> modify
> + * it under the terms of the GNU General Public License version 2,
> as
> + * published by the Free Software Foundation.
> + */
> +
> +#include <linux/i2c.h>
> +#include <linux/irq.h>
> +#include <linux/slab.h>
> +#include <linux/input.h>
> +#include <linux/module.h>
> +#include <linux/workqueue.h>
>
> Are all these header files needed?
>
> +#include <linux/interrupt.h>
> +#include <linux/gpio.h>
> +#include <linux/delay.h>
> +#include <linux/input/gp2ap002a00f.h>
> +
> +struct gp2a_data {
> + struct input_dev *device;
> + const struct gp2a_platform_data *pdata;
> + struct i2c_client *i2c_client;
> +};
> +
> +enum gp2a_addr {
> + GP2A_ADDR_PROX = 0x0,
> + GP2A_ADDR_GAIN = 0x1,
> + GP2A_ADDR_HYS = 0x2,
> + GP2A_ADDR_CYCLE = 0x3,
> + GP2A_ADDR_OPMOD = 0x4,
> + GP2A_ADDR_CON = 0x6
> +};
> +
> +enum gp2a_controls {
> + GP2A_CTRL_SSD = 0x01
>
> Not a comment really
> Could you explain SSD?
SSD means Software shutdown according to the datasheet where 0 puts the
chip in shutdown and 1 in normal operation. I'll add a comment in the code.
-Oskar
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