[PATCH v4 2/3] ARM: S5PV210: Add keypad device helpers

[Kukjin Kim]

Joonyoung Shim wrote:
> 
> This patch adds the keypad device platform helpers for S5PV210 cpu.
> 
> Signed-off-by: Joonyoung Shim <jy0922.shim at samsung.com>
> Signed-off-by: Kyungmin Park <kyungmin.park at samsung.com>
> ---
>  arch/arm/mach-s5pv210/Kconfig            |    5 ++++
>  arch/arm/mach-s5pv210/Makefile           |    1 +
>  arch/arm/mach-s5pv210/cpu.c              |    4 +++
>  arch/arm/mach-s5pv210/include/mach/map.h |    3 ++
>  arch/arm/mach-s5pv210/setup-keypad.c     |   34
> ++++++++++++++++++++++++++++++
>  5 files changed, 47 insertions(+), 0 deletions(-)
>  create mode 100644 arch/arm/mach-s5pv210/setup-keypad.c
> 
> diff --git a/arch/arm/mach-s5pv210/Kconfig b/arch/arm/mach-s5pv210/Kconfig
> index 0761eac..692d01c 100644
> --- a/arch/arm/mach-s5pv210/Kconfig
> +++ b/arch/arm/mach-s5pv210/Kconfig
> @@ -32,6 +32,11 @@ config S5PV210_SETUP_FB_24BPP
>  	help
>            Common setup code for S5PV210 with an 24bpp RGB display helper.
> 
> +config S5PV210_SETUP_KEYPAD
> +	bool
> +	help
> +	  Common setup code for keypad.
> +
>  config S5PV210_SETUP_SDHCI
>          bool
>          select S5PV210_SETUP_SDHCI_GPIO
> diff --git a/arch/arm/mach-s5pv210/Makefile
b/arch/arm/mach-s5pv210/Makefile
> index 30be9a6..aae592a 100644
> --- a/arch/arm/mach-s5pv210/Makefile
> +++ b/arch/arm/mach-s5pv210/Makefile
> @@ -31,5 +31,6 @@ obj-$(CONFIG_S5PC110_DEV_ONENAND) += dev-onenand.o
>  obj-$(CONFIG_S5PV210_SETUP_FB_24BPP)	+= setup-fb-24bpp.o
>  obj-$(CONFIG_S5PV210_SETUP_I2C1) 	+= setup-i2c1.o
>  obj-$(CONFIG_S5PV210_SETUP_I2C2) 	+= setup-i2c2.o
> +obj-$(CONFIG_S5PV210_SETUP_KEYPAD)	+= setup-keypad.o
>  obj-$(CONFIG_S5PV210_SETUP_SDHCI)       += setup-sdhci.o
>  obj-$(CONFIG_S5PV210_SETUP_SDHCI_GPIO)	+= setup-sdhci-gpio.o
> diff --git a/arch/arm/mach-s5pv210/cpu.c b/arch/arm/mach-s5pv210/cpu.c
> index 411a4a9..a3034ac 100644
> --- a/arch/arm/mach-s5pv210/cpu.c
> +++ b/arch/arm/mach-s5pv210/cpu.c
> @@ -80,6 +80,10 @@ void __init s5pv210_map_io(void)
>  	s3c_device_adc.name	= "s3c64xx-adc";
>  #endif
> 
> +#ifdef CONFIG_SAMSUNG_DEV_KEYPAD
> +	samsung_device_keypad.name = "s5pv210-keypad";
> +#endif
> +

Please use one method. See Kyungmin Park's prev. comments on the subject.

>  	iotable_init(s5pv210_iodesc, ARRAY_SIZE(s5pv210_iodesc));
> 
>  	/* initialise device information early */
> diff --git a/arch/arm/mach-s5pv210/include/mach/map.h b/arch/arm/mach-
> s5pv210/include/mach/map.h
> index 34eb168..e2f6e2a 100644
> --- a/arch/arm/mach-s5pv210/include/mach/map.h
> +++ b/arch/arm/mach-s5pv210/include/mach/map.h
> @@ -32,6 +32,8 @@
>  #define S5PV210_PA_SPI0		0xE1300000
>  #define S5PV210_PA_SPI1		0xE1400000
> 
> +#define S5PV210_PA_KEYPAD	(0xE1600000)
> +
>  #define S5PV210_PA_IIC0		(0xE1800000)
>  #define S5PV210_PA_IIC1		(0xFAB00000)
>  #define S5PV210_PA_IIC2		(0xE1A00000)
> @@ -104,5 +106,6 @@
>  #define S3C_PA_WDT		S5PV210_PA_WATCHDOG
> 
>  #define SAMSUNG_PA_ADC		S5PV210_PA_ADC
> +#define SAMSUNG_PA_KEYPAD	S5PV210_PA_KEYPAD
> 
>  #endif /* __ASM_ARCH_MAP_H */
> diff --git a/arch/arm/mach-s5pv210/setup-keypad.c
b/arch/arm/mach-s5pv210/setup-
> keypad.c
> new file mode 100644
> index 0000000..f51bf8d
> --- /dev/null
> +++ b/arch/arm/mach-s5pv210/setup-keypad.c
> @@ -0,0 +1,34 @@
> +/*
> + * linux/arch/arm/mach-s5pv210/setup-keypad.c
> + *
> + * Copyright (C) 2010 Samsung Electronics Co.Ltd
> + * Author: Joonyoung Shim <jy0922.shim at samsung.com>
> + *
> + *  This program is free software; you can redistribute  it and/or modify
it
> + *  under  the terms of  the GNU General  Public License as published by
the
> + *  Free Software Foundation;  either version 2 of the  License, or (at
your
> + *  option) any later version.
> + *
> + */
> +
> +#include <linux/gpio.h>
> +#include <plat/gpio-cfg.h>
> +
> +void samsung_keypad_cfg_gpio(unsigned int rows, unsigned int cols)
> +{
> +	unsigned int gpio, end;
> +
> +	/* Set all the necessary GPH3 pins to special-function 3 */

What's the special-function 3?
How about 'special function KP_ROWs'?

> +	end = S5PV210_GPH3(rows);
> +	for (gpio = S5PV210_GPH3(0); gpio < end; gpio++) {
> +		s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(3));
> +		s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE);
> +	}
> +
> +	/* Set all the necessary GPH2 pins to special-function 3 */

How about 'special function KP_COLs'?

> +	end = S5PV210_GPH2(cols);
> +	for (gpio = S5PV210_GPH2(0); gpio < end; gpio++) {
> +		s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(3));
> +		s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE);
> +	}
> +}
> --


Thanks.

Best regards,
Kgene.
--
Kukjin Kim <kgene.kim at samsung.com>, Senior Engineer,
SW Solution Development Team, Samsung Electronics Co., Ltd.