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Message-ID: <20101020085517.GG28166@pengutronix.de>
Date: Wed, 20 Oct 2010 10:55:17 +0200
From: Uwe Kleine-König
<u.kleine-koenig@...gutronix.de>
To: Dinh.Nguyen@...escale.com
Cc: linux-kernel@...r.kernel.org, amit.kucheria@...onical.com,
linux@....linux.org.uk, s.hauer@...gutronix.de,
grant.likely@...retlab.ca, linux-arm-kernel@...ts.infradead.org,
daniel@...aq.de, xiao-lizhang@...escale.com,
valentin.longchamp@...l.ch
Subject: Re: [PATCHv3 1/2] ARM: imx: Add gpio-keys to mx51 babbage board
On Tue, Oct 19, 2010 at 01:39:51PM -0500, Dinh.Nguyen@...escale.com wrote:
> From: Dinh Nguyen <Dinh.Nguyen@...escale.com>
>
> Add functionality for the power button on MX51 Babbage board.
>
> This patch is based on Sascha Hauer's imx/linux-2.6 for-rmk tree.
>
> Signed-off-by: Dinh Nguyen <Dinh.Nguyen@...escale.com>
> ---
> arch/arm/configs/mx51_defconfig | 1 +
> arch/arm/mach-mx5/board-mx51_babbage.c | 35 +++++++++++++++++++++++++++
> arch/arm/plat-mxc/include/mach/iomux-mx51.h | 2 +-
> 3 files changed, 37 insertions(+), 1 deletions(-)
>
> diff --git a/arch/arm/configs/mx51_defconfig b/arch/arm/configs/mx51_defconfig
> index 163cfee..5c7a872 100644
> --- a/arch/arm/configs/mx51_defconfig
> +++ b/arch/arm/configs/mx51_defconfig
> @@ -82,6 +82,7 @@ CONFIG_FEC=y
> CONFIG_INPUT_FF_MEMLESS=m
> # CONFIG_INPUT_MOUSEDEV_PSAUX is not set
> CONFIG_INPUT_EVDEV=y
> +CONFIG_KEYBOARD_GPIO=y
> CONFIG_INPUT_EVBUG=m
> CONFIG_MOUSE_PS2=m
> CONFIG_MOUSE_PS2_ELANTECH=y
> diff --git a/arch/arm/mach-mx5/board-mx51_babbage.c b/arch/arm/mach-mx5/board-mx51_babbage.c
> index 23ee4a4..20e9d13 100644
> --- a/arch/arm/mach-mx5/board-mx51_babbage.c
> +++ b/arch/arm/mach-mx5/board-mx51_babbage.c
> @@ -18,6 +18,8 @@
> #include <linux/io.h>
> #include <linux/fsl_devices.h>
> #include <linux/fec.h>
> +#include <linux/gpio_keys.h>
> +#include <linux/input.h>
>
> #include <mach/common.h>
> #include <mach/hardware.h>
> @@ -37,6 +39,7 @@
> #define BABBAGE_USBH1_STP (0*32 + 27) /* GPIO_1_27 */
> #define BABBAGE_PHY_RESET (1*32 + 5) /* GPIO_2_5 */
> #define BABBAGE_FEC_PHY_RESET (1*32 + 14) /* GPIO_2_14 */
> +#define BABBAGE_POWER_KEY (1*32 + 21) /* GPIO_2_21 */
>
> /* USB_CTRL_1 */
> #define MX51_USB_CTRL_1_OFFSET 0x10
> @@ -46,6 +49,34 @@
> #define MX51_USB_PLL_DIV_19_2_MHZ 0x01
> #define MX51_USB_PLL_DIV_24_MHZ 0x02
>
> +static struct gpio_keys_button babbage_buttons[] = {
> + {
> + .gpio = BABBAGE_POWER_KEY,
> + .code = BTN_0,
> + .desc = "PWR",
> + .active_low = 1,
> + .wakeup = 1,
> + },
> +};
> +
> +static struct gpio_keys_platform_data babbage_button_data = {
> + .buttons = babbage_buttons,
> + .nbuttons = ARRAY_SIZE(babbage_buttons),
> +};
> +
> +static struct platform_device babbage_button_device = {
> + .name = "gpio-keys",
> + .id = -1,
> + .num_resources = 0,
> + .dev = {
> + .platform_data = &babbage_button_data,
> + }
> +};
> +
> +static struct platform_device *platform_devices[] __initdata = {
> + &babbage_button_device,
> +};
> +
> static struct pad_desc mx51babbage_pads[] = {
> /* UART1 */
> MX51_PAD_UART1_RXD__UART1_RXD,
> @@ -112,6 +143,9 @@ static struct pad_desc mx51babbage_pads[] = {
>
> /* FEC PHY reset line */
> MX51_PAD_EIM_A20__GPIO_2_14,
> +
> + /* Power Key */
> + MX51_PAD_EIM_A27__GPIO_2_21,
> };
>
> /* Serial ports */
> @@ -285,6 +319,7 @@ static void __init mxc_board_init(void)
> mxc_iomux_v3_setup_multiple_pads(mx51babbage_pads,
> ARRAY_SIZE(mx51babbage_pads));
> mxc_init_imx_uart();
> + platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices));
would you mind to rework that to a function à la imx_add_fec?
> babbage_fec_reset();
> imx51_add_fec(NULL);
>
> diff --git a/arch/arm/plat-mxc/include/mach/iomux-mx51.h b/arch/arm/plat-mxc/include/mach/iomux-mx51.h
> index e46b1c2..2699262 100644
> --- a/arch/arm/plat-mxc/include/mach/iomux-mx51.h
> +++ b/arch/arm/plat-mxc/include/mach/iomux-mx51.h
> @@ -114,7 +114,7 @@ typedef enum iomux_config {
> #define MX51_PAD_EIM_A24__GPIO_2_18 IOMUX_PAD(0x450, 0x0bc, 1, 0x0, 0, NO_PAD_CTRL)
> #define MX51_PAD_EIM_A25__GPIO_2_19 IOMUX_PAD(0x454, 0x0c0, 1, 0x0, 0, NO_PAD_CTRL)
> #define MX51_PAD_EIM_A26__GPIO_2_20 IOMUX_PAD(0x458, 0x0c4, 1, 0x0, 0, NO_PAD_CTRL)
> -#define MX51_PAD_EIM_A27__GPIO_2_21 IOMUX_PAD(0x45c, 0x0c8, 1, 0x0, 0, NO_PAD_CTRL)
> +#define MX51_PAD_EIM_A27__GPIO_2_21 IOMUX_PAD(0x45c, 0x0c8, 1, 0x0, 0, MX51_I2C_PAD_CTRL)
MX51_I2C_PAD_CTRL looks wrong here. IIRC I already asked about this.
> #define MX51_PAD_EIM_EB0__EIM_EB0 IOMUX_PAD(0x460, 0x0cc, 0, 0x0, 0, NO_PAD_CTRL)
> #define MX51_PAD_EIM_EB1__EIM_EB1 IOMUX_PAD(0x464, 0x0d0, 0, 0x0, 0, NO_PAD_CTRL)
> #define MX51_PAD_EIM_EB2__GPIO_2_22 IOMUX_PAD(0x468, 0x0d4, 1, 0x0, 0, NO_PAD_CTRL)
> --
> 1.6.0.4
>
>
>
> _______________________________________________
> linux-arm-kernel mailing list
> linux-arm-kernel@...ts.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
>
--
Pengutronix e.K. | Uwe Kleine-König |
Industrial Linux Solutions | http://www.pengutronix.de/ |
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