Re: [PATCH 1/3] OMAP3 EVM: Add twl4030 keypad driver support

[Miguel Angel Aguilar Ulloa <miguel.aguilar@xxxxxxxxxxxx>]

The OMAP3 EVM has 15 keys arranged in a matrix from SW4 to SW18, but it also has 
a user key (power on/off) in SW3, this key is included in the keypad mapping. 
This is how mapping is done in an 4x4 array.

arun c wrote:
> On Tue, Jun 24, 2008 at 3:21 AM, Miguel Angel Aguilar Ulloa
> <miguel.aguilar@xxxxxxxxxxxx> wrote:
> > Add twl4030 keypad driver support to OMAP3 EVM
> >
> > Signed-off-by: Miguel Angel Aguilar <miguel.aguilar@xxxxxxxxxxxx>
> >
> > --- a/arch/arm/mach-omap2/board-omap3evm.c      2008-06-23
> > 15:07:13.000000000 -0600
> > +++ b/arch/arm/mach-omap2/board-omap3evm.c      2008-06-23
> > 14:32:29.000000000 -0600
> > @@ -19,6 +19,7 @@
> > #include <linux/err.h>
> > #include <linux/clk.h>
> > #include <linux/io.h>
> > +#include <linux/input.h>
> > #include <linux/spi/spi.h>
> > #include <linux/spi/ads7846.h>
> >
> > @@ -28,6 +29,7 @@
> > #include <asm/mach/map.h>
> >
> > #include <asm/arch/gpio.h>
> > +#include <asm/arch/keypad.h>
> > #include <asm/arch/board.h>
> > #include <asm/arch/hsmmc.h>
> > #include <asm/arch/usb-musb.h>
> > @@ -149,6 +151,56 @@ struct spi_board_info omap3evm_spi_board
> >        },
> > };
> >
> > +static int omap3evm_keymap[] = {
> > +       KEY(0, 0, KEY_LEFT),
> > +       KEY(0, 1, KEY_RIGHT),
> > +       KEY(0, 2, KEY_A),
> > +       KEY(0, 3, KEY_B),
> > +       KEY(0, 4, KEY_C),
> > +       KEY(1, 0, KEY_DOWN),
> > +       KEY(1, 1, KEY_UP),
> > +       KEY(1, 2, KEY_E),
> > +       KEY(1, 3, KEY_F),
> > +       KEY(1, 4, KEY_G),
> > +       KEY(2, 0, KEY_ENTER),
> > +       KEY(2, 1, KEY_I),
> > +       KEY(2, 2, KEY_J),
> > +       KEY(2, 3, KEY_K),
> > +       KEY(2, 4, KEY_3),
> > +       KEY(3, 0, KEY_M),
> > +       KEY(3, 1, KEY_N),
> > +       KEY(3, 2, KEY_O),
> > +       KEY(3, 3, KEY_P),
> > +       KEY(3, 4, KEY_Q),
> > +       KEY(4, 0, KEY_R),
> > +       KEY(4, 1, KEY_4),
> > +       KEY(4, 2, KEY_T),
> > +       KEY(4, 3, KEY_U),
> > +       KEY(4, 4, KEY_D),
> > +       KEY(5, 0, KEY_V),
> > +       KEY(5, 1, KEY_W),
> > +       KEY(5, 2, KEY_L),
> > +       KEY(5, 3, KEY_S),
> > +       KEY(5, 4, KEY_H),
> > +       0
> > +};
> > +
>
> Omap3evm has only 15 keys right?(Some body correct me if I am wrong).
> Then how the
> mapping and dividing into rows and columns is done?
>
> > +static struct omap_kp_platform_data omap3evm_kp_data = {
> > +       .rows           = 4,
> > +       .cols           = 4,
> > +       .keymap         = omap3evm_keymap,
> > +       .keymapsize     = ARRAY_SIZE(omap3evm_keymap),
> > +       .rep            = 1,
> > +};
> > +
> > +static struct platform_device omap3evm_kp_device = {
> > +       .name           = "omap_twl4030keypad",
> > +       .id             = -1,
> > +       .dev            = {
> > +                               .platform_data = &omap3evm_kp_data,
> > +                       },
> > +};
> > +
> > static void __init omap3_evm_init_irq(void)
> > {
> >        omap2_init_common_hw();
> > @@ -165,6 +217,7 @@ static struct omap_board_config_kernel o
> >
> > static struct platform_device *omap3_evm_devices[] __initdata = {
> >        &omap3_evm_lcd_device,
> > +       &omap3evm_kp_device,
> > #ifdef CONFIG_RTC_DRV_TWL4030
> >        &omap3_evm_twl4030rtc_device,
> > #endif
> > --
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--
Miguel Angel Aguilar Ulloa
Embedded Software Engineer
RidgeRun Embedded Solutions
miguel.aguilar@xxxxxxxxxxxx
Office: +(506) 2225-9596
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