On Wed, Jun 25, 2008 at 8:43 PM, Miguel Angel Aguilar Ulloa
<miguel.aguilar@xxxxxxxxxxxx> wrote:
> 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
>>> },
>>> };
>>>
Yes option is there to add sw3 to key matrix. So we have a total of 16
keys, then
why there are more no of keys(30keys) in omap3evm_keymap[] array?
>>> +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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