2011-05-07 02:39:12     AD714x configuration issue

2011-05-07 02:39:12     AD714x configuration issue

Chandrashekhar Lavania (INDIA)

Message: 100495   

Hi,

I am using AD7147 Touch Cap in my UI board. I am using 2010R1-RC5 with my BF527 based board. I am trying to configure my AD714x module by adding entries in the platform file for it. But, I have some doubts.

1. In the file include/linux/input/ad714x.h :

struct ad714x_button_plat {

int keycode;

unsigned short l_mask;

unsigned short h_mask;

};

What does the l_mask and h_mask represent and how do I configure these values in my platform file for the buttons. There must be a rule which is followed to assign values to these masks.

I am following   wiki.analog.com/resources/tools-software/linux-drivers/input-misc/ad714x .

But I was unable to find  the explanation for these masks.

I am using an I2C based Touch Cap.

Regards,

Shekhar

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2011-05-09 02:15:16     Re: AD714x configuration issue

Sonic Zhang (CHINA)

Message: 100502   

Please refer to code at drivers/input/misc/ad714x.c:239 . h_mask and l_mask maps CDCs' positive and negative status to a button index. h_mask masks position bits and l_mask masks negative bits.

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2011-05-09 05:30:57     Re: AD714x configuration issue

Chandrashekhar Lavania (INDIA)

Message: 100512   

Hi,

Just wanted to clarify...

If I want to attach a button to say.......positive of stage 5. Then does it mean that the masks for that button are as follows..

h_mask = 0x20 ( binary is 0000 0000 0010 0000)

l_mask = 0

Regards,

Shekhar

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2011-05-09 05:37:58     Re: AD714x configuration issue

Michael Hennerich (GERMANY)

Message: 100513    > If I want to attach a button to say.......positive of stage 5. Then

> does it mean that the masks for that button are as follows..

>

> h_mask = 0x20 ( binary is 0000 0000 0010 0000)

>

> l_mask = 0

Exactly - that's the case.

You must also provide stage_cfg_reg and sys_cfg_reg.

Below you can find a platform config for a 8 stage (stages 0..7) wheel and 4 buttons (stages 8,10,11,12).

  www.analog.com/static/imported-files/eval_kit_manuals/Blackfin_Lndscpe_LCD_EZ_Extender_Manual_Rev.1.0_Aug08.pdf

#if defined(CONFIG_INPUT_AD714X_I2C) || defined(CONFIG_INPUT_AD714X_I2C_MODULE)

#include <linux/input/ad714x.h>

static struct ad714x_button_plat ad7147_button_plat[] = {

{

.keycode = BTN_1,

.l_mask = 0,

.h_mask = 0x100,

},

{

.keycode = BTN_2,

.l_mask = 0,

.h_mask = 0x200,

},

{

.keycode = BTN_3,

.l_mask = 0,

.h_mask = 0x400,

},

{

.keycode = BTN_4,

.l_mask = 0x0,

.h_mask = 0x800,

},

};

static struct ad714x_wheel_plat ad7147_wheel_plat = {

.start_stage = 0,

.end_stage = 7,

.max_coord = 1024,

};

static struct ad714x_slider_plat ad7147_slider_plat = {

.start_stage = 0,

.end_stage = 7,

.max_coord = 128,

};

static struct ad714x_platform_data wheel_dev_platform_data = {

.wheel_num = 0,

.button_num = 4,

.slider_num = 1,

.slider = &ad7147_slider_plat,

.button = ad7147_button_plat,

.wheel = &ad7147_wheel_plat,

.stage_cfg_reg = {

{0xEFFF, 0x1FFF, 0x0000, 0x2626, 2920, 2920, 3650, 3650},

{0xFFFF, 0x1FFE, 0x0000, 0x2626, 2920, 2920, 3650, 3650},

{0xFFFF, 0x1FFB, 0x0000, 0x2626, 2920, 2920, 3650, 3650},

{0xFFFF, 0x1FEF, 0x0000, 0x2626, 2920, 2920, 3650, 3650},

{0xFFFF, 0x1FBF, 0x0000, 0x2626, 2920, 2920, 3650, 3650},

{0xFFFF, 0x1EFF, 0x0000, 0x2626, 2920, 2920, 3650, 3650},

{0xFEFF, 0x1FFF, 0x0000, 0x2626, 2920, 2920, 3650, 3650},

{0xFBFF, 0x1FFF, 0x0000, 0x2626, 2920, 2920, 3650, 3650},

{0xFFFE, 0x1FFF, 0x0000, 0x2626, 5664, 5664, 7080, 7080},

{0xFFFB, 0x1FFF, 0x0000, 0x2626, 5664, 5664, 7080, 7080},

{0xFFEF, 0x1FFF, 0x0000, 0x2626, 5664, 5664, 7080, 7080},

{0xFFBF, 0x1FFF, 0x0000, 0x2626, 5664, 5664, 7080, 7080},

},

.sys_cfg_reg = {0x00B2, 0x0, 0x3230, 0x0819, 0x0832, 0x0FFF, 0x0FFF, 0x0000}, }; #endif

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2011-05-17 06:30:40     Re: AD714x configuration issue

Chandrashekhar Lavania (INDIA)

Message: 100691   

Hi,

Since the Touch Cap module I use is based on the Ez-Extender, I used the following configuration::

static struct ad714x_button_plat ad7147_button_plat[] = {

{

.keycode = BTN_BASE,

.l_mask = 0,

.h_mask = 0x100,

},

{

.keycode = BTN_BASE2,

.l_mask = 0,

.h_mask = 0x200,

},

{

.keycode = BTN_BASE3,

.l_mask = 0,

.h_mask = 0x400,

},

{

.keycode = BTN_BASE4,

.l_mask = 0x0,

.h_mask = 0x800,

},

};

static struct ad714x_wheel_plat ad7147_wheel_plat = {

.start_stage = 0,

.end_stage = 7,

.max_coord = 1024,

};

static struct ad714x_platform_data touch_dev_platform_data = {

.wheel_num = 1,

.button_num = 4,

.slider_num = 0,

.slider = &ad7147_slider_plat,

.button = ad7147_button_plat,

.wheel = &ad7147_wheel_plat,

.stage_cfg_reg = {

{0xFEFF, 0x1FFF, 0x0000, 0x2626, 2920, 2920, 3650, 3650}, // CIN4 to STAGE0

{0xFBFF, 0x1FFF, 0x0000, 0x2626, 2920, 2920, 3650, 3650}, // CIN5 to STAGE1

{0xEFFF, 0x1FFF, 0x0000, 0x2626, 2920, 2920, 3650, 3650}, // CIN6 to STAGE2

{0xFFFF, 0x1FFE, 0x0000, 0x2626, 2920, 2920, 3650, 3650}, // CIN7 to STAGE3

{0xFFFF, 0x1FFB, 0x0000, 0x2626, 2920, 2920, 3650, 3650}, // CIN8 to STAGE4

{0xFFFF, 0x1FEF, 0x0000, 0x2626, 2920, 2920, 3650, 3650}, // CIN9 to STAGE5

{0xFFFF, 0x1FBF, 0x0000, 0x2626, 2920, 2920, 3650, 3650}, // CIN10 to STAGE6

{0xFFFF, 0x1EFF, 0x0000, 0x2626, 2920, 2920, 3650, 3650}, // CIN11 to STAGE7

{0xFFFE, 0x1FFF, 0x0000, 0x2626, 5664, 5664, 7080, 7080}, // CIN0 to STAGE8

{0xFFFB, 0x1FFF, 0x0000, 0x2626, 5664, 5664, 7080, 7080}, // CIN1 to STAGE9

{0xFFEF, 0x1FFF, 0x0000, 0x2626, 5664, 5664, 7080, 7080}, // CIN2 to STAGE10

{0xFFBF, 0x1FFF, 0x0000, 0x2626, 5664, 5664, 7080, 7080}, // CIN3 to STAGE11

},

.sys_cfg_reg = {0x00B2, 0x0, 0x3230, 0x0819, 0x0832, 0x0FFF, 0x0FFF, 0x0000},

};

When I do this then the push buttons ( CIN0 to CIN3) work fine but the wheel doesen't even respond. I tested it using the event_test utility.

What might be the issue??

Regards,

Shekhar

PS: If I map the the 8 sensors as seperate buttons instead of a wheel, then they seem to be working fine..i.e I get an event when I touch one of these buttons

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2011-05-17 07:12:46     Re: AD714x configuration issue

Michael Hennerich (GERMANY)

Message: 100692    Please try this patchset.

https://patchwork.kernel.org/project/linux-input/list/

[v2,6/6] input: misc: AD714x: Fix endianness issues

[v2,5/6] input: misc: AD714x: Fix captouch wheel option algorithm

[v2,4/6] input: misc: AD714x: Add option to specify irqflags

[v2,3/6] input: misc: AD714x: Fix thresh and completion interrupt mask and unmask functions

[v2,2/6] input: misc: AD714x: Fix up input configuration

[v2,1/6] input: misc: AD714x: The interrupt status registers should be read in row.