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ARM: pxa: hx4700: Add Synaptics NavPoint touchpad 

This patch adds the Synaptics NavPoint touchpad to the hx4700 platform:
1. Change GPIO23_SSP1_SCLK value in hx4700_pin_config[] from an output
to an input, since the NavPoint is connected to SSP in SPI slave mode.
2. Add GPIO102_GPIO (NavPoint power) to hx4700_pin_config[].
3. Add navpoint platform_device to devices[].

Signed-off-by: Paul Parsons <lost.distance@yahoo.com>
Cc: Philipp Zabel <philipp.zabel@gmail.com>
Signed-off-by: Haojian Zhuang <haojian.zhuang@gmail.com>
This commit is contained in:
Paul Parsons 2012-05-12 12:31:02 +01:00 committed by Haojian Zhuang
parent 0bf189abc5
commit b2596c6828
2 changed files with 24 additions and 1 deletions
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24
arch/arm/mach-pxa/hx4700.c
View File

@ -22,6 +22,7 @@
#include <linux/gpio.h>
#include <linux/gpio_keys.h>
#include <linux/input.h>
#include <linux/input/navpoint.h>
#include <linux/lcd.h>
#include <linux/mfd/htc-egpio.h>
#include <linux/mfd/asic3.h>
@ -113,7 +114,7 @@ static unsigned long hx4700_pin_config[] __initdata = {
GPIO113_I2S_SYSCLK,
/* SSP 1 (NavPoint) */
GPIO23_SSP1_SCLK,
GPIO23_SSP1_SCLK_IN,
GPIO24_SSP1_SFRM,
GPIO25_SSP1_TXD,
GPIO26_SSP1_RXD,
@ -129,6 +130,9 @@ static unsigned long hx4700_pin_config[] __initdata = {
GPIO13_GPIO, /* W3220_IRQ */
GPIO14_GPIO, /* nWLAN_IRQ */
/* HX4700 specific output GPIOs */
GPIO102_GPIO | MFP_LPM_DRIVE_LOW, /* SYNAPTICS_POWER_ON */
GPIO10_GPIO, /* GSM_IRQ */
GPIO13_GPIO, /* CPLD_IRQ */
GPIO107_GPIO, /* DS1WM_IRQ */
@ -182,6 +186,23 @@ static struct platform_device gpio_keys = {
.id = -1,
};
/*
* Synaptics NavPoint connected to SSP1
*/
static struct navpoint_platform_data navpoint_platform_data = {
.port = 1,
.gpio = GPIO102_HX4700_SYNAPTICS_POWER_ON,
};
static struct platform_device navpoint = {
.name = "navpoint",
.id = -1,
.dev = {
.platform_data = &navpoint_platform_data,
},
};
/*
* ASIC3
*/
@ -823,6 +844,7 @@ static struct platform_device audio = {
static struct platform_device *devices[] __initdata = {
&asic3,
&gpio_keys,
&navpoint,
&backlight,
&w3220,
&hx4700_lcd,

1
arch/arm/mach-pxa/include/mach/mfp-pxa27x.h
View File

@ -208,6 +208,7 @@
#define GPIO113_I2S_SYSCLK MFP_CFG_OUT(GPIO113, AF1, DRIVE_LOW)
/* SSP 1 */
#define GPIO23_SSP1_SCLK_IN MFP_CFG_IN(GPIO23, AF2)
#define GPIO23_SSP1_SCLK MFP_CFG_OUT(GPIO23, AF2, DRIVE_LOW)
#define GPIO29_SSP1_SCLK MFP_CFG_IN(GPIO29, AF3)
#define GPIO27_SSP1_SYSCLK MFP_CFG_OUT(GPIO27, AF1, DRIVE_LOW)