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Commit ca0a6a64 authored by Steve Sakoman's avatar Steve Sakoman Committed by Tomi Valkeinen
Browse files

omap: overo: Add regulator for ads7846 



The ads7846 driver now requires a regulator.  This patch adds the
necessary regulator to the overo board file.  Without it, the
following error occurs (and the touchscreen will not function):

ads7846 spi1.0: unable to get regulator: -19

Signed-off-by: default avatarSteve Sakoman <steve@sakoman.com>
Acked-by: default avatarTony Lindgren <tony@atomide.com>
Signed-off-by: default avatarTomi Valkeinen <tomi.valkeinen@ti.com>
parent ea75159e

arch/arm/mach-omap2/board-overo.c

+31 −0
Original line number Diff line number Diff line
@@ -28,6 +28,7 @@ 
#include <linux/platform_device.h>

#include <linux/i2c/twl.h>

#include <linux/regulator/machine.h>

#include <linux/regulator/fixed.h>

#include <linux/spi/spi.h>



#include <linux/mtd/mtd.h>
@@ -97,6 +98,34 @@ static struct ads7846_platform_data ads7846_config = { 
	.keep_vref_on		= 1,

};



/* fixed regulator for ads7846 */

static struct regulator_consumer_supply ads7846_supply =

	REGULATOR_SUPPLY("vcc", "spi1.0");



static struct regulator_init_data vads7846_regulator = {

	.constraints = {

		.valid_ops_mask		= REGULATOR_CHANGE_STATUS,

	},

	.num_consumer_supplies	= 1,

	.consumer_supplies	= &ads7846_supply,

};



static struct fixed_voltage_config vads7846 = {

	.supply_name		= "vads7846",

	.microvolts		= 3300000, /* 3.3V */

	.gpio			= -EINVAL,

	.startup_delay		= 0,

	.init_data		= &vads7846_regulator,

};



static struct platform_device vads7846_device = {

	.name		= "reg-fixed-voltage",

	.id		= 1,

	.dev = {

		.platform_data = &vads7846,

	},

};



static void __init overo_ads7846_init(void)

{

	if ((gpio_request(OVERO_GPIO_PENDOWN, "ADS7846_PENDOWN") == 0) &&
@@ -106,6 +135,8 @@ static void __init overo_ads7846_init(void) 
		printk(KERN_ERR "could not obtain gpio for ADS7846_PENDOWN\n");

		return;

	}



	platform_device_register(&vads7846_device);

}



#else