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omap: overo: Add regulator for ads7846

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sakoman committed Feb 26, 2011
1 parent bab61c9 commit 07c0fb9a3312c9e710a1aab9b528ea45db615495
Showing with 31 additions and 0 deletions.
  1. +31 −0 arch/arm/mach-omap2/board-overo.c
@@ -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,
};
+/* dummy 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

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