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ARM: 6162/1: at91sam9g20ek: add fixed-value regulator for wm8731 

If CONFIG_REGULATOR is enabled, wm8731 fails on AT91SAM9G20EK board,
since codec driver requires several voltage supplies and none are
provided currently. As requires voltages are hardwired to 3V3, use fixed
voltage regulator for this chip.

Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Acked-by: Andrew Victor <linux@maxim.org.za>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Dmitry Eremin-Solenikov 2010-06-03 13:56:32 +01:00 committed by Russell King
parent 4f4c5e36e7
commit 5e886f68e5
1 changed files with 45 additions and 0 deletions
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45
arch/arm/mach-at91/board-sam9g20ek.c
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@ -27,6 +27,9 @@
#include <linux/gpio_keys.h>
#include <linux/input.h>
#include <linux/clk.h>
#include <linux/regulator/machine.h>
#include <linux/regulator/fixed.h>
#include <linux/regulator/consumer.h>
#include <mach/hardware.h>
#include <asm/setup.h>
@ -269,6 +272,46 @@ static void __init ek_add_device_buttons(void)
static void __init ek_add_device_buttons(void) {}
#endif
#if defined(CONFIG_REGULATOR_FIXED_VOLTAGE) || defined(CONFIG_REGULATOR_FIXED_VOLTAGE_MODULE)
static struct regulator_consumer_supply ek_audio_consumer_supplies[] = {
REGULATOR_SUPPLY("AVDD", "0-001b"),
REGULATOR_SUPPLY("HPVDD", "0-001b"),
REGULATOR_SUPPLY("DBVDD", "0-001b"),
REGULATOR_SUPPLY("DCVDD", "0-001b"),
};
static struct regulator_init_data ek_avdd_reg_init_data = {
.constraints = {
.name = "3V3",
.valid_ops_mask = REGULATOR_CHANGE_STATUS,
},
.consumer_supplies = ek_audio_consumer_supplies,
.num_consumer_supplies = ARRAY_SIZE(ek_audio_consumer_supplies),
};
static struct fixed_voltage_config ek_vdd_pdata = {
.supply_name = "board-3V3",
.microvolts = 3300000,
.gpio = -EINVAL,
.enabled_at_boot = 0,
.init_data = &ek_avdd_reg_init_data,
};
static struct platform_device ek_voltage_regulator = {
.name = "reg-fixed-voltage",
.id = -1,
.num_resources = 0,
.dev = {
.platform_data = &ek_vdd_pdata,
},
};
static void __init ek_add_regulators(void)
{
platform_device_register(&ek_voltage_regulator);
}
#else
static void __init ek_add_regulators(void) {}
#endif
static struct i2c_board_info __initdata ek_i2c_devices[] = {
{
@ -294,6 +337,8 @@ static void __init ek_board_init(void)
ek_add_device_nand();
/* Ethernet */
at91_add_device_eth(&ek_macb_data);
/* Regulators */
ek_add_regulators();
/* MMC */
at91_add_device_mmc(0, &ek_mmc_data);
/* I2C */