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| author |   Steve Sakoman <steve@sakoman.com> | 2011-03-05 10:12:26 -0600 |
|---|---|---|
| committer |   Tomi Valkeinen <tomi.valkeinen@ti.com> | 2011-03-11 15:46:31 +0200 |
| commit | ca0a6a6473f69f1773c97755840587262d841883 (patch) | |
| tree | 9bc2076278724f5b1632ad7b3e9b4130538fe781 /arch/arm/mach-omap2 | |
| parent | OMAP4: DSS2: Clock source changes for OMAP4 (diff) | |
| download | linux-dev-ca0a6a6473f69f1773c97755840587262d841883.tar.xz linux-dev-ca0a6a6473f69f1773c97755840587262d841883.zip | |
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: Steve Sakoman <steve@sakoman.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Diffstat (limited to 'arch/arm/mach-omap2')
| -rw-r--r-- | arch/arm/mach-omap2/board-overo.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/board-overo.c b/arch/arm/mach-omap2/board-overo.c index d621ee8fec0c..4278ecb799a2 100644 --- a/arch/arm/mach-omap2/board-overo.c +++ b/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, }; +/* 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 |