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ARM: pxa: Add dummy backlight power supply on Mitac Mio A701

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Recent changes to the pwm-backlight driver have made the power supply
mandatory. There is code in the regulator core to deal with situations
where no regulator is specified and provide a dummy, but that works on
DT-based boards only.

The situation can be remedied by adding a dummy regulator during board
initialization.

Tested-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Signed-off-by: Haojian Zhuang <haojian.zhuang@gmail.com>
This commit is contained in:
Thierry Reding 2013-12-20 10:46:52 +01:00 • committed by Haojian Zhuang
parent 38dbfb59d1
commit 902e6a0c7e
1 changed files with 9 additions and 0 deletions
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9
arch/arm/mach-pxa/mioa701.c
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@ -38,6 +38,7 @@
#include <linux/mtd/physmap.h> #include <linux/mtd/physmap.h>
#include <linux/usb/gpio_vbus.h> #include <linux/usb/gpio_vbus.h>
#include <linux/reboot.h> #include <linux/reboot.h>
#include <linux/regulator/fixed.h>
#include <linux/regulator/max1586.h> #include <linux/regulator/max1586.h>
#include <linux/slab.h> #include <linux/slab.h>
#include <linux/i2c/pxa-i2c.h> #include <linux/i2c/pxa-i2c.h>
@ -714,6 +715,10 @@ static struct gpio global_gpios[] = {
{ GPIO56_MT9M111_nOE, GPIOF_OUT_INIT_LOW, "Camera nOE" }, { GPIO56_MT9M111_nOE, GPIOF_OUT_INIT_LOW, "Camera nOE" },
}; };
static struct regulator_consumer_supply fixed_5v0_consumers[] = {
REGULATOR_SUPPLY("power", "pwm-backlight"),
};
static void __init mioa701_machine_init(void) static void __init mioa701_machine_init(void)
{ {
int rc; int rc;
@ -753,6 +758,10 @@ static void __init mioa701_machine_init(void)
pxa_set_i2c_info(&i2c_pdata); pxa_set_i2c_info(&i2c_pdata);
pxa27x_set_i2c_power_info(NULL); pxa27x_set_i2c_power_info(NULL);
pxa_set_camera_info(&mioa701_pxacamera_platform_data); pxa_set_camera_info(&mioa701_pxacamera_platform_data);
regulator_register_always_on(0, "fixed-5.0V", fixed_5v0_consumers,
ARRAY_SIZE(fixed_5v0_consumers),
5000000);
} }
static void mioa701_machine_exit(void) static void mioa701_machine_exit(void)