| Message ID | 1387532812-11742-1-git-send-email-thierry.reding@gmail.com |
|---|---|
| State | Accepted |
| Headers | show |
Hi guys, I think this kind of patch [1] should end up in your machine files too, as it impacts all machines not relying on devicetree. Moreover, your defconfig should be amended, adding CONFIG_REGULATOR_FIXED_VOLTAGE=y. So far these are the files I think should be checked : rj@beldin:~/mio_linux/kernel$ for f in $(grep -l pwm-backlight arch/arm/mach-*/*.c); do echo $f; done arch/arm/mach-pxa/cm-x300.c arch/arm/mach-pxa/colibri-pxa270-income.c arch/arm/mach-pxa/ezx.c arch/arm/mach-pxa/hx4700.c arch/arm/mach-pxa/lpd270.c arch/arm/mach-pxa/magician.c arch/arm/mach-pxa/mainstone.c arch/arm/mach-pxa/mioa701.c arch/arm/mach-pxa/palm27x.c arch/arm/mach-pxa/palmtc.c arch/arm/mach-pxa/palmte2.c arch/arm/mach-pxa/pcm990-baseboard.c arch/arm/mach-pxa/raumfeld.c arch/arm/mach-pxa/tavorevb.c arch/arm/mach-pxa/viper.c arch/arm/mach-pxa/z2.c arch/arm/mach-pxa/zylonite.c arch/arm/mach-s3c24xx/mach-h1940.c arch/arm/mach-s3c24xx/mach-rx1950.c arch/arm/mach-s3c64xx/mach-crag6410.c arch/arm/mach-s3c64xx/mach-hmt.c arch/arm/mach-s3c64xx/mach-smartq.c arch/arm/mach-shmobile/board-armadillo800eva.c Cheers. -- Robert [1] Thierry's patch Thierry Reding <thierry.reding@gmail.com> writes: > 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> > --- > arch/arm/mach-pxa/mioa701.c | 9 +++++++++ > 1 file changed, 9 insertions(+) > > diff --git a/arch/arm/mach-pxa/mioa701.c b/arch/arm/mach-pxa/mioa701.c > index f70583fee59f..29997bde277d 100644 > --- a/arch/arm/mach-pxa/mioa701.c > +++ b/arch/arm/mach-pxa/mioa701.c > @@ -38,6 +38,7 @@ > #include <linux/mtd/physmap.h> > #include <linux/usb/gpio_vbus.h> > #include <linux/reboot.h> > +#include <linux/regulator/fixed.h> > #include <linux/regulator/max1586.h> > #include <linux/slab.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" }, > }; > > +static struct regulator_consumer_supply fixed_5v0_consumers[] = { > + REGULATOR_SUPPLY("power", "pwm-backlight"), > +}; > + > static void __init mioa701_machine_init(void) > { > int rc; > @@ -753,6 +758,10 @@ static void __init mioa701_machine_init(void) > pxa_set_i2c_info(&i2c_pdata); > pxa27x_set_i2c_power_info(NULL); > 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) -- To unsubscribe from this list: send the line "unsubscribe linux-pwm" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Thierry Reding <thierry.reding@gmail.com> writes: > 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. Haojian, ping ? We're at -rc7 and I've seen no pull of this fix. As the display is broken without it, I'd really like to have it fixed for v3.13. Cheers. -- Robert -- To unsubscribe from this list: send the line "unsubscribe linux-pwm" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/arch/arm/mach-pxa/mioa701.c b/arch/arm/mach-pxa/mioa701.c index f70583fee59f..29997bde277d 100644 --- a/arch/arm/mach-pxa/mioa701.c +++ b/arch/arm/mach-pxa/mioa701.c @@ -38,6 +38,7 @@ #include <linux/mtd/physmap.h> #include <linux/usb/gpio_vbus.h> #include <linux/reboot.h> +#include <linux/regulator/fixed.h> #include <linux/regulator/max1586.h> #include <linux/slab.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" }, }; +static struct regulator_consumer_supply fixed_5v0_consumers[] = { + REGULATOR_SUPPLY("power", "pwm-backlight"), +}; + static void __init mioa701_machine_init(void) { int rc; @@ -753,6 +758,10 @@ static void __init mioa701_machine_init(void) pxa_set_i2c_info(&i2c_pdata); pxa27x_set_i2c_power_info(NULL); 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)