Re: [PATCH 0/3] Add ktd2692 Flash LED driver
Hi Bryan, On Mon, Mar 02, 2015 at 12:07:42PM -0800, Bryan Wu wrote: On Mon, Mar 2, 2015 at 1:15 AM, Sakari Ailus sakari.ai...@iki.fi wrote: H Ingi, On Mon, Mar 02, 2015 at 04:14:39PM +0900, Ingi Kim wrote: Hi Jacek On 2015년 02월 27일 17:42, Jacek Anaszewski wrote: Hi Ingi, On 02/27/2015 02:01 AM, Ingi Kim wrote: This patch supports KTD2692 flash LED driver Ingi Kim (3): of: Add vendor prefix for Kinetic technologies leds: ktd2692: add device tree bindings for ktd2692 leds: Add ktd2692 flash LED driver .../devicetree/bindings/leds/leds-ktd2692.txt | 19 ++ .../devicetree/bindings/vendor-prefixes.txt|1 + drivers/leds/Kconfig |8 + drivers/leds/Makefile |1 + drivers/leds/leds-ktd2692.c| 245 5 files changed, 274 insertions(+) create mode 100644 Documentation/devicetree/bindings/leds/leds-ktd2692.txt create mode 100644 drivers/leds/leds-ktd2692.c In your device tree binding documentation there is torch-gpio mentioned, but you seem not to use it in the driver. We have already LED Flash class (/drivers/leds/led-class-flash.c) for this type of devices, which handles both torch and flash modes (flash_strobe sysfs attribute is provided for strobing the flash). The reference drivers using LED Flash class are still pending [1], but I think that at least leds-aat1290 driver is almost ready for merging. It controls very similar device to yours. Another advantage of using LED Flash class is that it has been designed to be compatible with Video for Linux 2 subsystem, which will allow for registering LED Flash class devices as a V4L2 sub-devices. Adding Sakari. Ok, I'll check LED Flash class, and add torch-gpio Many LED flash chips include a hardware pin for torch control but few really need it. If you don't, i.e. you can implement the torch using the control bus instead, I think I'd probably drop it from the chip's DT bindings. Ingi, please follow Jacek's advice to use LED Flash class interface. I'm reviewing those leds flash drivers and probably merge them soon. Jacek and Sakari thanks for the review. Sakari, so what's the control bus your mentioned here? I wasn't cc'd in the original patch so I didn't know whether it was I2C or not. Doesn't appear to be. -- Regards, Sakari Ailus e-mail: sakari.ai...@iki.fi XMPP: sai...@retiisi.org.uk -- To unsubscribe from this list: send the line unsubscribe devicetree in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: [PATCH 0/3] Add ktd2692 Flash LED driver
Hi On 2015년 03월 03일 07:03, Sakari Ailus wrote: Hi Bryan, On Mon, Mar 02, 2015 at 12:07:42PM -0800, Bryan Wu wrote: On Mon, Mar 2, 2015 at 1:15 AM, Sakari Ailus sakari.ai...@iki.fi wrote: H Ingi, On Mon, Mar 02, 2015 at 04:14:39PM +0900, Ingi Kim wrote: Hi Jacek On 2015년 02월 27일 17:42, Jacek Anaszewski wrote: Hi Ingi, On 02/27/2015 02:01 AM, Ingi Kim wrote: This patch supports KTD2692 flash LED driver Ingi Kim (3): of: Add vendor prefix for Kinetic technologies leds: ktd2692: add device tree bindings for ktd2692 leds: Add ktd2692 flash LED driver .../devicetree/bindings/leds/leds-ktd2692.txt | 19 ++ .../devicetree/bindings/vendor-prefixes.txt|1 + drivers/leds/Kconfig |8 + drivers/leds/Makefile |1 + drivers/leds/leds-ktd2692.c| 245 5 files changed, 274 insertions(+) create mode 100644 Documentation/devicetree/bindings/leds/leds-ktd2692.txt create mode 100644 drivers/leds/leds-ktd2692.c In your device tree binding documentation there is torch-gpio mentioned, but you seem not to use it in the driver. We have already LED Flash class (/drivers/leds/led-class-flash.c) for this type of devices, which handles both torch and flash modes (flash_strobe sysfs attribute is provided for strobing the flash). The reference drivers using LED Flash class are still pending [1], but I think that at least leds-aat1290 driver is almost ready for merging. It controls very similar device to yours. Another advantage of using LED Flash class is that it has been designed to be compatible with Video for Linux 2 subsystem, which will allow for registering LED Flash class devices as a V4L2 sub-devices. Adding Sakari. Ok, I'll check LED Flash class, and add torch-gpio Many LED flash chips include a hardware pin for torch control but few really need it. If you don't, i.e. you can implement the torch using the control bus instead, I think I'd probably drop it from the chip's DT bindings. Ingi, please follow Jacek's advice to use LED Flash class interface. I'm reviewing those leds flash drivers and probably merge them soon. Jacek and Sakari thanks for the review. Sakari, so what's the control bus your mentioned here? I wasn't cc'd in the original patch so I didn't know whether it was I2C or not. Doesn't appear to be. Thanks for the review and I'll work to use LED Flash class interface and try adding torch-gpio(flash mode enable) line (I'll rename those gpio lines) Sakari, ktd2692 flash led device is controlled through Expresswire single-wire interface by using the strobe-gpio(control) pin. Adding pin information of the KTD2692. CTRL pin can control LED on/off and Movie/Flash mode current, Flash timeout, LVP(low voltage protection). AUX pin(torch-gpio) allows highest priority ON/OFF flash mode control. -- To unsubscribe from this list: send the line unsubscribe devicetree in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: [PATCH 0/3] Add ktd2692 Flash LED driver
On 03/02/2015 09:07 PM, Bryan Wu wrote: On Mon, Mar 2, 2015 at 1:15 AM, Sakari Ailus sakari.ai...@iki.fi wrote: H Ingi, On Mon, Mar 02, 2015 at 04:14:39PM +0900, Ingi Kim wrote: Hi Jacek On 2015년 02월 27일 17:42, Jacek Anaszewski wrote: Hi Ingi, On 02/27/2015 02:01 AM, Ingi Kim wrote: This patch supports KTD2692 flash LED driver Ingi Kim (3): of: Add vendor prefix for Kinetic technologies leds: ktd2692: add device tree bindings for ktd2692 leds: Add ktd2692 flash LED driver .../devicetree/bindings/leds/leds-ktd2692.txt | 19 ++ .../devicetree/bindings/vendor-prefixes.txt|1 + drivers/leds/Kconfig |8 + drivers/leds/Makefile |1 + drivers/leds/leds-ktd2692.c| 245 5 files changed, 274 insertions(+) create mode 100644 Documentation/devicetree/bindings/leds/leds-ktd2692.txt create mode 100644 drivers/leds/leds-ktd2692.c In your device tree binding documentation there is torch-gpio mentioned, but you seem not to use it in the driver. We have already LED Flash class (/drivers/leds/led-class-flash.c) for this type of devices, which handles both torch and flash modes (flash_strobe sysfs attribute is provided for strobing the flash). The reference drivers using LED Flash class are still pending [1], but I think that at least leds-aat1290 driver is almost ready for merging. It controls very similar device to yours. Another advantage of using LED Flash class is that it has been designed to be compatible with Video for Linux 2 subsystem, which will allow for registering LED Flash class devices as a V4L2 sub-devices. Adding Sakari. Ok, I'll check LED Flash class, and add torch-gpio Many LED flash chips include a hardware pin for torch control but few really need it. If you don't, i.e. you can implement the torch using the control bus instead, I think I'd probably drop it from the chip's DT bindings. Ingi, please follow Jacek's advice to use LED Flash class interface. I'm reviewing those leds flash drivers and probably merge them soon. Bryan please hold on with merging them as I am about to send new patch set, as we've agreed that synchronized strobe feature should be removed from the LED Flash class. There will be also some tweaking around aat1290 DT bindings. -- Best Regards, Jacek Anaszewski -- To unsubscribe from this list: send the line unsubscribe devicetree in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: [PATCH 0/3] Add ktd2692 Flash LED driver
H Ingi, On Mon, Mar 02, 2015 at 04:14:39PM +0900, Ingi Kim wrote: Hi Jacek On 2015년 02월 27일 17:42, Jacek Anaszewski wrote: Hi Ingi, On 02/27/2015 02:01 AM, Ingi Kim wrote: This patch supports KTD2692 flash LED driver Ingi Kim (3): of: Add vendor prefix for Kinetic technologies leds: ktd2692: add device tree bindings for ktd2692 leds: Add ktd2692 flash LED driver .../devicetree/bindings/leds/leds-ktd2692.txt | 19 ++ .../devicetree/bindings/vendor-prefixes.txt|1 + drivers/leds/Kconfig |8 + drivers/leds/Makefile |1 + drivers/leds/leds-ktd2692.c| 245 5 files changed, 274 insertions(+) create mode 100644 Documentation/devicetree/bindings/leds/leds-ktd2692.txt create mode 100644 drivers/leds/leds-ktd2692.c In your device tree binding documentation there is torch-gpio mentioned, but you seem not to use it in the driver. We have already LED Flash class (/drivers/leds/led-class-flash.c) for this type of devices, which handles both torch and flash modes (flash_strobe sysfs attribute is provided for strobing the flash). The reference drivers using LED Flash class are still pending [1], but I think that at least leds-aat1290 driver is almost ready for merging. It controls very similar device to yours. Another advantage of using LED Flash class is that it has been designed to be compatible with Video for Linux 2 subsystem, which will allow for registering LED Flash class devices as a V4L2 sub-devices. Adding Sakari. Ok, I'll check LED Flash class, and add torch-gpio Many LED flash chips include a hardware pin for torch control but few really need it. If you don't, i.e. you can implement the torch using the control bus instead, I think I'd probably drop it from the chip's DT bindings. I wonder what others think. -- Kind regards, Sakari Ailus e-mail: sakari.ai...@iki.fi XMPP: sai...@retiisi.org.uk -- To unsubscribe from this list: send the line unsubscribe devicetree in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: [PATCH 0/3] Add ktd2692 Flash LED driver
On Mon, Mar 2, 2015 at 1:15 AM, Sakari Ailus sakari.ai...@iki.fi wrote: H Ingi, On Mon, Mar 02, 2015 at 04:14:39PM +0900, Ingi Kim wrote: Hi Jacek On 2015년 02월 27일 17:42, Jacek Anaszewski wrote: Hi Ingi, On 02/27/2015 02:01 AM, Ingi Kim wrote: This patch supports KTD2692 flash LED driver Ingi Kim (3): of: Add vendor prefix for Kinetic technologies leds: ktd2692: add device tree bindings for ktd2692 leds: Add ktd2692 flash LED driver .../devicetree/bindings/leds/leds-ktd2692.txt | 19 ++ .../devicetree/bindings/vendor-prefixes.txt|1 + drivers/leds/Kconfig |8 + drivers/leds/Makefile |1 + drivers/leds/leds-ktd2692.c| 245 5 files changed, 274 insertions(+) create mode 100644 Documentation/devicetree/bindings/leds/leds-ktd2692.txt create mode 100644 drivers/leds/leds-ktd2692.c In your device tree binding documentation there is torch-gpio mentioned, but you seem not to use it in the driver. We have already LED Flash class (/drivers/leds/led-class-flash.c) for this type of devices, which handles both torch and flash modes (flash_strobe sysfs attribute is provided for strobing the flash). The reference drivers using LED Flash class are still pending [1], but I think that at least leds-aat1290 driver is almost ready for merging. It controls very similar device to yours. Another advantage of using LED Flash class is that it has been designed to be compatible with Video for Linux 2 subsystem, which will allow for registering LED Flash class devices as a V4L2 sub-devices. Adding Sakari. Ok, I'll check LED Flash class, and add torch-gpio Many LED flash chips include a hardware pin for torch control but few really need it. If you don't, i.e. you can implement the torch using the control bus instead, I think I'd probably drop it from the chip's DT bindings. Ingi, please follow Jacek's advice to use LED Flash class interface. I'm reviewing those leds flash drivers and probably merge them soon. Jacek and Sakari thanks for the review. Sakari, so what's the control bus your mentioned here? Thanks, -Bryan -- To unsubscribe from this list: send the line unsubscribe devicetree in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: [PATCH 0/3] Add ktd2692 Flash LED driver
Hi Jacek On 2015년 02월 27일 17:42, Jacek Anaszewski wrote: Hi Ingi, On 02/27/2015 02:01 AM, Ingi Kim wrote: This patch supports KTD2692 flash LED driver Ingi Kim (3): of: Add vendor prefix for Kinetic technologies leds: ktd2692: add device tree bindings for ktd2692 leds: Add ktd2692 flash LED driver .../devicetree/bindings/leds/leds-ktd2692.txt | 19 ++ .../devicetree/bindings/vendor-prefixes.txt|1 + drivers/leds/Kconfig |8 + drivers/leds/Makefile |1 + drivers/leds/leds-ktd2692.c| 245 5 files changed, 274 insertions(+) create mode 100644 Documentation/devicetree/bindings/leds/leds-ktd2692.txt create mode 100644 drivers/leds/leds-ktd2692.c In your device tree binding documentation there is torch-gpio mentioned, but you seem not to use it in the driver. We have already LED Flash class (/drivers/leds/led-class-flash.c) for this type of devices, which handles both torch and flash modes (flash_strobe sysfs attribute is provided for strobing the flash). The reference drivers using LED Flash class are still pending [1], but I think that at least leds-aat1290 driver is almost ready for merging. It controls very similar device to yours. Another advantage of using LED Flash class is that it has been designed to be compatible with Video for Linux 2 subsystem, which will allow for registering LED Flash class devices as a V4L2 sub-devices. Adding Sakari. Ok, I'll check LED Flash class, and add torch-gpio Thanks, Adding Seung-woo Kim and Inha Song -- To unsubscribe from this list: send the line unsubscribe devicetree in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: [PATCH 0/3] Add ktd2692 Flash LED driver
Hi Ingi, On 02/27/2015 02:01 AM, Ingi Kim wrote: This patch supports KTD2692 flash LED driver Ingi Kim (3): of: Add vendor prefix for Kinetic technologies leds: ktd2692: add device tree bindings for ktd2692 leds: Add ktd2692 flash LED driver .../devicetree/bindings/leds/leds-ktd2692.txt | 19 ++ .../devicetree/bindings/vendor-prefixes.txt|1 + drivers/leds/Kconfig |8 + drivers/leds/Makefile |1 + drivers/leds/leds-ktd2692.c| 245 5 files changed, 274 insertions(+) create mode 100644 Documentation/devicetree/bindings/leds/leds-ktd2692.txt create mode 100644 drivers/leds/leds-ktd2692.c In your device tree binding documentation there is torch-gpio mentioned, but you seem not to use it in the driver. We have already LED Flash class (/drivers/leds/led-class-flash.c) for this type of devices, which handles both torch and flash modes (flash_strobe sysfs attribute is provided for strobing the flash). The reference drivers using LED Flash class are still pending [1], but I think that at least leds-aat1290 driver is almost ready for merging. It controls very similar device to yours. Another advantage of using LED Flash class is that it has been designed to be compatible with Video for Linux 2 subsystem, which will allow for registering LED Flash class devices as a V4L2 sub-devices. Adding Sakari. -- Best Regards, Jacek Anaszewski [1] http://www.spinics.net/lists/linux-media/msg86632.html -- To unsubscribe from this list: send the line unsubscribe devicetree in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
[PATCH 0/3] Add ktd2692 Flash LED driver
This patch supports KTD2692 flash LED driver Ingi Kim (3): of: Add vendor prefix for Kinetic technologies leds: ktd2692: add device tree bindings for ktd2692 leds: Add ktd2692 flash LED driver .../devicetree/bindings/leds/leds-ktd2692.txt | 19 ++ .../devicetree/bindings/vendor-prefixes.txt|1 + drivers/leds/Kconfig |8 + drivers/leds/Makefile |1 + drivers/leds/leds-ktd2692.c| 245 5 files changed, 274 insertions(+) create mode 100644 Documentation/devicetree/bindings/leds/leds-ktd2692.txt create mode 100644 drivers/leds/leds-ktd2692.c -- 1.7.9.5 -- To unsubscribe from this list: send the line unsubscribe devicetree in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
