| From: |
| Haavard Skinnemoen <hskinnemoen@atmel.com> |
| To: |
| Andrew Morton <akpm@linux-foundation.org> |
| Subject: |
| [PATCH -mm 0/2] AVR32 PWM driver and example user |
| Date: |
| Thu, 24 Jan 2008 15:33:43 +0100 |
| Message-ID: |
| <1201185225-15789-1-git-send-email-hskinnemoen@atmel.com> |
| Cc: |
| David Brownell <david-b@pacbell.net>,
Andrew Victor <linux@maxim.org.za>,
Nicolas Ferre <nicolas.ferre@atmel.com>,
Patrice Vilchez <patrice.vilchez@rfo.atmel.com>,
Richard Purdie <rpurdie@rpsys.net>,
linux-kernel@vger.kernel.org, kernel@avr32linux.org |
| Archive‑link: | |
Article |
Two patches from David Brownell follow. The first one implements a
low-level driver/library for the PWM controller integrated on some
newer AVR32- and ARM-based chips from Atmel. The second one uses this
library to implement a LED driver with variable brightness.
There's currently no user of this LED driver, but it can be tested on
the ATSTK1000 by following the instructions here:
http://avr32linux.org/twiki/bin/view/Main/AtmelPwmDriver
Also, PWM functionality in the kernel has been requested by several
AVR32 users with custom boards (which we hopefully will see support
for in mainline later), and some AT91-based boards may be able to use
the PWM LED driver by default given some suitable platform- and board
code (David mentioned AT91SAM9263EK.) I'd appreciate some feedback
from AT91 people about this.
David Brownell (2):
Basic PWM driver for AVR32 and AT91
PWM LED driver
arch/avr32/mach-at32ap/at32ap700x.c | 54 +++++
drivers/leds/Kconfig | 7 +
drivers/leds/Makefile | 1 +
drivers/leds/leds-atmel-pwm.c | 157 +++++++++++++
drivers/misc/Kconfig | 9 +
drivers/misc/Makefile | 1 +
drivers/misc/atmel_pwm.c | 409 +++++++++++++++++++++++++++++++++
include/asm-avr32/arch-at32ap/board.h | 3 +
include/linux/atmel_pwm.h | 70 ++++++
9 files changed, 711 insertions(+), 0 deletions(-)
create mode 100644 drivers/leds/leds-atmel-pwm.c
create mode 100644 drivers/misc/atmel_pwm.c
create mode 100644 include/linux/atmel_pwm.h
