On 09/01/2013 08:46, Thierry Reding wrote: > On Tue, Jan 08, 2013 at 04:36:42PM +0100, Boris BREZILLON wrote: >> Hi, >> >> This patch adds a PWM driver based on Atmel Timer Counter Block. >> Timer Counter Block is used in Waveform generator mode. >> >> A Timer Counter Block provides up to 6 PWM devices grouped by 2: >> * group 0 = PWM 0 and 1 >> * group 1 = PWM 2 and 3 >> * group 2 = PMW 4 and 5 >> >> PWM devices in a given group must be configured with the same >> period value. >> If a PWM device in a group tries to change the period value and >> the other device is already configured with a different value an >> error will be returned. >> >> This driver requires device tree support. >> The Timer Counter Block number used to create a PWM chip is >> given by tc-block field in an "atmel,tcb-pwm" compatible node. >> >> This patch was tested on kizbox board (at91sam9g20 SoC) with >> pwm-leds. >> >> Regards, >> >> Boris >> >> Signed-off-by: Boris BREZILLON <linux-...@overkiz.com> >> --- >> Changes since v1: >> - Fix device tree binding Documentation >> - Fix Kconfig issues (missing OF dependency, >> deprecated HAVE_PWM select, ...) >> - Fix various coding style issues. >> - Cleanup code and add some comments. >> >> Changes since v2: >> - Replace kzalloc/kfree with managed versions >> (devm_kzalloc/devm_kfree). >> - Add one cell to device tree binding to support polarity >> flag. >> - Replace min computation (2 div -> 1 mul + 1 div). >> >> Changes since v3: >> - Fix device tree binding Documentation >> - Fix Kconfig description >> - Fix coding style issues (function parameters alignment) >> - Replace 1000000000 value with NSEC_PER_SEC macro >> - Get rid of newcmr variable in enable/disable functions >> - Remove unneeded devm_kfree >> - Add missing atmel_tc_free >> >> Changes since v4: >> - Add missing comments >> - Fix coding style issues (multi-line error string) >> - Fix wrong MODULE_DEVICE_TABLE setting >> - Remove unneeded MODULE_ALIAS declaration >> >> .../devicetree/bindings/pwm/atmel-tcb-pwm.txt | 18 + >> drivers/pwm/Kconfig | 12 + >> drivers/pwm/Makefile | 1 + >> drivers/pwm/pwm-atmel-tcb.c | 445 >> ++++++++++++++++++++ >> 4 files changed, 476 insertions(+), 0 deletions(-) >> create mode 100644 Documentation/devicetree/bindings/pwm/atmel-tcb-pwm.txt >> create mode 100644 drivers/pwm/pwm-atmel-tcb.c > > Applied with minor changes to the commit message, thanks. > > Thierry >
Thanks -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
