From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753755AbeDQNjr (ORCPT ); Tue, 17 Apr 2018 09:39:47 -0400 Received: from mx07-00178001.pphosted.com ([62.209.51.94]:64910 "EHLO mx07-00178001.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753219AbeDQNjk (ORCPT ); Tue, 17 Apr 2018 09:39:40 -0400 From: Fabrice Gasnier To: , CC: , , , , , , , , , , , , Subject: [PATCH v5 0/6] Add support for PWM input capture on STM32 Date: Tue, 17 Apr 2018 15:38:27 +0200 Message-ID: <1523972313-28765-1-git-send-email-fabrice.gasnier@st.com> X-Mailer: git-send-email 1.9.1 MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.75.127.116] X-ClientProxiedBy: GPXDAG5NODE6.st.com (10.75.127.79) To GPXDAG5NODE6.st.com (10.75.127.79) X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2018-04-17_07:,, signatures=0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This series adds support for capture to stm32-pwm driver. Capture is based on DMAs. - First two patches add support for requesting DMAs to MFD core - Next three patches add support for capture to stm32-pwm driver - This has been tested on stm32429i-eval board. --- Changes in v5: - update patch 2 (mfd: stm32-timers: add support for dmas) move stm32_timers_dma struct to header file, fix warning on dma_mapping_error(). Changes in v4: - Lee's comments on patch 2 (mfd: stm32-timers: add support for dmas) Add kerneldoc header, better format comments. Changes in v3: - Dropped 2 precusor patches applied by Thierry in pwm tree: "pwm: stm32: fix, remove unused struct device" "pwm: stm32: protect common prescaler for all channels" - Note: this series applies on top on pwm tree - Implements Lee's comments on MFD part: rework stm32_timers_dma struct, exported routine prototype now use generic device struct, more various comments (see patch 2 changelog). Resend v2: - Add collected Acks Changes in v2: - Abstract DMA handling from child driver: move it to MFD core - Rework pwm capture routines to adopt this change - Comment on optional dma support, beautify DMAs probe Fabrice Gasnier (6): dt-bindings: mfd: stm32-timers: add support for dmas mfd: stm32-timers: add support for dmas pwm: stm32: add capture support pwm: stm32: improve capture by tuning counter prescaler pwm: stm32: use input prescaler to improve period capture ARM: dts: stm32: Enable pwm3 input capture on stm32f429i-eval .../devicetree/bindings/mfd/stm32-timers.txt | 20 ++ arch/arm/boot/dts/stm32429i-eval.dts | 3 + drivers/mfd/stm32-timers.c | 201 +++++++++++++++- drivers/pwm/pwm-stm32.c | 257 +++++++++++++++++++++ include/linux/mfd/stm32-timers.h | 58 +++++ 5 files changed, 537 insertions(+), 2 deletions(-) -- 1.9.1