From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756850AbcJWWB5 (ORCPT ); Sun, 23 Oct 2016 18:01:57 -0400 Received: from 5.mo3.mail-out.ovh.net ([87.98.178.36]:49457 "EHLO 5.mo3.mail-out.ovh.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753678AbcJWWBx (ORCPT ); Sun, 23 Oct 2016 18:01:53 -0400 From: Lukasz Majewski To: Thierry Reding , Stefan Agner , Boris Brezillon Cc: linux-pwm@vger.kernel.org, linux-kernel@vger.kernel.org, Fabio Estevam , Fabio Estevam , Lothar Wassmann , Bhuvanchandra DV , kernel@pengutronix.de, Lukasz Majewski Subject: [PATCH 0/6] pwm: imx: Provide atomic operation for IMX PWM driver Date: Sun, 23 Oct 2016 23:45:40 +0200 Message-Id: <1477259146-19167-1-git-send-email-l.majewski@majess.pl> X-Mailer: git-send-email 2.1.4 X-Ovh-Tracer-Id: 3432868817911333509 X-VR-SPAMSTATE: OK X-VR-SPAMSCORE: -100 X-VR-SPAMCAUSE: gggruggvucftvghtrhhoucdtuddrfeelvddrieeggddtjecutefuodetggdotefrodftvfcurfhrohhfihhlvgemucfqggfjpdevjffgvefmvefgnecuuegrihhlohhuthemuceftddtnecusecvtfgvtghiphhivghnthhsucdlqddutddtmd Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patch set brings atomic operation to i.MX's PWMv2 driver. This work has been supported and suggested by Boris Brezillon [1] and Stefan Agner, by showing how simple the transition could be :-). It has been divided into several steps: - Separate PWMv1 commits from "generic" and non atomic PWM code. NOTE: Since I do not have board with PWMv1, I would like to ask somebody for testing - Move some imx_config_v2 code to separate functions - Provide PWM atomic implementation (the ->apply() driver) in a single patch for better readability. - Remove redundant PWM code (disable, enable, config callbacks) - Clean up the driver infrastructure - Provide "polarity_supported" flag to indicate support for polarity inversion This work should be applied on top of following commits: http://patchwork.ozlabs.org/patch/679706/ http://patchwork.ozlabs.org/patch/679707/ http://patchwork.ozlabs.org/patch/679680/ Test HW: -------- This patch set has been tested on i.MX6q board with vanilla 4.7 kernel. It applies clearly on 4.9-rcX SHA1: 0c2b6dc4fd4fa13796b319aae969a009f03222c6 The PWM operation has been tested with pwm_bl backlight driver by changing its brightness. [1]: http://patchwork.ozlabs.org/patch/685402/ Lukasz Majewski (6): pwm: imx: Rewrite imx_pwm_*_v1 code to facilitate switch to atomic pwm operation pwm: imx: Move PWMv2 software reset code to a separate function pwm: imx: Move PWMv2 wait for fifo slot code to a separate function pwm: imx: Provide atomic PWM support for IMXv2 PWM pwm: imx: Remove redundant IMX PWMv2 code pwm: imx: Introduce "polarity_supported" flag to PWMv2 driver drivers/pwm/pwm-imx.c | 262 ++++++++++++++++++++++---------------------------- 1 file changed, 114 insertions(+), 148 deletions(-) -- 2.1.4