From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754366AbbANWXG (ORCPT ); Wed, 14 Jan 2015 17:23:06 -0500 Received: from mail-gw2-out.broadcom.com ([216.31.210.63]:36339 "EHLO mail-gw2-out.broadcom.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752087AbbANWXE (ORCPT ); Wed, 14 Jan 2015 17:23:04 -0500 X-IronPort-AV: E=Sophos;i="5.09,758,1418112000"; d="scan'208";a="54830071" From: Ray Jui To: Wolfram Sang , =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= , Rob Herring , "Pawel Moll" , Mark Rutland , Ian Campbell , Kumar Gala , "Grant Likely" , Christian Daudt , Matt Porter , Florian Fainelli , Russell King CC: Scott Branden , , , , , , "Ray Jui" Subject: [PATCH v4 0/3] Add I2C support to Broadcom iProc Date: Wed, 14 Jan 2015 14:23:30 -0800 Message-ID: <1421274213-3544-1-git-send-email-rjui@broadcom.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: References: MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patchset contains the initial I2C support for Broadcom iProc family of SoCs. The iProc I2C controller has separate internal TX and RX FIFOs, each has a size of 64 bytes. The iProc I2C controller supports two bus speeds including standard mode (100 kHz) and fast mode (400 kHz) Changes from v3: - Add config dependency to COMPILE_TEST to allow the driver to be build tested by other platforms - Improve CPU utilization efficiency in the loop of waiting for bus to idle - Add more comment in the driver to clarify the way how the "start busy" interrupt is triggered from the I2C controller - Fix inconsistent coding style and format - Improve the bus speed validation logic in the driver - Add code to free the interrupt line in driver's remove function. Also change to use non-devm API to request the interrupt line - Other miscellaneous improvements and fixes Changes from v2: - Have the I2C driver default to y so it does not need to be selected from ARCH_BCM_IPROC. This also helps to get rid of one patch. The driver still depends on ARCH_BCM_IPROC - Get rid of redundant check on resource returned by platform_get_resource Changes from v1: - Fix function argument parenthesis - Get rid of redundant driver owner field Ray Jui (3): i2c: iProc: define Broadcom iProc I2C binding i2c: iproc: Add Broadcom iProc I2C Driver ARM: dts: add I2C device nodes for Broadcom Cygnus .../devicetree/bindings/i2c/brcm,iproc-i2c.txt | 37 ++ arch/arm/boot/dts/bcm-cygnus.dtsi | 20 + drivers/i2c/busses/Kconfig | 10 + drivers/i2c/busses/Makefile | 1 + drivers/i2c/busses/i2c-bcm-iproc.c | 503 ++++++++++++++++++++ 5 files changed, 571 insertions(+) create mode 100644 Documentation/devicetree/bindings/i2c/brcm,iproc-i2c.txt create mode 100644 drivers/i2c/busses/i2c-bcm-iproc.c -- 1.7.9.5