Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751935AbaBMQWl (ORCPT ); Thu, 13 Feb 2014 11:22:41 -0500 Received: from ns.mm-sol.com ([37.157.136.199]:44709 "EHLO extserv.mm-sol.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751775AbaBMQWj (ORCPT ); Thu, 13 Feb 2014 11:22:39 -0500 From: "Ivan T. Ivanov" To: Mark Brown , Grant Likely , Rob Herring Cc: "Ivan T. Ivanov" , linux-spi@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org Subject: [PATH v2 0/2] spi: Add Qualcomm QUP SPI controller support Date: Thu, 13 Feb 2014 18:21:12 +0200 Message-Id: <1392308472-30136-1-git-send-email-iivanov@mm-sol.com> X-Mailer: git-send-email 1.7.9.5 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: "Ivan T. Ivanov" Hi, Following two patches are adding initial support for SPI controller available in Qualcomm SoC's. Controller initialization is based on spi_qsd driver available in CAF repository. Controller supports SPI_CPOL | SPI_CPHA | SPI_CS_HIGH | SPI_LOOP modes, up to 4 CS's and from 4 to 32 bits per word. SPI_LOOP mode is limited to input FIFO buffer size. Currently driver support only PIO mode, I am hopping to add also DMA mode support with dmaengine patches developed by Andy. Changes since first version: - Replace master::transfer_one_message with master::transfer_one and master::set_cs. - Use full controller version for compatible string "qcom,spi-qup-v2.1.1" and "qcom,spi-qup-v2.2.1". - Ensure that controller internal state is changed only if it is in valid state. - Ensure that resources shared between interrupt and thread context are properly protected. - Use controller auto clock gating for run time power management, instead full clock stop. This should have the same net result, right? - Simplify a bit read and write FIFO routines. - Several useless print messages removed. Ivan T. Ivanov (2): spi: qup: Add device tree bindings information spi: Add Qualcomm QUP SPI controller support .../devicetree/bindings/spi/qcom,spi-qup.txt | 85 ++ drivers/spi/Kconfig | 13 + drivers/spi/Makefile | 1 + drivers/spi/spi-qup.c | 837 ++++++++++++++++++++ 4 files changed, 936 insertions(+) create mode 100644 Documentation/devicetree/bindings/spi/qcom,spi-qup.txt create mode 100644 drivers/spi/spi-qup.c -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/