From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754529Ab3AVKZ5 (ORCPT ); Tue, 22 Jan 2013 05:25:57 -0500 Received: from mga11.intel.com ([192.55.52.93]:34881 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753737Ab3AVKZy (ORCPT ); Tue, 22 Jan 2013 05:25:54 -0500 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.84,513,1355126400"; d="scan'208";a="276908513" From: Mika Westerberg To: linux-kernel@vger.kernel.org Cc: Grant Likely , Eric Miao , Russell King , Haojian Zhuang , Mark Brown , Linus Walleij , "Rafael J. Wysocki" , chao.bi@intel.com, Andy Shevchenko , cxie4@marvell.com, ytang5@marvell.com, Mika Westerberg Subject: [PATCH v3 08/10] spi/pxa2xx: add support for SPI_LOOP Date: Tue, 22 Jan 2013 12:26:31 +0200 Message-Id: <1358850393-23111-9-git-send-email-mika.westerberg@linux.intel.com> X-Mailer: git-send-email 1.7.10.4 In-Reply-To: <1358850393-23111-1-git-send-email-mika.westerberg@linux.intel.com> References: <1358850393-23111-1-git-send-email-mika.westerberg@linux.intel.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This is useful when testing the functionality of the controller from userspace and there aren't any real SPI slave devices connected to the bus. Signed-off-by: Mika Westerberg --- drivers/spi/spi-pxa2xx.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/spi/spi-pxa2xx.c b/drivers/spi/spi-pxa2xx.c index 7f8f939..8a5ba0a 100644 --- a/drivers/spi/spi-pxa2xx.c +++ b/drivers/spi/spi-pxa2xx.c @@ -846,6 +846,9 @@ static int setup(struct spi_device *spi) chip->cr1 |= (((spi->mode & SPI_CPHA) != 0) ? SSCR1_SPH : 0) | (((spi->mode & SPI_CPOL) != 0) ? SSCR1_SPO : 0); + if (spi->mode & SPI_LOOP) + chip->cr1 |= SSCR1_LBM; + /* NOTE: PXA25x_SSP _could_ use external clocking ... */ if (!pxa25x_ssp_comp(drv_data)) dev_dbg(&spi->dev, "%ld Hz actual, %s\n", @@ -939,7 +942,7 @@ static int pxa2xx_spi_probe(struct platform_device *pdev) master->dev.parent = &pdev->dev; master->dev.of_node = pdev->dev.of_node; /* the spi->mode bits understood by this driver: */ - master->mode_bits = SPI_CPOL | SPI_CPHA | SPI_CS_HIGH; + master->mode_bits = SPI_CPOL | SPI_CPHA | SPI_CS_HIGH | SPI_LOOP; master->bus_num = ssp->port_id; master->num_chipselect = platform_info->num_chipselect; -- 1.7.10.4