From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jarkko Nikula Subject: [PATCH 3/3] spi: pxa2xx: Make LPSS SPI general register optional Date: Wed, 3 Jun 2015 13:49:47 +0300 Message-ID: <1433328587-20797-3-git-send-email-jarkko.nikula@linux.intel.com> References: <1433328587-20797-1-git-send-email-jarkko.nikula@linux.intel.com> Cc: Mark Brown , Jarkko Nikula To: linux-spi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org Return-path: In-Reply-To: <1433328587-20797-1-git-send-email-jarkko.nikula-VuQAYsv1563Yd54FQh9/CA@public.gmane.org> Sender: linux-spi-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-ID: General register located in LPSS SPI private register space is not found in upcoming Intel LPSS platforms. Access it conditionally depending is it defined in configuration. Signed-off-by: Jarkko Nikula --- drivers/spi/spi-pxa2xx.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) diff --git a/drivers/spi/spi-pxa2xx.c b/drivers/spi/spi-pxa2xx.c index 174b88e44987..28d22206d6c8 100644 --- a/drivers/spi/spi-pxa2xx.c +++ b/drivers/spi/spi-pxa2xx.c @@ -240,9 +240,13 @@ static void lpss_ssp_setup(struct driver_data *drv_data) if (drv_data->master_info->enable_dma) { __lpss_ssp_write_priv(drv_data, config->reg_ssp, 1); - value = __lpss_ssp_read_priv(drv_data, config->reg_general); - value |= GENERAL_REG_RXTO_HOLDOFF_DISABLE; - __lpss_ssp_write_priv(drv_data, config->reg_general, value); + if (config->reg_general >= 0) { + value = __lpss_ssp_read_priv(drv_data, + config->reg_general); + value |= GENERAL_REG_RXTO_HOLDOFF_DISABLE; + __lpss_ssp_write_priv(drv_data, + config->reg_general, value); + } } } -- 2.1.4 -- To unsubscribe from this list: send the line "unsubscribe linux-spi" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html