From: Varadarajan Narayanan <varada@codeaurora.org>
To: broonie@kernel.org, robh+dt@kernel.org, mark.rutland@arm.com,
andy.gross@linaro.org, david.brown@linaro.org,
linux-spi@vger.kernel.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org,
linux-soc@vger.kernel.org
Cc: Varadarajan Narayanan <varada@codeaurora.org>,
Sham Muthayyan <smuthayy@codeaurora.org>
Subject: [PATCH 01/18] spi: qup: Enable chip select support
Date: Wed, 14 Jun 2017 11:22:14 +0530 [thread overview]
Message-ID: <1497419551-21834-2-git-send-email-varada@codeaurora.org> (raw)
In-Reply-To: <1497419551-21834-1-git-send-email-varada@codeaurora.org>
Enable chip select support for QUP versions later than v1
Signed-off-by: Sham Muthayyan <smuthayy@codeaurora.org>
Signed-off-by: Varadarajan Narayanan <varada@codeaurora.org>
---
drivers/spi/spi-qup.c | 21 +++++++++++++++++++++
1 file changed, 21 insertions(+)
diff --git a/drivers/spi/spi-qup.c b/drivers/spi/spi-qup.c
index 1bfa889..c0d4def 100644
--- a/drivers/spi/spi-qup.c
+++ b/drivers/spi/spi-qup.c
@@ -750,6 +750,24 @@ static int spi_qup_init_dma(struct spi_master *master, resource_size_t base)
return ret;
}
+static void spi_qup_set_cs(struct spi_device *spi, bool val)
+{
+ struct spi_qup *controller;
+ u32 spi_ioc;
+ u32 spi_ioc_orig;
+
+ controller = spi_master_get_devdata(spi->master);
+ spi_ioc = readl_relaxed(controller->base + SPI_IO_CONTROL);
+ spi_ioc_orig = spi_ioc;
+ if (!val)
+ spi_ioc |= SPI_IO_C_FORCE_CS;
+ else
+ spi_ioc &= ~SPI_IO_C_FORCE_CS;
+
+ if (spi_ioc != spi_ioc_orig)
+ writel_relaxed(spi_ioc, controller->base + SPI_IO_CONTROL);
+}
+
static int spi_qup_probe(struct platform_device *pdev)
{
struct spi_master *master;
@@ -846,6 +864,9 @@ static int spi_qup_probe(struct platform_device *pdev)
if (of_device_is_compatible(dev->of_node, "qcom,spi-qup-v1.1.1"))
controller->qup_v1 = 1;
+ if (!controller->qup_v1)
+ master->set_cs = spi_qup_set_cs;
+
spin_lock_init(&controller->lock);
init_completion(&controller->done);
--
QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation
next prev parent reply other threads:[~2017-06-14 5:52 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-06-14 5:52 [PATCH 00/18] spi: qup: Fixes and add support for >64k transfers Varadarajan Narayanan
2017-06-14 5:52 ` Varadarajan Narayanan [this message]
2017-06-14 9:47 ` [PATCH 01/18] spi: qup: Enable chip select support Stanimir Varbanov
2017-08-08 11:18 ` Applied "spi: qup: Enable chip select support" to the spi tree Mark Brown
[not found] ` <1497419551-21834-1-git-send-email-varada-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
2017-06-14 5:52 ` [PATCH 02/18] spi: qup: Setup DMA mode correctly Varadarajan Narayanan
2017-08-08 11:18 ` Applied "spi: qup: Setup DMA mode correctly" to the spi tree Mark Brown
2017-06-14 5:52 ` [PATCH 06/18] spi: qup: Fix error handling in spi_qup_prep_sg Varadarajan Narayanan
2017-06-14 5:52 ` [PATCH 03/18] spi: qup: Add completion timeout for dma mode Varadarajan Narayanan
2017-06-14 5:52 ` [PATCH 04/18] spi: qup: Add completion timeout for fifo/block mode Varadarajan Narayanan
2017-06-14 5:52 ` [PATCH 05/18] spi: qup: Place the QUP in run mode before DMA transactions Varadarajan Narayanan
2017-06-14 5:52 ` [PATCH 07/18] spi: qup: Fix transaction done signaling Varadarajan Narayanan
2017-06-14 7:13 ` Sricharan R
[not found] ` <4b81a4c7-b85c-a35d-15fb-4aaaec3c7e8c-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
2017-06-14 19:51 ` Andy Gross
[not found] ` <20170614195155.GB32733-5taXn+FmohyKb9UB7mSz9QC/G2K4zDHf@public.gmane.org>
2017-06-15 5:14 ` Sricharan R
2017-06-14 5:52 ` [PATCH 08/18] spi: qup: Handle v1 dma completion differently Varadarajan Narayanan
[not found] ` <1497419551-21834-9-git-send-email-varada-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
2017-06-14 7:15 ` Sricharan R
[not found] ` <a0e499a7-8f89-96d6-9463-c2b3f774cd6d-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
2017-06-14 19:53 ` Andy Gross
2017-06-14 5:52 ` [PATCH 09/18] spi: qup: Do block sized read/write in block mode Varadarajan Narayanan
2017-06-14 5:52 ` [PATCH 10/18] spi: qup: Fix DMA mode interrupt handling Varadarajan Narayanan
2017-06-14 7:21 ` Sricharan R
[not found] ` <66ba7dfb-6ff3-884e-6db0-8d5191f87c93-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
2017-06-14 20:06 ` Andy Gross
2017-06-15 5:52 ` Sricharan R
2017-06-14 5:52 ` [PATCH 11/18] spi: qup: properly detect extra interrupts Varadarajan Narayanan
[not found] ` <1497419551-21834-12-git-send-email-varada-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
2017-06-14 7:27 ` Sricharan R
2017-06-14 19:59 ` Andy Gross
[not found] ` <20170614195953.GD32733-5taXn+FmohyKb9UB7mSz9QC/G2K4zDHf@public.gmane.org>
2017-06-14 21:51 ` Matthew McClintock
2017-06-15 5:27 ` Sricharan R
2017-06-14 5:52 ` [PATCH 12/18] spi: qup: refactor spi_qup_io_config into two functions Varadarajan Narayanan
2017-06-14 5:52 ` [PATCH 13/18] spi: qup: call io_config in mode specific function Varadarajan Narayanan
2017-06-14 5:52 ` [PATCH 14/18] spi: qup: allow block mode to generate multiple transactions Varadarajan Narayanan
2017-06-14 5:52 ` [PATCH 15/18] spi: qup: refactor spi_qup_prep_sg Varadarajan Narayanan
2017-06-14 5:52 ` [PATCH 16/18] spi: qup: allow multiple DMA transactions per spi xfer Varadarajan Narayanan
2017-06-14 5:52 ` [PATCH 17/18] spi: qup: Ensure done detection Varadarajan Narayanan
2017-06-14 5:52 ` [PATCH 18/18] spi: qup: support for qup v1 dma Varadarajan Narayanan
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