From: Sascha Hauer <s.hauer-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org>
To: linux-spi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Cc: linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
Mark Brown <broonie-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
Anton Bondarenko
<anton.bondarenko.sama-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
Sascha Hauer <s.hauer-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org>
Subject: [PATCH 05/12] spi: imx: initialize usedma earlier
Date: Fri, 19 Feb 2016 08:43:05 +0100 [thread overview]
Message-ID: <1455867792-26389-6-git-send-email-s.hauer@pengutronix.de> (raw)
In-Reply-To: <1455867792-26389-1-git-send-email-s.hauer-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org>
So that the SoC specific config function can know if we will do
DMA or not. Will be needed in following patches.
Signed-off-by: Sascha Hauer <s.hauer-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org>
---
drivers/spi/spi-imx.c | 15 ++++++++-------
1 file changed, 8 insertions(+), 7 deletions(-)
diff --git a/drivers/spi/spi-imx.c b/drivers/spi/spi-imx.c
index 5a48d07..7047453 100644
--- a/drivers/spi/spi-imx.c
+++ b/drivers/spi/spi-imx.c
@@ -815,6 +815,11 @@ static int spi_imx_setupxfer(struct spi_device *spi,
spi_imx->tx = spi_imx_buf_tx_u32;
}
+ if (spi_imx_can_dma(spi_imx->bitbang.master, spi, t))
+ spi_imx->usedma = 1;
+ else
+ spi_imx->usedma = 0;
+
spi_imx->devtype_data->config(spi_imx, &config);
return 0;
@@ -1038,14 +1043,10 @@ static int spi_imx_transfer(struct spi_device *spi,
{
struct spi_imx_data *spi_imx = spi_master_get_devdata(spi->master);
- if (spi_imx->bitbang.master->can_dma &&
- spi_imx_can_dma(spi_imx->bitbang.master, spi, transfer)) {
- spi_imx->usedma = true;
+ if (spi_imx->usedma)
return spi_imx_dma_transfer(spi_imx, transfer);
- }
- spi_imx->usedma = false;
-
- return spi_imx_pio_transfer(spi, transfer);
+ else
+ return spi_imx_pio_transfer(spi, transfer);
}
static int spi_imx_setup(struct spi_device *spi)
--
2.7.0
--
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next prev parent reply other threads:[~2016-02-19 7:43 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-02-19 7:43 [PATCH v2] i.MX SPI DMA cleanup Sascha Hauer
[not found] ` <1455867792-26389-1-git-send-email-s.hauer-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org>
2016-02-19 7:43 ` [PATCH 01/12] spi: imx: allow only WML aligned transfers to use DMA Sascha Hauer
2016-02-19 7:43 ` [PATCH 02/12] spi: imx: use proper dev_* functions for driver messages Sascha Hauer
2016-02-19 7:43 ` [PATCH 03/12] spi: imx: replace fixed timeout with calculated Sascha Hauer
2016-02-19 7:43 ` [PATCH 04/12] spi: imx: drop fallback to PIO Sascha Hauer
[not found] ` <1455867792-26389-5-git-send-email-s.hauer-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org>
2016-02-19 15:51 ` Mark Brown
2016-02-19 7:43 ` Sascha Hauer [this message]
[not found] ` <1455867792-26389-6-git-send-email-s.hauer-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org>
2016-02-19 8:08 ` [PATCH 05/12] spi: imx: initialize usedma earlier Lothar Waßmann
2016-02-19 7:43 ` [PATCH 06/12] spi: imx: drop unnecessary read/modify/write Sascha Hauer
2016-02-19 7:43 ` [PATCH 07/12] spi: imx: drop unncessary dma_is_inited variable Sascha Hauer
2016-02-19 7:43 ` [PATCH 08/12] spi: imx: add support for all SPI word width for DMA Sascha Hauer
2016-02-19 7:43 ` [PATCH 09/12] spi: imx: remove unnecessary bit clearing in mx51_ecspi_config Sascha Hauer
2016-02-19 7:43 ` [PATCH 10/12] spi: imx: make some register defines simpler Sascha Hauer
2016-02-19 7:43 ` [PATCH 11/12] spi: imx: set MX51_ECSPI_CTRL_SMC bit in setup function Sascha Hauer
2016-02-19 7:43 ` [PATCH 12/12] spi: imx: drop bogus tests for rx/tx bufs in DMA transfer Sascha Hauer
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