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authorSerge Semin <Sergey.Semin@baikalelectronics.ru>2020-05-29 16:12:03 +0300
committerMark Brown <broonie@kernel.org>2020-05-29 15:55:53 +0100
commit0fdad596d46b28d5c3e39d1897c5e3878b64d9a2 (patch)
treee194eb07880d3d69b8020e04829f42f5ccec33dc /drivers
parent57784411728ff4d72ae051fdbba1e54fcb1f8d6f (diff)
downloadlinux-0fdad596d46b28d5c3e39d1897c5e3878b64d9a2.tar.bz2
spi: dw: Add DMA support to the DW SPI MMIO driver
Since the common code in the spi-dw-dma.c driver is ready to be used by the MMIO driver and now provides a method to generically (on any DT or ACPI-based platforms) retrieve the Tx/Rx DMA channel handlers, we can use it and a set of the common DW SPI DMA callbacks to enable DMA at least for generic "snps,dw-apb-ssi" and "snps,dwc-ssi-1.01a" devices. Co-developed-by: Georgy Vlasov <Georgy.Vlasov@baikalelectronics.ru> Co-developed-by: Ramil Zaripov <Ramil.Zaripov@baikalelectronics.ru> Signed-off-by: Georgy Vlasov <Georgy.Vlasov@baikalelectronics.ru> Signed-off-by: Ramil Zaripov <Ramil.Zaripov@baikalelectronics.ru> Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: Alexey Malahov <Alexey.Malahov@baikalelectronics.ru> Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Feng Tang <feng.tang@intel.com> Cc: Rob Herring <robh+dt@kernel.org> Cc: linux-mips@vger.kernel.org Cc: devicetree@vger.kernel.org Link: https://lore.kernel.org/r/20200529131205.31838-15-Sergey.Semin@baikalelectronics.ru Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/spi/spi-dw-mmio.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/spi/spi-dw-mmio.c b/drivers/spi/spi-dw-mmio.c
index 0894b4c09496..e23d0c53a664 100644
--- a/drivers/spi/spi-dw-mmio.c
+++ b/drivers/spi/spi-dw-mmio.c
@@ -149,6 +149,8 @@ static int dw_spi_dw_apb_init(struct platform_device *pdev,
/* Register hook to configure CTRLR0 */
dwsmmio->dws.update_cr0 = dw_spi_update_cr0;
+ dw_spi_dma_setup_generic(&dwsmmio->dws);
+
return 0;
}
@@ -158,6 +160,8 @@ static int dw_spi_dwc_ssi_init(struct platform_device *pdev,
/* Register hook to configure CTRLR0 */
dwsmmio->dws.update_cr0 = dw_spi_update_cr0_v1_01a;
+ dw_spi_dma_setup_generic(&dwsmmio->dws);
+
return 0;
}