linux-kernel - [PATCH v2 11/19] spi: dw: Initialize paddr in DW SPI MMIO private data

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Date:   Fri, 15 May 2020 13:47:50 +0300
From:   Serge Semin <Sergey.Semin@...kalelectronics.ru>
To:     Mark Brown <broonie@...nel.org>
CC:     Serge Semin <Sergey.Semin@...kalelectronics.ru>,
        Serge Semin <fancer.lancer@...il.com>,
        Georgy Vlasov <Georgy.Vlasov@...kalelectronics.ru>,
        Ramil Zaripov <Ramil.Zaripov@...kalelectronics.ru>,
        Alexey Malahov <Alexey.Malahov@...kalelectronics.ru>,
        Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        Paul Burton <paulburton@...nel.org>,
        Ralf Baechle <ralf@...ux-mips.org>,
        Arnd Bergmann <arnd@...db.de>,
        Allison Randal <allison@...utok.net>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Gareth Williams <gareth.williams.jx@...esas.com>,
        Rob Herring <robh+dt@...nel.org>, <linux-mips@...r.kernel.org>,
        <devicetree@...r.kernel.org>,
        Wan Ahmad Zainie <wan.ahmad.zainie.wan.mohamad@...el.com>,
        Jarkko Nikula <jarkko.nikula@...ux.intel.com>,
        Jay Fang <f.fangjian@...wei.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        YueHaibing <yuehaibing@...wei.com>,
        Stephen Boyd <swboyd@...omium.org>,
        <linux-spi@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH v2 11/19] spi: dw: Initialize paddr in DW SPI MMIO private data

This field is used only for the DW SPI DMA code initialization, that's
why there were no problems with it being uninitialized in Dw SPI MMIO
driver. Since in a further patch we are going to introduce the DW SPI DMA
support in the MMIO version of the driver, lets set the field with the
physical address of the DW SPI controller registers region.

Co-developed-by: Georgy Vlasov <Georgy.Vlasov@...kalelectronics.ru>
Signed-off-by: Georgy Vlasov <Georgy.Vlasov@...kalelectronics.ru>
Co-developed-by: Ramil Zaripov <Ramil.Zaripov@...kalelectronics.ru>
Signed-off-by: Ramil Zaripov <Ramil.Zaripov@...kalelectronics.ru>
Signed-off-by: Serge Semin <Sergey.Semin@...kalelectronics.ru>
Cc: Alexey Malahov <Alexey.Malahov@...kalelectronics.ru>
Cc: Thomas Bogendoerfer <tsbogend@...ha.franken.de>
Cc: Paul Burton <paulburton@...nel.org>
Cc: Ralf Baechle <ralf@...ux-mips.org>
Cc: Arnd Bergmann <arnd@...db.de>
Cc: Allison Randal <allison@...utok.net>
Cc: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc: Gareth Williams <gareth.williams.jx@...esas.com>
Cc: Rob Herring <robh+dt@...nel.org>
Cc: linux-mips@...r.kernel.org
Cc: devicetree@...r.kernel.org
---
 drivers/spi/spi-dw-mmio.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/spi/spi-dw-mmio.c b/drivers/spi/spi-dw-mmio.c
index 398f7926cf92..0894b4c09496 100644
--- a/drivers/spi/spi-dw-mmio.c
+++ b/drivers/spi/spi-dw-mmio.c
@@ -184,6 +184,7 @@ static int dw_spi_mmio_probe(struct platform_device *pdev)
 	int (*init_func)(struct platform_device *pdev,
 			 struct dw_spi_mmio *dwsmmio);
 	struct dw_spi_mmio *dwsmmio;
+	struct resource *mem;
 	struct dw_spi *dws;
 	int ret;
 	int num_cs;
@@ -196,10 +197,12 @@ static int dw_spi_mmio_probe(struct platform_device *pdev)
 	dws = &dwsmmio->dws;
 
 	/* Get basic io resource and map it */
-	dws->regs = devm_platform_ioremap_resource(pdev, 0);
+	dws->regs = devm_platform_get_and_ioremap_resource(pdev, 0, &mem);
 	if (IS_ERR(dws->regs))
 		return PTR_ERR(dws->regs);
 
+	dws->paddr = mem->start;
+
 	dws->irq = platform_get_irq(pdev, 0);
 	if (dws->irq < 0)
 		return dws->irq; /* -ENXIO */
-- 
2.25.1